一种新的基于动态最优簇数目的WSN分簇协议

针对低功耗自适应分簇(LEACH)协议不足，提出一种新的分簇协议，称为动态最优簇数目(DONC)分簇协议。在分簇阶段，它能够根据网络中剩余节点个数来确定最优簇数目而不是固定值，并在簇首选择中充分考虑节点能量和地理位置因素；在传输阶段，采用改进的簇首链式转发。仿真表明，协议能保证簇数目始终保持最优状态，并且簇首在网络中均匀分布，有效延长网络的生存期。

Novel clustering protocol based on dynamic optimal number of clusters for wireless sensor network

To improve the performance of Low Energy Adaptive Clustering Hierarchy (LEACH), a novel clustering protocol called Dynamic Optimal Number of Clusters (DONC) was proposed. In the set-up phase, it can determine the optimal number of clusters according to the remaining number of nodes rather than a fixed number. Furthermore, the remaining energy and the geographical position of nodes were fully considered in cluster-head selection; in the steady-state phase, a modified multi-hop algorithm between cluster-heads was adopted. Simulation shows that the new protocol can guarantee the number of clusters is always in optimal state, and ensure the cluster-heads distributed evenly in the network and effectively prolong the system lifetime.