Abstract
It is necessary to consider the energy efficiency of nodes and load balance in wireless sensor networks. This paper combines with the network of the actual heterogeneous nodes, the improved algorithm of LEACH is proposed, which is called LEACH-HA. The optimal number of cluster heads is derived with improved in the network which increases energy of nodes become cluster probability. A hybrid communication mode that cluster heads alternate between single hop and multi-hop mode is proposed. After analysis LEACH-HA improves the energy efficiency among nodes and expands the coverage of network.
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