WSN中基于链路质量和节点能量的AODV路由算法研究

为了满足无线传感网络能量的高效使用以及数据传输的稳定性的要求，需要对无线传感网络路由层协议进行改进。本文提出一种基于节点之间链路质量和节点能量状态的LE-AODV路由协议，LE-AODV路由协议采用跨层设计，路由发现过程中通过MAC层和物理层获取链路质量信息和节点能量信息来选取最优路径，并通过节点能量状态更新机制避免网络中热点的产生。本文使用Castalia仿真器对LE-AODV路由协议进行仿真，仿真结果表明，LE-AODV路由协议可以有效的提高分组投递率和网络生存时间。

The research of AODV routingprotocol based on link quality and node energy in WSN

In order to meet the demands of energy efficiency use and data transmission stability,the routing protocol of the wireless sensor network needs to be further improved. This paper proposes a LE-AODV routing protocol based on the link quality and energy status of node. The LE-AODV routing protocol adopts the cross-layer design. During the route discovery process,optimal path is selected by acquiring the link quality information and the node energy information from MAC layer and physical layer. Meanwhile,hot spots in the network will be avoided by the node energy status updating mechanism. In this paper,the Castalia simulator is applied to accomplish the simula?tion of the LE-AODV routing protocol. The research result shows that the LE-AODV routing protocol can effectively improve the packet delivery rate and prolong the network lifetime.