基于IEEE 802.11的Ad Hoc网络中的一种节能路由改进算法*

根据IEEE 802.11协议在链路层提供有限次数链路重传的特点，提出了一种在基于IEEE 802.11的移动Ad Hoc网络（MANET）中保证可靠通信的节能路由改进算法——ERRC（Energy-efficient Routing algorithm for Reliable Communication in IEEE 802.11-based MANET），它可以方便地应用于MANET中现有的反应式路由协议。ERRC分析并建立了适合于IEEE 802.11情况的重传模型和能耗模型，提供了在发送数据分组时的功率控制机制，在节点选路时综合考虑了分组错误概率、节点代价函数的影响。仿真结果表明，ERRC算法可以显著提高网络生存期，在节省能耗方面比没有考虑分组错误概率的节能路由算法更为精确。

Energy-efficient Routing for IEEE 802.11-based Mobile Ad Hoc Network

Since IEEE 802.11 protocol implements a limited number of retransmissions at link layer, an energy-efficient routing algorithm named ERRC is proposed for reliable communication in IEEE 802.11-based Mobile Ad Hoc networks (MANET). It can be easily applied to current MANET active routing protocols. ERRC proposes an energy consumption model based on IEEE 802.11 retransmissions and provides power control mechanism in data transmission. Packet error rate and node cost are considered during ERRC’s route selection. The simulation result shows that ERRC can significantly prolong the MANET’s lifetime and is more accurate than traditional energy efficient routing algorithms which do not consider packet error rate.