Mobile Ad Hoc Networks Energy Routing Algorithm

Mobile ad hoc network, also named as self-organized networks, is a temporarily formed multi-hop wireless communication network without any infrastructure. The nodes in ad hoc network are battery-operated, so reducing energy consumption and extending network lifetime are very valuable to study on wireless ad hoc network, and the study of energy routing for ad hoc network becomes the hotspot of research.Firstly, characteristics and key technologies in mobile ad hoc network is analyzed, especially measure indexes for energy consumption in the network is stated. And by the measure indexes, the current energy routing for ad hoc network is classified, the analysis and comparison of the routings are given, and then the future development is prospected. Secondly, based on the model of node energy consumption, the paper proposed Power Cost Function (PCF) which can control dynamic energy optimization. At the same time, models for predicting the link lifetime and the path availability are proposed by considering the character of dynamic topologies and energy-constrained operations. Then, Originating from AODV, two new power-aware routings PA1-AODV and PA2-AODV based of the models are presented. The path availability prediction of PA1-AODV based on the link lifetime prediction, and that of PA2-A0DV based on the neighbor change ratio. Lastly, by the simulation in NS2, the average delay, efficiencies of the data forwarding, the routing overhead, throughput, the number of death nodes and lifetime of the network in different CBR, different nodes movement, different epoch and different network scale are analyzed. And the result shows that PA1-AODV and PA2-AODV can choose a steadiest path to transmit data, reduce the death nodes by avoiding the bottleneck-nodes and prolong the network lifetime.