摘要
针对无线传感器网络中节点能量受限的特征,深入分析了经典的LEACH路由协议;针对其在能耗和适用规模方面存在的不足,提出了一种新型自定义的跨区多跳路由算法(LEACH-CS)。新算法引入了"区域"的概念,即某区域选举簇头失败时产生补充簇头,建立簇间路由时以跨区距离的约束来自定义合适的多跳路由方案。实验表明,与现有LEACH协议相比,新的协议明显提高了网络的生存时间,平衡了网络的节点能耗,均匀了死亡节点的分布,也扩大了协议适用的网络规模。
This paper,based on the existing LEACH routing algorithm,proposed a novel customizable zone-spanned multi-hop routing algorithm（LEACH-CS） for large-scale,energy limited wireless sensor networks.At first,we introduced the concept of ＂zone＂.On this basis,an additional cluster-head may be elected on demand during cluster-head selection process.The purpose is to optimize multi-hop routing with the constraint of multi-zone distance threshold.Our simulation experiment demonstrated that,compared with the existing LEACH protocol,the LEACH-CS could reduce the energy consumption of the cluster-heads significantly and extend the life-cycle of large-scale networks due to more uniformly distributed dead nodes.
出处
《计算机科学》
CSCD
北大核心
2011年第1期78-82,共5页
Computer Science
基金
国家自然科学基金项目(60673185)
教育部留学回国人员科研启动基金项目(教外司留[2007]1108号)
江苏省"青蓝工程"中青年学术带头人培养对象资助项目(苏教师[2007]2号)资助
