UE capabilities for TCI state configuration or activation

Abstract

A user equipment (UE) determines UE capabilities associated with a joint downlink (DL) and uplink (UL) transmission configuration indicator (TCI) state, the joint DL and UL TCI state indicating a common beam for communication in DL and UL, and sends an indication of the UE capabilities associated with the joint DL and UL TCI state to a base station. The UE may determine UE capabilities associated with a UL TCI state for uplink communication, and may send an indication of the UE capabilities to the base station. The base station receives the UE capabilities and configures or activates one or more joint DL and UL TCI states or UL TCI states based on the UE capabilities.

Description

Technical Field

[0001] The present disclosure relates generally to communication systems and, more particularly, to wireless communications including transmission configuration indicator (TCI) states. Background Art

[0002] Wireless communication systems have been widely deployed to provide a variety of telecommunication services such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources. Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.

[0003] Such multiple access technologies have been adopted in a variety of telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a city-wide, national-wide, regional-wide, and even global scale. An exemplary telecommunication standard is 5G New Radio (NR). 5G NR is part of the continuous mobile broadband evolution released by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT)) and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra-reliable low-latency communications (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There is a need to further improve 5G NR technology. In addition, these improvements may also be applicable to other multiple access technologies and telecommunication standards that employ these technologies. Summary of the invention

[0004] In order to have a basic understanding of one or more aspects of the present invention, a brief summary of these aspects is given below. This summary is not an exhaustive overview of all expected aspects, nor is it intended to identify the key or important elements of all aspects, or to describe the scope of any or all aspects. Its only purpose is to present some concepts of one or more aspects in a simple form as a prelude to the detailed description that follows.

[0005] In one aspect of the present disclosure, a method, computer readable medium, and apparatus for wireless communication at a user equipment (UE) are provided. The apparatus determines UE capabilities associated with a joint downlink (DL) and uplink (UL) transmission configuration indicator (TCI) state, the joint DL and UL TCI state indicating a common beam for communication in DL and UL; and sends an indication of the UE capabilities associated with the joint DL and UL TCI state to a base station.

[0006] In another aspect of the present disclosure, a method, computer readable medium, and apparatus for wireless communication at a UE are provided. The apparatus determines UE capabilities associated with a UL TCI state, wherein the UL TCI state indicates a beam used for communication in the UL; and sends an indication of the UE capabilities associated with the UL TCI state to a base station.

[0007] In another aspect of the present disclosure, a method, computer readable medium, and apparatus for wireless communication at a UE are provided. The apparatus receives from the UE an indication of UE capabilities associated with a joint DL and UL TCI state, the joint DL and UL TCI state indicating a common beam for communication in DL and UL. The apparatus configures or activates one or more joint DL and UL TCI states for the UE based on the UE capabilities.

[0008] In another aspect of the present disclosure, a method, computer readable medium, and apparatus for wireless communication at a base station are provided. The apparatus receives an indication of UE capabilities associated with a UL TCI state from a UE, the UL TCI state indicating a common beam for UL communication. The apparatus configures or activates one or more UL TCI states for the UE based on the UE capabilities.

[0009] To achieve the foregoing and related ends, one or more aspects include the features described in detail below and particularly pointed out in the claims. The following description and the accompanying drawings describe in detail certain exemplary features of one or more aspects. However, these features are merely illustrative of some of the various ways in which the basic principles of these various aspects can be employed, and this description is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a diagram showing an example of a wireless communication system and an access network.

[0011] Figure 2A is a diagram illustrating an example of a first frame according to various aspects of the present disclosure.

[0012] Figure 2Bis a diagram illustrating an example of DL channels within a subframe according to various aspects of the present disclosure.

[0013] Figure 2C is a diagram illustrating an example of a second frame according to various aspects of the present disclosure.

[0014] Figure 2D is a diagram illustrating an example of UL channels within a subframe in accordance with various aspects of the present disclosure.

[0015] Figure 3 is a diagram showing an example of a base station and a user equipment (UE) in an access network.

[0016] Figure 4 is an example communication flow between a UE and a base station that includes providing UE capability information related to joint DL and UL TCI states.

[0017] Figure 5 is an example communication flow between a UE and a base station that includes providing UE capability information related to UL TCI status.

[0018] Figure 6 A flow chart of a wireless communication method.

[0019] Figure 7 A flow chart of a wireless communication method.

[0020] Figure 8 is a diagram illustrating an example of a hardware implementation for an example apparatus.

[0021] Fig. 9 A flow chart of a wireless communication method.

[0022] Fig.10 A flow chart of a wireless communication method.

[0023] Fig.11 is a diagram illustrating an example of a hardware implementation for an example apparatus. DETAILED DESCRIPTION

[0024] The specific embodiments described below in conjunction with the accompanying drawings are intended only to describe various configurations, rather than to represent that the concepts described herein can be implemented only in these configurations. In order to have a thorough understanding of the various concepts, the specific embodiments include specific details. However, it is obvious to those of ordinary skill in the art that these concepts can be implemented without using these specific details. In some instances, in order to avoid obscuring these concepts, known structures and components are shown in block diagram form.

[0025] Some aspects of telecommunication systems are now presented with reference to various devices and methods. These devices and methods will be described in the following detailed description and depicted in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as "elements"). Such elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0026] For example, an element or any part of an element or any combination of elements can be implemented as a "processing system" including one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gate logic, separate hardware circuits, and other suitable hardware configured to perform various functions described throughout the present disclosure. One or more processors in a processing system can execute software. Software should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, processes, functions, etc., whether they are referred to as software, firmware, middleware, microcode, hardware description languages, or other terms.

[0027] Therefore, in one or more exemplary embodiments, the functions described herein can be implemented with hardware, software, or any combination thereof. When implemented using software, these functions can be stored or encoded into one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media. Storage media can be any available medium that a computer can access. By way of example and not limitation, such computer-readable media can include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, a combination of computer-readable media of the aforementioned types, or any other medium that can be used to store computer executable code in the form of instructions or data structures and can be accessed by a computer.

[0028] Figure 11 is a diagram showing an example of a wireless communication system and access network 100. The wireless communication system (also referred to as a wireless wide area network (WWAN)) includes a base station 102, a UE 104, an evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). The base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). A macro cell includes a base station. A small cell includes a femto cell, a pico cell, and a micro cell.

[0029] The base station 102 configured for 4G LTE (collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interact with the EPC 160 via a first backhaul link 132 (e.g., an S1 interface). The base station 102 configured for 5G NR (collectively referred to as the Next Generation RAN (NG-RAN)) can interact with the core network 190 via a second backhaul link 184. Among other functions, the base station 102 can perform one or more of the following functions: transmission of user data, wireless channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), user and device tracking, RAN information management (RIM), paging, positioning, and transmission of warning messages. The base stations 102 may communicate directly or indirectly with each other (e.g., via the EPC 160 or the core network 190) via the third backhaul link 134 (e.g., an X2 interface). The first backhaul link 132, the second backhaul link 184, and the third backhaul link 134 may be wired or wireless.

[0030] Base station 102 can communicate wirelessly with UE 104. Each of base stations 102 can provide communication coverage for a corresponding geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, a small cell 102' can have a coverage area 110' that overlaps with the coverage area 110 of one or more macro base stations 102. A network including small cells and macro cells can be referred to as a heterogeneous network. In addition, a heterogeneous network can also include a home node B (eNB) (HeNB), which can provide services to a restricted group called a closed user group (CSG). The communication link 120 between base station 102 and UE 104 can include an uplink (UL) (also called a reverse link) transmission from UE 104 to base station 102 and / or a downlink (DL) (also called a forward link) transmission from base station 102 to UE 104. The communication link 120 can use multiple input multiple output (MIMO) antenna technology, which includes spatial multiplexing, beamforming and / or transmit diversity. These communication links can be through one or more carriers. The base station 102 / UE 104 may use up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) of bandwidth for each carrier allocated in a carrier aggregation for a total of up to Yx MHz (x component carriers) for transmission in each direction. The carriers may be adjacent to each other or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL ​​compared to UL). The component carriers may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell) and the secondary component carrier may be referred to as a secondary cell (SCell).

[0031] Some UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use DL / UL WWAN spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). D2D communication may be performed using various wireless D2D communication systems (e.g., WiMedia, Bluetooth, ZigBee, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR).

[0032] The wireless communication system may also include a Wi-Fi access point (AP) 150 that communicates with a Wi-Fi station (STA) 152 via a communication link 154 (e.g., in a 5 GHz unlicensed spectrum, etc.). When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) before communicating to determine whether the channel is available.

[0033] The small cell 102' can operate in a licensed and / or unlicensed spectrum. When operating in an unlicensed spectrum, the small cell 102' can adopt NR and use the same unlicensed spectrum (e.g., 5 GHz, etc.) used by the Wi-Fi AP 150. The small cell 102' adopting NR in the unlicensed spectrum can improve the coverage of the access network and / or increase the capacity of the access network.

[0034] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc. based on frequency / wavelength. In 5G NR, two initial operating bands have been identified with the frequency range names FR1 (410MHz-7.125GHz) and FR2 (24.25GHz-52.6GHz). The frequencies between FR1 and FR2 are typically referred to as mid-band frequencies. Although a portion of FR1 is greater than 6GHz, FR1 is often (interchangeably) referred to as the "sub-6GHz" band in various documents and articles. A similar naming issue sometimes occurs with FR2, which is often (interchangeably) referred to as the "millimeter wave" band in various documents and articles, although it is different from the extremely high frequency (EHF) band (30GHz-300 GHz), which is defined as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0035] In view of the above, unless otherwise explicitly stated, it should be understood that the term "sub-6 GHz" and the like (if used herein) can broadly refer to frequencies less than 6 GHz, which can be within FR1, or can include mid-band frequencies. In addition, unless otherwise explicitly stated, it should be understood that the term "millimeter wave" and the like (if used herein) can broadly refer to frequencies including mid-band frequencies, which can be within FR2 or can be within the EHF band.

[0036] The base station 102 (whether a small cell 102' or a large cell (e.g., a macro base station)) may include and / or may be referred to as an eNB, a gNodeB (gNB), or another type of base station. Some base stations, such as gNB 180, may operate in the traditional sub-6 GHz spectrum at millimeter wave frequencies and / or near millimeter wave frequencies to communicate with UE 104. When gNB 180 operates at millimeter wave or near millimeter wave frequencies, gNB 180 may be referred to as a millimeter wave base station. The millimeter wave base station 180 may utilize beamforming 182 with the UE 104 to compensate for this path loss and shorter communication distance. Both the base station 180 and the UE 104 may include multiple antennas (e.g., antenna elements, antenna panels, and / or antenna arrays) to facilitate beamforming.

[0037] The base station 180 may send beamformed signals in one or more transmit directions 182' to the UE 104. The UE 104 may receive beamformed signals from the base station 180 in one or more receive directions 182". The UE 104 may also send beamformed signals to the base station 180 in one or more transmit directions. The base station 180 may receive beamformed signals from the UE 104 in one or more receive directions. The base station 180 / UE 104 may perform beam training to determine the best receive and transmit directions for each of the base stations 180 / UE 104. The transmit and receive directions of the base station 180 may be the same or different. The transmit and receive directions of the UE 104 may be the same or different.

[0038] The EPC 160 may include a mobile management entity (MME) 162, other MMEs 164, a serving gateway 166, a multimedia broadcast multicast service (MBMS) gateway 168, a broadcast multicast service center (BM-SC) 170, and a packet data network (PDN) gateway 172. The MME 162 may communicate with a home subscriber server (HSS) 174. The MME 162 is a control node that handles signaling between the UE 104 and the EPC 160. Typically, the MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through the serving gateway 166, which itself is connected to the PDN gateway 172. The PDN gateway 172 provides UE IP address allocation and other functions. The PDN gateway 172 and the BM-SC 170 are connected to IP services 176. The IP services 176 may include the Internet, the intranet, the IP multimedia subsystem (IMS), and the PS streaming services and / or other IP services. The BM-SC 170 may provide functionality for MBMS user service provisioning and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS transmissions, may be used to authorize and initiate MBMS bearer services in a public land mobile network (PLMN), and may be used to schedule MBMS transmissions. The MBMS gateway 168 may be used to distribute MBMS services to base stations 102 belonging to a multicast broadcast single frequency network (MBSFN) area that broadcasts specific services, and may be responsible for session management (start / stop) and collecting eMBMS-related billing information.

[0039] The core network 190 may include an access and mobility management function (AMF) 192, other AMFs 193, a session management function (SMF) 194, and a user plane function (UPF) 195. The AMF 192 may communicate with a unified data management (UDM) 196. The AMF 192 is a control node that handles signaling between the UE 104 and the core network 190. Typically, the AMF 192 provides QoS flow and session management. All user Internet Protocol (IP) packets are transmitted through the UPF 195. The UPF 195 provides UE IP address allocation and other functions. The UPF 195 is connected to an IP service 197. The IP service 197 may include the Internet, an intranet, an IP multimedia subsystem (IMS), a packet switched (PS) stream (PSS) service, and / or other IP services.

[0040] A base station may include and / or be referred to as a gNB, a Node B, an eNB, an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmission reception point (TRP), or some other appropriate term. Base station 102 provides an access point for UE 104 to EPC 160 or core network 190. Examples of UE 104 include a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a tablet device, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a medical device, an implant, a sensor / actuator, a display, or any other similar functional device. Some of UE 104 may be referred to as IoT devices (e.g., a parking meter, a gas pump, a toaster, a vehicle, a heart monitor, etc.). UE 104 may also be referred to as a station, a mobile station, a user station, a mobile unit, a user unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile user station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.

[0041] Reference again Figure 1In certain aspects, the UE 104 may include a TCI state capability component 198 configured to determine UE capabilities associated with a joint DL and UL TCI state, the joint DL and UL TCI state indicating a common beam for communication in the DL and UL. The TCI state capability component 198 may be configured to send an indication of the UE capabilities associated with the joint DL and UL TCI state to the base station 102 or 180. In some examples, the TCI state capability component 198 may be configured to determine the UE capabilities associated with the UL TCI state, wherein the UL TCI state indicates a beam for communication in the UL; and send an indication of the UE capabilities associated with the UL TCI state to the base station. The base station 102 or 180 may include a TCI state configuration component 199 configured to receive an indication of the UE capabilities associated with the joint DL and UL TCI state from the UE, the joint DL and UL TCI state indicating a common beam for communication in the DL and UL. The device configures or activates one or more joint DL and UL TCI states for the UE based on the UE capabilities. In some examples, the TCI state configuration component 199 can be configured to receive an indication of UE capabilities associated with a UL TCI state from the UE, the UL TCI state indicating a common beam for UL communication. The device configures or activates one or more UL TCI states for the UE based on the UE capabilities. Although the following description may focus on 5G NR, the concepts described herein can be applicable to other similar fields, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0042] Figure 2A Figure 200 shows an example of the first subframe in the 5G NR frame structure. Figure 2B FIG230 is a diagram showing an example of DL channels in a 5G NR subframe. Figure 2C Figure 250 shows an example of a second subframe in a 5G NR frame structure. Figure 2D FIG280 is a diagram showing an example of UL channels in a 5G NR subframe. The 5G NR frame structure can be either frequency division duplex (FDD) or time division duplex (TDD), where in the case of FDD, for a particular set of subcarriers (carrier system bandwidth), the subframes within the set of subcarriers are dedicated to DL or UL, and in the case of TDD, for a particular set of subcarriers (carrier system bandwidth), the subframes within the set of subcarriers are dedicated to both DL and UL. Figure 2A , 2CIn the example provided, it is assumed that the 5G NR frame structure is TDD, where subframe 4 is configured with slot format 28 (primarily DL), where D is DL, U is UL, and F is used flexibly between DL / UL, and subframe 3 is configured with slot format 1 (all UL). Although subframes 3 and 4 are shown with slot formats 1 and 28, respectively, any particular subframe can be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are full DL and UL, respectively. Other slot formats 2-61 include a mix of DL, UL and flexible symbols. The slot format is configured for the UE through the received slot format indicator (SFI) (dynamically configured through DL control information (DCI), or semi-statically / statically configured through radio resource control (RRC) signaling). It should be noted that the following description also applies to the 5G NR frame structure of TDD.

[0043] Other wireless communication technologies may have different frame structures and / or different channels. A frame (10ms) may be divided into 10 subframes (1ms) of equal size. Each subframe may include one or more time slots. A subframe may also include a micro-time slot, which may include 7, 4, or 2 symbols. Depending on the time slot configuration, each time slot may include 7 or 14 symbols. For time slot configuration 0, each time slot may include 14 symbols, and for time slot configuration 1, each time slot may include 7 symbols. The symbol on the DL may be a cyclic prefix (CP) OFDM (CP-OFDM) symbol. The symbol on the UL may be a CP-OFDM symbol (for high throughput scenarios) or a discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbol (also known as a single carrier frequency division multiple access (SC-FDMA) symbol) (for power-limited scenarios; limited to single-stream transmission). The number of time slots within a subframe is based on the time slot configuration and parameter set. For slot configuration 0, different parameter sets μ0 to 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For slot configuration 1, different parameter sets 0 to 2 allow 2, 4, and 8 slots per subframe, respectively. Thus, for slot configuration 0 and parameter set μ, there are 14 symbols / slot and 2 μ timeslots / subframes. Subcarrier spacing and symbol length / duration depend on the parameter set. Subcarrier spacing can be equal to 2 μ *15kHz, where μ is parameter set 0 to 4. Thus, the subcarrier spacing is 15kHz for parameter set μ=0 and 240kHz for parameter set μ=4. The symbol length / duration is inversely proportional to the subcarrier spacing. Figures 2A-2DAn example is provided for slot configuration 0 with 14 symbols per slot and parameter set μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within a set of frames, there may be one or more different bandwidth parts (BWPs) that are frequency-division multiplexed (see Figure 2B ). Each BWP can have a specific set of parameters.

[0044] The frame structure is represented using a resource grid. Each slot includes a resource block (RB) (also called a physical RB (PRB)) extending over 12 consecutive subcarriers. The resource grid is divided into a number of resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0045] like Figure 2A As shown in , some of the REs carry reference (pilot) signals (RS) for the UE. The RS may include a demodulation RS (DM-RS) (indicated as R for a particular configuration, but other DM-RS configurations are also possible) and a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RS may also include a beam measurement RS (BRS), a beam refinement (BRRS), and a phase tracking RS (PT-RS).

[0046] Figure 2BExamples of various DL channels in a subframe of a frame are shown. The physical downlink control channel (PDCCH) carries DCI in one or more control channel elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE including six RE groups (REGs), each REG including 12 consecutive REs in an OFDM symbol of an RB. The PDCCH within a BWP may be referred to as a control resource set (CORESET). The UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., a common search space, a UE-specific search space) during a PDCCH monitoring opportunity on the CORESET, wherein the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at higher and / or lower frequencies on the channel bandwidth. The primary synchronization signal (PSS) may be within symbol 2 of a specific subframe of a frame. The UE 104 uses the PSS to determine subframe / symbol timing and physical layer identification. The secondary synchronization signal (SSS) may be located within symbol 4 of a specific subframe of a frame. The UE uses the SSS to determine the physical layer cell identification group number and radio frame timing. Based on the physical layer identifier and the physical layer cell identifier group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the location of the aforementioned DM-RS. The physical broadcast channel (PBCH) carrying the master information block (MIB) can be logically combined with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also called SS block (SSB)). The MIB provides the number of RBs in the system bandwidth and the system frame number (SFN). The physical downlink shared channel (PDSCH) carries user data, broadcast system information that is not sent through the PBCH (e.g., system information block (SIB)), and paging messages.

[0047] like Figure 2C As shown in , some of the REs carry DM-RS (indicated as R for a specific configuration, but other DMRS configurations are also possible) for channel estimation at the base station. The UE can send DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH). The PUSCH DM-RS can be sent in the first one or two symbols of the PUSCH. Depending on whether a short or long PUCCH is sent and depending on the specific PUCCH format used, the PUCCH DM-RS can be sent in different configurations. The UE can send a sounding reference signal (SRS). The SRS can be sent in the last symbol of the subframe. The SRS can have a comb structure, and the UE can send the SRS on one of these comb structures. The base station can use the SRS for channel quality estimation to achieve frequency-dependent scheduling on the UL.

[0048] Figure 2D Examples of various UL channels in a subframe of a frame are shown. The PUCCH may be located as indicated in one configuration. The PUCCH carries uplink control information (UCI) such as scheduling requests, channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), and hybrid automatic repeat request (HARQ) ACK / HARQ feedback. The PUSCH carries data and may also be used to carry buffer status reports (BSRs), power headroom reports (PHRs), and / or UCI.

[0049] Figure 3 3 is a block diagram of the communication between the base station 310 and the UE 350 in the access network. In the DL, the IP packets from the EPC 160 are provided to the controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functions. Layer 3 includes the radio resource control (RRC) layer, and layer 2 includes the service data adaptation protocol (SDAP) layer, the packet data convergence protocol (PDCP) layer, the radio link control (RLC) layer, and the medium access control (MAC) layer. The controller / processor 375 provides: RRC layer functions associated with broadcasting of system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), mobility between radio access technologies (RATs), and measurement configuration for UE measurement reporting; PDCP layer functions associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functions associated with transmission of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; MAC layer functions associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0050] The transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functions associated with various signal processing functions. Layer 1, including the physical (PHY) layer, may include error detection on the transmission channel, forward error correction (FEC) encoding / decoding of the transmission channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. The TX processor 316 processes the mapping for the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase phase shift keying (M-PSK), M-order quadrature amplitude modulation (M-QAM)). Subsequently, the coded and modulated symbols may be split into parallel streams. Subsequently, each stream may be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then combined using an inverse Fourier transform (IFFT) to generate a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially precoded to generate multiple spatial streams. Channel estimates from the channel estimator 374 can be used to determine the coding and modulation schemes and to implement spatial processing. The channel estimates can be derived from reference signals and / or channel condition feedback sent by the UE 350. Subsequently, each spatial stream can be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX can modulate an RF carrier using each spatial stream for transmission.

[0051] At the UE 350, each receiver 354RX receives a signal through its respective antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides the information to a receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functions associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, the RX processor 356 can combine them into a single OFDM symbol stream. Subsequently, the RX processor 356 uses a fast Fourier transform (FFT) to transform the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal includes a separate OFDMA symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier and the reference signal are recovered and demodulated by determining the most likely signal constellation point sent by the base station 310. These soft decisions can be based on the channel estimates calculated by the channel estimator 358. These soft decisions are then decoded and deinterleaved to recover the data and control signals originally sent on the physical channel by base station 310. These data and control signals are then provided to controller / processor 359, which implements layer 3 and layer 2 functions.

[0052] The controller / processor 359 may be associated with a memory 360 that stores program codes and data. The memory 360 may be referred to as a computer readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0053] Similar to the functions described in conjunction with the DL transmission of the base station 310, the controller / processor 359 provides: RRC layer functions associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functions associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functions associated with transmission of upper layer PDUs, error correction through ARQ, concatenation, segmentation and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; MAC layer functions associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority processing, and logical channel prioritization.

[0054] Channel estimates derived by the channel estimator 358 from a reference signal or feedback transmitted by the base station 310 may be used by the TX processor 368 to select appropriate coding and modulation schemes and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antennas 352 via respective transmitters 354TX. Each transmitter 354TX may modulate an RF carrier with a respective spatial stream for transmission.

[0055] The base station 310 processes UL transmissions in a manner similar to that described in conjunction with the receiver functionality at the UE 350. Each receiver 318RX receives signals through its respective antenna 320. Each receiver 318RX recovers information modulated onto an RF carrier and provides the information to a RX processor 370.

[0056] The controller / processor 375 may be associated with a memory 376 that stores program codes and data. The memory 376 may be referred to as a computer readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover IP packets from the UE 350. The IP packets from the controller / processor 375 may be provided to the EPC 160. The controller / processor 375 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0057] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to perform operations related to Figure 1 Aspects related to TCI state capability component 198.

[0058] At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to perform operations related to Figure 1 Aspects related to the TCI state configuration component 199.

[0059] There is a need for enhanced multi-beam operation, e.g., primarily for FR2, but also applicable to FR1. To enhance multi-beam operation, features may be identified and specified to facilitate more efficient (lower latency and overhead) DL / UL beam management to support higher intra-layer and layer 1 / layer 2 centric inter-cell mobility and / or a larger number of configured TCI states. Common beams for data and control transmission / reception for DL ​​and UL (particularly common beams for intra-band CA) may be specified to provide a unified TCI framework for DL ​​and UL beam indication. Enhancements to the signaling mechanisms for the above features may be provided to improve latency and efficiency through greater use of dynamic control signaling (compared to RRC). Additionally, features may be identified and specified to facilitate UL beam selection for UEs equipped with multiple panels based on UL beam indication and a unified TCI framework for UL fast panel selection, taking into account mitigation of UL coverage loss due to maximum permitted exposure (MPE).

[0060] Various aspects presented herein implement a unified TCI framework for DL ​​and UL beam indication. A unified TCI framework may be used to signal common beams for multiple DL and UL resources to save beam indication and overhead delays. Common beam indications may be signaled via a joint DL / UL TCI state. This document describes activating a joint DL / UL TCI state in the case of a single DCI scheduling DL / UL of multiple TRPs.

[0061] Figure 44 is a call flow diagram 400 illustrating a joint DL / UL TCI state for activating DL and / or UL communications between a UE 402 and a base station 404 .

[0062] In some examples, a UE may communicate with multiple TRPs (e.g., 406, 408, 410) in association with a single scheduling DCI 414 from one TRP 406 that schedules DL / UL of a UE 402 with multiple TRPs 406, 408, and 410 of a base station (BS) 404. Although TRP 406 is used as an example here, a MAC-CE 412 or DCI 414 may be sent from any other TRP (e.g., TRP 408 or 410) associated with BS 404. In some examples, a UE 402 may communicate with a base station 404 via multiple TRPs (e.g., 406, 408, 410) based on multiple DCIs (e.g., DCIs 414 and 415). In some examples, a UE may communicate with a base station via a single TRP 406.

[0063] At 407, the UE may determine UE capabilities related to the joint DL / UL TCI states for communicating with the base station 404, and may indicate the UE capabilities 409 to the base station 404. At 411, the base station 404 may use the UE capabilities 409 to configure one or more joint DL / UL TCI states for the UE 402. For example, the base station 404 may configure a set of joint DL / UL TCI states in RRC signaling for the UE 402. At 412, the base station 404 may activate one or more joint DL / UL TCI states for the UE. For example, the base station may send a MAC-CE or other downlink signal indicating one or more of the configured joint DL / UL TCI states activated for the UE. Each activated joint DL / UL TCI state indicates a common beam (receive (Rx) / transmit (Tx) beam) for communication in DL / UL. UE 402 receives one or more DCIs 414 and / or 415 from TRP 406, which schedules communication via DL / UL with at least one of TRPs 406, 408, and / or 410. UE 402 communicates 416 with at least one of TRPs 406, 408, and / or 410 via the scheduled DL / UL based on the activated joint DL / UL TCI state.

[0064] In some examples, UE 402 may indicate UE capabilities 409 for a single TRP (e.g., TRP 406). UE capabilities 409 may include any of the following: a maximum number of configured joint DL and UL TCI states per bandwidth part (BWP) per component carrier (CC), a maximum number of activated joint DL and UL TCI states per BWP per CC, a maximum number of configured joint DL and UL TCI states across all CCs, and / or a maximum number of activated joint DL and UL TCI states across all CCs. UE capabilities 409 may be used for data and control in the downlink and uplink. In some examples, base station 404 may configure one or more CC lists 407 for the UE. Base station 404 may configure CC list 407 in RRC signaling to UE 402. The UE 402 may indicate UE capabilities 409 for a maximum number of configured joint DL and UL TCI states across all CCs in the configured CC list and / or a maximum number of activated joint DL and UL TCI states across all CCs in the configured CC list.

[0065] In some examples, UE 402 may indicate UE capability 409 of multiple TRPs based on multiple DCIs (multi-DCIs), such as TRPs 406 and 407 transmitting DCIs 414 and 415, respectively. Such communication may be referred to as multi-TRP communication based on multiple DCIs, where the UE is scheduled by different DCIs to transmit or receive signals associated with different TRPs. The UE capabilities 409 may indicate any of the following: a maximum number of configured joint DL and UL TCI states in each control resource set (CORESET) pool index per bandwidth part (BWP) per component carrier (CC), a maximum number of activated joint DL and UL TCI states in each CORESET pool index per BWP per CC, a maximum number of configured joint DL and UL TCI states across all CORESET pool indexes per BWP per CC, a maximum number of activated joint DL and UL TCI states across all CORESET pool indexes per BWP per CC, a maximum number of configured joint DL and UL TCI states per CORESET pool index across all CCs, a maximum number of activated joint DL and UL TCI states in each CORESET pool index across all CCs, a maximum number of configured joint DL and UL TCI states across all CORESET pool indexes across all CCs, a maximum number of activated joint DL and UL TCI states across all CORESET pool indexes across all CCs, a default DL and UL TCI state for each CORESET pool index per BWP per CC. The UE capabilities 409 may be used for data and control in the downlink and uplink. In some examples, the base station 404 may configure one or more CC lists 407 for the UE. The UE capabilities 409 may be indicated for CCs in the CC list 407. For example, the UE may indicate the following capabilities: a maximum number of configured joint DL and UL TCI states for each CORESET pool index across all CCs in the CC list, a maximum number of activated joint DL and UL TCI states for each CORESET pool index across all CCs in the CC list, a maximum number of configured joint DL and UL TCI states for all CORESET pool indexes across all CCs in the CC list, a maximum number of activated joint DL and UL TCI states for all CORESET pool indexes across all CCs in the CC list, and / or support of default DL and UL TCI states for each CORESET pool index across all CCs in the CC list.

[0066] In some examples, UE 402 may indicate UE capabilities 409 for multiple TRPs (e.g., TRPs 406, 408, and / or 410) based on a single DCI 414. Such communication may be referred to as multi-TRP communication based on a single DCI, where a UE is scheduled to send or receive signals associated with different TRPs by a single DCI. UE 402 may indicate UE capabilities 409 for any of the following: a maximum number of configured joint DL and UL TCI states for TCI code points mapped to a resource allocation scheme across multiple TRPs scheduled by a scheduling DCI, support for a default TCI code point for multiple joint DL and UL TCI states mapped to each BWP of each CC, and / or support for a default TCI code point for multiple joint DL and UL TCI states mapped to all CCs. The UE may indicate the maximum number of joint DL / UL TCI states mapped to one TCI code point for different schemes of resource allocation across multiple TRPs scheduled by a scheduling DCI. Different schemes may include any of frequency division multiplexing (FDM), space division multiplexing (SDM), or time division multiplexing (TDM). For example, the maximum number may be indicated for a mini-slot-based TDM scheme or a slot-based TDM scheme. In some examples, the base station 404 may configure one or more CC lists 407 for the UE. UE capabilities 409 may be indicated for CCs in the CC list 407. For example, the UE 402 may indicate a UE capability 409 for a default TCI code point for supporting multiple joint DL and UL TCI states mapped to all CCs in the configured CC list. The default TCI code point may be applied to a scheduled transmission or reception associated with a TRP, where the TCI associated with the scheduled transmission or reception is not explicitly indicated, and the TCI mapped to the default TCI code point is applied to the corresponding scheduled transmission or reception.

[0067] In some examples, UE 402 may indicate UE capability 409 for simultaneous joint DL / UL TCI state activation across CCs. UE 402 may support activation of joint DL / UL TCI states across multiple CCs. For example, if base station 404 activates a joint DL / UL TCI state for CCs in one of configured CC lists 407, UE 402 may support applying the joint DL / UL TCI state to each CC in the configured list.

[0068] The UE 402 may indicate the UE capability 409 of inter-cell mobility based on layer 1 (L1) or layer 2 (L2) based on the joint DL and UL TCI state. For example, for the joint DL and UL TCI state, the UE may support reference signals or channels of non-serving cells. The reference signals or channels of non-serving cells may provide various DL quasi-co-location (QCL) assumptions or uplink spatial relationship information for the joint DL and UL TCI state.

[0069] The UE 402 may indicate, via at least one of MAC-CE or DCI, UE capability 409 for updating the joint DL and UL TCI state. The update may correspond to activation / deactivation of the joint DL and UL TCI state in a MAC-CE message or DCI. The UE may indicate support for joint DL / UL TCI state update based on DCI. The UE 402 may indicate support for joint DL / UL TCI state update based on MAC-CE.

[0070] The UE 402 may indicate UE capabilities 409 for a subset of one or more channels and / or a subset of one or more reference signals, both of which may be updated with a joint DL / UL TCI state. For example, the UE may indicate UE capabilities 409 for one or more of the following: PDCCH, PDSCH scheduled by DCI, semi-persistent scheduling (SPS) transmission, periodic channel state information reference signal (CSI-RS), semi-persistent CSI-RS, aperiodic CSI-RS, positioning reference signal, periodic PUCCH, semi-persistent PUCCH, aperiodic PUCCH, PUSCH, sounding reference signal (SRS), or physical random access channel (PRACH).

[0071] In some examples, the SRS may be a source RS in a downlink-only TCI state or a joint DL / UL TCI state to indicate a UE spatial receive (Rx) filter. The UE spatial receive (Rx) filter may indicate a QCL type D assumption, for example, based on the UE capability 409. The SRS used as a source RS may be an SRS for different information purposes, for example, including an SRS configured for any of the following: beam management (BM), codebook (CB) based communication (e.g., CB-based uplink MIMO transmission), non-codebook (NCB) based communication (e.g., NCB uplink MIMO transmission), and / or antenna switching (e.g., for downlink CSI acquisition). In some examples, based on the TCI state (e.g., joint DL / UL TCI state) in which the SRS is a QCL type D reference signal, other source reference signals may not be included to provide other QCL assumptions (e.g., QCL type A, QCL type B, or QCL type C assumptions). In some examples, a TCI state based on SRS as a QCL type D reference signal (e.g., a joint DL / UL TCI state) can indicate one or more other reference signals to provide other QCL assumptions (e.g., QCL type A, QCL type B, or QCL type C assumptions) for DL / UL communications based on the TCI state.

[0072] At 411, the base station 404 can configure one or more joint DL / UL TCI states for the UE 402 based on the UE capability 409 information provided by the UE. The base station 404 can activate at least one joint DL / UL TCI state for the UE 402 based on the UE capability 409 information received from the UE 402. In some examples, the TCI state can be associated with a reference signal 413 from the base station 404. The base station 404 can schedule downlink and / or uplink communications with the UE 402, for example, using the DCI 414 and / or 415. The UE 402 and the base station 404 can exchange downlink and / or uplink communications 416 based on the active DL and UL TCI states and the resources scheduled by the DCI 414 and / or 415.

[0073] Figure 5 An example communication flow between a UE 502 and a base station 504 is shown, including an indication of UE capabilities 509 associated with a UL TCI state. Figure 4 , the UE can communicate with a single TRP or with multiple TRPs (e.g., 406, 408, 410). Multi-TRP communication can be based on a single DCI 514 or multiple DCIs 514 and 515.

[0074] At 507, the UE may determine UE capabilities related to UL TCI states for communication with the base station 504, and may indicate the UE capabilities 509 to the base station 504. At 511, the base station 504 may use the UE capabilities 509 to configure one or more UL TCI states for the UE 502. For example, the base station 504 may configure a set of UL TCI states in RRC signaling for the UE 502 based on the UE capabilities 509. At 512, the base station 504 may activate one or more UL TCI states for the UE based on the UE capabilities 509. For example, the base station may send a MAC-CE or other downlink signal indicating one or more configured UL TCI states activated for the UE. Each activated UL TCI state indicates a beam (transmit (Tx) beam) for uplink communication. The UE 502 receives one or more DCIs 514 and / or 515 from the TRP 506, which schedule resources for uplink communication with at least one of the TRPs 506, 508, and / or 510. The UE 502 sends an uplink communication 516 with at least one of the TRPs 506, 508 and / or 510 on the scheduled UL resources based on the activated UL TCI state.

[0075] In some examples, the UE 502 may indicate UE capabilities 509 for a single TRP (e.g., TRP 506). The UE capabilities 509 may include any of the following: a maximum number of configured UL TCI states per bandwidth part (BWP) per component carrier (CC), a maximum number of activated UL TCI states per BWP per CC, a maximum number of configured UL TCI states across all CCs, and / or a maximum number of activated UL TCI states across all CCs. The UE capabilities 509 may be used for data and control in the downlink and uplink. In some examples, the base station 504 may configure one or more CC lists 507 for the UE. The base station 504 may configure the CC list 507 in RRC signaling to the UE 502. The UE 502 may indicate the UE capabilities 509 for the maximum number of configured UL TCI states across all CCs in the configured CC list, and / or the maximum number of activated UL TCI states across all CCs in the configured CC list.

[0076] In some examples, UE 502 may indicate UE capability 509 of multiple TRPs based on multiple DCIs (multi-DCIs), such as TRPs 506 and 506 that transmit DCIs 514 and 515, respectively. Such communication may be referred to as multi-TRP communication based on multiple DCIs. The UE capabilities 509 may indicate any of the following: a maximum number of configured UL TCI states in each control resource set (CORESET) pool index per bandwidth part (BWP) per component carrier (CC), a maximum number of activated UL TCI states in each CORESET pool index per BWP per CC, a maximum number of configured UL TCI states across all CORESET pool indexes per BWP per CC, a maximum number of activated UL TCI states across all CORESET pool indexes per BWP per CC, a maximum number of configured UL TCI states in each CORESET pool index across all CCs, a maximum number of activated UL TCI states in each CORESET pool index across all CCs, a maximum number of configured UL TCI states in all CORESET pool indexes across all CCs, a maximum number of activated UL TCI states in all CORESET pool indexes across all CCs, support of a default UL TCI state for each CORESET pool index per CC, and / or support of a default UL TCI state for each CORESET pool index across all CCs. UE capabilities 509 may be used for data and control in the downlink and uplink. In some examples, the base station 504 may configure one or more CC lists 507 for the UE. The UE capabilities 509 may be indicated for CCs in the CC list 507. For example, the UE may indicate the following capabilities: a maximum number of configured UL TCI states per CORESET pool index across all CCs in the CC list, a maximum number of activated UL TCIs per CORESET pool index across all CCs in the CC list, a maximum number of configured UL TCI states across all CORESET pool indexes across all CCs in the CC list, a maximum number of activated UL TCI states across all CORESET pool indexes across all CCs in the CC list, and / or support of a default UL TCI state per CORESET pool index across all CCs in the CC list. A default TCI code point is applied to scheduled transmissions associated with a TRP, where the TCI associated with the scheduled transmission is not explicitly indicated, and the TCI mapped to the default TCI code point is applied to the corresponding scheduled transmission.

[0077] In some examples, the UE 502 may indicate UE capabilities 509 for multiple TRPs (e.g., TRPs 506, 508, and / or 510) based on a single DCI 514. Such communication may be referred to as multi-TRP communication based on a single DCI. The UE 502 may indicate UE capabilities 509 for any of the following: the maximum number of configured UL TCI states for TCI code points mapped to a resource allocation scheme on multiple TRPs scheduled by the scheduling DCI, support for default TCI code points for multiple UL TCI states mapped to each BWP of each CC, and / or support for default TCI code points for multiple UL TCI states mapped to all CCs. The UE may indicate the maximum number of UL TCI states mapped to one TCI code point for different schemes of resource allocation across multiple TRPs scheduled by the scheduling DCI. Different schemes may include any one of FDM, SDM, or TDM. For example, the maximum number may be indicated for a TDM scheme based on mini-slots or a TDM scheme based on time slots. In some examples, the base station 404 may configure one or more CC lists 507 for the UE. The UE capabilities 509 may be indicated for the CCs in the CC list 507. For example, the UE 502 may indicate the UE capabilities 509 to support default TCI code points that map to multiple UL TCI states on all CCs in the configured CC list.

[0078] In some examples, the UE 502 may indicate a UE capability 509 to activate UL TCI states simultaneously across CCs. The UE 502 may support activating UL TCI states on multiple CCs. For example, if the base station 504 activates the UL TCI state of a CC in one of the configured CCL lists 507, the UE 502 may support applying the state of the UL TCI to each CC in the configured list.

[0079] The UE 502 may indicate the UE capability 509 of inter-cell mobility based on L1 or L2 based on the UL TCI state. For example, the UE may support a reference signal or channel of a non-serving cell for the UL TCI state. The reference signal or channel of the non-serving cell may provide various DL QCL assumptions or uplink spatial relationship information for the UL TCI state.

[0080] The UE 502 may indicate the UE capability 509 for updating the UL TCI state through at least one of MAC-CE or DCI. The update may correspond to activation / deactivation of the UL TCI state in the MAC-CE message or DCI. The UE may indicate support for DCI-based UL TCI state update. The UE 502 may indicate support for MAC-CE-based UL TCI state update.

[0081] The UE 502 may indicate UE capabilities 509 for a subset of one or more channels and / or a subset of one or more reference signals. For example, the UE may indicate UE capabilities 509 for one or more of: periodic PUCCH, semi-persistent PUCCH, aperiodic PUCC, PUSCH, SRS, or PRACH.

[0082] Figure 6 600 is a flow chart of a method of wireless communication. The method may be performed by a UE (e.g., UE 104, 350, 402, 502; apparatus 802). Dashed lines are used to indicate optional aspects. The method may enable the UE to provide information to the network to assist the network in configuring and / or activating a joint DL and UL TCI state of the UE.

[0083] At 604, the UE determines UE capabilities associated with a joint DL and UL TCI state indicating a common beam for communications in DL and UL. The determination of UE capabilities may be performed, for example, by a determining component 840 of the communications manager 832 of the apparatus 802.

[0084] At 606, the UE sends an indication of UE capabilities associated with the joint DL and UL TCI state to the base station. Figure 4 An example is shown of UE 402 sending UE capabilities 409 to base station 404. Transmission of the indication of UE capabilities may be performed, for example, by TCI state capabilities component 842 of communication manager 832 of apparatus 802.

[0085] The UE capability may be for a single TRP and may include at least one of: a first maximum number of configured joint DL and UL TCI states per BWP per CC, a second maximum number of activated joint DL and UL TCI states per BWP per CC, a third maximum number of configured joint DL and UL TCI states across all CCs, or a fourth maximum number of activated joint DL and UL TCI states across all CCs. The UE capability may be for data and control.

[0086] As shown at 602, the UE may receive a configuration of one or more CC lists, and at 606, the UE may report the following UE capabilities: a third maximum number of configured joint DL and UL TCI states across all CCs in the one or more CC lists, or a fourth maximum number of activated joint DL and UL TCI states across all CCs in the one or more CC lists. Receiving the configuration of the CC lists may be performed, for example, by the CC component 844 of the communication manager 832 of the apparatus 802.

[0087] The UE capability may be used for multiple TRPs based on multiple downlink control information (multi-DCI) and may include at least one of the following: a first maximum number of configured joint DL and UL TCI states per CORESET pool index per BWP per CC, a second maximum number of activated joint DL and UL TCI states per CORESET pool index per BWP per CC, a third maximum number of configured joint DL and UL TCI states across all CORESET pool indexes per BWP per CC, a fourth maximum number of activated joint DL and UL TCI states across all CORESET pool indexes per BWP per CC, a fifth maximum number of configured joint DL and UL TCI states per CORESET pool index across all CCs, a sixth maximum number of activated joint DL and UL TCI states per CORESET pool index across all CCs, a seventh maximum number of configured joint DL and UL TCI states across all CORESET pool indexes across all CCs, a seventh maximum number of activated joint DL and UL TCI states across all CORESET pool indexes across all CCs, An eighth maximum number of TCI states, first support for default DL and UL TCI states per CORESET pool index per BWP per CC, or second support for default DL and UL TCI states per CORESET pool index across all CCs. This UE capability may be used for data and control.

[0088] As shown at 602, the UE may receive a configuration of one or more CC lists, and the UE reports a UE capability of at least one of: a fifth maximum number of configured joint DL and UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, a sixth maximum number of activated joint DL and UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, a seventh maximum number of configured joint DL and UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, an eighth maximum number of activated joint DL and UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, or a second support for default DL and UL TCI states for each CORESET pool index across all CCs.

[0089] The UE capability may be used for multiple TRPs based on a single DCI and may include at least one of the following: a maximum number of configured joint DL and UL TCI states of TCI code points mapped to a resource allocation scheme on multiple TRPs scheduled by a scheduled DCI, a first support for default TCI code points for multiple joint DL and UL TCI states mapped to each BWP of each CC, or a second support for default TCI code points for multiple joint DL and UL TCI states mapped to all CCs. For example, the resource allocation scheme may be based on FDM, SDM, or TDM.

[0090] As indicated at 602, the UE may receive configuration of one or more CC lists, and the UE may report the UE capability of second support for default TCI code points mapped to multiple joint DL and UL TCI states across all CCs in the one or more CC lists.

[0091] The UE capability may be used to activate joint DL and UL TCI state across multiple CCs.As shown at 602, the UE may receive configuration of one or more CC lists, and at 606, the UE may report UE capabilities for activating joint DL and UL TCI state on multiple CCs in the one or more CC lists.

[0092] UE capabilities may include L1 or L2 based inter-cell mobility based on joint DL and UL TCI state. UE capabilities may include: support for reference signals or channels of non-serving cells for joint DL and UL TCI state. Reference signals or channels of non-serving cells may provide one or more of DL quasi-co-location assumption or uplink spatial relationship information for joint DL and UL TCI state.

[0093] The UE capability may be used to update the joint DL and UL TCI status via at least one of MAC-CE or DCI. The UE capability may be used for one or more of the following: PDCCH, PDSCH scheduled by DCI, SPS transmission, PRS, periodic CSI-RS, aperiodic CSI-RS, semi-persistent CSI-RS, periodic PUCCH, aperiodic PUCCH and / or PRACH.

[0094] The UE capabilities may be associated with the SRS as a source reference signal. The SRS may be a source reference signal for downlink communications (e.g., downlink only). The joint DL and UL TCI state may indicate a UE spatial receive filter associated with the SRS and based on the UE capabilities. The SRS may be used for one or more of: beam management, codebook-based communication, non-codebook-based communication, or antenna switching. The joint DL and UL TCI state may indicate the SRS as a QCL type D reference signal. The joint DL and UL TCI state may also include: at least one additional reference signal for different QCL assumptions.

[0095] At 608, the UE may receive configuration, activation, and / or deactivation of one or more joint DL and UL TCI states based on UE capabilities. Figure 4 An example is shown in which a UE 402 is configured with a set of joint DL and UL TCI states based on UE capabilities, and the UE is shown receiving activation for a joint DL and UL TCI state based on the UE capabilities. The receiving of the joint DL and UL TCI state configuration may be performed, for example, by a TCI state configuration component 846 of a communication manager 832 in the apparatus 802. The activation / deactivation of the joint DL and UL TCI state may be performed, for example, by a TCI state activation component 848 of a communication manager 832 in the apparatus 802 in response to an indication from a base station 102 or 180 to activate / deactivate the joint DL and UL TCI state.

[0096] Figure 7 700 is a flow chart of a wireless communication method. The method may be performed by a UE (e.g., UE 104, 350, 402, 502; device 802). Dashed lines are used to indicate optional aspects. The method may enable the UE to provide information to the network to assist the network in configuring and / or activating the UL TCI state of the UE.

[0097] At 704, the UE determines UE capabilities associated with a UL TCI state indicating a beam to use for uplink communications. The determination of UE capabilities may be performed, for example, by a determining component 840 of the communication manager 832 of the apparatus 802.

[0098] At 706, the UE sends an indication of UE capabilities associated with the UL TCI state to the base station. For example, Figure 5 An example is shown of UE 502 sending UE capabilities 509 to base station 504. Transmission of the indication of UE capabilities may be performed, for example, by TCI state capabilities component 842 of communication manager 832 of apparatus 802.

[0099] The UE capability may be for a single TRP and may include at least one of the following: a first maximum number of configured UL TCI states per BWP per CC, a second maximum number of activated UL TCI states per BWP per CC, a third maximum number of configured UL TCI states across all CCs, or a fourth maximum number of activated UL TCI states across all CCs. The UE capability may be for data and control.

[0100] As shown at 702, the UE may receive a configuration of one or more CC lists, and at 706, the UE may report the following UE capabilities: a third maximum number of configured UL TCI states across all CCs in the one or more CC lists, or a fourth maximum number of activated UL TCI states across all CCs in the one or more CC lists. Receiving the configuration of the CC lists may be performed, for example, by the CC component 844 of the communication manager 832 of the apparatus 802.

[0101] The UE capability may be used for multiple TRPs based on multiple downlink control information (multi-DCI) and may include at least one of: a first maximum number of configured UL TCI states per CORESET pool index per BWP per CC, a second maximum number of activated UL TCI states per CORESET pool index per BWP per CC, a third maximum number of configured UL TCI states across all CORESET pool indexes per BWP per CC, a fourth maximum number of activated UL TCI states across all CORESET pool indexes per BWP per CC, a fifth maximum number of configured UL TCI states per CORESET pool index across all CCs, a sixth maximum number of activated UL TCI states per CORESET pool index across all CCs, a seventh maximum number of configured UL TCI states across all CORESET pool indexes across all CCs, an eighth maximum number of activated UL TCI states across all CORESET pool indexes across all CCs, a first support for default UL TCI states per CORESET pool index per BWP per CC, or a first support for default UL TCI states per CORESET pool index per BWP per CC. Second support of TCI state. This UE capability can be used for data and control.

[0102] As shown at 702, the UE may receive a configuration of one or more CC lists, and at 706, the UE may report a UE capability of at least one of: a fifth maximum number of configured UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, a sixth maximum number of activated UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, a seventh maximum number of configured UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, an eighth maximum number of activated UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, or a second support for a default UL TCI state for each CORESET pool index across all CCs.

[0103] The UE capability may be used for multiple TRPs based on a single DCI and may include at least one of the following: a maximum number of configured UL TCI states mapped to TCI code points for a resource allocation scheme on multiple TRPs scheduled by a scheduled DCI, first support for default TCI code points for multiple UL TCI states mapped to each BWP of each CC, or second support for default TCI code points for multiple UL TCI states mapped across all CCs. For example, the resource allocation scheme may be based on FDM, SDM, or TDM.

[0104] As shown at 702, the UE may receive configuration of one or more CC lists, and the UE may report a second supported UE capability for default TCI code points mapped to multiple UL TCI states across all CCs in the one or more CC lists.

[0105] The UE capability may be used to activate UL TCI states across multiple CCs.As shown at 702, the UE may receive configuration of one or more CC lists, and at 706, the UE may report UE capabilities for activating UL TCI states on multiple CCs in the one or more CC lists.

[0106] UE capabilities may include L1 or L2 based inter-cell mobility based on UL TCI state. UE capabilities may include: support for reference signals or channels for non-serving cells for UL TCI state. Reference signals or channels for non-serving cells may provide one or more of DL quasi-co-location assumption or uplink spatial relationship information for UL TCI state.

[0107] The UE capability may be used to update the UL TCI state via at least one of MAC-CE or DCI. The UE capability may be used for one or more of: periodic PUCCH, aperiodic PUCCH, semi-persistent PUCCH, PUSCH, SRS and / or PRACH.

[0108] At 708, the UE may receive configuration, activation, and / or deactivation of one or more UL TCI states based on UE capabilities. For example, Figure 5 An example is shown in which the UE 502 is configured with a set of UL TCI states based on UE capabilities, and the UE is shown receiving activation for UL TCI states based on UE capabilities. The receiving of the UL TCI state configuration can be performed, for example, by a TCI state configuration component 846 of a communication manager 832 in the device 802. The activation / deactivation of the UL TCI state can be performed, for example, by a TCI state activation component 848 of a communication manager 832 in the device 802 in response to an indication from a base station 102 or 180 to activate / deactivate the UL TCI state.

[0109] Figure 8800 is a diagram showing an example of a hardware implementation for an apparatus 802. The apparatus 802 is a UE and includes a cellular baseband processor 804 (also referred to as a modem) coupled to a cellular RF transceiver 822, and one or more subscriber identity modules (SIM) cards 820, an application processor 806 coupled to a secure digital (SD) card 808 and a screen 810, a Bluetooth module 812, a wireless local area network (WLAN) module 814, a global positioning system (GPS) module 816, and a power supply 818. The cellular baseband processor 804 communicates with the UE 104 and / or the BS 102 / 180 via the cellular RF transceiver 822. The cellular baseband processor 804 may include a computer-readable medium / memory. The computer-readable medium / memory may be non-temporary. The cellular baseband processor 804 is responsible for general processing, which includes executing software stored on a computer-readable medium / memory. When the software is executed by the cellular baseband processor 804, the cellular baseband processor 804 is caused to perform the various functions described above. The computer-readable medium / memory may also be used to store data that the cellular baseband processor 804 manipulates when executing software. The cellular baseband processor 804 also includes a receiving component 830, a communication manager 832, and a transmission component 834. The communication manager 832 includes one or more of the components shown. The components within the communication manager 832 may be stored in a computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 804. The cellular baseband processor 804 may be a component of the UE 350 and may include a memory 360 and / or at least one of a TX processor 368, an RX processor 356, and a controller / processor 359. In one configuration, the device 802 may be a modem chip and include only the baseband processor 804, and in another configuration, the device 802 may be the entire UE (e.g., see Figure 3 350) and includes other modules of device 802.

[0110] The communication manager 832 includes a determining component 840 configured to determine UE capabilities associated with a joint DL and UL TCI state, e.g., as described in conjunction with 604, and / or to determine UE capabilities associated with a UL TCI state, e.g., as described in conjunction with 704. The communication manager 832 also includes a TCI state capabilities component 842 configured to send the UE capabilities to the base station 102 or 180, e.g., as described in conjunction with 606 and / or 706. The communication manager 832 also includes a CC component 844 configured to receive a configuration of one or more CC lists from the base station 102 or 180, e.g., as described in conjunction with 602 and / or 702. The communication manager 832 also includes a TCI state configuration component 846 configured to receive a configuration of one or more of a joint DL and UL TCI state and / or one or more UL TCI states, e.g., as described in conjunction with 608 or 708. The communications manager 832 also includes a TCI state activation component 848 configured to receive activation for one or more of a joint DL and UL TCI state and / or one or more UL TCI states, eg, as described in connection with 608 or 708 .

[0111] The apparatus may include means for performing Figure 6 and / or Figure 7 Each box in the algorithm in the above flowchart and / or by Figure 4 and / or Figure 5 402 or 502 in the UE 402 or 502. Figure 6 and / or Figure 7 Each of the blocks in the foregoing flowchart and / or by Figure 4 and / or Figure 5 The various aspects performed by the UE 402 or 502 in the embodiment may be performed by components, and the apparatus may include one or more of these components. These components may be one or more hardware components specifically configured to perform the stated processing / algorithms, these components may be implemented by a processor configured to perform the stated processing / algorithms, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0112] In one configuration, the apparatus 802 (specifically, the cellular baseband unit 804) may include: a unit for determining UE capabilities associated with a joint DL and UL TCI state, wherein the joint DL and UL TCI state indicates a common beam for communication in the DL and UL; a unit for sending an indication of the UE capabilities associated with the joint DL and UL TCI state to a base station. The apparatus 802 may also include: a unit for receiving a configuration of one or more CC lists. The apparatus 802 may also include: a unit for receiving a configuration of one or more joint DL and UL TCI states, and / or a unit for activating at least one joint DL and UL TCI state based on UE capabilities. The apparatus 802 may include: a unit for determining UE capabilities associated with a UL TCI state, wherein the UL TCI state indicates a common beam for communication in the UL; a unit for sending an indication of the UE capabilities associated with the UL TCI state to a base station. The apparatus 802 may also include: a unit for receiving a configuration of one or more CC lists. The apparatus 802 may also include: a unit for receiving a configuration of one or more UL TCI states, and / or a unit for activating at least one UL TCI state based on UE capabilities. These aforementioned units may be one or more of the aforementioned components of the apparatus 802 configured to perform the functions described by these aforementioned units. As described above, the apparatus 802 may include a TX processor 368, an RX processor 356, and a controller / processor 359. Therefore, in one configuration, these aforementioned units may be a TX processor 368, an RX processor 356, and a controller / processor 359 configured to perform the functions stated by these aforementioned units.

[0113] Fig. 9 900 is a flow chart of a method of wireless communication. The method may be performed by a base station (e.g., base station 102, 180, 310, 404, or 504; apparatus 1102). Optional aspects are shown using dashed lines. The method may enable configuration and / or activation of a joint DL and UL TCI state for a UE based on UE capabilities indicated to the base station.

[0114] At 904, the base station receives from the UE an indication of UE capabilities associated with a joint DL and UL TCI state indicating a common beam for communication in DL and UL. The receiving of the indication of UE capabilities may be performed, for example, by a TCI state capabilities component 1142 of the communication manager 1132 of the device 1102. Figure 4 An example is shown where the base station 404 receives UE capabilities 409 for joint DL and UL TCI states.

[0115] At 906, the base station configures or activates one or more joint DL and UL TCI states for the UE based on the UE capabilities. The configuration of the joint DL and UL TCI states may be performed, for example, by a TCI state configuration component 1146 of the communication manager 1132 in the apparatus 1102. The activation / deactivation of the joint DL and UL TCI states may be performed, for example, by a TCI state activation component 1148 of the communication manager 1132 in the apparatus 1102. Figure 4 An example is shown in which the base station 404 configures and activates one or more joint DL and UL TCI states based on UE capabilities.

[0116] The UE capability may be for a single TRP and may include at least one of: a first maximum number of configured joint DL and UL TCI states per BWP per CC, a second maximum number of activated joint DL and UL TCI states per BWP per CC, a third maximum number of configured joint DL and UL TCI states across all CCs, or a fourth maximum number of activated joint DL and UL TCI states across all CCs. The UE capability may be for data and control.

[0117] As shown at 902, the base station may configure one or more CC lists, and the UE capabilities received at 904 may be for: a third maximum number of configured joint DL and UL TCI states across all CCs in the one or more CC lists, or a fourth maximum number of activated joint DL and UL TCI states across all CCs in the one or more CC lists. The configuration of the CC lists may be performed, for example, by the CC component 1144 of the communication manager 1132 of the device 1102.

[0118] The UE capability may be used for multiple TRPs based on multiple downlink control information (multi-DCI) and may include at least one of the following: a first maximum number of configured joint DL and UL TCI states per CORESET pool index per BWP per CC, a second maximum number of activated joint DL and UL TCI states per CORESET pool index per BWP per CC, a third maximum number of configured joint DL and UL TCI states across all CORESET pool indexes per BWP per CC, a fourth maximum number of activated joint DL and UL TCI states across all CORESET pool indexes per BWP per CC, a fifth maximum number of configured joint DL and UL TCI states per CORESET pool index across all CCs, a sixth maximum number of activated joint DL and UL TCI states per CORESET pool index across all CCs, a seventh maximum number of configured joint DL and UL TCI states across all CORESET pool indexes across all CCs, a seventh maximum number of activated joint DL and UL TCI states across all CORESET pool indexes across all CCs, An eighth maximum number of TCI states, a first support for default DL and UL TCI states per CORESET pool index per BWP per CC, or a second support for default DL and UL TCI states per CORESET pool index across all CCs. This UE capability may be used for data and control.

[0119] As shown at 902, the base station may configure one or more CC lists, and the UE capabilities received at 904 are for at least one of: a fifth maximum number of configured joint DL and UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, a sixth maximum number of activated joint DL and UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, a seventh maximum number of configured joint DL and UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, an eighth maximum number of activated joint DL and UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, or a second support for default DL and UL TCI states for each CORESET pool index across all CCs.

[0120] The UE capability may be used for multiple TRPs based on a single DCI and may include at least one of the following: a maximum number of configured joint DL and UL TCI states of TCI code points mapped to a resource allocation scheme on multiple TRPs scheduled by a scheduled DCI, a first support for default TCI code points for multiple joint DL and UL TCI states mapped to each BWP of each CC, or a second support for default TCI code points for multiple joint DL and UL TCI states mapped to all CCs. For example, the resource allocation scheme may be based on FDM, SDM, or TDM.

[0121] As shown at 902, the base station may configure one or more CC lists, and the UE capabilities received at 904 may be for second support for a default TCI code point mapped to multiple joint DL and UL TCI states across all CCs in the one or more CC lists.

[0122] The UE capabilities may be used to activate joint DL and UL TCI states across multiple CCs.As shown at 902, a base station may configure one or more CC lists, and the UE capabilities received at 904 may be used to activate joint DL and UL TCI states on multiple CCs in the one or more CC lists.

[0123] UE capabilities may include L1 or L2 based inter-cell mobility based on joint DL and UL TCI state. UE capabilities may include: support for reference signals or channels of non-serving cells for joint DL and UL TCI state. Reference signals or channels of non-serving cells may provide one or more of DL quasi-co-location assumption or uplink spatial relationship information for joint DL and UL TCI state.

[0124] The UE capability may be used to update the joint DL and UL TCI state via at least one of MAC-CE or DCI. The UE capability may be used for one or more of the following: PDCCH, PDSCH scheduled by DCI, SPS transmission, PRS, periodic CSI-RS, aperiodic CSI-RS, semi-persistent CSI-RS, periodic PUCCH, aperiodic PUCCH, semi-persistent PUCCH, PUSCH, SRS and / or PRACH.

[0125] The UE capabilities may be associated with the SRS as a source reference signal. The SRS may be a source reference signal for downlink communications (e.g., downlink only). The joint DL and UL TCI state may indicate a UE spatial receive filter associated with the SRS and based on the UE capabilities. The SRS may be used for one or more of: beam management, codebook-based communication, non-codebook-based communication, or antenna switching. The joint DL and UL TCI state may indicate the SRS as a QCL type D reference signal. The joint DL and UL TCI state may also include: at least one additional reference signal for different QCL assumptions.

[0126] Fig.10 1000 is a flow chart of a method of wireless communication. The method may be performed by a base station (e.g., base station 102, 180, 310, 404, or 504; apparatus 1102). Optional aspects are shown using dashed lines. The method may enable configuration and / or activation of a joint DL and UL TCI state for a UE based on UE capabilities indicated to the base station.

[0127] At 1004, the base station receives from the UE an indication of UE capabilities associated with a UL TCI state indicating a common beam for UL communications. The receiving of the indication of UE capabilities may be performed, for example, by a TCI state capabilities component 1142 of the communications manager 1132 of the apparatus 1102. Figure 4 An example is shown where the base station 404 receives UE capabilities 409 for a UL TCI state.

[0128] At 1006, the base station configures or activates one or more UL TCI states for the UE based on the UE capabilities. The configuration of the UL TCI states may be performed, for example, by a TCI state configuration component 1146 of the communication manager 1132 in the device 1102. The activation / deactivation of the UL TCI states may be performed, for example, by a TCI state activation component 1148 of the communication manager 1132 in the device 1102. Figure 4 An example is shown in which the base station 404 configures and activates one or more UL TCI states based on UE capabilities.

[0129] The UE capability may be for a single TRP and may include at least one of the following: a first maximum number of configured UL TCI states per BWP per CC, a second maximum number of activated UL TCI states per BWP per CC, a third maximum number of configured UL TCI states across all CCs, or a fourth maximum number of activated UL TCI states across all CCs. The UE capability may be for data and control.

[0130] As shown at 1002, the base station may configure one or more CC lists, and the UE capabilities received at 1004 may be for: a third maximum number of configured UL TCI states across all CCs in the one or more CC lists, or a fourth maximum number of activated UL TCI states across all CCs in the one or more CC lists. The configuration of the CC lists may be performed, for example, by the CC component 1144 of the communication manager 1132 of the device 1102.

[0131] The UE capability may be used for multiple TRPs based on multiple downlink control information (multi-DCI) and may include at least one of: a first maximum number of configured UL TCI states per CORESET pool index per BWP per CC, a second maximum number of activated UL TCI states per CORESET pool index per BWP per CC, a third maximum number of configured UL TCI states across all CORESET pool indexes per BWP per CC, a fourth maximum number of activated UL TCI states across all CORESET pool indexes per BWP per CC, a fifth maximum number of configured UL TCI states per CORESET pool index across all CCs, a sixth maximum number of activated UL TCI states per CORESET pool index across all CCs, a seventh maximum number of configured UL TCI states across all CORESET pool indexes across all CCs, an eighth maximum number of activated UL TCI states across all CORESET pool indexes across all CCs, a first support for a default UL TCI state per CORESET pool index per BWP per CC, or a first support for a default UL TCI state per CORESET pool index per BWP per CC. Second support of TCI state. This UE capability can be used for data and control.

[0132] As shown at 1002, the base station may configure one or more CC lists, and the UE capabilities received at 1004 are for at least one of: a fifth maximum number of configured UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, a sixth maximum number of activated UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, a seventh maximum number of configured UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, an eighth maximum number of activated UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, or a second support for a default UL TCI state for each CORESET pool index across all CCs.

[0133] The UE capability may be used for multiple TRPs based on a single DCI and may include at least one of the following: a maximum number of configured UL TCI states mapped to TCI code points of a resource allocation scheme on multiple TRPs scheduled by a scheduled DCI, first support for default TCI code points for multiple UL TCI states mapped to each BWP of each CC, or second support for default TCI code points for multiple UL TCI states mapped to all CCs. For example, the resource allocation scheme may be based on FDM, SDM, or TDM.

[0134] As indicated at 1002, the base station may configure one or more CC lists, and the UE capabilities received at 1004 may be for second support of a default TCI code point mapped to multiple UL TCI states across all CCs in the one or more CC lists.

[0135] The UE capabilities may be used to activate joint DL and UL TCI states across multiple CCs.As shown at 1002, a base station may configure one or more CC lists, and the UE capabilities received at 1004 may be used to activate UL TCI states on multiple CCs in the one or more CC lists.

[0136] UE capabilities may include L1 or L2 based inter-cell mobility based on UL TCI state. UE capabilities may include: support for reference signals or channels for non-serving cells for UL TCI state. Reference signals or channels for non-serving cells may be UL TCI state, provide one or more of DL quasi-co-location assumption or uplink spatial relationship information.

[0137] The UE capability may be used to update the UL TCI state via at least one of MAC-CE or DCI. The UE capability may be used for one or more of: periodic PUCCH, aperiodic PUCCH, semi-persistent PUCCH, PUSCH, SRS and / or PRACH.

[0138] Fig.111100 is a diagram illustrating an example of a hardware implementation of an apparatus 1102. The apparatus 1102 is a BS and includes a baseband unit 1104. The baseband unit 1104 may communicate with the UE 104 via a cellular RF transceiver. The baseband unit 1104 may include a computer-readable medium / memory. The baseband unit 1104 is responsible for general processing, which includes executing software stored on a computer-readable medium / memory. When the software is executed by the baseband unit 1104, the baseband unit 1104 is caused to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by the baseband unit 1104 when executing the software. The baseband unit 1104 also includes a receiving component 1130, a communication manager 1132, and a transmission component 1134. The communication manager 1132 includes one or more of the components shown. The components within the communication manager 1132 may be stored in a computer-readable medium / memory and / or configured as hardware within the baseband unit 1104. The baseband unit 1104 may be a component of the BS 310 and may include a memory 376 and / or at least one of the TX processor 316 , the RX processor 370 , and the controller / processor 375 .

[0139] The communication manager 1132 includes a TCI state capability component 1142 configured to receive UE capabilities associated with a joint DL and UL TCI state, e.g., as described in conjunction with 904, and / or receive UE capabilities associated with a UL TCI state, e.g., as described in conjunction with 1004. The communication manager 1132 includes a CC component 1144 configured to send a configuration of one or more CC lists to the UE 104, e.g., as described in conjunction with 902 and / or 1002. The communication manager 1132 also includes a TCI state configuration component 1146 configured to configure one or more of the joint DL and UL TCI state and / or one or more UL TCI states based on the UE capabilities, e.g., as described in conjunction with 906 or 1006. The communications manager 1132 includes a TCI state activation component 1148 configured to activate one or more of a joint DL and UL TCI state and / or one or more UL TCI states based on UE capabilities, eg, as described in connection with 906 and / or 1006 .

[0140] The apparatus may include means for performing Fig. 9 and Fig.10 Each box in the algorithm in the above flowchart and / or by Figure 4 and / or Figure 5 4 or 504. Fig. 9 and Fig.10Each of the blocks in the foregoing flowchart and / or by Figure 4 and / or Figure 5 The various aspects performed by the base station 404 or 504 in the embodiment may be performed by components, and the apparatus may include one or more of these components. These components may be one or more hardware components specifically configured to perform the stated processing / algorithms, these components may be implemented by a processor configured to perform the stated processing / algorithms, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0141] In one configuration, the apparatus 1102 (specifically the baseband unit 1104) includes: a unit for receiving an indication of UE capabilities associated with a joint DL and UL TCI state from the UE, the joint DL and UL TCI state indicating a common beam for communication in DL and UL; a unit for configuring or activating one or more joint DL and UL TCI states for the UE based on the UE capabilities. The apparatus 1102 may also include: a unit for sending a configuration of one or more CC lists. The apparatus 1102 may also include: a unit for receiving an indication of UE capabilities associated with a UL TCI state from the UE, the UL TCI state indicating a common beam for UL communication; a unit for configuring or activating one or more UL TCI states for the UE based on the UE capabilities. These aforementioned units may be one or more of the aforementioned components of the apparatus 1102 configured to perform the functions described by these aforementioned units. As described above, the apparatus 1102 may include a TX processor 316, an RX processor 370, and a controller / processor 375. Thus, in one configuration, the aforementioned means may be the TX processor 316, the RX processor 370, and the controller / processor 375 configured to perform the functions recited by the aforementioned means.

[0142] It should be understood that the specific order or block hierarchy in the process / flow chart disclosed herein is only an example of an exemplary method. It should be understood that the specific order or block hierarchy in these processes / flow charts can be rearranged based on design preferences. In addition, some blocks can be combined or omitted. The attached method claims provide the elements of various blocks in an exemplary order, but do not mean that they are limited by the specific order or hierarchy provided.

[0143] To enable any person of ordinary skill in the art to implement the various aspects described herein, the above description is made around various aspects. It is obvious to a person of ordinary skill in the art that various modifications to these aspects are possible, and the general principles defined herein may also be applicable to other aspects. Therefore, the present invention is not limited to the aspects shown herein, but is consistent with the full scope of the present invention, wherein, unless otherwise specified, modifying a certain component in a singular form does not mean "one and only one", but may be "one or more". Terms such as "if", "when..." and "when..." should be interpreted as "under..." conditions, rather than implying a direct time relationship or reaction. That is, these phrases (e.g., "when...") do not mean to take action immediately in response to an action or to take action during the occurrence of an action, but simply mean that if the conditions are met, an action will occur, but there is no need to have a specific or immediate time constraint on the occurrence of the action. The word "exemplary" used herein means "used as an example, illustration or explanation". Any aspect described as "exemplary" herein should not be interpreted as being more preferred or more advantageous than other aspects. Unless otherwise specifically stated, the term "some" refers to one or more. Combinations such as “at least one of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B and C,” “one or more of A, B, and C,” and “A, B, C, or any combination thereof” include any combination of A, B, and / or C, which may include multiple A, multiple B, or multiple C. Specifically, combinations such as “at least one of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B, and C,” “one or more of A, B, and C,” and “A, B, C, or any combination thereof” may be only A, only B, only C, A and B, A and C, B and C, or A and B and C, wherein any such combination may include one or more or some of A, B, or C. All structural and functional equivalents to the components of the various aspects described throughout the disclosure that are or become known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. Furthermore, no disclosure herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims. Words such as "module", "device", "element", "equipment", etc. are not substitutes for the word "unit". Therefore, the constituent elements of the claims should not be interpreted as functional modules unless the constituent elements are explicitly stated as "functional modules".

[0144] The following examples are merely illustrative and may be combined with other embodiments or aspects of the teachings described herein without being limited thereto.

[0145] Example 1 is a method for wireless communication of a user equipment (UE), comprising: determining UE capabilities associated with a joint downlink (DL) and uplink (UL) transmission configuration indicator (TCI) state, wherein the joint DL and UL TCI state indicates a common beam used for communication in DL and UL; and sending an indication of the UE capabilities associated with the joint DL and UL TCI state to a base station.

[0146] In Example 2, the method according to Example 1 also includes that the UE capabilities are used for a single transmission reception point (TRP) and include at least one of the following: a first maximum number of configured joint DL and UL TCI states for each bandwidth part (BWP) of each component carrier (CC), a second maximum number of activated joint DL and UL TCI states for each BWP of each CC, a third maximum number of configured joint DL and UL TCI states across all CCs, or a fourth maximum number of activated joint DL and UL TCI states across all CCs.

[0147] In Example 3, the method according to Example 1 or Example 2 also includes that the UE capabilities are used for data and control.

[0148] In Example 4, the method according to any one of Examples 1-3 further includes: receiving a configuration of one or more CC lists, wherein the UE reports the third maximum number of configured joint DL and UL TCI states across all CCs in the one or more CC lists, or the UE capability of the fourth maximum number of activated joint DL and UL TCI states across all CCs in the one or more CC lists.

[0149] In Example 5, the method according to any one of Examples 1-4 also includes that the UE capability is used for multiple transmission reception points (TRPs) based on multiple downlink control information (multi-DCI), and includes at least one of the following items: a first maximum number of configured joint DL and UL TCI states for each control resource set (CORESET) pool index for each bandwidth part (BWP) of each component carrier (CC), a second maximum number of activated joint DL and UL TCI states for each CORESET pool index for each BWP of each CC, a third maximum number of configured joint DL and UL TCI states across all CORESET pool indexes for each BWP of each CC, a fourth maximum number of activated joint DL and UL TCI states across all CORESET pool indexes for each BWP of each CC, a fifth maximum number of configured joint DL and UL TCI states for each CORESET pool index across all CCs, and a fifth maximum number of activated joint DL and UL TCI states for each CORESET pool index across all CCs. a sixth maximum number of TCI states, a seventh maximum number of configured joint DL and UL TCI states across all CCs across all CORESET pool indexes, an eighth maximum number of activated joint DL and UL TCI states across all CCs across all CORESET pool indexes, a first support for default DL and UL TCI states per CORESET pool index for each BWP of each CC, or a second support for default DL and UL TCI states per CORESET pool index across all CCs.

[0150] In Example 6, the method according to any one of Examples 1-5 also includes that the UE capabilities are used for data and control.

[0151] In Example 7, the method according to any one of Examples 1-6 further includes: receiving a configuration of one or more CC lists, wherein the UE reports a UE capability of at least one of: the fifth maximum number of configured joint DL and UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, the sixth maximum number of activated joint DL and UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, the seventh maximum number of configured joint DL and UL TCI states across all CORESET pool indexes across all CCs in the one or more CC lists, the eighth maximum number of activated joint DL and UL TCI states across all CORESET pool indexes across all CCs in the one or more CC lists, or the second support for the default DL and UL TCI states for each CORESET pool index across all CCs.

[0152] In Example 8, the method according to any one of Examples 1-7 also includes that the UE capability is used for multiple transmission reception points (TRPs) based on a single downlink control information (DCI), and includes at least one of the following items: a maximum number of configured joint DL and UL TCI states mapped to TCI code points of the resource allocation scheme on the multiple TRPs scheduled by the scheduled DCI, a first support for default TCI code points for multiple joint DL and UL TCI states mapped to each bandwidth part (BWP) of each component carrier (CC), or a second support for the default TCI code points for the multiple joint DL and UL TCI states mapped to all CCs.

[0153] In Example 9, the method according to any one of Examples 1-8 further includes the resource allocation scheme being based on frequency division multiplexing (FDM), space division multiplexing (SDM), or time division multiplexing (TDM).

[0154] In Example 10, the method according to any one of Examples 1-9 further includes: receiving a configuration of one or more CC lists, wherein the UE reports the UE capability of the second support for the default TCI code points mapped to the multiple joint DL and UL TCI states across all CCs in the one or more CC lists.

[0155] In Example 11, the method of any of Examples 1-10 further includes the UE capabilities being used to activate the joint DL and UL TCI state across multiple component carriers (CCs).

[0156] In Example 12, the method according to any one of Examples 1-11 further includes: receiving a configuration of one or more CC lists, wherein the UE reports the UE capability for activating the joint DL and UL TCI state on the multiple CCs in the one or more CC lists.

[0157] In Example 13, the method according to any one of Examples 1-12 further includes the UE capabilities comprising layer 1 (L1) or layer 2 (L2) based inter-cell mobility based on the joint DL and UL TCI status.

[0158] In Example 14, the method according to any one of Examples 1-13 further includes the UE capabilities including support for reference signals or channels of non-serving cells for the joint DL and UL TCI state.

[0159] In Example 15, the method according to any one of Examples 1-14 also includes the reference signal or the channel of the non-serving cell providing one or more of DL quasi co-location assumption or uplink spatial relationship information for the joint DL and UL TCI state.

[0160] In Example 16, a method according to any one of Examples 1-15, wherein the UE capabilities are used to update the joint DL and UL TCI status via at least one of a media access control control element (MAC-CE) or downlink control information (DCI).

[0161] In Example 17, a method according to any one of Examples 1-16 is provided, wherein the UE capability is indicated for one or more of the following: a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH) scheduled by the DCI, a semi-persistent scheduling (SPS) transmission, a periodic channel state information reference signal (CSI-RS), a semi-persistent CSI-RS, a non-periodic CSI-RS, a positioning reference signal, a periodic physical uplink control channel (PUCCH), a semi-persistent PUCCH, a non-periodic PUCCH, a physical uplink shared channel (PUSCH), a sounding reference signal (SRS), or a physical random access channel (PRACH).

[0162] In Example 18, the method according to any one of Examples 1-17 further includes associating the UE capability with a sounding reference signal (SRS) as a source reference signal.

[0163] In Example 19, the method according to any one of Examples 1-18 also includes that the SRS is the source reference signal for downlink communication.

[0164] In Example 20, the method of Examples 1-19 further includes the joint DL and UL TCI status indication being associated with the SRS and being based on a UE spatial receive filter of the UE capabilities.

[0165] In Example 21, the method according to any one of Examples 1-20 also includes the SRS being used for one or more of: beam management, codebook-based communication, non-codebook-based communication, or antenna switching.

[0166] In Example 22, the method of any of Examples 1-21 further includes the joint DL and UL TCI state indicating the SRS as a quasi co-located (QCL) type D reference signal.

[0167] In Example 23, the method of Examples 1-22 further includes the joint DL and UL TCI state further including at least one additional reference signal for different QCL assumptions.

[0168] Example 24 is a device comprising one or more processors and one or more memories in electronic communication with the one or more processors, the one or more memories storing instructions executable by the one or more processors to cause the device to implement the method described in any one of Examples 1-23.

[0169] Example 25 is a system or apparatus comprising means for implementing a method or an apparatus according to any one of Examples 1-23.

[0170] Example 26 is a non-transitory computer-readable medium storing instructions executable by one or more processors to cause the one or more processors to implement the method according to any of Examples 1-23.

[0171] Example 27 is a method for wireless communication of a user equipment (UE), comprising: determining UE capabilities associated with an uplink (UL) transmission configuration indicator (TCI) state; and sending an indication of the UE capabilities associated with the UL TCI state to a base station.

[0172] In Example 28, the method according to Example 27 also includes that the UE capabilities are for a single transmission reception point (TRP) and include at least one of: a first maximum number of configured joint DL and UL TCI states for each bandwidth part (BWP) of each component carrier (CC), a second maximum number of activated UL TCI states for each BWP of each CC, a third maximum number of configured UL TCI states across all CCs, or a fourth maximum number of activated UL TCI states across all CCs.

[0173] In Example 29, the method according to Example 27 or Example 28 also includes that the UE capabilities are used for data and control.

[0174] In Example 30, the method according to any one of Examples 27-29 further includes: receiving a configuration of one or more CC lists, wherein the UE reports the third maximum number of configured UL TCI states across all CCs in the one or more CC lists, or the UE capability of reporting the fourth maximum number of activated UL TCI states across all CCs in the one or more CC lists.

[0175] In Example 31, the method according to any of Examples 27-30 also includes that the UE capability is for multiple transmission reception points (TRPs) based on multiple downlink control information (multi-DCI), and includes at least one of the following: a first maximum number of configured UL TCI states per control resource set (CORESET) pool index per bandwidth part (BWP) per component carrier (CC), a second maximum number of activated UL TCI states per CORESET pool index per BWP per CC, a third maximum number of configured UL TCI states per BWP per CC across all CORESET pool indexes, a fourth maximum number of activated UL TCI states per BWP per CC across all CORESET pool indexes, a fifth maximum number of configured UL TCI states per CORESET pool index across all CCs, a sixth maximum number of activated UL TCI states per CORESET pool index across all CCs, a seventh maximum number of configured UL TCI states per CORESET pool index across all CCs, and a seventh maximum number of activated UL TCI states per CORESET pool index across all CCs. An eighth maximum number of TCI states, a first support for default UL TCI states per CORESET pool index per BWP per CC, or a second support for default UL TCI states per CORESET pool index across all CCs.

[0176] In Example 32, the method according to any one of Examples 27-31 also includes that the UE capabilities are used for data and control.

[0177] In Example 33, the method according to any one of Examples 27-32 further includes: receiving a configuration of one or more CC lists, wherein the UE reports a UE capability of at least one of: the fifth maximum number of configured UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, the sixth maximum number of activated UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, the seventh maximum number of configured UL TCI states for all CCs in the one or more CC lists across all CORESET pool indexes, the eighth maximum number of activated UL TCI states for all CCs in the one or more CC lists across all CORESET pool indexes, or the second support for the default UL TCI state for each CORESET pool index across all CCs.

[0178] In Example 34, the method according to any one of Examples 27-33 also includes that the UE capability is used for multiple transmission reception points (TRPs) based on a single downlink control information (DCI), and includes at least one of the following: a configured UL TCI state with a maximum number of TCI code points mapped to a resource allocation scheme on the multiple TRPs scheduled by the scheduled DCI, a first support for default TCI code points for multiple UL TCI states mapped to each bandwidth part (BWP) of each component carrier (CC), or a second support for the default TCI code points for the multiple UL TCI states mapped to all CCs.

[0179] In Example 35, the method according to any one of Examples 27-34 further includes the resource allocation scheme being based on frequency division multiplexing (FDM), space division multiplexing (SDM), or time division multiplexing (TDM).

[0180] In Example 36, the method according to any one of Examples 27-35 further includes: receiving a configuration of one or more CC lists, wherein the UE reports the UE capability of the second support for the default TCI code points mapped to the multiple UL TCI states across all CCs in the one or more CC lists.

[0181] In Example 37, the method according to any one of Examples 27-36 further includes the UE capability being used to activate the UL TCI state across multiple component carriers (CCs).

[0182] In Example 38, the method according to any one of Examples 27-37 further includes: receiving a configuration of one or more CC lists, wherein the UE reports the UE capability for activating the UL TCI state on the multiple CCs in the one or more CC lists.

[0183] In Example 39, the method according to any one of Examples 27-38 further includes the UE capabilities comprising inter-cell mobility based on layer 1 (L1) or layer 2 (L2) based on the UL TCI state.

[0184] In Example 40, the method according to any one of Examples 27-39 further includes the UE capabilities including support for a reference signal or channel of a non-serving cell in the UL TCI state.

[0185] In Example 41, the method according to any one of Examples 27-40 also includes the reference signal or the channel of the non-serving cell providing one or more of a DL quasi co-location assumption or uplink spatial relationship information for the UL TCI state.

[0186] In Example 42, the method according to any one of Examples 27-41 also includes the UE capability being used to update the UL TCI state via at least one of a media access control control element (MAC-CE) or downlink control information (DCI).

[0187] In Example 43, the method according to any one of Examples 27-42 also includes indicating the UE capability for one or more of the following: a periodic physical uplink control channel (PUCCH), a semi-persistent PUCCH, a non-periodic PUCCH, a physical uplink shared channel (PUSCH), a sounding reference signal (SRS), or a physical random access channel (PRACH).

[0188] Example 44 is a device comprising one or more processors and one or more memories in electronic communication with the one or more processors, the one or more memories storing instructions executable by the one or more processors to cause the device to implement the method described in any one of Examples 27-43.

[0189] Example 45 is a system or apparatus comprising means for implementing a method or implementing an apparatus according to any one of Examples 27-43.

[0190] Example 46 is a non-transitory computer-readable medium storing instructions executable by one or more processors to cause the one or more processors to implement the method according to any of Examples 27-43.

[0191] Example 47 is a method for wireless communication of a base station, comprising: receiving an indication of UE capabilities associated with a joint downlink (DL) and uplink (UL) transmission configuration indicator (TCI) state from a UE, wherein the joint DL and UL TCI state indicates a common beam used for communication in DL and UL; and based on the UE capabilities, configuring or activating one or more joint DL and UL TCI states for the UE.

[0192] In Example 48, the method according to Example 47 also includes that the UE capabilities are used for a single transmission reception point (TRP) and include at least one of the following: a first maximum number of configured joint DL and UL TCI states for each bandwidth part (BWP) of each component carrier (CC), a second maximum number of activated joint DL and UL TCI states for each BWP of each CC, a third maximum number of configured joint DL and UL TCI states across all CCs, or a fourth maximum number of activated joint DL and UL TCI states across all CCs.

[0193] In Example 49, the method according to Example 47 or 48 also includes that the UE capabilities are used for data and control.

[0194] In Example 50, the method according to any one of Examples 47-49 further includes: sending a configuration of one or more CC lists, wherein the UE capability is received for the third maximum number of configured joint DL and UL TCI states for all CCs in the one or more CC lists or the fourth maximum number of activated joint DL and UL TCI states for all CCs in the one or more CC lists.

[0195] In Example 51, the method according to any of Examples 47-50 also includes that the UE capability is used for multiple transmission reception points (TRPs) based on multiple downlink control information (multi-DCI), and includes at least one of the following items: a first maximum number of configured joint DL and UL TCI states for each control resource set (CORESET) pool index per bandwidth part (BWP) per component carrier (CC), a second maximum number of activated joint DL and UL TCI states for each CORESET pool index per BWP per CC, a third maximum number of configured joint DL and UL TCI states across all CORESET pool indexes for each BWP per CC, a fourth maximum number of activated joint DL and UL TCI states across all CORESET pool indexes for each BWP per CC, a fifth maximum number of configured joint DL and UL TCI states for each CORESET pool index across all CCs, and a fifth maximum number of activated joint DL and UL TCI states for each CORESET pool index across all CCs. a sixth maximum number of TCI states, a seventh maximum number of configured joint DL and UL TCI states across all CCs across all CORESET pool indexes, an eighth maximum number of activated joint DL and UL TCI states across all CCs across all CORESET pool indexes, first support for default DL and UL TCI states for each CORESET pool index for each BWP of each CC, or second support for default DL and UL TCI states for each CORESET pool index across all CCs.

[0196] In Example 52, the method according to any one of Examples 47-51 also includes that the UE capabilities are used for data and control.

[0197] In Example 53, the method according to any one of Examples 47-52 further includes: sending a configuration of one or more CC lists, wherein at least one of the following items of the UE capability is received: the fifth maximum number of configured joint DL and UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, the sixth maximum number of activated joint DL and UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, the seventh maximum number of configured joint DL and UL TCI states across all CORESET pool indexes across all CCs in the one or more CC lists, the eighth maximum number of activated joint DL and UL TCI states across all CORESET pool indexes across all CCs in the one or more CC lists, or the second support for the default DL and UL TCI state for each CORESET pool index across all CCs.

[0198] In Example 54, the method according to any one of Examples 47-53 also includes that the UE capability is used for multiple transmission reception points (TRPs) based on a single downlink control information (DCI), and includes at least one of the following: a maximum number of configured joint DL and UL TCI states of TCI code points mapped to a resource allocation scheme on the multiple TRPs scheduled by the scheduled DCI, a first support for default TCI code points for multiple joint DL and UL TCI states mapped to each bandwidth part (BWP) of each component carrier (CC), or a second support for the default TCI code points for the multiple joint DL and UL TCI states mapped to all CCs.

[0199] In Example 55, the method according to any one of Examples 47-54, wherein the resource allocation scheme is based on frequency division multiplexing (FDM), space division multiplexing (SDM), or time division multiplexing (TDM).

[0200] In Example 56, the method according to Examples 47-55 further includes: sending a configuration of one or more CC lists, wherein the UE capability is received for the second support for the default TCI code points mapped to the multiple joint DL and UL TCI states across all CCs in the one or more CC lists.

[0201] In Example 57, the method of any one of Examples 47-56 further includes the UE capabilities being used to activate the joint DL and UL TCI state across multiple component carriers (CCs).

[0202] In Example 58, the method according to any one of Examples 47-57 further includes: sending a configuration of one or more CC lists, wherein the UE capability is received for activation of the joint DL and ULTCI state on the multiple CCs in the one or more CC lists.

[0203] In Example 59, the method according to any one of Examples 47-58 further includes the UE capabilities comprising layer 1 (L1) or layer 2 (L2) based inter-cell mobility based on the joint DL and UL TCI state.

[0204] In Example 60, the method according to any one of Examples 47-59 further includes the UE capabilities including support for reference signals or channels of non-serving cells for the joint DL and UL TCI state.

[0205] In Example 61, the method according to any one of Examples 47-60 also includes the reference signal or the channel of the non-serving cell providing one or more of DL quasi co-location assumption or uplink spatial relationship information for the joint DL and UL TCI state.

[0206] In Example 62, the method of Examples 47-61 further includes the UE capability being used to update the joint DL and UL TCI state via at least one of a media access control control element (MAC-CE) or downlink control information (DCI).

[0207] In Example 63, the method according to any one of Examples 47-62 also includes indicating the UE capability for one or more of the following: a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH) scheduled by the DCI, a semi-persistent scheduling (SPS) transmission, a periodic channel state information reference signal (CSI-RS), a semi-persistent CSI-RS, a non-periodic CSI-RS, a positioning reference signal, a periodic physical uplink control channel (PUCCH), a semi-persistent PUCCH, a non-periodic PUCCH, a physical uplink shared channel (PUSCH), a sounding reference signal (SRS) or a physical random access channel (PRACH).

[0208] In Example 64, the method according to any one of Examples 47-63 further includes associating the UE capability with a sounding reference signal (SRS) as a source reference signal.

[0209] In Example 65, the method according to any one of Examples 47-65 also includes that the SRS is the source reference signal for downlink communication.

[0210] In Example 66, the method of any of Examples 47-65 further includes the joint DL and UL TCI status indicating a UE spatial receive filter associated with the SRS and based on the UE capabilities.

[0211] In Example 67, the method according to any one of Examples 47-66 also includes the SRS being used for one or more of: beam management, codebook-based communication, non-codebook-based communication, or antenna switching.

[0212] In Example 68, the method of any of Examples 47-67 further includes the joint DL and UL TCI state indicating the SRS as a quasi co-located (QCL) type D reference signal.

[0213] In Example 69, the method of any of Examples 47-68 further includes the joint DL and UL TCI state further including at least one additional reference signal for different QCL hypotheses.

[0214] Example 70 is a device comprising one or more processors and one or more memories in electronic communication with the one or more processors, the one or more memories storing instructions executable by the one or more processors to cause the device to implement a method according to any one of Examples 47-69.

[0215] Example 71 is a system or apparatus comprising a unit for implementing a method or implementing an apparatus according to any one of Examples 47-69.

[0216] Example 72 is a non-transitory computer-readable medium storing instructions executable by one or more processors to cause the one or more processors to implement the method according to any of Examples 47-69.

[0217] Example 73 is a method for wireless communication of a base station, comprising: receiving an indication of UE capabilities associated with an uplink (UL) transmission configuration indicator (TCI) state from a UE, wherein the UL TCI state indicates a common beam used for communication in DL and UL; and based on the UE capabilities, configuring or activating one or more UL TCI states for the UE.

[0218] In Example 74, the method according to Example 73 also includes that the UE capabilities are used for a single transmission reception point (TRP) and include at least one of: a first maximum number of configured UL TCI states for each bandwidth part (BWP) of each component carrier (CC), a second maximum number of activated UL TCI states for each BWP of each CC, a third maximum number of UL TCI states configured across all CCs, or a fourth maximum number of UL TCI states activated on all CCs.

[0219] In Example 75, the method according to Example 73 or Example 74 also includes that the UE capabilities are used for data and control.

[0220] In Example 76, the method according to any one of Examples 73-75 further includes: sending a configuration of one or more CC lists, wherein the UE capability is received for the third maximum number of configured UL TCI states for all CCs in the one or more CC lists or the fourth maximum number of activated UL TCI states for all CCs in the one or more CC lists.

[0221] In Example 77, the method according to any of Examples 73-76 also includes that the UE capability is for multiple transmission reception points (TRPs) based on multiple downlink control information (multi-DCI), and includes at least one of the following: a first maximum number of configured UL TCI states for each control resource set (CORESET) pool index per bandwidth part (BWP) per component carrier (CC), a second maximum number of activated UL TCI states for each CORESET pool index per BWP per CC, a third maximum number of configured UL TCI states across all CORESET pool indexes per BWP per CC, a fourth maximum number of activated UL TCI states across all CORESET pool indexes per BWP per CC, a fifth maximum number of configured UL TCI states for each CORESET pool index across all CCs, a sixth maximum number of activated UL TCI states for each CORESET pool index across all CCs, a seventh maximum number of configured UL TCI states across all CORESET pool indexes across all CCs, and a seventh maximum number of activated UL TCI states across all CORESET pool indexes across all CCs. An eighth maximum number of TCI states, each CORESET pool index per BWP per CC, a first support for a default UL TCI state, or a second support for a default UL TCI state per CORESET pool index across all CCs.

[0222] In Example 78, the method according to any one of Examples 73-77 also includes that the UE capabilities are used for data and control.

[0223] In Example 79, the method according to any one of Examples 73-78 further includes: sending a configuration of one or more CC lists, wherein at least one of the following items of the UE capability is received: the fifth maximum number of configured UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, the sixth maximum number of activated UL TCI states for each CORESET pool index across all CCs in the one or more CC lists, the seventh maximum number of configured UL TCI states for all CCs in the one or more CC lists across all CORESET pool indexes, the eighth maximum number of activated UL TCI states for all CCs in the one or more CC lists across all CORESET pool indexes, or the second support for the default UL TCI state for each CORESET pool index across all CCs.

[0224] In Example 80, the method according to any one of Examples 73-79 also includes that the UE capability is used for multiple transmission reception points (TRPs) based on a single downlink control information (DCI), and includes at least one of the following: a maximum number of configured UL TCI states for TCI code points mapped to a resource allocation scheme on the multiple TRPs scheduled by the scheduled DCI, first support for default TCI code points for multiple UL TCI states mapped to each bandwidth part (BWP) of each component carrier (CC), or second support for the default TCI code points for the multiple UL TCI states mapped to all CCs.

[0225] In Example 81, the method according to any one of Examples 73-80 also includes the resource allocation scheme being based on frequency division multiplexing (FDM), space division multiplexing (SDM), or time division multiplexing (TDM).

[0226] In Example 82, the method according to any one of Examples 73-81 further includes: sending a configuration of one or more CC lists, wherein the UE capability is received for the second support for the default TCI code points mapped to the multiple UL TCI states across all CCs in the one or more CC lists.

[0227] In Example 83, the method according to any one of Examples 73-83 further includes the UE capability being used to activate the UL TCI state across multiple component carriers (CCs).

[0228] In Example 84, the method according to any one of Examples 73-83 further includes: sending a configuration of one or more CC lists, wherein the UE capability is received for activation of the UL TCI state on the multiple CCs in the one or more CC lists.

[0229] In Example 85, the method according to any one of Examples 73-84 further includes the UE capabilities comprising inter-cell mobility based on layer 1 (L1) or layer 2 (L2) based on the UL TCI state.

[0230] In Example 86, the method according to any one of Examples 73-85 further includes the UE capabilities including support for a reference signal or channel of a non-serving cell in the UL TCI state.

[0231] In Example 87, the method according to any one of Examples 73-86 also includes the reference signal or the channel of the non-serving cell providing one or more of a DL quasi-co-site assumption or uplink spatial relationship information for the UL TCI state.

[0232] In Example 88, the method according to any one of Examples 73-87 also includes the UE capability being used to update the ULTCI state via at least one of a media access control control element (MAC-CE) or downlink control information (DCI).

[0233] In Example 89, the method according to any one of Examples 73-88 also includes indicating the UE capability for one or more of the following: a periodic physical uplink control channel (PUCCH), a semi-persistent PUCCH, a non-periodic PUCCH, a physical uplink shared channel (PUSCH), a sounding reference signal (SRS), or a physical random access channel (PRACH).

[0234] Example 90 is a device comprising one or more processors and one or more memories in electronic communication with the one or more processors, the one or more memories storing instructions executable by the one or more processors to cause the device to implement a method according to any one of Examples 73-89.

[0235] Example 91 is a system or apparatus comprising a unit for implementing a method or implementing an apparatus according to any one of Examples 73-89.

[0236] Example 92 is a non-transitory computer-readable medium storing instructions executable by one or more processors to cause the one or more processors to implement the method according to any one of Examples 73-89.

Claims

1. A method for wireless communication of a user equipment (UE), comprising: determining UE capabilities associated with a joint downlink (DL) and uplink (UL) transmission configuration indicator (TCI) state indicating a common beam for communications in both the DL and UL; and sending an indication of the UE capabilities associated with the joint DL and UL TCI state to a base station, The UE capability is used for activation of the joint DL and UL TCI state across multiple component carriers (CCs).

2. The method according to claim 1, wherein: The UE capabilities are for a single transmission reception point (TRP) and include at least one of the following: a first maximum number of configured joint DL and UL TCI states per bandwidth part (BWP) per component carrier (CC), a second maximum number of activated joint DL and UL TCI states per BWP per CC, a third maximum number of configured joint DL and UL TCI states across all CCs, or A fourth maximum number of activated joint DL and UL TCI states across all CCs.

3. The method according to claim 2, further comprising: Receive a configuration of one or more CC lists, wherein the UE reports the UE capability for the third maximum number of configured joint DL and UL TCI states across all CCs in the one or more CC lists, or the fourth maximum number of activated joint DL and UL TCI states across all CCs in the one or more CC lists.

4. The method according to claim 1, wherein: The UE capability is for multiple transmission reception points (TRPs) based on multiple downlink control information (multi-DCI), and includes at least one of the following: a first maximum number of configured joint DL and UL TCI states per control resource set (CORESET) pool index per bandwidth part (BWP) per component carrier (CC), the second maximum number of activated joint DL and UL TCI states per CORESET pool index per BWP per CC, the third maximum number of configured joint DL and UL TCI states across all CORESET pool indices per BWP per CC, a fourth maximum number of activated joint DL and UL TCI states across all CORESET pool indices per BWP per CC, the fifth maximum number of configured joint DL and UL TCI states per CORESET pool index across all CCs, the sixth maximum number of activated joint DL and UL TCI states per CORESET pool index across all CCs, the seventh maximum number of configured joint DL and UL TCI states across all CCs across all CORESET pool indexes, the eighth maximum number of activated joint DL and UL TCI states across all CCs across all CORESET pool indices, First support for default DL and UL TCI states per CORESET pool index per BWP per CC, or Second support for the default DL and UL TCI states per CORESET pool index across all CCs.

5. The method according to claim 1, wherein: The UE capability is for multiple transmission reception points (TRPs) based on a single downlink control information (DCI) and includes at least one of the following: a maximum number of configured joint DL and UL TCI states mapped to TCI code points for the resource allocation scheme over the plurality of TRPs scheduled by the scheduled DCI, First support for default TCI codepoints mapped to multiple joint DL and UL TCI states per bandwidth part (BWP) per component carrier (CC), or Second support for the default TCI code point mapped to the multiple joint DL and UL TCI states across all CCs.

6. The method according to claim 5, further comprising: A configuration of one or more CC lists is received, wherein the UE reports the UE capability of the second support for the default TCI code points mapped to the multiple joint DL and UL TCI states across all CCs in the one or more CC lists.

7. The method according to claim 1, further comprising: A configuration of one or more CC lists is received, wherein the UE reports the UE capabilities for activation of the joint DL and UL TCI state across the plurality of CCs in the one or more CC lists.

8. The method according to claim 1, wherein: The UE capability is used to update the joint DL and UL TCI status via at least one of a medium access control control element (MAC-CE) or downlink control information (DCI).

9. An apparatus for wireless communication of a user equipment (UE), comprising: means for determining UE capabilities associated with a joint downlink (DL) and uplink (UL) transmission configuration indicator (TCI) state indicating a common beam for communications in both DL and UL; and means for sending an indication of the UE capabilities associated with the joint DL and UL TCI state to a base station, The UE capability is used for activation of the joint DL and UL TCI state across multiple component carriers (CCs).

10. An apparatus for wireless communication at a user equipment (UE), comprising: Memory; as well as at least one processor coupled to the memory and configured to: determining UE capabilities associated with a joint downlink (DL) and uplink (UL) transmission configuration indicator (TCI) state indicating a common beam for communications in both the DL and UL; and sending an indication of the UE capabilities associated with the joint DL and UL TCI state to a base station, The UE capability is used for activation of the joint DL and UL TCI state across multiple component carriers (CCs).

11. The device according to claim 10, wherein: The UE capabilities are for a single transmission reception point (TRP) and include at least one of the following: a first maximum number of configured joint DL and UL TCI states per bandwidth part (BWP) per component carrier (CC), a second maximum number of activated joint DL and UL TCI states per BWP per CC, a third maximum number of configured joint DL and UL TCI states across all CCs, or A fourth maximum number of activated joint DL and UL TCI states across all CCs.

12. The device according to claim 11, wherein The at least one processor is also configured to receive a configuration of one or more CC lists, wherein the UE reports the UE capability for the third maximum number of configured joint DL and UL TCI states across all CCs in the one or more CC lists, or the fourth maximum number of activated joint DL and UL TCI states across all CCs in the one or more CC lists.

13. The device according to claim 12, wherein: The UE capability is for multiple transmission reception points (TRPs) based on a single downlink control information (DCI) and includes at least one of the following: a maximum number of configured joint DL and UL TCI states mapped to TCI code points for the resource allocation scheme over the plurality of TRPs scheduled by the scheduled DCI, First support for default TCI codepoints mapped to multiple joint DL and UL TCI states per bandwidth part (BWP) per component carrier (CC), or Second support for the default TCI code point mapped to the multiple joint DL and UL TCI states across all CCs.

14. A method for wireless communication of a user equipment (UE), comprising: determining UE capabilities associated with an uplink (UL) transmission configuration indicator (TCI) state; as well as sending an indication of the UE capabilities associated with the UL TCI state to a base station, The UE capability is used for activation of the UL TCI state across multiple component carriers (CCs).

15. The method according to claim 14, wherein: The UE capabilities are for a single transmission reception point (TRP) and include at least one of the following: a first maximum number of configured UL TCI states per bandwidth part (BWP) per component carrier (CC), a second maximum number of activated UL TCI states per BWP per CC, a third maximum number of configured UL TCI states across all CCs, or A fourth maximum number of activated UL TCI states across all CCs.

16. The method according to claim 15, wherein: The UE capabilities are for data and control.

17. The method according to claim 15, further comprising: Receive a configuration of one or more CC lists, wherein the UE reports the UE capability for the third maximum number of configured UL TCI states across all CCs in the one or more CC lists, or the fourth maximum number of activated UL TCI states across all CCs in the one or more CC lists.

18. The method according to claim 14, wherein: The UE capability is for multiple transmission reception points (TRPs) based on multiple downlink control information (multi-DCI), and includes at least one of the following: a first maximum number of configured UL TCI states per control resource set (CORESET) pool index per bandwidth part (BWP) per component carrier (CC), The second maximum number of activated UL TCI states per CORESET pool index per BWP per CC, the third maximum number of configured UL TCI states across all CORESET pool indices per BWP per CC, The fourth maximum number of activated UL TCI states across all CORESET pool indices per BWP per CC, the fifth maximum number of configured UL TCI states per CORESET pool index across all CCs, the sixth maximum number of activated UL TCI states per CORESET pool index across all CCs, the seventh maximum number of configured UL TCI states across all CCs across all CORESET pool indexes, the eighth maximum number of activated UL TCI states across all CCs across all CORESET pool indices, First support for default UL TCI state per CORESET pool index per BWP per CC, or Second support for the default UL TCI state per CORESET pool index across all CCs.

19. The method according to claim 18, further comprising: Receiving a configuration of one or more CC lists, wherein the UE reports the UE capability for at least one of: the fifth maximum number of configured UL TCI states per CORESET pool index across all CCs in the one or more CC lists, the sixth maximum number of activated UL TCI states per CORESET pool index across all CCs in the one or more CC lists, said seventh maximum number of configured UL TCI states across all CORESET pool indexes across all CCs in said one or more CC lists, the eighth maximum number of activated UL TCI states across all CORESET pool indexes across all CCs in the one or more CC lists, or said second support for said default UL TCI state per CORESET pool index across all CCs.

20. The method according to claim 14, wherein: The UE capability is for multiple transmission reception points (TRPs) based on a single downlink control information (DCI) and includes at least one of the following: a maximum number of configured UL TCI states mapped to TCI codepoints for a resource allocation scheme over the plurality of TRPs scheduled by the scheduled DCI, First support for default TCI codepoints mapped to multiple UL TCI states per bandwidth part (BWP) per component carrier (CC), or Second support for the default TCI code point mapped to the multiple UL TCI states across all CCs.

21. The method according to claim 20, wherein: The resource allocation scheme is based on frequency division multiplexing (FDM), space division multiplexing (SDM) or time division multiplexing (TDM).

22. The method according to claim 20, further comprising: A configuration of one or more CC lists is received, wherein the UE reports the UE capability of the second support for the default TCI code points mapped to the multiple UL TCI states across all CCs in the one or more CC lists.

23. The method of claim 14, further comprising: A configuration of one or more CC lists is received, wherein the UE reports the UE capabilities for activation of the UL TCI state across the plurality of CCs in the one or more CC lists.

24. The method according to claim 14, wherein: The UE capabilities include inter-cell mobility based on layer 1 (L1) or layer 2 (L2) based on the UL TCI state.

25. The method according to claim 24, wherein: The UE capabilities include support for a reference signal or channel of a non-serving cell for the UL TCI state.

26. The method according to claim 25, wherein: The reference signal or the channel of the non-serving cell provides one or more of a DL quasi co-location assumption or uplink spatial relation information for the UL TCI state.

27. The method of claim 14, wherein: The UE capability is used to update the UL TCI state via at least one of a medium access control control element (MAC-CE) or downlink control information (DCI).

28. The method according to claim 27, wherein: The UE capabilities are indicated for one or more of the following: Periodic Physical Uplink Control Channel (PUCCH), Semi-persistent PUCCH, Aperiodic PUCCH, Physical Uplink Shared Channel (PUSCH), Sounding Reference Signal (SRS), or Physical Random Access Channel (PRACH).

29. An apparatus for wireless communication of a user equipment (UE), comprising: Memory; as well as at least one processor coupled to the memory and configured to: determining UE capabilities associated with an uplink (UL) transmission configuration indicator (TCI) state; as well as sending an indication of the UE capabilities associated with the UL TCI state to a base station, The UE capability is used for activation of the UL TCI state across multiple component carriers (CCs).

30. The device according to claim 29, wherein: The UE capabilities are for a single transmission reception point (TRP) and include at least one of the following: a first maximum number of configured UL TCI states per bandwidth part (BWP) per component carrier (CC), a second maximum number of activated UL TCI states per BWP per CC, a third maximum number of configured UL TCI states across all CCs, or A fourth maximum number of activated UL TCI states across all CCs.

31. The device according to claim 30, wherein The at least one processor is further configured to: Receive a configuration of one or more CC lists, wherein the UE reports the UE capability for the third maximum number of configured UL TCI states across all CCs in the one or more CC lists, or the fourth maximum number of activated UL TCI states across all CCs in the one or more CC lists.

32. The device according to claim 29, wherein: The UE capability is for multiple transmission reception points (TRPs) based on a single downlink control information (DCI) and includes at least one of the following: a maximum number of configured UL TCI states mapped to TCI codepoints for a resource allocation scheme over the plurality of TRPs scheduled by the scheduled DCI, First support for default TCI codepoints mapped to multiple UL TCI states per bandwidth part (BWP) per component carrier (CC), or Second support for the default TCI code point mapped to the multiple UL TCI states across all CCs.

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