System performance of LTE-advanced network with D2D multi-hop communication

This paper studies the tight integration of D2D communication into an LTE-Advanced network and the performance of D2D multi-hop communication. The main focus is on the capacity of the proposed system with multiple idle UEs acting as relays. The relays are chosen to form multi-hop communication and connect with both active UEs through D2D technology. Further, we present numerical results based on the system simulations in an interference limited scenario and compare results with and without the use of resource sharing techniques. The results indicate that appropriate resource sharing and allocation algorithm could increase SINR by reducing interference, and the system throughput could be improved more than 15% in the hybrid cellular network.

I. Introduction

Next generation cellular networks are being designed to provide seamless coverage and higher data rates, such as femtocell in LTE-Advanced networks. However, the interference becomes more serious when more femtocells have been deployed in LTE-Advanced networks. The operators will lose the control of network if the ownership of femtocell is private. LTE-Advanced network requires another mode to accomplish regional communications.