METHODS AND APPARATUSES FOR BEAM FAILURE RECOVERY (BFR)

Title:

METHODS AND APPARATUSES FOR BEAM FAILURE RECOVERY (BFR)

Document Type and Number:

WIPO Patent Application WO/2021/013150

Kind Code:

A1

Abstract:

A method for Beam Failure Recovery (BFR) performed by a User Equipment (UE) includes the UE receiving, from a Base Station (BS), a first configuration indicating a first Reference Signal (RS) associated with a first cell of the BS, determining whether a first beam failure event is detected on the first cell by assessing a first radio link quality based on the first RS, triggering a first BFR procedure for the first cell when the first beam failure event is detected on the first cell, and when the first BFR procedure is triggered and not cancelled, performing operations including: determining whether the UE is allocated with an Uplink (UL) resource that is available for transmitting a BFR report, where the UL resource is a Physical Uplink Shared Channel (PUSCH) resource, when the UE is allocated with the UL resource, generating, in response to the first BFR procedure, the BFR report, and transmitting, on the UL resource, the BFR report to the BS, and when the UE is not allocated with the UL resource, triggering, in response to the first BFR procedure, a Scheduling Request (SR) procedure for BFR.

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Inventors:

TSAI HSINHSI (CN)
CHIN HENGLI (CN)
CHEN HUNGCHEN (CN)
YU CHIAHAO (CN)
WEI CHIAHUNG (CN)

Application Number:

PCT/CN2020/103300

Publication Date:

January 28, 2021

Filing Date:

July 21, 2020

Export Citation:

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Assignee:

FG INNOVATION CO LTD (CN)

International Classes:

H04L5/00

Domestic Patent References:

WO2019032882A1	2019-02-14
WO2019032882A1	2019-02-14

Foreign References:

CN109982431A	2019-07-05
US20180279229A1	2018-09-27

Other References:

NOKIA: "Offline 104: Timer based BFR MAC CE Transmission", 3GPP RAN WG2 MEETING #109BIS-E，R2-2003903, 30 April 2020 (2020-04-30), XP051879270
ASUSTEK: "3GPP TSG-RAN WG2 Meeting #102，R2-1806916", DISCUSSION ON PUCCH BEAM FAILURE RECOVERY REQUEST IN NR, 25 May 2018 (2018-05-25), XP051443357
INTEL CORPORATION: "On Beam Management Enhancement", 3GPP TSG RAN WG1 MEETING #97，R1-1906816, 17 May 2019 (2019-05-17), XP051728267

Attorney, Agent or Firm:

SHENZHEN SCIENBIZIP INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)

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