標題: A TCP-physical cross-layer congestion control mechanism for the multirate WCDMA system using explicit rate change notification
作者: Wang, LC
Lee, CH
電信工程研究所
Institute of Communications Engineering
公開日期: 2005
摘要: 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.
URI: http://hdl.handle.net/11536/17861
ISBN: 0-7695-2249-1
期刊: AINA 2005: 19th International Conference on Advanced Information Networking and Applications, Vol 2
起始頁: 449
結束頁: 452
顯示於類別:會議論文