无线传感器网络不等级能级环模型及数据传输策略

目的提高无线传感器网络传感器节点能量利用率,延长网络寿命。方法对无线传感器网络的等级环模型及数据传输策略进行研究。结果提出了一个不等级能级环无线传感器网络模型,并基于数据转发量的估计,计算了不等级环的半径,在此基础上定义了能级环上的支持节点,以总体网络能量消耗最小为优化目标,提出了支持节点在数据传输中的权力轮转与数据转发策略,最后设计了仿真实验并进行了验证,实验表明,不等级能级环模型中,在网络计算580次时,传感器网络能量利用率达到0.466 39。结论不等级能级环无线传感器网络模型及权力轮转与数据转发策略,能够有效地抑制能量洞的出现,提高网络节点能量利用率,延长网络寿命。

Non-uniform ring energy level model and data transmission strategy research for wireless sensor networks

Aim To raise the use ratio of the network node′s energy,and prolong the network′s life.Methods By studying uniform ring energy level model and the data transmission strategy for wireless sensor networks.Results In this paper,a non-uniform ring energy level model was presented,the calculation of the radius of the non-uniform ring energy level was given on the basis of the estimated value of the data forwarding load,and a definition of the supporting node on the non-uniform ring energy level is achieved.Aimed at decreasing the overall network energy consumption,the supporting node′s power transfer and data transmission strategy was presented,a simulation experiment designed and proved in the end.Experiments show that,with non-uniform ring energy level model,the use ratio of energy of sensor node in network achieve 0.466 39 after network is used to calculate 580 times.Conclusion It turns out that non-uniform ring energy level model and the supporting node′s power transfer and data transmission strategy can restrain the energy hole effectively,raise the use ratio of the network node′s energy,and prolong the network′s life at the same time.