Towards energy efficient relay deployment in multi-user LTE-A networks

摘要

Communication using relay node (RN) cooperation is attractive research interest since it supports wide area coverage and high data rates. RNdeployment problem in multiple users long-term evolution-advanced (LTE-A) network is a challenging issue. In this article, the RN deployment problem for a single carrier-frequency division multiple access uplink system is considered. The total energy efficiency (EE) and average EE for multi-user single-relay in the LTE-A network are considered as the performance measures to select the optimum position of RN. Two types of users are deployed: guaranteed bit rate and non-guaranteed bit rate when performing load balancing that can influence the selection of the optimum position of RN. Simulation results show that the EE is increased by 10% based on load balancing compared to unbalanced loaded network. The optimum position of RN at 75% of a cell radius towards the cell edge can significantly improve the EE.