通信工程文献翻译——摘要  

D2D通信已被建议作为一个重要的，补充现有的允许两个相邻蜂窝用户设备(问题)直接沟通的集中式蜂窝网络。本文利用D2D提高蜂窝网络的无线多播服务。特别是，我们考虑D2D发送UE可以作为一个全双工（FD）中继辅助蜂窝组播从基站（BS）的一组两个UE。和一个新的方案，使小区内的D2D重发垫提出了一种蜂窝组播。在最小信号对干扰和噪声比的约束条件下（SINR）每个接收器的使用要求，该计划的目的是选择一个组播组中最好的UE与服务基站进行D2D重发。因此，总发射功率消耗在BS和UE可以最小化的选择。数值结果表明，该方案优于传统的蜂窝组播方案，因为它在达到同样的信噪比指标接收机使用更少的功率。

关键字  D2D通信，移动组播，全双工中继，功率控制，干扰管理

引文章，Yang K，Liu P，等。采用全双工设备到设备（D2D）为基础的无线中继组播服务：一二用户案例。

1 简介 

在蜂窝网络中，无线组播[ 1 ]是一种频谱有效的方式来同时给多用户提供相同的内容。由于接收器总是采用经历不同的信道条件，蜂窝组播的数据速率，选择UE必须根据最坏的信道条件。否则，需要一个在蜂窝组播发送者（即，基站）发射功率高的，以满足使用要求保证成功接收的最小信噪比。这导致了显著蜂窝组播的可实现速率或能量效率的劣化，特别是当大部分（但不是全部）在接收UE良好的信道条件下，像这样或很少使用与渠道......

Abstract D2D communication has been proposed as an important supplement to the existing centralized cellular networks which allows two physically adjacent cellular user equipments (UEs) to communicate directly.This paper concerns using D2D to improve wireless multicast services in cellular networks. Specially, we consider a D2D transmitter UE can act as a full-duplex (FD) relay to assist a cellular multicast from a base station (BS) to a group of two UEs. And a new scheme which allows an intra-cell D2D retransmission to underlay a cellular multicast is proposed. Under the constraint of the minimum signal-to-interference-and-noise ratio (SINR) required by each of the receiver UEs, the aim of the scheme is to select the best UE in a multicast group to perform the D2D retransmission with the serving BS. Thus, the aggregate transmit power consumed at the BS and at the selected UE can be minimized. The numerical results show that the proposed scheme outperforms

traditional cellular multicast scheme as it consumes less transmit power to achieve the same SINR target at the receiver UEs.

Keywords D2D communication, cellular multicast, full-duplex relaying, power control, interference management

1 Introduction

In cellular networks, wireless multicast [1] is a spectrum efficient way to deliver the same content to multiple UEs simultaneously. Since the receiver UEs always experience different channel conditions,the data rate of a cellular multicast has to be selected according......