无线传感器网络能量均衡拓扑模型研究

针对BA模型仅考虑节点寿命对网络拓扑结构影响的现状,考虑到拓扑能量利用率不高会缩短网络生命周期,在分析网络平均剩余能量和通信半径对网络生命周期影响的基础上,提出一种无线传感器网络能量均衡拓扑模型.该模型在拓扑演化过程中,综合考虑节点剩余能量、通信半径和节点度,并引入剩余能量调节参数、通信半径调节参数和节点度调节参数,最终使剩余能量大的节点连接概率更高.理论分析和仿真实验结果表明,该模型不仅具有无标度网络的幂律特性,具有较好的稳定性,且能够均衡节点和网络能耗,延长网络的生命周期.

Research of Energy-balanced Topology Model in Wireless Sensor Networks

Considering that the BA model only focuses on the effect of the node lifetime to the network topological structure,together with the fact that low energy utilization will incur the shorting of the lifetime of the network,this paper proposes an energy-balanced topology model for wireless sensor networks by analyzing the influence of the average network residual energy and communication radius to the network lifetime.During the topology evolution,the proposed model considers the residual energy of node,the communication radius and the node degree synthetically,meanwhile,adopts the three adjust parameters of the residual energy,the communication radius and the node degree,comprehensively,and eventually makes those nodes with more residual energy have high connection probability.Both the theoretical analysis and the simulation results show that the proposed model not only has the power-law characteristics of scale-free network with good stability,but also can balance the energy consumption of the nodes and the network,thus can prolong the network lifetime.