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DOI:
Journal of Software:2005.16(5):878-885

基于无线自组织网络的TCP Freeze-Probing改进协议
王波,范平志
(西南交通大学,移动通信研究所,四川,成都,610031)
TCP Freeze-Probing Enhancement for Mobile Ad Hoc Networks
WANG Bo,FAN Ping-Zhi
()
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Received:October 13, 2003    Revised:September 08, 2004
> 中文摘要: 传统的TCP协议在有线网络中能够良好地工作,但用于无线自组织网络时则性能有所下降.其原因在于,传统的TCP协议无法分辨网络丢包原因,如网络拥塞、链路断开、信道错误或者链路改变.为了提高TCP协议在无线自组织网络中的性能,提出了一种TCP协议的改进方案TCP Freeze-Probing.该方案是一种端到端方法,不需要网络中间节点的反馈合作同时,提出了一种基于TCP Freeze-Probing的吞吐量模型并利用仿真对模型进行了验证.分析和仿真结果表明,该方案能够有效地改进TCP在无线自组织网络的性能.
Abstract:Traditional Transmission Control Protocol (TCP) works well in wired network but suffers from performance degradation in mobile ad-hoc networks (MANET) due to the fact that it cannot distinguish packet losses due to congestion from packet losses due to link breakage, channel error and route changes. In this paper, an enhanced TCP, named TCP Freeze-Probing, is proposed to improve the TCP performance in mobile ad-hoc networks. TCP Freeze-Probing is an end-to-end approach that does not need the cooperation of the intermediate nodes in the network. Besides, a throughput model for TCP Freeze-Probing is given, which is validated through simulation. It is shown by analysis and simulation that the proposed approach can greatly improve the TCP performance in MANET.
keywords: TCP  MANET  freeze probing
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基金项目:Supported by the National Natural Science Foundation of China under Grant No.60272070 (国家自然科学基金); the University Doctorial Research Foundation, Ministry of Education of China under Grant No.20020613020 (高校博士点科研基金) Supported by the National Natural Science Foundation of China under Grant No.60272070 (国家自然科学基金); the University Doctorial Research Foundation, Ministry of Education of China under Grant No.20020613020 (高校博士点科研基金)
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王波,范平志.基于无线自组织网络的TCP Freeze-Probing改进协议.软件学报,2005,16(5):878-885

WANG Bo,FAN Ping-Zhi.TCP Freeze-Probing Enhancement for Mobile Ad Hoc Networks.Journal of Software,2005,16(5):878-885