Home

Situation-dependent spontaneous mobile information

Contents

1. 93 3 5 Event happens 95 82 Situation dependent spontaneous mobile information service for travelers Table of Figures Figure 24 Start menu 85 Figure 25 Routes Menu Figure 26 Update My Covered Stretch eere Se Figure 27 Create New Covered Route eee eee eee esses enses enses tuse tasse tns ens enses suse sa suse ens ens enses ense sesso OO Figure 28 Help VI OI Figure 29 Load My Profile Page 4 eese esee eere ee esee ee seen etna stats eos toss toss ense ense ease sa sesso socs rossis seen ssens DO Figure 30 Create New Covered Route cereis esee esee eene enses ense ea tone tasse enses enses ense se ssseenssscesseesess Hl Figure 31 Update Covered Route 4 eerie eee esee eese entes enses tuse satu setas ens en sen senses sees een sessensessesseesess H Figure 32 Search Route eee eee esee essen enses ense o tatus ees E Figure 33 My Route EEN Figure 34 Event Hanten AQ 83 Situation dependent spontaneous mobile information service for travelers The Applications Design 1 Welcome Page 3 4 2 DE Trave Plann DoR tart Routes Help Travel Planner Welcome to Tr
2. 13 2 7 Competitive Services 14 2 8 Other Information 14 3 DEVELOPMENT OF TRAVELPLANNER 15 3 1 Services 15 3 1 1 Search Route 15 3 1 2 Cover Route 16 3 1 3 Receive Event When Something Happens Added Value 16 3 2 Target Groups 16 3 2 1 Target Group 17 3 2 2 Target Group 2 17 3 2 3 Target Group 3 17 3 3 Graphical Structure Analyze 18 a amp P T GE an a 2n amp BTH 3 4 Information Sources 19 3 4 1 Traffic Information 19 3 4 2 Public Transport 19 3 4 3 Road Information 19 3 4 4 Streaming Information 19 3 5 Cost in TravelPlanner 20 3 6 Security 20 3 7 Competitive Services 20 3 7 1 trafiken nu Stockholm 21 3 7 2 Eniro 21 3 7 3 Stockholm Transport SL 22 3 7 4 V sttrafik
3. 23 3 7 5 Mobidock 23 3 8 Positioning 24 3 8 1 Automatic Positioning 24 3 8 2 Pushed Positioning 24 3 8 3 No Positioning 25 4 SYSTEM DESIGN 26 4 1 Different Designs 26 4 1 1 Centralized Design 26 4 1 2 Decentralized Design 28 4 1 3 Hybrid Design 30 4 2 System Structure 32 4 3 Use Cases 33 4 3 1 User 33 4 3 2 Content Provider 35 4 3 3 Service Provider 36 4 4 Sequence Diagram 37 4 4 1 Login Procedure 37 4 4 2 Search Procedure 38 4 4 3 Insert Route Procedure 38 4 4 4 Update Route Procedure 39 4 4 5 Delete Route Procedure 39 4 4 6 Event Procedure 40 4 4 7 Logout Procedure 40 4 5 Database Design 41 4 5 1 Database Server Core A 4 5 2 PDA Database 43 4 6 Cl
4. 12 49 55 PARCOS pesos ie te tr i G 7 Information Sources 19 Payment e ara 12 13 Insert E 38 PDA 3 7 16 25 28 43 49 52 l te bint ege eege 31 54 56 69 Introduction 56 PADS ice sand edt a toa 3 7 Ecc 2 Plantin esse 26 29 30 Pocket PC scenic oi Eos 69 J Positioning 24 53 Jernb cker 2 7 56 Powerful eere 16 e 10 L Pretequisites 225 520 10 15 Ee 37 Procedure 12 37 TO SOUL E 40 Profile 16 37 Public Transport 19 M Pushed oc deo red s 24 Measurement 47 E ida RR el tdt 18 Q Microsoft 52 56 69 DEE 36 Mobudock 23 Mobile tiet no 53 56 R Mobile Services 8 Receive Event 16 50 MPS ds e dte tdi dede 33 e e EE 19 Situation dependent spontaneous mobile information service for travelers SS auae S assesses O ES E BTH Oe Technology skill 11 Tall Sa oe Pto sott ta 2 Eegeregie ioca p 8 S ETA DAELY eege 12 e E 31 dba Ri elects PERRA 47 55 Seamless eere eene nnns 7 Traffic Information 19 20 Search 35 38 54 59 trafiken nu 19 20 25 49 55 Search Route 15 35 50 Transportation 34 DE CULL dece educ S 13 20 ke EE 15 19 Sequen
5. e rre rer 35 Figure 11 Use case Service provider er er er 36 Figure 12 Database design Server core database 41 Figure 13 Database design PDA database r rere 43 Figure 14 Class diagram Client re rre rer 44 Figure 15 Class diagram Server re ere ere rre ree rer rer 46 Situation dependent spontaneous mobile information service for travelers 1 Introduction 1 1 Involved Parties This project is a cooperation between Blekinge Institute of Technology BTH supervisor Markus Fiedler master s students Tobias Bertilsson and Marten Persson Saab AB Maria Jernb cker Stockholm Transport SL and Swedish Road Administrations Region Stockholm Vagverket 1 2 Background and Motivation An increasing number of people travel with public transports especially in the large cities Car travelers have to pay considerable fees to drive into the city areas there are too few parking lots and people are getting more involved in taking better care of the environment At the same time people have less time are more stressed and in need of new good technologies They can t afford to be
6. Information System User Database for relevancy Figure 4 Decentralized design Planning In figure 5 it is shown what happens when an event occurs The information system sends out all events that occur to all users 1 The application receives the event and performs a relevancy control against the local database 2 3 If the event doesn t concern the user nothing will happen but if it is relevant for the user the application displays the events creates a new request and sends it to the guiding system 4 The guiding system then sends a new route to the user 5 The application displays the new route information and stores it in the database 6 Guiding System qM Information System Database for relevancy Figure 5 Decentralized design Event Also with this design there will be much data that has to be sent to from the PDA This solution will have even more data traffic than the centralized solution 29 Situation dependent spontaneous mobile information service for travelers because with this solution the traffic information will be broadcasted to all users no matter whether the information is relevant to the users or not This data could be sent using for example DAB Another important issue to consider is the traffic cost Since this is usually paid by the user then it is important to minimize the amount of traffic sent The decentralized solutio
7. In chapter 3 the theories will be applied on the application that is created in this report Its services and existing competitive services etc regarding the application will be described The system structure of the application will be covered in chapter 4 Here different types of system design will be discussed Also database design and sequence diagram will be mentioned and discussed in this chapter In chapter 5 the focus will be on the result describing the system design to be used estimations of data traffic cost etc Chapter 6 denotes some problems that occurred during implementation of the application and discuss possible ways to solve them Chapter 7 contains the discussion In chapter 8 the work is summarized 8 Situation dependent spontaneous mobile information service for travelers In chapter 9 some future work is pointed out such as aspects that may improve the application or things that need to be done to have a scalable application in the future Chapter 10 contains all the references that have been used both literary and digital ones In chapter 11 an index for the report will be found Appendix A presents a short glossary of the report Appendix B explains terms and definitions used in the report In appendix C all the sequence diagrams are placed giving overview of how the application works Appendix D contains the user manual Here will the user learn how to use the application and its se
8. 52 Situation dependent spontaneous mobile information service for travelers Finally a solution to this problem was found It is possible to force the threads to close with the help of a while statement 6 3 Positioning The positioning issue was discovered quite early Either it would cost too much to find a solution or it would result in too much work With the equipment that was available the only method to solve this problem was to use MPS but it was too complex to learn in this thesis work So the solution that was chosen was instead to force the user to input his starting position in the same way as the user does for the arrival station 6 4 Database Connectivity MySQL was chosen as the database in this application But since this was chosen some problems with the connection were discovered No predefined ODBC Open DataBase Connectivity in Visual Studio was found There were some problems to implement a specific ODBC that was made for just MySQL the one that was finally chosen too use was the MySQL ODBC 3 51 driver This problem was not too hard to solve but still it stalled the development a little 6 5 Mobile Database In the planning phase a database was decided to be used on the PDA and not only on the server But after some research on the Internet 15 some information was discovered that there were not many good free solutions available It was decided to use arrays instead of a local database T
9. Disconnect from service This will be the last activity the user does This will close the connection between the client and the server The client sends a specific user identification number to the server 34 Situation dependent spontaneous mobile information service for travelers Search route In the beginning the user has to specify the departing station But in the future the goal is that this will be done automatically with some kind of positioning Then the user has to specify the arrival station if there are any preferred transportation types and if there are any disliked routes So the input could be as follows From Alvsj To Kungstradgarden The next thing that the user has to do is to send away the data to the server 4 3 2 Content Provider Push travelcondition Return route query Content Provider Figure 10 Use case Content provider N The content providers a part of whose is involved in the PIITSA project supply the application with the traffic information This information could be how a user gets from point A to point B information about traffic jams or accidents and information about the road conditions The content providers will stream this information to the system probably in an XML file or RSS stream Therefore it doesn t matter who the content providers are the application should work anyway no matter how many content providers what are used or who they are The content prov
10. 80 Situation dependent spontaneous mobile information service for travelers Appendix D User Manual 81 Situation dependent spontaneous mobile information service for travelers Table of Contents 1 Welcome Page EEN 84 1 1 Main Area arrow 1 84 2 The Menus rer rer er ere ere e ree r eere ere rne rer ere eren re ere ere ener ene 85 2 1 Start Menu arrow 2 85 2 2 Routes Menu arrow 3 86 2 3 Help Menu arrow 4 88 3 The Various Pages re ere rre e rer rer er ere e ree re ere ere rer e Tee 89 3 1 Load My Profile Page 89 3 2 Create New Covered Stretch Page 91 3 3 Update My Covered Stretch 92 3 4 Search Route Page
11. After the change has been done re compile the project by pressing f5 and a new version of the application is generated and stored in the directory ServerCore bin debug 2 1 1 Database connection The configuration of the database connection is made in the file called DBEncapsulation cs At the beginning of the file in the constructor the connection string is located The information in this string is depending on what kind of database is being used The easiest way to get the right information is to visit the database supplier s website or www connectionstrings com 10 providing connection information about the most popular databases 2 1 2 Port numbers Another vital thing that could be configured is the port numbers the server use to listen for connections from the client In the application we use two ports for the communication one for event communication and one for all the other communication These port numbers must be the same on both server side and client side see section 2 2 in this appendix On the server side the port numbers are configured in the file called NSBCore cs They are located on the first two rows in class NSBCore TCPPORT is used for all communication except for event and TCPEVENTPORT is used for all the event communication If the server is running behind a firewall or router the firewall or router also needs to be configured so it allows connections to the specified ports in NSBCore 2 1 3 Add
12. Buus Ajonpbuiobjno Buys uojeusepnjoxe Buijs sngepnpur Buuis ewqnsepnyjour Bugs urea epnpur Buns o uoJeos Bus uio14uo1eos jut PI jui pjjesn pIOA qui pu ur Qui pin ur uojeuiserejeq pioa Bums uoyeusepnyjoxe ui Buys eje qoeds ui Buys peau eum ur Buys Aepyxeew ur Bus uoieuis ui Buys oweu ur Qui pri ur QUI DU ur uojeserepd 1 pioa Bus uojeugepnjoxe ui Buys ejegosds ui Buys j eueiujeuum ur Buys Aepyaem ul Buns uoieuis ui Buys eureu ul QUI p Ul QUI PIN ur uojeiguesu pion qui pm ur Buys eyeps ul Buys peaagu ur Buys Aepm ul Buys es ul Hus zs ul Buus s UI JNDIQIU9AI pioa QUI ppiesn urjuegiue 3 PIOA ui puesn u inoBo1 Bus psomssed ui Buns eureuiesn urn u Bo1 Quone nsdesuaga Bums ynseu aenb Buys bs jui pjjesn puewwogoqpo 19e qo Jepeeij pueuuio23oqpo Welgo pueuiuo2ele ep puewwogoqpo eloo pueuiuoouesut puewwoyoqpo algo pueuiuio9erepdn pueuiui02oqpo 19e qo ueuiuo2ioejes uonoeuuo9oqpo 199 90 uorpeuuoo PIOA Juoeselejeq pioa uojenserepdn pron uojonsuasu Qui pis ui Qui pin U yo ons Buis ojur u uoie as uoieas uoneinsdeou3gg qp Buuis uojensepnjoxe Buys uojensepnyour Buuis eyegouioeds Buns jeaje1ujeuun Bums Aepyoom Buus ed juoneuodsuea Bus 94050 sw Buys 84023uJ0448suJ Buys eu eNo
13. Logout Procedure This will describe the dataflow for the logout procedure The logout process will be done automatically when the user exits the program by choosing Exit program in the menu e The TravelPlanner forwards the logout information containing the specific user identification which was received when logging in to Core This is done by using NSBClient and NSBCore providing the connection e The Core checks in the database to see if the user has the right logout information If the submitted information matches the information in the database the user is set to no longer be active If the information doesn t match the database nothing is changed there e The Core returns a message to TravelPlanner through NSBCore and NSBClient that the logout procedure was successful e The TravelPlanner receives the message and closes the application 40 Situation dependent spontaneous mobile information service for travelers NISK Mut M o 350S CEEDED ssssss esssss eeaeaee REBAR neasea NSO KING M 5 1 o BTH 4 5 Database Design Our application has two databases one centralized placed on the server and one stored locally onto the PDA The later is necessary since there are data and information that need to be stored on the PDA It would be possible to store everything on the server but that would lead to unnecessary amounts of transferred data The whole database is not placed on the PDA fo
14. 3 3 Service Provider Process route query travelcondition This is the server core it provides the service to the users as illustrated in figure 11 This is the centre of the whole application The server core forwards the data from the user and from the content providers The server core is responsible to decide to whom the data is relevant This is one of the most important features without this there would be a lot of unnecessary data what would be transferred between the server and the users With this feature only the users who needs this kind of information gets it This will increase the application s trustworthiness as user profiles and problems are specified by the content providers and correlated with each other AN Service Provider Figure 11 Use case Service provider Process route query This function forwards the route query from the user to the content providers 36 Situation dependent spontaneous mobile information service for travelers Store routes This is the function that stores the user s covered routes into the profile database on the server Display routes This function retrieves the respond from the content providers and forwards it to the specific user which has made a query for a route When the information arrives to the user it is presented on the PDA s display and the user can see the whole route Relevancy control This is a very important function to minimize the a
15. Results In this chapter the results will be presented Some measurements on the data traffic were made Also the cost for the application will be discussed in this chapter Another item regards the information sources Finally the system design and the services of the application are presented 5 1 Measurement of Data Traffic Some rough measurements of the traffic volume from to the PDA were carried out Data transfers are triggered by window shifts There we can compute the amounts of sent and received data before before and after completition of a certain action As the goal is to get some qualitative overview of measurements rather than to get exact quantitative results the measurement was carried out three times per action and the result were averaged The results were then rounded off The reason for that only measuring the data on the PDA is that this amount of data is the most important for the user This is the data that the user currently has to pay for So of course one of the goals was to minimize this amount of data Figures from the Measurement Note that these numbers are of rather qualitative nature Starting the application Data sent 400 Bytes Data received 600 Bytes Most data that are sent here relate to the connection establishment between the PDA and the server core Login procedure Data sent 300 Bytes Data received 650 Bytes When the user clicks on connect to service in the start menu his info
16. See 1 3 in this appendix how to transfer the application to the PDA 2 2 1 Address There is one address that could be re configured It is the address to the server side This parameter ADDRESS is located on one of the first rows in class NSBClient in the file NSBClient cs 2 2 2 Port numbers There are two port numbers that could be configured the port number for all communication to the server except event communication and the number of the port that handles all event communications to the server These parameters PORT for all communications except event and EVENTPORT for event communications are located on one of the first rows in class NSBClient in file NSBClient cs It is important that these port numbers are configured exactly as the port numbers on the server side otherwise there won t be any connection between the client and the server 100 Situation dependent spontaneous mobile information service for travelers
17. Vodafone Live subscription 3 7 3 Stockholm Transport SL http wwvw sl se This service provides good information about public transport It s from here that trafiken nu gets its information about public transport in the Stockholm area This service is one of the few that includes traffic information when they calculate the routes Here it is possible to browse through traffic deviations that occurred earlier but still are valid But also here it isn t possible to include traveling with a car in the route Pros e The user can get information about traffic deviations busses and commuter train e Provides information about time stations etc e It s easy to find information about a certain station even if the user doesn t know the exact name of the station Cons e The user can only do a search between two stations If the user specifies an address that isn t a station the service guess that the user meant the station whose name is most like the specified address e Provides only information about public transport e Real time information is only delivered upon request 22 Situation dependent spontaneous mobile information service for travelers 3 7 4 Vasttrafik http www vasttrafik se Provides services like road deviations and next journey from a specific station Pros 3 7 5 It s easy to use if the user only wants to get information when public transport is departing from a specific
18. active covered route in its profile 3 2 Target Groups The great target group for the TravelPlanner application is the same who also are the target for mobile services on PDA They are men and women mostly in the age between 18 and 40 probably quite successful in their life they want to be up to date regarding modern technology and related services To make it easier to understand that group it is divided into three subgroups 16 Situation dependent spontaneous mobile information service for travelers 3 2 1 Target Group 1 The first group are the typically city travelers The members in this group spend most of their time in the city They use public transportation several times per day They use all kinds of traveling not only bus or subway Demand Collect as many different types of transport as possible in the application 3 2 2 Target Group 2 The second group is the regular users for this kind of new technologies They are well updated and try every new technology that is available They don t hesitate to pay for the services that they are using Demand Have something new and unique that is really powerful to make this group start using the application 3 2 3 Target Group 3 The last group contains the beginners This group is almost afraid of new technologies If the technology is too complex they will never use it because they think that something will get broken But in the same time the
19. clicks on either of these buttons In this way no events will be lost 95 Situation dependent spontaneous mobile information service for travelers Appendix E Configuration Manual 96 Situation dependent spontaneous mobile information service for travelers Table of Contents 1 INSTALLATION INSTRUCTIONS een 98 1 1 Database Installatton En 98 1 2 Server installation EEN 98 1 3 Client installation EE 98 2 APPLICATION CONFIGURATION een 99 2 1 Server Ride en 99 2 1 1 Database connection 99 2 1 2 Port numbers 99 2 1 3 Addresses 99 2 2 Client side neen 100 KREE 100 2 2 2 Port numbers 100 97 Situation dependent spontaneous mobile information service for travelers 1 Installation instructions To be able to install the software some prerequisites things need to be done These prerequisites and how to get the application running are specified below 1 1 Database installation The application is using the MySQL database This means that the MySQL Server must be installed on the computer that should
20. hired from a third party These costs should be defined as good as possible Who is providing the services and approximately how much will it cost to use them These factors are relevant for the end users too since it will play a major role in how much they have to pay for using the service There are three different types of payment that the creator of an application could choose between Either will the user pay when the user uses the application or pay a one time fee when buying the application The third solution is a combination between the other two choices 12 Situation dependent spontaneous mobile information service for travelers 2 5 1 Pay When Used The user will be charged a small fee when the user uses a service This fee will be based on which service the user uses how long the user will use it how many services are offered and how much information that will be sent over the network This type of payment for services is quite typical today 2 5 2 Purchase Application The other solution is that the fees are included into the price that the user will pay for the application if it should cost anything Then the user won t be charged when using the services This is the easiest way for the developer as the developer doesn t have to create a billing service The developer knows that he will get paid for his product as soon as the users buy the application 2 5 3 The Combination This technique is probably
21. most important element is the menus They create a structure over the application with the help of the menus the user will be able to click his way through the application The structure is heavily dependent on how well the menus are working Shouldn t the menus work in the way the users expect them to will this give the users the negative impression of that the application is confusing It is through the structure that the user gets a mental overlook how things are connected of the application design and if this isn t positive then the user won t continue to use the application The application should look as follows cf figure 1 It has a menu field arrow 2 3 and 4 in the picture below which will always be available Then it has a main area arrow 1 in which all information will be displayed This area is dynamic and will change depending on what the users are doing in the application This makes it easy to get an overview of the application 3 4 2 EB Trave Plann EI tart Routes Help Travel Planner Welcome to Travel Planner Hopefully this program will help you to get where you need to go Figure 1 The application 18 Situation dependent spontaneous mobile information service for travelers When developing a graphical application it is important to use colors with high contrast The application should contain three colors white black and grey This will make the text easier to read 3 4 Informat
22. send the position In this thesis work has three different methods regarding positioning has been investigated namely automatic positioning pushed positioning and no positioning 3 8 1 Automatic Positioning In this scenario the user doesn t have to do anything The information about his position is gathered automatically Everything is happening in the background The user only types in his destination and sends his query to the system Then the application will automatically gather the information about the user s position Then the travel plan is calculated and sent to the users PDA where it is stored Pros e Theeasiest way for the user e The information about his position is always up to date e Might cost some money to get the position e Take longer time since everything is done after that the user has typed send request e This is probably the hardest scenario to implement 3 8 2 Pushed Positioning This is happening either when the user is starting his application or when making a choice in the application that sends out a signal telling the system that the user wants to be positioned The information of where the user is at the moment is sent to the PDA where it is stored When doing a query about the travel plan the user is only telling the application the travel goal since the departure position is gathered from the information that was previously queried After this information has been sent away the travel pl
23. station Provides information about traffic messages road conditions and road works Is only available for public transport Doesn t offer any automatic update to get new traffic information Only in Gothenburg Skara Fyrbodal and Sjuh rad area Mobidock http www mobidock com Mobidock is a service that works both on a PC and on a mobile unit It s like a portal which the user must register to get access to In this portal are numerous services available one of them is a traffic information service Pros The service is very detailed e g provides several roadmaps Provides very many different services not only in traffic information area The user has to create a profile to use the service The portal has a lot services that isn t necessary in the traffic information area e g blogging and community It could be complicated to use the portal as it does not provide a user friendly structure The traffic part is only working for three cities Stockholm Gothenburg and Malm The portal provides different services for different cities 23 Situation dependent spontaneous mobile information service for travelers 3 8 Positioning To be able to use positioning there are two types of positioning to focus on They are network based positioning and GPS based positioning In network based the application finds the location by calling a service and in GPS based uses the application the GPS hardware to
24. the same task as NSBClient has on the client side it handles connections between the client and the server The main difference between the two 1s that NSBCore listens for connections while NSBClient take the initiative to connect Class DBEncapsulation handles all information regarding the database It handles connections to queries to and results from the database The Core class is the main class on the server side It processes the incoming data so that it is sent to the right place It also contains a timer so that some task could be scheduled to be executed at a certain time The Event class is called at a certain time from the Core class In the Event class everything about events or travel conditions is handled It checks for new information regarding events and travel conditions processes the data and makes it readable for the client It also checks which user the event concerns Class Search handles the search regarding how to get from point A to point B It processes the incoming information received from the client builds a query and sends it to one of the content providers The received result from the content provider is processed to be readable for the client The Stretch class handles information about the covered routes 45 Situation dependent spontaneous mobile information service for travelers Buns Aanb ur uojees uoneinsdeou3gg qp Buns eue euun Buys eui JUNI Buis eyeqiueuno Buus ynseu aenb
25. ATION OF TERMS execs tenia saca rose ae crie 67 APPENDIX C SEQUENCE DIAGRAMS quniiceno 72 APPENDIX D USER MANUAL 81 APPENDIX E CONFIGURATION MANUAL celer 96 Situation dependent spontaneous mobile information service for travelers List of Figures Figure 1 The application EE 18 Figure 2 Centralized design Planning rr 26 Figure 3 Centralized design Event ncn rere ere Le rer 27 Figure 4 Decentralized design Planning rr rere 29 Figure 5 Decentralized design Event ere rer Lr er eo 29 Figure 6 Hybrid design Planning ere rer er ere ee ere 30 Figure 7 Hybrid design Event re rer e ree ree rer ree rer eL LT 31 Figure 8 System structure rer rer ere erre ree ree rere ere ere e neu eT eL 32 Figure 9 Use case User rer rer rer ere e ree ree ree rennen e ener ner e Te 33 Figure 10 Use case Content provider
26. CR Travel Planner DEOR Start Routes Help Update Covered Stretch Name on my covered stretch test Bus Road Line Separate with comma 128 23 Days lv Monday Friday Iw Tuesday E Soa Wednesday Sunday Thursday Date yyyy mm dd p oo Time iw 06 07 10 11 iw 07 08 11 12 iw 0809 1213 iw 0910 13 14 Dther Time Hours only Delete Next Stretch Update Figure 31 Update Covered Route If the user chooses to update his covered route he or she gets what is shown in figure 32 If it is a bus stretch that he wants to update then he clicks on Bus in the menu Then all bus stretches will be readily available so that he can step through them one in a time This is possible thanks to the Next Stretch button 92 Situation dependent spontaneous mobile information service for travelers When a route is loaded into the page all of the information that belongs to that route is displayed The user can see which line it addresses and which days and time the route covers If the user has stepped through all of his covered routes then it will say No more result for this type in the Line textbox on the top of the page In this case the Delete button won t be visible 3 4 Search Route Page C Travel Planner aia Start Routes Help Search Route From Ee A l To E I Can Travel With Train Subway 3 Bus Excluded Stretches Search Route 5 6
27. Examensarbete MEE06 10 Situation dependent spontaneous mobile information service for travelers Tobias Bertilsson Marten Persson This thesis is presented as part of the Degree of Master of Science in Electrical Engineering with emphasis on Internet Systems Blekinge Institute of Technology 2005 2006 Master of Science in Electrical Engineering with emphasis on Internet Systems Blekinge Institute of Technology School of Engineering Department of Telecommunication Systems Supervisor and Examiner Markus Fiedler Blekinge Institute of Technology Supervisor Maria Jernb cker Saab AB Special Thanks First of all we would like to thank Maria Jernb cker at Saab AB for the opportunity to do this thesis work and for the help with the insight to make the application more user friendly Then we would like to thank Markus Fiedler our supervisor at BTH Thank you for the opportunity to present our ideas on the national ITS conference in Stockholm autumn 2005 Thank you for the discussions when we got stuck there your endless knowledge has helped us a lot We also want to thank Annelie Walter Jonas Andersson and Fredrik Erlandsson who has taken their time to review our report and testing the application You have also given us a lot of mental support Ulf Andersson has also helped us he provided some space on his server so that we could test the application outside its normal environment Thank you all without
28. Figure 32 Search Route On the search route page as shown in figure 33 the user will make his searches for new routes The user inputs the name of the departure name arrow 1 and the name of the arrival arrow 2 Then the user specifies which kind of transportation types he can travel with arrow 3 and which routes he wants to exclude arrow 4 If he wants to reset all the information he clicks on the clear button arrow 5 But if he thinks that the information is correct then he clicks on the Search Route button arrow 6 When the user clicks on the Search Route button then the information will be forwarded to another page that will be brought to the front This page is called My Route 93 Situation dependent spontaneous mobile information service for travelers Travel Planner ama Start Routes Help My Route Fr n Slussen onsdag 4 januari kl 15 33 till Globen kl 15 40 Ta tunnelbanans gr na linje fr n Slussen mot Hags tra Den g r fr n Slussen 15 33 Du r framme vid Globen 15 40 Restid 7 minuter Trevlig resa Add to my profile New Search Figure 33 My Route Here the user can either make a new search or add the route to his profile as shown in figure 34 If the route is added to the profile then the user will receive messages about events that concern the route 94 Situation dependent spontaneous mobile information service for travelers 3 5 Event happens CR Travel Planner Sta
29. Jernb cker at Saab AB viewing the application to get some response from a non technical person but with considerable experience with this kind of applications This resulted in some smaller changes in the structure of the menus and renaming some options When all these tests were made we had received some responses being the background for this discussion Most of the response was positive but we have found some areas that could be improved if the application would be commercialized 56 Situation dependent spontaneous mobile information service for travelers Some of the future works that can be done are Develop a better search function that isn t depending on SL s database Even if this isn t fixed the application will work This future work will relieve the users from typing the exact name of the stations Make the application more suitable for multiple simultaneous users This is the most important problem to fix if the application should become commercial Currently only one user can use the application at the same time But since it is only a demonstrator this isn t vital for the application to work Include more traffic information like parking lots flight and train traffic and make the application cover whole Sweden This can be done to get a larger target group for the application If this information will be included then more users are likely to explore this application and its services 57 Situation d
30. The application should be created by Tobias Bertilsson and M rten Persson at BTH and should be able to be installed on the users PDA s The theoretical part 7 Situation dependent spontaneous mobile information service for travelers of the creation of the application was made in the course Mobile Services ETD013 at BTH The result of this study was then refined and implemented this part of the project is their master s thesis The application should gather information about the travel route that the user wants to travel and present it for the user The application doesn t depend on the network it should just receive the information that would be streamed out from the system and do necessary operations with the information 1 3 Goal of the Thesis Work The goal of this thesis work was to create an application for mobile units especially PDAs so that the users should be able to search for routes from point A to point B They should also be able to cover a certain route for example subway line red But the most interesting feature is that they will receive a message when something happens either on the route that they have searched for or on any of their covered routes Here lies the very challenge in the thesis work 1 4 Structure of the Report Chapter 2 will describe the theoretical background that is needed for creating an application It will include the most vital things such as finding the services target groups etc
31. a third party is involved SL s service can t be changed nor can SL be asked to change it For example if the user wants to travel from Kungstr dg rden to lvsj the user had to type in Kungstr dg rden Hamngatan and Alvsj Station If the user doesn t do this then the user won t get any hits from SL s homepage If there were enough time then this would have been fixed so that it would be better It is possible to use the result and send a new query to SL based on the first result The way the application makes its search query for a route forced us to learn how to strip an html site Since the search query is forwarded to SL s homepage there was not any way to directly use that information Something has to be done with the information so that it is possible to use it in the application The solution looks like this When the user makes the search a C class called Webclient starts to collect the data from SL s homepage The relevant text was extracted from the HTML page 54 Situation dependent spontaneous mobile information service for travelers based on its tags An HTML site contains even more information that is unnecessary for the application than an XML site does 6 8 Problem with the Event Reception This problem appeared sometimes while testing the application It didn t happen every time or only on one machine so any reason of this problem wasn t found When the application was running and the u
32. act as the server in the application Download MySQL Server 5 0 from www mysgl com and follow the installation instructions provided by MySQL When MySQL Server is up and running create a new user account with username piitsa and password piitsa After that create a new database called piitsaDB Set the user rights for the database so that the user can access the database These actions can be performed in the MySQL Command Line Client which is included in the MySQL server package or by using MySQL Administrator To get the tables into the database import the piitsa sql file This could be done by either using the MySQL Command Line Client or by using MySQL Query Browser Both the administrator tool and the query browser are available for download at www mysql com 1 2 Server installation To be able to run the application on the server side the database must be working see above To get the application working with the privious installed database the address to the database must be configured see section 2 1 1 in this appendix on how to configure the database connection The application is an executable file with the file extension exe The file ServerCore exe is located in the directory ServerCore bin debug If a firewall is used make sure that it allows connections to the program Another important thing for the server side is that the RSS file RSS xml is located in the same direc
33. ad will be stored This information will be used for a first filtering to see which user the information concerns By just storing this minimal information about the user and its routes the privacy will be kept high On the PDA all user relevant information will be stored 1 e particular route information 4 2 System Structure PDA GUL H hi WM PDA Core NSB l NSB r Server Core d D Content Provider DB Encapsulation H Profile db Figure 8 System structure In figure 8 the system design is presented There is a graphical interface PDA which connects to the PDA Core through a GUI The PDA core uses the NSB to connect to the server though the net The Server core is connected to the database through a DB Encapsulation but also has the options to connect to content 32 Situation dependent spontaneous mobile information service for travelers providers The design that was chosen for this project is a hybrid There is intelligence both at the server and on the PDA With the PDA the users will be able to get automatically generated information about problems with their routes They will also be able to get new routes when their old ones would not be correct any more which could happen for a number of reasons accidents delays and strikes A future goal is that when users perform searches for routes they don t have to type in infor
34. an is calculated and sent to the PDA which will store it and present the information 24 Situation dependent spontaneous mobile information service for travelers e Should not be that hard to implement if the positioning works as supposed e The user doesn t need to know the name of the nearest departure station e Rather easy for the user e Fast when the query is send because the information was gathered earlier e The user needs to do two things querying for the position and create a search route query e The position that is stored might not be his or hers current position this is the major con for this method 3 8 3 No Positioning The user tells the application where the departure station is and then tells the application where the arrival station is With this method no positioning is needed All the needed information is typed in on the PDA s screen by the user After this the information is sent to the server which forwards the question to the information system SL VV and trafiken nu Then his travel plan is calculated and sent to his PDA and stored this is if a client based system should be used Pros e Easy to implement e Cheap no need to pay any possible charges for the positioning e Fast no positioning is needed e The user needs to type in more information e The user needs to know where his current position is In this thesis work the no positioning method was used The reason for th
35. and only one post in the TransportationType table routeld is the primary key in this table The fields routeName specificDate and excludeStretch are not mandatory These fields can be used when the user wants to set a name on the route e g home or wants information about a route just on a specific date or to specify if a route should be excluded TransportationType table This table contain information about the different transportation types i e subway train bus car etc It has one relation it s to Route table The relation is one to many 1 This means that one transportation type e g subway can belong to many routes but however one route can only have one transportation type The primary key is transportationTypeld RouteUser table This table is only a help table between the Route and the UserInformation tables It contains two fields with foreign keys to these tables FK1 routeld is the foreign key to Route table and FK2 userId is the foreign key to User table This table has relations to two tables it has a one to one 1 1 relation to Route and a one to one 1 1 relation to UserInformation table routeUserld is the primary key The reason that there is a need for this table is that a user can cover many different types of routes 1 e Subway could be covered on Mondays and a specific bus line could be covered Wednesdays and Thursdays in the morning and evenings UserInformation table This table has the information abo
36. and presents the new route to the user 13 14 The hybrid solution is the most intelligent solution of them all With this solution all parts of the system won t be loaded that hard with work The PDA does its thing and doesn t care about what the server does The server s only concern is to receive information and check in its database to see where to send it If the system grows scalability is an issue since there will be much traffic from the server But if some kind of broadcasting is used e g DAB instead of selective streaming then our system will be more secure for the future and doesn t have the same scalability problems as the variant described before 3l Situation dependent spontaneous mobile information service for travelers The data load will be much easier with this solution compared to the previously discussed solutions Between PDA and server only information that concerns the user will be sent The traffic information torrent will be much smaller too since there only has to be an exchange of information between the server and the content providers The main advantage with this solution is that it is relatively upgrade secure for the future This solution is created so that it will be easy to put the intelligence anywhere This solution will be designed so that some information is stored on the server and some on the PDA On the server side information such as preferred bus line subway line or specific ro
37. application is now finished at least enough for a demonstration But there is more work that could be done It could be to come up with more services for example let the user find available parking lots It could also be making national covering of the services enable positioning etc Search Function This is one thing that has to be rebuilt As it is now the user has to type in the exact name on the station If the user doesn t then the application won t find any station in the SL s database Another way is to use another database Multiple simultaneous users This is a major problem to fix if the application should be published As it is now the server can t handle more than one user at the time This is of course not feasible if this application should be sold to people Available parking lots This service could be built into the application Then the user would see if there is any meaning for him to take the car to city This service will especially be appreciated by the multimodal travelers who use several types of transportation to go from point A to point B With this service they could take the car to the city border to empty parking lots and continue the travel with the subway or something else National coverage The application could be expanded so that it would cover most of the country or even go international Flight Flight could also be included in this application This could make the travelers even more mult
38. ass diagram 44 4 6 1 Client 44 Situation dependent spontaneous mobile information service for travelers 4 6 2 Server 45 5 RESUL E 47 5 1 Measurement of Data Traffic 47 5 2 The Cost of the Service 48 5 3 The Information Sources 49 5 4 Chosen System Design 49 5 5 Services of the Application 50 6 Problems 52 6 1 Compact Framework 52 6 2 Exiting the Application 52 6 3 Positioning 53 6 4 Database Connectivity 53 6 5 Mobile Database 53 6 6 PDA Problem 54 6 7 Search Query to Stockholm Transport 54 6 8 Problem with the Event Reception 55 6 9 Collecting Traffic Events 55 7 DISCUSSION 56 8 CONCLUSION 58 9 FUTURE WORK 59 10 REFERENCES 61 10 1 Paper References 61 10 2 Digital References 61 Ti INDEX eee 63 APPENDIX A GLOSSARY 66 APPENDIX B EXPLAN
39. ation to Core This is done using NSBClient and NSBCore to get a connection e The Core forwards the information to Stretch Stretch processes the information and calls the correct method 1 e InsertStretch The method sends correct information to DBEncapsulation e The DBEncapsulation builds the query string and sends it to the database e The covered route will be inserted in the database Core returns a message to TravelPlanner saying that it succeeds e TravelPlanner forwards the information to SortedLoginString The information is the same that was forwarded to Core earlier SortedLoginString process the information and adds it to the local profile 38 Situation dependent spontaneous mobile information service for travelers 4 4 4 Update Route Procedure This will describe the dataflow for the update route procedure To start the dataflow the user must update information in the text fields name of the route line date and time presented when choosing Update covered route from the menu After the user has selected to update a covered route from the menu TravelPlanner sends the local profile to MergeTypeString MergeTypeString groups the profile into transportation types and returns the result to TravelPlanner TravelPlanner presents the update field containing the information about the covered route that was selected TravelPlanner sends the information that should be updated to UpdateString UpdateString build
40. avel Planner Hopefully this program will help you to get where you need to gol Figure 23 Welcome Screen 1 1 Main Area arrow 1 This is the welcome screen that the user will see when starting the application It is not perfectly correct since the only way to create a screenshot was to run the application on a PC instead on the PDA which it is created for The menu arrows 2 3 4 is placed on the bottom of the screen when the application is run on a PDA Figure 24 shows the most important parts of the application The most important of them all is the area which has an arrow with the number 1 attached to it This area is the main area in which all information will be shown Also here all the options and possibilities for the user to maintain his application will be displayed Things that could be presented in this area are text textboxes checkboxes buttons and scrollbars Almost all these things are changeable by the user 84 Situation dependent spontaneous mobile information service for travelers 2 The Menus There are three main menus in our application These are Start Routes Help All of these main menus contain some sub choices and or sub menus The description of them is seen below 2 1 Start Menu arrow 2 EE Travel Planner Routes Help Exit Program Connect To Service Start Page Check Latest Received Event View My Covered Stretches Figure 24 Start
41. cations and Autonomous decisions Person Uppgifts Lagen Rich Site Summary Stockholm Transport Swedish Meteorological and Hydrological Institute Short Message Service Visual Basic Swedish Road Administration Wireless Area Protocol World Wide Web eXtensible Markup Language 66 Situation dependent spontaneous mobile information service for travelers Appendix B Explanation of Terms 67 Situation dependent spontaneous mobile information service for travelers Application The program that will be run on the PDA C C is a part of the concept Microsoft Net C is a programming language that has many similarities with other languages like Visual Basic C C and Java 4 The reason that Cf was chosen for development of the application was that it is fairly easy to create graphical interfaces and the PDA that was used in the project supports applications programmed in C Class Diagram In a class diagram the developer can sketch the program before starting to create it A class is a part of the program that is used in object oriented programming A class diagram helps the programmer keep control of the data structures and methods In a class diagram are all classes drawn and the relationship between them is shown Content Provider Are those providing the content that we are using With content we mean the information about traffic and the information of how to get from point A to point B DAB Di
42. ce Diagram 37 TravelPlanner 15 20 50 EE 45 Server Core 41 U Service 10 13 15 16 48 50 UM KEE 7 21 Service Provider 36 Re 10 Simultaneous users 59 be ended dts 39 sd PONI RN URS 7 19 22 25 Use DA OS RTT 33 e o NR otn Mules aes 12 eet ees 10 leede 7 SOLUIT OD este Pom qa 17 V Stockholm Transport 54 KE E 7 Kit DEE 19 E RI 23 Structure uoces 10 11 17 32 VINNOVA eoe aora doe pates tiens 3 SUDSTOUDpS cicer otia thee 16 Visual Studio Net 56 69 DUDWOVS E 19 Ph gud ES 19 25 HEET 26 49 W T WAP sro do eba AA dp 7 KEE 16 WEAN RR setae E cena dase I Target group ME 11 dp Xm 71 X Technical eisean 56 UNITE EE 55 Technology 17 Situation dependent spontaneous mobile information service for travelers Appendix A Glossary DAB DB GPRS GPS GUI HTML KBPS MMS MPS NSB ODBC OEM OS PC PDA PIITSA PUL RSS SL SMHI SMS VB VN WAP XML Digital Audio Broadcast Database General Packet Radio Standard Guided Position System Graphical User Interface Hyper Text Markup Language Kilobit Per Second Multimedia Message Service Mobile Position System Network Selection Box Open DataBase Connectivity Original Equipment Manufacturers Operative System Personal Computer Personal Digital Assistant Personal Information Intelligent Transport systems through Seamless communi
43. e Services at Blekinge Institute of Technology in spring 2005 The resulting service design was then refined and developed further so that it could be applied in this thesis work The reason for doing this was that new and better solutions were discovered which we preferred to use instead of the old solutions 3 1 Services Three major services can be defined in the application They are Search Route Cover Route and Receive Event The first two can be performed by the user anytime as long as the user is connected to the service The last one occurs when the user has either made a search for a route between point A and point B or if the user has at least one covered route in the database If something happens on either a covered route or on a searched route then the user will receive an event 3 1 1 Search Route The search route service is quite easy to understand The user wants to travel from one place to another inputs the name of the departure station and then the name of the arrival station Then the user has to decide which type of transportation to use train subway and or bus If there are any roads routes that the user doesn t want to travel on then their name should be typed in here and they will be excluded in the search This service is provided by a third party When the user clicks on the search button the search result is displayed on the PDA Now can the user decide to accept the search result or ask for a n
44. earch for a new route just bring the application to the front 49 Situation dependent spontaneous mobile information service for travelers When the implementation of the application started the design of the database had to be redesigned Currently no database was needed on the PDA but there might be one needed in the future 5 5 Services of the Application The application resulted in three major services These are cover route search route and receive event The most powerful service of these is the receive event with up to date traffic information Cover Route This will probably be the service that is mostly used Here the users can specify which part of a route they want to cover i e receive traffic information about They just have to input some data about the route These data are a name for the route which type of transportation which line which day date and which time the cover are for There is one other way that a route can be inserted here It is when the user searches for a route from point A to point B Then will the different part of this route be included here If the route has more than one part for example 1f the route includes both a bus ride and traveling with the subway then these two parts will be saved separately This is done to protect the user s integrity now only the user will know his whole route Search Route This is an important service that TravelPlanner provides But it isn t a u
45. einoij jui pjadA juoneuodsue Jul plyoyeuys jut pasn ou eyeq eloo p ul jusag jusag uopensdeougga qp J pe yx jux algo y2 y491 pL 1 J pe yx jux fq0 Jopeo eui ejeq pelgo eunp IBuuis duet Guias jue 3peoj Buns 94090 6sw Buys ou JUUNI Buijs ajequeuno Buis Aequueuno Bus BuuisBuroDino Buys BuusBuruuoour uonejnsdeouqaa PIOA Jasojo pioa Bus s uiau Muong PIOA 0 Jeuejsr1do eloo jueA3dor Jeueijsrido eloo 1eueijsr1doj Jeu wurees JO9 go 1e1 Mindino J pe y weas joelgo jepeeyindur JOWMWEANS eloo jeyiMandur WEAISYOMN 12e qo weas ndyno LBSNSYIOMI9N 199 70 ureeusindur 194005 19e qo JusAguojdeuuoo jexoos eloo uonoeuuoo Bus 91090 sw jul uonounj Buns 1uejoo psw Bus jus Quo J86su WU LHOdINIAIdOL Jul LHOddOL pioa Buuis sbre ul ureyy ploa algo s ui pouie aw PIOA JaW e1eoJo pioa 40198 eSuonounj Buys uorjeuuojur ur QUI UONOUNY UI 9109 91059 Jeu 1oe go jegjeun eui Leeq P lqo euinp 91008SN asu uoneinsdeou3gg qp eyo 10je1edos Bus Jesno Bsu Buys uoneuuojJur 1 plyoyeuys jui pjjesn jui uonounj U MOJ3HOLN3AG Jut MOIHOLNIAILSHIA Server iagram Class di Figure 15 46 dependent spontaneous mobile informat ice for travelers 1On service 1on Situat 5
46. ependent spontaneous mobile information service for travelers 8 Conclusion In this thesis work an application for mobile units i e PDAs was created The application is a part of the VINNOV A sponsored project PIITSA The application should be used in a demonstration purpose where the functionality of the network selection box should be shown To create the application several steps in the development process have to be done from pre study to implementation and testing The application is a smart travel planner It should be able to give answers on How I get from point A to point B in the best way but it should also be able to serve its users with information about disturbances in the traffic i e on roads public transport etc that concerns their routes After the pre study was made a system design was developed Also the different kind of services and integration against different content providers was done in the implementation phase The finished application has three main services 1 search route from point A to point B when traveling with public transport 2 profile handling so the user can choose what routes they want to cover and 3 receive information about if something happens on a particular route This means that the system will notify the concerned users about traffic conditions and delays etc 58 Situation dependent spontaneous mobile information service for travelers 9 Future Work The
47. ere displayed on the PDA then the page would only be as long as the scrollbar to the right This is what the user faces when creating a new covered route in this case a bus stretch Arrow 8 point to the textbox where the name of the specific route should be input for example Work Arrow 1 points on the textbox where the user will input the bus lines to be covered For example for bus line 4 and bus line 9 he will input 4 9 Arrow 2 points to the checkboxes where the user will chose which days he wants to get information about If the user wants to get information about a specific date then he will input this date in the textbox that arrow 3 is pointing to Arrow 4 points to the time checkboxes here the user can decide which time he wants to get information about The textboxes that arrow 5 is pointing at will contain information if the user wants to cover a route and doesn t think that any of the checkboxes fits his or her needs for example 19 20 Then he could use these textboxes to type in the interval Only 9 Situation dependent spontaneous mobile information service for travelers whole hours are allowed here If the user wants to reset the values he has then he could click in the Clear button that arrow 6 is pointing to When the user is finished with specifying the information about the route then he clicks on the save button arrow 7 and the information will be stored into the database 3 3 Update My Covered Stretch
48. erver needs to be encrypted Storing data on one central unit also increases the vulnerability regarding attacks and system failures so that the whole information might disappear Depending on what type of application is chosen for the user side the amount of data could be reduced For example if an application written just for this type of presentation is used then there is no need to send a whole website 4 1 2 Decentralized Design With this design all intelligence is placed on the PDA which runs the application that does all the work The server doesn t exist at all The PDA has its own database there it stores the information about the routes and the incoming traffic information With this design the PDA is in direct contact with the content providers There is no server that works like a gateway between the users and content providers If the content providers send out traffic information it will go directly to all the users Then they will examine the information to see if it concerns them In figure 4 below the dataflow can be seen The user sends a route request to the guiding system 1 The guiding system processes the request and sends it back to the user 2 The application presents the answer of the request and stores it locally for future use 3 such as relevancy check when an event occurs 28 Situation dependent spontaneous mobile information service for travelers A Guiding System
49. euuoju sjepdry L4 VM Ki sales Duueappdn ssejo WOJ Doug SEM Pey BunguiBo7peuos sse 0 uomeuuojur eu spues aeuue Jj9 eJ sepr3 unses umay uogeuuojur pues uon sado Bums d Buuigeiepdr wouy panos ynsey pues unses umey I d Jaye vos uojeuuojur puss inse pawos uma aloud Dame pues xm ES m9 Ea ES ES Sequence Diagram Delete Route D H Figure 20 78 Situation dependent spontaneous mobile information service for travelers sasn uunjay Juang pues uoneuuoju asn ejepdr ojur asn ajepdry Ayanb gp sseoo0Jd JL lt JU ARUNOS 2 Aas qunog M ES Ed lenau aul ua E je juana M u JO YPJ 8109 SSEIO JUBA Mau LUMA JUBAB MAU JO pe ue juasaJd pue eut eum ueN e 1e uana MOU 10 Det JjeuuejdjaAeJ sse Sequence Diagram Event Arrived D H Figure 21 79 Situation dependent spontaneous mobile information service for travelers gP eod Jesn ayepdy 4 Pasoj 39 Wat v Od au ui wesosd ayy 1nseJ umay insa me ynses umay Joen jnoBo uoineunojuuesn j98x3 uoneuuojul jnoBo puas I I I I I WORBUWOJU jno60 puas I I uoneuuojujno amp o pueg EH TONE ASdESTIAO EH JUSHSASN JAVLJALI Sequence Diagram Logout D H Figure 22
50. ew search If the user decides to accept the result then the route is inserted into the user profile Prerequisites The user has to know the exact names on the stations 15 Situation dependent spontaneous mobile information service for travelers 3 1 2 Cover Route This is a powerful service that the application offers Here the user can create covered routes that will be inserted into his profile in the database The user can name the covered routes decide which type of transportation bus train subway or roads which weekdays or a specific date and which time that the application should receive information about these covered routes Prerequisites The user needs to know the name of the route that he wants to get information about 3 1 3 Receive Event When Something Happens Added Value This is the most important service that the application provides It is this service that will make the users willing to use the application If something happens on the searched route or on a covered route then the user will automatically receive a message that explains what just has happened on the route Now the user can search for a new route just by clicking the alternate route button This will send a new query to Stockholm Transport 13 that will create a new route around the problem This new route will be presented for the user and can be stored into the user s profile Prerequisites The user has to have at least one
51. eyboard for input This means that they also incorporated handwriting recognition features 6 This is the client in the system enabling the user to use the service The program should work with any kind of PDA that has Pocket PC as its operating system as long as it could connect to the Internet in some way Pocket PC Pocket PC is software for PDA s Pocket PC has both OS and application components bundled specifically for PDA s These include a set of system components from the Windows CE OS and application components Windows CE is a set of components that an OS developer uses to build a proprietary OS OEM s who purchase Windows CE use Platform Builder an 69 Situation dependent spontaneous mobile information service for travelers integrated development environment to assemble and compile an OS image The image includes Windows CE and custom components and custom device drivers The OS image is then programmed into the read only memory of a microprocessor chipset Windows CE is not restricted to Pocket PC devices It is appropriate for cash registers cellular telephones medical instruments and any other appliance that requires a small embedded OS The Pocket PC OS is a custom version of Windows CE developed by Microsoft It contains APIs and applications that are not included in Windows CE 3 0 itself Likewise Windows CE contains components that are not included in the Pocket PC OS 7 Public Transport P
52. gital Audio Broadcasting also known as digital radio Database A database is used to store data in an organized way so that all data are easy to retrieve and use update There are many different kinds of databases available today The one that we are using in this thesis is called MySQL Event With event we mean the information we get from trafiken nu when something happens in one of the transportation systems It is this information that is forwarded to the concerned users This creates the most powerful service that the application provides Feasibility Study Feasibility study is a study that is made before the creation of the program It is made to make it easier for the creator when starting to build the program In this pre study things like background existing services and demands and so on are looked more closely into 68 Situation dependent spontaneous mobile information service for travelers GPRS GPRS stands for General Packet Radio Service and is a non voice service that allows information to be sent and received across a mobile telephone network The theoretical speed of GPRS is 171 2 kbps using all eight timeslots at the same time 2 but the reality is quite far from this The reason for using this technology was mainly that the PDA has a jacket with GPRS and GSM available on it and the fact that the Network Selection Box wasn t developed But also the cost and speed was important It would cost too much t
53. h Route D H F H 17 75 Situation dependent spontaneous mobile information service for travelers eps Jesn enx3 4 suoneJedo Buys woad d inse umay ynsa umay ynsas umay ynsas umay ynses umay Jasn BJEPIJEA J8sn BJEPIBA uopewojupesn PEIXID ege O Doug euas 0 pauvo BIAS 0 pauu spuaddey upou asa ajyoud Aw peo esooup sasn J Buyiguiboypeyog SSP 9 woy paraos UONBLWOJU ay Wagaid JBUUBIS 9ABI Sse Sequence Diagram Insert Route D H Figure 18 He Situation dependent spontaneous mobile information service for travelers apod ejepdn d E fuenb pues oju paypesixa pues uomeuuojul 9eJix3 uoneunojui puas insa umay uoneunojur pues inse uunjey uopeuuojur pues uogesado Dune 4 Ki uoneuuojur ejepdry d unsa umay eles Buujserepdr ssep W04 p9 IG26J SEM Jey Buuiguibo1peuos ssep oj uonguuojul ay spues Jeuuejdje gJ SSEID l adh Jaye pos I inse pawos umay ejjoid pejojs pues Sequence Diagram Update Route D H Figure 19 FE Situation dependent spontaneous mobile information service for travelers z Les peJeAo0 ejejeq 4 senb pues oju pejoeJjxe pues uonguuojur pues nsa wmay uopewsojui pegxg gt uopeuuojur pues uon
54. happens on the current route then the user will get an automatic message sent to him presenting the problem and give him a new travel route Thanks to this the user won t be stuck in the traffic problem and will probably reach its destination in time Thesis work Master of Science in Electrical Engineering with emphasis on Internet Systems 2005 2006 Supervisors Markus Fiedler at the department of Telecommunication Systems Blekinge Institute of Technology Maria Jernb cker Saab AB Students Tobias Bertilsson inbOOtbe O student bth se Marten Persson inb0Ompe O student bth se Situation dependent spontaneous mobile information service for travelers Table of Contents 1 INTRODUCTION 7 1 1 Involved Parties 7 1 2 Background and Motivation 7 1 3 Goal of the Thesis Work 8 1 4 Structure of the Report 8 2 DEVELOPMENT PROCEDURE 10 2 1 Services 10 2 2 Target Groups 11 2 3 Graphical Structure Analysis 11 2 4 Information Sources 12 2 5 Different Cost of Services 12 2 5 1 Pay When Used 13 2 5 2 Purchase Application 13 2 5 3 The Combination 13 2 6 Security
55. has good documentation behind him 2 1 Services The next step in the planning phase is to try to define which services the application will provide This is that will attract the users to the application so this part needs some serious thinking If there are any services that are unique then these services should be pointed out These particular services might make possible investors invest in the product or convince the leading personal that your project is something that they should go for There should also be some information about how the users will be able to use each services i e where in the application are the services connected and if the users has to have some prerequisites of which kind 10 Situation dependent spontaneous mobile information service for travelers 2 2 Target Groups When working out a structure for the application it is important to try to keep the user in the center The easiest way of doing this is to try to find out the target groups for the application Here a target group means a group of users which has some common prerequisite 9 If the target groups can t be figured out then an overwhelming application could be created which will be worthless since it was made for the wrong target group Things that should be taking in concern are Age group Technology skill Education Financial status Gender Environmental All these are important which one of them that are the mo
56. he system with help of an ordinary web application i e Internet Explorer or similarly applications This design is probably the simplest to implement since the intelligence is placed only at the server The downside with this solution is for example that there will be a lot of data that has to be sent especially if the web site is fairly complex Not only the traffic information but also the webpage will be sent as data to the user Another problem is that the webpage needs to be adapted to be viewable on a mobile device This could be very costly for the user depending on the subscription especially now when the data cost with mobile solutions GPRS UMTS is still rather expensive There is yet another problem especially 27 Situation dependent spontaneous mobile information service for travelers when GPRS is used response times in case of large amount of data might be quite large But the biggest obstacle with this design is that the project is locked to this design If it needs to be changed it or upgraded it in the future most of the application will need to be rebuilt This means that the centralized design isn t scalable Another problem with scalability the server might need to deal with considerable load i e it might become a bottleneck a single point of failure etc The privacy in this solution isn t very good since all information about the users is stored on the central server All the information stored on the s
57. his choice will bring up the page where the user makes his searches for new routes 2 3 Help Menu arrow 4 ul 4 bout Help Menu Figure 28 Help Menu 88 Situation dependent spontaneous mobile information service for travelers This menu contains only two choices they are Help Menu About Help Menu Choice The help menu choice brings up the help page On that page there will be displayed useful information about the application that will help the user to work with the application About Choice This menu choice will display information about us who has done the application and some information about the application itself 3 The Various Pages 3 1 Load My Profile Page CR Travel Planner TEAR Start Routes Help Load Profile Z My covered stretches Figure 29 Load My Profile Page Figure 30 shows the site which will appear when the user logs in and chooses to load his profile from the file menu Here are six important things pointed out these will be explained more closely 89 Situation dependent spontaneous mobile information service for travelers Arrow 1 shows the area where the information about every covered route will be displayed This area s size is dynamic which means that it changes size according the amount of information that will be displayed there This is possible thanks to the scrollbar on the right size arrow 2 This scrollbars is attached to the textbox tha
58. his solution resulted in some more programming work but it was worth it 53 Situation dependent spontaneous mobile information service for travelers 6 6 PDA Problem The PDA a Compaq iPAQ H3900 with Pocket PC installed caused some problems The reason for this is that it wasn t a very new model The first problem that was noticed was the connectivity The PDA has a jacket which should support the PDA with a GPRS connection It should but it didn t This was tried several times but it never worked The solutions for this was quite simple just change to another jacket Another problem with the PDA was that applications hung in different way when they were run This made it really hard to try to find any solution to this problem If an application hangs when doing one thing it wasn t sure that it would hang the next time not even if doing the exact same thing This problem was really annoying there was no way to know if the code was wrong or it was just the PDA that had a bad day The only thing to do when this occurred was to either restart the PDA or sometimes it was enough to just kill the process that belonged to the application 6 7 Search Query to Stockholm Transport This was also a problem that was discovered when there wasn t much time left to correct When a search queries to SL s homepage was forwarded it was necessary to spell the name of the station in an exact way Because one part of this problem is that
59. i ete 177 BILE used e date ee 13 D trnonstrate i ees i BLH EE 3 7 Design 10 18 26 33 41 EEN 19 develop ioco 12 13 14 56 Developments 12 C Disconnect EG 34 e SE 56 68 Centralized oos etos 26 E LI EE 45 EQUINOS ss pi aa 11 Class diagram 44 Element sobre 18 EE qM TE 44 Enctyptedi aso roe odit 20 Combitech etos 2 56 E DO oe ARE Sexe DAR eR edu ee 21 Community trains 19 Event 27 31 40 47 55 Compact Framework 52 56 Competitive 14 20 F SOMME CU gereest 15 34 Feasibility study 10 Connectivity eec 53 Eegeregie 59 Content Provider 12 35 RUE 13 Contests uan ee peri eere Le 4 Fiedler 2 7 Cooperation esee 7 Figures Ee 6 47 COSE coo wert 12 20 48 Elteren 59 Cover Route 16 34 50 Future eere eene n 57 D G DAB Sob da 30 49 Galileo estet RUN 33 Situation dependent spontaneous mobile information service for travelers Et auae S assesses O ES E gt BTH Oe KEE ee 11 Net eegene 69 L e EE 8 33 GPRS uu seien 7 277 54 69 N GPS itu dpoitu o i UEM CAI 33 National cover 59 GROUP A ee 16 INGCUS E 10 H O VDI EE 30 33 OUT po adest een toc eegen 16 Open EE aia wens 02 I Implementation 10 11 P rte re EE 11 Parking 1O Sis secas za eink 59 information
60. iders for this project are Swedish Road Administration 14 Stockholm Transport 13 Trafik Stockholm 11 and trafiken nu 12 The content providers does two things in our system they push travel conditions and return route queries as shown in figure 10 Push travel condition This is the key feature in the application the feature that separates this product from other products The content provider sends out information to the server When something happens in the traffic something that affects the travellers then the server sends out a message to them These things could be road construction accidents or delays The information in this message that will be sent is a short description of where it happened which direction and how long it will last 35 Situation dependent spontaneous mobile information service for travelers Return route query This is just a simple answer to the query that our server sends to the content providers The question will be in the format of How do I get from point A to point B But there are some other things that the content providers do when this query is sent to them i e check problems What is meant with this is that when they select the best route they see if there is some traffic problem in some part of the route If there is then that part will be excluded in the search When this has been calculated and a matching route has been found then this route will be sent to the server 4
61. igure 19 Sequence Diagram Update Route 77 Figure 20 Sequence Diagram Delete Route Buddies dei ete ieu rH TO Figure 21 Sequence Diagram Event Arrived eere eee esee esses enses enses suse sa snse sns essensesenseesens 79 Figure 22 Sequence Diagram Logout eerie ee eese etes eese en ense en tese ta sns tn sens enses ense sa sn seen senses ssssenseseess OO 76 eeccccccccccccccccccccccccccccccecccececesee 73 Situation dependent spontaneous mobile information service for travelers ejjod Jesn DEI spuaddeu Buou ese ao Au pe01 asooyo esn J Buueuboeugog zept WOJ paniaoad uoneuuojul Ay JUaSalg JQUUBIA aABI Sept inse unay ynses umay qnse umay 1nsaj umay jnsa Winey Joen amp jepileA Joen BIEPIEA uoneulojupesn DEI BOINOS O PULO BOIS o Doug auas 0 28UU07 Sequence Diagram Login D H Figure 16 74 Situation dependent spontaneous mobile information service for travelers woees UMONSA c J8pi oi Waldo jynseJ umay nsa wmey uo uoneuuojul Aanb pues uogguaojul Aanb pues uonguuojul fsenh ES umangs USSU JO SE BWES OU si eunpsooud eu ejjoud atf ul u24885 Ij ag 0 soot JASN au JI ynsas umay uoneuuojul Aanb pues E S TEET I Sequence Diagram Searc
62. ile contains only information about the whole route and not about parts of the route So if the user has a route which contains a switch between subway Red and subway Green then only the information Red and Green will be stored The information of where the user will switch subway will not be stored 3 7 Competitive Services There are five competitive services for our application Not all of them are for mobile devices so they could hardly be called competitive services None of these five services had any real time information that is sent to the users The user s gets the information then they ask for it if something happens along the way they won t receive any information about it if they don t explicitly ask for it 20 Situation dependent spontaneous mobile information service for travelers 3 7 1 trafiken nu Stockholm http www trafiken nu Trafiken nu is a service that is available both on a stationary laptop PC and on a mobile unit When the service is used on a mobile unit WAP technology is used Trafiken nu offers information when the user wants to travel by public means of transportations Trafiken nu doesn t only provide information about the best route between point A and point B they also count in traffic information when they calculate a route Trafiken nu receives their information from among others SL VV and Trafik Stockholm Then they refine the received information and offer it to everyone on a pub
63. ime string coveredBusCheck char subwayCheck string coveredSubwayCheck char subwayName string coveredRoadsCheck char trainLine string splittedStringLogin string trainDays string arraylength int trainDate string covered int trainTime string check int e Ms createNewString in newstring string string roadsRoads string roadsDays string roadsDate string E roadsTime string roadsCheck string stri roadsName string searchRouteFrom string int searchRouteTo string threadRunning bool searchRouteTrain string msgFromClient string searchRouteSubway string msgToClient string searchRouteBus string inputStream object NetworkStream searchRouteExcludeRoads string outputStream object NetworkStream yourRoute string outputWriter object StreamWriter userID int client object TcpClient coveredRoutesCheck int clientEvent object TcpClient receivedLoginString string readThread object Thread coveredRoutes string collectedString string templnsert string temp string newMergedString string eventCheck char subMergedString string NSBClient transportationType string Client void updatelnfo string ClientWriter in toSend string string sendUpdate string CloseApplication void updateCheck string splittedNewString string TravelPlanner Main void updateRoute in route string in ty
64. imodal Long distance Train Long distance trains could easily be included in this application Banverket has information about departures arrival and delays etc Notification on Received Event A notification like a beep or some other sound can be implemented so the user won t miss an event as soon as it is received 59 Situation dependent spontaneous mobile information service for travelers NSB integration The inclusion of the NSB will make the application independent of which kind of network that is available 60 Situation dependent spontaneous mobile information service for travelers 10 References 10 1 Paper References 1 Larman C 1998 Applying UML and patterns an introduction to object oriented analysis and design New Jersey Prentice Hall 9 Lundhem S 2002 Att lyckas med ett webbprojekt Bilda f rlag 10 2 Digital References 2 GSM World What is GPRS GSM World Available on Internet http www gsmworld com technology gprs intro shtml 1 Collected 2005 12 07 3 MySQL AB Available on Internet http www mysgl org Collected 2005 12 07 4 Visual C Developer Center Microsoft Available on Internet http msdn microsoft com vcsharp Collected 2005 12 07 5 A simple Net TCP Socket Component The Code Project Available on Internet http www codeproject com csharp XY NetSocket asp Collected 2005 12 07 6 What is PDA Webopedia Computer Dictiona
65. ion Sources The following subsections describe different types of information needed by the application 3 4 1 Traffic Information Information if something happened which will delay the travel These things could be roadblocks e g when the Swedish Road Administration VV 14 has to repair the road but also accidents or other problems One source of this information is VV but also Trafik Stockholm 11 All these information are stored on trafiken nu 12 3 4 2 Public Transport This is information about busses commuter trains subways and other ways to travel with public transport Here the application will get information about when the transport will depart and arrive from where the transport will go from and where it will go to as well as where the bus stops and the subway stations are located This information is primary received from SL 13 and information about delays etc from trafiken nu 12 3 4 3 Road Information This is information about the best way to travel on the roads with i e a car or a motorcycle This also includes information about which condition the roads are in e g if it is ice or snow or if the road conditions are good This information comes from trafiken nu 12 3 4 4 Streaming Information To stream out the information DAB could be used In this case all the information is streamed out to all the users So for example if something happens on a train all users get the information and it is
66. ion has no positioning system which was considered to be beyond the scope of this work It would have taken too long to learn the necessary skills to use any of the standard technologies Moreover it would have incurred extra cost In an early stage of this thesis work there were some plans to perhaps use DAB in our application But it was decided to not use this technology One major reason for this decision was that the Swedish government has decided to cancel the deployment of DAB However as new standards might emerge and be deployed they could be incorporated which will be handled by the NSB 5 4 Chosen System Design In the planning phase three different system designs were developed a centralized one a decentralized one and a hybrid solution The design that finally was chosen was the hybrid solution The main reasons for this decision were e tis the smartest solution there is intelligence both on the server and on the PDA e tis the most secure solution for the future If the application will be commercial it s quite easy to develop it further e It makes it possible for the NSB to choose the best available connection for the moment e There won t be much data traffic between the PDA and the server only relevant data will be transferred So the solution was to create a free standing application that can run in the background when the user is listening for new events If the user wants to create a new covered route or s
67. is was the lack of time 25 Situation dependent spontaneous mobile information service for travelers 4 System design The system design chapter explains different types of designs that were thought out for TravelPlanner It also includes use cases sequence diagrams class diagrams and database diagrams explaining how TravelPlanner is built up 4 1 Different Designs Three possible design solutions are investigated the centralized solution the decentralized solution and a hybrid of the two of them All of them have pros and cons These will be discussed in this chapter 4 1 1 Centralized Design In the centralized solution most of the intelligence is placed at the server The user would just be a client which sends queries to the server The server would then process the queries and send the result back to the user The dataflow in figure 2 shows when a user sends a request This is done by some kind of input that the user provides This can be the address in the search function or pressing a button that generates a request This goes from the user to the server 1 The server stores the query in the database 2 3 and sends the request to the guiding system 4 The guiding system sends the route information back to the server 5 which sends the information back to the correct user 6 This information could be a webpage i 5 Guiding System Server Information System U
68. late to meetings etc For these people it is out of the question to get stuck in a traffic jam in the subway or on the bus There is one more sequence in order to avoid getting stuck traveling individuals need up to date traffic information that correlate with their routes Thus the PITTSA group found a need for creating a seamless communication technology to prevent that the users will loose their connectivity They needed an application that could demonstrate this technology So the background to this thesis work is that they needed a demonstrator to help demonstrate their new technique to provide seamless communication The application should be a mobile solution to a travel planner This application should not be depending on SMS WAP or any other older methods to send or receive data It shouldn t be depending on a certain kind of network instead it should use the best network that is available at the moment preferably WLAN or GPRS UMTS A user scenario could be that Pontus wants to travel between lvsj and Kungstr dg rden Pontus types in lvsj and Kungstr dg rden in his travel planner and receives the travel information which is current for him Then an accident occurs on the subway which was included in his travel route The user automatically receives a message on his PDA that informs him about the accident and presents a new travel route Now Pontus won t be late to his meeting in Kungstr dg rden because of the accident
69. lic web or WAP site Pros e Provides good information about public transport and walking distance e Displays how long time the route will take and its subroutes e tis possible to look into live camera photos get information about road messages average speed of the route parking places and weather conditions e Works with every technology that has the possibility to use WAP or WWW Cons e Doesn t include traveling with cars when they calculate their routes e The user doesn t get any real time information automatically if something happens that will affect its route e The only time the traffic condition messages is used is when the route is calculated in the beginning 3 7 2 Eniro http www eniro se Eniro provides a service for car travelers travelers who want to travel from point A to point B and only use their car to get there Eniro is available both on the Internet via a PC and through WAP via a mobile unit i e a PDA or a mobile phone Pros e Displays good information for traveling with cars includes all road routes e Works for everyone who has the possibility to use WAP or Internet 21 Situation dependent spontaneous mobile information service for travelers e It s possible to see a roadmap for the starting point the end point and for the whole trip e Is only working with car traveling e Has no traffic information e The mobile part is only working for those who have a Telia or
70. mation about their starting position is This information should be generated automatically with the help of MPS GPS or Galileo as discussed in section 3 8 But for now the users will have to type in their starting position manually This demands that the user has some knowledge of where the departing station is which means that the user can t be a totally stranger to the city 4 3 Use Cases 4 3 1 User Create covered route Update covered gt route Connect to service A Ps Disconnect from service Figure 9 summarizes the options that the user has when using the application Another way to explain this could be what the user notices when using the application Below these options are explained in detail User lt Figure 9 Use case User 33 Situation dependent spontaneous mobile information service for travelers Create and update covered route will include these functions When the user chose to create update or delete a covered route the user has to input some data into the system These data will be stored in the database on the server This will be done to protect the user s privacy Here follows the information that will be stored for every profile e Private name on covered route e Transportation type e Line e Day of validity e Time of validity Private name on covered route means that the user should have the possibility to choose a specific name for
71. menu The arrow with the number 2 attached to it in figure 24 points to the start menu In this menu the most important features are available According to figure 25 the start menu has five sub choices They are Exit Program Connect to service Start Page Check Latest Received Event View My Covered Stretches Between the Exit and the Connect choice there is a separator This is placed there to really point out that Exit is a strong choice it will terminate everything All other choices in the menus will not kick out the user from the application 85 Situation dependent spontaneous mobile information service for travelers Exit Choice As said above this choice will terminate the application The user will not get a question to confirm the exit the application will just shut down After this is done the application will not be able to receive any more events Connect To Service Choice This is the connect to service choice When the user has clicked on this choice the user will be able to receive event manage his covered routes and make new searches The things that happened in the background are that the users profile is collected from the database on the server This information is temporary stored on the PDA to make the use of the application faster and smoother Start Page Choice This menu choice will bring to front the start page Check Latest Event Choice This choice will check fo
72. mepage 13 for a new route This will be automatically forwarded to the user and be displayed on his PDA At the moment there is no part that handles the exclusion of damaged routes But in the future this will be done by SL 13 The application is designed so that the user will never miss any events when being logged on to the service If the user doesn t read the events they will simply be stored in a queue so that the user can read them later The application is designed to check for new events every other minute but it is configurable so it could be set to any interval 51 Situation dependent spontaneous mobile information service for travelers 6 Problems As in all application development some problems were experienced The most important of these problems that were found are listed below and short explanations of each problem and its solution are also listed 6 1 Compact Framework Since the application was developed for a PDA the standard Microsoft Net Framework couldn t be used It is made for computers and servers but not compatible with PDA s The application had to be developed in an environment which is called Smart Device Application in Microsoft Visual Studio Net 2003 But to do this Compact Framework had to be used Microsoft scaled off several features when they created Compact Framework This caused several problems but the most irritating one was that almost all information and help available
73. mount of sent data between the user and the server When there 1s some traffic information received at the server this function performs a first filtering and checks the database on the server to see which user it concerns Then it forwards the information to these users This is a key function in this application 4 4 Sequence Diagram Figures in Appendix C All the sequence diagrams are based on the hybrid solution It is however possible to use them with the centralized and decentralized solutions as well with some minor modifications 4 4 1 Login Procedure This will describe the dataflow for the login procedure and for the load profile procedure The login process will be done automatically when the user starts the application e The TravelPlanner forwards the login information to Core This is done by using NSBClient and NSBCore to get a connection e The Core checks in the database to see if the user has the right login information If the users username and password is found and matched against the database then the user is registered in the database as active e The Core returns a message containing specific user identification and the specific profile that belongs to the user to TravelPlanner through NSBCore and NSBClient that the login procedure was successful e The TravelPlanner sends the received message to SortedLoginString which performs necessary operations on the message e If the user has chosen to load p
74. n has the same problem with upgrades in the future as the centralized solution If there are any interests to change the design structure in the future then very much of the application has to be rebuilt The major obstacle with decentralized solution 1s that if the whole application and all intelligence is placed in the PDA the battery time might be critically low So low that the users has to consider if it is worth to have the application up and running which is the idea with this kind of applications 4 1 3 Hybrid Design In hybrid design the application is divided such that it is placed both in the PDA and the server The server will work as a gateway between the users and the content providers This will make the communication between our application and the content providers much smoother Now the content providers only have to send their traffic information to one place Then it is up to the server to forward the information merely to concerned users 1 2 M ES Guiding System Server Information System User 4 Database for Database for route profile and relevancy Figure 6 Hybrid design Planning In figure 6 the dataflow in our hybrid solution can be seen It starts with the user making a request in the PDA The application sends the request to the server 1 30 Situation dependent spontaneous mobile information service for travelers The se
75. nformation as in search route is sent here which implies the small amounts of sent and received data Update covered route Data sent 400 Bytes Data received 200 Bytes The information as in search route and insert route are sent 5 2 The Cost of the Service In the solution that was created there are almost comparably low costs for the user The information data from the content providers are free and according to the result presented above there are not much data transferred between the server and the PDA In the thesis work this application will be free but if it should be commercial cost for the user could arise when the user purchases the application It shouldn t cost anything for the user to use the application except for the data traffic If it will cost money to use the application then the amount of users might not be quite as high as if it was for free 48 Situation dependent spontaneous mobile information service for travelers 5 3 The Information Sources The traffic information that is used in our application is collected from trafiken nu 12 RSS Rich Site Summary site Here information about for example accidents delays etc is received The information about public transportation is received from the Stockholm Transport web page Here the server application receives information about the routes that the users search for as well as information about departure and arrivals The applicat
76. nique service There are several services out there that are almost the same This is a straight forward service The user types in the name in the departure station and the destination This query is forwarded to SL s homepage 13 which calculate the best route for the user The information about the route is then displayed on the PDA there the user can see it Then the user has two options either accepting the given route which will be included in covered routes or search for a new route Receive Event with Traffic Information This service makes TravelPlanner unique it is the added value of the application Without this service would TravelPlanner be just another ordinary travel guide application The users will receive information if something happens on their covered routes The information that they receive are information such as which route it concerns which direction which date day and how long it will go on This information is gathered from the trafiken nu 12 homepage and forwarded only to those users that it concerns These users are those who have this specific route in their covered routes 50 Situation dependent spontaneous mobile information service for travelers When the users receive this information they can chose to search for a new route that will exclude the damaged route simply by clicking on a button in the application The rest is handled automatically and TravelPlanner contacts SL s ho
77. o gol Roads Stretches Figure 26 Update My Covered Stretch Also this menu has four sub choices just like the My Covered Stretch menu The choices are Bus Subway Train Roads When some of these choices are clicked it brings to front the update page for the different routes If for example Bus is clicked on then all covered routes that are for busses are selected from the database Then the user could change the data that belongs to any bus in an easy way 87 Situation dependent spontaneous mobile information service for travelers Create New Covered Stretch Choice This menu choice is a sub menu to the search route menu When this menu is opened it looks as shown in figure 28 My Travel Route Update My Covered Stretches Create Mew Covered Stretch Cover Bus Stretch Search For Mem Route Cover Subway Stretch need to gol Cover Train Stretch Cover Road Stretch Figure 27 Create New Covered Route This new menu that appears contains for choices They are Bus Stretch Subway Stretch Train Stretch Road Stretch Then these choices are clicked on a new page will be displayed On this page the user can insert new route to cover The covered routes are divided into four sub categories They are Bus Subway Train and Road What the user should chose depends on what kind of transportation that will be used Search For New Route Choice T
78. o use SMS and GSM would probably be a little to slow and may even be to expensive to establish a data connection Microsoft Visual Studio Net 2003 Microsoft Visual Studio Net 2003 is the comprehensive multi language development tool for rapidly building and integrating XML Web services and applications Visual Studio NET 2003 offers a highly productive environment in which to develop a broad range of Microsoft NET connected applications and technologies Using the high performance Microsoft NET Framework run time environment Visual Studio NET providing powerful tools for designing building testing and deploying Web services and applications as well as sharing best practices and guidelines in a team environment 8 This is the developer tool that we used to create our application MySQL MySQL stands for My Structure Query Language and is one of the world s most popular open source databases The reason why we chose MySQL is that it is a free program It is quite easy to use and both of us had some experience with this database It is platform independent it can be run on over 20 different platforms 3 PDA Short for personal digital assistant a handheld device that combines computing telephone fax Internet and networking features A typical PDA can function as a cellular phone fax sender Web browser and personal organizer Unlike portable computers most PDA s began as pen based using a stylus rather than a k
79. on the Internet was created for the standard Net Framework After a while another problem was discovered The emulator in Visual Studio on the PC didn t want to run the application anymore It complained on a part in the code that didn t contain any errors So the solution was to stop using the emulator and simply build the application and debugging it when an error has occurred This solution made it possible to run the application on the computer instead on the PDA which was quite time consuming So this was a big plus 6 2 Exiting the Application This problem wasn t encountered until in the end of the programming phase Compact Framework doesn t support the same exit commands as the standard Framework does especially when working with threads When working in standard Framework there are methods like Enviroment Exit 0 that will close the whole application and everything that concerns the application Standard Framework handles threads much better for example there is a method called join which blocks the thread so that it is possible to kill it These methods aren t available in Compact Framework since the application has to be able to run in the background There is an add on available called OpenNETCF which handles threads much better than Compact Framework But this was found out too late there was not enough time to learn the necessary programming skill to manage to control this add on Its use should be a part of future work
80. pe string in subMergeCount int void UpdateString changeReceivedLoginString in receivedLoginString string in sendUpdate string string Figure 14 Class diagram Client 44 Situation dependent spontaneous mobile information service for travelers Figure 14 shows the classes in the client side application The diagram shows the classes attribute and the methods and it also shows the relations between classes if there are any On the client side there are six different classes Two classes Form and TravelPlanner handle all the graphics on the PDA The Form class is the main class there TravelPlanner class is a part of the Form class The NSBClient handles all the connection against the server Currently the connection is based on TCP IP This NSBClient should be replaced by a fully functional NSB Network Selection Box later on The class MergedTypeString is used when grouping the information on what kind of transportation type it belongs to Class SortedLoginString is used to process the information received from the server when the user is logging in or when the user loads its profile Class UpdateString handles updates made by the user i e the user updates a covered subway line 4 6 2 Server On the server side there is also six classes as shown in Figure 15 The diagram shows the classes attributes and the methods Class NSBCore has
81. r the latest received event and display it on the Event page By the latest received event we mean the last time that the user received an event was displayed on the PDA It is possible that more than one event is displayed while the user uses the application View My Covered Stretches Choice When this choice is made the profile will be brought to the front All of the user routes that are stored in the database and still being valid are received and displayed on a text box with a scrollbars attached to them 2 2 Routes Menu arrow 3 My Travel Route Update My Covered Stretches Create New Covered Stretch k E Search For Mew Route Bl oae naad ke aal Figure 25 Routes Menu 86 Situation dependent spontaneous mobile information service for travelers As shown by figure 26 the search menu has four sub choices they are My Travel Route Update My Covered Stretch Create New Covered Stretch Search For New Route My Travel Route Choice Here will the user s route be displayed All information which concerns the user on his travel will be provided here such as every substitution of busses departure times and arrival times Update My Covered Stretch Choice This is the first sub menu under search route menu It looks as shown in figure 27 y Bus Stretches Create Mew Covered Stretch Subway Stretches E Search For New Route Train Stretches Bless mper em moe pm need t
82. r the same reason 4 5 1 Database Server Core transportationTypeld Transportation Type timelnterval weekday PK transportationTypeld stretch m transportationType routeName specificDate excludeStretch Userlnformation RouteUser PK routeUserld FK2 userld userld userName userPassword ipNumber active eventSent Figure 12 Database design Server core database Figure 12 shows the tables and their fields in the database It also shows the relations primary keys PK and the foreign keys FK Route table This table contains information about the routes that the users have searched for or routes that the users want to cover The information stored in this table is information about the route i e subway line bus line etc and not information about were the users start stop or make changes on their routes It has two relations one to the RouteUser table and one to the TransportationType table The relation to the RouteUser table is one to many 1 i e one post in the Route table can have one or several posts in the RouteUser table This means that a user can have many routes and since the route is unique because its routeld it could 41 Situation dependent spontaneous mobile information service for travelers only belong to one user The relation to the TransportationType table is one to one 1 1 i e one post in the Route table must have one
83. resses There are two different kinds of addresses that could be configured on the server side The first one is where the server gets information about event This is configured in the file called Event cs The parameter is set in RSS located on the 99 Situation dependent spontaneous mobile information service for travelers first row in class Event The value can be either a local file or an http address The program is designed for reading an rss xml file from trafiken nu If the RSS file isn t built up in the same structure as provided by trafiken nu it may not work at all The other address that could be configured is the query address to SL This is harder to configure since it s a third party where the information is gathered If SL changes a name on any of their variables that we send to them the search function doesn t work until our address is re configured To re configure the address you have to view the source code generated on their website and get all necessary information about the variables This is time consuming but it has to be done to get it working again 2 2 Client side On the client side there are two parameters that can be configured It is the address to the server and which port it communicates on These parameters is also configured in Visual Studio which means that the project must be re compiled for the changes to take place Make the changes and re compile and transfer the application to the PDA
84. rmation is automatically sent to the server The data that are sent are a number to tell the server that a login procedure has started the user s username and password Then the PDA will receive data about the user s stored covered routes This is made like this to make it smoother to use the application by minimizing the waiting time for the user Event arrived Data sent 0 Bytes Data received 350 Bytes event 47 Situation dependent spontaneous mobile information service for travelers There is no data sent from the user when the user receives an event But the user receives roughly 350 Bytes per event Most of the time there arrives more than one event at the time therefore the user will receives a larger amount of data when this happens Load profile Data sent 100 Bytes Data received 650 Bytes The data that are sent when the user chooses to load profile from the menu is almost the same as when the user logs in But load profile procedure doesn t send as complex information as login does The respond is more alike both procedures receive the user s covered routes from the server core database Search Route Data sent 400 Bytes Data received 450 Bytes Information about the search is sent to the server core database This information addresses the type of transportation the line road and day and time Insert covered route Data sent 400 Bytes Data received 200 Bytes Almost the same i
85. rns it to TravelPlanner 39 Situation dependent spontaneous mobile information service for travelers e TravelPlanner forwards the information to Core This is done by using NSBClient and NSBCore to get a connection e The Core processes the information and forwards it to Stretch Stretch processes the information and calls the method DeleteStretch The method sends information to DBEncapsulation e The DBEncapsulation built the query string and sends it to the database e The covered route will be deleted from the database Core returns a message to TravelPlanner saying that it succeeds e TravelPlanner forwards the information to SortedLoginString The information is the same that was forwarded to Core earlier SortedLoginString processes the information and updates the local profile 4 4 6 Event Procedure This will describe the dataflow when an event occurs The event can come from one of the content providers e Core checks for a new event at a given time interval by calling the class Event The content provider returns the result of event at least the latest e H there is more than one event received Event processes each event and compares with the database through DBEncapsulation if it concerns any users If so the event will be sent to the user through NSBCore and NSBClient e TravelPlanner checks for received event at a given time interval and if has received a new event it will be presented to the user 4 4 7
86. rofile then will the message that is received from SortedLoginString be presented to the user 37 Situation dependent spontaneous mobile information service for travelers 4 4 2 Search Procedure This will describe the dataflow for the search procedure To start the dataflow the user must insert information in the search text field that is presented when choosing Search new route from the menu e The TravelPlanner forwards the search information to Core This is done by using NSBClient and NSBCore to get a connection e The Core forwards the information to Search Search processes the information and builds a query string which will be sent to the Content provider e The Content provider processes the query and returns a webpage as the result to Search e Search gathers the necessary data from the webpage and returns the information as a string to TravelPlanner through Core NSBCore and NSBClient e TravelPlanner presents the result for the user and the user has the option to store the result in the user profile The procedure for this will be explained below 4 4 3 Insert Route Procedure This will describe the dataflow for the insert route procedure To start the dataflow the user must insert information in the fields name of the route line date and time presented when choosing Covered new route from the menu or when choosing to add search result to the profile e The TravelPlanner forwards the inform
87. rt Routes Help Event Happens Vagarbete E4 UppsalavagenE 4 p A Uppsalavagen mellan Trafikplats M by och Trafikplats Arlanda i riktning mot Haga S dra 2005 12 05 12 27 l agarbete ett k rf lt avstanatE 4 p Uppsalavagen mellan Trafikplats M by och Trafikplats Arlanda i riktning mot Haga Sodra E 4 Lansgransen AB C lan til Tpl Aranda Rackesarbete v nster korfalt avstangt Galler till 2005 12 05 15 00 7 Alternate Route Figure 34 Event Happens Figure 35 shows how it looks when an event has arrived To be able to receive events the user has to be connected to the system Start Connect To Service Then the system knows that the user is active The most important thing on this page is the event textbox in the middle arrow 1 There all events will be displayed If several events arrive at the same time they will be listed beneath each other This is possible thanks to the scrollbar to the right With it the user can scroll down the textbox and view all events When an event has arrived the user could either click on the OK button arrow 2 This will tell the system OK I have seen the event But I won t do anything about it Or the user could click on Alternate Route button arrow 3 This will tell the system OK I have seen the event I need a new route If the user wants to receive any more events he has to click one of these buttons Or else the events will be stored in the system until the user
88. rver sends the request further to the guiding system 2 The guiding system processes the request and sends an answer back to the server 3 The server stores necessary information in the database for future use 4 5 The server sends the answer from the guiding system further to the application in the PDA 6 The application stores the information about the route in the local database 7 and presents the information to the user 8 4 a 11 Guiding System q 12 Server 1 Information System User oO ARO 4 z Database for route H Database for profile and relevancy Figure 7 Hybrid design Event The dataflow when an event occurs is shown in figure 77 The information system sends all events to the server 1 The server performs a relevancy control in the database to see if it concerns any user 2 3 If it does it will forward the event to the user users PDA application 4 The application stores the event in the database 5 6 presents it for the user and processes a new request out of the event and sends it to the server 7 The server updates the database 8 9 The server forwards the request to the guiding system 10 The guiding system processes the users request once again and returns the result to the server 11 The server forwards the new route to the PDA 12 The application stores the route in its local database
89. rvices In appendix E all necessary information about how to configure the application will be found 9 Situation dependent spontaneous mobile information service for travelers 2 Development Procedure The first thing that has to be done before the design and the implementation of the application is the feasibility study pre study In this study the developers should look more closely on how the application s structure should be built up how they could make it user friendly and they should try to find a target group that the application is to be created for Another reason for doing the feasibility study is to localize all the needs in the system i e which prerequisites are there which structure the application should have and what kind of services the application should provide whether there is a need of services from third parties which costs that can be identified etc If there is a need to collect information from some content providers this need and the nature kind of information has to be identified here Another very important issue to study addresses security What kind of security should the application have and why what are the threats If the feasibility study is done correctly then the designer has a road map on how to create the application The major issues are already decided before the implementation starts Of course changes can be made on the way but they are easier to perform since the designer
90. ry Available on Internet http www webopedia com TERM P PDA html Collected 2005 12 07 7 MSDN Library Microsoft Available on Internet http msdn microsoft com library default asp url library en us dnce30 html ppcfaq asp Collected 2005 12 07 8 Visual Studio Launch Microsoft Available on Internet http msdn microsoft com vstudio previous 2003 fag default aspx Collected 2005 12 07 10 ConnectionStrings Available on Internet http www connectionstrings com Collected 2005 12 13 11 Trafik Stockholm Available on Internet http www trafikstockholm com Collected 2006 02 21 12 trafiken nu Available on Internet http trafiken nu Collected 2006 02 21 61 Situation dependent spontaneous mobile information service for travelers 13 Stockholm Transport Available on Internet http www sl se Collected 2006 02 21 14 Swedish Road Administration Available on Internet http www vv se Collected 2006 02 21 15 SQLite Available on Internet http www sqlite org Collected 2005 12 07 62 Situation dependent spontaneous mobile information service for travelers i ane S Basse E E BTM 3 11 Index A TE EE 3 Database 16 29 41 43 53 AerotechTelub 3 Dataflows eet tert 28 37 EE 11 Decentralized ME 28 Application 7 11 18 56 Ie bio 56 RR uh 12 Automatic voor RA dis 24 RE i Delete EE 39 B DEAN ioco a
91. s a few problems regarding involved third parties for example the search query to SL and traffic message from trafiken nu Solving these problems was more time consuming than solving other problems To get a graphical user interface to work smoothly we had to try to think like a user If a user won t feel being in control of the application then it won t be used So getting menus and information to contain right text and at the same time be user friendly requires a lot of thinking and creativity The application are finished resulting in a working product which solves most of the tasks that we defined in the introduction The application has been tested by the developers and also other persons have been asked to test the application as well in order not to overlook any problems This was made to be sure that the application was working correctly The reason that we brought in other persons was that it is easy to be blind if you are testing your own application Since the developer knows how to work with the application many shortcoming errors will probably be missed These testers were testing the application on the PDA but some also tested it on the computer which was easier for them as not all of them have previous PDA experience They were creating covered routes made some searches for routes and received events with traffic information In other words they were using all the functions that the application provides We also had Maria
92. s in this description belongs to this target group TCP Socket A socket is an end point in network communication it is uniquely identified by an IP address and a port number TCP IP is the most common protocol used for inter process communication In many cases it is also the most efficient way to send data between client and server programs The parties communicating via TCP socket can live on different machines on the network but they can also live on the same machine or even within the same process 5 This is used to send data between the server and the client using GPRS TravelPlanner TravelPlanner is the name of the application that was created in this project work Use Case A use case is created in the beginning It is made to make it possible for the creator to find out what the users will be willing to do A use case shows which functionality the user has in different phases in the application It is also a part of the creators roadmap 71 Situation dependent spontaneous mobile information service for travelers Appendix C Sequence Diagrams 72 Situation dependent spontaneous mobile information service for travelers Table of Figures Figure 16 Sequence Diagram Login eerie eee ee eee enne en enses tuse tasse tns ens enses ense sa sns ens senses sessenseseess 7 Figure 17 Sequence Diagram Search Route Figure 18 Sequence Diagram Insert Route F
93. s the string in the right format and returns it to TravelPlanner TravelPlanner forwards the information to Core This is done by using NSBClient and NSBCore to get a connection The Core forwards the information to Stretch Stretch processes the information and calls the correct method i e UpdateStretch The method sends correct information to DBEncapsulation The DBEncapsulation builds the query string and sends it to the database The covered route will be updated in the database Core returns a message to TravelPlanner saying that it succeeds TravelPlanner forwards the information to SortedLoginString The information is the same that was forwarded to Core earlier SortedLoginString processes the information and updates the local profile 4 4 5 Delete Route Procedure This will describe the dataflow for the delete route procedure To start the dataflow the user must delete information about a stored route presented when choosing Update covered route from the menu After the user has selected to update a covered route from the menu TravelPlanner sends the local profile to MergeTypeString MergeTypeString groups the profile into transportation types and return the result to TravelPlanner TravelPlanner presents the field containing the information about the covered route that the user chooses to delete TravelPlanner sends the information that should be deleted to UpdateString UpdateString builds the string in right format and retu
94. ser Database Figure 2 Centralized design Planning 26 Situation dependent spontaneous mobile information service for travelers When an event occurs where will be some minor traffic flow changes This is shown in figure 3 The server receives an event from the information system 1 The server performs a relevancy control in the database to see which users it concerns 2 3 If it doesn t concern any user nothing will happen But if it concern one or more users the server updates the database and creates a new route request and processes it to the guiding system 4 The guiding system sends back the new route for every request to the server 5 and the server sends the information to each concerned user 6 5 Guiding System Server 4 Information System User Database Figure 3 Centralized design Event The amount of data being sent from the user to the server is in this case small since all the information that been send is only the request On the opposite direction from the server to the user the amount of data can be larger i e a whole webpage may be transferred The traffic flow between the server the servers database the information system and the guiding system is much higher since all information in the system passes through here In this design the user application could be as simple as a web client the user could log into t
95. ser has logged into the system then the application displayed an error message instead of the event as it was supposed to The reason of this problem was that the application tried to work with an empty string This was easily solved by creating a check method to see if the string was empty before its processing started 6 9 Collecting Traffic Events The traffic events were collected from trafiken nu They are providing a RSS file on their website This RSS file is programmed in XML The application can t just use this code in the original form and then it would end up with a bunch of worthless text 1 e tags etc So the useful information has to be extracted from the code Another reason for this is to minimize the traffic load 55 Situation dependent spontaneous mobile information service for travelers 7 Discussion Developing a mobile application is very interesting The design part of the application was very time consuming and was changed several times The goal was to make it as user friendly as possible and it also had to fit the requirements from both Saab AB and from Blekinge Institute of Technology From the design document we implemented the application in C using Microsoft Visual Studio While implementing we ve noticed some difficulties One of them was developing against a PDA We had to use Compact Framework instead of the usual framework which is used on regularly computers to solve the problem There wa
96. st important depends on the application It can be different from case to case but age group and technology skill group are very often among the most important when creating an application When the target groups for the application have been defined the challenge in trying to create an application that suits as many of these groups as possible This is very important if this is made in a good way it will mean that there are many users that will have need for the application If the application will be commercial will this result in more income and most developers and creators are looking for this 2 3 Graphical Structure Analysis One major reason for performing a graphical structure analysis is to find a functional structure for the application A functional structure means a structure that seems logical for the user If the application doesn t have a functional structure then the users won t feel comfortable using it The graphical structure analysis also makes the work much easier for the developers when the implementation has started If they have a well performed analyze to work against preferably with some simple sketches it will be much harder for them to make any major mistakes and their job will be performed much 11 Situation dependent spontaneous mobile information service for travelers faster This saving of time and effort can be invested in creating some extra features for the users In the analysis phase
97. t contains the text Let us now have a closer look at the information in the textbox First of all there is a word Bus in this case which denotes which type of transportation it addresses arrow 3 Subsequently all routes containing busses will be displayed Under transportation type the name of the route arrow 4 is found After that the bus lines of interest for that specific post are specified arrow 5 Finally relevant date and time information is given Days addresses the sorted weekdays and Time addresses the sorted hours arrow 6 After time there could be another non mandatory field and it is the Date field This will only be displayed if the user wants to cover a route during a specific date After this there is a one row space before the next post is listed 90 Situation dependent spontaneous mobile information service for travelers 3 2 Create New Covered Stretch Page CR Travel Planner ES Start Routes Help Bus Name on my covered stretch 8 Busses to get information about 1 Separate with comma t your busses here Days Monday Friday 2 Tuesday E aage Wednesday Sunday Thursday Date yyyy mm dd 3 e put a specific date here Time M mem Mon Com Cu 4 0808 1213 0910 I 1314 Other Time Hours only From Figure 30 Create New Covered Route The screenshot shown in figure 31 is stretched out so that the whole page can be shown If it w
98. the covered route so it will be easier for the user to recognize the route The user could for example cover the route between his home and his work and call it work This name doesn t have to be unique since it is only displayed for the user that has created the covered route All routes have a unique id but this id is never displayed for the user it is only used in the database Transportation type means which kind of vessels the user prefers to travel with for example train subway bus or car Line means that the user specifies the line i e number of the bus line subway line etc Day of validity means that the user specifies which day the route valid For example if the user travels each Monday Tuesday and Wednesday then the user should select these days Time of validity means that the user specifies which time the route valid For example if the user usually goes to work between 7 and 9 AM and goes home from work between 4 and 6 PM these times could be inserted into the profile Connect to service This will be the first activity the user has to perform It is also possible to make this automatically in the future Then the user starts the application the unique username and password for the user that is stored on the PDA will be sent to the server Then the user s profile will automatically be retrieved from the profile database on the server Actions that will happen are connect to server and retrieve profile
99. the different important areas of the application should be defined i e which one is the most important one for the user and which one will give the developer most job to create the functionality for are there any static or dynamic areas When developing a graphical application the colors are also very important not only to make the application look nice but also to try to find colors that provide good contrast to each other This is to make it easier for color blind users or users with bad sight to use the application 2 4 Information Sources The next step is to try to decide if there is a need of some information from any content providers or a third party The kind of information the application needs should be defined as precisely as possible The next step is to find someone who could provide this information If this isn t possible the developers have to decide if it is possible to create this information by themselves If it isn t then it might be worth thinking if this service is necessary One example on this could be that you are developing a weather application that will display weather information This applications need to collect this weather information from some content providers One possible content provider could be SMHI in this case 2 5 Different Cost of Services Another important phase in the development procedure is to try to find the eventual costs in the application Is there anything that has to be bought or
100. the most used of them all which is a reliable source of income First the users pay for the application when they are buying it Then they have to pay for the service every time they want to use it In this way the distributor can put a low price on the application and a quite low fee on using the service This is possible since they know that they will receive enough payment anyway 2 6 Security In these days security is a big issue to think of when developing an application Which data that needs to be encrypted and which data could be left as it is needs to be defined If the application is stationed in at least two different places then the data that are necessary to be send between the different nodes also need to be defined To create a secure application the amount of data traffic should be as low as possible With personal information about the users such as social security number addresses and so on there is a need of even more security This information isn t allowed to be stored on the same way as all other data In Sweden there is a specific law that explains how to handle this kind of information PUL 13 Situation dependent spontaneous mobile information service for travelers 2 7 Competitive Services This is a very important phase in the development procedure If this isn t done in the right way the developer could be standing there with a product that there are no more market for The different ser
101. tory as ServerCore exe 1 3 Client installation To transfer the application to the PDA there are a few step to perform First make sure that the application on the PDA isn t running Connect the PDA without the GPRS jacket to the PC through the docking station Start the Visual studio project Travelplanner csdproy Configure the server address To do this see section 2 2 in this appendix Re build the application by selecting Pocket PC Device in the drop down menu in the toolbar and pressing f5 will transfer the application to the PDA The application will be located in Progarm TravelPlanner on the PDA Close the application and disconnect the PDA from the PC Connect it to the GPRS jacket and get a GPRS connection At last start the application again 98 Situation dependent spontaneous mobile information service for travelers 2 Application configuration There are a few parameters that are possible to change both on the server side and on the client side These parameters and their location ar specified in the following 2 1 Server Side On the server side there are mainly four things that could be configured It is the connection to the database which port number should be used for communications between the client and the server how often the server should check for new events and the addresses used when checking events or when searching routes All configurations are done in Visual Studio
102. ublic transport means the different kinds of transportation that are available such as bus train subway etc Individual traveling by cars motorbikes etc is not included Prerequisites A prerequisite means something that is demanded to make another thing possible Route A route is the whole way from point A to point B that the user will travel A route is created when the user want to get information on how to get to a certain place A route consists of one or several links or stretches Service A service is what the application is offering the user In this application the user can search routes create profiles and receive related events Service Provider A service provider is a third party that provides a service Trafiken nu is a service provider to us but in the same time TravelPlanner is a service provider to the users through the application Sequence Diagram Is a diagram that describes the data flow through the application This diagram is made before the programmer starts to create the application This is a part of his roadmap that will be used to create the application Stream When some data are sent out to one or more users this technique can be called streaming data 70 Situation dependent spontaneous mobile information service for travelers Target Group A target group is a group of people that are similar in some way For example they are between 30 and 40 men and have a PDA That man who fit
103. up to the application to determine whether the information is relevant for the user or not 19 Situation dependent spontaneous mobile information service for travelers 3 5 Cost in TravelPlanner The first type of cost that was identified is the data traffic cost between the PDA and the server It is the user that will be charged for this traffic depending on what kind of mobile subscription the user has The second type of cost is the cost for collecting the traffic information At the moment there are four different services that might be used www sl se Stockholms Transport 13 WWW VV Se Swedish Road Administration 14 www trafikstockholm com Trafik Stockholm 11 www trafiken nu trafiken nu 12 This information is for free its official information and is paid by taxes In this thesis work only SL and trafiken nu will be used 3 6 Security The only information that needs to be encrypted is the information that concerns a user s position i e Pontus s location is N 53 degrees 44 77 E 20 degrees 29 32 This is the only information that could be of interest for other people which could use this in a undesirable way All the other information that will be sent concerns only travel routes between two places It won t be any harm if someone finds out which way between two places is the best This will only work as long as the user can t be identified The information in the user s prof
104. ut the users stored All the fields are mandatory these are username password ipNumber active and eventSent This field is needed for the login process ipNumber and active are to know where information should be sent and eventSent is to know when that last event was sent in order to avoid duplicate events The UserInformation table has relation to one table It has a one to many 1 relation to the RouteUser table This relation makes it possible for one user to have many routes since RouteUser is a help table where the route and the user are combined The primary key is userld 42 Situation dependent spontaneous mobile information service for travelers 4 5 2 PDA Database Route roueld 1 1 KE startTime to i t stopTime rom to routeDesc from eventDesc eventType FK1 routeld Figure 13 Database design PDA database Figure 13 shows the design on the database located on the PDA The figure shows tables and their fields relations primary keys and foreign keys Route table This table contains four fields The to field will contain information about where the user wants to travel The from field will contain information about where the user wants to start his route In the last field the routeDesc field information about the route in general is stored The Route table has a zero to many 0 relation to the Event table This means that for one route there can occur zero or man
105. vices that are out there today are examined in this phase What these services can do and why the user should use the particular application that the developer is developing instead This is some questions that the developer needs to ask himself Every competitive service should be examined and documented What are the pros and cons for the service in question Which is the most valuable service that the competitors are providing Is there anything that can be improved These are some question that could lead to developing an application that the user prefers instead of the competing ones and so the application service under development finds it market 2 8 Other Information In the developing procedure it is important to try to pinpoint as many services as possible This may feel like doing unnecessary work but it will be worth it when it comes to the developing and implementing phase The time and effort that are saved here can be used later on to create more features for the users But this will only work as long as the findings are well documented It will save time effort and money and the amount of mistakes will be smaller Given a precise developing document the consequence of any possible mistakes will probably be quite small 14 Situation dependent spontaneous mobile information service for travelers 3 Development of TravelPlanner Much of the theoretical pre studies were carried out in the course ETD013 Mobil
106. y are curious They want to try new things Demand Make the application easy to use but still robust 3 2 4 Solution To find a structure that fits all these three target groups the application is constructed such that it will have two main parts menu and main window The application collects data for the four major types of urban traveling bus subway train and roads This is the most interesting feature for target group 1 thanks to this service they will have information about all public transport nearby Target group number 2 will enjoy the application thanks to its unique service the event handler When something happens the users concerned by this will automatically get information about this event This gives the user the possibility to easily make a new search in order not to get stuck in the queue or whatever the event warned for This application is easy to use and the structure is built in a logical way so that the target group 3 won t be afraid of using it But at the same time it is very 17 Situation dependent spontaneous mobile information service for travelers robust i e nothing critical will happen if the users makes a mistake The users can undo most of the actions 3 3 Graphical Structure Analysis To find a functional structure over the design we looked more closely on the different elements which together create the base of the application These elements are the menus and the main window The
107. y events In other words this means that an instance in the Route table could have one or more instances in Event table connected to it routeld is the primary key in this table Event table This table stores information about events that come from the content provider These events could be crashes delays or accidents The information that will be stored is start and stop time of the event which route the events belongs to some description of the event and which type it is There will also be a field which will contain a foreign key to Route table this field is named routeld The Event table has a one to one 1 1 relation with Route table i e one event is only valid for one route eventld is the primary key in this table 43 Situation dependent spontaneous mobile information service for travelers 4 6 Class diagram 4 6 1 Client TravelPlanner MergeTypeString nsb NSBClient mergedTypelndexCount int loginString SortedLoginString i int myMergedType MergeTypeString newMergedString string myUpdateString UpdateString newRawString string user string indexCount int p E busLine string busDays string busDate string busTime string SortedLoginString busCheck string coveredbus string busName string coveredtrain string subwayLine string coveredsubway string subwayDays string coveredroads string subwayDate string coveredRoutes string subwayT
108. your help this thesis wouldn t have been possible to do Tobias Bertilsson and M rten Persson Situation dependent spontaneous mobile information service for travelers Abstract Situation dependent spontaneous mobile information service for travelers This application is created to provide valid and relevant travel information to travelers on their journey The application is proposed as a demonstration for seamless communications in the VINNOV A sponsored project PIITSA Personal Information Intelligent Transport systems through Seamless communications and Autonomous decisions The PIITSA project is a cooperation between Blekinge Institute of Technology BTH Saab AB SP Swedish National Testing and Research Institute and Swedish Road Administration region Stockholm The project is going on under three years and the goal is to define communication and decision functions which will make it easier for ITS applications Intelligent Transport Systems and Services that have the need of supplying personally information This project presents a solution to the question How do I get from point A to point B in any case AII that the user needs is a PDA with the application installed and being able to connect to the service via a mobile network If the user has specified a route in the application then the user will receive up to date information on how to get to his destination This information is presented on the user s PDA If something

Download Pdf Manuals

Related Search

Related Contents

SR204 MANUAL 20130906.cdr  none TK-1VTX3-34 Installation Guide    RC11xx-RC232  MANUEL D`UTILISATION LIT ALDRYS`EVOLUTION    Dolby LM100 Broadcast Loudness Meter User's Manual  HOW TO USE AES2007  Clone X 4 User Guide  

Copyright © All rights reserved. Failed to retrieve file