无线传感器网络中时效性优化的GEAR路由协议  

A time-effect optimized GEAR protocol in wireless sensor network

作　　者：夏娜[1,2] 李敦[1] 唐媚[1] 钱浩伟[1] 徐普君[1] 

机构地区：[1]合肥工业大学计算机与信息学院,安徽合肥230009 [2]合肥工业大学安全关键工业测控技术教育部工程研究中心,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2010年第4期519-523,共5页Journal of Hefei University of Technology：Natural Science

基　　金：国家教育部博士点新教师基金资助项目(20070359029);安徽省自然科学基金资助项目(070412035)

摘　　要：在无线传感器网络中,数据路由是各种应用的基础,基于能量感知的地理路由协议(GEAR)虽然可以在一定程度上均衡节点间的能量负载,但不适用于节点初始能量不同的异构网络,而且其折线效应会显著增加数据路由的延时。文章提出一种改进型GEAR路由协议,基于节点的剩余能量进行路由选择,同时对代价函数引入自适应调整策略,从而使协议同时适用于同构和异构网络,消除折线效应,提高数据路由的时效性,仿真结果证明了协议的有效性。In the wireless sensor network（WSN）, data routing is the basis of various applications. Although the geographical and energy aware routing（GEAR） protocol can balance the energy load of nodes to some extent, it is not suitable for the heterogeneous networks composed of nodes with different initial energy. Furthermore, its ＂folded line＂ effect increases the time delay of data routing remarkably. In this paper, an improved GEAR protocol is presented. It selects the routing node according to its residual energy, and a self-adaptive adjustment strategy is introduced to the cost function. So the protocol can work well both in homogeneous and heterogeneous networks without the ＂folded line＂ effect, and the time-effect of data routing can also be improved. The simulation experiment proves the efficiency of the protocol.

关 键 词：无线传感器网络 路由协议 地理和能量感知路由 代价 时效性 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]