Importance-Based Base Station Activation for CoMP-Enabled Ultra-Dense Networks

초록

In this paper, we introduce a novel importance-based station (BS) activation scheme for the multi-tier coordinated multi-point (CoMP)-enabled ultra-dense network (CUDN). We first define a BS activation parameter by considering the BS cooperation set sizes of the users associable with the typical BS. To analyze the BS activation probability for this proposed scheme, we apply Reciprocal Inverse Gaussian (RIG) approximation to deal with the discrete nature of the number of cooperating BSs. Using this probability, we also derive an expression for the coverage probability of CUDN with our proposed BS activation scheme. Using simulations, we verify our analysis and also investigate the performance of multi-tier CUDN in terms of coverage probability, area spectral efficiency (ASE), and network energy efficiency (NEE). We also show that the proposed BS activation scheme can outperform the existing traffic-aware BS activation scheme.

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