1. COE 543 Wireless Networks Term Project GPRS Capacity Evaluation Presented By Yaser Al-Jarbou May 2004

2. GPRS Capacity Evaluation Agenda Introduction GSM/GPRS Technology Simulation Model Results Discussion Reference Paper Conclusion

3. May 2004 GPRS Capacity Evaluation GPRS GPRS: General Packet Radio Service GPRS is a service that provides packet mode transmission within the GSM network & interconnects with external packet data networks.

4. May 2004 GPRS Capacity Evaluation What is GPRS? 2.5 G GPRS is an overlay network over the GSM Very Little change to GSM infrastructure Provides Data Packet delivery service Standardized by ETSI Direct support for Data Network

5. May 2004 GPRS Capacity Evaluation Applications Web browsing Email Banking Transactions Stock Market Updates News Weather & Traffic reports

6. May 2004 GPRS Capacity Evaluation Features High Data Rates of about 100 kbps – an order of magnitude higher than GSM The setup time is negligible – less than a second Resource utilization as per requirements – air interface is assigned temporarily on per-packet basis Hosts can remain “always on”

7. May 2004 GPRS Capacity Evaluation GSM Architecture

8. May 2004 GPRS Capacity Evaluation GPRS Additions

9. May 2004 GPRS Capacity Evaluation GPRS Additions (Cont.) SGSN – Serving GPRS support Node. –Performs packet routing & transfer –Mobility management – attach/detach & location management –Logical Link Management –AAA –Stores user Profiles of all MS within its purview

10. May 2004 GPRS Capacity Evaluation GPRS Additions (Cont.) GGSN – Gateway GPRS support Node –Interface between GPRS backbone & External packet data networks –Converts GPRS packets into appropriate Packet Data Protocol & vice- versa –It may also perform AAA Many-2-Many relationship may exist between SGSN & GGSN

11. May 2004 GPRS Capacity Evaluation Mobile Classes Three types of Mobile Classes CLASS A: « Rolls Royce » CLASS B: « Standard » CLASS C: « Cheap » CS Core Network (GSM) PS Core Network (GPRS) Simultaneous CS/PS Paging Simultaneous CS/PS data transfer CS Core Network (GSM) PS Core Network (GPRS) Simultaneous CS/PS Paging CS call or PS data transfer CS Core Network (GSM) PS Core Network (GPRS) CS mode (GSM only) or PS mode (GPRS only)

12. May 2004 GPRS Capacity Evaluation Project Title GPRS Capacity Evaluation Goal: Simulate the capacity needed for GPRS in coexistence with the circuit switched services. Reference Paper: –Peter Stuckmann, Frank Muller, “GPRS Radio Network Capacity and Quality of Service using Fixed and On-Demand Channel Allocation Techniques”, IEEE 2000. Tool: Microsoft.NET C#

13. May 2004 GPRS Capacity Evaluation Carrier 1 Carrier 2 Carrier 124............ CS Slot Dynamic Slot PDCH Fixed Slot PDCH

14. May 2004 GPRS Capacity Evaluation Simulation Model

15. May 2004 GPRS Capacity Evaluation Results Discussion

16. May 2004 GPRS Capacity Evaluation Results (Cont.)

17. May 2004 GPRS Capacity Evaluation Results (Cont.)

18. May 2004 GPRS Capacity Evaluation Conclusion GSM/GPRS Technology Simulation Model Results Discussion