Joint DL / UL TCI status activation

Abstract

Aspects of the disclosure relate to cross-component carrier (CC) activation of joint downlink (DL) / uplink (UL) transmission configuration indicator (TCI) states. In one aspect, an apparatus receives, from a base station, an activation of a joint DL and UL TCI state for a CC, the joint DL and UL TCI state indicating a common beam for communications in a DL and a UL. The apparatus applies the joint DL and UL TCI state to multiple CCs in response to receiving the activation of the joint DL and UL TCI state for the CC.

Description

[0001] Cross-references to related applications

[0002] This application claims the rights and priorities of the following applications: International Patent Application No. PCT / CN2020 / 114220, filed on September 9, 2020, entitled “METHODS AND APPARATUS FOR ACTIVATION OF JOINT DL / UL TCI STATE”; and International Patent Application No. PCT / CN2020 / 114233, filed on September 9, 2020, entitled “CROSS-COMPONENTCARRIER ACTIVATION OF JOINT DL / UL TCI STATE”, the entire contents of which are expressly incorporated herein by reference. Technical Field

[0003] In summary, this disclosure relates to communication systems, and more specifically, to cross-component carrier (CC) activation of the Joint Downlink (DL) / Uplink (UL) Transport Configuration Indicator (TCI) state. Background Technology

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that enable 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.

[0005] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol enabling different wireless devices to communicate at the city, country, region, and even global levels. An example telecommunications standard is 5G New Radio (NR). 5G NR is part of the continuous evolution of mobile broadband released by the 3rd 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 can be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvements to 5G NR technology. These improvements can also be applied to other multiple access technologies and telecommunications standards that adopt them. Summary of the Invention

[0006] The following provides a brief overview of one or more aspects to offer a basic understanding of such aspects. This overview is not a comprehensive summary of all anticipated aspects, and is neither intended to identify key or important elements of all aspects, nor to depict the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed descriptions that follow.

[0007] In one aspect of this disclosure, a method, computer-readable medium, and apparatus are provided. The apparatus may be a device at a base station. The device may be a processor and / or modem at the base station or the base station itself. The apparatus is configured to include a list of multiple CCs. The apparatus may send to a user equipment (UE) activation of a joint DL and UL TCI state for CCs included in the CC list, activating the joint DL and UL TCI state for each of the multiple CCs included in the list, wherein the joint DL and UL TCI state indicates a common beam for communication in the DL and UL. The base station may send to the UE a Media Access Control (MAC) control element (CE) (MAC-CE), which activates a subset of configured joint DL and UL TCI states, each activated joint DL and UL TCI state indicating a common beam for communication in the DL and UL. The base station may send to the UE a configuration indicating the applicable DL / UL type resources for the activated joint DL / UL TCI states. Applicable DL / UL type resources may include one or more of the following for DL: Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), Channel State Information (CSI) Reference Signal (RS) (CSI-RS), or Positioning RS (PRS); and one or more of the following for UL: Physical Uplink Control Channel (PUCCH), Physical Uplink Shared Channel (PUSCH), Sounding Reference Signal (SRS), or Physical Random Access Channel (PRACH). Configuration may be received via at least one of Radio Resource Control (RRC) signaling, MAC-CE, and / or Control Information (DCI). The base station may send a DCI to the UE indicating an index of a TCI code point, the index corresponding to one of the activated joint DL and UL TCI states.

[0008] The apparatus can be a device at the UE. The device can be a processor and / or modem at the UE, or the UE itself. The apparatus receives from the base station activation of a joint DL and UL TCI state for CC, the joint DL and UL TCI state indicating the common beam for communication of data and control channels in DL and UL. In response to receiving activation of the joint DL and UL TCI state for CC, the apparatus applies the joint DL and UL TCI state to multiple CCs. The UE can send an acknowledgment to the base station confirming receipt of a DCI indicating the TCI state. The base station can send indications of DL and UL resources for communication to the UE. These indications can be received via RRC signaling, MAC-CE, or DCI. The UE can determine the DL and UL resources for communication applied by an activated joint DL and UL TCI state corresponding to the index of the TCI code point indicated by the DCI. The DL and UL resources for communication can be determined based on predefined rules or the received indications. The UE and base station can communicate with each other via DL and UL based on the activated joint DL and UL TCI states.

[0009] To achieve the foregoing and related objectives, one or more aspects include the features fully described below and specifically pointed out in the claims. The following description and drawings set forth certain illustrative features of one or more aspects in detail. However, these features indicate only a few of the various ways in which the principles of each aspect may be employed, and this specification is intended to include all such aspects and their equivalents. Attached Figure Description

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

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

[0012] Figure 2B This is a schematic diagram illustrating an example of a DL channel within a subframe according to various aspects of this disclosure.

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

[0014] Figure 2D This is a schematic diagram illustrating an example of a UL channel within a subframe according to various aspects of this disclosure.

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

[0016] Figure 4 This is an example of MAC-CE for wireless communication.

[0017] Figure 5 This is a call flowchart for wireless communication.

[0018] Figure 6 This is a flowchart of a wireless communication method.

[0019] Figure 7 This is a flowchart of a wireless communication method.

[0020] Figure 8 This is a flowchart of a wireless communication method.

[0021] Figure 9 This is a flowchart of a wireless communication method.

[0022] Figure 10A This is a schematic diagram illustrating the MAC-CE used to activate the combined DL / UL TCI state.

[0023] Figure 10B This is a schematic diagram showing a configured list of CCs for cross-CC activation.

[0024] Figure 11 This is a call flow diagram of signaling between the UE and the base station.

[0025] Figure 12 This is a flowchart of a wireless communication method.

[0026] Figure 13 This is a flowchart of a wireless communication method.

[0027] Figure 14 This is a flowchart of a wireless communication method.

[0028] Figure 15 This is a flowchart of a wireless communication method.

[0029] Figure 16 This is a schematic diagram illustrating an example of a hardware implementation for an example device.

[0030] Figure 17 This is a schematic diagram illustrating an example of a hardware implementation for an example device. Detailed Implementation

[0031] The specific embodiments described below with reference to the accompanying drawings are intended as a description of various configurations and are not intended to represent the only configurations in which the concepts described herein can be practiced. Specific details are included in the specific embodiments for the purpose of providing a full understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form in order to avoid obscuring such concepts.

[0032] Several aspects of a telecommunications system will now be described with reference to various apparatuses and methods. These apparatuses and methods will be described in detail below and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as “elements”). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the system as a whole.

[0033] By way of example, an element, 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, system-on-a-chip (SoCs), baseband processors, field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functions described throughout this disclosure. One or more processors in a processing system can execute software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, software should be interpreted broadly as meaning instructions, instruction sets, code, code segments, program code, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc.

[0034] Accordingly, in one or more example embodiments, the described functionality may be implemented in hardware, software, or any combination thereof. If implemented in software, the functionality may be stored or encoded as one or more instructions or code on a computer-readable medium. A computer-readable medium includes a computer storage medium. The storage medium can be any available medium accessible by a computer. By way of example, and not limitation, such a computer-readable medium may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of these types of computer-readable media, or any other medium that can be used to store computer-executable code in the form of computer-accessible instructions or data structures.

[0035] While aspects and implementations are described herein by way of example, those skilled in the art will understand that additional implementations and use cases may arise in many different arrangements and scenarios. The innovations described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and package arrangements. For example, implementations and / or use cases may arise via integrated chip implementations and other devices based on non-modular components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchasing devices, medical devices, AI-enabled devices, etc.). While some examples may or may not be specific to a particular use case or application, a wide variety of applicability to the described innovations is possible. Implementations can vary from chip-level or modular components to non-modular, non-chip-level implementations, and further to aggregated, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovations. In some practical settings, devices incorporating the described aspects and features may also include additional components and features for implementing and enforcing the claimed and described aspects. For example, the transmission and reception of wireless signals necessarily involve multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / converters, etc.). The innovations described herein are intended to be implemented in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated or decomposed components, end-user devices, etc., with different sizes, shapes, and constructions.

[0036] Figure 1This is a schematic diagram illustrating 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)). Base station 102 may include macro cells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Macro cells include base stations. Small cells include femtocells, picocells, and microcells.

[0037] Base station 102 configured for 4G LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with EPC 160 via a first backhaul link 132 (e.g., S1 interface). Base station 102 configured for 5G NR (collectively referred to as Next Generation RAN (NG-RAN)) can interface with core network 190 via a second backhaul link 184. Among other functions, base station 102 can also perform one or more of the following functions: transmission of user data, radio 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, location, and delivery of warning messages. Base station 102 can communicate with each other directly or indirectly (e.g., via EPC 160 or core network 190) via third backhaul link 134 (e.g., X2 interface). First backhaul link 132, second backhaul link 184 and third backhaul link 134 can be wired or wireless.

[0038] 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. Overlapping geographic coverage areas 110 may exist. For example, small cell 102' may have a coverage area 110' that overlaps with the coverage areas 110 of one or more macro base stations 102. A network that includes both small cells and macro cells can be referred to as a heterogeneous network. The heterogeneous network may also include evolved home node B (eNB) (HeNB), which can provide services to restricted groups referred to as closed subscriber groups (CSG). The communication link 120 between base station 102 and UE 104 may include uplink (UL) (also referred to as reverse link) transmission from UE 104 to base station 102 and / or downlink (DL) (also referred to as forward link) transmission from base station 102 to UE 104. The communication link 120 may use multiple-input multiple-output (MIMO) antenna technologies, including spatial multiplexing, beamforming, and / or transmit diversity. The communication link may be via one or more carriers. Base station 102 / UE 104 may use spectrum allocated in carrier aggregation for a total of up to Y x MHz (x component carriers) for transmission in each direction, with a bandwidth of up to Y MHz per carrier (e.g., 5, 10, 15, 20, 100, 400, etc.). Carriers may be adjacent to each other or may not be adjacent to each other. Carrier allocation may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated to DL compared to UL). Component carriers may include primary component carriers and one or more secondary component carriers. The primary component carrier may be referred to as the primary cell (PCell), and the secondary component carrier may be referred to as the secondary cell (SCell).

[0039] Some UEs 104 can communicate with each other using device-to-device (D2D) communication link 158. D2D communication link 158 can use DL / UL WWAN spectrum. D2D communication link 158 can use one or more sideline channels, such as the Physical Sideline Broadcast Channel (PSBCH), Physical Sideline Discovery Channel (PSDCH), Physical Sideline Shared Channel (PSSCH), and Physical Sideline Control Channel (PSCCH). D2D communication can be achieved through a variety of wireless D2D communication systems, such as WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR.

[0040] The wireless communication system may also include a Wi-Fi access point (AP) 150, which communicates with a Wi-Fi station (STA) 152 via a communication link 154 in, for example, an unlicensed spectrum of 5 GHz. When communicating in unlicensed spectrum, the STA 152 / AP 150 may perform a free channel assessment (CCA) before communication to determine whether the channel is available.

[0041] Small cell 102' can operate in licensed and / or unlicensed spectrum. When operating in unlicensed spectrum, small cell 102' can employ NR and use the same unlicensed spectrum (e.g., 5 GHz, etc.) as used by Wi-Fi AP 150. Small cell 102' employing NR in unlicensed spectrum can improve coverage of the access network and / or increase the capacity of the access network.

[0042] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc., based on frequency / wavelength. In 5G NR, the two initial operating bands have been designated as frequency range names FR1 (410MHz-7.125GHz) and FR2 (24.25GHz-52.6GHz). Although a portion of FR1 is greater than 6GHz, FR1 is generally (interchangeably) referred to as the "below 6GHz" band in various documents and articles. Similar naming issues sometimes arise regarding FR2; although different from the Extremely High Frequency (EHF) band (30GHz-300GHz) designated as the "millimeter wave" band by the International Telecommunication Union (ITU), FR2 is generally (interchangeably) referred to as the "millimeter wave" band in documents and articles.

[0043] The frequencies between FR1 and FR2 are generally referred to as intermediate frequency (IF) bands. Recent 5G NR research has designated the operating bands used for these IF bands as the frequency range name FR3 (7.125GHz-24.25GHz). Bands falling within FR3 can inherit FR1 and / or FR2 characteristics, and thus can effectively extend the features of FR1 and / or FR2 to IF band frequencies. Furthermore, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6GHz. For example, three higher operating frequency bands have been designated as the frequency range names FR4a or FR4-1 (52.6GHz-71GHz), FR4 (52.6GHz-114.25GHz), and FR5 (114.25GHz-300GHz). Each of these higher frequency bands falls within the EHF band.

[0044] In light of the above, unless otherwise specifically stated, it should be understood that when the term "below 6 GHz" is used herein, it can broadly refer to frequencies that are less than 6 GHz, frequencies that are within FR1, or frequencies that may include intermediate frequency band frequencies. Furthermore, unless otherwise specifically stated, it should be understood that when the term "millimeter wave" is used herein, it can broadly refer to frequencies that may include intermediate frequency band frequencies, frequencies that are within FR2, FR4, FR4a, or FR4-1 and / or FR5, or frequencies that are within the EHF band.

[0045] Base station 102 (whether a small cell 102' or a large cell (e.g., a macro base station)) may include and / or be referred to as an eNB, gNodeB (gNB), or another type of base station. Some base stations (such as gNB 180) may operate in conventional sub-6 GHz spectrum, millimeter wave frequencies, and / or near-millimeter wave frequencies to communicate with UE 104. When gNB 180 operates in millimeter wave or near-millimeter wave frequencies, gNB 180 may be referred to as a millimeter wave base station. Millimeter wave base station 180 may utilize beamforming 182 with UE 104 to compensate for extremely high path loss and short range. Base station 180 and UE 104 may each include multiple antennas, such as antenna elements, antenna panels, and / or antenna arrays, to facilitate beamforming.

[0046] Base station 180 can transmit beamformed signals to UE 104 in one or more transmit directions 182'. UE 104 can receive beamformed signals from base station 180 in one or more receive directions 182'. UE 104 can also transmit beamformed signals to base station 180 in one or more transmit directions. Base station 180 can receive beamformed signals from UE 104 in one or more receive directions. Base station 180 / UE 104 can perform beam training to determine the optimal receive and transmit directions for each of base station 180 / UE 104. The transmit and receive directions for base station 180 can be the same or different. The transmit and receive directions for UE 104 can be the same or different.

[0047] EPC 160 may include Mobility Management Entity (MME) 162, other MMEs 164, Serving Gateway 166, Multimedia Broadcast Multicast Service (MBMS) Gateway 168, Broadcast Multicast Service Center (BM-SC) 170, and Packet Data Network (PDN) Gateway 172. MME 162 can communicate with Home Subscriber Server (HSS) 174. MME 162 is the control node that handles signaling between UE 104 and EPC 160. Typically, MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through Serving Gateway 166, which is itself connected to PDN Gateway 172. PDN Gateway 172 provides IP address allocation and other functions to the UE. PDN Gateway 172 and BM-SC 170 are connected to IP Service 176. IP Service 176 may include the Internet, intranet, IP Multimedia Subsystem (IMS), PS streaming service, and / or other IP services. The BM-SC 170 provides functions for MBMS user service provisioning and delivery. The BM-SC 170 can serve as an entry point for MBMS transmissions to content providers, authorize and initiate MBMS bearer services within a Public Land Mobile Network (PLMN), and schedule MBMS transmissions. The MBMS gateway 168 can distribute MBMS services to base stations 102 belonging to areas of a Multicast-Broadcast Single Frequency Network (MBSFN) that broadcasts specific services, and can be responsible for session management (start / stop) and collecting billing information related to eMBMS.

[0048] The core network 190 may include Access and Mobility Management Functions (AMF) 192, other AMFs 193, Session Management Functions (SMF) 194, and User Plane Functions (UPF) 195. AMF 192 can communicate with Unified Data Management (UDM) 196. AMF 192 is the control node that handles signaling between UE 104 and the core network 190. Typically, AMF 192 provides QoS flow and session management. All user Internet Protocol (IP) packets are transmitted via UPF 195. UPF 195 provides UE IP address allocation and other functions. UPF 195 connects to IP service 197. IP service 197 may include the Internet, intranet, IP Multimedia Subsystem (IMS), Packet Switched (PS) Streaming (PSS) service, and / or other IP services.

[0049] Base stations may include and / or be referred to as gNB, Node B, eNB, access point, base transceiver station, radio base station, radio transceiver, transceiver functional unit, basic service set (BSS), extended service set (ESS), transmit / receive point (TRP), or some other suitable term. Base station 102 provides UE 104 with access to EPC 160 or core network 190. Examples of UE 104 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radio units, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablet devices, smart devices, wearable devices, vehicles, electricity meters, air pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, or any other similarly functional devices. Some UE 104 devices may be referred to as IoT devices (e.g., parking meters, air pumps, ovens, vehicles, heart monitors, etc.). UE 104 may also be referred to as a station, mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. In some scenarios, the term UE may also apply to one or more accompanying devices, such as in a device constellation arrangement. One or more of these devices may jointly access the network and / or individually access the network.

[0050] Refer again Figure 1 In some aspects, UE 104 may include a joint DL / UL TCI state activation component 198, configured to: receive a MAC-CE activating the joint DL / UL TCI state; process the received MAC-CE activating the joint DL / UL TCI state; and communicate with the base station via DL and UL based on the activated joint DL / UL TCI state. In some aspects, base station 180 may include a joint DL / UL TCI state configuration / activation component 199, configured to: send a MAC-CE activating the joint DL / UL TCI state to the UE; and communicate with the base station via DL and UL based on the activated joint DL / UL TCI state. Although the following description may focus on 5G NR, the concepts described herein are applicable to other similar domains, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0051] Figure 2A This is a schematic diagram 200 showing an example of the first subframe within a 5G NR frame structure. Figure 2BThis is a schematic diagram 230 showing an example of a DL channel within a 5G NR subframe. Figure 2C This is a schematic diagram 250 showing an example of a second subframe within a 5G NR frame structure. Figure 2D This is a schematic diagram 280 illustrating an example of a UL channel within a 5G NR subframe. The 5G NR frame structure can be Frequency Division Duplex (FDD) (where, for a specific set of subcarriers (carrier system bandwidth), subframes within that set are dedicated to either DL or UL), or Time Division Duplex (TDD) (where, for a specific set of subcarriers (carrier system bandwidth), subframes within that set are dedicated to both DL and UL). In the process of... Figure 2A , 2C In the provided example, the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (most of which are DL), where D is DL, U is UL, and F is flexible between DL / UL, and subframe 3 is configured with slot format 1 (all of which are UL). Although subframes 3 and 4 are shown as having 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 all DL and all UL, respectively. Other slot formats 2-61 include a mixture of DL, UL, and flexible symbols. The UE is configured to have a slot format via the received Slot Format Indicator (SFI) (dynamically configured via DL Control Information (DCI) or semi-statically / statically configured via Radio Resource Control (RRC) signaling). It should be noted that the following description also applies to the 5G NR frame structure as TDD.

[0052] Figures 2A-2DThe frame structure is illustrated, and aspects of this disclosure are applicable to other wireless communication technologies that may have different frame structures and / or different channels. A frame (10 ms) can be divided into 10 equal-sized subframes (1 ms). Each subframe may include one or more time slots. Subframes may also include micro-time slots, which may include 7, 4, or 2 symbols. Each time slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended. For normal CP, each time slot may include 14 symbols, and for extended CP, each time slot may include 12 symbols. Symbols on the DL may be CP Orthogonal Frequency Division Multiplexing (OFDM) (CP-OFDM) symbols. Symbols on the UL may be CP-OFDM symbols (for high-throughput scenarios) or Discrete Fourier Transform (DFT) Extended OFDM (DFT-s-OFDM) symbols (also known as Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols) (for power-constrained scenarios; limited to single-stream transmission). The number of time slots within a subframe may be based on the CP and the numbering scheme. The digital scheme defines the subcarrier spacing (SCS) and, in effect, the symbol length / duration (which is equal to 1 / SCS).

[0053]

[0054] For a standard CP (14 symbols / slot), different digital schemes μ0 through 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For an extended CP, digital scheme 2 allows 4 slots per subframe. Accordingly, for both the standard CP and digital scheme μ, there are 14 symbols / slot and 2 slots per subframe. μ One time slot / subframe. The subcarrier spacing can be equal to 2. μ *15kHz, where μ is the digital scheme from 0 to 4. Therefore, digital scheme μ = 0 has a subcarrier spacing of 15kHz, and digital scheme μ = 4 has a subcarrier spacing of 240kHz. The symbol length / duration is inversely related to the subcarrier spacing. Figures 2A-2D Examples are provided for a standard frequency division multiplexing (CP) scheme with 14 symbols per slot and a digital scheme with 4 slots per subframe (μ=2). The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within a frame set, one or more distinct bandwidth portions (BWPs) of frequency division multiplexing can exist (see [link to relevant documentation]). Figure 2B Each BWP can have a specific digital scheme and CP (normal or extended).

[0055] A resource grid can be used to represent the frame structure. Each time slot includes a resource block (RB) (also known as a physical RB (PRB)), which consists of 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0056] like Figure 2A As shown, some of the REs carry reference (pilot) signals (RS) for the UE. The RS may include a demodulation RS (DM-RS) for channel estimation at the UE (indicated as R for a specific configuration, but other DM-RS configurations are possible) and a channel state information reference signal (CSI-RS). The RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and a phase tracking RS (PT-RS).

[0057] Figure 2B Examples of various DL channels within a subframe of a frame are shown. The Physical Downlink Control Channel (PDCCH) carries DCI within one or more Control Channel Elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE comprising six RE groups (REGs), each REG comprising 12 consecutive REs in the OFDM symbol of the RB. A PDCCH within a BWP can 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 PDCCH monitoring on the CORESET, where PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs can be located at larger and / or lower frequencies spanning the channel bandwidth. The Primary Synchronization Signal (PSS) can be within symbol 2 of a specific subframe of the frame. The PSS is used by UE 104 to determine subframe / symbol timing and physical layer identification. The Secondary Synchronization Signal (SSS) can be within symbol 4 of a specific subframe of the frame. The SSS is used by the UE to determine the Physical Layer Cell Identifier Group Number and radio frame timing. Based on the Physical Layer Identifier and 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 DM-RS. The Physical Broadcast Channel (PBCH), carrying the Master Information Block (MIB), can logically be grouped with the PSS and SSS to form a Synchronization Signal (SS) / PBCH block (also known as an SS block (SSB)). The MIB provides the number of RBs and the System Frame Number (SFN) in the system bandwidth. The Physical Downlink Shared Channel (PDSCH) carries user data, broadcast system information not transmitted via the PBCH (such as System Information Block (SIB)), and paging messages.

[0058] like Figure 2CAs shown, some REs in the REs carry DM-RS for channel estimation at the base station (indicated as R for a specific configuration, but other DM-RS configurations are possible). The UE can transmit 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 transmitted in the first one or two symbols before the PUSCH. The PUCCH DM-RS can be transmitted in different configurations depending on whether a short or long PUCCH is transmitted and depending on the specific PUCCH format used. The UE can transmit a Sounding Reference Signal (SRS). The SRS can be transmitted in the last symbol of a subframe. The SRS can have a comb structure, and the UE can transmit the SRS on one of the combs. The SRS can be used by the base station for channel quality estimation to enable frequency-dependent scheduling on the UL.

[0059] Figure 2D Examples of various UL channels within a subframe of a frame are shown. The PUCCH can be positioned as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), and hybrid automatic repeat request (HARQ) acknowledgment (ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACKs and / or negative ACKs (NACKs)). The PUCCH carries data and may also be used to carry buffer status reports (BSR), power headroom reports (PHR), and / or UCIs.

[0060] Figure 3This is a block diagram illustrating communication between base station 310 and UE 350 in the access network. In the DL, IP packets from EPC 160 can be provided to controller / processor 375. Controller / processor 375 implements Layer 3 and Layer 2 functions. Layer 3 includes the Radio Resource Control (RRC) layer, and Layer 2 includes the Serving Data Adaptation Protocol (SDAP) layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and Media Access Control (MAC) layer. The controller / processor 375 provides: RRC layer functions associated with: broadcasting system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-Radio Access Technology (RAT) mobility, 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 via ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with: mapping between logical channels and transport channels, multiplexing of MAC SDUs to transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel prioritization.

[0061] Transmit (TX) processor 316 and 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 of the transport channel, forward error correction (FEC) encoding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. TX processor 316 processes the mapping to 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), and M-order quadrature amplitude modulation (M-QAM)). The encoded and modulated symbols can then be divided into parallel streams. Each stream can then be mapped to OFDM subcarriers, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domains, and then combined using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time-domain OFDM symbol stream. The OFDM stream is spatially precoded to generate multiple spatial streams. Channel estimation from channel estimator 374 can be used to determine coding and modulation schemes and for spatial processing. The channel estimation can be derived from reference signals transmitted by UE 350 and / or channel condition feedback. Each spatial stream can then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX can use the corresponding spatial stream to modulate a radio frequency (RF) carrier for transmission.

[0062] At UE 350, each receiver 354RX receives signals via its corresponding antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and 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 stream destined for UE 350. If multiple spatial streams are destined for UE 350, they can be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then uses a Fast Fourier Transform (FFT) to transform the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal consists of a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, along with a reference signal, are recovered and demodulated by determining the most probable signal constellation point transmitted by base station 310. These soft decisions can be based on a channel estimate calculated by channel estimator 358. The soft decision is then decoded and deinterleaved to recover the data and control signals originally transmitted by base station 310 on the physical channel. The data and control signals are then provided to controller / processor 359, which implements layer 3 and layer 2 functions.

[0063] The controller / processor 359 may be associated with a memory 360 that stores program code and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport and logical channels to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0064] Similar to the functions described in conjunction with DL transmissions performed by base station 310, 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 via ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with: mapping between logical channels and transport channels, multiplexing of MAC SDUs to TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority processing, and logical channel prioritization.

[0065] The channel estimate derived by the channel estimator 358 from the reference signal or feedback transmitted by the base station 310 can be used by the TX processor 368 to select appropriate coding and modulation schemes, as well as to facilitate spatial processing. The spatial stream generated by the TX processor 368 can be provided to different antennas 352 via a separate transmitter 354TX. Each transmitter 354TX can use the corresponding spatial stream to modulate the RF carrier for transmission.

[0066] UL transmission at base station 310 is handled in a manner similar to that described for the receiver functions integrated at UE 350. Each receiver 318RX receives signals via its corresponding antenna 320. Each receiver 318RX recovers the information modulated onto the RF carrier and provides the information to the RX processor 370.

[0067] The controller / processor 375 may be associated with a memory 376 that stores program code and data. The memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport channel and the logical channel to recover IP packets from the UE 350. 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 operation.

[0068] At least one of the TX processor 368, RX processor 356, and controller / processor 359 can be configured to perform and Figure 1 Regarding aspects related to 198. At least one of the TX processor 316, RX processor 370, and controller / processor 375 can be configured to perform actions related to... Figure 1 All aspects related to 199.

[0069] In several aspects of wireless communication, enhancements to multi-beam operation (primarily targeting frequency range 2 (FR2), but also applicable to frequency range 1 (FR1)) may be beneficial. To enhance multi-beam operation, features can be identified and specified to facilitate more efficient (lower latency and overhead) DL / UL beam management, supporting higher intra-cell mobility and inter-cell mobility centered on Layer 1 (L1) / Layer 2 (L2) with / or a greater number of configured TCI states. Common beams for data and control transmission / reception for DL ​​and UL (particularly for in-band carrier aggregation (CA)) can be specified to provide a unified TCI framework for DL ​​and UL beam indication. Enhancements to the signaling mechanisms used for the above features can be provided to leverage greater use of dynamic control signaling (as opposed to RRC) to improve latency and efficiency. Furthermore, based on the UL beam indication with a unified TCI framework for UL fast panel selection, features can be identified and specified to facilitate UL beam selection for UEs equipped with multiple panels, taking into account the mitigation of UL coverage loss due to maximum permissible exposure (MPE).

[0070] In some respects, a unified TCI framework for DL ​​and UL beam indication can be beneficial. A primary use case could be signaling a common beam used for multiple DL and UL resources to save on both beam indication and overhead latency. The common beam indication can be signaled via a joint DL / UL TCI status. The activation of the joint DL / UL TCI status using MAC-CE is described below.

[0071] The joint DL / UL TCI status can jointly indicate the common beam or set of common beams that is typically applied to each of the multiple DL / UL resources, and can include a set of information.

[0072] In one aspect, each joint DL / UL TCI state in the joint DL / UL TCI state may include a TCI state identifier (ID). The TCI state ID may be in a dedicated ID space for common beam indication, or in a common ID space shared by common DL / UL beam indication, DL beam indication, and / or UL beam indication.

[0073] In another aspect, the joint DL / UL TCI status may include the IDs of one or more source reference signals (RSs), providing at least one DL quasi-co-location (QCL) assumption and / or UL spatial relation information. The one or more source RSs may include the serving cell ID and BWP ID of the one or more source RSs. If no serving cell ID exists, the serving cell in which the TCI status is configured is selected.

[0074] One or more source RSs may include various RS types, including dedicated demodulation reference signals (DM-RS) such as Synchronization Signal Block (SSB), CSI-RS, PRS, PRACH, PDSCH, PDCCH, PUCCH, or PUSCH.

[0075] One or more source RSs can provide various QCL assumptions and / or spatial relational information, including characteristics regarding delay, Doppler, and / or spatial Rx / Tx parameters. For example, QCLs can include: QCL type A, which includes Doppler frequency shift, Doppler spread, average delay, and delay spread; QCL type B, which includes Doppler frequency shift and Doppler spread; QCL type C, which includes Doppler frequency shift and average delay; and QCL type D, which includes spatial Rx parameters.

[0076] Based on the provided QCL / spatial assumptions, one or more source RSs can have different combinations. For example, a joint DL / UL TCI state may include the ID of a source RS for QCL-type A / B / C. In another example, three source RSs include a first RS for QCL-type A / B / C, a second RS for QCL-type D, and a third RS for spatial relation information.

[0077] In another aspect, each joint DL / UL TCI state in the joint DL / UL TCI state may include UL power control (PC) parameters that instruct the UE to configure UL transmission power. One or more power control parameters may include path loss reference signals (such as CSI-RS or other reference signals), nominal power parameters (such as P0 or other nominal power), path loss scaling factors (such as α or other scaling factors), closed-loop indexes, identifiers of power control groups (such as PC group IDs), or combinations thereof.

[0078] In another aspect, each joint DL / ULTCI state in the joint DL / UL TCI state may include ULTA parameters that instruct the UE to configure timing advance (TA) for UL transmission. One or more TA parameters may include TA values, identifiers of TA groups (such as TA group IDs), or combinations thereof.

[0079] In another aspect, each joint DL / UL TCI state in the joint DL / UL TCI state may include one or more parameters for codebook-based and / or non-codebook-based PUSCH transmissions. One or more codebook or non-codebook parameters may include: an SRS resource indicator (SRI); a precoding matrix indicator (PMI), such as a transport PMI (TPMI); a rank indicator (RI), such as a transport rank indicator (TRI); or a combination thereof.

[0080] In another aspect, each joint DL / UL TCI state in the joint DL / UL TCI state may include a UE panel ID or a similar ID. For example, the UE panel ID associated with the common DL / UL beam may include two separate panel IDs for DL ​​and UL, or a single panel ID for both DL and UL.

[0081] Figure 4 This is an example of MAC-CE 400 for wireless communication. For a single TRP scenario, the base station can provide a MAC-CE to the UE to activate one or more configured joint DL / UL TCI states. In some aspects, the DCI and / or MAC-CE can activate a subset of configured joint DL / UL TCI states, where each joint DL / UL TCI state can indicate a common beam for DL ​​reception / UL transmission. That is, a set of joint DL / UL states can be configured, and the base station can send a MAC-CE to the UE to instruct the UE to activate one or more subsets of configured joint DL / UL TCI states.

[0082] Activating MAC-CE 400 may include a bitmap indicating which configured joint DL / ULTCI status(s) are activated, as well as the serving cell ID and / or BWP ID to which MAC-CE 400 is applied. MAC-CE 400 may include a variable-size bitmap that includes any of the CORESET pool ID, serving cell ID, BWP ID, and TCI status fields. For example, the first octet of the MAC-CE bitmap may include any of the CORESET pool ID, serving cell ID, and BWP ID.

[0083] The CORESET pool ID indicates whether the mapping between the activated TCI state and the DCI code points is pre-configured or based on pre-configured rules. For example, the CORESET pool ID can be 1 bit long. The serving cell ID indicates the identifier of the serving cell applied by MAC-CE 400. For example, the serving cell ID field can be 5 bits long. The BWPID indicates the DL BWP applied by MAC-CE 400 as code points. For example, the BWP ID field can be 2 bits long.

[0084] The remaining eight bits can be a bitmap of the joint DL / ULTCI states, with each bit corresponding to each joint DL / ULTCI state. If a bit is set to 1, the corresponding joint DL / ULTCI state can be activated. For example, the base station can configure up to 128 joint DL / ULTCI states, and the bitmap can have a bit length of 128 bits. The MAC-CE 400 can select up to 8 bits, and therefore, the bitmap can have up to 8 bits set to 1 to activate the corresponding joint DL / ULTCI state.

[0085] An activated joint DL / UL TCI state can be applied to the following DL receive / UL transmission types or resources. That is, an activated joint DL / UL TCI state can indicate one or more DL receive / UL transmission types or resources to which the activated joint DL / UL TCI state can be applied. For example, DL receive types or resources may include PDCCH, PDSCH, CSI-RS, PRS, and / or SSB, and UL transmission types or resources may include PUCCH, PUSCH, SRS, and / or PRACH. The applicable DL receive / UL transmission types / resources for each activated joint DL / UL TCI state can be determined via various options. In one aspect, the applicable DL receive / UL transmission types / resources can be described in the specification (i.e., predetermined). For example, it can be predetermined that an activated joint DL / UL TCI state can be applied to all DL receive and UL transmission types / resources in a component carrier (CC) where MAC-CE is applied.

[0086] In one aspect, the applicable DL receive / UL transmission types and / or resources can be configured or indicated by the base station, for example, via RRC / MAC-CE / DCI. For example, the base station can indicate that an activated joint DL / UL TCI state can be applied to all PDCCH, PUCCH, and SRS in a CC where MAC-CE is applied.

[0087] In some aspects, if multiple joint DL / UL TCI states can be activated via MAC-CE, the DCI can further indicate the TCI code point mapped to an activated joint DL / UL TCI state. That is, the TCI code point field in the DCI can include TCI code point indices mapped to the activated joint DL / UL TCI states respectively. The base station can send a DCI with a TCI code point field to the UE, the TCI code point field including the TCI code point index mapped to the activated joint DL / UL TCI state among the multiple activated joint DL / UL TCI states.

[0088] A DCI carrying a TCI code point may or may not schedule any DL / UL reception transmissions. At least for a DCI that does not schedule any DL / UL reception transmissions, the UE can send an acknowledgment (ACK) to confirm reception of the DCI. That is, the UE may miss the transmission of a DCI carrying a TCI code point (or the index of the TCI code point), and therefore, to confirm successful transmission of the DCI, the UE can send an acknowledgment message back to the base station if the DCI does not schedule any DL / UL transmissions.

[0089] The indicated TCI code point can be used for DL ​​receive / UL transmissions scheduled by a DCI carrying the TCI code point (or an index of the TCI code point), or the applicable DL receive / UL transmissions can be indicated in the specification or by the base station, for example, via RRC / MAC-CE / DCI. That is, if the DCI indicating the TCI code point also schedules DL / UL transmissions, the TCI code point indicated by the DCI can be applied to the DL / UL transmissions scheduled by the DCI. For example, a DCI scheduling a PDSCH can also indicate a TCI code point mapped to an active joint DL / UL TCI state for both the scheduled PDSCH and the corresponding PUCCH for ACK / NACK. In other words, if the DCI indicating the TCI code point also schedules a PDSCH for DL ​​transmissions, the TCI code point indicated by the DCI can be applied to both the PDSCH and the corresponding PUCCH. For example, a DCI can indicate a TCI code point mapped to an active joint DL / UL TCI state for all UE-specific DL receive / UL transmissions. In other words, if the rules for the applicable DL / UL TCI states are predefined to correspond to all UE-specific DL reception / UL transmissions, then the activated joint DL / UL TCI states can be applied to all UE-specific DL reception / UL transmissions.

[0090] When TCI code points are carried in the DCI, the joint DL / UL TCI states activated by MAC-CE can be sequentially mapped to the candidate TCI code points to be indicated in the DCI. That is, the TCI states activated by MAC-CE can be sequentially mapped to each bit of the TCI code point associated with the index of the TCI code point. For example, MAC-CE can activate joint DL / UL TCI states ID#5, 7, and 9, which are sequentially mapped to candidate TCI code points with values ​​0, 1, and 2. In other words, MAC-CE 400 can activate joint DL / UL TCI states T5, T7, and T9, and they can be sequentially mapped to the TCI code points associated with indices 0, 1, and 2 of the TCI code points.

[0091] In some respects, MAC-CE activation for any configured TCI state can have various options in the presence of DL TCI state, UL TCI state, and combined DL / UL TCI state.

[0092] For the TCI state ID space, a single TCI state ID space can be a DL TCI state, a UL TCI state, or a combined DL / UL TCI state. A common TCI state ID space can be used for at least two or all of the DL TCI state, ULTCI state, and combined DL / ULTCI state.

[0093] To activate a MAC-CE, individual MAC-CEs can be applied to activate the DL TCI state, UL TCI state, and combined DL / ULTCI state separately. Individual MAC-CEs for the DL TCI state, UL TCI state, and combined DL / ULTCI state can work with individual TCI state ID spaces for the DL TCI state, UL TCI state, and combined DL / UL TCI state, respectively. A common MAC-CE can be used for at least two or all of the DL TCI state, UL TCI state, and combined DL / UL TCI state. A common MAC-CE can work with individual TCI state ID spaces for the DL TCI state, UL TCI state, and combined DL / UL TCI state, respectively, or with a common TCI state ID space for the DL TCI state, UL TCI state, and combined DL / UL TCI state. In the case of a common MAC-CE having separate TCI state ID spaces for at least two of the DL TCI state, UL TCI state, and combined DL / UL TCI state, the MAC-CE can utilize indicators to indicate the type of TCI state (i.e., DL TCI state, UL TCI state, or combined DL / UL TCI state), and therefore, the activated TCI state ID can relate to the ID space for the type of TCI state indicated by the indicator.

[0094] Furthermore, multiple subsets of the TCI state set can be used for DL ​​TCI states, UL TCI states, and combined DL / ULTCI states, respectively. That is, the first subset of the TCI state set can be DL LTCI states, the second subset of the TCI state set can be UL TCI states, and the third subset of the TCI state set can be DL / UL TCI states.

[0095] Figure 5 This is a call flow diagram 500 for wireless communication involving UE 502 and base station 504. Base station 504 can signal the common beam indication 502 to the UE via the joint DL / UL TCI state and activate the joint DL / UL TCI state using MAC-CE. UE 502 can receive the configuration of the common beam indication from base station 504 via the joint DL / UL TCI state and receive the activation of the joint DL / UL TCI state via MAC-CE.

[0096] At point 506, base station 504 can send a MAC-CE to UE 502 activating a subset of the configured joint DL and UL TCI states, each activated joint DL and UL TCI state indicating a common beam used for communication in the DL and UL. UE 502 can receive from base station 504 a MAC-CE activating a subset of the configured joint DL and UL TCI states, each activated joint DL and UL TCI state indicating a common beam used for communication in the DL and UL.

[0097] At point 508, base station 504 may send to UE 502 a configuration indicating the applicable DL / UL type or resource for the activated joint DL / UL TCI state. UE 502 may receive from base station 504 the configuration indicating the applicable DL / UL type or resource for the activated joint DL / UL TCI state. The applicable DL / UL type or resource may include one or more of PDCCH, PDSCH, CSI-RS, or PRS for DL ​​and one or more of PUCCH, PUSCH, SRS, or PRACH for UL. The configuration may be received via at least one of RRC signaling, MAC-CE, and / or DCI.

[0098] At point 510, base station 504 can send a DCI indicating the index of the TCI code point to UE 502, the index corresponding to one of the activated joint DL and UL TCI states. UE 502 can receive the DCI indicating the index of the TCI code point from base station 504, the index corresponding to one of the activated joint DL and UL TCI states.

[0099] At position 512, UE 502 can send an acknowledgment (ACK) to base station 504 to confirm the reception of DCI. Base station 504 can receive the acknowledgment confirming the reception of DCI from UE 502.

[0100] At point 514, base station 504 can send indications of DL resources and UL resources used for communication to UE 502. UE 502 can receive indications of DL resources and UL resources used for communication from base station 504. The indications can be received via RRC signaling, MAC-CE, or DCI.

[0101] At 516, UE 502 can determine the DL and UL resources used for communication for an active joint DL and UL TCI state corresponding to the index of the TCI code point indicated by the DCI. The DL and UL resources used for communication can be determined based on predefined rules or instructions received at 514.

[0102] At 518, UE 502 and base station 504 can communicate with each other via DL and UL based on the activated joint DL and UL TCI status.

[0103] Figure 6 This is a flowchart 600 of a wireless communication method. The method can be performed by a UE (e.g., UE 104 / 502; device 1602). The UE can receive the configuration of the common beam indication from the base station via the joint DL / UL TCI state and receive the activation of the joint DL / UL TCI state via MAC-CE.

[0104] At 602, the UE can receive from the base station a MAC-CE that activates a subset of the configured joint DL and UL TCI states, each activated joint DL and UL TCI state indicating a common beam used for communication in the DL and UL (e.g., as at 506). The MAC-CE may include a bitmap indicating which configured joint DL and UL TCI states are activated, and at least one of the serving cell ID associated with the base station or the BWP ID to which activation is applied. Each activated joint DL and UL TCI state may be associated with at least one of the PDCCH, PDSCH, CSI-RS, PRS, or SSB used for the DL and at least one of the PUCCH, PUSCH, SRS, or PRACH used for the UL. The joint DL and UL TCI states activated in the MAC-CE may be mapped to TCI code points using a sequential index. The ID of the configured joint DL and UL TCI state may be a non-unique TCI state ID. For example, the received MAC-CE may be associated with a joint DL and UL TCI state, but not with a DL TCI state or a UL TCI state. For another example, the received MAC-CE may be associated with at least one of the joint DL and UL TCI states and the DL TCI state or the UL TCI state, and the MAC-CE may indicate which subset of TCI states in the MAC-CE is the joint DL and UL TCI state, the DL TCI state, and the UL TCI state. The configured ID of the joint DL and UL TCI state may be a unique TCI state ID, and the received MAC-CE may be associated with at least one of the joint DL and UL TCI states and the DL TCI state or the UL TCI state. For example, at 506, UE 502 may receive from base station 504 a MAC-CE activating a subset of the configured joint DL and UL TCI states, each activated joint DL and UL TCI state indicating a common beam for communication in the DL and UL. Furthermore, 602 may be performed by activation component 1644.

[0105] At 604, the UE can receive from the base station a configuration indicating the applicable DL / UL type or resource for the activated joint DL / ULTCI state. The applicable DL / UL type or resource may include one or more of PDCCH, PDSCH, CSI-RS, or PRS for DL ​​and one or more of PUCCH, PUSCH, SRS, or PRACH for UL. That is, the UE can receive from the base station a configuration indicating which of PDCCH, PDSCH, CSI-RS, PRS, or SSB applies to each activated joint DL and ULTCI state, and which of PUCCH, PUSCH, SRS, or PRACH applies to each activated joint DL and ULTCI state (e.g., as at 508). This configuration may be received via one or more of RRC signaling, MAC-CE, and / or DCI. For example, at 508, UE 502 can receive from base station 504 a configuration indicating the applicable DL / UL type or resource for the activated joint DL / UL TCI state. Furthermore, 604 can be performed by configuration component 1640.

[0106] At 606, the UE can receive from the base station a DCI indicating an index of a TCI code point, the index corresponding to one of the activated joint DL and UL TCI states (e.g., as at 510). The received DCI may not schedule communication via DL or UL. The received DCI may schedule communication via DL or UL, and the communication via DL or UL scheduled by the DCI may be based on an activated DL and UL TCI state corresponding to the index of the TCI code point indicated by the DCI. For example, at 510, UE 502 can receive from base station 504 a DCI indicating an index of a TCI code point, the index corresponding to one of the activated joint DL and UL TCI states. Furthermore, 606 can be performed by activation component 1644.

[0107] At point 608, the UE can send an acknowledgment to the base station confirming receipt of the DCI (e.g., as at point 512). For example, at point 5XX, the UE 502 can send an acknowledgment to the base station confirming receipt of the DCI. Furthermore, point 608 can be performed by the ACK / NACK component 1642.

[0108] At 610, the UE can receive indications of DL resources and UL resources used for communication from the base station. That is, the UE can receive indications of DL resources and UL resources used for communication from the base station, and the DL resources and UL resources used for communication can be determined based on the received indications (e.g., as at 514). These indications can be received via RRC signaling, MAC-CE, or DCI. For example, at 514, UE 502 can receive indications of DL resources and UL resources used for communication from base station 504. Furthermore, 610 can be performed by activation component 1644.

[0109] At 612, the UE can determine the DL and UL resources used for communication for an active joint DL and UL TCI state corresponding to the index of the TCI code point indicated by the DCI (e.g., as at 516). The DL and UL resources used for communication can be determined based on predefined rules. The DL and UL resources used for communication can also be determined based on the indication received at 610. For example, at 5XX, UE 502 can determine the DL and UL resources used for communication for an active joint DL and UL TCI state corresponding to the index of the TCI code point indicated by the DCI. Furthermore, 612 can be performed by application component 1646.

[0110] At 614, the UE can communicate with the base station via DL and UL based on the activated joint DL and UL TCI state (e.g., as at 518). Communication with the base station via DL and UL can be via at least one of the serving cell associated with the serving cell ID or the BWP associated with the BWP ID at the base station. When the received DCI schedules communication via DL or UL, the communication via DL or UL scheduled by the DCI can be based on an activated DL and UL TCI state corresponding to the index of the TCI code point indicated by the DCI. For example, at 518, UE 502 and base station 504 can communicate with each other via DL and UL based on the activated joint DL and UL TCI state. Furthermore, 614 can be performed by application component 1646.

[0111] Figure 7 This is a flowchart 700 of a wireless communication method. The method can be performed by a UE (e.g., UE 104 / 502; device 1602). The UE can receive the configuration of the common beam indication from the base station via the joint DL / ULTCI state and receive the activation of the joint DL / ULTCI state via MAC-CE.

[0112] At 702, the UE can receive from the base station a MAC-CE that activates a subset of the configured joint DL and ULTCI states, each activated joint DL and ULTCI state indicating a common beam used for communication in the DL and UL (e.g., as at 506). The MAC-CE may include a bitmap indicating which configured joint DL and ULTCI states are activated, and at least one of the serving cell ID associated with the base station or the BWP ID to which activation is applied. Each activated joint DL and ULTCI state may be associated with at least one of the PDCCH, PDSCH, CSI-RS, PRS, or SSB used for the DL and at least one of the PUCCH, PUSCH, SRS, or PRACH used for the UL. The joint DL and UL TCI states activated in the MAC-CE may be mapped to TCI code points using a sequential index. The ID of the configured joint DL and ULTCI state may be a non-unique TCI state ID. For example, the received MAC-CE may be associated with a joint DL and UL TCI state, but not with a DLTCI state or a ULTCI state. For another example, the received MAC-CE may be associated with at least one of the joint DL and ULTCI states and the DLTCI state or the ULTCI state, and the MAC-CE may indicate which subset of TCI states in the MAC-CE is the joint DL and ULTCI state, the DLTCI state, and the UL TCI state. The configured ID of the joint DL and UL TCI state may be a unique TCI state ID, and the received MAC-CE may be associated with at least one of the joint DL and ULTCI states and the DL TCI state or the UL TCI state. For example, at 506, UE 502 may receive from base station 504 a MAC-CE activating a subset of the configured joint DL and ULTCI states, each activated joint DL and ULTCI state indicating a common beam used for communication in DL and UL. Furthermore, 702 may be performed by activation component 1644.

[0113] At 714, the UE can communicate with the base station via DL and UL based on the activated joint DL and UL TCI state (e.g., as at 518). Communication with the base station via DL and UL can be via at least one of the serving cell associated with the serving cell ID or the BWP associated with the BWP ID at the base station. When the received DCI schedules communication via DL or UL, the communication via DL or UL scheduled by the DCI can be based on an activated DL and UL TCI state corresponding to the index of the TCI code point indicated by the DCI. For example, at 518, UE 502 and base station 504 can communicate with each other via DL and UL based on the activated joint DL and UL TCI state. Furthermore, 714 can be performed by application component 1646.

[0114] Figure 8 This is a flowchart 800 of a wireless communication method. This method can be performed by a base station (e.g., base station 102 / 180 / 504; device 1702). The base station can signal the common beam indication to the UE via a joint DL / ULTCI state and activate the joint DL / ULTCI state using MAC-CE.

[0115] At 802, the base station may send a MAC-CE to the UE activating a subset of configured joint DL and UL TCI states, each activated joint DL and UL TCI state indicating a common beam used for communication in the DL and UL (e.g., as at 506). The MAC-CE may include a bitmap indicating which configured joint DL and UL TCI states are activated, and at least one of the serving cell ID associated with the base station or the BWP ID to which activation is applied. Each activated joint DL and UL TCI state may be associated with at least one of the PDCCH, PDSCH, CSI-RS, PRS, or SSB used for the DL and at least one of the PUCCH, PUSCH, SRS, or PRACH used for the UL. The joint DL and UL TCI states activated in the MAC-CE may be mapped to TCI code points using a sequential index. The ID of the configured joint DL and UL TCI state may be a non-unique TCI state ID. For example, a received MAC-CE may be associated with a joint DL and UL TCI state, but not with a DL TCI state or a UL TCI state. In another example, the received MAC-CE may be associated with at least one of the joint DL and ULTCI states and the DL TCI state or the UL TCI state, and the MAC-CE may indicate which subset of TCI states in the MAC-CE is the joint DL and UL TCI state, the DLTCI state, and the UL TCI state. The configured ID of the joint DL and ULTCI state may be a unique TCI state ID, and the received MAC-CE may be associated with at least one of the joint DL and ULTCI states and the DLTCI state or the ULTCI state. For example, at 506, base station 504 may send a MAC-CE to UE 502 activating a subset of the configured joint DL and ULTCI states, each activated joint DL and ULTCI state indicating a common beam used for communication in the DL and UL. Furthermore, 802 may be performed by activation component 1744.

[0116] At 804, the base station may send a configuration to the UE indicating the applicable DL / UL type or resource for the activated joint DL / ULTCI state. The applicable DL / UL type or resource may include one or more of PDCCH, PDSCH, CSI-RS, or PRS for DL ​​and one or more of PUCCH, PUSCH, SRS, or PRACH for UL. That is, the base station may send a configuration to the UE indicating which of PDCCH, PDSCH, CSI-RS, PRS, or SSB applies to each activated joint DL and ULTCI state, and which of PUCCH, PUSCH, SRS, or PRACH applies to each activated joint DL and ULTCI state (e.g., as at 508). This configuration may be received via at least one of RRC signaling, MAC-CE, or DCI. For example, at 508, base station 504 can send to UE 502 a configuration indicating the applicable DL / UL type or resource for the activated joint DL / ULTCI state. Furthermore, 804 can be performed by configuration component 1740.

[0117] At 806, the base station can send a DCI indicating an index of a TCI code point to the UE, the index corresponding to one of the active joint DL and UL TCI states (e.g., as at 510). The sent DCI may not schedule communication via DL or UL. The received DCI may schedule communication via DL or UL, and the communication via DL or UL scheduled by the DCI may be based on an active DL and ULTCI state corresponding to the index of the TCI code point indicated by the DCI. For example, at 510, base station 504 can send a DCI indicating an index of a TCI code point to the UE 502, the index corresponding to one of the active joint DL and ULTCI states. Furthermore, 806 can be performed by configuration component 1740.

[0118] At point 808, the base station can receive confirmation of receipt of the DCI from the UE (e.g., as at point 512). For example, at point 512, base station 504 can receive confirmation of receipt of the DCI from UE 502. Furthermore, point 808 can be performed by ACK / NACK component 1742.

[0119] At point 810, the base station can send an indication to the UE of DL resources and UL resources used for communication, wherein the UL resources and DL resources used for communication can be determined based on the received indication (e.g., as at point 514). The indication can be sent via one of RRC signaling, MAC-CE, or DCI. For example, at point 514, base station 504 can send an indication of DL resources and UL resources used for communication to UE 502. Furthermore, point 810 can be performed by configuration component 1740.

[0120] At 812, the base station can communicate with the UE via DL and UL based on the activated joint DL and UL TCI state (e.g., as at 518). Communication with the base station via DL and UL can be via at least one of the serving cell associated with the serving cell ID or the BWP associated with the BWP ID at the base station. When the received DCI schedules communication via DL or UL, the communication via DL or UL scheduled by the DCI can be based on an activated DL and UL TCI state corresponding to the index of the TCI code point indicated by the DCI. For example, at 518, base station 504 and UE 502 can communicate with each other via DL and UL based on the activated joint DL and UL TCI state. Furthermore, 812 can be performed by application component 1746.

[0121] Figure 9 This is a flowchart 900 of a wireless communication method. The method can be performed by a base station (e.g., base station 102 / 180 / 504; device 1702). The base station can signal the common beam indication to the UE via a joint DL / ULTCI state and activate the joint DL / ULTCI state using MAC-CE.

[0122] At 902, the base station may send a MAC-CE to the UE activating a subset of configured joint DL and ULTCI states, each activated joint DL and ULTCI state indicating a common beam used for communication in the DL and UL (e.g., as at 506). The MAC-CE may include a bitmap indicating which configured joint DL and ULTCI states are activated, and at least one of the serving cell ID associated with the base station or the BWP ID to which activation is applied. Each activated joint DL and UL TCI state may be associated with at least one of the PDCCH, PDSCH, CSI-RS, PRS, or SSB used for the DL and at least one of the PUCCH, PUSCH, SRS, or PRACH used for the UL. The joint DL and UL TCI states activated in the MAC-CE may be mapped to TCI code points using a sequential index. The ID of the configured joint DL and UL TCI state may be a non-unique TCI state ID. For example, a received MAC-CE may be associated with a joint DL and UL TCI state, but not with a DL TCI state or a UL TCI state. In another example, the received MAC-CE may be associated with at least one of the joint DL and ULTCI states and the DL TCI state or the UL TCI state, and the MAC-CE may indicate which subset of TCI states in the MAC-CE is the joint DL and ULTCI state, the DL TCI state, and the UL TCI state. The configured ID of the joint DL and UL TCI state may be a unique TCI state ID, and the received MAC-CE may be associated with at least one of the joint DL and ULTCI states and the DL TCI state or the UL TCI state. For example, at 506, base station 504 may send a MAC-CE to UE 502 activating a subset of the configured joint DL and ULTCI states, each activated joint DL and UL TCI state indicating a common beam used for communication in the DL and UL. Furthermore, 902 may be performed by activation component 1744.

[0123] At 912, the base station can communicate with the UE via DL and UL based on the activated joint DL and ULTCI state (e.g., as at 518). Communication with the base station via DL and UL can be via at least one of the serving cell associated with the serving cell ID or the BWP associated with the BWP ID at the base station. When the received DCI schedules communication via DL or UL, the communication via DL or UL scheduled by the DCI can be based on an activated DL and UL TCI state corresponding to the index of the TCI code point indicated by the DCI. For example, at 518, base station 504 and UE 502 can communicate with each other via DL and UL based on the activated joint DL and ULTCI state. Furthermore, 912 can be performed by application component 1746.

[0124] In wireless communication, signaling a common beam for multiple DL and UL resources can save both beam indication overhead and latency. Common beam indication can be signaled via a joint DL / UL TCI state. Cross-CC activation of the joint DL / UL TCI state can be similar to cross-CC activation of the DL TCI state.

[0125] The aspects presented herein provide enhancements to multi-beam operation, such as, but not limited to, targeting frequency range 2 (FR2) while also being applicable to frequency range 1 (FR1). These aspects can facilitate more efficient DL / UL beam management (e.g., lower latency and overhead) to support higher intra-cell mobility and inter-cell mobility centered on Layer 1 / Layer 2, and / or a greater number of configured TCI states. For example, the aspects can enable the configuration and / or activation of common beams for data and control transmission / reception for DL ​​and UL (particularly for in-band carrier aggregation (CA)), a unified TCI framework for DL ​​and UL beam indication, or enhancements to signaling mechanisms to leverage greater use of dynamic control signaling (e.g., compared to RRC signaling) to improve latency and efficiency. The aspects can also facilitate UL beam selection for UEs equipped with multiple panels based on UL beam indication with a unified TCI framework for fast UL panel selection, taking into account the mitigation of UL coverage loss due to maximum permissible exposure (MPE).

[0126] The aspects presented in this document provide a configuration that allows a UE to activate the same joint TCI state ID or the ID of a single component of a joint TCI state ID across multiple CCs when activating a joint DL / UL TCI state for a CC. The joint DL / UL TCI state can be activated for a CC in the MAC-CE and / or in the DCI.

[0127] Figure 10A Example 1000 shows an example MAC-CE 1002 that can be used to activate the joint DL / ULTCI status and DL / UL communication. Figure 10A The example shown is just one example of a MAC-CE that can be used to activate the joint DL / UL TCI state. In other examples, MAC-CEs with different content can also be used to activate the joint DL / UL TCI state, or different messages (such as DCI) can be used to activate the joint DL / UL TCI state. For example, activation could include... Figure 4 The activation MAC-CE 400 includes a bitmap indicating which configured joint DL / UL TCI states are active, and the serving cell ID and / or BWP ID to which the activation MAC-CE applies. The bitmap for the joint DL / UL TCI states may include each bit corresponding to each joint DL / UL TCI state. If a bit is set to 1, the corresponding joint DL / UL TCI state can be activated. For example, the base station can configure up to 128 joint DL / UL TCI states, and the bitmap can have a bit length of 128 bits. The MAC-CE can be selected up to 8 bits, and therefore, the bitmap can have up to 8 bits set to 1 to activate the corresponding joint DL / UL TCI state. The UE can also receive from the base station a DCI indicating an index of the TCI code point, the index corresponding to one of the active joint DL and UL TCI states.

[0128] MAC-CE 1002 can be a UE-specific MAC-CE for TCI state activation / deactivation, which is sent from the base station to the UE on the PDSCH. TCI state activation / deactivation for the UE-specific MAC-CE is identified via the MAC PDU sub-header. MAC-CE 1002 can have a variable-size bitmap, which includes the serving cell ID field, BWP ID field, and C... i Fields, TCI status ID i,j Fields and Reserved (R) fields. In the case of carrier aggregation (CA), the Serving Cell ID can indicate the identifier of the serving cell to which MAC-CE 1002 is applied. MAC-CE 1002 can activate the TCI state for any of the data channels (such as PDSCH, PUSCH) or control channels (such as control resource sets (CORESET), PUCCH) or RS signals (such as CSI-RS and SRS) for the UE. For example, the field length can be 5 bits. The BWP ID indicates the DLBWP applied by MAC-CE 1002 as a code point. For example, the BWP ID field length can be 2 bits. C iThis field indicates whether there exists a TCI state ID for the i-th TCI code point (i = 0, ..., N). i,2 An eight-bit byte. If this field is set to "1", then a TCI status ID is present. i,2 The eight-bit byte. If this field is set to "0", there is no TCI status ID. i,2 Eight-bit bytes. TCI Status ID i,j The field indicates the TCI status, where i is the index of the code point, and the TCI status ID is... i,j This represents the j-th TCI state indicated by the i-th code point. The TCI state is mapped to the TCI code point by having the TCI state ID. i,j The order of the field is determined by its position among all TCI code points in the field set, i.e., it has a TCI status ID. 0,1 and TCI status ID 0,2 The first TCI code point is mapped to code point value 0, which has a TCI state ID. 1,1 and TCI status ID 1,2 The second TCI code point is mapped to code point value 1, and so on. Based on C i Field indication, TCI status ID i,2 This can be optional. The maximum number of activated TCI code points can be 8 (correspondingly, N ≤ 7), and the maximum number of TCI states mapped to TCI code points can be 2. In one configuration, the maximum number of TCI states mapped to TCI code points can be greater than 2. When the number of TCI states mapped to TCI code points is M > 2 (TCI state IDs...), this is considered an optional feature. i,m When m = 1, ..., M, multiple M-1C values ​​can exist for a TCI code point. i The fields indicate whether a TCI status ID exists. i,m Each of them, where m = 2, ..., M. The R field is a reserved bit that can be set to "0".

[0129] In the case of multiple TRPs based on a single DCI, a TRP can simultaneously schedule DL reception or UL transmission with each of the multiple TRPs by sending a single scheduling DCI. In this case, the corresponding activation MAC-CE can activate at least one set of at least one joint DL / UL TCI states. At least in the case of a single activated set, each activated joint DL / UL TCI state can be sequentially applied to the DL reception or UL transmission associated with each of the multiple scheduled TRPs. For example, if the MAC-CE activates set 0 with two joint DL / UL TCI states, the two joint TCI states are mapped one-to-one to the two TRPs scheduled by all scheduling DCIs, where the channel type or resource for the DL reception or UL transmission of each scheduled TRP is dynamically indicated in each scheduling DCI. The channel type or resources used for DL ​​reception associated with a TRP can be, for example, PDSCH, PDCCH, COREST, or CSI-RS, and the channel type and resources used for UL transmission associated with a TRP can be, for example, PUSCH, PUCCH, SRS, or PRACH. Therefore, each scheduling DCI may not have a TCI code point field and may not need to specify the joint TCI state used for the channel type or resources of DL reception or UL transmission for each scheduled TRP. The resources used for DL ​​reception or UL transmission with multiple scheduled TRPs can be frequency division multiplexing (FDM), time division multiplexing (TDM), or space division multiplexing (SDM), which can be dynamically indicated in each scheduling DCI. For example, a first scheduling DCI schedules two FDM PDSCHs and two TDM PUCCHs associated with two TRPs, and a second scheduling DCI schedules two TDM PUSCHs associated with two TRPs. For two scheduling DCIs, the two joint TCI states in set 0 activated by MAC-CE can be applied to the resources allocated for DL ​​reception or UL transmission associated with the two TRPs, respectively. For example, a first joint TCI state can be applied to the first PDSCH of the two FDM PDSCHs, the first PUCCH of the two TDM PUCCHs, and the first PUSCH of the two TDM PUSCHs; similarly, a second joint TCI state can be applied to the second PDSCH of the two FDM PDSCHs, the second PUCCH of the two TDM PUCCHs, and the second PUSCH of the two TDM PUSCHs. The mapping between the joint TCI states and the resources associated with each TRP for DL ​​reception or UL transmission can be in the specification (i.e., predetermined) or dynamically determined by the base station via RRC / MAC-CE / DCI.

[0130] If MAC-CE activates multiple joint TCI state sets (e.g., N+1 sets and N>0), the DCI can further indicate a TCI code point mapped to one of the multiple joint TCI state sets. In a first configuration, the indicated TCI code point can be used for resources of DL receive or UL transmission scheduled by the same DCI indicating the TCI code point. For example, the first / second joint TCI state can be applied to the first / second PDSCH and the first / second PUCCH scheduled by that DCI, respectively. In a second configuration, the indicated TCI code point can be used for DL ​​receive or UL transmission scheduled by all following scheduling DCIs. For example, the first DCI can indicate a TCI code point mapped to a set of first and second joint TCI states, and the first / second joint TCI state can be applied to resources of DL receive or UL transmission for the first / second TRP scheduled by all scheduling DCIs following the first DCI. Within a plurality of TCI code points corresponding to a plurality of activated joint DL / UL TCI state sets, a TCI code point (e.g., a TCI code point with the lowest / highest code point ID) can be defined to indicate the default common beam set (at least when no DCI indicates a TCI code point).

[0131] If a joint DL / UL TCI state is activated for a component carrier (CC), the same joint TCI state ID or the IDs of individual components within a joint TCI state ID can be activated across multiple CCs. Therefore, a base station can activate a joint DL / UL TCI state across multiple CCs by sending an indication to the UE for activating a joint DL / UL TCI state for one CC. A UE receiving an indication for activating a joint DL / UL TCI state for a single CC can apply the activation of the joint DL / UL TCI state to multiple CCs, for example, multiple CCs associated with a single CC. A joint DL / UL TCI state can be activated via an indication in the MAC-CE or DCI, which also indicates the CC / BWPID to be applied to the activated joint TCI state. If the applied CC ID belongs to a configured list of CCs, the activated joint TCI state ID or the ID of an individual component in the MAC-CE or DCI can be applied to each CC in the CC list. As a first example, the same joint DL / UL TCI state ID can be applied to all BWPs for each CC in the CC list. As another example, the same joint DL / UL TCI state ID can be applied to the active DL / UL BWP for each CC in the CC list. At least one CC list can exist, configured via RRC, for cross-CC activation of the joint DL / UL TCI state. In the first example, the CC list can be dedicated to the joint DL / UL TCI state. In the second example, the base station and UE can reuse the CC list for cross-CC activation of either the DL TCI state or the ULTCI state. In addition to the joint TCI state ID, the MAC-CE or DCI activating the joint DL / UL TCI state can include IDs for the individual components used for cross-CC activation. For example, the MAC-CE or DCI can indicate the ID of the source reference signal that provides various DL quasi-co-location (QCL) assumptions and / or UL spatial relation information. QCL assumptions can include, for example, Doppler shift, Doppler spread, average delay, delay spread, spatial receive, or spatial transmit parameters. MAC-CE or DCI can indicate UL power control parameters, which include one or more of the following: path loss reference signal (e.g., CSI-RS or other reference signal), nominal power parameter (e.g., P0 or other nominal power), path loss scaling factor (e.g., α or other scaling factor), closed-loop index (e.g., i0 or i1), power control group identifier (e.g., PC group ID), or a combination thereof. MAC-CE or DCI can indicate UL timing advance parameters, which include one or more of timing advance (TA) group ID and / or TA value. MAC-CE or DCI can indicate UE panel ID or similar ID, such as antenna port group ID, beam group ID, etc.

[0132] Figure 10B Example 1010 illustrates a configured list of CCs for cross-CC activation. The configured list of CCs can be configured via RRC signaling, which may include serving cells (e.g., CC0, CC1, CC2). In some instances, the UE may receive MAC-CE0, which updates one or more joint DL / ULTCI states in CC0 by indicating one or more joint DL / UL TCI state IDs within MAC-CE0. Furthermore, MAC-CE0 may contain an index for CC0, which may indicate a serving cell intended to receive updates. In response to the reception of MAC-CE0, the UE may apply MAC-CE0 to CC0 by activating the indicated joint DL / UL TCI state in CC0. The updated / activated joint DL / ULTCI state for CC0 corresponds to a joint DL / UL TCI state configured for CC0 with the same joint DL / UL TCI state ID indicated by MAC-CE0. In some instances, the UE may determine that CC0 belongs to the CC list, allowing the UE to apply the same MAC-CE0 to other CCs within the CC list. Because MAC-CE0 indicates one or more joint DL / UL TCI status IDs, the TCI status can be applied to each CC in the CC list. For each CC in the CC list, the joint DL / UL TCI status configured for that CC (which has the same TCI status ID as indicated by MAC-CE0) is activated / updated. In some aspects, the same joint DL / UL TCI status ID can be applied to all BWPs for each CC in the CC list. In some aspects, the same joint DL / UL TCI status ID can be applied to the active DL / UL BWP for each CC in the CC list. At least one CC list can exist, configured via RRC, for cross-CC activation of the joint DL / UL TCI status. In some aspects, the list can be dedicated to the joint DL / UL TCI status. In some aspects, the list can be reused for other CC lists, such as for cross-CC activation of the DL or UL TCI status.

[0133] Figure 11This is a call flow diagram 1100 of the signaling between UE 1102 and base station 1104 (including activation of the joint DL and UL TCI states across multiple CCs). Base station 1104 can be configured to provide at least one cell. The base station can communicate with UE 1102 using a single Transmit / Receive Point (TRP) or multiple TRPs. If base station 1104 uses multiple TRPs, communication with multiple TRPs can be based on a single DCI or can be based on multiple DCIs. For example, if multiple TRPs are used in communication, the base station can use a single DCI to schedule transmissions or receptions associated with different TRPs, or it can use different DCIs to schedule transmissions or receptions associated with different TRPs. UE 1102 can be configured to communicate with base station 1104. For example, in Figure 1 In this context, base station 1104 may correspond to base station 102 / 180, and therefore, a cell may include a geographical coverage area 110 in which communication coverage is provided and / or a small cell 102' having coverage area 110'. Furthermore, UE 1102 may correspond to at least UE 104. In another example, in Figure 3 In this context, base station 1104 can correspond to base station 310, and UE 1102 can correspond to UE 350.

[0134] As shown at 1106, base station 1104 can configure a CC list including multiple CCs. In some aspects, the CC list may include a dedicated CC list for cross-CC activation of the joint DL and UL TCI states. In some aspects, the CC list may be used for cross-CC activation of the DLTCI state or the ULTCI state. At 1108, the base station can send the CC list configuration to UE 1102. In some examples, the base station can configure more than one CC list for UE 1102. The base station can configure the CC list in the RRC signaling to UE 1102.

[0135] At 1110, base station 1104 can configure one or more joint DL and ULTCI states for UE 1102. The joint DL and ULTCI states can each indicate parameters (such as beamforming) used for downlink and uplink communication with base station 1104. For example, the joint DL and ULTCI states can indicate parameters based on the source reference signal. The base station can send the configuration of the joint DL and ULTCI states to UE 1102, for example, in RRC signaling.

[0136] As shown at 1111, base station 1104 can transmit activation of at least one of the configured joint DL and UL TCI states for a CC included in the CC list, to activate the joint DL and UL TCI state for each CC in the plurality of CCs included in the list. Similarly, base station 1104 can instruct deactivation of the joint DL and UL TCI states. The base station can transmit activation / deactivation of the joint DL and UL TCI states to UE 1102 for a CC included in the CC list (e.g., for a single CC). UE 1102 can receive activation of the joint DL and UL TCI states for a CC included in the CC list from base station 1104. The joint DL and UL TCI states can indicate a common beam for communication in the DL and UL. In some aspects, activation of the joint DL and UL TCI states for a CC can be transmitted in one or more of the MAC-CE or DCI. For example, the set of combined DL and ULTCI states can be configured via RRC, and the combined DL and ULTCI states from the configured set can then be activated in more dynamic signaling (e.g., MAC-CE or DCI). The MAC-CE or DCI can indicate a CC or BWP ID for activating the combined DL and ULTCI states. The UE can apply the activation of the combined DL and ULTCI states to each CC in a CC list configured at 1108 that includes the CCs indicated in the MAC-CE / DCI for activating the TCI states. Each CC can have multiple BWPs, for example, up to four BWPs. In some aspects, activation can be applied to each BWP of each of the multiple CCs (e.g., each CC in a CC list that includes the CCs indicated in the MAC-CE / DCI). For example, activation can include... Figure 4 The activation MAC-CE 400 includes a bitmap indicating which configured joint DL / UL TCI states are activated, and the serving cell ID and / or BWPID to which the activation MAC-CE applies. The bitmap of joint DL / UL TCI states may include each bit corresponding to each joint DL / UL TCI state. If a bit is set to 1, the corresponding joint DL / UL TCI state can be activated. For example, the base station can configure up to 128 joint DL / UL TCI states, and the bitmap can have a bit length of 128 bits. The MAC-CE can select up to 8 bits, and therefore, the bitmap can have up to 8 bits set to 1 to activate the corresponding joint DL / UL TCI state. UE1102 can also receive from base station 1104 a DCI indicating an index of a TCI code point, the index corresponding to one of the activated joint DL and UL TCI states.

[0137] In some aspects, activation 1111 can activate the joint DL and ULTCI states for the active BWP of each of multiple CCs, for example, rather than for each BWP of each of these CCs. The active BWP can be a downlink BWP or an uplink BWP. The base station can send activation 1111 for the joint DL and ULTCI states in a message, which can indicate a joint TCI state ID and the IDs of one or more components of that joint TCI state ID. In some aspects, one or more components of the joint TCI state ID include one or more of the following: reference signal ID, uplink power control parameters, uplink timing advance parameters, UE panel ID, antenna port ID, or beamgroup ID.

[0138] In some aspects, for example, as shown at 1108, base station 1104 may transmit a configuration of a CC list for cross-CC activation of the combined DL and UL TCI states. Base station 1104 may transmit the configuration of the CC list for cross-CC activation of the combined DL and UL TCI states to UE 1102. UE 1102 may receive the configuration of the CC list for cross-CC activation of the combined DL and UL TCI states from base station 1104. UE 1102 may apply the combined DL and UL TCI states to each CC included in the CC list. The CC list may include a dedicated CC list for cross-CC activation of the combined DL and UL TCI states. The CC list may be used for cross-CC activation of either the DL TCI state or the UL TCI state.

[0139] As shown at 1112, UE 1102 can apply the combined DL and ULTCI states to multiple CCs. The UE can apply the combined DL and ULTCI states to multiple CCs in response to receiving activation of the combined DL and ULTCI states for a CC. UE 1102 and base station 1104 can exchange downlink and / or uplink communication 1114 based on the activation of the combined DL / ULTCI states. Downlink and / or uplink communication can be exchanged on multiple CCs based on the activated combined DL / ULTCCI states 1114.

[0140] Figure 12This is a flowchart 1200 of a wireless communication method. The method can be performed by a UE or a component of a UE (e.g., UE 104, 502; device 1602; cellular baseband processor 1604, which may include memory 360, and may be the entire UE 350 or a component of UE 350, such as TX processor 368, RX processor 356, and / or controller / processor 359). One or more of the operations shown can be omitted, interchanged, or occur simultaneously. This method allows the UE to activate the same joint TCI state ID or the ID of a single component of that joint TCI state ID across multiple CCs when activating a joint DL / UL TCI state for a CC.

[0141] In some aspects, at 1202, the UE can receive configuration of a CC list for cross-CC activation of the combined DL and ULTCI states. For example, at 1108, the UE 1102 can receive the CC list configuration from base station 1104. Furthermore, 1202 can be performed by configuration component 1640 of device 1602. In some examples, the base station can configure more than one CC list for the UE, and the base station can configure the CC list in RRC signaling to the UE. The UE can apply the combined DL and ULTCI states to each CC included in the CC list. The CC list may include a dedicated CC list for cross-CC activation of the combined DL and ULTCI states. The CC list can be used for cross-CC activation of either the DL / TCI state or the ULTCI state.

[0142] At 1203, the UE can receive configurations for one or more joint DL and ULTCI states for the base station. The joint DL and ULTCI states can each indicate parameters (such as beamforming) used for downlink and uplink communication with the base station. For example, the joint DL and ULTCI states can indicate parameters based on the source reference signal. The base station can send the configurations of the joint DL and ULTCI states to the UE in RRC signaling. For example, at 1110, UE 1102 can receive configurations of one or more joint DL and ULTCI states from base station 1104. Furthermore, 1203 can be performed by the configuration component 1640 of device 1602.

[0143] At 1204, the UE can receive activation of the joint DL and UL TCI states for a CC. For example, at 1111, the UE 1102 can receive activation of at least one joint DL and UL TCI state for a CC included in the CC list, in a configured joint DL and UL TCI state, to activate the joint DL and UL TCI state for each CC in the plurality of CCs included in the list. Furthermore, 1204 can be performed by the activation component 1644 of the device 1602. The UE can receive activation of the joint DL and UL TCI states for a CC from the base station. The joint DL and UL TCI states can indicate a common beam for communication in the DL and UL. In some aspects, activation of the joint DL and UL TCI states for a CC can be received in one or more of the MAC-CE or DCI. The MAC-CE or DCI can indicate the CC or BWP ID for which the joint DL and UL TCI states are activated. In some aspects, a CC can be associated with a list of multiple CCs. The UE can apply the joint DL and ULTCI states to each CC in a list of multiple CCs in response to receiving activation of the joint DL and ULTCI states for a CC. In some aspects, the UE can apply the joint DL and ULTCI states to each BWP of each CC in the multiple CCs. In some aspects, the UE can apply the joint DL and ULTCI states to the active BWP of each CC in the multiple CCs. The active BWP can be a downlink BWP or an uplink BWP. In some aspects, the UE can receive activation of the joint DL and ULTCI states in a message indicating a joint TCI state ID and the ID of one or more components of the joint TCI state ID. One or more components of the joint TCI state ID include one or more of the following: reference signal ID, uplink power control parameters, uplink timing advance parameters, UE panel ID, antenna port ID, or beamgroup ID. Similarly, base station 1104 can instruct the deactivation of the combined DL and ULTCI states, and the base station can send to UE 1102 the activation / deactivation of the combined DL and ULTCI states for CCs included in the CC list (e.g., for a single CC).

[0144] At 1208, the UE can apply the combined DL and ULTCI states to multiple CCs. The UE can apply the combined DL and ULTCI states to multiple CCs in response to receiving activation of the combined DL and ULTCI states for a CC. For example, at 1112, UE 1102 can apply the combined DL and ULTCI states to multiple CCs. Furthermore, 1208 can be performed by the application component 1646 of device 1602. The UE can apply the combined DL and ULTCI states to multiple CCs in response to receiving activation of the combined DL and ULTCI states for a CC.

[0145] At 1210, the UE can transmit / receive downlink and / or uplink communication based on the activation of the joint DL / UL TCI state. Downlink and / or uplink communication can be exchanged on multiple CCs based on the activated joint DL / UL TCI state. For example, at 1114, UE 1102 and base station 1104 can exchange downlink and / or uplink communication based on the activation of the joint DL / UL TCI state. Furthermore, 1210 can be performed by application component 1646 of device 1602.

[0146] Figure 13 This is a flowchart 1300 of a wireless communication method. The method can be performed by a UE or a component of a UE (e.g., UE 104, 502; device 1602; cellular baseband processor 1604, which may include memory 360, and may be the entire UE 350 or components of UE 350, such as TX processor 368, RX processor 356, and / or controller / processor 359). One or more of the operations shown can be omitted, interchanged, or occur simultaneously. This method allows the UE to activate the same joint TCI state ID or the ID of a single component of that joint TCI state ID across multiple CCs when activating a joint DL / UL TCI state for a CC.

[0147] At 1304, the UE can receive activation of the joint DL and ULTCI states for a CC. For example, at 1111, UE 1102 can receive activation of at least one joint DL and ULTCI state for a CC included in the CC list from the configured joint DL and ULTCI states, to activate the joint DL and ULTCI states for each CC in the plurality of CCs included in the list. Furthermore, 1304 can be performed by the activation component 1644 of device 1602. The UE can receive activation of the joint DL and ULTCI states for a CC from the base station. The joint DL and ULTCI states can indicate a common beam for communication in the DL and UL. In some aspects, activation of the joint DL and ULTCI states for a CC can be received in one or more of the MAC-CE or DCI. The MAC-CE or DCI can indicate the CC or BWP ID for which the joint DL and ULTCI states are activated. In some aspects, a CC can be associated with a list of multiple CCs. The UE can apply the joint DL and ULTCI states to each CC in a list of multiple CCs in response to receiving activation of the joint DL and ULTCI states for a CC. In some aspects, the UE can apply the joint DL and ULTCI states to each BWP of each CC in the multiple CCs. In some aspects, the UE can apply the joint DL and ULTCI states to the active BWP of each CC in the multiple CCs. The active BWP can be a downlink BWP or an uplink BWP. In some aspects, the UE can receive activation of the joint DL and ULTCI states in a message indicating a joint TCI state ID and the ID of one or more components of the joint TCI state ID. One or more components of the joint TCI state ID include one or more of the following: reference signal ID, uplink power control parameters, uplink timing advance parameters, UE panel ID, antenna port ID, or beamgroup ID. Similarly, base station 1104 can instruct the deactivation of the combined DL and ULTCI states, and the base station can send to UE 1102 the activation / deactivation of the combined DL and ULTCI states for CCs included in the CC list (e.g., for a single CC).

[0148] At 1308, the UE can apply the combined DL and ULTCI states to multiple CCs. The UE can apply the combined DL and ULTCI states to multiple CCs in response to receiving activation of the combined DL and ULTCI states for a CC. For example, at 1112, UE 1102 can apply the combined DL and ULTCI states to multiple CCs. Furthermore, 1308 can be performed by the application component 1646 of device 1602. The UE can apply the combined DL and ULTCI states to multiple CCs in response to receiving activation of the combined DL and ULTCI states for a CC.

[0149] Figure 14 This is a flowchart 1400 of a wireless communication method. The method can be performed by a base station or a component of a base station (e.g., base station 102 / 180, 504; device 1702; baseband unit 1704, which may include memory 376, and may be the entire base station 310 or components of base station 310, such as TX processor 316, RX processor 370, and / or controller / processor 375). One or more of the operations shown can be omitted, transposed, or occur simultaneously. This method can allow the base station to configure the UE to activate the same joint TCI state ID or the ID of a single component of the joint TCI state ID across multiple CCs when activating a joint DL / ULTCI state for CC activation.

[0150] At 1401, the base station can configure a CC list including multiple CCs. For example, at 1106, base station 1104 can configure a CC list including multiple CCs. Furthermore, 1401 can be performed by the configuration component 1740 of device 1702. In some aspects, the CC list may include a dedicated CC list for cross-CC activation of the joint DL and ULTCI states. In some aspects, the CC list can be used for cross-CC activation of either the DLTCI state or the ULTCI state.

[0151] At 1402, the base station can send a configuration of the CC list for cross-CC activation. For example, at 1108, base station 1104 can send the CC list configuration to UE 1102. Furthermore, 1402 can be performed by the configuration component 1740 of device 1702. The base station can send the CC list configuration to the UE, and in some examples, the base station can configure more than one CC list for UE 1102. The base station can configure the CC list in RRC signaling to the UE. In some aspects, the CC list may include a dedicated CC list for cross-CC activation of the combined DL and ULTCI states. In some aspects, the CC list can be used for cross-CC activation of either the DL TCI state or the ULTCI state.

[0152] At 1403, the base station can transmit configurations for one or more joint DL and UL TCI states for the UE. For example, at 1110, base station 1104 can configure one or more joint DL and UL TCI states for UE 1102. Furthermore, 1402 can be performed by configuration component 1740 of device 1702. The joint DL and UL TCI states can each indicate parameters (such as beamforming) used for downlink and uplink communication with the base station. For example, the joint DL and UL TCI states can indicate parameters based on the source reference signal. The base station can transmit the configuration of the joint DL and UL TCI states to the UE in RRC signaling.

[0153] At 1404, the base station can send activation of the joint DL and UL TCI states for a CC included in the CC list, to activate the joint DL and UL TCI states for each of the multiple CCs included in the list. For example, at 1111, base station 1104 can send activation of at least one of the configured joint DL and UL TCI states for a CC included in the CC list, to activate the joint DL and UL TCI states for each of the multiple CCs included in the list. Furthermore, 1404 can be performed by the activation component 1744 of device 1702. The base station can send activation of the joint DL and UL TCI states for a CC included in the CC list to the UE. The joint DL and UL TCI states can indicate a common beam for communication in the DL and UL. In some aspects, activation of the joint DL and UL TCI states for a CC can be sent in one or more of the MAC-CE or DCI. The MAC-CE or DCI can indicate the CC or BWP ID for which the joint DL and UL TCI states are activated. In some aspects, the activation can activate the joint DL and ULTCI states for each BWP of each of multiple CCs. In some aspects, the activation is used to activate the joint DL and ULTCI states for the active BWP of each of multiple CCs. The active BWP can be a downlink BWP or an uplink BWP. The base station can send the activation of the joint DL and ULTCI states in a message that can indicate the joint TCI state ID and the ID of one or more components of the joint TCI state ID. In some aspects, one or more components of the joint TCI state ID include one or more of the following: reference signal ID, uplink power control parameters, uplink timing advance parameters, UE panel ID, antenna port ID, or beamgroup ID. Similarly, base station 1104 can indicate the deactivation of the joint DL and ULTCI states, and the base station can send activation / deactivation of the joint DL and ULTCI states for CCs included in the CC list (e.g., for a single CC) to UE 1102.

[0154] At 1410, the base station can transmit / receive downlink and / or uplink communication based on the activation of the joint DL / UL TCI state. Downlink and / or uplink communication can be exchanged on multiple CCs based on the activated joint DL / UL TCI state. For example, at 1114, base station 1104 and UE 1102 can exchange downlink and / or uplink communication based on the activation of the joint DL / UL TCI state. Furthermore, 1410 can be performed by application component 1746 of device 1702.

[0155] Figure 15 This is a flowchart 1500 of a wireless communication method. The method can be performed by a base station or a component of a base station (e.g., base station 102 / 180, 504; device 1702; baseband unit 1704, which may include memory 376, and may be the entire base station 310 or components of base station 310, such as TX processor 316, RX processor 370, and / or controller / processor 375). One or more of the operations shown can be omitted, interchanged, or occur simultaneously. This method can allow the base station to configure the UE to activate the same joint TCI state ID or the ID of a single component of the joint TCI state ID across multiple CCs when activating a joint DL / UL TCI state for CC activation.

[0156] At 1501, the base station can be configured with a CC list including multiple CCs. For example, at 1106, base station 1104 can be configured with a CC list including multiple CCs. Furthermore, 1501 can be performed by the configuration component 1740 of device 1702. In some aspects, the CC list may include a dedicated CC list for cross-CC activation of the joint DL and UL TCI states. In some aspects, the CC list can be used for cross-CC activation of either the DL TCI state or the ULTCI state.

[0157] At 1504, the base station can send activation of the joint DL and UL TCI states for a CC included in the CC list, to activate the joint DL and UL TCI states for each of the multiple CCs included in the list. For example, at 1111, base station 1104 can send activation of at least one of the configured joint DL and UL TCI states for a CC included in the CC list, to activate the joint DL and UL TCI states for each of the multiple CCs included in the list. Furthermore, 1504 can be performed by the activation component 1744 of device 1702. The base station can send activation of the joint DL and UL TCI states for a CC included in the CC list to the UE. The joint DL and UL TCI states can indicate a common beam for communication in the DL and UL. In some aspects, activation of the joint DL and UL TCI states for a CC can be sent in one or more of the MAC-CE or DCI. The MAC-CE or DCI can indicate the CC or BWP ID for which the joint DL and UL TCI states are activated. In some aspects, the activation can activate the joint DL and UL TCI states for each BWP of each of multiple CCs. In some aspects, the activation is used to activate the joint DL and UL TCI states for the active BWP of each of multiple CCs. The active BWP can be a downlink BWP or an uplink BWP. The base station can send the activation of the joint DL and UL TCI states in a message that can indicate the joint TCI state ID and the ID of one or more components of the joint TCI state ID. In some aspects, one or more components of the joint TCI state ID include one or more of the following: reference signal ID, uplink power control parameters, uplink timing advance parameters, UE panel ID, antenna port ID, or beamgroup ID. Similarly, base station 1104 can indicate the deactivation of the joint DL and UL TCI states, and the base station can send activation / deactivation of the joint DL and UL TCI states for CCs included in the CC list (e.g., for a single CC) to UE 1102.

[0158] Figure 16This is a schematic diagram 1600 illustrating an example of a hardware implementation for device 1602. Device 1602 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, device 1602 may include a cellular baseband processor 1604 (also referred to as a modem) coupled to a cellular RF transceiver 1622. In some aspects, device 1602 may also include one or more Subscriber Identity Module (SIM) cards 1620, an application processor 1606 coupled to a Secure Digital Card (SD) card 1608 and a screen 1610, Bluetooth 1612, a Wireless Local Area Network (WLAN) 1614, a Global Positioning System (GPS) 1616, or a power supply 1618. Cellular baseband processor 1604 communicates with UE 104 and / or BS 102 / 180 via cellular RF transceiver 1622. Cellular baseband processor 1604 may include computer-readable media / memory. The computer-readable media / memory may be non-transitory. Cellular baseband processor 1604 is responsible for general processing, including executing software stored on a computer-readable medium / memory. When executed by cellular baseband processor 1604, the software causes cellular baseband processor 1604 to perform the various functions described above. The computer-readable medium / memory can also be used to store data manipulated by cellular baseband processor 1604 during software execution. Cellular baseband processor 1604 also includes a receiving component 1630, a communication manager 1632, and a transmitting component 1634. Communication manager 1632 includes one or more of the components shown. Components within communication manager 1632 can be stored in computer-readable medium / memory and / or configured as hardware within cellular baseband processor 1604. Cellular baseband processor 1604 can be a component of UE 350 and can include at least one of TX processor 368, RX processor 356, and controller / processor 359 and / or memory 360. In one configuration, device 1602 may be a modem chip and include only the cellular baseband processor 1604, and in another configuration, device 1602 may be the entire UE (e.g., see...). Figure 3 (350) and includes an additional module of device 1602.

[0159] Communication manager 1632 includes configuration component 1640, which is configured to: receive from the base station configuration indicating applicable DL / UL types or resources for an activated joint DL / UL TCI state; receive configuration for a list of CCs activated across CCs for the joint DL and ULTCI state; and receive configuration for one or more joint DL and UL TCI states for the base station, for example, as described in conjunction with 604, 1202, and 1203. Communication manager 1632 also includes ACK / NACK component 1642, which is configured to send an acknowledgment to the base station confirming reception of the DCI, for example, as described in conjunction with 608. The communication manager 1632 also includes an activation component 1644 configured to: receive from the base station a MAC-CE activating a subset of the configured joint DL and UL TCI states; receive from the base station a DCI indicating an index of a TCI code point; receive from the base station an indication of DL and UL resources for communication; and receive activation of the joint DL and UL TCI states for CC, for example, as described in conjunction with 602, 606, 610, 702, 1204, and 1304. The communication manager 1632 also includes an application component 1646 configured to: determine the DL and UL resources used for communication applied by an activated joint DL and UL TCI state corresponding to the index of the TCI code point indicated by the DCI; communicate with the base station via DL and UL based on the activated joint DL and UL TCI state; apply the joint DL and UL TCI state to multiple CCs; and transmit / receive downlink and / or uplink communication based on the activation of the joint DL / UL TCI state, for example, as described in conjunction with 612, 614, 714, 1208, 1210, and 1308.

[0160] The apparatus may include execution Figure 5 , 6 Additional components in each box of the algorithm in flowcharts 7, 11, 12, and 13. Therefore, Figure 5 , 6 Each block in flowcharts 7, 11, 12, and 13 may be executed by a component, and the apparatus may include one or more of these components. These components may be one or more hardware components specifically configured to execute the process / algorithm, implemented by a processor configured to execute the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0161] As shown, apparatus 1602 may include various components configured for various functions. In one configuration, apparatus 1602 (and specifically, cellular baseband processor 1604) includes: a unit for receiving from a base station a MAC-CE that activates a subset of configured joint DL / ULTCI states, each activated joint DL and ULTCI state indicating a common beam for communication in the DL and UL; and a unit for communicating with the base station via the DL and UL based on the activated joint DL and UL TCI states. Apparatus 1602 also includes: a unit for receiving from the base station a configuration indicating which of the following is applicable to each activated joint DL and UL TCI state: PDCCH, PDSCH, CSI-RS, PRS, or SSB; and indicating which of the following is applicable to each activated joint DL and ULTCI state: PUCCH, PUSCH, SRS, or PRACH. Apparatus 1602 further includes: a unit for receiving from a base station a DCI indicating an index of a TCI code point, the index corresponding to one of an activated joint DL and ULTCI states; and a unit for sending an acknowledgment to the base station confirming receipt of the DCI. Apparatus 1602 further includes: a unit for determining DL and UL resources for communication applied to an activated joint DL and ULTCI state corresponding to the index of the TCI code point indicated by the DCI. Apparatus 1602 further includes: a unit for receiving from the base station an indication of the DL and UL resources for communication, wherein the UL and DL resources for communication are determined based on the received indication. Apparatus 1602 includes: a unit for receiving from the base station an activation of a joint DL and ULTCI state for CC. The joint DL and ULTCI state indicates a common beam for communication in DL and UL. Apparatus 1602 includes: a unit for applying a joint DL and UL TCI state to multiple CCs in response to receiving an activation of a joint DL and ULTCI state for CC. The apparatus further includes a unit for receiving a list of CCs for cross-CC activation of the joint DL and ULTCI states. The UE applies the joint DL and ULTCI states to each CC included in the CC list. These units may be one or more components of the apparatus 1602 configured to perform the functions described through these units. As described above, the apparatus 1602 may include a TX processor 368, an RX processor 356, and a controller / processor 359. Therefore, in one configuration, these units may be the TX processor 368, the RX processor 356, and the controller / processor 359, configured to perform the functions described through these units.

[0162] Figure 17This is a schematic diagram 1700 illustrating an example of a hardware implementation for device 1702. Device 1702 may be a base station, a component of a base station, or may implement base station functions. In some aspects, device 1702 may include a baseband unit 1704. Baseband unit 1704 may communicate with UE 104 via cellular RF transceiver 1722. Baseband unit 1704 may include a computer-readable medium / memory. Baseband unit 1704 is responsible for general processing, including executing software stored on the computer-readable medium / memory. When executed by baseband unit 1704, the software causes baseband unit 1704 to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by baseband unit 1704 when executing the software. Baseband unit 1704 also includes a receiving component 1730, a communication manager 1732, and a transmitting component 1734. Communication manager 1732 includes one or more of the components shown. Components within the communication manager 1732 may be stored in a computer-readable medium / memory and / or configured as hardware within the baseband unit 1704. The baseband unit 1704 may be a component of the base station 310 and may include at least one of the TX processor 316, the RX processor 370, and the controller / processor 375 and / or the memory 376.

[0163] Communication manager 1732 includes configuration component 1740, which is configured to: send to the UE a configuration indicating the applicable DL / UL type or resource for an activated joint DL / UL TCI state; send to the UE a DCI indicating the index of the TCI code point; send to the UE an indication of DL and UL resources for communication; configure a CC list including multiple CCs; send a configuration for a CC list for cross-CC activation; and send a configuration for one or more joint DL and UL TCI states for the UE, for example, as described in conjunction with 804, 806, 810, 1401, 1402, 1403, and 1501. Communication manager 1732 also includes ACK / NACK component 1742, which is configured to: receive from the UE an acknowledgment confirming the reception of the DCI, for example, as described in conjunction with 808. The communication manager 1732 also includes an activation component 1744 configured to: send a MAC-CE to the UE activating a subset of the configured combined DL and ULTCI states; and send activation for the combined DL and ULTCI states for CCs included in the CC list, to activate the combined DL and ULTCI states for each of the multiple CCs included in the list, as described in conjunction with 802, 902, 1404, and 1504. The communication manager 1732 also includes an application component 1746 configured to: communicate with the UE via DL and UL based on the activated combined DL and ULTCI states; and send / receive downlink and / or uplink communications based on the activation of the combined DL / ULTCI states, for example, as described in conjunction with 812, 912, and 1410.

[0164] The apparatus may include execution Figure 5 , 8 Additional components in each box of the algorithm in flowcharts 9, 11, 14, and 15. Therefore, Figure 5 , 8 Each block in the flowcharts 9, 11, 14, and 15 can be executed by a component, and the apparatus can include one or more of these components. These components can be one or more hardware components specifically configured to execute the process / algorithm, implemented by a processor configured to execute the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0165] As shown, apparatus 1702 may include various components configured for various functions. In one configuration, apparatus 1702 (and specifically, baseband unit 1704) includes: a unit for transmitting to the UE a MAC-CE that activates a subset of configured joint DL / UL TCI states, each activated joint DL and UL TCI state indicating a common beam for communication in the DL and UL; and a unit for communicating with the UE via the DL and UL based on the activated joint DL and UL TCI states. Apparatus 1702 further includes: a unit for transmitting a configuration to the UE indicating which of the following is applicable to each of the activated joint DL and UL TCI states: PDCCH, PDSCH, CSI-RS, PRS, or SSB; and indicating which of the following is applicable to each of the activated joint DL and UL TCI states: PUCCH, PUSCH, SRS, or PRACH; and a unit for transmitting to the UE a DCI indicating an index of a TCI code point, the index corresponding to one of the activated joint DL and UL TCI states. Apparatus 1702 further includes: a unit for receiving an acknowledgment (ACK) from the UE confirming reception of the DCI; and a unit for transmitting to the UE an indication of DL resources and UL resources for communication, wherein the DL resources and UL resources for communication applied to an activated joint DL and UL TCI state corresponding to the index of the TCI code point indicated by the DCI are determined based on the transmitted indication. Apparatus 1702 includes: a unit for configuring a CC list comprising a plurality of CCs. The apparatus also includes: a unit for sending activation of a joint DL and UL TCI state to a user equipment for a CC included in the CC list, thereby activating the joint DL and UL TCI state for each CC in the plurality of CCs included in the list. The joint DL and UL TCI state indicates a common beam for communication in the DL and UL. These units may be one or more components of apparatus 1702 configured to perform the functions described through these units. As described above, apparatus 1702 may include a TX processor 316, an RX processor 370, and a controller / processor 375. Therefore, in one configuration, these units may be the TX processor 316, the RX processor 370, and the controller / processor 375, configured to perform the functions described through these units.

[0166] The base station may send a MAC-CE to the UE activating a subset of configured joint DL and UL TCI states, each activated joint DL and UL TCI state indicating a common beam used for communication in the DL and UL. The base station may send the UE a configuration indicating the applicable DL / UL types or resources for the activated joint DL / UL TCI states. Applicable DL / UL types or resources may include one or more of PDCCH, PDSCH, CSI-RS, or PRS for DL ​​and one or more of PUCCH, PUSCH, SRS, or PRACH for UL. The configuration may be received via at least one of RRC signaling, MAC-CE, and / or DCI. The base station may send the UE a DCI indicating an index of a TCI code point, the index corresponding to one of the activated joint DL and UL TCI states. The UE may send an acknowledgment to the base station confirming reception of the DCI. The base station may send the UE an indication of DL and UL resources used for communication. The indication can be received via RRC signaling, MAC-CE, or DCI. The UE can determine the DL and UL resources used for communication for an activated joint DL and UL TCI state corresponding to the index of the TCI code point indicated via DCI. The DL and UL resources used for communication can be determined based on predefined rules or the received indication. The UE and the base station can communicate with each other via DL and UL based on the activated joint DL and UL TCI state.

[0167] It is to be understood that the specific order or hierarchy of the boxes in the disclosed process / flowchart is illustrative of the example method. It is to be understood that the specific order or hierarchy of the boxes in the process / flowchart may be rearranged based on design preferences. Furthermore, some boxes may be combined or omitted. The appended method claims give the elements of the individual boxes in the illustrative order and are not intended to be limited to the given specific order or hierarchy.

[0168] The foregoing description is provided to enable any person skilled in the art to implement the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but are to be given the full scope consistent with the language of the claims, wherein, unless expressly stated otherwise, references to singular elements are not intended to mean “one and only one,” but rather “one or more.” Terms such as “if,” “when,” and “at the same time as,” should be interpreted as “under the condition of,” rather than implying an immediate temporal relationship or reaction. That is, these phrases (e.g., “when”) do not imply an immediate action in response to or during the occurrence of an action, but only that an action will occur if the condition is met, without requiring a specific or immediate temporal constraint on the occurrence of the action. The word “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred or superior to other aspects. Unless expressly stated otherwise, the term “some” refers to one or more. For example, 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, and may include multiples of A, multiples of B, or multiples of 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 members of A, B, or C. All structural and functional equivalents of the elements described throughout the various aspects of this disclosure that are known to or will be known later by one of ordinary skill in the art are expressly incorporated herein by reference and are intended to be included by the claims. Furthermore, the disclosure herein is not intended to be offered to the public, whether or not such disclosure is expressly recited in the claims. The terms “module,” “mechanism,” “element,” “device,” etc., are not necessarily substitutes for the term “unit.” Therefore, no claim can be made that an element should be interpreted as a functional unit unless the element is explicitly described using the phrase “unit for…”.

[0169] The following aspects are illustrative only and may be combined with other aspects or teachings described herein without limitation.

[0170] Aspect 1 is an apparatus for wireless communication, comprising: at least one processor coupled to a memory and configured to: receive from a base station a MAC-CE that activates a subset of configured joint DL and ULTCI states, each activated joint DL and ULTCI state indicating a common beam for communication in the DL and ULTCI; and communicate with the base station via the DL and ULTCI based on the activated joint DL and ULTCI states.

[0171] Aspect 2 is the apparatus according to aspect 1, wherein the MAC-CE includes a bitmap indicating which configured joint DL and ULTCI states are activated and at least one of the serving cell ID or BWP ID associated with the base station for activation, wherein communication with the base station via DL and UL is performed via at least one of the serving cell associated with the serving cell ID or the BWP associated with the BWPID at the base station.

[0172] Aspect 3 is the apparatus according to any of Aspects 1 and 2, wherein each activated joint DL and ULTCI state is associated with at least one of PDCCH, PDSCH, CSI-RS, PRS or SSB for DL ​​and at least one of PUCCH, PUSCH, SRS or PRACH for UL.

[0173] Aspect 4 is the apparatus according to aspect 3, wherein at least one processor and memory are further configured to: receive configuration from a base station indicating which of the following is applicable to each of the activated joint DL and UL TCI states: PDCCH, PDSCH, CSI-RS, PRS, or SSB; and indicating which of the following is applicable to each of the activated joint DL and UL TCI states: PUCCH, PUSCH, SRS, or PRACH.

[0174] Aspect 5 is the apparatus according to aspect 4, wherein the configuration is received via at least one of RRC signaling, MAC-CE, or DCI.

[0175] Aspect 6 is an apparatus according to any of aspects 1 to 5, wherein at least one processor and memory are further configured to: receive downlink control information (DCI) from a base station indicating an index of a TCI code point, the index corresponding to one of the activated joint DL and ULTCI states.

[0176] Aspect 7 is the apparatus according to aspect 6, wherein the received DCI does not schedule communication via DL or UL.

[0177] Aspect 8 is the apparatus according to aspect 7, wherein at least one processor and memory are further configured to send an acknowledgment to the base station confirming receipt of the DCI.

[0178] Aspect 9 is the apparatus according to any of aspects 6 to 8, wherein the received DCI schedules communication via DL or UL, and the communication via DL or UL scheduled via DCI is based on an activated DL and ULTCI state corresponding to the index of the TCI code point indicated by DCI.

[0179] Aspect 10 is an apparatus according to any of aspects 6 to 9, wherein at least one processor and memory are further configured to: determine the DL resources and UL resources for communication applied by an activated joint DL and UL TCI state corresponding to the index of the TCI code point indicated by the DCI.

[0180] Aspect 11 is the apparatus according to aspect 10, wherein the DL resources and UL resources used for communication are determined based on predefined rules.

[0181] Aspect 12 is an apparatus according to any of aspects 10 and 11, wherein at least one processor and memory are further configured to: receive from a base station an indication of DL resources and UL resources for communication, wherein the DL resources and UL resources for communication are determined based on the received indication.

[0182] Aspect 13 is the apparatus according to aspect 12, wherein the indication is received via one of RRC signaling, MAC-CE, or DCI.

[0183] Aspect 14 is an apparatus according to any of aspects 1 to 13, wherein the joint DL and UL TCI states activated in MAC-CE are mapped to TCI code points using sequential indexing.

[0184] Aspect 15 is the apparatus according to any of aspects 1 to 14, wherein the identifier (ID) of the configured joint DL and UL TCI status is a non-unique TCI status ID.

[0185] Aspect 16 is the apparatus according to aspect 15, wherein the received MAC-CE is associated with the combined DL and UL TCI states, but not with either the DL TCI state or the UL TCI state.

[0186] Aspect 17 is an apparatus according to any of aspects 15 to 16, wherein the received MAC-CE is associated with a combined DL and UL TCI state and at least one of the DL TCI state or the UL TCI state.

[0187] Aspect 18 is the apparatus according to aspect 17, wherein the MAC-CE indicates which subset of TCI states in the MAC-CE are combined DL and ULTCI states, DL TCI states and ULTCI states.

[0188] Aspect 19 is the apparatus according to aspect 18, wherein the received MAC-CE is associated with at least one of the combined DL and UL TCI states and the DLTCI state or the UL TCI state.

[0189] Aspect 20 is the apparatus according to any of aspects 1 to 19, wherein the configured ID of the combined DL and UL TCI state is a unique TCI state ID.

[0190] Aspect 21 is a method for implementing wireless communication in any of aspects 1 to 20.

[0191] Aspect 22 is a device for wireless communication, including units for implementing any aspect of aspects 1 to 20.

[0192] Aspect 23 is a computer-readable medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement any of aspects 1 to 20.

[0193] Aspect 24 is an apparatus for wireless communication, comprising: at least one processor coupled to a memory and configured to: send to a UE a MAC-CE activating a subset of configured joint DL and UL TCI states, each activated joint DL and UL TCI state indicating a common beam for communication in the DL and UL; and communicate with the UE via the DL and UL based on the activated joint DL and UL TCI states.

[0194] Aspect 25 is the apparatus according to aspect 24, wherein the MAC-CE includes a bitmap indicating which configured joint DL and UL TCI states are activated and at least one of the serving cell ID or BWP ID associated with the base station for activation, wherein communication with the UE via DL and UL is performed via at least one of the serving cell associated with the serving cell ID or the BWP associated with the BWP ID at the base station.

[0195] Aspect 26 is the apparatus according to any of aspects 24 and 25, wherein each activated joint DL and ULTCI state is associated with at least one of PDCCH, PDSCH, CSI-RS, PRS or SSB for DL ​​and at least one of PUCCH, PUSCH, SRS or PRACH for UL.

[0196] Aspect 27 is the apparatus according to aspect 26, wherein at least one processor and memory are further configured to: send a configuration to the UE indicating which of the following is applicable to each of the activated joint DL and ULTCI states: PDCCH, PDSCH, CSI-RS, PRS, or SSB; and indicating which of the following is applicable to each of the activated joint DL and ULTCI states: PUCCH, PUSCH, SRS, or PRACH.

[0197] Aspect 28 is the apparatus according to aspect 27, wherein the configuration is transmitted via at least one of RRC signaling, MAC-CE, or DCI.

[0198] Aspect 29 is an apparatus according to any of aspects 24 to 28, wherein at least one processor and memory are further configured to: send to the UE a DCI indicating an index of a TCI code point, the index corresponding to one of the activated joint DL and UL TCI states.

[0199] Aspect 30 is the apparatus according to aspect 29, wherein the transmitted DCI is not scheduled for communication via DL or UL.

[0200] Aspect 31 is the apparatus according to aspect 30, wherein at least one processor and memory are further configured to receive an ACK from the UE confirming the reception of the DCI.

[0201] Aspect 32 is the apparatus according to any of aspects 29 to 31, wherein the transmitted DCI schedules communication via DL or UL, and the communication via DL or UL scheduled via DCI is based on an activated DL and UL TCI state corresponding to an index of the TCI code point indicated by the DCI.

[0202] Aspect 33 is the apparatus according to any of aspects 29 to 32, wherein the DL resources and UL resources for communication applied to an activated joint DL and UL TCI state corresponding to the index of the TCI code point indicated by the DCI are determined based on predefined rules.

[0203] Aspect 34 is an apparatus according to any of aspects 29 to 33, wherein at least one processor and memory are further configured to: send to the UE an indication of DL resources and UL resources for communication, wherein the DL resources and UL resources for communication applied by an activated joint DL and UL TCI state corresponding to the index of the TCI code point indicated by the DCI are determined based on the sent indication.

[0204] Aspect 35 is the apparatus according to aspect 34, wherein the indication is transmitted via one of RRC signaling, MAC-CE, or DCI.

[0205] Aspect 36 is an apparatus according to any of aspects 24 to 35, wherein the joint DL and UL TCI states activated in MAC-CE are mapped to TCI code points using sequential indexing.

[0206] Aspect 37 is the apparatus according to any of aspects 24 to 36, wherein the configured ID of the combined DL and ULTCI state is a non-unique TCI state ID.

[0207] Aspect 38 is the apparatus according to aspect 37, wherein the transmitted MAC-CE is associated with the combined DL and ULTCI states, but not with the DL TCI state or the ULTCI state.

[0208] Aspect 39 is the apparatus according to any of aspects 37 and 38, wherein the transmitted MAC-CE is associated with at least one of the combined DL and UL TCI states and the DLTCI state or the ULTCI state.

[0209] Aspect 40 is the apparatus according to aspect 39, wherein the MAC-CE indicates which subset of TCI states in the MAC-CE are combined DL and ULTCI states, DL TCI states and ULTCI states.

[0210] Aspect 41 is the apparatus according to aspect 40, wherein the transmitted MAC-CE is associated with at least one of the combined DL and UL TCI states and the DLTCI state or the UL TCI state.

[0211] Aspect 42 is the apparatus according to any of aspects 24 to 41, wherein the configured ID of the combined DL and ULTCI state is a unique TCI state ID.

[0212] Aspect 43 is a method for implementing wireless communication in any of aspects 24 to 43.

[0213] Aspect 44 is a device for wireless communication, including units for implementing any aspect of aspects 24 to 43.

[0214] Aspect 45 is a computer-readable medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement any of aspects 24 to 43.

[0215] Aspect 46 is an apparatus for wireless communication, comprising: at least one processor coupled to a memory and configured to: receive from a base station activation of a joint DL and ULTCI state for a CC, the joint DL and ULTCI state indicating a common beam for communication in the DL and UL; and apply the joint DL and ULTCI state to a plurality of CCs in response to receiving activation of the joint DL and ULTCI state for the CC.

[0216] Aspect 47 is the apparatus according to aspect 46, wherein activation of the combined DL and UL TCI states for CC is received in one or more of MAC-CE or DCI.

[0217] Aspect 48 is the apparatus according to aspect 47, wherein MAC-CE or DCI indicates a CC or BWP ID for activating the combined DL and ULTCI states.

[0218] Aspect 49 is an apparatus according to any of aspects 46 to 48, wherein a CC is associated with a list of a plurality of CCs, and wherein at least one processor and memory apply a joint DL and UL TCI state to each CC in the list of a plurality of CCs in response to receiving activation of a joint DL and UL TCI state for a CC.

[0219] Aspect 50 is the apparatus according to aspect 49, wherein at least one processor and memory apply the combined DL and ULTCI states to each BWP of each of a plurality of CCs.

[0220] Aspect 51 is an apparatus according to any of aspects 46 to 50, wherein at least one processor and memory apply the combined DL and UL TCI states to the active BWP of each of a plurality of CCs.

[0221] Aspect 52 is the apparatus according to aspect 51, wherein the active BWP is a downlink BWP or an uplink BWP.

[0222] Aspect 53 is an apparatus according to any of aspects 46 to 52, wherein at least one processor and memory are further configured to: receive a list of CCs for cross-CC activation of the joint DL and ULTCI states, wherein at least one processor and memory apply the joint DL and ULTCI states to each CC included in the CC list.

[0223] Aspect 54 is the apparatus according to aspect 53, wherein the CC list includes a dedicated CC list for cross-CC activation for the combined DL and ULTCI states.

[0224] Aspect 55 is the apparatus according to any of aspects 46 to 54, wherein the CC list is used for cross-CC activation of the DLTCI state or the UL TCI state.

[0225] Aspect 56 is an apparatus according to any of aspects 46 to 55, wherein at least one processor and memory receive in a message activation of the joint DL and UL TCI states, the message indicating the joint TCI state ID and the ID of one or more components of the joint TCI state ID.

[0226] Aspect 57 is the apparatus according to aspect 56, wherein one or more components of the joint TCI state ID include one or more of the following: reference signal ID, uplink power control parameters, uplink timing advance parameters, UE panel ID, antenna port ID, or beam group ID.

[0227] Aspect 58 is the apparatus according to any of aspects 46 to 57, wherein activation is configured to activate a subset of configured joint DL and UL TCI states, each activated joint DL and UL TCI state indicating a common beam for communication in the DL and UL.

[0228] Aspect 59 is an apparatus according to any of aspects 46 to 58, wherein at least one processor and memory are further configured to: receive from a base station a DCI indicating an index of a TCI code point, the index corresponding to one of an activated joint DL and ULTCI state.

[0229] Aspect 60 is a method for implementing wireless communication in any of aspects 46 to 59.

[0230] Aspect 61 is a device for wireless communication, including units for implementing any aspect of aspects 46 to 59.

[0231] Aspect 62 is a computer-readable medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement any one of aspects 46 to 59.

[0232] Aspect 63 is an apparatus for wireless communication, comprising: at least one processor coupled to a memory and configured to: configure a CC list including a plurality of CCs; and send to a user equipment (UE) activation of a joint DL and UL TCI state for CCs included in the CC list, to activate the joint DL and UL TCI state for each of the plurality of CCs included in the list, wherein the joint DL and UL TCI state indicates a common beam for communication in the DL and UL.

[0233] Aspect 46 is the apparatus according to aspect 63, wherein activation of the combined DL and UL TCI states for CC is sent in one or more of MAC-CE or DCI.

[0234] Aspect 65 is the apparatus according to aspect 46, wherein MAC-CE or DCI indicates a CC or BWP ID for activating the combined DL and ULTCI states.

[0235] Aspect 66 is an apparatus according to any of aspects 63 to 65, wherein activation of each BWP for each of the plurality of CCs activates the joint DL and ULTCI states.

[0236] Aspect 67 is the apparatus according to any of aspects 63 to 66, wherein activating the active BWP for each of the plurality of CCs activates the joint DL and UL TCI states.

[0237] Aspect 68 is the apparatus according to aspect 67, wherein the active BWP is a downlink BWP or an uplink BWP.

[0238] Aspect 69 is an apparatus according to any of aspects 63 to 68, wherein at least one processor and memory are further configured to: transmit a configuration for cross-CC activation of the joint DL and UL TCI states.

[0239] Aspect 70 is the apparatus according to any of aspects 63 to 69, wherein the CC list includes a dedicated CC list for cross-CC activation for the combined DL and UL TCI states.

[0240] Aspect 71 is the apparatus according to any of aspects 63 to 70, wherein the CC list is used for cross-CC activation of the DL TCI state or the ULTCI state.

[0241] Aspect 72 is an apparatus according to any of aspects 63 to 71, wherein at least one processor and memory send an activation of the joint DL and UL TCI states in a message indicating the joint TCI state ID and the ID of one or more components of the joint TCI state ID.

[0242] Aspect 73 is the apparatus according to aspect 72, wherein one or more components of the joint TCI state ID include one or more of the following: reference signal ID, uplink power control parameters, uplink timing advance parameters, UE panel ID, antenna port ID, or beam group ID.

[0243] Aspect 74 is the apparatus according to any of aspects 63 to 73, wherein activation is configured to activate a subset of configured joint DL and UL TCI states, each activated joint DL and UL TCI state indicating a common beam for communication in the DL and UL.

[0244] Aspect 75 is an apparatus according to any of aspects 63 to 74, wherein at least one processor and memory are further configured to: send to the UE a DCI indicating an index of a TCI code point, the index corresponding to one of the activated joint DL and UL TCI states.

[0245] Aspect 76 is a method for implementing wireless communication in any of aspects 63 to 75.

[0246] Aspect 77 is a device for wireless communication, including units for implementing any aspect of aspects 63 to 75.

[0247] Aspect 78 is a computer-readable medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement any of aspects 63 to 75.

Claims

1. An apparatus for wireless communication at a user equipment (UE), comprising: Memory; as well as At least one processor coupled to the memory, the at least one processor and the memory being configured as follows: Receive from the base station activation of the joint downlink (DL) and uplink (UL) transmission configuration indicator (TCI) states for component carrier (CC), the joint DL and UL TCI states indicating the common beam for communication in the DL and UL; and In response to receiving the activation of the joint DL and UL TCI state for the CC, the joint DL and UL TCI state are applied to multiple CCs. The activation is configured to activate a subset of configured joint DL and UL TCI states, each activated joint DL and UL TCI state indicating the common beam used for communication in the DL and UL.

2. The apparatus according to claim 1, wherein, The activation of the combined DL and ULTCI state for the CC is received in one or more of the Media Access Control (MAC) control element CE MAC-CE or the Downlink Control Information (DCI).

3. The apparatus according to claim 2, wherein, The MAC-CE or the DCI indicates the CC or bandwidth portion BWP identifier ID for activating the combined DL and ULTCI state.

4. The apparatus according to claim 1, wherein, The CC is associated with a list of the plurality of CCs, and wherein the at least one processor and the memory apply the joint DL and ULTCI states to each CC in the list of the plurality of CCs in response to receiving the activation of the joint DL and ULTCI states for the CC.

5. The apparatus according to claim 4, wherein, The at least one processor and the memory apply the combined DL and UL TCI states to each BWP of each of the plurality of CCs.

6. The apparatus according to claim 4, wherein, The at least one processor and the memory apply the combined DL and ULTCI states to the active BWP of each of the plurality of CCs.

7. The apparatus according to claim 6, wherein, The active BWP is either a downlink BWP or an uplink BWP.

8. The apparatus according to claim 1, wherein, The at least one processor and the memory are further configured to: Receive configuration for a list of CCs activated across CCs for the joint DL and UL TCI states. The at least one processor and the memory apply the combined DL and UL TCI status to each CC included in the CC list.

9. The apparatus according to claim 8, wherein, The CC list includes a dedicated CC list for cross-CC activation for the joint DL and ULTCI states.

10. The apparatus according to claim 8, wherein, The CC list is used for cross-CC activation of the DL TCI state or ULTCI state.

11. The apparatus according to claim 1, wherein, The at least one processor and the memory receive the activation of the joint DL and ULTCI state in a message indicating the joint TCI state identifier ID and the ID of one or more components of the joint TCI state ID.

12. The apparatus according to claim 11, wherein, The one or more components in the joint TCI status ID include one or more of the following: Reference signal ID, Uplink power control parameters Uplink timing advance parameters, UE panel ID, Antenna port ID, or Beamgroup ID.

13. The apparatus according to claim 1, wherein, The at least one processor and the memory are further configured to receive downlink control information (DCI) from the base station, the DCI being an index indicating a TCI code point, the index corresponding to one of the activated joint DL and UL TCI states.

14. An apparatus for wireless communication at a base station, comprising: Memory; as well as At least one processor coupled to the memory, the at least one processor and the memory being configured as follows: The configuration includes a list of CCs containing multiple component carriers; as well as The User Equipment (UE) is sent with the activation of a Joint Downlink (DL) and Uplink UL (UL) Transmission Configuration Indicator (TCI) state for each of the plurality of CCs included in the CC list, wherein the Joint DL and UL TCI states indicate a common beam for communication in the DL and UL. The activation is configured to activate a subset of configured joint DL and ULTCI states, each activated joint DL and ULTCI state indicating the common beam used for communication in the DL and UL.

15. The apparatus according to claim 14, wherein, The activation of the combined DL and ULTCI state for the CC is sent in one or more of the Media Access Control (MAC) control element CE MAC-CE or the Downlink Control Information (DCI).

16. The apparatus according to claim 15, wherein, The MAC-CE or the DCI indicates the CC or bandwidth portion BWP identifier ID for activating the combined DL and UL TCI state.

17. The apparatus according to claim 14, wherein, The activation is performed on each BWP of each of the plurality of CCs to activate the combined DL and UL TCI state.

18. The apparatus according to claim 14, wherein, The activation targets the active BWP for each of the plurality of CCs to activate the combined DL and UL TCI state.

19. The apparatus according to claim 18, wherein, The active BWP is either a downlink BWP or an uplink BWP.

20. The apparatus according to claim 14, wherein, The at least one processor and the memory are further configured to: Send the configuration for the list of CCs activated across CCs for the joint DL and UL TCI states.

21. The apparatus according to claim 20, wherein, The CC list includes a dedicated CC list for cross-CC activation for the joint DL and UL TCI states.

22. The apparatus according to claim 20, wherein, The CC list is used for cross-CC activation of the DL TCI state or UL TCI state.

23. The apparatus according to claim 14, wherein, The at least one processor and the memory send the activation of the joint DL and UL TCI state in a message, the message indicating the joint TCI state identifier ID and the ID of one or more components of the joint TCI state ID.

24. The apparatus according to claim 23, wherein, The one or more components in the joint TCI status ID include one or more of the following: Reference signal ID, Uplink power control parameters Uplink timing advance parameters, UE panel ID, Antenna port ID, or Beamgroup ID.

25. The apparatus according to claim 14, wherein, The at least one processor and the memory are further configured to send downlink control information (DCI) indicating an index of a TCI code point to the UE, the index corresponding to one of the activated joint DL and UL TCI states.

26. A method for wireless communication at a user equipment (UE), comprising: Receive from the base station activation of the Joint Downlink DL and Uplink UL Transmission Configuration Indicator (TCI) state for component carrier CC, the joint DL and UL TCI state indicating the common beam for communication in DL and UL; and In response to receiving the activation of the joint DL and UL TCI state for the CC, the joint DL and UL TCI state are applied to multiple CCs. The activation is configured to activate a subset of configured joint DL and UL TCI states, each activated joint DL and UL TCI state indicating the common beam used for communication in the DL and UL.

27. The method of claim 26, further comprising: The UE receives a configuration of a list of CCs for cross-CC activation of the joint DL and ULTCI states, wherein the UE applies the joint DL and ULTCI states to each CC included in the CC list.

28. The method of claim 26, further comprising: The base station receives downlink control information (DCI) indicating an index of a TCI code point, the index corresponding to one of the activated joint DL and ULTCI states.

29. A method for wireless communication at a base station, comprising: The configuration includes a list of CCs containing multiple component carriers; as well as The User Equipment (UE) is sent with the activation of a Joint Downlink (DL) and Uplink UL (UL) Transmission Configuration Indicator (TCI) state for each of the plurality of CCs included in the CC list, wherein the Joint DL and UL TCI states indicate a common beam for communication in the DL and UL. The activation is configured to activate a subset of configured joint DL and ULTCI states, each activated joint DL and ULTCI state indicating the common beam used for communication in the DL and UL.

30. The method according to claim 29, wherein, The base station sends the activation of the joint DL and UL TCI state in a message, the message indicating the joint TCI state identifier ID and the ID of one or more components of the joint TCI state ID.

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