一种分布式能量高效的WSNs非均匀分簇路由协议

针对无线传感器网络(WSNs)多跳通信方式中存在的"热区"问题,提出了一种分布式的、能量高效的非均匀分簇(DEEUC)路由协议。该协议将节点的剩余能量作为簇首选择的一个重要指标,候选簇首由上轮簇首根据簇内成员节点的剩余能量指定,候选簇首能否最终成簇首也是其能量竞争的结果。在DEEUC协议中,簇首以多跳的方式与基站进行通信并选择正向单位能耗最小的邻居簇首作为路由节点以节约能耗。仿真实验表明:DEEUC能较好地提高网络能效,延长网络生存时间。

A distributed energy-efficient unequal clustering routing protocol for WSNs

A distributed energy-efficient unequal clustering（ DEEUC） routing protocol is proposed,aiming at the ‘hot spot＇problem which caused by multi-hop transmission mode in wireless sensor networks（ WSNs）.In this protocol,the residual energy of node is regarded as an important index for cluster-head choosing,the candidate cluster-head is determined by the last round of cluster-head according to residual energy of cluster member nodes, and whether the candidate cluster-head will finally become cluster-head is the result of competition.In DEEUC protocol,cluster-head adopts multi-hop mode to communicate with base station,and chooses the neighbor cluster head which takes the minimum unit energy consumption of forward direction as its router node to save energy consumption.Simulation experiment demonstrates that DEEUC can efficiently improve energy-efficiency and prolong the network lifetime.