【作者】 杨振； 罗喜伶； 张学军；

【Author】 YANG Zhen~1,LUO Xi-ling~2,ZHANG Xue-jun~3 Electronic and Information Engineering School of Beihang University,Beijing 100191,China

【机构】 北京航空航天大学电子信息工程学院；

【摘要】 本文提出一种对早期丢包检测算法(TCP-EPLN)的改进方案。该方案根据路由中断处数据包的抢救情况,利用DSR协议的Route Error信息,对途经节点上中断TCP所属数据包进行标记或丢弃,以减少路由中断处节点所发Route Error的数量,缩短发送端TCP对数据包丢失的检测时间,从而提高高动态环境Ad Hoc网络TCP传输性能。仿真结果表明,该方案有效地提高了TCP-EPLN的传输性能,减少了TCP慢启动次数。更多还原

【Abstract】 This paper advances a novel proposal based on the Early Packet Loss Notification(EPLN)algorithm.Depending on the re- sult of packet salvaging occurred at the link breakage,the proposal utilizes Route Error of DSR protocol to mark or discard packets of the interrupted TCP connection along the passing route.Through this mechanism,the numher of Route Error sent by the node de- tecting the link breakage can he reduced largely and the lime used to judge packet dro Pis also decreased,which both improve perfor- mance of TCP in high mobility ad hoc network.Finally,simulation shows that this proposal evidently improves performance of TCP -EPLN in transmission and slow-start aspects.更多还原