基于EH的D2D通信中继选择算法

Relay selection algorithm based on energy harvest in D2D communication

为了使D2D通信高效节能地选择中继节点,结合能量收集技术和D2D技术,构建一种基于能量收集的D2D通信单小区模型,提出一种基于能量收集的中继选择算法。利用能量收集技术收集设备周围干扰信号携带的能量为中继通信供能,避免设备因本身剩余能量低于阈值而发生通信中断或选择中继失败。在物理域分析能量收集功率和信道情况;受人类社会竞选机制启发在备选中继集中由通信2个端节点共同投票选择合适中继,避免中继仅符合某一端节点要求导致整个通信中断。仿真结果表明本文所提算法与结合设备接触和剩余能量的D2D中继选择算法相比,提高了中继选择成功概率、设备生存时间以及系统吞吐量。

In order to select the relay node efficiently and energy-saving for D2D communication,we combine energy harvesting technology and D2D technology,build a D2D homogenous cell model based on energy harvesting,and propose a relay selection algorithm based on energy collection.Using energy harvesting technology to provide relay energy,the node is avoided from communication interruption or selection relay failure due to its low residual energy.Energy harvesting power and channel conditions are analyzed in the physical domain,and the appropriate relay in the alternative relay set is selected by the communication two-end node inspired by the human social campaign mechanism,so as to avoid the interruption of the entire communication caused by the relay meeting only one node requirement.The simulation results show that the algorithm proposed in this paper improves the probability of relay selection success,equipment survival time and system throughput compared with the prestige-based relay selection algorithm.