Adaptive Resource Allocation Modes for Half Duplex per Band Relays

Interference coordination and Resource allocation has emerged as one of the most attractive techniques for combating interference in next generation cellular networks, such as the 3GPP UTRAN Long Term Evolution (LTE), which operates with universal frequency reuse in order to exploit the whole frequency bandwidth in each cell. Inter-cell interference caused by simultaneous transmissions scheduled on the same frequency resources by nearby base stations (BSs), particularly limiting the performance of user equipments (UEs) located at the cell-edges. Cooperative communications may improve the reliability of transmissions, but can also be prejudicial if relays are strongly interfered. In this paper we propose resource allocation modes for relays and reduce both interference and energy consumption. Simulation results show how our proposed allocation modes permit to outperform classical modes in terms of cooperation effectiveness, power consumption and perceived Quality of Service.