延长网络生存时间的AODV路由改进算法

An Improved AODV for Lengthen Network Lifetime

AODV(Ad Hoc on-demand distance vector)路由协议是Ad Hoc网络中一种具有代表性的按需路由协议。传统的AODV是以“最小跳数”为参数建立和更新路由的。随着网络负荷的增加,以这种方式建立和更新路由容易引起网络中部分节点较其它节点更多地参与通信,在这些节点发生拥塞的可能性将更大,频率将更高,这会增加网络能耗,缩短网络生存时间。针对这一问题,笔者提出了通过控制拥塞对AODV进行节能改进的一种算法—Lengthen Lifetime AODV(LLAODV)。

The AODV（Ad Hoc on-demand distance vector） routing protocol is a typical on-demand routing protocol, and a ＂minimum hops＂ algorithm is traditionally applied to establish and maintain routes. With the increase of offered load, using AODV to establish and maintain routes would arouse some nodes to participate in more communications, and congestions would happen more probably and frequently in these nodes, that would cause energy consumption to increase and network lifetime to reduce rapidly. This paper proposes a mechanism based on congestion control for improving AODV-lengthen lifetime AODV（LLAODV）.