适用于WSNs的拥塞自适应多径路由算法

Congestion adaptive multipath routing algorithm for WSNs

针对无线传感器网络(WSNs)数据汇聚特性易导致网络拥塞的问题,结合改进AOMDV协议的多径建立、选择机制的缺陷,提出一种拥塞自适应的多径路由算法。新协议首先引入相关因子模型建立相互干扰度最小的路径集;其次建立路径拥塞信息采集、更新机制,并利用HELLO消息传递。最终源节点通过实时感知路径拥塞信息,自适应选择低拥塞路径来避免拥塞。仿真结果表明:改进的协议显著提高了分组投递速率,降低了端对端时延。

Aiming at problem that wireless sensor networks （WSNs）data gathering features easy lead to network congestion, a congestion adaptive multipath routing algorithm is proposed, combined with improving defect of mechanism of multipath establish and selection of AOMDV. Firstly, relevant factor mode is introduced in the new agreement to build a path set with minimal mutual interference ; secondly, establish path congestion information collection, update mechanism, and use the HELLO message to transmit. Eventually source node adaptively selects the lower congestion path to avoid congestion by real-time sense path congestion information. Simulation results show that the improved protocol can effectively improve packet delivery and reduce end-to-end delay.