# US 2023/0054878 A1 · Beam Failure Detection and Recovery Procedures with Common Beams > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0054878 A1 - Document ID: US20230054878A1 - Status: Published application - Kind: A1 - Application number: 17/892,576 - Filed: 2022-08-22 - Published: 2023-02-23 - Earliest claimed: 2021-08-20 - Assignees: Ofinno, LLC - Applicants: Ofinno, LLC - Inventors: Kai Xu; Hua Zhou; Esmael Hejazi Dinan; Ali Cagatay Cirik; Hyoungsuk Jeon - Web page: https://patentgrep.com/patent/US20230054878A1 ## CPC - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04B 7/06964: {Re-selection of one or more beams after beam failure} - H04B 17/309: Measuring or estimating channel quality parameters - H04L 5/0023: {Time-frequency-space} - H04W 52/50: at the moment of starting communication in a multiple access environment - H04W 76/19: Connection re-establishment - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION ## Abstract A method may include incrementing, by a wireless device, a beam failure detection (BFD) instance counter based on detection of a first beam failure of a first reference signal (RS). The method may include resetting the BFD instance counter based on an indication of a transmission configuration indicator (TCI) state applicable for receptions of physical downlink channels, wherein the TCI state is associated with a second RS. The method may include transmitting a beam failure recovery request based on the BFD instance counter being greater than a threshold, wherein the BFD instance counter is incremented based on detection of a second beam failure of the second RS. ## Claims ### Claim 1 A method comprising: incrementing, by a wireless device, a beam failure detection (BFD) instance counter based on detection of a first beam failure of a first reference signal (RS); resetting the BFD instance counter based on an indication of a transmission configuration indicator (TCI) state applicable for receptions of physical downlink channels, wherein the TCI state is associated with a second RS; and transmitting a beam failure recovery request based on the BFD instance counter being greater than a threshold, wherein the BFD instance counter is incremented based on detection of a second beam failure of the second RS. ### Claim 2 (depends on 1) The method of claim 1, further comprising performing a BFD procedure based on a measurement of the first RS. ### Claim 3 (depends on 1) The method of claim 1 further comprising receiving a downlink control command comprising the indication of the TCI state. ### Claim 4 (depends on 1) The method of claim 1, wherein the first RS is associated with a second TCI state of control resource set (CORESET). ### Claim 5 (depends on 4) The method of claim 4, wherein the first RS is a quasi-colocation RS of the second TCI state. ### Claim 6 (depends on 1) The method of claim 1, wherein the incrementing the BFD instance counter comprises detecting a beam failure instance based on measurement of the first RS. ### Claim 7 (depends on 6) The method of claim 6, wherein the detecting the beam failure instance is further based on a channel quality of the first RS being equal to or less than a BFD threshold. ### Claim 8 (depends on 1) The method of claim 1, wherein the TCI state comprises a joint TCI state or a separate TCI state. ### Claim 9 (depends on 1) The method of claim 1, further comprising switching from the first RS to the second RS for performing a BFD procedure based on the second RS. ### Claim 10 (depends on 1) The method of claim 1, further comprising: determining a measurement gap based on the indication of the TCI state; and performing, in response to the determining, a BFD procedure based on the second RS. ### Claim 11 A wireless device comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the wireless device to: increment a beam failure detection (BFD) instance counter based on detection of a first beam failure of a first reference signal (RS); reset the BFD instance counter based on an indication of a transmission configuration indicator (TCI) state applicable for receptions of physical downlink channels, wherein the TCI state is associated with a second RS; and transmit a beam failure recovery request based on the BFD instance counter being greater than a threshold, wherein the BFD instance counter is incremented based on detection of a second beam failure of the second RS. ### Claim 12 (depends on 11) The wireless device of claim 11, wherein the instructions further cause the wireless device to perform a BFD procedure based on a measurement of the first RS. ### Claim 13 (depends on 11) The wireless device of claim 11 wherein the instructions further cause the wireless device to receive a downlink control command comprising the indication of the TCI state. ### Claim 14 (depends on 11) The wireless device of claim 11, wherein the first RS is associated with a second TCI state of control resource set (CORESET). ### Claim 15 (depends on 14) The wireless device of claim 14, wherein the first RS is a quasi-colocation RS of the second TCI state. ### Claim 16 (depends on 11) The wireless device of claim 11, wherein the instructions further cause the wireless device to detect a beam failure instance based on measurement of the first RS. ### Claim 17 (depends on 16) The wireless device of claim 16, wherein the beam failure instance is detected further based on a channel quality of the first RS being equal to or less than a BFD threshold. ### Claim 18 (depends on 11) The wireless device of claim 11, wherein the TCI state comprises a joint TCI state or a separate TCI state. ### Claim 19 (depends on 11) The wireless device of claim 11, further comprising wherein the instructions further cause the wireless device to switch from the first RS to the second RS for performing a BFD procedure based on the second RS. ### Claim 20 A system comprising: a base station; and a wireless device comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the wireless device to: increment a beam failure detection (BFD) instance counter based on detection of a first beam failure of a first reference signal (RS); reset the BFD instance counter based on an indication of a transmission configuration indicator (TCI) state applicable for receptions of physical downlink channels, wherein the TCI state is associated with a second RS; and transmit a beam failure recovery request based on the BFD instance counter being greater than a threshold, wherein the BFD instance counter is incremented based on detection of a second beam failure of the second RS.