一种适用于D2D通信的启发式接入算法

A Heuristic Accessing Algorithm for Device-to-Device Communications

直通通信(Device-to-Device,D2D)技术是5G移动通信的关键技术之一,蜂窝网络中的D2D通信用户接入技术及其性能研究等已成为热点问题。基于一种新型随机几何网络模型,通过研究D2D用户对蜂窝用户的上行链路频谱资源的复用,提出了一种D2D通信启发式接入算法,并同随机接入算法进行了比较分析。仿真结果表明,随机几何模型易于分析链路的信干噪比,更符合未来移动通信密集组网和用户分布特点;该模型下的启发式算法比随机算法的性能更优,算法具有收敛快、接入性能好和接入简单的特点,具有更好的实用价值。

The device-to-device(D2D)communication technology is considered to be one of the key techniques of 5G mobile communications.The access method for D2D user and its application in the cellular networks have become hot issues.Based on the stochastic geometry network model,how to duplex the uplink spectrum resources under the cellular networks is studied and a heuristic access algorithm is proposed and compared with the random access algorithm.Simulation results show that the stochastic geometric model is easy for analyzing the signal-to-interference plus noise ratio(SINR)of the link,and the heuristic algorithm has better performance than the random algorithm.This proposed algorithm converges rapidly,has better performance of accessing ability and is easy to access cellular networks.It has better value in practice.