The Meta Distribution of SINR for Small Cell Networks with Temporal Traffic

Abstract

In this paper, we develop a mathematical framework for the analysis of SINR in small cell networks with temporal traffic variation. Our model captures the interplay between the spatial location of small access points, which determines the magnitude of mutual interference, and their temporal traffic dynamic. We derive a tractable expression for the SINR meta distribution, and verify its accuracy via simulations. Based on our analysis, we find that i) under the same configuration, when traffic condition changes from light to heavy, the corresponding SINR requirement can differ by more than 10 dB for the network to maintain coverage, ii) the SINR coverage probability varies largely with traffic fluctuation in the sub-medium load regime, and iii) spatial densification can boost up the cell-edge rate almost linearly in the dense regime, thus demonstrates the effectiveness from cell densification.