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US-12621856-B2 - Active time extension for beam failure detection

US12621856B2US 12621856 B2US12621856 B2US 12621856B2US-12621856-B2

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive one or more beam failure detection (BFD) reference signals (RSs) during an active time under discontinuous reception (DRX). The UE may monitor BFD-RSs in an active time extension that is outside the active time for DRX. The UE may receive one or more BFD-RSs during the active time extension. Numerous other aspects are described.

Inventors

  • Shanyu Zhou
  • Jelena Damnjanovic
  • Peter Gaal
  • Tao Luo
  • Juan Montojo

Assignees

  • QUALCOMM INCORPORATED

Dates

Publication Date
20260505
Application Date
20220317

Claims (20)

  1. 1 . A user equipment (UE) for wireless communication, comprising: one or more memories; and one or more processors, coupled to the one or more memories, configured to: receive one or more beam failure detection (BFD) reference signals (RSs) during a discontinuous reception (DRX) active time; transmit, to a network entity, a request that signals use of an active time extension which extends into a DRX off period, the request including a time value for the active time extension; monitor BFD-RSs, in the active time extension, based at least in part on the request and extending the DRX active time into the DRX off period; and receive one or more BFD-RSs during the active time extension.
  2. 2 . The UE of claim 1 , wherein the request requests reception of the one or more BFD-RSs during the active time extension.
  3. 3 . The UE of claim 2 , wherein the request indicates one or more parameters for an aperiodic burst of BFD-RSs to be transmitted during the active time extension.
  4. 4 . The UE of claim 3 , wherein the one or more parameters are based at least in part on one or more of a quality-of-service requirement, a UE capability, or a power threshold.
  5. 5 . The UE of claim 3 , wherein the one or more processors are configured to receive a response that indicates one or more of a periodicity of BFD-RSs within the aperiodic burst, a location of the aperiodic burst, or a validity of the aperiodic burst.
  6. 6 . The UE of claim 1 , wherein the monitoring includes monitoring the BFD-RSs in the active time extension in response to detecting a beam issue or a potential beam issue.
  7. 7 . The UE of claim 6 , wherein the one or more processors are configured to: receive a beam switch indication; and switch to a beam based at least in part on the beam switch indication.
  8. 8 . The UE of claim 1 , wherein the one or more processors are configured to transmit a channel measurement report or an indication of a potential beam quality issue.
  9. 9 . The UE of claim 1 , wherein the one or more processors are configured to transmit a BFD report based at least in part on the one or more BFD-RSs received during the active time extension.
  10. 10 . The UE of claim 9 , wherein the BFD report includes a preferred beam that is based at least in part on the monitoring.
  11. 11 . The UE of claim 1 , wherein the one or more processors are configured to receive a configuration for the active time extension or an activation indication to activate the active time extension for monitoring BFD-RSs, and wherein the one or more processors, to monitor BFD-RSs, are configured to monitor BFD-RSs in the active time extension in response to receiving the configuration or receiving the activation indication.
  12. 12 . The UE of claim 11 , wherein the configuration indicates one or more of a timing of a signal associated with a UE activity during the active time extension, a content of the signal, a resource that the UE may use to transmit the signal, a validity time of the configuration, a value for the active time extension, content of a BFD report, or a periodicity of a BFD report.
  13. 13 . The UE of claim 11 , wherein the one or more processors are configured to receive an indication to switch to another configuration for the active time extension.
  14. 14 . The UE of claim 1 , wherein the one or more processors are configured to: receive a deactivation indication to deactivate the active time extension for monitoring BFD-RSs; and stop the monitoring BFD-RSs in the active time extension.
  15. 15 . The UE of claim 1 , wherein the one or more processors are configured to start an inactivity timer associated with the active time extension.
  16. 16 . The UE of claim 1 , wherein the request includes an active time extension flag that includes at least one of a length, a starting time, or an ending time for the active time extension.
  17. 17 . The UE of claim 1 , wherein the request includes an active time extension flag that includes at least one of a starting time or an ending time for the active time extension.
  18. 18 . A network entity for wireless communication, comprising: one or more memories; and one or more processors, coupled to the one or more memories, configured to: transmit one or more beam failure detection (BFD) reference signals (RSs) during a discontinuous reception (DRX) active time; receive, from a UE, a request that signals use of an active time extension which extends into a DRX off period, the request including a time value for the active time extension; transmit one or more BFD-RSs, during the active time extension, based at least in part on the request and extending the DRX active time into the DRX off period; receive, from the UE, a BFD report that is associated with the one or more BFD-RSs transmitted during the active time extension; and perform an action based at least in part on the BFD report.
  19. 19 . The network entity of claim 18 , wherein the one or more processors, to transmit the one or more BFD-RSs during the active time extension, are configured to transmit the one or more BFD-RSs during the active time extension in response to receiving the request.
  20. 20 . The network entity of claim 19 , wherein the one or more processors, to transmit the one or more BFD-RSs during the active time extension, are configured to transmit the one or more BFD-RSs based at least in part on one or more parameters, indicated by the request, that are associated with a quality-of-service requirement, a user equipment (UE) capability, or a power threshold for the UE.

Description

FIELD OF THE DISCLOSURE Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for extending an active time for beam failure detection. BACKGROUND Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, or the like). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP). A wireless network may include one or more base stations that support communication for a user equipment (UE) or multiple UEs. A UE may communicate with a base station via downlink communications and uplink communications. “Downlink” (or “DL”) refers to a communication link from the base station to the UE, and “uplink” (or “UL”) refers to a communication link from the UE to the base station. The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate on a municipal, national, regional, and/or global level. New Radio (NR), which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the 3GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink, using CP-OFDM and/or single-carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful. SUMMARY Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE). The method may include receiving one or more beam failure detection (BFD) reference signals (RSs) during an active time under discontinuous reception (DRX). The method may include monitoring BFD-RSs in an active time extension that is outside the active time for DRX. The method may include receiving one or more BFD-RSs during the active time extension. Some aspects described herein relate to a method of wireless communication performed by a network entity. The method may include transmitting one or more BFD-RSs during an active time under DRX. The method may include transmitting one or more BFD-RSs during an active time extension that is outside the active time for DRX. The method may include receiving a BFD report that is associated with the one or more BFD-RSs transmitted during the active time extension. The method may include performing an action based at least in part on the BFD report. Some aspects described herein relate to a UE for wireless communication. The UE may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive one or more BFD-RSs during an active time under DRX. The one or more processors may be configured to monitor BFD-RSs in an active time extension that is outside the active time for DRX. The one or more processors may be configured to receive one or more BFD-RSs during the active time extension. Some aspects described herein relate to a network entity for wireless communication. The network entity may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to transmit one or more BFD-RSs during an active time under DRX. The one or more processors may be configured to transmit one or more BFD-RSs during an active time extension that is outside the active time for DRX. The one or more processors may be configured to receive a BFD report that is associated with the one or more BFD-RSs transmitted during the active time extension. The one or more processors may be configured to perform an action based at least in part on the BFD report. Some aspects described herein relate to a non-transitory computer-readable medi