智能电表网状网中的机会路由

摘要

为解决智能电表无线网状网中信号衰减、噪音和路径损耗导致链路高丢失率的问题，引入机会路由来保障数据传输的性能。根据智能电网的数据传输特性，提出尽快完成采集数据传输的机会路由问题并建模，求解模型得到最优的候选节点集。仿真结果表明，与基于期望传输次数、期望任意传输次数和多并发流的机会路由协议相比，该方法在最小流的完成时间上分别降低39％、30％和400％，汇聚延时分别降低21％、12％和36％。%The main challenges of wireless mesh network with automated metering infrastructure (AMI)are signal fading, noise,and path loss,leading to high packet loss.Opportunistic routing was introduced into AMI mesh network to ensure the transmission performance.According to the data character of smart grid,to finish the transmission of collected data as quickly as possible,an opportunistic routing problem in smart grid (ORSG)was proposed and formulated to solve the optimal candidate forwarder set.The simulation results show that the completion time of minimum flow of ORSG are 39%,30% and 400% lower than those of OR with expected transmission number (ETX),expected anycast transmission (EAX)metrics,and opportunistic routing for multi-flow (ORMf),respectively.The average delay of ORSG is 21%,12% and 36% lower than those of OR with ETX,EAX metrics and ORMf,respectively.