无线链路质量突变性感知的机会路由协议

摘要

The existing wireless link spatial correlation-based opportunistic routing metrics cannot perceive link burstihess.To address this problem,a burstiness-aware metric,called μETX,was proposed,and based on this,a new opportunistic routing algorithm(ORALB) was introduced for link correlated wireless network.ORALB sufficiently exploits wireless link correlation by choosing low correlated nodes as candidate forwarder set,meanwhile,it is a burstiness-aware opportunistic routing,which can avoid selecting wireless links with high-transmission cost.Simulation results show that,compared with other relevant routing protocols,ORALB performs more efficiently on decreasing average packets transmission cost and improving transmission reliability.%现有无线链路空间相关性感知的机会路由度量无法感知链路突变性.针对该问题,提出了能够同时感知无线链路空间相关性和突变性的机会路由测度μETX.在此基础之上,提出了基于μETX的机会路由算法ORALB.ORALB充分利用了无线链路空间的相关性,选择相关性较低的节点作为转发节点集;同时又能感知无线链路突变性,避免了选择传输开销较高的无线链路.仿真结果表明,与其他相关机会路由相比,ORALB可以有效减小数据包的传输开销,提高传输可靠性.