摘要: 针对无线网络中TCP友好速率控制(TFRC)协议无法准确判断分组丢弃原因而导致的效率低下问题,提出一种基于显式拥塞反馈的阶跃标记方法,设计新的无线流媒体传输协议。仿真实验表明,新协议能在无线信道下准确区分丢包原因,并提供准确的拥塞通告信息,在保证TCP友好性的同时提高吞吐率。
关键词:
TCP友好速率控制协议,
显式拥塞反馈,
无线接入网络
Abstract: TCP Friendly Rate Control(TFRC) protocol over wireless networks has poor performance because it can not judge the reason of packet loss exactly. To solve this problem, this paper proposes a step marking method based on Explicit Congestion Notification(ECN) and designs a new wireless stream media transformation protocol. Simulations show that, with appropriate loss differentiation and congestion notification, the new protocol achieves high throughput while keeps reasonable friendliness to TCP flows.
Key words:
TCP Friendly Rate Control(TFRC) protocol,
Explicit Congestion Notification(ECN),
wireless access network
中图分类号:
黄家玮, 王建新, 叶进. 基于ECN阶跃标记的TFRC改进协议[J]. 计算机工程, 2010, 36(15): 23-24,28.
HUANG Jia-Wei, WANG Jian-Xin, XIE Jin. Improved TFRC Protocol Based on ECN Step Marking[J]. Computer Engineering, 2010, 36(15): 23-24,28.