Abstract
A new user-centered power allocation and interference merging scheme for virtual cells in ultra-dense networks is proposed in this paper, which can reduce system interference and improve system performance. The proposed scheme is divided into two steps. The first step is to allocate power to users in the virtual community to improve the utilization of system resources. In this connection, we propose a proportional power allocation algorithm, which reduces the complexity. The second step is to merge the virtual cells based on their interference strength. Since user access is generally based on RSRP (Reference Signal Received Power) rather than path loss, we use RSRP as the interference merging indicator. The interference merging scheme we proposed presents the interference strength of the virtual cell better. The simulation results show that the proposed proportional power allocation scheme has similar performance to the traditional proportional power allocation. At the same time, compared with the traditional path loss interference merging algorithm, our proposed interference merging scheme shows better performance.
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