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EP-4742803-A1 - METHOD AND APPARATUS FOR RECOVERING BEAM FAILURE

EP4742803A1EP 4742803 A1EP4742803 A1EP 4742803A1EP-4742803-A1

Abstract

Provided are a method whereby a first device communicates wirelessly, and a device supporting same. The first device may select a beam for communication with a second device, detect a beam failure for the beam, and trigger a beam failure recovery procedure on the basis of the detection of the beam failure.

Inventors

  • PARK, GIWON
  • LEE, SEUNGMIN
  • BACK, SEOYOUNG

Assignees

  • LG Electronics Inc.

Dates

Publication Date
20260513
Application Date
20240708

Claims (20)

  1. A method for performing wireless communication by a first device, the method comprising: selecting a beam for communication with a second device; detecting a beam failure for the beam; and triggering a beam failure recovery procedure based on the beam failure being detected, wherein, based on at least one resource pool being reconfigured for the first device, the triggered beam failure recovery procedure is canceled.
  2. The method of claim 1, wherein the at least one resource pool includes a resource for which the beam failure recovery procedure is triggered and not canceled.
  3. The method of claim 1, wherein the beam failure is detected based on a reception of a beam failure instance.
  4. The method of claim 1, wherein the beam failure is detected based on a number of beam failure instances being greater than or equal to a threshold.
  5. The method of claim 1, wherein, based on the trigger of the beam failure recovery procedure, a beam failure recovery timer is started by the first device.
  6. The method of claim 1, wherein, based on transmitting a medium access control (MAC) control element (CE) for requesting beam failure recovery or a MAC CE representing the trigger of the beam failure recovery procedure to a base station or the second device, a beam failure recovery timer is started by the first device.
  7. The method of claim 1, wherein, based on selection or reselection of a resource pool by the first device, the triggered beam failure recovery procedure is canceled.
  8. The method of claim 7, wherein the resource pool is a resource pool in which the beam failure recovery procedure or a beam failure instance does not occur.
  9. The method of claim 1, wherein, based on a parameter related to the beam failure recovery procedure being reconfigured for the first device, the triggered beam failure recovery procedure is canceled.
  10. The method of claim 1, wherein, based on that a MAC reset related to a PC5 connection or a unicast connection between the first device and the second device occurs, the triggered beam failure recovery procedure is canceled.
  11. The method of claim 1, wherein, based on a change in a radio resource control (RRC) mode of the first device, the triggered beam failure recovery procedure is canceled.
  12. The method of claim 1, wherein, based on a change in a resource allocation mode of the first device, the triggered beam failure recovery procedure is canceled.
  13. The method of claim 1, wherein, based on an expiration of a beam failure recovery timer, the triggered beam failure recovery procedure is canceled.
  14. A first device adapted to perform wireless communication, the first device comprising: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions that, based on being executed by the at least one processor, cause the first device to perform operations comprising: selecting a beam for communication with a second device; detecting a beam failure for the beam; and triggering a beam failure recovery procedure based on the beam failure being detected, wherein, based on at least one resource pool being reconfigured for the first device, the triggered beam failure recovery procedure is canceled.
  15. A processing device adapted to control a first device, the processing device comprising: at least one processor; and at least one memory connected to the at least one processor and storing instructions that, based on being executed by the at least one processor, cause the first device to perform operations comprising: selecting a beam for communication with a second device; detecting a beam failure for the beam; and triggering a beam failure recovery procedure based on the beam failure being detected, wherein, based on at least one resource pool being reconfigured for the first device, the triggered beam failure recovery procedure is canceled.
  16. A non-transitory computer-readable storage medium storing instructions that, when executed, cause a first device to perform operations comprising: selecting a beam for communication with a second device; detecting a beam failure for the beam; and triggering a beam failure recovery procedure based on the beam failure being detected, wherein, based on at least one resource pool being reconfigured for the first device, the triggered beam failure recovery procedure is canceled.
  17. A method for performing wireless communication by a second device, the method comprising: selecting a beam for communication with a first device; and performing communication with the first device based on the beam, wherein a beam failure recovery procedure is triggered based on detection of a beam failure for the beam, and wherein the triggered beam failure recovery procedure is canceled based on a reconfiguration of at least one resource pool.
  18. A second device adapted to perform wireless communication, the second device comprising: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions that, based on being executed by the at least one processor, cause the second device to perform operations comprising: selecting a beam for communication with a first device; and performing communication with the first device based on the beam, wherein a beam failure recovery procedure is triggered based on detection of a beam failure for the beam, and wherein the triggered beam failure recovery procedure is canceled based on a reconfiguration of at least one resource pool.
  19. A processing device adapted to control a second device, the processing device comprising: at least one processor; and at least one memory connected to the at least one processor and storing instructions that, based on being executed by the at least one processor, cause the second device to perform operations comprising: selecting a beam for communication with a first device; and performing communication with the first device based on the beam, wherein a beam failure recovery procedure is triggered based on detection of a beam failure for the beam, and wherein the triggered beam failure recovery procedure is canceled based on a reconfiguration of at least one resource pool.
  20. A non-transitory computer-readable storage medium storing instructions that, when executed, cause a second device to perform operations comprising: selecting a beam for communication with a first device; and performing communication with the first device based on the beam, wherein a beam failure recovery procedure is triggered based on detection of a beam failure for the beam, and wherein the triggered beam failure recovery procedure is canceled based on a reconfiguration of at least one resource pool.

Description

TECHNICAL FIELD This disclosure relates to a wireless communication system. BACKGROUND ART 5G NR is a successor technology to long term evolution (LTE) and is a new clean-slate mobile communication system with characteristics such as high performance, low latency, high availability, etc. 5G NR may utilize all available spectrum resources, including low-frequency bands below 1 GHz, mid-frequency bands between 1 GHz and 10 GHz, high-frequency (millimeter wave) bands above 24 GHz, etc. A 6G (wireless communication) system has purposes such as (i) very high data rate per device, (ii) a very large number of connected devices, (iii) global connectivity, (iv) very low latency, (v) decrease in energy consumption of battery-free IoT devices, (vi) ultra-reliable connectivity, (vii) connected intelligence with machine learning capacity, etc. The vision of the 6G system may include four aspects such as intelligent connectivity, deep connectivity, holographic connectivity and ubiquitous connectivity, and the 6G system may satisfy the requirements shown in Table 1 below. That is, Table 1 shows the requirements of the 6G system. [Table 1]Per device peak data rate1 TbpsE2E latency1 msMaximum spectral efficiency100bps/HzMobility supportUp to 1000km/hrSatellite integrationFullyAIFullyAutonomous vehicleFullyXRFullyHaptic CommunicationFully DISCLOSURE TECHNICAL SOLUTION Based on an embodiment of the present disclosure, a method for performing wireless communication by a first device may be provided. For example, the method may comprise: selecting a beam for communication with a second device; detecting a beam failure for the beam; and triggering a beam failure recovery procedure based on the beam failure being detected. Based on an embodiment of the present disclosure, a first device adapted to perform wireless communication may be provided. For example, the first device may comprise: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, the instructions, based on being executed by the at least one processor, may cause the first device to perform operations comprising: selecting a beam for communication with a second device; detecting a beam failure for the beam; and triggering a beam failure recovery procedure based on the beam failure being detected. Based on an embodiment of the present disclosure, a processing device adapted to control a first device may be provided. For example, the processing device may comprise: at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, the instructions, based on being executed by the at least one processor, may cause the first device to perform operations comprising: selecting a beam for communication with a second device; detecting a beam failure for the beam; and triggering a beam failure recovery procedure based on the beam failure being detected. Based on an embodiment of the present disclosure, a non-transitory computer-readable storage medium storing instructions may be provided. For example, the instructions, when executed, may cause a first device to perform operations comprising: selecting a beam for communication with a second device; detecting a beam failure for the beam; and triggering a beam failure recovery procedure based on the beam failure being detected. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a communication structure providable in a 6G system, based on an embodiment of the present disclosure.FIG. 2 shows an electromagnetic spectrum, based on an embodiment of the present disclosure.FIG. 3 shows an example of an NTN typical scenario based on a transparent payload, based on an embodiment of the present disclosure. FIG. 4 shows an example of an NTN typical scenario based on a regenerative payload, based on an embodiment of the present disclosure.FIG. 5 shows an example of a sensing operation, based on an embodiment of the present disclosure.FIG. 6 shows a structure of a slot of a frame, based on an embodiment of the present disclosure.FIG. 7 shows an example of a BWP, based on an embodiment of the present disclosure.FIG. 8 shows a procedure of performing V2X or SL communication by a UE based on a resource allocation mode, based on an embodiment of the present disclosure.FIG. 9 shows beam management, based on an embodiment of the present disclosure.FIG. 10 shows a beam recovery procedure, based on an embodiment of the present disclosure.FIG. 11 shows a method for a first device to perform wireless communication, based on an embodiment of the present disclosure.] FIG. 12 shows a method for a second device to perform wireless communication, based on an embodiment of the present disclosure.FIG. 13 shows a communication system 1, based on an embodiment of the present disclosure.FIG. 14 shows wireless devices, based on an embodiment of the present disclosure.FIG. 15 shows a signal process circuit for a tr