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US-12628015-B2 - Method and apparatus for dynamically updating beam failure detection resource of TRP in wireless communication system

US12628015B2US 12628015 B2US12628015 B2US 12628015B2US-12628015-B2

Abstract

A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes receiving, from a base station (BS) via a radio resource control (RRC) message, configuration information including information on a first beam failure detection (BFD)-reference signal (RS) set and information on a second BFD-RS set, wherein each of the first BFD-RS set and the second BFD-RS set includes a plurality of BFD-RS resources, receiving, from the BS, medium access control (MAC) control element (CE) including information for indicating a first at least one BFD-RS resource included in the first BFD-RS set and a second at least one BFD-RS resource included in the second BFD-RS set, and identifying one or more activated BFD-RSs based on the MAC CE.

Inventors

  • Seungri Jin
  • Anil Agiwal

Assignees

  • SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date
20260512
Application Date
20230407
Priority Date
20220412

Claims (14)

  1. 1 . A user equipment (UE) in a wireless communication system, the UE comprising: a transceiver; and a controller coupled to the transceiver, and configured to: receive, from a base station (BS), a first radio resource control (RRC) message configuring a first beam failure detection-reference signal (BFD-RS) set and a second BFD-RS set, wherein each of the first BFD-RS set and the second BFD-RS set includes a plurality of BFD-RS resources, and receive, from the BS, a medium access control (MAC) control element (CE) for activating or deactivating one or more BFD-RS resources among the plurality of BFD-RS resources, wherein the MAC CE includes a first BFD-RS identifier (ID) indicating a first BFD-RS resource from the first BFD-RS set and a second BFD-RS ID indicating a second BFD-RS resource from the second BFD-RS set, wherein the MAC CE further includes a 1-bit indicator indicating whether the MAC CE further includes a third BFD-RS ID indicating a third resource from the first BFD-RS set or the second BFD-RS set, and wherein the first BFD-RS set is associated with a first cell identity and the second BFD-RS set is associated with a second cell identity different from the first cell identity.
  2. 2 . The UE of claim 1 , wherein the controller is further configured to transmit, to the BS, capability information indicating whether the UE supports BFD for multi transmission reception points (TRPs), and wherein the capability information includes information indicating a maximum number of BFD-RS resource per BFD-RS set supported by the UE.
  3. 3 . The UE of claim 1 , wherein each BFD-RS resource among the plurality of BFD-RS resources corresponds to a synchronization signal block (SSB) index or channel state information-reference signal (CSI-RS) index.
  4. 4 . The UE of claim 1 , wherein the controller is further configured to receive, from the BS, a second RRC message configuring at least one candidate beam RS list associated with the first BFD-RS set or the second BFD-RS set.
  5. 5 . A base station (BS) in a wireless communication system, the BS comprising: a transceiver; and a controller coupled to the transceiver, and configured to: transmit, to a user equipment (UE), a first radio resource control (RRC) message configuring a first beam failure detection-reference signal (BFD-RS) set and a second BFD-RS set, wherein each of the first BFD-RS set and the second BFD-RS set includes a plurality of BFD-RS resources, and transmit, to the UE, a medium access control (MAC) control element (CE) for activating or deactivating one or more BFD-RS resources among the plurality of BFD-RS resources, wherein the MAC CE includes a first BFD-RS identifier (ID) indicating a first BFD-RS resource from the first BFD-RS set and a second BFD-RS ID indicating a second BFD-RS resource from the second BFD-RS set, wherein the MAC CE further includes a 1-bit indicator indicating whether the MAC CE further includes a third BFD-RS ID indicating a third resource from the first BFD-RS set or the second BFD-RS set, and wherein the first BFD-RS set is associated with a first cell identity and the second BFD-RS set is associated with a second cell identity different from the first cell identity.
  6. 6 . The BS of claim 5 , wherein the controller is further configured to receive, from the UE, capability information indicating whether the UE supports BFD for multi transmission reception points (TRPs), and wherein the capability information includes information indicating a maximum number of BFD-RS resource per BFD-RS set supported by the UE.
  7. 7 . The BS of claim 5 , wherein each BFD-RS resource among the plurality of BFD-RS resources corresponds to a synchronization signal block (SSB) index or channel state information-reference signal (CSI-RS) index.
  8. 8 . The BS of claim 5 , wherein the controller is further configured to transmit, to the UE, a second RRC message configuring at least one candidate beam RS list associated with the first BFD-RS set or the second BFD-RS set.
  9. 9 . A method performed by a user equipment (UE) in a wireless communication system, the method comprising: receiving, from a base station (BS), a first radio resource control (RRC) message configuring a first beam failure detection-reference signal (BFD-RS) set and a second BFD-RS set, wherein each of the first BFD-RS set and the second BFD-RS set includes a plurality of BFD-RS resources; and receiving, from the BS, a medium access control (MAC) control element (CE) for activating or deactivating one or more BFD-RS resources among the plurality of BFD-RS resources, wherein the MAC CE includes a first BFD-RS identifier (ID) indicating a first BFD-RS resource from the first BFD-RS set and a second BFD-RS ID indicating a second BFD-RS resource from the second BFD-RS set, wherein the MAC CE further includes a 1-bit indicator indicating whether the MAC CE further includes a third BFD-RS ID indicating a third resource from the first BFD-RS set or the second BFD-RS set, and wherein the first BFD-RS set is associated with a first cell identity and the second BFD-RS set is associated with a second cell identity different from the first cell identity.
  10. 10 . The method of claim 9 , further comprising: transmitting, to the BS, capability information indicating whether the UE supports BFD for multi transmission reception points (TRPs), wherein the capability information includes information indicating a maximum number of BFD-RS resource per BFD-RS set supported by the UE, and wherein each BFD-RS resource among the plurality of BFD-RS resources corresponds to a synchronization signal block (SSB) index or channel state information-reference signal (CSI-RS) index.
  11. 11 . The method of claim 9 , further comprising: receiving, from the BS, a second RRC message configuring at least one candidate beam RS list associated with the first BFD-RS set or the second BFD-RS set.
  12. 12 . A method performed by a base station (BS) in a wireless communication system, the method comprising: transmitting, to a user equipment (UE), a first radio resource control (RRC) message configuring a first beam failure detection-reference signal (BFD-RS) set and a second BFD-RS set, wherein each of the first BFD-RS set and the second BFD-RS set includes a plurality of BFD-RS resources; and transmitting, to the UE, a medium access control (MAC) control element (CE) for activating or deactivating one or more BFD-RS resources among the plurality of BFD-RS resources, wherein the MAC CE includes a first BFD-RS identifier (ID) indicating a first BFD-RS resource from the first BFD-RS set and a second BFD-RS ID indicating a second BFD-RS resource from the second BFD-RS set, wherein the MAC CE further includes a 1-bit indicator indicating whether the MAC CE further includes a third BFD-RS ID indicating a third resource from the first BFD-RS set or the second BFD-RS set, and wherein the first BFD-RS set is associated with a first cell identity and the second BFD-RS set is associated with a second cell identity different from the first cell identity.
  13. 13 . The method of claim 12 , further comprising: receiving, from the UE, capability information indicating whether the UE supports BFD for multi transmission reception points (TRPs), wherein the capability information includes information indicating a maximum number of BFD-RS resource per BFD-RS set supported by the UE, and wherein each BFD-RS resource among the plurality of BFD-RS resources corresponds to a synchronization signal block (SSB) index or channel state information-reference signal (CSI-RS) index.
  14. 14 . The method of claim 12 , further comprising: transmitting, to the UE, a second RRC message configuring at least one candidate beam RS list associated with the first BFD-RS set or the second BFD-RS set.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application is based on and claims priority under 35 U.S.C. § 119(a) of a Korean patent application number 10-2022-0045355, filed on Apr. 12, 2022, in the Korean Intellectual Property Office, the disclosure of which is incorporated by reference herein in its entirety. BACKGROUND 1. Field The disclosure relates to a method and apparatus for dynamically updating a beam failure detection resource of a Transmission Reception Point (TRP) in a wireless communication system. More particularly, the disclosure relates to a method and apparatus for configuring information on a beam resource of a plurality of TRPs in a wireless communication system, and dynamically updating a beam failure detection resource based on this. 2. Description of Related Art 5th generation (5G) mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in “Sub 6 GHz” bands such as 3.5 GHz, but also in “Above 6 GHz” bands referred to as millimeter-wave (mmWave) including 28 GHz and 39 GHz. In addition, it has been considered to implement 6th generation (6G) mobile communication technologies (referred to as Beyond 5G systems) in terahertz (THz) bands (for example, 95 GHz to 3 THz bands) in order to accomplish transmission rates fifty times faster than 5G mobile communication technologies and ultra-low latencies one-tenth of 5G mobile communication technologies. At the beginning of the development of 5G mobile communication technologies, in order to support services and to satisfy performance requirements in connection with enhanced Mobile BroadBand (eMBB), Ultra Reliable Low Latency Communications (URLLC), and massive Machine-Type Communications (mMTC), there has been ongoing standardization regarding beamforming and massive Multiple-Input and Multiple-Output (MIMO) for mitigating radio-wave path loss and increasing radio-wave transmission distances in mmWave, supporting numerologies (for example, operating multiple subcarrier spacings) for efficiently utilizing mmWave resources and dynamic operation of slot formats, initial access technologies for supporting multi-beam transmission and broadbands, definition and operation of BandWidth Part (BWP), new channel coding methods such as a Low Density Parity Check (LDPC) code for large amount of data transmission and a polar code for highly reliable transmission of control information, L2 pre-processing, and network slicing for providing a dedicated network specialized to a specific service. Currently, there are ongoing discussions regarding improvement and performance enhancement of initial 5G mobile communication technologies in view of services to be supported by 5G mobile communication technologies, and there has been physical layer standardization regarding technologies such as Vehicle-to-everything (V2X) for aiding driving determination by autonomous vehicles based on information regarding positions and states of vehicles transmitted by the vehicles and for enhancing user convenience, New Radio Unlicensed (NR-U) aimed at system operations conforming to various regulation-related requirements in unlicensed bands, NR User Equipment (UE) Power Saving, Non-Terrestrial Network (NTN) which is UE-satellite direct communication for providing coverage in an area in which communication with terrestrial networks is unavailable, and positioning. Moreover, there has been ongoing standardization in air interface architecture/protocol regarding technologies such as Industrial Internet of Things (IIoT) for supporting new services through interworking and convergence with other industries, Integrated Access and Backhaul (IAB) for providing a node for network service area expansion by supporting a wireless backhaul link and an access link in an integrated manner, mobility enhancement including conditional handover and Dual Active Protocol Stack (DAPS) handover, and two-step random access for simplifying random access procedures (2-step Random-Access Channel (RACH) for NR). There also has been ongoing standardization in system architecture/service regarding a 5G baseline architecture (for example, service based architecture or service based interface) for combining Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) for receiving services based on UE positions. As 5G mobile communication systems are commercialized, connected devices that have been exponentially increasing will be connected to communication networks, and it is accordingly expected that enhanced functions and performances of 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research is scheduled in connection with eXtended Reality (XR) for efficiently supporting Augmented Reality (AR), Virtual Reality (VR), Mixed Reality (MR) and the like, 5G performance improvement an