Methods and systems for adapting beamwidth of beams on NR physical channels

A User Equipment (UE) for aligning beams with beams of a Next Generation Node B (gNB), the UE comprising:

• memory storing one or more computer programs;
• a transceiver;
• and
• one or more processors communicatively coupled with the memory and the transceiver,
• wherein the one or more computer programs include computer-executable instructions that, when executed by the one or more processors, cause the UE to:
• determine that a strength of a signal, received through a plurality of Reception (RX) beams of the UE of the UE, is less than a threshold strength for decoding the signal, the signal being transmitted using a Transmission (TX) beam of the gNB,
• determine a direction along which the strength of the signal is increasing,
• determine a first RX beam and a second RX beam in the determined direction among the plurality of RX beams, a strength of the signal received through the first RX beam being greater than a strength of the signal received through the second RX beam, and
• generate a wide RX beam by refining RX beam codebooks of the first RX beam and the second RX beam, or a narrow RX beam to have a beam direction between beam directions of the first RX beam and the second RX beam,
• wherein the narrow RX beam is narrower than either the first RX beam or the second RX beam, and the wide RX beam is wider than either the first RX beam or the second RX beam, and
• wherein the RX beam codebooks are refined by tuning at least one of phase angles of phase shifters or gains of Power Amplifiers and Low Noise Amplifiers (PAs/LNAs) of at least one UE antenna element generating the first RX beam and the second RX beam.