Abstract: An optimization method based on boundary node is proposed, which is used to optimize clustering routing protocol. The boundary node is the node locating at the junction of adjacent clusters. Through dynamic allocation of these nodes, clusters load achieves balancing. Because the boundary nodes are far from the cluster center and need to participate in the balanced load, so the boundary nodes will not become the cluster heads, and the energy consumption is less, thus the multi hop routing forwarding algorithm based on boundary node is proposed by using this characteristic. The experimental results show that the optimization method proposed in this paper can balance the network energy consumption and prolong the lifetime of wireless sensor networks.
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Key words: wireless sensor network, clustering protocol, boundary node, balance, energy consumption