On the Optimization of Deployed Positions for Fixed Relay Stations in a LTE Cooperative Network

The Fixed Relaying technique is presented as the most mature cooperative technique. This technique aims at increasing the network coverage and/or capacity. In addition, this technique brings economic benefits to the Mobile Network Operators (MNOs). The aim of this paper is to develop a Fixed Relay Station (FRS) deployment algorithm, taking into account the number of used FRSs and considering a multi-cell environment. The goal of the algorithm is to find a FRS deployment pattern for each cell, taking into account the FRSs positions in each cell of the cluster, minimizing the FRS-FRS inter- and intra-cell interference. Using the algorithm implementation, this paper investigates the number of FRSs which should be used in each cell. The achieved results suggest that the ideal number of used FRS per cell is 12. In this case, the algorithm increased 32% and 82% the User Equipment (UE) throughput and its Signal-to-Interference plus Noise (SINR) at the cell edge, respectively.