能耗与时延权衡的分布式信息扩散方法

Distributed Information Diffusion Algorithm with Energy-Delay Tradeoff

能量消耗与传输时延是无线传感器网络协议设计的两个重要指标。针对一维线型传感器网络,探究能耗与时延权衡的信息扩散问题。通过理论推导与分析,计算得出给定时延约束下高能效信息扩散的最优传输次数与单跳传输距离。基于理论分析结果,提出能耗与时延权衡的分布式信息扩散算法。该算法包含确定候选转发节点集合以及最优中继节点选择两部分。仿真表明所提算法能够实现信息扩散的能耗与时延权衡。

Energy Consumption and transmission delay are two crucial factors of the protocol design in wireless sensor networks.For one-dimensional linear senor networks,the information diffusion problem is explored with the consideration of energydelay tradeoff.By theoretic deduction and analysis,the optimal transmission times and single-hop transmission distance are calculated for energy-efficient information diffusion under a given delay constraint.Based on the analytical results,a distributed algorithm is proposed to balance the energy consumption and delay.The proposed algorithm comprises of the computation of forwarding node set and the selection of optimal relay node.Simulation results show that our algorithm could achieve the tradeoff between energy consumption and transmission delay.