# US 12,010,568 B2 · Device performance when T312 configured > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,010,568 B2 - Document ID: US12010568B2 - Status: Granted - Kind: B2 - Application number: 17/239,429 - Filed: 2021-04-23 - Published: 2022-10-27 - Granted: 2024-06-11 - Earliest claimed: 2021-04-23 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Bapineedu Chowdary Gummadi; Venkat Rasagna Reddy Komatireddy; Sanjay Kumar - Web page: https://patentgrep.com/patent/US12010568B2 ## CPC - H04W 76/19: Connection re-establishment - H04W 76/38: triggered by timers - H04W 8/183: {Processing at user equipment or user record carrier} - H04W 36/249: {according to timing information} - H04W 68/02: Arrangements for increasing efficiency of notification or paging channel - H04W 36/0085: {Hand-off measurements} - H04W 36/305: {Handover due to radio link failure (control signalling for hand-off failure H04W36/0079)} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract This disclosure provides systems, methods, and devices for wireless communication that support enhanced management of recovery timers in a wireless communication system. In a first aspect, a method of wireless communication includes an apparatus determining whether a recovery timer is currently running, the apparatus being configured for multi-subscriber identity module (SIM) communications including a first subscription and a second subscription. The apparatus is further configured to tune away from the first subscription to the second subscription when the recovery timer is determined not to be currently running, and determine to forego tuning away from the first subscription to the second subscription when the recovery timer is determined to be currently running. Other aspects and features are also claimed and described. ## Claims ### Claim 1 A method of wireless communication performed at a user equipment (UE), the method comprising: determining a status of a recovery timer regarding whether the recovery timer is currently running, wherein the UE is configured for multi-subscriber identity module communications including a first subscription and a second subscription; and executing tuner control for controlling tuning for the multi-subscriber identity module communications in accordance with the status of the recovery timer, wherein the tuner control is configured to control tuning away from the first subscription to the second subscription based on the status of the recovery timer is determined not to be currently running and to control foregoing tuning away from the first subscription to the second subscription and remain tuned to a link of the first subscription based on the status of the recovery timer is determined to be currently running. ### Claim 2 (depends on 1) The method of claim 1, wherein the recovery timer is a T312 timer enabled for the UE. ### Claim 3 (depends on 1) The method of claim 1, wherein tuning away from the first subscription to the second subscription based on the status of the recovery timer is determined not to be currently running includes: tuning away to the second subscription to monitor for a paging message in the second subscription. ### Claim 4 (depends on 1) The method of claim 1, further comprising, when foregoing tuning away from the first subscription to the second subscription based on the status of the recovery timer is determined to be currently running: receiving a handover command from a base station prior to expiration of the recovery timer; and stopping, in response to receiving the handover command from the base station, the recovery timer. ### Claim 5 (depends on 1) The method of claim 1, wherein foregoing tuning away from the first subscription to the second subscription based on the status of the recovery timer is determined to be currently running includes: measuring a value of a channel condition indicator; determining whether the measured value meets a degradation threshold; and foregoing tuning away from the first subscription to the second subscription based on the measured value does not meet the degradation threshold. ### Claim 6 (depends on 5) The method of claim 5, further comprising: tuning away from the first subscription to the second subscription based on the measured value meets the degradation threshold. ### Claim 7 (depends on 5) The method of claim 5, wherein one of: the channel condition indicator is a block error rate (BLER), and wherein determining that the measured value meets the degradation threshold includes determining that the measured value is above a threshold BLER; the channel condition indicator is a signal to noise ratio (SNR), and wherein determining that the measured value meets the degradation threshold includes determining that the measured value is below a threshold SNR; the channel condition indicator is a reference signal received power (RSRP), and wherein determining that the measured value meets the degradation threshold includes determining that the measured value is below a threshold RSRP; and the channel condition indicator is a reference signal received quality (RSRQ), and wherein determining that the measured value meets the degradation threshold includes determining that the measured value is below a threshold RSRQ. ### Claim 8 (depends on 1) The method of claim 1, wherein the recovery timer is triggered by sending a measurement report associated with the recovery timer. ### Claim 9 An apparatus configured for wireless communication comprising: a processing system that includes at least one processor coupled to at least one a memory, the processing system configured to cause the apparatus to: determine a status of a recovery timer regarding whether the recovery timer is currently running, wherein the apparatus is configured for multi-subscriber identity module (SIM) communications including a first subscription and a second subscription; and execute tuner control for controlling tuning for the multi-subscriber identity module communications in accordance with the status of the recovery timer, wherein the tuner control is configured to control tuning away from the first subscription to the second subscription based on the status of the recovery timer is determined not to be currently running and to control foregoing tuning away from the first subscription to the second subscription and remain tuned to a link of the first subscription based on the status of the recovery timer is determined to be currently running. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the recovery timer is a T312 timer enabled for the apparatus. ### Claim 11 (depends on 9) The apparatus of claim 9, wherein tuning away from the first subscription to the second subscription based on the status of the recovery timer is determined not to be currently running includes: tuning away to the second subscription to monitor for a paging message in the second subscription. ### Claim 12 (depends on 9) The apparatus of claim 9, further comprising, when foregoing tuning away from the first subscription to the second subscription based on the status of the recovery timer is determined to be currently running: receiving a handover command from a base station prior to expiration of the recovery timer; and stopping, in response to receiving the handover command from the base station, the recovery timer. ### Claim 13 (depends on 9) The apparatus of claim 9, wherein foregoing tuning away from the first subscription to the second subscription based on the status of the recovery timer is determined to be currently running includes: measuring a value of a channel condition indicator; determining whether the measured value meets a degradation threshold; and foregoing tuning away from the first subscription to the second subscription based on the measured value does not meet the degradation threshold. ### Claim 14 (depends on 13) The apparatus of claim 13, wherein configuration of the processing system further includes configuration to cause the apparatus to: tune away from the first subscription to the second subscription based on the measured value meets the degradation threshold. ### Claim 15 (depends on 13) The apparatus of claim 13, wherein one of: the channel condition indicator is a block error rate (BLER), and wherein determining that the measured value meets the degradation threshold includes determining that the measured value is above a threshold BLER; the channel condition indicator is a signal to noise ratio (SNR), and wherein determining that the measured value meets the degradation threshold includes determining that the measured value is below a threshold SNR; the channel condition indicator is a reference signal received power (RSRP), and wherein determining that the measured value meets the degradation threshold includes determining that the measured value is below a threshold RSRP; and the channel condition indicator is a reference signal received quality (RSRQ), and wherein determining that the measured value meets the degradation threshold includes determining that the measured value is below a threshold RSRQ. ### Claim 16 (depends on 9) The apparatus of claim 9, wherein the recovery timer is triggered by sending a measurement report associated with the recovery timer. ### Claim 17 (depends on 9) The apparatus of claim 9, further comprising: a transceiver configured to transmit a measurement report associated with the recovery timer, and wherein the apparatus is configured as a user equipment (UE).