- Patent Title: System and method for transmitting beam failure recovery request
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Application No.: US17004920Application Date: 2020-08-27
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Publication No.: US11425720B2Publication Date: 2022-08-23
- Inventor: Muhammad Nazmul Islam , Sundar Subramanian , Juergen Cezanne , Junyi Li
- Applicant: QUALCOMM incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM incorporated
- Current Assignee: QUALCOMM incorporated
- Current Assignee Address: US CA San Diego
- Agency: Loza & Loza, LLP
- Main IPC: H04W72/04
- IPC: H04W72/04 ; H04L5/00 ; H04L1/00 ; H04L5/14 ; H04B7/06 ; H04W16/28 ; H04W74/08 ; H04W74/00

Abstract:
A user equipment (UE) can transmit a beam failure recovery request using contention-based physical random access channel (PRACH) resources to supplement and/or replace non-contention-based resources for transmitting the beam failure recovery request. The UE can reduce beam recovery latency by informing its intention for beam failure recovery by transmitting a beam failure recovery request during the random access channel (RACH) procedure. The base station may dedicate a set of RACH resources that can be used for both transmitting regular contention-based RACH messages and beam failure recovery request.
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