基于自适应权重的无线传感器网络分簇路由协议

Clustering Routing Protocol Based on Adaptive Weight for Wireless Sensor Networks

针对无线传感器网络分簇路由协议存在的能耗不均衡及"热区"问题,设计了基于自适应权重的无线传感器网络分簇路由协议.协议首先选择节点剩余能量、邻居节点集合以及与汇聚节点距离等做为簇头待选指标,通过这些待选指标设定指标影响度进行簇头选举;然后在节点入簇阶段选择节点和簇头的剩余能量、簇内成员节点数以及节点与簇头间距离等做为入簇指标,并设计了自适应权重系数,动态调整入簇指标的权重系数,优化入簇条件;最后簇头采用多跳传输方式完成数据的传送.仿真结果表明:协议较好地均衡了网络内节点的能耗,提高了网络生命周期.

Aiming at the energy consumption imbalance and"hot zone"problems of clustering routing protocols in wireless sensor networks,a clustering routing protocol based on adaptive weight is designed.Firstly,the residual energy of nodes,the number of neighbors and the distance from sink nodes are selected as the cluster head selection indicators,and the impact degree of the indicators is set through these indicators to conduct cluster head election.Then,the residual energy of nodes and cluster heads,the number of nodes in clusters and the distance between nodes and cluster heads are selected as clustering indicators,and the adaptive weight coefficient is designed to dynamically adjust the weight coefficient of cluster indexes and optimize the cluster entry conditions.Finally,multi-hop transmission mode is used to transmit data.Simulation results show that the protocol can well balance the energy consumption of nodes in the network and improve the network life cycle.