Patent ID: 9578644
Date: 2017-02-21
CPC Classifications: H04B,H04L,H04W

Claim:
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, wherein the first beam quality is associated with a signal to interference plus noise ratio (SINR) or a channel quality indicator (CQI) of the corresponding beam channel, and wherein the first beam quality is estimated by applying a first filtering window; selecting a reference beam from a plurality of directional beams to be associated with the dedicated beam; monitoring the selected 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, wherein the second beam quality is estimated by applying a second filtering window, and wherein the first filtering window is equal or smaller than the second filtering window.