Title:
BEAM FAILURE RECOVERY IN WIRELESS COMMUNICATION SYSTEMS EMPLOYING MULTIPLE TRANSMISSION/RECEPTION POINTS
Document Type and Number:
WIPO Patent Application WO/2022/236775
Kind Code:
A1
Abstract:
A user equipment (UE) detects beam failure associated with a transmission/reception point (TRP) of a plurality of TRPs transmitting to the UE. Each TRP is associated with separate Physical Uplink Control Channel (PUCCH) resources for beam failure recovery (BFR). The UE applies, in response to detecting, a BFR procedure across PUCCH resources of the TRPs. In some aspects, the procedure is described by a single set of parameters/variable (s) across the PUCCH resources. Further, each of a plurality of TRPs transmits to a UE on a beam. A first of the TRPs receives, from the UE, a scheduling request (SR) in BFR PUCCH resources. The SR indicates that an uplink grant is requested by the UE to transmit beam failure information for at least one failed beam of the TRPs. The SR is a result of a single BFR procedure applied by the UE across the PUCCH resources of the TRPs.
Inventors:
YUAN FANG (US)
ZHOU YAN (US)
LUO TAO (US)
ZHOU YAN (US)
LUO TAO (US)
Application Number:
PCT/CN2021/093609
Publication Date:
November 17, 2022
Filing Date:
May 13, 2021
Export Citation:
Assignee:
QUALCOMM INC (US)
YUAN FANG (CN)
ZHOU YAN (US)
LUO TAO (US)
YUAN FANG (CN)
ZHOU YAN (US)
LUO TAO (US)
International Classes:
H04W72/04; H04W74/00
Foreign References:
| CN111278122A | 2020-06-12 | |||
| CN112119597A | 2020-12-22 | |||
| CN111149305A | 2020-05-12 | |||
| US20210044342A1 | 2021-02-11 | |||
| US20210029724A1 | 2021-01-28 |
Other References:
ASUSTEK: "Discussion on beam management for multi-TRP", 3GPP DRAFT; R1-2009156, vol. RAN WG1, 23 October 2020 (2020-10-23), pages 1 - 2, XP051945508
Attorney, Agent or Firm:
NTD PATENT & TRADEMARK AGENCY LTD. (CN)
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