Interference Mitigation via Beam Range Biasing for 5G mmWave Coexistence with Incumbents

Abstract

In this paper, we propose two interference mitigation techniques to enable the coexistence of fifth-generation new radio (5G-NR) with existing incumbent systems at millimeter frequencies. In particular, we propose to assign offsets, or bias values, to the base station beams such that users are discouraged to associate to the beams that are aligned with the incumbent receiver. We present a case study to evaluate the 5G uplink interference experienced at an existing incumbent in a dense urban city. Our results show that beam biasing provides better balance in 5G coverage and interference protection when compared to spatial exclusion zones.