一种面向工业无线网络的能量感知型多径路由机制

摘要

Due to the stringent requirement of reliability,timing and energy-efficiency in industrial wireless networks,an energy-aware multi-path routing mechanism is proposed.Based on the link quality measured by the online link quality estimator,the wireless node transmission power is adjusted adaptively.The expected transmission count is introduced to replace the traditional hop count to improve the transmission reliability.The residual energy is taken into account to guarantee the energy consumption balance.Furthermore,to satisfy the different transmission requirements of real-time packets and non-real-time packets,different forwarding schemes are adopted in order to improve the transmission reliability and reduce energy consumption.The mechanism is realized based on OMNeT + + and Mobility Framework.Extensive simulation results demonstrate the feasibility and effectiveness of the proposed mechanism.%针对工业无线网络对数据传输的实时性、可靠性和节能性的需求,提出一种基于能量感知的多径路由机制.该机制实时在线测量链路质量,基于测量结果自适应调节节点发送功率.在此基础上,引入期望传输次数取代传统的实际跳数以提高传输可靠性,并根据节点剩余能量选择路由转发节点,以保证能量均衡消耗.针对实时与非实时报文的不同传输需求,分别设计了相应的转发策略,在提高传输可靠性的同时,有助于降低能耗.基于OMNeT++和Mobility Framework仿真实现了该机制并进行了性能分析,结果表明该机制是可行和有效的.