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achoudhary87

The empirical study on the
performance of 3G network

Project Guide : Dr. Huzur Saran

By: Ankit Bhadu

 Why do measurements ?
 What to measure ?
 How to measure ?
 References

 Bandwidth related metrics:
• Bulk Transfer Capacity (TCP throughput)
• Available Bandwidth
• Link Capacity
• Error Rate.
 From Where to Measure:
• From End Host to Server .
• From End Host to Gateway.(GGSN).

 Measurement Models Discussed in the
literature can be classified as
• Available Bandwidth
 Probe gap model.(PGM)
 e.g. IGI, Spruce, Delphi.
 Probe rate model.(PRM)
 e.g. pathchrip, BART, TOPP, PTR.
• Link Capacity
 e.g. Aymprobe, Capprobe
• Packet loss Rate.
 e.g. ping.

E2E Uplink E2E Downlink E2 Gateway

TCP throughput Iperf Iperf

Available B/w PathChirp/BART PathChirp/BART PathChirp/BART
/Spruce /Spruce /Spruce

Capacity AsymProbe AsymProbe AsymProbe

Error Rate Ping method Ping method Ping method
from Server to
End host

 W. L. Tan, F. Lam and W. C. Lau, “An Empirical Study on the Capacity and Performance
of 3G Networks,” In IEEE Transactions on Mobile Computing, vol 7, no 6, June 2008.
 Zhou, A., Liu, M., Song, Y., Li, Z., Deng, H., & Yuanchen, M. (2008). A new
method for end-to-end available bandwidth estimation. Paper presented at
the GLOBECOM - IEEE Global Telecommunications Conference, 1519-1523
 Bergfeldt, E., Ekelin, S., & Karlsson, J. M. (2009). A performance study of
bandwidth measurement tools over mobile connections. Paper presented at
the IEEE Vehicular Technology Conference
 Castellanos, C. Ú, Villa, D. L., Teyeb, O. M., Ellingt, J., & Wigard, J. (2006).
Comparison of available bandwidth estimation techniques in packet-switched
mobile networks. Paper presented at the IEEE International Symposium on
Personal, Indoor and Mobile Radio Communications, PIMRC
 Yao, J., Kanhere, S. S., & Hassan, M. (2008). An empirical study of bandwidth
predictability in mobile computing. Paper presented at the Proceedings of the
Annual International Conference on Mobile Computing and Networking,
MOBICOM, 11-18.

Objectives:
- understand availability & performance of
existing 3G infrastructure/network in Delhi.

-compare advertised and actual data rates
of various companies.

- study the implication of existing network on
higher layer protocols.

Various service provider offered
Bandwidth
S no Service provider technology Speed up to
1 Reliance HSPA/HSPA+ 21.6 Mbps

2 BSNL HSPA 3.6 Mbps
EV-DO 2.4 Mbps
3 Idea HSPA/HSPA+ 14 Mbps
4 DOCOMO HSPA/HSPA+ 21.1 Mbps
5 MTNL HSPA+ 7.2 Mbps
6 Airtel HSPA/HSPA+ 7.2 Mbps
7 MTS EV-DO 3.1 Mbps

Tasks Accomplished
• Study of GPRS/EDGE
• Architecture of GPRS and New interface on GSM
• Working of GPRS in PS (Packet Switching) Network
• Comparison with EDGE Technology
• Study of HSPA (HSDPA/HSUPA)
• Release 4
• Release 5 (HSDPA)
• Release 6 (HSUPA)

 Curl Test Result

Airtel 3G (Kbps) Mts (Kbps)
Downloading Downloading

432.2 567.4

612 732

742 639.8

866 511.1

Avg(663.21) Avg (612.8)

Shown the graph from both side (server side and client side)
Analysis:
• Gap shows the packet loss.
• It use the slow start phase.

Analysis
• More no of retransmission
• Small window size with compare to Airtel 3G

Prospective tasks:
• Study of HSPA+ (Release 7 and more)

• Understand the simulation of the MAC
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Presentation1

1. The empirical study on the performance of 3G network

2. Project Guide : Dr. Huzur Saran By: Ankit Bhadu

3.  Why do measurements ?  What to measure ?  How to measure ?  References

4.  Bandwidth related metrics: • Bulk Transfer Capacity (TCP throughput) • Available Bandwidth • Link Capacity • Error Rate.  From Where to Measure: • From End Host to Server . • From End Host to Gateway.(GGSN).

5.  Measurement Models Discussed in the literature can be classified as • Available Bandwidth  Probe gap model.(PGM)  e.g. IGI, Spruce, Delphi.  Probe rate model.(PRM)  e.g. pathchrip, BART, TOPP, PTR. • Link Capacity  e.g. Aymprobe, Capprobe • Packet loss Rate.  e.g. ping.

6. E2E Uplink E2E Downlink E2 Gateway TCP throughput Iperf Iperf Available B/w PathChirp/BART PathChirp/BART PathChirp/BART /Spruce /Spruce /Spruce Capacity AsymProbe AsymProbe AsymProbe Error Rate Ping method Ping method Ping method from Server to End host

7.  W. L. Tan, F. Lam and W. C. Lau, “An Empirical Study on the Capacity and Performance of 3G Networks,” In IEEE Transactions on Mobile Computing, vol 7, no 6, June 2008.  Zhou, A., Liu, M., Song, Y., Li, Z., Deng, H., & Yuanchen, M. (2008). A new method for end-to-end available bandwidth estimation. Paper presented at the GLOBECOM - IEEE Global Telecommunications Conference, 1519-1523  Bergfeldt, E., Ekelin, S., & Karlsson, J. M. (2009). A performance study of bandwidth measurement tools over mobile connections. Paper presented at the IEEE Vehicular Technology Conference  Castellanos, C. Ú, Villa, D. L., Teyeb, O. M., Ellingt, J., & Wigard, J. (2006). Comparison of available bandwidth estimation techniques in packet-switched mobile networks. Paper presented at the IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC  Yao, J., Kanhere, S. S., & Hassan, M. (2008). An empirical study of bandwidth predictability in mobile computing. Paper presented at the Proceedings of the Annual International Conference on Mobile Computing and Networking, MOBICOM, 11-18.

8. Objectives: - understand availability & performance of existing 3G infrastructure/network in Delhi. -compare advertised and actual data rates of various companies. - study the implication of existing network on higher layer protocols.

9. Various service provider offered Bandwidth S no Service provider technology Speed up to 1 Reliance HSPA/HSPA+ 21.6 Mbps 2 BSNL HSPA 3.6 Mbps EV-DO 2.4 Mbps 3 Idea HSPA/HSPA+ 14 Mbps 4 DOCOMO HSPA/HSPA+ 21.1 Mbps 5 MTNL HSPA+ 7.2 Mbps 6 Airtel HSPA/HSPA+ 7.2 Mbps 7 MTS EV-DO 3.1 Mbps

10. Tasks Accomplished • Study of GPRS/EDGE • Architecture of GPRS and New interface on GSM • Working of GPRS in PS (Packet Switching) Network • Comparison with EDGE Technology • Study of HSPA (HSDPA/HSUPA) • Release 4 • Release 5 (HSDPA) • Release 6 (HSUPA)

11. Architecture Network Diagram

12.  Curl Test Result Airtel 3G (Kbps) Mts (Kbps) Downloading Downloading 432.2 567.4 612 732 742 639.8 866 511.1 Avg(663.21) Avg (612.8)

13. Shown the graph from both side (server side and client side) Analysis: • Gap shows the packet loss. • It use the slow start phase.

14. Analysis • More no of retransmission • Small window size with compare to Airtel 3G

15.

16. Prospective tasks: • Study of HSPA+ (Release 7 and more) • Understand the simulation of the MAC layer functioning in HSPA/HSPA+ • Bandwidth Comparison of 3G Providers

17. Thanks

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