Mobile Technologies

7,412 views
7,228 views

Published on

A presentation on the latest mobile technologies

Published in: Technology, Business
2 Comments
8 Likes
Statistics
Notes
No Downloads
Views
Total views
7,412
On SlideShare
0
From Embeds
0
Number of Embeds
154
Actions
Shares
0
Downloads
1,344
Comments
2
Likes
8
Embeds 0
No embeds

No notes for slide

Mobile Technologies

  1. 1. Mobile Technologies <ul><li>Introduction </li></ul><ul><li>Basics of GSM </li></ul><ul><li>Value Added Services </li></ul><ul><li>SMS </li></ul><ul><li>Short Codes </li></ul><ul><li>Asterisk * </li></ul><ul><li>LBS </li></ul>
  2. 2. Basic Unit of GSM Networks
  3. 3. GSM Components <ul><li>MSC – Mobile Switching Center </li></ul><ul><li>BSC – Base Station Controller </li></ul><ul><li>BTS – Base Transceiver Station </li></ul><ul><li>VLR – Visitor Location Register </li></ul><ul><li>HLR – Home Location Register </li></ul><ul><li>LMU – Location measurement Unit </li></ul><ul><li>SMLC – Serving mobile location center </li></ul><ul><li>GMLC – Gateway mobile location center </li></ul>
  4. 4. GSM Architecture Base Station VLR MSC VLR MSC HLR land link land link Radio link
  5. 5. MSC – Mobile Switching Center <ul><li>Deliver Calls to Subscribers </li></ul><ul><li>Uses VLR data to route calls </li></ul><ul><li>Deliver SMS to handset from the SMSC </li></ul><ul><li>Handles BSC to BSC Handovers </li></ul><ul><li>Collect billing information </li></ul>
  6. 6. BSC – Base Station Controller <ul><li>Controls Many BTSs </li></ul><ul><li>Allocates radio channels </li></ul><ul><li>Handles BTS to BTS handovers </li></ul>
  7. 7. Basic Unit of GSM Networks
  8. 8. BTS – Base Transceiver Station <ul><li>Radio Base Station </li></ul><ul><li>Handles the Wireless communication </li></ul><ul><li>Transceiver </li></ul><ul><li>Power Amplifier </li></ul><ul><li>Antenna </li></ul>
  9. 9. BTS
  10. 10. BTS Sectors
  11. 11. Cell Management
  12. 12. HLR – Home Location Register <ul><li>Stores details of each SIM </li></ul><ul><li>GSM services accessible to a subscriber </li></ul><ul><li>Current roaming area </li></ul><ul><li>Retrieves information from BSC </li></ul><ul><li>Updates VLR </li></ul><ul><li>Acts as the middle man for SMS and calls </li></ul>
  13. 13. VLR – Visitor Location Register <ul><li>Local cache for HLR </li></ul><ul><li>Used to setup the call quickly </li></ul><ul><li>Directly connected to the MSC </li></ul><ul><li>Stores the MCC, MNC and cell ID </li></ul>
  14. 14. Call Establishment
  15. 15. GSM Network Elements
  16. 16. SS7
  17. 17. SMS – Different Types <ul><li>Point to Point </li></ul><ul><li>Broadcast </li></ul>
  18. 18. SMS – Different Types <ul><li>User Specific </li></ul><ul><li>ME Specific </li></ul><ul><li>SIM Specific </li></ul>
  19. 19. SMSC
  20. 20. Mobile Originated SMS
  21. 21. Mobile Terminated SMS
  22. 22. SMS
  23. 23. Short Codes <ul><li>Pull Service </li></ul><ul><li>Premium Billing </li></ul><ul><li>Connects all mobile users </li></ul><ul><li>Short Code Nation </li></ul>
  24. 24. Short Code Demo <ul><li>Send GO JACOB to 3636 </li></ul><ul><li>www.go3636.com </li></ul>
  25. 25. Short Code Architecture
  26. 26. Asterisk * <ul><li>Software PBX </li></ul><ul><li>Open Source </li></ul><ul><li>Written in C </li></ul><ul><li>APIs are available for integration </li></ul><ul><li>Supports many industry standards </li></ul>
  27. 27. What is a PBX
  28. 28. Asterisk at Work
  29. 29. Positioning Technologies <ul><li>Handset Based </li></ul><ul><li>Network Based </li></ul><ul><li>Hybrid </li></ul>
  30. 30. GPS <ul><li>Free To Use </li></ul><ul><li>24 Satellites in Orbit </li></ul><ul><li>Maintained by US Defense </li></ul><ul><li>NAVSTAR GPS </li></ul><ul><li>NAV igation S atellite T iming A nd R anging </li></ul><ul><li>Minimum 3 Satellites needed for Positioning </li></ul>
  31. 31. GPS Satellites in Orbit
  32. 32. School Mathematics
  33. 33. Time Difference of Arrival
  34. 34. A-GPS <ul><li>GPS + Network </li></ul><ul><li>Assistance Server </li></ul><ul><li>Useful Where 3 Satellites are not in Range </li></ul><ul><li>Speedy calculations </li></ul><ul><li>Future Mobiles will have GPS Receivers </li></ul>
  35. 35. LMU – Location Measurement Unit <ul><li>Monitors Signals from BTS </li></ul><ul><li>Monitors Satellite GPS Data </li></ul>
  36. 36. SMLC – Serving Mobile Location Center <ul><li>Coordinates the location calculation process </li></ul><ul><li>Does calculation based on known values </li></ul><ul><li>Converts the location information into Latitude and Longitude </li></ul>
  37. 37. GMLC – Gateway Mobile Location Center <ul><li>Provides External Access to Location Data </li></ul><ul><li>Queries the SMLC to get the location information </li></ul><ul><li>Authorization </li></ul><ul><li>Billing </li></ul>
  38. 38. GSM Architecture with LBS
  39. 39. Location Based Services. <ul><li>Emergency services (911, 100, 101 etc) </li></ul><ul><li>Traffic / Weather alerts </li></ul><ul><li>Location sensitive advertising </li></ul><ul><li>Destination maps </li></ul>

×