时延要求感知的空洞抑制WSNs路由的研究  

Research on Delay-Guaranteed-Based Suppressing Hole Routing Protocol in WSNs

作　　者：黄祎[1] HUANG Yi(College 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,重庆沙坪坝401331

出　　处：《传感技术学报》2018年第12期1919-1924,共6页Chinese Journal of Sensors and Actuators

基　　金：重庆市教委应用技术推广项目(TG1306001);校企共建ICT行业创新基地项目(031708)

摘　　要：满足数据传输时延要求是无线传感网络WSNs(Wireless Sensor Networks)的关键问题。为了解决此问题,研究人员提出基于不同服务质量Qo S(Quality of Service)的地理位置路由,但是这些路由并没有处理好路由空洞问题,也存在空洞边界拥塞问题,这些问题降低了数据包传递率。为此,提出基于时延要求的抑制路由空洞的WSNs地理位置路由DG-SHGR(DelayGuaranteed-based Suppressing Hole Geographic Routing)。DG-SHGR路由先检测路由空洞,然后给处于路由空洞周围的数据包定义雷区,使数据包的传输路径远离雷区。同时,依据数据包传输时延要求定义雷区尺寸,进而保证数据包的传输时延要求。实验数据表明,提出的DG-SHGR路由有效地提高了数据包传递率,并平衡负载。Guaranteeing timely delivery in Wireless Sensor Networks(WSNs)is a challenging problem.To overcome the problem,several quality of service(QoS)-based geographic routing protocols have been proposed.The existing protocols work well in networks without routing holes.However,with the occurrence of routing holes,they suffer from the so-called local minimum phenomenon and traffic congestion around the hole boundary.Therefore,Delay-Guaranteed-based Suppressing Hole Geographic Routing Protocol(DG-SHGR)is proposed in this paper.DG-SHGR firstly achieves early awareness of the existence of a hole between the current node and the destination.Specifically,for each packet,we define a forbidden area around the hole from which the packet is kept away.On the one hand,the size and position of the forbidden area are varied among different packets to balance the traffic over the network.On the other hand,the size of the forbidden area is adjusted in accordance with the end-to-end delay requirement to ensure that the packet will arrive at the destination in time.

关 键 词：无线传感网络 地理位置路由 传输时延 路由空洞 雷区 

分 类 号：TN929.5[电子电信—通信与信息系统]