Method and apparatus for indicating dynamic beam switching via downlink control information

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method and apparatus for indicating dynamic beam switching via downlink control information (DCI) in a wireless communication system.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communication systems, and more particularly, to an indication of dynamic beam switching via downlink control information (DCI) in a wireless communication system. Background Art

[0002] 5G mobile communication technology defines a wide frequency band, making high transmission rates and new services possible, and can be implemented not only in "below 6 GHz" frequency bands such as 3.5 GHz, but also in "above 6 GHz" frequency bands (including 28 GHz and 39 GHz) called millimeter waves. In addition, 6G mobile communication technology (called super 5G system) has been considered to be implemented in terahertz frequency bands (such as 95 GHz to 3 THz bands) in order to achieve a transmission rate fifty times faster than 5G mobile communication technology and ultra-low latency that is one-tenth of 5G mobile communication technology.

[0003] At the beginning of the development of 5G mobile communication technology, in order to support services and meet the performance requirements related to enhanced mobile broadband (eMBB), ultra-reliable and low-latency communications (URLLC) and massive machine type communications (mMTC), standardization has been carried out on the following technologies: beamforming and massive MIMO for mitigating radio wave path loss and increasing radio wave transmission distance in millimeter waves; support parameter sets (e.g., operating multiple subcarrier spacings) for efficient use of millimeter wave resources and dynamic operation of time slot formats; initial access technology for supporting multi-beam transmission and broadband; definition and operation of bandwidth parts (BWP); new channel coding methods (such as low-density parity-check (LDPC) codes for large amounts of data transmission and polarization codes for high-reliability transmission of control information); L2 preprocessing; and network slicing for providing dedicated networks dedicated to specific services.

[0004] Currently, in view of the services supported by 5G mobile communication technology, discussions are underway on improvements and performance enhancements of initial 5G mobile communication technology, and there is physical layer standardization on technologies such as: Vehicle-to-Everything (V2X) for assisting driving decisions of autonomous vehicles based on information about the location and status of the vehicle transmitted by the vehicle and for improving user convenience, New Radio Unlicensed (NR-U) designed to allow system operation to comply with various regulatory requirements in unlicensed bands, NR UE energy saving, Non-Terrestrial Network (NTN) as UE-satellite direct communication for providing coverage in areas where terrestrial network communications are unavailable, and positioning.

[0005] In addition, in the field of air interface architecture / protocol, such technologies as the following are being standardized: Industrial Internet of Things (IIoT), which is used to support new services through interworking and integration with other industries; Integrated Access and Backhaul (IAB), which is used to provide nodes for network service area expansion by supporting wireless backhaul links and access links in an integrated manner; Mobility enhancement including conditional handover and DAPS (dual active protocol stack) handover; and two-step random access (2-step RACH for NR) for simplifying the random access process. In the field of system architecture / service, such technologies as the following are also being standardized: 5G baseline architecture (e.g., service-based architecture or service-based interface), which is used to combine network function virtualization (NFV) and software-defined network (SDN) technologies; and mobile edge computing (MEC), which is used to receive services based on UE location.

[0006] As such 5G mobile communication systems are commercialized, the number of connected devices, which has been growing exponentially, will be connected to the communication network, and it is therefore expected that there will be a need to enhance the functionality and performance of the 5G mobile communication systems and the integrated operation of the connected devices. To this end, new research related to the following technologies is planned: Extended Reality (XR) for effectively supporting Augmented Reality (AR), Virtual Reality (VR), Mixed Reality (MR), etc.; Improving 5G performance and reducing complexity by utilizing Artificial Intelligence (AI) and Machine Learning (ML); AI service support; Metaverse service support; and UAV communication.

[0007] Furthermore, such developments in 5G mobile communication systems will serve not only as a basis for developing: new waveforms for providing coverage in the terahertz band for 6G mobile communication technology; multi-antenna transmission technologies (such as full-dimensional MIMO (FD-MIMO), array antennas, and large antennas); metamaterial-based lenses and antennas for improving the coverage of terahertz band signals; high-dimensional spatial multiplexing technologies using orbital angular momentum (OAM); and reconfigurable smart surfaces (RIS), but will also serve as a basis for developing: full-duplex technologies for increasing the frequency efficiency of 6G mobile communication technology and improving system networks; AI-based communication technologies for achieving system optimization by leveraging satellites and AI (artificial intelligence) from the design stage and internalizing end-to-end AI support functions; and next-generation distributed computing technologies for achieving services at a complexity level that exceeds the limits of UE operating capabilities by leveraging ultra-high-performance communication and computing resources.

[0008] With all the technical activities around the world for various candidate technologies from industry and academia, the momentum for 5th Generation (5G) or New Radio (NR) mobile communications has been increasing recently. Candidate enablers for 5G / NR mobile communications include: massive antenna technology, from traditional cellular bands to high frequencies to provide beamforming gain and support increased capacity; new waveforms (e.g., new radio access technologies (RATs)) for flexible adaptation to various services / applications with different requirements; new multiple access schemes for supporting large-scale connectivity, etc. Summary of the invention

[0009] Technical issues

[0010] The present disclosure proposes a method and apparatus related to indication of dynamic beam switching via DCI in a wireless communication system.

[0011] The present disclosure provides a method and apparatus for dynamic beam switching via a DCI usage indicator in a wireless communication system.

[0012] The technical subject matter pursued in the present disclosure may not be limited to the above-mentioned technical subject matter, and other technical subject matter not mentioned may be clearly understood by those skilled in the art to which the present disclosure relates through the following description.

[0013] Technical Solution

[0014] In one embodiment, a user equipment (UE) is provided. The UE includes a transceiver configured to receive radio resource control (RRC) signaling, the signaling including parameters indicating a first group of transmission configuration indication (TCI) states and a second group of TCI states; receiving a first indicator and a TCI state update in a first DCI; and receiving a second indicator in a second DCI. The UE also includes a processor operably connected to the transceiver. The processor is configured to identify a first TCI state from a first group of TCI states and a second TCI state from a second group of TCI states; determine whether the TCI state update belongs to the first group of TCI states or the second group of TCI states based on the first indicator; and identify whether the first TCI state or the second TCI state is used to receive a physical downlink shared channel (PDSCH) or transmit a physical uplink shared channel (PUSCH) based on the second indicator.

[0015] In another embodiment, a method performed by a UE. The method includes receiving RRC signaling including parameters indicating a first group of TCI states and a second group of TCI states; receiving a first indicator and a TCI state update in a first DCI; and receiving a second indicator in a second DCI. The method also includes identifying a first TCI state from the first group of TCI states and identifying a second TCI state from the second group of TCI states; determining whether the TCI state update belongs to the first group of TCI states or the second group of TCI states based on the first indicator; and identifying whether the first TCI state or the second TCI state is used for receiving a PDSCH or transmitting a PUSCH based on the second indicator.

[0016] In yet another embodiment, a base station (BS) is provided. The BS includes a transceiver configured to transmit RRC signaling including parameters indicating a first set of TCI states and a second set of TCI states; transmit a first indicator and a TCI state update in a first DCI; and transmit a second indicator in a second DCI. The first indicator indicates whether the TCI state update belongs to the first set of TCI states or the second set of TCI states. The second indicator indicates whether the first TCI state from the first set of TCI states or the second TCI state from the second set of TCI states is used for PDSCH or for PUSCH.

[0017] Other technical features may be easily apparent to those skilled in the art from the following drawings, descriptions and claims.

[0018] Before the following detailed description, it may be advantageous to set forth the definitions of certain words and phrases used throughout this patent document. The term "connection" and its derivatives refer to any direct or indirect communication between two or more elements, whether or not these elements are in physical contact with each other. The terms "transmit", "receive" and "communication" and their derivatives cover direct and indirect communication. The terms "include" and "comprise" and their derivatives mean including but not limited to. The term "or" is inclusive, meaning and / or. The phrase "associated with..." and its derivatives mean including, included in, interconnected with, included in, connected to, connected to, connected to, connected to, connected to, can communicate with, collaborate with, interlace, juxtapose, be adjacent to, be coupled to, coupled to, have, have characteristics, have a relationship with, or have a relationship with, etc. The term "controller" refers to any device, system, or part thereof that controls at least one operation. Such a controller may be implemented in hardware or a combination of hardware and software and / or firmware. The functions associated with any particular controller may be centralized or distributed, whether local or remote. The phrase "at least one of" when used with a list of items means that different combinations of one or more of the listed items may be used, and only one item in the list may be required. For example, "at least one of A, B, and C" includes any of the following combinations: A; B; C; A and B; A and C; B and C; and A and B and C.

[0019] In addition, the various functions described below can be implemented or supported by one or more computer programs, each of which is formed by a computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, processes, functions, objects, classes, instances, related data or a part thereof suitable for implementation with a suitable computer-readable program code. The phrase "computer-readable program code" includes any type of computer code, including source code, object code and executable code. The phrase "computer-readable medium" includes any type of medium that can be accessed by a computer, such as a read-only memory (ROM), a random access memory (RAM), a hard drive, a compact disc (CD), a digital video disc (DVD) or any other type of memory. "Non-transitory" computer-readable media excludes wired, wireless, optical or other communication links that transmit instantaneous electrical signals or other signals. Non-transitory computer-readable media include media that can store data permanently, and media that can store data and rewrite data later, such as rewritable optical discs or erasable memory devices. Definitions of other specific words and phrases are provided throughout this patent document. Those of ordinary skill in the art should understand that in many, if not most instances, such definitions apply to prior, as well as future uses of such defined words and phrases.

[0020] Advantageous Effects of the Invention

[0021] According to an embodiment of the present disclosure, a method and apparatus related to indication of dynamic beam switching via DCI in a wireless communication system are proposed.

[0022] Advantageous effects obtainable from the present disclosure may not be limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those skilled in the art to which the present disclosure pertains through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] For a more complete understanding of the present disclosure and its advantages, reference is now made to the following description taken in conjunction with the accompanying drawings, in which like reference numerals represent like parts:

[0024] Figure 1 An example of a wireless network according to an embodiment of the present disclosure is shown;

[0025] Figure 2 An example of a gNB according to an embodiment of the present disclosure is shown;

[0026] Figure 3 An example of a UE according to an embodiment of the present disclosure is shown;

[0027] Figure 4 and Figure 5 Examples of wireless transmit and receive paths according to the present disclosure are shown;

[0028] FIG6A illustrates an example of a wireless system beam according to an embodiment of the present disclosure;

[0029] FIG6B illustrates an example of multi-beam operation according to an embodiment of the present disclosure;

[0030] Figure 7 An example of an antenna structure according to an embodiment of the present disclosure is shown; and

[0031] Figure 8 An example of a multiple transmission and reception point system according to an embodiment of the present disclosure is shown;

[0032] FIG. 9A shows an example of indicating first and second TCI state code points according to an embodiment of the present disclosure;

[0033] FIG9B shows another example of indicating first and second TCI state code points according to an embodiment of the present disclosure;

[0034] Fig.10 A flowchart of a method for using an SRS resource set indicator to indicate an association between one or more indicated TCI states and each of one or more channels according to an embodiment of the present disclosure is shown;

[0035] Fig.11 Another example of indicating first and second TCI state code points according to an embodiment of the present disclosure is shown; and

[0036] Fig.12 A flowchart of another method of using an SRS resource set indicator to indicate an association between one or more indicated TCI states and each of one or more channels according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0037] The following discussion Figures 1 to 12 The various embodiments used to describe the principles of the present disclosure in this patent document are only used as illustrations and should not be interpreted in any way as limiting the scope of the present disclosure. Those skilled in the art will understand that the principles of the present disclosure can be implemented in any appropriately arranged system or device.

[0038] The following documents are hereby incorporated by reference into the present disclosure as if fully set forth herein: 3GPP TS 38.211 v16.1.0, “NR; Physical Channels and Modulation”; 3GPP TS 38.212 v16.1.0, “NR; Multiplexing and Channel Coding”; 3GPP TS 38.213 v16.1.0, “NR; Physical Layer Procedures for Control”; 3GPP TS 38.214 v16.1.0, “NR; Physical Layer Procedures for Data”; 3GPP TS 38.321 v16.1.0, “NR; Medium Access Control (MAC) Protocol Description”; and 3GPP TS 38.331 v16.1.0, “NR; Radio Resource Control (RRC) Protocol Description”.

[0039] In order to meet the increased demand for wireless data traffic since the deployment of 4G communication systems and to realize various vertical applications, 5G / NR communication systems have been deployed and are currently being deployed. 5G / NR communication systems are considered to be implemented in higher frequency (millimeter wave) bands (e.g., 28 GHz or 60 GHz bands) to implement higher data rates, or in lower frequency bands (such as 6 GHz) to implement robust coverage and mobility support. In order to reduce the propagation loss of radio waves and increase the transmission distance, beamforming, massive multiple-input multiple-output (MIMO), omnidirectional MIMO (FD-MIMO), array antennas, analog beamforming, and large antenna technology are discussed in 5G / NR communication systems.

[0040] In addition, in 5G / NR communication systems, the development of system network improvements is being carried out based on advanced small cells, cloud radio access networks (RAN), ultra-densified networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communications, coordinated multi-point (CoMP), receiving-end interference cancellation, etc.

[0041] The discussion of 5G systems and frequency bands associated therewith is for reference, as certain embodiments of the present disclosure may be implemented in 5G systems. However, the present disclosure is not limited to 5G systems or frequency bands associated therewith, and embodiments of the present disclosure may be used in conjunction with any frequency band. For example, aspects of the present disclosure may also be applied to 5G communication systems, 6G, or even higher deployments that may use terahertz (THz) bands.

[0042] the following Figures 1 to 3 Various embodiments are described that are implemented in a wireless communication system and utilizing Orthogonal Frequency Division Multiplexing (OFDM) or Orthogonal Frequency Division Multiple Access (OFDMA) communication techniques. Figures 1 to 3The description is not intended to imply physical or architectural limitations to which different embodiments may be implemented. Different embodiments of the disclosure may be implemented in any suitably arranged communications system.

[0043] Figure 1 An example wireless network according to an embodiment of the present disclosure is presented. Figure 1 The embodiment of the wireless network shown is for illustration only. Other embodiments of the wireless network 100 may be used without departing from the scope of the present disclosure.

[0044] like Figure 1 As shown, the wireless network includes gNB 101 (e.g., base station BS), gNB 102, and gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one network 130, such as the Internet, a proprietary Internet Protocol (IP) network, or other data network.

[0045] gNB 102 provides wireless broadband access to network 130 for a first plurality of user equipment (UE) located within coverage area 120 of gNB 102. The first plurality of UEs include: UE 111, which may be located in a small business; UE 112, which may be located in an enterprise; UE 113, which may be a WiFi hotspot; UE 114, which may be located in a first residence; UE 115, which may be located in a second residence; and UE 116, which may be a mobile device such as a cellular phone, a wireless laptop, a wireless PDA, etc. gNB 103 provides wireless broadband access to network 130 for a second plurality of UEs within coverage area 125 of gNB 103. The second plurality of UEs includes UE 115 and UE 116. In some embodiments, one or more of gNBs 101 to 103 may communicate with each other and with UEs 111 to 116 using 5G / NR, Long Term Evolution (LTE), Long Term Evolution Advanced (LTE-A), WiMAX, WiFi, or other wireless communication technologies.

[0046] Depending on the network type, the term "base station" or "BS" may refer to any component (or set of components) configured to provide wireless access to a network, such as a transmission point (TP), a transmission-receiving point (TRP), an enhanced base station (eNodeB or eNB), a 5G / NR base station (gNB), a large cell, a femtocell, a WiFi access point (AP), or other wirelessly capable devices. The base station may provide wireless access according to one or more wireless communication protocols (e.g., 5G / NR, 3rd Generation Partnership Project (3GPP) NR, Long Term Evolution (LTE), Advanced LTE (LTE-A), High Speed ​​Packet Access (HSPA), Wi-Fi 802.11a / b / g / n / ac, etc.). For convenience, the terms "BS" and "TRP" may be used interchangeably in this patent document to refer to network infrastructure components that provide wireless access to remote terminals. In addition, depending on the network type, the term "user equipment" or "UE" may refer to any component, such as a "mobile station", "subscriber station", "remote terminal", "wireless terminal", "receiving point", or "user device". For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to a remote wireless device that wirelessly accesses a BS, whether the UE is a mobile device (such as a mobile phone or smartphone) or is generally considered a fixed device (such as a desktop computer or vending machine).

[0047] Dashed lines illustrate the approximate extents of coverage areas 120 and 125, which are shown as generally circular for purposes of illustration and explanation only. It should be clearly understood that coverage areas associated with a gNB, such as coverage areas 120 and 125, may have other shapes, including irregular shapes, depending on the configuration of the gNB and variations in the radio environment associated with natural and man-made obstacles.

[0048] As described in more detail below, one or more of UEs 111-116 include circuitry, programming, or a combination thereof for indication of dynamic beam switching via DCI in a wireless communication system. In certain embodiments, and one or more of gNBs 101-103 include circuitry, programming, or a combination thereof for indication of dynamic beam switching via DCI in a wireless communication system.

[0049] Although Figure 1 An example of a wireless network is shown, but Figure 1Various changes may be made. For example, the wireless network may include any number of gNBs and any number of UEs in any suitable arrangement. In addition, gNB 101 may communicate directly with any number of UEs and provide those UEs with wireless broadband access to network 130. Similarly, gNBs 102 to 103 may each communicate directly with network 130 and provide UEs with direct wireless broadband access to network 130. Furthermore, gNBs 101, 102, and / or 103 may provide access to other or additional external networks, such as an external telephone network or other type of data network.

[0050] Figure 2 An exemplary gNB 102 according to an embodiment of the present disclosure is shown. Figure 2 The embodiment of the gNB 102 shown is for illustration purposes only, and Figure 1 gNBs 101 and 103 may have the same or similar configurations. However, gNBs have a wide variety of configurations, and Figure 2 The scope of this disclosure is not limited to any particular implementation of the gNB.

[0051] like Figure 2 As shown, the gNB 102 includes multiple antennas 205a to 205n, multiple transceivers 210a to 210n, a controller / processor 225, a memory 230, and a backhaul or network interface 235.

[0052] The transceivers 210a to 210n receive incoming RF signals from the antennas 205a to 205n, such as signals transmitted by a UE in the network 100. The transceivers 210a to 210n downconvert the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are processed by receive (RX) processing circuitry in the transceivers 210a to 210n and / or the controller / processor 225, which generates processed baseband signals by filtering, decoding and / or digitizing the baseband or IF signals. The controller / processor 225 may further process the baseband signals.

[0053] Transmit (TX) processing circuitry in the transceivers 210a-210n and / or the controller / processor 225 receives analog or digital data (such as voice data, network data, email, or interactive video game data) from the controller / processor 225. The TX processing circuitry encodes, multiplexes, and / or digitizes the outgoing baseband data to generate processed baseband or IF signals. The transceivers 210a-210n up-convert the baseband or IF signals into RF signals that are transmitted via the antennas 205a-205n.

[0054] The controller / processor 225 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 225 may control the reception of UL channel signals and the transmission of DL channel signals by the RF transceivers 210a to 210n in accordance with well-known principles. The controller / processor 225 may also support additional functionality, such as more advanced wireless communication functionality. For example, the controller / processor 225 may support beamforming or directional routing operations, in which outgoing / incoming signals from / to multiple antennas 205a to 205n are weighted differently to effectively direct the outgoing signals in a desired direction. Any of a variety of other functions may be supported in the gNB 102 by the controller / processor 225.

[0055] The controller / processor 225 is also capable of executing programs and other processes resident in the memory 230, such as processes for indication of dynamic beam switching via DCI in a wireless communication system. The controller / processor 225 can move data into or out of the memory 230 as required by the executing process.

[0056] The controller / processor 225 is also connected to a backhaul or network interface 235. The backhaul or network interface 235 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or via a network. The interface 235 can support communication via any appropriate wired or wireless connection. For example, when the gNB 102 is implemented as part of a cellular communication system (such as a cellular communication system supporting 5G / NR, LTE, or LTE-A), the interface 235 can allow the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the interface 235 can allow the gNB 102 to communicate with a larger network (such as the Internet) via a wired or wireless local area network or via a wired or wireless connection. The interface 235 includes any suitable structure that supports communication via a wired or wireless connection (such as Ethernet or a transceiver).

[0057] Memory 230 is coupled to controller / processor 225. A portion of memory 230 may include RAM, and another portion of memory 230 may include flash memory or other ROM.

[0058] Although Figure 2 An example of a gNB 102 is shown, but Figure 2 For example, gNB 102 may include Figure 2 Any quantity of each component shown. In addition, Figure 2 The various components in may be combined, further subdivided, or omitted, and additional components may be added according to specific needs.

[0059] Figure 3 An exemplary UE 116 is shown in accordance with an embodiment of the present disclosure. Figure 3 The embodiment of UE 116 shown in FIG. 1 is for illustration only, and Figure 1 UEs 111 to 115 may have the same or similar configurations. However, UEs have a wide variety of configurations, and Figure 3 The scope of the present disclosure is not limited to any particular implementation of the UE.

[0060] like Figure 3 As shown, UE 116 includes antenna 305, transceiver 310, and microphone 320. UE 116 also includes speaker 330, processor 340, input / output (I / O) interface (IF) 345, input 350, display 355, and memory 360. Memory 360 includes operating system (OS) 361 and one or more applications 362.

[0061] Transceiver 310 receives incoming RF signals transmitted by a gNB of network 100 from antenna 305. Transceiver 310 downconverts the incoming RF signals to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is processed by RX processing circuitry in transceiver 310 and / or processor 340, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. The RX processing circuitry sends the processed baseband signal to speaker 330 (such as for voice data) or is processed by processor 340 (such as for web browsing data).

[0062] The TX processing circuitry in the transceiver 310 and / or processor 340 receives analog or digital voice data from the microphone 320 or other outgoing baseband data (such as web data, email, or interactive video game data) from the processor 340. The TX processing circuitry encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The transceiver 310 up-converts the baseband or IF signal to an RF signal that is transmitted via the antenna 305.

[0063] The processor 340 may include one or more processors or other processing devices, and executes the OS 361 stored in the memory 360 to control the overall operation of the UE 116. For example, the processor 340 may control the transceiver 310 to receive DL channel signals and transmit UL channel signals according to well-known principles. In some embodiments, the processor 340 includes at least one microprocessor or microcontroller.

[0064] The processor 340 is capable of executing other processes and programs resident in the memory 360, such as processes for indication of dynamic beam switching via DCI in a wireless communication system.

[0065] Processor 340 can move data into or out of memory 360 as needed by the executing process. In some embodiments, processor 340 is configured to execute application 362 based on OS 361 or in response to signals received from a gNB or operator. Processor 340 is also coupled to I / O interface 345, which provides UE 116 with the ability to connect to other devices such as laptops and handheld computers. I / O interface 345 is the communication path between these accessories and processor 340.

[0066] Processor 340 is also coupled to input 350 and display 355m, which may include, for example, a touch screen, a keypad, etc. An operator of UE 116 may use input 350 to enter data into UE 116. Display 355 may be a liquid crystal display, a light emitting diode display, or other display capable of presenting text and / or at least limited graphics (such as from a website).

[0067] Memory 360 is coupled to processor 340. A portion of memory 360 may include random access memory (RAM), and another portion of memory 360 may include flash memory or other read-only memory (ROM).

[0068] Although Figure 3 An example of BS116 is shown, but Figure 3 Make various changes. For example, Figure 3 The various components in may be combined, further subdivided, or omitted, and additional components may be added as required. As a specific example, processor 340 may be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). In another example, transceiver 310 may include any number of transceivers and signal processing chains and may be connected to any number of antennas. Additionally, although Figure 3 The UE 116 is shown configured as a mobile phone or smart phone, but the UE may be configured to operate as other types of mobile or stationary devices.

[0069] Figure 4 and Figure 5Exemplary wireless transmit and receive paths according to the present disclosure are shown. In the following description, the transmit path 400 may be described as being implemented in a gNB (such as, gNB 102), and the receive path 500 may be described as being implemented in a UE (such as, UE 116). In some embodiments, the receive path 500 is configured to receive an indication of dynamic beam switching via a DCI in a wireless communication system. However, it is understood that the receive path 500 may be implemented in a gNB and the transmit path 400 may be implemented in a UE. In some embodiments, the receive path 500 is configured to support codebook design and structure for a system with a 2D antenna array, as described in embodiments of the present disclosure.

[0070] like Figure 4 The transmit path 400 shown in FIG. 4 includes a channel coding and modulation block 405, a serial to parallel (S to P) block 410, a size N inverse fast Fourier transform (IFFT) block 415, a parallel to serial (P to S) block 420, an add cyclic prefix block 425, and an up-converter (UC) 430. Figure 5 The receive path 500 shown includes a down converter (DC) 555, a remove cyclic prefix block 560, a serial to parallel (S to P) block 565, a size N fast Fourier transform (FFT) block 570, a parallel to serial (P to S) block 575, and a channel decoding and demodulation block 580.

[0071] like Figure 4 As shown in , the channel coding and modulation block 405 receives a set of information bits, applies coding (such as, low-density parity check (LDPC) coding) and modulates the input bits (such as, with orthogonal phase shift keying (QPSK) or orthogonal amplitude modulation (QAM)) to generate a sequence of frequency-domain modulation symbols.

[0072] Serial to parallel block 410 converts (such as demultiplexes) the serially modulated symbols into parallel data to generate N parallel symbol streams, where N is the IFFT / FFT size used in gNB 102 and UE 116. Size N IFFT block 415 performs an IFFT operation on the N parallel symbol streams to generate a time domain output signal. Parallel to serial block 420 converts (such as multiplexes) the parallel time domain output symbols from size N IFFT block 415 to generate a serial time domain signal. Add cyclic prefix block 425 inserts a cyclic prefix into the time domain signal. Up converter 430 modulates (such as upconverts) the output of add cyclic prefix block 425 to RF frequency for transmission via a wireless channel. The signal may also be filtered at baseband before conversion to RF frequency.

[0073] The RF signal transmitted from gNB 102 reaches UE 116 after passing through the wireless channel, and operations opposite to those at gNB 102 are performed at UE 116.

[0074] like Figure 5 As shown, downconverter 555 downconverts the received signal to baseband frequency, and remove cyclic prefix block 560 removes the cyclic prefix to generate a serial time domain baseband signal. Serial to parallel block 565 converts the time domain baseband signal into parallel time domain signals. FFT block 570 of size N performs an FFT algorithm to generate N parallel frequency domain signals. Parallel to serial block 575 converts the parallel frequency domain signals into a sequence of modulated data symbols. Channel decoding and demodulation block 580 demodulates and decodes the modulated symbols to recover the original input data stream.

[0075] Each of gNBs 101 to 103 may implement a similar method as that for transmitting in the downlink to UEs 111 to 116. Figure 4 The transmission path 400 shown may be implemented similarly to that received in the uplink from UEs 111 to 116. Figure 5 Receive path 500 is shown. Similarly, each of UEs 111-116 may implement transmit path 400 for transmitting in the uplink to gNBs 101-103 and may implement receive path 500 for receiving in the downlink from gNBs 101-103.

[0076] Can be implemented using hardware only or a combination of hardware and software / firmware Figure 4 and Figure 5 As a specific example, Figure 4 and Figure 5 At least some of the components in can be implemented with software, while other components can be implemented by configurable hardware or a mixture of software and configurable hardware. For example, FFT block 570 and IFFT block 415 can be implemented as a configurable software algorithm, wherein the value of size N can be modified according to the implementation.

[0077] In addition, although described as using FFT and IFFT, this is only by way of illustration and should not be construed as limiting the scope of the present disclosure. Other types of transforms may be used, such as discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT) functions. It will be appreciated that the value of the variable N may be any integer (such as 1, 2, 3, 4, etc.) for the DFT and IDFT functions, while the value of the variable N may be any integer (such as 1, 2, 4, 8, 16, etc.) as a power of two for the FFT and IFFT functions.

[0078] although Figure 4 and Figure 5 Examples of wireless transmit and receive paths are shown, but Figure 4 and Figure 5 Make various changes. For example, Figure 4 and Figure 5 The various components in the can be combined, further subdivided or omitted, and additional components can be added according to specific needs. Figure 4 and Figure 5 It is intended to illustrate examples of the types of transmit and receive paths that may be used in a wireless network. Any other suitable architecture may be used to support wireless communications in a wireless network.

[0079] The unit for DL ​​signaling or for UL signaling on a cell is called a slot and may include one or more symbols. The bandwidth (BW) unit is called a resource block (RB). One RB includes multiple subcarriers (SC). For example, a slot may have a duration of one millisecond, and an RB may have a bandwidth of 180 KHz and include 12 SCs, where the inter-SC spacing is 15 KHz. A slot may be a full DL slot or a full UL slot, or a mixed slot similar to a special subframe in a time division duplex (TDD) system.

[0080] DL signals include data signals that convey information content, control signals that convey DL control information (DCI), and reference signals (RS) also known as pilot signals. The gNB transmits data information or DCI through the corresponding physical DL shared channel (PDSCH) or physical DL control channel (PDCCH). PDSCH or PDCCH can be transmitted through a variable number of time slot symbols including one time slot symbol. In the case where the UE receives the PDCCH, the spatial setting for PDCCH reception can be indicated to the UE based on the configuration of the value of the transmission configuration indication state (TCI state) of the CORESET. The spatial setting for PDSCH reception can be indicated to the UE based on the configuration of the higher layer or based on the indication of the value of the TCI state of the DCI format that schedules PDSCH reception. The gNB can configure the UE to receive signals on the cell within the DL bandwidth part (BWP) of the cell DL BW.

[0081] The gNB transmits one or more of multiple types of RS, including channel state information RS (CSI-RS) and demodulation RS (DMRS). CSI-RS is primarily intended for UEs to perform measurements and provide channel state information (CSI) to the gNB. For channel measurements, non-zero power CSI-RS (NZP CSI-RS) resources are used. For interference measurement reports (IMRs), CSI interference measurement (CSI-IM) resources associated with non-zero power CSI-RS (ZP CSI-RS) configurations are used. The CSI process consists of NZP CSI-RS and CSI-IM resources. The UE can determine the CSI-RS transmission parameters through DL control signaling or high-level signaling (such as RRC signaling from the gNB). The transmission instance of CSI-RS can be indicated by DL control signaling or configured by high-level signaling. DMRS is transmitted only in the BW of the corresponding PDCCH or PDSCH, and the UE can use DMRS to demodulate data or control information.

[0082] The UL signal also includes a data signal that conveys information content, a control signal that conveys a UL control signal (UCI), a DMRS associated with data or UCI demodulation, a sounding RS (SRS) that enables the gNB to perform UL channel measurement, and a random access (RA) preamble that enables the UE to perform random access. The UE transmits data information or UCI through the corresponding physical UL shared channel (PUSCH) or physical UL control channel (PUCCH). The PUSCH or PUCCH may be transmitted by a variable number of slot symbols including one slot symbol. The gNB may configure the UE to transmit a signal on a cell within the UL BWP of the cell UL BW.

[0083] UCI includes Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) information indicating correct or incorrect detection of a data transport block (TB) in the PDSCH, a Scheduling Request (SR) indicating whether the UE has data in the UE's buffer, and a CSI report that enables the gNB to select appropriate parameters for PDSCH or PDCCH transmissions to the UE. The HARQ-ACK information can be configured to have a smaller granularity than each TB and can be each data code block (CB) or each data CB group, where a TB includes multiple data CBs.

[0084] The CSI report from the UE may include a channel quality indicator (CQI) that informs the gNB of the maximum modulation and coding scheme (MCS) for the UE to detect a data TB with a predetermined block error rate (BLER) (such as 10% BLER), a precoding matrix indicator (PMI) that informs the gNB how to combine signals from multiple transmitter antennas according to the multiple input multiple output (MIMO) transmission principle, and a rank indicator (RI) that indicates the transmission rank of the PDSCH. The UL RS includes DMRS and SRS. DMRS is transmitted only in the BW of the corresponding PUSCH or PUCCH transmission. The gNB can use DMRS to demodulate the information in the corresponding PUSCH or PUCCH. SRS is transmitted by the UE to provide UL CSI to the gNB, and for TDD systems, SRS transmission can also provide PMI for DL ​​transmission. In addition, in order to establish synchronization or initial high-layer connection with the gNB, the UE can transmit a physical random access channel.

[0085] In the present disclosure, a beam is determined by either: (1) TCI state, which establishes a quasi co-location (QCL) relationship between a source reference signal (e.g., synchronization signal / physical broadcast channel (PBCH) block (SSB) and / or CSI-RS) and a target reference signal; or (2) spatial relationship information, which establishes an association with a source reference signal (such as SSB or CSI-RS or SRS). In either case, the ID of the source reference signal identifies the beam.

[0086] The TCI state and / or the spatial relation reference RS may determine a spatial Rx filter for receiving a downlink channel at the UE or a spatial Tx filter for transmitting an uplink channel from the UE.

[0087] FIG6A illustrates an exemplary wireless system beam 600 according to an embodiment of the present disclosure. The embodiment of the wireless system beam 600 shown in FIG6A is for illustration only.

[0088] As shown in FIG6A , in a wireless system, for a device 604, a beam 601 can be characterized by a beam direction 602 and a beam width 603. For example, a device 604 having a transmitter transmits radio frequency (RF) energy in the beam direction and within the beam width. A device 604 having a receiver receives RF energy toward the device in the beam direction and within the beam width. As shown in FIG6A , a device 605 at point A can receive from and transmit to the device 604 because point A is within the beam width of a beam from the device 604 traveling along the beam direction.

[0089] 6A , device 606 at point B cannot receive from and transmit to device 604 because B is outside the beamwidth of the beam traveling along the beam direction from device 604. Although FIG6A shows the beam in 2 dimensions (2D) for illustrative purposes, it will be apparent to those skilled in the art that the beam can be in 3 dimensions (3D) where the beam direction and beamwidth are defined in space.

[0090] FIG6B illustrates an exemplary multi-beam operation 650 according to an embodiment of the present disclosure. The embodiment of multi-beam operation 650 shown in FIG6B is for illustration only.

[0091] In wireless systems, a device may transmit and / or receive on multiple beams. This is referred to as "multi-beam operation" and is illustrated in FIG6B. Although FIG6B is in 2D for illustrative purposes, it will be apparent to one skilled in the art that the beams may be 3D, where beams may be transmitted to or received from any direction in space.

[0092] Release 14 LTE and Release 15 NR support up to 32 CSI-RS antenna ports, which enables the eNB to be equipped with a large number of antenna elements (such as 64 or 128). In this case, multiple antenna elements are mapped to one CSI-RS port. For mmWave bands, although the number of antenna elements can be larger for a given form factor, the number of CSI-RS ports (which may correspond to the number of digital precoding ports) is often limited due to hardware limitations (such as the feasibility of installing a large number of ADCs / DACs at mmWave frequencies, e.g. Figure 7 shown.

[0093] Figure 7 An exemplary antenna structure 700 is shown in accordance with an embodiment of the present disclosure. Figure 7 The illustrated embodiment of antenna structure 700 is for illustration only.

[0094] In this case, one CSI-RS port is mapped to a large number of antenna elements that can be controlled by a set of analog phase shifters 701. One CSI-RS port can then correspond to a subarray that produces a narrow analog beam through analog beamforming 705. This analog beam can be configured to sweep a wider angle range (720) by changing the phase shifter group across symbols or subframes. The number of subarrays (equal to the number of RF chains) is the same as the number of CSI-RS ports NCSI-PORT. The digital beamforming unit 710 performs linear combinations across NCSI-PORT analog beams to further increase the precoding gain. Although the analog beam is broadband (and therefore not frequency selective), the digital precoding can be changed across frequency subbands or resource blocks. The receiver operation can be similarly conceived.

[0095] Since the aforementioned system utilizes multiple simulated beams for transmission and reception (where one or a small number of simulated beams are selected from a large number of simulated beams, for example, after a training duration, so as to be performed from time to time), the term "multi-beam operation" is used to refer to the entire system aspect. For the purpose of explanation, this includes indicating the assigned DL or UL TX beam (also referred to as "beam indication"), measuring at least one reference signal for calculating and performing beam reporting (also referred to as "beam measurement" and "beam reporting", respectively), and performing DL reception or UL transmission via selecting the corresponding RX beam.

[0096] The foregoing system is also applicable to higher frequency bands, such as >52.6 GHz. In this case, the system can employ only analog beams. Due to the O2 absorption loss near the 60 GHz frequency (about 10 dB additional loss at 100 m distance), a larger number and sharper analog beams (and therefore a larger number of radiators in the array) may be required to compensate for the additional path loss.

[0097] Figure 8 An example of a multiple transmit and receive point system 800 according to an embodiment of the present disclosure is shown. Figure 8 The illustrated embodiment of the multiple transmit and receive point system 800 is for illustration only.

[0098] exist Figure 8 In the multiple transmit and receive point (TRP) system depicted in , a UE may use a single receive (RX) panel or multiple RX panels to simultaneously receive various channels / RS, such as PDCCH and / or PDSCH, from multiple physically non-co-located TRPs. In the present disclosure, an RX panel may correspond to a set of RX antenna elements / ports at a UE, a set of measurement RS resources (such as SRS resources), a spatial domain RX filter, etc. In addition, a TRP in a multiple TRP system may represent a set of measurement antenna ports, measurement RS resources, and / or a control resource set (CORESET).

[0099] For example, a TRP may be associated with one or more of the following: (1) multiple CSI-RS resources; (2) multiple CRIs (CSI-RS resource indexes / indicators); (3) measurement RS resource sets, e.g., CSI-RS resource sets and their indicators; (4) multiple CORESETs associated with CORESETPoolIndex; and (5) multiple CORESETs associated with a TRP-specific index / indicator / identifier.

[0100] A cell / TRP in an inter-cell system (e.g., an inter-cell multi-TRP system) may be a non-serving cell / TRP. In the present disclosure, a non-serving cell or a non-serving cell TRP may have / broadcast a physical cell ID (PCI) and / or other high-level signaling index value that is different from a serving cell or a serving cell TRP (i.e., a serving cell PCI). In one example, a serving cell or a serving cell TRP may be associated with a serving cell ID (SCI) and / or a serving cell PCI. That is, in an inter-cell system, different cells / TRPs may broadcast different PCIs, and / or one or more cells / TRPs (referred to / defined as non-serving cells / TRPs in the present disclosure) may broadcast a PCI that is different from a serving cell / TRP (i.e., a serving cell PCI), and / or one or more cells / TRPs are not associated with a valid SCI (e.g., provided by a high-level parameter ServCellIndex). In the present disclosure, a non-serving cell PCI may also be referred to as an additional PCI, another PCI, or a different PCI (relative to the serving cell PCI).

[0101] In Release 17, a unified Transmission Configuration Indication (TCI) framework is specified for single TRP operation, where a common beam can be indicated for all UE-specific control and / or data channels. In order to extend the Release 17 unified TCI framework to multi-TRP operation, various design aspects need to be specified, such as means for configuring one or more TCI fields or TCI status code points in a downlink control information (DCI) format (e.g., DCI format 1_1 or 1_2 with or without DL allocation) to indicate beams for multiple TRPs.

[0102] In addition, since multiple multi-TRP operation modes such as PDCCH / PDSCH / PUCCH / PUSCH repetition are supported / specified in version 16 / 17, it is necessary to specify a method for dynamically switching between different multi-TRP operation modes under the unified TCI framework of version 17, or a method for dynamically switching between one or more multi-TRP operation modes and a single TRP operation mode.

[0103] The present disclosure considers various design aspects related to DCI-based beam indication for multi-TRP operation. In particular, detailed configuration information of TCI states, TCI fields or TCI state code points in DCI formats 1_1 or 1_2 with or without DL allocation, and their association with different TRPs in a multi-TRP system is specified / provided in the present disclosure. The present disclosure further specifies various methods for dynamically switching between different multi-TRP operation modes or between one or more multi-TRP operation modes and a single TRP operation mode under a unified TCI framework.

[0104] Specifically, for example, the UE may receive an indication / indicator in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) indicating which TCI state indicated in a downlink DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation) is to be used / applied for downlink reception or uplink transmission; for another example, one or more existing fields in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) may be used or reused to indicate which TCI state indicated in a downlink DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation) is to be used / applied for downlink reception or uplink transmission.

[0105] As described in U.S. patent application Ser. No. 17 / 584,239, which is incorporated by reference into the present disclosure, a unified TCI framework may indicate / include N≥1 DL TCI states and / or M≥1 UL TCI states, where the indicated TCI states may be at least one of: (1) DL TCI states and / or their corresponding / associated TCI state IDs; (2) UL TCI states and / or their corresponding / associated TCI state IDs; (3) joint DL and UL TCI states and / or their corresponding / associated TCI state IDs; and (4) separate DL TCI states and UL TCI states and / or their corresponding / associated TCI state IDs.

[0106] There may be various design options / channels to indicate to the UE the beam used for transmission / reception of PDCCH or PDSCH (i.e., TCI state). As described in U.S. Patent Application 17 / 584,239, which is incorporated by reference into the present disclosure: (1) in one example, MAC CE may be used to indicate to the UE the beam used for transmission / reception of PDCCH or PDSCH (i.e., TCI state and / or TCI state ID); and (2) in another example, DCI may be used to indicate to the UE the beam used for transmission / reception of PDCCH or PDSCH (i.e., TCI state and / or TCI state ID).

[0107] For example, a DL-related DCI (e.g., DCI format 1_0, DCI format 1_1, or DCI format 1_2) may be used to indicate to a UE a beam (i.e., TCI state and / or TCI state ID) for transmission / reception of a PDCCH or PDSCH, where the DL-related DCI may or may not include a DL allocation.

[0108] For another example, UL-related DCI (e.g., DCI format 0_0, DCI format 0_1, or DCI format 0_2) may be used to indicate to the UE the beam used for transmission / reception of PDCCH or PDSCH (i.e., TCI state and / or TCI state ID), where the UL-related DCI may or may not include UL scheduling grant.

[0109] However, as another example, a customized / purpose-designed DCI format may be used to indicate to the UE the beam used for transmission / reception of a PDCCH or PDSCH (ie, TCI state and / or TCI state ID).

[0110] Release-17 introduces a unified TCI framework where a unified or master or primary TCI state is signaled to the UE. The unified or master or primary TCI state may be one of the following: (1) in the case of a joint TCI state indication, where the same beam is used for DL ​​and UL channels, a joint TCI state that may be used for at least a UE-dedicated DL channel and a UE-dedicated UL channel; (2) in the case of a separate TCI state indication, where different beams are used for DL ​​and UL channels, a DL TCI state that may be used for at least a UE-dedicated DL channel; and (3) in the case of a separate TCI state indication, where different beams are used for DL ​​and UL channels, a UL TCI state that may be used for at least a UE-dedicated UL channel.

[0111] The unified (primary or primary) TCI state is the TCI state for UE-specific reception on PDSCH / PDCCH or PUSCH and all dedicated PUCCH resources based on dynamic grant / configuration grants.

[0112] As discussed above, M>1 joint DL and UL TCI states, or M>1 separate UL TCI states, or a first combination of M>1 joint DL and UL TCI states and a separate UL TCI state, or N>1 separate DL TCI states, or a second combination of N>1 joint DL and UL TCI states and a separate DL TCI state, or a third combination of N>1 joint DL and UL TCI states, separate DL TCI states, and separate UL Version 17 unified TCI can be provided to the UE by the network, for example, via MAC CE or DCI-based signaling (e.g., DCI format 1_1 or 1_2 with or without DL allocation) through the higher layer parameter DLorJointTCIState or UL-TCIState, for UE-dedicated reception on PDSCH / PDCCH or PUSCH and all dedicated PUCCH resources based on dynamic grant / configuration.

[0113] M>1 or N>1 TCI states or TCI state identification (ID) pools may be configured to the UE high layer by the network. As previously described, here, the TCI state may correspond to a separate DL TCI state provided by DLorJointTCIState, or a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState. Each of the M>1 or N>1 TCI states or TCI state ID pools configured by the high layer may be associated with an entity ID. In the present disclosure, the entity ID may correspond to at least one of the following: a PCI value, a PCI index pointing to an entry / PCI in a PCI list configured to the UE high layer, a value of CORESETPoolIndex, a value of CORESETGroupIndex, a TRP ID, a TRP-specific high layer signaling index, a CORESET ID, a resource ID / index, a resource set ID / index, etc. In the present disclosure, a list of entity IDs or a PCI list or a PCI index set may be configured to a UE higher layer through a network, wherein each PCI index points to an entry / PCI in the PCI list configured to the UE higher layer.

[0114] In one example, the first TCI state / TCI state ID pool can be associated with the lowest PCI value or the first PCI value in the PCI list configured by the higher layer, or the lowest PCI index or the first PCI index in the PCI index set, or a PCI index pointing to the lowest PCI value in the PCI list configured by the higher layer, the second TCI state / TCI state ID pool can be associated with the second lowest PCI value or the second PCI value in the PCI list configured by the higher layer, or the second lowest PCI index or the second PCI index in the PCI index set, or a PCI index pointing to the second lowest PCI value in the PCI list configured by the higher layer, and so on, and the last TCI state / TCI state ID pool can be associated with the highest PCI value or the last PCI value in the PCI list configured by the higher layer, or the highest PCI index or the last PCI index in the PCI index set, or a PCI index pointing to the highest PCI value in the PCI list configured by the higher layer.

[0115] Or equivalently, the m(or n)th TCI state / TCI state ID pool can be associated with the m(or n)th low or (high) PCI value or the m(or n)th PCI value in the PCI list configured by the higher layer, or the m(or n)th low (or high) PCI index or the first PCI index in the PCI index set, or the PCI index pointing to the m(or n)th low (or high) PCI value in the PCI list configured by the higher layer, where m∈{1,…,M} and n∈{1,…,N}.

[0116] For M=2 (or N=2), the first (or second) TCI state / TCI state ID pool can be associated with the serving cell PCI / PCI index, or the lowest PCI value or the first PCI value in the PCI list configured by the higher layer, or the lowest PCI index or the first PCI index in the PCI index set, or a PCI index pointing to the lowest PCI value in the PCI list configured by the higher layer, and the second (or first) TCI state / TCI state ID pool can be associated with a PCI / PCI index other than the serving cell PCI / PCI index, or the highest PCI value or the last PCI value in the PCI list configured by the higher layer, or the highest PCI index or the last PCI index in the PCI index set, or a PCI index pointing to the highest PCI value in the PCI list configured by the higher layer.

[0117] In another example, if two values ​​of CORESETPoolIndex (i.e., 0 and 1) are provided to the UE in the PDCCH-Config, then for M=2 (or N=2), the first (or second) TCI state / TCI state ID pool may be associated with the following values: a value of 0 for CORESETPoolIndex, or a value corresponding to the serving cell PCI / PCI index, or the lowest PCI value or the first PCI value in the PCI list configured by the higher layer, or the lowest PCI index or the first PCI index in the PCI index set, or a value pointing to the lowest PCI value in the PCI list configured by the higher layer. The CORESETPoolIndex value associated with the PCI index, and the second (or first) TCI state / TCI state ID pool can be associated with the following values: a CORESETPoolIndex value of 1, or a CORESETPoolIndex value associated with a PCI / PCI index other than the serving cell PCI / PCI index, or the highest PCI value or the last PCI value in the PCI list configured by the higher layer, or the highest PCI index or the last PCI index in the PCI index set, or a PCI index pointing to the highest PCI value in the PCI list configured by the higher layer.

[0118] In another example, each of M>1 (or N>1) TCI states / TCI state ID pools may be configured to the UE via separate high-level parameters. That is, M>1 (or N>1) separate high-level parameters may be configured to the UE via the network, each high-level parameter configuring / indicating a TCI state / TCI state ID pool. In addition, the high-level parameters configuring the TCI state / TCI state ID pool may also include / indicate the entity ID as described above. For this case, if the TCI state / TCI state ID pool and the entity ID are configured / indicated via the same high-level parameters, the TCI state / TCI state ID pool and the entity ID are associated.

[0119] In addition, when the higher layer configures M>1 or N>1 TCI states or TCI state ID pools to the UE through the network, each TCI state configured corresponds to a separate DL TCI state provided by DLorJointTCIState, or a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState,

[0120] In one example, for the mth (or nth) TCI state / TCI state ID pool including K(m) (or K(n)) TCI states / TCI state IDs, where m∈{1,...,M} and n∈{1,...,N}, the TCI state IDs in the mth (or nth) TCI state / TCI state ID pool or the TCI states in the mth (or nth) TCI state / TCI state ID pool are indexed according to 0,...,K(m)-1(or K(n)-1) or 1,...,K(m) (or K(n)). For example, for M=2 (or N=2), the first TCI state / TCI state ID pool may include K1 (e.g., 64) TCI states / TCI state IDs, and the second TCI state / TCI state ID pool may include K2 (e.g., 64) TCI states / TCI state IDs. For this example, the TCI state IDs in the first TCI state / TCI state ID pool or the TCI states in the first TCI state / TCI state ID pool can be indexed according to 0, ..., K1-1 (e.g., 0, ..., 63) or 1, ..., K1 (e.g., 1, ..., 64), and the TCI state IDs in the second TCI state / TCI state ID pool or the TCI states in the second TCI state / TCI state ID pool can be indexed according to 0, ..., K2-1 (e.g., 0, ..., 63) or 1, ..., K2 (e.g., 1, ..., 64).

[0121] In another example, the m-th (or n-th) TCI state / TCI state ID pool may include K(m) (or K(n)) TCI states / TCI state IDs, where m∈{1, ..., M} and n∈{1, ..., N}. For this case, the TCI state ID in the m-th (or n-th) TCI state / TCI state ID pool or the TCI state in the m-th (or n-th) TCI state / TCI state ID pool is selected according to (or ),…, (or or (or …、 (or ) to add index, where (or ). For example, for M=2 (or N=2), the first TCI state / TCI state ID pool may include K1 (e.g., 64) TCI states / TCI state IDs, and the second TCI state / TCI state ID pool may include K2 (e.g., 64) TCI states / TCI state IDs. For this example, the TCI state IDs in the first TCI state / TCI state ID pool or the TCI states in the first TCI state / TCI state ID pool may be indexed according to 0, ..., K1–1 (e.g., 0, ..., 63) or 1, ..., K1 (e.g., 1, ..., 64), and the TCI state IDs in the second TCI state / TCI state ID pool or the TCI states in the second TCI state / TCI state ID pool may be indexed according to K1, ..., K1+K2–1 (e.g., 64, ..., 127) or K1+1, ..., K1+K2 (e.g., 65, ..., 128).

[0122] Alternatively, a single TCI state or TCI state ID pool may be configured to the UE higher layer by the network. As described above, here, the TCI state may correspond to a separate DL TCI state provided by DLorJointTCIState, or a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState. The TCI state or TCI state ID configured in the TCI state or TCI state ID pool may be associated with an entity ID.

[0123] In the present disclosure, the entity ID may correspond to at least one of the following: a PCI value, a PCI index pointing to an entry / PCI in a PCI list configured by a higher layer to a UE, a value of a CORESETPoolIndex, a value of a CORESETGroupIndex, a TRP ID, a TRP-specific higher layer signaling index, a CORESET ID, a resource ID / index, a resource set ID / index, etc. In addition, one or more TCI states or TCI state IDs configured in a TCI state / TCI state ID pool may be associated with the same entity ID, and different TCI states or TCI state IDs configured in a TCI state / TCI state ID pool may be associated with different entity IDs. In the present disclosure, the TCI states or TCI state IDs in a TCI state / TCI state ID pool may be divided / split into M>1 (or N>1) TCI state groups, each TCI state group including one or more TCI states / TCI state IDs. The TCI states or TCI state IDs in the same TCI state group are associated with the same entity ID.

[0124] In one example, the mth (or nth) TCI state group may include K(m) (or K(n)) TCI states / TCI state IDs, where m∈{1, ..., M} and n∈{1, ..., N}. For this case, the TCI state IDs in the mth (or nth) TCI state group or the TCI states in the mth (or nth) TCI state group are determined according to (or ),…, (or )or (or …、 (or ) to add index, where (or ). For example, for M=2 (or N=2), the first TCI state group may include K1 (e.g., 32) TCI states / TCI state IDs in the TCI state / TCI state ID pool, and the second TCI state group may include K2 (e.g., 32) TCI states / TCI state IDs in the TCI state / TCI state ID pool. For this example, the TCI state IDs in the first TCI state group or the TCI states in the first TCI state group may be indexed according to 0, ..., K1-1 (e.g., 0, ..., 31) or 1, ..., K1 (e.g., 1, ..., 32), and the TCI state IDs in the second TCI state group or the TCI states in the second TCI state group may be indexed according to K1, ..., K1+K2–1 (e.g., 32, ..., 63) or K1+1, ..., K1+K2 (e.g., 33, ..., 65). For this example, the number of TCI states / TCI state IDs (e.g., K(m) or K(n), where m∈{1,…,M} and n∈{1,…,N}) in each of the TCI state groups configured in the TCI state / TCI state ID pool (e.g., the mth or nth TCI state group, where m∈{1,…,M} and n∈{1,…,N}) can be configured to the UE by the network, for example, via high-layer RRC signaling.

[0125] In another example, M>1 (or N>1) parameters (e.g., high-level RRC parameters) may be configured to the UE by the network, each parameter being associated with / corresponding to / configured for a TCI state group. Each parameter may include / indicate one or more TCI states / TCI state IDs. For this case, the TCI state group associated with a parameter may include one or more TCI states / TCI state IDs configured in the parameter.

[0126] In the present disclosure, an entity ID list or a PCI list or a PCI index set may be configured to a UE higher layer through a network, wherein each PCI index points to an entry / PCI in the PCI list configured to the UE higher layer.

[0127] In one example, a first TCI state group may be associated with the lowest PCI value or the first PCI value in a PCI list configured by a higher layer, or the lowest PCI index or the first PCI index in a PCI index set, or a PCI index pointing to the lowest PCI value in a PCI list configured by a higher layer, a second TCI state group may be associated with the second lowest PCI value or the second PCI value in a PCI list configured by a higher layer, or the second lowest PCI index or the second PCI index in a PCI index set, or a PCI index pointing to the second lowest PCI value in a PCI list configured by a higher layer, and so on, and a last TCI state group may be associated with the highest PCI value or the last PCI value in a PCI list configured by a higher layer, or the highest PCI index or the last PCI index in a PCI index set, or a PCI index pointing to the highest PCI value in a PCI list configured by a higher layer. Or equivalently, the m(or n)th TCI state group can be associated with the m(or n)th lowest or (highest) PCI value or the m(or n)th PCI value in the PCI list configured by the higher layer, or the m(or n)th lowest (or highest) PCI index or the first PCI index in the PCI index set, or the PCI index pointing to the m(or n)th lowest (or highest) PCI value in the PCI list configured by the higher layer, where m∈{1,…,M} and n∈{1,…,N}. For M=2 (or N=2), the first (or second) TCI state group can be associated with the serving cell PCI / PCI index, or the lowest PCI value or the first PCI value in the PCI list configured by the higher layer, or the lowest PCI index or the first PCI index in the PCI index set, or a PCI index pointing to the lowest PCI value in the PCI list configured by the higher layer, and the second (or first) TCI state group can be associated with a PCI / PCI index other than the serving cell PCI / PCI index, or the highest PCI value or the last PCI value in the PCI list configured by the higher layer, or the highest PCI index or the last PCI index in the PCI index set, or a PCI index pointing to the highest PCI value in the PCI list configured by the higher layer.

[0128] In another example, if two values ​​of CORESETPoolIndex (i.e., 0 and 1) are provided to the UE in the PDCCH-Config, then for M=2 (or N=2), the first (or second) TCI state group may be associated with the following values: a value of 0 for CORESETPoolIndex, or a value corresponding to the serving cell PCI / PCI index, or the lowest PCI value or the first PCI value in the PCI list configured by the higher layer, or the lowest PCI index or the first PCI index in the PCI index set, or a value corresponding to the lowest PCI value in the PCI list configured by the higher layer. The CORESETPoolIndex value associated with the PCI index, and the second (or first) TCI state group can be associated with the following values: a CORESETPoolIndex value of 1, or a CORESETPoolIndex value associated with a PCI / PCI index other than the serving cell PCI / PCI index, or the highest PCI value or the last PCI value in the PCI list configured by the higher layer, or the highest PCI index or the last PCI index in the PCI index set, or a PCI index pointing to the highest PCI value in the PCI list configured by the higher layer.

[0129] In yet another example, the (higher layer) parameter indicating one or more TCI states / TCI state IDs of a TCI state group may also include / indicate an entity ID as described above. For this case, the TCI state group and entity ID are associated if they are associated with the same (higher layer) parameter in the present disclosure.

[0130] The UE may receive one or more MAC CE sub-selection / activation commands from the network to activate one or more TCI states / TCI state IDs from one or more TCI state pools or one or more TCI state groups for mapping up to Nc≥1 (e.g., 8, 16, 32, or 64) TCI state code points in the DCI format.

[0131] In one example, the UE may receive a MAC CE subselection / activation command from the network to activate a set of Nc≥1 (e.g., 8, 16, 32, or 64) TCI state code points. In the present disclosure, an entity ID list or a PCI list or a PCI index set may be configured to the UE higher layer by the network, wherein each PCI index points to an entry / PCI in the PCI list configured to the UE higher layer.

[0132] For example, a code point may correspond to a TCI state, where the TCI state may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState.

[0133] For another example, a code point may correspond to a pair of two TCI states, wherein a first TCI state in the pair may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState, and a second TCI state in the pair may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState. For example, one TCI state in the pair may be used for a DL channel / signal, and the other TCI state in the pair may be used for a UL channel / signal.

[0134] For another example, for M=2 (or N=2), the code point may correspond to a first TCI state and a second TCI state. For this case, the first TCI state may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState, and the second TCI state may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState. In addition, the first TCI state may be activated / selected by the MAC CE from a first (or second) TCI state pool or a first (or second) TCI state group, and the second TCI state may be activated / selected by the MAC CE from a second (or first) TCI state pool or a second (or first) TCI state group.

[0135] For another example, for M=2 (or N=2), the code point may correspond to a first TCI state and a second TCI state. For this case, the first TCI state may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState, and the second TCI state may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState.

[0136] In addition, the first (or second) TCI state can be associated with: an entity ID associated with the serving cell PCI / PCI index, or the lowest entity ID or the first entity ID in a list of entity IDs configured by a higher layer, and the second (or first) TCI state can be associated with: an entity ID associated with a PCI / PCI index other than the serving cell PCI / PCI index, or the highest entity ID value or the last entity ID value in a list of entity IDs configured by a higher layer.

[0137] Alternatively, the first (or second) TCI state may be associated with a serving cell PCI / PCI index, or the lowest PCI value or the first PCI value in a PCI list configured by a higher layer, or the lowest PCI index or the first PCI index in a PCI index set, or a PCI index pointing to the lowest PCI value in a PCI list configured by a higher layer, and the second (or first) TCI state may be associated with a PCI / PCI index other than the serving cell PCI / PCI index, or the highest PCI value or the last PCI value in a PCI list configured by a higher layer, or the highest PCI index or the last PCI index in a PCI index set, or a PCI index pointing to the highest PCI value in a PCI list configured by a higher layer.

[0138] For another example, for M=2 (or N=2), the code point may correspond to a first TCI state and a second TCI state. For this case, the first TCI state may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState, and the second TCI state may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState.

[0139] In addition, if two values ​​of CORESETPoolIndex (i.e., 0 and 1) are provided to the UE in the PDCCH-Config, the first (or second) TCI state can be associated with the following values: a CORESETPoolIndex value of 0, or a CORESETPoolIndex value associated with the serving cell PCI / PCI index, or the lowest PCI value or the first PCI value in the PCI list configured by the higher layer, or the lowest PCI index or the first PCI index in the PCI index set, or a PCI index pointing to the lowest PCI value in the PCI list configured by the higher layer, and the second (or first) TCI state can be associated with the following values: a CORESETPoolIndex value of 1, or a CORESETPoolIndex value associated with a PCI / PCI index other than the serving cell PCI / PCI index, or the highest PCI value or the last PCI value in the PCI list configured by the higher layer, or the highest PCI index or the last PCI index in the PCI index set, or a PCI index pointing to the highest PCI value in the PCI list configured by the higher layer.

[0140] For another example, for M=2 (or N=2), the code point may correspond to two TCI state pairs, where each pair includes two TCI states. The first TCI state in the first pair may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState, and the second TCI state in the first pair may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState. For example, one TCI state in the first pair may be used for a DL channel / signal, and the other TCI state in the first pair may be used for a UL channel / signal.

[0141] Similarly, the first TCI state in the second pair can be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState, and the second TCI state in the second pair can be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState. For example, one TCI state in the second pair can be used for a DL channel / signal, and the other TCI state in the second pair can be used for a UL channel / signal. In addition, the first TCI state and the second TCI state in the first pair can be activated / selected by the MAC CE from a first (or second) TCI state pool or a first (or second) TCI state group, and the first TCI state and the second TCI state in the second pair can be activated / selected by the MAC CE from a second (or first) TCI state pool or a second (or first) TCI state group.

[0142] For another example, for M=2 (or N=2), the code point may correspond to two TCI state pairs, where each pair includes two TCI states. The first TCI state in the first pair may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState, and the second TCI state in the first pair may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState.

[0143] For example, one TCI state in the first pair may be used for a DL channel / signal, and the other TCI state in the first pair may be used for a UL channel / signal. Similarly, the first TCI state in the second pair may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState, and the second TCI state in the second pair may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState. For example, one TCI state in the second pair may be used for a DL channel / signal, and the other TCI state in the second pair may be used for a UL channel / signal.

[0144] In addition, the first TCI state and the second TCI state in the first (or second) pair can be associated with: an entity ID associated with the serving cell PCI / PCI index, or the lowest entity ID value or the first entity ID value in a list of entity IDs configured by a higher layer, and the first TCI state and the second TCI state in the second (or first) pair can be associated with: an entity ID associated with a PCI / PCI index other than the serving cell PCI / PCI index, or the highest entity ID value or the last entity ID value in a list of entity IDs configured by a higher layer.

[0145] Alternatively, the first TCI state and the second TCI state in the first (or second) pair can be associated with the serving cell PCI / PCI index, or the lowest PCI value or the first PCI value in a PCI list configured by a higher layer, or the lowest PCI index or the first PCI index in a PCI index set, or a PCI index pointing to the lowest PCI value in a PCI list configured by a higher layer, and the first TCI state and the second TCI state in the second (or first) pair can be associated with a PCI / PCI index other than the serving cell PCI / PCI index, or the highest PCI value or the last PCI value in a PCI list configured by a higher layer, or the highest PCI index or the last PCI index in a PCI index set, or a PCI index pointing to the highest PCI value in a PCI list configured by a higher layer.

[0146] For another example, for M=2 (or N=2), the code point may correspond to two TCI state pairs, where each pair includes two TCI states. The first TCI state in the first pair may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState, and the second TCI state in the first pair may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState. For example, one TCI state in the first pair may be used for a DL channel / signal, and the other TCI state in the first pair may be used for a UL channel / signal.

[0147] Similarly, the first TCI state in the second pair may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState, and the second TCI state in the second pair may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState. For example, one TCI state in the second pair may be used for a DL channel / signal, and the other TCI state in the second pair may be used for a UL channel / signal.

[0148] In addition, if two values ​​of CORESETPoolIndex (i.e., 0 and 1) are provided to the UE in the PDCCH-Config, the first TCI state and the second TCI state in the first (or second) pair can be associated with the following values: the value of CORESETPoolIndex is 0, or associated with the serving cell PCI / PCI index, or the lowest PCI value or the first PCI value in the PCI list configured by the higher layer, or the lowest PCI index or the first PCI index in the PCI index set, or the PCI index pointing to the lowest PCI value in the PCI list configured by the higher layer The first TCI state and the second TCI state in the second (or first) pair can be associated with the following values: a CORESETPoolIndex value of 1, or a CORESETPoolIndex value associated with a PCI / PCI index other than a serving cell PCI / PCI index, or the highest PCI value or the last PCI value in a PCI list configured by a higher layer, or the highest PCI index or the last PCI index in a PCI index set, or a PCI index pointing to the highest PCI value in a PCI list configured by a higher layer.

[0149] As described above, one or more of the Nc≥1 (e.g., 8, 16, 32, or 64) TCI state code points activated by the MAC CE may correspond to a TCI state code point. In addition, the "Transmission Configuration Indication" field in the DCI format 1_1 or 1_2 with or without DL allocation may indicate a TCI state code point from the Nc≥1 (e.g., 8, 16, 32, or 64) activated TCI state code points in the present disclosure.

[0150] Alternatively, DCI format 1_1 with or without DL allocation or DCI format 1_2 with or without DL allocation may indicate / include a first "transmission configuration indication" field (or represented as a first TCI field or TCI field 1) indicating a first TCI state code point, and a second "transmission configuration indication" field (or represented as a second TCI field or TCI field 2) indicating a second TCI state code point. In one example, the first TCI field or the second TCI field may be a new and dedicated TCI field added / configured in DCI format 1_1 or 1_2 (with or without DL allocation), which is different from the existing DCI field configured therein. In another example, the first TCI field or the second TCI field may correspond to the existing "transmission configuration indication" field in DCI format 1_1 or 1_2 (with or without DL allocation). When two TCI fields are configured for beam indication in DCI format 1_1 or 1_2 (with or without DL allocation), the first or second TCI state code point may be from Nc≥1 (e.g., 8, 16, 32, or 64) activated TCI state code points.

[0151] Optionally, the UE may receive an auxiliary MAC CE sub-selection / activation command from the network, thereby selecting / activating one or more (Nc'≥1, for example, Nc'=8, 16, 32, or 64) TCI state code points from a set of Nc activated TCI state code points as a subset of Nc' TCI state code points. For this case, the "Transmission Configuration Indication" field in DCI format 1_1 or 1_2 (with or without DL allocation) may indicate a TCI state code point from a subset of Nc'≥1 (for example, 8, 16, 32, or 64) TCI state code points, or the first or second TCI state code point indicated by the first or second TCI field (if configured) in DCI format 1_1 or 1_2 (with or without DL allocation) may correspond to a TCI state code point from a subset of Nc'≥1 (for example, 8, 16, 32, or 64) TCI state code points.

[0152] In addition, if DCI format 1_1 or 1_2 for beam indication has DL allocation or the number Nc of TCI state code points to be activated by MAC CE is less than a threshold, the TCI state code point indicated in the "Transmission Configuration Indication" field may correspond to / indicate only a single TCI state or a single TCI state pair (e.g., TCI state code point) for single TRP operation. If two TCI fields are allowed to be configured in the DCI format for beam indication, and if DCI format 1_1 or 1_2 for beam indication has DL allocation or the number Nc of TCI state code points to be activated by MAC CE is less than a threshold, only one TCI field (e.g., TCI field 1 or TCI field 2) may be configured in the DCI format, and the TCI state code point indicated in the corresponding TCI field (e.g., the first TCI state code point or the second TCI state code point) may correspond to / indicate only a single TCI state or a single TCI state pair (e.g., TCI state code point) for single TRP operation. If DCI format 1_1 or 1_2 for beam indication has DL allocation, or the number Nc of TCI state code points to be activated by MAC CE is less than a threshold, then each MAC CE activated TCI state code point may correspond to / indicate only a single TCI state or a single TCI state pair (e.g., TCI state code point) for single TRP operation. In the present disclosure, the threshold may be (1) fixed, e.g., 8, 16, 32, or 64, or (2) configured by the network via high-layer RRC signaling or / and MAC CE command or / and DCI-based signaling.

[0153] In another example, for M=2 (or N=2), the UE may receive a MAC CE sub-selection / activation command from the network to activate two groups of TCI state code points. For this case, the first group may contain NC≥1 (e.g., 8, 16, 32, or 64) TCI state code points, and the second group may contain Nc2≥1 (e.g., 8, 16, 32, or 64) TCI state code points. Alternatively, the UE may receive from the network a first MAC CE sub-selection / activation command to activate a first group of Nc1≥1 (e.g., 8, 16, 32, or 64) TCI state code points, and a second MAC CE sub-selection / activation command to activate a second group of Nc2≥1 (e.g., 8, 16, 32, or 64) TCI state code points.

[0154] For example, a code point in the first set of code points or the second set of code points may correspond to a TCI state, where the TCI state may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState.

[0155] For another example, a code point in the first set of code points or the second code point may correspond to a pair of two TCI states, wherein the first TCI state in the pair may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState, and the second TCI state in the pair may be a separate DL TCI state provided by DLorJointTCIState, a separate UL TCI state provided by UL-TCIState, or a joint DL and UL TCI state provided by DLorJointTCIState. For example, one TCI state in the pair may be used for a DL channel / signal, and the other TCI state in the pair may be used for a UL channel / signal.

[0156] In the present disclosure, an entity ID list or a PCI list or a PCI index set may be configured to a UE higher layer through a network, wherein each PCI index points to an entry / PCI in the PCI list configured to the UE higher layer.

[0157] For example, the TCI state indicated by the first group of TCI state code points can be activated / selected by the MAC CE from the first (or second) TCI state pool or the first (or second) TCI state group, and the TCI state indicated by the second group of TCI state code points can be activated / selected by the MAC CE from the second (or first) TCI state pool or the second (or first) TCI state group.

[0158] For another example, the TCI state indicated by the first (or second) group of TCI state code points may be associated with: an entity ID associated with a serving cell PCI / PCI index, or a lowest entity ID value or a first entity ID value in an entity ID list configured by a higher layer, and the TCI state indicated by the second (or first) group of TCI state code points may be associated with: an entity ID associated with a PCI / PCI index other than a serving cell PCI / PCI index, or a highest entity ID value or a last entity ID value in an entity ID list configured by a higher layer.

[0159] Alternatively, the TCI state indicated by the first (or second) group of TCI status code points can be associated with the serving cell PCI / PCI index, or the lowest PCI value or the first PCI value in a PCI list configured by a higher layer, or the lowest PCI index or the first PCI index in a PCI index set, or a PCI index pointing to the lowest PCI value in a PCI list configured by a higher layer, and the TCI state indicated by the second (or first) group of TCI status code points can be associated with a PCI / PCI index other than the serving cell PCI / PCI index, or the highest PCI value or the last PCI value in a PCI list configured by a higher layer, or the highest PCI index or the last PCI index in a PCI index set, or a PCI index pointing to the highest PCI value in a PCI list configured by a higher layer.

[0160] For another example, if two values ​​of CORESETPoolIndex (i.e., 0 and 1) are provided to the UE in the PDCCH-Config, the TCI state indicated by the first (or second) set of TCI state code points may be associated with the following values: a value of 0 for CORESETPoolIndex, or a value corresponding to the serving cell PCI / PCI index, or the lowest PCI value or the first PCI value in a PCI list configured by a higher layer, or the lowest PCI index or the first PCI index in a PCI index set, or a PCI index pointing to the lowest PCI value in a PCI list configured by a higher layer. The associated CORESETPoolIndex value, and the TCI state indicated by the second (or first) group of TCI state code points can be associated with the following values: a CORESETPoolIndex value of 1, or a CORESETPoolIndex value associated with a PCI / PCI index other than a serving cell PCI / PCI index, or the highest PCI value or the last PCI value in a PCI list configured by a higher layer, or the highest PCI index or the last PCI index in a PCI index set, or a PCI index pointing to the highest PCI value in a PCI list configured by a higher layer.

[0161] For another example, the first MAC CE sub-selection / activation command may include / indicate a first entity ID, and the second MAC CE sub-selection / activation command may include / indicate a second entity ID. In the present disclosure, the first entity ID or the second entity ID may correspond to at least one of the following: a PCI value, a PCI index pointing to an entry / PCI in a PCI list configured to a UE higher layer, a value of CORESETPoolIndex, a value of CORESETGroupIndex, a TRP ID, a TRP-specific higher layer signaling index, a CORESET ID, a resource ID / index, a resource set ID / index, etc. For this case, the TCI state indicated by the first set of TCI state code points activated / selected by the first MAC CE sub-selection / activation command may be associated with the first entity ID, and the TCI state indicated by the second set of TCI state code points activated / selected by the second MAC CE sub-selection / activation command may be associated with the second entity ID.

[0162] For DCI-based beam indication, DCI format 1_1 with or without DL allocation or DCI format 1_2 with or without DL allocation may indicate / include a first "transmission configuration indication" field (or represented as a first TCI field or TCI field 1) indicating a first TCI state code point, and a second "transmission configuration indication" field (represented as a second TCI field or TCI field 2) indicating a second TCI state code point. In one example, the first TCI field or the second TCI field may be a new and dedicated TCI field added / configured in DCI format 1_1 or 1_2 (with or without DL allocation), which is different from the existing DCI field configured therein. In another example, the first TCI field or the second TCI field may correspond to an existing "transmission configuration indication" field in DCI format 1_1 or 1_2 (with or without DL allocation). In yet another example, the first TCI field or the second TCI field may be configured by repurposing one or more of the existing DCI fields in DCI format 1_1 or 1_2 (with or without DL allocation).

[0163] In the present disclosure, an entity ID list or a PCI list or a PCI index set may be configured to a higher layer of the UE through the network, wherein each PCI index points to an entry / PCI in the PCI list configured by the higher layer to the UE.

[0164] For example, the TCI state indicated by the first TCI state code point / first TCI field can be activated / selected by the MAC CE from the first (or second) TCI state pool or the first (or second) TCI state group, and the TCI state indicated by the second TCI state code point / second TCI field can be activated / selected by the MAC CE from the second (or first) TCI state pool or the second (or first) TCI state group.

[0165] For another example, the first (or second) TCI status code point / first (or second) TCI field may be associated with: an entity ID associated with a serving cell PCI / PCI index, or the lowest entity ID value or the first entity ID value in a list of entity IDs configured by a higher layer, and the second (or first) TCI status code point / second (or first) TCI field may be associated with: an entity ID associated with a PCI / PCI index other than a serving cell PCI / PCI index, or the highest entity ID value or the last entity ID value in a list of entity IDs configured by a higher layer.

[0166] Alternatively, the first (or second) TCI status code point / first (or second) TCI field can be associated with the serving cell PCI / PCI index, or the lowest PCI value or the first PCI value in a PCI list configured by a higher layer, or the lowest PCI index or the first PCI index in a PCI index set, or a PCI index pointing to the lowest PCI value in a PCI list configured by a higher layer, and the second (or first) TCI status code point / second (or first) TCI field can be associated with a PCI / PCI index other than the serving cell PCI / PCI index, or the highest PCI value or the last PCI value in a PCI list configured by a higher layer, or the highest PCI index or the last PCI index in a PCI index set, or a PCI index pointing to the highest PCI value in a PCI list configured by a higher layer.

[0167] For another example, if two values ​​of CORESETPoolIndex (i.e., 0 and 1) are provided to the UE in the PDCCH-Config, the first (or second) TCI state code point / first (or second) TCI field may be associated with the following values: a value of 0 for CORESETPoolIndex, or a value associated with the serving cell PCI / PCI index, or the lowest PCI value or the first PCI value in a PCI list configured by a higher layer, or the lowest PCI index or the first PCI index in a PCI index set, or a PCI index pointing to the lowest PCI value in a PCI list configured by a higher layer. The associated CORESETPoolIndex value, and the second (or first) TCI status code point / second (or first) TCI field can be associated with the following values: a CORESETPoolIndex value of 1, or a CORESETPoolIndex value associated with a PCI / PCI index other than the serving cell PCI / PCI index, or the highest PCI value or the last PCI value in the PCI list configured by the higher layer, or the highest PCI index or the last PCI index in the PCI index set, or a PCI index pointing to the highest PCI value in the PCI list configured by the higher layer.

[0168] Furthermore, in one example, the first TCI field may indicate a first TCI status code point from a first set of TCI status code points, and the second TCI field may indicate a second TCI status code point from a second set of TCI status code points.

[0169] In another example, the first TCI field may indicate a first TCI status code point from the second set of TCI status code points, and the second TCI field may indicate a second TCI status code point from the first set of TCI status code points.

[0170] In another example, the UE may receive a first one-bit flag for a first TCI field, wherein "0" indicates that the first TCI state code point is indicated from a first (or second) group of TCI state code points, and "1" indicates that the first TCI state code point is indicated from a second (or first) group of TCI state code points; in addition, the UE may receive a second one-bit flag for a second TCI field, wherein "0" indicates that the second TCI state code point is indicated from a first (or second) group of TCI state code points, and "1" indicates that the second TCI state code point is indicated from a second (or first) group of TCI state code points. The first or second one-bit flag indicator may be configured to the UE by the network via high-level RRC signaling or MAC CE command or DCI-based signaling.

[0171] If the DCI format 1_1 or 1_2 for beam indication carries DL allocation, or the number Nc1 of TCI state code points in the first set of TCI state code points to be activated by the MAC CE, or the number Nc2 of TCI state code points in the second set of TCI state code points to be activated by the MAC CE, or the total number Nc1+Nc2 of TCI state code points in the first and second sets of TCI state code points to be activated by the MAC CE is less than a threshold, then the DCI format 1_1 or 1_2 may indicate only a single TCI field (e.g., the first or second TCI field) for single TRP operation, and the TCI state code point indicated in the TCI field (e.g., the first or second TCI state code point) may correspond to / indicate only a single TCI state or a single TCI state pair (e.g., selected from the first or second set of TCI state code points). In the present disclosure, the threshold may be (1) fixed, for example, 8, 16, 32, or 64, or (2) configured by the network via higher layer RRC signaling or / and MAC CE command or / and DCI-based signaling.

[0172] For DCI-based beam indication, DCI format 1_1 with or without DL allocation or DCI format 1_2 with or without DL allocation may indicate / include a single "transmission configuration indication" field, which indicates the TCI status code point. A new one-bit flag indicator may be indicated / added in DCI format 1_1 or 1_2 with or without DL allocation; the one-bit flag indicator is used to indicate the mapping / association between the TCI field and the TRP. Alternatively, the new data indicator (NDI) field in DCI format 1_1 or 1_2 with or without DL allocation may be used to indicate the mapping / association between the TCI field and the TRP, and the NDI switches with each new transmission. It should be noted that other existing one-bit flag indicators in DCI format 1_1 or 1_2 with or without DL allocation may also be reused to indicate the mapping / association between the TCI field and the TRP. In the present disclosure, an entity ID list or a PCI list or a PCI index set may be configured to a higher layer of the UE through the network, wherein each PCI index points to an entry / PCI in the PCI list configured by the higher layer to the UE.

[0173] For example, if the one-bit flag indicator / NDI is set to "0" or the NDI is switched, the TCI state indicated by the TCI state code point / TCI field can be activated / selected by the MAC CE from the first (or second) TCI state pool or the first (or second) TCI state group, and if the one-bit flag indicator / NDI is set to "1" or the NDI is not switched, the TCI state indicated by the TCI state code point / TCI field can be activated / selected by the MAC CE from the second (or first) TCI state pool or the second (or first) TCI state group.

[0174] For another example, if the one-bit flag indicator / NDI is set to "0" (or "1") or the NDI is switched (or not switched), the TCI status code point / TCI field may be associated with: an entity ID associated with the serving cell PCI / PCI index, or the lowest entity ID value or the first entity ID value in a list of entity IDs configured by a higher layer, and if the one-bit flag indicator / NDI is set to "1" (or "0") or the NDI is not switched (or switched), the TCI status code point / TCI field may be associated with: an entity ID associated with a PCI / PCI index other than the serving cell PCI / PCI index, or the highest entity ID value or the last entity ID value in a list of entity IDs configured by a higher layer.

[0175] Alternatively, if the one-bit flag indicator / NDI is set to "0" (or "1") or the NDI is switched (or not switched), the TCI status code point / TCI field can be associated with the serving cell PCI / PCI index, or the lowest PCI value or the first PCI value in the PCI list configured by the higher layer, or the lowest PCI index or the first PCI index in the PCI index set, or the PCI index pointing to the lowest PCI value in the PCI list configured by the higher layer, and if the one-bit flag indicator / NDI is set to "1" (or "0") or the NDI is not switched (or switched), the TCI status code point / TCI field can be associated with a PCI / PCI index other than the serving cell PCI / PCI index, or the highest PCI value or the last PCI value in the PCI list configured by the higher layer, or the highest PCI index or the last PCI index in the PCI index set, or the PCI index pointing to the highest PCI value in the PCI list configured by the higher layer.

[0176] However, for another example, if two values ​​of CORESETPoolIndex (i.e., 0 and 1) are provided to the UE in the PDCCH-Config: if the one-bit flag indicator / NDI is set to "0" (or "1") or the NDI is switched (or not switched), the TCI status code point / TCI field can be associated with the following values: the value of CORESETPoolIndex is 0; or associated with the serving cell PCI / PCI index, or the lowest PCI value or the first PCI value in the PCI list configured by the higher layer, or the lowest PCI index or the first PCI index in the PCI index set, or the PCI index pointing to the lowest PCI value in the PCI list configured by the higher layer. The TCI status code point / TCI field may be associated with a CORESETPoolIndex value associated with the serving cell PCI / PCI index, and if the one-bit flag indicator / NDI is set to "1" (or "0") or the NDI is not toggled (or is toggled), the TCI status code point / TCI field may be associated with the following values: a CORESETPoolIndex value of 1; or a CORESETPoolIndex value associated with a PCI / PCI index other than the serving cell PCI / PCI index, or the highest PCI value or the last PCI value in a PCI list configured by a higher layer, or the highest PCI index or the last PCI index in a PCI index set, or a PCI index pointing to the highest PCI value in a PCI list configured by a higher layer.

[0177] In the present disclosure, an entity ID list or a PCI list or a PCI index set may be configured to a UE higher layer through a network, wherein each PCI index points to an entry / PCI in the PCI list configured to the UE higher layer.

[0178] In one example, a new one-bit flag indicator may be indicated / added in DCI format 1_1 or 1_2 with or without DL allocation; the one-bit flag indicator is used to indicate the mapping / association between the TCI field / TCI code point and a set of code points (e.g., the first set or the second set of code points).

[0179] Alternatively, a new data indicator (NDI) field in a DCI format 1_1 or 1_2 with or without DL allocation can be used to indicate a mapping / association between a TCI field / TCI state code point and a set of code points (e.g., a first set or a second set of code points), and the NDI switches with each new transmission. It should be noted that other existing one-bit flag indicators in a DCI format 1_1 or 1_2 with or without DL allocation can also be reused to indicate a mapping / association between a TCI field / TCI state code point and a set of code points (e.g., a first set or a second set of code points). For this case, if the one-bit flag indicator / NDI is set to "0" (or "1") or the NDI is switched (or not switched), the TCI field can indicate a TCI state code point from the first set of TCI state code points, and if the one-bit flag indicator / NDI is set to "1" (or "0") or the NDI is not switched (or switched), the TCI field can indicate a TCI state code point from the second set of TCI state code points.

[0180] In another example, the TCI field may indicate a TCI status code point from a third set of TCI status code points, wherein the third set of TCI status code points includes one or more TCI status code points from a first set of TCI status code points and one or more TCI status code points from a second set of TCI status code points. For example, the first set of TCI status code points may include 8 TCI status code points indicated by TCI_0, TCI_1, TCI_2, TCI_3, TCI_4, TCI_5, TCI_6, or TCI_7, and the second set of TCI status code points may include 8 TCI status code points indicated by TCI_A, TCI_B, TCI_C, TCI_D, TCI_E, TCI_F, TCI_G, or TCI_H. The third set of TCI status code points may then include TCI_0, TCI_1, TCI_2, TCI_3, TCI_A, TCI_B, TCI_C, and TCI_D.

[0181] The third set of TCI status code points may include any combination of TCI status code points from the first set or the second set. The TCI status code points configured in the first set or the second set may be determined / selected into the third set according to at least one of the following: (1) fixed in the system specification, or (2) configured by the network, for example, via high-layer RRC signaling and / or MAC CE command and / or dynamic DCI-based signaling.

[0182] If the DCI format 1_1 or 1_2 for beam indication carries a DL allocation, or the number Nc1 of TCI state code points in the first set of TCI state code points to be activated by the MAC CE, or the number Nc2 of TCI state code points in the second set of TCI state code points to be activated by the MAC CE, or the total number Nc1+Nc2 of TCI state code points in the first set and the second set of TCI state code points to be activated by the MAC CE is less than a threshold, the TCI state code point indicated in the "Transmission Configuration Indication" may correspond to / indicate only a single TCI state or a single TCI state pair (e.g., selected from the first set or the second set of TCI state code points) for single TRP operation. In the present disclosure, the threshold may be (1) fixed, e.g., 8, 16, 32, or 64, or (2) configured by the network via higher-layer RRC signaling or / and MAC CE commands or / and DCI-based signaling.

[0183] The UE may receive an "SRS resource set indicator" field in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single-TRP or multi-TRP operation. Alternatively, one or more existing fields in DCI format 0_1 ​​or 0_2 may be used / reused to indicate one or more SRS resource sets for single-TRP or multi-TRP operation. Specifically, the "SRS resource set indicator" field in DCI format 0_1 ​​or 0_2 can be a 0-bit or 2-bit indicator, configured as follows: If (1) the higher-level parameter txConfig is set to nonCodeBook, and there are two SRS resource sets configured by srs-ResourceSetToAddModList and associated with the use of the values ​​"SRS resource set indicator" and "nonCodeBook SRS resource set indicator", or (2) the higher-level parameter txConfig is set to codebook, and there are two SRS resource sets configured by srs-ResourceSetToAddModList and associated with the use of the values ​​"SRS resource set indicator" and "nonCodeBook SRS resource set indicator", then the "SRS resource set indicator" corresponds to a 2-bit indicator. Otherwise, the "SRS resource set indicator" corresponds to a 0-bit indicator.

[0184] When the "SRS resource set indicator" field in DCI format 0_1 ​​or 0_2 is a 2-bit indicator, the corresponding bit field / index can be configured according to Table 1.

[0185] Table 1 "SRS resource set indicator" field in DCI format 0_1 ​​or 0_2

[0186]

[0187] In Table 1, the first and second SRS resource sets have lower and higher srs-ResourceSetIds configured by the higher-layer parameter srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2, respectively, and are associated with the higher-layer parameter usage of the value “SRS resource set indicator “nonCodeBook” SRS resource set indicator” (if txConfig=nonCodebook) or “SRS resource set indicator “codeBook” SRS resource set indicator” (if txConfig=codebook). When only one SRS resource set is configured by the higher-layer parameter srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2, and one SRS resource set is associated with the higher-layer parameter usage of the value “SRS resource set indicator “codebook” SRS resource set indicator” or “SRS resource set indicator “nonCodeBook” SRS resource set indicator”, respectively, the first SRS resource set is the SRS resource set.

[0188] In addition, for DCI format 0_2, the first and second SRS resource sets configured by the higher layer parameter srs-ResourceSetToAddModListDCI-0-2 are composed of the first N SRS,0_2 SRS resources and other configurations (if any) in the first and second SRS resource sets configured by the high-level parameter srs-ResourceSetToAddModList, and are associated with the high-level parameter usage of the value "SRS resource set indicator "codeBook" SRS resource set indicator" or "SRS resource set indicator "nonCodeBook" SRS resource set indicator", except for the high-level parameters "SRS resource set indicator "srs-ResourceSetId" SRS resource set indicator" and "SRS resource set indicator "srs-ResourceIdList" SRS resource set indicator".

[0189] In one embodiment of the present disclosure, the UE may receive one or more PDCCH candidates in one or more search space sets configured with the high-level parameter searchSpaceLinking in one or more CORESETs. One or more PDCCH candidates configured with the same high-level parameter searchSpaceLinking may contain / carry / transmit the same DCI payload. In the present disclosure, the same DCI payload may correspond to any DCI format, for example, DCI format 1_1 or 1_2 or DCI format 0_1 ​​or 0_2 with or without DL allocation for beam indication. As previously described, the UE may receive M>1 (or N>1) TCI states or M>1 (or N>1) TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in the corresponding DCI in a DCI (for example, DCI format 1_1 or 1_2 with or without DL allocation). One or more of the indicated M>1 (or N>1) TCI states or TCI state pairs can be associated with / mapped to one or more CORESETs, in which one or more PDCCH candidates in one or more search space sets configured with the same high-level parameter searchSpaceLinking are received - also known as beam indication for PDCCH repetition.

[0190] As described above, the UE may receive an SRS resource set indicator (e.g., in an "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) indicating one or more SRS resource sets for single TRP or multi-TRP operation. In the present disclosure, the SRS resource set indicator in DCI format 0_1 ​​or 0_2 may also be used / applied to indicate at least one of the following: (1) switching between single TRP PDCCH reception and multi-TRP PDCCH (repeated) reception, (2) one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs for single TRPPDCCH reception, and (3) switching the order of the indicated M>1 (or N>1) TCI states or TCI state pairs.

[0191] In one example, the UE may first receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), as specified in the examples and corresponding sub-examples of the present disclosure, wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more CORESETs, in which one or more PDCCH candidates in one or more search space sets configured with a higher-layer parameter searchSpaceLinking are received. The UE may also receive an SRS resource set indicator (e.g., in an "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2). For example, if the bit field of the SRS resource set indicator is set to "00" or "01" or the index of the SRS resource set indicator is set to "0" or "1" according to Table 1, or the SRS resource set indicator field is not configured / does not exist, the UE can use only the indicated M>1 (or N>1) TCI states or one of the TCI state pairs to receive / monitor one or more PDCCH candidates in one or more CORESETs, i.e., PDCCH reception in a single TRP system; if the bit field of the SRS resource set indicator is set to "10" or "11" or the index of the SRS resource set indicator is set to "2" or "3" according to Table 1, or the SRS resource set indicator is not configured / does not exist, the UE can use one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same high-level parameter searchSpaceLinking in one or more CORESETs, i.e., PDCCH repeated reception in a multi-TRP system. More specifically, when the bit field of the SRS resource set indicator is set to "00" or "10" or the index of the SRS resource set indicator is set to "0" or "1" according to Table 1 or the SRS resource set indicator is not configured / does not exist (i.e., for PDCCH reception in a single TRP system),

[0192] For example, the UE may use the first TCI state among the indicated M>1 (or N>1) TCI states or the TCI state with the lowest (or highest) TCI state ID or a separate DL TCI state or a joint DL and UL TCI state in the first TCI state pair or a separate DL TCI state or a joint DL and UL TCI state in a TCI state pair associated with the lowest (or highest) TCI state ID among the indicated M>1 (or N>1) TCI state pairs to receive / monitor one or more PDCCH candidates in one or more CORESETs.

[0193] For another example, the UE may use a second TCI state among the indicated M>1 (or N>1) TCI states or a TCI state with a second lowest (or second highest) TCI state ID or a separate DL TCI state or a joint DL and UL TCI state in a second TCI state pair or a separate DL TCI state or a joint DL and UL TCI state in a TCI state pair associated with the second lowest (or second highest) TCI state ID in the indicated M>1 (or N>1) TCI state pair to receive / monitor one or more PDCCH candidates in one or more CORESETs.

[0194] For another example, the UE may use the last TCI state among the indicated M>1 (or N>1) TCI states or the TCI state with the highest (or lowest) TCI state ID or the separate DL TCI state or the joint DL and UL TCI state in the last TCI state pair or the separate DL TCI state or the joint DL and UL TCI state in the TCI state pair associated with the highest (or lowest) TCI state ID among the indicated M>1 (or N>1) TCI state pairs to receive / monitor one or more PDCCH candidates in one or more CORESETs.

[0195] For another example, the UE may use the mth (or nth) TCI state among the indicated M>1 (or N>1) TCI states or the TCI state with the mth (or nth) lowest (or highest) TCI state ID or the separate DL TCI state or the joint DL and UL TCI state in the mth (or nth) TCI state pair or the separate DL TCI state or the joint DL and UL TCI state in the TCI state pair associated with the mth (or nth) lowest (or highest) TCI state ID in the indicated M>1 (or N>1) TCI state pair to receive / monitor one or more PDCCH candidates in one or more CORESETs, where m∈{1, ..., M} and n∈{1, ..., N}. In this example, the index m (or n) may be determined according to at least one of the following: (1) fixed in the system specification, and (2) configured by the network, for example, via high-layer RRC signaling or MAC CE command or DCI-based signaling.

[0196] For another example, the UE may use a separate DL TCI state or a joint DL and UL TCI state in the indicated M>1 (or N>1) TCI states to receive / monitor one or more PDCCH candidates in one or more CORESETs. In this example, only one of the indicated M>1 (or N>1) TCI states may correspond to a separate DL TCI state or a joint DL and UL TCI state.

[0197] For another example, the UE may be configured with a list of K entity IDs through the network high layer. In the present disclosure, the entity ID may correspond to at least one of the following: a PCI value, a PCI index pointing to an entry / PCI in a PCI list configured by the high layer to the UE, a value of CORESETPoolIndex, a value of CORESETGroupIndex, a TRP ID, a TRP-specific high-layer signaling index, a CORESET ID, a resource ID / index, a resource set ID / index, etc. The UE may use a TCI state or TCI state pair associated with the first entity ID or the second entity ID or the last entity ID or the lowest entity ID or the highest entity ID or the second lowest (or second highest) entity ID or an entity ID associated with a serving cell PCI / PCI index or an entity ID associated with a PCI / PCI index different from the serving cell PCI / PCI index or the kth entity ID in a list of K entity IDs or the kth lowest (or highest) entity ID to receive / monitor one or more PDCCH candidates in one or more CORESETs, where k∈{1,…,K}. In this example, the index k may be determined according to at least one of the following: (1) fixed in the system specification, and (2) configured by the network, such as via high-layer RRC signaling or MAC CE command or DCI-based signaling. In addition, K may be equal to M (or N).

[0198] For another example, the UE may be configured with a list of L PCIs through the network high layer. The UE may use the TCI state or TCI state pair associated with the first PCI or the second PCI or the last PCI or the lowest PCI or the highest PCI or the second lowest (or second highest) PCI or the serving cell PCI or the PCI different from the serving cell PCI or the lth PCI or the lth lowest (or highest) PCI in the list of L PCIs to receive / monitor one or more PDCCH candidates in one or more CORESETs, where l∈{1,…,L}. Alternatively, the UE may determine a list of L PCI indices 0,…,L-1 or 1,…,L, where each PCI index points to an entry in the list of L PCIs. For this case, the UE may use a TCI state or TCI state pair associated with the first PCI index or the second PCI index or the last PCI index or the lowest PCI index or the highest PCI index or the second lowest (or second highest) PCI index or the serving cell PCI index or a PCI index different from the serving cell PCI index or the lth PCI index or the lth lowest (or highest) PCI index in the list of L PCI indices to receive / monitor one or more PDCCH candidates in one or more CORESETs, where l∈{1,…,L}. In this example, the index l may be determined according to at least one of the following: (1) fixed in the system specification, and (2) configured by the network, such as via high-layer RRC signaling or MAC CE command or DCI-based signaling. In addition, L may be equal to M (or N).

[0199] For another example, two CORESETPoolIndex values ​​(i.e., 0 and 1) may be provided to the UE in the PDCCH-Config for one or more CORESETs. The UE may use a TCI state or TCI state pair associated with a CORESETPoolIndex value of 0 or a CORESETPoolIndex value of 1 or a CORESETPoolIndex value of x to receive / monitor one or more PDCCH candidates in one or more CORESETs, where x∈{0,1}. In this example, the value x may be determined according to at least one of: (1) fixed in the system specification, and (2) configured by the network, such as via high-level RRC signaling or MAC CE command or DCI-based signaling.

[0200] In another example, the UE may first receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), as specified in the examples and corresponding sub-examples of the present disclosure, wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more CORESETs, in which one or more PDCCH candidates in one or more search space sets configured with a higher-layer parameter searchSpaceLinking are received. As described above, the UE may receive an SRS resource set indicator (e.g., in an "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. If the bit field of the SRS resource set indicator is set to "00" (or "01") or the index of the SRS resource set indicator is set to "0" (or "1") according to Table 1, the UE can use one of the indicated M>1 (or N>1) TCI states or TCI state pairs (primary TCI state or TCI state pair) to receive / monitor one or more PDCCH candidates in one or more CORESETs, i.e., PDCCH reception in a single TRP system; if the bit field of the SRS resource set indicator is set to "01" (or "00") or the index of the SRS resource set indicator is set to "1" (or "0") according to Table 1, the UE can use the other one of the indicated M>1 (or N>1) TCI states or TCI state pairs (secondary TCI state or secondary TCI state pair) to receive / monitor one or more PDCCH candidates in one or more CORESETs, i.e., PDCCH reception in a single TRP system. Various design examples for determining the primary TCI state or TCI state pair or the secondary TCI state or TCI state pair are provided below.

[0201] For example, the primary TCI state or TCI state pair may correspond to the first (or second) TCI state or the TCI state with the lowest (or second lowest / highest) TCI state ID among the indicated M>1 (or N>1) TCI states, or the separate DL TCI state or the joint DL and UL TCI state in the first (or second) TCI state pair, or the separate DL TCI state or the joint DL and UL TCI state in the TCI state pair associated with the lowest (or second lowest / highest) TCI state ID in the indicated M>1 (or N>1) TCI state pair, and the secondary TCI state or TCI state pair may correspond to the second (or first) TCI state or the TCI state with the second lowest / highest (or lowest) TCI state ID among the indicated M>1 (or N>1) TCI states, or the separate DL TCI state or the joint DL and UL TCI state in the second (or first) TCI state pair. TCI state, either a single DL TCI state or a joint DL and UL TCI state in the TCI state pair associated with the second lowest / highest (or lowest) TCI state ID in the indicated M>1 (or N>1) TCI state pair.

[0202] For another example, the primary TCI state or TCI state pair may correspond to the first (or last) TCI state or the TCI state with the lowest (or highest) TCI state ID among the indicated M>1 (or N>1) TCI states, or the separate DL TCI state or the joint DL and UL TCI state in the first (or last) TCI state pair, or the separate DL TCI state or the joint DL and UL TCI state in the TCI state pair associated with the lowest (or highest) TCI state ID in the indicated M>1 (or N>1) TCI state pair, and the secondary TCI state or TCI state pair may correspond to the last (or first) TCI state or the TCI state with the highest (or lowest) TCI state ID among the indicated M>1 (or N>1) TCI states, or the separate DL TCI state or the joint DL and UL TCI state in the last (or first) TCI state pair, or the separate DL TCI state or the joint DL and UL TCI state in the TCI state pair associated with the highest (or lowest) TCI state ID in the indicated M>1 (or N>1) TCI state pair. TCI state or combined DL and UL TCI state.

[0203] For another example, the primary TCI state or TCI state pair may correspond to the mth (or nth) TCI state among the indicated M>1 (or N>1) TCI states or the TCI state with the mth (or nth) lowest (or highest) TCI state ID, or the separate DL TCI state or the joint DL and UL TCI state in the mth (or nth) TCI state pair, or the separate DL TCI state or the joint DL and UL TCI state in the TCI state pair associated with the mth (or nth) lowest (or highest) TCI state ID in the indicated M>1 (or N>1) TCI state pair, and the secondary TCI state or TCI state pair may correspond to the m'th (or n'th) TCI state among the indicated M>1 (or N>1) TCI states or the TCI state with the m'th (or n'th) highest (or lowest) TCI state ID, or the separate DL TCI state or the joint DL and UL TCI state in the m'th (or n'th) TCI state pair. TCI state, or a separate DL TCI state or a joint DL and UL TCI state in a TCI state pair associated with the m'th (or n'th) highest (or lowest) TCI state ID in the indicated M>1 (or N>1) TCI state pair, where m∈{1,...,M}, n∈{1,...,N}, m'∈{1,...,M} and n'∈{1,...,N}. In this example, the index m (or n) and the index m' (or n') may be determined according to at least one of the following: (1) fixed in the system specification, and (2) configured by the network, such as via high-layer RRC signaling or MAC CE command or DCI-based signaling.

[0204] For another example, the primary TCI state or TCI state pair may correspond to the first (or second) separate DL TCI state or the first (or second) joint DL and UL TCI state among the indicated M>1 (or N>1) TCI states, or a TCI state pair including the first (or second) separate DL TCI state or the first (or second) joint DL and UL TCI state among the indicated M>1 (or N>1) TCI states, and the secondary TCI state or TCI state pair may correspond to the second (or first) separate DL TCI state or the second (or first) joint DL and UL TCI state among the indicated M>1 (or N>1) TCI states, or a TCI state pair including the second (or first) separate DL TCI state or the second (or first) joint DL and UL TCI state among the indicated M>1 (or N>1) TCI state. In this example, for beam indication for downlink channels / signals, only the first individual DL TCI state, the second individual DL TCI state, the first joint DL and UL TCI state, or the second joint DL and UL TCI state (among the indicated M>1 or N>1 TCI states or TCI state pairs) is configured / indicated.

[0205] For another example, the UE may be configured with a list of K entity IDs by the network high layer. In the present disclosure, the entity ID may correspond to at least one of the following: a PCI value, a PCI index pointing to an entry / PCI in a PCI list configured for the UE high layer, a value of CORESETPoolIndex, a value of CORESETGroupIndex, a TRP ID, a TRP-specific high layer signaling index, a CORESET ID, a resource ID / index, a resource set ID / index, etc. In one example, the primary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with a first (or second) entity ID or a lowest (or second lowest / highest) entity ID or an entity ID associated with a serving cell PCI / PCI index (or a PCI / PCI index different from the serving cell PCI / PCI index), and the secondary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with a second (or first) entity ID or a second lowest / highest (or lowest) entity ID or an entity ID associated with a PCI / PCI index different from the serving cell PCI / PCI index (or a serving cell PCI / PCI index). In another example, the primary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with a first (or last) entity ID or a lowest (or highest) entity ID, and the secondary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with a last (or first) entity ID or a highest (or lowest) entity ID.

[0206] In another example, the primary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with the kth entity ID or the kth lowest (or highest) entity ID, and the secondary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with the k'th entity ID or the k'th lowest (or highest) entity ID, where k∈{1,...,K} and k'∈{1,...,K}. For this case, the index k or index k' may be determined according to at least one of the following: (1) fixed in the system specification, and (2) configured by the network, such as via high-level RRC signaling or MAC CE command or DCI-based signaling. In addition, K may be equal to M (or N).

[0207] For another example, the UE may be configured with a list of L PCIs through the network high layer. In one example, the primary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with the first (or second) PCI or the lowest (or second lowest / highest) PCI or the serving cell PCI (or a PCI different from the serving cell PCI), and the secondary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with the second (or first) PCI or the second lowest / highest (or lowest) PCI or a PCI different from the serving cell PCI (or the serving cell PCI). In another example, the primary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with the first (or last) PCI or the lowest (or highest) PCI, and the secondary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with the last (or first) PCI or the highest (or lowest) PCI.

[0208] In yet another example, the primary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with the lth PCI or the lth lowest (or highest) PCI, and the secondary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with the l'th PCI or the l'th lowest (or highest) PCI, where l∈{1,...,L} and l'∈{1,...,L}. Alternatively, the UE may determine a list of L PCI indices 0,...,L-1 or 1,...,L, where each PCI index points to an entry in the list of L PCIs. For this case, in one example, the primary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with the first (or second) PCI index or the lowest (or second lowest / highest) PCI index or the serving cell PCI index (or a PCI index different from the serving cell PCI index), and the secondary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with the second (or first) PCI index or the second lowest / highest (or lowest) PCI index or the PCI index different from the serving cell PCI index (or the serving cell PCI index); in another example, the primary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with the first (or last) PCI index or the last PCI index. A primary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with a low (or highest) PCI index, and a secondary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with a last (or first) PCI index or a highest (or lowest) PCI index; in another example, a primary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with a lth PCI index or a lth lowest (or highest) PCI index, and a secondary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with a l'th PCI index or a l'th lowest (or highest) PCI index, where l∈{1,…,L} and l'∈{1,…,L}.

[0209] For this case, index l or index l' may be determined according to at least one of the following: (1) fixed in the system specification, and (2) configured by the network, such as via high-layer RRC signaling or MAC CE command or DCI-based signaling. In addition, L may be equal to M (or N).

[0210] For another example, two CORESETPoolIndex values ​​(i.e., 0 and 1) may be provided to the UE in the PDCCH-Config for one or more CORESETs. The primary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with a CORESETPoolIndex value of 0 (or 1) or a CORESETPoolIndex value x, and the secondary TCI state or TCI state pair may correspond to a TCI state or TCI state pair associated with a CORESETPoolIndex value of 1 (or 0) or a CORESETPoolIndex value x', where x∈{0,1} and x'∈{0,1}. In this example, the value x or the value x' may be determined according to at least one of the following: (1) fixed in the system specification, and (2) configured by the network, such as via high-layer RRC signaling or MAC CE command or DCI-based signaling.

[0211] In another example, the UE may first receive M>1 (or N>1) TCI states or TCI state pairs (represented and ordered by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, ..., TCI state / TCI state pair #aM (or #aN)}) indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), as specified in the examples and corresponding sub-examples of the present disclosure, wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more CORESETs, in which one or more PDCCH candidates in one or more search space sets configured with the high-level parameter searchSpaceLinking are received. As described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. For example, if the bit field of the SRS resource set indicator is set to "11" or "10" or the index of the SRS resource set indicator is set to "3" or "2" according to Table 1 or the SRS resource set indicator field is not configured / does not exist, the order of the indicated M>1 (or N>1) TCI states or TCI state pairs will be reversed, and the UE will follow the reversed order of the M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more search spaces configured with the same high-level parameter searchSpaceLinking in one or more CORESETs associated with the reversed order of the M>1 (or N>1) TCI states or TCI state pairs. one or more PDCCH candidates in one or more search space sets, and if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1 or if the SRS resource set indicator field is not configured / does not exist, the UE shall follow the indicated M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same high-level parameter searchSpaceLinking in one or more CORESETs associated with the indicated M>1 (or N>1) TCI states or TCI state pairs.

[0212] If the indicated M>1 (or N>1) TCI states or TCI state pairs are (sorted as) {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, …, TCI state / TCI state pair #aM (or #aN)}, then when the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1 or the SRS resource set indicator field is not configured / does not exist, the (order-reversed) M>1 (or N>1) TCI states or TCI state pairs will become {TCI state / TCI state pair #b1, TCI state / TCI state pair #b2, …, TCI state / TCI state pair #bM (or #bN)}, where b1=aM (or aN), b2=a(M-1) or (a(N-1)), …, bM (or bN)=a1. For M=2 (or N=2), the UE may first receive two TCI states or TCI state pairs (represented and ordered by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2}) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1 or the SRS resource set indicator field is not configured / does not exist, the UE will follow the two TCI states or TCI state pairs {TCI state / TCI state pair #a2, TCI state / TCI state pair #a1} in reverse order to receive / monitor in one or more CORESETs associated with the TCI state or TCI state pair {TCI state / TCI state pair #a2, TCI state / TCI state pair #a1} in reverse order. One or more PDCCH candidates in one or more search space sets configured with the same high-level parameter searchSpaceLinking, and if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1 or if the SRS resource set indicator field is not configured / does not exist, the UE shall follow the indicated two TCI states or TCI state pairs {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2} to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same high-level parameter searchSpaceLinking in one or more CORESETs associated with the indicated TCI states or TCI state pairs {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2}.

[0213] In another example, the UE may first receive M>1 (or N>1) TCI states or TCI state pairs (represented by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, ..., TCI state / TCI state pair #aM (or #aN)}) indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more CORESETs, in which one or more PDCCH candidates in one or more search space sets configured with a high-level parameter searchSpaceLinking are received. As described above, the UE may also receive an SRS resource set indicator (e.g., in an "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation.For example, if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1, the UE will follow the M>1 (or N>1) TCI states or TCI state pairs sorted by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, ..., TCI state / TCI state #aM (or #aN)} (first sorting) to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same high-layer parameter searchSpaceLinking in one or more CORESETs associated with the M>1 (or N>1) TCI states or TCI state pairs sorted by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, ..., TCI state / TCI state #aM (or #aN)}. , and if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE will follow the M>1 (or N>1) TCI states or TCI state pairs sorted by {TCI state / TCI state pair #b1, TCI state / TCI state pair #b2, ..., TCI state / TCI state #bM (or #bN)} (second sorting) to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same high-level parameter searchSpaceLinking in one or more CORESETs associated with the M>1 (or N>1) TCI states or TCI state pairs sorted by {TCI state / TCI state pair #b1, TCI state / TCI state pair #b2, ..., TCI state / TCI state #bM (or #bN)}. The first ordering of TCI state / TCI state pairs {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, …, TCI state / TCI state #aM (or #aN)} or the second ordering of TCI state / TCI state pairs {TCI state / TCI state pair #b1, TCI state / TCI state pair #b2, …, TCI state / TCI state #bM (or #bN)} can be determined based on at least one of the following: (1) fixed in the system specification, and (2) configured by the network, for example via high-level RRC signaling or MAC CE command or DCI-based signaling.

[0214] For (1) and (2), b1 may be equal to aM (or aN), b2 may be equal to a(M-1) or (a(N-1)), …, bM (or bN) may be equal to a1. For M=2 (or N=2), the UE may first receive two TCI states or TCI state pairs (represented by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2}) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1, the UE will follow the two TCI states or TCI state pairs (represented by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2}) to receive / monitor in one or more CORESETs associated with the two TCI states or TCI state pairs (represented by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2}). Depending on the one or more PDCCH candidates in one or more search space sets configured with the same high-level parameter searchSpaceLinking, and if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE will follow the two TCI states or TCI state pairs sorted by {TCI state / TCI state pair #a2, TCI state / TCI state pair #a1} to receive / monitor the one or more PDCCH candidates in one or more search space sets configured with the same high-level parameter searchSpaceLinking in one or more CORESETs associated with the two TCI states or TCI state pairs {TCI state / TCI state pair #a2, TCI state / TCI state pair #a1}.

[0215] In yet another example, the UE may first receive M=1 (or N=1) TCI states or TCI state pairs indicated by a TCI state code point (or TCI field) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation). The UE may then receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more CORESETs, in which one or more PDCCH candidates in one or more search space sets configured with a higher layer parameter searchSpaceLinking are received.

[0216] For example, the UE will follow the latest indicated M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same high-level parameter searchSpaceLinking in one or more CORESETs associated with the latest indicated M>1 (or N>1) TCI states or TCI state pairs, i.e., multi-TRP PDCCH (repeated) reception.

[0217] For another example, the UE may receive an SRS resource set indicator (e.g., in an "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. For example, if the bit field of the SRS resource set indicator is set to "10" or "11" or the index of the SRS resource set indicator is set to "2" or "3" according to Table 1 or the SRS resource set indicator field is not configured / does not exist, the UE will follow the latest indicated M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same high-level parameter searchSpaceLinking in one or more CORESETs associated with the latest indicated M>1 (or N>1) TCI states or TCI state pairs, i.e., multi-TRP PDCCH (repeated) reception. If the bit field of the SRS resource set indicator is set to "00" or "01" or the index of the SRS resource set indicator is set to "0" or "1" according to Table 1, or the SRS resource set indicator field is not configured / does not exist, the UE will follow the previously indicated M=1 (or N=1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more CORESETs, i.e., single TRP PDCCH reception.

[0218] For another example, the UE may receive an SRS resource set indicator (e.g., in an "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. For example, if the bit field of the SRS resource set indicator is set to "00" or "01" or the index of the SRS resource set indicator is set to "0" or "1" according to Table 1 or the SRS resource set indicator field is not configured / does not exist, the UE will follow the previously indicated M=1 (or N=1) TCI state or TCI state pair to receive / monitor one or more PDCCH candidates (i.e., single TRP) in one or more CORESETs. PDCCH reception); if the bit field of the SRS resource set indicator is set to "10" or "11", or the index of the SRS resource set indicator is set to "2" or "3" according to Table 1, or the SRS resource set indicator field is not configured / does not exist, the UE will follow the latest indicated M>1 (or N>1) TCI state or TCI state pair to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same high-level parameter searchSpaceLinking in one or more CORESETs associated with the latest indicated M>1 (or N>1) TCI state or TCI state pair, that is, multiple TRPPDCCH (repeated) reception.

[0219] In another example, the UE may first receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more CORESETs, in which one or more PDCCH candidates in one or more search space sets configured with a higher-layer parameter searchSpaceLinking are received.

[0220] As described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. In the present disclosure, the SRS resource set indicator may also indicate one or more of the following: (1) single TRP PDCCH reception, (2) multi-TRP PDCCH (repeated) reception, (3) one or more orderings of the indicated TCI states or TCI state pairs for single TRP PDCCH reception or multi-TRP PDCCH (repeated) reception, and (4) one or more TCI states or TCI state pairs for single TRP PDCCH reception or multi-TRP PDCCH (repeated) reception.

[0221] For example, if the bit field of the SRS resource set indicator is set to "00" or "01" or the index of the SRS resource set indicator is set to "0" or "1" according to Table 1, the UE can use only the indicated M>1 (or N>1) TCI states or one of the TCI state pairs to receive / monitor one or more PDCCH candidates in one or more CORESETs, i.e., PDCCH reception in a single TRP system; if the bit field of the SRS resource set indicator is set to "01" or "00" or the index of the SRS resource set indicator is set to "1" or "0" according to Table 1, the UE can use one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same high-level parameter searchSpaceLinking in one or more CORESETs, i.e., PDCCH repeated reception in a multi-TRP system.

[0222] For example, if the bit field of the SRS resource set indicator is set to "10" or "11" or the index of the SRS resource set indicator is set to "2" or "3" according to Table 1, the UE will follow the order of the indicated M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same high-layer parameter searchSpaceLinking in one or more CORESETs associated with the indicated M>1 (or N>1) TCI states or TCI state pairs. , if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE shall follow the sequentially reversed M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same high-layer parameter searchSpaceLinking in one or more CORESETs associated with the sequentially reversed M>1 (or N>1) TCI states or TCI state pairs.

[0223] Alternatively, if the bit field of the SRS resource set indicator is set to "10" or "11" or the index of the SRS resource set indicator is set to "2" or "3" according to Table 1, the UE shall follow the first ordering of M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same higher layer parameter searchSpaceLinking in one or more CORESETs associated with the first ordering of M>1 (or N>1) TCI states or TCI state pairs. If the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE shall follow the second ordering of M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same high-level parameter searchSpaceLinking in one or more CORESETs associated with the second ordering of M>1 (or N>1) TCI states or TCI state pairs.

[0224] The first and second ordering of TCI states / TCI state pairs can be determined. Optionally, the bit field "00" or "01" of the 2-bit SRS resource set indicator or the index "0" or "1" in Table 1 can be used to indicate the ordering of M>1 (or N>1) TCI states or TCI state pairs for multi-TRP PDCCH (repetition) reception as described above, and the bit field "10" or "11" of the 2-bit SRS resource set indicator or the index "2" or "3" in Table 1 can be used to indicate single TRP PDCCH reception or multi-TRP PDCCH (repetition) reception as described above.

[0225] For another example, if the bit field of the SRS resource set indicator is set to "00" (or "01") or the index of the SRS resource set indicator is set to "0" (or "1") according to Table 1, the UE can use the primary TCI state or TCI state pair determined from the indicated M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more CORESETs (i.e., PDCCH reception in a single TRP system); if the bit field of the SRS resource set indicator is set to "01" (or "00") or the index of the SRS resource set indicator is set to "1" (or "0") according to Table 1, the UE can use the secondary TCI state or TCI state pair determined from the indicated M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more CORESETs (i.e., PDCCH reception in a single TRP system); the primary and secondary TCI states / TCI state pairs can be determined and configured.

[0226] For example, if the bit field of the SRS resource set indicator is set to "10" or "11" or the index of the SRS resource set indicator is set to "2" or "3" according to Table 1, the UE will follow the order of the indicated M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same high-layer parameter searchSpaceLinking in one or more CORESETs associated with the indicated M>1 (or N>1) TCI states or TCI state pairs. , if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "1" (or "0") according to Table 1, the UE shall follow the sequentially reversed M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same high-layer parameter searchSpaceLinking in one or more CORESETs associated with the sequentially reversed M>1 (or N>1) TCI states or TCI state pairs.

[0227] Alternatively, if the bit field of the SRS resource set indicator is set to "10" or "11" or the index of the SRS resource set indicator is set to "2" or "3" according to Table 1, the UE shall follow the first ordering of M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same higher layer parameter searchSpaceLinking in one or more CORESETs associated with the first ordering of M>1 (or N>1) TCI states or TCI state pairs. , if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE shall follow the second ordering of M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more search space sets configured with the same high-layer parameter searchSpaceLinking in one or more CORESETs associated with the second-ordered M>1 (or N>1) TCI states or TCI state pairs. The first and second orderings of the TCI states / TCI state pairs may be determined. Optionally, the bit field "00" or "01" of the 2-bit SRS resource set indicator or the index "0" or "1" in Table 1 can be used to indicate the ordering of M>1 (or N>1) TCI states or TCI state pairs for multi-TRP PDCCH (repeated) reception as described above, and the bit field "10" or "11" of the 2-bit SRS resource set indicator or the index "2" or "3" in Table 1 can be used to indicate the primary or secondary TCI state / TCI state pair for single TRP PDCCH reception as described above.

[0228] For another example, in addition to the configured 2-bit SRS resource set indicator, the UE may also receive a one-bit indicator in a DCI (e.g., DCI format 1_1 or 1_2 or DCI format 0_1 ​​or 0_2 with or without DL allocation). For this design example, a new / dedicated DCI field may be used / configured in the corresponding DCI format to indicate the one-bit indicator; alternatively, one or more existing DCI fields in the corresponding DCI format may be used / configured to indicate the one-bit indicator. When the 2-bit SRS resource set indicator indicates single TRP PDCCH reception, if the one-bit indicator is set to "0" (or "1"), the UE can use the primary TCI state or TCI state pair determined from the indicated M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more CORESETs; if the one-bit indicator is set to "1" (or "0"), the UE can use the secondary TCI state or TCI state pair determined from the indicated M>1 (or N>1) TCI states or TCI state pairs to receive / monitor one or more PDCCH candidates in one or more CORESETs; the primary and secondary TCI states / TCI state pairs can be determined / configured.

[0229] For another example, the SRS resource set indicator indicated in DCI format 0_1 ​​or 0_2 (e.g., in the "SRS resource set indicator" field) may correspond to a z-bit indicator (z>1, e.g., z=3) having 2^z states or bit fields (e.g., 8 states or bit fields for z=3). In this example, a first state or bit field of the z-bit indicator may indicate that single TRPPDCCH reception is enabled, a second state or bit field of the z-bit indicator may indicate that multi-TRP PDCCH (repetition) reception is enabled, a third state or bit field of the z-bit indicator may indicate that the UE may use a primary TCI state or TCI state pair for single TRPPDCCH reception, a fourth state or bit field of the z-bit indicator may indicate that the UE may use a secondary TCI state or TCI state pair for single TRP PDCCH reception, a fifth state or bit field of the z-bit indicator may indicate an ordering of M>1 (or N>1) TCI states or TCI state pairs for multi-TRP PDCCH (repetition) reception, and a sixth state or bit field of the z-bit indicator may indicate another ordering of M>1 (or N>1) TCI states or TCI state pairs for multi-TRP PDCCH (repetition) reception.

[0230] In yet another example, the UE may first receive M=1 (or N=1) TCI states or TCI state pairs indicated by a TCI state code point (or TCI field) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation). The UE may then receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more CORESETs, in which one or more PDCCH candidates in one or more search space sets configured with a higher layer parameter searchSpaceLinking are received.

[0231] As described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. The SRS resource set indicator may indicate one or more of the following: (1) single TRP PDCCH reception, (2) multi-TRP PDCCH (repetition) reception, (3) one or more orderings of the indicated TCI states or TCI state pairs for single TRP PDCCH reception or multi-TRP PDCCH (repetition) reception, and (4) one or more TCI states or TCI state pairs for single TRP PDCCH reception or multi-TRP PDCCH (repetition) reception. The SRS resource set indicator may be configured. For this example, if the SRS resource set indicator indicates that single TRP PDCCH reception is enabled, the UE may follow the previously indicated M=1 (or N=1) TCI state or TCI state pair to receive / monitor one or more PDCCH candidates in one or more CORESETs.

[0232] The UE may receive from the network one or more MAC CE subselection / activation commands to activate one or more sets of TCI states / TCI state IDs from one or more TCI state pools or one or more TCI state groups, wherein each set of activated / selected TCI states / TCI state IDs is used to map to a maximum of Nc≥1 (e.g., 8, 16, 32, or 64) TCI state code points in the DCI format. Here, the TCI state code points may be configured. In addition, the activated / selected one or more sets of TCI state code points may include / contain / include one or more of the following.

[0233] In one example, a first set of TCI state code points for single TRP PDCCH reception: the UE can receive M=1 (or N=1) TCI states or TCI state pairs indicated by TCI state code points from the first set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); the UE can use the indicated TCI states or TCI state pairs for single TRP PDCCH reception.

[0234] In another example, a second set of TCI state code points for single TRP PDCCH reception: the UE can receive M=1 (or N=1) TCI states or TCI state pairs indicated by TCI state code points from the second set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); the UE can use the indicated TCI state or TCI state pair as the main TCI state or TCI state pair for single TRP PDCCH reception.

[0235] In another example, a third set of TCI state code points for single TRP PDCCH reception: the UE can receive M=1 (or N=1) TCI states or TCI state pairs indicated by TCI state code points from the third set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); the UE can use the indicated TCI state or TCI state pair as a secondary TCI state or TCI state pair for single TRP PDCCH reception.

[0236] In another example, a fourth set of TCI state code points for multi-TRP PDCCH (repetition) reception: the UE may receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points from a fourth set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more CORESETs, in which one or more PDCCH candidates in one or more search space sets configured with a higher-layer parameter searchSpaceLinking are received.

[0237] In yet another example, a fifth set of TCI state code points for multi-TRP PDCCH (repetition) reception: the UE may receive, in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points from the fifth set of TCI state code points, wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more CORESETs in which one or more PDCCH candidates in one or more search space sets configured with a higher layer parameter searchSpaceLinking are received. The ordering of the indicated M>1 (or N>1) TCI states or TCI state pairs from the fifth set may correspond to the ordering of the M>1 (or N>1) TCI states or TCI state pairs (e.g., a first ordering).

[0238] In yet another example, a sixth set of TCI state code points for multi-TRP PDCCH (repetition) reception: the UE may receive, in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points from the sixth set of TCI state code points, wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more CORESETs in which one or more PDCCH candidates in one or more search space sets configured with a higher layer parameter searchSpaceLinking are received. The ordering of the indicated M>1 (or N>1) TCI states or TCI state pairs from the sixth set may correspond to the ordering of the M>1 (or N>1) TCI states or TCI state pairs (e.g., a second ordering).

[0239] The network may indicate to the UE which group of TCI state code points the indicated one or more TCI states or TCI state pairs are selected from. This indication may be made via high-level RRC signaling or MAC CE command or signaling based on dynamic DCI. For example, the UE may also receive a y-bit (y≥1) SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets. Here, the SRS resource set indicator is used to indicate a set of TCI state code points. Each state / bit field / index of the y-bit SRS resource set indicator (the y-bit SRS resource set indicator has a total of 2^y states or bit fields) may correspond to a set of TCI state code points (e.g., the first group, the second group, the third group, the fourth group, the fifth group, or the sixth group as described above). For example, if the UE receives a y-bit SRS resource set indicator in the "SRS resource set indicator" field in DCI format 0_1 ​​or 0_2 (e.g., set to a state or bit field value), the UE may determine a set of TCI state code points corresponding to the indicated state or bit field value of the y-bit SRS resource set indicator, from which the indicated one or more TCI states or TCI state pairs are selected. Based on the determined set of TCI state code points, the UE may perform / conduct corresponding single TRP PDCCH reception or multi-TRP PDCCH (repeated) reception, as described above.

[0240] In one embodiment, when the network configures / provides the UE with a high-level parameter repetitionScheme set to one of "fdmSchemeA", "fdmSchemeB" and "tdmSchemeA" or the network configures / provides the UE with a high-level parameter repetitionNumber in PDSCH-TimeDomainResourceAllocation, the UE may expect to receive PDSCH repetitions in overlapping or non-overlapping time or frequency domain resources.

[0241] When the higher-layer parameter repetitionScheme configured / provided by the network for the UE is set to "fdmSchemeA" and N>1 (or M>1) TCI states or TCI state pairs are indicated by one or more TCI state code points (or one or more TCI fields) in a DCI format (e.g., DCI format 1_1 or 1_2 with or without DL allocation), the UE may receive a single PDSCH transmission opportunity for a transport block (TB), where each indicated TCI state or TCI state pair is associated with a non-overlapping frequency domain resource allocation. The UE may assume that the precoding granularity is P in the frequency domain. BWP resource blocks, where P BWPCan be equal to a value in {2, 4, broadband}.

[0242] For N = 2 or M = 2, if P BWP is configured / determined as "Broadband", then the first PRBs (referred to as the first PDSCH transmission in this disclosure) are allocated to the first indicated TCI state / TCI state pair, and the remaining PRBs (referred to as the second PDSCH transmission in this disclosure) are allocated to the second indicated TCI state / TCI state pair, where n PRB is the total number of PRBs allocated to the UE; if P BWP is configured / determined to be a value in {2, 4}, then the even-numbered precoded resource block groups (PRGs) within the allocated frequency-domain resources (referred to as the first PDSCH transmission in the present disclosure) are allocated to the first indicated TCI state / TCI state pair, and the odd-numbered PRGs within the allocated frequency-domain resources (referred to as the second PDSCH transmission in the present disclosure) are allocated to the second indicated TCI state / TCI state pair, where the PRGs are numbered consecutively in ascending order, where the first PRG index is equal to 0. In the present disclosure, the first (or second) indicated TCI state / TCI state pair may correspond to any one of the indicated M=2 (or N=2) TCI states / TCI state pairs.

[0243] When the high-level parameter repetitionScheme configured / provided by the network to the UE is set to "fdmSchemeB" and N>1 (or M>1) TCI states or TCI state pairs are indicated by one or more TCI state code points (or one or more TCI fields) in a DCI format (e.g., DCI format 1_1 or 1_2 with or without DL allocation), the UE can receive two PDSCH transmission opportunities for the same TB, where each indicated TCI state or TCI state pair is associated with a PDSCH transmission opportunity with non-overlapping frequency domain resource allocation relative to other PDSCH transmission opportunities.

[0244] The UE may assume that the precoding granularity is P in the frequency domain. BWP resource blocks, where P BWP Can be equal to a value in {2, 4, broadband}. For N = 2 or M = 2, if P BWP is configured / determined as "Broadband", then the first PRBs (referred to as the first PDSCH transmission in this disclosure) are allocated to the first indicated TCI state / TCI state pair, and the remaining PRBs (referred to as the second PDSCH transmission in this disclosure) are allocated to the second indicated TCI state / TCI state pair, where n PRBis the total number of PRBs allocated to the UE; if P BWP is configured / determined to be a value in {2, 4}, then the even-numbered precoded resource block groups (PRGs) within the allocated frequency-domain resources (referred to as the first PDSCH transmission in the present disclosure) are allocated to the first indicated TCI state / TCI state pair, and the odd-numbered PRGs within the allocated frequency-domain resources (referred to as the second PDSCH transmission in the present disclosure) are allocated to the second indicated TCI state / TCI state pair, where the PRGs are numbered consecutively in ascending order, where the first PRG index is equal to 0. In the present disclosure, the first (or second) indicated TCI state / TCI state pair may correspond to any one of the indicated M=2 (or N=2) TCI states / TCI state pairs.

[0245] When the high-level parameter repetitionScheme configured / provided by the network for the UE is set to "tdmSchemeA" and N>1 (or M>1) TCI states or TCI state pairs are indicated by one or more TCI state code points (or one or more TCI fields) in a DCI format (e.g., DCI format 1_1 or 1_2 with or without DL allocation), the UE can receive two PDSCH transmission opportunities for a TB, wherein each indicated TCI state or TCI state pair is associated with a PDSCH transmission opportunity with non-overlapping time domain resource allocation relative to other PDSCH transmission opportunities, and two PDSCH transmission opportunities can be received within a given time slot. For M=2 or N=2, the first indicated TCI state / TCI state pair can be applied to the first PDSCH transmission opportunity; the second indicated TCI state / TCI state pair can be applied to the second PDSCH transmission opportunity, and the second PDSCH transmission opportunity should have the same number of symbols as the first PDSCH transmission opportunity. In the present disclosure, the first (or second) indicated TCI state / TCI state pair may correspond to any one of the indicated M=2 (or N=2) TCI states / TCI state pairs.

[0246] When the high-level parameter repetitionNumber in PDSCH-TimeDomainResourceAllocation is configured / provided by the network for the UE, and N>1 (or M>1) TCI states or TCI state pairs are indicated by one or more TCI state code points (or one or more TCI fields) in the DCI format (e.g., DCI format 1_1 or 1_2 with or without DL allocation), the UE can expect to receive multiple time slot-level PDSCH transmission opportunities for the same TB, where the indicated M>1 (or N>1) TCI states / TCI state pairs are used across multiple PDSCH transmission opportunities in repetitionNumber consecutive time slots. For N=2 or M=2, when the value indicated by repetitionNumber in PDSCH-TimeDomainResourceAllocation is equal to 2, the first indicated TCI state is applied to the first PDSCH transmission opportunity; the second indicated TCI state / TCI state pair is applied to the second PDSCH transmission opportunity. The UE may also be configured to enable cyclicMapping or sequenceMapping when the repetitionNumber value in PDSCH-TimeDomainResourceAllocation is greater than 2. When cyclicMapping is enabled, the first indicated TCI state / TCI state pair and the second indicated TCI state / TCI state pair are applied to the first PDSCH transmission timing and the second PDSCH transmission timing, respectively, and the same TCI mapping mode continues to be applied to the remaining PDSCH transmission timings.

[0247] When sequentialMapping is enabled, the first indicated TCI state / TCI state pair is applied to the first and second PDSCH transmission opportunities, and the second indicated TCI state / TCI state pair is applied to the third and fourth PDSCH transmission opportunities, and the same TCI mapping mode continues to be applied to the remaining PDSCH transmission opportunities. In the present disclosure, the first (or second) indicated TCI state / TCI state pair can correspond to any one of the indicated M=2 (or N=2) TCI state / TCI state pairs.

[0248] In a multi-TRP system, when the UE is not configured / provided by the network high-level parameter repetitionScheme or repetitionNumber in PDSCH-TimeDomainResourceAllocation and the network indicates M=2 (or N=2) TCI states or TCI state pairs to the UE through one or more TCI state code points (or one or more TCI fields) in a DCI format (e.g., DCI format 1_1 or 1_2 with or without DL allocation) and indicates DM-RS ports within two code division multiplexing (CDM) groups to the UE in the DCI field "antenna port", the first indicated TCI state / TCI state pair may correspond to the CDM group of the first antenna port indicated by the antenna port indication table (referred to as the first PDSCH transmission in the present disclosure), and the second TCI state / TCI state pair may correspond to another CDM group (referred to as the second PDSCH transmission in the present disclosure). In the present disclosure, the first (or second) indicated TCI state / TCI state pair may correspond to any one of the indicated M=2 (or N=2) TCI states / TCI state pairs.

[0249] As mentioned, the UE may receive in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation) M>1 (or N>1) TCI states or M>1 (or N>1) TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in the corresponding DCI. One or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PDSCH transmissions / transmission opportunities. In addition, as described above, the UE may also receive an SRS resource set indicator (e.g., in an "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. The SRS resource set indicator may indicate at least one of the following: (1) switching between single TRP PDSCH reception and multiple TRPPDSCH (repeated) reception, (2) one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs for single TRP PDSCH reception, and (3) switching the order of the indicated M>1 (or N>1) TCI states or TCI state pairs.

[0250] In one example, the UE may first receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), as specified in the examples and corresponding sub-examples of the present disclosure, wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PDSCH transmission / transmission opportunities, as described above for multi-TRP PDSCH (repeated) reception.

[0251] As described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. For example, if the bit field of the SRS resource set indicator is set to "00" or "01" or the index of the SRS resource set indicator is set to "0" or "1" according to Table 1, or the SRS resource set indicator field is not configured / does not exist, the UE can use only one of the indicated M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCHs or one or more layers of PDSCHs, i.e., PDSCH reception in a single TRP system; if the bit field of the SRS resource set indicator is set to "10" or "11" or the index of the SRS resource set indicator is set to "2" or "3" according to Table 1, or the SRS resource set indicator field is not configured / does not exist, the UE can use one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs to receive PDSCH transmission / transmission timing, i.e., PDCCH (repeated) reception in a multi-TRP system. More specifically, if the bit field of the SRS resource set indicator is set to "00" or "01" or the index of the SRS resource set indicator is set to "0" or "1" according to Table 1, or the SRS resource set indicator field is not configured / does not exist (i.e., for PDSCH reception in a single TRP system).

[0252] For example, the UE may use the first TCI state among the indicated M>1 (or N>1) TCI states or the TCI state with the lowest (or highest) TCI state ID or a separate DL TCI state or a joint DL and UL TCI state in the first TCI state pair or a separate DL TCI state or a joint DL and UL TCI state in a TCI state pair associated with the lowest (or highest) TCI state ID among the indicated M>1 (or N>1) TCI state pairs to receive one or more PDSCHs or one or more layers of PDSCHs.

[0253] For another example, the UE may use a second TCI state among the indicated M>1 (or N>1) TCI states or a TCI state with a second lowest (or second highest) TCI state ID or a separate DL TCI state or a joint DL and UL TCI state in a second TCI state pair, or a separate DL TCI state or a joint DL and UL TCI state in a TCI state pair associated with the second lowest (or second highest) TCI state ID in the indicated M>1 (or N>1) TCI state pair to receive one or more PDSCHs or one or more layers of PDSCHs.

[0254] For another example, the UE may use the last TCI state among the indicated M>1 (or N>1) TCI states or the TCI state with the highest (or lowest) TCI state ID or the separate DL TCI state or the joint DL and UL TCI state in the last TCI state pair or the separate DL TCI state or the joint DL and UL TCI state in the TCI state pair associated with the highest (or lowest) TCI state ID among the indicated M>1 (or N>1) TCI state pairs to receive one or more PDSCHs or one or more layers of PDSCHs.

[0255] For another example, the UE may use the mth (or nth) TCI state among the indicated M>1 (or N>1) TCI states or the TCI state with the mth (or nth) lowest (or highest) TCI state ID or the separate DL TCI state or the joint DL and UL TCI state in the mth (or nth) TCI state pair or the separate DL TCI state or the joint DL and UL TCI state in the TCI state pair associated with the mth (or nth) lowest (or highest) TCI state ID in the indicated M>1 (or N>1) TCI state pair to receive one or more PDSCHs or one or more layers of PDSCHs, where m∈{1, ..., M} and n∈{1, ..., N}. In this example, the index m (or n) may be determined according to at least one of the following: (1) fixed in the system specification, and (2) configured by the network, such as via high-layer RRC signaling or MAC CE command or DCI-based signaling.

[0256] For another example, the UE may use a separate DL TCI state or a joint DL and UL TCI state in the indicated M>1 (or N>1) TCI states to receive one or more PDSCHs or one or more layers of PDSCHs. In this example, only one of the indicated M>1 (or N>1) TCI states may correspond to a separate DL TCI state or a joint DL and UL TCI state.

[0257] For another example, the UE may be configured with a list of K entity IDs by the network high layer. In the present disclosure, the entity ID may correspond to at least one of the following: a PCI value, a PCI index pointing to an entry / PCI in a PCI list configured by the high layer to the UE, a value of CORESETPoolIndex, a value of CORESETGroupIndex, a TRP ID, a TRP-specific high-layer signaling index, a CORESET ID, a resource ID / index, a resource set ID / index, etc. The UE may use a TCI state or TCI state pair associated with the first entity ID or the second entity ID or the last entity ID or the lowest entity ID or the highest entity ID or the second lowest (or second highest) entity ID or an entity ID associated with a serving cell PCI / PCI index or an entity ID associated with a PCI / PCI index different from the serving cell PCI / PCI index or the kth entity ID in the list of K entity IDs or the kth lowest (or highest) entity ID to receive one or more PDSCHs or one or more layers of PDSCHs, where k∈{1,…,K}. In this example, the index k may be determined according to at least one of the following: (1) fixed in the system specification, and (2) configured by the network, such as via high-layer RRC signaling or MAC CE command or DCI-based signaling. In addition, K may be equal to M (or N).

[0258] For another example, the UE may be configured with a list of L PCIs through the network high layer. The UE may use the TCI state or TCI state pair associated with the first PCI or the second PCI or the last PCI or the lowest PCI or the highest PCI or the second lowest (or second highest) PCI or the serving cell PCI or the PCI different from the serving cell PCI or the lth PCI or the lth lowest (or highest) PCI in the list of L PCIs to receive one or more PDSCHs or one or more layers of PDSCHs, where l∈{1,…,L}. Alternatively, the UE may determine a list of L PCI indices 0,…,L-1 or 1,…,L, where each PCI index points to an entry in the list of L PCIs. For this case, the UE may use a TCI state or TCI state pair associated with the first PCI index or the second PCI index or the last PCI index or the lowest PCI index or the highest PCI index or the second lowest (or second highest) PCI index or the serving cell PCI index or a PCI index different from the serving cell PCI index or the lth PCI index or the lth lowest (or highest) PCI index in a list of L PCI indices to receive one or more PDSCHs or one or more layers of PDSCHs, where l∈{1,…,L}. In this example, the index l may be determined according to at least one of the following: (1) fixed in the system specification, and (2) configured by the network, such as via high-layer RRC signaling or MAC CE command or DCI-based signaling. In addition, L may be equal to M (or N).

[0259] For another example, two CORESETPoolIndex values ​​(i.e., 0 and 1) may be provided to the UE in the PDCCH-Config for one or more CORESETs. The UE may use a TCI state or TCI state pair associated with a CORESETPoolIndex value of 0 or a CORESETPoolIndex value of 1 or a CORESETPoolIndex value of x to receive one or more PDSCHs or one or more layers of a PDSCH, where x∈{0,1}. In this example, the value x may be determined according to at least one of: (1) fixed in the system specification, and (2) configured by the network, such as via high-layer RRC signaling or MAC CE command or DCI-based signaling.

[0260] In another example, the UE may first receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PDSCH transmission / transmission opportunities, as described above for multi-TRP PDSCH (repeated) reception.

[0261] As described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. If the bit field of the SRS resource set indicator is set to "00" (or "01") or the index of the SRS resource set indicator is set to "0" (or "1") according to Table 1, the UE can use one of the indicated M>1 (or N>1) TCI states or TCI state pairs (primary TCI state or TCI state pair) to receive one or more PDSCHs or one or more layers of PDSCHs, i.e., PDSCH reception in a single TRP system; if the bit field of the SRS resource set indicator is set to "01" (or "00") or the index of the SRS resource set indicator is set to "1" (or "0"), the UE can use the other one of the indicated M>1 (or N>1) TCI states or TCI state pairs (secondary TCI state or TCI state pair) to receive one or more PDSCHs or one or more layers of PDSCHs, i.e., PDSCH reception in a single TRP system. Various design examples for determining the primary TCI state or TCI state pair or the secondary TCI state or TCI state pair.

[0262] In another example, the UE may first receive M>1 (or N>1) TCI states or TCI state pairs (represented and ordered by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, …, TCI state / TCI state pair #aM (or #aN)}) indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PDSCH transmission / PDSCH transmission opportunities, as described above for multi-TRP PDSCH (repeated) reception.

[0263] As described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. For example, if the bit field of the SRS resource set indicator is set to "11" or "10" or the index of the SRS resource set indicator is set to "3" or "2" according to Table 1 or the SRS resource set indicator field is not configured / does not exist, the order of the indicated M>1 (or N>1) TCI states or TCI state pairs will be reversed, and the UE will follow the reversed order of the M>1 (or N>1) TCI states or TCI state pairs to receive one or more P associated with the reversed order of the M>1 (or N>1) TCI states or TCI state pairs. DSCH transmission / PDSCH transmission timing, and if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1, or if the SRS resource set indicator field is not configured / does not exist, the UE will follow the indicated M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCH transmission / PDSCH transmission timing associated with the indicated M>1 (or N>1) TCI states or TCI state pairs.

[0264] If the indicated M>1 (or N>1) TCI states or TCI state pairs are (sorted as) {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, …, TCI state / TCI state pair #aM (or #aN)}, then when the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1 or the SRS resource set indicator field is not configured / does not exist, the (order-reversed) M>1 (or N>1) TCI states or TCI state pairs will become {TCI state / TCI state pair #b1, TCI state / TCI state pair #b2, …, TCI state / TCI state pair #bM (or #bN)}, where b1=aM (or aN), b2=a(M-1) or (a(N-1)), …, bM (or bN)=a1.

[0265] For M=2 (or N=2), the UE may first receive two TCI states or TCI state pairs (represented and ordered by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2}) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1 or the SRS resource set indicator field is not configured / does not exist, the UE will follow the two TCI states or TCI state pairs {TCI state / TCI state pair #a2, TCI state / TCI state pair #a1} in reverse order to receive one or more associated with the TCI state or TCI state pair {TCI state / TCI state pair #a2, TCI state / TCI state pair #a1} in reverse order. PDSCH transmission / PDSCH transmission timing (for example, the first and second PDSCH transmissions or the first and second PDSCH transmission timings as described above), and if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") or if the SRS resource set indicator field is not configured / does not exist, the UE will follow the indicated two TCI states or TCI state pairs {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2} to receive one or more PDSCH transmission / PDSCH transmission timings (for example, the first and second PDSCH transmissions or the first and second PDSCH transmission timings as described above) associated with the indicated TCI state or TCI state pair {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2}.

[0266] In another example, the UE may first receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation) (represented by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, …, TCI state / TCI state pair #aM (or #aN)}), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PDSCH transmission / PDSCH transmission opportunities, as described above for multi-TRP PDSCH (repeated) reception.

[0267] As described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. For example, if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1, the UE will follow the M>1 (or N>1) TCI states or TCI state pairs sorted by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, ..., TCI state / TCI state #aM (or #aN)} (first sorting) to receive one or more PDSCH transmission / transmission timings associated with the M>1 (or N>1) TCI states or TCI state pairs sorted by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, ..., TCI state / TCI state #aM (or #aN)}. , and if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE will follow the M>1 (or N>1) TCI states or TCI state pairs sorted by {TCI state / TCI state pair #b1, TCI state / TCI state pair #b2, ..., TCI state / TCI state #bM (or #bN)} (second sorting) to receive one or more PDSCH transmissions / transmission opportunities associated with the M>1 (or N>1) TCI states or TCI state pairs sorted by {TCI state / TCI state pair #b1, TCI state / TCI state pair #b2, ..., TCI state / TCI state #bM (or #bN)}. The first ordering of TCI state / TCI state pairs {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, …, TCI state / TCI state #aM (or #aN)} or the second ordering of TCI state / TCI state pairs {TCI state / TCI state pair #b1, TCI state / TCI state pair #b2, …, TCI state / TCI state #bM (or #bN)} can be determined based on at least one of the following: (1) fixed in the system specification, and (2) configured by the network, for example via high-level RRC signaling or MACCE command or DCI-based signaling.

[0268] For (1) and (2), b1 may be equal to aM (or aN), b2 may be equal to a(M-1) or (a(N-1)), …, bM (or bN) may be equal to a1. For M=2 (or N=2), the UE may first receive two TCI states or TCI state pairs (represented by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2}) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1, the UE will follow the two TCI states or TCI state pairs sorted by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2} to receive one associated with the two TCI states or TCI state pairs sorted by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2}. or multiple PDSCH transmissions / transmission opportunities (for example, the first and second PDSCH transmissions or the first and second PDSCH transmission opportunities as described above), and if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE will follow the two TCI states or TCI state pairs sorted by {TCI state / TCI state pair #a2, TCI state / TCI state pair #a1} to receive one or more PDSCH transmissions / transmission opportunities associated with the two TCI states or TCI state pairs {TCI state / TCI state pair #a2, TCI state / TCI state pair #a1} (for example, the first and second PDSCH transmissions or the first and second PDSCH transmission opportunities as described above).

[0269] In yet another example, the UE may first receive M=1 (or N=1) TCI states or TCI state pairs indicated by TCI state code points (or TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), as specified in the examples and corresponding sub-examples of the present disclosure. The UE may then receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PDSCH transmissions / transmission opportunities, as described above for multi-TRP PDSCH (repeated) reception.

[0270] For example, the UE will follow the latest indicated M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCH transmission / transmission opportunities associated with the latest indicated M>1 (or N>1) TCI states or TCI state pairs, i.e., multiple TRPPDSCH (repeated) reception.

[0271] For another example, as described above, the UE may receive an SRS resource set indicator (e.g., in an "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. For example, if the bit field of the SRS resource set indicator is set to "10" or "11" or the index of the SRS resource set indicator is set to "2" or "3" according to Table 1 or the SRS resource set indicator field is not configured / does not exist, the UE will follow the latest indicated M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCH transmissions / PDSCH transmission opportunities associated with the latest indicated M>1 (or N>1) TCI states or TCI state pairs, i.e., multi-TRP PDSCH (repeated) reception. If the bit field of the SRS resource set indicator is set to "00" or "01" or the index of the SRS resource set indicator is set to "0" or "1" according to Table 1, or the SRS resource set indicator field is not configured / does not exist, the UE will follow the previously indicated M=1 (or N=1) TCI states or TCI state pairs to receive one or more PDSCHs or one or more layers of PDSCHs, i.e., single TRP PDSCH reception.

[0272] For another example, as described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. For example, if the bit field of the SRS resource set indicator is set to "00" or "01" or the index of the SRS resource set indicator is set to "0" or "1" according to Table 1, or the SRS resource set indicator field is not configured / does not exist, the UE will follow the previously indicated M=1 (or N=1) TCI state or TCI state pair to receive one or more PDSCHs or one or more layers of PDSCHs, i.e., single TRP PDSCH reception; if the bit field of the SRS resource set indicator is set to "10" or "11", or the index of the SRS resource set indicator is set to "2" or "3" according to Table 1, or the SRS resource set indicator field is not configured / does not exist, the UE will follow the latest indicated M>1 (or N>1) TCI state or TCI state pair to receive one or more PDSCH transmissions / transmission opportunities associated with the latest indicated M>1 (or N>1) TCI state or TCI state pair, i.e., multi-TRP PDSCH (repeated) reception.

[0273] In another example, the UE may first receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PDSCH transmission / transmission opportunities, as described above for multi-TRP PDSCH (repeated) reception.

[0274] As described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. In the present disclosure, the SRS resource set indicator may also indicate one or more of the following: (1) single TRP PDSCH reception, (2) multi-TRP PDSCH (repeated) reception, (3) one or more orderings of the indicated TCI states or TCI state pairs for single TRP PDSCH reception or multi-TRP PDSCH (repeated) reception, and (4) one or more TCI states or TCI state pairs for single TRP PDSCH reception or multi-TRP PDSCH (repeated) reception.

[0275] For example, if the bit field of the SRS resource set indicator is set to "00" or "01" or the index of the SRS resource set indicator is set to "0" or "1" according to Table 1, the UE can use only one of the indicated M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCHs or one or more layers of PDSCHs, i.e., PDSCH reception in a single TRP system; if the bit field of the SRS resource set indicator is set to "01" or "00" or the index of the SRS resource set indicator is set to "1" or "0" according to Table 1, the UE can use one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCH transmissions / transmission opportunities as described above, i.e., PDSCH (repeated) reception in a multi-TRP system.

[0276] If the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1, the UE will follow the indicated ordering of the M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCH transmission / transmission opportunities associated with the indicated M>1 (or N>1) TCI states or TCI state pairs (according to the example in the present disclosure); if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE will follow the reversed order of the M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCH transmission / transmission opportunities associated with the reversed order of the M>1 (or N>1) TCI states or TCI state pairs (according to the example in the present disclosure).

[0277] Alternatively, if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1, the UE will follow the first ordering of M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCH transmission / transmission timings associated with the first ordering of M>1 (or N>1) TCI states or TCI state pairs; if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE will follow the second ordering of M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCH transmission / transmission timings associated with the second ordering of M>1 (or N>1) TCI states or TCI state pairs.

[0278] The first and second ordering of TCI states / TCI state pairs can be determined. Optionally, the bit field "00" or "01" or the index "0" or "1" of the 2-bit SRS resource set indicator can be used to indicate the ordering of M>1 (or N>1) TCI states or TCI state pairs for multi-TRP PDSCH (repetition) reception as described above, and the bit field "10" or "11" or the index "2" or "3" of the 2-bit SRS resource set indicator can be used to indicate single TRP PDSCH reception or multi-TRP PDSCH (repetition) reception as described above.

[0279] For another example, if the bit field of the SRS resource set indicator is set to "00" (or "01") or the index of the SRS resource set indicator is set to "0" (or "1") according to Table 1, the UE can use the primary TCI state or TCI state pair determined from the indicated M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCHs or one or more layers of PDSCHs, i.e., PDSCH reception in a single TRP system; if the bit field of the SRS resource set indicator is set to "10" (or "00") or the index of the SRS resource set indicator is set to "1" (or "0") according to Table 1, the UE can use the secondary TCI state or TCI state pair determined from the indicated M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCHs or one or more layers of PDSCHs, i.e., PDSCH reception in a single TRP system; the primary and secondary TCI states / TCI state pairs can be determined / configured.

[0280] If the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1, the UE will follow the indicated ordering of the M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCH transmission / transmission opportunities associated with the indicated M>1 (or N>1) TCI states or TCI state pairs (according to the example in the present disclosure); if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE will follow the reversed order of the M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCH transmission / transmission opportunities associated with the reversed order of the M>1 (or N>1) TCI states or TCI state pairs (according to the example in the present disclosure).

[0281] Alternatively, if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1, the UE will follow the first ordering of M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCH transmissions / transmission opportunities associated with the first-ordered M>1 (or N>1) TCI states or TCI state pairs; if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE will follow the second ordering of M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCH transmissions / transmission opportunities associated with the second-ordered M>1 (or N>1) TCI states or TCI state pairs. The first and second orderings of TCI states / TCI state pairs can be determined. Optionally, a bit field of "00" or "01" or an index of "0" or "1" of a 2-bit SRS resource set indicator can be used to indicate the ordering of M>1 (or N>1) TCI states or TCI state pairs for multi-TRP PDSCH (repeated) reception as described above, and a bit field of "10" or "11" or an index of "2" or "3" of a 2-bit SRS resource set indicator can be used to indicate a primary or secondary TCI state / TCI state pair for single TRP PDSCH reception as described above.

[0282] For another example, in addition to the 2-bit SRS resource set indicator configured according to the example, the UE may also receive a one-bit indicator in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation). For this design example, a new / dedicated DCI field may be used / configured in the corresponding DCI format to indicate the one-bit indicator; alternatively, one or more existing DCI fields in the corresponding DCI format may be used / configured to indicate the one-bit indicator. When the 2-bit SRS resource set indicator indicates single TRP PDSCH reception, if the one-bit indicator is set to "0" (or "1"), the UE can use the primary TCI state or TCI state pair determined from the indicated M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCHs or one or more layers of PDSCHs; if the one-bit indicator is set to "1" (or "0"), the UE can use the secondary TCI state or TCI state pair determined from the indicated M>1 (or N>1) TCI states or TCI state pairs to receive one or more PDSCHs or one or more layers of PDSCHs; the primary TCI state and secondary TCI state / TCI state pair can be determined / configured.

[0283] For another example, the SRS resource set indicator indicated in DCI format 0_1 ​​or 0_2 (e.g., in the "SRS resource set indicator" field) may correspond to a z-bit indicator (z>1, e.g., z=3) having 2^z states (e.g., 8 states or bit fields for z=3). In this example, according to the example and corresponding sub-example of the present disclosure, the first state or bit field of the z-bit indicator may indicate that single TRP PDSCH reception is enabled, the second state or bit field of the z-bit indicator may indicate that multi-TRP PDSCH (repetition) reception is enabled, the third state or bit field of the z-bit indicator may indicate that the UE can use the primary TCI state or TCI state pair for single TRP PDSCH reception, the fourth state or bit field of the z-bit indicator may indicate that the UE can use the secondary TCI state or TCI state pair for single TRP PDSCH reception, the fifth state or bit field of the z-bit indicator may indicate the ordering of M>1 (or N>1) TCI states or TCI state pairs for multi-TRP PDSCH (repetition) reception, and the sixth state or bit field of the z-bit indicator may indicate another ordering of M>1 (or N>1) TCI states or TCI state pairs for multi-TRP PDSCH (repetition) reception.

[0284] In yet another example, the UE may first receive M=1 (or N=1) TCI states or TCI state pairs indicated by a TCI state code point (or TCI field) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation). The UE may then receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PDSCH transmissions / PDSCH transmission opportunities, as described above for multi-TRPPDSCH (repeated) reception.

[0285] As described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. The SRS resource set indicator may indicate one or more of the following: (1) single TRP PDSCH reception, (2) multi-TRP PDSCH (repetition) reception, (3) one or more orderings of the indicated TCI states or TCI state pairs for single TRP PDSCH reception or multi-TRP PDSCH (repetition) reception, and (4) one or more TCI states or TCI state pairs for single TRP PDSCH reception or multi-TRP PDSCH (repetition) reception. The SRS resource set indicator may be configured. For this example, if the SRS resource set indicator indicates that single TRP PDSCH reception is enabled, the UE may follow the previously indicated M=1 (or N=1) TCI state or TCI state pair to receive one or more PDSCHs or one or more layers of PDSCHs.

[0286] The UE may receive from the network one or more MAC CE subselection / activation commands to activate one or more sets of TCI states / TCI state IDs from one or more TCI state pools or one or more TCI state groups, wherein each set of activated / selected TCI states / TCI state IDs is used to map to a maximum of Nc≥1 (e.g., 8, 16, 32, or 64) TCI state code points in the DCI format. Here, the TCI state code points may be configured. In addition, the activated / selected one or more sets of TCI state code points may include / contain / include one or more of the following examples.

[0287] In one example, a first set of TCI state code points for single TRP PDSCH reception: the UE can receive M=1 (or N=1) TCI states or TCI state pairs indicated by TCI state code points from the first set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); the UE can use the indicated TCI states or TCI state pairs for single TRP PDSCH reception.

[0288] In another example, a second set of TCI state code points for single TRP PDSCH reception: the UE can receive M=1 (or N=1) TCI states or TCI state pairs indicated by TCI state code points from the second set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); the UE can use the indicated TCI state or TCI state pair as the main TCI state or TCI state pair for single TRP PDSCH reception.

[0289] In another example, a third set of TCI state code points for single TRP PDSCH reception: the UE can receive M=1 (or N=1) TCI states or TCI state pairs indicated by TCI state code points from the third set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); the UE can use the indicated TCI state or TCI state pair as a secondary TCI state or TCI state pair for single TRP PDSCH reception.

[0290] In another example, a fourth set of TCI state code points for multi-TRP PDSCH (repeated) reception: the UE can receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points from the fourth set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs can be associated with / mapped to one or more PDSCH transmission / transmission opportunities, as described above for multi-TRP PDSCH (repeated) reception.

[0291] In yet another example, a fifth set of TCI state code points for multi-TRP PDSCH (repeated) reception: The UE may receive, in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points from the fifth set of TCI state code points, wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PDSCH transmissions / transmission opportunities, as described above for multi-TRP PDSCH (repeated) reception. The ordering of the indicated M>1 (or N>1) TCI states or TCI state pairs from the fifth set may correspond to the ordering of the M>1 (or N>1) TCI states or TCI state pairs (e.g., a first ordering).

[0292] In yet another example, a sixth set of TCI state code points for multi-TRP PDSCH (repeated) reception: The UE may receive, in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points from the sixth set of TCI state code points, wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PDSCH transmissions / transmission opportunities, as described above for multi-TRP PDSCH (repeated) reception. The ordering of the indicated M>1 (or N>1) TCI states or TCI state pairs from the sixth set may correspond to the ordering of the M>1 (or N>1) TCI states or TCI state pairs (e.g., a second ordering).

[0293] The network may indicate to the UE which group of TCI state code points the indicated one or more TCI states or TCI state pairs are selected from. This indication may be made via high-level RRC signaling or MAC CE command or signaling based on dynamic DCI. For example, the UE may also receive a y-bit (y≥1) SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets. Here, the SRS resource set indicator is used to indicate a set of TCI state code points. Each state / bit field / index of the y-bit SRS resource set indicator (the y-bit SRS resource set indicator has a total of 2^y states or bit fields) may correspond to a set of TCI state code points (e.g., the first group, the second group, the third group, the fourth group, the fifth group, or the sixth group as described above).

[0294] For example, if the UE receives a y-bit SRS resource set indicator in the "SRS resource set indicator" field in DCI format 0_1 ​​or 0_2 (e.g., set to a state or bit field value), the UE may determine a set of TCI state code points corresponding to the indicated state or bit field value of the y-bit SRS resource set indicator, from which the indicated one or more TCI states or TCI state pairs are selected. Based on the determined set of TCI state code points, the UE may perform / conduct corresponding single TRP PDSCH reception or multi-TRP PDSCH (repeated) reception, as described above.

[0295] In one embodiment of the present disclosure, the number of time slots, denoted by Npucch, may be configured for the UE for PUCCH transmission repetition. Two SRS resource sets may also be configured for the UE (e.g., provided by srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2), where the high-layer parameter usage in the SRS-ResourceSet is set to "codebook" or "noncodebook" for PUSCH transmission repetition. As previously described, the UE may receive M>1 (or N>1) TCI states or M>1 (or N>1) TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in the corresponding DCI in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation). One or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PUCCH transmission repetitions or one or more PUSCH transmission repetitions.

[0296] When the UE is configured with a number of time slots Npucch for PUCCH transmission repetitions, the indicated N>1 (or M>1) TCI states or TCI state pairs may alternate in every Npucch repetitions of PUCCH transmission, where Npucch=1 if the high-level parameter mapping mode = "cyclicMapping"; otherwise, Npucch=N (or M). For example, for N=2 (or M=2), the first and second indicated TCI states / TCI state pairs may alternate in every Npucch repetitions of PUCCH transmission, where Npucch=1 if the high-level parameter mapping mode = "cyclicMapping"; otherwise, Npucch=2. In the present disclosure, the first (or second) indicated TCI state / TCI state pair may correspond to any one of the indicated M=2 (or N=2) TCI states / TCI state pairs.

[0297] When the UE is configured with two SRS resource sets (e.g., provided by srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2) where the higher layer parameter usage in SRS-ResourceSet is set to "codebook" or "noncodebook", for PUSCH repetition type A, the same symbol allocation is applied across K consecutive slots in the case of K>1 consecutive slots, and PUSCH is limited to a single transmission layer. The UE shall repeat the TB across K consecutive slots, applying the same symbol allocation in each slot, also known as PUSCH transmission repetition.

[0298] In one example, (1) when K=2, M=2 or N=2, the first and second indicated TCI states / TCI state pairs are applied to the first and second time slots of 2 consecutive time slots, respectively; (2) when K>2 and cyclicMapping in PUSCH-Config is enabled, the indicated TCI state / TCI state pair n (or m) is applied to the nth (or mth) time slot of K consecutive time slots, and the same TCI state mapping mode continues to be applied to the remaining time slots of the K consecutive time slots. For M=2 or N=2, the first and second indicated TCI states / TCI state pairs are applied to the first and second time slots of K consecutive time slots, respectively, and the same TCI state mapping mode continues to be applied to the remaining time slots of the K consecutive time slots; (3) when K>2 and SequenceMapping in PUSCH-Config is enabled, the indicated TCI state / TCI state pair n (or m) is applied to the nth (or mth) and (n+1th) (or (m+1)th) time slots of K consecutive time slots, and the same TCI state mapping mode continues to be applied to the remaining time slots of the K consecutive time slots.

[0299] For M=2 or N=2, the first indicated TCI state / TCI state pair is applied to the first and second time slots of the K consecutive time slots, and the second indicated TCI state / TCI state pair is applied to the third and fourth time slots of the K consecutive time slots, and the same TCI state mapping mode continues to be applied to the remaining time slots of the K consecutive time slots. In the present disclosure, the first (or second) indicated TCI state / TCI state pair may correspond to any one of the indicated M=2 (or N=2) TCI state / TCI state pairs. In this example, the first and second indicated TCI states / TCI state pairs may correspond to the first and second TCI states / TCI state pairs of the indicated M=2 (or N=2) TCI states / TCI state pairs, respectively.

[0300] In another example, (1) when K=2, M=2 or N=2, the second and first indicated TCI states / TCI state pairs are applied to the first and second time slots of 2 consecutive time slots, respectively; (2) when K>2 and cyclicMapping in PUSCH-Config is enabled, for M=2 or N=2, the second and first indicated TCI states / TCI state pairs are applied to the first and second time slots of K consecutive time slots, respectively, and the same TCI state mapping mode continues to be applied to the remaining time slots of the K consecutive time slots; (3) when K>2 and sequentialMapping in PUSCH-Config is enabled, for M=2 or N=2, the second indicated TCI state / TCI state pair is applied to the first and second time slots of K consecutive time slots, and the first indicated TCI state / TCI state pair is applied to the third and fourth time slots of the K consecutive time slots, and the same TCI state mapping mode continues to be applied to the remaining time slots of the K consecutive time slots. In the present disclosure, the first (or second) indicated TCI state / TCI state pair may correspond to any one of the indicated M=2 (or N=2) TCI states / TCI state pairs. In this example, the first and second indicated TCI states / TCI state pairs may correspond to the first and second TCI states / TCI state pairs of the indicated M=2 (or N=2) TCI states / TCI state pairs, respectively.

[0301] When the UE is configured with two SRS resource sets (e.g., provided by srs-ResourceSetToAddModList or srs-ResourceSetToAddModList DCI-0-2) where the higher layer parameter usage in the SRS-ResourceSet is set to "codebook" or "noncodebook", for PUSCH repetition type B, in case of K>1 consecutive time slots, the same symbol allocation applies across K consecutive time slots and the PUSCH is limited to a single transmission layer. The UE shall repeat the TB across K consecutive time slots, applying the same symbol allocation in each time slot, also known as the PUSCH (nominal) transmission repetition. One or more indicated M>1 (or N>1) TCI states / TCI state pairs may be associated with / mapped to the nominal PUSCH repetition. The association / mapping between the indicated TCI state / TCI state pair and the nominal PUSCH repetition may be determined by considering the nominal repetition instead of the time slot for PUSCH type A repetition.

[0302] In addition, as described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. The SRS resource set indicator may indicate one or more of the following: (1) switching between single TRP PUCCH or PUSCH transmission and multi-TRP PUCCH or PUSCH (repeated) transmission, (2) one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs for single TRP PUCCH or PUSCH transmission, and (3) switching the order of the indicated M>1 (or N>1) TCI states or TCI state pairs for multi-TRP PUCCH or PUSCH (repeated) transmission.

[0303] In one example, the UE may first receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PUCCH transmission repetitions or PUSCH transmission repetitions, as described above for multi-TRP PUCCH or PUSCH (repetition) transmissions.

[0304] As described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. For example, if the bit field of the SRS resource set indicator is set to "00" or "01" or the index of the SRS resource set indicator is set to "0" or "1" according to Table 1, or the SRS resource set indicator field is not configured / does not exist, the UE can use only the indicated M>1 (or N>1) TCI state or one of the TCI state pairs to transmit PUCCH or PUSCH, i.e., PUCCH or PUSCH transmission in a single TRP system; if the bit field of the SRS resource set indicator is set to "10" or "11" or the index of the SRS resource set indicator is set to "2" or "3" or the SRS resource set indicator field is not configured / does not exist, the UE can use one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs to transmit PUCCH transmission repetitions or PUSCH transmission repetitions, i.e., PUCCH or PUSCH (repetition) transmissions in a multi-TRP system. More specifically, if the bit field of the SRS resource set indicator is set to "00" or "01" or the index of the SRS resource set indicator is set to "0" or "1" according to Table 1 or the SRS resource set indicator field is not configured / does not exist (i.e., for PUCCH or PUSCH transmission in a single TRP system),

[0305] For example, the UE may transmit PUCCH or PUSCH using the first TCI state among the indicated M>1 (or N>1) TCI states or the TCI state with the lowest (or highest) TCI state ID or a separate UL TCI state or a joint DL and UL TCI state in the first TCI state pair or a separate UL TCI state or a joint DL and UL TCI state in the TCI state pair associated with the lowest (or highest) TCI state ID among the indicated M>1 (or N>1) TCI state pairs.

[0306] For another example, the UE may use a second TCI state among the indicated M>1 (or N>1) TCI states, or a TCI state with the second lowest (or second highest) TCI state ID, or a separate UL TCI state or a joint DL and UL TCI state in a second TCI state pair, or a separate UL TCI state or a joint DL and UL TCI state in a TCI state pair associated with the second lowest (or second highest) TCI state ID in the indicated M>1 (or N>1) TCI state pair to transmit PUCCH or PUSCH.

[0307] For another example, the UE may use the last TCI state among the indicated M>1 (or N>1) TCI states or the TCI state with the highest (or lowest) TCI state ID or the separate UL TCI state or the joint DL and UL TCI state in the last TCI state pair or the separate UL TCI state or the joint DL and UL TCI state in the TCI state pair associated with the highest (or lowest) TCI state ID among the indicated M>1 (or N>1) TCI state pairs to transmit PUCCH or PUSCH.

[0308] For another example, the UE may use the mth (or nth) TCI state among the indicated M>1 (or N>1) TCI states or the TCI state with the mth (or nth) lowest (or highest) TCI state ID or the separate UL TCI state or the joint DL and UL TCI state in the mth (or nth) TCI state pair or the separate UL TCI state or the joint DL and UL TCI state in the TCI state pair associated with the mth (or nth) lowest (or highest) TCI state ID in the indicated M>1 (or N>1) TCI state pair to transmit PUCCH or PUSCH, where m∈{1, ..., M} and n∈{1, ..., N}. In this example, the index m (or n) may be determined according to at least one of the following: (1) fixed in the system specification, and (2) configured by the network, such as via high-layer RRC signaling or MAC CE command or DCI-based signaling.

[0309] For another example, the UE may use a separate UL TCI state or a joint DL and UL TCI state in the indicated M>1 (or N>1) TCI states to transmit PUCCH or PUSCH. In this example, only one of the indicated M>1 (or N>1) TCI states may correspond to a separate UL TCI state or a joint DL and UL TCI state.

[0310] For another example, the UE may be configured with a list of K entity IDs by the network high layer. In the present disclosure, the entity ID may correspond to at least one of the following: a PCI value, a PCI index pointing to an entry / PCI in a PCI list configured by the high layer to the UE, a value of CORESETPoolIndex, a value of CORESETGroupIndex, a TRP ID, a TRP-specific high-layer signaling index, a CORESET ID, a resource ID / index, a resource set ID / index, etc. The UE may use a TCI state or TCI state pair associated with the first entity ID or the second entity ID or the last entity ID or the lowest entity ID or the highest entity ID or the second lowest (or second highest) entity ID or an entity ID associated with a serving cell PCI / PCI index or an entity ID associated with a PCI / PCI index different from the serving cell PCI / PCI index or the kth entity ID in a list of K entity IDs or the kth lowest (or highest) entity ID to transmit PUCCH or PUSCH, where k∈{1,…,K}. In this example, the index k may be determined according to at least one of the following: (1) fixed in the system specification, and (2) configured by the network, such as via high-layer RRC signaling or MAC CE command or DCI-based signaling. In addition, K may be equal to M (or N).

[0311] For another example, the UE may be configured with a list of L PCIs through a network high layer. The UE may use a TCI state or TCI state pair associated with the first PCI or the second PCI or the last PCI or the lowest PCI or the highest PCI or the second lowest (or second highest) PCI or the serving cell PCI or a PCI different from the serving cell PCI or the lth PCI or the lth lowest (or highest) PCI in the list of L PCIs to transmit PUCCH or PUSCH, where l∈{1,…,L}.

[0312] Alternatively, the UE may determine a list of L PCI indices 0, ..., L-1 or 1, ..., L, where each PCI index points to an entry in the list of L PCIs. For this case, the UE may use a TCI state or TCI state pair associated with the first PCI index or the second PCI index or the last PCI index or the lowest PCI index or the highest PCI index or the second lowest (or second highest) PCI index or the serving cell PCI index or a PCI index different from the serving cell PCI index or the lth PCI index or the lth lowest (or highest) PCI index in the list of L PCI indices to transmit PUCCH or PUSCH, where l∈{1, ..., L}. In this example, the index l may be determined according to at least one of the following: (1) fixed in the system specification, and (2) configured by the network, such as via high-level RRC signaling or MAC CE command or DCI-based signaling. In addition, L may be equal to M (or N).

[0313] For another example, two CORESETPoolIndex values ​​(i.e., 0 and 1) may be provided to the UE in the PDCCH-Config for one or more CORESETs. The UE may use a TCI state or TCI state pair associated with a CORESETPoolIndex value of 0, a CORESETPoolIndex value of 1, or a CORESETPoolIndex value of x to transmit a PUCCH or PUSCH, where x∈{0,1}. In this example, the value x may be determined according to at least one of the following: (1) fixed in the system specification, and (2) configured by the network, such as via high-layer RRC signaling or MAC CE command or DCI-based signaling.

[0314] In another example, the UE may first receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), as specified in the examples and corresponding sub-examples of the present disclosure, wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PUCCH transmission repetitions or PUSCH transmission repetitions, as described above for multi-TRP PUCCH or PUSCH (repetition) transmissions.

[0315] As described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP and multi-TRP operations. If the bit field of the SRS resource set indicator is set to "00" (or "01") or the index of the SRS resource set indicator is set to "0" (or "1") according to Table 1, the UE can use one of the indicated M>1 (or N>1) TCI states or TCI state pairs (primary TCI state or TCI state pair) to transmit PUCCH or PUSCH, that is, PUCCH or PUSCH transmission in a single TRP system; if the bit field of the SRS resource set indicator is set to "01" (or "00") or the index of the SRS resource set indicator is set to "1" (or "0") according to Table 1, the UE can use the other one of the indicated M>1 (or N>1) TCI states or TCI state pairs (secondary TCI state or TCI state pair) to transmit PUCCH or PUSCH, that is, PUCCH or PUSCH transmission in a single TRP system. The present disclosure provides various design examples for determining a primary TCI state or TCI state pair or a secondary TCI state or TCI state pair.

[0316] In another example, the UE may first receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation) (represented and ordered by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, …, TCI state / TCI state pair #aM (or #aN)}), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PUCCH transmission repetitions or PUSCH transmission repetitions, as described above for multi-TRP PUCCH or PUSCH (repetition) reception.

[0317] As described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. For example, if the bit field of the SRS resource set indicator is set to "11" or "10" or the index of the SRS resource set indicator is set to "3" or "2" according to Table 1 or the SRS resource set indicator field is not configured / does not exist, the order of the indicated M>1 (or N>1) TCI states or TCI state pairs will be reversed, and the UE will follow the reversed order of the M>1 (or N>1) TCI states or TCI state pairs to transmit one or more PUs associated with the reversed order of the M>1 (or N>1) TCI states or TCI state pairs. CCH transmission repetition or PUSCH transmission repetition, and if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1 or if the SRS resource set indicator field is not configured / does not exist, the UE will follow the indicated M>1 (or N>1) TCI states or TCI state pairs to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the indicated M>1 (or N>1) TCI states or TCI state pairs.

[0318] If the indicated M>1 (or N>1) TCI states or TCI state pairs are (sorted as) {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, …, TCI state / TCI state pair #aM (or #aN)}, then when the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1 or the SRS resource set indicator field is not configured / does not exist, the (order-reversed) M>1 (or N>1) TCI states or TCI state pairs will become {TCI state / TCI state pair #b1, TCI state / TCI state pair #b2, …, TCI state / TCI state pair #bM (or #bN)}, where b1=aM (or aN), b2=a(M-1) or (a(N-1)), …, bM (or bN)=a1. For M=2 (or N=2), the UE may first receive two TCI states or TCI state pairs (represented and ordered by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2}) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1 or the SRS resource set indicator field is not configured / does not exist, the UE will follow the two TCI states or TCI state pairs {TCI state / TCI state pair #a2, TCI state / TCI state pair #a1} in reverse order to transmit the TCI state or TCI state pair {TCI state / TCI state pair #a2, TCI state / TCI state pair #a1} in reverse order. CI state pair #a2, TCI state / TCI state pair #a1} and if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1 or if the SRS resource set indicator field is not configured / does not exist, the UE shall follow the indicated two TCI states or TCI state pairs {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2} to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the indicated TCI state or TCI state pair {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2}.

[0319] In another example, the UE may first receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation) (represented by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, …, TCI state / TCI state pair #aM (or #aN)}), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PUCCH transmission repetitions or PUSCH transmission repetitions, as described above for multi-TRP PUCCH or PUSCH (repetition) transmissions.

[0320] As described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. For example, if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1, the UE will follow the M>1 (or N>1) TCI states or TCI state pairs sorted by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, ..., TCI state / TCI state #aM (or #aN)} (first sorting) to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the M>1 (or N>1) TCI states or TCI state pairs sorted by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, ..., TCI state / TCI state #aM (or #aN)}. , and if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE will follow the M>1 (or N>1) TCI states or TCI state pairs sorted by {TCI state / TCI state pair #b1, TCI state / TCI state pair #b2, ..., TCI state / TCI state #bM (or #bN)} (second sorting) to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the M>1 (or N>1) TCI states or TCI state pairs sorted by {TCI state / TCI state pair #b1, TCI state / TCI state pair #b2, ..., TCI state / TCI state #bM (or #bN)}.

[0321] The first ordering of TCI state / TCI state pairs {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2, ..., TCI state / TCI state #aM (or #aN)} or the second ordering of TCI state / TCI state pairs {TCI state / TCI state pair #b1, TCI state / TCI state pair #b2, ..., TCI state / TCI state #bM (or #bN)} may be determined according to at least one of the following: (1) fixed in the system specification, and (2) configured by the network, such as via high-level RRC signaling or MAC CE command or DCI-based signaling. For (1) and (2), b1 may be equal to aM (or aN), b2 may be equal to a(M-1) or (a(N-1)), ..., bM (or bN) may be equal to a1. For M=2 (or N=2), the UE may first receive two TCI states or TCI state pairs (represented by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2}) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1, the UE will follow the two TCI states or TCI state pairs ordered by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2} to transmit the same TCI state or TCI state pairs as those ordered by {TCI state / TCI state pair #a1, TCI state / TCI state pair #a2}. One or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with two TCI states or TCI state pairs sorted by {TCI state / TCI state pair #a2, TCI state / TCI state pair #a1}, and if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE will follow the two TCI states or TCI state pairs sorted by {TCI state / TCI state pair #a2, TCI state / TCI state pair #a1} to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the two TCI states or TCI state pairs {TCI state / TCI state pair #a2, TCI state / TCI state pair #a1}.

[0322] In yet another example, the UE may first receive M=1 (or N=1) TCI states or TCI state pairs indicated by a TCI state code point (or TCI field) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation). The UE may then receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PUCCH transmission repetitions or PUSCH transmission repetitions, as described above for multi-TRP PUCCH or PUSCH (repetition) transmissions.

[0323] For example, the UE will follow the latest indicated M>1 (or N>1) TCI states or TCI state pairs to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the latest indicated M>1 (or N>1) TCI states or TCI state pairs, i.e., multi-TRP PUCCH or PUSCH (repetition) transmissions.

[0324] For another example, as described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. For example, if the bit field of the SRS resource set indicator is set to "10" or "11" or the index of the SRS resource set indicator is set to "2" or "3" according to Table 1 or the SRS resource set indicator field is not configured / does not exist, the UE will follow the latest indicated M>1 (or N>1) TCI states or TCI state pairs to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the latest indicated M>1 (or N>1) TCI states or TCI state pairs, i.e., multiple TRPPUCCH or PUSCH (repetition) transmissions. If the bit field of the SRS resource set indicator is set to "00" or "01" according to Table 1, or the index of the SRS resource set indicator is set to "0" or "1", or the SRS resource set indicator field is not configured / does not exist, the UE will follow the previously indicated M=1 (or N=1) TCI states or TCI state pairs to transmit PUCCH or PUSCH, i.e., single TRP PUCCH or PUSCH transmission.

[0325] For another example, as described above, the UE may receive an SRS resource set indicator (e.g., in an "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. For example, if the bit field of the SRS resource set indicator is set to "00" or "01" or the index of the SRS resource set indicator is set to "0" or "1" according to Table 1, or the SRS resource set indicator field is not configured / does not exist, the UE will follow the previously indicated M=1 (or N=1) TCI state or TCI state pair to transmit PUCCH or PUSCH, that is, single TRPPUCCH or PUSCH transmission; if the bit field of the SRS resource set indicator is set to "10" or "11", or the index of the SRS resource set indicator is set to "2" or "3" according to Table 1, or the SRS resource set indicator field is not configured / does not exist, the UE will follow the latest indicated M>1 (or N>1) TCI state or TCI state pair to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the latest indicated M>1 (or N>1) TCI state or TCI state pair, that is, multiple TRP PUCCH or PUSCH (repetition) transmission.

[0326] In another example, the UE may first receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PUCCH transmission repetitions or PUSCH transmission repetitions, as described above for multi-TRP PUCCH or PUSCH (repetition) transmissions.

[0327] As described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP and multi-TRP operations. The SRS resource set indicator may indicate one or more of the following: (1) single TRP PUCCH or PUSCH transmission, (2) multi-TRP PUCCH or PUSCH (repeated) transmission, (3) one or more orderings of the indicated TCI states or TCI state pairs for single TRP PUCCH or PUSCH transmission or multi-TRP PUCCH or PUSCH (repeated) transmission, and (4) one or more TCI states or TCI state pairs for single TRP PUCCH or PUSCH transmission or multi-TRP PUCCH or PUSCH (repeated) transmission.

[0328] For example, if the bit field of the SRS resource set indicator is set to "00" or "01" or the index of the SRS resource set indicator is set to "0" or "1" according to Table 1, the UE can use only one of the indicated M>1 (or N>1) TCI states or TCI state pairs to transmit PUCCH or PUSCH, i.e., PUCCH or PUSCH transmission in a single TRP system, i.e., PDSCH reception in a single TRP system; if the bit field of the SRS resource set indicator is set to "01" or "00" or the index of the SRS resource set indicator is set to "1" or "0" according to Table 1, the UE can use one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions, as described above, i.e., PUCCH or PUSCH (repetition) transmissions in a multi-TRP system. If the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1, the UE will follow the indicated order of the M>1 (or N>1) TCI states or TCI state pairs to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the indicated M>1 (or N>1) TCI states or TCI state pairs; if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE will follow the M>1 (or N>1) TCI states or TCI state pairs in reverse order to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the M>1 (or N>1) TCI states or TCI state pairs in reverse order.

[0329] Alternatively, if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1, the UE will follow the first ordering of M>1 (or N>1) TCI states or TCI state pairs to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the first-ordered M>1 (or N>1) TCI states or TCI state pairs; if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE will follow the second ordering of M>1 (or N>1) TCI states or TCI state pairs to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the second-ordered M>1 (or N>1) TCI states or TCI state pairs. The first and second orderings of TCI states / TCI state pairs may be determined.

[0330] Optionally, the bit field "00" or "01" or index "0" or "1" of the 2-bit SRS resource set indicator can be used to indicate the ordering of M>1 (or N>1) TCI states or TCI state pairs for multi-TRP PUCCH or PUSCH (repeated) transmission as described above, and the bit field "10" or "11" or index "2" or "3" of the 2-bit SRS resource set indicator can be used to indicate single TRP PUCCH / PUSCH transmission or multi-TRP PUCCH / PUSCH (repeated) transmission as described above.

[0331] For another example, if the bit field of the SRS resource set indicator is set to "00" (or "01") or the index of the SRS resource set indicator is set to "0" (or "1") according to Table 1, the UE can use the primary TCI state or TCI state pair determined from the indicated M>1 (or N>1) TCI states or TCI state pairs to transmit PUCCH or PUSCH, that is, PUCCH or PUSCH transmission in a single TRP system; if the bit field of the SRS resource set indicator is set to "01" (or "00") or the index of the SRS resource set indicator is set to "1" (or "2") according to Table 1, the UE can use the secondary TCI state or TCI state pair determined from the indicated M>1 (or N>1) TCI states or TCI state pairs to transmit PUCCH or PUSCH, that is, PUCCH or PUSCH transmission in a single TRP system; the primary and secondary TCI states / TCI state pairs can be determined / configured.

[0332] If the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1, the UE will follow the indicated order of the M>1 (or N>1) TCI states or TCI state pairs to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the indicated M>1 (or N>1) TCI states or TCI state pairs (according to the examples in the present disclosure); if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE will follow the M>1 (or N>1) TCI states or TCI state pairs in reverse order to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the M>1 (or N>1) TCI state or TCI state pairs in reverse order.

[0333] Alternatively, if the bit field of the SRS resource set indicator is set to "10" (or "11") or the index of the SRS resource set indicator is set to "2" (or "3") according to Table 1, the UE will follow the first ordering of M>1 (or N>1) TCI states or TCI state pairs to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the first ordering of M>1 (or N>1) TCI states or TCI state pairs; if the bit field of the SRS resource set indicator is set to "11" (or "10") or the index of the SRS resource set indicator is set to "3" (or "2") according to Table 1, the UE will follow the second ordering of M>1 (or N>1) TCI states or TCI state pairs to transmit one or more PUCCH transmission repetitions or PUSCH transmission repetitions associated with the second ordering of M>1 (or N>1) TCI states or TCI state pairs.

[0334] The first and second ordering of TCI states / TCI state pairs can be determined. Optionally, the bit field "00" or "01" or the index "0" or "1" of the 2-bit SRS resource set indicator can be used to indicate the ordering of M>1 (or N>1) TCI states or TCI state pairs for multi-TRP PUCCH or PUSCH (repeated) transmission as described above, and the bit field "10" or "11" or the index "2" or "3" of the 2-bit SRS resource set indicator can be used to indicate the primary or secondary TCI state / TCI state pair for single TRP PUCCH or PUSCH transmission as described above.

[0335] For another example, in addition to the 2-bit SRS resource set indicator, the UE may also receive a one-bit indicator in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation). For this design example, a new / dedicated DCI field may be used / configured in the corresponding DCI format to indicate the one-bit indicator; alternatively, one or more existing DCI fields in the corresponding DCI format may be used / configured to indicate the one-bit indicator. When the 2-bit SRS resource set indicator indicates a single TRP PUCCH or PUSCH transmission, if the one-bit indicator is set to "0" (or "1"), the UE can transmit PUCCH or PUSCH using the primary TCI state or TCI state pair determined from the indicated M>1 (or N>1) TCI states or TCI state pairs; if the one-bit indicator is set to "1" (or "0"), the UE can transmit PUCCH or PUSCH using the secondary TCI state or TCI state pair determined from the indicated M>1 (or N>1) TCI states or TCI state pairs; the primary and secondary TCI states / TCI state pairs can be determined / configured.

[0336] For another example, the SRS resource set indicator indicated in DCI format 0_1 ​​or 0_2 (e.g., in the "SRS resource set indicator" field) may correspond to a z-bit indicator (z>1, e.g., z=3) having 2^z states or bit fields (e.g., 8 states or bit fields for z=3). In this example, a first state or bit field of the z-bit indicator may indicate that single TRPPUCCH or PUSCH transmission is enabled, a second state or bit field of the z-bit indicator may indicate that multiple TRP PUCCH or PUSCH (repeated) transmission is enabled, a third state or bit field of the z-bit indicator may indicate that the UE may use a primary TCI state or TCI state pair for single TRP PUCCH or PUSCH transmission, a fourth state or bit field of the z-bit indicator may indicate that the UE may use a secondary TCI state or TCI state pair for single TRP PUCCH or PUSCH transmission, a fifth state or bit field of the z-bit indicator may indicate an ordering of M>1 (or N>1) TCI states or TCI state pairs for multiple TRP PUCCH or PUSCH (repeated) transmission, and a sixth state or bit field of the z-bit indicator may indicate another ordering of M>1 (or N>1) TCI states or TCI state pairs for multiple (repeated) transmissions.

[0337] In yet another example, the UE may first receive M=1 (or N=1) TCI states or TCI state pairs indicated by a TCI state code point (or TCI field) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation). The UE may then receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points (or one or more TCI fields) in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PUCCH transmission repetitions or PUSCH transmission repetitions, as described above for multi-TRP PUCCH or PUSCH (repetition) transmissions.

[0338] In addition, as described above, the UE may also receive an SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation. The SRS resource set indicator may indicate one or more of the following: (1) single TRP PUCCH or PUSCH transmission, (2) multi-TRP PUCCH / PUSCH (repeated) transmission, (3) one or more orderings of indicated TCI states or TCI state pairs for single TRP PUCCH / PUSCH transmission or multi-TRP PUCCH / PUSCH (repeated) transmission, and (4) one or more TCI states or TCI state pairs for single TRP PUCCH / PUSCH transmission or multi-TRP PUCCH or PUSCH (repeated) transmission. The SRS resource set indicator may be configured.

[0339] For this example, if the SRS resource set indicator indicates that single-TRP PUCCH or PUSCH transmission is enabled, the UE may follow the previously indicated M=1 (or N=1) TCI state or TCI state pair to transmit PUCCH or PUSCH.

[0340] The UE may receive from the network one or more MAC CE subselection / activation commands to activate one or more sets of TCI states / TCI state IDs from one or more TCI state pools or one or more TCI state groups, wherein each set of activated / selected TCI states / TCI state IDs is used to map to a maximum of Nc≥1 (e.g., 8, 16, 32, or 64) TCI state code points in the DCI format. Here, the TCI state code points may be configured.

[0341] Additionally, the activated / selected set or sets of TCI status code points may include / contain / comprise one or more of the following examples.

[0342] In one example, a first set of TCI state code points for single TRP PUCCH or PUSCH transmission: the UE can receive M=1 (or N=1) TCI states or TCI state pairs indicated by TCI state code points from the first set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); the UE can use the indicated TCI states or TCI state pairs for single TRP PUCCH or PUSCH transmission.

[0343] In another example, a second set of TCI state code points for single TRP PUCCH or PUSCH transmission: the UE can receive M=1 (or N=1) TCI states or TCI state pairs indicated by TCI state code points from the second set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); the UE can use the indicated TCI state or TCI state pair as the main TCI state or TCI state pair for single TRP PUCCH or PUSCH transmission.

[0344] In another example, a third set of TCI state code points for single TRP PUCCH or PUSCH transmission: the UE can receive M=1 (or N=1) TCI states or TCI state pairs indicated by TCI state code points from the third set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); the UE can use the indicated TCI states or TCI state pairs as secondary TCI states or TCI state pairs for single TRP PUCCH or PUSCH transmission.

[0345] In another example, a fourth set of TCI state code points for multi-TRP PUCCH or PUSCH (repetition) transmission: the UE can receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points from the fourth set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs can be associated with / mapped to one or more PUCCH transmission repetitions or PUSCH transmission repetitions, as described above for multi-TRP PUCCH or PUSCH (repetition) transmission.

[0346] In yet another example, a fifth set of TCI state code points for multi-TRP PUCCH or PUSCH (repetition) transmission: The UE may receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points from the fifth set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PUCCH transmission repetitions or PUSCH transmission repetitions, as described above for multi-TRP PUCCH or PUSCH (repetition) transmission. The ordering of the indicated M>1 (or N>1) TCI states or TCI state pairs from the fifth set may correspond to the ordering of the M>1 (or N>1) TCI states or TCI state pairs (e.g., a first ordering).

[0347] In yet another example, a sixth set of TCI state code points for multi-TRP PUCCH or PUSCH (repetition) transmission: The UE may receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points from the sixth set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be associated with / mapped to one or more PUCCH transmission repetitions or PUSCH transmission repetitions, as described above for multi-TRP PUCCH or PUSCH (repetition) transmission. The ordering of the indicated M>1 (or N>1) TCI states or TCI state pairs from the sixth set may correspond to the ordering of the M>1 (or N>1) TCI states or TCI state pairs (e.g., a second ordering).

[0348] The network may indicate to the UE which group of TCI state code points the indicated one or more TCI states or TCI state pairs are selected from. This indication may be made via high-level RRC signaling or MAC CE command or signaling based on dynamic DCI. For example, the UE may also receive a y-bit (y≥1) SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets. Here, the SRS resource set indicator is used to indicate a set of TCI state code points. Each state / bit field / index of the y-bit SRS resource set indicator (the y-bit SRS resource set indicator has a total of 2^y states or bit fields) may correspond to a set of TCI state code points (e.g., the first group, the second group, the third group, the fourth group, the fifth group, or the sixth group as described above).

[0349] For example, if the UE receives a y-bit SRS resource set indicator in the "SRS resource set indicator" field in DCI format 0_1 ​​or 0_2 (e.g., set to a state or bit field value), the UE may determine a set of TCI state code points corresponding to the indicated state or bit field value of the y-bit SRS resource set indicator, from which the indicated one or more TCI states or TCI state pairs are selected. Based on the determined set of TCI state code points, the UE may perform / conduct a corresponding single TRP PUCCH or PUSCH transmission or a multi-TRP PUCCH or PUSCH (repeated) transmission, as described above.

[0350] Throughout the present disclosure, when the UE is configured with two SRS resource sets (including a first SRS resource set and a second SRS resource set), wherein the use of higher layer parameters in each SRS resource set is set to "codebook" or "noncodebook", the PUSCH transmission repetition or timing (including the first PUSCH transmission repetition / timing and the second PUSCH transmission repetition / timing) specified in the present disclosure is associated with the first SRS resource set and the second SRS resource set, respectively. In addition, throughout the present disclosure, unless otherwise specified, associating the first (indicated) TCI state / TCI state pair with the PUSCH transmission repetition is equivalent to associating the first (indicated) TCI state / TCI state pair with the first (or second) PUSCH transmission repetition / timing, and associating the second (indicated) TCI state / TCI state pair with the PUSCH transmission repetition is equivalent to associating the second (indicated) TCI state / TCI state pair with the second (or first) PUSCH transmission repetition / timing.

[0351] In one embodiment, the UE may receive an SRS resource set indicator (e.g., in an "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets for single TRP or multi-TRP operation according to Table 1 in the present disclosure. The SRS resource set indicator may also indicate one or more of the following: (1) single TRP transmission / reception or multi-TRP (repeated) transmission / reception, (2) one or more orderings of the indicated TCI states / TCI state pairs, and (3) for one or more different channels, which TCI state / TCI state pair to use if single TRP transmission / reception is enabled / configured. Here, one or more different channels may correspond to: (a) PDCCH and PDSCH, (b) PDCCH and PUCCH, (c) PDCCH and PUSCH, (d) PDSCH and PUCCH, (e) PDSCH and PUSCH, (f) PUCCH and PUSCH, (g) PDCCH, PDSCH and PUCCH, (h) PDCCH, PDSCH and PUSCH, (i) PDCCH, PUCCH and PUSCH, (j) PDSCH, PUCCH and PUSCH or (k) PDCCH, PDSCH, PUCCH and PUSCH. In this embodiment:

[0352] An SRS resource set indicator for PDCCH may be configured / indicated for each of one or more channels.

[0353] An SRS resource set indicator for PDCCH may be configured / indicated for each of one or more channels.

[0354] The SRS resource set indicator for the PDCCH may be used / applied to indicate the TCI state / TCI state pair ordering of each of the one or more channels.

[0355] The SRS resource set indicator for the PDCCH may be used / applied to indicate the TCI state / TCI state pair ordering of each of the one or more channels.

[0356] An SRS resource set indicator for PDCCH may be configured / indicated for each of one or more channels.

[0357] An SRS resource set indicator for PDCCH, PUCCH or PUSCH may be configured / indicated for each of one or more channels.

[0358] An SRS resource set indicator for PDCCH, PUCCH or PUSCH may be configured / indicated for each of one or more channels.

[0359] An SRS resource set indicator for PDCCH, PDSCH, PUCCH or PUSCH may be configured / indicated for each of one or more channels.

[0360] The UE may receive from the network one or more MAC CE subselection / activation commands to activate one or more sets of TCI states / TCI state IDs from one or more TCI state pools or one or more TCI state groups, wherein each set of activated / selected TCI states / TCI state IDs is used to map to a maximum of Nc≥1 (e.g., 8, 16, 32, or 64) TCI state code points in the DCI format. Here, the TCI state code points may be configured. In addition, the activated / selected one or more sets of TCI state code points may include / contain / include one or more of the following.

[0361] In one example, a first set of TCI state code points for single TRP transmission / reception for each of one or more channels: the UE can receive M=1 (or N=1) TCI states or TCI state pairs indicated by TCI state code points from the first set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); the UE can use the indicated TCI states or TCI state pairs for single TRP transmission / reception for each of the one or more channels.

[0362] In another example, a second set of TCI state code points for single TRP transmission / reception for each of one or more channels: the UE can receive M=1 (or N=1) TCI states or TCI state pairs indicated by TCI state code points from the second set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); the UE can use the indicated TCI state or TCI state pair as the main TCI state or TCI state pair for single TRP transmission / reception for each of one or more channels.

[0363] In another example, a third set of TCI state code points for single TRP transmission / reception for each of one or more channels: the UE can receive M=1 (or N=1) TCI states or TCI state pairs indicated by TCI state code points from the third set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation); the UE can use the indicated TCI states or TCI state pairs as secondary TCI states or TCI state pairs for single TRP transmission / reception for each of one or more channels.

[0364] In another example, a fourth set of TCI state code points for multi-TRP (repetitive) transmission / reception for each of one or more channels: the UE can receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points from the fourth set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs can be used for multi-TRP (repetitive) transmission / reception for each of one or more channels.

[0365] In yet another example, a fifth set of TCI state code points for multi-TRP (repetitive) transmission / reception for each of one or more channels: the UE may receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points from the fifth set of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be used for multi-TRP (repetitive) transmission / reception for each of one or more channels. The ordering of the indicated M>1 (or N>1) TCI states or TCI state pairs from the fifth set may correspond to the ordering of the M>1 (or N>1) TCI states or TCI state pairs discussed in the present disclosure (e.g., a first ordering).

[0366] In yet another example, a sixth group of TCI state code points for multi-TRP (repetitive) transmission / reception for each of one or more channels: the UE may receive M>1 (or N>1) TCI states or TCI state pairs indicated by one or more TCI state code points from the sixth group of TCI state code points in a DCI (e.g., DCI format 1_1 or 1_2 with or without DL allocation), wherein one or more of the indicated M>1 (or N>1) TCI states or TCI state pairs may be used for multi-TRP (repetitive) transmission / reception for each of one or more channels. The ordering of the indicated M>1 (or N>1) TCI states or TCI state pairs from the sixth group may correspond to the ordering of the M>1 (or N>1) TCI states or TCI state pairs discussed in the present disclosure (e.g., the second ordering).

[0367] In another example, the network may indicate to the UE which group of TCI state code points the indicated one or more TCI states or TCI state pairs are selected from. This indication may be made via high-level RRC signaling or MAC CE command or signaling based on dynamic DCI. For example, the UE may also receive a y-bit (y≥1) SRS resource set indicator (e.g., in the "SRS resource set indicator" field) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) to indicate one or more SRS resource sets. Here, the SRS resource set indicator is used to indicate a set of TCI state code points. Each state / bit field / index of the y-bit SRS resource set indicator (the y-bit SRS resource set indicator has a total of 2^y states or bit fields) may correspond to a set of TCI state code points (e.g., the first group, the second group, the third group, the fourth group, the fifth group, or the sixth group as described above).

[0368] For example, if the UE receives a y-bit SRS resource set indicator in the "SRS resource set indicator" field in DCI format 0_1 ​​or 0_2 (e.g., set to a state or bit field value), the UE can determine a set of TCI state code points corresponding to the indicated state or bit field value of the y-bit SRS resource set indicator, from which the indicated one or more TCI states or TCI state pairs are selected. Based on the determined set of TCI state code points, the UE can perform / conduct corresponding single TRP PDCCH or PDSCH reception or PUCCH or PUSCH transmission or multi-TRP PDCCH or PDSCH (repeated) reception or PUCCH or PUSCH (repeated) transmission, as described above.

[0369] As disclosed herein, the UE may be indicated / provided by the network, for example, in a beam indication DCI (e.g., DCI format 1_1 / 1_2 with or without DL allocation) by one or more TCI code points of one or more TCI fields in the beam indication DCI, wherein the indicated TCI state may be a joint DL and UL TCI state provided by DLorJoint-TCIState, or a separate DL TCI state provided by DLorJoint-TCIState, or a separate UL TCI state provided by UL-TCIState, for example, both the first and second indicated TCI states / TCI state pairs may be joint DL and UL TCI states, respectively provided by DLorJoint-TCIState, or both the first and second indicated TCI states / TCI state pairs may be separate UL TCI states, respectively provided by UL-TCIState.

[0370] In addition, the UE may also receive an x-bit indicator (x≥0, for example, x=0, x=1, x=2, etc.) in an uplink DCI (e.g., DCI format 0_1 ​​or 0_2), where the uplink DCI may schedule one or more PUSCH transmissions associated with an SRS resource set, and the x-bit indicator may be a new DCI indicator field introduced in the corresponding DCI format (e.g., 0_1 or 0_2), or introduced by reusing one or more field bits of one or more existing DCI fields in the corresponding DCI format (e.g., 0_1 or 0_2).

[0371] In addition, the presence of the x-bit indicator in the corresponding DCI format may be configured / configurable by RRC. When / if the x-bit indicator as described above in the present disclosure is not configured or does not exist or is missing in the corresponding DCI format, x=0, i.e., the corresponding DCI indicator field is 0 bits; otherwise, when / if the x-bit indicator as described above in the present disclosure is configured or exists, x≥1. For example, as described herein, the x-bit indicator may correspond to the SRS resource set indicator in DCI 0_1 / 0_2.

[0372] In one example, x=1. For this case, when / if the 1-bit indicator is set to "0" (or "1"), the UE may use the reference signal provided / indicated in the first indicated TCI state / TCI state pair as a reference for determining the UL TX spatial filter for a PUSCH, which is, for example, scheduled by an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) and associated with an SRS resource set. When / if the 1-bit indicator is set to "1" (or "0"), the UE may use the reference signal provided / indicated in the second indicated TCI state / TCI state pair as a reference for determining the UL TX spatial filter for a PUSCH, which is, for example, scheduled by an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) and associated with an SRS resource set.

[0373] In another example, x=2. For this case, when / if the 2-bit indicator (or SRS resource set indicator) is set to "00" (or "01", "10" or "11"), the UE can use the reference signal provided / indicated in the first indicated TCI state / TCI state pair as a reference for determining the UL TX spatial filter of the PUSCH, which is scheduled by the uplink DCI (e.g., DCI format 0_1 ​​or 0_2) and is associated with the SRS resource set; when / if the 2-bit indicator (or SRS resource set indicator) is set to "01" (or "00" or "10" or "11"), the UE can use the reference signal provided / indicated in the second indicated TCI state / TCI state pair as a reference for determining the UL TX spatial filter of the PUSCH. A reference to a TX spatial filter, the PUSCH being scheduled by an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) and associated with an SRS resource set; when / if the 2-bit indicator (or SRS resource set indicator) is set to "10" (or "00" or "01" or "11"), the UE may use the reference signal provided / indicated in the first indicated TCI state / TCI state pair and the reference signal provided / indicated in the second indicated TCI state / TCI state pair, respectively, as a reference for determining the UL A reference to the UL TX spatial filter to simultaneously transmit PUSCHs, which are, for example, scheduled by uplink DCI (e.g., DCI format 0_1 ​​or 0_2) and associated with an SRS resource set; and when / if the 2-bit indicator (or SRS resource set indicator) is set to "11" (or "00" or "01" or "10"), the UE can use the reference signal provided / indicated in the second indicated TCI state / TCI state pair and the reference signal provided / indicated in the first indicated TCI state / TCI state pair as a reference for determining the UL TX spatial filter to simultaneously transmit PUSCHs, which are, for example, scheduled by uplink DCI (e.g., DCI format 0_1 ​​or 0_2) and associated with an SRS resource set.

[0374] As described above / in this document in the present disclosure, when / if one or more of the following conditions for associating / mapping UL DCI (and therefore the x-bit indicator indicated / provided / carried therein) and beam indication DCI (and therefore the unified TCI state / TCI state pair indicated / provided / carried therein) are implemented / satisfied, the UE may use the x-bit DCI indicator field in the uplink DCI (e.g., DCI format 0_1 / 0_2) that schedules / activates the PUSCH specified in this document in the present disclosure to determine one or more of the unified TCI state / TCI state pair indicated in the beam indication DCI (e.g., DCI format 1_1 / 1_2 with or without DL allocation) in order to determine the UL TX filter for the PUSCH.

[0375] In one example, when / if the UL DCI (and therefore the x-bit indicator indicated / provided / carried therein) and the beam indication DCI (and therefore the unified TCI state / TCI state pair indicated / provided / carried therein) are received in the same time slot. For example, in the same time slot, the reception time of the UL DCI may be later than (or earlier than) the beam indication DCI. For another example, in the same time slot, the UL DCI may be received in the same OFDM symbol as the beam indication DCI.

[0376] In another example, when / if the UL DCI (and therefore the x-bit indicator indicated / provided / carried therein) and the beam indication DCI (and therefore the unified TCI state / TCI state pair indicated / provided / carried therein) are received within a time window. The time window or the value of the time window may be fixed in the system specification. Alternatively, the network may indicate / configure / provide the time window or the value of the time window to the UE, for example via high-level RRC signaling / parameters and / or MAC CE commands and / or L1 signaling based on dynamic DCI. For example, in / within the time window, the reception time of the UL DCI may be later than (or earlier than) the beam indication DCI. For another example, in / within the time window, the UL DCI may be received in the same OFDM symbol as the beam indication DCI.

[0377] In yet another example, when / if the UL DCI (and therefore the x-bit indicator indicated / provided / carried therein) is received later than (or earlier than) T_1 than the beam indication DCI (and therefore the unified TCI state / TCI state pair indicated / provided / carried therein). For example, T_1 may be an OFDM symbol, a time slot, a mini-time slot, etc. The value of T1 may be fixed in the system specification. Alternatively, the network may indicate / configure / provide the value of T1 to the UE, for example via higher-layer RRC signaling / parameters and / or MAC CE commands and / or L1 signaling based on dynamic DCI.

[0378] In yet another example, when / if the UL DCI (and therefore the x-bit indicator indicated / provided / carried therein) is received T_2 later (or earlier) than the time when the TCI state / TCI state pair indicated in the beam indication DCI applies or takes effect. The time when the TCI state / TCI state pair indicated in the beam indication DCI applies or takes effect is from the first time slot of at least BeamAppTime_r17 symbols after the last symbol of the PUCCH with HARQ-ACK information, which HARQ-ACK information corresponds to the beam indication DCI carrying the TCI state indication and no DL allocation, or corresponds to the PDSCH scheduled / being scheduled by the beam indication DCI carrying the TCI state indication, and / or when / if the indicated TCI state is different from some of the previously indicated ones. For example, T_2 can be an OFDM symbol, a time slot, a mini-time slot, etc. The value of T2 can be fixed in the system specification, for example, T2=0. Alternatively, the network may indicate / configure / provide the value of T2 to the UE, for example via higher layer RRC signaling / parameters and / or MACCE commands and / or L1 signaling based on dynamic DCI.

[0379] In yet another example, when / if the indicated TCI state indicated / provided in the beam indication DCI is different from some previously indicated, the UE does not expect or will not use the x-bit DCI indication field in the uplink DCI received at a time before the beam indication DCI (used to determine the unified TCI state / TCI state pair indicated in the beam indication DCI) to determine the UL TX filter for the PUSCH. For this case, according to one or more design examples specified herein of the present disclosure, the UE may only use the x-bit DCI indicator field in the uplink DCI received at a later time than the beam indication DCI (used to determine the unified TCI state / TCI state pair indicated in the beam indication DCI) to determine the UL TX filter for the PUSCH.

[0380] In yet another example, when / if the UL DCI (and therefore the x-bit indicator indicated / provided / carried therein) and the beam indication DCI (and therefore the unified TCI state / TCI state pair indicated / provided / carried therein) have the same identifier (ID) indicated / provided therein. In the UL DCI (e.g., DCI format 0_1 / 0_2) and / or the beam indication DCI (e.g., DCI format 1_1 / 1_2), the ID field may be a new DCI field dedicated to associating / mapping the UL DCI and the beam indication DCI. Alternatively, the ID may be implemented by reusing one or more field bits of one or more existing DCI fields in the corresponding UL DCI format (e.g., 0_1 / 0_2) or the corresponding DL (beam indication) DCI format (e.g., 1_1 / 1_2).

[0381] In yet another example, when / if UL DCI (and therefore the x-bit indicator indicated / provided / carried therein) and beam indication DCI (and therefore the unified TCI state / TCI state pair indicated / provided / carried therein) are received in a CORESET associated / configured with the same entity ID, where the entity ID may be a CORESET ID / index, a CORESET pool index / CORESETPoolIndex, a CORESETGroupIndex / CORESET group index, an RS set ID / index, a PCI, a PCI index, etc.

[0382] In addition, when / if the present disclosure specifies that the x-bit indicator is not configured / existent or x=0 or the corresponding SRS resource set indicator in DCI 0_1 / 0_2 is not configured / existent.

[0383] In one example, the UE may use a reference signal provided / indicated in a first indicated TCI state / TCI state pair as a reference for determining a UL TX spatial filter for a PUSCH, for example, scheduled by an uplink DCI (eg, DCI format 0_1 ​​or 0_2).

[0384] In another example, the UE may use the reference signal provided / indicated in the second indicated TCI state / TCI state pair as a reference for determining the UL TX spatial filter for a PUSCH, which is scheduled by, for example, an uplink DCI (e.g., DCI format 0_1 ​​or 0_2).

[0385] In yet another example, the UE may use a reference signal provided / indicated in a first indicated TCI state / TCI state pair and a reference signal provided / indicated in a second indicated TCI state / TCI state pair as a reference for determining a UL TX spatial filter to simultaneously transmit PUSCHs, which are scheduled, for example, by uplink DCI (e.g., DCI format 0_1 ​​or 0_2).

[0386] In another example, the UE may use the reference signal provided / indicated in the second indicated TCI state / TCI state pair and the reference signal provided / indicated in the first indicated TCI state / TCI state pair as a reference for determining the UL TX spatial filter to simultaneously transmit PUSCHs, which are scheduled by uplink DCI (e.g., DCI format 0_1 ​​or 0_2), for example.

[0387] In yet another example, the UE may be configured / indicated / provided by the network, e.g., via high-layer RRC signaling / parameters, a y-bit indicator, where y≥1, e.g., y=1 or y=2. For y=1, when / if the 1-bit indicator is set to "0" (or "1"), the UE may use the reference signal provided / indicated in the first indicated TCI state / TCI state pair as a reference for determining the UL TX spatial filter for a PUSCH, e.g., scheduled by an uplink DCI (e.g., DCI format 0_1 ​​or 0_2), and when / if the 1-bit indicator is set to "1" (or "0"), the UE may use the reference signal provided / indicated in the second indicated TCI state / TCI state pair as a reference for determining the UL TX spatial filter for a PUSCH, e.g., scheduled by an uplink DCI (e.g., DCI format 0_1 ​​or 0_2).

[0388] In another example, the UE may be configured / indicated / provided by the network, for example, via high-level RRC signaling / parameters, a y-bit indicator, where y≥1, for example, y=1 or y=2. For y=2, when / if the 2-bit indicator is set to "00" (or "01", "10" or "11"), the UE may use the reference signal provided / indicated in the first indicated TCI state / TCI state pair as a reference for determining the UL TX spatial filter of the PUSCH, which is, for example, scheduled by an uplink DCI (e.g., DCI format 0_1 ​​or 0_2); when / if the 2-bit indicator is set to "01" (or "00" or "10" or "11"), the UE may use the reference signal provided / indicated in the second indicated TCI state / TCI state pair as a reference for determining the UL TX spatial filter of the PUSCH. a reference to a TX spatial filter for a PUSCH, which is scheduled by an uplink DCI (e.g., DCI format 0_1 ​​or 0_2); when / if the 2-bit indicator is set to "10" (or "00" or "01" or "11"), the UE may use the reference signal provided / indicated in the first indicated TCI state / TCI state pair and the reference signal provided / indicated in the second indicated TCI state / TCI state pair as a reference for determining the UL TX spatial filter to simultaneously transmit PUSCHs, which are scheduled by an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) and are associated with an SRS resource set; and when / if the 2-bit indicator is set to "11" (or "00" or "01" or "10"), the UE may use the reference signal provided / indicated in the second indicated TCI state / TCI state pair and the reference signal provided / indicated in the first indicated TCI state / TCI state pair as a reference for determining the UL TX spatial filter. A reference to the TX spatial filter to simultaneously transmit PUSCHs, which are scheduled by uplink DCI (e.g., DCI format 0_1 ​​or 0_2), for example.

[0389] In yet another example, the UE may use a reference signal provided / indicated in a TCI state / TCI state pair indicated in a TCI field of a beam indication DCI (e.g., via one or more TCI code points) as a reference for determining a UL TX spatial filter for a PUSCH, e.g., scheduled by an uplink DCI (e.g., DCI format 0_1 ​​or 0_2).

[0390] In yet another example, the UE may use a reference signal provided / indicated in a TCI state / TCI state pair indicated in the TCI field of a beam indication DCI (e.g., via one or more TCI code points), which is associated with a PDCCH / DCI / CORESET that schedules / activates a PUSCH, as a reference for determining the UL TX spatial filter for the PUSCH.

[0391] The UE may be provided / configured / indicated by the network, for example, via high-level RRC signaling and / or MAC CE commands and / or L1 signaling based on dynamic DCI, two SRS resource sets (a first SRS resource set and a second SRS resource set), each provided by an SRS-ResourceSet, wherein each SRS resource set may include / contain one or more SRS resources and may be codebook-based or non-codebook-based. The two SRS resource sets may be (one-to-one) associated / mapped to the two indicated TCI states / TCI state pairs specified in this disclosure.

[0392] In one example, the association / mapping between two configured SRS resource sets and two indicated TCI states / TCI state pairs is fixed in the system specification. For example, a first configured SRS resource set (codebook-based or non-codebook-based) can be associated / mapped to a first (or second) indicated TCI state / TCI state pair, and a second configured SRS resource set (codebook-based or non-codebook-based) can be associated / mapped to a second (or first) indicated TCI state / TCI state pair.

[0393] In another example, the network may indicate / provide / configure the mapping / association between the two configured SRS resource sets and the two indicated unified TCI states / TCI state pairs to the UE, for example via high-level RRC signaling / parameters and / or MAC CE commands and / or L1 signaling based on dynamic DCI.

[0394] For the first configured SRS resource set specified herein by the present disclosure (eg, provided by SRS-ResourceSet0), the following examples may be provided.

[0395] In one example, when / if the UE is provided / configured with "followUnifiedTCIState" for the first configured SRS resource set or the first configured SRS resource set is configured / associated with "followUnifiedTCIState" by the network, for example, via high-layer RRC signaling and / or MAC CE command and / or L1 signaling based on dynamic DCI, the UE may determine the indicated TCI state for the first SRS resource set in accordance with one or more design examples (e.g., those specified in the examples) specified herein of the present disclosure. The UE may then use the reference signal provided / indicated in the indicated TCI state associated with the first configured SRS resource set as a reference for determining the UL TX spatial filter for a PUSCH, which is, for example, scheduled by an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) and associated with the first configured SRS resource set. When / if the network does not provide / configure the "followUnifiedTCIState" for the first configured SRS resource set to the UE, for example via high-level RRC signaling and / or MAC CE command and / or L1 signaling based on dynamic DCI, or the first configured SRS resource set is not configured / associated with the "followUnifiedTCIState", the UE can follow one or more design examples specified herein of the present disclosure (e.g., the x-bit indicator specified in the example, where now, the x-bit indicator is associated / configured with the first SRS resource set) to determine: the indicated TCI state, and therefore, the corresponding reference signal / reference for determining the UL TX spatial filter for the PUSCH, which is scheduled by DCI format 0_1 / 0_2 and associated with the first SRS resource set.

[0396] In another example, when / if the x-bit indicator specified in this disclosure (e.g., associated with / configured for the first SRS resource set) is not configured / present or x=0 or the corresponding SRS resource set indicator in DCI 0_1 / 0_2 is not configured / present, the UE may determine the indicated TCI state for the first SRS resource set following one or more design examples specified in this disclosure. The UE may then use the reference signal provided / indicated in the indicated TCI state associated with the first configured SRS resource set as a reference for determining the UL TX spatial filter for a PUSCH, for example, scheduled by an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) and associated with the first configured SRS resource set. When / if the x-bit indicator specified in the present disclosure (e.g., associated with / configured for the second SRS resource set) is configured / present and / or set to a valid value (such as x=1 or x=2) or the corresponding SRS resource set indicator in DCI 0_1 / 0_2 is configured / present, the UE can follow one or more design examples specified in the present disclosure (e.g., the x-bit indicator, where now, the x-bit indicator is associated with / configured for the first SRS resource set) to determine: the indicated TCI state, and therefore, the corresponding reference signal / reference for determining the UL TX spatial filter for the PUSCH, which is scheduled by DCI format 0_1 / 0_2 and associated with the first SRS resource set.

[0397] For the SRS resource set of the second configuration specified herein by the present disclosure (eg, provided by SRS-ResourceSet1), the following examples may be provided.

[0398] In one example, when / if the network provides / configures the "followUnifiedTCIState" for the second configured SRS resource set for the UE, for example, via high-layer RRC signaling and / or MAC CE command and / or L1 signaling based on dynamic DCI, or the second configured SRS resource set is configured / associated with the "followUnifiedTCIState", the UE may determine the indicated TCI state for the second SRS resource set in accordance with one or more design examples specified herein of the present disclosure. The UE may then use the reference signal provided / indicated in the indicated TCI state associated with the second configured SRS resource set as a reference for determining the UL TX spatial filter for a PUSCH, which is, for example, scheduled by an uplink DCI (e.g., DCI format 0_1 ​​or 0_2) and associated with the second configured SRS resource set. When / if the network does not provide / configure the "followUnifiedTCIState" for the second configured SRS resource set to the UE, for example via high-level RRC signaling and / or MAC CE command and / or L1 signaling based on dynamic DCI, or the second configured SRS resource set is not configured / associated with the "followUnifiedTCIState", the UE can follow one or more design examples specified herein of the present disclosure (e.g., an x-bit indicator, where now, the x-bit indicator is associated / configured with the second SRS resource set) to determine: the indicated TCI state, and therefore, the corresponding reference signal / reference for determining the UL TX spatial filter for the PUSCH, which is scheduled by DCI format 0_1 / 0_2 and associated with the second SRS resource set.

[0399] In another example, when / if the x-bit indicator specified in this disclosure (e.g., associated with / configured for the second SRS resource set) is not configured / present or x=0 or the corresponding SRS resource set indicator in DCI 0_1 / 0_2 is not configured / present, the UE may determine the indicated TCI state for the second SRS resource set following one or more design examples specified in this disclosure. The UE may then use the reference signal provided / indicated in the indicated TCI state associated with the second configured SRS resource set as a reference for determining the UL TX spatial filter for the PUSCH, which is scheduled by the uplink DCI (e.g., DCI format 0_1 ​​or 0_2) and associated with the second configured SRS resource set.

[0400] When / if the x-bit indicator specified in the present disclosure (e.g., associated with / configured for the second SRS resource set) is configured / present and / or set to a valid value (such as x=1 or x=2) or the corresponding SRS resource set indicator in DCI 0_1 / 0_2 is configured / present, the UE can follow one or more design examples specified in the present disclosure (e.g., the x-bit indicator, where now, the x-bit indicator is associated with / configured for the second SRS resource set) to determine: the indicated TCI state, and therefore, the corresponding reference signal / reference for determining the UL TX spatial filter for the PUSCH, which is scheduled by DCI format 0_1 / 0_2 and associated with the second SRS resource set.

[0401] In Release 17, a unified Transmission Configuration Indication (TCI) framework is specified for single TRP operation, where a common beam can be indicated for all UE-dedicated control and / or data channels. In order to extend the Release 17 unified TCI framework to multi-TRP operation, various design aspects need to be specified, such as means of configuring one or more TCI fields or TCI status code points to indicate beams for multiple TRPs. In addition, since multiple multi-TRP operation modes such as PDCCH / PDSCH / PUCCH / PUSCH repetition are supported / specified in Release 16 / 17, it is necessary to specify a method for dynamically switching between different multi-TRP operation modes via beam indication, or a method for dynamically switching between one or more multi-TRP operation modes and a single TRP operation mode.

[0402] The present disclosure provides various design aspects related to DCI-based beam indication for multi-TRP operation. Specifically, the present disclosure specifies / provides detailed configuration methods (e.g., via reusing one or more existing DCI fields) of TCI states, TCI fields, or TCI state code points in uplink DCI (such as DCI formats 0_0, 0_1, or 0_2) and their association with different TRPs in a multi-TRP system. The present disclosure further specifies various methods for dynamically switching between different multi-TRP operation modes or between one or more multi-TRP operation modes and a single TRP operation mode via beam / TCI state indication.

[0403] 9A illustrates an example of an indication of first and second TCI status code points 900 according to an embodiment of the present disclosure. The embodiment of the indication of first and second TCI status code points 900 shown in FIG. 9A is for illustration only.

[0404] 9B illustrates another example of an indication of first and second TCI status code points 950 according to an embodiment of the present disclosure. The embodiment of the indication of first and second TCI status code points 950 shown in FIG. 9B is for illustration only.

[0405] As previously described, one or more of the Nc≥1 (eg, 8, 16, 32, or 64) TCI state code points activated by the MAC CE corresponds to a TCI state code point.

[0406] In one example, two "transmission configuration indication" fields may be indicated / configured in an uplink DCI (such as DCI format 0_0, 0_1, or 0_2). Specifically, a first TCI field may be configured / indicated / included in an uplink DCI (such as DCI format 0_0, 0_1, or 0_2) to indicate a first TCI state code point from a determined Nc≥1 (e.g., 8, 16, 32, or 64) activated TCI state code points, and a second TCI field may be configured / indicated / included in an uplink DCI (such as DCI format 0_0, 0_1, or 0_2) to indicate a second TCI state code point from a determined Nc≥1 (e.g., 8, 16, 32, or 64) activated TCI state code points.

[0407] For example, the first TCI field may be provided by "transmission configuration indication" or "transmission configuration indication 0" or "transmission configuration indication 1" in the corresponding DCI format, and the second TCI field may be provided by "transmission configuration indication" or "transmission configuration indication 1" or "transmission configuration indication 2" in the corresponding DCI format. For another example, the first and second TCI fields may be based on the order in which they appear in the corresponding DCI format description in the 3GPP standard specification TS 38.212.

[0408] For another example, a "transmission configuration indication" field may be indicated / configured / included in an uplink DCI (such as DCI format 0_0, 0_1, or 0_2) to indicate a first TCI state code point from a determined Nc≥1 (e.g., 8, 16, 32, or 64) activated TCI state code points. In addition, one or more reserved fields in DCI format 0_0, 0_1, or 0_2 may be reused to indicate a second TCI state code point from a determined Nc≥1 (e.g., 8, 16, 32, or 64) activated TCI state code point.

[0409] In Figure 9A, an example of indicating the first and second TCI state code points in DCI format 0_0, 0_1 or 0_2 is given. For DCI format 0_0, one or more DCI fields may be reserved for beam indication, which may correspond to one or more of the following: "frequency domain resource allocation" field, "time domain resource allocation" field, "frequency hopping flag" field, "modulation and coding scheme" field, "new data indicator" field, "redundancy version" field, "HARQ process number" field, "TPC command for scheduled PUSCH" field, "ChannelAccess-CPext" field, "filling bit" field, and "UL / SUL indicator" field. For DCI format 0_1, one or more DCI fields may be reserved for beam indication, which may correspond to one or more of the following: "HARQ-ACK bitmap" field, "TPC command for scheduled PUSCH" field, "UL / SUL indicator" field, "Frequency domain resource allocation" field, "Time domain resource allocation" field, "Frequency hopping flag" field, "Modulation and coding scheme" field, "New data indicator" field, "Redundancy version" field, "HARQ process number" field, "First downlink allocation index" field, "Second downlink allocation index" field, "TPC command for scheduled PUSCH" field, "Second TPC command for scheduled PUSCH" field, "SRS resource set indicator" field, "SRS resource indicator field, "Second SRS resource indicator" field, "Pre- "Coding information and number of layers" field, "Second precoding information" field, "Antenna port" field, "SRS request" field, "SRS offset indicator" field, "CSI request" field, "CBG transmission information (CBGTI)" field, "PTRS-DMRS association" field, "Second PTRS-DMRS association" field, "beta_offset indicator" field, "DMRS sequence initialization" field, "UL-SCH indicator" field, "ChannelAccess-CPext-CAPC" field, "Open-loop power control parameter set indication" field, "Priority indicator" field, "Invalid symbol mode indicator" field, "Minimum applic...

Claims

1. A user equipment UE in a wireless communication system, the UE include: The transceiver is configured as: receiving radio resource control (RRC) signaling including parameters indicating a first set of transmission configuration indication (TCI) states and a second set of TCI states; receiving a first indicator and a TCI status update in first downlink control information (DCI); as well as receiving a second indicator in a second DCI; as well as at least one processor coupled to the transceiver and configured to: identifying a first TCI state from the first set of TCI states and identifying a second TCI state from the second set of TCI states; determining, based on the first indicator, whether the TCI state update belongs to the first set of TCI states or the second set of TCI states; as well as Identifying, based on the second indicator, that the first TCI state or the second TCI state is used to receive a physical downlink shared channel PDSCH or to transmit a physical uplink shared channel PUSCH.

2. The UE according to claim 1, in: When the first DCI is an uplink UL DCI, the TCI status update is indicated by a field in the first DCI, and In the first DCI, the field is (1) a dedicated TCI field or (2) reused using one or more bits of one or more existing fields.

3. The UE according to claim 1, in: The first indicator is a 1-bit indicator; When the first indicator is set to "0", the processor is further configured to apply the TCI state update for the first TCI state; as well as When the first indicator is set to "1", the processor is further configured to apply the TCI state update for the second TCI state.

4. The UE according to claim 1, in: The second indicator is a 2-bit indicator; When the second DCI is an uplink UL DCI, the second indicator is a sounding reference signal SRS resource set indicator; When the second indicator is set to "00", the first TCI state is used to receive the PDSCH; When the second indicator is set to "01", the second TCI state is used to receive the PDSCH; When the second indicator is set to "10", the first TCI state is used to receive the PDSCH, and the second TCI state is used to receive a second PDSCH; When the second indicator is set to "11", the first TCI state is used to receive the second PDSCH, and the second TCI state is used to receive the PDSCH; When a first code division multiplexing (CDM) group and a second CDM group are configured, the processor is further configured to identify: The demodulation reference signal DM-RS of the PDSCH is associated with the first CDM group, and The DM-RS of the second PDSCH is associated with the second CDM group; and When the high-level parameter repetitionScheme is configured, the processor is also configured to recognize: The PDSCH corresponds to a first PDSCH transmission opportunity, and The second PDSCH corresponds to a second PDSCH transmission opportunity.

5. The UE according to claim 1, in: The second indicator is a 2-bit indicator; When the second DCI is an uplink UL DCI, the second indicator is a sounding reference signal SRS resource set indicator; When the second indicator is set to "00", the first TCI state is used to transmit the PUSCH; When the second indicator is set to "01", the second TCI state is used to transmit the PUSCH; when the second indicator is set to "10", the first TCI state is used to transmit the PUSCH, and the second TCI state is used to transmit a second PUSCH; when the second indicator is set to "11", the first TCI state is used to transmit the second PUSCH, and the second TCI state is used to transmit the PUSCH; When a first sounding reference signal SRS resource set and a second SRS resource set are configured, the processor is further configured to identify: The PUSCH is associated with the first SRS resource set; and The second PUSCH is associated with the second SRS resource set.

6. The UE according to claim 1, in: The transceiver is further configured to: receiving a first identifier in the first DCI; and receiving a second identifier in the second DCI; as well as When the first identifier and the second identifier are the same, the processor is further configured to identify, based on the second indicator in the second DCI, which of the first TCI state and the second TCI state in the first DCI is used to receive the PDSCH and transmit the PUSCH.

7. A method performed by a user equipment UE in a wireless communication system, the method include: receiving radio resource control (RRC) signaling including parameters indicating a first set of transmission configuration indication (TCI) states and a second set of TCI states; receiving a first indicator and a TCI status update in first downlink control information (DCI); receiving a second indicator in a second DCI; identifying a first TCI state from the first set of TCI states and identifying a second TCI state from the second set of TCI states; determining, based on the first indicator, whether the TCI state update belongs to the first set of TCI states or the second set of TCI states; as well as Identifying, based on the second indicator, that the first TCI state or the second TCI state is used to receive a physical downlink shared channel PDSCH or to transmit a physical uplink shared channel PUSCH.

8. The method according to claim 7, in: When the first DCI is an uplink UL DCI, the TCI status update is indicated by a field in the first DCI, and In the first DCI, the field is (1) a dedicated TCI field or (2) reused using one or more bits of one or more existing fields.

9. The method according to claim 7, in: The first indicator is a 1-bit indicator; as well as The method further comprises: When the first indicator is set to "0", applying the TCI state update for the first TCI state; as well as When the first indicator is set to "1", the TCI state update is applied to the second TCI state.

10. The method according to claim 7, in: The second indicator is a 2-bit indicator; When the second DCI is an uplink UL DCI, the second indicator is a sounding reference signal SRS resource set indicator; When the second indicator is set to "00", the first TCI state is used to receive the PDSCH; When the second indicator is set to "01", the second TCI state is used to receive the PDSCH; When the second indicator is set to "10", the first TCI state is used to receive the PDSCH, and the second TCI state is used to receive a second PDSCH; When the second indicator is set to "11", the first TCI state is used to receive the second PDSCH, and the second TCI state is used to receive the PDSCH; When the first code division multiplexing CDM group and the second CDM group are configured, identify: The demodulation reference signal DM-RS of the PDSCH is associated with the first CDM group, and The DM-RS of the second PDSCH is associated with the second CDM group; and When the high-level parameter repetitionScheme is configured, identify: The PDSCH corresponds to a first PDSCH transmission opportunity, and The second PDSCH corresponds to a second PDSCH transmission opportunity.

11. The method according to claim 7, in: The second indicator is a 2-bit indicator; When the second DCI is an uplink UL DCI, the second indicator is a sounding reference signal SRS resource set indicator; When the second indicator is set to "00", the first TCI state is used to transmit the PUSCH; When the second indicator is set to "01", the second TCI state is used to transmit the PUSCH; when the second indicator is set to "10", the first TCI state is used to transmit the PUSCH, and the second TCI state is used to transmit a second PUSCH; when the second indicator is set to "11", the first TCI state is used to transmit the second PUSCH, and the second TCI state is used to transmit the PUSCH; When a first sounding reference signal SRS resource set and a second SRS resource set are configured, identifying: The PUSCH is associated with the first SRS resource set; and The second PUSCH is associated with the second SRS resource set.

12. A base station BS in a wireless communication system, the BS include: The transceiver is configured as: transmitting a radio resource control (RRC) signaling including parameters indicating a first set of transmission configuration indication (TCI) states and a second set of TCI states; transmitting a first indicator and a TCI status update in a first downlink control information (DCI); as well as transmitting a second indicator in a second DCI, wherein the first indicator indicates whether the TCI state update belongs to the first group of TCI states or the second group of TCI states; and The second indicator indicates whether a first TCI state from the first set of TCI states or a second TCI state from the second set of TCI states is used for a physical downlink shared channel PDSCH or for a physical uplink shared channel PUSCH.

13. The BS according to claim 12, in: When the first DCI is an uplink UL DCI, the TCI status update is indicated by a field in the first DCI, and In the first DCI, the field is (1) a dedicated TCI field or (2) reused using one or more bits of one or more existing fields.

14. The BS according to claim 12, in: The first indicator is a 1-bit indicator; When the first indicator is set to "0", the TCI state update is for the first TCI state; and When the first indicator is set to "1", the TCI state update is used for the second TCI state.

15. The BS according to claim 12, in: The second indicator is a 2-bit indicator; When the second DCI is an uplink UL DCI, the second indicator is a sounding reference signal SRS resource set indicator; When the second indicator is set to "00", the first TCI state is used for the PDSCH; When the second indicator is set to "01", the second TCI state is used for the PDSCH; When the second indicator is set to "10", the first TCI state is used for the PDSCH, and the second TCI state is used for a second PDSCH; When the second indicator is set to "11", the first TCI state is used for the second PDSCH, and the second TCI state is used for the PDSCH; When a first code division multiplexing CDM group and a second CDM group are configured, a demodulation reference signal DM-RS of the PDSCH is associated with the first CDM group, and a DM-RS of the second PDSCH is associated with the second CDM group; as well as When the higher layer parameter repetitionScheme is configured, the PDSCH corresponds to a first PDSCH transmission opportunity, and the second PDSCH corresponds to a second PDSCH transmission opportunity.

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