Downlink System Performance of Cooperative Multiple Points Transmission with Realistic RRM Structure

Abstract

As one of the most promising physical layer technology for next generation cellular system, cooperative multiple points transmission (COMP) brings significant changes to wireless system, on RRM part especially. How to select Cooperative Set (CS) is critical issue for COMP. Based on geometry criteria, this paper proposes two methods of cooperative area selections, ‘UE centric’ and ‘Networks pre-defined’. Simulations with realistic RRM structure and feedback assumptions show that UTRAN LTE downlink system performance could be greatly enhanced by COMP technology. UE centric CS selection provides the best performance gain at the expense of system complexity. Among network predefined CS cases, intra-site CS pattern is recommended with good performance in terms of sector and cell-edge throughput.