Apparatus, system, computer program product, and method for managing beam failure detection

Abstract

Provided are wireless communication systems, devices, methods, and computer-readable media having beam failure detection capabilities or functions related to beam failure detection capabilities.SOLUTION: The method includes receiving, via radio resource control (RRC) signaling, configuration information for a plurality of reference signals including a first beam failure detection (BFD)-reference signal (BFD-RS) set and a second BFD-RS set for beam failure detection (BFD); Receiving an indication of activation of a first BFD-RS in a first BFD-RS set and activation of a second BFD-RS in a second BFD-RS set, detecting a beam failure, determining a candidate beam based on a beam failure recovery configuration, and transmitting a beam failure recovery message to a network node indicating the determined candidate beam.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application is a continuation of U.S. Provisional Patent Application No. 62 / 790,952, filed January 10, 2019. No. 60 / 699,997, filed on Oct. 1, 2003, the entire contents of which are incorporated herein by reference.

[0002] The present disclosure relates generally to wireless communications, and more particularly to beam obstruction, particularly for multiple cells. Wireless communication systems having functionality related to beam obstruction detection capability or beam obstruction detection capability , devices, methods, and computer-readable media. [Background technology]

[0003] The "Background" section provided herein is provided to generally present the context of the present disclosure. The presently named inventions to the extent described in this Background section The work of the inventors and aspects of the disclosure that may not be admitted as prior art at the time of filing are No admission is expressly or impliedly made as prior art to the present application.

[0004] Beam Failure Detection (BFD), New Beam Identification Negative Identification (NBI), and Beam Failure Recovery (B FR) is a user equipment (UE) that aims to maintain a communication link between the network and the UE. These are User Equipment (UE) procedures. By following these procedures, the UE D, identify new candidate beams through NBI, and generate new beams through BFR. By presenting the network with a signal, it is possible to recover from beam failures. As considered in the standard, the BFD, NBI, and BFR procedures are performed by the Special Cell (Spec ial Cell: SpCell), i.e., supported by PCell or PSCell However, it is not supported on secondary cells (SCells).

[0005] In some cases, "BFR" is used to refer to the entire Beam Fault Detection / Recovery Therefore, it includes BFD, NBI, and BFR. In some cases, "link recovery" is , all or part of beam fault detection / recovery, e.g., BFD, NBI and / or BFR is used to represent

[0006] The UE uses the IE RadioLinkMonitoringConfig to Downlink (DL) Bandwidth Portion (BWP) is a term used in 5G to selected from a contiguous subset of resource blocks for a given number of carriers describes a contiguous set of physical resource blocks, each of which is a carrier frequency bandwidth Up to two BFD-Reference Signals (used to characterize the quantity Radio Resource Control (RRC) signaling using BFD-RS BFD-RS can be configured explicitly by the radio It may be used for link quality measurement. BFD-RS supports up to two RS parameters, by setting "beamFailure" or "both" , Radio Link Monitoring Reference Signals (Radio Link Monitoring Reference Signals: RLM-RS) can be set to the same list as RadioLinkMonito. If BFD-RS is not explicitly configured in ringConfig, as explained further below As will be explained, BFD-RS is implicit.

[0007] maxNrofFailureDetectionResources is 10 The maximum two RS limit in BFD is instead imposed by Medium Access Control (MEC). Control (MAC) protocol standard 3GPP Technical Specification TS 38.213 The description of conventional BFD is given in the L1 part of TS 38.213, and the whole Typical BFD, NBI, and BFR procedures are described in 3GPP Technical Specification 38.321 , V15.3.0, September 2018, is primarily managed by the MAC layer. are.

[0008] The UE can configure RRC with a set of SCells. The SCell is activated for the UE through a MAC CE indication, and the SCell is For example, deactivation via MAC CE indication, sCellDeactivationT Inactivity can occur to the UE in a number of ways, such as expiry of the imer timer or during handover. In contrast, SpCells are always activated. Summary of the Invention

[0009] Support for BFD for groups of cells, as recognized by the inventors The capabilities of different UEs vary from UE to UE, and even when in full battery or rover mode. It varies depending on the UE state, such as battery status. The UE supports a large number of cells for BFD. Metrics of the capabilities to support (typically UE Capabilities, or UE BFD Capabilities, or UE BFD capability parameters) to the network (e.g., base station, or g-node) B, gNB), but the UE according to the teachings of the present disclosure performs BFD. A large number of cells (or cells) in a group of cells that are responsible for Similarly, it is possible to adapt the number of BFD-RS or BWP Furthermore, the UE's capability to perform BFD for a group of cells can be The network configuration of the cell associated with the execution or the number of BFD-RS In this case, the UE according to the present disclosure may, for example, determine the number of cells in charge of BFD or the number of BFD-RSs. The number can be reduced to a lower number that is within the capabilities of the UE.

[0010] In some embodiments, the processing circuitry in the UE determines which cell(s) the UE is connected to. ), BWP(s) and / or BFD-RS (outside of configuration) to run BFD. Selection rules or procedures to reduce BFD requirements at the UE by determining whether In this way, the UE can select the cells that perform BFD without exceeding the UE capabilities. and / or adapt the BWP and / or reference signals of the cells running BFD. It is equipped to do so.

[0011] Alternatively, the UE may receive guidance provided by the network, such as a serving base station. Based on the number of cells in charge of BFD implementation, the base station adapts the number of cells in charge of BFD implementation. The UE capability information reported by E is used to determine the number of cells, etc., so as not to exceed the UE capability. and / or how to adjust the BWP and / or reference signals of cells running BFD. Various forms of command signals are provided to instruct the UE to As is recognized, the demand for BFD (or more generally network configuration) ) will likely expand well beyond the one or two cells that a UE may serve today. It could expand significantly. For example, in some areas, there could be perhaps 20 or 30 secondary cells. , the UE may be included in a cell group responsible for running BFD. Such high processing demands , which may far exceed the processing capabilities of the UE, and as described herein, indicates the number of cells in the cell group assigned to the UE and / or BFD-related requests. This coordination between the UE and the base station is achieved through RRC configuration, MAC signalling, Various signaling and This may be achieved using protocol mechanisms.

[0012] This Summary of the Invention is presented in a simplified form that is further described in the Detailed Description below. This Summary is provided to introduce a selection of concepts in a format that is consistent with the claimed subject matter. It is not intended to identify key or essential features of the subject matter, and Nor is it intended to be used to limit the scope of the claimed subject matter. Furthermore, claimed subject matter may be derived from any or all of the methods described anywhere in this disclosure. Not bound by restrictions that solve all disadvantages. [Brief explanation of the drawings]

[0013] The scope of the present disclosure is best understood from the following detailed description of exemplary embodiments when read in conjunction with the accompanying drawings. It is best understood from the perspective of [Figure 1A] FIG. 1A is a block diagram illustrating one embodiment of an exemplary wireless communication system in which the methods and apparatus described and claimed herein may be incorporated. [Figure 1B] FIG. 1B is a block diagram of an exemplary apparatus or device configured for wireless communication, according to embodiments illustrated herein. [Figure 1C] FIG. 1C is a system diagram illustrating an example of a Radio Access Network (RAN) architecture and a core network architecture, according to an embodiment. [Figure 1D] FIG. 1D is a system diagram illustrating an example of a radio access network (RAN) architecture and a core network architecture according to another embodiment. [Figure 1E] FIG. 1E is a system diagram illustrating an example of a radio access network (RAN) architecture and a core network architecture according to another embodiment. [Figure 1F] FIG. 1F is a system diagram illustrating an example of a computing system for use in the communications networks illustrated in FIGS. 1A, 1, 1D, and 1E. [Figure 1G] FIG. 1G is a system diagram illustrating another example of a wireless communication system. [Figure 2] FIG. 2 is a Venn diagram showing the relationship between cells configured to operate in different states. [Figure 3] FIG. 3 is a Venn diagram illustrating the relationship between configured cells from the UE's perspective regarding cell activation status and BFD availability. [Figure 4] FIG. 4 is a flowchart of a network management process for adapting cells in a cell group for which a UE is responsible for performing BFD. [Figure 5]FIG. 5 is a flowchart similar to FIG. 4, but including coordination of adding / releasing / modifying BWP(s) for which the UE is responsible for BFD. [Figure 6A] FIG. 6A illustrates various embodiments of groups of BFD cells associated with a set of BFD-enabled cells and a set of cells with BFD activated by a MAC CE. [Figure 6B] FIG. 6B illustrates various embodiments of groups of BFD cells associated with a set of BFD-enabled cells and a set of cells with BFD activated by a MAC CE. [Figure 7] FIG. 7 is a flowchart of a process performed by a UE to determine the cell in which BFD is implemented. [Figure 8] FIG. 8 is a flowchart of a process performed by a UE to determine the cells in a group for which the UE is responsible for running BFD, including active cells with BFD-enabled active BWPs. [Figure 9] FIG. 9 is a flowchart of a process performed in a UE for selecting a set of active BFD-RS cells. [Figure 10] FIG. 10 is a flowchart of a UE process performed by a UE to determine whether existing BFD requirements (due to network configuration) of a first set of cells for UE capabilities are exceeded, and to identify a second set of cells if the UE determines that the UE capabilities exceed the first set of cells. DETAILED DESCRIPTION OF THE INVENTION

[0014] Further areas of applicability of the present disclosure will become apparent from the detailed description provided hereinafter. The detailed description of the exemplary embodiments is for illustrative purposes only. It should be understood that this is not intended to necessarily limit the scope of the disclosure.

[0015] 3rd Generation Partnership Project: 3GPP) is a group of companies that develops radio access, core transport networks, and codecs. ,security, and service capabilities, including work on quality of service, cellular Developing technical standards for communication network technology. :RAT) standards include WCDMA (commonly known as 3G), LTE (commonly known as LTE-Advanced standards, and the new LTE standard also known as "5G." There is a new radio technology (New Radio: NR). Development of the 3GPP NR standard will continue. This is expected to include the definition of next generation radio access technologies (new RATs). New flexible wireless access offerings below 7 GHz and new ones above 7 GHz This is expected to include the provision of ultra-mobile broadband wireless access. Flexible wireless access is a new, non-backward compatible wireless technology in new frequency bands below 7 GHz. It consists of line access and includes different operating modes that can be multiplexed in the same frequency band. It is expected to address a wide range of 3GPP NR use cases with different requirements. Mobile broadband includes ultra-high-speed applications such as indoor use and hotspots. Centimeter and millimeter wave frequency bands offer mobile broadband access opportunities. It is expected that ultra-mobile broadband will include centimeter waves and and mmWave-specific design optimization for flexible wireless access below 7 GHz It is anticipated that a shared design framework will be used.

[0016] 3GPP has identified a variety of use cases that NR is expected to support. This results in a wide variety of user preferences regarding data rates, latency, and mobility. The use cases fall into the following general categories: Enhanced Mobile Broadband (eMBB) ultra-reliable, low-latency communications Ultra-Reliable Low-Latency Communication (URLLC), large-scale machine types Massive Machine Type Communications (mMTC), network operations (e.g. For example, network slicing, routing, migration and interworking and Enhanced Vehicle-To-Everything : eV2X) communication, Vehicle-To-Vehicle Communication (V 2V), Vehicle-To-Infrastructure Communication :V2I), Vehicle-To-Network Communication (V2N) , Vehicle-To-Pedestrian Communication (V2P), and other These categories include vehicle communications with the public or private entities. Specific services and applications include, for example, monitoring and sensor networks, data Remote control of devices, two-way remote control, personal cloud computing, video Streaming, Wireless Cloud-Based Office, and First Responder Connectivity , Automobile emergency call system, Disaster warning, Real-time gaming, Multi-person video calls , autonomous driving, augmented reality, touch internet, virtual reality, home automation, bots, and aerial drones are just a few examples. All of these and other use cases are contemplated herein.

[0017] For the convenience of the reader, the following list of abbreviations is provided:

[0018] [Table 1-1] [Table 1-2]

[0019] (References) Throughout this document, some standards are referred to by their abbreviations according to the following convention: . 3GPP TS 38.331, V15.3.0, 2018-10, “38.331” 3GPP TS 38.213, V15.3.0, 2018-10, “38.213” 3GPP TS 38.321, V15.3.0, 2018-09, “38.321” 3GPP TS 38.133, V15.3.0, 2018-10, “38.133” 3GPP TS 38.306, V15.3.0, 2018-10, “38.306” 3GPP TS 38.214, V15.3.0, 2018-10, “38.214” RP-182863, “Revised WID: Enhancements on MIMO for NR”, 2018-12-13

[0020] Exemplary Communication Systems and Networks FIG. 1A illustrates an example of a system in which the methods and apparatus described and claimed herein may be incorporated. 1 illustrates an exemplary embodiment of a communication system 100. As shown, the exemplary communication system The system 100 includes a wireless transmit / receive unit (WTRU). 102a, 102b, 102c, 102d, 102e, 102f, and / or 102 g (which may be referred to generically or collectively as WTRUs 102), wireless adapters, Radio Access Network (RAN) 103 / 104 / 105 / 10 3b / 104b / 105b, Core Network 106 / 107 / 109, Public Switched Telephone Network (Public Switched Telephone Network: PSTN) 108, Internet 110, Other networks 112, and V2X servers (or ProSe functions and servers) ) 113, however, the disclosed embodiments may include any number of WTRUs, base stations, and networks. It will be understood that the term "network" contemplates a network and / or network element. WTRUs 102a, 102b, 102c, 102d, 102e, 102f, and 102g Each refers to any type of device configured to operate and / or communicate in a wireless environment. Each of the WTRUs 102a, 102b, 102c, 102d, 1A to 1E are handheld wireless communication devices. Although the diagram shows the various use cases intended for wireless communications, each WTR U means any type of device configured to transmit and / or receive wireless signals. It is understood that the present invention may include or embody a device or apparatus, and only Examples include user equipment (UE), mobile stations, fixed or mobile subscriber units, pocket Mobile phones, cellular phones, and personal digital assistants PDAs), smartphones, laptops, tablets, netbooks, notebook computers computers, personal computers, wireless sensors, home appliances, smart watches or Wearable devices such as smart clothing, medical or electronic health devices, and robots , industrial equipment, drones, vehicles such as cars, buses or trucks, trains, or airplanes These include:

[0021] The communication system 100 may also include a base station 114a and a base station 114b. The base station 114a is connected to the core network 106 / 107 / 109, the Internet 110, network service 113, and / or other networks 112. To facilitate access to the communication network, the WTRUs 102a, 102b, and 102 c. Examples of network services include V2X services, Pro Se services, IoT services, video streaming, edge computing, etc. The base station 114b may include the core network 106 / 107 / 109, the inter- network 110, other networks 112, and / or network services 113 RRH (Remote Radio Headquarters) to facilitate access to one or more communication networks, such as head) 118a, 118b, TRP (transmitting / receiving point) 119a, 119b, and / or or at least one of RSUs (roadside units) 120a and 120b and a wired and and / or any type of device configured to interface wirelessly RRH 118a and 118b are connected to the core network 106 / 107 / 109 and the internet. network 110, network services 113, and / or other networks 112 WTRU 102c to facilitate access to one or more communication networks, such as any type of device configured to wirelessly interface with at least one of The TRPs 119a and 119b may be connected to the core networks 106 / 107 / 108. 9, the Internet 110, network services 113, and / or other networks to facilitate access to one or more communications networks, such as WTR Any type configured to wirelessly interface with at least one of U102d The RSUs 120a and 120b may be devices connected to the core network 106. / 107 / 109, the Internet 110, other networks 112, and / or Facilitate access to one or more communications networks, such as network services 113 WTRU 102e or 102f to wirelessly interface with at least one of the WTRUs The base station 114a may be any type of device configured to 114b is a radio base station device (Base Transceiver Station: BTS), Node B, eNode Node B, Home Node B, Home eNode B, Next Generation Node B -B: gNode B), satellite, site controller, access point (Access Point The base stations 114a and 114b may be single APs, wireless routers, etc. Although illustrated as a single element, the base stations 114a, 114b may be any number of interconnected It will be appreciated that the network elements may include base stations and / or network elements.

[0022] The base station 114a may be part of the RAN 103 / 104 / 105, which may also , Base Station Controller (BSC), Wireless Network Controller other base stations such as Radio Network Controllers (RNCs), relay nodes, and The base station 114b may also include a network element (not shown). 3b / 104b / 105b, which may also be part of the base station controller (B Other base stations and other nodes, such as SCs, Radio Network Controllers (RNCs), and relay nodes The base station 114a may also include other network elements (not shown). A radio network is a network that transmits and / or receives radio signals within a specific geographic area, which may be referred to as a The base station 114b may be configured to serve a particular geographic area, which may be referred to as a cell (not shown). configured to transmit and / or receive wired and / or wireless signals within the area The cell may be further divided into cell sectors. For example, the base station 114a The cell associated with may be divided into three sectors. For example, the base station 114a may include three transceivers, one for each sector of the cell. In one embodiment, the base station 114a may be a multiple-input multiple-output (MMI) system. Multiple Input, Multiple Output (MIMO) technology may be employed, thus providing multiple A transceiver such as

[0023] The base station 114a communicates with the WTRU 1 via the air interface 115 / 116 / 117. 102a, 102b, 102c, and may communicate with one or more of the (e.g., Radio Frequency (RF), Microwave, Infrared (I) IR, ultraviolet (UV), visible light, centimeter waves, millimeter waves, etc. The air interface 115 / 116 / 117 may be implemented using any suitable radio access technology (RA). T) may be established.

[0024] The base station 114b receives signals via wired or air interfaces 115b / 116b / 117b. and RRH118a, 118b, TRP119a, 119b, and / or RSU1 20a, 120b, which may be in communication with one or more of the cable, optical fiber, etc.) or wireless communication links (e.g., radio frequency (RF), microwaves, infrared (IR), ultraviolet (UV), visible light, centimeter waves, millimeter waves, etc. The air interfaces 115b / 116b / 117b may be any suitable wireless access point. The method may be established using RAT.

[0025] RRH118a, 118b, TRP119a, 119b, and / or RSU120 a, 120b communicate with the WTRU via the air interface 115c / 116c / 117c. 102c, 102d, 102e, 102f, which may communicate with any Suitable wireless communication links (e.g., radio frequency (RF), microwave, infrared (IR), ultraviolet The wavelength may be ultraviolet (UV), visible light, centimeter wave, millimeter wave, etc. 15c / 116c / 117c can be established using any suitable radio access technology (RAT). It may be erected.

[0026] WTRUs 102a, 102b, 102c, 102d, 102e, 102f, and / or or 102g for direct communication such as vehicle-to-vehicle (V2V) sidelink communication. They may communicate with each other via a direct air interface 115d / 116d / 117d. , WTRUs 102a, 102b, 102c, 102d, 102e, 102f, and / or or 102g, direct communication such as vehicle-to-infrastructure (V2I) sidelink communication. Network services 11 via the air interface 115e / 116e / 117e 3 (not shown), which may be communicated with the It may be (e.g., radio frequency (RF), microwave, infrared (IR), ultraviolet (U) V), visible light, centimeter wave, millimeter wave, etc.) Air Interface 115d / 116d / 11 7d may be established using any suitable radio access technology (RAT).

[0027] More specifically, as noted above, communication system 100 is a multiple access system. It may be one or more of CDMA, TDMA, FDMA, OFDMA, SC-FDMA, etc. For example, in RAN103 / 104 / 105, the base station 114a and the WTRUs 102a, 102b, 102c, or the RAN 103 RRH118a, 118b, TRP119a, 119b in b / 104b / 105b , and / or RSUs 120a, 120b and WTRUs 102c, 102d, 10 2e and 102f are Universal Mobile Telecommunications Systems (UMTSs). cations System (UMTS) Terrestrial Radio Access Wireless technologies such as UTRA may be implemented, and Wideband CDMA (WCD MA) using air interface 115 / 116 / 117 or 115c / 116c WCDMA is a high-speed packet access (HSPA) technology. High Speed ​​Packet Access (HSPA) and / or Evolved High Speed ​​Packet Access (Evolved HSPA may include communication protocols such as HSPA (High Speed ​​Downlink), HSPA+, etc. High-Speed ​​Downlink Packet Access (HSDPA) and and / or High-Speed ​​Uplink Packet Access HSUPA).

[0028] In one embodiment, the base station 114a and the WTR in the RAN 103 / 104 / 105 In U102a, 102b, 102c or RAN103b / 104b / 105b RRH118a, 118b, TRP119a, 119b, and / or RSU120 a, 120b and WTRUs 102c, 102d are Evolved UMTS Terrestrial Radio Access ( Evolved UMTS Terrestrial Radio Access (E-UTRA) and other wireless technologies are implemented. Long Term Evolution (LTE) and and / or LTE-Advanced (LTE-A) over the air interface. Even if you establish the base 115 / 116 / 117 or 115c / 116c / 117c respectively Good. Air interface 115 / 116 / 117 or 115c / 116c / 117c may implement 3GPP NR technology. LTE and LTE-A technologies are Includes 2D and V2X technologies and interfaces (e.g. sidelink communications). 3GP PNR technology includes NR V2X technology and interfaces (e.g., sidelink communication). nothing.

[0029] In one embodiment, the base station 114a in the RAN 103 / 104 / 105 and the WT In RU102a, 102b, 102c or RAN103b / 104b / 105b RRH118a, 118b, TRP119a, 119b, and / or RSU120 a, 120b and WTRUs 102c, 102d, 102e, and 102f are IEEE80 2.16 (e.g., WiMAX (Worldwide Interoperability for Microwave Access s)), CDMA2000, CDMA2000 1X, CDMA2000 EV-DO, Interim Standard 2000 (IS-2000), Interim Standard 95 (Interim Standard 2000:IS-2000) im Standard 95:IS-95), Interim Standard 856:IS-8 56), GSM (Global System for Mobile communication) (registered trademark), EDG E (Enhanced Data rates for GSM Evolution), GERAN (GSM EDGE), etc. Wireless technology may also be implemented.

[0030] The base station 114c in FIG. 1A may be, for example, a wireless router, a Home NodeB, or a Home eNodeB. , or access points, and may be business establishments, homes, vehicles, trains, airborne, satellite, manufacturing Any suitable RA to facilitate wireless connectivity in a localized area such as a school, campus, etc. In one embodiment, the base station 114c and the WTRU 102e may utilize wireless Establishing a Wireless Local Area Network (WLAN) For this purpose, wireless technologies such as IEEE 802.11 may be implemented. Station 114c and WTRU 102d form a wireless personal area network (WLAN). In order to establish a WPAN (Wide Personal Area Network), In yet another embodiment, the base station 114c and the WTRU 114d may implement any of the wireless technologies. 02e is a cellular-based RAT (e.g., LTE) that can be used to establish picocells or femtocells. For example, WCDMA, CDMA2000, GSM, LTE, LTE-A, NR, etc. As shown in FIG. 1A, the base station 114c may have a direct connection to the Internet 110. Thus, the base station 114c may have a connection to the core network 106 / 10 It may not be necessary to access the Internet 110 via 7 / 109.

[0031] RAN103 / 104 / 105 and / or RAN103b / 104b / 105b , may be in communication with a core network 106 / 107 / 109, which , voice, data, messaging, authorization and authentication, applications, and / or Voice Over Internet Protocol (VoI) P) service to one of the WTRUs 102a, 102b, 102c, 102d, and 102f. The network may be any type of network configured to provide one or more The core network 106 / 107 / 109 provides call control, billing services, mobile location-based services, and service, prepaid calling, internet connectivity, packet data networks It may provide network connectivity, Ethernet connectivity, video streaming, etc. It may also perform high-level security functions such as user authentication.

[0032] Although not shown in Figure 1A, RAN103 / 104 / 105 and / or RAN1 03b / 104b / 105b and / or core network 106 / 107 / 109 , RAN103 / 104 / 105 and / or RAN103b / 104b / 105b and Communicate directly or indirectly with other RANs employing the same or different RATs For example, it will be appreciated that a RAN that may utilize E-UTRA radio technology may also be used. Connected to RAN 103 / 104 / 105 and / or RAN 103b / 104b / 105b In addition to that, the core network 106 / 107 / 109 also supports GSM or N The RAN may be in communication with another RAN (not shown) employing R radio technology.

[0033] The core network 106 / 107 / 109 also includes the WTRUs 102a, 102b, 10 2c, 102d, 102e, and 102f are connected to the PSTN 108, the Internet 110, and / or act as a gateway to access other networks 112. The PSTN 108 is the Plain Old Telephone Service (PSTN). The Internet 110 may include a circuit-switched telephone network that provides TCP / Transmission Control Protocol in the IP Internet Protocol Suite Control Protocol (TCP), User Datagram Protocol Common communication protocols such as UDP (User Datagram Protocol), and Internet Protocol (IP) A group of interconnected computer networks and devices that use communication protocols Other networks 112 may include other service providers. may include wired or wireless communications networks owned and / or operated by For example, network 112 may be any type of packet data network (e.g., IEEE 802.3 Ethernet network) or one or more RANs may include another core network, which may include RAN 103 / 104 / 105 and / or employ the same RAT as RAN103b / 104b / 105b or a different RAT That's fine.

[0034] WTRUs 102a, 102b, 102c, 102d, 10 2e, and some or all of 102f may include multi-mode capabilities, e.g., The WTRUs 102a, 102b, 102c, 102d, 102e, and 102f are The wireless communication system includes a plurality of transceivers for communicating with different wireless networks via wireless links. For example, the WTRU 102g shown in FIG. 1A may employ cellular-based wireless technology. and base station 114 a that may employ IEEE 802 wireless technology. c.

[0035] Although not shown in FIG. 1A, the user equipment may have a wired connection to the gateway. It will be understood that the gateway is a residential gateway. The RG may be a gateway (RG). Many of the ideas contained herein may be used in conjunction with a WTRU. E, and may equally apply to UEs that connect to the network using a wired connection. For example, it will be understood that the wireless interfaces 115, 116, 117 and 11 The ideas that apply to 5c / 116c / 117c can be applied to wired connections as well.

[0036] FIG. 1B illustrates a wireless WTRU 102 according to an embodiment illustrated herein. FIG. 1B is a block diagram of an exemplary apparatus or device configured for communication. Thus, the exemplary WTRU 102 includes a processor 118, a transceiver 120, and transmit and receive elements. Child 122, speaker / microphone 124, keypad 126, display / touch Pad / Indicator 128, Non-Removable Memory 130, Removable Memory 132 , power supply 134, Global Positioning System (GPS) chip set The WTRU 102 may include a wireless LAN controller 136, a wireless LAN adapter 138, and other peripherals 138. may include any subcombination of the foregoing elements, consistent with It will be understood that the embodiment also includes base stations 114a and 114b and / or or nodes that base stations 114a and 114b may represent, for example, but not limited to: Base station equipment (BTS), Node B, site controller, access point (A P), Home Node B, Evolved Node B (eNode B), Home Evolved Node B (HeN B), Home evolved Node B Gateway, Next Generation Node B (gNode-B) and Pro Proxy nodes and the like may be part of or may be part of the elements shown in FIG. 1B and described herein. It is intended to be all-inclusive.

[0037] The processor 118 may be a general-purpose processor, a special-purpose processor, a conventional processor, a digital Digital Signal Processor (DSP), multiple microprocessors, One or more microprocessors, controllers, or microcontrollers associated with a DSP core controller, Application Specific Integrated Circuit (ASIC) ), Field Programmable Gate Array (FP GA circuits, other types of integrated circuits (ICs), state machines The processor 118 may be a processor for signal coding, data processing, power control, input / output power processing, and / or any other features that enable the WTRU 102 to operate in a wireless environment. The processor 118 may also be coupled to the transceiver 120. Advantageously, the transceiver may be coupled to the transmit / receive element 122. FIG. Although the processor 18 and transceiver 120 are shown as separate components, The sensor 118 and the transceiver 120 are integrated together in an electronic package or chip. It will be understood that this is also acceptable.

[0038] The transmit / receive element 122 of the UE communicates with the base station via the air interface 115 / 116 / 117. between stations (e.g., base station 114a) or over air interface 115d / 116d / 117d to transmit or receive signals to or from another UE. For example, in one embodiment, the transmit / receive element 122 may transmit and / or receive RF signals. In one embodiment, the transmit / receive element 122 may be an antenna configured to receive a configured to transmit and / or receive, for example, IR, UV, or visible light signals. Furthermore, in one embodiment, the transmit / receive element 122 may be an emitter / detector. The transmit / receive element 122 may be configured to transmit and receive both RF and optical signals. , configured to transmit and / or receive any combination of wireless or wired signals It will be understood that the

[0039] Furthermore, although the transmit / receive element 122 is illustrated as a single element in FIG. 1B, the WTRU 1 WTRU 102 may include any number of transmit / receive elements 122. More specifically, WTRU 102 may employ MIMO technology. Thus, in one embodiment, the WTRU 102 Two or more devices for transmitting and receiving radio signals via the air interface 115 / 116 / 117 The transmitter / receiver element 122 (e.g., multiple antennas) may be included.

[0040] The transceiver 120 modulates and transmits / receives signals to be transmitted by the transmit / receive element 122. The receiver 122 may be configured to demodulate the signal received by the receiver 122. , the WTRU 102 may have multi-mode capabilities. 120 indicates that the WTRU 102 supports multiple RATs, for example, NR and IEEE 802.11 or communicates via NR and E-UTRA, or different RRHs, TRPs, RSUs, if or multiple beams to allow nodes to communicate with the same RAT over multiple beams. The transceiver may include:

[0041] The processor 118 of the WTRU 102 controls the speaker / microphone 124, the keypad 126, and / or a display / touchpad / indicator 128 (e.g., liquid crystal display). Liquid Crystal Display (LCD) display unit or Organic Light-Emitting Diode (OLED) display unit and may receive user input data from them. 18 also includes a speaker / microphone 124, a keypad 126, and / or a display. User data may be output to the display / touchpad / indicator 128. The processor 118 then reads and writes data from the non-removable memory 130 and / or the removable memory. access information from any type of suitable memory, such as a memory 132, and store data in the memory. The non-removable memory 130 may be a random-access memory. RAM, Read-Only Memory (ROM), Hard Disk The removable storage device may include a hard disk, a removable hard disk drive, or any other type of memory storage device. The memory 132 stores a Subscriber Identity Module (SIM) card. cards, memory sticks, Secure Digital (SD) memory cards, etc. In one embodiment, the processor 118 may include a cloud or edge Servers or home computers hosted on a computing platform accessing information from memory that is not physically located on the WTRU 102, such as on a computer (not shown) You may access and store the data.

[0042] The processor 118 receives power from a power supply 134 and operates in conjunction with the other components within the WTRU 102. The power supply 134 may be configured to distribute and / or control power to the components. It may be any suitable device for providing power to the WTRU 102. For example, The power source 134 may include one or more dry batteries, solar cells, fuel cells, and the like.

[0043] The processor 118 may also be coupled to a GPS chipset 136. The set 136 stores location information (e.g., longitude and latitude) about the current location of the WTRU 102. In addition to information from the GPS chipset 136, the device may be configured to provide , or alternatively, the WTRU 102 may communicate with a base station (e.g., base station 114a, 114b, b) may receive location information via the air interface 115 / 116 / 117 from and / or based on the timing of signals being received from two or more nearby base stations. Consistent with an embodiment, the WTRU 102 may determine its location using It will be appreciated that location information may be obtained by any suitable location-determining method. Deaf.

[0044] The processor 118 may also be coupled to other peripherals 138, Device 138 provides additional features, functionality, or wired and / or wireless connectivity It may include one or more software and / or hardware modules, for example The peripherals 138 may include various sensors such as accelerometers, biometrics (e.g., fingerprints), sensors, electronic compasses, satellite transceivers, digital cameras (for photos or videos), Universal Serial Bus (USB) port or other interconnect Interfaces, vibration devices, TV transceivers, hands-free headsets, Bl Bluetooth® module, Frequency Modulated (FM)-free Line units, digital music players, media players, video game player modules It may also include a browser, an internet browser, etc.

[0045] The WTRU102 is ideal for sensors, home appliances, smart watches, smart wear, and other applications. Wearable devices, medical or electronic health devices, robots, industrial equipment, drones , within other apparatus or devices, such as vehicles, such as automobiles, trucks, trains, or airplanes The WTRU 102 may be embodied in an interconnection interface that may constitute one of the peripherals 138. such equipment or devices through one or more interconnection interfaces, such as The device may be connected to other components, modules, or systems of the device.

[0046] FIG. 1C is a system diagram of the RAN 103 and core network 106 according to an embodiment. As described above, the RAN 103 communicates with the WTRU 10 via the air interface 115. 2a, 102b, and 102c may employ UTRA radio technology. The RAN 103 may also communicate with a core network 106. As shown in FIG. The RAN 103 may include Node Bs 140a, 140b, and 140c, which may include: Each communicates with the WTRUs 102a, 102b, and 102c over the air interface 115. Node Bs 140a, 140b, 140c, 140d, 140e, 140f, 140g, 140h, 140m, 140mc ... 40c may each be associated with a particular cell (not shown) within the RAN 103. The RAN 103 may also include RNCs 142a and 142b. It should be understood that any number of Node Bs and RNCs may be included while remaining consistent with an embodiment. It will be understood.

[0047] As shown in FIG. 1C, Node Bs 140a, 140b may communicate with an RNC 142a. Additionally, Node B 140c may be in communication with RNC 142b. 0a, 140b, and 140c communicate with their respective RNCs 142 via the Iub interface. The RNCs 142a and 142b may communicate with each other via the Iur interface. Each of the RNCs 142a, 142b may communicate with each other via the Each Node B 140a, 140b, 140c may be configured to control the Furthermore, each of the RNCs 142a and 142b may perform outer loop power control, load Control, Admission Control, Packet Scheduling, Handover Control, Macro Diversity , to perform or support other functionality, such as security features, data encryption, etc. It may be configured.

[0048] The core network 106 shown in FIG. 1C includes a media gateway (M GW)144, Mobile Switching Center (MSC) 146, Serving GPRS Support Node (SGSN) ) 148, and / or Gateway GPRS Support Node (Gateway GPRS Suppo Each of the aforementioned elements may include a Core Network 106 Although illustrated as part of the Core Network Business, any one of these elements may be It is understood that the information contained herein may be owned and / or operated by entities other than the Company. There will be.

[0049] RNC 142a in RAN 103 communicates with the core network via the IuCS interface. The MSC 146 may be connected to the MGW 144. The MSC 146 and the MGW 144 may 2c to provide access to a circuit-switched network such as the PSTN 108 to the WTRU 102a, 102b, 102c and conventional landline communication devices. good.

[0050] RNC 142a in RAN 103 also communicates with the core network via the IuPS interface. The SGSN 148 may be connected to the GGSN 1 50. The SGSN 148 and the GGSN 150 may be connected to the WTRU 102a, 102b, 102c provide access to a packet-switched network such as the Internet 110. providing access between the WTRUs 102a, 102b, 102c and IP-enabled devices. Communication may be facilitated.

[0051] As noted above, the core network 106 may also be owned by other service providers. and / or other networks, which may include other wired or wireless networks operated The network 112 may be connected to the network 112.

[0052] FIG. 1D is a system diagram of the RAN 104 and core network 107 according to an embodiment. As described above, the RAN 104 communicates with the WTRU 10 via the air interface 116. 2a, 102b, and 102c. The RAN 104 may also be in communication with a core network 107.

[0053] The RAN 104 may include eNodeBs 160a, 160b, and 160c. Note that 104 may include any number of eNodeBs while remaining consistent with an embodiment. It will be understood that the eNodeBs 160a, 160b, and 160c each for communicating with the WTRUs 102a, 102b, and 102c via the interface 116. In one embodiment, the eNodeBs 160a, 160b may include one or more transceivers. b, 160c may implement MIMO technology. For example, multiple antennas may be used to transmit wireless signals to the WTRU 102a and the WTRU 102b. It may receive a wireless signal from U102a.

[0054] Each of the eNodeBs 160a, 160b, and 160c serves a particular cell (not shown). ), radio resource management decisions, handover decisions, uplink and / or configured to handle scheduling of users in the downlink, etc. As shown in FIG. 1D, the eNodeBs 160a, 160b, and 160c may They may communicate with each other via two interfaces.

[0055] The core network 107 shown in FIG. 1D includes a mobility management gateway (Mobility Management Gateway). Management Gateway (MME) 162, Serving Gateway 164, and Packet Packet Data Network (PDN) gateway 166 Although each of the aforementioned elements is illustrated as part of the core network 107, Any one of these elements is owned and operated by an entity other than the core network operator. It will be understood that the information may be used and / or managed by the organization.

[0056] The MME 162 communicates with the eNodeB 160a in the RAN 104 via the S1 interface. , 160b, and 160c, respectively, and function as control nodes. For example, the MME 162 may authentication, bearer activation / deactivation, WTRU 102a, 102b, 102c It may also be responsible for selecting a specific serving gateway during initial connection. The company also plans to integrate the RAN 104 with other RANs employing other wireless technologies such as GSM or WCDMA. It may also provide a control plane function for switching with an AN (not shown).

[0057] The serving gateway 164 communicates with the e within the RAN 104 via the S1 interface. Node Bs 160a, 160b, and 160c may be connected to each of the Node Bs 160a, 160b, and 160c. The gateway 164 generally communicates user data between the WTRUs 102a, 102b, and 102c. The serving gateway 164 may route and forward the data packets. It also supports anchoring the user plane during eNodeB handover, WTR Paging when downlink data is available on U102a, 102b, 102c Triggering, managing the context of the WTRUs 102a, 102b, and 102c, and It may also perform other functions, such as storing.

[0058] The serving gateway 164 may also be connected to a PDN gateway 166. This allows the WTRUs 102a, 102b, and 102c to receive packets from the Internet 110, etc. providing access to a wireless network for the WTRUs 102a, 102b, and 102c and IP-enabled devices.

[0059] The core network 107 may facilitate communication with other networks, for example: The core network 107 connects the WTRUs 102a, 102b, and 102c to the PSTN 108. WTRUs 102a, 102b, 102c, 102d, 102e, 102f, 102g, 102h, 102i, 102m ... 02c, and traditional landline communications devices. The network 107 is an interface between the core network 107 and the PSTN 108. IP gateways that act as a gateway (for example, IP Multimedia Subsystems (IP It may contain or be in communication with an IMS (Intermedia Multimedia Subsystem) server. Furthermore, the core network 107 may , other wired or wireless services owned and / or operated by other service providers The network 112 may provide access to the network 112, which may include a network.

[0060] FIG. 1E is a system diagram of the RAN 105 and core network 109 according to an embodiment. The RAN 105 communicates with the WTRUs 102a and 102b via an air interface 117. RAN 105 may employ NR radio technology to communicate with 2b. The N3IWF 199 may communicate with the network 109 via the air interface 198. Non-3GPP wireless technologies may be employed to communicate with the WTRU 102c. The WF 199 may also be in communication with the core network 109 .

[0061] The RAN 105 may include eNodeBs 180a and 180b. It is understood that a gNodeB may include any number of gNodeBs while remaining consistent with an embodiment. It will be understood that the g Node Bs 180a and 180b each 117 for communicating with the WTRUs 102a and 102b. In one embodiment where a unified access and backhaul connection is used, In this case, the same air interface may be used between the WTRU and the gNodeB. This may be a core network 109 via one or more gNBs. In this configuration, the gNodeBs 180a and 180b support MIMO, MU-MIMO, and / or Alternatively, digital beamforming technology may be implemented. WTRU 102a may transmit wireless signals to WTRU 102a using, for example, multiple antennas. The RAN 105 may receive wireless signals from the WTRU 102a. It should be understood that other types of base stations may be employed. It should be understood that a may employ more than one type of base station. For example, The RAN may employ eNodeBs and gNodeBs.

[0062] The N3IWF 199 may include a non-3GPP access point 180c, but WF199 may be used with any number of non-3GPP access points while remaining consistent with one embodiment. It will be understood that the non-3GPP access point 180c may include , one or more transports for communicating with the WTRU 102c over the air interface 198. In one embodiment, the non-3GPP access point 180c may include an 8 WTRU 102c over air interface 198 using the 02.11 protocol may communicate with

[0063] Each of the gNodeBs 180a and 180b is associated with a particular cell (not shown). and radio resource management decisions, handover decisions, uplink and / or may be configured to handle scheduling of users in the downlink, etc. As shown in FIG. 1E, g-Node Bs 180a and 180b are connected via an Xn interface. may communicate with each other via

[0064] The core network 109 shown in FIG. 1E is a 5G Core Network 5GC may be a system that is interconnected by a radio access network. The 5G core network 109 may provide a number of communication services to its customers. , consists of a number of entities that perform the functionality of the core network. When used, the terms "core network entity" or "network function" are used. means any entity that performs one or more functions of the core network. Core network entities such as those illustrated in FIG. 1F may include wireless and and / or memory of a device or computer system configured for network communications. and software (i.e., computer executable) stored in It is understood that the program may be a logical entity implemented in the form of a program (instruction).

[0065] As shown in FIG. 1E, the 5G core network 109 provides access and mobility management Function (Access and Mobility Management Function: AMF) 172, Session Management Session Management Function (SMF) 174, User Plane Function (User Plane Function (UPF) 176a and 176b, User Data Management Function (User D Data Management Function (UDM) 197, Authentication Server Function (Authentication Server r Function:AUSF)190, Network Exposure Function NEF (196), Policy Control Function (PCF) (184) , Non-3GPP Interworking Function (N3IWF) ) 199, Application Function (AF) 188, User Data The above elements may also include a User Data Repository (UDR) 178. Although shown as part of the 5G Core Network 109, any of these elements or one owned and / or operated by an entity other than the core network operator It will be understood that the 5G core network may also include these elements. It may not be composed of all of these elements, but may be composed of additional elements, and each of these elements may It should also be understood that the suffix "s" may be composed of multiple instances of the same suffix. , which indicates that network functions are directly connected to each other, but They may communicate through a routing agent such as a message agent or message bus. It should be understood that Figure 1E shows that the connections between network functions are represented by a series of interfaces. It shows that the network function is achieved through a set of interfaces or reference points. is invoked or called by other network functions or services Understand that a service may be modeled, described, or implemented as a set of services that Network function service calls should be made through direct connections between network functions, This is achieved through message exchange on a message bus, software function calls, etc. That's fine.

[0066] The AMF 172 may be connected to the RAN 105 via an N2 interface and may control For example, the AMF 172 may perform functions such as registration management, connection management, reachability management, and so on. The AMF may be responsible for security management, access authentication, and access authorization. It is responsible for transferring the channel configuration information to the RAN 105 via the N2 interface. The AMF172 receives the user plane information from the SMF via the N11 interface. The AMF 172 may receive tunnel configuration information. The AMF 172 typically uses the N1 interface. Routes NAS packets to and from the WTRUs 102a, 102b, and 102c through the The N1 interface is not shown in Figure 1E.

[0067] The SMF 174 may be connected to the AMF 172 via an N11 interface. , may be connected to the PCF 184 via an N7 interface, and may be connected to the PCF 184 via an N4 interface. The SMF 174 may be connected to the UPF 176 via a For example, the SMF 174 may manage session management, WTRUs 102a, 102b, and IP address allocation for 02c, UPF176a and UPF176b Manage and configure traffic steering rules and traffic steering rules for AMF172 It may also be responsible for generating downlink data notifications.

[0068] UPF176a and UPF176b are used for WTRU102a, 102b, and 102c. to a packet data network (DN) such as the Internet 110 provides access to communicate between the WTRUs 102a, 102b, 102c and other devices UPF 176a and UPF 176b may also facilitate signaling to WTRU 102a. , 102b, 102c to provide access to other types of packet data networks. For example, the other network 112 may be an Ethernet network or a data The network may be any type of network that exchanges data packets. and UPF176b receive traffic status information from SMF174 via the N4 interface. The UPF 176a and the UPF 176b may receive the N6 interface routing rules. by connecting a packet data network at the N9 interface or By connecting with other UPFs at the same time, the UPFs can gain access to packet data networks. In addition to providing access to packet data networks, The PF176 is responsible for packet routing and forwarding, policy rule enforcement, and user performance. Handling quality of service for downlink traffic, buffering of downlink packets You may also be in charge of the project.

[0069] The AMF172 is also connected to the N3IWF199 via the N2 interface. The N3IWF can communicate over air interface technologies not defined by 3GPP. The AMF facilitates connectivity between the WTRU 102c and the 5G core network 170. It interacts with N3IWF199 in the same or similar way as it interacts with RAN105. It may also work.

[0070] The PCF184 is connected to the SMF174 via the N7 interface and the N15 interface. It is connected to the AMF172 via the N5 interface and to the application The N15 and N5 interfaces may be connected to an access function (AF) 188. The PCF184 is not shown in the figure. Provides policy rules to the control plane nodes so that the control plane nodes can enforce these rules. The PCF 184 may allow the AMF to communicate with the WTRU via the N1 interface. WTRUs 102a, 102b, and 102c so that they can distribute policies to them. 2b, 102c may send the policy to the AMF 172. The policy is then , may be enforced or applied at the WTRUs 102a, 102b, 102c.

[0071] The UDR 178 serves as a repository of authentication credentials and subscription information. UDRs allow network functions to add to, read from, and modify data in the repository. For example, the UDR 178 may be connected to a network. , and the UDR 178 may be connected to the PCF 184 via an N36 interface. The UDR 178 may be connected to the NEF 196 via an N35 interface. The UDM 197 may be connected via an interface.

[0072] The UDM197 acts as an interface between the UDR178 and other network functions. The UDM 197 authorizes the UDR 178 to access the network functions. For example, the UDM197 may be connected to the AMF172 via the N8 interface. The UDM 197 may be connected to the SMF 174 via an N10 interface. , the UDM 197 may connect to the AUSF 190 via an N13 interface. The DR178 and UDM197 may be tightly integrated.

[0073] The AUSF190 performs authentication-related operations and communicates with the UDM1 through the N13 interface. 78 and connects to AMF172 via the N12 interface.

[0074] The NEF196 will identify capabilities and services within the 5G Core Network109 as The information is published to the application function 188. The publication is done on the N33 API interface. The NEF may connect to the AF188 via the N33 interface, and Connect to other network functions to expose the capabilities and services of the network109 You may do so.

[0075] The application functions 188 correspond to the network functions of the 5G core network 109. The interaction between the application function 188 and the network function is This may be via a direct interface or may occur via the NEF 196. Application functions 188 may be considered part of the 5G core network 109. Often, or outside the 5G core network 109, mobile network operators It may also be deployed by companies that have business relationships with

[0076] Network slicing is a technology that allows mobile network operators to It can be used to support one or more "virtual" core networks behind an interface. This is a mechanism for "sliding" a core network into one or more virtual networks. "issuing" different services running across different RANs or a single RAN Network slicing allows operators to: Various market scenarios with diverse requirements for functionality, performance, and isolation Creating a customized network to provide the best solution for Rio can.

[0077] 3GPP is adapting the 5G core network to support network slicing Network slicing is designed to allow network operators to is a diverse set of 5G use cases with extreme requirements (e.g., Massive IoT, Supports critical communications, V2X, and enhanced mobile broadband Network slicing is a great tool that can be used to Without this technology, each use case faces a unique set of performance, scalability, and availability challenges. When there are performance requirements, the network architecture must be able to efficiently support a wider range of use cases. may not be flexible and scalable enough to efficiently support new The introduction of new network services should be done more efficiently.

[0078] In a network slicing scenario, the WTRUs 102a, 102b, and 102c It may be connected to the AMF 172 via the N1 interface. The AMF is logically one An AMF may be part of one or more UPF(s). 176, SMF(s) 174, and other network functions, and the WTRU UPF(s) 176, SMF(s) (multiple) 174, and other network functions, each of which is a different slice or They may be part of the same slice. When they are part of different slices, may utilize different computing resources, security credentials, etc. In this sense, they may be separated from each other.

[0079] The 5G core network 109 may facilitate communication with other networks. For example, the 5G core network 109 is a network between the 5G core network 109 and the PSTN 108. IP gateways (e.g., IP multimedia subnetworks) that act as interfaces between It may include or communicate with an IMS server, for example. The core network 109 is a system that enables communication via short message service. Short Message Service (SMS) service center For example, the 5G core network 109 may include or communicate with W The TRUs 102a, 102b, and 102c and the server or application function 188 Additionally, the core network 170 may facilitate the exchange of non-IP data packets between the The WTRUs 102a, 102b, and 102c may be connected to the WTRUs 102a, 102b, and 102c. Network 11, which may include other wired or wireless networks operated by the Access to 2 may be provided.

[0080] The core network described herein and shown in Figures 1A, 1C, 1D, and 1E Network entities are required to comply with the requirements of the specific existing 3GPP specifications for those entities. Although these entities and functionality are identified by their respective names, in the future, these entities and functionality may be identified by other names. and specific entities or functions may be identified in future 3GPP NR specifications. It is understood that this specification may be combined with future specifications published by 3GPP, including Therefore, the specific features described and shown in Figures 1A, 1B, 1C, 1D, and 1E The network entities and functionality are provided as examples only and are not intended to be limiting unless otherwise specified. The subject matter disclosed and claimed herein, whether now or in the future, is It will be appreciated that the present invention may be embodied or implemented in any similar communication system, regardless of the particular implementation.

[0081] FIG. 1F is a block diagram of an exemplary computing system 90. One or more devices of the communication network shown in FIGS. 1A, 1C, 1D, and 1E RAN103 / 104 / 105, Core Network 106 / 107 / 109, PSTN1 08, Internet 110, other networks 112, or network services The computer may be implemented as a specific node or functional entity in the computer system 113. The computing system 90 is composed of a computer or a server, and is mainly The computer may be controlled by computer readable instructions, which may be in the form of software. or where such software is stored or how it is used. Such computer readable instructions may be accessed by the processor 91. The processor 9 may execute the program code to cause the computing system 90 to perform operations. 1 is a general-purpose processor, a special-purpose processor, a conventional processor, a digital signal processor ( DSP), multiple microprocessors, one or more microprocessors associated with a DSP core controllers, microcontrollers, application specific integrated circuits (ASICs), filters Field Programmable Gate Array (FPGA) circuits, other types of integrated circuits (ICs) ), a state machine, etc. The processor 91 may perform signal coding, data processing, Power control, input / output processing, and / or computing system 90 may be connected to a telecommunications network. It may also perform any other functionality that allows it to operate on a network. The processor 81 is an optional processor that is different from the main processor 91 and provides additional functions. The processor 91 and / or the coprocessor The server 81 receives, generates, and processes data related to the methods and apparatus disclosed herein. It may be processed as follows.

[0082] In operation, processor 91 fetches, decodes, and executes instructions to perform computing tasks. with other resources via the system bus 80, which is the main data transfer path for the operating system. Such a system bus transfers information between the computers in the computing system 90. The system bus 80 connects the components and defines the medium for data exchange. In other words, there is a data line for sending data and an address line for sending addresses. It also includes control lines for sending interrupts and for operating the system bus. An example of such a system bus 80 is a Peripheral Component Interconnect (Pe PCI bus.

[0083] The memory coupled to the system bus 80 is a random access memory (RAM). RAM 82 and ROM 93 Such memories include circuits that can store and retrieve information. RAM 82 generally contains stored data that cannot be easily altered. , which may be read by the processor 91 or other hardware device, or Access to RAM 82 and / or ROM 93 is controlled by the memory controller. The memory controller 92 may be controlled by the memory controller 92 when the instructions are executed. An address translation function may be provided to translate virtual addresses into physical addresses. The controller 92 also separates processes within the system, separating system processes from user processes. Therefore, the first mode may provide memory protection to isolate the processes. A program can only access memory that is mapped by the virtual address space of that process. and can access the virtual memory of other processes unless inter-process memory sharing is configured. It is not possible to access memory within the address space.

[0084] Additionally, the computing system 90 may transmit instructions from the processor 91 to the printer 9 4, to communicate with peripherals such as keyboard 84, mouse 95, and disk drive 85. The peripheral controller 83 may be responsible for:

[0085] The display 86 controlled by the display controller 96 is It is used to display the visual output generated by the operating system 90. Such visual output includes text, graphics, animated graphics, and The visual output may include video. The display 86 may be provided in the form of a CRT. based video displays, LCD based flat panel displays, gas plasma It may be implemented as a computer-based flat panel display or a touch panel. The display controller 96 generates the video signal that is sent to the display 86. Contains the electronic components necessary for

[0086] Furthermore, the computing system 90 may be configured as shown in FIGS. 1A, 1B, 1C, 1D, RAN 103 / 104 / 105, Core Network 106 / 107 / 10 9, PSTN 108, Internet 110, WTRU 102, or other network The computing system may be connected to an external communication network or device, such as a 90, and the computing system 90 is used to connect those networks. The network may be capable of communicating with other nodes or functional entities in the network, for example wirelessly or It may also include communication circuitry such as a wired network adapter 97. , or in combination with the processor 91, the particular device, node, , or may be used to perform the sending and receiving steps of the functional entities.

[0087] FIG. 1G illustrates an exemplary system in which the methods and apparatus described and claimed herein may be incorporated. 1 illustrates an embodiment of a typical communication system 111. As shown, the exemplary communication system The system 111 includes wireless transmit / receive units (WTRUs) A, B, C, D, E, and F, a base station gNB1 21, the V2X server 124, and the RSUs 123a and 123b. However, the disclosed embodiments may be used with any number of WTRUs, base stations gNBs, V2X networks, and / or network elements. Some or all of WTRUs A, B, C, D, and E are in access network coverage. WTRUs A, B, and C form a V2X group. WTRU A is the group lead, and WTRU B and WTRU C are group members. WTRUs A, B, C, D, E, and F are group members of the access network. When it is under coverage, it connects to the access network via the Uu interface 129a / 129b. If the device is under network coverage or outside of access network coverage, communication between them via a link (PC5 or NR PC5) interface 125a. WTRUs A, B, C, D, E, and F may communicate via vehicle-to-network (V2N) via the interface 126 or the sidelink interface 125b to the RSU. WTRUs A, B, C, D, E, and F may communicate with each other via vehicle-to-infrastructure communication. The V2X server 124 may communicate with the V2X server 124 via a V2I interface 127. TRU A, B, C, D, E, and F are vehicle-to-person (V2P) interfaces. The UE may communicate with another UE via the interface 128.

[0088] Any or all of the devices, systems, methods, and processes described herein The computer-executable instructions (e.g., programs) stored on a computer-readable storage medium The instructions may be embodied in the form of program code, which may be transmitted to the processor 118 or 91. When executed by a processor such as It is understood that the methods and processes described herein may be implemented and / or performed. Any of the steps, operations, or functions described herein may be implemented wirelessly and / or or a computing system configured for wired or wired network communication Implemented in the form of such computer-executable instructions, which are executed on a processor of The computer-readable storage medium may be any non-transitory (e.g., Volatile and non-volatile, removable, implemented in any tangible or physical manner or technology Such computer-readable storage media include removable and non-removable media, but may include signals Computer-readable storage media includes RAM, ROM, EEPROM, flash memory, memory or other memory technology, CD-ROM, Digital Versatile Disk Versatile Disk (DVD) or other optical disk storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage device, or Used to store information that can be accessed by a computing system This includes, but is not limited to, other tangible or physical media.

[0089] Beam Fault Detection Overview

[0090] As recognized by the inventors, a UE configured with multiple cells may You may encounter a situation where a large proportion of the cells are activated at the same time. If the activated cell is configured for BFD, the UE will FD must be performed and a large number of beam fault detection RSs must be handled, which is May exceed UE capabilities for detection.

[0091] BFD / NBI / BFR (also known as link recovery) procedures are implemented in the S If Cell also supports it, it may run in any activated cell. BFD runs continuously, so it is the most While BFD is complex and power-consuming, NBI / BFR is more efficient in the event of a beam obstruction. In the case of multiple activated cells, it can be executed only if the Simultaneous BFD for a small number of cells, e.g., up to 32 cells, is excessively complex and power-consuming. For this purpose, the available UE capabilities for simultaneous BFD may be determined by the cell and / or BFD-related UE capability management approaches are used to allocate BWP and / or reference signals. It is written.

[0092] Significantly higher than the UE capacity required to support the number of simultaneously activated cells Due to low UE capability for BFD, the UE may not actually run BFD on the cell (and / or In this disclosure, there is a need to manage a set of BWPs and / or reference signals. To address this issue and manage BFD-based requests made to UEs with limited capabilities, It offers a variety of approaches to

[0093] The "dormant" cell state (for UEs) is introduced, which replaces the already existing deactivated and active states. If the cell has intermediate characteristics of the activated state, the result may be more frequent cell state transitions. Such developments will affect the cell in which the UE runs BFD (and / or BWP and / or This provides further motivation for more dynamic management of the set of signals (or reference signals). .

[0094] The present disclosure provides a method for managing beam obstructions across cells, BWPs, and RSs so as not to exceed the capabilities of the UE. Describes solutions for managing threat detection, typically based on network directives. Two main classes of solutions are described: solutions based on UE selection and solutions based on UE selection.

[0095] definition

[0096] Set cell

[0097] In various embodiments, the UE may be configured with one or more "configured cells," e.g., a PCell, a PS Can be set in Cell(s) and / or SCell(s) The configuration(s) can be, for example, initial access, handover, or received using RRC signaling during cell (e.g., SCell) addition / release. In various embodiments, the configured cell is a serving cell.

[0098] Different UEs may have different configured sets of cells. The set of cells may be determined, for example, by RRC reconfiguration, including addition / release of a cell (e.g., SCell). In the following, the term configured cell is used for simplicity. For simplicity, they are sometimes simply referred to as "cells."

[0099] Rest and other cell states

[0100] The configured cell of the UE can be in multiple states, e.g., activated, deactivated, dormant Some cells, such as PCells and PSCells, may be one of The cell state may be UE specific, e.g. only in the activated state. i.e., the cell conditions may be different for different UEs at the same time. For example, a cell may be in an activated state for a first UE and at the same time the same cell may be in an activated state for a second UE. The UE is in a deactivated state.

[0101] In various embodiments, the activated cell state is defined as follows: UE The UE transmits any configured SRS, transmits PUCCH, monitors PDCCH, measures CSI, and and / or CSI reporting, etc., in activated cells (cells in the activated state). Normal behavior applies.

[0102] In various embodiments, the deactivated cell state is defined as follows: U E does not apply normal behavior to deactivated cells (cells in the deactivated state). For example, the configured SRS, PUCCH is not transmitted, PDCCH is not monitored, and and not measuring and / or reporting SI.

[0103] In various embodiments, the dormant cell state is defined as follows: The UE is in a dormant cell. A subset of normal operations may be applied. Further exemplary embodiments of the idle cell state are given below. Shown below.

[0104] In some embodiments, the UE transmits the configured SRS in the idle cell and In some embodiments, the UE does not transmit the configured SRS in the idle cell. In the example, the UE transmits a PUCCH configured in the idle cell. In some embodiments, the UE does not transmit the configured PUCCH in the idle cell. In some embodiments, the UE monitors the PDCCH in the dormant cell. In some embodiments, the UE measures CSI in idle cells and does not monitor the CCH. In some embodiments, the UE measures and / or reports CSI on idle cells. In some embodiments, the UE measures CSI on the idle cells, but does not report it. Report the CSI on another cell, for example, a PCell or a PSCell.

[0105] Various further embodiments of the rest cell are presented below. For dormant cells, the UE o Send any configured SRS, o Send any configured PUCCH, o Not monitoring any configured PDCCH, and o Measure and report any configured CSI. For dormant cells, the UE o Send any configured SRS, o Do not transmit any configured PUCCH, o Not monitoring any configured PDCCH, and o Measure and report any configured CSI (e.g., in other cells) For dormant cells, the UE o Do not send any configured SRS, o Do not transmit any configured PUCCH, o Not monitoring any configured PDCCH, and o Measure and report any configured CSI (e.g., in other cells) In various embodiments, other combinations are used.

[0106] In various embodiments, the UE may transition from a cell state from a dormant state to, for example, an activated state. Any configuration in idle cells except for such PDCCH used to indicate the switch configured PDCCH (e.g., configured CORESET, associated search space, RN In various embodiments, such state switching triggering P The DCCH is received in the idle cell itself. In various embodiments, such a state change The triggering PDCCH is received in another cell, e.g., a PCell or a PSCell. Such a state switching triggering PDCCH is (or multiple), search space set(s), search space(s) (multiple), RNTI(s), DCI format(s) and / or or aggregation level(s). These aspects may be configured and / or predefined.

[0107] In various embodiments, the UE may use BFD, NBI, B For example, if the UE runs BFD in an activated cell and then goes into a resting state, When switching to the stopped state, the UE shall ensure that at least the BWP(s) are not changed. In various embodiments, BFR may be implemented in the following ways: Note that this may include BFRQ transmission and / or BFRR reception.

[0108] In various embodiments, the UE may use BFD, NBI, B Do not perform FR. For example, if the UE is activated and then switches to the dormant state, If BFD is running in the cell, the UE stops running BFD in the idle cell. If the cell state is subsequently changed back to activated, the UE shall If the BWP(s) have not changed since they were activated, the BF D. In various embodiments, the UE performs BFD and NBI on the dormant cell. However, another cell, e.g., SpCell, performs BFRQ transmission and BFRR reception. In various embodiments, the UE may perform BFD and NBI in a dormant cell and may transmit BFD and NBI to another cell, e.g. BFRQ transmission is performed in the SpCell and BFRR reception is performed in the idle cell. In this state, the dormant cells may be activated in connection with the BFR procedure, for example, in the event of a beam failure or, for example, After a BFRQ transmission in another cell, it transitions to the Activated state. In this case, a beam failure in a dormant cell is followed by a BFRR reception in the same cell, but in the active In other words, during the procedure between BFD and BFRR, the cell state changes. are.

[0109] In various embodiments, the cell's dormant state is U when the cell state is activated. The RRC configuration of the cell, which is completely or partially separate from the RRC configuration that E applies to the cell. For example, the UE may use the UE's Serving cell RRC configuration to be applied when the cell is in idle state, and another ( In some embodiments, the RRC configuration is configured in the (partial) serving cell. The UE will update the RRC serving cell configuration when the cell state changes between activated and dormant. In some embodiments, the idle cell state may be, for example, For example, a list of DL BWP settings for the dormant state that is separate from the list for the activated state, and a list of UL BWP settings for the dormant state that is separate from the list for the activated state. Each is associated with a separate DL and / or UL BWP configuration. In this state, one or more BWP configurations in the list of BWP configurations for the activated state are , for the dormant state only. In some embodiments, the BWP setting for the active state One or more BWP settings in this list will also be used in hibernation. In this state, the BWP used for the dormant state is the default BWP used for the activated state. P, or a BWP with a BWP-id equal to the configured dormant BWP-id, This may be a parameter of the serving cell RRC configuration. Switching refers to switching to a dormant BWP(s). In addition to the active and inactive states, BWPs, such as DL BWPs, can also have resting states. The definition of the dormant BWP state may be the dormant state, as described above in various embodiments. Follow the instructions for cell states (but apply to BWPs instead of cells).

[0110] In various embodiments, the BWP used in the dormant state is CORESET and / or Or it is configured to have no search space, so that the UE monitors the PDCCH in BWP. There may be cases where tarring does not need to be performed.

[0111] In various embodiments, for a cell in a dormant state, e.g., CSI measurement accuracy, beam There are at least partially distinct UE requirements, such as fault detection.

[0112] The advantages of the dormant cell state compared to the activated cell state include a subset of normal operation. This includes the possibility of lower UE power consumption since the inactive The advantages of the resting cell state compared to the activated state include the ability to reduce normal behavior in the activated cell state. The transition time to activity can be shorter from a resting state than from a deactivated state. Includes:

[0113] In various embodiments, the UE maintains the RRC configuration of the cell across state switches. In various embodiments, cell state switching may be performed using MAC CE and / or L1 signaling. The trigger can be triggered by a ring, e.g., a DCI, and the trigger can be triggered by a dormant cell (e.g., active to dormant), or to another cell such as a PCell or PSCell (e.g. In some embodiments, the network The network triggers cell state transitions to and from hibernation. In an embodiment, the UE triggers a cell state switch to / from a dormant state. For example, a BFRQ transmission on an idle cell or another cell such as an SpCell can cause a This can trigger a switch of the cell state to activated.

[0114] On and off cell states and / or BWP states

[0115] In various embodiments, BFD, NBI, BFR and / or link recovery are configured. One or more cell states of the selected cell, e.g., the activated state, are supported. In this case, if the cell state supports BFD, NBI and / or BFR, A cell is defined to be in the "on" state. In some embodiments, BFD is supported. A cell is defined to be in an "on" cell state if it is in the cell state that is being monitored. In some embodiments, if BFD and NBI are supported in the cell state, the cell: In some embodiments, BFD, NBI and If BFRR reception is supported in the cell state, the cell is in the "on" cell state. In some embodiments, link recovery is supported in the cell state If so, the cell is defined to be in an "on" cell state.

[0116] In various embodiments, BFD, NBI, BFR and / or link recovery may be one or more of: Various BWP states are supported, e.g. active or dormant BWP states. In the configuration, if BFD, NBI and / or BFR are supported in the BWP state , BWP is defined as the "on" BWP state. In some embodiments, BF If D is a supported BWP state, then BWP is defined as the "on" BWP state. In some embodiments, when link recovery is in a supported BWP state, , BWP is defined to be the "on" BWP state.

[0117] In various embodiments, the action (single or multiple) that the UE applies to the cell in the on-cell state is (multiple) if such behavior is configured by, for example, RRC, BFD, N Contains BI and / or BFR.

[0118] UE functionality (e.g., BFD, NBI, BFR and / or link recovery) is "specific" "Supported in the cell state" (e.g., activated, deactivated) In various embodiments, it is anticipated that a UE may perform functionality in a cell that is in a particular cell state. In various embodiments, the functionality is configured by the network. If the UE needs to be activated, the UE must be configured by the network. When configured and / or activated, it is expected to perform functionality in the cell. In some cases, for example, optional UE features (UE features may be E functionality) even if the functionality is supported in the cell state, the corresponding Only UEs that support the given feature (and therefore functionality) can execute the functionality. In other words, the UE functionality supported in a particular cell state is determined by the It does not depend on the capability of any particular UE to support the feature. Instead, it depends on the cell state. The functionality of the UE to be provided depends on the communication standard or protocol, and at least some of the configuration and To provide support for cell-state functionality for some UEs means.

[0119] Considering how "supported" is generally defined herein: BFD is supported in a particular cell state if the communication standard supports BFD for cells in that particular cell state. This may mean supporting the configuration and / or activation of FD to the UE. uses one or more BFD- It can mean assessing (monitoring) one or more downlink link qualities based on RS. The link quality assessment involves estimating the BLER of a hypothetical PDCCH transmission and one or more In one embodiment, the BFD may involve a comparison with an upper threshold or thresholds. Supported for activated cells, but not for deactivated cells The BFD supported in a particular cell state is determined by the BFD, NBI and / or BFR Note that this does not mean that BFD, NBI, and / or In some cases, BFR is only configured in the UE for a particular cell but is not activated, or Or it may not even be set.

[0120] Considering how "supported" is generally defined herein: The NBI supported in a particular cell state is the NBI that the communication standard supports for a cell in a particular cell state. This may mean supporting the configuration and / or activation of a BI into the UE. selects a candidate beam associated with the candidate RS based on one or more candidate RSs. This may mean assessing (monitoring) one or more downlink link qualities (e.g., In one embodiment, NBI is not supported in activated cells. However, it is not supported for cells in the deactivated state. NBI used does not imply that BFD, NBI and / or BFR are implemented in the cell. Note that BFD, NBI, and / or BFR may be It may only be configured in the UE and not activated, or may not even be configured. .

[0121] Considering how "supported" is generally defined herein: BFR is supported in a particular cell state when the communication standard supports BFR for a cell in a particular cell state. This may mean supporting the configuration and / or activation of FR to the UE. is a Beam Failure Recovery Request indicating the selected candidate beam. st:BFRR) from the UE. Receive beam failure recovery response, receive BFRR and switch to selected candidate beam In one embodiment, BFR is supported in activated cells. Supported for certain cell states, but not for cells in deactivated state. Supported BFR means that BFD, NBI and / or BFR are running in the cell. Note that BFD, NBI, and / or BFR do not imply a specific security If the UE is configured for the rule but not activated, or not even configured There are cases where this happens.

[0122] A configured cell that is not in the on-cell state is in the off-cell state.

[0123] In one embodiment, the configured cell is one of two cell states for the UE. For example, For activated cell state, BFD is supported in cell state, so It is in a cancelled state. In one embodiment, NBI and BFR are supported in the cell state. In one embodiment, NBI is supported in the cell state, but not BFR. In one embodiment, NBI and BFRR are supported in the cell state, but not BFRQ. . For deactivated cell states, BFD is not supported in cell states. , which is the off-cell state. In one embodiment, NBI and BFR are not supported in the cell state. In one embodiment, BFR is supported in the cell state, but not NBI. In one embodiment, BFRQ is supported in the cell state, but not NBI or BFRR. .

[0124] In this example, the on-cell state corresponds to an activated cell state, and the off-cell state corresponds to an activated cell state. corresponds to a deactivated cell state. In one embodiment, BFD is activated Supported in activated cell state but not in deactivated cell state This is because the activated cell state is the on-cell state, whereas the deactivated The selected cell state is the off-cell state.

[0125] In another embodiment, the configured cell is one of three cell states for the UE: It is possible, for example, For activated cell state, BFD is supported in cell state, so It is in a cancelled state. In one embodiment, NBI and BFR are supported in the cell state. In one embodiment, NBI is supported in the cell state, but not BFR. In one embodiment, NBI and BFRR are supported in the cell state, but not BFRQ. . In the dormant state, BFD is supported in the cell state, so it is in the on-cell state. In one embodiment, NBI and BFR are supported in the cell state. In one embodiment, NBI is supported in the cell state, but not BFR. In one embodiment, NBI and BFR are not supported in the cell state. In one embodiment, BFR is supported in the cell state, but not NBI. In one embodiment, NBI and BFRR are supported in the cell state, but not BFRQ. . For deactivated cell states, BFD is not supported in cell states. , which is the off-cell state. In one embodiment, NBI and BFR are not supported in the cell state. In one embodiment, BFR is supported in the cell state, but not NBI. In one embodiment, BFRQ is supported in the cell state, but not NBI or BFRR. .

[0126] In this example, the ON cell state corresponds to the ACTIVATED cell state and the quiescent cell state. In one embodiment, the BFD is supported in activated and dormant cell states, but not in inactive This is not supported in the activated cell state and the resting cell state. The inactivated cell state is the on-cell state, whereas the deactivated cell state is the off-cell state. It is a posture.

[0127] Another example with three cell states is as follows: For activated cell state, BFD is supported in cell state, so It is in a cancelled state. In one embodiment, NBI and BFR are supported in the cell state. In one embodiment, NBI is supported in the cell state, but not BFR. In one embodiment, NBI and BFRR are supported in the cell state, but not BFRQ. . In the dormant state, BFD is not supported in the cell state, so it is in the off-cell state. . In one embodiment, NBI and BFR are supported in the cell state. In one embodiment, NBI is supported in the cell state, but not BFR. In one embodiment, NBI and BFR are not supported in the cell state. In one embodiment, BFR is supported in the cell state, but not NBI. In one embodiment, NBI and BFRR are supported in the cell state, but not BFRQ. . For deactivated cell states, BFD is not supported in cell states. , which is the off-cell state. In one embodiment, NBI and BFR are not supported in the cell state. In one embodiment, BFR is supported in the cell state, but not NBI. In one embodiment, BFRQ is supported in the cell state, but not NBI or BFRR. .

[0128] In this example, the on-cell state corresponds to an activated cell state, and the off-cell state corresponds to an activated cell state. corresponds to a deactivated cell state or a dormant cell state. is supported in the activated cell state, but not in the deactivated cell state. This is because the activated cell state is not supported in the online or dormant cell state. The deactivated and resting cell states are the off-cell states, whereas the deactivated and resting cell states are the off-cell states. It is a posture.

[0129] In some embodiments, different cell states may support different methods such as those listed above. Which,set of BFD / BFR related operations are,specific to cell types, e.g., SpCell and S In some embodiments, some configured cells may be For example, it is always on for an SpCell.

[0130] A configured cell in an on or off cell state is also referred to below as Also referred to as "on-cell" or "off-cell."

[0131] In various embodiments, the concepts of on-cell and off-cell are used to refer to the BWP (single or multiple) of a cell. (DL and / or UL) BWP on / off The BWP state may follow various embodiments for the cell states described above. For example, P is one of three potential BWP states, e.g., active BWP state (on BWP state), Inactive BWP state (off BWP state) and dormant BWP state (various embodiments For example, if the active DL BWP is on, , the cell is on. In another embodiment, an active DL BWP and an active UL If the BWP is on, the cell is on. The set of possible states is DL BWP and UL Note that there may be differences between BWPs.

[0132] Various embodiments throughout this disclosure apply to cells and / or BWPs. To this end, "cell(s) and / or BWP(s)" , sometimes written as "cell(s) / BWP(s)".

[0133] BFD-Cells

[0134] In various embodiments, a UE's "BFD-cell" is a configured cell in which the UE runs BFD. It is a cell.

[0135] In various embodiments, the only cells in the ON state may be BFD-cells. In an embodiment, the set of BFD-cells for a UE is a subset of the on-cells. In this embodiment, the set of BFD-cells is equal to the set of on-cells.

[0136] In some embodiments, a "BFD-cell" is a cell that detects a beam failure. A configured cell in which the UE can perform NBI and / or BFR. Alternatively, the BFR may be, in various embodiments, a BFD-cell or other cells other than a BFD cell ( (single or multiple), i.e., the cell in which the corresponding beam obstruction is detected, either partially or completely. Note that the process may be performed entirely.

[0137] In various embodiments, the term "link recovery" refers to BFD, NBI, BFR, BFD +NBI, BFD+BFR, NBI+BFR and / or BFD+NBI+BFR, or It may refer to or be equivalent to any part of them. For example, Cell / BWP Enabling / disabling and / or activating / deactivating BFD on Enable / disable and / or activate / deactivate "Link Recovery" in the This may be equivalent to BFD booting, which in some cases may be used in conjunction with link recovery procedures. Therefore, the term "BFD-cell" is In various embodiments, the UE may be configured to: , BFD+BFR, NBI+BFR, and / or BFD+NBI+BFR In some embodiments, the UE may link with the cell. Only if the cell is not expected to perform recovery, BFD, NBI or BFR, Not FD-cell.

[0138] In various embodiments, the BFD-BWP of a UE is a BWP in which the UE runs BFD, e.g. For example, an active DL BWP. In various embodiments, for example, Implementations where BWP and / or at most one UL BWP are active at the same time In this state, if and only if the active DL BWP of the cell is BFD-BWP , the cell is a BFD-cell. For example, if the active DL BWP of the cell is BFD-BWP A cell is a BFD-cell if and only if has an active DL BWP but no active UL BWP (e.g., There are cases where UL BWP is not configured for a cell such as a DL-only SCell.

[0139] The term "BFD BWP" refers, in various embodiments, to the UE receiving link recovery, BFD, NBI , BFR, BFD+NBI, BFD+BFR, NBI+BFR and / or BFD+N It may refer to a BWP that performs BI+BFR, or a part thereof. In this case, the UE is expected to perform link recovery, BFD, NBI or BFR in BWP. A BWP is not a BFD BWP unless and until it is not

[0140] Figure 2 shows a Venn diagram of the various sets of cells from the UE's perspective. The target is all cells detected by the UE and / or otherwise indicated / indicated to the UE. It may include all configured cells. The set of configured cells may be a subset of all cells. For example, the configured SpCell(s) and SCell(s) by the network through RRC signaling for one or more instances The set of configured cells is divided into two subsets: on-cells and off-cells. The off-cell is in the off state, whereas the on-cell is in the on state. The set of cells is a subset of the on-cells.

[0141] On and Off BFD-RS

[0142] BFD-RS is, in various embodiments, a reference signal that a UE may use for BFD. BFD-RS is a synchronous transmission system that supports CSI-RS, SSB (e.g., PSS, SSS, PBCH, and / or PBCH-DMRS), SRS, DMRS and / or other signals (singular or In various embodiments, the BFD-RS may be of different types. In some embodiments, there are two BFD-RS types, the first BFD-RS type The first type is periodic CSI-RS and the second BFD-RS type is SSB.

[0143] The UE, in various embodiments, is configured with one or more BFD-RSs in a configured cell. Zero or more BFD-RS may be configured per BWP in some embodiments. In some embodiments, for example, the BFD-RS may be, for example, Selection of the type of RS, such as SSB or SSB, and explicit indication of the corresponding RS index In some embodiments, BFD-RS is configured implicitly by For example, the active BWP monitors CORESET and QCL. RS (single) configured as number or numbers), for example, through the active TCI state. In some embodiments, a combination of explicit and implicit BFD-RS configuration is used. In various embodiments, the BFD-RS of the cell / BWP is used for RRC, MAC and and / or DCI signaling, or a combination thereof. For example: The first set of RSs is configured for BWP using RRC signaling. In some embodiments, the set of BFD-RSs is transmitted by MAC signaling, e.g., In some embodiments, R is selected from a first set of R using AC CE. The second set of S is transmitted using MAC signaling, e.g., using MAC CE. In some embodiments, the set of BFD-RSs is selected from the set of L1 series. The RS is selected from the first set by the signaling, e.g., DCI. In an embodiment, the set of BFD-RSs is determined by L1 signaling, e.g., DCI, to indicate the RS are selected from a second set of

[0144] In some embodiments, the implicit configuration of BFD-RS is performed only in the SpCell. For example, if BFD-RS is not configured on the SCell (or its BWP), If not, it means that BFD is not enabled on the SCell (for that BWP).

[0145] The BWP may, in various embodiments, be a DL BWP and / or an UL BWP. good.

[0146] "On BFD-RS" for a UE refers, in various embodiments, to the UE monitoring for beam obstructions. For example, the UE is configured to receive BFD-RS (as well as measurements are performed on other resources and / or signals if necessary, and the corresponding link quality is below the threshold. If all on-BFD-RS of the cell / BWP are below the threshold, In this case, L1, in various embodiments, indicates a beam failure to a higher layer, e.g., MAC. In an embodiment, the UE performs the measurements and / or evaluations according to a specific periodicity, the periodicity being: Whether predefined, configured, and / or other parameters It may be obtained from a meter.

[0147] A configured BFD-RS that is not turned on is "off BFD-RS", i.e. That is, the UE does not monitor this due to beam obstruction.

[0148] In some embodiments, all configured BFD-cell active BWPs are In some embodiments, the BFD-RS is an on-BFD-RS. The subset of BFD-RS configured for the active BWP is the on-BFD-RS. This means that several BFD-cells configured for the active DL BWP are BFD-RS may be off.

[0149] In various embodiments, a BFD-RS configured for an inactive BWP is turned off. It's RS.

[0150] In various embodiments, a cell with at least one on BFD-RS is a BFD-RS. In various embodiments, a BWP having at least one on-BFD-RS is BFD BWP.

[0151] Various mechanisms for changing cell / BWP states

[0152] The cell and / or BWP configured for the UE may, in various embodiments, be an active It can be in one of several potential states, such as activated, deactivated, or hibernated. The state of the cell / BWP can change over time. Various examples of mechanisms are given below: That's right. · RRC configuration, e.g. adding, releasing, modifying cells / BWPs. For example, the cell / BWP index is used to list the cells / BWPs to be released, and / or Or, if it is included in the list of cells / BWPs to add and / or modify, the cell / BWP The state of is changed. MAC CE based cell / BWP state changes (e.g. MAC CE for PDSCH) o For example, in a bitmap, sequence, or list, one corresponding to a cell / BWP Depending on one or more bits, the state of the cell / BWP is changed, and the bit / item and cell / B The association with the WP is predefined or configured, for example, using RRC signaling. For example, a particular value of one or more bits may affect a particular cell / BWP state and and / or can respond to specific changes in cell / BWP state (e.g., different values can correspond to toggling, no state change, etc.) In some embodiments, an explicit cell / BWP index is included in the MAC CE. In some embodiments, the presence or absence of a cell / BWP index in the MAC CE Absence indicates a change in cell / BWP state, e.g., no change, state switch, or predefined 1 shows the state changes from one state to the next according to the state transition diagram provided. DCI-based cell / BWP state change (e.g. DCI on PDCCH). In some embodiments, the DCI is received from the cell / BWP of the cell / BWP in which the DCI was received. Indicates state transitions. In some embodiments, the DCI may be received from a cell / BWP other than the cell / BWP on which the DCI was received. This indicates a state transition of the WP, e.g., to another frequency carrier. For example, if the UE is configured for cross-carrier scheduling, the carrier This can be achieved by using an indicator to indicate the cells. In some embodiments, an indication of the state to which the cell / BWP should be changed is included in the DCI. In some embodiments, the state toggling or state transition according to the state transition diagram is This is either explicitly or implicitly stated in the DCI. o In various embodiments, transitions to and from dormant state may be triggered by a DCI. It is possible. Timer-based cell / BWP state change. The cell / BWP state changes upon timer expiration. This means that there is no activity (e.g., no activity for the UE in the cell / BWP until the timer expires) Inactivity timers that expire when there is no control and / or data transmission or reception It's now. A UE with an idle SCell has data to transmit and When sending a scheduling request in a cell such as Cell, this is done by, for example, Activation of the dormant cell is triggered in anticipation of receiving a subsequent UL grant in the active cell. In such a situation, any idle cell(s), e.g., SCell(s), may be triggered. Which one or more) to activate can be configured in the RRC configuration. The number of cells kept in the dormant state, e.g., the number of SCells, is determined by the number of cells in the UE data buffer. Status, e.g., related to UE Buffer Status Report (BSR) It may be based on: there is little data in the buffer, or If there is no data in the buffer, this can trigger more cells to switch to the dormant state. More data means more cells can be accessed so that data can be transmitted quickly. This can trigger a switch to the activated state. The status of an SpCell changes, for example, to the dormant state of an SCell in the same cell group. Can trigger a transition from / to hibernation, e.g., active BWP of SpCell (e.g. DL and / or UL BWPs) switch to the default BWP, This may trigger one or more SCells in the active state to switch to the dormant state. do.

[0153] In some cases, the dormant cell state can only be reached from the activated state. In some cases, the dormant state can be reached from both the activated and deactivated states. In various embodiments, the dormant state can be a sub-state of the activated state. where another substate is a non-dormant activation state (e.g., "fully activated" In various embodiments, the cell may be deactivated and then If a cell is activated, it maintains its activation substate. For example, if a cell is in a dormant state, state (activated substate) and a deactivation MAC CE is received. If the cell is subsequently activated, the cell switches to the deactivated state. If received, the cell switches to the dormant state, i.e., the substate before deactivation Similarly, in various embodiments, the cell must be in a non-quiescent active state before switching to deactivation. If the cell was previously dormant, it will remain in a non-dormant activated state after a subsequent activation. In various embodiments, the dormant state is a sub-state of the deactivated state. Similarly, such substates of the deactivation state are After deactivation, it may be maintained by, for example, the MAC CE.

[0154] UE capability for BFD

[0155] A particular network configuration generates BFD processing requirements (or simply "requests") for the UE. The ability to meet this requirement, as characterized by UE capabilities, depends on RS tracking and The complexity of the UE is high because it involves the calculation of the beam obstruction metrics, the measurement of the beam obstruction metrics, and the periodic beam obstruction metrics calculation. This relates to the processing power and power consumption of the UE across the configured cells. The amount of simultaneous BFD performed by may need to be limited according to the capabilities of the UE.

[0156] In various embodiments, one or more UE capabilities may be configured to allow the UE to The UE capabilities are reported to the network (e.g., a base station such as a gNB). The term is used to describe information sent to the network regarding the performance attributes of the UE. However, it should be understood that UE capabilities include a variety of parameters. Optional parameters specify processing power / reserve for handling BFD processing and battery power. Such one or more capabilities may be implemented in various ways, for example: It may be formulated / characterized in terms of one or more of the UE capability parameters. Maximum number of concurrent BFD-BWPs, Maximum number of simultaneously on BFD-RS of the first type (e.g., periodic CSI-RS), Maximum number of simultaneous on-BFD-RS of the second type (e.g., SSB), Maximum number of simultaneously on BFD-RS (e.g., the number of simultaneously on BFD-RS of the first type and the number of on BFD-RS of the second type) (total of concurrent BFD-RS types), The combination of the maximum number of simultaneous BFD-cells and the maximum number of simultaneous ON BFD-RS, - The maximum number of configured BFD-RS, i.e., PDCCH quality monitoring or new the maximum number of RSs configured in the UE that supports both beam identification and The maximum number of configured BFD-RS, the maximum number of configured BFD-RS of the first type (e.g., periodic CSI-RS), the maximum number of configured BFD-RS of the second type (e.g., SSB), and / or Maximum number of configured BFD-RS (e.g., the number of configured BFD-RS of the first type and the sum of the configured BFD-RS of the second type), Maximum number of concurrent BFD-cells.

[0157] The above parameters may be reported independently, but the parameters must be independent of each other. Instead, it is reported as a multidimensional vector, such as a combination of cell count and BFD-BWP capacity. For example, a UE may be capable of handling N cells. However, it is possible to use a different number of BWPs or RSs to simultaneously connect N-2 cells. Therefore, the above example is for simplicity's sake. Although given as a single parameter, the UE capability parameters are not independent of each other may be reported or considered by the UE in more than one group. It should be recognized that this may be taken into consideration.

[0158] In various embodiments described herein, BFD, NBI and / or BFR-related The UE capabilities may include multiple UE capabilities related to the UE's BFD, NBI and / or BFR capabilities. In some embodiments, such UE capabilities include BFD, NBI, and and / or a component (e.g., part) of the UE capability for BFR. For this purpose, the term "UE capabilities" or "UE capability parameters" (which may include multiple parts) is used. , used in the singular) are also used in such embodiments.

[0159] In various embodiments, the UE may be configured to receive the UE's BERT signal for each frequency band, for each combination of frequency bands (e.g., , multiple bands), per frequency range and / or per UE, BFD, NBI and / or Or it can report UE capabilities related to BFR (e.g. multiple components). In various embodiments, the UE may be configured to provide BFD, NBI and / or B UE capabilities related to FR (e.g., multiple components) and BF per UE D, related to NBI and / or BFR (e.g., multiple components) (potential The UE may report its (different) UE capabilities.

[0160] In various embodiments, the UE may use a single U for the particular capability it applies to per frequency band. E capability scores / parameters can be reported and a single capability score can then be applied to each band. (Similarly for band combinations, etc.) In various embodiments, the UE may Multiple UE capability values ​​may be reported for a particular capability that applies per Each of these is then applied to a different band (the same applies to band combinations, etc.). Mr).

[0161] In various embodiments, the UE may report the following UE capabilities for each frequency band: It is in the form of an RRC message, but other messages such as NAS messages may also be used. The different types of UE capability information that can be reported in the fields of the message are , as follows: The maximum number of simultaneously on BFD-RS of the first type (e.g., periodic CSI-RS), and Beauty · Maximum number of simultaneous on-BFD-RS of the second type (e.g., SSB).

[0162] In various embodiments, the UE may report the following UE capabilities for each frequency band: do. Maximum number of simultaneously on BFD-RS of the first type (e.g., periodic CSI-RS), The maximum number of simultaneous on-BFD-RS of the second type (e.g., SSB), and Maximum number of simultaneously on BFD-RS (e.g., first type (e.g., periodic CSI-RS) ) and a second type (e.g., SSB) of simultaneous BFD-RS. (total of In various embodiments, the UE may report the following UE capabilities for each UE: The maximum number of simultaneously on BFD-RS of the first type (e.g., periodic CSI-RS), and Beauty · Maximum number of simultaneous on-BFD-RS of the second type (e.g., SSB).

[0163] In various embodiments, the UE may report the following UE capabilities for each UE: Maximum number of simultaneously on BFD-RS of the first type (e.g., periodic CSI-RS), The maximum number of simultaneous on-BFD-RS of the second type (e.g., SSB), and Maximum number of simultaneously on BFD-RS (e.g., first type (e.g., periodic CSI-RS) ) and a second type (e.g., SSB) of simultaneous BFD-RS. (total of In various embodiments, the UE may report the following UE capabilities for each UE: Maximum number of simultaneously on BFD-RS (e.g., first type (e.g., periodic CSI-RS) ) and a second type (e.g., SSB) of simultaneous BFD-RS. (total of In various embodiments, the UE may report the following UE capabilities: For each frequency band, the first type (e.g., periodic CSI-RS) of simultaneous on-BF Maximum number of D-RS, For each frequency band, the maximum number of simultaneous BFD-RS of the second type (e.g., SSB) large number, For each frequency band, the maximum number of simultaneously on BFD-RS (e.g., the first type (e.g., Simultaneous on-BFD-RS of a second type (e.g., SSB) with periodic CSI-RS (total of concurrent BFD-RS), For each UE, simultaneous on-BFD-R of the first type (e.g., periodic CSI-RS) The maximum number of S, Maximum number of simultaneous on-BFD-RS of the second type (e.g., SSB) if per UE, and Maximum number of simultaneously on BFD-RS (e.g., first type (e.g., peripheral simultaneous BFD-RS of the second type (e.g., SSB) On BFD-RS total).

[0164] In various embodiments, the UE may report the following UE capabilities: For each frequency band, the first type (e.g., periodic CSI-RS) of simultaneous on-BF Maximum number of D-RS, For each frequency band, the maximum number of simultaneous BFD-RS of the second type (e.g., SSB) large number, For each frequency band, the maximum number of simultaneously on BFD-RS (e.g., the first type (e.g., Simultaneous on-BFD-RS of a second type (e.g., SSB) with periodic CSI-RS (total of concurrent BFD-RS), and Maximum number of simultaneously on BFD-RS (e.g., first type (e.g., peripheral simultaneous BFD-RS of the second type (e.g., SSB) On BFD-RS total).

[0165] In various embodiments, the UE may report the following UE capabilities: For each frequency band, the first type (e.g., periodic CSI-RS) of simultaneous on-BF Maximum number of D-RS, For each frequency band, the maximum number of simultaneous BFD-RS of the second type (e.g., SSB) Large numbers, and Maximum number of simultaneously on BFD-RS (e.g., first type (e.g., peripheral simultaneous BFD-RS of the second type (e.g., SSB) On BFD-RS total).

[0166] In various embodiments, BFD-RS related UE capabilities, e.g., simultaneous on BFD-RS The maximum number counts only explicitly configured BFD-RS. BFD-RS related UE capabilities, e.g., the maximum number of simultaneous BFD-RS enabled, are explicitly configured. This counts both configured and implicitly configured BFD-RS.

[0167] In various embodiments, BFD-RS related UE capabilities, e.g., maximum simultaneous on BFD-RS The number is based on the assumed period. In some embodiments (A), the period is determined by the radio link This is the period during which the physical layer notifies the upper layer if the quality is worse than the threshold. In embodiment (B), the UE receives the downlink radio signal of the BFD-RS estimated in the last period. Evaluate whether the link quality becomes worse than a threshold within a period. , the configured or applicable period is scaled compared to the assumed period. If so, the actual UE capabilities are scaled (compared to the reported UE capabilities).

[0168] For example, the periodicity of the BFD-RS(s) is 10 ms, so the expected In an example where the specified period is 2 milliseconds (ms), but the set period is 10 ms (e.g., Consider the embodiment (A) which is the scaling between the set period and the assumed period. This means that the UE has a ringing factor of 5. If you report an E capability of 4 (assuming a 2 ms period), the actual U that your network can accommodate E capability is 4*5=20 simultaneous on BFD-RS.

[0169] In various embodiments, the UE may determine whether to transmit the power supply voltage based at least in part on its battery power status. and / or based on the battery saving scheme applied by the UE, capabilities, e.g. Indicates BFD related capabilities. For example, if the UE battery status is high, the UE May indicate BFD related capabilities, e.g., more BFD-RS. UE may apply power saving schemes. When used, the UE will exhibit low BFD-related capabilities and thereby consume too much BFD-related power. Prevent costs.

[0170] Overview of Network / UE Hybrid BFD Management Solution and UE-Based Implementation

[0171] In a first class of embodiments of BFD management, the network (or gNB, or simply The base station determines the BFD based on the UE capabilities and adjusts the BFD so as not to exceed the UE capabilities. The group of cell-based resources allocated to the UE for the purpose of As shown, there are three categories of implementation: RRC configuration, MAC signaling, and L1 (PHY layer) signaling.

[0172] In a second class of embodiments for BFD management, the UE is configured to manage BFD If the UE's capabilities are exceeded, it applies one or more selection rules or procedures. For example, is expected to be a key enabler for multi-RAT (e.g., EN-DC) and / or multi-connectivity scenarios. This may occur in Rio, where RRC signaling (e.g., NR is LT The selection rules are handled in the LTE cell and limit coordination between the LTE cell and the NR cell. The procedure allows the UE to connect to a cell running BFD, BWP, and / or BFD-RS (configured Again, the UE capabilities related to BFD, NBI, and / or BFR are assessed. The power(s) may be per band, band combination, frequency range, and / or UE. Note that if there is a reported UE capability per band, the reported bands, band combinations, and frequency ranges to ensure that the advertised capabilities of each are not exceeded. Applying various embodiments that describe solutions for different ranges and / or UEs For example, consider a UE reporting per frequency band. (1) The maximum number of concurrent BFD-RS of the first type (e.g., periodic CSI-RS) and (2) the maximum number of concurrently on-BFD-RS of the second type (e.g., SSB). Next, various embodiments for managing the number of simultaneously on BFD-RS are described in terms of U It can be applied to each of the two frequency bands without exceeding the E capability. , UE capabilities reported separately for each RS type (e.g., periodic CSI-RS and SS Regarding B), next, the number of simultaneous on-BFD-RSs should be determined so as not to exceed the UE capacity per type. Various embodiments of the solution for managing the This can be done.

[0173] Alternative Embodiments of Network / UE-Based BFD Management

[0174] In various embodiments, the network (e.g., serving base station, gNB) may It tells the UE which cell is a BFD-cell, e.g. which cell is also a BFD-cell. show.

[0175] In various embodiments, the network may determine which of the BFD-RSs are on. Indicates to the UE whether it is BFD-RS.

[0176] In various embodiments, the UE may transmit the BFD-RS, other RS / signals, and / or measurements. Other time-frequency resources allocated for measurements, e.g., RSRP, RSRQ, SINR, RSSI. The UE receives the corresponding measurement results or The obtained information may be fed back to the network. Such information can then be used, like any other information, to determine which cells and / or It may decide whether to indicate FD-RS to the UE as on or off.

[0177] Alternative embodiment of network / UE-based BFD management based on RRC signaling

[0178] We divide this section into four categories, each of which we address in turn: (i) Cell-Level (ii) RRC configuration at BWP level; (iii) RRC configuration at cell and / or BWP level; BF enablement in WP, and (iv) BFD-RS level RRC configuration.

[0179] Cell-level RRC configuration

[0180] In various embodiments, the network uses RRC signaling to communicate with the BFD-cell. It indicates to the UE which cell among certain cells, for example, among on-cells, it is.

[0181] In various embodiments, the network may, if "BFD is enabled in the cell", In some embodiments, BFD is enabled in the cell and the cell If is in the ON state, the cell is a BFD-cell. If the cell is in the OFF state, cell R Even if BFD is activated in the RC configuration, the cell is not a BFD-cell.

[0182] FIG. 3 shows an example Venn diagram of various sets of cells. The sets are as seen from the UE's perspective. The entire rectangle represents the set of configured cells of the UE. In addition, the configured cells may be in either an on state or an off state in various embodiments. So either BFD is enabled or it is not enabled. , the subset of cells that enable BFD are, in various embodiments, BFD cells.

[0183] In various embodiments, ensuring that the number of BFD-cells does not exceed the capabilities of the UE This is left to the network, e.g., to enable BFD (e.g., M Limits the number of cells in the ON state (configured using AC CE or DCI signaling) A complementary approach is to After the transition, or at the transition, disable BFD in the cell with RRC signaling and / or Or to enable it.

[0184] BWP level RRC configuration

[0185] In various embodiments, the network may, if "BFD is enabled in BWP", In some embodiments, BFD is enabled with an active BWP. If the cell is in the ON state, the cell is a BFD-cell. If BFD is enabled, and / or if BFD is not enabled on the active BWP, the cell Not D-Cell.

[0186] In some embodiments, the network determines whether BFD is enabled in the cell, and , and the UE is informed by the RR whether BFD is enabled and / or disabled on one or more of its BWPs. In this situation, BFD is enabled on the cell and the cell is turned on. If BFD is enabled on the active BWP, the cell is a BFD-cell.

[0187] In various embodiments, the absence of RRC signaling, e.g., optional parameters or or the absence of an IE, e.g., a disabled BFD is used to deactivate the cell and / or the BWP default If in the default state, it indicates that BFD is disabled in the cell and / or BWP. obtain.

[0188] In various embodiments, the number of BFD-cells and / or BFD BWPs determines the capabilities of the UE. It is up to the network to ensure that the Enable FD (e.g., configured using MAC CE or DCI signaling) This can be achieved by limiting the number of ON-state cells / BWPs (selected). A common approach is to enable BFD on some BWP(s) and then Configure one or more BWPs in the cell so that they are overridden by other BWP(s). If the number of on-cells exceeds the BFD capability of the UE, the network BFD by activating BWP on a disabled BFD in a non-interactive cell. - The number of cells can be limited. In some embodiments, NBI and / or B If FR is enabled, i.e., RRC is configured with an active UL BWP of the same cell. If set up, BFD runs on the DL BWP of the cell.

[0189] Enabling BFD on the cell and / or BWP

[0190] In some embodiments, an explicit indication that BFD is enabled in a cell may be provided by cell R. Included in the RC configuration (e.g., ServingCellConfig IE), e.g., 1 bit This is an instruction from To.

[0191] In some embodiments, an explicit indication that BFD is enabled in BWP is provided by the BW P RRC settings (e.g., BWP-DownlinkDedicated, radioL inkMonitoringConfig, BWP-UplinkDedicated and / or BeamFailureRecoveryConfig IE), For example, a 1-bit instruction.

[0192] In various embodiments, for example, using explicit indication, BFD may be configured to It was shown to be enabled in BWP, but BFD-RS is not enabled for cells and / or BWP. If not explicitly configured as a CORESET, the UE shall Use BFD-RS implicitly defined through the current QCL configuration.

[0193] In some cases, one or more relevant IEs may be Cell Configuration and / or BWP Configuration, e.g. When included in the BFD, NBI and / or BFR configuration / setup, BFD: In some embodiments, BFD, NBI, and and / or BFRs are valid in at least one DL BWP and / or UL BWP. When enabled / setup / configured, BFD is enabled on the cell. In this state, BFD, NBI and / or BFR are used in conjunction with each configured DL BWP and / or If enabled / setup / configured on each configured UL BWP, BFD In some embodiments, the BFD, NBI and / or BFR are activated in one If BFD is enabled / setup / configured with more than one active BFD, e.g. Active DL enabled / set up / configured with BWP and / or NBI / BF If R is enabled / setup / configured with an active UL BWP, BFD It will be enabled.

[0194] In various embodiments, BFD is always enabled in the SpCell, e.g., BFD is All configured BWPs of the SpCell, as the case may be, are frequency band or range specific. It is only enabled in the FR2 region, for example.

[0195] BFD settings can be set to e.g. "beamFailure" and / or "both" and and / or "rlf" and / or set to another value associated with a valid BFD One or more RSs configured for beam fault detection using the objective parameters , RadioLinkMonitoringConfig IE and / or Radio RadioLinkMonitor with LinkMonitoringRS IE It may also be a BFD-RS configuration, such as the ingConfig IE. In this state, some objective parameter values, e.g. "beamFailure" and / or "both" is associated with enabled BFD, whereas " rlf" is associated with disabled BFD.

[0196] In various embodiments, for example, by using explicit instructions or By setup / existence of ioLinkMonitoringConfig IE, BFD is indicated as enabled in the cell and / or BWP, but BFD-RS is not enabled in the cell. If not explicitly configured for rule and / or BWP, the UE shall, as previously mentioned, Darkened through the current active QCL settings of the monitored CORESET(s). Uses the implicitly defined BFD-RS, while the For example, use the RadioLinkMonitoringRS IE to If RSs are explicitly configured, those explicitly defined BFD-RSs are used. .

[0197] The NBI and / or BFR configuration is based on the candidate RS configuration for NBI and / or BFRQ settings, e.g., BF such as dedicated resources such as CFRA, PUCCH, SR, etc. Resources for RQ and / or BFRR configuration, e.g., CORESET configuration and / or a search space for BFRR, etc.

[0198] In various embodiments, the BeamFailureRec Setting the overlyConfig IE or a similar IE specific to SCell BFR The up / presence indicates to the UE that BFD is enabled in the cell and / or BWP. will be done.

[0199] BFD-RS level RRC configuration

[0200] In various embodiments, the network may: In some embodiments, the BFD-RS is activated and the UE is notified by RRC signaling. If the BFD-RS is enabled and the corresponding cell is in the ON state, the BFD-RS is an ON BFD-RS. If the cell is in the OFF state, even if BFD-RS is activated in the cell RRC configuration, BFD-RS is not on-BFD-RS.

[0201] In various embodiments, the RRC signaling may be, for example, OringConfig IE's FalleDetectionResourcesTo Use the ReleaseList parameter to remove a previously explicitly configured BFD-RS In some embodiments, the BFD-RS can be used to release For example, BFD-RS indexes can be added to the list of indexes for suspension and / or activation. By including the ID (e.g., RadioLinkMonitoringRS-Id) Thus, it can be suspended and / or activated by RRC signaling. The BFD-RS is not monitored by the UE, i.e., it is an off BFD-RS. On the other hand, an activated BFD-RS is a signal that the corresponding cell is ON and / or BWP is Used for BFD when on, i.e., BFD-RS on. The advantage of using the suspend / activate parameters instead of up / add / modify / release is , the number of bits required is very small.

[0202] For example, for RRC parameters similar to: failureDetectionResourcesToSuspendList SEQUENCE SIZE(1..maxNrofFailureDetect ionResources)) OF RadioLinkMonitoringRS-Id OPTIONAL,-- Need M interrupted / BFD-RS index where activation state changes (RadioLinkMon In some embodiments, B FD-RS, for example, fallsDetectionResourcesToAdd It is activated by default after being configured using the ModList parameter.

[0203] In some embodiments, rather than a single list with state switching functionality, separate lists may be used. There is a suspend list and a separate activate list. The activated BFD-RS list(s) are specified in the RRC configuration per BWP, e.g. , included in RadioLinkMonitoringConfig in DL BWP configuration .

[0204] In some embodiments, the suspend / activate BFD-RS list(s) is the cell-level RRC configuration, e.g., included in the ServingCellConfig IE. In some embodiments, the suspended and / or activated BFD-RS list A specific BFD-RS index (e.g., RadioLi nkMonitoringRS-Id) indicates that the BFD-RS index is set. For each configured BWP, the corresponding BFD-RS index is suspended / activated. Become active.

[0205] In various embodiments, suspending and activating an implicitly configured BFD-RS For example, the suspension / activation mechanism may be implemented using the list(s) described above. In some embodiments, an explicitly configured BFD-RS is used. If not present, the index of the suspend / activate list(s) is COR ESET index, e.g., ControlResourceSetId parameter In various such embodiments, an implicit index corresponding to the CORESET index is If the configured BFD-RS is suspended, it is called Off BFD-RS. If activated, BFD-RS can be on, and if the cell is on, BWP is on. , and / or CORESET are monitored.

[0206] In various embodiments, it is possible to ensure that the number of on-BFD-RS does not exceed the capabilities of the UE. In various embodiments, the first RS type (e.g., For example, the number of BFD-RSs (periodic CSI-RS) is the same as the corresponding UE of the first RS type. It is up to the network to ensure that capacity is not exceeded. In this state, the number of on-BFD-RSs of the second RS type (e.g., SSB) is It is up to the network to ensure that the corresponding UE capabilities of the type are not exceeded. In some embodiments, this disrupts BFD-RS on-cell and off-cell. and / or activation.

[0207] In various embodiments, beam failure, such as whether or not a beam failure indication should be provided to higher layers, In the evaluation of the physical layer, only activated BFD-RS is used. In an embodiment, the on BFD-RSs are a subset of the activated BFD-RSs, e.g. For example, an activated BFD-RS on cell and / or on BWP. In some embodiments, activated BF in off-cell and / or off-BWP D-RS is off BFD-RS. Exemplary UE Procedures

[0208] Various embodiments of a UE procedure for maintaining a set of BFD cells are illustrated in the flowchart of FIG. Various embodiments may use only some of the steps and / or different steps. It involves executing steps in sequence. Step S401. At the start of the procedure, the UE notifies the network, e.g., may be connected to or may attempt to perform initial access to the SpCell. This step also determines whether the UE is configured to use one of the following methods related to BFD, NBI and / or BFR: This may include reporting the above UE capabilities to the network (e.g., gNB). Step S402. In this step, the set (or group) of cells including configuration, e.g., RRC configuration, whether the UE has received it from the network. In some embodiments, the configuration includes adding one or more cells. In some embodiments, the setting includes the release of one or more cells. If so, the process proceeds to step S403, but if not, the process proceeds to step S404. Proceed to matching. Step S403: In this step, the UE updates the set of configured cells. configuration, e.g., PCell changes, PSCell addition / release / changes, and / or SC When the UE receives an addition / release of ell(s) from the network, it Update the set of configured cells accordingly. a. In various embodiments, the release of a cell from the set of configured cells occurs after BFD is enabled. Other cell settings (singular or plural) such as cell on / off / disabled are released. This means that the UE can set various such states for such released cells. In one example, the set of cells that was first released and then set is not retained. Consider a BFD-enabled cell being added. After addition, the cell is, in various embodiments, D Not enabled, i.e., release and subsequent addition disables BFD. Step S404. In this step, the RRC configuration of the set of BFD-enabled cells is An inquiry is made as to whether E has been received from the network. The same reconfiguration message that adds a cell to the set of configured cells also causes the cell to be reconfigured. It may be configured with BFD enabled and / or disabled, e.g., to enable BFD, and / or disabling settings are included in the settings of the added cell. Already configured, e.g., already added cells, are added to the set of configured cells. After being added, it may be configured with BFD enabled and / or disabled, e.g., BF The settings to enable and / or disable D are included in the settings of the modified cell. If the response is affirmative, processing continues to step S405; if negative, processing continues to step S406. Proceed to 406 query. Step S405. The UE updates the set of BFD-enabled and / or disabled cells. If the UE receives a setting that changes the set, the UE updates the set. The cell count is not explicitly maintained in the UE, instead it is maintained for each configured cell and / or The BFD configuration for the configured BWP of the configured cell is maintained. Step S406. In this step, the cell state (single or multiple) between, for example, ON and OFF is determined. indicates a change in configuration, e.g., MAC CE and / or DCI, that the UE A query is made as to whether the data can be received from the network. If the answer is affirmative, processing continues to step S407; if the answer is negative, processing continues to step S408. Proceed to S408. Step S407. The UE receives a change in the cell state, e.g., a setting regarding on / off. If so, the UE shall update its on-cell set and / or its off-cell set accordingly. In various embodiments, such set(s) may be updated in the UE. Not explicitly persisted. Instead, the on / off state of each configured cell is persisted. Step S408. In various embodiments, steps S402 / 3, S404 / 5, and the order of steps S406 / 7 is different, e.g., step S406 / 7 on The / off setting must be received before BFD enable / disable in step S404 / 5. Note that in various embodiments, the UE may perform steps S402 to S407. The UE receives a subset of the configurations mentioned in step 1, e.g., the UE receives the on / off cell configuration. In various embodiments, the UE receives only the Any setting that influences the determination of the set of BFD cells, such as one or more of the settings in step 7. After receiving configuration from the network, it determines the set of BFD cells.

[0209] An additional embodiment of a UE procedure for maintaining a set of BFD cells is shown in FIG. 5. In addition to the steps described with respect to FIG. 4, various embodiments of steps are described below. Various embodiments may be implemented using the steps described with respect to FIG. 4 and the steps described with respect to FIG. Various embodiments may include combinations of only some of the steps. , and / or in a different order. Step S501. For the corresponding steps in the description of FIG. 4, please refer to the various descriptions. sea ​​bream. Step S502: In this step, the set BWP(s) (DL and and / or UL BWP(s)) An inquiry is made as to whether the UE has received an RC configuration from the network. In some embodiments, the configuration includes adding one or more BWPs. If the response to the query is affirmative, the setting includes the release of one or more BWPs. If so, the process proceeds to step S503, but if not, the process proceeds to step S504. Step S503: The UE updates the set of configured BWPs from the network. When a UE receives a BWP(s), e.g., adding / releasing / changing BWP(s), the UE Update the set of configured BWPs accordingly. a. In various embodiments, the release of a BWP from the set of configured BWPs is performed by the validity of the BFD. Other BWP settings (single or multiple) such as enable / disable, activate / deactivate ) is released, i.e., the UE must It does not maintain various such states. In one example, it is first released and then set. Consider a BFD-enabled BWP that is added back to the set of BWPs that have been added. After addition, the BWP In various embodiments, for example, the default state is disabled, so BFD Not enabled, i.e., release and subsequent addition disables BFD. Step S504. In this step, a session of BFD-enabled BWP(s) is created. A query is made as to whether the UE has received a UE configuration from the network. In some cases, the same reconfiguration message will add a BWP to the set of configured BWPs. Depending on the message, BWP may be configured with BFD enabled and / or disabled, e.g. The settings to enable and / or disable BFD are included in the BFD configuration. In some cases, already configured, e.g., already added BWPs may be After a BWP is added to the set of configured BWPs, it is For example, the setting to enable and / or disable BFD may be modified. If the response to the query is affirmative, the process continues. Proceed to step S505, and if negative, proceed to step S506. Step S505. The UE enables and / or disables BFD (single or multiple BWPs). If a configuration is received that updates the set of the number of the UEs, the UE updates the set. In this state, such a set is not explicitly maintained in the UE. Instead, each configured The BFD configuration for the BWP is maintained. Step S506. Please refer to the corresponding description in FIG. Step S507. Please refer to the corresponding description in FIG. Step S508. In this step, for example, activation / deactivation or A setting, e.g., M, indicating a change in BWP state(s), such as between on / off. The question of whether the UE receives AC CE and / or DCI from the network If the response to the inquiry is affirmative, the process continues to step S5. If the answer is negative, the process proceeds to S510. Step S509. If the UE receives a configuration about changing the state of the BWP, the UE: Sets of BWPs in different states, e.g., set of activated BWPs, set of inactive BWPs Set of BWPs, set of ON BWPs, and / or set of OFF BWPs Such a set does not need to be explicitly maintained by the UE. Note again that instead the UE maintains a per-BWP state (e.g., activated or The user may maintain the current state (either active or inactive). Step S510. In various embodiments, steps S502 / 3, S504 / 5, Step S506 / 7 and Step S508 / 9 are in different order, e.g. For example, the on / off setting in step S506 / 7 is related to the BFD enablement in step S504 / 5. Note that the step 1000 is received prior to the step 1000 / deactivation. Receive a subset of the settings described in steps S502 to S509, e.g. For example, the UE only receives BWP activation / deactivation for a specific cell. . In various embodiments, the UE may perform steps S502 to S509. Network settings that affect the determination of the set of BFD cells, such as one or more of the settings in Determines the set of BFD cells after receiving configuration from

[0210] It is noted that among the various procedures, the UE performs BFD on a set of BFD cells. In various embodiments, implementing BFD includes, for example, implementing BFD in accordance with the 3GPP RAN4 standard. This means that BFD is implemented in accordance with the corresponding requirements and in such a way that the corresponding requirements are met. do.

[0211] Activating / Deactivating a Cell

[0212] MAC for activation / deactivation of a cell, e.g., SCell in this example An exemplary portion of the procedure is given below. For each configured SCell, the MAC entity does the following: 1> SCell activation / deactivation MAC CE is received and SCell is activated. When you activate 2> Activate the SCell, i.e., normal SCell behavior, including: Apply, 3> If configured, perform beam failure detection on the SCell. 1> Otherwise, receive SCell activation / deactivation MAC CE If so, deactivate the SCell, or 1> sCellDeactivation associated with activated SCell If onTimer expires, 2> Deactivate SCell, 1>When deactivating a SCell, 2>Do not perform beam obstruction detection on SCell, In other embodiments, the above "beam failure detection" may be replaced with "beam failure detection and recovery" or In another embodiment, the above "configured" "RadioLinkMonitoringConfig was set", " "BeamFailureRecoveryConfig is set", "BeamFa ilureRecoveryConfig and RadioLinkMonitorin gConfig was set", "BeamFailureRecoveryConfig g or RadioLinkMonitoringConfig was set, or Replaced with "enabled".

[0213] Alternative embodiment of network / UE-based BFD management based on MAC signaling

[0214] MAC CE for BFD activation / deactivation

[0215] In various embodiments, BFD in a cell and / or BWP uses MAC CE. can be activated and / or deactivated by

[0216] In various embodiments, the BFD activation / deactivation MAC CE A sequence of fields, e.g., a bitmap, where different fields, e.g., bits, A different cell index, e.g., SCellIndex or ServCellInd In some embodiments, Bi corresponds to the i-th field, e.g., the i-th In some embodiments, Bi represents the i-th bit of an N-bit field. For example, the MAC entity with cell index i If there is a cell, e.g., SCell, this field / bit has index i Indicates MAC CE activation / deactivation of BFD for the cell. The field / bit indicates that BFD is activated on the cell with index i. Set to "1" to indicate BFD is deactivated on the cell with index i It is set to "0" to indicate that

[0217] In various embodiments, the MA in which the cell is in the ON state and BFD is activated on the cell. If the cell is a C CE, the cell is a BFD-cell. state and / or the MAC CE with BFD deactivated in the cell, The cell is not a BFD-cell.

[0218] In various embodiments, the B Enabling BFD is done by using the MAC CE to activate / deactivate BFD. In various embodiments, the cell has BFD enabled and BFD is enabled. The cell is a BFD cell if and only if the MAC CE is an activated MAC CE. In various embodiments, even if a cell does not have BFD enabled, e.g., by default and BFD and / or implicit BFD, NBI and / or BFR configurations If the MAC CE is activating, the cell is a BFD cell. In the embodiment, each configured cell is an enabled BFD.

[0219] In some embodiments, the default BFD MAC CE state is For example, if BFD is enabled but the MAC CE BFD is not activated / deactivated In other embodiments, the BWP is deactivated for the activated cell / BWP. is activated.

[0220] Figure 6(a) and Figure 6(b) show the set of BFD-enabled cells and the MAC CE. The various implementations of the set of BFD cells associated with the set of BFD-activated cells. An embodiment will be described.

[0221] In Figure 6(a), the set of BFD cells is divided into the set of BFD-enabled cells and the set of activated The intersection of the set of cells with the associated BFD MAC CE. , e.g., in the RRC configuration of BFD, NBI and / or BFR, and / or RR BFD is enabled according to the various embodiments previously described for C signaling. If so, the cell is a BFD cell.

[0222] In Figure 6(b), the set of BFD cells is a set of cells with some of these cells enabled for BFD. At least the set of cells that are BFD-activated MAC CEs. , according to various embodiments, a default, e.g., implicitly defined BFR-RS and / or by applying implicit settings / parameter(s), BFD is enabled using the corresponding BFD, NBI and / or BFR RRC configuration. A non-BFD cell may perform BFD, NBI and / or BFR.

[0223] In some embodiments, the activation / deactivation of BFD for a cell is determined by whether BFD is It means that it is activated / deactivated with the active BWP of the cell, i.e. ,Different BWPs in a cell maintain different BFD activation / deactivation states. In some embodiments, a BFD-cell (or a non-BFD-cell) can be, for example, For example, the old and new BWPs of a cell are activated and deactivated, respectively. If the BFD-cells are enabled, the BWP switch switches to non-BFD-cells (or BFD-cells). In various embodiments, when the cell is in the ON state and the active BW of the cell is If P is a BFD-activated MAC CE, the cell is a BFD-cell. If the cell is in the OFF state and / or the BFD in the active BWP of the cell is in the If the MAC CE is an activated MAC CE, the cell is not a BFD-cell. In this embodiment, the RRC is configured to activate / deactivate the MAC CE BFD. The default BFD MAC CE state for unactivated BWP is deactivated, In other embodiments, it is activated.

[0224] In various embodiments, the MAC CE for BFD activation / deactivation: It is separate from the MAC CE for SCell activation / deactivation. In one embodiment, the MAC CE for BFD activation / deactivation is the SCe Combined with MAC CE for activation / deactivation and / or are jointly encoded.

[0225] In various embodiments, a joint SCell and BFD activation / deactivation MA A CCE consists of a sequence of fields, e.g., bitmaps, and can be used to represent different fields. The fields, e.g., bits, correspond to different cell indices, e.g., SCellIndex or corresponds to the ServCellIndex. For example, Bi is the i-th field, e.g. Let i denote the i-th bit. For example, the MAC entity with cell index i If there is a cell configured for the index, e.g., SCell, this field indicates the SCell and BFD activation / deactivation of the cell with cluster i.

[0226] In various embodiments, a joint SCell and BFD activation / deactivation MA A C CE consists of a field, e.g., a sequence of values, and different values ​​are represented by different cells. Corresponds to an index, e.g., SCellIndex or ServCellIndex For example, let Bi represent the i-th value.

[0227] Example values ​​for the Bi field / values ​​and corresponding states are shown in Tables 2 and 3 below. 3. Regarding the off cell state, since BFD is not supported in that state, The BFD activation / deactivation information is not used. In the example in Table 2, the deactivation The only SCell state that is deactivated is the OFF state, and in the example in Table 3, Both the cell state and the idle cell state are the off state. CE) and is in ON state, and BFD active (at MAC CE) If it is, the cell is a BFD cell; otherwise, it is not a BFD cell.

[0228] [Table 2]

[0229] [Table 3]

[0230] In various embodiments, the MAC CE for BFD activation / deactivation is , a sequence of fields, where different fields represent different cells. Ba, B i Let denote the i-th field, where i=0,...,N-1. In some embodiments, Field B iis a single cell index, e.g., SCellI It can indicate the index or ServCellIndex. The CE can indicate up to N cell indices. In this case, various embodiments may use the BFD activation / deactivation state of the cell. If no cell index is indicated, the cell's BFD active In some embodiments, the field B i The cell index and BFD activation / deactivation state, e.g., It may contain both activation and deactivation bits.

[0231] In some embodiments, the MAC CE for BFD activation / deactivation refers to the BFD activation / deactivation in the cell in which it is received. In an embodiment, another cell, for example, all configured cells (or SCells), or indicates the BFD activation / deactivation status for all activated cells (or SCells). Refers to activation.

[0232] By introducing BFD activation / deactivation in the MAC CE, The network can control the set of activated / deactivated SCells. Therefore, the network can allocate a set of BFD cells in a similar manner, e.g., dynamically, and in a similar order. This allows the network to be controlled by BFD overhead and latency. This can efficiently ensure that the UE's capabilities for

[0233] MAC CE for BFD-RS Activation / Deactivation

[0234] In various embodiments, a MAC CE may be configured to activate an individual or set of BFD-RS. For example, the larger BFD-RS A suitable set can be configured for the cell and / or BWP by RRC signalling. A subset of these BFD-RS can be configured to activate / deactivate BFD-RS. Activated MAC CE can select for cell and / or BWP In some embodiments, the RRC may configure a set of one or more BFD-RSs. These can be activated / deactivated by MAC CE. In some embodiments, the set is limited to a single BWP. A set consists of one or more BWPs in one or more cells. (or multiple).

[0235] In some embodiments, the BFD-RS activation / deactivation MAC CE and / or the corresponding cell is ON, and / or BFD-RS is on if the corresponding BWP is on.

[0236] In some embodiments, the BFD-RS activation / deactivation MAC CE ,contains a sequence of fields, e.g., a bitmap, and each field,is a BFD-R corresponds to S (or a set thereof). For example, B i Let denote the i-th field and i=0,...,N-1. In some embodiments, field B i is one BFD-RS index (or BFD-RS set index) of, e.g., R adioLinkMonitoringRS-Id (explicit BFD-RS), or C ControlResourceSetId (implicit BFD-RS) Therefore, the MAC CE can use up to N BFD-RS indices (or BFD -RS Set Index) can be used to indicate the BFD-RS Index (or B When a FD-RS set index is indicated, this is, in various embodiments, a BFD -Toggles the activation / deactivation state of an RS (or BFD-RS set) If the BFD-RS index (or BFD-RS set) is not indicated, If so, the BFD-RS (or BFD-RS set) In various embodiments, the activation / deactivation state can be maintained. , Field B i activates / deactivates BFD-RS (or BFD-RS set). It may contain a bit representing the activation state, e.g., activated or deactivated. In some embodiments, Field B i is the BFD-RS index (or BFD-RS set index), and BFD-RS (or BFD-RS set) Activation / deactivation state, e.g., representing activation or deactivation In some embodiments, the activated BFD may include both -RS set means that all BFD-RS in the set are activated A deactivated and / or inactivated BFD-RS set is a set of all BFD-RS This means that the FD-RS is deactivated.

[0237] In some embodiments, the activation / deactivation of a BFD-RS (or set thereof) The MAC CE for activation shall use the BFD-RS (or its In some embodiments, the activation / deactivation of another cell, For example, BFD-RS on all configured cells or on all activated cells (or a set thereof) refers to activation / deactivation. The BFD-RS activation / deactivation MAC CE can be configured within the frequency band, e.g. The frequency band or combination of bands or frequency range in which the MAC CE is received, Activate / deactivate a BFD-RS or set(s) of BFD-RS. It can be activated.

[0238] In various embodiments, the BFD-RS (or set thereof) activation / deactivation The MAC CE for the encapsulation uses an explicitly RRC-configured BFD-RS (or a set of ) to activate and / or deactivate BFD-R. The MAC CE for S (or a set of S) is one or more monitored CORESETs. one or more RSs currently configured / directed / activated as QCLs with Implicitly activates and / or disables the RRC configured BFD-RS (or a set of them). In some embodiments, the monitored CORESET is is the CORESET associated with the search space to be monitored.

[0239] In various embodiments, the MAC CE for the TCI status indication of the UE specific PDCCH is: Implicitly configured using MAC CE for UE-specific PDCCH TCI status indication To activate / deactivate (or turn on / off) BFD for the associated BFD-RS In some embodiments, the MAC CE for TCI status indication is used for encryption. The implicitly configured BFD-RS is activated / deactivated or turned on / off. It may be turned off (e.g., through an explicit activation or deactivation instruction) or toggle state (or not) In some embodiments, the already activated CORESET and TCI state for UE-specific PDCCH that activates the TCI state for the cell Receipt of a MAC CE for an indication causes the corresponding implicitly configured BFD-RS state Toggle (between activate / deactivate or on / off). Various implementations In this state, the RRC configuration of the TCI state is implicitly configured using the TCI state. Indication of whether RS ​​should be activated / deactivated or turned on / off , for example, bits, for example, in the QCL information IE.

[0240] Exemplary UE Procedures

[0241] Various embodiments of the UE procedure for maintaining the set of BFD cells are shown in FIG. The numbered steps in the flowchart are described below. Various embodiments are , including only some of the steps and / or in a different order. In addition to the steps described above, various embodiments of the steps are described below. The embodiment may include the step embodiments described with respect to FIG. 4 and / or FIG. 5 and the step embodiments described with respect to FIG. This includes combinations of the steps described above. Step S701. For a description of Figures 4 and / or 5, see various embodiments. I want to be done that. Step S702. See various embodiments for a description of Figures 4 and / or 5. I want to be done that. Step S703. See various embodiments for a description of Figures 4 and / or 5. I want to be done that. Step S704. See various embodiments for a description of Figures 4 and / or 5. I want to be done that. Step S705. See various embodiments for a description of Figures 4 and / or 5. I want to be done that. Step S706. See various embodiments for a description of Figures 4 and / or 5. I want to be done that. Step S707. See various embodiments for a description of Figures 4 and / or 5. I want to be done that. Step S708. BFD, NBI, and / or BFR for one or more cells Indicates activation and / or deactivation of settings, e.g., MAC CE and A query is made as to whether the UE receives the UE-ID and / or DCI from the network. If the inquiry is answered in the affirmative, processing continues to step S709; If so, the process proceeds to S710. Step S709: The UE activates / deactivates BFD / NBI / BFR. If the UE receives the relevant configuration, it shall configure the set of BFD activation cells and In various embodiments, such a cell may be updated. The set(s) are not explicitly maintained in the UE. Instead, each configured The BFD activation / deactivation state of the connected and / or connected cells is maintained. . Step S710. In various embodiments, steps S702 / 3, S704 / 5. The order of steps S706 / 7 and S708 / 9 is different, e.g. The ON / OFF setting in step S706 / 7 corresponds to the BFD enable / disable setting in step S704 / 5. Note that the received signal is received prior to the initialization of step S7. 02 to receive a subset of the settings mentioned in step S709, e.g. The UE only receives the on / off cell configuration.

[0242] In various embodiments, the UE may perform steps S702 to S709. Network settings that affect the determination of the set of BFD cells, such as one or more of the settings in Determines the set of BFD cells after receiving configuration from

[0243] An additional embodiment of a UE procedure for maintaining a set of BFD cells is shown in Figure 8. In addition to the steps described for Figures 4, 5, and 7, Various embodiments are described below. Various embodiments may be implemented by performing the steps described with respect to FIG. This includes combinations of the embodiments and the step embodiments described with respect to FIG. Configurations may include only some of the steps and / or in a different order. Step S801. For a description of Figures 4 and / or 5, see various embodiments. I want to be done that. Step S802. See various embodiments for a description of Figures 4 and / or 5. I want to be done that. Step S803. For a description of Figures 4 and / or 5, see various embodiments. I want to be done that. Step S804. See various embodiments for a description of Figures 4 and / or 5. I want to be done that. Step S805. See various embodiments for a description of Figures 4 and / or 5. I want to be done that. Step S806. See various embodiments for a description of Figures 4 and / or 5. I want to be done that. Step S807. See various embodiments for a description of Figures 4 and / or 5. I want to be done that. Step S808. For a description of FIG. 5, please refer to various embodiments. Step S809. For a description of FIG. 5, please refer to various embodiments. Step S810. Please refer to various embodiments for the description of FIG. Step S811. Please refer to various embodiments for the description of FIG. 12 In various embodiments, steps S802 / 3, S804 / 5, and S806 The order of steps S806 / 7, S808 / 9, and S810 / 11 For example, the ON / OFF setting in step S806 / 7 is different from the ON / OFF setting in step S804 / 5. Note that this is received prior to BFD enablement / disablement. E is a subset of the settings described in steps S802 to S811. For example, the UE may receive a BWP activation / deactivation notification for a particular cell. Receive the message.

[0244] In various embodiments, the UE may select one of the settings in steps 2 to 11. Received configuration from the network that influences the set of BFD cells, such as Later, the set of BFD cells is determined.

[0245] (Activate / Deactivate Cell) MAC for activation / deactivation of a cell, e.g., SCell in this example An exemplary portion of the procedure is given below. For each configured SCell, the MAC entity: 1> SCell activation / deactivation MAC CE is received and SCell is activated. When you activate 2> Activate the SCell, i.e., normal SCell behavior, including: Apply, 3> If activated, perform beam failure detection on the SCell. 1> Otherwise, SCell activation / deactivation MAC CE is received If so, deactivate the SCell, or 1> sCellDeactivation associated with activated SCell If onTimer expires, 2> Deactivate SCell, 1>When a SCell is deactivated, 2>Do not perform beam obstruction detection on SCell. Please note that "activation" in the above example refers to "beam obstruction detection" In another embodiment, the "beam failure detection" in the above embodiment may be replaced by "beam failure detection and recovery." " or "Beam Fault Detection and Recovery Procedure."

[0246] (Activate / Deactivate BFD) An example portion of the MAC procedure for BFD activation / deactivation is shown in this example Now, for SCell, the following is shown. For each configured SCell, the MAC entity: 1> SCell beam failure detection activation / deactivation MAC CE is received, When SCell beam failure detection is activated, 2> Activate SCell beam failure detection, 1> Otherwise, SCell beam failure recovery activation / deactivation MAC When receiving a CE and deactivating SCell beam failure detection, 2> Deactivate SCell beam failure detection, 1>When SCell beam failure detection is activated, and 1>When activating SCell, 2>Perform beam obstruction detection on SCell. 1> Otherwise, when deactivating the SCell, 2>Do not perform beam obstruction detection on SCell. In another embodiment, the "beam failure detection" in the above embodiment may be replaced with "beam failure detection and recovery" " or "Beam Fault Detection and Recovery Procedure."

[0247] Alternative embodiment of network / UE-based BFD management based on L1 signaling

[0248] In various embodiments, the L1 signaling may be, for example, a single bit parameter. Activate BFD on the cell and / or BWP for more than one UE(s) In various embodiments, L1 signaling is used to: For example, a single bit parameter may be used to determine the cell and and / or used to turn BFD on / off in BWP.

[0249] In various embodiments, the L1 signaling includes one or more parameters in the DCI, C Parameters used to scramble the RC (e.g., RNTI), sequence Generate a DMRS sequence, a preamble sequence, etc., In various embodiments, the L1 signaling includes parameters used to synchronize the ,BFD activated / deactivated / on / off, cell and / or BWP are received in the same cell and / or BWP. For example, L1 signaling may include a carrier indicator (singular or L1 by including (singular or plural) and / or BWP indicator(s) One or more cells (single or multiple) different from the cell in which the signaling was received and / or the BWP refers to BFD with BWP(s) and / or BWP(s).

[0250] L1 indicates the cell state for one or more UEs, e.g., a cell state index, e.g. For example, from the set states listed in Table 4, Table 5 or Table 6, or from a subset thereof. or other conditions not listed in Table 4, Table 5, or Table 6, plus any subset thereof Use one of these states.

[0251] [Table 4]

[0252] [Table 5]

[0253] [Table 6]

[0254] In various embodiments, the title lines of Tables 4, 5 and 6 read "BWP State Index" "BFD BWP?" and / or "BFD BWP?".

[0255] In various embodiments, for example, L1 signaling according to the above embodiments may be active This refers to BFD on BWP, e.g. L1 signaling has BFD on active BWP. Enable / disable / on / off. In various embodiments, the BWPs are in the same cell and and / or the same BWP in which the L1 signaling is received. BWP is e.g., a carrier indicator and / or BWP indicator for L1 signaling. Indicated by the indicator, it may be in a different cell and / or a different BWP. In an embodiment, the L1 signaling indicates the BWP switch and also indicates the BWP to which the UE is switching. It also shows how to turn BFD on or off in WP.

[0256] In various embodiments, L1 signaling, e.g., DCI, may be used for BFD-RS individual or can be used to turn a set or sets on or off. For example, a larger set of BFD-RS can be used for RRC and / or MAC CE signaling. can be configured for cells and / or BWPs by A subset of S is selected for cells and / or BWPs by L1 signaling. In some embodiments, the RRC and / or MAC CE may You can configure more than one set of BFD-RS and use them individually with L1 signaling. For example, L1 signaling can be turned on / off via RRC and / or MA. You can select one set from one or more sets configured by the C CE. In some embodiments, the null set can be determined by the RRC and / or MAC CE. and can be selected by L1 signaling. , empty set, not explicitly configured by RRC and / or MAC CE Nevertheless, the selection can be made by L1 signaling. In this case, selecting the empty set of BFD-RS means that the BFD In various embodiments, the set of ON BFD-RSs may be, for example, For example, DL BWP RRC such as RadioLinkMonitoringConfig In the configuration, the BFD-RS is either from an explicitly configured set of BFD-RS or from an explicitly configured RRC set. From the subset of BFD-RSs specified, a BFD-RS is indicated / selected by L1 signaling, Here, the subset is selected by MAC CE signaling. In this state, the set of BFD-RSs indicated / selected by L1 signaling is implicit. A set of BFD-RSs that are specifically defined, e.g., monitored CORESETs (singular or multiple) and an RS currently shown to be a QCL. A set is limited to a single BWP. In some embodiments, a set is limited to one or more One or more BWP(s) of the cell, e.g., frequency band, frequency band combinations and / or frequency ranges.

[0257] In some embodiments, the indicated / selected BFD-RS by L1 signaling The set(s) must be configured such that all BFD-RS in the set are enabled or on. On the other hand, the BFD-RS is not indicated / selected by L1 signaling. Other sets (or sets) that are not configured with BFD-RS are either disabled or disabled. means it is off.

[0258] Exemplary UE Procedures

[0259] Various embodiments of the UE procedure for selecting a set of on-BFD-RSs are shown in FIG. The numbered steps in the flowchart are explained below. The embodiments may include only some of the steps and / or in a different order. Step S901. For a description of Figures 4 and / or 5, see various embodiments. I want to be done that. Step S902. See various embodiments for a description of Figures 4 and / or 5. I want to be done that. Step S903. See various embodiments for a description of Figures 4 and / or 5. I want to be done that. Step S904. According to various embodiments, a BFD-RS or a set of BFD-RS The settings, for example, are configured explicitly or implicitly by RRC for each DL BWP. A query is made as to whether the UE is receiving from the network. In this case, the UE also selects a subset of BFD-RSs from the RRC-configured set of BFD-RSs. If the response to the query is positive, the MAC CE also receives a request to select the If the answer is negative, the process proceeds to step S906. Step S905. The UE updates the set of BFD-RSs based on the received RRC configuration. A subset of BFD-RS based on new and / or received MAC CE configuration Update. Step S906. See various embodiments for a description of Figures 4 and / or 5. I want to be done that. Step S907. See various embodiments for a description of Figures 4 and / or 5. I want to be done that. Step S908. The BFD, NBI, and / or BFR for one or more cells Indicates activation and / or deactivation of settings, e.g., MAC CE and A query is made as to whether the UE receives the UE-ID and / or DCI from the network. If the response is affirmative, the process proceeds to step S909, but if the response is negative, The process proceeds to S910. Step S909: The UE activates / deactivates BFD / NBI / BFR. If the UE receives the relevant configuration, it shall configure the set of BFD activation cells and In various embodiments, such a cell may be updated. The set(s) are not explicitly maintained in the UE. Instead, each configured The BFD activation / deactivation state of the connected and / or connected cells is maintained. . Step S910. In various embodiments, steps S902 / 3, S904 / 5, Step S906 / 7 and Step S908 / 9 are in different order, e.g. For example, the ON / OFF setting in step S906 / 7 is more important than the BFD setting in step S904 / 5. Note that the received signal is received before step S902. Receive a subset of the configurations mentioned in step S909 from the UE, e.g. receives only the on / off cell settings. In various embodiments, the UE may be configured to receive the BWP signal from an activated BWP, e.g., a BWP signal in an on-cell. Receive a DCI, which indicates a set of BFD-RSs. For example, the DCI can be used in various implementations. According to the embodiment, which of the BFD-RSs configured in step S904 / 5 is currently active The DCI also indicates, explicitly or implicitly, which BFD-RS is off. It may also be shown explicitly. Step S911. If the UE receives the configuration of ON BFD-RS in the DCI, the UE The DCI updates the set of ON BFD-RSs, according to various embodiments. Which of the BFD-RSs configured in step S904 / 5 is currently ON? In various embodiments, the DCI may be transmitted to the same BWP, The BFD-RS may be turned on / off in certain channels and / or bands.

[0260] Alternative Embodiments of UE-Based Selection Rules / Procedures / Criteria for BFD Management

[0261] In various embodiments, the set of BFD-cells and / or the set of on-BFD-RSs The selection is performed by the UE. In some embodiments, the selection is performed by, for example, a technical specification. as specified in your customer documentation and / or configured by your network. based on predefined rules and / or procedures. The parameters used in such rules and / or procedures are predefined. In this embodiment, the parameters used in such rules and / or procedures may be, for example, For example, by the network using RRC, MAC and / or L1 signaling. In various embodiments, the selection is left partially or completely to the UE implementation. For example, criteria, e.g., thresholds, may be predefined and / or set. ,select from among cells and / or BFD-RS that meet the criteria, e.g., exceeding a threshold. It is up to the UE implementation to decide.

[0262] In various embodiments, multiple selection rules / procedures are supported and the network may Configure which rules / procedures to use, potentially including a set of parameters to

[0263] In various embodiments, the present disclosure may be implemented using the same or similar technology as shown in, for example, FIGS. 5, 6, 8, and 9. According to various embodiments described herein, the UE may respond to various settings from the network. For example, a cell / BWP with enabled BFD, configured in such a cell / BWP The BFD-RS, the set of on-cells, the set of on-BWPs, and / or the BFD Set of activation cells / BWPs, such as BFD cells / BWPs, BFD-RS, first Determine a first set of BFD-RS of a type and / or BFD-RS of a second type Such first determined BFD cell, BWP and / or BFD-RS cell If the set does not exceed the associated BFD-related UE capabilities, the UE shall transfer the first set to BFD. Use (e.g., as BFD cells, BFD BWP and / or on BFD-RS) ). The first such determined BFD cell, BWP and / or BFD-RS set If the number of BFD cells exceeds the associated UE capability, the UE shall use BFD cells, BBP and Apply selection rules / procedures / criteria to determine the second set of BFD-RS and / or BFD-RS. The UE then does not use the first set for BFD, but instead uses the Therefore, a second set is used for BFD (e.g., BFD cells, BFD B WP and / or on BFD-RS). UE capabilities include frequency bands, combinations of frequency bands, The selection rules / procedures / criteria are based on the frequency combination and / or the UE. Applied per band, combination of frequency bands and / or UE. In this state, BFD-related UE capabilities are separated into components (single In this case, the selection rules / procedures / criteria depend on the UE capabilities (or (any component) to ensure that the per-band and per-UE capabilities are not exceeded. It may be applied taking into account both abilities.

[0264] Cell / BWP selection rules / procedures

[0265] In various embodiments, a UE has more enabled BFDs than its UE capabilities. May be configured in the cell and / or BWP. In some cases, enabled BF The number of on-cells (e.g., the first set of BFD cells) with D indicates the corresponding UE capability. In some cases, the number of active BWPs with enabled BFDs exceeds the corresponding In some cases, the on-cell , in a frequency band combination or for a UE, that has BFD enabled. The first type of BFD-RS (e.g., periodic CSI) over all active BWPs -RS) exceeds the corresponding UE capabilities. For example, in a frequency band, in a combination of frequency bands, or for a UE, A second type of BFD-RS ( For example, the number of SSBs exceeds the UE's capabilities. For example, in a frequency band, in a combination of frequency bands, or for a UE BFD-RS across all active BWPs with enabled BFD (e.g. , periodic CSI-RS and SSB) exceeds the corresponding UE capability.

[0266] In various embodiments, the UE may be enabled to not exceed the corresponding BFD UE capabilities. A subset of on-cells and / or active BWPs with BFDs configured is called BFD- In various embodiments, the set of selected BFD-cells is The size is consistent with the corresponding UE capabilities, e.g., simply does not exceed the capabilities. The UE will not use BFD if the number of on-cells with enabled BFD does not exceed the UE capability. D - Do not select a set of cells. In various embodiments, the selection rule is Even if enforced by E, the set of selected BFD-cells is not known to the network. are predefined so that

[0267] In various embodiments, the first set of BFD cells is ON For example, BFD enabled (e.g., by RRC configuration) and / or (e.g., by MAC CE) Therefore, the set of simultaneous ON cells with activated BFDs. In this state, the set of BFD-cells is C BFD For example, the second set of BFD cells is It is.

[0268] In various embodiments, for example, the UE capabilities may include BFD cell and / or BFD BWP. If it is the maximum number of forms, C BFD The maximum size of the UE capability is C max It is expressed as follows. In various embodiments, |C ON |≦C max If , i.e., does not exceed UE capabilities, U E is C BFD =C ON (where |C| represents the size of the set C), while , |C ON |>C max In this case, the UE may, for example, perform the following steps according to various embodiments: BFD C ON In various embodiments, |C BFD |=C m ax , or |C BFD | <C max、 or |C BFD |≦C max Select so that will be done.

[0269] In various embodiments, the UE capabilities may be of two types, e.g., a first or second type. across the network, by frequency band, by band combination, by UE, or any combination thereof This is the maximum number of combinations of BFD-RS. BFD The maximum size of any cell / Whether a BWP is selected and the BFD-RS (e.g. (e.g., the first type, the second type, and / or a combination of the two types) It may depend on the number of D max,i shall denote the BFD-related UE capabilities, where Let i be the ability index or the index between ability components. For the second ability, function Capi (C) can be defined, which is the cell / BW Map the set of P to the value corresponding to the i-th ability score, i.e., C api (C) can be directly compared to the performance score. Consider the UE's capabilities in the form of the maximum number of BFD-RS of each type (e.g., periodic CSI-RS). As an example, if the maximum ability value is 8 and the ability has index i=1, D max,2 = 8. In this embodiment, C ap2 (C) The set of selected cells , according to the number of BFD-RS of the first type in the frequency band, i.e., according to the UE capabilities For example, C ap2 (C ON )=12 is set C ON Among the cells in This means that there are a total of 12 BFD-RS of the first type configured in the frequency band. In another example where the UE capability is in the form of a maximum number of BFD cells, the mapping function may be Similar to the example in the previous paragraph, i.e., C api (C)=|C| may also be true.

[0270] In various embodiments, for each index i corresponding to a BFD-related UE capability, C api (C ON )≦D max,i If ,i.e., does not exceed the UE capability, the UE is C BFD =C ON Meanwhile, some BFD-related UE capabilities are supported. For some index i, C api (C ON )>D max,i In this case, the UE For example, according to various embodiments below, BFD CON Select as a subset of In various embodiments, various combinations of index i corresponding to BFD-related UE capabilities are used. In total, C api (C BFD )=D max,i , or C api (C BFD ) <D ma x,i , or Ca pi (C BFD )≦D max,i is selected so that

[0271] In the following description of the embodiments, the selection rules / procedures / criteria for multiple cells and / or BWPs are The UE capabilities in the form of maximum number of BFD cells and / or BFD BWPs are explained. A force-based example is given, i.e., in the above example, C max For brevity, In addition, other forms of BFD-related UE capabilities, i.e., D in the above example, max,i Other than having Examples of cell and / or BWP selection rules / procedures / criteria are not shown. For example, as outlined above, |C| api (C) to C max D ma x,i By replacing it with The same is applicable to scenarios.

[0272] Selection based on cell / BWP index

[0273] In various embodiments, C ON Cell index and / or active B of the cell in WP index, e.g., ServingCellIndex or SCellInd According to ex, UE, C ONC as a subset of BFD For example, select at least and / or having the highest cell index(ies), C ON Cells in, e.g. For example, C max The cell is C BFD Included in.

[0274] The motivation for using such a selection method is its simplicity and the fact that the cells and cell indexes The established relationship between the BWP and the BWP index UE is C BFD The advantage of this is that the network can control the order / priority of the cells included in the For example, the cell with the lowest cell index is the cell that the UE is using as the C BFD If included in The network assigns the lowest cell interface to the cell in which the network prefers the UE to run BFD. An index can be assigned.

[0275] Selection based on time in cell / BWP state

[0276] In various embodiments, the UE may determine whether the cell / BWP is in the current cell / BWP state for the duration of the cell / BWP. According to the interval, C ON C as a subset of BFD For example, in the current state C ON Cells / BWPs within, e.g., C m ax The cell is C BFD In various embodiments, the cell / BWP is in the ON state. The duration of time considered is where the ON state can be one or more states, e.g., activated The states may include a locked state and a resting state.

[0277] The cells that are in the on state for a long time are called CBFD The motivation for including it is that such cells It is used as a form of anchor cell with relatively frequent transmissions that can contain control information. On the other hand, cells that are on for a short time are more likely to have a high UE traffic load. They are used as a form of data booster cells that switch state more frequently depending on the load. It is highly likely that

[0278] Selection based on inactivity time in cell / BWP

[0279] In various embodiments, the UE may be configured to have one or more inactive states in the cell and / or BWP. According to the duration(s), C ON C as a subset of BFD Select Example For example, C, which has the longest and / or shortest inactivity ON Cells / BWPs within, e.g. , C max Cell / BWP is C BFD Included in.

[0280] The cell inactivity time can be determined, for example, as specified in [3GPP Technical Specification 38.321, V15 sC, as defined in § 38.321, i.e., § 38.321. It may be similar to the ellDeactivationTimer timer. The inactivity timer is, for example, bwp-I, as defined in [38.321]. Could be similar to the inactivityTimer timer. First cell / BWP Various embodiments of the inactivity time in the It is between. PDCCH (e.g., C-RNTI and / or CS-RNTI) in the first cell / BWP TI) indicates an uplink grant or a downlink allocation. their time, and / or The PDCCH of the second cell that schedules the first cell is the time since the indication of the uplink grant or downlink allocation, and / or , In the first cell, a MAC PDU is sent with the configured uplink grant, if or the time since the configured downlink allocation was received, and / or The time since the DL BWP and / or UL BWP was switched in the first cell, etc. Rabiini / or, · Time since the cell state of the first cell changed.

[0281] Cells with long inactive times BFD The motivation for including it is e.g. If transmission and / or reporting of semi-persistent beam management RS is used, The system manager may also be inactive for a long period of time. Rather than the UE experiencing some blocking without the network knowing about it The risk may also be greater.

[0282] In various embodiments, inactivity triggers the cell / BWP to switch to the off state. The duration is taken into account, e.g. the cell / BWP with the longest inactive time is the one that is inactive. A certain time lag (for example, , predefined or configured by RRC), C BFD Included in.

[0283] Cells with short inactive times are classified as C BFDThe motivation for including it is that it is inactive (for the UE). It may be more important to recover cells that are active more frequently than cells that are inactive. Because there is sex.

[0284] Selection based on cell frequency

[0285] In various embodiments, the UE may select C according to the frequency of the cell, e.g., the cell DL frequency. O N C as a subset of BFD The frequency of the cell is selected, for example, by the S Absolute frequency of the SB (e.g., FrequencyInfoDL IE in [38.331]) the absolute frequency of reference point A) Wavenumber (e.g., parameter of FrequencyInfoDL IE in [38.331]) absoluteFrequencyPointA), and / or initial D L Absolute frequency of the first PRB of the BWP (e.g., the frequency of the BWP IE in [38.331]) (given in part by the parameter locationAndBandwidth) For example, the highest and / or lowest frequency, C ON Inside Se For example, C max The cell is C BFD In various embodiments, the UE includes B FD based on cell frequency according to a function that maps cell frequencies to priorities for inclusion in Based on C BFD Select cells to include in the function, where functions can be predefined and / or complete May be fully or partially set.

[0286] Cells with high frequencies BFDThe motivation for including it is that beam obstructions are more likely to occur in the cells at lower frequencies. This is because there is a possibility that cells at higher frequencies may be more likely to occur than at lower frequencies.

[0287] Cell / BWP frequency band based selection

[0288] A frequency band is a contiguous or non-contiguous range of frequencies. The BWP and / or BWP are in a frequency range, which may include one or more cells. In various embodiments, the frequency bands are overlapping in frequency, which is the case for cells and This means that the BWP and / or BWP may be included in multiple frequency bands.

[0289] In various embodiments, a set of cells and / or BWPs C ON is B ON is expressed as Located in a set of frequency band(s), C ON Cells / BWP in B ON of may be located in a non-strict subset (a non-strict subset of a set S is equivalent to the set S) In various embodiments, the set of selected cells / BWPs C BFD is B BFD located in a set of frequency band(s) denoted as C BFD Cells in / BWP is B BFD The term "subset" as used herein may be used to refer to a non-strict subset of the Another use of "set" is to mean a non-strict subset, which means all the elements of a set. Note that the common usage of the term "subset" is to refer to something less than However, as used herein, a non-strict subset refers to less than all elements of a set. The set should be interpreted as containing either none or the same elements as the set.

[0290] In various embodiments, the UE may be configured to receive the frequency band(s) in which the cell / BWP is located. Based on C ON C as a subset of BFD Select .

[0291] B ON |≦C max In various embodiments, B BFD =B ON So that, C B FD The cell / BWP in ON At least one of each frequency band in One cell / BWP is B BFD The motivation for this selection method is that If a fault event occurs, e.g. due to blocking, across cells / BWPs in the same band, For example, if a beam failure occurs in one cell / BWP, In this case, there is a high risk that it is also occurring in other cells / BWPs in the same band.

[0292] In some embodiments, C located in the same frequency band ON Cells / BWP candidate cells There is a UE from C BFD One or more cells to include in / BWP(s) may be selected. In various embodiments, B BFD =B ON As long as C BFD Cell(s) / BWP(s) to include In various embodiments, the UE may select one or more Select which cells (or cells) from the candidate set using one or more selection criteria. (number) / BWP(s) to C BFDThis disclosure Various embodiments are described, including, for example, cell / BWP index, state time interval, inactive time, cell / BWP frequency, priority value, subcarried by the cell / BWP Based on service / service QoS, cell group configuration, etc.

[0293] For example, C ON one or more candidate sets of cells / BWPs in Here, cells / BWPs of the same candidate set are considered to be located in the same frequency band. B BFD =B ON To achieve this, C BFD Select at least one candidate from each candidate set for inclusion in The cell / BWP above should be selected. The UE first selects one or more selection criteria. Select the first cell / BWP from each candidate set according to the selection criteria, which is described in this disclosure. For example, cell / BWP index, state time, inactivity time, cell / BWP frequency, priority value, carried in cell / BWP Based on service / service QoS, cell group configuration, etc. C BFD To include in The first cell / BWP from each candidate set, i.e., |B ON |After selecting the cell / BWP In the past, the UE was already BFD =B ON Here, |B ON | <C max of In this case, the UE BFD To include it in another C max -|B ON |Select Cell / BWP This second selection may be according to the same criterion or criteria as the first selection. or according to other criteria / criteria, Alternatively, it may be left to the UE implementation.

[0294] In various embodiments, for example, |B ON |>C max In the case of C BFD Cells in / BW P is |B BFD In various embodiments, C BFD Within C so that each cell / BWP is located in a different frequency band. BFD Cells / BWPs in selected In various embodiments, for example, C BFD Cells / BWPs in multiple frequency bands If not located, |B BFD |=C max In various embodiments, for example, C BF D If cells / BWPs in are located in multiple frequency bands, |B BFD |>C max is In various embodiments, the UE may use one or more selection criteria to select B O N Which band(s) from B BFD Select whether to include it in the In this state, the band selection is based on the cell / BWP selection, e.g., the cell selected per band with additional constraints related to the number of cells / BWPs, e.g., at most a single cell / BWP per band. In some embodiments, the band selection is based on the band frequency (e.g., definition), band index, BFD, NBI and / or is based on predefined and / or configured band priorities for BFR.

[0295] In various embodiments, the Frequency Range (FR) in which the cell / BWP is located But C BFD The frequency range is used to select which frequencies are included in the Below 7.125 GHz or above 7.125 GHz (also referred to as FR1 and FR2) ) Below 3GHz, 3-24.25GHz, and above 24.25GHz

[0296] For example, if a cell / BWP is located in a particular frequency range(s), various Even if the cell / BWP is selected using different criteria / rules / procedures in the embodiment , and sometimes C BFD In some cases, another cell / BWP is included instead. In other cases, another cell / BWP is not selected instead. At least one cell / BWP from C BFD Various implementations to be included in In this case, a group is a set of nodes that are located in the same frequency band, belong to the same TAG, etc. The group may be a group / BWP, but all cells in the group must be in a specific frequency range (or ranges). ), the group is excluded from selection, i.e., the UE is not allowed to leave the group. At least one cell / BWP from C BFD If the above applies, the selection may be omitted. The particular frequency range(s) to be used are, in various embodiments, predefined in the specification. , and / or may be set by the network.

[0297] In some cases, the network may require a CORESET (or CORESETs) by the MAC CE. simultaneous activation of TCI state ID(s) for PDSCH For example, configure the UE with one or more cells and / or groups of BWPs. For example, the network configures a UE with two groups of cells, and the first group The cells are in one frequency band and the second group of cells are in a second frequency band. In some embodiments, the groups may correspond to frequency bands. The group includes cells of multiple frequency bands. The UE uses the CORESET of cells in the second group. Upon receiving a MAC CE that activates the TCI State ID for the ID, the second group Activate the TCI state ID of the CORESET with the same ID in all cells in the group. This functionality is useful, for example, when the same beam(s) are used by multiple cells. It can be useful if the network knows that CI State ID activation allows for signaling overlay instead of individual activation. In one example, the group is assigned by RRC to one of the cells. may be configured using the above list (e.g., simultaneousTCI- CellList1 is a sequence of ServCellIndex ((1,...,ma xNrofServingCells) size) and simultaneousT CI-CellList2 is a sequence of ServCellIndex ((1,... ,maxNrofServingCells) size), etc.). In one example, a list where each element contains a serving cell index and a group / list ID. may be configured by RRC using the simultaneousTC I-CellList is a sequence of X ((1,...,maxNrofServin gCells)), and X is the ServCellIndex and the simultaneous Contains both the taneousTCI-CellListId, where eousTCI-CellListId can be, for example, 0 or 1).

[0298] In various embodiments, a set of cells and / or BWPs C ON is B ON It was expressed as Located in a set of group(s), C ON Cells / BWP in B ON Non It may be located in a strict subset. ON All cells in and / or or BWP, for example through the list(s) mentioned above, to the established group ( It is not included in the set of (single or multiple). In some cases, it is set to a group. Unknown C ON In each cell in B ON Give it its own group (containing one cell) In some cases, the selection method may be a C ON For cells in C ON Second used for cells in In other cases, the selection method is used for C ON For cells in It is used first and is set to group C ON Second used for cells in In various embodiments, the set of selected cells / BWPs C BFD is B BFD and indicated Located in the set of group(s) to be BFD Cells / BWP in B BFDIn some cases, a cell may be located in at most one group. It may also be located in a loop.

[0299] In various embodiments, the UE may be configured to receive the group(s) in which the cell / BWP is located. Based on C ON C as a subset of BFD Select .

[0300] B ON |≦C max In various embodiments, B BFD =B ON So that, C B FD The cell / BWP in ON At least one of each group in Cell / BWP is B BFD The motivation for this selection method is to Harmful events may occur if, for example, the same set of beams is used for cells in a group. Therefore, they may be correlated across cells / BWPs within the same group.

[0301] In some embodiments, C located in the same group ON Candidate set of cells / BWPs in There is a UE from which C BFD One or more cells to include in / BWP(s) may be selected. In various embodiments, B BFD =B ON in As long as there is, C BFD Cell(s) / BWP(s) to include In various embodiments, the UE may select one or more Select which cell(s) from the candidate set using the selection criterion or criteria ) / BWP(s) to C BFD This is described in this disclosure. Various embodiments are described, including, for example, cell / BWP index, time in state, etc. , inactivity time, cell / BWP frequency, priority value, service carried by cell / BWP Based on service / service QoS, cell group configuration, etc.

[0302] For example, C ON one or more candidate sets of cells / BWPs in Here, we consider that cells / BWPs of the same candidate set are located in the same group. B FD =B ON To achieve this, C BFD from each candidate set (group) for inclusion in One or more cells / BWPs should be selected from the list. The UE first selects one or more selection criteria. selects the first cell / BWP from each candidate set (group) according to multiple selection criteria. , including according to various embodiments described in this disclosure, for example, group-in Index, Cell / BWP index, State time, Inactivity time, Cell / BWP period Frequency, priority value, service carried in cell / BWP / QoS of service, cell group Based on the group settings etc. BFD The first cell from each candidate set (group) for inclusion in / BWP, i.e., |B ON After selecting a cell / BWP, the UE is already BF D =B ON Here, |B ON | <C max In this case, the UE BFD to To include it, we need another C max -|B ONYou may select Cell / BWP. This second selection The selection may be according to the same criterion / criteria as the first selection, or It may be according to one or more other standards or be left to the UE implementation. This may also be done.

[0303] In various embodiments, for example, |B ON |>C max In the case of C BFD Cells in / BW P is |B BFD In various embodiments, C BFD Within C so that each cell / BWP is located in a different group. BFD Cells / BWP in selected In various embodiments, for example, C BFD Cells / BWPs in multiple groups If not, |B BFD |=C max (In some cases, the set group may be divided In various embodiments, for example, C BFD Cells / BWP in If it is located in a group of |B BFD |>C max In various embodiments, U E uses one or more selection criteria to select B ON From which group (singular (or multiple) to B BFD In some embodiments, the selection of groups The selection is based on the cell / BWP selection, e.g., the number of selected cells / BWPs per band. With associated additional constraints, e.g., at most one cell / BWP is selected per band In some embodiments, the selection of the group is based on a group index. C who is not in the RC setting group ON The cells in BON placed in its own group within In some embodiments, the UE first ON RRC configured group in C B FD Select the cell for.

[0304] Selection based on cell / BWP priority value

[0305] In various embodiments, the cells and / or BWPs may be BFD, NBI and / or B The FR has one or more priority value(s) associated with it. , C BFD As a criterion for selecting a cell / BWP to include in The priority value of the WP can be, for example, max S Use ru / BWP.

[0306] In various embodiments, the priority values ​​of the cells and / or BWPs are determined, for example, by the RRC configuration In some embodiments, the cell and / or the priority value for the BWP, the cell such as ServingCellConfig In some embodiments, the settings for the cell and / or BWP may be included. The priority value for radioLinkMonitoringConfig(DL BW P settings), or BeamFailureRecoveryConfig(UL BW P setting), etc., may be included within the DL BWP or UL BWP settings.

[0307] Selection based on the service / QoS associated with the cell / BWP

[0308] In various embodiments, the cell and / or BWP may be configured to support one or more service types, e.g. For example, it may be associated with eMBB and / or URLLC. A cell and / or BWP may be assigned one or more QoS classes (singular or plural), categories ( The number of nodes may be associated with a specific node or nodes, and / or a level or levels. In various embodiments, such associations are established by the network. In some embodiments, such an association is set up by default. In this embodiment, such an association is established implicitly.

[0309] In various embodiments, the UE may be configured to: C using the associated service type(s) BFD for inclusion in Cell(s) / BWP(s), e.g., reliability and / or delay C with the highest requirement(s) for extension max Select Cell / BWP.

[0310] In various embodiments, the UE may be configured to: C with the associated QoS(ies) BFD Cells to include (single (number or numbers) / BWP(s), e.g. highest requirement(s) C with max Cells / BWPs can be selected based on e.g. block error rate, delay, etc. do.

[0311] In various embodiments, a cell / BWP may include one or more flows and / or logical channels. In various embodiments, such flows and / or logical channels is associated with one or more service types and / or QoS In various embodiments, the UE BFD For the purpose of selecting cells / BWPs for inclusion in and a flow / logical channel representing a cell / BWP in terms of service type / QoS, e.g. For example, the flow(s) with the highest requirements for reliability and / or delay. Select the logical channel.

[0312] Selection based on cell tag

[0313] In various embodiments, a Time Advance Group (TAG) is , the cell(s) for which the UE applies the same transmission time advance for UL transmissions and / or a group of BWP(s). Cells / BWPs are often from the same transmission point or at least quasi-collocated. This means that they are sent from the sending point. Beam obstructions between the beams and beam-wave projector (BWP) can result in correlation.

[0314] In various embodiments, the cell(s) and / or BWP(s) )C ON Each or part of these belong to TAG. ON T to which the cell / BWP belongs A set of AG(s) is T ON In some embodiments, each cell In some embodiments, C ON Cells / BWP in It may belong to zero or one TAG. In various embodiments, the selected cell / BWP C BFD The set of T BFD belongs to a set of TAG(s) denoted as .

[0315] In various embodiments, the UE may at least assign a TAG(s) to which the cell / BWP belongs. Based at least in part on C ON C as a subset of BFD Select .

[0316] T ON |≦C max In various embodiments, T BFD =T ON So that, C B FD The cell / BWP in ON At least one of each TAG in Cell / BWP is B BFD The motivation for this selection method is to Harmful events are correlated across cells / BWPs in the same TAG, e.g., due to blocking. For example, if a beam failure occurs in one cell / BWP, If this occurs, there is a high risk that it may also occur in other cells / BWPs within the same TAG.

[0317] In some embodiments, C located in the same TAG ON Candidate set of cells / BWPs in There is a UE from C BFD One or more cells to include in / B WP(s). In various embodiments, B BFD =B ON Yes As long as C is selected from the candidate set, BFD Cell(s) / BWP(s) to include In various embodiments, the UE may select one or more Select which cell(s) from the candidate set using a selection criterion or multiple selection criteria / BWP(s) to C BFD This is described in this disclosure. Various embodiments include, for example, cell / BWP index, time in state, Inactivity time, cell / BWP frequency, priority value, cell / BWP service / QoS , based on cell group settings, etc.

[0318] For example, C ON one or more candidate sets of cells / BWPs in Here, we consider that cells / BWPs of the same candidate set are located in the same TAG. BF D =T ON To achieve this, C BFD At least one cell from each candidate set is selected for inclusion. The UE first selects one or more selection criteria. Select the first cell / BWP from each candidate set according to the criteria described in this disclosure. Various embodiments include, for example, cell / BWP index, time in state, Inactivity time, cell / BWP frequency, priority value, cell / BWP service / QoS , based on cell group settings, etc. C BFD The first cell from each candidate set to include in / BWP, i.e., |T ON After selecting a cell / BWP, the UE has already BFD =T ON where |T ON | <C max In this case, the UE BFD Included To do this, we use another Cmax -|T ON You may select Cell / BWP. This second selection The first selection may be according to the same criterion / criteria as the first selection, or may be according to other criteria / criteria. The standard / standards may be followed or may be left to the UE implementation. That's fine.

[0319] In various embodiments, for example, |T ON |>C max In the case of C BFD Cells in / BW P is |T BFD In various embodiments, C BFD Within C so that each cell / BWP is located in a different TAG. BFD Cells / BWPs in the In various embodiments, for example, C BFD If the cell / BWP in the If not, |T BFD |=C max In various embodiments, for example, C BFD Inside Se If a rule / BWP is located in multiple TAGs, BFD |>C max Various implementations In this embodiment, the UE selects T using one or more selection criteria. ON Karado T AG(singular or plural) to T BFD In some embodiments, T The selection of AG is based on the selection of cell / BWP, e.g., the cell / B selected per TAG. with additional constraints related to the number of WPs, e.g., at most a single cell / BWP per TAG In some embodiments, the selection of a TAG is determined by the time advance ( e.g., lowest or highest TA), TAG index, BFD, NBI and / or Based on predefined and / or configured TAG priorities for BFR.

[0320] Selection based on cell type

[0321] In various embodiments, the cells are differentiated into different types. Use the cell type to select the cell or cells for inclusion in the CBFD. Examples of different types of cells are as follows: PCell, PSCell, and SCell SpCell (including PCell and PSCell), and SCell PUCCH cell (e.g., SpCell(s), PUCCH SCell (single or multiple)), and non-PUCCH cell(s) For example, using cross-carrier scheduling with PDCCH to communicate with other cells (single or multiple cells) A cell configured to schedule one or more

[0322] In various embodiments, the UE first BFD Among the cells in SpCell(singular (or multiple) (PCell and PSCell, if defined). Then: C BFD is greater than the number of SpCell(s), the UE may Use of other standards / rules / procedures according to the embodiment(s) described in the disclosure Then, C BFD Select SCells to include in the

[0323] In various embodiments, the UE may BFD Among the cells in the CCH cell(s) (PCell and PSCell, if defined) For example, if the UE has one or more on-PUCCH SCells (single If the SCell has one or more SCells, they are sent to the C cell before other SCells. BFD First included in It can be rare.

[0324] In various embodiments, the UE is configured to self-schedule only. It is configured to schedule other cells rather than the cell C BFD In various embodiments, two types of precedence (cross-strip) are used. scheduling and self-scheduling) by other cell(s) It takes precedence over the cell(s) that are configured to be scheduled. do.

[0325] Selection based on explicitly and / or implicitly defined BFD-RS

[0326] In various embodiments, the UE is explicitly configured with BFD-RS, i.e., In RRC configurations such as adioLinkMonitoringConfig, It is clear that RS should be used for BFD in addition to other purposes such as beam management. In various embodiments, the UE may be configured with, for example, BFD-RS explicitly configured. If BFD-RS is not configured, it is implicitly configured. If so, the UE shall also use RSs defined / configured for other purposes for BFD. For example, the UE has a CORESET / search space to monitor, a QCL, e.g., empty In various embodiments, the RS is implicitly defined as It is BFD-RS.

[0327] Selection based on characteristics of BWP and BWP inactivity timer

[0328] In various embodiments, the UE may configure a BWP inactivity timer for a configured cell. In various embodiments, the UE may be explicitly configured with a default BWP. If there is no explicitly set default BWP, in some embodiments, the default The default DL / UL BWP is the initial DL / UL BWP.

[0329] In various embodiments, the UE may BFD BWP inactive set to include In various embodiments, the UE prioritizes cells with active DL BW timers. If P is the default DL BWP, then Cell / BWP takes precedence. , the UE waits for the BWP inactivity timer to be set and for an active DL BWP to be BFD Prefer the cell that is the default BWP for inclusion in the

[0330] The motivation for preferring the default DL BWP is that BWP inactivity due to beam obstruction Is it possible that the UE will not switch BWP after the inactivity timer expires? For other cells (not yet in default DL BWP), the UE Active DL BWP after deactivation due to beam obstruction at active DL BWP The default DL BWP can be switched to the configured and / or monitored BFD-RS Note that the set of may differ between BWPs.

[0331] Selection based on UE measurements

[0332] In various embodiments, the UE determines C based on the measurement results. BFD Select the cells / BWP to include In some embodiments, the UE selects ON First tie for cells / BWP in Measurements with lower complexity and / or power consumption than BFD measurements, e.g. An example of such a measurement is, for example, an RSR In case of a cell / BWP with multiple BFD-RS, the RSRP value is Obtained by averaging the RSRP measured across multiple BFD-RSs of a BWP It is possible.

[0333] In various embodiments, the UE may BFD To be included in the , the lowest measurement result, e.g. min(|C ON |,C max ) Select Cell / BWP. In various embodiments, the UE may BFD To be included in the The cell / BWP may be selected having less than 100 MHz, where the threshold may be predefined or Alternatively, it may be configured using RRC. If the selection is based on UE measurements, Note that the network may not be aware of the UE's selection.

[0334] Selection based on cell state

[0335] In various embodiments, the UE determines C based on cell conditions. BFD Select the cells / BWP to include In some embodiments, the UE selects BFD To include it in the resting cell state, In some embodiments, the UE prioritizes a cell in the activated cell state over a cell in the activated cell state. before the switch from the resting cell state to the activated cell state occurs, e.g. ,When SR is transmitted by another cell, e.g., SpCell,,C BFD Cell / BWP The UE shall ensure that the grants received in the cell that is to be switched from dormant to active are included and followed by grants received in the cell that is to be switched from dormant to active. This approach allows cells that are about to be activated to anticipate the If so, link recovery may be expedited.

[0336] Multiple selection criteria

[0337] In various embodiments, the UE may BFD Select cells and / or BWPs to include in To do this, multiple selection criteria are used; for example, primary and secondary criteria are defined. In this example, a primary criterion, a secondary criterion, and a tertiary criterion are defined.

[0338] In some embodiments, the UE BFD To include the cell / BWP in the first selection Use selection criteria. The first criterion is C BFD Did not fully select the cell / BWP for In this case, for example, the UE may decide to split the cells into two or more groups because the cells are equivalent according to the first criterion. Use a second criterion to select the cell / BWP as the working cell. In this situation, the second criterion resolves a choice that was not resolved by using the first criterion. In some embodiments, the second criterion is used to determine whether the first criterion is true or false. used for cell / BWP selection without taking into account the selection already achieved, e.g. partial selection If the second criterion is not sufficient, the third criterion may be used as well. This embodiment also includes further criteria beyond the third criterion.

[0339] For example, if priority value is used as the first criterion, the cells are sorted by priority value, e.g. , based on the highest and / or lowest values, first C BFD Included in the priority value ,When a selection between cells / BWPs with the same priority is required, a secondary ,criterion is used: For example, selecting between cells / BWPs based on their cell / BWP index.

[0340] In one embodiment, the set of bands is selected based on a first criterion, e.g., BBFD, e.g., The frequency bands of the BWP are selected according to various embodiments. If a / BWP exists, for example, in BBFD, between cells / BWPs located within the band The cell / BWP priority value is used as a secondary selection criterion. If there are multiple cells / BWPs in a band, for example, A third criterion may also be used.

[0341] Even if multiple selection criteria are defined, e.g., C BFD The first criterion for inclusion is If the selection of the BWP is sufficient, you should use them in most cases. Note that this may not be necessary.

[0342] In various embodiments having multiple selection criteria, the UE may select a first, second, third, etc. selection criteria. As a criterion, for example, as described as a variation of the cell / BWP selection rules / procedures, Use any combination of selection criteria / rules / procedures described in various embodiments of this disclosure. In various embodiments, the last criterion, e.g., the second or third criterion, is left to the UE implementation. For example, after selection by the first criterion, or by the first and second criteria, If more than one choice is required, it is up to the UE how to finalize the choice.

[0343] How to select a cell and / or BWP is at least partly left to the UE. In various embodiments, the network may be unaware of the selection made by the UE. In some embodiments, after cell and / or BWP selection, the UE determines which cell and / or BWP. In some cases, the cell, e.g. For example, a cell associated with a UCI and / or a P used to carry the UCI. BFD is running or not running on the cell associated with the UCCH resource Some indication, for example a one-bit indication, is included in the UCI. The UE's selected cell and / or BWP indication for D is sent from the UE to the network. Included in MAC CE.

[0344] BFD-RS Selection Rules / Procedures

[0345] In various embodiments, the UE may be configured to receive the UE signal from the on-cell and / or active BWP. In some cases, more BFD-RSs may be configured than the capacity of the first timer. Maximum number of simultaneously monitored BFD-RS of one type, and maximum number of simultaneously monitored BFD of the second type - Maximum number of RSs, the sum of simultaneously monitored BFD-RSs of the first and second types Maximum number, per frequency band, per frequency band combination, and / or per UE In various embodiments, the UE may use the available BFD UE capabilities to avoid exceeding the corresponding BFD UE capabilities. Support for BFD-RS and / or active BWP on-cell with enabled BFD A set of BFD-RS cells is selected.

[0346] In various embodiments, the size of the set of selected on-BFD-RS cells is determined by the corresponding Consistent with UE capabilities, e.g., not simply exceeding capabilities. The set of S is the on-cell with enabled BFD and / or activated The number of BFD-RS in the BWP, e.g., this set does not exceed the UE capabilities In various embodiments, the selection rule determines whether the rule / procedure is to be applied by the UE. Even if BFD-RS is selected, the set of selected BFD-RSs must be known to the network. Predefined.

[0347] In various embodiments, enabled BFD (e.g., via RRC configuration) and / or or activated BFD cells (e.g., by MAC CE and / or DCI) a set of cells with BFD-RS configured with an active BWP and / or is R ON In various embodiments, the set of on-BFD-RS for BFD is is R BFD In various embodiments, R BFD The maximum size of the UE capability is R max In various embodiments, |R ON |≦R max , i.e., exceeding UE capabilities If not, the UE BFD =R ON On the other hand, |R ON |>R m axIn this case, the UE may, for example, specify the BFD-RS index, the priority value, the QCL characteristics, and According to various embodiments of the multiple selection criteria, R ON R as a subset of BF D In various embodiments, |R BFD |=R max , or |R BFD | <R max , or |R BFD |≦R max is selected so that

[0348] In various embodiments, different types of BFD-RS and / or different frequency bands may be used. There are multiple distinct UE capabilities related to BFD-RS, such as: Selection rules / procedures may be applied so as not to exceed each individual UE's capabilities.

[0349] In various embodiments, enabled BFD (e.g., via RRC configuration) and / or or activated BFD cells (e.g., by MAC CE and / or DCI) a cell with a BFD of the first type configured with an active BWP and / or -RS set is R ON,1 Similarly, the second type of BFD-RS session is To is R ON,2 In various embodiments, the first type of object for BFD is The BFD-RS set is BFD,1 The second type of on-demand for BFD is denoted as The BFD-RS set is BFD,2 In various embodiments, R BFD,1 The maximum size of the UE capability is R max,1 and R BFD,2 Maximum size of UE The force is R max,2In various embodiments, |R ON,i |≦R max,i of If, i.e., the UE capability for the i-th type of BFD-RS is not exceeded, The UE is RBFD,i=R ON,i On the other hand, |R ON,i |>R max ,i In this case, the UE may, for example, perform R ON,i Subset of R as BFD,i In various embodiments, |R BFD,i |=R max, i , or |R BFD,i | <R max,i , or |R BFD,i |≦R max,i and is selected to be.

[0350] In various embodiments, the set R ON Some of the RSs in, for example, BFD-enabled cells / B If a WP is not explicitly configured with BFD-RS, it is implicitly configured with BFD-RS. do.

[0351] In various embodiments, a combination of BFD-RS selection and cell / BWP selection is used. .

[0352] In various embodiments, a combination of different types of UE capabilities may be applied, for example: The maximum number of BFD-RS of different types per frequency band and the maximum number of BFD-RS of different types per frequency band In such an embodiment, each UE BFD-RS of different types and frequency bands can be used together to avoid exceeding the capacity. You may choose.

[0353] In the following description of the embodiments, various examples of selection rules / procedures / criteria are described. The maximum number of BFD-RS, e.g., R max This is an example of a UE capable in the form of For clarity, other forms of BFD-RS related UE capabilities, i.e. R in the above example, are also considered. max ,i Other examples with the same are not shown. However, the selection rules / procedures / criteria of BFD-RS The standard is, for example, R max R max,i Replace it with and applies equally to scenarios with other forms of BFD-related UE capabilities. It is possible.

[0354] Selection based on BFD-RS index

[0355] In various embodiments, R ON The index of the RS in, e.g., RadioLinkM monitoring RS-Id, SSB-Index, and / or NZP-CSI- According to the RS-ResourceId, the UE ON R as a subset of BFD Select In various embodiments, such an RS index is often determined by the cell and and / or BWP, this means that the same set of possible indexes is assigned to each cell and Note that this means that the IFRS 10.10 standard may be used in conjunction with the BWP and / or the BWP. For example, An explicitly defined BFD-RS is provided for each DL BWP, e.g., RadioLink May be defined in MonitoringConfig, 0 to maxNrofF AlertDetectionResources - Index up to 1 (e.g., 9) A suffix may be added.

[0356] In various embodiments, R ON BFD-RS in, e.g., the lowest and / or highest R, with index(es) max BFD-RS is R BFD Included in do.

[0357] In some embodiments, across all on-cells and / or active BWPs , the RS with the lowest and / or highest index. For example, If there is any RS with index 0 in the cell and / or active BWP, If so, it / they are first R BFD Then, any on-cell and / or If there is an RS with index 1 in the active BWP, it / they Ba, R max until R is achieved. BFD Various such embodiments include: R of BFD-RS from different on-cells and / or active BWPs BFD to This can result in uneven inclusion, e.g., all BFD-RS from some cells. may be included if it is set at a lower index, whereas If the BFD-RS from another cell was configured with a higher index, e.g. It may not be included.

[0358] In some embodiments, in all on-cell and / or active BWPs: The RS with the lowest and / or highest index is included. For example, and / or BWP, provided that they do not exceed the RBFD, The RS with the highest index is included in the RBFD first. Unless the RS with the second lowest and / or second highest index is Various such approaches include on-cell and / or active This resulted in a more even inclusion of BFD-RS in the RBFD across the BWP. In one embodiment, the BFD-RS of different on-cells and / or active BWPs are , even if set at very different indexes, on-sell and / or act One BFD-RS is included in the RBFD for each active BWP.

[0359] The motivation for using such a selection method is simplicity and the fact that the network The configured association between S and RS index allows the UE to assign BFDRS to RBFD. This is because you may be able to control the order / priority of inclusion. If the UE includes the BFD-RS with the cell index in the RBFD, the network The network prefers the UE to run BFD on BFD-RS with the lowest RS instance. You can assign a dex.

[0360] Selection based on BFD-RS priority value

[0361] In various embodiments, the BFD-RS is a BFD-, NBI-, and / or BFR-related In various embodiments, the UE has one or more priority value(s) associated with it. Criteria for selecting BFD-RS for inclusion in BFD include, for example, the highest and / or or the priority order of the BFD-RS, such as the Rmax BFD-RS with the lowest priority value. Use place value.

[0362] In various embodiments, the priority value of the BFD-RS may be, for example, In the receiving RS, for example, by the network as part of the RRC configuration In some embodiments, the priority value of the BFD-RS, e.g., The priority value associated with a BFD-RS and the BFD-RS that is the CSI-RS Another priority value associated with may be predefined.

[0363] Selection based on QCL properties

[0364] In various embodiments, the UE may use a configured set of QCL relationships (e.g., R via RC configured TCI state and / or MAC CE and / or DCI through the indicated TCI state), determine the BFD-RS to include in the RBFD. In an embodiment, the UE is a QCL with a monitored CORESET / search space. In some embodiments, the UE prioritizes the RS that has a particular index, e.g., C RS is the QCL in the monitored CORESET with CORESET index 0, Prioritize for inclusion in RBFD.

[0365] In various embodiments, the plurality of RSs are QCLs with monitored CORESETs. In some such embodiments, QCL-Type D (see [38.214]) In some such embodiments, only RSs having is included in RON, but RS with QCL-TypeD (see [38.214]) , are prioritized for inclusion in the RBFD.

[0366] Multiple selection criteria

[0367] In various embodiments, the UE may select a BFD-RS to include in the RBFD by using multiple For example, primary and secondary criteria are defined. Primary, secondary, and tertiary criteria are defined.

[0368] In some embodiments, the UE selects a first selection for including the BFD-RS in the RBFD. The first criterion did not completely select BFD-RS for RBFD. In this case, for example, since multiple BFD-RSs are equivalent according to the first criterion, the UE A second criterion is used to select the FD-RS. In some embodiments, the second criterion The criteria are used to resolve choices that were not resolved by using the first criterion. In some embodiments, the second criterion is used as a braking force. Therefore, the BFD-RS selection is not taken into account for the selections already made, e.g., partial selections. If the second criterion is not sufficient, the third criterion may be used as well. Some embodiments also include additional criteria beyond the third criterion. For example, If priority values ​​are used, BFD-RS will use the priority values, e.g., highest and / or lowest. or based on the lowest value, will be included in the RBFD first. If a choice is required between BFD-RSs with Select between those BFD-RS based on the index.

[0369] In one embodiment, the first criterion relates to selection based on, for example, a BFD-RS index. According to various embodiments, the RS index is used to include the BFD-RS in the RBFD. If further selection between BFD-RS with the same / equivalent index is required, In this case, a second criterion based on the cell and / or BWP is used, e.g., cell index. can be.

[0370] Even if multiple selection criteria are defined, e.g., R BFD The first criterion for inclusion is B In many cases, it is necessary to use them if they are sufficient to completely select the FD-RS. Note that this may not be necessary.

[0371] In various embodiments having multiple selection criteria, the UE may select a first, second, third, etc. selection criteria. As a guideline, for example, as described for the BFD-RS selection rules / procedures, Use any combination of the selection criteria / rules / procedures described in the various embodiments shown. In some embodiments, the last criterion, e.g., the second or third criterion, is left to the UE implementation. For example, further selection after the first criterion or after the first and second criteria If a choice is required, it is up to the UE how to finalize the choice.

[0372] Exemplary UE Procedures

[0373] A set of BFD cells, BFD BWPs and / or BFD-RSs that does not exceed the UE's capabilities Various embodiments of the UE procedure for maintaining the The numbered steps are described below. Various embodiments may include some of the steps. and / or in a different order. Step S1001. For the description of FIG. 4 and / or FIG. 5, please refer to various embodiments. I want to be illuminated. Step S1002. The UE checks various configurations related to BFD, such as RRC configuration, Receive MAC CE configuration or DCI configuration from the network. For example, Figure 4 ,As shown in Figures 5, 7, and 8, the network instructions described,1 One or more settings are received. Step S1003. The UE, for example, performs the following steps according to the various settings received in step S1002: to determine a first set of BFD cells, BFD BWPs and / or BFD-RSs. do. In various embodiments where multiple different forms of UE capabilities are applicable, BFD-RS A plurality of first sets may be determined, for example, a maximum number of first type on BFD-R Not only the S capability, but also the second type of maximum number of on-BFD-RS capabilities are applicable. In this case, the UE will acquire a first set of BFD-RSs of the first type and A first set of BFD-RSs of a second type may be determined. Step S1004. The UE determines whether the first set exceeds one or more BFD-related UE capabilities. Evaluate whether In this step, a first set of BFD-RS of the first type and a second set of BFD-RS of the second type are In various embodiments, the UE may have a first set of BFD-RSs of the same type, and the set may be configured to correspond to the first set of BFD-RSs. exceeds the UE's capability to perform the BFD-RS, i.e., the first set of BFD-RS of the first type is Evaluate whether the UE's capabilities for Type 1 on BFD-RS are exceeded. Step S1005: If not, the UE uses the first set for BFD. In this step, a first set of BFD-RS of the first type and a second set of BFD-RS of the second type are In various embodiments, the UE may have a first set of BFD-RSs of these BFs. The first set of D-RSs is used as the on-BFD-RSs. Step S1006. If the first set exceeds the UE capability(s), the UE For example, the cell / BWP selection rules / procedures and the BFD-RS selection rules / procedures As described in the embodiments, one or more selection rule(s) / procedures Based on the order(s), BFD Cell, BFD BWP and / or BFD- A second set of RS is determined. Capabilities for the first type of BFD-RS and the second type of BFD-RS In various embodiments having capabilities, the UE may be configured to not exceed each of the corresponding UE capabilities. In this step, the second set of BFD-RSs of the first type and A second set of BFD-RSs of a second type is determined, eg, jointly. Step S1007: The UE uses the second set for BFD. In this step, a second set of BFD-RS of the first type and a second type In various embodiments having a second set of BFD-RSs of these BFs, the UE The second set of D-RSs is used as the on-BFD-RSs.

[0374] An exemplary embodiment of the present disclosure includes a processor (e.g., processor 118), a memory (e.g., For example, memory 130, memory 132, etc.), and communication circuitry (e.g., transceivers a first device (e.g., 102) including a first electrode (e.g., 120) The first device is connected to a communication network via the communication circuit. The first device further includes computer-executable instructions stored in a memory of the first device, the instructions When executed by a processor of the device, the first device performs beam fault detection for the plurality of cells. device capabilities (e.g., UE capabilities) that are an indication of the ability of the first device to perform BFD. and transmitting device capabilities to a second device (e.g., gNode B), and receiving from the second device: Information about changes in network configuration (e.g., a different cell assigned to the UE, or different BWPs assigned to the UE, or different BFD-RSs assigned to the UE, receives at least one message containing a change in the on / off state of a cell, Based on the information of the network setting changes, the network settings are configured to prevent exceeding the device capacity. Then, the first device replaces the first set of cells with the second set of cells, which performs BFD. Let them eat.

[0375] The embodiment described in the paragraph above is based on the network configuration (e.g., The UE's capabilities are determined by the cell assigned to it (either BWP or BFD-RS). This is one of several ways to address the problem of over-reachability, where the UE can Device Capability (UE Capability) is an indication of the first device's ability to perform Beam Fault Detection (BFD). ) and transmits it to a second device (e.g., gNode B). The U by the cells assigned to it for BFD, BWP, and BFD-RS The network configuration is changed so as not to exceed the capacity of E. and receiving at least one message from the second device containing information about the change in Based on the information of the network setting change, the network setting may exceed the device's capabilities. The first device runs BFD on the second set of cells so that the first set of cells The second set of cells (and / or BWP, and BFD-RS) replaces It may be provided to the UE by a second device.

[0376] As previously mentioned, according to the present disclosure, the requirement for a UE to perform BFD is The UE may be configured with three or more , for example, 5, 10, 15, 20, 25, 30, or 36 different cells. As recognized by the inventors, it is necessary to proactively monitor the load / demand of the UE. Without a way to manage this, the UE may not provide BFD in cells that are expected to provide BFD. This disclosure provides a number of ways to address this potential problem. to provide.

[0377] In the second method, the UE determines for itself that its capabilities have been exceeded and, in turn, follows the rules or or a set of processes to identify networks within the capabilities of the UE in a first set of cells. Replaces the second set of cells in the network configuration.

[0378] Similarly, many of the exemplary embodiments provided herein may be implemented using, for example, several cells, Requests in terms of several reference signals and / or discrete numbers or quantities of BWP Although described with respect to power levels at a UE or other cells, the inventors believe that the teachings of this disclosure may also be used to It is recognized that this disclosure also covers dynamic control, such as adapting to changes in the signal level. The teachings of [the present application] relate to various parameters (e.g., UE capabilities) in terms of integers (e.g., number of cells). However, the UE capability parameters and the BFD functionality are The demands made by the UE do not have to be an integer (i.e., all cells make equal demands on the UE). For example, perhaps (1) the number of BFD-RSs used is different from other cells, (2) S NR or (Signal to Interference Plus Noise) ratio imposes a greater BFD burden on the UE than other cells or (3) the power level at the cell may be below a threshold, which This allows for other BFD-RS characteristics such as beam fading, null shifting, and transmission periodicity. Some interference occurs due to signal quality and other aspects such as bandwidth and frequency density. It is recognized that some cells may require more BFD processing power than others. Therefore, these factors are used to determine the quantization level of the network configuration, which is expressed as an integer number of cells. Furthermore, these real numbers do not necessarily result in a single value, but can be real numbers. As a non-limiting example, if the UE It may be assigned two cells, the first of which, at time T1, is The first cell generates a request that is 90% of the standard cell request, and the second cell generates a request that is 110% of the standard cell request. However, at time T2, the associated demands are 110% and 12% respectively. 0%, which allows either the network or the UE to determine whether the request is for BFD. This triggers the network to determine that the UE's capabilities are being exceeded. The UE adapts its cell configuration or applies a set of rules to the A second cell where E is the set of cells running BFD and the request is within the UE's BFD capabilities. The UE may decide to replace the set of may not be static and therefore any perceived changes in UE capabilities may affect the UE and / or or implemented by the network, where a second set of cells replaces the first set of cells. This acts as a trigger event similar to that described above to

[0379] In an exemplary embodiment, the first device receives information about changes to network settings from the second device. receiving at least one message including information, the at least one message including: It may take several forms, for example a Radio Resource Control (RRC) signal. where RRC signaling indicates that BFD is enabled in the Bandwidth Part (BWP) for the candidate cell. whether BFD is enabled in the candidate cell and whether BFD reference signaling (BFD- whether the RS) is set in the candidate cell or not. It contains cell configuration indications for candidate cells in the set of rules, or for BFD, BWP, and / or MAC-CE signaling regarding activating BFD-RS This may be generated by L1 signaling, or by L1 signaling. The number or numbers may include a cell state index indicating the state of the candidate cell.

[0380] In an exemplary embodiment, as described above with respect to the "second method," the first device An indication of the capability of the first device to perform beam fault detection (BFD) for the cell of the device The network configuration of the first set of cells is determined based on the first set of cells. Determine whether the set of rules exceeds the device's capability to execute BFD, and In response to determining that the first device performs BFD, in the second set of cells, Replace the set of

[0381] In an exemplary embodiment, the first device communicates device capabilities to a network of a first set of cells. Compared to the setting, the second set of cells is used to measure the number of cells per second so that the device capacity is no longer exceeded. The number of cells in the set of cells is reduced.

[0382] In an exemplary embodiment, the first device receives a cell index, a BWP index, a cell Time in state, time in BWP state, time in cell state inactivity, time in BWP state inactivity BW time, cell frequency, cell frequency band, BWP frequency band, cell priority value, BW P priority value, cell service or quality of service, service or quality of service or The BWP, cell time precedence group, cell type, and cell configuration are BFD reference signal (BFD -RS), some of the characteristics of the BWP and the BWP inactivity timer At least one of the following: a measurement of the first device; and a state of the cell. The method selects candidate cells for inclusion in the second set of cells based on a selection criterion including:

[0383] Similarly, in an exemplary embodiment, the first device may receive a BFD reference signal (BFD-RS) RFC 2488 Routing Information Processing Standards Track [Page 10] The candidate cells may be selected for inclusion in the second set of cells based on selection criteria including:

[0384] In an exemplary embodiment, the first device includes a processor, a memory, and a communication circuit; The first device is connected to a communication network via a communication circuit, and the first device and further comprising computer executable instructions stored in memory, the computer executable instructions being When executed by a processor, the first device receives a plurality of BFD reference signals. The capability of the first device to perform beam fault detection (BFD) operations on the RS identifying device capabilities that are instructions; transmitting the device capabilities to a second device; and receiving from the second device receive at least one message containing information about a change in network configuration, Based on the information of the network setting changes, the network settings are configured to not exceed the device capacity. For example, the first device performs BFD operations on the second set of cells. Replace the set.

[0385] In an exemplary embodiment, the first device includes a processor, a memory, and a communication circuit; The first device is connected to a communication network via a communication circuit, and the first device and further comprising computer executable instructions stored in memory, the computer executable instructions being When executed by a processor, the method includes: a device capability that is an indication of the first device's ability to perform beam fault detection (BFD) operations using Identify the network configuration in the first set of cells and assign it to the first set of BFD-RS. Determine whether the device's capabilities to perform BFD operations are exceeded, and if so, In response to the determination, the network settings are adjusted to prevent the device capacity from being exceeded. The first device replaces the first BFD-RS set that performs BFD operations with the first BFD-RS set. Can.

[0386] In an exemplary embodiment, a processor, a memory, and a communication circuit are included, and and a first device connected to a communication network by means of a beam fault detection (BFD). A method for managing beam failure detection (BFD) for multiple cells is described. identifying a device capability that is an indication of an ability of a first device to perform the and transmitting from the second device at least one command including a change in network settings. and update the network settings based on the changes in the network settings. The first device performs BFD on the second set of cells so as not to exceed the device's capabilities. and replacing the first set of cells.

[0387] In an exemplary embodiment, a non-uniform memory device tangibly having computer-readable instructions stored thereon is provided. A temporary computer-readable storage medium is described, the computer-readable instructions comprising: When executed by the processing circuit, the processing circuit is D) managing a first beam fault detection (BFD) for a plurality of cells; identifying device capabilities that are an indication of the capabilities of the device; and transmitting the device capabilities to the second device. and receiving at least one message from the second device that includes a change in network settings. The network settings allow the device to function as it receives and change the network settings. The first cell on which the first device runs BFD is the second set of cells, so as not to exceed the power and replacing the set of

[0388] In an exemplary embodiment, the second device includes a processor, a memory, and a communication circuit; The second device is connected to the communication network via the communication circuit, and the second device further comprising computer-executable instructions stored in the memory, The instructions, when executed by the processor, cause the second device to transmit a signal to a cell in the communication network. device capabilities, including an indication of the device capabilities of the first device to perform beam fault detection (BFD), receiving in at least one message from the device, a cell configuration for the first set of cells; The cell configuration information is transmitted to the first device by RRC signaling. via at least one of the following: MAC CE signaling, and L1 signaling The RFC 2444 protocol includes information indicating whether the RFC 2444 protocol is configured to have BFD enabled.

[0389] In an exemplary embodiment, the second device sends cell configuration information via RRC signaling. RRC signaling is performed by BFD to determine the bandwidth portion (BW portion) of the candidate cell. t:BWP), whether BFD is enabled in the candidate cell, and B whether FD-RS is on for the candidate cell; The device of one includes an instruction for cell configuration of a candidate cell of a second set of cells on which BFD is performed.

[0390] In an exemplary embodiment, the second device determines whether a candidate cell in the second set of cells has a MAC C Cell configuration with an indication of whether it has BFD and BWP activated by E Sends specific information.

[0391] In an exemplary embodiment, the second device determines whether a candidate cell in the second set of cells has a MAC C Cell configuration information with an indication of whether it has BFD-RS activated by E Send.

[0392] In an exemplary embodiment, the second device determines whether a candidate cell in the second set of cells is a candidate cell in the L1 signaling A cell with an indication of whether it has BFD and BWP activated by the ring Sends the router configuration information.

[0393] In an exemplary embodiment, the first device receives the configuration information from the second device. A method for managing beam fault detection (BFD) in a processor is described, wherein a second device a processor, a memory, and a communication circuit, and is connected to a communication network via the communication circuit. The method includes a first step of performing beam fault detection (BFD) in a cell in the communication network. receiving an indication of device capabilities of the device in at least one message from the first device; transmitting cell configuration information regarding a first set of cells to the first device, The configuration information is transmitted by each cell through RRC signaling, MAC CE signaling, and and L1 signaling. and including information indicating whether the setting is set or not.

[0394] Therefore, the disclosed system and method may not deviate from its spirit or essential characteristics. Those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit and scope of the present invention. The presently disclosed embodiments are therefore considered in all respects to be illustrative. It is not intended to be exhaustive or to be limiting as disclosed. Nor is it intended to limit the disclosure to the precise form, and modifications and variations are possible in light of the above teachings. or which may be acquired from practice of the present disclosure without departing from the breadth or scope thereof. Therefore, although particular configurations have been described herein, other configurations may also be employed. Numerous modifications and other embodiments (e.g., combinations, rearrangements, etc.) are possible in accordance with the present disclosure. and within the skill of the art in the art, and are within the scope of the disclosed subject matter and any The scope of equivalents is intended to be encompassed by the appended claims. These elements may be combined, rearranged, omitted, or omitted within the scope of the present invention to create embodiments. Furthermore, certain features can sometimes be used without the corresponding use of other features. Therefore, the applicant(s) are not liable to any party for any direct, indirect, incidental, consequential, special ... and includes all such alternatives, modifications, equivalents, and variations that fall within the scope thereof. This is the intention.

[0395] References to singular elements are to "one and only one" unless expressly stated as such. "A, B, or When a phrase similar to "at least one of" is used in a claim, that phrase The phrase "A" may be present in the embodiment only, and "B" may be present in the embodiment only. , C may be present in an embodiment, or any combination of elements A, B and C. It should be noted that combinations of A and B, A and C, B and and C, or A and B and C.

[0396] Unless an element is expressly recited herein using the phrase "means for," Unless otherwise specified, no claim element shall be construed under the provisions of 35 U.S.C. § 112(f). As used herein, the terms "comprise," "include," or other similar terms are not intended to be limiting. The term "variant" is intended to cover a non-exclusive inclusion and does not include any element consisting of a list of elements. A process, method, article, or apparatus includes, but is not limited to, those elements. Any process, method, article, or apparatus not expressly listed or inherent in such The scope of the invention is defined by the appended claims, rather than the foregoing description. All variations that fall within the meaning and scope and equivalence of the scope are indicated by the term "range." Further, the following are intended to be encompassed therein.

Claims

1. a processor; Memory and A communication circuit; an apparatus including: a communication circuit connected to a communication network; the apparatus further comprising computer-executable instructions stored in the memory; The computer-executable instructions, when executed by the processor, cause the device to: Perform Beam Failure Detection (BFD) for multiple cells identifying device capabilities that are indicative of the capabilities of said device; causing said device capabilities to be transmitted to other devices; receiving at least one message from said other device containing information regarding a change in network settings; Receive the message, Based on the information of the change in network settings, The second set of cells replaces the first set of cells so as not to exceed the device capacity. Let Device.

2. The at least one message is a Radio Resource Control (RFC) message. RRC) signaling, 10. The apparatus of claim 1.

3. The RRC signal Whether BFD is enabled in BandWidth (BWP) for the candidate cell; whether BFD is enabled in the candidate cell; and BFD-Reference Signal (BFD-RS) configuration for the candidate cell 、 a cell configuration of the candidate cell of the second set of cells with respect to at least one of Including instructions for 3. The apparatus of claim 2.

4. The computer-executable instructions may further cause the device to: From the at least one message, BFD, BFR-RS, and B At least one of the WPs is activated by MAC CE signaling. receive an indication as to whether or not 10. The apparatus of claim 1.

5. The computer-executable instructions may further cause the device to: The other device transmits at least one of BFD and BWP in the candidate cell via L1 signaling. At least one L1 message indicating whether the and receiving the at least one message.

10. The apparatus of claim 1.

6. The L1 signaling includes a cell state index indicating a state of the candidate cell.

6. The apparatus of claim 5.

7. The BFD operation is performed based on a plurality of BFD reference signals (BFD-RSs); 10. The apparatus of claim 1.

8. the second set of cells comprises a first group of cells operating in a first frequency band; and a second group of cells operating in a second frequency band, one or more TCI status IDs of each cell of the first frequency band for a UE (t) an activation of said first frequency band is transmitted to said UE identifying one of said cells of said first frequency band; triggered by a message 10. The apparatus of claim 1.

9. a processor; Memory and A communication circuit; an apparatus including: a communication circuit connected to a communication network; the apparatus further comprising computer-executable instructions stored in the memory; The computer-executable instructions, when executed by the processor, cause the device to: Perform Beam Failure Detection (BFD) for multiple cells identifying device capabilities that are indicative of the capabilities of said device; a network configuration of a first set of cells is a first set of cells of the plurality of cells; determining whether the device's ability to execute BFD is exceeded; In response to determining that the device capability has been exceeded, a second set of cells are configured to replacing the first set of cells that execute D; Device.

10. The computer-executable instructions may further cause the device to: comparing the device capabilities with the network configuration of the first set of cells; of the second set of cells relative to the first set of cells so that the force is no longer exceeded. Reducing the number of cells, 10. The apparatus of claim 9.

11. The computer-executable instructions may further cause the device to: Cell index, BWP index, Time in cell state, time in BWP state, Inactive time of cell state, inactive time of BWP state, Cell frequency, Cell frequency band, BWP frequency band, Cell priority value, BWP priority value, Cell service or quality of service, service or quality of service or BWP; the time leading group of cells, Cell type, The cell configuration is made by BFD-Reference Signal (BFD-RS). Whether or not At least one of the characteristics of the BWP and the BWP inactivity timer; Instrument measurements, and The state of the cell, and selecting the second set of cells based on a selection criterion including at least one of: select a candidate cell, 11. The apparatus of claim 10.

12. The computer-executable instructions may further cause the device to: BFD Reference Signal (BFD-RS) index, BFD-RS priority value, and quasi-collocational properties, and selecting candidates to be included in the second set of cells based on a selection criterion including at least one of: Select the cell, 11. The apparatus of claim 10.

13. the second set of cells comprises a first group of cells operating in a first frequency band; and a second group of cells operating in a second frequency band, one or more TCI status IDs of each cell of the first frequency band for a UE (t) an activation of said first frequency band is transmitted to said UE identifying one of said cells of said first frequency band; triggered by a message 10. The apparatus of claim 9.

14. a processor; Memory and A communication circuit; an apparatus including: a communication circuit connected to a communication network via said communication circuit; the apparatus further comprising computer-executable instructions stored in the memory; The computer-executable instructions, when executed by the processor, cause the device to: Beam Failure Detection (BFD) in cells within a communication network receiving from at least one other device a device capability including an indication of the device capability of the other device to execute; Receive it with the message, causing the other device to transmit cell configuration information regarding a first set of cells; The information is transmitted by each cell through RRC signaling, MAC CE signaling, and L1 and configured to have BDF enabled via at least one of the signaling. including information indicating whether Device.

15. The computer-executable instructions may further cause the device to: The cell configuration information is transmitted via RRC signaling, and the RRC signaling 、 Whether BFD is enabled in the BandWidth (BWP) for the candidate cell mosquito, whether BFD is enabled in the candidate cell; and Whether BFD-RS is on for the candidate cell; a second set of cells in which the other device performs BFD, for at least one of the including cell configuration instructions for the target candidate cells, 15. The apparatus of claim 14.

16. The computer-executable instructions may further cause the device to: The candidate cells of the second set of cells are BFD and and transmitting the cell configuration information having an indication of whether the cell has a BWP.

15. The apparatus of claim 14.

17. The computer-executable instructions may further cause the device to: If the candidate cell in the second set of cells is a BFD- transmitting the cell configuration information including an indication of whether or not the cell has an RS; 15. The apparatus of claim 14.

18. The computer-executable instructions may further cause the device to: The candidate cells of the second set of cells are BFDs activated by L1 signaling. and transmitting the cell configuration information having an indication of whether or not the cell has a BWP.

15. The apparatus of claim 14.

19. the second set of cells comprises a first group of cells operating in a first frequency band; and a second group of cells operating in a second frequency band, one or more TCI status IDs of each cell of the first frequency band for a UE (t) an activation of said first frequency band is transmitted to said UE identifying one of said cells of said first frequency band; triggered by a message 15. The apparatus of claim 14.

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