DYNAMICALLY UNIFIED TCI SHARING INDICATION FOR CORESET IN mTRP OPERATION

Abstract

A network node can send to a UE an indication of at least one unified TCI state for a first CORESET. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and PDSCH. The network node may be associated with an mTRP operation. The network node can send a message to the UE via the first CORESET based on the at least one unified TCI state. In one configuration, the network node can send to the UE a first indication associated with sharing the at least one unified TCI state between the first CORESET and the PDSCH. The first indication can indicate a number of unified TCI states in the at least one unified TCI state based on a first CORESET type of the first CORESET.

Description

Technical Field

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

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

[0003] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at city, country, region, and even global levels. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of the continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT)) and other requirements. 5GNR includes services associated with enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low latency communication (URLLC). Certain aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. Further improvements to 5G NR technology are needed. In addition, these improvements may also be applicable to other multiple access technologies and telecommunication standards that employ these technologies. Summary of the invention

[0004] A simplified overview of one or more aspects is presented below to provide a basic understanding of these aspects. This summary is not an extensive review of all contemplated aspects. This summary neither identifies the key or important elements of all aspects, nor describes 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 a more detailed description presented later.

[0005] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a user equipment (UE). The apparatus may receive an indication of at least one unified transmit configuration indicator (TCI) state for a first control resource set (CORESET) from a network node. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and a physical downlink shared channel (PDSCH). The network node may be associated with a multiple transmit receive point (mTRP) operation.

[0006] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a network node. The apparatus may send an indication of at least one unified TCI state for a first CORESET to a UE. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and a PDSCH. The network node may be associated with mTRP operation. The apparatus may send a message to the UE via the first CORESET based on the at least one unified TCI state.

[0007] To achieve the aforementioned and related purposes, one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail some exemplary features of one or more aspects. However, these features indicate only some of the various ways in which the principles of the various aspects can be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network.

[0009] Figure 2A is a diagram illustrating an example of a first frame according to various aspects of the present disclosure.

[0010] Figure 2B is a diagram illustrating an example of downlink (DL) channels within a subframe according to various aspects of the present disclosure.

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

[0012] Figure 2D is a diagram illustrating an example of uplink (UL) channels within a subframe according to various aspects of the present disclosure.

[0013] Figure 3 is a diagram illustrating an example of a base station and a user equipment (UE) in an access network.

[0014] Figure 4 The present invention is a diagram showing a communication flow of a wireless communication method.

[0015] Figure 5 is a flow chart of a method of wireless communication.

[0016] Figure 6 is a flow chart of a method of wireless communication.

[0017] Figure 7 is a flow chart of a method of wireless communication.

[0018] Figure 8 is a flow chart of a method of wireless communication.

[0019] Fig. 9 are diagrams illustrating examples of hardware implementations for example apparatuses and / or network entities.

[0020] Fig.10 is a diagram illustrating an example of a hardware implementation for an example network entity. DETAILED DESCRIPTION

[0021] In some configurations, the unified TCI state applicable to PDSCH may be shared with one or more CORESETs. In some configurations, the network node may perform mTRP operation, i.e., the network node may use more than one TRP to communicate with the UE. When performing mTRP operation, the network node may indicate multiple unified TCI states for communication, where the multiple unified TCI states may correspond to multiple TRPs. In addition, some CORESETs may not be used for mTRP operation. Therefore, it may be necessary to specify whether a CORESET may share one or more indicated unified TCI states.

[0022] According to one or more aspects, a network node may send an indication of at least one unified TCI state for a first CORESET to a UE. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and PDSCH. The network node may be associated with mTRP operation. The network node may be able to send a message to the UE via the first CORESET based on the at least one unified TCI state. Thus, it may be specified whether a CORESET may share / use one or more unified TCI states for mTRP operation (e.g., with PDSCH).

[0023] The specific embodiments described below in conjunction with the accompanying drawings are descriptions of various configurations and do not represent the only configurations in which the concepts described herein can be practiced. In order to provide a thorough understanding of the various concepts, the specific embodiments include specific details. However, these concepts can be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid blurring these concepts.

[0024] Several aspects of telecommunication systems are presented with reference to various apparatus and methods. These apparatus and methods are described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as "elements"). These elements may 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 overall system.

[0025] As an example, an element, or any part of an element, or any combination of elements can be implemented as a "processing system", which includes one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic components, discrete hardware circuits, and other suitable hardware configured to perform various functionalities described throughout the present 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 terms, software should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof.

[0026] Therefore, in one or more example aspects, specific implementations and / or use cases, the described functions may be implemented in hardware, software, or any combination thereof. If implemented in software, the functions may be stored or encoded as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media. Storage media may be any available media that can be accessed by a computer. As an example, such computer-readable media 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 instructions or data structures that can be accessed by a computer.

[0027] Although various aspects, specific implementations and / or use cases are described in this application by the illustration of some examples, additional or different aspects, specific implementations and use cases may be generated in many different arrangements and scenarios. The various aspects, specific implementations and / or use cases described herein can be implemented across many different platform types, devices, systems, shapes, sizes and packaging arrangements. For example, various aspects, specific implementations and / or use cases can be generated via integrated chip specific implementations and other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / purchase equipment, medical equipment, devices that enable artificial intelligence (AI), etc.). Although some examples may or may not be specifically for use cases or applications, the described examples may have a wide range of applicability. Various aspects, specific implementations and / or use cases may be in the range from chip-level or modular components to non-modular, non-chip-level specific implementations, and further to the range of aggregated, distributed or original equipment manufacturer (OEM) devices or systems in conjunction with one or more technologies herein. In some actual settings, the equipment combined with the various aspects and features described may also include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals necessarily include multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.) The various techniques described herein can be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated or disaggregated components, end-user devices, etc., of various sizes, shapes, and configurations.

[0028] The deployment of a communication system (such as a 5G NR system) can be arranged in a variety of ways using various components or constituent parts. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a radio access network (RAN) node, a core network node, a network element or network equipment (such as a base station (BS)) or one or more units (or one or more components) performing base station functions can be implemented in an aggregated or decomposed architecture. For example, a BS (such as a Node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a transmit receive point (TRP) or a cell, etc.) can be implemented as an aggregated base station (also referred to as an independent BS or a monolithic BS) or a decomposed base station.

[0029] A converged base station may be configured to utilize a radio protocol stack physically or logically integrated within a single RAN node. A decomposed base station may be configured to utilize a protocol stack physically or logically distributed between two or more units, such as one or more central or centralized units (CUs), one or more distributed units (DUs), or one or more radio units (RUs). In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed in one or more other RAN nodes. A DU may be implemented to communicate with one or more RUs. Each of a CU, a DU, and a RU may be implemented as a virtual unit, i.e., a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU).

[0030] Base station operation or network design may take into account the aggregated nature of base station functionality. For example, a disaggregated base station may be used in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (network configuration such as that initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)). Decomposition may include distributing functions across two or more units at various physical locations, as well as virtually distributing the functions of at least one unit, which may enable flexibility in network design. Various units of a disaggregated base station or disaggregated RAN architecture may be configured for wired or wireless communication with at least one other unit.

[0031] Figure 1 1 is a diagram 100 illustrating an example of a wireless communication system and an access network. The illustrated wireless communication system includes a disaggregated base station architecture. The disaggregated base station architecture may include one or more CUs 110 that may communicate directly with a core network 120 via a backhaul link, or indirectly with the core network 120 through one or more disaggregated base station units, such as a near real-time (near RT) RAN intelligent controller (RIC) 125 via an E2 link, or a non-real-time (non-RT) RIC 115 associated with a service management and orchestration (SMO) framework 105, or both. The CU 110 may communicate with one or more DUs 130 via corresponding midhaul links, such as an F1 interface. The DU 130 may communicate with one or more RUs 140 via corresponding fronthaul links. The RU 140 may communicate with corresponding UEs 104 via one or more radio frequency (RF) access links. In some implementations, a UE 104 may be served simultaneously by multiple RUs 140.

[0032] Each of these units (i.e., CU 110, DU 130, RU 140, and near-RT RIC 125, non-RT RIC 115, and SMO framework 105) may include or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to the communication interface of these units may be configured to communicate with one or more of the other units via a transmission medium. For example, these units may include a wired interface configured to receive signals or send signals to one or more of the other units via a wired transmission medium. Additionally, these units may include a wireless interface that may include a receiver, transmitter, or transceiver (such as an RF transceiver) configured to receive and / or send signals to one or more of the other units via a wireless transmission medium.

[0033] In some aspects, CU 110 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by CU 110. CU 110 may be configured to handle user plane functionality (i.e., central unit-user plane (CU-UP)), control plane functionality (i.e., central unit-control plane (CU-CP)), or a combination thereof. In some specific implementations, CU 110 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, CU 110 may be implemented to communicate with DU 130 for network control and signaling.

[0034] DU 130 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 140. In some aspects, DU 130 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.) at least in part according to a functional split such as those defined by 3GPP. In some aspects, DU 130 may also host one or more low PHY layers. Each layer (or module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by DU 130 or with control functions hosted by CU 110.

[0035] The lower layer functionality may be implemented by one or more RUs 140. In some deployments, the RU 140 controlled by the DU 130 may correspond to a logical node that hosts RF processing functions or low PHY layer functions (such as performing fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming, physical random access channel (PRACH) extraction and filtering, etc.), or both, based at least in part on functional splitting (such as lower layer functional splitting). In such an architecture, the RU 140 may be implemented to handle over-the-air (OTA) communications with one or more UEs 104. In some specific implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU 140 may be controlled by the corresponding DU 130. In some scenarios, this configuration may enable the DU 130 and CU 110 to be implemented in a cloud-based RAN architecture (such as a vRAN architecture).

[0036] The SMO framework 105 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 105 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 105 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 190) to perform network element lifecycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 110, DU 130, RU 140, and near-RT RIC 125. In some specific implementations, the SMO framework 105 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 111) via the O1 interface. Additionally, in some specific implementations, the SMO framework 105 may communicate directly with one or more RUs 140 via the O1 interface. The SMO framework 105 may also include a non-RT RIC 115 configured to support the functionality of the SMO framework 105 .

[0037] The non-RT RIC 115 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence (AI) / machine learning (ML) (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 125. The non-RT RIC 115 may be coupled to or communicate with the near-RT RIC 125 (such as via an A1 interface). The near-RT RIC 125 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 110, one or more DUs 130, or both, and the O-eNB with the near-RT RIC 125.

[0038] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 125, the non-RT RIC 115 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 125 and may be received from a non-network data source or from a network function at the SMO framework 105 or the non-RT RIC 115. In some examples, the non-RT RIC 115 or the near-RT RIC 125 may be configured to adjust RAN behavior or performance. For example, the non-RT RIC 115 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 105 (such as via reconfiguration of O1) or via the creation of RAN management policies (such as A1 policies).

[0039] At least one of the CU 110, the DU 130, and the RU 140 may be referred to as a base station 102. Thus, the base station 102 may include one or more of the CU 110, the DU 130, and the RU 140 (each component is indicated by a dotted line to indicate that each component may or may not be included in the base station 102). The base station 102 provides an access point to the core network 120 for the UE 104. The base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). Small cells include femto cells, pico cells, and micro cells. A network including both small cells and macro cells may be referred to as a heterogeneous network. A heterogeneous network may also include a home evolved Node B (eNB) (HeNB), which may provide services to a restricted group referred to as a closed subscriber group (CSG). The communication link between RU 140 and UE 104 may include uplink (UL) (also known as reverse link) transmission from UE 104 to RU 140 and / or downlink (DL) (also known as forward link) transmission from RU 140 to UE 104. The communication link may use multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming and / or transmit diversity. The communication link may be through one or more carriers. For each carrier allocated in a carrier aggregation of up to YxMHz (x component carriers) for transmission in each direction, the base station 102 / UE 104 may use a spectrum of up to YMHz (e.g., 5MHz, 10MHz, 15MHz, 20MHz, 100MHz, 400MHz, etc.) bandwidth. These carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated to DL than to UL). Component carriers may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell) and the secondary component carrier may be referred to as a secondary cell (SCell).

[0040] Some UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use DL / UL wireless wide area network (WWAN) spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). The D2D communication may be through a variety of wireless D2D communication systems, such as, for example, Bluetooth, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0041] The wireless communication system may also include a Wi-Fi AP 150 that communicates with a UE 104 (also referred to as a Wi-Fi station (STA)) via a communication link 154, for example, in a 5 GHz unlicensed spectrum, etc. When communicating in an unlicensed spectrum, the UE 104 / AP 150 may perform a clear channel assessment (CCA) to determine whether a channel is available prior to communication.

[0042] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc. based on frequency / wavelength. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as the "sub-6 GHz" band in various documents and articles. A similar naming issue sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although different from the extremely high frequency (EHF) band (30 GHz-300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0043] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125GHz-24.25GHz). The bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and therefore the features of FR1 and / or FR2 can be effectively extended to mid-band frequencies. In addition, currently exploring higher frequency bands to extend 5G NR operation to more than 52.6GHz. For example, three higher operating bands have been identified as frequency range designations FR2-2 (52.6GHz-71GHz), FR4 (71GHz-114.25GHz) and FR5 (114.25GHz-300GHz). Each of these higher frequency bands falls within the EHF band.

[0044] In view of the above, unless otherwise specified, if the term "6 GHz or less" is used herein, it may broadly refer to frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specified, if the term "millimeter wave" is used herein, it may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR2-2, and / or FR5, or may be within the EHF band.

[0045] The base station 102 and the UE 104 may each include multiple antennas (such as antenna elements, antenna panels, and / or antenna arrays) to facilitate beamforming. The base station 102 may send a beamformed signal 182 to the UE 104 in one or more transmit directions. The UE 104 may receive the beamformed signal from the base station 102 in one or more receive directions. The UE 104 may also send a beamformed signal 184 to the base station 102 in one or more transmit directions. The base station 102 may receive the beamformed signal from the UE 104 in one or more receive directions. The base station 102 / UE 104 may perform beam training to determine the optimal receive direction and transmit direction for each of the base station 102 / UE 104. The transmit direction and receive direction of the base station 102 may be the same or may not be the same. The transmit direction and receive direction of the UE 104 may be the same or may not be the same.

[0046] The base station 102 may include and / or be referred to as a gNB, a Node B, an eNB, an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmit receive point (TRP), a network node, a network entity, a network equipment, or some other suitable term. The base station 102 may be implemented as an integrated access and backhaul (IAB) node, a relay node, a sidelink node, an aggregated (monolithic) base station with a baseband unit (BBU) (including a CU and a DU) and a RU, or as a decomposed base station including one or more of a CU, a DU, and / or a RU. A set of base stations that may include decomposed base stations and / or aggregated base stations may be referred to as a next generation (NG) RAN (NG-RAN).

[0047] The core network 120 may include an access and mobility management function (AMF) 161, a session management function (SMF) 162, a user plane function (UPF) 163, a unified data management (UDM) 164, one or more location servers 168, and other functional entities. AMF 161 is a control node that handles signaling between UE 104 and the core network 120. AMF 161 supports registration management, connection management, mobility management, and other functions. SMF 162 supports session management and other functions. UPF 163 supports packet routing, packet forwarding, and other functions. UDM 164 supports the generation of authentication and key agreement (AKA) credentials, user identity handling, access authorization, and subscription management. One or more location servers 168 are illustrated as including a gateway mobile location center (GMLC) 165 and a location management function (LMF) 166. However, in general, the one or more location servers 168 may include one or more location / positioning servers, which may include one or more of the GMLC 165, LMF 166, position determination entity (PDE), serving mobile location center (SMLC), mobile positioning center (MPC), etc. GMLC 165 and LMF 166 support UE location services. GMLC 165 provides an interface for clients / applications (e.g., emergency services) to access UE positioning information. LMF 166 receives measurement and assistance information from NG-RAN and UE 104 via AMF 161 to calculate the location of UE 104. NG-RAN may determine the location of UE 104 using one or more positioning methods. Positioning UE 104 may involve signal measurements, position estimation, and optional speed calculation based on these measurements. Signal measurements may be performed by UE 104 and / or serving base station 102. The measured signals may be based on a satellite positioning system (SPS) 170 (e.g., one or more of a global navigation satellite system (GNSS), a global positioning system (GPS), a non-terrestrial network (NTN), or other satellite positioning / location systems), LTE signals, wireless local area network (WLAN) signals, Bluetooth signals, a terrestrial beacon system (TBS), sensor-based information (e.g., an atmospheric pressure sensor, a motion sensor), an NR enhanced cell ID (NR E-CID) method, NR signals (e.g., multi-round trip time (multi-RTT), DL angle of departure (DL-AoD), DL time difference of arrival (DL-TDOA), UL time difference of arrival (UL-TDOA), and UL angle of arrival (UL-AoA) positioning), and / or one or more of other systems / signals / sensors.

[0048] Examples of UE 104 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablet computers, smart devices, wearable devices, vehicles, electric meters, gas pumps, large or small kitchen appliances, healthcare equipment, implants, sensors / actuators, displays, or any other similarly functional devices. Some of the UEs 104 may be referred to as IoT devices (e.g., parking meters, gas pumps, toasters, vehicles, heart monitors, etc.). UE 104 may also be referred to as stations, mobile stations, subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals, mobile phones, user agents, mobile clients, clients, or some other suitable terminology. In some scenarios, the term "UE" may also be applied to one or more supporting devices, such as in a device constellation arrangement. One or more of these devices may access the network collectively and / or individually.

[0049] Reference again Figure 1 In certain aspects, the UE 104 may include a TCI component 198 that may be configured to receive an indication of at least one unified TCI state for a first CORESET from a network node. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and the PDSCH. The network node may be associated with mTRP operation. The TCI component 198 may be configured to receive a message from the network node via the first CORESET based on the at least one unified TCI state. In certain aspects, the base station 102 may include a TCI component 199 that may be configured to send an indication of at least one unified TCI state for the first CORESET to the UE. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and the PDSCH. The network node may be associated with mTRP operation. The TCI component 199 may be configured to send a message to the UE via the first CORESET based on the at least one unified TCI state. Although the following description may focus on 5G NR, the concepts described herein may be applicable to other similar areas such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0050] Figure 2A FIG200 is a diagram illustrating an example of a first subframe within a 5G NR frame structure. Figure 2B FIG230 is a diagram illustrating an example of DL channels within a 5G NR subframe. Figure 2C FIG250 is a diagram illustrating an example of a second subframe within a 5G NR frame structure. Figure 2D FIG280 is a diagram illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplex (FDD) (wherein for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to either DL or UL), or may be time division duplex (TDD) (wherein for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to both DL and UL). Figure 2A , Figure 2C In the example provided, 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 to 61. Slot formats 0 and 1 are full DL and full UL, respectively. Other slot formats 2 to 61 include a mix of DL, UL and flexible symbols. The UE is configured with the slot format through the received slot format indicator (SFI) (dynamically configured through DL control information (DCI) or semi-statically / statically configured through radio resource control (RRC) signaling). Note that the following description also applies to the 5GNR frame structure as TDD.

[0051] FIG. 2A to FIG. 2D The frame structure is illustrated, and various aspects of the present disclosure may be applicable to other wireless communication technologies that may have different frame structures and / or different channels. A frame (10ms) may be divided into 10 equally sized subframes (1ms). Each subframe may include one or more time slots. A subframe may also include a microslot, 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 a normal CP, each time slot may include 14 symbols, and for an extended CP, each time slot may include 12 symbols. The symbol on the DL may be a CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbol. The symbol on the UL may be a CP-OFDM symbol (for high throughput scenarios) or a discrete Fourier transform (DFT) extended OFDM (DFT-s-OFDM) symbol (for power-constrained scenarios; limited to single-stream transmission). The number of time slots within a subframe is based on the CP and parameter set. The parameter set defines the subcarrier spacing (SCS) (see Table 1). The symbol length / duration can be scaled by 1 / SCS.

[0052]

[0053] Table 1: Parameter set, SCS and CP

[0054] For normal CP (14 symbols / slot), different parameter sets μ0 to 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For extended CP, parameter set 2 allows 4 slots per subframe. Thus, for normal CP and parameter set μ, there are 14 symbols / slot and 2 μ timeslots / subframe. The subcarrier spacing can be equal to 2 μ *15kHz, where μ is parameter set 0 to 4. Therefore, the subcarrier spacing for parameter set μ=0 is 15kHz, and the subcarrier spacing for parameter set μ=4 is 240kHz. The symbol length / duration is inversely related to the subcarrier spacing. FIG. 2A to FIG. 2D An example of a parameter set μ=2 with a normal CP of 14 symbols per slot and 4 slots per subframe is provided. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is about 16.67 μs. Within a frame set, there may be one or more different bandwidth parts (BWPs) that are frequency-division multiplexed (see Figure 2B ). Each BWP may have a specific parameter set and CP (normal or extended).

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

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

[0057] Figure 2BExamples of various DL channels within a subframe of a frame are illustrated. A 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 including six RE groups (REGs), each REG including 12 consecutive REs in an OFDM symbol of an RB. A PDCCH within a BWP may be referred to as a control resource set (CORESET). The UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., a common search space, a UE-specific search space) during a PDCCH monitoring opportunity on a CORESET, wherein the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at higher and / or lower frequencies on the channel bandwidth. A primary synchronization signal (PSS) may be within symbol 2 of a particular subframe of a frame. The PSS is used by UE 104 to determine subframe / symbol timing and physical layer identification. A secondary synchronization signal (SSS) may be within symbol 4 of a particular subframe of a frame. The SSS is used by the UE to determine the physical layer cell identity group number and the radio frame timing. Based on the physical layer identity and the physical layer cell identity 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 be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as an SS block (SSB)). The MIB provides the number of RBs in the system bandwidth and the system frame number (SFN). The physical downlink shared channel (PDSCH) carries user data, broadcast system information not sent via the PBCH (such as a system information block (SIB)), and paging messages.

[0058] like Figure 2C As illustrated, some of the REs carry DM-RS (indicated as R for a particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE may send a DM-RS for a physical uplink control channel (PUCCH) and a DM-RS for a physical uplink shared channel (PUSCH). The PUSCH DM-RS may be sent in the first or first two symbols of the PUSCH. Depending on whether a short PUCCH or a long PUCCH is sent and depending on the specific PUCCH format used, the PUCCH DM-RS may be sent in different configurations. The UE may send a sounding reference signal (SRS). The SRS may be sent in the last symbol of a subframe. The SRS may have a comb structure, and the UE may send the SRS on one of the teeth of the comb. The SRS may be used by the base station for channel quality estimation to achieve frequency-dependent scheduling of the UL.

[0059] Figure 2DExamples of various UL channels within a subframe of a frame are illustrated. The PUCCH may be located at a position 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) acknowledgement (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACKs and / or negative ACKs (NACKs)). The PUSCH carries data and may be used to carry, among other things, buffer status reports (BSRs), power headroom reports (PHRs), and / or UCI.

[0060] Figure 3 370 is a block diagram of a base station 310 communicating with a UE 350 in an access network. In the DL, Internet Protocol (IP) packets may be provided to a controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with delivery of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0061] The transmit (TX) processor 316 and receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1 (which includes the physical (PHY) layer) may include error detection on the transport channel, forward error correction (FEC) coding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. The TX processor 316 handles the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-order phase shift keying (M-PSK), M-order quadrature amplitude modulation (M-QAM)). The decoded and modulated symbols can then be divided into parallel streams. Subsequently, each stream can be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then combined using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially pre-coded to generate multiple spatial streams. Channel estimates from a channel estimator 374 may be used to determine the coding and modulation schemes, as well as for spatial processing. Channel estimates may be derived from reference signals and / or channel state feedback sent by the UE 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318Tx. Each transmitter 318Tx may modulate a radio frequency (RF) carrier for transmission using a corresponding spatial stream.

[0062] At the UE 350, each receiver 354Rx receives a signal through its corresponding antenna 352. Each receiver 354Rx recovers the information modulated onto the RF carrier and provides the information to a receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial stream destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be merged into a single OFDM symbol stream by the RX processor 356. The RX processor 356 then converts the OFDM symbol stream from the time domain to the frequency domain using a fast Fourier transform (FFT). The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier and the reference signal are recovered and demodulated by determining the most likely signal constellation point sent by the base station 310. These soft decisions can be based on channel estimates calculated by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally sent on the physical channel by the base station 310. The data and control signals are then provided to a controller / processor 359, which implements layer 3 and layer 2 functionality.

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

[0064] Similar to the functionality described in conjunction with DL transmissions performed by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functionality associated with delivery of upper layer PDUs, error correction through ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0065] The TX processor 368 may use channel estimates derived by the channel estimator 358 from a reference signal or feedback sent by the base station 310 to select appropriate coding and modulation schemes and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antennas 352 via corresponding transmitters 354Tx. Each transmitter 354Tx may modulate an RF carrier with a corresponding spatial stream for transmission.

[0066] UL transmissions are processed at the base station 310 in a manner similar to that described in conjunction with the receiver functionality at the UE 350. Each receiver 318Rx receives a signal through its respective antenna 320. Each receiver 318Rx recovers information modulated onto an 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 codes and data. The memory 376 may be referred to as a computer readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport channels and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover IP packets. The controller / processor 375 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0068] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to perform operations related to Figure 1 The TCI component 198 combines various aspects.

[0069] At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to perform operations related to Figure 1 The TCI component 199 combines various aspects.

[0070] If the properties of the channel on which the symbols on one antenna port are conveyed can be inferred from the channel on which the symbols on the other antenna port are conveyed, the two antenna ports can be referred to as quasi co-located (QCLed). The TCI state can be used by the network node to configure the UE. The TCI state can specify the quasi co-located (QCL) relationship between the first antenna port through which the source RS (which may also be referred to as the RS of the TCI state in this article) is sent and the second antenna port through which another communication is sent. Therefore, the UE can communicate with the network node (in the downlink or uplink) based on the source RS and the TCI state. In addition, the unified TCI framework can support TCI states for downlink and / or uplink. For example, the unified TCI state can be a "downlink or joint" TCI state ("DLorJointTCIState") or an "uplink" TCI state ("ULTCIState").

[0071] For example, the network node may configure the UE with a set of TCI states (e.g., via RRC signaling). In addition, the network node may activate a subset of TCI states within the configured TCI state set (e.g., via a medium access control-control element (MAC-CE)). Each of the activated TCI states (or activated TCI state sets for mTRP operation) may be referred to as a code point. The network node may indicate one of the activated TCI states (activated TCI state set) to be used for transmission (i.e., selecting a code point) (e.g., via a DCI message).

[0072] In some configurations, the unified TCI state applicable to PDSCH may also be shared with one or more CORESETs. The sharing of TCI states with CORESETs may be configured via RRC signaling. In some configurations, the network node may perform mTRP operation, i.e., the network node may use more than one TRP to communicate with the UE. When performing mTRP operation, the network node may indicate multiple unified TCI states for communication, where multiple unified TCI states may correspond to multiple TRPs. In addition, some CORESETs may not be used for mTRP operation. Therefore, it may be necessary to specify whether a CORESET may share one or more indicated unified TCI states (e.g., with PDSCH) (i.e., whether one or more indicated unified TCI states are available for a CORESET).

[0073] In some configurations, a UE may be configured with a CORESET associated with up to 4 CORESET types. The CORESET types may include: 1) a CORESET with only a UE-specific search space (USS) (i.e., without any common search space (CSS) (associated with the UE-specific search space) (or simply referred to herein as a "CORESET with USS"), 2) a CORESET with only a CSS (i.e., without any USS) (associated with the CSS) (or simply referred to herein as a "CORESET with CSS"), 3) a CORESET with both a CSS and a USS (associated with the CSS and the USS) (but excluding CORESET#0), and 4) CORESET#0. It may be specified whether a CORESET belonging to a particular CORESET type may share one or more indicated unified TCI states with a PDSCH.

[0074] Figure 4 4 is a diagram of a communication flow 400 of a method of wireless communication. As shown, UE 402 may implement aspects of UE 104 / 350. In addition, network node 404 may implement aspects of base station 102 / 310. Network node 404 may be associated with mTRP operation. In one configuration, at 406, network node 404 may send a first indication associated with sharing at least one unified TCI state between a first CORESET and a PDSCH to UE 402. The first indication can indicate a number of unified TCI states in the at least one unified TCI state based on a first CORESET type of the first CORESET.

[0075] In one configuration, at 406, the first indication may be sent via RRC signaling.

[0076] In one configuration, the first indication (sent via RRC signaling) may be associated with a CORESET, a CORESET group, a CORESET type, a TCI state, or a TCI state group. In particular, each TCI state or TCI state group may be configured (e.g., via RRC signaling) with an applicable CORESET type or CORESET group.

[0077] In one configuration, at 406, the first indication may be sent in a MAC-CE.

[0078] In one configuration, the MAC-CE may be a dedicated MAC-CE (ie, the MAC-CE may not include an additional indication).

[0079] In one configuration, the MAC-CE may also include a second indication for unified TCI state activation (i.e., the MAC-CE may be the same MAC-CE used to activate the TCI state codepoint). Thus, the same MAC-CE may activate one or more unified TCI states and may indicate the applicable CORESET type for the activated unified TCI state. For example, the first TCI state in the codepoint may be indicated for all 4 CORESET types, and the second TCI state in the codepoint may be indicated for a CORESET with only USS.

[0080] In one configuration, the first indication may be sent in a DCI message.

[0081] In one configuration, the first indication may be included in a dedicated DCI field.

[0082] In one configuration, the DCI message may also include a third indication for TCI state codepoint selection (i.e., the DCI message may be the same DCI message used to indicate the TCI state codepoint). Thus, the same DCI message may indicate the codepoint used for transmission and may indicate the applicable CORESET type (which may correspond to an activated unified TCI state or an activated unified TCI state set) for the indicated codepoint. For example, a first TCI state in the indicated codepoint may be indicated for all 4 CORESET types, and a second TCI state in the indicated codepoint may be indicated for a CORESET with only USS.

[0083] At 408, the network node 404 may send an indication of at least one unified TCI state for the first CORESET to the UE 402. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and the PDSCH.

[0084] In one configuration, whether a CORESET (e.g., a first CORESET) belonging to a particular CORESET type may share one or more indicated unified TCI states (e.g., with a PDSCH) may be based on a default or predetermined rule. A CORESET that may share one or more indicated unified TCI states (e.g., with a PDSCH) may not include any CSS (i.e., only CORESETs with only a USS may share one or more indicated unified TCI states). In other words, the first CORESET may not be a CORESET with a CSS.

[0085] In one configuration, whether a CORESET (e.g., a first CORESET) belonging to a particular CORESET type may share one or more indicated unified TCI states may be signaled by the network node 404. In one example configuration, the first CORESET may be a CORESET with a CSS or a CORESET with both a CSS and a USS, but excluding CORESET#0. The at least one unified TCI state may include a single unified TCI state in a TCI state code point. In other words, based on signaling from the network node 404, a single unified TCI state may be shared between the first CORESET and the PDSCH. For example, based on an indication (e.g., via RRC signaling), when a TCI state code point is associated with a single TCI, a CORESET with only a CSS and a CORESET with both a CSS and a USS (but excluding CORESET#0) may share the indicated TCI state (e.g., with the PDSCH).

[0086] In one example configuration, the first CORESET may be a CORESET with USS. Based on signaling from the network node 404, each of the unified TCI states indicated by one or more of the TCI state code points may be shared between the first CORESET and the PDSCH. In one configuration, the at least one unified TCI state may include multiple unified TCI states. For another example, based on an indication (e.g., via RRC signaling), when the TCI state code point is associated with a single TCI state or multiple TCI states, the CORESET with only USS may share the indicated TCI state (e.g., with the PDSCH).

[0087] In one configuration, in addition to the network node signaling indicating whether a CORESET (e.g., a first CORESET) belonging to a particular CORESET type may share one or more indicated unified TCI states, the sharing of TCI states by the CORESETs may also be subject to additional rules. In one example, the additional rules may specify that when a TCI state code point is associated with a single TCI state, the CORESET associated with a CSS (e.g., CORESET#0 with search space set (SS) #0 for a type 0 / 0A / 2 CSS) may share the indicated unified TCI state (e.g., with a PDSCH). In other words, the first CORESET may be CORESET#0. At least one unified TCI state may include a single unified TCI state. For example, CORESET#0 with SS#0 for a type 0 / 0A / 2 CSS (e.g., a first CORESET) may be indicated to share one indicated TCI state with a PDSCH.

[0088] In another example, additional rules may provide that a CORESET not associated with a CSS may share a unified TCI state of multiple indications in a TCI state code point, and a CORESET associated with a CSS may use / share a single unified TCI state from multiple indicated unified states in a TCI state code point for the CSS, wherein the UE may use the single unified TCI state available for the CORESET associated with the CSS to determine the SS timing based on the SSB resources from the root QCL resources in the TCI state. In other words, in an example configuration, the first CORESET may be a CORESET with a CSS or a CORESET with both a CSS and a USS, except for CORESET#0. At least one unified TCI state may include multiple unified TCI states. In addition, at 410, a message may be sent via the first CORESET based on a single unified TCI state from the multiple unified TCI states. In another example configuration, CORESET#0 (e.g., the first CORESET) may be configured to share a single indicated unified TCI state when CORESET#0 is associated with SS#0 for a type 0 / 01 / 2 CSS (e.g., with PDSCH). The first CORESET may use / share a single "downlink or joint" TCI state among multiple indicated unified states.

[0089] At 410, the network node 404 may send a message to the UE 402 via the first CORESET based on at least one unified TCI state.

[0090] In one or more configurations, a CORESET associated with a CSS may not be instructed (eg, by the network node 404) to share / use a TCI state associated with a non-serving cell PCI (eg, with a PDSCH).

[0091] Figure 5 500 is a flow chart of a method of wireless communication. The method may be performed by a UE (e.g., UE 104 / 350 / 402; device 904). At 502, the UE may receive an indication of at least one unified TCI state for a first CORESET from a network node. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and PDSCH. The network node may be associated with mTRP operation. For example, 502 may be performed by Fig. 9 Component 198 in the implementation. Figure 4 At 408, UE 402 may receive from network node 404 an indication of at least one unified TCI state for the first CORESET.

[0092] At 504, the UE may receive a message from a network node via a first CORESET based on at least one unified TCI state. For example, 504 may be Fig. 9 Component 198 in the implementation. Figure 4 At 410, UE 402 may receive a message from network node 404 via a first CORESET based on at least one unified TCI state.

[0093] Figure 6 600 is a flow chart of a method of wireless communication. The method may be performed by a UE (e.g., UE 104 / 350 / 402; device 904). At 604, the UE may receive an indication of at least one unified TCI state for a first CORESET from a network node. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and PDSCH. The network node may be associated with mTRP operation. For example, 604 may be performed by Fig. 9 Component 198 in the implementation. Figure 4 At 408, UE 402 may receive from network node 404 an indication of at least one unified TCI state for the first CORESET.

[0094] At 606, the UE may receive a message from a network node via a first CORESET based on at least one unified TCI state. For example, 606 may be Fig. 9 Component 198 in the implementation. Figure 4At 410, UE 402 may receive a message from network node 404 via a first CORESET based on at least one unified TCI state.

[0095] In one configuration, the first CORESET may not be the CORESET with the CSS.

[0096] In one configuration, at 602, the UE may receive from a network node a first indication associated with sharing at least one unified TCI state between a first CORESET and a PDSCH. The first indication may indicate a number of unified TCI states in the at least one unified TCI state based on a first CORESET type of the first CORESET. For example, 602 may be Fig. 9 Component 198 in the implementation. Figure 4 At 406, the UE 402 may receive, from the network node 404, a first indication associated with sharing at least one unified TCI state between the first CORESET and the PDSCH.

[0097] In one configuration, the first CORESET may be a CORESET with a CSS or a CORESET with both a CSS and a USS, except for CORESET #0. The at least one unified TCI state may include a single unified TCI state.

[0098] In one configuration, the first CORESET may be a CORESET with a USS.

[0099] In one configuration, at least one unified TCI state may include a plurality of unified TCI states.

[0100] In one configuration, the first CORESET may be CORESET # 0. The at least one unified TCI state may include a single unified TCI state.

[0101] In one configuration, the first CORESET may be a CORESET with a CSS or a CORESET with both a CSS and a USS, except for CORESET#0. The at least one unified TCI state may include a plurality of unified TCI states. The message may be received via the first CORESET based on a single unified TCI state of the plurality of unified TCI states.

[0102] In one configuration, the first indication may be received via RRC signaling.

[0103] In one configuration, the first indication may be associated with a CORESET, a CORESET group, a CORESET type, a TCI state, or a TCI state group.

[0104] In one configuration, the first indication may be received in a MAC message.

[0105] In one configuration, the MAC-CE may also include a second indication for unified TCI state activation.

[0106] In one configuration, the first indication may be received in a DCI message.

[0107] In one configuration, the DCI message may also include a third indication for codepoint selection.

[0108] Figure 7 700 is a flow chart of a method of wireless communication. The method may be performed by a base station (e.g., base station 102 / 310; network node 404; network entity 902). At 702, the network node may send an indication of at least one unified TCI state for a first CORESET to a UE. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and PDSCH. The network node may be associated with mTRP operation. For example, 702 may be performed by Fig.10 Component 199 in the reference Figure 4 At 408, the network node 404 may send an indication of at least one unified TCI state for the first CORESET to the UE 402.

[0109] At 704, the network node may send a message to the UE via the first CORESET based on at least one unified TCI state. For example, 704 may be performed by Fig.10 Component 199 in the reference Figure 4 At 410, the network node 404 may send a message to the UE 402 via the first CORESET based on at least one unified TCI state.

[0110] Figure 8 800 is a flow chart of a method of wireless communication. The method may be performed by a base station (e.g., base station 102 / 310; network node 404; network entity 902). At 804, the network node may send an indication of at least one unified TCI state for a first CORESET to a UE. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and PDSCH. The network node may be associated with mTRP operation. For example, 804 may be performed by Fig.10 Component 199 in the reference Figure 4 At 408, the network node 404 may send an indication of at least one unified TCI state for the first CORESET to the UE 402.

[0111] At 806, the network node may send a message to the UE via the first CORESET based on at least one unified TCI state. For example, 806 may be performed by Fig.10 Component 199 in the reference Figure 4 At 410, the network node 404 may send a message to the UE 402 via the first CORESET based on at least one unified TCI state.

[0112] In one configuration, the first CORESET may not be the CORESET with the CSS.

[0113] In one configuration, at 802, the network node may send a first indication associated with sharing at least one unified TCI state between a first CORESET and a PDSCH to the UE. The first indication may indicate a number of unified TCI states in the at least one unified TCI state based on a first CORESET type of the first CORESET. For example, 802 may be Fig.10 Component 199 in the reference Figure 4 At 406, the network node 404 may send to the UE 402 a first indication associated with sharing at least one unified TCI state between the first CORESET and the PDSCH.

[0114] In one configuration, the first CORESET may be a CORESET with a CSS or a CORESET with both a CSS and a USS, except for CORESET #0. The at least one unified TCI state may include a single unified TCI state.

[0115] In one configuration, the first CORESET may be a CORESET with a USS.

[0116] In one configuration, at least one unified TCI state may include a plurality of unified TCI states.

[0117] In one configuration, the first CORESET may be CORESET # 0. The at least one unified TCI state may include a single unified TCI state.

[0118] In one configuration, the first CORESET may be a CORESET with a CSS or a CORESET with both a CSS and a USS, except for CORESET#0. The at least one unified TCI state may include a plurality of unified TCI states. The message may be sent via the first CORESET based on a single unified TCI state of the plurality of unified TCI states.

[0119] In one configuration, the first indication may be sent via RRC signaling.

[0120] In one configuration, the first indication may be associated with a CORESET, a CORESET group, a CORESET type, a TCI state, or a TCI state group.

[0121] In one configuration, the first indication may be sent in a MAC message.

[0122] In one configuration, the MAC-CE may also include a second indication for unified TCI state activation.

[0123] In one configuration, the first indication may be sent in a DCI message.

[0124] In one configuration, the DCI message may also include a third indication for codepoint selection.

[0125] Fig. 9900 is a diagram illustrating an example of a hardware implementation for an apparatus 904. The apparatus 904 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 904 may include a cellular baseband processor 924 (also referred to as a modem) coupled to one or more transceivers 922 (e.g., a cellular RF transceiver). The cellular baseband processor 924 may include on-chip memory 924'. In some aspects, the apparatus 904 may also include one or more subscriber identity module (SIM) cards 920 and an application processor 906 coupled to a secure digital (SD) card 908 and a screen 910. The application processor 906 may include on-chip memory 906'. In some aspects, the device 904 may also include a Bluetooth module 912, a WLAN module 914, an SPS module 916 (e.g., a GNSS module), one or more sensor modules 918 (e.g., an atmospheric pressure sensor / altimeter; a motion sensor such as an inertial measurement unit (IMU), a gyroscope, and / or an accelerometer; light detection and ranging (LIDAR), radio-aided detection and ranging (RADAR), sound navigation and ranging (SONAR), a magnetometer, audio, and / or other technologies for positioning), an additional memory module 926, a power supply 930, and / or a camera 932. The Bluetooth module 912, the WLAN module 914, and the SPS module 916 may include an on-chip transceiver (TRX) (or in some cases, only a receiver (RX)). The Bluetooth module 912, the WLAN module 914, and the SPS module 916 may include their own dedicated antennas and / or communicate using an antenna 980. The cellular baseband processor 924 communicates with the UE 104 and / or the RU associated with the network entity 902 through the transceiver 922 via one or more antennas 980. The cellular baseband processor 924 and the application processor 906 may each include a computer-readable medium / memory 924', 906', respectively. The additional memory module 926 may also be considered as a computer-readable medium / memory. Each computer-readable medium / memory 924', 906', 926 may be non-transitory. The cellular baseband processor 924 and the application processor 906 are each responsible for general processing, including executing software stored on a computer-readable medium / memory. The software enables the cellular baseband processor 924 / application processor 906 to perform the various functions described above when executed by the cellular baseband processor 924 / application processor 906. The computer-readable medium / memory can also be used to store data manipulated by the cellular baseband processor 924 / application processor 906 when executing the software. The cellular baseband processor 924 / application processor 906 may be a component of the UE 350 and may include the memory 360 and / or at least one of the TX processor 368 , the RX processor 356 , and the controller / processor 359 .In one configuration, the device 904 may be a processor chip (modem and / or applications) and include only the cellular baseband processor 924 and / or the application processor 906, while in another configuration, the device 904 may be an entire UE (eg, see. Figure 3 350) and includes additional modules of device 904.

[0126] As discussed above, component 198 is configured to receive an indication of at least one unified TCI state for a first CORESET from a network node. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and the PDSCH. The network node may be associated with mTRP operation. Component 198 is configured to receive a message from a network node via the first CORESET based on at least one unified TCI state. Component 198 may be within a cellular baseband processor 924, an application processor 906, or both a cellular baseband processor 924 and an application processor 906. Component 198 may be one or more hardware components specifically configured to perform the process / algorithm, implemented by one or more processors configured to perform the process / algorithm, stored in a computer-readable medium so as to be implemented by one or more processors, or some combination thereof. As shown, the device 904 may include a variety of components configured for various functions. In one configuration, the apparatus 904, and in particular the cellular baseband processor 924 and / or the application processor 906, includes means for receiving an indication of at least one unified TCI state for a first CORESET from a network node. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and the PDSCH. The network node may be associated with mTRP operation. The apparatus 904, and in particular the cellular baseband processor 924 and / or the application processor 906, includes means for receiving a message from the network node via the first CORESET based on the at least one unified TCI state.

[0127] In one configuration, the first CORESET may not be a CORESET with CSS. In one configuration, the device 904, and in particular the cellular baseband processor 924 and / or the application processor 906, includes a component for receiving a first indication associated with sharing at least one unified TCI state between the first CORESET and the PDSCH from a network node. The first indication can indicate the number of unified TCI states in the at least one unified TCI state based on the first CORESET type of the first CORESET. In one configuration, the first CORESET may be a CORESET with CSS or a CORESET with both CSS and USS, but CORESET#0. At least one unified TCI state may include a single unified TCI state. In one configuration, the first CORESET may be a CORESET with USS. In one configuration, at least one unified TCI state may include multiple unified TCI states. In one configuration, the first CORESET may be CORESET#0. At least one unified TCI state may include a single unified TCI state. In one configuration, the first CORESET may be a CORESET with a CSS or a CORESET with both a CSS and a USS, except CORESET#0. At least one unified TCI state may include multiple unified TCI states. A message may be received via the first CORESET based on a single unified TCI state in multiple unified TCI states. In one configuration, the first indication may be received via RRC signaling. In one configuration, the first indication may be associated with a CORESET, a CORESET group, a CORESET type, a TCI state, or a TCI state group. In one configuration, the first indication may be received in a MAC message. In one configuration, the MAC-CE may also include a second indication for unified TCI state activation. In one configuration, the first indication may be received in a DCI message. In one configuration, the DCI message may also include a third indication for code point selection.

[0128] A means may be a component 198 of the apparatus 904 configured to perform the functions recited by the means. As described above, the apparatus 904 may include the TX processor 368, the RX processor 356, and the controller / processor 359. Thus, in one configuration, a means may be the TX processor 368, the RX processor 356, and / or the controller / processor 359 configured to perform the functions recited by the means.

[0129] Fig.101000 is a diagram illustrating an example of a hardware implementation for a network entity 1002. The network entity 1002 may be a BS, a component of a BS, or may implement BS functionality. The network entity 1002 may include at least one of a CU 1010, a DU 1030, or a RU 1040. For example, depending on the layer functionality handled by the component 199, the network entity 1002 may include a CU 1010; both a CU 1010 and a DU 1030; each of the CU 1010, the DU 1030, and the RU 1040; the DU 1030; both the DU 1030 and the RU 1040; or the RU 1040. The CU 1010 may include a CU processor 1012. The CU processor 1012 may include an on-chip memory 1012'. In some aspects, the CU 1010 may also include an additional memory module 1014 and a communication interface 1018. CU 1010 communicates with DU 1030 via a midhaul link, such as an F1 interface. DU 1030 may include a DU processor 1032. DU processor 1032 may include on-chip memory 1032'. In some aspects, DU 1030 may also include an additional memory module 1034 and a communication interface 1038. DU 1030 communicates with RU 1040 via a fronthaul link. RU 1040 may include a RU processor 1042. RU processor 1042 may include on-chip memory 1042'. In some aspects, RU 1040 may also include an additional memory module 1044, one or more transceivers 1046, an antenna 1080, and a communication interface 1048. RU 1040 communicates with UE 104. On-chip memory 1012', 1032', 1042' and additional memory modules 1014, 1034, 1044 may each be considered a computer-readable medium / memory. Each computer readable medium / memory may be non-transitory. Each of the processors 1012, 1032, 1042 is responsible for general processing, including executing software stored on the computer readable medium / memory. The software, when executed by the corresponding processor, causes the processor to perform the various functions described above. The computer readable medium / memory may also be used to store data manipulated by the processor when executing the software.

[0130] As discussed above, component 199 is configured to send an indication of at least one unified TCI state for a first CORESET to a UE. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and the PDSCH. The network node may be associated with mTRP operation. Component 199 is configured to send a message to the UE via the first CORESET based on at least one unified TCI state. Component 199 may be within one or more processors of one or more of CU 1010, DU 1030, and RU 1040. Component 199 may be one or more hardware components specifically configured to perform the process / algorithm, implemented by one or more processors configured to perform the process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. The network entity 1002 may include a variety of components configured for various functions. In one configuration, the network entity 1002 includes a component for sending an indication of at least one unified TCI state for a first CORESET to a UE. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and the PDSCH. The network node may be associated with mTRP operation. The network entity 1002 includes a component for sending a message to the UE via the first CORESET based on the at least one unified TCI state.

[0131] In one configuration, the first CORESET may not be a CORESET with CSS. In one configuration, the network entity 1002 includes a component for sending a first indication associated with sharing at least one unified TCI state between the first CORESET and the PDSCH to the UE. The first indication can indicate the number of unified TCI states in the at least one unified TCI state based on the first CORESET type of the first CORESET. In one configuration, the first CORESET may be a CORESET with CSS or a CORESET with both CSS and USS, but excluding CORESET#0. At least one unified TCI state may include a single unified TCI state. In one configuration, the first CORESET may be a CORESET with USS. In one configuration, at least one unified TCI state may include multiple unified TCI states. In one configuration, the first CORESET may be CORESET#0. At least one unified TCI state may include a single unified TCI state. In one configuration, the first CORESET may be a CORESET with CSS or a CORESET with both CSS and USS, but excluding CORESET#0. At least one unified TCI state may include multiple unified TCI states. The message may be sent via a first CORESET based on a single unified TCI state in the multiple unified TCI states. In one configuration, the first indication may be sent via RRC signaling. In one configuration, the first indication may be associated with a CORESET, a CORESET group, a CORESET type, a TCI state, or a TCI state group. In one configuration, the first indication may be sent in a MAC message. In one configuration, the MAC-CE may also include a second indication for unified TCI state activation. In one configuration, the first indication may be sent in a DCI message. In one configuration, the DCI message may also include a third indication for code point selection.

[0132] A means may be a component 199 of the network entity 1002 configured to perform the functions recited by the means. As described above, the network entity 1002 may include the TX processor 316, the RX processor 370, and the controller / processor 375. Thus, in one configuration, a means may be the TX processor 316, the RX processor 370, and / or the controller / processor 375 configured to perform the functions recited by the means.

[0133] Return to reference Figures 4 to 10, the network node may send an indication of at least one unified TCI state for the first CORESET to the UE. The at least one unified TCI state may be a shared unified TCI state for at least the first CORESET and the PDSCH. The network node may be associated with mTRP operation. The network node is capable of sending a message to the UE via the first CORESET based on the at least one unified TCI state. Thus, it may be specified whether a CORESET may share / use one or more unified TCI states for mTRP operation (e.g., with the PDSCH).

[0134] It should be understood that the specific order or hierarchy of the blocks in the disclosed process / flowchart is merely an illustration of the exemplary method. It should be understood that the specific order or hierarchy of the blocks in the process / flowchart may be rearranged based on design preferences. Further, some blocks may be combined or omitted. The attached method claims provide the elements of the various blocks in a sample order, but are not limited to the specific order or hierarchy provided.

[0135] The foregoing description is provided to enable any person skilled in the art to practice 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 may be applied to other aspects. Therefore, the claims are not limited to the various aspects described herein, but should be given the full scope consistent with the language claims. Unless otherwise specified, reference to an element in the singular form does not mean "one and only one", but "one or more". Terms such as "if", "when" and "while" do not mean a direct temporal relationship or reaction. That is, these phrases, such as "when ......", do not mean an immediate action in response to the occurrence of an action or during the occurrence of an action, but simply imply that if the conditions are met, then the action will occur, but no specific or immediate time limit is required for the occurrence of the action. The word "exemplary" is used herein to mean "used as an example, instance or illustration". Any aspect described as "exemplary" herein is not necessarily interpreted as being preferred or having advantages over other aspects. Unless otherwise specified, the term "some" refers to one or more. Combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" include any combination of A, B, and / or C, which may include multiple A, multiple B, or multiple C. Specifically, combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" may be only A, only B, only C, A and B, A and C, B and C, or A and B and C, where any such combination may contain one or more members of A, B, or C. A set should be interpreted as a set of elements, where the number of elements is one or more. Thus, for a set of X, X will include one or more elements. If the first device receives data from the second device or sends data to the second device, the data may be received / sent directly between the first device and the second device, or indirectly between the first device and the second device through a collection of devices. All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure that are known or will later be known to a person of ordinary skill in the art are expressly incorporated herein by reference and are covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims. Words such as "module", "mechanism", "element", "device", etc. cannot replace the word "component". Therefore, no claim element will be understood as a component plus function unless the element is explicitly stated using the phrase "component for..."

[0136] As used herein, the phrase "based on" should not be interpreted as referring to a closed set of information, one or more conditions, one or more factors, etc. In other words, the phrase "based on A" (where "A" can be information, conditions, factors, etc.) should be interpreted as "based at least on A" unless specifically stated differently.

[0137] The following aspects are merely illustrative and may be combined with other aspects or teachings described herein without limitation.

[0138] Aspect 1 is a method for wireless communication at a UE, the method comprising: receiving an indication of at least one unified TCI state for a first CORESET from a network node, the at least one unified TCI state being a shared unified TCI state for at least the first CORESET and PDSCH, the network node being associated with mTRP operation; and receiving a message from the network node via the first CORESET based on the at least one unified TCI state.

[0139] Aspect 2 is a method according to aspect 1, wherein the first CORESET is not a CORESET with CSS.

[0140] Aspect 3 is a method according to aspect 1, the method further comprising: receiving a first indication associated with sharing the at least one unified TCI state between the first CORESET and the PDSCH from the network node, wherein the first indication indicates the number of unified TCI states in the at least one unified TCI state based on a first CORESET type of the first CORESET.

[0141] Aspect 4 is a method according to aspect 3, wherein the first CORESET is a CORESET with a CSS or a CORESET with both a CSS and a USS, except CORESET#0, and the at least one unified TCI state includes a single unified TCI state.

[0142] Aspect 5 is a method according to aspect 3, wherein the first CORESET is a CORESET with a USS.

[0143] Aspect 6 is a method according to aspect 5, wherein the at least one unified TCI state comprises a plurality of unified TCI states.

[0144] Aspect 7 is a method according to aspect 3, wherein the first CORESET is CORESET#0, and the at least one unified TCI state includes a single unified TCI state.

[0145] Aspect 8 is a method according to Aspect 3, wherein the first CORESET is a CORESET with CSS or a CORESET with both CSS and USS, except CORESET#0, the at least one unified TCI state includes multiple unified TCI states, and the message is received via the first CORESET based on a single unified TCI state among the multiple unified TCI states.

[0146] Aspect 9 is a method according to any one of aspects 3 to 8, wherein the first indication is received via RRC signaling.

[0147] Aspect 10 is a method according to aspect 9, wherein the first indication is associated with a CORESET, a CORESET group, a CORESET type, a TCI state, or a TCI state group.

[0148] Aspect 11 is a method according to any one of aspects 3 to 8, wherein the first indication is received in a MAC-CE.

[0149] Aspect 12 is a method according to aspect 11, wherein the MAC-CE further includes a second indication for unified TCI state activation.

[0150] Aspect 13 is a method according to any one of aspects 3 to 8, wherein the first indication is received in a DCI message.

[0151] Aspect 14 is a method according to aspect 13, wherein the DCI message further includes a third indication for code point selection.

[0152] Aspect 15 is a method for performing wireless communications at a network node, the method comprising: sending an indication of at least one unified TCI state for a first CORESET to a UE, the at least one unified TCI state being a shared unified TCI state for at least the first CORESET and PDSCH, the network node being associated with mTRP operation; and sending a message to the UE via the first CORESET based on the at least one unified TCI state.

[0153] Aspect 16 is a method according to aspect 15, wherein the first CORESET is not a CORESET with a CSS.

[0154] Aspect 17 is a method according to aspect 15, the method further comprising: sending a first indication associated with sharing the at least one unified TCI state between the first CORESET and the PDSCH to the UE, wherein the first indication indicates the number of unified TCI states in the at least one unified TCI state based on a first CORESET type of the first CORESET.

[0155] Aspect 18 is a method according to aspect 17, wherein the first CORESET is a CORESET with a CSS or a CORESET with both a CSS and a USS, except CORESET#0, and the at least one unified TCI state includes a single unified TCI state.

[0156] Aspect 19 is a method according to aspect 17, wherein the first CORESET is a CORESET with a USS.

[0157] Aspect 20 is a method according to aspect 19, wherein the at least one unified TCI state comprises a plurality of unified TCI states.

[0158] Aspect 21 is a method according to aspect 17, wherein the first CORESET is CORESET #0, and the at least one unified TCI state includes a single unified TCI state.

[0159] Aspect 22 is a method according to Aspect 17, wherein the first CORESET is a CORESET with CSS or a CORESET with both CSS and USS, except CORESET#0, the at least one unified TCI state includes multiple unified TCI states, and the message is sent via the first CORESET based on a single unified TCI state among the multiple unified TCI states.

[0160] Aspect 23 is a method according to any one of aspects 17 to 22, wherein the first indication is sent via RRC signaling.

[0161] Aspect 24 is a method according to aspect 23, wherein the first indication is associated with a CORESET, a CORESET group, a CORESET type, a TCI state, or a TCI state group.

[0162] Aspect 25 is a method according to any one of aspects 17 to 22, wherein the first indication is sent in a MAC-CE.

[0163] Aspect 26 is a method according to aspect 25, wherein the MAC-CE further includes a second indication for unified TCI state activation.

[0164] Aspect 27 is a method according to any one of aspects 17 to 22, wherein the first indication is sent in a DCI message.

[0165] Aspect 28 is a method according to aspect 27, wherein the DCI message further includes a third indication for code point selection.

[0166] Aspect 29 is an apparatus for wireless communication, the apparatus comprising: at least one processor, the at least one processor being coupled to a memory, and the at least one processor being configured to implement a method as described in any one of Aspects 1 to 28 based at least in part on information stored in the memory.

[0167] Aspect 30 may be combined with Aspect 29 and further comprises: a transceiver coupled to the at least one processor.

[0168] Aspect 31 is an apparatus for wireless communication, the apparatus comprising means for implementing any one of aspects 1 to 28.

[0169] Aspect 32 is a non-transitory computer-readable storage medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement any one of aspects 1 to 28.

[0170] Various aspects have been described herein. These and other aspects are within the scope of the following claims.

Claims

1. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: Memory; and at least one processor coupled to the memory and based at least in part on the information stored in the memory, the at least one processor configured to: receiving, from a network node, an indication of at least one unified transmit configuration indicator (TCI) state for a first control resource set (CORESET), the at least one unified TCI state being a shared unified TCI state for at least the first CORESET and a physical downlink shared channel (PDSCH), the network node being associated with multiple transmit receive point (mTRP) operation; as well as A message is received from the network node via the first CORESET based on the at least one unified TCI state.

2. The apparatus of claim 1, wherein the first CORESET is not a CORESET with a common search space (CSS).

3. The apparatus of claim 1 , wherein the at least one processor is further configured to: A first indication associated with sharing the at least one unified TCI state between the first CORESET and the PDSCH is received from the network node, wherein the first indication indicates a number of unified TCI states in the at least one unified TCI state based on a first CORESET type of the first CORESET.

4. The apparatus of claim 3, wherein the first CORESET is a CORESET with a common search space (CSS) or a CORESET with both a CSS and a UE-specific search space (USS), except CORESET #0, and the at least one unified TCI state comprises a single unified TCI state.

5. The apparatus of claim 3, wherein the first CORESET is a CORESET with a UE-specific search space (USS).

6. The apparatus of claim 5, wherein the at least one unified TCI state comprises a plurality of unified TCI states.

7. The apparatus of claim 3, wherein the first CORESET is CORESET #0, and the at least one unified TCI state comprises a single unified TCI state.

8. The apparatus of claim 3, wherein the first CORESET is a CORESET having a common search space (CSS) or a CORESET having both a CSS and a UE-specific search space (USS), except CORESET#0, the at least one unified TCI state comprises a plurality of unified TCI states, and the message is received via the first CORESET based on a single unified TCI state among the plurality of unified TCI states.

9. The apparatus of claim 3, wherein the first indication is received via radio resource control (RRC) signaling.

10. The apparatus of claim 9, wherein the first indication is associated with a CORESET, a CORESET group, a CORESET type, a TCI state, or a TCI state group.

11. The apparatus of claim 3, wherein the first indication is received in a Medium Access Control - Control Element (MAC-CE).

12. The apparatus according to claim 11, wherein the MAC-CE further includes a second indication for unified TCI state activation.

13. The apparatus of claim 3, wherein the first indication is received in a downlink control information (DCI) message.

14. The apparatus of claim 13, further comprising a transceiver coupled to the at least one processor, wherein the DCI message further comprises a third indication for codepoint selection.

15. A method of wireless communication at a user equipment (UE), the method comprising: receiving, from a network node, an indication of at least one unified transmit configuration indicator (TCI) state for a first control resource set (CORESET), the at least one unified TCI state being a shared unified TCI state for at least the first CORESET and a physical downlink shared channel (PDSCH), the network node being associated with multiple transmit receive point (mTRP) operation; as well as A message is received from the network node via the first CORESET based on the at least one unified TCI state.

16. An apparatus for wireless communication at a network node, the apparatus comprising: Memory; and at least one processor coupled to the memory and based at least in part on the information stored in the memory, the at least one processor configured to: sending an indication of at least one unified transmit configuration indicator (TCI) state for a first control resource set (CORESET) to a user equipment (UE), the at least one unified TCI state being a shared unified TCI state for at least the first CORESET and a physical downlink shared channel (PDSCH), the network node being associated with multiple transmit reception point (mTRP) operation; as well as A message is sent to the UE via the first CORESET based on the at least one unified TCI state.

17. The apparatus of claim 16, wherein the first CORESET is not a CORESET with a common search space (CSS).

18. The apparatus of claim 16, wherein the at least one processor is further configured to: A first indication associated with sharing the at least one unified TCI state between the first CORESET and the PDSCH is sent to the UE, wherein the first indication indicates a number of unified TCI states in the at least one unified TCI state based on a first CORESET type of the first CORESET.

19. The apparatus of claim 18, wherein the first CORESET is a CORESET with a common search space (CSS) or a CORESET with both a CSS and a UE-specific search space (USS), except CORESET#0, and the at least one unified TCI state comprises a single unified TCI state.

20. The apparatus of claim 18, wherein the first CORESET is a CORESET with a UE-specific search space (USS).

21. The apparatus of claim 20, wherein the at least one unified TCI state comprises a plurality of unified TCI states.

22. The apparatus of claim 18, wherein the first CORESET is CORESET #0 and the at least one unified TCI state comprises a single unified TCI state.

23. The apparatus of claim 18, wherein the first CORESET is a CORESET having a common search space (CSS) or a CORESET having both a CSS and a UE-specific search space (USS), except CORESET#0, the at least one unified TCI state comprises a plurality of unified TCI states, and the message is sent via the first CORESET based on a single unified TCI state of the plurality of unified TCI states.

24. The apparatus of claim 18, wherein the first indication is sent via radio resource control (RRC) signaling.

25. The apparatus of claim 24, wherein the first indication is associated with a CORESET, a CORESET group, a CORESET type, a TCI state, or a TCI state group.

26. The apparatus of claim 18, wherein the first indication is sent in a Medium Access Control - Control Element (MAC-CE).

27. The apparatus of claim 26, wherein the MAC-CE further comprises a second indication for unified TCI state activation.

28. The apparatus of claim 18, wherein the first indication is sent in a downlink control information (DCI) message.

29. The apparatus of claim 28, further comprising a transceiver coupled to the at least one processor, wherein the DCI message further comprises a third indication for codepoint selection.

30. A method for wireless communication at a network node, the method comprising: sending an indication of at least one unified transmit configuration indicator (TCI) state for a first control resource set (CORESET) to a user equipment (UE), the at least one unified TCI state being a shared unified TCI state for at least the first CORESET and a physical downlink shared channel (PDSCH), the network node being associated with multiple transmit reception point (mTRP) operation; as well as A message is sent to the UE via the first CORESET based on the at least one unified TCI state.

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