公开(公告)号：US20200373989A1

公开(公告)日：2020-11-26

申请号：US16637165

申请日：2018-08-09

Applicant: INTEL IP CORPORATION

Inventor： Leiqin Yan ,  Yushu Zhang ,  Gang Xiong ,  Guotong Wang ,  Alexei Davydov

IPC: H04B7/06 ,  H04W74/08 ,  H04W52/50 ,  H04W52/36 ,  H04W80/08 ,  H04W56/00 ,  H04L5/00 ,  H04W76/27 ,  H04L5/10 ,  H04W72/00 ,  H04W80/02

Abstract: Provided herein are method and apparatus for beam recovery. It provides an apparatus for a UE (101) including a radio frequency (RF) interface; and processing circuitry configured to: determine beam quality for one or more BPLs between the UE (101) and an access node (111,112); and in response to the beam quality for all of the BPLs being below a first predetermined threshold, encode Physical Random Access Channel (PRACH) data to include a beam recovery request that identifies a candidate beam of the access node (111,112); determine a transmit power for the beam recovery request; and send the PRACH data to the RF interface for transmission to the access node (111,112) with the transmit power. At least some embodiments allow for determining a transmission power to transmit a PRACH, to ensure reception of the PRACH, and allow for determining whether to use a PRACH or a PUCHH.