US 12,294,437 B2
System and method for link recovery with discontinuous reception
Young Hoon Kwon, Laguna Niguel, CA (US); and Pengfei Xia, San Diego, CA (US)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Appl. No. 17/257,836
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
PCT Filed Jan. 26, 2019, PCT No. PCT/CN2019/073276
§ 371(c)(1), (2) Date Jan. 4, 2021,
PCT Pub. No. WO2020/007037, PCT Pub. Date Jan. 9, 2020.
Claims priority of provisional application 62/793,134, filed on Jan. 16, 2019.
Claims priority of provisional application 62/735,388, filed on Sep. 24, 2018.
Claims priority of provisional application 62/693,200, filed on Jul. 2, 2018.
Prior Publication US 2021/0297139 A1, Sep. 23, 2021
Int. Cl. H04B 7/00 (2006.01); H04B 7/08 (2006.01); H04L 1/00 (2006.01); H04W 72/044 (2023.01); H04W 72/0446 (2023.01); H04W 72/23 (2023.01); H04W 76/19 (2018.01); H04W 76/28 (2018.01); H04W 80/02 (2009.01)
CPC H04B 7/088 (2013.01) [H04L 1/0061 (2013.01); H04W 72/0446 (2013.01); H04W 72/046 (2013.01); H04W 72/23 (2023.01); H04W 76/19 (2018.02); H04W 76/28 (2018.02); H04W 80/02 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method for beam recovery by a user equipment (UE) operating in a discontinuous reception (DRX) mode, the method comprising:
receiving, by the UE, a channel state information-reference signal (CSI-RS) or a synchronization signal (SS)/physical broadcast channel (PBCH) block;
determining, by the UE, both that the CSI-RS or the SS/PBCH block is received while the UE is operating in a DRX ON state of the DRX mode and that a quality of the CSI-RS or the SS/PBCH block is less than a quality threshold, the CSI-RS or the SS/PBCH block quasi co-located with a demodulation-reference signal (DM-RS) of a physical downlink control channel (PDCCH); and based thereon
transmitting, by the UE, a recovery message to a base station indicating a change to a communication beam associated with the CSI-RS or the SS/PBCH block.