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一种基于链路带宽估计的无线TCP改进算法

A novel wireless TCP based on bandwidth estimation
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摘要 本文提出了一种能够通过带宽估计来判断无线链路报文段丢失原因,并采取相应拥塞控制机制的无线TCP算法-TCP_LD(TCP Loss Detection)。文章采用Padhye模型的建模方法,推导了TCP_LD的稳态流量模型。理论分析和仿真结果说明,TCP_LD能够有效的区分出发生报文段丢失的原因,即拥塞丢失或者链路突发差错,从而提高系统的流量。 In this paper, an improved wireless transport control protocol-TCP_LD （TCP Loss Detection） is proposed. Using bandwidth estimation, this scheme can distinguish the reason of packets error, hence adopt appropriate congestion control mechanism. Based on the TCP throughput model of Padhye, an analytical model of TCP_LD steady state throughput is deduced. The results show that TCP_LD is simple and effective for dealing with random packet loss, and can achieve significant throughput improvements.
作者 姚凌 吴甜 纪红 乐光新
机构地区 北京邮电大学
出处 《电路与系统学报》 CSCD 北大核心 2007年第3期136-139,135,共5页 Journal of Circuits and Systems
基金 国家自然科学基金(90104018 60172052 60002009)
关键词 TCP_LD TCP Reno拥塞控制 流量 TCP_LD TCP Reno congestion control throughput
分类号 TN915.03 [电子电信—通信与信息系统]
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参考文献11

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二级参考文献16

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共引文献9

电路与系统学报
2007年 第3期

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