一种能量有效及负载均衡的Ad hoc路由协议

移动Ad hoc网络是能量受限系统,节点由电池供电,因此减少移动节点电池能量消耗,延长网络总的生存时间,已经成为评价路由协议性能的重要指标,但IETF的MANET小组提出的几种经典的路由协议,是最小跳数路由,没有考虑能量因素.针对这个问题,提出了Ad hoc网络中基于AODV能量有效、负载均衡的按需路由算法.新协议根据节点的剩余能量和节点当时的负荷情况,决定节点接入路由的延迟时间,从而使剩余能量较多和负载较轻的节点能够更快地接入路由,使网络中的能量消耗更公平,负载更均衡,使数据流不在某些路段上过于集中.仿真结果表明改进的协议和原协议相比,降低了端到端的延时,提高了网络吞吐率,延长了整个网络的生存时间,提高了整个网络的性能.

An energy efficient and load balanced Ad hoc routing protocol

The Ad hoc network is an energy-limited system with its nodes powered by batteries.The most important merit when evaluating a given protocol is its ability to decrease node energy consumption and prolong network service life.Typical routing protocols presented by the MANET group of IETF are based on least hops,without consideration of energy consumptions.To solve this problem,an improved routing protocol based on Ad-hoc on-demand distance vector(AODV) is presented for a mobile Ad hoc network.It is a protocol of energy efficient and load balanced,in which the jitter delay of a node is determined by its current energy level and load.Thereby,the nodes with more residual energy and less load can enter the route more quickly,energy consumption in the network can be fairer,and node loads can be more uniform,so that the data flow can not be clogged in some section.Simulation results showed that,compared with basic AODV protocol, the proposed protocol decreases end-to-end delay,improves the network throughput rate,prolong the service life of whole network and raises the network performance.