QoS自适应WSN路由协议研究

Research on QoS Adaptive WSN Routing Protocol

不同业务对无线传感器网络的服务质量(QoS)有不同的要求,针对尽力而为和实时业务的不同需求,结合定向扩散协议和分层路由协议的特点,提出一种支持区分服务的服务质量自适应无线传感器网络路由协议(ASRP)。该协议以不同路由度量值计算路由梯度,建立2种路由梯度表,供不同业务数据转发用。引入网关节点,连接2个簇首,同时支持单条路径和多条路径,并实现从簇首到sink节点的多跳转发。仿真实验结果表明,ASRP协议对2类数据业务提供了有保证的区分服务,可在全网范围内实现能量资源的有效利用。

There are different Quality of Service（QoS） requirements for Wireless Sensor Network（WSN） in different applications including guaranteed hard QoS,differentiated soft QoS and so on.Oriented best-effort and real-time applications,an adaptive sensor network routing protocol to support differentiated services,Adaptive Sensor network Routing Protocol（ASRP）,is presented,which synthesizes directed diffusion protocol and Low-Energy Adaptive Clustering Hierarchy（LEACH）,sets up two types of routing grade.ASRP makes use of different routing metrics and introduces gateway node to support both routing policies single-path and multi-path for best-effort and real-time applications respectively.The gateway nodes can link two cluster head nodes to implement multiple hops forwarding from one cluster head to sink,which has good scalability.Simulation result shows that ASRP can provide the different QoS for two type applications and improve power efficiency of the whole networks.