| 一种丢包区分方法及其在Linux下的实现 |
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| 引用本文： | 叶进,王建新,袁银行,张向利.一种丢包区分方法及其在Linux下的实现[J].计算机工程,2010,36(16):77-78. |
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| 作者姓名： | 叶进 王建新 袁银行 张向利 |
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| 作者单位： | 1. 桂林电子科技大学信息与通信学院,桂林,541004
2. 中南大学信息科学与工程学院,长沙,410083 |
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| 基金项目： | 国家自然科学基金资助项目，广西信息与通讯技术重点实验室基金资助项目 |
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| 摘 要： | 针对传统拥塞控制机制在无线链路丢包的情况下出现的盲目降低拥塞窗口、TCP吞吐量下降的问题，研究无线/有线混合环境下基于该机制的一种丢包区分方法——WECN，在Linux操作系统下进行实现。搭建混合网络实验床仿真WECN与TCP Reno, TCP Westwood 2种协议相结合的网络模型。测试结果表明，WECN能扩展到已有的TCP协议中，提高含无线链路网络中TCP的吞吐量。
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| 关 键 词： | 拥塞控制 显式拥塞通告 主动队列管理 随机早期检测 测试床 |
Loss Differential Method and Its Realization in Linux |
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| YE Jin,WANG Jian-xin,YUAN Yin-hang,ZHANG Xiang-li.Loss Differential Method and Its Realization in Linux[J].Computer Engineering,2010,36(16):77-78. |
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| Authors: | YE Jin WANG Jian-xin YUAN Yin-hang ZHANG Xiang-li |
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| Affiliation: | (1. College of Information and Communication, Guilin University of Electronic Technology, Guilin 541004; 2. College of Information Science and Engineering, Central South University, Changsha 410083) |
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| Abstract: | Traditional TCP variants use packet loss as the indicator of congestion and reduce its congestion windows size, which results in TCP throughput degrade. This paper studies how WECN solves this problem and enhances performance over wired/wireless hybrid networks. The contribution of this paper is implement of WECN in Linux operating system and emulation of its combination with TCP Reno, TCP Westwood in a testbed. Test results show that WECN can be extended to current TCP variants and can improve TCP throughput in lossy links. |
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| Keywords: | congestion control Explicit Congestion Notification(ECN) Active Queue Management(AQM) Random Early Detection(RED) testbed |
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