# US 2021/0243630 A1 · Event triggered uplink beam report > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0243630 A1 - Document ID: US20210243630A1 - Status: Published application - Kind: A1 - Application number: 17/098,065 - Filed: 2020-11-13 - 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/US20210243630A1 ## CPC - H04B 7/063: {Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection} - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04L 1/1614: {using bitmaps} - H04W 52/245: {taking into account received signal strength} - H04W 52/365: {Power headroom reporting} - H04W 52/42: in systems with time, space, frequency or polarisation diversity - H04W 72/046: {the resource being in the space domain, e.g. beams} - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04W 80/02: Data link layer protocols - H04L 1/1671: {the supervisory signal being transmitted together with control information} - 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 A user equipment (UE) determines an occurrence of an event based on one or more of criteria determined by the UE or a configuration from a base station, the event triggering an uplink beam report for the UE. Then, the UE sends the uplink beam report to a base station in response to determining the occurrence of the event. A base station configures a UE for an event that triggers an uplink beam report from the UE and receives the uplink beam report from the UE based on an occurrence of the event. ## Claims ### Claim 1 A method of wireless communication at a user equipment (UE), comprising: determining, at the UE, an occurrence of an event based on one or more of criteria determined by the UE or a configuration from a base station, the event triggering an uplink beam report for the UE; and sending the uplink beam report to the base station in response to determining the occurrence of the event. ### Claim 2 (depends on 1) The method of claim 1, wherein the determining the occurrence of the event is based on the criteria determined by the UE. ### Claim 3 (depends on 1) The method of claim 1, further comprising: receiving the configuration from the base station for the event, wherein the determining the occurrence of the event is based on the configuration from the base station. ### Claim 4 (depends on 1) The method of claim 1, wherein the event comprises a change in a set of one or more beams, wherein the determining the occurrence comprises identifying the change in the set of the one or more beams. ### Claim 5 (depends on 4) The method of claim 4, wherein the set of one or more beams includes a first number of beams having highest beam measurements among a larger number of beams measured by the UE. ### Claim 6 (depends on 4) The method of claim 4, wherein the uplink beam report comprises a beam quality metric for each beam reported in the uplink beam report. ### Claim 7 (depends on 6) The method of claim 6, wherein the beam quality metric comprises at least one of an available power headroom or a measurement based on an uplink reference signal received power (RSRP). ### Claim 8 (depends on 6) The method of claim 6, further comprising: receiving a beam quality metric configuration from the base station for the beam quality metric. ### Claim 9 (depends on 1) The method of claim 1, wherein the uplink beam report indicates whether each uplink beam in the uplink beam report suffers beam failure. ### Claim 10 (depends on 9) The method of claim 9, wherein the uplink beam report includes a bitmap for each configured uplink beam of the UE. ### Claim 11 (depends on 9) The method of claim 9, further comprising: receiving a beam failure configuration from the base station for determining the beam failure. ### Claim 12 (depends on 1) The method of claim 1, wherein the uplink beam report identifies each beam using an uplink beam identifier (ID). ### Claim 13 (depends on 12) The method of claim 12, wherein the uplink beam ID is based on at least one of a spatial relation information identifier, an uplink transmission configuration indication (TCI) state ID, or an uplink beam indication reference signal ID. ### Claim 14 (depends on 1) The method of claim 1, wherein the uplink beam report is transmitted in a physical uplink control channel (PUCCH), a medium access control-control element (MAC-CE), a scheduling request, or an uplink random access transmission. ### Claim 15 An apparatus for wireless communication at a user equipment (UE), comprising: a memory; and at least one processor coupled to the memory and configured to: determine, at the UE, an occurrence of an event based on one or more of criteria determined by the UE or a configuration from a base station, the event triggering an uplink beam report for the UE; and send the uplink beam report to the base station in response to determining the occurrence of the event. ### Claim 16 (depends on 15) The apparatus of claim 15, wherein the at least one processor is configured to determine the occurrence of the event based on the criteria determined by the UE. ### Claim 17 (depends on 15) The apparatus of claim 15, wherein the at least one processor is further configured to: receive the configuration from the base station for the event, wherein the determining the occurrence of the event is based on the configuration from the base station. ### Claim 18 A method of wireless communication at a base station, comprising: configuring a user equipment (UE) for an event that triggers an uplink beam report from the UE; and receiving the uplink beam report from the UE based on an occurrence of the event. ### Claim 19 (depends on 18) The method of claim 18, wherein the event comprises a change in a set of one or more beams. ### Claim 20 (depends on 19) The method of claim 19, wherein the set of one or more beams includes a first number of beams having highest beam measurements among a larger number of beams measured by the UE. ### Claim 21 (depends on 19) The method of claim 19, wherein the uplink beam report comprises a beam quality metric for each beam reported in the uplink beam report. ### Claim 22 (depends on 21) The method of claim 21, wherein the beam quality metric comprises at least one of an available power headroom or a measurement based on an uplink reference signal received power (RSRP). ### Claim 23 (depends on 21) The method of claim 21, further comprising: configuring the UE for the beam quality metric. ### Claim 24 (depends on 18) The method of claim 18, wherein the uplink beam report indicates whether an uplink beam in the uplink beam report suffers beam failure. ### Claim 25 (depends on 24) The method of claim 24, wherein the uplink beam report includes a bitmap for each configured uplink beam of the UE. ### Claim 26 (depends on 24) The method of claim 24, further comprising: configuring the UE with a metric for determining the beam failure. ### Claim 27 (depends on 18) The method of claim 18, wherein the uplink beam report identifies each beam using an uplink beam identifier (ID). ### Claim 28 (depends on 27) The method of claim 27, wherein the uplink beam ID is based on at least one of a spatial relation information identifier, an uplink transmission configuration indication (TCI) state ID, or an uplink beam indication reference signal ID. ### Claim 29 (depends on 18) The method of claim 18, wherein the uplink beam report is received in a physical uplink control channel (PUCCH), a medium access control-control element (MAC-CE), a scheduling request, or an uplink random access transmission. ### Claim 30 An apparatus for wireless communication at a base station, comprising: a memory; and at least one processor coupled to the memory and configured to: configure a user equipment (UE) for an event that triggers an uplink beam report from the UE; and receive the uplink beam report from the UE based on an occurrence of the event.