Abstract: hhe nodes in wireless sensor networks energy is supplied by the battery, and the energy is very limited. hherefore,we need to design more energy-efficient wireless sensor network protocols to support the operation of the network as much as possible extend the effective lifetime of the current study to become one of the hotspots. This wire- less sensor networks extend the effective lifetime of the issues in the following two aspects; Firstly, we improved the protocol about, number(ID). Second, based on the LEACH protocol, we proposed an optimal algorithm for the non-clus- to head nodes to choose the best cluster. The new algorithm considers both the current energy of the cluster-head and the distance when the non-cluster head node determines its cluster. I3y balancing energy depletion over the whole net- work,simulation results show that our algorithm outperforms LEACH protocol and prolongs the network lifetime.

Key words: Wireless sensor networks, LEACH protocol, Cluster, LEACH procotol