CoMP set formulation for downlink transmission in dense small cell networks

The small cell network is one of the emerging technologies for the next generation wireless systems. It can enlarge cell coverage, boost peak data rate, improve link quality, and offer flexible deployment. In this paper, we investigate a specific small cell network scenario, where the density of small cell base stations (BS) is much higher than that of user equipments (UE). Under this condition, each UE can be served by multiple small cell BSs, which also motivates the use of coordinated multi-point (CoMP) transmissions in dense small cell networks. Therefore, in this paper, we investigate the small cell network with highly dense deployment of small cell BSs, and propose CoMP set formulation method, which selects small cell BSs according to the designed metric, for downlink (DL) transmissions. We also conduct simulations to validate the performance of the proposed method, and the simulation results show that the proposed CoMP method can indeed improve the performance of dense small cell networks and hence offer better communication quality.