Beam Misalignment Detection for Wireless Communication System with Beamforming

摘要

A method of beam misalignment detection for wireless communication system with beamforming is proposed. To identify a misaligned beam, a relative beam quality degradation is applied by comparing a dedicated beam quality with a reference beam quality. The reference beam favors similar transmission path as the dedicated beam, and has better mobility robustness. In one embodiment, the reference beam is an associated control beam of the dedicated beam. To detect beam misalignment, a first dedicated beam SINR is compared with a second associated control beam SINR.

主权项

1. A method comprising:
establishing a data connection with a base station by a user equipment (UE) over a dedicated beam, wherein the dedicated beam has a fine resolution with narrower beamwidth; monitoring the dedicated beam and determining a first beam quality; monitoring a reference beam and determining a second beam quality, wherein the reference beam has a coarse resolution with wider beamwidth, and wherein the dedicated beam and the reference beam have overlapping spatial coverage; and determining a beam alignment status of the dedicated beam by comparing the first beam quality and the second beam quality.