Enhanced Wireless TCP for Satellite Networks

摘要：

Satellite link is generally featured by long propagation delay, large bandwidth-delay product (BDP) and high bit error rate (BER). This tends to make the conventional TCP suffer from performance degradation in satellite networks. Thus Forward Error Correction (FEC) scheme is suggested for error recovery over satellite channel and RFC 2488 suggests that TCP does not reduce its congestion window (cwnd) for corruption. However, FEC decoder directly discards any unrecovered corrupted packets at the output. This cannot let TCP to use some useful feedbacks from the lower layers for improving its performance. This paper proposes an enhanced congestion control scheme, together with a handshaking mechanism between FEC and TCP, to improve goodput performance of TCP over satellite links. Simulation results show that the proposed scheme could achieve a better goodput performance, compared to the combination of conventional FEC and the existing TCP.

关键词： satellite FEC TCP BER algorithm

作者: Lin Cui Seok J. Koh Xin Cui

作者单位: Department of Computer Science Kyungpook National University Daegu, Korea Business School Shandong University at Weihai Weihai, China

会议类型: 国际会议

会议名称: 第三届IEEE无线通讯、网络技术暨移动计算国际会议

会议地点: 上海

会议语种:英文

在线出版日期: 2007-09-21（万方平台首次上网日期，不代表论文的发表时间）