An unequal cluster-based routing scheme for multi-level heterogeneous wireless sensor networks

摘要: In wireless sensor networks (WSNs), clustering can significantly reduce energy dissipation of nodes, and also increase communication load cluster heads. When multi-hop model is adopted in clustering, “energy hole” problem may occur due to unbalanced consumption among Recently, many protocols have been proposed solve this problem. And the main way using unequal control size clusters. However, these are about homogeneous few heterogeneous networks. paper, we present an cluster-based routing scheme for WSNs with multi-level heterogeneity called UCR-H. The field partitioned into a number equal-size rectangular units. We first calculate clusters each unit by balancing heads different then find optimal units minimizing total inter-cluster forwarding. Finally, elaborately designed based on node’s level unit. threshold avoid excessive punishment nodes higher level. Simulation results show that our effectively mitigates achieves obvious improvement network lifetime.