# US 2021/0243743 A1 · Uplink beam failure report and beam reset for multiple component carriers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0243743 A1 - Document ID: US20210243743A1 - Status: Published application - Kind: A1 - Application number: 17/110,926 - Filed: 2020-12-03 - Published: 2021-08-05 - Earliest claimed: 2020-01-31 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Tianyang BAI; Yan ZHOU; Tao LUO; Junyi LI - Web page: https://patentgrep.com/patent/US20210243743A1 ## CPC - H04B 7/068: {using space frequency diversity (space-frequency coding H04L1/0606)} - H04W 72/044: based on the type of the allocated resource - H04B 7/06964: {Re-selection of one or more beams after beam failure} - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 72/51: based on terminal or device properties - H04W 72/542: using measured or perceived quality - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Certain aspects of the present disclosure relate to methods and apparatus for updating beam information across a plurality of component carriers (CCs) via downlink control information (DCI). ## Claims ### Claim 1 A method for wireless communications by a network entity, comprising: configuring a user equipment (UE) with a group of component carriers (CCs); receiving, from the UE, a report of a failed uplink beam on one of the CCs in the group; determining the same uplink beam has failed across other CCs in the group; and taking one or more actions to apply one or more new uplink beams on the CCs in the group. ### Claim 2 (depends on 1) The method of claim 1, further comprising: determining the CCs in the group based on a capability of the UE, wherein the capability indicates the UE uses a same analog beamformer on the CCs in the group. ### Claim 3 (depends on 1) The method of claim 1, wherein the same failed uplink beam across CCs uses same downlink and uplink reference signals, same spatial relation information, or same uplink transmission configuration information (TCI) state for beam indication. ### Claim 4 (depends on 1) The method of claim 1, further comprising: determining resources impacted by the failed uplink beam based on signaling from the UE, wherein the determined resources comprise at least of: any resources that use the failed uplink beam across CCs in a CC list or only uplink transmission resources across CCs with a same resource ID as a reported resource with the failed uplink beam. ### Claim 5 (depends on 4) The method of claim 4, wherein, if the UE signaling indicates the failed uplink beam relates to a maximum permissible exposure (MPE): the determined resources comprise only uplink transmission resources across CCs with a same resource ID as a reported resource with the failed uplink beam. ### Claim 6 (depends on 1) The method of claim 1, wherein the one or more actions comprise replacing the failed uplink beam with a same new uplink beam identified based on the report across CCs in the group, and wherein the same new uplink beam across CCs in the group uses same downlink and uplink reference signals, same spatial relation information, or same uplink transmission configuration information (TCI) state for beam indication. ### Claim 7 (depends on 6) The method of claim 6, wherein the report comprises an indication of a new uplink beam to replace the failed uplink beam. ### Claim 8 (depends on 7) The method of claim 7, wherein the new uplink beam replaces the failed uplink beam across CCs with a same timing. ### Claim 9 (depends on 7) The method of claim 7, further comprising determining which resources the new uplink beam applies to. ### Claim 10 (depends on 9) The method of claim 9, wherein the determination is that the new uplink beam applies to any resources that use the failed uplink beam across CCs in a CC list. ### Claim 11 (depends on 9) The method of claim 9, wherein the determination is that the new uplink beam applies to only uplink transmission resources across CCs with a same resource ID as a reported resource with the failed uplink beam. ### Claim 12 (depends on 9) The method of claim 9, wherein the network entity determines which resources the new uplink beam applies to based on signaling from the UE. ### Claim 13 (depends on 12) The method of claim 12, wherein, if the UE signaling indicates the failed uplink beam relates to a maximum permissible exposure (MPE): the determination is the new uplink beam applies only to uplink transmission resources across CCs with a same resource ID as a reported resource with the failed uplink beam. ### Claim 14 A method for wireless communications by a user equipment (UE), comprising: receiving, from a network entity, signaling configuring the UE with a group of component carriers (CCs); detecting a failed uplink beam on one of the CCs in the group; reporting the failed uplink beam to the network entity; and taking one or more actions to apply one or more new uplink beams on the CCs in the group. ### Claim 15 (depends on 14) The method of claim 14, wherein CCs in the group are determined based on a capability of the UE, and wherein the capability indicates the UE uses a same analog beamformer on CCs in the group. ### Claim 16 (depends on 14) The method of claim 14, wherein the same failed uplink beam across CCs uses same downlink and uplink reference signals, same spatial relation information, or same uplink transmission configuration information (TCI) state for beam indication. ### Claim 17 (depends on 14) The method of claim 14, further comprising: determining resources impacted by the failed uplink beam, wherein the determined resources comprise at least one of: any resources that use the failed uplink beam across CCs in a CC list or only uplink transmission resources across CCs with a same resource ID as a reported resource with the failed uplink beam. ### Claim 18 (depends on 17) The method of claim 17, further comprising: providing signaling to the network entity that determines the resources impacted by the failed uplink beam. ### Claim 19 (depends on 18) The method of claim 18, wherein, if the UE signaling indicates the failed uplink beam relates to a maximum permissible exposure (MPE): the determined resources comprise only uplink transmission resources across CCs with a same resource ID as a reported resource with the failed uplink beam. ### Claim 20 (depends on 14) The method of claim 14, wherein the one or more actions comprise replacing the failed uplink beam with a same new uplink beam identified based on the reporting across CCs in the group, wherein the same new uplink beam across CCs in the group uses same downlink and uplink reference signals, same spatial relation information, or same uplink transmission configuration information (TCI) state for beam indication, and wherein the new uplink beam replaces the failed uplink beam across CCs with a same timing. ### Claim 21 (depends on 20) The method of claim 20, wherein the reporting further comprises an indication of a new uplink beam to replace the failed uplink beam. ### Claim 22 (depends on 21) The method of claim 21, further comprising: determining which resources the new uplink beam applies to. ### Claim 23 (depends on 22) The method of claim 22, wherein the determination is that the new uplink beam applies to any resources that use the failed uplink beam across CCs in a CC list. ### Claim 24 (depends on 22) The method of claim 22, wherein the determination is that the new uplink beam applies to only uplink transmission resources across CCs with a same resource ID as a reported resource with the failed uplink beam. ### Claim 25 (depends on 22) The method of claim 22, further comprising: providing signaling to the network entity that determines which resources the new uplink beam applies to. ### Claim 26 (depends on 25) The method of claim 25, wherein, if the UE signaling indicates the failed uplink beam relates to maximum permissible exposure (MPE): the determination is the new uplink beam applies only to uplink transmission resources across CCs with a same resource ID as a reported resource with the failed uplink beam. ### Claim 27 An apparatus for wireless communications by a network entity, comprising: a transmitter configured to signal, to a user equipment (UE), a configuration of a group of component carriers (CCs); a receiver configured to receive, from the UE, a report a failed uplink beam on one of the CCs in the group; and at least one processor configured to determine the same uplink beam has failed across other CCs in the group and take one or more actions to apply one or more new uplink beams on the CCs in the group. ### Claim 28 (depends on 27) The apparatus of claim 27, wherein the at least one processor is further configured to determine the CCs in the group based on a capability of the UE, wherein the capability indicates the UE uses a same analog beamformer on CCs in the group. ### Claim 29 An apparatus for wireless communications by a user equipment (UE), comprising: a receiver configured to receive, from a network entity, signaling configuring the UE with a group of component carriers (CCs); and at least one processor configured to detect a failed uplink beam on one of the CCs in the group, report the failed uplink beam to the network entity, and take one or more actions to apply one or more new uplink beams on the CCs in the group. ### Claim 30 (depends on 29) The apparatus of claim 29, wherein the at least one processor is further configured to determine resources impacted by the failed uplink beam, wherein the determined resources comprise at least one of: any resources that use the failed uplink beam across CCs in a CC list or only uplink transmission resources across CCs with a same resource ID as a reported resource with the failed uplink beam.