IBM - ČVUT Student Research Projects Mobile Public Transportation Timetables Petr Podhorský Jakub Zahradník

IBM - ČVUT Student Research Projects 2 Goals Create mobile application for downloading timetables of public transportation for nearest stations Determine user location by GPS Provide map of nearby stations Supply simplified timetables to a user through mobile UI Reduce amount of transferred data Implement in Java

Location Location API (JSR-179) –Location API provides transparent location services, based on GPS, BTS triangulation etc. (depends on provider) –OS Windows Mobile doesn‘t support this package Direct connection to GPS module –Application can connect to any device supporting NMEA 0183 protocol –Internal GPS module, external module connected by Bluetooth IBM - ČVUT Student Research Projects 3

Timetables Timetables downloaded from HTML output parsed by application Information provided for tram stop(s) –Time of departure –Name –Next station name –End station name IBM - ČVUT Student Research Projects 4

Maps Maps downloaded from Google Maps Converted to PNG format User position and selected station marked IBM - ČVUT Student Research Projects 5

Architecture IBM - ČVUT Student Research Projects 6 Application consists of two separated components (both of them are implemented in Java) Instead of downloading all data directly from client (~200 KB and more), GPS coordinates are passed to the server, processed and only small amount of data (~2 KB) sent back – with information to display

Conclusion Easy to use application created Amount of transferred data significantly reduced Application tested in real environment -> video IBM - ČVUT Student Research Projects 7

Questions & Answers Thank you for your attention. IBM - ČVUT Student Research Projects 8