1. Mobile Technologies Introduction Basics of GSM Value Added Services SMS Short Codes Asterisk * LBS

2. Basic Unit of GSM Networks

3. GSM Components MSC – Mobile Switching Center BSC – Base Station Controller BTS – Base Transceiver Station VLR – Visitor Location Register HLR – Home Location Register LMU – Location measurement Unit SMLC – Serving mobile location center GMLC – Gateway mobile location center

4. GSM Architecture Base Station VLR MSC VLR MSC HLR land link Radio link

5. MSC – Mobile Switching Center Deliver Calls to Subscribers Uses VLR data to route calls Deliver SMS to handset from the SMSC Handles BSC to BSC Handovers Collect billing information

6. BSC – Base Station Controller Controls Many BTSs Allocates radio channels Handles BTS to BTS handovers

7. Basic Unit of GSM Networks

8. BTS – Base Transceiver Station Radio Base Station Handles the Wireless communication Transceiver Power Amplifier Antenna

9. BTS

10. BTS Sectors

11. Cell Management

12. HLR – Home Location Register Stores details of each SIM GSM services accessible to a subscriber Current roaming area Retrieves information from BSC Updates VLR Acts as the middle man for SMS and calls

13. VLR – Visitor Location Register Local cache for HLR Used to setup the call quickly Directly connected to the MSC Stores the MCC, MNC and cell ID

14. Call Establishment

15. GSM Network Elements

16. SS7

17. SMS – Different Types Point to Point Broadcast

18. SMS – Different Types User Specific ME Specific SIM Specific

19. SMSC

20. Mobile Originated SMS

21. Mobile Terminated SMS

22. SMS

23. Short Codes Pull Service Premium Billing Connects all mobile users Short Code Nation

24. Short Code Demo Send GO JACOB to 3636 www.go3636.com

25. Short Code Architecture

26. Asterisk * Software PBX Open Source Written in C APIs are available for integration Supports many industry standards

27. What is a PBX

28. Asterisk at Work

29. Positioning Technologies Handset Based Network Based Hybrid

30. GPS Free To Use 24 Satellites in Orbit Maintained by US Defense NAVSTAR GPS NAVigation Satellite Timing And Ranging Minimum 3 Satellites needed for Positioning

31. GPS Satellites in Orbit

32. School Mathematics

33. Time Difference of Arrival

34. A-GPS GPS + Network Assistance Server Useful Where 3 Satellites are not in Range Speedy calculations Future Mobiles will have GPS Receivers

35. LMU – Location Measurement Unit Monitors Signals from BTS Monitors Satellite GPS Data

36. SMLC – Serving Mobile Location Center Coordinates the location calculation process Does calculation based on known values Converts the location information into Latitude and Longitude

37. GMLC – Gateway Mobile Location Center Provides External Access to Location Data Queries the SMLC to get the location information Authorization Billing

38. GSM Architecture with LBS

39. Location Based Services. Emergency services (911, 100, 101 etc) Traffic / Weather alerts Location sensitive advertising Destination maps