US 11,678,394 B2
Techniques for multicast beam failure and recovery
Le Liu, Fremont, CA (US); Alberto Rico Alvarino, San Diego, CA (US); Peter Gaal, San Diego, CA (US); Wanshi Chen, San Diego, CA (US); Tao Luo, San Diego, CA (US); Xiaoxia Zhang, San Diego, CA (US); Ayan Sengupta, San Diego, CA (US); Kazuki Takeda, Tokyo (JP); and Prasad Reddy Kadiri, San Diego, CA (US)
Assigned to QUALCOMM INCORPORATED, San Diego, CA (US)
Filed by QUALCOMM incorporated, San Diego, CA (US)
Filed on Jun. 21, 2021, as Appl. No. 17/352,866.
Claims priority of provisional application 63/043,696, filed on Jun. 24, 2020.
Prior Publication US 2021/0410220 A1, Dec. 30, 2021
Int. Cl. H04W 76/19 (2018.01); H04L 12/18 (2006.01); H04W 4/06 (2009.01); H04W 72/1268 (2023.01); H04W 74/08 (2009.01); H04W 72/23 (2023.01)
CPC H04W 76/19 (2018.02) [H04W 4/06 (2013.01); H04W 72/1268 (2013.01); H04W 72/23 (2023.01); H04W 74/0833 (2013.01); H04L 12/189 (2013.01)] 30 Claims
OG exemplary drawing
 
1. An apparatus for wireless communication at a user equipment (UE), comprising:
a processor,
memory coupled with the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
transmit, to a network entity, a beam recovery request comprising an indication of a multicast beam, wherein the beam recovery request is transmitted based at least in part on a unicast uplink grant, wherein the unicast uplink grant comprises a set of uplink resources for a multicast beam recovery procedure based at least in part on a failure of the multicast beam associated with multicast communications between the UE and the network entity;
receive, from the network entity in response to the beam recovery request, a response message comprising an indication of a second uplink grant, an indication of a second beam for communications between the UE and the network entity, or both; and
transmit, to the network entity, a first uplink transmission according to the second uplink grant, over the second beam, or both.