基于链路质量的无线传感网络路由  

Link Quality-Based Routing in Wireless Sensor Networks

作　　者：林勇[1] LIN Yong(Department of Communication,Chongqing College of Electronic Engineering,Chongqing 401331,China)

机构地区：[1]重庆电子工程职业学院通信工程学院

出　　处：《传感技术学报》2019年第8期1266-1270,共5页Chinese Journal of Sensors and Actuators

摘　　要：无线传感网络WSNs(Wireless Sensor Networks)广泛应用于数据收集领域。在这领域中,所收集的数据均需传输至信宿。当遭遇到高流量负载时,就可能会在信宿附近区域出现队列溢出。而有限的存储容量加剧了队列溢出问题。为此,提出基于队列时延和链路质量的WSNs路由QDLQR(Queue Delay and Link Quality-based Routing)。QDLQR协议公平地分布流量负载,进而避免拥塞。QDLQR协议利用数据包队列时延和期望传输次数ETX(Expected Transmission Count)建立混合路由指标,再通过此指标构建通往信宿的路由。相比于典型路由协议(RPL和HopCount),提出的QDLQR协议提高了数据包传递率,并缓解了队列溢出问题。The popularity of Wireless Sensor Networks(WSNs)is increasing and they are used in different application domains including data collection.In data collection application,all collected data are destined to Sink.In case of high traffic load,this scenario causes queue overflow mainly in nodes located near the Sink.Then Sensor nodes are known for their limited storage capacities which makes the packet queue overflow even more critical.Therefore,Queue Delay and Link Quality-based Routing(QDLQR)protocol is proposed in this paper.It fairly distributes traffic load to avoid congestion.QDLQR relies on both packet queueing delay and Expected Transmission Count(ETX)to build a routing metric used to construct routes from each node towards the Sink.Simulation results show,compared with standard routing protocol such as RPL and HopCount,QDLQR protocol improves the packet deliver ratio,reduce much less queue overflow.

关 键 词：无线传感网络 路由 队列溢出 队列时延 期望传输次数 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]