一种能量高效的无线传感器网络分簇路由协议

针对决定性簇头选择 (deterministic cluster-head selection，DCHS）协议簇头阈值函数的不足，提出一种能量高效分簇算法(energy efficient clustering，EEC)协议。分析了低功耗自适应集簇分层型（low-energy adaptive clustering hierarchy，LEACH）协议及其改进协议DCHS的设计缺陷，设计了一种新的簇头选举机制，在选举簇头时，不仅考虑节点剩余能量，而且能够保证网络中簇头节点的数量，并且用码分多址 (code division multiple access，CDMA)机制使非簇头入簇，减少了对相邻节点的干扰。仿真结果表明，与LEACH和DCHS协议相比，EEC协议能有效地延长网络生存时间，且网络能耗更加均衡。

An energy-efficient clustering routing protocol for wireless sensor networks

Aimed at the shortcomings of DCHS of cluster threshold function, the paper puts forward a sort of EEC protocol. The paper analyzes the design defect of the LEACH protocol and its improved protocol DCHS, and designs a new cluster head election mechanism. The nodes of remaining energy are not only considered, but also the cluster heads number is taken into account, and the normal nodes adopt CDMA mechanism to join the clusters which can reduce the interference with the nearby clusters. Simulation results show that compared with the LEACH protocol and DCHS, EEC protocol can effectively prolong the network''s lifetime and make the network energy consumption be more balanced.