基于剩余能量和睡眠控制的改进LEACH算法

无线传感器网络（WSN）路由协议研究的一个重要的目标是如何在有限的能源下降低整个网络的能耗，提高网络的生存时间。以分簇路由协议LEACH为研究基础，提出了一种改进算法。该算法改进了簇首选择规则，引入协调件协议算法，通过在成簇阶段降低剩余能量低的节点被选择成为簇首的概率，在稳定运行阶段使簇首节点尽可能多的保持睡眠状态，从而降低了网络能耗。仿真结果表明，与原LEACH算法相比，改进的算法能够明显地延长网络生存时间。

Improvement of LEACH algorithm based on residual energy and node sleep schedule

The most important goal for routing protocol research on wireless sensor networks is to reduce the energy con- sumption and prolong the lifetime of the network. Based on the cluster-based routing protocol LEACH, a new improved algo- rithm is put forward in this paper. This algorithm improved the cluster head selection rules and combined MD protocol algo- rithm. It can effectively reduce the probability of nodes with lower residual energy chosen to be the cluster head and make the cluster head as much as possible to maintain the sleep state. The results of simulation show that the improved protocol prolong the network lifetime more effectively in comparison with the original LEACH protocol.