Method for beam failure recovery based on unified TCI framework

Abstract

The present invention relates to an apparatus, system, and method for beam failure recovery based on a unified TCI framework. A UE may receive a configuration of a BFR process for a CCG from a base station. The CCG may include at least two CCs, and the UE may periodically receive from the base station at least a first BFD RS and a first CBD RS in a first CC included in the CCG. The UE may detect a beam failure in at least the first CC based on the first BFD RS and send a BFRQ to the base station. The BFRQ may include a candidate beam selected based on at least the first CBD RS and may be sent via a PRACH or MAC CE. The UE may receive a BFR response from the base station and apply the candidate beam to the first CC and at least one additional CC in the CCG.

Description

Technical Field

[0001] The present invention relates to wireless communications, and more particularly to an apparatus, system, and method for beam failure recovery based on a unified transmission configuration indicator (TCI) framework, for example in 5G NR systems and above.

[0002] Related technical description

[0003] The use of wireless communication systems is growing rapidly. In recent years, wireless devices such as smartphones and tablets have become increasingly sophisticated. In addition to supporting phone calls, many mobile devices now also provide access to the Internet, email, text messaging, and navigation using the Global Positioning System (GPS), and are capable of operating sophisticated applications that utilize these capabilities.

[0004] Long Term Evolution (LTE) is currently the technology of choice for most wireless network operators worldwide, enabling them to provide mobile broadband data and high-speed internet access to their subscriber base. LTE was first proposed in 2004 and standardized in 2008. Since then, as the use of wireless communication systems has grown exponentially, the demand on wireless network operators has risen to support higher capacity for a higher density of mobile broadband users. Consequently, research on new radio access technologies began in 2015, and the first version of Fifth Generation New Radio (5G NR) was standardized in 2017.

[0005] Compared to LTE, 5G-NR (also referred to as NR) offers higher capacity for a higher density of mobile broadband users, while also supporting ultra-reliable and massive machine-type device-to-device communications, lower latency, and / or lower battery consumption. Furthermore, NR allows for more flexible UE scheduling than current LTE. Consequently, efforts are underway to leverage the higher throughput possible at higher frequencies in the ongoing development of 5G-NR. Summary of the Invention

[0006] The embodiments relate to wireless communications, and more particularly to apparatus, systems, and methods for beam failure recovery based on a unified transmission configuration indicator (TCI) framework, for example in 5G NR systems and beyond.

[0007] For example, in some embodiments, a user equipment device (UE), such as UE 106, may be configured to receive a configuration of a beam failure recovery (BFR) procedure for a component carrier (CC) group (CCG) from a base station. The CCG may include at least two CCs. Furthermore, the UE may be configured to periodically receive at least a first beam failure detection (BFD) reference signal (RS) and a first candidate beam detection (CBD) RS from a first CC of at least two CCs included in the CCG from the base station, and detect a beam failure in at least the first CC based on the first BFD RS. The UE may be configured to send a beam failure recovery (BFR) request (BFRQ) to the base station. The BFRQ may include candidate beams selected based on at least the first CBD RS. The BFRQ may be sent via a physical random access channel (PRACH) or a medium access control (MAC) control element (CE). Furthermore, the UE may be configured to receive a BFR response from the base station and apply the candidate beams to the first CC and at least one additional CC in the CCG. In some cases, the UE may wait a configured number of symbols after receiving the BFR response before applying the candidate beams. The configured number of symbols may include an offset. The offset may indicate cross-CC beam indication. In some cases, the UE may report the offset via UE capabilities. In some cases, the UE may receive a configuration message from the base station that may indicate the offset. Additionally, the offset may be predefined, for example, by standards and / or network / UE preferences.

[0008] The techniques described herein may be implemented in and / or used with a number of different types of devices, including, but not limited to, any of unmanned aerial vehicles (UAVs), unmanned aerial controllers (UACs), UTM servers, base stations, access points, cellular telephones, tablet computers, wearable computing devices, portable media players, and various other computing devices.

[0009] This summary is intended to provide a brief overview of some of the subject matter described in this document. Therefore, it should be understood that the above-described features are merely examples and should not be construed as narrowing the scope or spirit of the subject matter described herein in any way. Other features, aspects, and advantages of the subject matter described herein will become apparent from the following detailed description, accompanying drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] A better understanding of the present subject matter may be obtained when the following detailed description of various embodiments is considered in conjunction with the following drawings, in which:

[0011] Figure 1A An exemplary wireless communication system is shown in accordance with some embodiments.

[0012] Figure 1B Examples of base stations and access points communicating with user equipment (UE) devices are shown in accordance with some embodiments.

[0013] Figure 2 An exemplary block diagram of a base station according to some embodiments is shown.

[0014] Figure 3 An exemplary block diagram of a server according to some embodiments is shown.

[0015] Figure 4 An exemplary block diagram of a UE according to some embodiments is shown.

[0016] Figure 5 An example block diagram of cellular communication circuitry is shown in accordance with some embodiments.

[0017] Figure 6A An example of a 5G network architecture according to some embodiments is shown, which combines 3GPP (e.g., cellular) and non-3GPP (e.g., non-cellular) access to the 5GCN.

[0018] Figure 6B An example of a 5G network architecture in accordance with some embodiments is shown, which combines dual 3GPP (e.g., LTE and 5G NR) access to 5GCN as well as non-3GPP access.

[0019] Figure 7 An example of a baseband processor architecture for a UE according to some embodiments is shown.

[0020] Figure 8 An example of signaling for a beam failure recovery (BFR) procedure is shown.

[0021] Figure 9A 、 Figure 9B 、 Figure 9C and Figure 9D An example of a BFR process based on a unified transmission configuration indicator (TCI) framework is shown in accordance with some embodiments.

[0022] Figure 10 A block diagram illustrating an example of a method for performing UE beam failure recovery based on a unified TCI framework according to some embodiments.

[0023] While the features described herein are susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and described in detail herein. It should be understood, however, that the drawings and detailed description thereof are not intended to limit this disclosure to the particular forms disclosed, but on the contrary, are intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the subject matter as defined by the appended claims. DETAILED DESCRIPTION

[0024] Acronyms

[0025] Various acronyms are used throughout this disclosure. The definitions of the most prominent acronyms used that may appear throughout this disclosure are as follows:

[0026] 3GPP: Third Generation Partnership Project

[0027] UE: User Equipment

[0028] RF: Radio Frequency

[0029] BS: Base Station

[0030] DL: Downlink

[0031] UL: Uplink

[0032] LTE: Long Term Evolution

[0033] NR: New Radio

[0034] 5GS: 5G system

[0035] 5GMM: 5GS Mobility Management

[0036] 5GC / 5GCN: 5G core network

[0037] IE: Information Element

[0038] CE: Control Element

[0039] MAC: Media Access Control

[0040] SSB: Synchronous Signal Block

[0041] CSI-RS: Channel State Information Reference Signal

[0042] PDCCH: Physical Downlink Control Channel

[0043] PDSCH: Physical Downlink Shared Channel

[0044] RRC: Radio Resource Control

[0045] RRM: Radio Resource Management

[0046] CORESET: Control resource set

[0047] TCI: Transmission Configuration Indicator

[0048] DCI: Downlink Control Indicator

[0049] the term

[0050] The following is a glossary of terms used in this disclosure:

[0051] Memory medium - any of various types of non-transitory memory devices or storage devices. The term "memory medium" is intended to include installation media, such as CD-ROMs, floppy disks, or tape devices; computer system memory or random access memory such as DRAM, DDR RAM, SRAM, EDO RAM, Rambus RAM, etc.; non-volatile memory such as flash memory, magnetic media, for example, hard drives or optical storage devices; registers or other similar types of memory elements, etc. The memory medium may also include other types of non-transitory memory or a combination thereof. In addition, the memory medium may be located in the first computer system that executes the program, or may be located in a different second computer system that is connected to the first computer system via a network such as the Internet. In the latter case, the second computer system may provide program instructions to the first computer for execution. The term "memory medium" may include two or more memory media that may reside in different locations in different computer systems connected, for example, via a network. The memory medium may store program instructions (e.g., expressed as a computer program) that can be executed by one or more processors.

[0052] Carrier Medium—storage media as described above, and physical transmission media such as a bus, network, and / or other physical transmission media that transport signals such as electrical, electromagnetic, or digital signals.

[0053] Programmable hardware elements—include various hardware devices that include multiple programmable function blocks connected via programmable interconnects. Examples include FPGAs (field programmable gate arrays), PLDs (programmable logic devices), FPOAs (field programmable object arrays), and CPLDs (complex PLDs). Programmable function blocks can range from fine-grained (combinational logic units or lookup tables) to coarse-grained (arithmetic logic units or processor cores). Programmable hardware elements may also be referred to as "configurable logic units."

[0054] Computer system (or computer)—any of various types of computing or processing systems, including personal computer systems (PCs), mainframe computer systems, workstations, network appliances, Internet appliances, personal digital assistants (PDAs), television systems, grid computing systems, or other devices or combinations of devices. In general, the term "computer system" can be broadly defined to encompass any device (or combination of devices) having at least one processor that executes instructions from a memory medium.

[0055] User Equipment (UE) (or "UE device") - any of various types of computer system devices that are mobile or portable and that perform wireless communication. Examples of UE devices include mobile phones or smartphones (e.g., iPhones, TM , based on Android TM phones), portable gaming devices (e.g., Nintendo DS TM PlayStation Portable TM 、Gameboy Advance TM , iPhone TM ), laptops, wearable devices (e.g., smart watches, smart glasses), PDAs, portable internet devices, music players, data storage devices, other handheld devices, unmanned aerial vehicles (UAVs) (e.g., drones), UAV controllers (UACs), etc. In general, the term "UE" or "UE device" may be broadly defined to encompass any electronic, computing, and / or telecommunication device (or combination of devices) that is easily transportable by a user and capable of wireless communication.

[0056] Base Station—The term “base station” has the full breadth of its ordinary meaning and includes at least a wireless communication station that is installed at a fixed location and used to communicate as part of a wireless telephone system or radio system.

[0057] Processing element (or processor)—refers to any element or combination of elements capable of performing functions in a device such as user equipment or a cellular network device. A processing element may include, for example, a processor and associated memory, portions or circuits of individual processor cores, entire processor cores, processor arrays, circuits such as ASICs (application-specific integrated circuits), programmable hardware elements such as field-programmable gate arrays (FPGAs), and any combination thereof.

[0058] Channel - the medium used to transmit information from a sender (transmitter) to a receiver. It should be noted that since the characteristics of the term "channel" may vary according to different wireless protocols, the term "channel" as used in the present invention may be considered to be used in a manner that is consistent with the standard of the type of device to which the term is used. In some standards, the channel width may be variable (e.g., depending on device capabilities, frequency band conditions, etc.). For example, LTE may support scalable channel bandwidths of 1.4 MHz to 20 MHz. In contrast, a WLAN channel may be 22 MHz wide, while a Bluetooth channel may be 1 MHz wide. Other protocols and standards may include different definitions of channels. In addition, some standards may define and use multiple types of channels, such as different channels for uplink or downlink and / or different channels for different purposes such as data, control information, etc.

[0059] Frequency band—The term “frequency band” has the full breadth of its ordinary meaning and includes at least a segment of the spectrum (eg, radio frequency spectrum) in which channels are used or set aside for the same purpose.

[0060] Wi-Fi—The term "Wi-Fi" (or WiFi) has the full scope of its ordinary meaning and includes at least wireless communication networks, or RATs, that are served by wireless LAN (WLAN) access points and provide connectivity to the Internet through those access points. Most modern Wi-Fi networks (or WLAN networks) are based on the IEEE 802.11 standard and are marketed under the name "Wi-Fi." Wi-Fi (WLAN) networks are distinct from cellular networks.

[0061] 3GPP access—refers to access (e.g., radio access technology) specified by the 3GPP standards. These accesses include, but are not limited to, GSM / GPRS, LTE, LTE-A, and / or 5G NR. Generally speaking, 3GPP access refers to various types of cellular access technologies.

[0062] Non-3GPP access - refers to any access (e.g., radio access technology) not specified by the 3GPP standards. These accesses include, but are not limited to, WiMAX, CDMA2000, Wi-Fi, WLAN, and / or fixed networks. Non-3GPP accesses can be divided into two categories, "trusted" and "untrusted": Trusted non-3GPP accesses can interact directly with the Evolved Packet Core (EPC) and / or 5G Core (5GC), while untrusted non-3GPP interworks with the EPC / 5GC via network entities (such as Evolved Packet Data Gateways and / or 5GNR Gateways). Generally speaking, non-3GPP access refers to various types of non-cellular access technologies.

[0063] Automatic—refers to an action or operation performed by a computer system (e.g., software executed by the computer system) or a device (e.g., a circuit, a programmable hardware element, an ASIC, etc.) without requiring user input to directly specify or execute the action or operation. Thus, the term "automatic" is in contrast to manual execution or specification of an action by a user, where the user provides input to directly execute the action. An automatic process may be initiated by input provided by a user, but the subsequent actions performed "automatically" are not specified by the user, i.e., they are not performed "manually," where the user specifies each action to be performed. For example, a user filling out an electronic form by selecting each field and providing input specifying information (e.g., by typing information, selecting checkboxes, radio selections, etc.) is manually filling out the form, even though the computer system must update the form in response to the user's actions. The form may be automatically filled out by a computer system, where the computer system (e.g., software executed on the computer system) analyzes the fields of the form and fills it out without requiring any user input to specify the answers to the fields. As indicated above, a user may invoke automatic filling of a form without participating in the actual filling out of the form (e.g., the user does not manually specify the answers to the fields, but rather they are automatically completed). This specification provides various examples of operations that are automatically performed in response to actions that a user has taken.

[0064] About—refers to a value that is close to being correct or exact. For example, about can refer to a value that is within 1% to 10% of the exact (or desired) value. However, it should be noted that the actual threshold value (or tolerance) may depend on the application. For example, in some embodiments, "about" may mean within 0.1% of some specified or desired value, while in various other embodiments, the threshold value may be, for example, 2%, 3%, 5%, etc., depending on the desires or requirements of a particular application.

[0065] Concurrency - refers to parallel execution or implementation, where tasks, processes, or programs are executed in an at least partially overlapping manner. For example, concurrency can be achieved using "strong" or strict parallelism, where tasks are executed (at least partially) in parallel on respective computing elements, or using "weak parallelism," where tasks are executed in an interleaved manner (e.g., by time multiplexing of execution threads).

[0066] Various components may be described as being "configured to" perform one or more tasks. In such contexts, "configured to" is a broad statement that generally means "having a structure" to perform one or more tasks during operation. Thus, a component can be configured to perform a task even when the component is not currently performing the task (e.g., a set of electrical conductors can be configured to electrically connect a module to another module even when the two modules are not connected). In some contexts, "configured to" can be a broad statement that generally means "having a structure" to carry out one or more tasks during operation. Thus, a component can be configured to perform a task even when the component is not currently turned on. Typically, the circuitry that forms the structure corresponding to "configured to" may include hardware circuitry.

[0067] For ease of description, various components may be described as performing one or more tasks. Such descriptions should be interpreted as including the phrase "configured to." Representing a component as being configured to perform one or more tasks expressly intends that the component not be interpreted under 35 U.S.C. §112(f).

[0068] Figure 1A and Figure 1B :Communication System

[0069] Figure 1A 1 shows a simplified exemplary wireless communication system according to some embodiments. Note that Figure 1A The system is merely one example of a possible system, and features of the present disclosure may be implemented in any of a variety of systems, as desired.

[0070] As shown, the exemplary wireless communication system includes a base station 102A that communicates with one or more user devices 106A, 106B, 106N, etc. via a transmission medium. Each user device may be referred to herein as a "user equipment" (UE). Therefore, user device 106 is referred to as a UE or UE device.

[0071] Base station (BS) 102A may be a base transceiver station (BTS) or a cell site ("cellular base station") and may include hardware that enables wireless communications with UEs 106A through 106N.

[0072] The communication area (or coverage area) of a base station may be referred to as a "cell." The base station 102A and the UE 106 may be configured to communicate over a transmission medium using any of a variety of radio access technologies (RATs), also known as wireless communication technologies or telecommunication standards, such as GSM, UMTS (associated with, for example, WCDMA or TD-SCDMA air interfaces), LTE, LTE-Advanced (LTE-A), 5G New Radio (5G NR), HSPA, 3GPP2 CDMA2000 (e.g., 1xRTT, 1xEV-DO, HRPD, eHRPD), and the like. Note that if the base station 102A is implemented in the context of LTE, it may alternatively be referred to as an "eNodeB" or "eNB." Note that if the base station 102A is implemented in the context of 5G NR, it may alternatively be referred to as a "gNodeB" or "gNB."

[0073] As shown, base station 102A may also be configured to communicate with network 100 (e.g., a cellular service provider's core network, a telecommunications network such as the Public Switched Telephone Network (PSTN), and / or the Internet, among other possibilities). Thus, base station 102A may facilitate communications between user devices and / or between user devices and network 100. In particular, cellular base station 102A may provide UE 106 with various communication capabilities, such as voice, SMS, and / or data services.

[0074] Base station 102A and other similar base stations (such as base stations 102B...102N) operating according to the same or different cellular communication standards can therefore be provided as a network of cells that can provide continuous or nearly continuous overlapping service to UEs 106A-N and similar devices over a geographic area via one or more cellular communication standards.

[0075] Thus, while base station 102A may serve as a "serving cell" for UEs 106A-N as shown in FIG1 , each UE 106 may also be able to receive signals from (and potentially be within communication range of) one or more other cells (which may be provided by base stations 102B-N and / or any other base stations), which may be referred to as "neighboring cells." Such cells may also be able to facilitate communications between user devices and / or between user devices and network 100. Such cells may include "macro" cells, "micro" cells, "pico" cells, and / or cells of any other variety of granularity in terms of service area size. For example, base stations 102A-102B shown in FIG1 may be macro cells, while base station 102N may be a micro cell. Other configurations are also possible.

[0076] In some embodiments, base station 102A may be a next-generation base station, such as a 5G New Radio (5G NR) base station or "gNB." In some embodiments, a gNB may be connected to a legacy Evolved Packet Core (EPC) network and / or to a New Radio Communications Core (NRC) network. Furthermore, a gNB cell may include one or more Transition and Reception Points (TRPs). Furthermore, a UE capable of operating in accordance with 5G NR may connect to one or more TRPs within one or more gNBs.

[0077] It should be noted that the UE 106 is capable of communicating using multiple wireless communication standards. For example, in addition to at least one cellular communication protocol (e.g., GSM, UMTS (associated with, for example, WCDMA or TD-SCDMA air interfaces), LTE, LTE-A, 5G NR, HSPA, 3GPP2 CDMA2000 (e.g., 1xRTT, 1xEV-DO, HRPD, eHRPD), etc.), the UE 106 can be configured to communicate using wireless networking (e.g., Wi-Fi) and / or peer-to-peer wireless communication protocols (e.g., Bluetooth, Wi-Fi peer-to-peer, etc.). If desired, the UE 106 can also or alternatively be configured to communicate using one or more global navigation satellite systems (GNSS, such as GPS or GLONASS), one or more mobile television broadcast standards (e.g., ATSC-M / H or DVB-H), and / or any other wireless communication protocols. Other combinations of wireless communication standards (including more than two wireless communication standards) are also possible.

[0078] Figure 1B A user equipment 106 (e.g., one of devices 106A through 106N) is shown in accordance with some embodiments in communication with a base station 102 and an access point 112. The UE 106 may be a device having cellular and non-cellular communication capabilities (e.g., Bluetooth, Wi-Fi, etc.), such as a mobile phone, handheld device, computer or tablet, or virtually any type of wireless device.

[0079] The UE 106 may include a processor configured to execute program instructions stored in a memory. The UE 106 may perform any of the method embodiments described herein by executing such stored instructions. Alternatively or in addition, the UE 106 may include a programmable hardware element, such as a field programmable gate array (FPGA) configured to perform any of the method embodiments described herein or any portion of any of the method embodiments described herein.

[0080] UE 106 may include one or more antennas for communicating using one or more wireless communication protocols or technologies. In some embodiments, UE 106 may be configured to communicate using, for example, CDMA2000 (1xRTT / 1xEV-DO / HRPD / eHRPD), LTE / LTE-Advanced, or 5G NR using a single shared radio and / or GSM, LTE, LTE-Advanced, or 5G NR using a single shared radio. The shared radio may be coupled to a single antenna or to multiple antennas (e.g., for MIMO) for performing wireless communications. Typically, the radio may include any combination of a baseband processor, analog radio frequency (RF) signal processing circuitry (e.g., including filters, mixers, oscillators, amplifiers, etc.), or digital processing circuitry (e.g., for digital modulation and other digital processing). Similarly, the radio may implement one or more receive and transmit chains using the aforementioned hardware. For example, UE 106 may share one or more portions of a receive and / or transmit chain between multiple wireless communication technologies such as those discussed above.

[0081] In some embodiments, the UE 106 may include a separate transmit chain and / or receive chain (e.g., including separate antennas and other radio components) for each wireless communication protocol with which it is configured to communicate. As another possibility, the UE 106 may include one or more radio components shared between multiple wireless communication protocols, and one or more radio components used exclusively by a single wireless communication protocol. For example, the UE 106 may include a shared radio component for communicating using either LTE or 5GNR (or LTE or 1xRTT, or LTE or GSM), and a separate radio component for communicating using each of Wi-Fi and Bluetooth. Other configurations are also possible.

[0082] Figure 2 :Block diagram of base station

[0083] Figure 2 1 shows an exemplary block diagram of a base station 102 according to some embodiments. Figure 3 The base station 102 is merely one example of a possible base station. As shown, the base station 102 may include a processor 204 that may execute program instructions for the base station 102. The processor 204 may also be coupled to a memory management unit (MMU) 240 or other circuit or device that may be configured to receive addresses from the processor 204 and translate those addresses into locations in memory (e.g., memory 260 and read-only memory (ROM) 250).

[0084] The base station 102 may include at least one network port 270. The network port 270 may be configured to couple to a telephone network and provide access to the network as described above in FIG. Figure 2 Multiple devices (such as UE device 106) of the telephone network described in.

[0085] The network port 270 (or an additional network port) may also or alternatively be configured to couple to a cellular network, such as a core network of a cellular service provider. The core network may provide mobility-related services and / or other services to a plurality of devices, such as the UE device 106. In some cases, the network port 270 may couple to a telephone network via the core network, and / or the core network may provide a telephone network (e.g., in other UE devices served by the cellular service provider).

[0086] In some embodiments, base station 102 may be a next-generation base station, such as a 5G New Radio (5G NR) base station, or "gNB." In such embodiments, base station 102 may be connected to a legacy evolved packet core (EPC) network and / or to an NR core (NRC) network. Furthermore, base station 102 may be considered a 5G NR cell and may include one or more transition and reception points (TRPs). Furthermore, UEs capable of operating in accordance with 5G NR may connect to one or more TRPs within one or more gNBs.

[0087] The base station 102 may include at least one antenna 234 and possibly multiple antennas. The at least one antenna 234 may be configured to function as a wireless transceiver and may be further configured to communicate with the UE device 106 via the radio 230. The antenna 234 communicates with the radio 230 via a communication chain 232. The communication chain 232 may be a receive chain, a transmit chain, or both. The radio 230 may be configured to communicate via various wireless communication standards, including but not limited to 5GNR, LTE, LTE-A, GSM, UMTS, CDMA2000, Wi-Fi, and the like.

[0088] The base station 102 may be configured to perform wireless communications using multiple wireless communication standards. In some cases, the base station 102 may include multiple radios that enable the base station 102 to communicate according to multiple wireless communication technologies. For example, as one possibility, the base station 102 may include an LTE radio component for performing communications according to LTE and a 5G NR radio component for performing communications according to 5G NR. In this case, the base station 102 may be capable of operating as both an LTE base station and a 5G NR base station. As another possibility, the base station 102 may include a multimode radio component capable of performing communications according to any one of multiple wireless communication technologies (e.g., 5G NR and Wi-Fi, LTE and Wi-Fi, LTE and UMTS, LTE and CDMA2000, UMTS and GSM, etc.).

[0089] As further described later herein, the base station 102 may include hardware and software components for implementing or supporting the implementation of the features described herein. The processor 204 of the base station 102 may be configured to implement or support some or all of the implementations of the methods described herein, for example, by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively, the processor 204 may be configured as a programmable hardware element such as an FPGA (field programmable gate array), or as an ASIC (application-specific integrated circuit), or a combination thereof. Alternatively (or in addition), in combination with one or more of the other components 230, 232, 234, 240, 250, 260, 270, the processor 204 of the base station 102 may be configured to implement or support some or all of the implementations of the features described herein.

[0090] Furthermore, as described herein, processor 204 may be comprised of one or more processing elements. In other words, one or more processing elements may be included in processor 204. Thus, processor 204 may include one or more integrated circuits (ICs) configured to perform the functions of processor 204. Furthermore, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform one or more functions of processor 204.

[0091] Additionally, as described herein, radio 230 may be comprised of one or more processing elements. In other words, one or more processing elements may be included in radio 230. Thus, radio 230 may include one or more integrated circuits (ICs) configured to perform the functions of radio 230. Furthermore, each integrated circuit may include circuitry (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of radio 230.

[0092] Figure 3 :Block diagram of the server

[0093] Figure 3 An exemplary block diagram of a server 104 according to some embodiments is shown. Note that Figure 3 The server 104 is just one example of a possible server. As shown, the server 104 may include a processor 344 that can execute program instructions for the server 104. The processor 344 may also be coupled to a memory management unit (MMU) 374, which may be configured to receive addresses from the processor 344 and translate those addresses to locations in memory (e.g., memory 364 and read-only memory (ROM) 354) or to other circuits or devices.

[0094] Server 104 may be configured to provide access network functionality to a plurality of devices, such as base station 102, UE device 106, and / or UTM 108, eg, as further described herein.

[0095] In some embodiments, server 104 may be part of a radio access network, such as a 5G New Radio (5G NR) access network. In some embodiments, server 104 may be connected to a legacy Evolved Packet Core (EPC) network and / or to a NR Core (NRC) network.

[0096] As further described later herein, the server 104 may include hardware and software components for implementing or supporting the features described herein. The processor 344 of the server 104 may be configured to implement or support implementing part or all of the methods described herein, for example, by executing program instructions stored on a storage medium (e.g., a non-transitory computer-readable memory medium). Alternatively, the processor 344 may be configured as a programmable hardware element such as an FPGA (field programmable gate array) or as an ASIC (application-specific integrated circuit) or a combination thereof. Alternatively (or in addition), in combination with one or more of the other components 354, 364, and / or 374, the processor 344 of the server 104 may be configured to implement or support implementing part or all of the features described herein.

[0097] Furthermore, as described herein, processor 344 may be comprised of one or more processing elements. In other words, one or more processing elements may be included in processor 344. Thus, processor 344 may include one or more integrated circuits (ICs) configured to perform the functions of processor 344. Furthermore, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of processor 344.

[0098] Figure 4 : UE block diagram

[0099] Figure 41 shows an exemplary simplified block diagram of a communication device 106 according to some embodiments. Figure 4 The block diagram of the communication device is only an example of a possible communication device. According to the embodiment, the communication device 106 can be a user equipment (UE) device, a mobile device or mobile station, a wireless device or wireless station, a desktop computer or computing device, a mobile computing device (e.g., a laptop, a notebook or a portable computing device), a tablet computer, an unmanned aerial vehicle (UAV), a UAV controller (UAC) and / or a combination of devices and other devices. As shown, the communication device 106 may include a group of components 400 configured to perform core functions. For example, the group of components can be implemented as a system on a chip (SOC), which may include parts for various purposes. Alternatively, the group of components 400 can be implemented as a separate component or group of components for various purposes. This group of components 400 can be (e.g., communicatively; directly or indirectly) coupled to various other circuits of the communication device 106.

[0100] For example, the communication device 106 may include various types of memory (e.g., including NAND flash memory 410), input / output interfaces such as a connector I / F 420 (e.g., for connecting to a computer system; a docking station; a charging station; input devices such as a microphone, a camera, a keyboard; output devices such as a speaker; etc.), a display 460 that may be integrated with the communication device 106 or external to the communication device 106, and cellular communication circuitry 430 such as for 5G NR, LTE, GSM, etc., and short-range to medium-range wireless communication circuitry 429 (e.g., Bluetooth TM and WLAN circuitry). In some embodiments, the communication device 106 may include wired communication circuitry (not shown), such as, for example, a network interface card for Ethernet.

[0101] Cellular communication circuitry 430 may be (e.g., communicatively; directly or indirectly) coupled to one or more antennas, such as antennas 435 and 436, as shown. Short-range to medium-range wireless communication circuitry 429 may also be (e.g., communicatively; directly or indirectly) coupled to one or more antennas, such as antennas 437 and 438, as shown. Alternatively, short-range to medium-range wireless communication circuitry 429 may be (e.g., communicatively; directly or indirectly) coupled to antennas 435 and 436, in addition to or in lieu of being (e.g., communicatively; directly or indirectly) coupled to antennas 437 and 438. Short-range to medium-range wireless communication circuitry 429 and / or cellular communication circuitry 430 may include multiple receive chains and / or multiple transmit chains for receiving and / or transmitting multiple spatial streams, such as in a multiple-input, multiple-output (MIMO) configuration.

[0102] In some embodiments, as further described below, the cellular communication circuitry 430 can include dedicated receive chains (including and / or coupled to (e.g., communicatively; directly or indirectly) dedicated processors and / or radios) for multiple RATs (e.g., a first receive chain for LTE and a second receive chain for 5G-NR). Furthermore, in some embodiments, the cellular communication circuitry 430 can include a single transmit chain that can switch between radios dedicated to specific RATs. For example, a first radio can be dedicated to a first RAT, such as LTE, and can communicate with a dedicated receive chain and a transmit chain shared with an additional radio, such as a second radio that can be dedicated to a second RAT (e.g., 5G NR) and can communicate with both the dedicated receive chain and the shared transmit chain.

[0103] The communication device 106 may also include and / or be configured for use with one or more user interface elements. User interface elements may include various elements such as a display 460 (which may be a touch screen display), a keyboard (which may be a separate keyboard or may be implemented as part of the touch screen display), a mouse, a microphone and / or speakers, one or more cameras, one or more buttons, and / or any of a variety of other elements capable of providing information to a user and / or receiving or interpreting user input.

[0104] The communication device 106 may also include one or more smart cards 445 with SIM (Subscriber Identity Module) functionality, such as one or more UICC cards (one or more Universal Integrated Circuit Cards) 445. It should be noted that the term "SIM" or "SIM entity" is intended to include any of various types of SIM implementations or SIM functionality, such as one or more UICC cards 445, one or more eUICCs, one or more eSIMs, removable or embedded, etc. In some embodiments, the UE 106 may include at least two SIMs. Each SIM may execute one or more SIM applications and / or otherwise implement SIM functionality. Thus, each SIM may be a single smart card that may be embedded, for example, soldered to a circuit board in the UE 106, or each SIM 410 may be implemented as a removable smart card. Thus, the SIM may be one or more removable smart cards (such as UICC cards, sometimes referred to as "SIM cards"), and / or the SIM 410 may be one or more embedded cards (such as embedded UICCs (eUICCs), sometimes referred to as "eSIMs" or "eSIM cards"). In some embodiments (such as when the SIM includes an eUICC), one or more of the SIMs may implement embedded SIM (eSIM) functionality; in such embodiments, a single SIM in the SIM may execute multiple SIM applications. Each SIM may include components such as a processor and / or memory; instructions for performing SIM / eSIM functionality may be stored in the memory and executed by the processor. In some embodiments, the UE 106 may include a combination of removable smart cards and fixed / non-removable smart cards (such as one or more eUICC cards that implement eSIM functionality), as needed. For example, the UE 106 may include two embedded SIMs, two removable SIMs, or a combination of one embedded SIM and one removable SIM. Various other SIM configurations are also contemplated.

[0105] As described above, in some embodiments, the UE 106 may include two or more SIM cards. Including two or more SIM cards in the UE 106 may allow the UE 106 to support two different phone numbers and may allow the UE 106 to communicate on two or more corresponding networks. For example, the first SIM card may support a first RAT, such as LTE, and the second SIM card 410 may support a second RAT, such as 5G NR. Of course, other implementations and RATs are also possible. In some embodiments, when the UE 106 includes two SIM cards, the UE 106 may support Dual SIM Dual Active (DSDA) functionality. DSDA functionality may allow the UE 106 to connect to two networks simultaneously (using two different RATs), or to maintain two connections simultaneously on the same or different networks supported by two different SIM cards using the same or different RATs. DSDA functionality may also allow the UE 106 to receive voice calls or data traffic simultaneously on any phone number. In some embodiments, voice calls may be packet-switched communications. In other words, voice calls may be received using Voice over LTE (VoLTE) technology and / or Voice over NR (VoNR) technology. In some embodiments, the UE 106 may support Dual SIM Dual Standby (DSDS) functionality. The DSDS functionality may allow either of the two SIM cards in the UE 106 to be on standby for a voice call and / or data connection. In DSDS, while a call / data call is established on one SIM card, the other SIM card is no longer active. In some embodiments, the DSDx functionality (DSDA or DSDS functionality) may be implemented using a single SIM card (e.g., an eUICC) that executes multiple SIM applications for different carriers and / or RATs.

[0106] As shown, the SOC 400 may include a processor 402 that may execute program instructions for the communication device 106 and a display circuit 404 that may perform graphics processing and provide display signals to a display 460. The processor 402 may also be coupled to a memory management unit (MMU) 440 (the MMU may be configured to receive addresses from the processor 402 and translate those addresses into locations in memory (e.g., memory 406, read-only memory (ROM) 450, NAND flash memory 410)) and / or to other circuits or devices (such as the display circuit 404, short-range to medium-range wireless communication circuitry 429, cellular communication circuitry 430, connector I / F 420, and / or display 460). The MMU 440 may be configured to perform memory protection and page table translation or setup. In some embodiments, the MMU 440 may be included as part of the processor 402.

[0107] As described above, the communication device 106 may be configured to communicate using wireless and / or wired communication circuits. The communication device 106 may be configured to perform a method for beam failure recovery based on a unified TCI framework, such as in 5G NR systems and beyond, as further described herein.

[0108] As described herein, the communication device 106 may include hardware and software components for implementing the above-described features of the communication device 106 to send a scheduling profile for power saving to the network. For example, by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium), the processor 402 of the communication device 106 may be configured to implement some or all of the features described herein. Alternatively (or in addition), the processor 402 may be configured as a programmable hardware element, such as an FPGA (field programmable gate array) or an ASIC (application-specific integrated circuit). Alternatively (or in addition), in combination with one or more of the other components 400, 404, 406, 410, 420, 429, 430, 440, 445, 450, 460, the processor 402 of the communication device 106 may be configured to implement some or all of the features described herein.

[0109] Furthermore, as described herein, processor 402 may include one or more processing elements. Thus, processor 402 may include one or more integrated circuits (ICs) configured to perform the functions of processor 402. Furthermore, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of processor 402.

[0110] Further, as described herein, cellular communication circuitry 430 and short-range to medium-range wireless communication circuitry 429 may each include one or more processing elements. In other words, one or more processing elements may be included in cellular communication circuitry 430, and similarly, one or more processing elements may be included in short-range to medium-range wireless communication circuitry 429. Thus, cellular communication circuitry 430 may include one or more integrated circuits (ICs) configured to perform the functions of cellular communication circuitry 430. Furthermore, each integrated circuit may include circuitry (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of cellular communication circuitry 430. Similarly, short-range to medium-range wireless communication circuitry 429 may include one or more ICs configured to perform the functions of short-range to medium-range wireless communication circuitry 429. Furthermore, each integrated circuit may include circuitry (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of short-range to medium-range wireless communication circuitry 429.

[0111] Figure 5 :Block diagram of cellular communication circuit

[0112] Figure 5 An exemplary simplified block diagram of a cellular communication circuit according to some embodiments is shown. Note that Figure 5 The block diagram of the cellular communication circuitry is only one example of one possible cellular communication circuitry. Depending on the embodiment, the cellular communication circuitry 530 (which may be the cellular communication circuitry 430) may be included in a communication device such as the communication device 106 described above. As described above, the communication device 106 may be a user equipment (UE) device, a mobile device or mobile station, a wireless device or wireless station, a desktop computer or computing device, a mobile computing device (e.g., a laptop, notebook, or portable computing device), a tablet computer, and / or a combination of devices, among other devices.

[0113] Cellular communication circuitry 530 may be coupled (eg, communicatively; directly or indirectly) to one or more antennas, such as ( Figure 4 In some embodiments, the cellular communication circuit 530 may include dedicated receive chains (including and / or coupled to (e.g., communicatively; directly or indirectly) dedicated processors and / or radio components) for multiple RATs (e.g., a first receive chain for LTE and a second receive chain for 5G-NR). For example, Figure 5 As shown, cellular communication circuitry 530 may include a modem 510 and a modem 520. Modem 510 may be configured for communication according to a first RAT, such as, for example, LTE or LTE-A, and modem 520 may be configured for communication according to a second RAT, such as, for example, 5G NR.

[0114] As shown, the modem 510 may include one or more processors 512 and a memory 516 in communication with the processor 512. The modem 510 may communicate with a radio frequency (RF) front end 530. The RF front end 530 may include circuitry for transmitting and receiving radio signals. For example, the RF front end 530 may include receive circuitry (RX) 532 and transmit circuitry (TX) 534. In some embodiments, the receive circuitry 532 may communicate with a downlink (DL) front end 550, which may include circuitry for receiving radio signals via antenna 335a.

[0115] Similarly, the modem 520 may include one or more processors 522 and a memory 526 in communication with the processor 522. The modem 520 may communicate with an RF front end 540. The RF front end 540 may include circuitry for transmitting and receiving radio signals. For example, the RF front end 540 may include receive circuitry 542 and transmit circuitry 544. In some embodiments, the receive circuitry 542 may communicate with a DL front end 560, which may include circuitry for receiving radio signals via the antenna 335b.

[0116] In some embodiments, the switch 570 can couple the transmit circuitry 534 to an uplink (UL) front end 572. Furthermore, the switch 570 can couple the transmit circuitry 544 to the UL front end 572. The UL front end 572 can include circuitry for transmitting radio signals via the antenna 336. Thus, when the cellular communication circuitry 530 receives an instruction to transmit according to a first RAT (e.g., via a transmit chain including the transmit circuitry 534 and the UL front end 572), the switch 570 can be switched to a first state that allows the modem 510 to transmit signals according to the first RAT (e.g., via a transmit chain including the transmit circuitry 534 and the UL front end 572). Similarly, when the cellular communication circuitry 530 receives an instruction to transmit according to a second RAT (e.g., via a transmit chain including the transmit circuitry 544 and the UL front end 572), the switch 570 can be switched to a second state that allows the modem 520 to transmit signals according to the second RAT (e.g., via a transmit chain including the transmit circuitry 544 and the UL front end 572).

[0117] In some embodiments, the cellular communication circuit 530 may be configured to perform a method for beam failure recovery based on a unified TCI framework, for example in 5G NR systems and beyond, as further described herein.

[0118] As described herein, the modem 510 may include hardware and software components for implementing the above-described features or for time-division multiplexing UL data for NSA NR operations and various other technologies described herein. For example, by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium), the processor 512 may be configured to implement part or all of the features described herein. Alternatively (or in addition), the processor 512 may be configured as a programmable hardware element such as an FPGA (field programmable gate array) or as an ASIC (application-specific integrated circuit). Alternatively (or in addition), in combination with one or more of the other components 530, 532, 534, 550, 570, 572, 335, and 336, the processor 512 may be configured to implement part or all of the feature parts described herein.

[0119] Furthermore, as described herein, processor 512 may include one or more processing elements. Thus, processor 512 may include one or more integrated circuits (ICs) configured to perform the functions of processor 512. Furthermore, each integrated circuit may include circuitry (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of processor 512.

[0120] As described herein, the modem 520 may include hardware and software components intended to implement the above-described features for transmitting a power-saving scheduling profile to a network, as well as various other techniques described herein. The processor 522 may be configured to implement a portion or all of the features described herein, for example, by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively (or in addition), the processor 522 may be configured as a programmable hardware element such as an FPGA (field programmable gate array), or as an ASIC (application-specific integrated circuit). Alternatively (or additionally), in combination with one or more of the other components 540, 542, 544, 550, 570, 572, 335, and 336, the processor 522 may be configured to implement a portion or all of the features described herein.

[0121] Furthermore, as described herein, processor 522 may include one or more processing elements. Thus, processor 522 may include one or more integrated circuits (ICs) configured to perform the functions of processor 522. Furthermore, each integrated circuit may include circuitry (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of processor 522.

[0122] Figure 6A 、 Figure 6B and Figure 7 : 5G Core Network Architecture—Interoperability with Wi-Fi

[0123] In some embodiments, the 5G core network (CN) can be accessed via (or through) a cellular connection / interface (e.g., via a 3GPP communication architecture / protocol) and a non-cellular connection / interface (e.g., a non-3GPP access architecture / protocol such as a Wi-Fi connection). Figure 6AAn example of a 5G network architecture according to some embodiments is shown, which combines 3GPP (e.g., cellular) and non-3GPP (e.g., non-cellular) access to a 5G CN. As shown, a user equipment device (e.g., such as UE 106) can access the 5G CN through both a radio access network (RAN, such as, for example, gNB 604, which can be base station 102) and an access point (e.g., AP 612). AP 612 can include a connection to the Internet 600 and a connection to a non-3GPP interworking function (N3IWF) 603 network entity. N3IWF can include a connection to the core access and mobility management function (AMF) 605 of the 5G CN. AMF 605 can include an instance of a 5G mobility management (5GMM) function associated with UE 106. In addition, the RAN (e.g., gNB 604) can also have a connection to AMF 605. Thus, the 5G CN can support unified authentication across both connections and allow UE 106 to be registered for access simultaneously via gNB 604 and AP 612. As shown, AMF 605 can include one or more functional entities associated with the 5G CN (e.g., network slice selection function (NSSF) 620, short message service function (SMSF) 622, application function (AF) 624, unified data management (UDM) 626, policy control function (PCF) 628, and / or authentication server function (AUSF) 630). Note that these functional entities can also be supported by the 5G CN's session management function (SMF) 606a and SMF 606b. AMF 605 can be connected to (or in communication with) SMF 606a. In addition, gNB 604 can communicate with (or be connected to) user plane function (UPF) 608a, which can also communicate with SMF 606a. Similarly, N3IWF 603 can communicate with UPF 608b, which can also communicate with SMF 606b. Both UPFs can communicate with data networks (e.g., DNs 610a and 610b) and / or the Internet 600 and Internet Protocol (IP) Multimedia Subsystem / IP Multimedia Core Subsystem (IMS) Core Network 610.

[0124] Figure 6BAn example of a 5G network architecture according to some embodiments is shown, which combines dual 3GPP (e.g., LTE and 5G NR) access to the 5G CN as well as non-3GPP access. As shown, a user equipment device (e.g., such as UE 106) can access the 5G CN via both a radio access network (RAN, such as gNB 604 or eNB 602, which can be base station 102) and an access point (e.g., AP 612). AP 612 can include a connection to the Internet 600 and a connection to the N3IWF 603 network entity. The N3IWF can include a connection to the 5G CN's AMF 605. The AMF 605 can include an instance of the 5G MM function associated with the UE 106. In addition, the RAN (e.g., gNB 604) can also have a connection to the AMF 605. Thus, the 5G CN can support unified authentication across both connections and allow the UE 106 to be registered for access via both the gNB 604 and the AP 612 simultaneously. In addition, the 5G CN may support dual registration of UEs on both legacy networks (e.g., LTE via eNB 602) and 5G networks (e.g., via gNB 604). As shown, the eNB 602 may have connections to a Mobility Management Entity (MME) 642 and a Serving Gateway (SGW) 644. The MME 642 may have connections to both the SGW 644 and the AMF 605. Furthermore, the SGW 644 may have connections to both the SMF 606a and the UPF 608a. As shown, the AMF 605 may include one or more functional entities associated with the 5G CN (e.g., NSSF 620, SMSF 622, AF 624, UDM 626, PCF 628, and / or AUSF 630). Note that the UDM 626 may also include Home Subscriber Server (HSS) functionality, and the PCF may also include a Policy and Charging Rules Function (PCRF). Note that these functional entities are also supported by the 5G CN's SMF 606a and SMF 606b. The AMF 606 can connect to (or communicate with) the SMF 606a. Furthermore, the gNB 604 can communicate with (or connect to) the UPF 608a, which can also communicate with the SMF 606a. Similarly, the N3IWF 603 can communicate with the UPF 608b, which can also communicate with the SMF 606b. Both UPFs can communicate with data networks (e.g., DNs 610a and 610b) and / or the Internet 600 and the IMS core network 610.

[0125] It should be noted that in various embodiments, one or more of the above-mentioned network entities may be configured to perform methods for improving security checks in 5G NR networks, including, for example, mechanisms for beam failure recovery based on a unified TCI framework in 5G NR systems and higher, such as as further described herein.

[0126] Figure 7 An example of a baseband processor architecture for a UE (eg, such as UE 106 ) is shown in accordance with some embodiments. Figure 7 The baseband processor architecture 700 described in the accompanying drawings may be implemented on one or more radio components (e.g., radio components 429 and / or 430 described above) or modems (e.g., modems 510 and / or 520) as described above. As shown, the non-access stratum (NAS) 710 may include a 5G NAS 720 and a legacy NAS 750. The legacy NAS 750 may include a communication connection with a legacy access stratum (AS) 770. The 5G NAS 720 may include a communication connection with a 5G AS 740 and a non-3GPP AS 730, as well as a Wi-Fi AS 732. The 5G NAS 720 may include functional entities associated with both access strata. Thus, the 5G NAS 720 may include multiple 5G MM entities 726 and 728 and 5G session management (SM) entities 722 and 724. The traditional NAS 750 may include functional entities such as a short message service (SMS) entity 752, an evolved packet system (EPS) session management (ESM) entity 754, a session management (SM) entity 756, an EPS mobility management (EMM) entity 758, and a mobility management (MM) / GPRS mobility management (GMM) entity 760. In addition, the traditional AS 770 may include functional entities such as an LTE AS 772, a UMTS AS 774, and / or a GSM / GPRS AS 776.

[0127] Thus, the baseband processor architecture 700 allows for a common 5G-NAS for both 5G cellular and non-cellular (e.g., non-3GPP access). Note that, as shown, the 5G MM can maintain a separate connection management and registration management state machine for each connection. In addition, a device (e.g., UE 106) can register to a single PLMN (e.g., 5G CN) using both 5G cellular access and non-cellular access. Furthermore, a device can be in a connected state in one access and idle state in another access, or vice versa. Finally, there may be common 5G-MM procedures (e.g., registration, deregistration, identification, authentication, etc.) for both accesses.

[0128] It should be noted that in various embodiments, one or more of the above-mentioned functional entities of the 5G NAS and / or 5G AS may be configured to perform methods for beam failure recovery based on a unified TCI framework, for example in 5G NR systems and higher versions, for example as further described herein.

[0129] Beam failure recovery

[0130] New cellular communication technologies are continually being developed to, for example, increase coverage, better meet various needs and use cases, and for a variety of other reasons. As new cellular communication technologies are developed and deployed, they may include certain features that are new or different from previously developed and deployed cellular communication technologies.

[0131] For example, recent standardization efforts (e.g., 3GPP standardization efforts) have introduced a unified transmission configuration indicator (TCI) framework. The unified TCI framework supports downlink (DL) TCI, uplink (UL) TCI, and joint DL / UL TCI. DL TCI can be used for beam indication for downlink signals (e.g., such as the physical downlink control channel (PDCCH) and / or the physical downlink shared channel (PDSCH)) and for all component carriers (CCs) in a frequency band or band group. UL TCI can be used for beam indication for uplink signals (e.g., such as the physical uplink control channel (PUCCH), the physical uplink shared channel (PUSCH), and / or the sounding reference signal (SRS)) and for all CCs in a frequency band or band group. Joint DL / UL TCI can be used for beam indication for uplink and downlink signals (e.g., such as the PDCCH, PDSCH, PUCCH, PUSCH, and / or SRS) and for all CCs in a frequency band or band group. Note that a CC can indicate a serving cell as defined in 3GPP TS 38.321. The three types of TCI indications defined by the unified TCI framework can be dynamically switched, for example, via a downlink configuration indicator (DCI), and / or semi-statically switched, for example, via medium access control (MAC) control elements (CEs) and / or radio resource control (RRC) signaling. Furthermore, unified TCI can be indicated by a MAC CE and / or a MAC CE and DCI. For example, the DCI can be used to down-select the TCI indicated by the MAC CE.

[0132] Additionally, recent standards (e.g., 3GPP Releases 15 and 16) include support for beam failure recovery (BFR) mechanisms, e.g. Figure 8As shown, UE 806 may receive an RRC configuration for BFR 810 from a base station (gNB 802). gNB 802 may provide one or more downlink (DL) reference signals (RSs) for beam failure detection (BFD) and / or candidate beam detection (CBD), such as, for example, DL RSs 812a-812n. UE 806 may then detect beam quality against the PDCCH to determine whether a beam failure has occurred, such as, for example, BFD / CBD 814a-814n. Note that the DL RSs may be configured by gNB 802, and gNB 802 may configure additional RSs for candidate beam detection. As shown, when UE 806 declares a beam failure (e.g., beam failure 816), the UE may send a beam failure recovery request (BFRQ) 818 to gNB 802 to report candidate beam information. gNB 802 may then provide a BFRQ response 820 to UE 806. Once UE 806 receives BFRQ response 820, UE 806 may wait for K symbols to apply the candidate beams. Note that after K symbols, where K is typically 28 symbols, UE 806 may automatically apply the candidate beams to the PDCCH and PUCCH. Additionally, UE 806 may also update the power control parameters for the PUCCH. Note that this process may be performed independently for each component carrier (CC).

[0133] However, based on the proposed unified TCI framework, common beams should be applied to CCs within a band or band group, eliminating the need to perform the entire BFR process for each CC. Furthermore, CC-specific BFR can result in higher UE power consumption, RS overhead for BFD / CBD / BFRQ, and potential beam mismatch across CCs.

[0134] The embodiments described herein provide systems, methods, and mechanisms for supporting UE beam failure recovery based on a unified TCI framework, including systems, methods, and mechanisms for supporting CC group (CCG)-specific BFR. These systems, methods, and mechanisms include support for CCG-specific BFD, CCG-specific CBF, CCG-specific BFRQ, and CCG-specific beam updates after BFR, as well as support for CCGs to indicate CCs within a band or band group.

[0135] In some embodiments, a base station (e.g., such as base station 102) may configure one BFR process for a CCG. For example, in a CCG, BFR may be configured in only one active bandwidth part (BWP) in the CC. In such a case, a UE (e.g., UE 106) may perform the entire BFR process in the CC. Then, after notifying the base station of the beam failure and waiting K symbols after receiving a BFR response from the base station, the UE may apply the candidate beams detected in the CC to a subset of channels or all channels corresponding to the previously indicated unified TCI state for all CCs in the CCG, e.g., Figure 9A As shown. Thus, as shown in the figure, the UE may alternately receive a beam failure detection (BFD) reference signal (RS) and a candidate beam detection (CBD) RS in a first CC (e.g., CC1) in a first frequency band or bandwidth (e.g., band 1). Then, upon detecting a beam failure, the UE may send a beam failure recovery request (BFRQ) to the base station. The base station may send a beam failure recovery (BFR) response. The UE may then wait for K symbols before applying the candidate beam detected in the CC. Additionally, the UE may apply the candidate beam detected in the CC to a second CC, e.g., CC2, which is also located in the first frequency band. In other words, since the second CC is in the same CCG as the first CC, the two CCs correspond to the previously indicated unified TCI state, and the UE may apply the candidate beam from the first CC to a subset of channels (CCs) and / or all channels (CCs) corresponding to the previously indicated unified TCI state. Note that, as an example, K may be selected to be 28 symbols plus an offset, where the offset may be used for cross-CC beam indication. The offset can be predefined and / or reported by the UE capability, and / or configured by the base station. Note that the UE can send BFRQ via PRACH or MAC CE. In some cases, whether to report BFRQ via PRACH or MAC CE can be predefined and / or configured by higher layer signaling (e.g., via RRC signaling or MAC CE). In some cases, whether to report BFRQ via PRACH or MAC CE can be determined by whether the CC configured with BFR and / or the primary cell (PCell) and / or the primary secondary cell (PSCell) is included in the CCG. Note that for PCell / PSCell, PRACH can be used; otherwise, MAC CE can be used.

[0136] In some embodiments, cross-CC BFD / CBD may be allowed for some load balancing, e.g. Figure 9B For example, Figure 9BAs shown, the UE may alternately perform the following operations: receiving a first BFD RS and a first CBD RS in a first CC in a first frequency band or bandwidth (e.g., frequency band 1), e.g., BFD RS 1 and CBD RS 1 in CC1; and receiving a second BFD RS and a second CBD RS in a second CC, e.g., BFD RS 2 and CBD RS 2 in CC2. Then, upon detecting a beam failure, the UE may send a BFRQ to the base station. The base station may send a BFR response. The UE may then wait K symbols before applying the candidate beam detected in the CC. Additionally, the UE may apply the candidate beam detected in the CC to a second CC, e.g., CC2, also in the first frequency band. In other words, since the second CC is in the same CCG as the first CC, the two CCs correspond to the previously indicated unified TCI state, and the UE may apply the candidate beam from the first CC to a subset of channels (CCs) and / or all channels (CCs) corresponding to the previously indicated unified TCI state. Furthermore, cross-CC BFRQ may also be allowed and / or supported. For example, if and / or when the CCG includes a PCell / PSCell, the BFRQ may be reported based on the PRACH configured in the PCell / PSCell. However, it should be noted that only one BFR process may be configured.

[0137] In some embodiments, a base station (such as base station 102) may configure multiple BFD processes and one BFRQ process for a CCG. Note that for different interference levels in different CCs, a UE (such as UE 106) may perform BFD for each CC independently, e.g., Figure 9C For example, Figure 9CAs shown, the UE may alternately receive the following: a BFD RS and a first CBD RS in a first CC in a first frequency band or bandwidth (e.g., Band 1), e.g., BFD RS and CBD RS 1 in CC1; and a BFD RS and a second CBD RS in a second CC, e.g., BFD RS and CBD RS 2 in CC2. Upon detecting a beam failure, the UE may then send a BFRQ to the base station. The base station may send a BFR response. The UE may then wait K symbols before applying the candidate beam detected in the CC. Additionally, the UE may apply the candidate beam detected in the CC to a second CC, e.g., CC2, also located in the first frequency band. In other words, since the second CC is located in the same CCG as the first CC, both CCs correspond to the previously indicated unified TCI state, and the UE may apply the candidate beam from the first CC to a subset of channels (CCs) and / or all channels (CCs) corresponding to the previously indicated unified TCI state. Furthermore, a common set of CBD RSs may be configured for BFR across all CCs in the CCG. Furthermore, the common CBD RSs may be from the same CC or different CCs. The UE may trigger BFRQ when one CC fails or a subset of CCs or all CCs in a CCG fails. Then, after waiting for K symbols after receiving a BFR response from the base station, the UE may apply the candidate beams to a subset of channels or all channels corresponding to the previously indicated unified TCI state for all CCs in the CCG. As an example, K may be selected as 28 symbols plus an offset, where the offset is used for cross-CC beam indication, which may be predefined and / or reported by the UE capability and / or configured by the base station. Note that BFRQ may be carried by PRACH and / or MAC CE. In some cases, reporting BFRQ by PRACH or MAC CE may be predefined and / or configured by higher layer signaling (e.g., by RRC signaling or MAC CE). In some cases, reporting BFRQ by PRACH or MAC CE may be determined by whether the CC configured with BFR and / or PCell / PSCell is included in the CCG and / or whether the PCell / PSCell fails. Note that for PCell / PSCell, PRACH may be used; otherwise, MAC CE may be used.

[0138] In some embodiments, a base station (e.g., such as base station 102) may configure multiple BFR processes for a CCG, e.g., Figure 9D For example, Figure 9DAs shown, a UE (such as UE 106) may alternately receive: a BFD RS and a CBD RS in a first CC in a first frequency band or bandwidth (e.g., Band 1), e.g., CC1; and a BFD RS and a CBD RS in a second CC, e.g., CC2. Upon detecting a beam failure, the UE may transmit a BFRQ to the base station. The base station may transmit a beam failure recovery (BFR) response. The UE may then wait for K symbols before applying the candidate beam detected in the CC. Additionally, the UE may apply the candidate beam detected in the CC to a second CC, e.g., CC2, also located in the first frequency band. In other words, since the second CC is located in the same CCG as the first CC, the two CCs correspond to the previously indicated unified TCI state, and the UE may apply the candidate beam from the first CC to a subset of channels (CCs) and / or all channels (CCs) corresponding to the previously indicated unified TCI state. Additionally, the UE may report the maximum number of CCs in the CCG for BFR / BFD as a UE capability. Note that if and / or when the UE reports that at most one CC is used for BFR, the UE may fall back to the above referenced Figure 9A and Figure 9B The method described. Then, after waiting K symbols after receiving the BFR response from the base station, the UE may apply the candidate beam to a subset of channels or all channels corresponding to the previously indicated unified TCI state for all CCs in the CCG. As an example, K may be selected to be 28 symbols plus an offset, where the offset is used for cross-CC beam indication, which may be predefined and / or reported by the UE capabilities and / or configured by the base station. The UE may trigger BFRQ when one or more CCs fail. In some cases, the UE may trigger BFRQ corresponding to one CC when more than one CC in each CC fails. Note that when multiple CCs fail, the UE may report BFRQ for one CC, which may be determined by CC ID and / or CC type (e.g., primary cell (PCell), primary secondary cell (PSCell), or secondary cell (SCell)), and the remaining process may be as described above with reference to Figure 9CAs described. In some cases, the UE may trigger BFRQ corresponding to multiple CCs when more than one CC in each CC fails. Note that if and / or when the UE reports different candidate beams in the BFRQ when multiple CCs fail, there may be multiple options for selecting the beam. For example, the UE may apply the candidate beam reported in the BFRQ for the failed CC with the lowest and / or highest CC, for example when the CCG includes a PCell / PSCEll and at least one SCell. As another example, the base station may indicate the beam to be applied based on the candidate beam reported in the BFRQ through a BFRQ response, for example when all CCs in the CCG are SCells. Note that all failed CC indices may be reported for BFR through a single MAC CE. As another example, when multiple CCs fail, the UE may only report one candidate beam.

[0139] In some embodiments, the target channel to which the candidate beam is applied can be determined by the indicated TCI. For example, if separate TCIs are provided (e.g., separate DL / UL TCIs) and when separate TCIs are provided, the candidate beam can be applied to downlink channels, such as PDCCH / PDSCH. As another example, if and / or when joint TCIs are provided, the candidate beam can be applied to both downlink and uplink channels, such as PDCCH / PDSCH / PUCCH / PUSCH / SRS. As another example, the candidate beam can always be applied to both UL / DL channels.

[0140] In some embodiments, if and / or when a candidate beam is applied to an uplink channel, some or all of the power control parameters for the uplink channel (e.g., P0, α, path loss reference signal, and closed-loop process index) may be reset to default values. The default values ​​may be common or different for different channels. In addition, the path loss may be derived based on the DL RS reported for candidate beam detection.

[0141] Figure 10 A block diagram illustrating an example of a method for performing UE beam failure recovery based on a unified TCI framework according to some embodiments. Figure 10 The method shown can be used in conjunction with any system, method or device shown in the figure and other devices. In various embodiments, some of the method elements shown can be performed concurrently in an order different from the order shown, or can be omitted. Additional method elements can also be performed as needed. As shown in the figure, the method can be operated as follows.

[0142] At 1002, a UE, such as UE 106, may receive a configuration of a beam failure recovery (BFR) procedure for a component carrier (CC) group (CCG) from a base station, such as base station 102. The CCG may include at least two CCs.

[0143] At 1004, the UE may periodically receive at least a first beam failure detection (BFD) reference signal (RS) and a first candidate beam detection (CBD) RS in a first CC among at least two CCs included in a CCG from a base station.

[0144] At 1006, the UE may detect a beam failure in at least the first CC based on the first BFD RS.

[0145] At 1008, the UE may send a beam failure recovery (BFR) request (BFRQ) to the base station. The BFRQ may include a candidate beam selected based on at least the first CBD RS. The BFRQ may be sent via a physical random access channel (PRACH) or a medium access control (MAC) control element (CE). In some cases, whether the BFRQ is sent via PRACH or MAC CE may be predefined, for example, by a standard and / or network / UE preference. In some cases, whether the BFRQ is sent via PRACH or MAC CE may be configured via a higher layer signaling exchange between the UE and the base station. The higher layer signaling may include one of radio resource control signaling or MAC CE. In some cases, the UE may determine whether to send the BFRQ via PRACH or MAC CE based, for example, at least in part, on a CC configured with BFR or whether the primary cell or the primary and secondary cells are included in a CCG. For example, when the primary cell or the primary and secondary cells are included in a CCG, the BFRQ may be sent via PRACH. As another example, when the primary cell or the primary / secondary cell is not included in the CCG, the BFRQ may be transmitted via the MAC CE.

[0146] At 1010, the UE may receive a BFR response from a base station.

[0147] At 1012, the UE may apply the candidate beam to the first CC and at least one additional CC in the CCG. In some cases, the UE may wait a configured number of symbols after receiving the BFR response before applying the candidate beam. The configured number of symbols may include an offset. The offset may indicate a cross-CC beam indication. In some cases, the UE may report the offset via UE capabilities. In some cases, the UE may receive a configuration message from the base station that may indicate the offset. In addition, the offset may be predefined, for example, by a standard and / or network / UE preference.

[0148] In some cases, applying the candidate beam to the first CC and the at least one additional CC in the CCG may include the UE applying the candidate beam to a subset of channels corresponding to a previously indicated unified transmission configuration indicator (TCI) state for all CCs in the CCG. In some cases, applying the candidate beam to the first CC and the at least one additional CC in the CCG may include the UE applying the candidate beam to all channels corresponding to a previously indicated unified TCI state for all CCs in the CCG.

[0149] In some cases, the UE may determine the target channel to which the candidate beam is applied based on the indicated TCI. For example, when the downlink TCI and the uplink TCI are indicated, the candidate beam may be applied to the downlink channel. Note that the downlink channel may include at least one of the physical downlink control channel (PDCCH) or the physical downlink shared channel (PDSCH). As another example, when a joint TCI is indicated, the candidate beam may be applied to the downlink channel and the uplink channel. Note that the downlink channel may include at least one of the PDCCH or the PDSCH, and the uplink channel may include at least one of the physical uplink control channel (PUCCH), the physical uplink shared channel (PUSCH), or the sounding reference signal (SRS). As another example, the candidate beam may be applied to the downlink channel and the uplink channel. Note that the downlink channel may include at least one of the PDCCH or the PDSCH, and the uplink channel may include at least one of the PUCCH, the PUSCH, or the SRS. In some cases, when applying a candidate beam to an uplink channel, the UE may reset at least some of the power control parameters associated with the uplink channel based on default values. Note that the power control parameters may include one or more of a P0 parameter, a path loss reference signal index, or a closed-loop process index. The default value may be common for all channels in a CCG, or each channel in the CCG may be associated with a default value. In some cases, the UE may derive the path loss based on the downlink RS reported for the CBD.

[0150] In some cases, the configuration for the BFR process may configure BFR only in one active bandwidth portion in the first CC, may configure cross-CC BFD RS and CBD RS, may configure multiple BFD RSs, and / or may configure multiple BFR processes for a CCG.

[0151] In some cases, when multiple BFD RSs are configured for the BFR process, the UE may receive a BFD RS for each CC in the CCG independently. In some cases, the BFR process may be configured with a common BFD RS for all CCs in the CCG. In some cases, the UE may trigger BFRQ based on detecting a failure of at least one CC in the CCG and / or based on detecting a failure of a subset of CCs in the CCG.

[0152] In some cases, when the BFR process configuration configures multiple BFR processes for a CCG, the UE may report the maximum number of CCs used for BFR / BFD in the CCG as a UE capability. Note that when the UE reports a maximum of one CC for BFR, the BFR process configuration may configure one BFR process for the CCG. In some cases, the UE may trigger a BFRQ based on detecting a failure of at least one CC in the CCG. In such cases, when multiple CCs fail, the UE may report a BFRQ for one CC. A CC may be identified by at least one of a CC index or a CC type. Note that CC types may include: a first CC type in which a primary cell, a primary / secondary cell, or a secondary cell is included in the CC; and a second CC type in which a primary cell, a primary / secondary cell, or a secondary cell is not included in the CC. In some cases, the UE may report a BFRQ for one CC based on a CCG that includes the primary cell or the primary / secondary cell and at least one secondary cell. In some cases, when multiple CCs fail, the UE may report a BFRQ for multiple CCs. In addition, when the UE reports different candidate beams in the BFRQ when multiple CCs fail, the UE may apply the candidate beam reported in the BFRQ for the failed CC with the lowest CC index, apply the candidate beam reported in the BFRQ for the failed CC with the highest CC index, and / or receive an indication of the beam to be applied from the base station based on the candidate beam reported in the BFRQ in the BFR response. In some cases, when multiple CCs fail, the UE may be restricted to reporting only one candidate beam. In some cases, the UE may report the BFRQ for multiple CCs based on a CCG that includes only a secondary cell. In such cases, the BFRQ may include an index for each failed CC, and these indexes may be included in the MAC CE.

[0153] The embodiments described herein provide systems, methods, and mechanisms for beam failure recovery based on a unified TCI framework, for example, in 5G NR systems and beyond. In some embodiments, a UE (such as UE 106) may

[0154] It is understood that the use of personally identifiable information should be subject to privacy policies and practices that are generally recognized to meet or exceed industry or government requirements for maintaining user privacy. Specifically, personally identifiable information data should be managed and processed to minimize the risk of unintentional or unauthorized access or use, and the nature of authorized use should be clearly stated to users.

[0155] The embodiments of the present disclosure may be implemented in any of a variety of forms. For example, some embodiments may be implemented as computer-implemented methods, computer-readable storage media, or computer systems. Other embodiments may be implemented using one or more custom-designed hardware devices such as ASICs. Other embodiments may be implemented using one or more programmable hardware elements such as FPGAs.

[0156] In some embodiments, a non-transitory computer-readable storage medium may be configured such that it stores program instructions and / or data, wherein the program instructions, if executed by a computer system, cause the computer system to perform a method, such as any one of the method embodiments described herein, or any combination of the method embodiments described herein, or any subset of any of the method embodiments described herein or any combination of such subsets.

[0157] In some embodiments, a device (e.g., UE 106) may be configured to include a processor (or a group of processors) and a memory medium, wherein the memory medium stores program instructions, wherein the processor is configured to read and execute the program instructions from the memory medium, wherein the program instructions are executable to implement any of the various method embodiments described herein (or any combination of the method embodiments described herein, or any subset of any of the method embodiments described herein, or any combination of such subsets). The device may be implemented in any of various forms.

[0158] By interpreting each message / signal X received by a user equipment (UE) in the downlink as a message / signal X transmitted by the base station, and interpreting each message / signal Y transmitted by the UE in the uplink as a message / signal Y received by the base station, any of the methods for operating a UE described herein may become the basis for the corresponding method for operating a base station.

[0159] Although the above embodiments have been described in considerable detail, numerous variations and modifications will become apparent to those skilled in the art once the above disclosure is fully appreciated. It is intended that the following claims be interpreted to encompass all such variations and modifications.

Claims

1. A user equipment device UE, comprising: at least one antenna; at least one radio component, wherein the at least one radio component is configured to perform cellular communications using at least one radio access technology (RAT); one or more processors coupled to the at least one radio, wherein the one or more processors and the at least one radio are configured to perform communications; The one or more processors are configured to cause the UE to: receiving, from a base station, a configuration of a beam failure recovery (BFR) procedure for a component carrier group (CCG), wherein the CCG includes at least two CCs; periodically receiving at least a first beam failure detection (BFD) reference signal (RS) and a first candidate beam detection (CBD) reference signal (RS) in a first CC in the CCG from the base station based on the configuration; detecting a beam failure in at least the first CC based on the first BFD RS; Sending a beam failure recovery (BFR) request (BFRQ) to the base station, wherein the BFRQ includes a candidate beam selected based on at least the first CBDRS; receiving a BFR response from the base station; as well as The candidate beams are applied to the first CC and at least one additional CC in the CCG.

2. The UE according to claim 1, Wherein the one or more processors are further configured to cause the UE to wait a configured number of symbols after receiving the BFR response before applying the candidate beam, wherein the configured number of symbols includes an offset, and wherein the offset interprets a cross-CC beam indication.

3. The UE according to claim 2, The one or more processors are further configured to cause the UE to report the offset via UE capabilities.

4. The UE according to claim 2, The one or more processors are further configured to cause the UE to receive a configuration message indicating the offset from the base station.

5. The UE according to claim 1, The BFRQ is sent via a physical random access channel PRACH or a medium access control MAC control element CE.

6. The UE according to claim 5, Whether the BFRQ is sent via the PRACH or the MAC CE is predefined or configured via a higher layer signaling exchange between the UE and the base station, and wherein the higher layer signaling includes one of radio resource control signaling or MAC CE.

7. The UE according to claim 5, The UE determines whether to send the BFRQ via the PRACH or the MAC CE based on whether a CC configured with BFR or a primary cell or a primary / secondary cell is included in the CCG.

8. The UE according to claim 7, in, When the primary cell or the primary / secondary cell is included in the CCG, the BFRQ is sent via the PRACH, and when the primary cell or the primary / secondary cell is not included in the CCG, the BFRQ is sent via the MAC CE.

9. The UE according to claim 1, in, To apply the candidate beam to the first CC and the at least one additional CC in the CCG, the one or more processors are further configured to cause the UE to perform at least one of the following: Applying the candidate beam to a subset of channels corresponding to a previously indicated unified transmission configuration indicator (TCI) state for all CCs in the CCG; or The candidate beams are applied to all channels corresponding to the previously indicated unified transmission configuration indicator (TCI) state for all CCs in the CCG.

10. A device for equipping a UE, comprising: Memory; as well as at least one processor in communication with the memory, wherein the at least one processor is configured to: receiving, from a base station, a configuration of a beam failure recovery (BFR) procedure for a component carrier group (CCG), wherein the CCG includes at least two CCs; periodically receiving at least a first beam failure detection (BFD) reference signal (RS) and a first candidate beam detection (CBD) reference signal (RS) in a first CC in the CCG from the base station based on the configuration; Sending a beam failure recovery (BFRQ) request to the base station based on detecting a beam failure in at least the first CC, wherein the BFRQ includes a candidate beam selected based on at least the first CBD RS; as well as The candidate beam is applied to the first CC and at least one additional CC in the CCG in response to receiving a BFR response from the base station.

11. The device according to claim 10, wherein the at least one processor is further configured to: The target channel to which the candidate beam is to be applied is determined based on the indicated transmission configuration indicator TCI, wherein when the downlink TCI and the uplink TCI are indicated, the candidate beam is applied to the downlink channel, wherein when the joint TCI is indicated, the candidate beam is applied to the downlink channel and the uplink channel, wherein the downlink channel includes at least one of the physical downlink control channel PDCCH or the physical downlink shared channel PDSCH, and wherein the uplink channel includes at least one of the physical uplink control channel PUCCH, the physical uplink shared channel PUSCH or the sounding reference signal SRS.

12. The device according to claim 10, The candidate beams are applied to a downlink channel and an uplink channel, wherein the downlink channel includes at least one of a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH), and wherein the uplink channel includes at least one of a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH) or a sounding reference signal (SRS).

13. The device according to claim 10, in, When applying the candidate beam to an uplink channel, the at least one processor is further configured to reset at least a portion of power control parameters associated with the uplink channel based on default values, wherein the power control parameters include one or more of a P0 parameter, a path loss reference signal index, or a closed-loop process index, and wherein the default value is common to all channels in the CCG, or each channel in the CCG is associated with a default value.

14. The device according to claim 10, Wherein the at least one processor is further configured to derive path loss based on downlink RS reported for CBD.

15. A method performed by a user equipment device (UE), the method comprising: receiving, from a base station, a configuration of a beam failure recovery (BFR) procedure for a component carrier group (CCG), wherein the CCG includes at least two CCs; periodically receiving at least a first beam failure detection (BFD) reference signal (RS) and a first candidate beam detection (CBD) reference signal (RS) in a first CC in the CCG from the base station based on the configuration; Sending a beam failure recovery (BFRQ) request to the base station based on detecting a beam failure in at least the first CC, wherein the BFRQ includes a candidate beam selected based on at least the first CBD RS; as well as The candidate beam is applied to the first CC and at least one additional CC in the CCG in response to receiving a BFR response from the base station.

16. The method according to claim 15, The configuration for the BFR process configures BFR only in an active bandwidth portion in the first CC.

17. The method according to claim 15, The configuration of the BFR process configures cross-CC BFD RS and CBD RS.

18. The method according to claim 15, wherein the configuration for the BFR procedure configures multiple BFD RSs, wherein the UE independently receives a BFD RS for each CC in the CCG, and wherein the configuration for the BFR procedure configures a common BFD RS for all CCs in the CCG.

19. The method of claim 18, further comprising at least one of the following: triggering the BFRQ based on detecting a failure of at least one CC in the CCG; or The BFRQ is triggered based on detecting a failure of a subset of CCs in the CCG.

20. The method according to claim 15, The configuration for the BFR process configures multiple BFR processes for the CCG, wherein the method further comprises reporting a maximum number of CCs for BFR / BFD in the CCG as a UE capability, and wherein when the UE reports a maximum of one CC for BFR, the configuration for the BFR process configures one BFR process for the CCG.

21. The method according to claim 20, further comprising: The BFRQ is triggered based on detecting a failure of at least one CC in the CCG, wherein, when multiple CCs fail, the UE reports a BFRQ for one CC, wherein the one CC is determined by at least one of a CC index or a CC type, and wherein the CC type includes: a first CC type, wherein a primary cell, a primary secondary cell, or a secondary cell is included in the CC; and a second CC type, wherein the primary cell, the primary secondary cell, or the secondary cell is not included in the CC.

22. The method according to claim 21, The UE reports the BFRQ for one CC based on the CCG including a primary cell or a primary secondary cell and at least one secondary cell.

23. The method of claim 21, further comprising: Reporting a BFRQ for multiple CCs when multiple CCs fail, wherein when the UE reports different candidate beams in the BFRQ when the multiple CCs fail, the UE performs at least one of the following: Applying the candidate beam reported in the BFRQ for the failed CC with the lowest CC index; Apply the candidate beam reported in the BFRQ for the failed CC with the highest CC index; or An indication of a beam to be applied is received from the base station based on the candidate beams reported in the BFRQ in the BFR response.

24. The method according to claim 15, in, When multiple CCs fail, the UE reports only one candidate beam.

25. The method according to claim 15, The UE reports a BFRQ for a plurality of CCs based on the CCG including only a secondary cell, wherein the BFRQ includes an index for each failed CC, and wherein the index is included in a medium access control (MAC) control element (CE).

26. A non-transitory computer-readable memory medium storing program instructions, the program instructions being executable by a processing circuit to cause a user equipment device (UE) to perform the method according to any one of claims 15 to 25.

27. A computer program product comprising program instructions, wherein the program instructions are executable by a processing circuit to cause a user equipment device (UE) to perform the method according to any one of claims 15 to 25.

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