摘要
节能问题是WSN的研究热点之一,而路由协议对网络能耗有直接影响。在对已存在的分簇多跳路由协议进行分析的基础上,提出了一种考虑多种因素来均衡节点能耗的分簇多跳路由协议——EBCRP。EBCRP协议中,选择中继簇头时综合考虑了邻近簇头相对自身的距离和方向;加入经验因子使簇头概率随节点与Sink的距离成负指数变化;中继簇头进行一定时间的等待以便数据融合,等待时间与它到Sink的距离成反比;另外,还通过仿真确立了较优的轮转周期。仿真实验结果表明,EBCRP协议能够使WSN网络第一个节点的死亡时间明显延后,节点能耗更均衡,生命期更长。
Energy conservation is one of the research hotspots in WSN, while routing protocols have direct impact on energy consumption. On the basis of analyzing the existing clustering multi-hop routing protocols, a cluster-based routing protocol （EBCRP）that considers multiple factors to balance energy consumption is proposed. In EBCRP, relay cluster heads are selected by considering the distance and direction to itself, experience factor is multiplied to make that the probability being a cluster head changes with the distance from the node to the Sink by negative exponential function;relay cluster heads wait for a certain time to facilitate data fusion, which is inversely proportional to the distance from the Sink to itself; in addition, the rotation cycle is discussed by simulation, and an optimal cycle is determined. The simulation results show that EBCRP can enable WSN that the first node death postponed, more balanced energy consumption, longer lifetime.
出处
《传感技术学报》
CAS
CSCD
北大核心
2013年第3期396-401,共6页
Chinese Journal of Sensors and Actuators
基金
基于无线自组网的应急通信关键技术问题研究项目(61072043)
关键词
无线传感器网络
能耗均衡
分簇路由
距离和角度
轮转周期
wireless sensor networks
energy balance
clustered route
distance and direction
rotation cycle
作者简介
李建洲（1986-），男，解放军理工大学硕士研究生，主要研究方向为无线传感器网络，jianzhouli_nj@163．com；
王海涛（1976-），男，解放军理工大学副教授，硕士生导师，研究方向为无线自组织网、网络管理和QoS保障。
