US 12,342,322 B2
Identifying a default beam for communications on a physical downlink shared channel (PDSCH)
Tianyang Bai, Somerville, NJ (US); Yan Zhou, San Diego, CA (US); Tao Luo, San Diego, CA (US); and Junyi Li, Franklin Park, NJ (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Mar. 29, 2021, as Appl. No. 17/215,661.
Prior Publication US 2022/0312382 A1, Sep. 29, 2022
Int. Cl. H04W 72/02 (2009.01); H04W 72/044 (2023.01); H04W 72/1273 (2023.01); H04W 72/23 (2023.01); H04W 72/51 (2023.01)
CPC H04W 72/02 (2013.01) [H04W 72/044 (2013.01); H04W 72/1273 (2013.01); H04W 72/23 (2023.01); H04W 72/51 (2023.01)] 24 Claims
OG exemplary drawing
 
1. A method for wireless communications by a user equipment (UE), the method comprising:
receiving, from a network entity, configuration information, wherein the configuration information includes:
(i) an indication to select a default beam as a beam associated with a control resource set (CORESET) with a lowest identifier in a latest monitored slot until the UE receives another indication to use a fixed beam across slots; or
one or more first rules for selecting the default beam in response to a beam failure recovery; and
(ii) one or more second rules for selecting the default beam, the one or more second rules comprising:
a first rule that, for UE operation in a first frequency band, the default beam is selected based on a control resource set (CORESET) identifier of a latest monitored slot; and
a second rule that, for UE operation in a second frequency band, the default beam comprises a fixed beam associated with at least one of a transmission configuration indicator (TCI) state with a lowest identifier in an active bandwidth part (BWP) or a CORESET with a lowest identifier in the active BWP;
selecting the default beam based on the configuration information; and
receiving a physical downlink shared channel (PDSCH) using the default beam.