MANET中基于邻居节点的重传控制算法

针对移动Ad hoc网络传统重传机制存在的局限性,提出了一种新的重传控制算法(EX-TCGM),利用传输路径上的邻居节点传输丢失的数据包,使得路由上的任何节点都能够重传;并从理论上对该算法的有效性进行了分析。通过仿真,与按需距离矢量路由协议(AODV)、机会路由协议(ExOR)和基于分组移动的传输控制方法(TCGM)进行了性能对比和分析,EX-TCGM相对原协议在端到端平均时延和吞吐量上有所提高,数据包平均成功传输率相对其他协议显著增加。

Retransmission control algorithm based on neighbor nodes in mobile Ad hoc networks

For limitations of traditional retransmission mechanism in mobile Ad Hoc networks, this paper proposed a new retransmission control algorithm EX-TCGM. It could use any terminal along the whole transmission route, thus enabling autonomous and distributed retransmission from any point on the route, and analyzed the validity of the algorithm in theory. Through computer simulates, made a performance comparison and analysis among AODV, ExORextremely opportunistic routing and TCGMtransmission control method with group mobility. It proves that EX-TCGM relative to the original protocol in the average end-to-end delay and throughput has increased and the average successful packet transmission rate increases significantly relative to other protocols.