CSI codebook parameters and CSI reporting for coherent joint transmission

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. An apparatus and method for channel state information (CSI) codebook parameters and CSI reporting for coherent joint transmission. A method performed by a user equipment (UE) includes receiving information about (i) a channel state information (CSI) reference signal (CSI-RS) report associated with NTRP > = 1 and (ii) an NL > = 1 value of # imgabs0 #. Each of the N1 values of # imgabs1 # belongs to a table comprising NTRP, # imgabs2 # and an associated index, and # imgabs3 # is a digital tuple of a spatial domain (SD) basis vector Lr associated with CSI-RS resource r = 1,..., NTRP. The method further includes determining a CSI report based on the information, and transmitting the determined CSI report.

Description

Technical Field

[0001] The present disclosure generally relates to wireless communication systems, and more particularly, the present disclosure relates to apparatuses and methods for channel state information (CSI) codebook parameters and CSI reporting for coherent joint transmission. Background Art

[0002] Wireless communication is one of the most successful innovations in modern history. Recently, the number of users of wireless communication services has exceeded five billion and continues to grow rapidly. Due to the increasing popularity of smart phones and other mobile data devices (such as tablets, "notepad" computers, netbooks, e-book readers, and machine-type devices) among consumers and enterprises, the demand for wireless data services is increasing rapidly. To meet the high growth of mobile data services and support new applications and deployments, it is crucial to improve radio interface efficiency and coverage. To meet the increasing demand for wireless data services since the deployment of 4G communication systems and to enable various vertical applications, fifth-generation (5G) communication systems have been developed and are being deployed.

[0003] 5G mobile communication technology defines a wide frequency band, enabling high transmission rates and new services, and can be implemented not only in frequency bands "below 6 GHz" (such as 3.5 GHz), but also in "above 6 GHz" frequency bands called millimeter waves (including 28 GHz and 39 GHz). In addition, the implementation of sixth-generation (6G) mobile communication technology (referred to as a beyond 5G system) in the terahertz frequency band (e.g., 95 GHz to 3 THz frequency band) has been considered in order to achieve a transmission rate 50 times faster than 5G mobile communication technology and an ultra-low latency of one-tenth of 5G mobile communication technology.

[0004] At the beginning of the development of 5G mobile communication technology, in order to support services and meet the performance requirements of enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), and massive machine-type communication (mMTC), there have been ongoing standardizations regarding beamforming and massive MIMO for reducing radio wave path loss in millimeter waves and increasing radio wave transmission distance, supporting digital technologies for effectively utilizing millimeter wave resources (e.g., operating multiple subcarrier spacings) and dynamic operation of time slot formats, initial access technologies for supporting multi-beam transmission and broadband, the definition and operation of bandwidth parts (BWPs), new channel decoding methods such as LDPC (low-density parity-check) codes for large data transmission and polar codes for highly reliable transmission of control information, L2 preprocessing, and network slicing for providing dedicated networks dedicated to specific services.

[0005] Currently, in view of the services that 5G mobile communication technology will support, discussions are underway regarding the improvement and performance enhancement of the initial 5G mobile communication technology, and there already exists physical layer standardization for various technologies, such as V2X (Vehicle-to-Everything) for assisting autonomous vehicle driving determination based on information about the vehicle's position and status sent by the vehicle and for enhancing user convenience, NR-U (New Radio Unlicensed) aiming to comply with various regulatory requirements in the unlicensed band, NRUE power saving, system operation of (NTN) Non-Terrestrial Network, which is UE-satellite direct communication for providing coverage and positioning in areas where communication with the terrestrial network is unavailable.

[0006] In addition, standardization has been ongoing for the air interface architecture / protocols of various technologies, such as Industrial Internet of Things (IIoT) for supporting new services through interoperability and integration with other industries, IAB (Integrated Access and Backhaul) for providing nodes for network service area expansion by supporting wireless backhaul links and access links in an integrated manner, mobility enhancements including conditional handover and DAPS (Dual Active Protocol Stack) handover, and two-step random access (two-step RACH for NR) for simplifying the random access process. Standardization has also been ongoing in terms of system architecture / services, involving the 5G baseline architecture for combining network function virtualization (NFV) and software-defined networking (SDN) technologies (e.g., service-based architecture or service-based interface), and mobile edge computing (MEC) for receiving services based on UE location.

[0007] With the commercialization of the 5G mobile communication system, exponentially growing connected devices will be connected to the communication network. Therefore, the functions and performance of the 5G mobile communication system and the integrated operation of connected devices are expected to be necessary. To this end, new research related to extended reality (XR) is planned to effectively support AR (Augmented Reality), VR (Virtual Reality), MR (Mixed Reality), etc., by leveraging artificial intelligence (AI) and machine learning (ML), AI service support, metaverse service support, and drone communication to improve 5G performance and reduce complexity.

[0008] Furthermore, this development of 5G mobile communication systems will serve as a basis not only for the development of new waveforms for providing terahertz band coverage for 6G mobile communication technologies, multi-antenna transmission technologies such as full-dimensional MIMO (FD-MIMO), array antennas, and massive antennas, metamaterial-based lenses and antennas for improving terahertz band signal coverage, high-dimensional spatial multiplexing technologies using OAM (orbital angular momentum), and RIS (reconfigurable intelligent surfaces), but also for the development of full-duplex technologies for improving the frequency efficiency of 6G mobile communication technologies and enhancing system networks, artificial intelligence-based communication technologies for achieving system optimization by leveraging satellites and AI (artificial intelligence) from the design phase and internalizing end-to-end artificial intelligence support functions, and next-generation distributed computing technologies for implementing services with complexities exceeding the UE operation ability limit by utilizing ultra-high-performance communication and computing resources.

[0009] The above information is provided only as background information to assist in understanding the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above is applicable to the prior art of the present disclosure. Summary of the Invention

[0010] Technical Problem

[0011] The present disclosure can provide an apparatus and method for channel state information (CSI) codebook parameters and CSI reporting for coherent joint transmission.

[0012] Solution to the Problem

[0013] The present disclosure relates to CSI codebook parameters and CSI reporting for coherent joint transmission.

[0014] In an embodiment, a user equipment (UE) is provided. The UE includes a transceiver configured to receive information regarding (i) a CSI report associated with N TRP ≥1 CSI reference signal (CSI-RS) resources and (ii) N L ≥1 values. Each of the N L values belongs to a table including N TRP , and associated indices, and is a digital tuple of spatial domain (SD) basis vectors L TRP associated with the CSI-RS resources r = 1,..., N r . The UE further includes a processor operatively coupled to the transceiver. The processor is configured to determine a CSI report based on the information. The transceiver is further configured to transmit the determined CSI report.

[0015] In another embodiment, a base station (BS) is provided. The BS includes a transceiver configured to transmit (i) a CSI report associated with N TRP ≥ 1 CSI-RS resources and (ii) information about N L ≥ 1 values. Each of the N L values belongs to a table including N TRP , and an associated index, and is a digital tuple of the spatial domain (SD) basis vectors L TRP associated with the CSI-RS resources r = 1, …, N r . The transceiver is further configured to receive a CSI report based on the information.

[0016] In another embodiment, a method performed by a UE is provided. The method includes receiving (i) a CSI report associated with N TRP ≥ 1 CSI-RS resources and (ii) information about N L ≥ 1 values. Each of the N L values belongs to a table including N TRP , and an associated index, and is a digital tuple of the spatial domain (SD) basis vectors L TRP associated with the CSI-RS resources r = 1, …, N r . The method further includes determining a CSI report based on the information and transmitting the determined CSI report.

[0017] Based on the following drawings, description, and claims, other technical features may be apparent to those skilled in the art.

[0018] Before proceeding with the following detailed description, it may be advantageous to set forth definitions of certain words and phrases used throughout this patent document. The term "coupled" and its derivatives refer to any direct or indirect communication between two or more elements, whether or not those elements are in physical contact with each other. The terms "send," "receive," and "communicate" and their derivatives include both direct and indirect communication. The terms "comprise" and "include" and their derivatives mean including but not limited to. The term "or" is inclusive and means and / or. The terms "associated with" and its derivatives refer to including, including within, interconnected with, containing, contained within, connected to or coupled with, communicable with, cooperating with, interlaced, juxtaposed, adjacent, bound to or coupled to, having, having the attribute of, related to or associated with, and the like. The term "controller" refers to any device, system, or part thereof that controls at least one operation. Such a controller can be implemented in hardware or in a combination of hardware and software and / or firmware. The functions associated with any particular controller can be centralized or distributed, whether local or remote. When used with a list of items, the phrase "at least one of..." means that different combinations of one or more of the listed items can be used and that 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 formed of 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, procedures, functions, objects, classes, instances, related data, or portions thereof that are adapted to be implemented in 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 read-only memory (ROM), random access memory (RAM), hard disk drive, compact disc (CD), digital versatile disc (DVD), or any other type of memory. A "non-transitory" computer-readable medium does not include wired, wireless, optical, or other communication links that transmit transitory electrical or other signals. Non-transitory computer-readable media include media in which data can be permanently stored and media in which data can be stored and subsequently overwritten, such as rewritable compact discs or erasable memory devices.

[0020] Definitions of other specific words and phrases are provided throughout this patent document. One of ordinary skill in the art will understand that, in many if not most instances, these definitions apply to both the prior and future use of the defined words and phrases.

[0021] Advantageous effects of the invention

[0022] The present disclosure may provide apparatuses and methods for channel state information (CSI) codebook parameters and CSI reporting for coherent joint transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more fully understand 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 FIG. shows an example wireless network according to an embodiment of the present disclosure;

[0025] Figure 2 FIG. shows an example gNodeB (gNB) according to an embodiment of the present disclosure;

[0026] Figure 3 FIG. shows an example UE according to an embodiment of the present disclosure;

[0027] Figure 4A FIG. shows an example of a wireless transmission path according to an embodiment of the present disclosure;

[0028] Figure 4B FIG. shows an example of a wireless reception path according to an embodiment of the present disclosure;

[0029] Figure 5 FIG. shows an example of a transmitter structure for beamforming according to an embodiment of the present disclosure;

[0030] Figure 6 FIG. shows an example of distributed multiple-input multiple-output (MIMO) according to an embodiment of the present disclosure;

[0031] Figure 7 FIG. shows an example of distributed MIMO according to an embodiment of the present disclosure;

[0032] Figure 8 FIG. shows an example of an antenna port layout according to an embodiment of the present disclosure;

[0033] Figure 9 FIG. shows a schematic diagram of an example 3D grid of a direct Fourier transform (DFT) beam according to an embodiment of the present disclosure;

[0034] Figure 10 FIG. shows an example of a codebook according to an embodiment of the present disclosure; and

[0035] Figure 11 Shows an example method performed by a UE in a wireless communication system according to an embodiment of the present disclosure. Detailed implementation

[0036] Discussed below Figures 1 to 11 And the various non-limiting embodiments used in this patent document to describe the principles of the present disclosure are for illustration only and should not be construed 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.

[0037] To meet the increasing demand for wireless data services since the deployment of 4G communication systems and to enable various vertical applications, 5G / NR communication systems have been developed and are being deployed. The 5G / NR communication system is implemented in a higher frequency (millimeter wave) band (e.g., 28 GHz or 60 GHz band) to achieve higher data rates or in a lower frequency band (e.g., 6 GHz) to achieve robust coverage and mobility support. To reduce the propagation loss of radio waves and increase the transmission distance, beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and large antenna technologies in 5G / NR communication systems are discussed.

[0038] In addition, in the 5G / NR communication system, development for system network improvement is ongoing based on advanced small cells, cloud radio access network (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communication, coordinated multi-point (CoMP), receiver interference cancellation, etc.

[0039] The discussion of 5G systems and their associated frequency bands is for reference only, as certain embodiments of the present disclosure can be implemented in 5G systems. However, the present disclosure is not limited to 5G systems or the frequency bands associated therewith, and the embodiments of the present disclosure can be used in combination with any frequency band. For example, aspects of the present disclosure can also be applied to the deployment of 5G communication systems, 6G, and even higher versions that may use the terahertz (THz) band.

[0040] The following documents and standards are incorporated by reference into this disclosure as if fully set forth herein: [1] 3GPP TS 36.211 v17.2.0, "E-UTRA, Physical channels and modulation"; [2] 3GPP TS 36.212 v17.2.0, "E-UTRA, Multiplexing and Channel coding"; [3] 3GPP TS 36.213 v17.2.0, "E-UTRA, Physical Layer Procedures"; [4] 3GPP TS 36.321 v17.1.0, "E-UTRAN, Medium Access Control (MAC) protocol specification"; [5] 3GPP TS 36.331 v17.1.0, "E-UTRAN, Radio Resource Control (RRC) Protocol Specification"; [6] 3GPP TS 38.211 v17.2.0: "NR, Physical channels and modulation"; [7] 3GPP TS 38.212 v17.2.0, "NR, Multiplexing and Channel coding"; [8] 3GPP TS 38.213 v17.2.0, "NR, Physical Layer Procedures for Control"; [9] 3GPP TS 38.214 v17.2.0, "NR, Physical Layer Procedures for Data";

[10] 3GPP TS 38.215 v17.1.0, "NR, Physical Layer Measurements";

[11] 3GPP TS 38.321 v17.1.0, "NR, Medium Access Control (MAC) protocol specification"; and

[12] 3GPP TS 38.331 v17.1.0, "NR, Radio Resource Control (RRC) Protocol Specification".

[0041] The following Figures 1 to 11 describes various embodiments implemented using orthogonal frequency division multiplexing (OFDM) or orthogonal frequency division multiple access (OFDMA) communication techniques in a wireless communication system. Figures 1 to 3 The description does not imply any physical or architectural limitations on the implementation of different embodiments. Different embodiments of the present disclosure can be implemented in any suitably arranged communication system.

[0042] Figure 1 FIG. 11 shows an example wireless network 100 according to an embodiment of the present disclosure. Figure 1 The embodiment of the wireless network 100 shown in FIG. 11 is for illustration only. Other embodiments of the wireless network 100 can be used without departing from the scope of the present disclosure.

[0043] As Figure 1 shown, the wireless network 100 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 networks.

[0044] gNB 102 provides wireless broadband access to the network 130 for a first plurality of user equipment (UE) within the coverage area 120 of gNB 102. The first plurality of UEs includes: 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 mobile phone, a wireless laptop, a wireless PDA, etc. gNB 103 provides wireless broadband access to the network 130 for a second plurality of UEs within the 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 - 103 may communicate with each other and with UEs 111 - 116 using 5G / NR, Long Term Evolution (LTE), Long Term Evolution - Advanced (LTE - A), WiMAX, WiFi, or other wireless communication technologies.

[0045] Depending on the network type, the term "base station" or "BS" can refer to any component (or collection of components) configured to provide wireless access to a network, such as a transmission point (TP), a transmission reception point (TRP), an enhanced base station (eNodeB or eNB), a 5G / NR base station (gNB), a macrocell, a femtocell, a Wi-Fi access point (AP), or other wireless-enabled devices. The base station can provide wireless access according to one or more wireless communication protocols, such as 5G / NR Third Generation Partnership Project (3GPP) NR, Long Term Evolution (LTE), LTE-Advanced (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 the network infrastructure components that provide wireless access to remote terminals. Additionally, depending on the network type, the term "user equipment" or "UE" can refer to any component, such as a "mobile station", "user station", "remote terminal", "wireless terminal", "reception point", or "user equipment". For convenience, the terms "user equipment" and "UE" used in this patent document refer to the remote wireless devices that wirelessly access the 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).

[0046] The dashed lines illustrate the approximate extent of coverage areas 120 and 125, shown as approximately circular for purposes of illustration and explanation only. It should be clearly understood that depending on the configuration of the gNB and the variations in the radio environment associated with natural and man-made obstacles, the coverage areas associated with the gNB (such as coverage areas 120 and 125) can have other shapes, including irregular shapes.

[0047] As described in more detail below, one or more of UEs 111 - 116 include circuitry, programming, or a combination thereof for utilizing and executing CSI codebook parameters and CSI reports for coherent joint transmission. In certain embodiments, one or more of BSs 101 - 103 include circuitry, programming, or a combination thereof for providing CSI codebook parameters and receiving CSI reports for coherent joint transmission.

[0048] Although Figure 1 an example of a wireless network is shown, it may be possible to Figure 1Make various changes. For example, the wireless network 100 may include any number of gNBs and any number of UEs arranged in any suitable configuration. Additionally, gNB 101 may communicate directly with any number of UEs and provide these UEs with wireless broadband access to network 130. Similarly, each of gNBs 102 - 103 may communicate directly with network 130 and provide the UEs with direct wireless broadband access to network 130. Further, gNBs 101, 102, and / or 103 may provide access to other or additional external networks, such as an external telephone network or other types of data networks.

[0049] Figure 2 An example gNB 102 according to an embodiment of the present disclosure is shown. Figure 2 The embodiment of gNB 102 shown in is for illustration only, and Figure 1 gNBs 101 and 103 in may have the same or similar configurations. However, gNBs have a wide variety of configurations, and Figure 2 does not limit the scope of the present disclosure to any particular specific implementation of gNBs.

[0050] As Figure 2 shown, gNB 102 includes a plurality of antennas 205a - 205n, a plurality of transceivers 210a - 210n, a controller / processor 225, a memory 230, and a backhaul or network interface 235.

[0051] Transceivers 210a - 210n receive incoming radio frequency (RF) signals, such as signals transmitted by UEs in the wireless network 100, from antennas 205a - 205n. Transceivers 210a - 210n down-convert the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are processed by receive (RX) processing circuitry in transceivers 210a - 210n and / or controller / processor 225, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. Controller / processor 225 may also process the baseband signal.

[0052] Transmit (TX) processing circuitry in transceivers 210a - 210n and / or controller / processor 225 receives analog or digital data (such as voice data, network data, email, or interactive video game data) from controller / processor 225. The TX processing circuitry encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. Transceivers 210a - 210n up-convert the baseband or IF signal to an RF signal transmitted through antennas 205a - 205n.

[0053] 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 transceiver 210a - 210n to receive uplink (UL) channel signals and transmit downlink (DL) channel signals according to well-known principles. The controller / processor 225 may also support additional functions, such as more advanced wireless communication functions. For example, the controller / processor 225 may support beamforming or directional routing operations, where outgoing / incoming signals from / to multiple antennas 205a - 205n are weighted differently to effectively direct the outgoing signals to the desired direction. As another example, the controller / processor 225 may support methods for providing CSI codebook parameters and receiving CSI reports for coherent joint transmission. The controller / processor 225 may support any of a variety of other functions in the gNB 102.

[0054] The controller / processor 225 is also capable of executing programs and other processes residing in the memory 230, such as processes for providing CSI codebook parameters and receiving CSI reports for coherent joint transmission. The controller / processor 225 may move data into or out of the memory 230 as needed for executing the processes.

[0055] The controller / processor 225 is also coupled to a backhaul or network interface 235. The backhaul or network interface 235 allows the gNB102 to communicate with other devices or systems via a backhaul connection or network. The interface 235 may support communication via any suitable wired or wireless connection. For example, when the gNB 102 is implemented as part of a cellular communication system (such as a system supporting 5G / NR, LTE, or LTE-A), the interface 235 may 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 may allow the gNB 102 to communicate via a wired or wireless local area network or via a wired or wireless connection to a larger network (such as the Internet). The interface 235 includes any suitable structure that supports communication via a wired or wireless connection (such as Ethernet or a transceiver).

[0056] The memory 230 is coupled to the controller / processor 225. A portion of the memory 230 may include RAM, and another portion of the memory 230 may include flash memory or other ROM.

[0057] Although Figure 2 one example of the gNB 102 is shown, various changes may be made to Figure 2 it. For example, the gNB 102 may include Figure 2 any number of each component shown in Figure 2The various components in can be combined, further subdivided, or other components can be omitted and added according to specific needs.

[0058] Figure 3 An example UE 116 according to an embodiment of the present disclosure is shown. Figure 3 The embodiment of UE 116 shown in is for illustration only, and Figure 1 UEs 111 - 115 can have the same or similar configurations. However, there are various configurations of UEs, and Figure 3 does not limit the scope of the present disclosure to any specific particular implementation of the UE.

[0059] As Figure 3 shown, UE 116 includes an antenna 305, a transceiver 310, and a microphone 320. UE 116 also includes a speaker 330, a processor 340, an input / output (I / O) interface (IF) 345, an input 350, a display 355, and a memory 360. The memory 360 includes an operating system (OS) 361 and one or more applications 362.

[0060] The transceiver 310 receives incoming RF signals transmitted by the gNB of the wireless network 100 from one or more antennas 305. The transceiver 310 down-converts 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 the transceiver 310 and / or the processor 340, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. The RX processing circuitry transfers the processed baseband signal to the speaker 330 (such as for voice data) or is processed by the processor 340 (such as for web browsing data).

[0061] The TX processing circuitry in the transceiver 310 and / or the processor 340 receives analog or digital voice data from the microphone 320, or other outgoing baseband data (such as network data, emails, 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, which is transmitted through the antenna 305.

[0062] The processor 340 can 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 can 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.

[0063] The processor 340 is also capable of executing other processes and programs resident in the memory 360. For example, the processor 340 may execute processes for utilizing CSI codebook parameters and performing CSI reporting for coherent joint transmission as described in embodiments of the present disclosure. The processor 340 may move data into or out of the memory 360 as needed for executing the processes. In some embodiments, the processor 340 is configured to execute the application 362 based on the OS 361 or in response to signals received from the gNB or the operator. The processor 340 is also coupled to an I / O interface 345, which provides the UE 116 with the ability to connect to other devices such as laptop computers and handheld computers. The I / O interface 345 is a communication path between these accessories and the processor 340.

[0064] The processor 340 is also coupled to an input 350 and a display 355. The input includes, for example, a touch screen, a keyboard, etc. The operator of the UE 116 may use the input 350 to input data into the UE 116. The 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 graphics from a website.

[0065] The memory 360 is coupled to the processor 340. A portion of the memory 360 may include random access memory (RAM), and another portion of the memory 360 may include flash memory or other read-only memory (ROM).

[0066] Although Figure 3 one example of the UE 116 is shown, various changes may be made to Figure 3 it. For example, Figure 3 the various components in Figure 3 may be combined, further subdivided, or other components may be omitted and added according to specific needs. As a specific example, the 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, the transceiver 310 may include any number of transceivers and signal processing chains and may be connected to any number of antennas. Additionally, although

[0067] Figure 4A and Figure 4BExamples of wireless transmit and receive paths 400 and 450 according to embodiments of the present disclosure are shown respectively. For example, the transmit path 400 may be described as being implemented in a gNB (such as gNB 102), while the receive path 450 may be described as being implemented in a UE (such as UE 116). However, it can be understood that the receive path 450 may be implemented in a gNB, and the transmit path 400 may be implemented in a UE. In some embodiments, the receive path 450 is configured to receive CSI codebook parameters for a coherent joint transmission CSI report, as described in embodiments of the present disclosure.

[0068] As Figure 4A shown, the transmit path 400 includes a channel coding and modulation block 405, a serial-to-parallel (S-to-P) block 410, an inverse fast Fourier transform (IFFT) block 415 of size N, a parallel-to-serial (P-to-S) block 420, a cyclic prefix addition block 425, and an upconverter (UC) 430. The receive path 450 includes a downconverter (DC) 455, a cyclic prefix removal block 460, a serial-to-parallel (S-to-P) block 465, a fast Fourier transform (FFT) block 470 of size N, a parallel-to-serial (P-to-S) block 475, and a channel decoding and demodulation block 480.

[0069] In the transmit path 400, 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 quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) to generate a sequence of frequency-domain modulation symbols. The serial-to-parallel block 410 converts (such as demultiplexes) the serial modulation symbols into parallel data to generate N parallel symbol streams, where N is the IFFT / FFT size used in gNB 102 and UE 116. The IFFT block 415 of size N performs an IFFT operation on the N parallel symbol streams to generate a time-domain output signal. The parallel-to-serial block 420 converts (such as multiplexes) the parallel time-domain output symbols from the IFFT block 415 of size N to generate a serial time-domain signal. The cyclic prefix addition block 425 inserts a cyclic prefix into the time-domain signal. The upconverter 430 modulates (such as upconverts) the output of the cyclic prefix addition block 425 to an RF frequency for transmission over a wireless channel. Before being converted to the RF frequency, the signal may also be filtered at baseband.

[0070] As Figure 4BAs shown, downconverter 455 downconverts the received signal to baseband frequency, and cyclic prefix removal block 460 removes the cyclic prefix to generate a serial time-domain baseband signal. Serial-to-parallel block 465 converts the time-domain baseband signal to a parallel time-domain signal. FFT block 470 of size N performs the FFT algorithm to generate N parallel frequency-domain signals. Parallel-to-serial (P-to-S) block 475 converts the parallel frequency-domain signals to a sequence of modulated data symbols. Channel decoding and demodulation block 480 demodulates and decodes the modulated symbols to recover the original input data stream.

[0071] Each of gNBs 101-103 can implement transmit path 400, similar to transmitting to UEs 111-116 in the downlink, and can implement receive path 450, similar to receiving from UEs 111-116 in the uplink. Similarly, each of UEs 111-116 can implement transmit path 400 for transmitting to gNBs 101-103 in the uplink, and can implement receive path 450 for receiving from gNBs 101-103 in the downlink.

[0072] Figure 4A and Figure 4B each component in can be implemented using only hardware or using a combination of hardware and software / firmware. As a specific example, Figure 4A and Figure 4B at least some components in can be implemented in software, while other components can be implemented by configurable hardware or a mix of software and configurable hardware. For example, FFT block 470 and IFFT block 415 can be implemented as configurable software algorithms, where the value of size N can be modified according to a specific implementation.

[0073] Furthermore, although described as using FFT and IFFT, this is only for illustration and should not be construed as limiting the scope of the present disclosure. Other types of transforms, such as discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT) functions, can be used. It can be understood that for DFT and IDFT functions, the value of variable N can be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of variable N can be any integer that is a power of 2 (such as 1, 2, 4, 8, 16, etc.).

[0074] Although Figure 4A and Figure 4B respectively show examples of wireless transmit and receive paths 400 and 450, various changes can be made to Figure 4A and Figure 4B For example, Figure 4A and Figure 4BThe various components in Figure 4A and Figure 4B are intended to illustrate examples of transmit and receive path types that can be used in a wireless network. Any other suitable architecture can be used to support wireless communication in a wireless network.

[0075] Figure 5 FIG. 8 shows an example of a transmitter structure 500 for beamforming according to an embodiment of the present disclosure. In some embodiments, one or more of the gNB 102 or the UE 116 includes the transmitter structure 500. For example, one or more of the antenna 205 and its associated system or the antenna 305 and its associated system can be included in the transmitter structure 500. This example is for illustration only, and other embodiments can be used without departing from the scope of the present disclosure.

[0076] Accordingly, embodiments of the present disclosure recognize that Rel-14 LTE and Rel-15 NR support up to 32 CSI reference signal (CSI-RS) antenna ports, which enables the eNB or gNB to be equipped with a large number of antenna elements (such as 64 or 128). Then, multiple antenna elements can be mapped to one CSI-RS port. For the millimeter wave band, although the number of antenna elements may be larger for a given form factor, due to hardware limitations (such as the feasibility of installing a large number of analog-to-digital converters (ADCs) / digital-to-analog converters (DACs) at millimeter wave frequencies), the number of CSI-RS ports corresponding to the number of digital precoding ports may be limited, as Figure 5 shown. Then, one CSI-RS port can be mapped to a large number of antenna elements that can be controlled by a set of analog phase shifters 501. Then, one CSI-RS port can correspond to a subarray that generates a narrow analog beam through analog beamforming 505. By changing the group of phase shifters on a symbol or a time slot / subframe, the analog beam can be configured to sweep over a wider angular range 520. The number of subarrays (equal to the number of RF chains) is the same as the number of CSI-RS ports N CSI-PORT of. The digital beamforming unit 510 performs a linear combination on the N CSI-PORT analog beams to further increase the precoding gain. Although the analog beam is broadband (and thus not frequency selective), the digital precoding can vary between frequency subbands or resource blocks. Receiver operation can be envisioned similarly.

[0077] Since Figure 5The transmitter structure 500 performs transmission and reception using multiple analog beams (where, for example, one or a few analog beams are selected from a large number of analog beams after a training duration that is performed occasionally or periodically), so the term "multi-beam operation" is used to refer to the overall system aspect. For illustrative purposes, this includes indicating the allocated DL or UL TX beam (also referred to as "beam indication"), measuring at least one reference signal to calculate and perform beam reporting (referred to as "beam measurement" and "beam reporting" respectively), and receiving DL or UL transmissions by selecting the corresponding RX beam. Figure 5 The system is also applicable to higher frequency bands, such as >52.6 GHz (also referred to as frequency range 4 or FR4). In this case, the system can only use analog beams. Due to the O2 absorption loss near 60 GHz (an additional loss of about 10 dB per 100-meter distance), a larger number and narrower analog beams (and thus a larger number of radiators in the array) are required to compensate for the additional path loss.

[0078] Embodiments of the present disclosure recognize that for cellular systems operating in a frequency range below 1 GHz (e.g., less than 1 GHz), it is challenging to support a large number of CSI-RS antenna ports (e.g., 32) at a single location or remote radio head (RRH) or TRP because larger antenna form factor sizes are required at these frequencies compared to systems operating at higher frequencies such as 2 GHz or 4 GHz. At such low frequencies, the maximum number of CSI-RS antenna ports that can be co-located at a single site (or TRP / RRH) can be limited to, for example, 8. This limits the spectral efficiency of such systems. In particular, the multi-user MIMO (MU-MIMO) spatial multiplexing gain provided by a large number of CSI-RS antenna ports (such as 32) cannot be achieved.

[0079] One method of operating a sub-1 GHz system with a large number of CSI-RS antenna ports is based on distributing antenna ports at multiple locations (or TRP / RRH). Multiple sites or TRP / RRH can still be connected to a single (common) base unit, so signals transmitted / received by multiple distributed TRP / RRS can still be processed at a centralized location. This is referred to as distributed MIMO or multi-TRP coherent joint transmission (C-JT).

[0080] The present disclosure evaluates the multi-TRP C-JT scenario and presents methods and apparatuses for considering codebook parameters for feedback overhead in this scenario.

[0081] Embodiments of the present disclosure relate to an electronic device and method for codebook parameter configuration for MIMO operation, and more particularly, to an electronic device and method for codebook parameter configuration for distributed MIMO or multi-TRP operation in a wireless network.

[0082] The CSI enhancements described in Rel-18 MIMO evaluate the Rel-16 / 17 Type-II CSI codebook optimization by considering the performance and overhead trade-off to support the mTRP Coherent Joint Transmission (C-JT) operation. The Rel-16 / 17 Type-II CSI codebook has three components W1, W2, and W f . Among them, especially in the mTRP C-JT operation, the component that may cause a large CSI feedback overhead is W2. In the present disclosure, we provide several embodiments regarding the codebook parameter configuration to reduce the amount of CSI reporting overhead, thereby providing a good performance and overhead trade-off for the C-JT operation.

[0083] In the present disclosure, a codebook parameter configuration (an extension of the paraCombination-r16 and paraCombination-r17 tables) is proposed to provide a good performance and overhead trade-off for the mTRP C-JT operation.

[0084] Figure 6 An example of a distributed MIMO 600 according to various embodiments of the present disclosure is shown. For example, the distributed MIMO 600 forms multiple antenna panels with a small number of antenna ports, such as antenna modules or RRHs, instead of integrating each antenna port in a single panel or a single site, and distributes the multiple panels in multiple locations / sites or RRHs. For example, the distributed MIMO 600 can be implemented by one or more BSs (such as BS102). This example is for illustration only, and other embodiments can be used without departing from the scope of the present disclosure.

[0085] On the other hand, in a lower frequency band such as <1 GHz, due to the larger wavelength, the number of antenna elements may not be large under a given form factor. For example, for a case where the center frequency is 600 MHz and the wavelength size (λ) is 50 cm, for a Uniform Linear Array (ULA) antenna panel with 16 antenna elements, the distance between two adjacent antenna elements is expected to be a half-wavelength distance of 4 m. Regarding multiple antenna elements mapped to a single digital port in an actual situation, the ideal size of the antenna panel at the gNB to support a large number of antenna ports (such as 32 CSI-RS ports) becomes very large in such a low frequency band, which makes it difficult to deploy a 2-D antenna element array within the size of a common form factor. This results in a limited number of CSI-RS ports that a single site can support and limits the spectral efficiency of such systems.

[0086] One possible way to solve this problem is to form multiple TRPs (multi-TRPs) or RRHs with a small number of antenna ports, rather than integrating each antenna port in a single panel (or single site) and distributing multiple panels at multiple locations / sites (or TRPs, RRHs).

[0087] Figure 7 Another example of a distributed MIMO 700 according to various embodiments of the present disclosure is shown. For example, the distributed MIMO 700 can be implemented by one or more BSs (such as BS102). This example is for illustration only, and other embodiments can be used without departing from the scope of the present disclosure.

[0088] Multiple TRPs at multiple locations can still be connected to a single base unit, so signals transmitted / received through multiple distributed TRPs can be processed in a centralized manner by a single base unit.

[0089] Note that although we have mentioned the low-frequency band system (below 1 GHz band) as the motivation for distributed MIMO (or mTRP), the distributed MIMO technology is independent of the frequency band. In addition to the low-frequency band (below 1 GHz) system, it can also be used in the mid-frequency band (below 6 GHz) and high-frequency band (above 6 GHz) systems.

[0090] The term "distributed MIMO" is used for illustrative purposes and can be used under other term sets, such as multi-TRP, mTRP, cell-free network, etc.

[0091] Each of the following components and embodiments is applicable to UL transmissions with a CP-OFDM (Cyclic Prefix OFDM) waveform as well as DFT-SOFDM (DFT-Spread OFDM) and SC-FDMA (Single Carrier FDMA) waveforms. In addition, when the scheduling unit is a subframe (which can include one or more time slots) or a time slot in time, each of the following components and embodiments is applicable to UL transmissions.

[0092] In the present disclosure, the frequency resolution (reporting granularity) and span (reporting bandwidth) of CSI reporting can be defined according to the frequency "sub-band" and "CSI reporting band" (CRB), respectively.

[0093] The sub-band for CSI reporting is defined as a set of consecutive physical resource blocks (PRBs), which represents the smallest frequency unit for CSI reporting. For a given DL system bandwidth value, the number of PRBs in the sub-band can be fixed, semi-statically configured by higher layer / RRC signaling, or dynamically configured by L1 DL control signaling or media access control (MAC) control element (MAC CE). The number of PRBs in the sub-band can be included in the CSI reporting settings.

[0094] The "CSI reporting band" is defined as a set of contiguous or non - contiguous sub - bands / a collection of sub - bands in which CSI reporting is performed. For example, the CSI reporting band can include every sub - band within the DL system bandwidth. This can also be referred to as the "full band". Alternatively, the CSI reporting band can include only a subset of sub - bands within the DL system bandwidth. This can also be referred to as the "partial band".

[0095] The term "CSI reporting band" is used only as an example to denote a function. Other terms can also be used, such as "CSI reporting sub - band set" or "CSI reporting bandwidth" or bandwidth part (BWP).

[0096] In terms of UE configuration, the UE can be configured with at least one CSI reporting band. This configuration can be semi - static (via higher - layer signaling or RRC) or dynamic (via MAC CE or L1 DL control signaling). When configured with multiple (N) CSI reporting bands (e.g., via RRC signaling), the UE can report CSI associated with n ≤ N CSI reporting bands. For example, a large system bandwidth greater than 6 GHz may require multiple CSI reporting bands. The value of n can be configured semi - statically (via higher - layer signaling or RRC) or dynamically (via MAC CE or L1 DL control signaling). Alternatively, UE 116 can report a recommended value of n via the UL channel.

[0097] Therefore, the CSI parameter frequency granularity can be defined as follows in terms of the CSI reporting band. When each of the M n sub - bands within the CSI reporting band has one CSI parameter, the CSI parameter is configured as a "single" report for the CSI reporting band with M n sub - bands. When one CSI parameter is reported for each of the M n sub - bands within the CSI reporting band, the CSI parameter is configured as a "sub - band" for the CSI reporting band with M n sub - bands.

[0098] Figure 8 An example of an antenna port layout 800 according to an embodiment of the present disclosure is shown. For example, the antenna port layout 800 can be implemented by Figure 1 BS102. This example is for illustration only, and other embodiments can be used without departing from the scope of the present disclosure.

[0099] Here, we assume that N1 and N2 are the numbers of antenna ports with the same polarization in the first dimension and the second dimension, respectively. For a 2D antenna port layout, we set N1 > 1 and N2 > 1, while for a 1D antenna port layout, we set N1 > 1 and N2 = 1. Thus, for a dual-polarized antenna port layout, when each antenna is mapped to one antenna port, the total number of antenna ports is 2N1N2. "X" represents two antenna polarizations. In the present disclosure, the term "polarization" refers to a set of antenna ports. For example, antenna port includes the first antenna polarization, while antenna port includes the second antenna polarization, where P CSIRS is the number of CSI-RS antenna ports, and X is the starting antenna port number (e.g., if X = 3000, then the antenna ports are 3000, 3001, 3002,...). Let N g be the number of antenna panels at gNB 102. When there are multiple antenna panels (N g > 1), we assume that each panel is a dual-polarized antenna port with N1 and N2 ports in two dimensions. Note that the antenna port layouts in different antenna panels may be the same or different.

[0100] In one example, an antenna architecture of a distributed MIMO (D-MIMO) or CJT (Coherent Joint Transmission) system is constructed. For example, the antenna structure at each RRH (or TRP) is dual-polarized (such as Figure 8 shown in a single panel or multiple panels). The antenna structures at each RRH / TRP can be the same. Or, the antenna structure at an RRH / TRP can be different from that of another RRH / TRP. Similarly, the number of ports at each RRH / TRP can be the same. Or, the number of ports at one RRH / TRP can be different from that of another RRH / TRP. In one example, N g = N RRH , the number of RRH / TRPs in D-MIMO transmission.

[0101] In another example, the antenna architecture of a D-MIMO or CJT system is unstructured. For example, the antenna structure at one RRH / TRP can be different from that of another RRH / TRP.

[0102] In the remaining part of the present disclosure, we assume a structured antenna architecture. For simplicity, we assume that each RRH / TRP is equivalent to a panel (refer to Figure 8), although in practice an RRH / TRP can have multiple panels. However, the present disclosure is not limited to the single-panel assumption at each RRH / TRP, and can easily be extended (cover) the case where an RRH / TRP has multiple antenna panels.

[0103] In one embodiment, the RRH constitutes (or corresponds to or is equivalent to or associated with) at least one of the following.

[0104] In one example, the RRH corresponds to a TRP.

[0105] In one example, the RRH or TRP corresponds to a CSI-RS resource. The UE is configured with K = N RRH =(N TRP )>1 non-zero power (NZP) CSI-RS resources, and CSI reporting is configured to span multiple CSI-RS resources. This is similar to the Category B, K>1 configuration in Rel.14 LTE. The K NZP CSI-RS resources can belong to a CSI-RS resource set or multiple CSI-RS resource sets (e.g., each of the K resource sets includes one CSI-RS resource). Details are as explained earlier in the present disclosure.

[0106] In one example, the RRH or TRP corresponds to a CSI-RS resource group, where one group includes one or more NZP CSI-RS resources. The UE is configured with K≥N RRH >1 non-zero power (NZP) CSI-RS resources, and CSI reporting is configured to span multiple CSI-RS resources from the resource group. This is similar to the Category B, K>1 configuration in Rel.14 LTE. The K NZP CSI-RS resources can belong to a CSI-RS resource set or multiple CSI-RS resource sets (e.g., each of the K resource sets includes one CSI-RS resource). Details are as explained herein in the present disclosure. Specifically, the K CSI-RS resources can be divided into N RRH resource groups. Information about resource grouping can be provided together with the CSI-RS resource setup / configuration, CSI reporting setup / configuration, or CSI-RS resource configuration.

[0107] In one example, the RRH or TRP corresponds to a subset (or group) of CSI-RS ports. The UE is configured with at least one NZP CSI-RS resource that includes (or is associated with) CSI-RS ports that can be grouped (or divided) into multiple subsets / groups / parts of antenna ports, each subset / group / part corresponding to (or constituting) an RRH / TRP. Information about the port subset or port grouping can be provided together with the CSI-RS resource setup / configuration, CSI reporting setup / configuration, or CSI-RS resource configuration.

[0108] In one example, according to the configuration, the RRH or TRP corresponds to one or more examples described herein. For example, the configuration can be explicit via a parameter (e.g., an RRC parameter). Or it can be implicit.

[0109] In one example, when it is implicit, it can be based on the value of K. For example, when K > 1 CSI-RS resources, the RRH corresponds to one or more examples described herein, and when K = 1 CSI-RS resource, the RRH corresponds to one or more examples described herein.

[0110] In another example, the configuration can be based on a configured codebook. For example, when the codebook corresponds to a decoupled codebook (modular or individual codebook for each RRH), the RRH corresponds to a CSI-RS resource or resource group, and when the codebook corresponds to a coupled (joint or coherent) codebook (a joint codebook on the TRP / RRH), the RRH corresponds to a subset (or group) of CSI-RS ports.

[0111] In one example, when the RRH or TRP maps (or corresponds to) a CSI-RS resource or resource group, and the UE can select a subset of the TRP / RRH (resource or resource group) and report the CSI of the selected TRP / RRH (resource or resource group), the selected TRP / RRH can be reported via an indicator. For example, the indicator can be a CRI or PMI (component) or a new indicator.

[0112] In one example, when the RRH or TRP maps (or corresponds to) a CSI-RS port group, and the UE can select a subset of the TRP / RRH (port group) and report the CSI of the selected TRP / RRHs (port group), the selected TRP / RRH can be reported via an indicator. For example, the indicator can be a CRI or PMI (component) or a new indicator.

[0113] In one example, when for N RRH TRP / RRHs multiple (K > 1) CSI-RS resources are configured, a decoupled (modular) codebook is used / configured, and when for N RRH TRP / RRHs a single (K = 1) CSI-RS resource is configured, a joint codebook is used / configured.

[0114] Figure 9 A schematic diagram of an example 3D grid of a direct Fourier transform (DFT) beam 900 according to an embodiment of the present disclosure is shown. For example, the DFT beam 900 can be implemented by Figure 1 BS102. This example is for illustration only, and other embodiments can be used without departing from the scope of the present disclosure.

[0115] As described in U.S. Patent No. 10,659,118, titled "Method and Apparatus for Explicit CSI Reporting in Advanced Wireless Communication Systems", issued on May 19, 2020, the UE is configured with high-resolution (e.g., type II) CSI reporting, where the type II CSI reporting framework based on linear combination is extended to include a frequency dimension in addition to the first and second antenna port dimensions. Refer to Figure 9 , a 3D grid of oversampled DFT beams (first port dimension, second port dimension, frequency dimension) is shown, where the first dimension is associated with the first port dimension, the second dimension is associated with the second port dimension, and the third dimension is associated with the frequency dimension.

[0116] The basis sets represented by the first and second port domains are oversampled DFT codebooks of length N1 and N2, respectively, and have oversampling factors O1 and O2, respectively. Similarly, the basis set in the frequency domain representation (i.e., the third dimension) is an oversampled DFT codebook of length N3 with an oversampling factor O3. In one example, O1 = O2 = O3 = 4. In one example, O1 = O2 = 4 and O3 = 1. In another example, the oversampling factor O i belongs to {2, 4, 8}. In another example, at least one of O1, O2, and O3 is configured by a higher layer (via RRC signaling)

[0117] As described in Section 5.2.2.2.6 of Reference 8, the UE is configured with a higher layer parameter codebookType, which is set to "typeII-PortSelection-r16" for enhanced type II CSI reporting, where for each subband (SB) and for a given layer l = 1,.., v (where v is the associated rank indicator (RI) value), the precoder is given by either of the following

[0118]

[0119] Or

[0120]

[0121] Where

[0122] ● N1 is the number of antenna ports on the first antenna port dimension (with the same antenna polarization).

[0123] ● N2 is the number of antenna ports on the second antenna port dimension (with the same antenna polarization).

[0124] ● PCSI-RS is the number of CSI-RS ports configured for UE 116.

[0125] ● N3 is the number of SBs or the number of FD units or the number of FD components (including CSI reporting bands) for PMI reporting or the total number of precoding matrices indicated by PMI (one per FD unit / component).

[0126] ● a i is a 2N1N2×1 (Equation 1) or N1N2×1 (Equation 2) column vector, or a i is P CSIRS ×1 (Equation 1) or a port selection column vector, where the port selection vector is defined as a vector that contains the value 1 in one element and the value 0 elsewhere.

[0127] ● b f is an N3×1 column vector.

[0128] ● c l,i,f is a complex coefficient.

[0129] In one variant, when UE 116 reports a subset K < 2LM coefficients (where K is fixed, configured by gNB 102, or reported by UE 116), the coefficient c in the precoder Equation 1 or Equation 2 l,i,f is replaced by x l,i,f × c l,i,f where

[0130] ● If, according to some embodiments of the present disclosure, the coefficient c l,i,f is reported by UE 116, then x l,i,f = 1.

[0131] ● Otherwise x l,i,f = 0 (i.e., c l,i,f is not reported by UE 116).

[0132] x l,i,f = 1 or 0 is indicated according to some embodiments of the present disclosure. For example, it can be implemented by a bitmap.

[0133] In one variant, the precoder Equation 1 or Equation 2 is generally generalized to

[0134]

[0135] and

[0136]

[0137] where for a given i, the number of basis vectors is M i and the corresponding basis vectors are {bi,f}. Note that M i is the number of coefficients c l,i,f reported by UE 116 for a given i, where M i ≤ M (where {M i} or ∑M i is fixed, configured by gNB 102, or reported by UE 116).

[0138] W l 's columns are normalized to norm 1. For rank R or R layers (υ = R), the precoding matrix is given by . It is assumed that Equation 2 holds for the remainder of this disclosure. However, embodiments of this disclosure are general and also apply to Equation 1, Equation 3, and Equation 4.

[0139] Here and M ≤ N3. If then A is the identity matrix and thus not reported. Similarly, if M = N3, then B is the identity matrix and thus not reported. In one example, assuming M < N3, to report the columns of B, an oversampled DFT codebook is used. For example, b f = w f , where the quantity w f is given by

[0140]

[0141] When O3 = 1, the FD basis vectors for layer l ∈ {1,.., υ} (where υ is the RI or rank value) are given by

[0142]

[0143] where and where

[0144] In another example, discrete cosine transform (DCT) basis vectors are used to construct / report the basis vectors B of the third dimension. The m-th column of the DCT compression matrix is simply given by , with K = N3 and m = 0, …, N3 - 1.

[0145] Since the DCT is applied to real-valued coefficients, the DCT is applied to the real and imaginary components (channel or channel eigenvector) separately. Alternatively, the DCT is applied to the magnitude and phase components (of the channel or channel eigenvector) separately. The use of DFT or DCT basis vectors is for illustrative purposes only. This disclosure applies to any other basis vectors for constructing / reporting A and B.

[0146] At a higher level, the precoder Wl It can be described as follows.

[0147]

[0148] Where A = W1 corresponds to Rel.15 W1 in the type II CSI codebook, and B = W f .

[0149] The matrix includes each necessary linear combination coefficient (e.g., amplitude and phase or real or imaginary). Each reported coefficient (c l,i,f = p l,i,f φ l,i,f ) in l,i,f ) is quantized into an amplitude coefficient (p l,i,f ) and a phase coefficient (φ l,i,f ). In one example, an A-bit amplitude codebook is used to report the amplitude coefficient (p l,i,f ), where A belongs to {2, 3, 4}. If multiple values are supported for A, one value is configured by higher layer signaling. In another example, the amplitude coefficient (p l,i,f ) is reported as Where is a reference or first amplitude reported using an A1-bit amplitude codebook, where A1 belongs to {2, 3, 4}, and is a differential or second amplitude reported using an A2-bit amplitude codebook, where A2 ≤ A1 belongs to {1, 3, 4}.

[0150] For layer l, let us represent the linear combination (LC) coefficient associated with the spatial domain (SD) basis vector (or beam) i ∈ {0, 1, …, 2L - 1} and the frequency domain (FD) basis vector or beam f ∈ {0, 1, …, M - 1} as c l,i,f , and the strongest coefficient is represented as This strongest coefficient is reported among the K NZ non-zero (NZ) coefficients reported using a bitmap, where and β are configured by higher layer. Assume that the remaining 2LM - K NZ coefficients not reported by UE 116 are zero. The following quantization scheme is used to quantize / report the K NZ NZ coefficients.

[0151] UE reports the following for quantization of the NZ coefficients in

[0152] ● An X-bit indicator for the strongest coefficient index (i * , f * ), where or

[0153] ■ Strongest coefficient (Therefore, its amplitude / phase is not reported.)

[0154] ● Use two antenna polarization specific reference amplitudes.

[0155] ■ For the polarization associated with the strongest coefficient Since the reference amplitude Therefore, it is not reported.

[0156] ■ For the other polarization, the reference amplitude is quantized to 4 bits.

[0157] 1. The 4-bit amplitude alphabet is

[0158] ● For {c l,i,f , (i, f) ≠ (i * , f * )}:

[0159] ■ For each polarization, calculate the differential amplitude of the coefficient relative to the associated polarization specific reference amplitude and quantize it to 3 bits.

[0160] 1. The 3-bit amplitude alphabet is

[0161] 2. Note that: The final quantized amplitude p l,i,f is given by .

[0162] ■ Each phase is quantized to 8PSK (N ph = 8) or 16PSK (N ph = 16) (which is configurable).

[0163] For the polarization r associated with the strongest coefficient * ∈ {0, 1}, we let and the reference amplitude For the other polarization r ∈ {0, 1} and r ≠ r * , we let and use the 4-bit amplitude codebook mentioned in this article to quantize (report) the reference amplitude .

[0164] In Rel.16 enhanced type II and type II port selection codebooks, the UE can be configured to report M FD basis vectors. In one example, where R is configured by the higher layer from {1, 2}, and p is from configured by the higher layer. In one example, the p value is configured by the higher layer for rank 1-2 CSI reports. For rank > 2 (e.g., rank 3-4), the p value (denoted by v0) can be different. In one example, for rank 1-4, (p, v0) is from jointly configured by the higher layer, i.e., for rank 1-2 is and for rank 3-4 is ). In one example, N3 = N SB × R, where N SB is the number of SBs for channel quality information (CQI) reporting. In one example, L is replaced by M υ to show its dependence on the rank value v, so p is replaced by p v (υ ∈ {1, 2}) and v0 is replaced by p v (υ ∈ {3, 4}).

[0165] The UE can be configured to freely (independently) report M υ FD basis vectors from N3 basis vectors in one step for each layer l ∈ {1,.., υ} of the rank υ CSI report. Alternatively, the UE can be configured to report M υ FD basis vectors in two steps as follows.

[0166] ● In step 1, select / report an intermediate set (InS) that includes N′3 < N3 basis vectors, where InS is common for each layer.

[0167] ● In step 2, for each layer l ∈ {1,.., υ} of the rank υ CSI report, freely (independently) select / report M v FD basis vectors from the N′3 basis vectors in InS.

[0168] In one example, the one-step method is used when N3 ≤ 19 and the two-step method is used when N3 > 19. In one example, where α > 1 is fixed (e.g., fixed to 2) or configurable.

[0169] The codebook parameters used in DFT-based frequency-domain compression (Equation 5) are (p for L, υ ∈ {1, 2} υ , p for v ∈ {3, 4} υ , β, α, N ph ). The set of values of these codebook parameters is as follows.

[0170] ● L: The set of values is generally {2, 4} except that for rank 1-2, L ∈ {2, 4, 6}, 32 CSI-RS antenna ports, and R = 1.

[0171] ●

[0172] ●

[0173] ● α = 2.

[0174] ● N ph = 16.

[0175] The set of values of these codebook parameters is shown in Table 1.

[0176] [Table 1]

[0177]

[0178]

[0179] In Rel. 17 (further enhanced type II port selection codebook), M ∈ {1, 2}, where K1 = α × P CSIRS , and the codebook parameters (M, α, β) are configured from Table 2.

[0180] [Table 2]

[0181] paramCombination-r17 M α β 1 1 3 / 4 1 / 2 2 1 1 1 / 2 3 1 1 3 / 4 4 1 1 1 5 2 1 / 2 1 / 2 6 2 3 / 4 1 / 2 7 2 1 1 / 2 8 2 1 3 / 4

[0182] The framework mentioned in this paper (Equation 5) represents a precoding matrix for multiple (N3) FD units using a linear combination (double sum) of 2L (or K1) SD beams / ports and M υ FD beams. This framework can also represent the precoding matrix in the time domain (TD) by replacing the FD basis matrix W t with the TD basis matrix W f , where the columns of W t include M υ TD beams representing some form of delay or channel tap position. Therefore, the precoder W l can be described as follows.

[0183]

[0184] In one example, M v TD beams (representing delay or channel tap position) are selected from a set of N3 TD beams, where N3 corresponds to the maximum number of TD units, and each TD unit corresponds to a delay or channel tap position. In one example, one TD beam corresponds to a single delay or channel tap position. In another example, one TD beam corresponds to multiple delays or channel tap positions. In another example, one TD beam corresponds to a combination of multiple delays or channel tap positions.

[0185] Figure 10 An example of a new codebook 1000 according to an embodiment of the present disclosure is shown. For example, the new codebook 1000 can be implemented by Figure 1 BS102. This example is for illustration only, and other embodiments can be used without departing from the scope of the present disclosure.

[0186] In one example, the codebook for CSI reporting is based on at least one of the following examples.

[0187] ● In one example, the codebook can be a Rel.15 type I single-panel codebook (Reference 5.2.2.2.1, Document and Standard [9]).

[0188] ● In one example, the codebook can be a Rel.15 type I multi-panel codebook (Reference 5.2.2.2.2, Document and Standard [9]).

[0189] ● In one example, the codebook can be a Rel.15 type II codebook (Reference 5.2.2.2.3, Document and Standard [9]).

[0190] ● In one example, the codebook can be a Rel.15 port selection type II codebook (Reference 5.2.2.2.4, Document and Standard [9]).

[0191] ● In one example, the codebook can be a Rel.16 enhanced type II codebook (Reference 5.2.2.2.5, Document and Standard [9]).

[0192] ● In one example, the codebook can be a Rel.16 enhanced port selection type II codebook (Reference 5.2.2.2.6, Document and Standard [9]).

[0193] ● In one example, the codebook can be a Rel.17 further enhanced port selection type II codebook (Reference 5.2.2.2.7, Document and Standard [9]).

[0194] ● In one example, the codebook is a new codebook for C-JT CSI reporting.

[0195] ○ In one example, the new codebook is a decoupled codebook, including the following components: (hereinafter referred to as "CB1")

[0196] ■ Inside the TRP: The Rel.16 / 17 type II codebook component per TRP, i.e., the SD basis vector (W1), the FD basis vector (Wf), and the W2 component (e.g., the SCI, the index of the NZ coefficients, and the amplitude / phase of the NZ coefficients).

[0197] ■ Between TRPs: The same amplitude and the same phase for each TRP.

[0198] ○ In one example, the new codebook is a joint codebook (hereinafter referred to as "CB2") including the following components:

[0199] ■ SD basis vectors (W1) per TRP.

[0200] ■ Single joint FD basis vector (Wf).

[0201] ■ Single joint W2 component (e.g., SCI, indices of NZ coefficients, and magnitudes / phases of NZ coefficients).

[0202] In one example, when the codebook is a legacy codebook (e.g., Rel15 / 16 / 17 NR codebook according to an example in this document), the CSI report is based on a CSI resource set including one or more NZP CSI-RS resources, where each NZP CSI-RS resource includes CSI-RS antenna ports for each TRP / RRH, i.e., where P is the total number of antenna ports, and P r is the number of antenna ports associated with the r-th TRP. In this case, one TRP corresponds to (or maps to or is associated with) a set of antenna ports.

[0203] In one example, when the codebook is a new codebook (e.g., one of the two new codebooks in this document), the CSI report is based on a CSI resource set including one or more NZP CSI-RS resources.

[0204] ● In one example, each NZP CSI-RS resource includes CSI-RS antenna ports for each TRP / RRH, i.e., where P is the total number of antenna ports, and P r is the number of antenna ports associated with the r-th TRP. In this case, one TRP corresponds to (or maps to or is associated with) a set of antenna ports.

[0205] ● In one example, each NZP CSI-RS resource corresponds to (or maps to or is associated with) one TRP / RRH.

[0206] In another embodiment, the UE configures an mTRP (or D-MIMO or C-JT) codebook through a higher layer parameter codebookType set to, for example, "typeII-r18-cjt", and this codebook is designed based on the Rel-16 / 17 type II codebook. For example, the mTRP codebook has a three-level structure and can be expressed as where the component W1 is used to report / indicate a spatial domain (SD) basis matrix including SD basis vectors, and the component W fis used to report / indicate a frequency-domain (FD) basis matrix including FD basis vectors, and component W2 is used to report / indicate coefficients corresponding to SD and FD basis vectors.

[0207] In one example, in the Rel-16 type II codebook, L vectors i = 0, 1, …, L−1 are identified by indices q1, q2, n1, n2, and are indicated by i 1,1 、i 1,2 as obtained in 5.2.2.2.3, where the value of C(x,y) is given in Table 5.2.2.2.5-4 of [9].

[0208] In the Rel-18 type II codebook for multi-TRP, L n SD basis vectors can be selected / reported for each TRP n, where we denote L n as the number of SD basis vectors for TRP n (CSI-RS resource n).

[0209] In one embodiment, regarding the selection of SD basis vectors for the (Rel-18) type II codebook refinement for CJT mTRP, {L n , n = 1, ..., N TRP} are each configured by NW 130 via higher layer (RRC) signaling, where N TRP is the number of TRPs configured by NW 130.

[0210] In one example, L n ∈ {2, 4, 6}. In one example, L n ∈ {1, 2, 4, 6}. In one example, L n ∈ {1, 2, 3, 4, 5, 6}. In one example, L n ∈ {1, 2, 3, 4}. In one example, L n ∈ {1, 2, 3}. In one example, L a ∈ {1, 2, 4}. In one example, L can be selected from where n is a subset of {1, 2, 3, 4, 5, 6}.

[0211] In one embodiment, regarding the selection of SD basis vectors for the (Rel-18) type II codebook refinement for CJT mTRP, is configured by NW 130 via higher layer (RRC) signaling, while the relative values of {L n , n = 1, ..., N TRP} are reported by UE 116, where N TRPis the number of TRPs configured by NW 130. Although we represent the upper limit for as L max , another symbol can also be used for L max , such as L sum , L′, , etc. In one example, N TRP ∈{1,2,3,4}.

[0212] In one example, L max ∈{2N TRP , 4N TRP , 6N TRP}. In one example, L max ∈{1N TRP , 2N TRP , 4N TRP , 6N TRP}. In one example, L max ∈{1N TRP , 2N TRP , 3N TRP , 4N TRP , 5N TRP , 6N TRP}. In one example, L max ∈{1N TRP , 2N TRP , 3N TRP , 4N TRP}. In one example, L max ∈{1N TRP , 2N TRP , 3N TRP}.

[0213] In one example, L max ∈{1N TRP , 2N TRP , 4U TRP}. In one example, L can be selected from , where max is a subset of {1,…,24}. is a subset of {1,…,24} and x = 1, 2, 3, or 4.

[0214] In one example, for N TRP ≥x, while for TRP <x, where and is a subset of {1,…,24} and x = 1, 2, 3, or 4.

[0215] In one example, for N TRP>x, For TRP ≤x, where and are subsets of {1,…,24} and x = 1, 2, 3, or 4.

[0216] In another example, the selection of {L m , n = 1, ..., N TRP} is explicitly reported by a joint indicator or multiple individual indicators in CSI part 1. For example, under the constraints of and L n ≥ 0 (n = 1, …, N TRP , where L n is a non - negative integer), a joint indicator can be used to indicate In another example, under the constraints of and L n ≥ 0, an indicator can be used to indicate for each L of n = 1, …, N TRP . In one example, each L n is selected from the set n and is indicated by a bit indicator. Thus, in this case, N bit indicators can be used. In one example, TRP bit indicators. In one example, In one example, In another example, In one example, In one example, In one example, In one example, is a subset of {1, 2, 3, 4, 5, 6}.

[0217] In another example, the selection of L for each TRPn is reported by a joint indicator or multiple individual indicators in CSI part 2. n SD basis vectors.

[0218] ● In one example, the indicator for indicating (each) L n SD basis vectors has a bit payload (bit width), where N1 and N2 are values of (N1, N2) configured by NW 130 via higher layer (RRC) signaling. For any TRPn, where L n = 0 (i.e., no SD beam selection case) and / or where no TRPn is selected (which can be indicated by N in CSI part 1)TRP The SD basis vectors of TRPn are not reported in the bitmap indication, so no payload is generated.

[0219] ● In one example, the joint indicator indicating {L n} has a -bit payload (bit width). For any TRPn where L n = 0 (i.e., no SD beam selection case) and / or where TRPn is not selected (which can be indicated by the N TRP -bit bitmap in CSI part 1), the SD basis vectors of TRPn are not reported, so no additional payload is generated in the sum.

[0220] In another example, L associated with the selected TRP is explicitly reported through the joint indicator or multiple individual indicators in CSI part 1. n In CSI part 1, an N TRP -bit bitmap is used to indicate the N TRPs selected from among N TRP TRPs. For example, when N TRP = 4 and the N TRP -bit bitmap in CSI part 1 is "1001", the first TRP and the fourth TRP are selected. In this example, L associated with the selected TRP is explicitly reported. n .

[0221] ● In one example, the joint indicator can be used to indicate {L n} n∈S under the following constraints, i.e., for n ∈ S, L max ≥ ∑ n∈S L n and L n ≥ 1, where L n is a positive integer and S is the set of selected TRP indices (i.e., a subset of {1, 2,..., N TRP}).

[0222] ● In one example, the joint indicator can be used to indicate under the following constraints, i.e., for n = 1,..., N, and L n ≥ 1, where L n is a positive integer.

[0223] ● In one example, the indicator can be used to indicate each L n (n ∈ S) under the following constraints, i.e., L max ≥ ∑ n∈S L n and L n ≥ 1, where L nis a positive integer, and S is a set of selected TRP indices (i.e., a subset of {1, 2, …, N TRP}). In one example, each L n is selected from the set and is indicated by a bit indicator. Thus, in this case, N bit indicators can be used. In one example, In one example, In another example, In one example, In one example, In one example, In one example, is a subset of {1, 2, 3, 4, 5, 6}.

[0224] ● In one example, the indicator can be used to indicate each L n (n = 1, …, N) under the following constraints, i.e., for n = 1, …, N, and l n ≥ 1, where l n is a positive integer. In one example, each L n is selected from the set and is indicated by a bit indicator. Thus, in this case, N bit indicators can be used. In one example, In one example, In another example, In one example, In one example, In one example, In one example, is a subset of {1, 2, 3, 4, 5, 6}.

[0225] In another example, the selection of L n SD basis vectors for each TRP n is reported by a joint indicator or multiple individual indicators in CSI part 2.

[0226] ● In one example, the indicator indicating (each) L n SD basis vectors has a bit payload (bit width), where N1 and N2 are values of (N1, N2) configured by NW 130 via higher layer (RRC) signaling, where n ∈ S or n = 1, …, N.

[0227] ● In one example, indicating {Ln}The joint indicator of the SD basis vectors has bits or a payload of bits.

[0228] In another example, the L associated with the selected TRP is explicitly reported through the joint indicator in CSI part 2 or multiple individual indicators n . The remainder is similar to one or more examples described herein. For example, when N TRP = 4 and in CSI part 1, the N TRP -bit bitmap is "1001", the first TRP and the fourth TRP are selected. In this example, the L associated with the selected TRP is explicitly reported n .

[0229] ● In one example, the joint indicator can be used to indicate {L n} n∈S under the following constraints, i.e., for n ∈ S, L max ≥ ∑ n∈P L n and L n ≥ 1,, where L n is a positive integer, and S is the set of selected TRP indices (i.e., a subset of {1, 2,..., N TRP}).

[0230] ● In one example, the joint indicator can be used to indicate i.e., for n = 1,..., N, and L n ≥ 1,, where L n is a positive integer.

[0231] ● In one example, the indicator can be used to indicate each L n (n ∈ S) under the following constraints, i.e., L max ≥ ∑ n∈S L n and L n ≥ 1, where L n is a positive integer, and S is the set of selected TRP indices (i.e., a subset of {1, 2,..., N TRP}). In one example, each L n is selected from the set and is indicated by a -bit indicator. Therefore, in this case, N -bit indicators can be used. In one example, In one example, In another example, In one example, In one example, In one example, In one example, is a subset of {1, 2, 3, 4, 5, 6}.

[0232] ● In one example, an indicator can be used to indicate each L under the following constraints n (n = 1, …, N), that is, for n = 1, …, N, and L n ≥ 1, where L n is a positive integer. In one example, each L n is selected from the set and is indicated by a bit indicator. Therefore, in this case, N bit indicators can be used. In one example, In one example, In another example, In one example, In one example, In one example, In one example, is a subset of {1, 2, 3, 4, 5, 6}.

[0233] In another example, the selection of L SD basis vectors for each TRPn is reported by a joint indicator or multiple individual indicators in CSI part 2. n SD basis vectors.

[0234] ● In one example, the indicator indicating (each) L n SD basis vectors has a bit payload (bit width), where N1 and N2 are values of (N1, N2) configured by NW 130 through higher layer (RRC) signaling, where n ∈ S or n = 1, …, N.

[0235] ● In one example, the joint indicator indicating {L n} SD basis vectors has a bit or bit payload.

[0236] In another embodiment, L tot is determined by the UE, where and the determined L is reported in CSI part 1. tot In one example, the indicator used to indicate L tot has a payload bit in size, that is, L totSelected from {1, 2, …, L max}. In another example, the indicator for indicating L tot has a payload with a size of bits, where is a set including L max and positive integers less than or equal to L max , and is the number of elements in. In one example, can be any subset of {1, 2, …, L max}. In one example, can be any subset of.

[0237] In one example, L tot ∈ {2N TRP , 4N TRP , 6N TRP}. In one example, L tot ∈ {1N TRP , 2N TRP , 4N TRP , 6N TRP}. In one example, L tot ∈ {1N TRP , 2N TRP , 3N TRP , 4N TRP , 5N TRP , 6N TRP}. In one example, L tot ∈ {1N TRP , 2N TRP , 3N TRP , 4N TRP}. In one example, L tot ∈ {1N TRP , 2N TRP , 3N TRP}.

[0238] In one example, L tot ∈ {1N TRP , 2N TRP , 4N TRP}. In one example, L tot can be selected from a subset of {1, …, 24}.

[0239] In one example, L tot ∈ {2N TRP , 4N TRP , 6N TRP} ∩ {1, 2, …, L max}}. In one example, L tot ∈{1N TRP , 2N TRP , 4N TRP , 6N TRP} ∩ {1, 2, …, L max}}. In one example, L tot ∈{1N TRP , 2N TRP , 3N TRP , 4N TRP , 5N TRP , 6N TRP} ∩ {1, 2, …, l max}}. In one example, L tot ∈{1N TRP , 2N TRP , 3N TRP , 4N TRP} ∩ {1, 2, …, L max}}. In one example, L tot ∈{1N TRP , 2N TRP , 3N TRP} ∩ {1, 2, …, L max}}.

[0240] In one example, L tot ∈{1N TRP , 2N TRP , 4N TRP} ∩ {1, 2, …, L max}}. In one example, L tot can be selected from the subset of {1, …, 24} ∩ {1, 2, …, L max}}.

[0241] In another example, some of {L n , n = 1, ..., N TRP} are explicitly reported through the joint indicator or separate multiple indicators in CSI part 1, while some of {L n , n = 1, ..., N TRP} are implicitly reported (or implicitly determined and thus not explicitly reported).

[0242] ● In one example, the joint indicator can be used to indicate (i.e., excluding L with the highest index), and is implicitly determined by and and thus not reported Here, for n = 1, …, N TRP - 1, L n≥0, where L n is a non - negative integer.

[0243] ● In one example, a combined indicator can be used to indicate (i.e., excluding L with the lowest index), and L1 is implicitly determined by and , so L1 is not reported. Here, for n = 2, …, N TRP , L n ≥0, where L n is a non - negative integer.

[0244] ● In one example, a combined indicator can be used to indicate (i.e., excluding L with the reference TRP index n ＊ , which can be determined by the UE or configured by the NW 130 or determined by a predefined rule), and is determined implicitly by and , so is not reported. Here, for n ∈ {1, …, N TRP}\{n ＊}, L n ≥0, where L n is a non - negative integer.

[0245] ● In one example, an indicator can be used to indicate for each L where n = 1, …, N TRP -1 n (i.e., excluding L with the highest index), and is determined implicitly by and , so is not reported. Here, for n = 1, …, N TRP -1, L n ≥0, where L n is a non - negative integer.

[0246] ● In one example, an indicator can be used to indicate for each L where n = 2, …, N TRP n (i.e., excluding L with the lowest index), and L1 is determined implicitly by and , so L1 is not reported. Here, for n = 2, …, N TRP , L n ≥0, where L n is a non - negative integer.

[0247] ● In one example, an indicator can be used to indicate for each L where n ∈ {1, …, N TRP}\{n ＊}​n (i.e., excluding L with reference TRP index n ＊ which can be determined by the UE or configured by the NW 130 or determined by predefined rules), and is implicitly determined by and and thus not reported Here, for n ∈ {1, …, N TRP}\{n ＊} n ≥ 0, where L n is a non - negative integer.

[0248] In another example, the selection of L SD basis vectors for each TRP n is reported via a joint indicator or multiple individual indicators in CSI part 2 n (similar / same as one or more examples described herein).

[0249] ● In one example, the indicator indicating (each) L n SD basis vectors has a payload (bit width) of bits, where N1 and N2 are values of (N1, N2) configured by the NW 130 via higher layer (RRC) signaling. For any TRP n where L n = 0 (i.e., no SD beam selection case) and / or where TRP n is not selected (which can be indicated by an N TRP bit bitmap in CSI part 1), the SD basis vectors of TRP n are not reported and thus no payload is generated.

[0250] ● In one example, the joint indicator indicating {L n} SD basis vectors has a payload (bit width) of bits. For any TRP n where L n = 0 (i.e., no SD beam selection case) and / or where TRP n is not selected (which can be indicated by an N TRP bit bitmap in CSI part 1), the SD basis vectors of TRP n are not reported and thus no additional payload is generated in the sum.

[0251] In another example, L TRP SD basis vectors are selected from each SD basis vector candidate on N tot TRPs, and the selection of the L SD basis vectors is reported via an indicator of size tot bits in CSI part 1. In this case, L n is implicitly determined by counting the number of selected SD basis vectors among the candidate SD basis vectors belonging to each TRP.

[0252] In another example, for each candidate of the SD basis vectors on N TRP TRPs, L tot SD basis vectors are selected, and the selection of the L SD basis vectors is reported via an indicator with a tot bit size in CSI part 2. In this case, L is implicitly determined by counting the number of selected SD basis vectors that belong to each candidate SD basis vector of each TRP n .

[0253] In another example, for each candidate of the SD basis vectors on N TRPs, L tot SD basis vectors are selected, where N is the number of selected TRPs. For example, in CSI part 1, an N TRP bit bitmap is used to indicate the selected N TRPs out of the N TRP TRPs. For example, when N TRP = 4 and the N TRP bit bitmap in CSI part 1 is "1001", the first TRP and the fourth TRP are selected. The selection of the L SD basis vectors is reported via an indicator with a tot bit size in CSI part 1. In this case, L is implicitly determined by counting the number of selected SD basis vectors that belong to each candidate SD basis vector of each selected TRP n .

[0254] In another example, for each candidate of the SD basis vectors on N TRPs, L tot SD basis vectors are selected, where N is the number of selected TRPs. For example, in CSI part 1, an N TRP bit bitmap is used to indicate the selected N TRPs out of the N TRP TRPs. For example, when N TRP = 4 and the N TRP bit bitmap in CSI part 1 is "1001", the first TRP and the fourth TRP are selected. The selection of the L SD basis vectors is reported via an indicator with a tot bit size in CSI part 2. In this case, L is implicitly determined by counting the number of selected SD basis vectors that belong to each candidate SD basis vector of each selected TRP n .

[0255] In another embodiment, L tot is determined by the UE, where (or L max ≥ L tot = ∑n∈S L n ), and report the determined L in CSI part 1 tot . Here, N is the number of selected TRPs selected from N TRP TRPs, and S is the set of selected TRP indices (i.e., a subset of {1, 2, …, N TRP}}. Note that in CSI part 1, an N TRP -bit bitmap can be used to indicate the N TRP selected TRPs out of N tot TRPs. In one example, the indicator for indicating L has a payload tot bit size, i.e., L max is selected from {1, 2, …, L tot}}. In another example, the indicator for indicating L has a payload bit size, where max is a set including L max and positive integers less than or equal to L is the number of elements in . In one example, max can be any subset of {1, 2, …, L }}. In one example, can be any subset of tot . In one example, the indicator for indicating L has a payload tot bit size, i.e., L is selected from

[0256] . In one example, L tot ∈ {2N, 4N, 6N}. In one example, L tot ∈ {1N, 2N, 4N, 6N}. In one example, L tot ∈ {1N, 2N, 3N, 4N, 5N, 6N}. In one example, L tot ∈ {1N, 2N, 3N, 4N}. In one example, L tot ∈ {1N, 2N, 3N}.

[0257] . In one example, L tot ∈ {1N, 2N, 4N}. In one example, L tot can be selected from a subset of {1, …, 24}. In one example, L tot ∈ {2N, 4N, 6N} ∩ {1, 2, …, L max}}. In one example, Ltot ∈ {1N, 2N, 4N, 6N} ∩ {1, 2, …, L max}. In one example, L tot ∈ {1N, 2N, 3N, 4N, 5N, 6N} ∩ {1, 2, …, L max}. In one example, L tot ∈ {1N, 2N, 3N, 4N} ∩ {1, 2, …, L max}. In one example, L tot ∈ {1N, 2N, 3N} ∩ {1, 2, …, L max}. In one example, L tot ∈ {1N, 2N, 4N} ∩ {1, 2, …, L max}. In one example, L tot can be selected from a subset of {1, …, 24} ∩ {1, 2, …, L max}.

[0258] In another example, some of the L n associated with the selected TRP are explicitly reported by the joint indicator or separate multiple indicators in CSI part 1, while some of the L n associated with the selected TRP are implicitly reported (or implicitly determined and thus not explicitly reported). In CSI part 1, an N TRP bit - map is used to indicate N TRP selected TRPs out of N TRP TRPs. For example, when N TRP = 4 and the N n bit - map in CSI part 1 is "1001", the first TRP and the fourth TRP are selected. In this example, some of the L

[0259] ● In one example, a joint indicator can be used to indicate and by and L tot = ∑ n∈S L n and L n ≥ 1 (n ∈ S\{n Low}) is implicitly determined, where L n is a positive integer, and S is the set of selected TRP indices (i.e., a subset of {1, 2, …, N TRP}) and n Low is the lowest index in S.

[0260] ● In one example, a joint indicator can be used to indicate and through and L tot = ∑ n∈S L n and L n ≥ 1 (n ∈ S\{n iigh}) is implicitly determined, where L n is a positive integer, and S is a set of selected TRP indices (i.e., a subset of {1, 2, …, N TRP}) and n iigh is the highest index in S.

[0261] ● In one example, a combined indicator can be used to indicate and through and L tot = ∑ n∈S L n and L n ≥ 1 (n ∈ S\{n ＊}) is implicitly determined, where L n is a positive integer, and S is a set of selected TRP indices (i.e., a subset of {1, 2, …, N TRP}) and n ＊ is a reference index in S, and it can be determined by the UE or configured by the NW 130 or determined by a predefined rule.

[0262] ● In one example, a combined indicator can be used to indicate and L N through and and L n ≥ 1, (n = 1, …, N - 1) is implicitly determined, where L n is a positive integer.

[0263] ● In one example, a combined indicator can be used to indicate and L1 through and and L n ≥ 1, (n = 2, …, N) is implicitly determined, where L n is a positive integer.

[0264] ● In one example, a combined indicator can be used to indicate and through and and L n ≥ 1, (n ∈ {1, …, N}\{n ＊}) is implicitly determined, where L n is a positive integer.

[0265] ● In one example, an indicator can be used to indicate for each L where n ∈ S\{n Low} n , and by and L tot = ∑ n∈S L n and L n ≥ 1 (n ∈ S\{n Low}) is implicitly determined, where L n is a positive integer, and S is a set of selected TRP indices (i.e., a subset of {1, 2, …, N TRP}) and n Low is the lowest index in S.

[0266] ● In one example, an indicator can be used to indicate for each L where n ∈ S\{n High}) n , and by and L tot = ∑ n∈S L n and L n ≥ 1 (n ∈ S\{n High}) is implicitly determined, where L n is a positive integer, and S is a set of selected TRP indices (i.e., a subset of {1, 2, …, N TRP}) and n High is the highest index in S.

[0267] ● In one example, an indicator can be used to indicate for each L where n ∈ S\{n ＊}) n , and by and L tot = ∑ n∈S L n and L n ≥ 1 (n ∈ S\{n ＊}) is implicitly determined, where L n is a positive integer, and S is a set of selected TRP indices (i.e., a subset of {1, 2, …, N TRP}) and n ＊ is a reference index in S, and it can be determined by the UE or configured by the NW 130 or determined by a predefined rule.

[0268] ● In one example, an indicator can be used to indicate for each L where n = 1, …, N - 1 n , and L N by and and Ln ≥ 1, (n = 1, …, N - 1) is implicitly determined, where L n is a positive integer.

[0269] ● In one example, an indicator can be used to indicate each L for n = 2, …, N n , and L1 is determined by and and L n ≥ 1, (n = 1, …, N - 1) is implicitly determined, where L n is a positive integer.

[0270] ● In one example, an indicator can be used to indicate each L for n ∈ {1, …, N}\{n ＊}, and n is determined by through and and L n ≥ 1, (n ∈ {1, …, N}\{n ＊}) is implicitly determined, where L n is a positive integer.

[0271] In another example, the selection of L SD basis vectors for each TRPn is reported by a joint indicator or multiple individual indicators in CSI part 2. (Similar to / same as one or more examples described herein). n For example, the indicator for each L (each) SD basis vector has

[0272] ● In one example, the indicator for (each) L n SD basis vectors has a bit payload (bit width), where N1 and N2 are values of (N1, N2) configured by NW 130 through higher layer (RRC) signaling, where n ∈ S or n = 1, …, N.

[0273] ● In one example, the joint indicator for {L n} SD basis vectors has a bit or bit payload.

[0274] In an example, some of the L n associated with the selected TRP are explicitly reported by a joint indicator or multiple individual indicators in CSI part 2, while some of the L n associated with the selected TRP are implicitly reported (or implicitly determined and thus not explicitly reported). The rest is similar to one or more examples described herein.

[0275] In another example, L is selected in each candidate of the SD basis vectors on N TRPstot SD basis vectors. The selection of L SD basis vectors is reported by an indicator with a bit size in CSI part 1 tot SD basis vectors. In this case, L is implicitly determined by counting the number of selected SD basis vectors among the candidate SD basis vectors belonging to each selected TRP n .

[0276] In another example, L tot SD basis vectors are selected from each candidate of the SD basis vectors on N TRPs. The selection of L SD basis vectors is reported by an indicator with a bit size in CSI part 2 tot SD basis vectors. In this case, L is implicitly determined by counting the number of selected SD basis vectors among the candidate SD basis vectors belonging to each selected TRP n .

[0277] In another embodiment, a bitmap of size NN1N2 is used to indicate the SD basis vectors of the selected N TRPs (CSI-RS resources) in the CSI part 2 indication. For example, in the bitmap, "0" means "not selected" for the corresponding SD vector, and "1" means "selected" for the corresponding SD vector. In this case, L can be inferred from the bitmap by calculating the number of selected SD vectors corresponding to each TRP n . In this case, restrictions can be described, such as "UE shall not report CSI when L tot =∑ n L n >L max , where L n is inferred from the bitmap."

[0278] In another embodiment, in one or more embodiments described herein, L n , L tot , L max can be replaced with α n , α tot , α max , where (or ) and ).

[0279] In another embodiment, the UE is configured with codebook-based CSI reporting (e.g., via higher layer CSI-ReportConfig) for C-JT transmission from multiple TRPs, as described in this disclosure, where the codebook parameters (such as α or L, β, p υ or M v) is configured by the higher layer parameters "paramCombination-r18" or "paramCombinationCJT-r18".

[0280] ● In one example, the Rel.16 parameter combination table of "paraCombination-r16" is reused for "paramCombination-r18" (refer to Table 1).

[0281] ● In one example, the Rel.17 parameter combination table of "paraCombination-r17" is reused for "paramCombination-r18" (refer to Table 2).

[0282] ● In one example, a new parameter combination table is used for "paramCombination-r18".

[0283] ● In one example, a table containing existing Rel.16 or Rel.17 parameter combinations and one or more new parameter combinations is used for "paramCombination-r18".

[0284] Any table including at least one combination provided in the (sub)tables of the present disclosure can be an example of the table for "paraCombination-r18".

[0285] In another embodiment, the table for "paramCombination-r18" is designed based on the following parameter candidates:

[0286] ● For L max (or L sum ) candidate values:

[0287] ○ Where and L n is the L for the CSI-RS resource n (TRPn);

[0288] And

[0289] ○ N TRP ∈ {1, 2, 3, 4} is the number of CSI-RS resources (or TRPs), and is configured by NW 130 through higher layer signaling.

[0290] ● For p v (v = 1, 2) candidate values:

[0291] ● For p v (v = 3, 4) candidate values:

[0292] ● Candidate values of β:

[0293] In one example, any table including at least one combination provided in the tables of the present disclosure may be an example of the table of "paraCombination-r18".

[0294] [Table 3]

[0295]

[0296]

[0297]

[0298]

[0299]

[0300]

[0301]

[0302] In Table 3, due to space limitations, we omit the rows that can be clearly calculated (based on the previous rows). In addition, the table index numbers in Table 3 (from 1 to 1200) should only be interpreted as the indexes of the corresponding parameter combinations. That is, the table index number can be any value based on the order of the parameter combinations and the number of parameter combinations in the table.

[0303] In one example, any sub-table of Table 3 can be an example of the "paraCombination-r18" table.

[0304] In another embodiment, any table including at least one parameter combination in the sub-table of Table 3 can be used for the "paramCombination-r18" table, where the sub-table includes the parameter combinations associated with where is a subset of. For example, if the sub-table includes the parameter combinations associated with L in Table 3 max = 8, 10, 12, 14, 16.

[0305] ● In one example, and the sub-table includes the parameter combinations associated with L in Table 3 max = {8, 10, 12, 14, 16}.

[0306] ● In one example, And the sub - table includes parameter combinations associated with L in Table 3 max ={6, 8, 10, 12}

[0307] ● In one example, And the sub - table includes parameter combinations associated with L in Table 3 max ={4, 6, 8}

[0308] ● In one example, And the sub - table includes parameter combinations associated with L in Table 3 max ={2, 4}

[0309] ● In one example, And the sub - table includes parameter combinations associated with L in Table 3 max ={8, 10, 12, 14, 16, 18, 20, 22, 24}

[0310] ● In one example, And the sub - table includes parameter combinations associated with L in Table 3 max ={6, 8, 10, 12, 14, 16, 18}

[0311] ● In one example, And the sub - table includes parameter combinations associated with L in Table 3 max ={4, 6, 8, 10, 12}

[0312] ● In one example, And the sub - table includes parameter combinations associated with L in Table 3 max ={2, 4, 6}

[0313] ● In one example, And the sub - table includes parameter combinations associated with L in Table 3 max ={4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 24}

[0314] ● In one example, And the sub - table includes parameter combinations associated with L in Table 3 max ={3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18}

[0315] ● In one example, And the sub - table includes parameter combinations associated with L in Table 3 max ={2, 3, 4, 5, 6, 7, 8, 10, 12}

[0316] ● In one example, and the sub - table includes parameter combinations associated with L in Table 3 max = {1, 2, 4, 6}.

[0317] In one embodiment, it is possible to define for each value of N TRP = {1, 2, 3, 4} and the sub - table includes parameter combinations for each value of TRP = {1, 2, 3, 4} associated with those in Table 3

[0318] In one example, it can be defined as follows and the sub - table includes parameter combinations for each value of N TRP associated with as follows:

[0319] ● For N TRP = 4,

[0320] ● For N TRP = 3,

[0321] ● For N TRP = 2, and

[0322] ● For N TRP = 1,

[0323] In one example, it can be defined as follows and the sub - table includes parameter combinations for each value of N TRP associated with as follows:

[0324] ● For N TRP = 4,

[0325] ● For N TRP = 3,

[0326] ● For N TRP = 2, and

[0327] ● For N TRP = 1,

[0328] In one example, it can be defined as follows and the sub - table includes parameter combinations for each value of N TRP associated with as follows:​

[0329] ● For N TRP = 4,

[0330] ● For N TRP = 3,

[0331] ● For N TRP = 2, and

[0332] ● For N TRP = 1,

[0333] In another embodiment, any table including at least one parameter combination in the sub - table of Table 3 can be used for the "paramCombination - r18" table, where the sub - table includes parameter combinations associated with associated with, where is a subset of, where For example, if the sub - table includes parameter combinations associated with those in Table 3 associated with.

[0334] ● In one example, and the sub - table includes parameter combinations associated with whether in Table 3 associated with.

[0335] ● In one example, and the sub - table includes parameter combinations associated with whether in Table 3 associated with.

[0336] ● In one example, and the sub - table includes parameter combinations associated with whether in Table 3 associated with.

[0337] ● In one example, and the sub - table includes parameter combinations associated with whether in Table 3 associated with.

[0338] In another embodiment, any table including at least one parameter combination in the sub - table of Table 3 can be used for the "paramCombination - r18" table, where the sub - table includes parameter combinations associated with associated with, where is a subset of. For example, if the sub - table includes parameter combinations associated with those in Table 3 associated with.

[0339] ● In one example, and the sub - table includes parameter combinations associated with those in Table 3 associated with.

[0340] ● In one example, and the sub - table includes parameter combinations associated with those in Table 3 associated with.

[0341] ● In one example, and the sub - table includes parameter combinations associated with those in Table 3 1 associated with.

[0342] ● In one example, and the sub - table includes parameter combinations associated with those in Table 3 1 associated with.

[0343] ● In one example, and the sub - table includes parameter combinations associated with those in Table 3 associated with.

[0344] In another embodiment, any table that includes at least one parameter combination from the sub - table of Table 3 can be used for the "paramCombination - r18" table, where the sub - table includes parameter combinations associated with and and associated with, where defined in one or more of the embodiments described herein, defined in one or more of the embodiments described herein, and defined in one or more of the embodiments described herein.

[0345] In one example, the sub - table includes parameter combinations associated with the following:

[0346] ● For N TRP = 4, and and

[0347] ● For N TRP = 3, and and

[0348] ● For N TRP = 2, and and and

[0349] ● For N TRP = 1, and and

[0350] In another embodiment, a subset of parameter combinations in a table designed for the "paramCombination-r18" table based on Embodiment 1 may be restricted to not be configured based on one or more aspects, such as the number of TRPs (N TRP ), the number of SBs K (numberOfPMI-SubbandsPerCQI-Subband), and the number of CSI-RS ports (N1N2 or P CSI-RS ).

[0351] In one example, under certain conditions, a parameter combination in which L n = 4 and / or 6 for any n may be used / reported (by UE 116) or configured (by NW 130).

[0352] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[0353] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0354] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0355] ● In one example (C4), the condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[0356] ● In one example (C5), the condition corresponds to N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0357] ● In one example (C6), the condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0358] ● In one example (C7), the condition corresponds to N TRP> the case of s, where s is a threshold value that can be fixed, configured, or subject to UE capabilities.

[0359] ● In one example (C8), the condition corresponds to N TRP ≥ s, where s is a threshold value that can be fixed, configured, or subject to UE capabilities.

[0360] ● In one example (C9), the condition corresponds to the case where K < k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[0361] ● In one example (C10), the condition corresponds to the case where K ≤ k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[0362] ● In one example (C11), the condition corresponds to the case where K > k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[0363] ● In one example (C12), the condition corresponds to the case where K ≥ k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[0364] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[0365] ● In one example (C10), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[0366] ● In one example (C11), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[0367] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) such that for any n parameter combination

[0368] ● In one example (C1), this condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[0369] ● In one example (C2), this condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0370] ● In one example (C3), this condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0371] ● In one example (C4), this condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[0372] ● In one example (C5), this condition corresponds to N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0373] ● In one example (C6), this condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0374] ● In one example (C7), this condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0375] ● In one example (C8), this condition corresponds to N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0376] ● In one example (C9), this condition corresponds to the case where K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0377] ● In one example (C10), this condition corresponds to the case where K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0378] ● In one example (C11), this condition corresponds to the case where K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0379] ● In one example (C12), the condition corresponds to the case where K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0380] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[0381] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[0382] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[0383] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) where for any n and / or parameter combinations.

[0384] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[0385] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0386] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0387] ● In one example (C4), the condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[0388] ● In one example (C5), the condition corresponds to N TRP <the case of s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0389] ● In one example (C6), the condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0390] ● In one example (C7), the condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0391] ● In one example (C8), the condition corresponds to N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0392] ● In one example (C9), the condition corresponds to the case of K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0393] ● In one example (C10), the condition corresponds to the case of K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0394] ● In one example (C11), the condition corresponds to the case of K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0395] ● In one example (C12), the condition corresponds to the case of K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0396] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[0397] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[0398] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the R value is 1 (e.g., via higher layer numberOfPMIsubbandPerCQIsubband configuration).

[0399] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) such that for any n and / or and / or a parameter combination of 1.

[0400] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[0401] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0402] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0403] ● In one example (C4), the condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[0404] ● In one example (C5), the condition corresponds to N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0405] ● In one example (C6), the condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0406] ● In one example (C7), the condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0407] ● In one example (C8), the condition corresponds to N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0408] ● In one example (C9), the condition corresponds to the case where K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0409] ● In one example (C10), the condition corresponds to the case where K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0410] ● In one example (C11), the condition corresponds to the case where K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0411] ● In one example (C12), the condition corresponds to the case where K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0412] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[0413] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[0414] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[0415] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) such that for any n, L n = 4 and / or 6 and / or and / or and / or of the parameter combinations.

[0416] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[0417] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0418] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0419] ● In one example (C4), the condition corresponds to N TRP <3 (i.e., N TRP = 1, 2).

[0420] ● In one example (C5), the condition corresponds to N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0421] ● In one example (C6), the condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0422] ● In one example (C7), the condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0423] ● In one example (C8), the condition corresponds to N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0424] ● In one example (C9), the condition corresponds to K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0425] ● In one example (C10), the condition corresponds to K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0426] ● In one example (C11), the condition corresponds to K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0427] ● In one example (C12), the condition corresponds to K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0428] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[0429] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[0430] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[0431] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) such that for any n, L n = 4 and / or 6 and / or and / or and / or a parameter combination of 1.

[0432] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[0433] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0434] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0435] ● In one example (C4), the condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[0436] ● In one example (C5), the condition corresponds to N TRP<The case of s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0437] ● In one example (C6), the condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0438] ● In one example (C7), the condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0439] ● In one example (C8), the condition corresponds to N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0440] ● In one example (C9), the condition corresponds to K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0441] ● In one example (C10), the condition corresponds to K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0442] ● In one example (C11), the condition corresponds to K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0443] ● In one example (C12), the condition corresponds to K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0444] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[0445] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[0446] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the R value is 1 (e.g., via higher layer numberOfPMIsubbandPerCQIsubband configuration).

[0447] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) where for any n and / or and / or and / or and / or and / or a parameter combination of 1.

[0448] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for TRP) = 32.

[0449] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0450] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0451] ● In one example (C4), the condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[0452] ● In one example (C5), the condition corresponds to N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0453] ● In one example (C6), the condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0454] ● In one example (C7), the condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0455] ● In one example (C8), the condition corresponds to N TRPThe case of ≥ s, where s is a threshold value that can be fixed, configured, or subject to UE capabilities.

[0456] ● In one example (C9), the condition corresponds to the case of K < k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[0457] ● In one example (C10), the condition corresponds to the case of K ≤ k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[0458] ● In one example (C11), the condition corresponds to the case of K > k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[0459] ● In one example (C12), the condition corresponds to the case of K ≥ k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[0460] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[0461] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[0462] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[0463] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) where for any n, L n = 4 and / or 6 and / or and / or and / or and / or and / or Parameter combinations of and / or 1.

[0464] ● In one example (C1), this condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[0465] ● In one example (C2), this condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0466] ● In one example (C3), this condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[0467] ● In one example (C4), this condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[0468] ● In one example (C5), this condition corresponds to N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0469] ● In one example (C6), this condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0470] ● In one example (C7), this condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0471] ● In one example (C8), this condition corresponds to N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[0472] ● In one example (C9), this condition corresponds to the case where K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0473] ● In one example (C10), this condition corresponds to the case where K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0474] ● In one example (C11), this condition corresponds to the case where K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[0475] ● In one example (C12), the condition corresponds to the case where K ≥ k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[0476] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., configured via RI restriction).

[0477] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., configured via the higher layer numberOfPMIsubbandPerCQIsubband).

[0478] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., configured via RI restriction), and the value of R is 1 (e.g., configured via the higher layer numberOfPMIsubbandPerCQIsubband).

[0479] In one example, any table constructed in the manner of one of the examples described in the present disclosure and without columns of L max can be an example of the "paraCombination-r18" table.

[0480] For example, a table including at least one combination in the following table can be an example of the "paraCombination-r18" table.

[0481] [Table 4]

[0482]

[0483]

[0484]

[0485] In one embodiment, the table of (p v , β) (which can be one of the possible tables described in the present disclosure) includes at least one of the (p v , β) combinations shown in the following table:

[0486] [Table 5]

[0487]

[0488] In one example, a in C11 is fixed, such as 1 / 2 or (1 / 2 + 3 / 4) / 2 = 5 / 8. In another example, a is 1 / 4 or 1 / 8.

[0489] In one example, b in C12 is fixed, such as 1 / 4 or (1 / 2 + 1 / 4) / 2 = 3 / 8. In another example, b is 1 / 8.

[0490] In one example, for (p v , β), the maximum number of supported combinations in the table is S, such as S = 8, and at least T (where 1 ≤ T ≤ 4) or one or each of the C2 - C5 combinations in Table 5 are included in the maximum S combinations. Additionally, among the remaining (12 - T) combinations in Table 5 (i.e., C1, C7 - C12), at least one combination is included in the maximum S combinations. In one example, each of the C2 - C5 combinations in Table 5 is included in (i.e., T = 4) the maximum S combinations.

[0491] ● In one example, one of the remaining (p v , β) combinations in Table 5 (i.e., C1, C7 - C12) is included in the maximum S combinations. (Examples are omitted.) Examples.)

[0492] ● In one example, two of the remaining (p v , β) combinations in Table 5 (i.e., C1, C7 - C12) are included in the maximum S combinations. (Examples are omitted.) Examples.)

[0493] ● In one example, three of the remaining (p v , β) combinations in Table 5 (i.e., C1, C7 - C12) are included in the maximum S combinations. (Examples are omitted.) Examples.)

[0494] ● In one example, four of the remaining (p v , β) combinations in Table 5 (i.e., C1, C7 - C12) are included in the maximum S combinations. (Examples are omitted.) Examples.)

[0495] ● In one example, five of the remaining (p v , β) combinations in Table 5 (i.e., C1, C7 - C12) are included in the maximum S combinations. (Examples are omitted.) Examples.)

[0496] ● In one example, six of the remaining (p v , β) combinations in Table 5 (i.e., C1, C7 - C12) are included in at most S combinations. (Examples are omitted.)

[0497] ● In one example, each of the remaining (p v , β) combinations in Table 5 (i.e., C1, C7 - C12) is included in at most S combinations.

[0498] In one example, there is a restriction on C7 in Configuration Table 5, where the restriction is associated with {L n} (related to it / based on it).

[0499] ● In one example, when L n ≤ x, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0500] ● In one example, when L n ≤ x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0501] ● In one example, when L n ≥ x, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0502] ● In one example, when L n ≥ x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0503] ● In one example, when L n = x, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0504] ● In one example, when L n = x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0505] ● In one example, when L n = x, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0506] ● In one example, when L n = x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0507] ​● In one example, when L n < is less than x, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0508] ● In one example, when L n < is less than x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0509] ● In one example, when L n > x, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0510] ● In one example, when L n > x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0511] ● In one example, when x ≤ L n ≤ y, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6.

[0512] ● In one example, when x ≤ L n ≤ y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6.

[0513] ● In one example, when x < L n ≤ y, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6.

[0514] ● In one example, when x < L n ≤ y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6.

[0515] ● In one example, when x ≤ L n < y, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6.

[0516] ● In one example, when x ≤ L nWhen x < y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6.

[0517] ● In one example, when x < L n < y, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6.

[0518] ● In one example, when x < L n < y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6.

[0519] ● In one example, when UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0520] ● In one example, when UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0521] ● In one example, when UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0522] ● In one example, when UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0523] ● In one example, when UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0524] ● In one example, when UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0525] ● In one example, when UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0526] ● In one example, when UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0527] ● In one example, when occurs, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0528] ● In one example, when occurs, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0529] ● In one example, when occurs, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0530] ● In one example, when occurs, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6.

[0531] ● In one example, when occurs, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6.

[0532] ● In one example, when occurs, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6.

[0533] ● In one example, when occurs, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6.

[0534] ● In one example, when occurs, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6.

[0535] ● In one example, when occurs, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6.

[0536] ● In one example, when occurs, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or x = 6.

[0537] ● In one example, when occurs, UE 116 is expected to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, x = 4, or x = 6.

[0538] ● In one example, when occurs, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6.

[0539] ● In one example, when ∑ n L n ≤ x × t or ∑ n L n ≤ z, UE 116 is expected to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z can only be one of z = 2, z = 4, …, or z = 24.

[0540] ● In one example, when ∑ n L n ≤ x × t or ∑ n L n ≤ z, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z can only be one of z = 2, z = 4, …, or z = 24.

[0541] ● In one example, when ∑ n L n ≥ x × t or ∑ n L n ≥ z, UE 116 is expected to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z can only be one of z = 2, z = 4, …, or z = 24.

[0542] ● In one example, when ∑ n L n ≥ x × t or ∑ n L n ≥ z, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z can only be one of z = 2, z = 4, …, or z = 24.

[0543] ● In one example, when ∑ n L n = x × t or ∑ n L n = z, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z can only be one of z = 2, z = 4, …, or z = 24.

[0544] ● In one example, when ∑ n L n = x × t or ∑ n L n = z, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z can only be one of z = 2, z = 4, …, or z = 24.

[0545] ● In one example, when ∑ n L n < x × t or ∑ n L n < z, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z can only be one of z = 2, z = 4, …, or z = 24.

[0546] ● In one example, when ∑ n L n < x × t or ∑ n L n < z, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z can only be one of z = 2, z = 4, …, or z = 24.

[0547] ● In one example, when ∑ n L n > x × t or ∑ n L n > z, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z can only be one of z = 2, z = 4, …, or z = 24.

[0548] ● In one example, when ∑ n L n > x × t or ∑ n L n > z, the UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z can only be one of z = 2, z = 4, …, or z = 24.

[0549] ● In one example, when x × t ≤ ∑ n L n ≤ y × t or z1 ≤ ∑ n L n ≤ z2, the UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z1 can only be one of z = 2, z = 4, …, or z = 24. For example, z2 can only be one of z = 2, z = 4, …, or z = 24.

[0550] ● In one example, when x × t ≤ ∑ n L n ≤ y × t or z1 ≤ ∑ n L n ≤ z2, the UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z1 can only be one of z = 2, z = 4, …, or z = 24. For example, z2 can only be one of z = 2, z = 4, …, or z = 24.

[0551] ● In one example, when x × t < ∑ n L n ≤ y × t or z1 < ∑ n L n ≤ z2, the UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z1 can only be one of z = 2, z = 4, …, or z = 24. For example, z2 can only be one of z = 2, z = 4, …, or z = 24.

[0552] ● In one example, when x × t < ∑n L n ≤ y × t or z1 < ∑ n L n ≤ z w When this is the case, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, x can only be one of y = 2, x = 4, or y = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z1 can only be one of z = 2, z = 4, …, or z = 24. For example, z2 can only be one of z = 2, z = 4, …, or z = 24.

[0553] ● In one example, when x × t ≤ ∑ n L n < y × t or z1 ≤ ∑ n L n < z2, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z1 can only be one of z = 2, z = 4, …, or z = 24. For example, z2 can only be one of z = 2, z = 4, …, or z = 24.

[0554] ● In one example, when x × t ≤ ∑ n L n < y × t or z1 ≤ ∑ n L n < z2, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z1 can only be one of z = 2, z = 4, …, or z = 24. For example, z2 can only be one of z = 2, z = 4, …, or z = 24.

[0555] ● In one example, when x × t < ∑ n L n < y × t or z1 < ∑ n L n < z2, UE 116 expects to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z1 can only be one of z = 2, z = 4, …, or z = 24. For example, z2 can only be one of z = 2, z = 4, …, or z = 24.

[0556] ● In one example, when x×t < ∑ n L n < y×t or z1 < ∑ n L n < z2, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 2, x = 4, or x = 6. For example, y can only be one of y = 2, y = 4, or y = 6. Here, t can be fixed, for example, t = N TRP or 3. For example, z1 can only be one of z = 2, z = 4, …, or z = 24. For example, z2 can only be one of z = 2, z = 4, …, or z = 24.

[0557] ● In one example, when s ∈ S0 is configured, UE 116 is expected to be configured with C7, where S0 is an index or a set of multiple indexes, and each index indicates or corresponds to a combination from the table of {L n} in {L n}.

[0558] ● In one example, when s ∈ S0 is configured, UE 116 is not expected to be configured with C7, where S0 is an index or a set of multiple indexes, and each index indicates or corresponds to a combination from the table of {L n} in {L n}.

[0559] In one example, S0 can be combined according to (p v , β), that is, the case of C7. For example, the link between the list / table of combinations of {L n} (which can be one of the possible tables described in the present disclosure) and the list / table of combinations of (p v , β) (which can be one of the possible tables described in the present disclosure) can be achieved by pairing each combination of (p v , β) with at least one combination of {L n}. For example, the index sets S0, …, S S-1 can be used to link each combination of (p v , β) with at least one combination of {L n}.

[0560] In one example, there are restrictions on configuring C7 according to one of the examples herein. Additionally, this restriction is optional for the UE, that is, this restriction is turned on / off depending on the UE's capabilities. UE 116 reports its capabilities regarding the restriction, whether necessary or not, and then NW 130 follows the reported UE capabilities. For the restriction in each example, the restriction is either UE - optional or a UE capability.

[0561] In one example, there are restrictions on configuring C7 according to one of the examples herein. Additionally, C7 is UE - optional, i.e., C7 can be configured according to UE capabilities. UE 116 reports its capability to support C7, and then only NW 130 can configure C7. This UE - optional feature can correspond to separate UE capabilities.

[0562] In one example, there are restrictions on configuring C7 in Table 5, where the restriction is associated with N L (related to it / based on it).

[0563] ● In one example, when N L ≤ x, UE 116 is expected to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4.

[0564] ● In one example, when N L ≤ x, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4.

[0565] ● In one example, when N L ≥ x, UE 116 is expected to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4.

[0566] ● In one example, when N L ≥ x, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4.

[0567] ● In one example, when N L = x, UE 116 is expected to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4.

[0568] ● In one example, when N L = x, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4.

[0569] ● In one example, when N L < x, UE 116 is expected to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4.

[0570] ● In one example, when N L < x, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4.

[0571] ● In one example, when N LWhen >x, the UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4.

[0572] ● In one example, when N L When >x, the UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4.

[0573] ● In one example, when x ≤ N L ≤ y, the UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4. For example, y can only be one of x = 1, y = 2, or x = 4.

[0574] ● In one example, when x ≤ N L ≤ y, the UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4. For example, y can only be one of y = 1, x = 2, or x = 4.

[0575] ● In one example, when x < N L ≤ y, the UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4. For example, y can only be one of y = 1, y = 2, or y = 4.

[0576] ● In one example, when x < N L ≤ y, the UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4. For example, y can only be one of y = 1, y = 2, or y = 4.

[0577] ● In one example, when x ≤ N L < y, the UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4. For example, y can only be one of y = 1, y = 2, or y = 4.

[0578] ● In one example, when x ≤ N L < y, the UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4. For example, y can only be one of y = 1, y = 2, or y = 4.

[0579] ● In one example, when x < N L < y, the UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4. For example, y can only be one of y = 1, y = 2, or y = 4.

[0580] ● In one example, when x < N LWhen y, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 1, x = 2, or x = 4. For example, y can only be one of y = 1, y = 2, or y = 4.

[0581] In one example, there are restrictions on configuring C7 according to one of the examples herein. Additionally, this restriction is UE - optional, that is, this restriction is turned on / off depending on UE capabilities. UE 116 reports its capabilities regarding the restriction, whether necessary or not, and then NW 130 follows the reported UE capabilities. For the restrictions in each example, the restriction is UE - optional or a UE capability.

[0582] In one example, there are restrictions on configuring C7 according to one of the examples herein. Additionally, C7 is UE - optional, that is, C7 can be configured according to UE capabilities. UE 116 reports its capability to support C7, and then only NW 130 can configure C7. This UE - optional feature can correspond to a separate UE capability.

[0583] In one example, there are restrictions on C7 in Table 5, where the restriction is associated with P CSI-RS (related to it / based on it). In one example, P CSI-RS is the number of CSI - RS ports per CSI - RS resource (per TRP).

[0584] ● In one example, when P CSI-RS ≤x, UE 116 is expected to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32.

[0585] ● In one example, when P CSI-RS ≤x, UE 116 is not expected to be configured with C7. For example, x can only be one of xx = 4, x = 8, x = 12, x = 16, x = 24, or x = 32.

[0586] ● In one example, when P CSI-RS ≥x, UE 116 is expected to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32.

[0587] ● In one example, when P CSI-RS ≥x, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32.

[0588] ● In one example, when P CSI-RSWhen P = x, UE 116 expects to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32.

[0589] ● In one example, when P CSI-RS = x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32.

[0590] ● In one example, when P CSI-RS < x, UE 116 expects to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32.

[0591] ● In one example, when P CSI-RS < x, UE 116 does not expect to be configured with C7. For example, x can only be one of xx = 4, x = 8, x = 12, x = 16, x = 24, or x = 32.

[0592] ● In one example, when P CSI-RS > x, UE 116 expects to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32.

[0593] ● In one example, when P CSI-RS > x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32.

[0594] ● In one example, when x ≤ P CSI-RS ≤ y, UE 116 expects to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32. For example, y can only be one of y = 4, x = 8, y = 12, y = 16, x = 24, or x = 32.

[0595] ● In one example, when x ≤ P CSI-RS ≤ x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32. For example, y can only be one of x = 4, x = 8, y = 12, x = 16, x = 24, or x = 32.

[0596] ● In one example, when x < P CSI-RSWhen ≤ y, UE 116 expects to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32. For example, y can only be one of y = 4, x = 8, y = 12, y = 16, x = 24, or x = 32.

[0597] ● In one example, when x < P CSI-RS When ≤ x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32. For example, y can only be one of y = 4, x = 8, y = 12, x = 16, x = 24, or x = 32.

[0598] ● In one example, when x ≤ P CSI-RS < y, UE 116 expects to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32. For example, y can only be one of y = 4, y = 8, y = 12, y = 16, y = 24, or y = 32.

[0599] ● In one example, when x ≤ P CSI-RS < y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32. For example, y can only be one of y = 4, y = 8, y = 12, y = 16, y = 24, or y = 32.

[0600] ● In one example, when x < P CSI-RS < y, UE 116 expects to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32. For example, y can only be one of y = 4, y = 8, y = 12, y = 16, y = 24, or y = 32.

[0601] ● In one example, when x < P CSI-RS < y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 4, x = 8, x = 12, x = 16, x = 24, or x = 32. For example, y can only be one of y = 4, y = 8, y = 12, y = 16, y = 24, or y = 32.

[0602] In one example, there are restrictions on configuring C7 according to one of the examples herein. Additionally, this restriction is optional for the UE, i.e., this restriction is turned on / off depending on the UE's capabilities. UE 116 reports its capabilities regarding the restriction, whether necessary or not, and then NW 130 follows the reported UE capabilities. For the restriction in each example, the restriction is either UE - optional or a UE capability.

[0603] In one example, there are restrictions on configuring C7 according to one of the examples herein. Additionally, C7 is UE - optional, i.e., C7 can be configured according to UE capabilities. UE 116 reports its capability to support C7, and then only NW 130 can configure C7. This UE - optional feature can correspond to separate UE capabilities.

[0604] In one example, there are restrictions on C7 in Table 5, where the restriction is associated with (related to / based on) v, and v is the number of layers, i.e., the rank.

[0605] ● In one example, when v ≤ x, UE 116 is expected to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0606] ● In one example, when v ≤ x, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0607] ● In one example, when v ≥ x, UE 116 is expected to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0608] ● In one example, when v ≥ x, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0609] ● In one example, when v = x, UE 116 is expected to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0610] ● In one example, when v = x, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0611] ● In one example, when v < x, UE 116 is expected to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0612] ● In one example, when v < x, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0613] ● In one example, when v > x, UE 116 is expected to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0614] ● In one example, when v > x, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0615] ● In one example, when x ≤ v ≤ y, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0616] ● In one example, when x ≤ v ≤ y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0617] ● In one example, when x < v ≤ y, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0618] ● In one example, when x < v ≤ y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0619] ● In one example, when x ≤ v < y, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0620] ● In one example, when x ≤ v < y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0621] ● In one example, when x < v < y, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0622] ● In one example, when x < v < y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0623] In one example (D4-a), there is a restriction on configuring C7 according to one of the examples herein. Additionally, this restriction is UE optional, i.e., this restriction is turned on / off depending on UE capabilities. UE 116 reports its capabilities regarding the restriction, whether necessary or not, and then NW 130 follows the reported UE capabilities. For the restriction in each example, the restriction is UE optional or a UE capability.

[0624] In one example, there is a restriction on configuring C7 according to one of the examples herein. Additionally, C7 is UE optional, i.e., C7 can be configured according to UE capabilities. UE 116 reports its capability to support C7, and then only NW 130 can configure C7. This UE optional feature can correspond to a separate UE capability.

[0625] In one example, there is a restriction on C7 in Table 5, where the restriction is associated with (related to / based on) R, where R is the number of per-subband precoders.

[0626] ● In one example, when R = 1, UE 116 expects to be configured with C7.

[0627] ● In one example, when R = 2, UE 116 does not expect to be configured with C7.

[0628] ● In one example, when R ≤ x or R < x, UE 116 expects to be configured with C7. Here, x can be fixed or configured or subject to UE capabilities.

[0629] ● In one example, when R > x or R ≥ x, UE 116 does not expect to be configured with C7. Here, x can be fixed or configured or subject to UE capabilities.

[0630] In one example, there is a restriction on configuring C7 according to one of the examples herein. Additionally, this restriction is UE optional, i.e., this restriction is turned on / off depending on UE capabilities. UE 116 reports its capabilities regarding the restriction, whether necessary or not, and then NW 130 follows the reported UE capabilities. For the restriction in each example, the restriction is UE optional or a UE capability.

[0631] In one example, there is a restriction on configuring C7 according to one of the examples herein. Additionally, C7 is UE optional, i.e., C7 can be configured according to UE capabilities. UE 116 reports its capability to support C7, and then only NW 130 can configure C7. This UE optional feature can correspond to a separate UE capability.

[0632] In one example, there is a restriction on C7 in Table 5, where the restriction is associated with N TRP related to (related to / based on) it, where NTRP is the number of TRPs, i.e., the number of CSI-RS resources.

[0633] ● In one example, when N TRP ≤ x, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0634] ● In one example, when N TRP ≤ x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0635] ● In one example, when N TRP ≥ x, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0636] ● In one example, when N TRP ≥ x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0637] ● In one example, when N TRP = x, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0638] ● In one example, when N TRP = x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0639] ● In one example, when N TRP < x, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0640] ● In one example, when N TRP < x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0641] ● In one example, when N TRP > x, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0642] ● In one example, when N TRP > x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4.

[0643] ● In one example, when x ≤ N TRP ≤ y, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0644] ● In one example, when x ≤ N TRP ≤ y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0645] ● In one example, when x < N TRP ≤ y, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0646] ● In one example, when x < N TRP ≤ y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0647] ● In one example, when x ≤ N TRP < y, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0648] ● In one example, when x ≤ N TRP < y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0649] ● In one example, when x < N TRP < y, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0650] ● In one example, when x < N TRP < y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, x = 2, x = 3, or x = 4. For example, y can only be one of y = 1, y = 2, y = 3, or y = 4.

[0651] In one example, there are restrictions on the configuration according to one of the examples herein. Additionally, the restriction is UE - optional, i.e., the restriction is turned on / off depending on UE capabilities. UE 116 reports its capabilities regarding the restriction, whether necessary or not, and then NW 130 follows the reported UE capabilities. For the restriction in each example, the restriction is UE - optional or a UE capability.

[0652] In one example, there are restrictions on the configuration of C7 according to one of the examples herein. Additionally, C7 is UE - optional, i.e., C7 can be configured according to UE capabilities. UE 116 reports its capability to support C7, and then only NW 130 can configure C7. This UE - optional feature can correspond to a separate UE capability.

[0653] In one example, there are restrictions on C7 in Table 5, where the restriction is associated with (related to / based on) K, and K is the number of sub - bands.

[0654] ● In one example, when K ≤ x, UE 116 is expected to be configured with C7. For example, x can only be one of x = 1, …, or x = 19.

[0655] ● In one example, when K ≤ x, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 1, …, or x = 19.

[0656] ● In one example, when K ≥ x, UE 116 is expected to be configured with C7. For example, x can only be one of x = 1, …, or x = 19.

[0657] ● In one example, when K ≥ x, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 1, …, or x = 19.

[0658] ● In one example, when K = x, UE 116 is expected to be configured with C7. For example, x can only be one of x = 1, …, or x = 19.

[0659] ● In one example, when K = x, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 1, …, or x = 19.

[0660] ● In one example, when K < x, UE 116 is expected to be configured with C7. For example, x can only be one of x = 1, …, or x = 19.

[0661] ● In one example, when K < x, UE 116 is not expected to be configured with C7. For example, x can only be one of x = 1, …, or x = 19.

[0662] ● In one example, when K > x, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, …, or x = 19.

[0663] ● In one example, when K > x, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, …, or x = 19.

[0664] ● In one example, when x ≤ K ≤ y, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, …, or x = 19. For example, y can only be one of y = 1, …, or y = 19.

[0665] ● In one example, when x ≤ K ≤ y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, …, or x = 19. For example, y can only be one of y = 1, …, or y = 19.

[0666] ● In one example, when x < K ≤ y, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, …, or x = 19. For example, y can only be one of y = 1, …, or y = 19.

[0667] ● In one example, when x < K ≤ y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, …, or x = 19. For example, y can only be one of y = 1, …, or y = 19.

[0668] ● In one example, when x ≤ K < y, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, …, or x = 19. For example, y can only be one of y = 1, …, or y = 19.

[0669] ● In one example, when x ≤ K < y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, …, or x = 19. For example, y can only be one of y = 1, …, or y = 19.

[0670] ● In one example, when x < K < y, UE 116 expects to be configured with C7. For example, x can only be one of x = 1, …, or x = 19. For example, y can only be one of y = 1, …, or y = 19.

[0671] ● In one example, when x < K < y, UE 116 does not expect to be configured with C7. For example, x can only be one of x = 1, …, or x = 19. For example, y can only be one of y = 1, …, or y = 19.

[0672] In one example, there are restrictions on configuring according to one of the examples herein. Additionally, this restriction is optional for the UE, i.e., this restriction is turned on / off depending on UE capabilities. UE 116 reports its capabilities regarding the restriction, whether necessary or not, and then NW 130 follows the reported UE capabilities. For the restriction in each example, the restriction is UE - optional or a UE capability.

[0673] In one example, there are restrictions on configuring C7 according to one of the examples herein. Additionally, C7 is UE - optional, i.e., C7 can be configured according to UE capabilities. UE 1116 reports its capability to support C7, and then only NW 130 can configure C7. This UE - optional feature can correspond to a separate UE capability.

[0674] In one example (any combination of one or more of the examples described herein), there are multiple restrictions on configuring C7 in Table 5, where the multiple restrictions include at least one of the restrictions D1 - D7 (D1 - a to D7 - a, D1 - b to D7 - b) described herein. The multiple restrictions are associated with (related to / based on) {L n}, N L , P CSI-RS , v, R, N TRP and / or K.

[0675] ● In one example, there are 2 restrictions (r1, r2) on configuring C7, and these restrictions are associated with a parameter or a combination of parameters, where r i is one of {L n}, N L , P CSI-RS , v, R, N TRP and K.

[0676] ○ In one example, (r1, r2) = (N L , {L n}).

[0677] ○ In one example, (r1, r2) = (N L , P CSI-RS ).

[0678] ○ In one example, (r1, r2) = (P CSI-RS , {L n}).

[0679] ○ In one example, (r1, r2) = (N L , N TRP ).

[0680] ○ In one example, (r1, r2) = ({L n}, N TRP ).

[0681] ○ In one example, (r1, r2) = (P CSI-RS , N TRP ).

[0682] ● In one example, there are 3 restrictions (r1, r2, r3) on configuration C7, and these restrictions are associated with parameters or combinations of parameters, where r i is one of {L n}, N L , P CSI-RS , v, R, N TRP and K.

[0683] ○ In one example, (r1, r2, r3) = (N L , {L n}, P CSI-RS ).

[0684] ○ In one example, (r1, r2, r3) = (N L , {L n}, N TRP ).

[0685] ○ In one example, (r1, r2, r3) = (N L , {L n}, P CSI-RS ).

[0686] ○ In one example, (r1, r2, r3) = (N TRP , {L n}, P CSI-RS ).

[0687] ● In one example, there are 4 restrictions (r1,.., r4) on configuration C7, and these restrictions are associated with parameters or combinations of parameters, where r i is one of {L n}, N L , P CSI-RS , v, R, N TRP and K.

[0688] ○ In one example, (r1,.., r4) = (N L , {L n}, P CSI-RS , N TRP ).

[0689] ● In one example, there are q restrictions (r1,…, r q ) on configuration C7, and these restrictions are associated with parameters or combinations of parameters, where r i is one of {L n}, NL 、P CSI-RS 、v, R, N TRP and one of K, and q ∈ {2,…,7}.

[0690] In one example, in addition to the multiple restrictions described herein, the combination C7 can be configured only when the UE 116 reports its individual UE capabilities that it can support C7 through the UE.

[0691] ● In one example (similar to one or more examples described herein), there is a restriction on C8 in Configuration Table 5, where the restriction is associated with {L n}, N L 、P CSI-RS 、v, R, N TRP and / or K (related to it / based on it).

[0692] ● In one example (similar to one or more examples described herein), there is a restriction on C9 in Configuration Table 5, where the restriction is associated with {L n}, N L 、P CSI-RS 、v, R, N TRP and / or K (related to it / based on it).

[0693] ● In one example (similar to one or more examples described herein), there is a restriction on C10 in Configuration Table 5, where the restriction is associated with {L n}, N L 、P CSI-RS 、v, R, N TRP and / or K (related to it / based on it).

[0694] ● In one example (similar to one or more examples described herein), there is a restriction on C11 in Configuration Table 5, where the restriction is associated with {L n}, N L 、P CSI-RS 、v, R, N TRP and / or K (related to it / based on it).

[0695] ● In one example (similar to one or more examples described herein), there is a restriction on C12 in Configuration Table 5, where the restriction is associated with {L n}, N L 、P CSI-RS 、v, R, N TRP and / or K (related to it / based on it).

[0696] ● In one example (similar to one or more examples described herein), there is a restriction on C6 in Configuration Table 5, where the restriction is associated with {Ln , N L , P CSI-RS , v, R, N TRP is associated with (related to / based on) and / or K.

[0697] ● In one example (similar to one or more examples described herein), there is a restriction on C5 in configuration table 5, where the restriction is related to {L n , N L , P CSI-RS , v, R, N TRP is associated with (related to / based on) and / or K.

[0698] In another embodiment, regarding the selection of SD basis vectors for (Rel - 18) type II codebook refinement for CJT mTRP, the value of L max (where ) is configured by NW 130, for example, through high - layer (RRC) signaling, or the relative values of {L n , n = 1,..., N TRP} are reported by UE 116, where N TRP is the number of TRPs (CSI - RS resources) configured by NW 130. The relative values of {L n , n = 1,..., N TRP} can be selected from a table (or by using a combined indicator) and reported in CSI part 1 (of the two - part CSI including CSI part 1 and CSI part 2).

[0699] In one example, when N TRP is configured, UE 116 can be configured to select N (≤ N TRP ) from N TRP TRPs and report information about the selection of N TRPs (e.g., a bitmap of length N TRP ) in CSI part 1. For the selected N TRPs, the associated L n values are selected and indicated by an indicator. The indicator can be included in CSI part 1 or CSI part 2.

[0700] For each table to be described in this disclosure, another table (i.e., the table with blanks replaced by 0 values) can be used as another example for each relevant embodiment.

[0701] In one example, each L n is selected from {2, 4} for the selected N TRPs, and table 6 can be used for the {L n} values (or L tot = ∑ n L n)。In one example, only a subset of the table is used / configured for {L n} reporting. For example, the part of the table corresponding to L tot >t cannot be used for {L n} reporting, where t is a threshold that can be fixed (e.g., 8, 10, or 12) or configured or reported by UE 116 (via UE capabilities).

[0702] [Table 6]

[0703]

[0704]

[0705] In one example, the UE evaluates the sub - table of Table 6 associated with N ≤ N TRP and selects an index in the sub - table.

[0706] ● For example, when N TRP = 4 is configured by higher - layer signaling, UE 116 evaluates the entire Table 6 and selects / reports an index. In this case, an indicator with bits is required to indicate the {L n} value.

[0707] ● For example, when N TRP = 3 is configured by higher - layer signaling, UE 116 evaluates the sub - table of Table 6 with indices from 1 to 14 (these indices are associated with N ≤ N TRP = 3), and selects / reports an index. In this case, an indicator with bits is required to indicate the {L n} value.

[0708] ● For example, when N TRP = 2 is configured by higher - layer signaling, UE 116 evaluates the sub - table of Table 6 with indices from 1 to 6 (these indices are associated with N ≤ N TRP = 2), and selects / reports an index. In this case, an indicator with bits is required to indicate the {L n} value.

[0709] ● For example, when N TRP = 1 is configured by higher - layer signaling, UE 116 evaluates the sub - table of Table 6 with indices from 1 to 2 (these indices are associated with N ≤ N TRP = 1), and selects / reports an index. In this case, an indicator with bits is required to indicate the {L n} value.

[0710] When N < N TRP is selected (via the N TRP bit - map), the indices of the selected TRP (or CSI - RS resource) can be remapped to 1 to N, which will correspond to the indices of the selected {L n}. In one example, from the lowest index to the highest index of the selected TRP, their indices are remapped to 1 to N. For example, when N TRP = 4 and the 4 - bit bitmap indicator selected for the TRP is "0101" (assuming the least significant bit (LSB) corresponds to TRP 1... the most significant bit (MSB) corresponds to TRP 4), the selected TRP1 and TRP 3 are associated with L1 and L2 respectively. In another example, from the highest index to the lowest index of the selected TRP, their indices are remapped to 1 to N. For example, when N TRP = 4 and the 4 - bit bitmap indicator selected for the TRP is "0101" (assuming the LSB corresponds to TRP 1... the MSB corresponds to TRP 4), the selected TRP 3 and TRP 1 are associated with L1 and L2 respectively.

[0711] In one example, UE 116 should not report any index associated with N′≠N, i.e., any index not associated with the number of selected TRPs.

[0712] In one embodiment, the value of L tot is reported in CSI part 1, and the {L n} value can be reported in CSI part 2 (e.g., via a separate indicator or via a joint indicator).

[0713] In one example:

[0714] ● When N TRP = 2 (or N = 2), L tot is selected from {2, 4, 6, 8} and reported in CSI part 1, and the {L tot} value is selected from the sub - table in Table 6 associated with the selected value of L n and reported in CSI part 2.

[0715] ● When N TRP = 3 (or N = 3), L tot is selected from {2, 4, 6, 8, 10, 12} and reported in CSI part 1, and the {L tot} value is selected from the sub - table in Table 6 associated with the selected value of L n and reported in CSI part 2.

[0716] ● When N TRPWhen N = 4 (or n = 4), L is selected from {2, 4, 6, 8, 10, 12, 14, 16} tot and reported in CSI part 1, and {L} values are selected from the sub - table associated with the selected value of L in Table 6 tot and reported in CSI part 2. n}

[0717] In another example / embodiment, in addition to {2, 4}, 0 is also allowed for L. For example, Table 7 can be used for one or more examples / embodiments described herein or examples / embodiments related to Table 6 described herein. n

[0718] [Table 7]

[0719]

[0720]

[0721] In one embodiment, the UE evaluates the sub - table associated with {L} in Table 6 such that L≥L when n1 < n2 (non - increasing order), as shown in Table 8, and selects an index in the sub - table. n} n1 ≥L n2 (non - increasing order), as shown in Table 8, and selects an index in the sub - table.

[0722] [Table 8]

[0723]

[0724] In one example, the sorting of the TRP can be configured by the NW 130 through, for example, RRC, MAC CE, or downlink control information (DCI).

[0725] In one embodiment, the UE evaluates a sub - table including at least one row in Table 6 or Table 7.

[0726] In one example, each L n is selected from {2, 4, 6} for the selected N TRPs, and Table 9 can be used for {L} values (or L n =∑ tot L n L n ). In one example, only a subset of the table is used / configured for {L} reporting. For example, the part of the table where L n >r cannot be used for {L} reporting, where t is a threshold, which can be fixed (e.g., 18 or 20 or 22 or 24), or configured, or reported by the UE 116 (through UE capabilities). tot >r n} reporting, where t is a threshold, which can be fixed (e.g., 18 or 20 or 22 or 24), or configured, or reported by the UE 116 (through UE capabilities).

[0727] ​[Table 9]

[0728]

[0729]

[0730]

[0731]

[0732]

[0733] In one example, UE 116 evaluates the sub-table of Table 9 associated with N ≤ B TRP and selects an index in the sub-table.

[0734] ● For example, when B TRP = 4 is configured by higher layer signaling, UE 116 evaluates the entire Table 9 and selects / reports an index. In this case, an indicator with bits is required to indicate the {L n} value.

[0735] ● For example, when B TRP = 3 is configured by higher layer signaling, UE 116 evaluates the sub-table of Table 9 with indices from index 1 to index 39 (these indices are associated with N ≤ N TRP = 3), and selects / reports an index. In this case, an indicator with bits is required to indicate the {L n} value.

[0736] ● For example, when N TRP = 2 is configured by higher layer signaling, UE 116 evaluates the sub-table of Table 9 with indices from index 1 to index 12 (these indices are associated with N ≤ N TRP = 2), and selects / reports an index. In this case, an indicator with bits is required to indicate the {L n} value.

[0737] ● For example, when N TRP = 1 is configured by higher layer signaling, UE 116 evaluates the sub-table of Table 9 with indices from index 1 to index 3 (these indices are associated with N ≤ N TRP = 1), and selects / reports an index. In this case, an indicator with bits is required to indicate the {L n} value.

[0738] When N < N TRP is selected (by N TRPbitmap), the indices of the selected TRPs (or CSI-RS resources) can be remapped to 1 to N, which will correspond to the indices of the selected {L n}. In one example, from the lowest index to the highest index of the selected TRPs, their indices are remapped to 1 to N. For example, when N tRP = 4 and the 4-bit bitmap indicator selected for the TRPs is "0101" (assuming the LSB corresponds to TRP 1... MSB corresponds to TRP 4), the selected TRPs 1 and 3 are associated with L1 and L2 respectively. In another example, from the highest index to the lowest index of the selected TRPs, their indices are remapped to 1 to N. For example, when N TRP = 4 and the 4-bit bitmap indicator selected for the TRPs is "0101" (assuming the LSB corresponds to TRP 1... MSB corresponds to TRP 4), the selected TRPs 3 and 1 are associated with L1 and L2 respectively.

[0739] In one example, UE 116 should not report any indices associated with N' ≠ N, i.e., any indices not associated with the number of selected TRPs.

[0740] In one embodiment, the value of L is reported in CSI part 1, and the value of {L tot} can be reported in CSI part 2 (e.g., via a separate indicator or via a combined indicator). n} value (e.g., via a separate indicator or via a combined indicator).

[0741] In one example:

[0742] ● When N TRP = 2 (or N = 2), L is selected from {2, 4, 6, 8, 10, 12} and reported in CSI part 1, and {L tot} values are selected from the sub-table associated with the selected value of L in Table 6 and reported in CSI part 2. tot} value and reported in CSI part 2. n} value and reported in CSI part 2.

[0743] ● When N TRP = 3 (or N = 3), L is selected from {2, 4, 6, 8, 10, 12, 14, 16, 18} and reported in CSI part 1, and {L tot} values are selected from the sub-table associated with the selected value of L in Table 6 and reported in CSI part 2. tot} value and reported in CSI part 2. n} value and reported in CSI part 2.

[0744] ● When N TRP = 4 (or N = 4), L is selected from {2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24}tot and report it in CSI part 1, and select the {L tot} value associated with the selected value from the sub-table of Table 6 related to L n} and report it in CSI part 2.

[0745] In one embodiment, the UE evaluates the sub-table of Table 9 associated with {L n} such that when n1 < n2, L n1 ≥ L n2 (non-increasing order), (in a similar manner as shown in Table 8), and select an index in the sub-table.

[0746] In one example, the sorting of the TRP can be configured by the NW 130 via, for example, RRC, MAC CE, or DCI.

[0747] In another example / embodiment, in addition to {2, 4, 6}, L n may also allow 0. For example, Table 9 can be used for the example / embodiment described herein or the example / embodiment related to Table 10 described herein.

[0748] [Table 10]

[0749]

[0750]

[0751]

[0752]

[0753]

[0754] In one embodiment, the UE evaluates a sub-table including at least one row in Table 9 or Table 10.

[0755] In one example, each L n is selected from {1, 2, 4} for the selected N TRPs, and Table 11 can be used for the {L n} value (or L tot = ∑ n L n ). In one example, only a subset of the table is used / configured for {L n} reporting. For example, the part of the table where L tot > t cannot be used for {L n} reporting, where t is a threshold, which can be fixed (e.g., 12, 14, or 16) or configured or reported by the UE 116 (via UE capabilities).

[0756] [Table 11]

[0757]

[0758]

[0759]

[0760]

[0761]

[0762] In one example, the UE evaluates the sub - table associated with N ≤ N TRP in Table 11 and selects an index in the sub - table.

[0763] ● For example, when N TRP = 4 is configured by higher - layer signaling, the UE 116 evaluates the entire Table 11 and selects / reports an index. In this case, an indicator with bits is required to indicate the {L n} value.

[0764] ● For example, when N TRP = 3 is configured by higher - layer signaling, the UE 116 evaluates the sub - table of Table 11 with indices from index 1 to index 39 (these indices are associated with N ≤ N TRP = 3), and selects / reports an index. In this case, an indicator with bits is required to indicate the {L n} value.

[0765] ● For example, when N TRP = 2 is configured by higher - layer signaling, the UE 116 evaluates the sub - table of Table 11 with indices from index 1 to index 12 (these indices are associated with N ≤ N TRP = 2), and selects / reports an index. In this case, an indicator with bits is required to indicate the {L n} value.

[0766] ● For example, when N TRP = 1 is configured by higher - layer signaling, the UE 116 evaluates the sub - table of Table 11 with indices from index 1 to index 3 (these indices are associated with N ≤ N TRP = 1), and selects / reports an index. In this case, an indicator with bits is required to indicate the {L n} value.

[0767] When N < N TRP is selected (by NTRP bitmap), the index of the selected TRP (or CSI-RS resource) can be remapped to 1 to N, which will correspond to the index of the selected {L n}. In one example, from the lowest index to the highest index of the selected TRP, their indices are remapped to 1 to N. For example, when N TRP = 4 and the 4-bit bitmap indicator selected for the TRP is "0101" (assuming the LSB corresponds to TRP 1... the MSB corresponds to TRP 4), the selected TRP 1 and TRP 3 are associated with L1 and L2 respectively. In another example, from the highest index to the lowest index of the selected TRP, their indices are remapped to 1 to N. For example, when N TRP = 4 and the 4-bit bitmap indicator selected for the TRP is "0101" (assuming the LSB corresponds to TRP 1... the MSB corresponds to TRP 4), the selected TRP 3 and TRP 1 are associated with L1 and L2 respectively.

[0768] In one example, UE 116 should not report any index associated with N' ≠ N, that is, any index not associated with the number of selected TRPs.

[0769] In one embodiment, the value of L is reported in CSI part 1, and the value of {L tot} can be reported in CSI part 2 (e.g., through a separate indicator or through a combined indicator). n} value (e.g., through a separate indicator or through a combined indicator).

[0770] In one example:

[0771] ● When N TRP = 2 (or N = 2), L is selected from {1, 2, 3, 4, 5, 6, 8} and reported in CSI part 1, and the value of {L tot} is selected from the sub-table associated with the selected value of L in Table 6 and reported in CSI part 2. tot of the selected value and the value of {L n} is selected from the sub-table associated with the selected value of L in Table 6 and reported in CSI part 2.

[0772] ● When N TRP = 3 (or N = 3), L is selected from {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12} and reported in CSI part 1, and the value of {L tot} is selected from the sub-table associated with the selected value of L in Table 6 and reported in CSI part 2. tot of the selected value and the value of {L n} is selected from the sub-table associated with the selected value of L in Table 6 and reported in CSI part 2.

[0773] ● When N TRPWhen n1 = 4 (or N = 4), select L from {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16} tot and report it in CSI part 1, and select the {L tot} value from the sub-table associated with the selected value of L in Table 6 n and report it in CSI part 2.

[0774] In one embodiment, the UE evaluates the sub-table associated with {L n} in Table 11 such that L n1 ≥ L n2 when n1 < n2 (in non-increasing order), (in a similar manner as shown in Table 8), and selects an index in the sub-table.

[0775] In one example, the sorting of the TRP can be configured by the NW 130 via, for example, RRC, MAC CE, or DCI.

[0776] In another example / embodiment, in addition to {1, 2, 4}, L n may also allow 0. For example, similar to the structures of Table 7 and Table 9, Table 10 with 0 values replacing the blanks can be used for the examples / embodiments described herein or the examples / embodiments related to Table 10 described herein. Due to space limitations, we omit replacing the blanks in Table 10 with 0 values, but this can be understood as another example / embodiment.

[0777] In one example, each L n is selected from {1, 2, 4} for the selected N TRPs, and Table 12 can be used for the {L n} value (or L tot = ∑ n L n ). In one example, only a subset of the table is used / configured for {L n} reporting. For example, the part of the table where L tot > t cannot be used for {L n} reporting, where t is a threshold that can be fixed (e.g., 18 or 20 or 22 or 24) or configured or reported by the UE 116 (via UE capabilities).

[0778] [Table 12]

[0779]

[0780]

[0781]

[0782]

[0783]

[0784]

[0785]

[0786]

[0787]

[0788]

[0789]

[0790]

[0791]

[0792] In one example, the UE evaluates the sub - table associated with N≤N TRP in Table 12 and selects an index in the sub - table.

[0793] ● For example, when N TRP = 4 is configured by higher - layer signaling, UE 116 evaluates the entire Table 12 and selects / reports an index. In this case, an indicator with bits is needed to indicate the {L n} value.

[0794] ● For example, when N TRP = 3 is configured by higher - layer signaling, UE 116 evaluates the sub - table of Table 12 with indices from 1 to 84 (these indices are associated with N≤N TRP = 3), and selects / reports an index. In this case, an indicator with bits is needed to indicate the {L n} value.

[0795] ● For example, when N TRP = 2 is configured by higher - layer signaling, UE 116 evaluates the sub - table of Table 12 with indices from 1 to 20 (these indices are associated with N≤N TRP = 2), and selects / reports an index. In this case, an indicator with bits is needed to indicate the {L n} value.

[0796] ● For example, when N TRP = 1 is configured by higher - layer signaling, UE 116 evaluates the sub - table of Table 12 with indices from 1 to 3 (these indices are associated with N≤NTRP is associated with = 1, and an index is selected / reported. In this case, an indicator with bits is required to indicate the {L n} value.

[0797] When N < N TRP is selected (by an N TRP bit bitmap), the index of the selected TRP (or CSI-RS resource) can be remapped to 1 to N, which will correspond to the index of the selected {L n}. In one example, from the lowest index to the highest index of the selected TRP, their indices are remapped to 1 to N. For example, when N TRP = 4 and the 4-bit bitmap indicator selected for the TRP is "0101" (assuming the LSB corresponds to TRP 1 and the MSB corresponds to TRP 4), the selected TRPs 1 and 3 are associated with L1 and L2 respectively. In another example, from the highest index to the lowest index of the selected TRP, their indices are remapped to 1 to N. For example, when N TRP = 4 and the 4-bit bitmap indicator selected for the TRP is "0101" (assuming the LSB corresponds to TRP 1 and the MSB corresponds to TRP 4), the selected TRPs 3 and 1 are associated with L1 and L2 respectively.

[0798] In one example, UE 116 should not report any index associated with N' ≠ N, i.e., any index not associated with the number of selected TRPs.

[0799] In one embodiment, the value of L tot is reported in CSI part 1, and the value of {L n} can be reported in CSI part 2 (e.g., by a separate indicator or by a combined indicator).

[0800] In one example:

[0801] ● When N TRP = 2 (or N = 2), L is selected from {1, 2, 3, 4, 5, 6, 7, 8, 10, 12} tot and reported in CSI part 1, and {L tot} is selected from the sub-table associated with the selected value of L in Table 6 n and reported in CSI part 2.

[0802] ● When N TRP = 3 (or N = 3), L is selected from {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18} totand reported in CSI Part 1, and from Table 6 with L tot The selected value is associated with the subtable {L n} value and reported in CSI Part 2.

[0803] When N TRP =4 (or N=4), select L from {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,24} tot and reported in CSI Part 1, and from Table 6 with L tot The selected value is associated with the subtable {L n} value and reported in CSI Part 2.

[0804] In one embodiment, the UE evaluates the table 12 and {L n} associated subtable, so that when n1 <n2时L n1 ≥L n2 (non-increasing order), (in a similar manner as shown in Table 8), and select an index in the subtable.

[0805] In one example, the ordering of TRPs may be configured by NW 130 via, for example, RRC, MAC CE, or DCI.

[0806] In another example / embodiment, in addition to {1,2,4}, L n 0 may also be allowed. For example, similar to the structure of Table 7 and Table 9, Table 12 in which blanks are replaced with 0 values ​​may be used in the examples / embodiments described herein or the examples / embodiments described herein related to Table 12. Due to space limitations, we have omitted replacing blanks with 0 values ​​in Table 12, but this can be understood as another example / embodiment.

[0807] This paper focuses on L n ∈{2,4},L n ∈{2,4,6},L n ∈{1,2,4} and L n The method described for the case of ∈{1,2,4,6} can be extended to the case of any subset of {1,2,3,4,5,6} in the same way. The table provided in the present disclosure may include different parameter names, for example, N may be represented by N TRP Replace and / or L tot Can be L max Replacement. Parameter names can be used interchangeably. Due to space limitations, we have omitted some variations in the present disclosure, but it should be interpreted that these variations are included in the embodiments of the present disclosure.

[0808] In another embodiment, for one or more of the embodiments described herein (e.g., as shown in each table of Embodiment 1), some combinations of relative values of {L n} can be restricted based on one or more aspects (not available for reporting {L n} or L tot ), such as the configuration value of L max , the candidate value restriction for {L n}, the number N of selected TRPs, multiple candidate values of N, and UE capabilities.

[0809] In one embodiment, the UE evaluates a subtable with {L n} values such that L tot ≤L max (where L max is configured by the NW via higher layer (RRC) signaling), and selects an index in the subtable. Therefore, an indicator with a smaller bit size (corresponding to the size of the subtable) is needed to indicate the {L n} value.

[0810] In one example, for the case of selecting L n from {2, 4} (i.e., for the case of Table 6), when L max = 8 and N TRP = 4 are configured, the following subtable has {L n} values such that L tot ≤L max :

[0811] [Table 13]

[0812]

[0813] In this case, UE 116 selects an index from the subtable (as shown in Table 13), and an indicator with bits is needed to indicate the {L n} value.

[0814] Similarly, when N TRP and L max are given (via higher layer signaling), we can use another table (e.g., Table 6, Table 9, Table 11, Table 12) described in one or more of the embodiments described herein to evaluate other cases.

[0815] In one embodiment, the UE evaluates a subtable with {L n} values associated with the value of N, where N is from N TRP in CSI Part 1The number of selected TRPs inferred from the bitmaps, and UE 116 selects an index in the subtable and reports it. Therefore, an indicator with a smaller bit size (corresponding to the size of the subtable) is needed to indicate the {L n} values.

[0816] In one example, for the case where L is selected from {2, 4} n (i.e., for the case of Table 6), when N = 3 is inferred from the N TRP bitmaps in CSI Part 1, the subtable with the {L n} values associated with the value of N = 3 is shown below:

[0817] [Table 14]

[0818]

[0819]

[0820] In this case, UE 116 selects an index from the subtable (as shown in Table 14), and an indicator with bits is needed to indicate the {L n} values.

[0821] Similarly, when N is inferred from the N TRP bitmaps in CSI Part 1, we can use another table (such as Table 6, Table 9, Table 11, Table 12) described in one or more embodiments described herein to evaluate other cases.

[0822] In one embodiment, UE evaluates a subtable with {L n} values associated with multiple values (or candidate values) of N, where the multiple values of N are configured by NW 130 via higher layer signaling (RRC), and UE 116 selects an index in the subtable and reports it. Therefore, an indicator with a smaller bit size (corresponding to the size of the subtable) is needed to indicate the {L n} values.

[0823] In one example, for the case where L is selected from {2, 4} n (i.e., for the case of Table 6), when multiple values of N (e.g., 2 and 3) are configured, the subtable with the {L n} values associated with the values of N = 2 and N = 3 is shown below:

[0824] [Table 15]

[0825]

[0826]

[0827] In this case, UE 116 selects an index from a sub-table (as shown in Table 15), and needs to have bits of an indicator to indicate the {L n} value.

[0828] Similarly, when multiple values (candidate values) of N are configured by NW 130, we can use another table (e.g., Table 6, Table 9, Table 11, Table 12) of one or more embodiments described herein to evaluate other cases.

[0829] In one example, for the case of selecting L from {2, 4} n (i.e., for the case of Table 6), when N = N TRP is configured, evaluate the sub-table with {L TRP} values associated with the value of N = N n and UE 116 selects and reports an index from this sub-table.

[0830] Similarly, when N = N TRP is configured by NW 130, we can use another table (e.g., Table 6, Table 9, Table 11, Table 12) described in one or more embodiments herein to evaluate other cases.

[0831] In one embodiment, when N = N TRP is configured by NW 130 through higher layer signaling, the UE does not report the {L n} value, i.e., there is no report on the {L n} value in both CSI Part 1 and CSI Part 2.

[0832] In one example, for each n = 1, …, N TRP , it can be configured by NW 130 where or a subset of {1, 2, 3, 4, 5, 6}.

[0833] In one embodiment, the UE evaluates the sub-table with {L n} (subset of the entire set ) candidate values associated with the {L n} value, where the candidate values of {L n} are configured by NW 130 through higher layer signaling (RRC), and UE 116 selects an index in the sub-table and reports it. Therefore, an indicator with a smaller bit size (corresponding to the size of the sub-table) is needed to indicate the {L n} value.

[0834] In one embodiment, the UE evaluates a sub-table with {L n} values associated with any combination having the limitations described in one or more embodiments herein, and the UE 116 selects an index in the sub-table and reports it. Therefore, an indicator with a smaller bit size (corresponding to the size of the sub-table) is needed to indicate the {L n} value.

[0835] In one embodiment, the UE reports its capabilities, such as not supporting the L n or L max or L tot value, not supporting the N or N TRP value, supporting the L n or L max or L tot value or supporting the N or N TRP value. In this case, the NW 130 must evaluate the capabilities of the UE 116 and configure the parameters associated with the reported UE capabilities. In addition, the NW 130 expects the UE 116 to report the {L n} value associated with the UE 116 capabilities.

[0836] In one embodiment, the UE may not report the {L n} value (e.g., in the uplink control information (UCI) / CSI part 1).

[0837] In one example, for the case where a combination of a given configuration can be selected, for example, the size of the sub-table of the configuration is equal to 1.

[0838] ● In one example, N TRP = 1 and L max = 2.

[0839] ● In one example, N TRP = N, L max = 2N TRP where for n = 1,…,N TRP the L n = 2.

[0840] ●…

[0841] In one example, when N TRP = 1, the {L n} is not reported.

[0842] In one example, when L n = 2 is the only possible candidate value for each n, the {L n} is not reported.

[0843] In one example, when for the {L n{L is not reported when only one candidate value is possible (e.g., by configuration) n For example, codebook subset restriction or other higher layer (RRC) signaling may be used for this configuration.

[0844] In another embodiment, regarding the SD basis vector selection for (Rel-18) type II codebook refinement for CJT mTRP, {L n ,n=1,...,N TRP Each of the NW 130 is configured by high-level (RRC) signaling, where N TRP is the number of TRPs configured by NW 130.

[0845] In one example, L n ∈{2,4,6}. In one example, L n ∈{1,2,4,6}. In one example, L n ∈{1,2,3,4,5,6}. In one example, L n ∈{1,2,3,4}. In one example, L n ∈{1,2,3}. In one example, L n ∈{1,2,4}. In one example, Select L n ,in is a subset of {1,2,3,4,5,6}.

[0846] In another embodiment, regarding the SD basis vector selection for (Rel-18) Type II codebook refinement for CJT mTRP, L max The value of ) and / or {L n ,n=1,...,N TRP The (relative) value of} is configured by NW 130 through high-level (RRC) signaling, where N TRP is the number of TRPs (CSI-RS resources) configured by NW 130. n ,n=1,...,N TRP The relative value of} can be signaled by using a joint indicator or multiple separate indicators.

[0847] In one embodiment, regarding the SD basis vector selection for (Rel-18) type II codebook refinement for CJT-mTRP, {L n ,n=1,...,N TRP} value N L A set of ≥1 combinations may be configured by NW 130 via high-level (RRC) signaling, where N TRPis the number of TRPs (CSI-RS resources) configured by NW 130. {L n , n = 1, ..., N TRP} values of N L combinations can be signaled by using a combined indicator or multiple individual indicators. In one example, N L = 1. In another example, N L > 1.

[0848] In one example, L n ∈ {2, 4, 6}. In one example, L n ∈ {1, 2, 4, 6}. In one example, L n ∈ {1, 2, 3, 4, 5, 6}. In one example, L n ∈ {1, 2, 3, 4}. In one example, L n ∈ {1, 2, 3}. In one example, L n ∈ {1, 2, 4}. In one example, L can be selected from where n is a subset of {1, 2, 3, 4, 5, 6}.

[0849] In one example, {L n} values can be configured based on at least one table (or any table that can be constructed (i.e., sub-table, entire table)) described in this disclosure (particularly in one or more embodiments described herein).

[0850] In one example, N L can be explicitly configured by high-layer (RRC) signaling with individual parameters. The possible values of N L are a set of , i.e., select a value from . Another N T represents the total number of tables including combinations of values of {L n , n = 1, ..., N TRP}. In one example, a parameter of bit size can be configured to indicate N n , n = 1, ..., N TRP combinations of values of {L L . In one example, the table can be any table (entire table or sub-table) described in this disclosure (particularly in one or more embodiments described herein), or any table that can be constructed as described in this disclosure. In one example, the table can be any table (entire table or sub-table (or any table that can be constructed as described in this disclosure), where N is replaced by N TRP. In one example, when N is replaced with N in the table TRP , the UE applies L to the CSI-RS resource (or TRP index) n (n = 1, …, N TRP ). For example, when reporting the N n -bit bitmap for TRP selection, the UE116 only uses the L TRP values of the n values corresponding to the selected TRPs indicated in the bitmap. n

[0851] In one example, N is implicitly determined or configured by higher layer RRC signaling L .

[0852] ● In one example, an N T -bit bitmap is used to indicate the N n combinations of the values of {L TRP , n = 1, ..., N L}, and N T can be inferred from the configured N L -bit bitmap.

[0853] ● (a) In one example, the N n combinations of the values of {L tot} are determined according to the configured {L n} values and their associated L TRP values. For example, one combination of the values of {L L} is configured, and the other combinations of the values of {L n , n = 1, ..., N TRP} associated with the same L tot as the configured combination are determined as the N n - 1 combinations of the values of {L TRP , n = 1, ..., N n , n = 1, ..., N TRP}. L

[0854] ● (b) The N tot combinations whose L max (or L n ) values are less than (or equal to) the L tot (L max ) value associated with the configured {L L} value can be determined.

[0855] ● In one example, {L TRP} (or N) and L tot (or L max ) are determined according to the configured N n , n = 1, ..., NTRP N combinations of values of L For example, in one of the tables described in this disclosure, determining the N TRP (or N) and L tot (or L max ) corresponding to the {L n , n = 1, ..., N TRP} value combinations.

[0856] In one example, when N L > 1, the UE reports an indicator with a bit size to indicate a selected combination of the {L n , n = 1, ..., N TRP} values in CSI part 1.

[0857] In one example, when N L = 1, the UE follows the configured {L n} values and thus does not report.

[0858] In one example, the N n combinations of {L L} are subject to the capabilities of UE 116 regarding L tot or L max .

[0859] When N = N TRP is configured, (a) can be applied. When N = N TRP is not configured (i.e., N <= N TRP ), (b) can be applied.

[0860] When N = N TRP is configured, an example in this document can be applied. When N = N TRP is not configured (i.e., N <= N TRP ), another example in this document can be applied.

[0861] In another embodiment, any combination of one or more embodiments described herein can be configured by NW 130 through high-layer (RRC) signaling. In one example, any combination or one or more embodiments described herein can be configured by NW 130 through high-layer RRC signaling.

[0862] In one embodiment, one or more embodiments described herein can be configured by NW 130 through high-layer (RRC) signaling.

[0863] In one embodiment, one or more embodiments described herein are only applicable when N = N TRPIt can only be used when, while one or more embodiments described herein can also be used in other cases.

[0864] In one embodiment, one or more embodiments described herein are only used when configuring N = N TRP It can only be used when, while one or more embodiments described herein can also be used in other cases.

[0865] In another embodiment, regarding the SD basis vector selection for the (Rel-18) type II codebook refinement (refinement based on the Rel-17 port selection codebook) for CJT mTRP, one or more embodiments described herein are also used for the refinement based on the Rel-17 port selection codebook. For example, L n 、L tot 、L max can be replaced by α n 、α tot 、α max , where (or ) and (or ).

[0866] In another embodiment, regarding the SD basis vector selection for the (Rel-18) type II codebook refinement (refinement based on the Rel-17 port selection codebook) for CJT mTRP, α tot is configured by the NW 130 through high-layer (RRC) signaling, and the values of {α n , n = 1,..., N TRP} are reported by the UE 116, where N TRP is the number of TRPs (CSI-RS resources) configured by the NW 130. The relative values of {α n , n = 1,..., N TRP} can be selected from a table (or by using a combined indicator) and reported in CSI part 1.

[0867] When configuring N TRP , N (≤ N TRP ) can be selected from N TRP and reported in CSI part 1. For the selected N TRPs, the associated α n values are selected and indicated by an indicator. This indicator is included in CSI part 1 or CSI part 2.

[0868] In one embodiment, the table of {L n} (which can be one of the possible tables described in this disclosure) does not include the following combinations {L n}(4, 4, 2) and its permutations (e.g., (4, 2, 4), (2, 4, 4)) (for N TRP = 3) and {L n}(4, 4, 4, 2) and its permutations (e.g., (4, 2, 4, 4), (4, 4, 2, 4), (2, 4, 4, 4)) (for N TRP = 4) for at least one of them.

[0869] [Table 16]

[0870]

[0871] In one example, the maximum number of combinations supported by the table for {L n} is at most Q, e.g., Q = 34 or Q = 16 or Q = 120, and at least U (1 ≤ U ≤ 13) of the combinations in {E1 - E6, E9 - E11, and E15 - E18} in Table 16, one of {E1 - E6, E9 - E11, and E15 - E18}, or each of the combinations in {E1 - E6, E9 - E11, and E15 - E18} is included in the at most Q combinations. In one example, each of the combinations in {E1 - E6, E9 - E11, and E15 - E18} in Table 16 is included in (i.e., U = 13) the at most Q combinations.

[0872] Note that in Table 16, there are rows with one {Ln} combination and its permutations. In one example, for such rows, one combination (in the permutation) can be written as shown in Table 16. In another example, each permutation can be written in another row. In another example, each permutation can be written in one row. In one example, for only some of the rows with one {Ln} combination and its permutations (e.g., E5 and E10), each permutation can be written in another row.

[0873] In another example, a subset (some) of the permutations can be written in one row. In another example, for each combination in a subset (some) of the permutations, it can be written in another row of the table.

[0874] In one example, in addition to the U combinations, at least one of the remaining (22 - 13) combinations (i.e., E7, E8, E12 - E14, E19 - E22) in Table 16 is included in the at most Q combinations.

[0875] ● In one example, one of the remaining {L n} combinations (i.e., E7, E8, E12 - E14, E19 - E22) in Table 16 is included in the at most Q combinations. (Examples are omitted.) ​

[0876] ● In one example, two of the remaining {L n} combinations in Table 16 (i.e., E7, E8, E12 - E14, E19 - E22) are included in at most Q combinations. (Examples are omitted.)

[0877] ● In one example, three of the remaining {L n} combinations in Table 16 (i.e., E7, E8, E12 - E14, E19 - E22) are included in at most Q combinations. (Examples are omitted.)

[0878] ● In one example, four of the remaining {L n} combinations in Table 16 (i.e., E7, E8, E12 - E14, E19 - E22) are included in at most Q combinations. (Examples are omitted.)

[0879] ● In one example, five of the remaining {L n} combinations in Table 16 (i.e., E7, E8, E12 - E14, E19 - E22) are included in at most Q combinations. (Examples are omitted.)

[0880] ● In one example, six of the remaining {L n} combinations in Table 16 (i.e., E7, E8, E12 - E14, E19 - E22) are included in at most Q combinations. (Examples are omitted.)

[0881] ● In one example, seven of the remaining {L n} combinations in Table 16 (i.e., E7, E8, E12 - E14, E19 - E22) are included in at most Q combinations. (Examples are omitted.)

[0882] ● In one example, eight of the remaining {L n} combinations in Table 16 (i.e., E7, E8, E12 - E14, E19 - E22) are included in at most Q combinations. (Examples are omitted.)

[0883] ● In one example, each of the remaining {L n} combinations in Table 16 (i.e., E7, E8, E12 - E14, E19 - E22) is included in at most Q combinations.

[0884] In one example, in addition to the U combinations, at least one of the remaining (22 - 13) combinations (i.e., E7, E8, E12 - E14, E19 - E22) in Table 16 is included in the at - most Q combinations.

[0885] ● In one example, associated with N TRP = 2, each of the {L n} combinations (i.e., E7 and E8) is included in the at - most Q combinations.

[0886] ● In one example, associated with N TRP = 2, 3, each of the {L n} combinations (i.e., E7 and E8, E12 - E14) is included in the at - most Q combinations.

[0887] ● In one example, associated with N TRP = 2, 3, 4, each of the {L n} combinations (i.e., E7 and E8, E12 - E14, E19 - E22) is included in the at - most Q combinations.

[0888] ● In one example, associated with N TRP = 2, one of the {L n} combinations (i.e., E7 and E8) is included in the at - most Q combinations.

[0889] ● In one example, associated with N TRP = 3, one of the {L n} combinations (i.e., E12 - E14) is included in the at - most Q combinations.

[0890] ● In one example, associated with N TRP = 4, one of the {L n} combinations (i.e., E19 - E22) is included in the at - most Q combinations.

[0891] ● In one example, associated with N TRP = 2, two of the {L n} combinations (i.e., E7 and E8) are included in the at - most Q combinations.

[0892] ● In one example, associated with N TRP = 3, two of the {L n} combinations (i.e., E12 - E14) are included in the at - most Q combinations.

[0893] ● In one example, associated with N TRP = 4, two of the {L nTwo combinations in the {E19 - E22} combination (i.e., E19 - E22) are included in at most Q combinations.

[0894] ● In one example, any combination of the examples in this document can be used as an example. For example, one or more examples described in this document, namely one of E7 and E8, one of E12 - E14, and one of E10 - E22, are included in at most Q combinations.

[0895] In one example, the table of {L n} includes at least one of the {L n} combinations of {E1 - E6, E9 - E11, and E15 - E18}. For example, the table of {L n} including {E1 - E6, E9 - E11, and E15 - E18} can be written as follows:

[0896] [Table 17]

[0897]

[0898] ● Ex1) Includes permutations of some {Ln} combinations, namely {2, 4} and {2, 2, 4}.

[0899] [Table 18]

[0900]

[0901]

[0902] ● Ex2) Includes permutations of some {Ln} combinations, namely {2, 4} and {2, 2, 4}.

[0903] [Table 19]

[0904]

[0905] ● Ex3) Includes permutations of some {Ln} combinations, namely {2, 4} and {2, 2, 4}.

[0906] In one example, the table of {L n} includes 0 in the blank spaces. For example, in the tables of Ex1) and Ex2) in this document, the blanks are filled with 0.

[0907] In another example, the order of the {L n} combinations can be different from one or more examples described in this document. For example, from top to bottom, the {L n} combinations can be written in the order of N TRP = 4 to N TRP = 1. For example, the tables in this document are in the order of N TRP = 1 to N from top to bottom.TRP in the order of = 4

[0908] In one example, α n is selected from among for the selected N TRPs, and Table 20 can be used for the {α n} values.

[0909] [Table 20]

[0910]

[0911]

[0912]

[0913]

[0914]

[0915] When N < N TRP is selected (by the N TRP bit bitmap), the indices of the selected TRPs (or CSI-RS resources) can be remapped to 1 to N, which will correspond to the indices of the selected {α n}. In one example, from the lowest index to the highest index of the selected TRPs, their indices are remapped to 1 to N. For example, when N TRP = 4 and the 4-bit bitmap indicator selected for the TRPs is "0101" (assuming the LSB corresponds to TRP 1... the MSB corresponds to TRP 4), the selected TRPs 1 and 3 are associated with α1 and α2, respectively. In another example, from the highest index to the lowest index of the selected TRPs, their indices are remapped to 1 to N. For example, when N TRP = 4 and the 4-bit bitmap indicator selected for the TRPs is "0101" (assuming the LSB corresponds to TRP 1... the MSB corresponds to TRP 4), the selected TRPs 3 and 1 are associated with α1 and α2, respectively.

[0916] In one example, UE 116 should not report any indices associated with N' ≠ N, any indices not associated with the number of selected TRPs.

[0917] In another embodiment, regarding the SD basis vector selection for the (Rel-18) type II codebook refinement for CJT mTRPs (refinement based on the Rel-17 port selection codebook), the N n , n = 1,..., N TRP of {α LA set of ≥ 1 combined values can be configured by NW130 via higher layer (RRC) signaling, where N TRP is the number of TRPs (CSI-RS resources) configured by NW 130. {α n ,n = 1,…,N TRP} values of N L combinations can be signaled by using a combined indicator or multiple individual indicators, where where In one example, N L = 1. In another example, N L > 1.

[0918] In one example, {α n} values can be configured based on at least one table described in this disclosure (or any table that can be constructed (i.e., sub-table, entire table)).

[0919] In one example, N L can be explicitly configured via higher layer (RRC) signaling with individual parameters. The possible values of N L are a set of . Let N T represent the total number of tables including combinations of values of {α n ,n = 1,...,N TRP}. In one example, a parameter of bit size can be configured to indicate N n combinations of values of {L TRP ,n = 1,...,N L}. In one example, the table can be any table described in this disclosure (entire table or sub-table), or any table that can be constructed as described in this disclosure. In one example, the table can be any table described in this disclosure (entire table or sub-table (or any table that can be constructed as described in this disclosure), where N is replaced with N TRP . In one example, when N is replaced with N TRP in the table, the UE applies α TRP for CSI-RS resource (or TRP index) n (n = 1,…,N n ). For example, when reporting an N TRP bit bitmap for TRP selection, UE 116 only uses the α n values of the n values corresponding to the selected TRPs indicated in the bitmap.

[0920] In one example, N n combinations of values of {α T} can be configured by using Table 20 or a sub-table including at least one row of Table 21.

[0921] [Table 21]

[0922]

[0923]

[0924]

[0925]

[0926]

[0927] Although in the table for {α n}、α tot We have used decimal notation, but it can also be expressed as a fraction, for example, 1 instead of 0.50, 0.75, 1.

[0928] In one example, N is implicitly determined or configured via high-level RRC signaling. L .

[0929] ● In one example, using N T The bitmap indicates {α n ,n=1,...,N TRP} value N L combinations, and can be configured from N T Infer N from the bitmap L .

[0930] ● In one example, according to the configuration {α n} value and its associated α tot Value to determine {α n ,n=1,...,N TRP} value N L For example, if {α n ,n=1,...,N TRP} and will be the same as the configured combination of α tot The associated {α n ,n=1,...,N TRP Other combinations of values ​​of} are determined as {α n ,n=1,...,N TRP} value N L -1 combination.

[0931] In one example, when N L >1, UE reports The bit size indicator is used to indicate {α n, n = 1, ..., N TRP} a selected combination of values.

[0932] In one example, when N L = 1, the UE follows the configured {α n} values, so there is no need to report the {α n} values.

[0933] In one example, the N n combinations of {α L} are subject to the UE 116's capabilities regarding α tot or α max .

[0934] The tables provided in this disclosure may include different parameter names. For example, N may be replaced by N TRP and / or α tot may be replaced by α max . The parameter names may be used interchangeably.

[0935] In one embodiment, regarding the SD basis vector selection for the (Rel-18) type II codebook refinement of CJT mTRP, each of {L n , n = 1, ..., N TRP} is configured by the NW 130 via higher layer (RRC) signaling, where N TRP is the number of TRPs configured by the NW 130.

[0936] In one example, L n ∈ {2, 4, 6}. In one example, L n ∈ {1, 2, 4, 6}. In one example, L n ∈ {1, 2, 3, 4, 5, 6}. In one example, L n ∈ {1, 2, 3, 4}. In one example, L n ∈ {1, 2, 3}. In one example, L n ∈ {1, 2, 4}. In one example, L can be selected from n , where is a subset of {1, 2, 3, 4, 5, 6}. In one example, L n ∈ {2, 4}.

[0937] In another embodiment, regarding the SD basis vector selection for the (Rel-18) type II codebook refinement of CJT mTRP, each of {L n , n = 1, ..., N TRP} is configured by the NW 130 via higher layer (RRC) signaling, where NTRP is the number of TRPs configured by NW 130.

[0938] In one example, L n ∈ {2, 4, 6}. In one example, L n ∈ {1, 2, 4, 6}. In one example, L n ∈ {1, 2, 3, 4, 5, 6}. In one example, L n ∈ {1, 2, 3, 4}. In one example, L n ∈ {1, 2, 3}. In one example, L n ∈ {1, 2, 4}. In one example, L can be selected from where n is a subset of {1, 2, 3, 4, 5, 6}.

[0939] In one embodiment, for the selection of the SD basis vectors for the (Rel-18) type II codebook refinement for CJT-mTRP, a set of N n , n = 1, ..., N TRP} values, where N L ≥ 1, can be configured by NW 130 via higher layer (RRC) signaling, where N TRP is the number of TRPs (CSI-RS resources) configured by NW 130. The N n , n = 1, ..., N TRP} values can be signaled by using a joint indicator or multiple individual indicators. In one example, N L = 1. In another example, N L > 1. L

[0940] In one example, {L n} values can be configured based on at least one table described in this disclosure (or any table that can be constructed, i.e., sub-table or entire table).

[0941] In one example, N L can be explicitly configured by higher layer (RRC) signaling with individual parameters. The possible values of N L are a set of . Let N T represent the total number of tables of combinations including the values of {L n , n = 1, ..., N TRP}. In one example, a parameter of bit size can be used to indicate {L n , n = 1, ..., N TRPN combinations of values of L In one example, the table can be any table (the entire table or a sub - table) described in this disclosure, or can be any table that can be constructed as described in this disclosure.

[0942] In one example, N is implicitly determined or configured by higher - layer RRC signaling L .

[0943] ● In one example, an N - bit bitmap is used to indicate N combinations of values of {L T , n = 1,..., N n}, and N can be inferred from the configured N - bit bitmap TRP N combinations of values of L and N T can be inferred from the configured N - bit bitmap L .

[0944] ● In one example, N combinations of values of {L n} are determined according to the configured {L tot} values and their associated L n values, n = 1,..., N TRP For example, one combination of values of {L L , n = 1,..., N n} is configured, and the other combinations of values of {L TRP , n = 1,..., N tot} associated with the same L n as the configured combination are determined as N - 1 combinations of values of {L TRP , n = 1,..., N n}, where TRP N combinations of values of L -1, where

[0945] In one example, when N L > 1, the UE reports an indicator with a bit size to indicate a selected combination of values of {L n , n = 1,..., N TRP} in CSI part 1.

[0946] In one example, when N L = 1, the UE follows the configured {L n} value, so there is no need to report the {L n} value.

[0947] In one example, the N n combinations of {L L} are subject to UE 116 regarding or Capability.

[0948] In one embodiment, the UE is configured with a codebook-based CSI report (e.g., via higher layer CSI-ReportConfig) for C-JT transmission from multiple TRPs, as described in this disclosure, where the codebook parameters (such as α or L, β, p v or M v ) are configured via the higher layer parameters "paramCombination-r18" or "paramCombinationCJT-r18".

[0949] ● In one example, the Rel.16 parameter combination table of "paraCombination-r16" is reused for "paramCombination-r18" (refer to Table 1).

[0950] ● In one example, the Rel.17 parameter combination table of "paraCombination-r17" is reused for "paramCombination-r18" (refer to Table 2).

[0951] ● In one example, a new parameter combination table is used for "paramCombination-r18".

[0952] ● In one example, a table containing existing Rel.16 or Rel.17 parameter combinations and one or more new parameter combinations is used for "paramCombination-r18".

[0953] In another embodiment, the table for "paramCombination-r18" is designed based on the following parameter candidates:

[0954] ● L n Candidate values for:

[0955] ○ Where L n is the L for CSI-RS resource n (TRPn); and

[0956] ○ N TRP ∈{1,2,3,4} is the number of CSI-RS resources (or TRPs), and is configured by NW 130 via higher layer signaling.

[0957] ● For v = 1, 2, p v Candidate values for:

[0958] ● For v = 3, 4, p v Candidate values for:

[0959] ● Candidate values of β:

[0960] In one example, any table including at least one combination provided in the tables of the present disclosure can be used as an example of the "paraCombination-r18" table.

[0961] In one example, when N TRP = 1, any table including at least one parameter combination in the sub-tables of Table 3 can be used for the "paramCombination-r18" table.

[0962] The table index numbers (from 1 to 100) in Table 22 should be interpreted only as indices corresponding to the parameter combinations. That is, the table index numbers can be any values based on the order of the parameter combinations and the number of parameter combinations in the table.

[0963] In one example, any sub-table of Table 22 can be used as an example of the "paraCombination-r18" table.

[0964] [Table 22]

[0965]

[0966]

[0967]

[0968]

[0969] In one example, when N TRP = 2, any table including at least one parameter combination in the sub-tables of Table 23 can be used for the "paramCombination-r18" table.

[0970] In Table 23, due to space limitations, we omit the rows that can be clearly calculated (based on the previous rows). In addition, the table index numbers (from 1 to 200) in Table 23 should be interpreted only as indices corresponding to the parameter combinations. That is, the table index numbers can be any values based on the order of the parameter combinations and the number of parameter combinations in the table.

[0971] In one example, any sub-table of Table 23 can be used as an example of the "paraCombination-r18" table.

[0972] [Table 23]

[0973]

[0974]

[0975]

[0976]

[0977]

[0978] In one example, when N TRP = 3, any table including at least one parameter combination in the sub-tables of the table can be used for the "paramCombination-r18" table.

[0979] In Table 24, due to space limitations, we have omitted the rows that can be clearly calculated (based on the previous rows). In addition, the table index numbers in Table 24 (from 1 to 400) should be interpreted only as the indices of the corresponding parameter combinations. That is, the table index number can be any value based on the order of the parameter combinations and the number of parameter combinations in the table.

[0980] In one example, any sub-table of Table 24 can be used as an example of the "paraCombination-r18" table.

[0981] [Table 24]

[0982]

[0983]

[0984]

[0985]

[0986]

[0987]

[0988] In one example, when N TRP = 4, any table including at least one parameter combination in the sub-tables of Table 25 can be used for the "paramCombination-r18" table.

[0989] In Table 25, due to space limitations, we have omitted the rows that can be clearly calculated (based on the previous rows). In addition, the table index numbers in Table 25 (from 1 to 800) should be interpreted only as the indices of the corresponding parameter combinations. That is, the table index number can be any value based on the order of the parameter combinations and the number of parameter combinations in the table.

[0990] In one example, any sub-table of Table 25 can be used as an example of the "paraCombination-r18" table.

[0991] [Table 25]

[0992]

[0993]

[0994]

[0995]

[0996]

[0997]

[0998] In one embodiment, any table including at least one parameter combination in the sub-tables of Table 22 / Table 23 / Table 24 / Table 25 associated with {L n}(such that when n1 < n2, L n1 ≥ L n2 (in non-increasing order)) can be used for the "paramCombination-r18" table.

[0999] In one example, the sorting of TRP can be configured by NW 130 through, for example, RRC, MAC CE, or DCI.

[1000] In one embodiment, any table including at least one parameter combination in the sub-tables of Table 22 / Table 23 / Table 24 / Table 25 associated with {L n}(such that when n1 > n2, L n1 ≥ L n2 (in non-increasing order)) can be used for the "paramCombination-r18" table.

[1001] In one example, the sorting of TRP can be configured by NW 130 through, for example, RRC, MAC CE, or DCI.

[1002] In another embodiment, any table including at least one parameter combination in the sub-tables of Table 22 / Table 23 / Table 24 / Table 25 can be used for the "paramCombination-r18" table, where the sub-table includes a parameter combination associated with where is a subset of For example, if The sub - table includes parameter combinations associated with those in Table 22 / Table 23 / Table 24 / Table 25 ● In one example,

[1003] and the sub - table includes parameter combinations associated with whether or not in Table 22 / Table 23 / Table 24 / Table 25 ● In one example,

[1004] and the sub - table includes parameter combinations associated with whether or not in Table 22 / Table 23 / Table 24 / Table 25 ● In one example,

[1005] and the sub - table includes parameter combinations associated with whether or not in Table 22 / Table 23 / Table 24 / Table 25 ● In one example,

[1006] and the sub - table includes parameter combinations associated with whether or not in Table 22 / Table 23 / Table 24 / Table 25 ● In another embodiment, any table including at least one parameter combination in the sub - table of Table 22 / Table 23 / Table 24 / Table 25 can be used for the "paramCombination - r18" table, where the sub - table includes parameter combinations associated with

[1007] where is a subset of. For example, if then the sub - table includes parameter combinations associated with those in Table 22 / Table 23 / Table 24 / Table 25 ● In one example,

[1008] and the sub - table includes parameter combinations associated with those in Table 22 / Table 23 / Table 24 / Table 25 ● In one example,

[1009] and the sub - table includes parameter combinations associated with those in Table 22 / Table 23 / Table 24 / Table 25 ● In one example,

[1010] and the sub - table includes parameter combinations associated with 1 in Table 22 / Table 23 / Table 24 / Table 25 ● In one example,

[1011] ​​​​​​​​● In one example, and the sub - table includes parameter combinations associated with those in Table 22 / Table 23 / Table 24 / Table 25 for 1.

[1012] ● In one example, and the sub - table includes parameter combinations associated with those in Table 22 / Table 23 / Table 24 / Table 25 for.

[1013] In another embodiment, any table including at least one parameter combination in the sub - table of Table 22 / Table 23 / Table 24 / Table 25 can be used for the "paramCombination - r18" table, where the sub - table includes parameter combinations associated with and where is defined in one or more of the embodiments described herein, and is defined in one or more of the embodiments described herein.

[1014] In one example, the sub - table includes parameter combinations associated with the following:

[1015] ● and

[1016] In another embodiment, the table for "paramCombination - r18" is designed based on the following parameter candidates:

[1017] ● L n candidate values for:

[1018] ○ where L n is the L for the CSI - RS resource n (TRPn); and

[1019] ○ N TRP ∈ {1, 2, 3, 4} is the number of CSI - RS resources (or TRPs), and is configured by NW 130 via higher - layer signaling.

[1020] ● For v = 1, 2, p v candidate values for:

[1021] ● For v = 3, 4, p v candidate values for:

[1022] ● Candidate values for β:

[1023] In one example, similar to one or more embodiments described herein, a table of each value of N can be constructed using candidate values (such as Table 22 / Table 23 / Table 24 / Table 25) (we omit it due to space limitations). TRP

[1024] ● In one example, any table including at least one parameter combination in a sub - table of a table can be used for the "paramCombination - r18" table.

[1025] ● In one example, any sub - table of the table can be used as an example of the "paraCombination - r18" table.

[1026] In another embodiment, any table including at least one parameter combination in a sub - table of any table constructed in one or more embodiments described herein can be used for the "paramCombination - r18" table, where the sub - table includes a parameter combination associated with where is a subset of and the rest can be the same as the rest of one or more embodiments described herein.

[1027] In another embodiment, any table including at least one parameter combination in a sub - table of any table constructed in one or more embodiments described herein can be used for the "paramCombination - r18" table, where the sub - table includes a parameter combination associated with where is a subset of. The rest can be the same as the rest of one or more embodiments described herein.

[1028] In another embodiment, any table including at least one parameter combination in a sub - table of any table constructed in one or more embodiments described herein can be used for the "paramCombination - r18" table, where the sub - table includes a parameter combination associated with and where is defined in one or more embodiments described herein, and is defined in one or more embodiments described herein. The rest can be the same as the rest of one or more embodiments described herein.

[1029] In another embodiment, the table for "paramCombination - r18" is designed based on the following parameter candidates:

[1030] ​● L n Candidate values for:

[1031] ○ Where L n is the L for CSI-RS resource n (TRPn); and

[1032] ○ N TRP ∈ {1, 2, 3, 4} is the number of CSI-RS resources (or TRPs), and is configured by NW 130 via higher layer signaling.

[1033] ● For v = 1, 2, p v Candidate values for:

[1034] ● For v = 3, 4, p v Candidate values for:

[1035] ● Candidate values for β:

[1036] In one example, similar to one or more embodiments described herein, a table for each value of N can be constructed using candidate values (such as Table 22 / Table 23 / Table 24 / Table 25) (we omit it due to space limitations). TRP

[1037] ● In one example, any table including at least one parameter combination in a sub-table of a table can be used for the "paramCombination-r18" table.

[1038] ● In one example, any sub-table of the table can be used as an example of the "paraCombination-r18" table.

[1039] In another embodiment, any table including at least one parameter combination in a sub-table of any table constructed in one or more embodiments described herein can be used for the "paramCombination-r18" table, where the sub-table includes parameter combinations associated with where is a subset of and the remainder can be the same as the remainder of one or more embodiments described herein.

[1040] In another embodiment, any table including at least one parameter combination in a sub-table of any table constructed in one or more embodiments described herein can be used for the "paramCombination-r18" table, where the sub-table includes parameter combinations associated with where is​ a subset. The remaining part may be the same as the remaining part of one or more embodiments described herein.

[1041] In another embodiment, any table including at least one parameter combination in a sub-table of any table constructed in one or more embodiments described herein may be used for the "paramCombination-r18" table, where the sub-table includes parameter combinations associated with and where is defined in one or more embodiments described herein, and is defined in one or more embodiments described herein. The remaining part may be the same as the remaining part of one or more embodiments described herein.

[1042] In another embodiment, for any table described in one or more embodiments described herein, or any table (the whole table or a sub-table) that can be constructed by one or more embodiments described herein, except for L n , p v and β, the table may further include L tot , and it can be used for the "paramCombination-r18" table.

[1043] In one example, Table 26 may be an example of a table that describes including L n , p v and β in addition to L tot , and this table is based on Table 26.

[1044] [Table 26]

[1045]

[1046] In another embodiment, for any table described in one or more embodiments described herein, or any table (the whole table or a sub-table) that can be constructed by one or more embodiments described herein, except for L n , p v and β, the table may further include L tot and N (or N TRP ), and it can be used for the "paramCombination-r18" table.

[1047] In one example, Table 27 may be an example of a table that describes including L n , p v and β in addition to L tot and N (or N TRP ), and this table is based on Table 25.

[1048] [Table 27]

[1049]

[1050]

[1051] In one example, Table 28 can be a table that describes, in addition to L n , p v and β, also includes L tot and N (or N TRP ), and this table is based on the combination of Table 22 / Table 23 / Table 24 / Table 25.

[1052] [Table 28]

[1053]

[1054]

[1055] In another example, the blanks in the table can be replaced with 0 values, for example as follows:

[1056] [Table 29]

[1057]

[1058]

[1059] In another embodiment, for any table described herein or any table (whole table or sub - table) that can be constructed by one or more embodiments described herein, in addition to L n , p v and β, the table can also include N (or N TRP ), and it can be used for the "paramCombination - r18" table.

[1060] In one example, Table 30 can be a table that describes, in addition to L n , p v and β, also includes N and (or N TRP ), and this table is based on Table 25.

[1061] [Table 30]

[1062]

[1063] In one example, Table 31 can be a table that describes, in addition to L n , p v and β, also includes L tot and N (or N TRP ), and this table is based on the combination of Table 22 / Table 23 / Table 24 / Table 25.

[1064] [Table 31]

[1065]

[1066]

[1067] In another example, the blanks in the table can be replaced with 0 values, for example as shown below:

[1068] [Table 32]

[1069]

[1070]

[1071] In another embodiment, a subset of parameter combinations in a table designed for the "paramCombination-r18" table based on one or more of the embodiments described herein can be restricted to not be configured based on one or more aspects, such as the number of TRPs (N TRP )), the number of SBs K (numberOfPMI-SubbandsPerCQI-Subband), and the number of CSI-RS ports (2N1N2 or P CSI-RS ).

[1072] In one example, under certain conditions, a parameter combination in which L n = 4 and / or 6 for any n can be used / reported (by UE 116) or configured (by NW 130).

[1073] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[1074] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1075] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1076] ● In one example (C4), the condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[1077] ● In one example (C5), the condition corresponds to N TRP<The case of s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1078] ● In one example (C6), the condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1079] ● In one example (C7), the condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1080] ● In one example (C8), the condition corresponds to N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1081] ● In one example (C9), the condition corresponds to K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1082] ● In one example (C10), the condition corresponds to K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1083] ● In one example (C11), the condition corresponds to K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1084] ● In one example (C12), the condition corresponds to K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1085] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[1086] ● In one example (C10), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1087] ● In one example (C11), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the R value is 1 (e.g., via higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1088] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) such that for any n the parameter combination.

[1089] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[1090] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1091] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1092] ● In one example (C4), the condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[1093] ● In one example (C5), the condition corresponds to N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1094] ● In one example (C6), the condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1095] ● In one example (C7), the condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1096] ● In one example (C8), the condition corresponds to N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1097] ● In one example (C9), the condition corresponds to the case where K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1098] ● In one example (C10), the condition corresponds to the case where K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1099] ● In one example (C11), the condition corresponds to the case where K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1100] ● In one example (C12), the condition corresponds to the case where K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1101] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[1102] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1103] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1104] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) where for any n and / or parameter combinations.

[1105] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[1106] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1107] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1108] ● In one example (C4), the condition corresponds to N TRP <3 (i.e., N TRP = 1, 2).

[1109] ● In one example (C5), the condition corresponds to the case where N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1110] ● In one example (C6), the condition corresponds to the case where N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1111] ● In one example (C7), the condition corresponds to the case where N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1112] ● In one example (C8), the condition corresponds to the case where N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1113] ● In one example (C9), the condition corresponds to the case where K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1114] ● In one example (C10), the condition corresponds to the case where K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1115] ● In one example (C11), the condition corresponds to the case where K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1116] ● In one example (C12), the condition corresponds to the case where K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1117] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[1118] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1119] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1120] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) such that for any n and / or and / or a parameter combination of 1.

[1121] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[1122] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1123] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1124] ● In one example (C4), the condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[1125] ● In one example (C5), the condition corresponds to N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1126] ● In one example (C6), the condition corresponds to the case where N TRP ≤ s, where s is a threshold value that can be fixed, configured, or subject to UE capabilities.

[1127] ● In one example (C7), the condition corresponds to the case where N TRP > s, where s is a threshold value that can be fixed, configured, or subject to UE capabilities.

[1128] ● In one example (C8), the condition corresponds to the case where N TRP ≥ s, where s is a threshold value that can be fixed, configured, or subject to UE capabilities.

[1129] ● In one example (C9), the condition corresponds to the case where K < k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[1130] ● In one example (C10), the condition corresponds to the case where K ≤ k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[1131] ● In one example (C11), the condition corresponds to the case where K > k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[1132] ● In one example (C12), the condition corresponds to the case where K ≥ k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[1133] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[1134] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1135] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the R value is 1 (e.g., via higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1136] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) where for any n, L n = 4 and / or 6 and / or and / or and / or parameter combinations.

[1137] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[1138] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1139] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1140] ● In one example (C4), the condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[1141] ● In one example (C5), the condition corresponds to N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1142] ● In one example (C6), the condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1143] ● In one example (C7), the condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1144] ● In one example (C8), the condition corresponds to N TRPFor the case of ≥s, where s is a threshold value that can be fixed, configured, or subject to UE capabilities.

[1145] ● In one example (C9), the condition corresponds to the case of K < k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[1146] ● In one example (C10), the condition corresponds to the case of K ≤ k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[1147] ● In one example (C11), the condition corresponds to the case of K > k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[1148] ● In one example (C12), the condition corresponds to the case of K ≥ k, where k is a threshold value that can be fixed, configured, or subject to UE capabilities.

[1149] ● In one example (C13), the condition corresponds to (C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12), and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[1150] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1151] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1152] In one example, under certain conditions, it can be (used / reported by UE 116) or (configured by NW 130) where for any n, L n = 4 and / or 6 and / or and / or and / or 1 parameter combinations.

[1153] ● In one example (C1), this condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[1154] ● In one example (C2), this condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1155] ● In one example (C3), this condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1156] ● In one example (C4), this condition corresponds to N TRP <3 (i.e., N TRP = 1, 2).

[1157] ● In one example (C5), this condition corresponds to N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1158] ● In one example (C6), this condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1159] ● In one example (C7), this condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1160] ● In one example (C8), this condition corresponds to N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1161] ● In one example (C9), this condition corresponds to K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1162] ● In one example (C10), this condition corresponds to K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1163] ● In one example (C11), this condition corresponds to K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1164] ● In one example (C12), this condition corresponds to K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1165] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[1166] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1167] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1168] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) such that for any n and / or and / or and / or and / or and / or a parameter combination of 1.

[1169] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[1170] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1171] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1172] ● In one example (C4), the condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[1173] ● In one example (C5), the condition corresponds to N TRP <the case of s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1174] ● In one example (C6), the condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1175] ● In one example (C7), the condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1176] ● In one example (C8), the condition corresponds to N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1177] ● In one example (C9), the condition corresponds to the case of K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1178] ● In one example (C10), the condition corresponds to the case of K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1179] ● In one example (C11), the condition corresponds to the case of K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1180] ● In one example (C12), the condition corresponds to the case of K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1181] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[1182] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1183] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the R value is 1 (e.g., via higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1184] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) such that for any n, L n = 4 and / or 6 and / or and / or and / or and / or and / or and / or a parameter combination of 1.

[1185] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[1186] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1187] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1188] ● In one example (C4), the condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[1189] ● In one example (C5), the condition corresponds to the case where N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1190] ● In one example (C6), the condition corresponds to the case where N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1191] ● In one example (C7), the condition corresponds to the case where N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1192] ● In one example (C8), the condition corresponds to the case where N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1193] ● In one example (C9), the condition corresponds to the case where K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1194] ● In one example (C10), the condition corresponds to the case where K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1195] ● In one example (C11), the condition corresponds to the case where K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1196] ● In one example (C12), the condition corresponds to the case where K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1197] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[1198] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1199] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1200] In one example, in the Rel-17 type II codebook, K1 ports are selected from P ports based on L vectors CSI-RS i = 0, 1, …, L - 1, and these vectors are identified by the following formula:

[1201] m = [m (0) …m (L-1)

[1202]

[1203] It is indicated by the index i 1,2 where:

[1204]

[1205] According to the definitions and algorithms in Tables 5.2.2.2.5-4 and 5.2.2.2.7-2, the elements of m can be found through i using C(x,y). 1,2

[1206] In one embodiment, regarding the SD basis vector selection for the (Rel-18) type II codebook refinement of the CJT mTRP based on the Rel-17 type II port selection codebook design, a set of N n ,n = 1,...,N TRP ≥1 combinations of the values of {α L} can be configured by NW 130 through higher layer (RRC) signaling, where N TRP is the number of TRPs (CSI-RS resources) configured by NW 130. The N n ,n = 1,...,N TRP combinations of the values of {α L} can be signaled by using a joint indicator or multiple individual indicators. In one example, N L = 1. In another example, N L > 1..

[1207] In one example, the values of {α n} can be configured based on at least one table described in this disclosure (or any table that can be constructed (i.e., sub-table or entire table)).

[1208] In one example, N L can be explicitly configured by higher layer (RRC) signaling with individual parameters. The possible values of N L are a set of. Let N T represent the total number of tables including combinations of the values of {α n ,n = 1,...,N TRP}. In one example, the N combinations of the values of {α n ,n = 1,...,N TRP} indicated by a parameter of L ​​A combination. In one example, the table can be any table (the entire table or a sub-table) described in the present disclosure, or can be any table that can be constructed as described in the present disclosure.

[1209] In one example, N is implicitly determined or configured by high-layer RRC signaling L .

[1210] ● In one example, an N-bit bitmap is used to indicate N combinations of the values of {α T , n = 1,..., N n}, and the N can be inferred from the configured N-bit bitmap TRP . L T L .

[1211] ● In one example, N combinations of the values of {α n} are determined according to the configured values of {α tot} and their associated α n values. For example, one combination of the values of {α TRP , n = 1,..., N L} is configured, and the other combinations of the values of {α n , n = 1,..., N TRP} associated with the same α tot as the configured combination are determined as N - 1 combinations of the values of {α n , n = 1,..., N TRP}, where n TRP L -1 or

[1212] In one example, when N L > 1, the UE reports an indicator with a -bit size to indicate a selected combination of the values of {α n , n = 1,..., N TRP} in CSI Part 1.

[1213] In one example, when N L = 1, the UE follows the configured value of {α n}, so there is no need to report the value of {α n}.

[1214] In one example, the N n combinations of {α L} are subject to UE 116 regarding or​​​​ Capability.

[1215] In one example, N n combinations of {α L} are subject to the capabilities of UE 116 with respect to or Capability.

[1216] In another embodiment, the UE is configured with a codebook-based CSI report (e.g., via higher layer CSI-ReportConfig) for C-JT transmission from multiple TRPs, as described in this disclosure, where the codebook parameters (such as α or L, β, p v or M v ) are configured via the higher layer parameters "paramCombination-r18" or "paramCombinationCJT-r18".

[1217] ● In one example, the Rel.16 parameter combination table of "paraCombination-r16" is reused for "paramCombination-r18" (refer to Table 1).

[1218] ● In one example, the Rel.17 parameter combination table of "paraCombination-r17" is reused for "paramCombination-r18" (refer to Table 2).

[1219] ● In one example, a new parameter combination table is used for "paramCombination-r18".

[1220] ● In one example, a table containing existing Rel.16 or Rel.17 parameter combinations and one or more new parameter combinations is used for "paramCombination-r18".

[1221] In another embodiment, the table for "paramCombination-r18" is designed based on the following parameter candidates:

[1222] ● α n Candidate values:

[1223] ○ Where α n is α for CSI-RS resource n (TRPn); and

[1224] ○ N TRP ∈ {1, 2, 3, 4} is the number of CSI-RS resources (or TRPs), and is configured by NW 130 via higher layer signaling.

[1225] ● Candidate values of M:

[1226] ● Candidate values of β:

[1227] In one example, any table including at least one combination provided in the tables of the present disclosure can be an example of the table of "paraCombination-r18".

[1228] In one example, when N TRP = 1, any table including at least one parameter combination in the sub - table of Table 33 can be used for the "paramCombination-r18" table.

[1229] The table index numbers in Table 33 (from 1 to 72) should only be interpreted as the indexes of the corresponding parameter combinations. That is to say, the table index number can be any value based on the order of the parameter combinations and the number of parameter combinations in the table.

[1230] In one example, any sub - table of Table 33 can be an example of the "paraCombination-r18" table.

[1231] Although we write α1, M, β as examples in the second, third, and fourth columns of Table 33, they can be arranged in any column order. For example, write M, α1, β in the second, third, and fourth columns.

[1232] [Table 33]

[1233]

[1234]

[1235]

[1236]

[1237] In one example, when N TRP = 2, any table including at least one parameter combination in the sub - table of the table can be used for the "paramCombination-r18" table.

[1238] In Table 34, due to space limitations, we omit the rows that can be clearly calculated (based on the previous rows). In addition, the table index numbers in Table 34 (from 1 to 216) should only be interpreted as the indexes of the corresponding parameter combinations. That is to say, the table index number can be any value based on the order of the parameter combinations and the number of parameter combinations in the table.

[1239] In one example, any sub - table of Table 34 can be an example of the "paraCombination - r18" table.

[1240] Although we write α1, α2, M, β as examples in the second, third, fourth, and fifth columns of Table 34, they can be arranged in any column order. For example, write M, α1, α2, β in the second, third, fourth, and fifth columns.

[1241] [Table 34]

[1242]

[1243]

[1244]

[1245]

[1246]

[1247] In one example, when N TRP = 3, any table including at least one parameter combination in the sub - table of Table 35 can be used for the "paramCombination - r18" table.

[1248] In Table 35, due to space limitations, we omit the rows that can be clearly calculated (based on the previous rows). In addition, the table index numbers in Table 35 (from 1 to 648) should only be interpreted as the indexes of the corresponding parameter combinations. That is, the table index number can be any value based on the order of the parameter combinations and the number of parameter combinations in the table.

[1249] In one example, any sub - table of Table 35 can be an example of the "paraCombination - r18" table.

[1250] Although we write α1, α2, α3, M, β as examples in the second, third, fourth, and fifth columns of Table 35, they can be arranged in any column order. For example, write M, α1, α2, α3, β in the second, third, fourth, and fifth columns.

[1251] [Table 35]

[1252]

[1253]

[1254]

[1255]

[1256]

[1257] In one example, when N TRP = 4, any table including at least one parameter combination in the sub - table of Table 36 can be used for the "paramCombination - r18" table.

[1258] In Table 36, due to space limitations, we have omitted the rows that can be clearly calculated (based on the previous rows). In addition, the table index numbers in Table 36 (from 1 to 1944) should only be interpreted as the indexes of the corresponding parameter combinations. That is, the table index number can be any value based on the order of the parameter combinations and the number of parameter combinations in the table.

[1259] In one example, any sub - table of Table 36 can be used as an example of the "paraCombination - r18" table.

[1260] Although we write α1, α2, α3, α4, M, β as examples in the second, third, fourth, fifth, and sixth columns of Table 36, they can be arranged in any column order. For example, M, α1, α2, α3, α4, β can be written in the second, third, fourth, fifth, and sixth columns.

[1261] [Table 36]

[1262]

[1263]

[1264]

[1265]

[1266]

[1267] In one embodiment, any table including at least one parameter combination in the sub - table of Table 33 / Table 34 / Table 35 / Table 36 associated with {α n}(such that when n1 < n2, α n1 ≥α n2 (non - increasing order)) can be used for the "paramCombination - r18" table.

[1268] In one example, the sorting of TRP can be configured by NW 130 through, for example, RRC, MAC CE, or DCI.

[1269] In one embodiment, any table including at least one parameter combination in the sub - table of Table 33 / Table 34 / Table 35 / Table 36 associated with {α n}(such that when n1 > n2, α n1≥α n2 Any table of at least one parameter combination in the sub-tables of Table 33 / Table 34 / Table 35 / Table 36 associated with (in non-increasing order) can be used for the "paramCombination-r18" table.

[1270] In one example, the sorting of TRP can be configured by NW 130 via, for example, RRC, MAC CE, or DCI.

[1271] In another embodiment, any table including at least one parameter combination in the sub-tables of Table 33 / Table 34 / Table 35 / Table 36 can be used for the "paramCombination-r18" table, where the sub-table includes a parameter combination associated with associated parameter combination, where is a subset of. For example, if then the sub-table includes the parameter combinations associated with M = {1, 2} in Table 33 / Table 34 / Table 35 / Table 36.

[1272] ● In one example, and the sub-table includes the parameter combinations associated with M = 1, 2 in Table 33 / Table 34 / Table 35 / Table 36.

[1273] ● In one example, and the sub-table includes the parameter combinations associated with M = 1, 2, 4 in Table 33 / Table 34 / Table 35 / Table 36.

[1274] ● In one example, and the sub-table includes the parameter combinations associated with M = 1, 2, 3 in Table 33 / Table 34 / Table 35 / Table 36.

[1275] ● In one example, and the sub-table includes the parameter combinations associated with M = 1, 2 in Table 33 / Table 34 / Table 35 / Table 36.

[1276] In another embodiment, any table including at least one parameter combination in the sub-tables of Table 33 / Table 34 / Table 35 / Table 36 can be used for the "paramCombination-r18" table, where the sub-table includes a parameter combination associated with associated parameter combination, where is a subset of. For example, if then the sub-table includes the parameter combinations associated with 1 in Table 33 / Table 34 / Table 35 / Table 36.

[1277] ● In one example, and the sub - table includes parameter combinations associated with those in Table 33 / Table 34 / Table 35 / Table 36 for 1.

[1278] ● In one example, and the sub - table includes parameter combinations associated with those in Table 33 / Table 34 / Table 35 / Table 36 for 1.

[1279] ● In one example, and the sub - table includes parameter combinations associated with those in Table 33 / Table 34 / Table 35 / Table 36 for 1.

[1280] ● In one example, and the sub - table includes parameter combinations associated with those in Table 33 / Table 34 / Table 35 / Table 36 for 1.

[1281] ● In one example, and the sub - table includes parameter combinations associated with those in Table 33 / Table 34 / Table 35 / Table 36 for 1.

[1282] In another embodiment, any table that includes at least one parameter combination from the sub - tables of Table 33 / Table 34 / Table 35 / Table 36 can be used for the "paramCombination - r18" table, where the sub - table includes parameter combinations associated with and where is defined in one or more of the embodiments described herein, and is defined in one or more of the embodiments described herein.

[1283] In one example, the sub - table includes parameter combinations associated with the following:

[1284] ● and

[1285] In another embodiment, for any table described herein or any table (whole table or sub - table) that can be constructed through one or more of the embodiments described herein, in addition to α n , M, and β, the table can also include α tot , and it can be used for the "paramCombination - r18" table.

[1286] In one example, Table 37 can be described as including α n , in addition to M and β, and also including α totAn example of a table based on Table 36.

[1287] [Table 37]

[1288]

[1289]

[1290] In another embodiment, for any table described herein or any table (whole table or sub - table) that can be constructed by one or more embodiments described herein, in addition to α n 、M and β, the table may further include α tot and N (or N TRP ), and it can be used for the "paramCombination - r18" table.

[1291] In one example, Table 38 may be an example of a table that describes including α n 、M and β, and further including α tot and N (or N TRP ), and this table is based on Table 36.

[1292] [Table 38]

[1293]

[1294] In this example, α tot in the table is calculated by .

[1295] In another example, α tot can be calculated by .

[1296] In one example, Table 39 may be an example of a table that describes including α n 、M and β, and further including α tot and N (or N TRP ), and this table is based on the combination of Table 33 / Table 34 / Table 35 / Table 36.

[1297] [Table 39]

[1298]

[1299]

[1300] In this example, α tot in the table is calculated by .

[1301] In another example, α tot can be calculated by .

[1302] In another example, the blanks in the table can be replaced with 0 values, for example as shown below:

[1303] [Table 40]

[1304]

[1305]

[1306] In this example, α in the table tot is calculated by .

[1307] In another example, α tot can be calculated by .

[1308] In another embodiment, for any table described herein or any table (the whole table or a sub-table) that can be constructed by one or more embodiments described herein, in addition to α n , M and β, the table can further include N (or N TRP ), and it can be used for the "paramCombination-r18" table.

[1309] In one example, Table 11 can be an example of a table that describes including N and (or N TRP ) in addition to α, M and β, and this table is based on Table 36.

[1310] [Table 41]

[1311]

[1312]

[1313] In one example, Table 42 can be an example of a table that describes including L n , p v and β, and further includes L tot and N (or N TRP ), and this table is based on the combination of Table 33 / Table 34 / Table 35 / Table 36.

[1314] [Table 42]

[1315]

[1316]

[1317] In another example, the blanks in the table can be replaced with 0 values, for example as shown below:

[1318] [Table 43]

[1319]

[1320]

[1321] For any table described in this disclosure or any table that can be constructed by any embodiment, a table with a different column order can also be construed as an embodiment of this disclosure.

[1322] In another embodiment, a subset of parameter combinations in a table designed for the "paramCombination-r18" table based on one or more of the embodiments described herein can be restricted to not be configured based on one or more aspects, such as the number of TRPs (N TRP )), the number of SBs K (numberOfPMI-SubbandsPerCQI-Subband), and the number of CSI-RS ports (2N1N2 or P CSI-RS ).

[1323] In one example, under certain conditions, parameter combinations in which α n = 1 and / or 3 / 4 for any n can be used / reported (by UE 116) or configured (by NW 130).

[1324] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for a TRP) = 32.

[1325] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for a TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1326] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for a TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1327] ● In one example (C4), the condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[1328] ● In one example (C5), the condition corresponds to N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1329] ● In one example (C6), the condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1330] ● In one example (C7), the condition corresponds to the case where N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1331] ● In one example (C8), the condition corresponds to the case where N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1332] ● In one example (C9), the condition corresponds to the case where K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1333] ● In one example (C10), the condition corresponds to the case where K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1334] ● In one example (C11), the condition corresponds to the case where K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1335] ● In one example (C12), the condition corresponds to the case where K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1336] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[1337] ● In one example (C10), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1338] ● In one example (C11), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1339] In one example, under certain conditions, a parameter combination where M = 2 and / or 3 and / or 4 for any n can be used / reported (by UE 116) or configured (by NW 130).

[1340] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[1341] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1342] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1343] ● In one example (C4), the condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[1344] ● In one example (C5), the condition corresponds to N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1345] ● In one example (C6), the condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1346] ● In one example (C7), the condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1347] ● In one example (C8), the condition corresponds to N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1348] ● In one example (C9), the condition corresponds to the case where K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1349] ● In one example (C10), the condition corresponds to the case where K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1350] ● In one example (C11), the condition corresponds to the case where K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1351] ● In one example (C12), the condition corresponds to the case where K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1352] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[1353] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1354] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1355] In one example, under certain conditions, a parameter combination where M = 1 for any n can be used / reported (by UE 116) or configured (by NW 130).

[1356] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[1357] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1358] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1359] ● In one example (C4), the condition corresponds to NTRP <3 (i.e., N TRP = 1, 2) cases.

[1360] ● In one example (C5), this condition corresponds to N TRP < the case of s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1361] ● In one example (C6), this condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1362] ● In one example (C7), this condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1363] ● In one example (C8), this condition corresponds to N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1364] ● In one example (C9), this condition corresponds to K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1365] ● In one example (C10), this condition corresponds to K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1366] ● In one example (C11), this condition corresponds to K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1367] ● In one example (C12), this condition corresponds to K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1368] ● In one example (C13), this condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[1369] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., configured via the higher layer numberOfPMIsubbandPerCQIsubband).

[1370] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., configured via RI restriction), and the value of R is 1 (e.g., configured via the higher layer numberOfPMIsubbandPerCQIsubband).

[1371] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) such that for any n and / or and / or a parameter combination of 1.

[1372] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[1373] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1374] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1375] ● In one example (C4), the condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[1376] ● In one example (C5), the condition corresponds to N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1377] ● In one example (C6), the condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1378] ● In one example (C7), the condition corresponds to NTRP > the case of s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1379] ● In one example (C8), the condition corresponds to N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1380] ● In one example (C9), the condition corresponds to K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1381] ● In one example (C10), the condition corresponds to K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1382] ● In one example (C11), the condition corresponds to K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1383] ● In one example (C12), the condition corresponds to K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1384] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[1385] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1386] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1387] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) such that for any n, the parameter combinations where α n = 1 and / or 3 / 4 and / or M = 2 and / or 3 and / or 4 and / or 1.

[1388] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[1389] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1390] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1391] ● In one example (C4), the condition corresponds to N TRP < 3 (i.e., N TRP = 1, 2).

[1392] ● In one example (C5), the condition corresponds to N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1393] ● In one example (C6), the condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1394] ● In one example (C7), the condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1395] ● In one example (C8), the condition corresponds to N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1396] ● In one example (C9), the condition corresponds to the case where K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1397] ● In one example (C10), the condition corresponds to the case where K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1398] ● In one example (C11), the condition corresponds to the case where K > k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1399] ● In one example (C12), the condition corresponds to the case where K ≥ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1400] ● In one example (C13), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration).

[1401] ● In one example (C14), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1402] ● In one example (C15), the condition corresponds to C1 and / or C2 and / or C3 and / or C4 and / or C5 and / or C6 and / or C7 and / or C8 and / or C9 and / or C10 and / or C11 and / or C12, and the maximum rank value (for RI reporting) is 2 (e.g., via RI restriction configuration), and the value of R is 1 (e.g., via the higher layer numberOfPMIsubbandPerCQIsubband configuration).

[1403] In one example, under certain conditions, it can be used / reported (by UE 116) or configured (by NW 130) such that for any n, α n = 1 and / or 3 / 4 and / or and / or and / or a parameter combination of 1.

[1404] ● In one example (C1), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) = 32.

[1405] ● In one example (C2), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) ≥ t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1406] ● In one example (C3), the condition corresponds to the case where the number of CSI-RS ports (for the TRP) > t, where t is a threshold that can be fixed, configured, or subject to UE capabilities.

[1407] ● In one example (C4), the condition corresponds to N TRP <3 (i.e., N TRP = 1, 2).

[1408] ● In one example (C5), the condition corresponds to N TRP < s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1409] ● In one example (C6), the condition corresponds to N TRP ≤ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1410] ● In one example (C7), the condition corresponds to N TRP > s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1411] ● In one example (C8), the condition corresponds to N TRP ≥ s, where s is a threshold that can be fixed, configured, or subject to UE capabilities.

[1412] ● In one example (C9), the condition corresponds to K < k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1413] ● In one example (C10), the condition corresponds to K ≤ k, where k is a threshold that can be fixed, configured, or subject to UE capabilities.

[1414] ● In one...

Claims

1. A user equipment (UE) comprising: A transceiver; And A processor operatively coupled to the transceiver and configured to: Receive information regarding (i) a channel state information (CSI) report associated with N TRP ≥1 CSI reference signal (CSI-RS) resources and (ii) N l ≥1 values of information, where: each of the N L values belongs to a table including N TRP , and an associated index, and is a digital tuple of spatial domain (SD) basis vectors L TRP associated with CSI-RS resources r = 1, …, N r ; Determine a CSI report based on the information; and Transmit the determined CSI report.

2. The UE according to claim 1, wherein: When N L > 1, the processor is further configured to: Select one of the N L values; Determine a CSI report associated with a selected value; and In CSI part 1 via the CSI report, the indicator of the bits includes the selected value in the CSI report, and When N L = 1, the processor is further configured to: Determine the CSI report associated with the value; And Omit the indicator for selecting the value in the CSI report.

3. The UE according to claim 1, wherein, The table includes one or more of the following values:

4. The UE according to claim 1, wherein The table includes one or more of the following values:

5. The UE according to claim 1, wherein, When the number of CSI-RS ports (P CSI-RS ) of the CSI-RS resource r is greater than 4, for a certain r ∈ {1, …, N TRP}, having L r = 4 is allowed to be included in the information about for the N L values.

6. The UE according to claim 1, wherein, Meet of is not allowed to be included in the information about N L values of where L max is a value associated with the UE capability of the total number of supported SD basis vectors for N TRP CSI-RS resources.

7. A base station (BS) comprising: A transceiver; And A processor operatively coupled to the transceiver and configured to: Transmit information regarding (i) a channel state information (CSI) report associated with N TRP ≥1 CSI reference signal (CSI-RS) resources and (ii) N L ≥1 values, where: each of the N L values belongs to a table including N TRP , and an associated index, and is a digital tuple of spatial domain (SD) basis vectors L TRP associated with CSI-RS resources r = 1, …, N r ; Receive a CSI report based on the information.

8. The BS according to claim 7, wherein: When N L > 1: CSI report and the N of L a selected value among the values, and Among them, the selected value is included in the CSI part 1 of the CSI report via the indicator of bits and is included in the CSI report, and In N L when = 1: The CSI report is associated with the value, and The CSI report does not include any indicator for selecting the value.

9. The BS according to claim 7, wherein The table includes one or more of the following values:

10. The BS according to claim 7, wherein The table includes one or more of the following values:

11. The BS according to claim 7, wherein When the number (P CSI-RS ) of CSI-RS ports of a CSI-RS resource r is greater than 4, for a certain r ∈ {1, …, N TRP}, having L r = 4 is allowed to be included in the information regarding for N L values.

12. The BS according to claim 7, wherein Meet of is not allowed to be included in the information about N L values of where L max is a value associated with the UE capability of the total number of supported SD basis vectors for N TRP CSI-RS resources.

13. A method performed by a user equipment (UE), the method comprising: Receive information regarding (i) a channel state information (CSI) report associated with N TRP ≥1 CSI reference signal (CSI-RS) resources and (ii) N L ≥1 values of information, where: each of the N L values is indicated based on a table including N TRP , and an associated index, and is a digital tuple of spatial domain (SD) basis vectors L TRP associated with CSI-RS resources r = 1, …, N r ; Determine a CSI report based on the information; and Transmit the determined CSI report.

14. The method according to claim 13, wherein: When N L > 1, the method further includes: Select one value from among N L values; and The indicator of the bits in CSI part 1 via the CSI report includes the selected value in the CSI report, ​ Wherein determining the CSI report further comprises determining a CSI report associated with a selected value, and In the case of N L = 1, determining that the CSI report further includes: Determine the CSI report associated with the value; and Omit the indicator for selecting the value in the CSI report.

15. A method performed by a base station (BS), the method comprising: Transmit information regarding (i) a channel state information (CSI) report associated with ≥ 1 CSI reference signal (CSI-RS) resources and (ii) TRP of N ≥ 1 values, where: L ​ each of the N L values belongs to a table including N TRP , and an associated index, and is a digital tuple of spatial domain (SD) basis vectors L TRP associated with CSI-RS resources r = 1, …, N r ; Receive a CSI report based on the information.

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