[1]左朝树,雷仕英,李云.机会网络中一种提高TCP性能的跨层改进算法[J].智能系统学报,2011,6(02):152-159.
 ZUO Chaoshu,LEI Shiying,LI Yun.A crosslayer design for improving TCP performance in opportunistic network[J].CAAI Transactions on Intelligent Systems,2011,6(02):152-159.
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机会网络中一种提高TCP性能的跨层改进算法(/HTML)
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《智能系统学报》[ISSN:1673-4785/CN:23-1538/TP]

卷:
第6卷
期数:
2011年02期
页码:
152-159
栏目:
出版日期:
2011-04-25

文章信息/Info

Title:
A crosslayer design for improving TCP performance in opportunistic network
文章编号:
1673-4785(2011)02-0152-08
作者:
左朝树1雷仕英2李云2
1.保密通信重点实验室,四川 成都 610041;
 2. 重庆邮电大学 无线信息网络研究中心,重庆 400065
Author(s):
ZUO Chaoshu1 LEI Shiying2 LI Yun2
1.Science and Technology on Communication Security Laboratory, Chengdu 610041, China;
2.CWIN, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
关键词:
机会网络TCP/Reno传染路由协议 ACKEPI
Keywords:
opportunistic networks TCP/Reno epidemic routing ACKEPI
分类号:
TP393
文献标志码:
A
摘要:
针对机会网络中TCP与传染路由结合时,传染路由的“洪泛”特性和机会网络的间断特性会使得TCP性能变差的问题,提出了一种基于传染路由协议和TCP/Reno协议的跨层改进算法——ACKEPI.该算法对连接开始阶段的慢开始门限值进行修改,以避免因网络错误进入拥塞避免阶段而导致拥塞窗口增长速度过于缓慢.同时,为了避免网络中已经成功交付但仍存储在网络中其他节点的数据包的复本继续在网络中存在并扩散,造成网络资源浪费,算法还利用ACK作为到达通告来删除这些冗余数据包.通过深入的仿真分析和比较,结果表明ACKEPI算法能明显改善TCP性能.
Abstract:
In opportunistic networks, the infectivity of epidemic routing and intermittent connectivity of network would degrade the performance of TCP when TCP works with epidemic routing. In order to improve the performance of TCP in opportunistic networks, a crosslayer design, named ACKEPI, which is based on epidemic routing and TCP/Reno, is proposed. The algorithm renews the threshold of slowstar at the beginning of TCP connection to prevent the network from incorrectly turning into congestion avoidance phase so that the network can keep the regular increment speed of congestion window. At the same time, to avoid the packets that have already been delivered being forwarded again in the network, the design makes use of ACK to delete the redundant packets. The stimulation results show that the proposed algorithm can ultimately increase TCP performance in opportunistic networks. 

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备注/Memo

备注/Memo:
收稿日期:2010-09-15.
基金项目:国家自然科学基金资助项目(61071118,60702055);重庆市杰出青年科学基金资助项目(CSTC2010BA4010);重庆市科委自然科学基金资助项目(CSTC2009BB2279).
通信作者:左朝树.
E-mail:cs_zuo@163.com.
作者简介:
左朝树,男,1972年生,高级工程师,硕士生导师,博士, 主要研究方向为通信网络及信息安全,发表学术论文20余篇,其中被EI检索10余篇. 雷仕英,女,1985年生,硕士研究生,主要研究方向为宽带无线接入网技术.
 李云,男,1974年生,教授,博士生导师,主要研究方向为无线移动通信,发表学术论文150余篇,其中被SCI、EI检索80余篇.
更新日期/Last Update: 2011-05-19