Using full duplex relaying in device-to-device(D2D)based wireless multicast services:a two-user case  

作　　者：ZHANG GuoPeng YANG Kun LIU Peng DU Yao 

机构地区：[1]Internet of Things Research Center, China University of Mining and Technology [2]School of Computer Science and Electronic Engineering, University of Essex [3]School of Information and Electrical Engineering, China University of Mining and Technology

出　　处：《Science China(Information Sciences)》2015年第8期1-7,共7页中国科学（信息科学）（英文版）

基　　金：Zhang G P,Liu P,Du Y was supported by China Fundamental Research Funds for the Central Universities(Grant No.2014QNA82);National Natural Science Foundation of China(Grant No.61471361);Post-Doctoral Fellowship Program of the China Scholarship Council(Grant No.2900759643);Yang K was supported by the EU FP7 Projects EVANS(Grant No.GA-2010-269323);CROWN(Grant No.GA-2013-610524)

摘　　要：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 nmlticast 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.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 nmlticast 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.

关 键 词：D2D communication cellular multicast full-duplex relaying power control interference manage-ment 

分 类 号：TN929.5[电子电信—通信与信息系统]