Hub：一种无线传感器网络分级能耗平衡方案  

Hub:new method of hierarchical energy consumption balance for wireless sensor networks

作　　者：杨海波[1] 唐颖[1] 姚庆栋[2] 

机构地区：[1]浙江树人大学信息科技学院,浙江杭州310015 [2]浙江大学信息与电子工程学系,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2008年第3期437-443,共7页Journal of Zhejiang University：Engineering Science

基　　金：浙江省自然科学基金资助项目(Y105346)

摘　　要：针对现有无线传感器网络能耗平衡技术主要侧重于局部负荷分担的问题,提出了一种新的能耗平衡方案.应用感知相关原理和信息梯度的概念实现聚类,并建立类内传输路径;采用逐跳转发和直接转发相结合的混合传输模式,降低同一类内传输路径上不同节点间的能耗不平衡,通过相邻路径间的数据转发,降低类内路径间能耗差异;通过在多条路径中选择高残余能量路径实现类间能耗平衡.仿真结果表明,采用本方案能够有效降低无线传感器网络全网的能耗差异,延长网络寿命;同时本方案对由于不同事件源的活动性差异引入的网络负荷不均衡性具有较强的平抑作用.Unlike the methods adopted in present wireless sensor networks which mainly focused on local load share, a new method for energy consumption balance was proposed. This method firstly applies the principle of sense correlation and the concept of information gradient to realize clustering and to establish paths in the clusters; then minimizes the energy consumption imbalance among different nodes in the path through a mixed transmission mode resulting from hop by hop forwarding combined with direct forwarding, and reduces the energy consumption difference among paths in the clusters through data forwarding among adjacent paths; finally realizes the inter-cluster energy consumption balance by choosing a high residual energy path from multiple ones. Simulation shows that this method can effectively reduce the energy consumption difference among the nodes in wireless sensor networks and thus prolong the network longevity meanwhile alleviate the load imbalance resulting from the activity difference among event sources.

关 键 词：感知相关 聚类 最佳路径 能耗平衡 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]