TY - GEN
T1 - A TCP-physical cross-layer congestion control mechanism for the multirate WCDMA system using explicit rate change notification
AU - Wang, Li-Chun
AU - Lee, Ching Hao
PY - 2005/12/1
Y1 - 2005/12/1
N2 - In this paper, we propose an explicit rate change notification (ERCN) mechanism to improve the transmission control protocol (TCP) performance in the wideband code-division multiple-access (WCDMA) system. The base station in the WCDMA system dynamically adapts transmission data rates according to the wireless channel condition. Therefore, if the TCP sender can not be notified about the rate change in the wireless channel, congestion in the radio link between the base station and mobile terminal occurs quite often. In this work, we first derive the relation between the bandwidth in the physical layer and the maximum queue size in the TCP layer, and then obtain a closed-form expression for the average throughput in terms of average queue size, queue delay and channel capacity. We validate results by simulations. The analytical formula can facilitate the design of a cross-layer TCP-physical congestion control mechanism for the rate adaptive wireless system.
AB - In this paper, we propose an explicit rate change notification (ERCN) mechanism to improve the transmission control protocol (TCP) performance in the wideband code-division multiple-access (WCDMA) system. The base station in the WCDMA system dynamically adapts transmission data rates according to the wireless channel condition. Therefore, if the TCP sender can not be notified about the rate change in the wireless channel, congestion in the radio link between the base station and mobile terminal occurs quite often. In this work, we first derive the relation between the bandwidth in the physical layer and the maximum queue size in the TCP layer, and then obtain a closed-form expression for the average throughput in terms of average queue size, queue delay and channel capacity. We validate results by simulations. The analytical formula can facilitate the design of a cross-layer TCP-physical congestion control mechanism for the rate adaptive wireless system.
UR - http://www.scopus.com/inward/record.url?scp=33744457973&partnerID=8YFLogxK
U2 - 10.1109/AINA.2005.69
DO - 10.1109/AINA.2005.69
M3 - Conference contribution
AN - SCOPUS:33744457973
SN - 0769522491
SN - 9780769522494
T3 - Proceedings - International Conference on Advanced Information Networking and Applications, AINA
SP - 449
EP - 452
BT - Proceedings - 19th International Conference on Advanced Information Networking and Applications, AINA 2005
Y2 - 28 March 2005 through 30 March 2005
ER -