关键词: 簇头均匀分布, 备用簇头, 能量消耗

Abstract: Aiming at the problem of energy loss result from non-uniform cluster generated by LEACH protocol, a routing protocol, LEACH-EP, is proposed, which is based on the node’s remaining energy and the geographical position, for hierarchical symmetrical clustering in administrative levels and the establishment of the spare cluster to reduce the frequency of repeated clustering. The simulation results show that under the same conditions of initial energy in the nodes and network size, the energy consumption is far less than the LEACH protocol, and the nodes survive longer, more suitable for large-scale low-power wireless sensor networks routing protocols.

Key words: cluster head symmetrical distribution, spare cluster head, energy consumption