Relay Selection for D2D Communication Systems in Cellular Networks

Abstract

Nowadays the explosive development on the number of mobile user and multimedia services cause a severe traffic overload problem in the cellular network Data offloading in the Third-Generation Partnership Project (3GPP) is defined as critical scheme to cope with this issue Furthermore device-to-device (D2D) communications have been considered as a new data-offloading solution The D2D communications underlay cellular networks infrastructure reduces the radio access network load and the core network load Device-to-device (D2D) communication commonly refers to a technology that enables devices to communicate directly without access points base stations and wireless operators With the application of specific rules and strategies D2D communications decrease the mobile network load and increase the spectral efficiency Moreover relay assisted transmissions are considered in this thesis to efficiently improve the performance of relay assisted D2D communications when D2D user equipments (UEs) are too far away from each other or the quality of the D2D channel is not good enough for direct communications Thereafter the relay selection issues on D2D communication in cellular network is studied in this thesis Finally a centralized relay selection method for relay assisted D2D communication systems is proposed in this thesis

Date of Award	2014 Aug 25
Original language	English
Supervisor	Hsiao-Hwa Chen (Supervisor)