一种延长无线传感器网络生存时间的机会路由

An opportunistic routing for lifetime prolonging of WSNs

为了使无线传感器网络节点的能量均衡消耗,防止某些节点的能量过早耗尽,提出了一种延长网络生存时间的机会路由(PLOR)。针对机会路由的传输机制,根据节点的能量模型,综合考虑了节点的期望传输次数(ETX)和剩余能量(RE),提出了一种路由测度EC和基于它的候选转发节点集的选择策略。在候选转发节点的协调转发上,采用数据包序列表(PSL)的方式来增加传输协调的成功率。仿真实验表明:相比于ExOR,PLOR进一步提高了吞吐量,降低了能耗,尤其网络的生存时间有了明显的提高。

In order to balance energy consumption of wireless sensor networks node,to prevent premature energy depletion of some nodes,a network lifetime prolonging opportunity routing（PLOR） is introduced.Aiming at transmission mechanism of opportunistic routing,according to energy model of node,consider node ETX and residual energy（RE）,propose a routing metric EC and a selection strategy of candidate forward node set based on it.In coordination forwarding of candidate forward node,use method of data packet sequence list（PSL） to increase success rate of transmission coordination.Simulation experiments show that,compared with ExOR,PLOR further improve throughput and reduce energy consumption,especially significantly improve network lifetime.