蜂窝网络覆盖下的D2D通信研究

Research on D2D Communication Underlaying Cellular Network

随着物联网与大数据时代的到来,频谱资源日益紧缺。为缓解频谱资源紧张,提高频谱资源利用率,将D2D通信技术引入蜂窝网络,同时与NONA、EH、Relay等技术结合,通过合理的资源分配与功率控制,改善蜂窝通信网络服务性能,降低通信时延,提高频谱资源利用率。与传统蜂窝通信网络比,D2D通信技术加入蜂窝网络可扩大蜂窝网络覆盖范围,提高边缘用户吞吐量与蜂窝用户和D2D用户的吞吐量,具有广阔的应用前景。

With the advent of the Internet of Things and the era of big data,spectrum resources have become increasingly scarce.D2D communication technology has been introduced into the cellular network for alleviating the situation of spectrum resources and improving the utilization of spectrum resources.The service performance of the cellular communication network has been improved through reasonable resource allocation and power control,combining with technologies such as NONA,EH and Relay,it reduces the delay of communication and improves the utilization of spectrum resources.Compared with the traditional cellular communication network,D2D communication technology joined into the cellular network can expand the coverage of the cellular network,improve the throughput of the edge users,and the throughput for users as a whole,it will has a broad application prospect.