摘要
针对LEACH协议存在的3大问题簇头选举时未考虑节点剩余能量、频繁成簇造成了大量额外能耗以及欠缺对簇间能耗均衡的考虑,提出了能量有效分簇路由协议(LEACH-improved)。该协议中,首轮成簇后网络中簇的分布和数量将保持不变,以后每轮各簇的簇头由上一轮簇头结合节点的能量水平来指定,借鉴泛洪算法的思想,在簇间建立多跳路径,使簇头之间通过多跳通信的方式将数据传输至sink。用TOSSIM对新协议进行了仿真实验,结果显示相比LEACH协议,新协议有效地延长了网络的生命周期。
As LEACH has the problems of not considering the nodes＇ residual energy in cluster elections,frequent cluster reconstructions bringing about too much extra energy costs,and not taking into consideration the cluster-level energy consumpution balancing,an energy efficient clustering routing protocol（LEACH-improved） was proposed.In this protocol,after the first round cluster formation,the distribution and the number of clusters in wireless sensor networks remained the same.From the second round,the cluster head in each cluster was designated by the cluster head of the last round combining with the nodes＇ energy condition.Referring to the flooding algorithm,muli-hop paths between cluster heads were built to ensure that all cluster heads could transmit their data to sink via multi-hop communication.The new protocol was simulated in TOSSIM.The simulation results demonstrates that comparing with LEACH protocol,it achives an ovbious improvement on the network lifetime.
出处
《电子测试》
2011年第4期86-90,共5页
Electronic Test
关键词
无线传感器网络
剩余能量
簇间能耗均衡
TOSSIM
Wireless Sensor Networks（WSN）
residual energy
cluster-level energy consumption balancing
