WO2023203467A1

WO2023203467A1 - Configuring information for a channel state information report

Info

Publication number: WO2023203467A1
Application number: PCT/IB2023/053921
Authority: WO
Inventors: Ahmed HINDY; Vijay Nangia
Original assignee: Lenovo (Singapore) Pte. Ltd.
Priority date: 2022-04-19
Filing date: 2023-04-17
Publication date: 2023-10-26

Abstract

Apparatuses, methods, and systems are disclosed for configuring information for a channel state information ("CSI") report. One method (900) includes receiving (902), at a user equipment ("UE"), a CSI reporting setting from a network. The CSI reporting setting corresponds to joint transmission from network nodes. The method (900) includes receiving (904) CSI reference signal ("CSI-RS") segments configured for channel measurement based on the CSI reporting setting. The method (900) includes receiving (906) a configuration corresponding to at least one sounding reference signal ("SRS") segment. Each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the CSI-RS segments. The method (900) includes generating (908) a set of channel quality indicator ("CQI") values, a set of precoder matrix indicator ("PMI") values, or a combination thereof based on the CSI-RS segments.

Description

CONFIGURING INFORMATION FOR A CHANNEL STATE INFORMATION REPORT FIELD [0001] The subject matter disclosed herein relates generally to wireless communications and more particularly relates to configuring information for a channel state information (“CSI”) report. BACKGROUND [0002] In certain wireless communications networks, CSI reports may be used. In such networks, the CSI reports may be inefficient. BRIEF SUMMARY [0003] Methods for configuring information for a CSI report are disclosed. Apparatuses and systems also perform the functions of the methods. One embodiment of a method includes receiving, at a user equipment (“UE”), a CSI reporting setting from a network. The CSI reporting setting corresponds to joint transmission from a plurality of network nodes. In some embodiments, the method includes receiving a plurality of CSI reference signal (“RS”) (“CSI-RS”) segments configured for channel measurement based on the CSI reporting setting. In certain embodiments, the method includes receiving a configuration corresponding to at least one sounding reference signal (“SRS”) segment. Each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the plurality of CSI-RS segments. In various embodiments, the method includes generating a set of channel quality indicator (“CQI”) values, a set of precoder matrix indicator (“PMI”) values, or a combination thereof based on the plurality of CSI-RS segments. In some embodiments, the method includes reporting, to the network, a CSI report including the set of CQI values, the set of PMI values, or the combination thereof. [0004] One apparatus for configuring information for a CSI report includes a receiver to: receive a CSI reporting setting from a network, wherein the CSI reporting setting corresponds to joint transmission from a plurality of network nodes; receive a plurality of CSI-RS segments configured for channel measurement based on the CSI reporting setting; and receive a configuration corresponding to at least one SRS segment. Each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the plurality of CSI-RS segments. In various embodiments, the apparatus includes a processor to generate a set of CQI values, a set of PMI values, or a combination thereof based on the plurality of CSI-RS segments. In some embodiments, the apparatus includes a transmitter to report, to the network, a CSI report including the set of CQI values, the set of PMI values, or the combination thereof. [0005] Another embodiment of a method for configuring information for a CSI report includes transmitting, from a network device, a CSI reporting setting to a UE. The CSI reporting setting corresponds to joint transmission from a plurality of network nodes. In some embodiments, the method includes transmitting a plurality of CSI-RS segments configured for channel measurement based on the CSI reporting setting. In certain embodiments, the method includes transmitting a configuration corresponding to at least one SRS segment. Each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the plurality of CSI-RS segments. In various embodiments, the method includes receiving, from the UE, a CSI report including a set of CQI values, a set of PMI values, or a combination thereof based on the plurality of CSI-RS segments. [0006] Another apparatus for configuring information for a CSI report includes a transmitter to: transmit a CSI reporting setting to a UE, wherein the CSI reporting setting corresponds to joint transmission from a plurality of network nodes; transmit a plurality of CSI- RS segments configured for channel measurement based on the CSI reporting setting; and transmit a configuration corresponding to at least one SRS segment. Each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the plurality of CSI-RS segments. In various embodiments, the apparatus includes a receiver to receive, from the UE, a CSI report including a set of CQI values, a set of PMI values, or a combination thereof based on the plurality of CSI-RS segments. BRIEF DESCRIPTION OF THE DRAWINGS [0007] A more particular description of the embodiments briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only some embodiments and are not therefore to be considered to be limiting of scope, the embodiments will be described and explained with additional specificity and detail through the use of the accompanying drawings, in which: [0008] Figure 1 is a schematic block diagram illustrating one embodiment of a wireless communication system for configuring information for a CSI report; [0009] Figure 2 is a schematic block diagram illustrating one embodiment of an apparatus that may be used for configuring information for a CSI report; [0010] Figure 3 is a schematic block diagram illustrating one embodiment of an apparatus that may be used for configuring information for a CSI report; [0011] Figure 4 illustrates one embodiment of an abstract syntax notation 1 (“ASN.1”) code for an NZP-CSI-RS-ResourceSet information element (“IE”) with coherent joint transmission (“CJT”) indication including n CSI-RS-resource-Groups; [0012] Figure 5 illustrates another embodiment of an ASN.1 code for NZP-CSI-RS- ResourceSet IE with CJT indication including n CSI-RS-port-Groups; [0013] Figure 6 illustrates one embodiment of ASN.1 code for CSI-ReportConfig Reporting Setting IE with CJT indication including n PMI; [0014] Figure 7 illustrates another embodiment of ASN.1 code for CodebookConfig Codebook Configuration IE with CJT indication including n PMI; [0015] Figure 8 illustrates one embodiment of ASN.1 code for CSI-ReportConfig Reporting Setting IE with CJT indication including SRS-ForCJT; [0016] Figure 9 is a flow chart diagram illustrating one embodiment of a method for configuring information for a CSI report; and [0017] Figure 10 is a flow chart diagram illustrating another embodiment of a method for configuring information for a CSI report. DETAILED DESCRIPTION [0018] As will be appreciated by one skilled in the art, aspects of the embodiments may be embodied as a system, apparatus, method, or program product. Accordingly, embodiments may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, micro-code, etc.) or an embodiment combining software and hardware aspects that may all generally be referred to herein as a “circuit,” “module” or “system.” Furthermore, embodiments may take the form of a program product embodied in one or more computer readable storage devices storing machine readable code, computer readable code, and/or program code, referred hereafter as code. The storage devices may be tangible, non-transitory, and/or non-transmission. The storage devices may not embody signals. In a certain embodiment, the storage devices only employ signals for accessing code. [0019] Certain of the functional units described in this specification may be labeled as modules, in order to more particularly emphasize their implementation independence. For example, a module may be implemented as a hardware circuit comprising custom very-large-scale integration (“VLSI”) circuits or gate arrays, off-the-shelf semiconductors such as logic chips, transistors, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like. [0020] Modules may also be implemented in code and/or software for execution by various types of processors. An identified module of code may, for instance, include one or more physical or logical blocks of executable code which may, for instance, be organized as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may include disparate instructions stored in different locations which, when joined logically together, include the module and achieve the stated purpose for the module. [0021] Indeed, a module of code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Similarly, operational data may be identified and illustrated herein within modules, and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different computer readable storage devices. Where a module or portions of a module are implemented in software, the software portions are stored on one or more computer readable storage devices. [0022] Any combination of one or more computer readable medium may be utilized. The computer readable medium may be a computer readable storage medium. The computer readable storage medium may be a storage device storing the code. The storage device may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, holographic, micromechanical, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. [0023] More specific examples (a non-exhaustive list) of the storage device would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (“RAM”), a read-only memory (“ROM”), an erasable programmable read-only memory (“EPROM” or Flash memory), a portable compact disc read- only memory (“CD-ROM”), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. [0024] Code for carrying out operations for embodiments may be any number of lines and may be written in any combination of one or more programming languages including an object oriented programming language such as Python, Ruby, Java, Smalltalk, C++, or the like, and conventional procedural programming languages, such as the "C" programming language, or the like, and/or machine languages such as assembly languages. The code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer may be connected to the user's computer through any type of network, including a local area network (“LAN”) or a wide area network (“WAN”), or the connection may be made to an external computer (for example, through the Internet using an Internet Service Provider). [0025] Reference throughout this specification to “one embodiment,” “an embodiment,” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases “in one embodiment,” “in an embodiment,” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment, but mean “one or more but not all embodiments” unless expressly specified otherwise. The terms “including,” “comprising,” “having,” and variations thereof mean “including but not limited to,” unless expressly specified otherwise. An enumerated listing of items does not imply that any or all of the items are mutually exclusive, unless expressly specified otherwise. The terms “a,” “an,” and “the” also refer to “one or more” unless expressly specified otherwise. [0026] Furthermore, the described features, structures, or characteristics of the embodiments may be combined in any suitable manner. In the following description, numerous specific details are provided, such as examples of programming, software modules, user selections, network transactions, database queries, database structures, hardware modules, hardware circuits, hardware chips, etc., to provide a thorough understanding of embodiments. One skilled in the relevant art will recognize, however, that embodiments may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of an embodiment. [0027] Aspects of the embodiments are described below with reference to schematic flowchart diagrams and/or schematic block diagrams of methods, apparatuses, systems, and program products according to embodiments. It will be understood that each block of the schematic flowchart diagrams and/or schematic block diagrams, and combinations of blocks in the schematic flowchart diagrams and/or schematic block diagrams, can be implemented by code. The code may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the schematic flowchart diagrams and/or schematic block diagrams block or blocks. [0028] The code may also be stored in a storage device that can direct a computer, other programmable data processing apparatus, or other devices to function in a particular manner, such that the instructions stored in the storage device produce an article of manufacture including instructions which implement the function/act specified in the schematic flowchart diagrams and/or schematic block diagrams block or blocks. [0029] The code may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the code which execute on the computer or other programmable apparatus provide processes for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. [0030] The schematic flowchart diagrams and/or schematic block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of apparatuses, systems, methods and program products according to various embodiments. In this regard, each block in the schematic flowchart diagrams and/or schematic block diagrams may represent a module, segment, or portion of code, which includes one or more executable instructions of the code for implementing the specified logical function(s). [0031] It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the Figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. Other steps and methods may be conceived that are equivalent in function, logic, or effect to one or more blocks, or portions thereof, of the illustrated Figures. [0032] Although various arrow types and line types may be employed in the flowchart and/or block diagrams, they are understood not to limit the scope of the corresponding embodiments. Indeed, some arrows or other connectors may be used to indicate only the logical flow of the depicted embodiment. For instance, an arrow may indicate a waiting or monitoring period of unspecified duration between enumerated steps of the depicted embodiment. It will also be noted that each block of the block diagrams and/or flowchart diagrams, and combinations of blocks in the block diagrams and/or flowchart diagrams, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and code. [0033] The description of elements in each figure may refer to elements of proceeding figures. Like numbers refer to like elements in all figures, including alternate embodiments of like elements. [0034] Figure 1 depicts an embodiment of a wireless communication system 100 for configuring information for a CSI report. In one embodiment, the wireless communication system 100 includes remote units 102 and network units 104. Even though a specific number of remote units 102 and network units 104 are depicted in Figure 1, one of skill in the art will recognize that any number of remote units 102 and network units 104 may be included in the wireless communication system 100. [0035] In one embodiment, the remote units 102 may include computing devices, such as desktop computers, laptop computers, personal digital assistants (“PDAs”), tablet computers, smart phones, smart televisions (e.g., televisions connected to the Internet), set-top boxes, game consoles, security systems (including security cameras), vehicle on-board computers, network devices (e.g., routers, switches, modems), aerial vehicles, drones, or the like. In some embodiments, the remote units 102 include wearable devices, such as smart watches, fitness bands, optical head-mounted displays, or the like. Moreover, the remote units 102 may be referred to as subscriber units, mobiles, mobile stations, users, terminals, mobile terminals, fixed terminals, subscriber stations, UE, user terminals, a device, or by other terminology used in the art. The remote units 102 may communicate directly with one or more of the network units 104 via uplink (“UL”) communication signals. In certain embodiments, the remote units 102 may communicate directly with other remote units 102 via sidelink communication. [0036] The network units 104 may be distributed over a geographic region. In certain embodiments, a network unit 104 may also be referred to and/or may include one or more of an access point, an access terminal, a base, a base station, a location server, a core network (“CN”), a radio network entity, a Node-B, an evolved node-B (“eNB”), a 5G node-B (“gNB”), a Home Node-B, a relay node, a device, a core network, an aerial server, a radio access node, an access point (“AP”), new radio (“NR”), a network entity, an access and mobility management function (“AMF”), a unified data management (“UDM”), a unified data repository (“UDR”), a UDM/UDR, a policy control function (“PCF”), a radio access network (“RAN”), a network slice selection function (“NSSF”), an operations, administration, and management (“OAM”), a session management function (“SMF”), a user plane function (“UPF”), an application function, an authentication server function (“AUSF”), security anchor functionality (“SEAF”), trusted non- third generation partnership project (“3GPP”) gateway function (“TNGF”), or by any other terminology used in the art. The network units 104 are generally part of a radio access network that includes one or more controllers communicably coupled to one or more corresponding network units 104. The radio access network is generally communicably coupled to one or more core networks, which may be coupled to other networks, like the Internet and public switched telephone networks, among other networks. These and other elements of radio access and core networks are not illustrated but are well known generally by those having ordinary skill in the art. [0037] In one implementation, the wireless communication system 100 is compliant with NR protocols standardized in 3GPP, wherein the network unit 104 transmits using an orthogonal frequency division multiplexing (“OFDM”) modulation scheme on the downlink (“DL”) and the remote units 102 transmit on the UL using a single-carrier frequency division multiple access (“SC-FDMA”) scheme or an OFDM scheme. More generally, however, the wireless communication system 100 may implement some other open or proprietary communication protocol, for example, WiMAX, institute of electrical and electronics engineers (“IEEE”) 802.11 variants, global system for mobile communications (“GSM”), general packet radio service (“GPRS”), universal mobile telecommunications system (“UMTS”), long term evolution (“LTE”) variants, code division multiple access 2000 (“CDMA2000”), Bluetooth®, ZigBee, Sigfox, among other protocols. The present disclosure is not intended to be limited to the implementation of any particular wireless communication system architecture or protocol. [0038] The network units 104 may serve a number of remote units 102 within a serving area, for example, a cell or a cell sector via a wireless communication link. The network units 104 transmit DL communication signals to serve the remote units 102 in the time, frequency, and/or spatial domain. [0039] In various embodiments, a remote unit 102 may receive, at a UE, a CSI reporting setting from a network. The CSI reporting setting corresponds to joint transmission from a plurality of network nodes. In some embodiments, the remote unit 102 may receive a plurality of CSI-RS segments configured for channel measurement based on the CSI reporting setting. In certain embodiments, the remote unit 102 may receive a configuration corresponding to at least one SRS segment. Each SRS segment of the at least one SRS segment is associated with a CSI- RS segment of the plurality of CSI-RS segments. In various embodiments, the remote unit 102 may generate a set of CQI values, a set of PMI values, or a combination thereof based on the plurality of CSI-RS segments. In some embodiments, the remote unit 102 may report, to the network, a CSI report including the set of CQI values, the set of PMI values, or the combination thereof. Accordingly, the remote unit 102 may be used for configuring information for a CSI report. [0040] In certain embodiments, a network unit 104 may transmit a CSI reporting setting to a UE. The CSI reporting setting corresponds to joint transmission from a plurality of network nodes. In some embodiments, the network unit 104 may transmit a plurality of CSI-RS segments configured for channel measurement based on the CSI reporting setting. In certain embodiments, the network unit 104 may transmit a configuration corresponding to at least one SRS segment. Each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the plurality of CSI-RS segments. In various embodiments, the network unit 104 may receive, from the UE, a CSI report including a set of CQI values, a set of PMI values, or a combination thereof based on the plurality of CSI-RS segments. Accordingly, the network unit 104 may be used for configuring information for a CSI report. [0041] Figure 2 depicts one embodiment of an apparatus 200 that may be used for configuring information for a CSI report. The apparatus 200 includes one embodiment of the remote unit 102. Furthermore, the remote unit 102 may include a processor 202, a memory 204, an input device 206, a display 208, a transmitter 210, and a receiver 212. In some embodiments, the input device 206 and the display 208 are combined into a single device, such as a touchscreen. In certain embodiments, the remote unit 102 may not include any input device 206 and/or display 208. In various embodiments, the remote unit 102 may include one or more of the processor 202, the memory 204, the transmitter 210, and the receiver 212, and may not include the input device 206 and/or the display 208. [0042] The processor 202, in one embodiment, may include any known controller capable of executing computer-readable instructions and/or capable of performing logical operations. For example, the processor 202 may be a microcontroller, a microprocessor, a central processing unit (“CPU”), a graphics processing unit (“GPU”), an auxiliary processing unit, a field programmable gate array (“FPGA”), or similar programmable controller. In some embodiments, the processor 202 executes instructions stored in the memory 204 to perform the methods and routines described herein. The processor 202 is communicatively coupled to the memory 204, the input device 206, the display 208, the transmitter 210, and the receiver 212. [0043] The memory 204, in one embodiment, is a computer readable storage medium. In some embodiments, the memory 204 includes volatile computer storage media. For example, the memory 204 may include a RAM, including dynamic RAM (“DRAM”), synchronous dynamic RAM (“SDRAM”), and/or static RAM (“SRAM”). In some embodiments, the memory 204 includes non-volatile computer storage media. For example, the memory 204 may include a hard disk drive, a flash memory, or any other suitable non-volatile computer storage device. In some embodiments, the memory 204 includes both volatile and non-volatile computer storage media. In some embodiments, the memory 204 also stores program code and related data, such as an operating system or other controller algorithms operating on the remote unit 102. [0044] The input device 206, in one embodiment, may include any known computer input device including a touch panel, a button, a keyboard, a stylus, a microphone, or the like. In some embodiments, the input device 206 may be integrated with the display 208, for example, as a touchscreen or similar touch-sensitive display. In some embodiments, the input device 206 includes a touchscreen such that text may be input using a virtual keyboard displayed on the touchscreen and/or by handwriting on the touchscreen. In some embodiments, the input device 206 includes two or more different devices, such as a keyboard and a touch panel. [0045] The display 208, in one embodiment, may include any known electronically controllable display or display device. The display 208 may be designed to output visual, audible, and/or haptic signals. In some embodiments, the display 208 includes an electronic display capable of outputting visual data to a user. For example, the display 208 may include, but is not limited to, a liquid crystal display (“LCD”), a light emitting diode (“LED”) display, an organic light emitting diode (“OLED”) display, a projector, or similar display device capable of outputting images, text, or the like to a user. As another, non-limiting, example, the display 208 may include a wearable display such as a smart watch, smart glasses, a heads-up display, or the like. Further, the display 208 may be a component of a smart phone, a personal digital assistant, a television, a table computer, a notebook (laptop) computer, a personal computer, a vehicle dashboard, or the like. [0046] In certain embodiments, the display 208 includes one or more speakers for producing sound. For example, the display 208 may produce an audible alert or notification (e.g., a beep or chime). In some embodiments, the display 208 includes one or more haptic devices for producing vibrations, motion, or other haptic feedback. In some embodiments, all or portions of the display 208 may be integrated with the input device 206. For example, the input device 206 and display 208 may form a touchscreen or similar touch-sensitive display. In other embodiments, the display 208 may be located near the input device 206. [0047] In certain embodiments, the receiver 212 to: receive a CSI reporting setting from a network, wherein the CSI reporting setting corresponds to joint transmission from a plurality of network nodes; receive a plurality of CSI-RS segments configured for channel measurement based on the CSI reporting setting; and receive a configuration corresponding to at least one SRS segment. Each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the plurality of CSI-RS segments. In various embodiments, the processor 202 to generate a set of CQI values, a set of PMI values, or a combination thereof based on the plurality of CSI-RS segments. In some embodiments, the transmitter 210 to report, to the network, a CSI report including the set of CQI values, the set of PMI values, or the combination thereof. [0048] Although only one transmitter 210 and one receiver 212 are illustrated, the remote unit 102 may have any suitable number of transmitters 210 and receivers 212. The transmitter 210 and the receiver 212 may be any suitable type of transmitters and receivers. In one embodiment, the transmitter 210 and the receiver 212 may be part of a transceiver. [0049] Figure 3 depicts one embodiment of an apparatus 300 that may be used for configuring information for a CSI report. The apparatus 300 includes one embodiment of the network unit 104. Furthermore, the network unit 104 may include a processor 302, a memory 304, an input device 306, a display 308, a transmitter 310, and a receiver 312. As may be appreciated, the processor 302, the memory 304, the input device 306, the display 308, the transmitter 310, and the receiver 312 may be substantially similar to the processor 202, the memory 204, the input device 206, the display 208, the transmitter 210, and the receiver 212 of the remote unit 102, respectively. [0050] In certain embodiments, the transmitter 310 to: transmit a CSI reporting setting to a UE, wherein the CSI reporting setting corresponds to joint transmission from a plurality of network nodes; transmit a plurality of CSI-RS segments configured for channel measurement based on the CSI reporting setting; and transmit a configuration corresponding to at least one SRS segment. Each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the plurality of CSI-RS segments. In various embodiments, the receiver 312 to receive, from the UE, a CSI report including a set of CQI values, a set of PMI values, or a combination thereof based on the plurality of CSI-RS segments. [0051] It should be noted that one or more embodiments described herein may be combined into a single embodiment. [0052] In certain embodiments, such as for 3GPP new radio (“NR”), multiple panel, transmission and reception point (“TRP”), and/or remote radio head (“RRH”) nodes within a cell may communicate simultaneously with one user equipment (“UE”) to enhance coverage, throughput, and/or reliability. The panels, TRPs, and/or RRHs may not be co-located (e.g., they may be placed in remote locations). Communicating with a same UE via multiple nodes may come at the expense of excessive control signaling between the network side and the UE side so as to communicate the best transmission configuration (e.g., whether to support multi-point transmission), and, if so, which panel would operate simultaneously in addition to a possibly super- linear increase in the amount of CSI feedback reported from the UE to the network since a distinct codebook may be needed for each point. For Type-II codebook with high resolution, a number of precoder matrix indicator (“PMI”) bits fed back from the UE in a gNB via uplink control information (“UCI”) may be very large (e.g., > 1000 bits at a large bandwidth) even for a single- point transmission. The purpose of multi-panel transmission may be to improve spectral efficiency, reliability, and/or robustness of the connection in different scenarios, and may covers both ideal and nonideal backhaul. For increasing the reliability using multi-panel transmission, ultra-reliable low-latency communication (“URLLC”) under multi-panel transmission may be used, where the UE may be served by multiple TRPs forming a coordination cluster (e.g., possibly connected to a central processing unit). [0053] In some embodiments, presence of K panels (or more generally K network nodes) may trigger up to 2^K-1 possible transmission hypotheses. For instance, at K=4, the following 15 transmission hypotheses are possible: 1) 4 single-TRP transmission hypotheses for TRPs 1,2,3,4; 2) 6 double-TRP transmission hypotheses for TRP pairs {1,2}, {1,3}, {1,4}, {2,3}, {2,4}, {3,4}; 3) 4 triple-TRP transmission hypotheses for TRP triplets {1,2,3}, {1,2,4}, {1,3,4}, {2,3,4}; and 4) 1 quadruple TRP hypothesis for TRP quadruplet {1,2,3,4}. [0054] In various embodiments, under a single-user full buffer scenario, a sufficient number of UEs exist in each cell such that each TRP can serve one UE, a selection of one hypothesis from the given transmission hypotheses may lead to a distinct interference hypothesis, since a TRP not serving the UE would serve another UE over the same time and/or frequency resources leading to interference at the given UE. In light of that, a flexible interference management framework may be used for coherent joint transmission under an arbitrary transmission and/or interference hypothesis. In certain embodiments, such as time-division duplexing (“TDD”) networks, uplink (“UL”) and/or downlink (“DL”) channel reciprocity may be relatively strong, and hence uplink reference signals may provide a high-resolution indication of the interference level in the corresponding downlink channel. However, some embodiments may be applicable to frequency division duplexing (“FDD”) networks since several works have shown that partial UL and/or DL channel reciprocity may hold for such networks under the assumption of small duplexing distance (e.g., frequency shift between an uplink band and the corresponding downlink band). [0055] In various embodiments, there may be a set of CSI reports corresponding to all transmission and/or interference hypotheses reported to a network. In such embodiments, CSI feedback overhead grows exponentially with the number of network nodes, since a system that supports joint transmission from up to K network nodes corresponds to up to 2^K-1 possible transmission hypotheses. [0056] In certain embodiments, a set of CSI reports corresponding to a subset of the set of all transmission and/or interference hypotheses is reported to a network based on either network configuration, UE feedback, or both. In such embodiments, a selected subset of transmission and/or interference hypotheses for which CSI feedback is reported based on channel quality may not match the scheduling-based transmission hypotheses selected by the network based on instantaneous traffic considerations. It should be noted that the larger the number of network nodes per cell the more complicated the scheduling procedure would be for a close-to-optimal resource allocation. [0057] In some embodiments, CSI feedback may be restricted under joint transmission to downlink control information (“DCI”) triggered aperiodic CSI feedback with CSI reporting configurations corresponding to all transmission and/or interference hypotheses being configured by the network. In such embodiments, there may be significant CSI feedback overhead corresponding to aperiodic CSI reporting on a physical uplink shared channel (“PUSCH”). [0058] In various embodiments, a UE may be configured for feeding back a CSI report that is flexible enough to correspond to multiple transmission hypotheses (e.g., a CSI report whose size is proportional to the size of K single-TRP CSI reports), wherein the CSI report corresponds to K’ transmission hypotheses, such that K< K’. For instance, a CSI report corresponding to K’=2^K- 1 transmission hypotheses can be represented via K PMI, K channel quality indicator (“CQI”). [0059] In certain embodiments, for high-precision channel and interference measurement, especially in TDD networks, sounding reference signals (“SRSs”) transmitted from a UE to a network may help provide a better characterization of a DL CSI based on UL and/or DL channel reciprocity. For instance, SRS may be used to estimate per-band intra-cell interference within a cell while CSI reference signal (“RS”) (“CSI-RS”) may be used to estimate the inter-cell interference within the cell. [0060] In some embodiments, there may be different DL NR codebook types. In various embodiments, there may be an NR Type-II codebook. [0061] In certain embodiments, assume a gNB is equipped with a two-dimensional (“2D”) antenna array with N1, N2 antenna ports per polarization placed horizontally and vertically and communication occurs over N₃ PMI sub-bands. A PMI subband includes a set of resource blocks, each resource block including a set of subcarriers. In such case, 2N₁N₂ CSI-RS ports may be used to enable DL channel estimation with high resolution for NR Type-II codebook. To reduce UL feedback overhead, a discrete Fourier transform (“DFT”)-based CSI compression of the spatial domain is applied to L dimensions per polarization, where L<N₁N₂. In the sequel, the indices of the 2L dimensions are referred as spatial domain (“SD”) basis indices. The magnitude and phase values of the linear combination coefficients for each sub-band are fed back to the gNB as part of the CSI report. [0062] The 2N₁N₂xN3 codebook per layer takes on the form W = W₁W₂ , where W1 is a 2N₁N₂x2L block-diagonal matrix (L<N₁N₂) with two identical diagonal blocks, i.e., W₁ = , and B is an N₁N₂xL matrix with columns drawn from a 2D oversampled DFT matrix, as

follows:

, where the superscript ^T denotes a matrix transposition operation. It should be noted that O₁, O₂ oversampling factors are assumed for the 2D DFT matrix from which matrix B is drawn. Further W1 is common across all layers. W₂ is a 2Lx N₃ matrix, where the i^th column corresponds to the linear combination coefficients of the 2L beams in the i^th sub-band. Only the indices of the L selected columns of B are reported, along with the oversampling index taking on O1O2 values. Moreover, W2 are independent for different layers. [0068] In more detail, NR Type-II codebook may be as follows: for 4 antenna ports {3000, 3001, …, 3003}, 8 antenna ports {3000, 3001, …, 3007}, 12 antenna ports {3000, 3001, …, 3011}, 16 antenna ports {3000, 3001, …, 3015}, 24 antenna ports {3000, 3001, …, 3023}, and 32 antenna ports {3000, 3001, …, 3031}, and the UE configured with higher layer parameter codebookType set to 'typeII'. The values of N1 and N2 are configured with the higher layer parameter n1-n2- codebookSubsetRestriction. The supported configurations of (N₁, N₂) for a given number of CSI- RS ports and the corresponding values of (O1, O2) may be given in Table 1. The number of CSI- RS ports, P_CSI-RS, is 2N₁N₂. [0069] The value of L is configured with the higher layer parameter numberOfBeams, where L=2 when P_CSI-RS=4 and L∈{2,3,4} when P_CSI-RS>4. The value of N_PSK is configured with the higher layer parameter phaseAlphabetSize, where NPSK ∈{4,8}. The UE is configured with the higher layer parameter subbandAmplitude set to 'true' or 'false'. The UE shall not report RI > 2. [0070] When v ≤ 2, where v is the associated RI value, each PMI value corresponds to the codebook indices i1 and i2 where: [0071]

[0072] The L vectors combined by the codebook are identified by the indices i_1,1 and i_1,2, where:

and

n [0073] Let n

and

, where the values of C(x,y) are given. Then the elements of n₁ and n₂ are found fromi_1,2 using the algorithm: s-1=0 for i=0,…., L-1. [0074] The largest may be such that

, , , , and

, [0075] When n₁ and n₂ are known,i_1,2 is found using: n⁽ⁱ⁾ = N₁n₂ ⁽ⁱ⁾+n₁ ⁽ⁱ⁾ where the indices i=0,1,…, L-1 are assigned such that n⁽ⁱ⁾ increases as i increases.

, where C(x,y) is given. If N₂=1, q₂=0 and

and q2 is not reported. When (N₁, N₂)=(2,1), n₁=[0,1] and n₂=[0,0], and i_1,2 is not reported. When (N₁, N₂)=(4,1) and L=4, n₁=[0,1,2,3] and n₂=[0,0,0,0], and i_1,2 is not reported. When (N₁, N₂)=(2,2) and L=4, n₁=[0,1,0,1] and n₂=[0,0,1,1], and i_1,2 is not reported. Table 1 may provide coefficients for various embodiments found herein. Table 1: Combinatorial Coefficients C(x,y)

[0077] The strongest coefficient on layer l=1,…,v is identified by i_1,3,l ∈{0,1,…,2L-1}. The i amplitude coefficient indicators i_1,4,l and i_2,2,l are:

for l=1,…,v. The mapping from 8 to the amplitude coefficient ^{^^^}

is given in Table 2 and the mapping from 8_^,% to the amplitude coefficient

_, is given in Table 3. The amplitude coefficients are represented

for l=1,…,v. Table 2: Mapping of elements of

Table 3: Mapping of elements of

[0078] The phase coefficient indicators are:

_{for l=1,…,v.} [0079] The amplitude and phase coefficient indicators are reported as follows. The indicators , and , and

B are not

reported for l=1,…,v. The remaining 2L-1 elements of i1,4,l (l=1,…,v) are reported, where

,

. Let Ml (l=1,…,v) be the number of elements of i1,4,l that satisfy

_. [0080] The remaining 2L-1 elements of i_2,1,l and i_2,2,l (l=1,…,v) are reported as follows. When subbandAmplitude is set to 'false', - and

is not

reported for l=1,…,v, for l=1,…,v, the elements of i_2,1,l corresponding to the coefficients that satisfy , i≠i1,3,l, as determined by the reported elements of i_1,4,l, are reported, where

and the remaining 2L-M_l elements of i_2,1,l are not reported and are set to c_l,i=0.

When subbandAmplitude is set to 'true', for l=1,…,v, the elements of i_2,2,l and i_2,1,l corresponding to the min

strongest coefficients (excluding the strongest coefficient indicated by i_1,3,l), as determined by the corresponding reported elements of i_1,4,l, are reported, where

and c { }. The values of K⁽²⁾ are given in Table 4. The remaining 2L- min(M_l, K⁽²⁾)

elements of i_2,2,l are not reported and are set to The elements of i_2,1,l corresponding to the

weakest non-zero coefficients are reported, where

The remaining 2L-Ml elements of i_2,1,l are not reported and are set to cl,i=0. [0081] When two elements, 8 of the reported elements of i_1,4,l are identical

, then element min(x,y) is prioritized to be included in the set of the

strongest coefficients for i_2,1,l and i_2,2,l (l=1,…,v) reporting. Table 4: Full resolution subband coefficients when subbandAmplitude is set to 'true'

[0082] The codebooks for 1-2 layers are given in Table 5, where the indices

are given by:

. For i=0,1,…,L-1, and the quantities

and

are given by: [0083]

Table 5: Codebook for 1-layer and 2-layer CSI reporting using antenna ports 3000 to 2999+PCSI‑RS

[0084] When the UE is configured with higher layer parameter codebookType set to 'typeII', the bitmap parameter typeII-RI‑Restriction forms the bit sequence r1, r0 where r0 is the LSB and r1 is the most significant bit (“MSB”). When ri is zero, i∈{0,1}, PMI and RI reporting are not allowed to correspond to any precoder associated with v=i+1 layers. The bitmap parameter n1-n2‑codebookSubsetRestriction forms the bit sequence B=B1B2 where bit sequences B1, and B2 are concatenated to form B. To define B1 and B2, first define the O1O2 vector groups G(r1,r2) as: [0085] [0086] for

. [0087] The UE shall be configured with restrictions for 4 vector groups indicated by (r1(k),r2(k)) for k=0,1,2,3 and identified by the group indices:

[0088] For k=0,1,…,3, where the indices are assigned such that g(k) increases as k increases. The remaining vector groups are not restricted. If N2=1, g(k)=k for k=0,1,…,3, and B1 is empty. If N2>1, B1=b1(10)…b1(0) is the binary representation of the integer β1 where b1(10) is the MSB and b1(0) is the least significant bit (“LSB”). β1 is found using:

, where C(x,y) is defined in Table 1. The group indices g(k) and indicators (r1(k) ,r2(k)) for k=0,1,2,3 may be found from β1 using the algorithm:

for k=0,…,3. [0089] Find the largest

such that

,

, , , , and

. [0090] The bit sequence B2=B2(0)B2(1)B2(2)B2(3) is the concatenation of the bit sequences B2(k) for k=0,1,…,3, corresponding to the group indices g(k). The bit sequence B2(k) is defined as:

Bits J

indicate the maximum allowed amplitude coefficient pl,i(1) for the vector in group g(k) indexed by x1,x2, where the maximum amplitude coefficients are given in Table 6. A UE that does not report parameter amplitudeSubsetRestriction = 'supported' in its capability signaling is not expected to be configured with .

Table 6: Maximum allowed amplitude coefficients for restricted vectors

[0091] In some embodiments, there may be an NR Type-II port selection codebook. For Type-II port selection codebook, only K (where K ≤ 2N1N2) beamformed CSI-RS ports are utilized in DL transmission to reduce complexity. The KxN3 codebook matrix per layer takes on the form:

[0092] Here, W2 follow the same structure as an NR Type-II codebook, and are layer s^{pecific. is a Kx2L block-diagonal matrix with two identical diagonal blocks, i.e.,}

a_{nd matrix whose columns are standard unit vectors, as follows:}

,^where

i_{s a standard unit vector with a 1 at the ith location. Here dPS is a radio resource control} (“RRC”) parameter which takes on the values {1,2,3,4} under the condition dPS ≤ min(K/2, L), whereas mPS takes on the values and is reported as part of the UL CSI feedback

overhead. W1 is common across all layers. [0094] For K=16, L=4 and dPS =1, the 8 possible realizations of E corresponding to mPS = {0,1,…,7} are as follows:

[0096] When dPS =2, the 4 possible realizations of E corresponding to mPS ={0,1,2,3} are as follows:

[0098] When dPS =3, the 3 possible realizations of E corresponding of mPS ={0,1,2} are as follows:

[0100] When dPS =4, the 2 possible realizations of E corresponding of mPS ={0,1} are as follows:

[0102] In various embodiments, mPS parametrizes the location of the first 1 in the first column of E, whereas dPS represents the row shift corresponding to different values of mPS. [0103] In more detail, the specification for the NR Type-II port selection codebook is as follows. For 4 antenna ports {3000, 3001, …, 3003}, 8 antenna ports {3000, 3001, …, 3007}, 12 antenna ports {3000, 3001, …, 3011}, 16 antenna ports {3000, 3001, …, 3015}, 24 antenna ports {3000, 3001, …, 3023}, and 32 antenna ports {3000, 3001, …, 3031}, and the UE configured with higher layer parameter codebookType set to 'typeII-PortSelection'. The number of CSI-RS ports is given by P_CSI-RS ∈ {4,8,12,16,24,32}as configured by higher layer parameter nrofPorts. The value of L is configured with the higher layer parameter numberOfBeams , where L=2 when PCSI- RS=4 and L∈{2,3,4} when PCSI-RS>4. The value of d is configured with the higher layer parameter portSelectionSamplingSize, where d∈{1,2,3,4} and The value of NPSK is

configured with the higher layer parameter phaseAlphabetSize, where N_PSK∈{4,8}. The UE is configured with the higher layer parameter subbandAmplitude set to true or false. The UE shall not report RI > 2. [0104] The UE is also configured with the higher layer parameter typeII- PortSelectionRI‑Restriction. The bitmap parameter typeII-PortSelectionRI‑Restriction forms the bit sequence r1,r0 where r ₀ is the LSB and r1 is the MSB. When ri is zero, i∈{0,1}, PMI and RI reporting are not allowed to correspond to any precoder associated with v=i+1 layers. [0105] When v ≤ 2, where v is the associated RI value, each PMI value corresponds to the codebook indices i₁ and i₂ where: [0106]

. [0107] The L antenna ports per polarization are selected by the index i1,1, where . The strongest coefficient on layer l, l=1,…,v is identified by

i_1,3,l∈{0,1,…,2L-1}. The amplitude coefficient indicators i_1,4,l and i_2,2,l are: [0108] The mapping from

to the

amplitude coefficient pl,i⁽¹⁾ is given in Table 2 and the mapping from k_l,i ⁽²⁾ to the amplitude coefficient p_l,i ⁽²⁾ is given in Table 3. The amplitude coefficients are represented by: [0109] . The phase coefficient indicators are: [0110]

[0111] The amplitude and phase coefficient indicators are reported as follows. The indicators are not

reported for l=1,…,v. The remaining 2L-1 elements of i_1,4,l (l=1,…,v) are reported, where

be the number of elements of i_1,4,l that satisfy

[0112] The remaining 2L-1 elements of i_2,1,l and i_2,2,l (l=1,…,v) are reported as follows. When subbandAmplitude is set to 'false', 8^{^^^} ^_,% = 1 for _{l ^ 1, K , ^} , and i=0,1,…,2L-1. i_2,2,l is not reported for l=1,…,v. For l=1,…,v, the M_l-1 elements of i_2,1,l corresponding to the coefficients that satisfy 8

as determined by the reported elements of i_1,4,l, are reported, where c_l,i ∈ {0,1,…,N_PSK-1} and the remaining 2L-M_l elements of i_2,1,l are not reported and are set to c_l,i=0. [0113] When subbandAmplitude is set to 'true', for l=1,…,v, the elements of i_2,2,l and i_2,1,l corresponding to the strongest coefficients (excluding the strongest coefficient

indicated by i_1,3,l), as determined by the corresponding reported elements of i_1,4,l, are reported, where . The values of K⁽²⁾ are given in Table 4. The

remaining 2L- min(M_l,K⁽²⁾) elements of i_2,2,l are not reported and are set to 8^{^^^} ^_,% = 1. The elements of i_2,1,l corresponding to the M_l- min(M_l,K⁽²⁾) weakest non-zero coefficients are reported, where cl,i∈{0,1,2,3}. The remaining 2L-Ml elements of i_2,1,l are not reported and are set to cl,i=0. [0114] When two elements, of the reported elements of i_1,4,l are identical

, then element min(x,y) is prioritized to be included in the set of the 1

strongest coefficients for i_2,1,l and i_2,2,l (l=1,…,v) reporting. [0115] The codebooks for 1-2 layers are given in Table 7, where the quantity φl,i is given by: [0116]

[0117] And v_m is a P_CSI-RS/2-element column vector containing a value of 1 in element (m mod P_CSI-RS/2) and zeros elsewhere (where the first element is element 0).

Table 7: Codebook for 1-layer and 2-layer CSI reporting using antenna ports 3000 to 2999+PCSI‑RS

[0118] In various embodiments, there may be an NR Type-I codebook. NR Type-I codebook may be a baseline codebook for NR, with a variety of configurations. The most common utility of Type-I codebook is a special case of NR Type-II codebook with L=1 for RI=1,2, wherein a phase coupling value is reported for each sub-band, i.e., W₂ is 2xN₃, with the first row equal to [1, 1, …, 1] and the second row equal to

Under specific configurations, Φ₀ = Φ₁ …= Φ, i.e., wideband reporting. For RI > 2 different beams are used for each pair of layers. Obviously, NR Type-I codebook can be depicted as a low-resolution version of NR Type-II codebook with spatial beam selection per layer-pair and phase combining only. More details on NR Type-I codebook can be found in NR Type-II codebook. [0119] Assume the gNB is equipped with a 2D antenna array with N1, N2 antenna ports per polarization placed horizontally and vertically and communication occurs over N₃ PMI subbands. A PMI subband includes a set of resource blocks, each resource block consisting of a set of subcarriers. In such case, 2N₁N₂N₃ CSI-RS ports are utilized to enable DL channel estimation with high resolution for NR Type-II codebook. To reduce the UL feedback overhead, a DFT-based CSI compression of the spatial domain is applied to L dimensions per polarization, where L<N₁N₂. Similarly, additional compression in the frequency domain is applied, where each beam of the frequency-domain precoding vectors is transformed using an inverse DFT matrix to the delay domain, and the magnitude and phase values of a subset of the delay-domain coefficients are selected and fed back to the gNB as part of the CSI report. The 2N₁N₂xN3 codebook per layer takes on the form: ^ where W₁ is a 2N₁N₂x2L block-diagonal matrix (L<N₁N₂) with two

identical diagonal blocks, i.e., and B is an N₁N₂xL matrix with columns drawn

from a 2D oversampled DFT matrix, as follows: where the supe ^T

rscript denotes a matrix transposition operation. Moreover, O₁, O₂ oversampling factors are assumed for the 2D DFT matrix from which matrix B is drawn. Further, W1 is common across all layers. Wf is an N₃xM matrix (M<N₃) with columns selected from a critically-sampled size-N₃ DFT matrix, as follows:

[0127] Only the indices of the L selected columns of B are reported, along with the oversampling index taking on O₁O₂ values. Similarly, for W_F, only the indices of the M selected columns out of the predefined size-N3 DFT matrix are reported. In the sequel the indices of the M dimensions are referred as the selected frequency domain (“FD”) basis indices. Hence, L, M represent the equivalent spatial and frequency dimensions after compression, respectively. Finally, the 2LxM matrix

represents the linear combination coefficients (“LCCs”) of the spatial and frequency DFT-basis vectors. Both

W_ƒ are selected independent for different layers. Magnitude and phase values of an approximately β fraction of the 2LM available coefficients are reported to the gNB (β<1) as part of the CSI report. Coefficients with zero magnitude are indicated via a per-layer bitmap. Since all coefficients reported within a layer are normalized with respect to the coefficient with the largest magnitude (strongest coefficient), the relative value of that coefficient is set to unity, and no magnitude or phase information is explicitly reported for this coefficient. Only an indication of the index of the strongest coefficient per layer is reported. Hence, for a single-layer transmission, magnitude and phase values of a maximum of

coefficients (e.g., along with the indices of selected L, M DFT vectors) are reported per layer, leading to significant reduction in CSI report size, compared with reporting 2N₁N₂xN₃ -1 coefficients’ information. [0128] In certain embodiments, an NR Type-II codebook may be as follows. For 4 antenna ports {3000, 3001, …, 3003}, 8 antenna ports {3000, 3001, …, 3007}, 12 antenna ports {3000, 3001, …, 3011}, 16 antenna ports {3000, 3001, …, 3015}, 24 antenna ports {3000, 3001, …, 3023}, and 32 antenna ports {3000, 3001, …, 3031}, and UE configured with higher layer parameter codebookType set to ' typeII-r16'. [0129] The values of ,_^ and ,_^ are configured with the higher layer parameter n1-n2- codebookSubsetRestriction-r16. The supported configurations of (N₁, N₂) for a given number of CSI-RS ports and the corresponding values of (O₁, O₂) are given in Table 2. The number of CSI- RS ports, P_CSI-RS, is 2N₁N₂ The values of 3 , β

are determined by the higher layer parameter paramCombination-r16, where the mapping is given in Table 8. [0130] The UE is not expected to be configured with paramCombination-r16 equal to: 1) 3, 4, 5, 6, 7, or 8 when P_CSI-RS = 4; 2) 7 or 8 when P_CSI-RS < 32; 3) 7 or 8 when higher layer parameter typeII-RI-Restriction-r16 is configured with r_i = 1 for any 0 > 1; and 4) 7 or 8 when R = 2. [0131] The parameter ^ is configured with the higher-layer parameter numberOfPMISubbandsPerCQISubband-r16. This parameter controls the total number of precoding matrices ,_~ indicated by the PMI as a function of the number of configured subbands in csi-ReportingBand, the subband size configured by the higher-level parameter subbandSize and of the total number of physical resource blocks (“PRBs”) in the bandwidth part according to a table, as follows. When R = 1: one precoding matrix is indicated by the PMI for each subband in csi-ReportingBand. When R = 2: for each subband in csi-ReportingBand that is not the first or last subband of a BWP, two precoding matrices are indicated by the PMI: the first precoding matrix corresponds to the first

PRBs of the subband and the second precoding matrix corresponds to the last

PRBs of the subband. For each subband in csi-ReportingBand that is the first or last subband of a BWP, iIf one precoding matrix is indicated by

the PMI corresponding to the first subband. If two precoding

matrices are indicated by the PMI corresponding to the first subband: the first precoding matrix corresponds to the first PRBs of the first subband and the second

precoding matrix corresponds to the last PRBs of the first subband. If

one precoding matrix is indicated by the PMI corresponding to the

last subband. If two precoding matrices are

indicated by the PMI corresponding to the last subband: the first precoding matrix corresponds to the first

^{PRBs of the last subband and the second precoding matrix corresponds to the last} P_{RBs of the last subband.}

Table 8: Codebook parameter configurations for L, β and p_v

[0132] The UE shall report the rank indicator (“RI”) value ^ according to the configured higher layer parameter typeII-RI-Restriction-r16. The UE shall not report

[0133] The PMI value corresponds to the codebook indices of d where:

[^0134] The precoding matrices indicated by the PMI are determined from

vectors^. 3 vectors, , are indentified by the indices ) ) ' ' , indicated by

i_1,1 , i_1,2 , where the values of C(x, y) are given in Table 11. vectors,

are identified by (f ) and

' which are indicated by means of the indices 0 (f 19)

[0136] The amplitude coefficient indicators

,

[0137] The phase coefficient indicator

[0138] Let

. The bitmap whose nonzero bits identify which coefficients in i_2,4,l and i_2,5,l are reported, is indicated by

^such that

^is the number of nonzero coefficients for layer is the total

number of nonzero coefficients.

[0139] The indices of i_2,4,l i_2,5,l and i_1,7,l are associated to the

codebook indices in . The mapping from to the amplitude coefficient is given in Table 9 and the mapping

from to the amplitude coefficient is given in Table 10. The amplitude coefficients are

represented by

1,

[0140] Let be the index of

be the

index of which identify the strongest coefficient of layer I, i.e., the element

for I = 1, ... , v . The codebook indices of are remapped with respect to

. such that after remapping. The index f is remapped with

respect to , such that the index of the strongest coefficient is f

after remapping. The indices of i_2,4,l i_2,5,l and i_1,7,l indicate amplitude coefficients, phase coefficients and bitmap after remapping.

[0141] The strongest coefficient of layer I is identified by

which is obtained as follows:

Table 9: Mapping of elements of

[^{0142] The amplitude and phase coefficient indicators are reported as follows:}

a_{nd . The indicators and are not}

reported for

[0143] The indicator is reported for

, , The

indicators

for which are reported. The

indicators B for which

are reported. The remaining indicators are not

reported. The remaining

indicators B are not reported.

Table 10: Mapping of elements of

[0144] The elements of n₁ and n₂ are found from i_1,2 using the algorithm described in 5.2.2.2.3, where the values of C(x, y) are given in Table 11. For N₃ > 19, M_initial is identified by i_1,5. For all values of ,, , , , the nonzero elements of

identified by

, are found from

, for

, , and from

1 for , ( )

using Cx, y as defined in Table 11 and the algorithm:

Å

[0145] Find the largest

in Table 11 such that: i_1,6,l −

, end if, end if.

Table 11: Combinatorial coefficients C(x, y)

[0146] When n_3,l and M_initial are known,

are found as follows. If

and is not reported. If

, for

, , , and is not reported. If ^

where C(x, y) is given in Table 11 and where the indices

are assigned such that

increases as ƒ increases. If

, 19 , M_initial is indicated by i_1,5 , which is reported and given by:

.

[0147] Only the nonzero indices

where

are reported, where the indices are assigned such that

increases as ƒ increases. Let then

, where C(x, y) is given in Table 11.

[0148] The codebooks for 1-4 layers are given in Table 12, where

for

are obtained, and the quantities Î d are given by:

where

, is the index

associated with the precoding matrix,

$ {1, … , } , and with

Table 12: Codebook for 1-layer.2-layer, 3-layer and 4-layer CSI reporting using antenna ports 3000 to 2999+PCSI-RS

[0149] For coefficients with 8 amplitude and phase are set to zero, i

and . The bitmap parameter typeII-RI-Restriction-r16 forms the bit sequence

where is the LSB and

is the MSB. When

^ is zero, 0 ∈ ^{0,1, … ,3^}, PMI and RI reporting are not allowed to correspond to any precoder associated with layers.

[0150] The bitmap parameter n1-n2-codebookSubsetRestriction-r16 forms the bit sequence B = B1B2 and configures the vector group indices

. Bits indicate the maximum allowed average amplitude,

of the coefficients associated with the vector in group indexed

b where the maximum amplitudes are given in Table 13 and the average coefficient amplitude is restricted as follows: a^nd

9 = 0,1. A UE that does not report the parameter amplitudeSubsetRestriction='supported' in its capability signaling is not expected to be configured with or

1_0. Table 13: Maximum allowed average coefficient amplitudes for restricted vectors

[0152] In some embodiments, there may be an NR Type-II port selection codebook. [0153] For Type-II port selection codebook, only K (where K ≤ 2N1N2) beamformed CSI- RS ports are utilized in DL transmission to reduce complexity. The KxN3 codebook matrix per layer takes on the form: Here, and W3 follow the same structure as a

conventional NR Type-II codebook, where both are layer specific. The matrix

is a Kx2L block-diagonal matrix with the same structure as that in an NR Type-II port selection codebook. [0154] In more detail, NR Type-II port selection codebook is as follows. For 4 antenna ports {3000, 3001, …, 3003}, 8 antenna ports {3000, 3001, …, 3007}, 12 antenna ports {3000, 3001, …, 3011}, 16 antenna ports {3000, 3001, …, 3015}, 24 antenna ports {3000, 3001, …, 3023}, and 32 antenna ports {3000, 3001, …, 3031}, and the UE configured with higher layer parameter codebookType set to ' typeII-PortSelection-r16 '. The number of CSI-RS ports is configured. The value of e is configured with the higher layer parameter portSelectionSamplingSize-r16, where e ∈ {1,2,3,4} and e ≤ 3. The values

d are configured, where the supported configurations are given in Table 14. Table 14: Codebook parameter configurations for ^, é and >_^

[0155] The UE may report the RI value according to the configured higher layer p^{arameter typeII-PortSelectionRI-Restriction-r16. The UE may not report}

^{The values of} R_{are configured. The UE is also configured with the higher layer bitmap parameter typeII-} PortSelectionRI-Restriction-r16, which forms the bit sequence

where is the LSB

and is the MSB. When

is zero,

PMI and RI reporting are not allowed to correspond to any precoder associated with layers. [0156] The PMI value corresponds to the codebook indices i₁ and i₂ where:

[0157] The 23 antenna ports are selected by the index i_1,1. Parameters

(for N₃ > 19) and K₀ may be defined. For layer

, the strongest coefficient i_1,8,l , the amplitude coefficient indicators i_2,3,l and i_2,4,l, the phase coefficient indicator i_2,5,l and the bitmap indicator i_1,7,l are defined and indicated, where the mapping from to the amplitude coefficient

i_{s given in Table 9 and the mapping from to the amplitude coefficien is given in}

Table 10. [0158] The number of nonzero coefficients for layer

and the total number of nonzero coefficients · are defined. The amplitude coefficients

9 are represented. The amplitude and phase coefficient indicators are reported. Codebook indicators are found.

[0159] The codebooks for 1-4 layers are given in Table 15, where ^

is a

element column vector containing a value of 1 in element

and zeros elsewhere (where the first element is element 0), and the quantities are defined.

Table 15: Codebook for 1-layer.2-layer, 3-layer and 4-layer CSI reporting using antenna ports 3000 to 2999+PCSI-RS

[0160] For coefficients with amplitude and phase are set to zero,

Î

[0161] In certain embodiments, there may be UL NR transmission. Two transmission modes may exist for precoded PUSCH transmission: codebook-based transmission and non- codebook-based transmission. A summary describing of both modes is provided herein. [0162] In some embodiments, there may be codebook-based UL transmission. For codebook based transmission, PUSCH can be scheduled by DCI format 0_0, DCI format 0_1, DCI format 0_2 or semi-statically configured to operate. If this PUSCH is scheduled by DCI format 0_1, DCI format 0_2, or semi-statically configured to operate, the UE determines its PUSCH transmission precoder based on scheduling request indicator (“SRI”), transmit precoder matrix indicator (“TPMI”) and the transmission rank, where the SRI, TPMI and the transmission rank are given by DCI fields of SRS resource indicator and Precoding information and number of layers for DCI format 0_1 and 0_2 or given by srs-ResourceIndicator and precodingAndNumberOfLayers. The SRS-ResourceSet(s) applicable for PUSCH scheduled by DCI format 0_1 and DCI format 0_2 are defined by the entries of the higher layer parameter srs- ResourceSetToAddModList and srs-ResourceSetToAddModListForDCI-Format0-2-r16 in SRS- config, respectively. The TPMI is used to indicate the precoder to be applied over the layers {0…ν- 1} and that corresponds to the SRS resource selected by the SRI when multiple SRS resources are configured, or if a single SRS resource is configured TPMI is used to indicate the precoder to be applied over the layers {0…ν-1} and that corresponds to the SRS resource. The transmission precoder is selected from the uplink codebook that has a number of antenna ports equal to higher layer parameter nrofSRS-Ports in SRS-Config. When the UE is configured with the higher layer parameter txConfig set to 'codebook', the UE is configured with at least one SRS resource. The indicated SRI in slot n is associated with the most recent transmission of SRS resource identified by the SRI, where the SRS resource is prior to the physical downlink control channel (“PDCCH”) carrying the SRI. [0163] In various embodiments, for codebook based transmission, the UE determines its codebook subsets based on TPMI and upon the reception of higher layer parameter codebookSubset in pusch-Config for PUSCH associated with DCI format 0_1 and codebookSubsetForDCI-Format0-2-r16 in pusch-Config for PUSCH associated with DCI format 0_2 which may be configured with 'fullyAndPartialAndNonCoherent', or 'partialAndNonCoherent', or 'nonCoherent' depending on the UE capability. When higher layer parameter ul-FullPowerTransmission-r16 is set to 'fullpowerMode2' and the higher layer parameter codebookSubset or the higher layer parameter codebookSubsetForDCI-Format0-2-r16 is set to 'partialAndNonCoherent', and when the SRS-resourceSet with usage set to "codebook" includes at least one SRS resource with 4 ports and one SRS resource with 2 ports, the codebookSubset associated with the 2-port SRS resource is 'nonCoherent'. The maximum transmission rank may be configured by the higher layer parameter maxRank in pusch-Config for PUSCH scheduled with DCI format 0_1 and maxRank-ForDCIFormat0_2 for PUSCH scheduled with DCI format 0_2. [0164] In certain embodiments, a UE reporting its UE capability of 'partialAndNonCoherent' transmission may not expect to be configured by either codebookSubset or codebookSubsetForDCI-Format0-2-r16 with 'fullyAndPartialAndNonCoherent'. A UE reporting its UE capability of 'nonCoherent' transmission may not expect to be configured by either codebookSubset or codebookSubsetForDCI-Format0-2-r16 with 'fullyAndPartialAndNonCoherent' or with 'partialAndNonCoherent'. [0165] In some embodiments, a UE may not expect to be configured with the higher layer parameter codebookSubset or the higher layer parameter codebookSubsetForDCI-Format0-2-r16 set to 'partialAndNonCoherent' when higher layer parameter nrofSRS-Ports in an SRS- ResourceSet with usage set to 'codebook' indicates that the maximum number of the configured SRS antenna ports in the SRS-ResourceSet is two. [0166] For codebook based transmission, the UE may be configured with a single SRS- ResourceSet with usage set to 'codebook' and only one SRS resource can be indicated based on the SRI from within the SRS resource set. Except when higher layer parameter ul- FullPowerTransmission-r16 is set to 'fullpowerMode2', the maximum number of configured SRS resources for codebook based transmission is 2. If aperiodic SRS is configured for a UE, the SRS request field in DCI triggers the transmission of aperiodic SRS resources. [0167] In various embodiments, a UE may not expect to be configured with higher layer parameter ul-FullPowerTransmission-r16 set to 'fullpowerMode1' and codebookSubset or codebookSubsetForDCI-Format0-2-r16 set to 'fullAndPartialAndNonCoherent' simultaneously. The UE may transmit PUSCH using the same antenna port(s) as the SRS port(s) in the SRS resource indicated by the DCI format 0_1 or 0_2 or by configuredGrantConfig. The DM-RS antenna ports

may be determined according to the ordering of DM-RS port(s). [0168] Except when higher layer parameter ul-FullPowerTransmission-r16 is set to 'fullpowerMode2', when multiple SRS resources are configured by SRS-ResourceSet with usage set to 'codebook', the UE may expect that higher layer parameters nrofSRS-Ports in SRS-Resource in SRS-ResourceSet may be configured with the same value for all these SRS resources. [0169] In certain embodiments, when higher layer parameter ul-FullPowerTransmission- r16 is set to 'fullpowerMode2', the UE may be configured with one SRS resource or multiple SRS resources with same or different number of SRS ports within an SRS resource set with usage set to 'codebook'. Up to 2 different spatial relations may be configured for all SRS resources in the SRS resource set with usage set to 'codebook' when multiple SRS resources are configured in the SRS resource set. Subject to UE capability, a maximum of 2 or 4 SRS resources are supported in an SRS resource set with usage set to 'codebook'. [0170] In some embodiments, there may be a DCI format 0_1. There may be precoding information and a number of layers with a number of bits determined by the following: 1) 0 bits if the higher layer parameter txConfig = nonCodeBook; 2) 0 bits for 1 antenna port and if the higher layer parameter txConfig = codebook; 3) 4, 5, or 6 bits for 4 antenna ports, if txConfig = codebook, ul-FullPowerTransmission-r16 is not configured or configured to fullpowerMode2 or configured to fullpower, and according to whether transform precoder is enabled or disabled, and the values of higher layer parameters maxRank, and codebookSubset; 4) 4 or 5 bits for 4 antenna ports, if txConfig = codebook, ul-FullPowerTransmission-r16 = fullpowerMode1, maxRank=2, transform precoder is disabled, and according to the values of higher layer parameter codebookSubset; 5) 4 or 6 bits for 4 antenna ports, if txConfig = codebook, ul-FullPowerTransmission-r16 = fullpowerMode1, maxRank=3 or 4, transform precoder is disabled, and according to the values of higher layer parameter codebookSubset; 6) 2, 4, or 5 bits for 4 antenna ports, if txConfig = codebook, ul-FullPowerTransmission-r16 is not configured or configured to fullpowerMode2 or configured to fullpower, and according to whether transform precoder is enabled or disabled, and the values of higher layer parameters maxRank, and codebookSubset; 7) 3 or 4 bits for 4 antenna ports, if txConfig = codebook, ul-FullPowerTransmission-r16 = fullpowerMode1, maxRank=1, and according to whether transform precoder is enabled or disabled, and the values of higher layer parameter codebookSubset; 8) 2 or 4 bits for 2 antenna ports, if txConfig = codebook, ul- FullPowerTransmission-r16 is not configured or configured to fullpowerMode2 or configured to fullpower, and according to whether transform precoder is enabled or disabled, and the values of higher layer parameters maxRank and codebookSubset; 9) 2 bits for 2 antenna ports, if txConfig = codebook, ul-FullPowerTransmission-r16 = fullpowerMode1, transform precoder is disabled, maxRank=2, and codebookSubset=nonCoherent; 10) 1 or 3 bits for 2 antenna ports, if txConfig = codebook, ul-FullPowerTransmission-r16 is not configured or configured to fullpowerMode2 or configured to fullpower, and according to whether transform precoder is enabled or disabled, and the values of higher layer parameters maxRank and codebookSubset; and 11) 2 bits for 2 antenna ports, if txConfig = codebook, ul-FullPowerTransmission-r16 = fullpowerMode1, maxRank=1, and according to whether transform precoder is enabled or disabled, and the values of higher layer parameter codebookSubset. [0171] For the higher layer parameter txConfig=codebook, if ul-FullPowerTransmission- r16 is configured to fullpowerMode2, maxRank is configured to be larger than 2, and at least one SRS resource with 4 antenna ports is configured in an SRS resource set with usage set to 'codebook' and an SRS resource with 2 antenna ports is indicated via SRI in the same SRS resource set. For the higher layer parameter txConfig = codebook, if different SRS resources with different number of antenna ports are configured, the bitwidth is determined according to the maximum number of ports in an SRS resource among the configured SRS resources in an SRS resource set with usage set to 'codebook'. If the number of ports for a configured SRS resource in the set is less than the maximum number of ports in an SRS resource among the configured SRS resources, a number of most significant bits with value set to '0' are inserted to the field. [0172] In various embodiments, there may be a DCI format 0_2. There may be precoding information and a number of layers with a number of bits determined by the following: 1) 0 bits if the higher layer parameter txConfig = nonCodeBook; 2) 0 bits for 1 antenna port and if the higher layer parameter txConfig = codebook; 3) 4, 5, or 6 bits for 4 antenna ports, if txConfig = codebook, ul-FullPowerTransmission-r16 is not configured or configured to fullpowerMode2 or configured to fullpower, and according to whether transform precoder is enabled or disabled, and the values of higher layer parameters maxRank-ForDCIFormat0_2, and codebookSubset-ForDCIFormat0_2; 4) 4 or 5 bits for 4 antenna ports, if txConfig = codebook, ul-FullPowerTransmission-r16 =fullpowerMode1, the values of higher layer parameters maxRankForDCI-Format0-2=2, transform precoder is disabled, and according to the value of higher layer parameter codebookSubsetForDCI-Format0-2; 5) 4 or 6 bits for 4 antenna ports, if txConfig = codebook, ul- FullPowerTransmission-r16 =fullpowerMode1, the values of higher layer parameters maxRankForDCI-Format0-2=3 or 4, transform precoder is disabled, and according to the value of higher layer parameter codebookSubsetForDCI-Format0-2; 6) 2, 4, or 5 bits for 4 antenna ports, if txConfig = codebook, ul-FullPowerTransmission-r16 is not configured or configured to fullpowerMode2 or configured to fullpower, and according to whether transform precoder is enabled or disabled, and the values of higher layer parameters maxRank-ForDCIFormat0_2, and codebookSubset-ForDCIFormat0_2; 7) 3 or 4 bits for 4 antenna ports, if txConfig = codebook, ul- FullPowerTransmission-r16 =fullpowerMode1, maxRankForDCI-Format0-2=1, and according to whether transform precoder is enabled or disabled, and the value of higher layer parameter codebookSubsetForDCI-Format0-2; 8) 2 or 4 bits for 2 antenna ports, if txConfig = codebook, ul- FullPowerTransmission-r16 is not configured or configured to fullpowerMode2 or configured to fullpower, and according to whether transform precoder is enabled or disabled, and the values of higher layer parameters maxRank-ForDCIFormat0_2 and codebookSubset-ForDCIFormat0_2; 9) 2 bits for 2 antenna ports, if txConfig = codebook, ul-FullPowerTransmission-r16 =fullpowerMode1, transform precoder is disabled, the maxRankForDCI-Format0-2=2, and codebookSubsetForDCI-Format0-2=nonCoherent; 10) 1 or 3 bits for 2 antenna ports, if txConfig = codebook, ul-FullPowerTransmission-r16 is not configured or configured to fullpowerMode2 or configured to fullpower, and according to whether transform precoder is enabled or disabled, and the values of higher layer parameters maxRank-ForDCIFormat0_2 and codebookSubset- ForDCIFormat0_2; and 11) 2 bits for 2 antenna ports, if txConfig = codebook, ul- FullPowerTransmission-r16 =fullpowerMode1, maxRankForDCI-Format0-2=1, and according to whether transform precoder is enabled or disabled, and the value of higher layer parameter codebookSubsetForDCI-Format0-2. [0173] For the higher layer parameter txConfig=codebook, if ul-FullPowerTransmission- r16 is configured to fullpowerMode2, the values of higher layer parameters maxRankForDCI- Format0-2 is configured to be larger than 2, and at least one SRS resource with 4 antenna ports is configured in an SRS resource set with usage set to 'codebook' and an SRS resource with 2 antenna ports is indicated via SRI in the same SRS resource set. For the higher layer parameter txConfig = codebook, if different SRS resources with different number of antenna ports are configured, the bitwidth is determined according to the maximum number of ports in an SRS resource among the configured SRS resources in an SRS resource set with usage set to 'codebook'. If the number of ports for a configured SRS resource in the set is less than the maximum number of ports in an SRS resource among the configured SRS resources, a number of most significant bits with value set to '0' are inserted to the field. [0174] In various embodiments, there may be precoding. The block of vectors

may be precoded according to:

, where

, . The set of antenna ports

_{may be determined} according to a procedure. [0175] For non-codebook-based transmission, the precoding matrix W equals the identity matrix. For codebook-based transmission, the precoding matrix W is given by W = 1 for single- layer transmission on a single antenna port, otherwise by Tables 16 to 22 with the TPMI index obtained from the DCI scheduling the uplink transmission or the higher layer parameters according to a procedure. [^{0176] When the higher-layer parameter txConfig is not configured, the precoding matrix} ^_{= 1.} Table 16: Precoding matrix ^W for single-layer transmission using two antenna ports

Table 17: Precoding matrix ^W for single-layer transmission using four antenna ports with transform precoding enabled

Table 18: Precoding matrix ^W for single-layer transmission using four antenna ports with transform precoding disabled

Table 19: Precoding matrix ^W for two-layer transmission using two antenna ports with transform precoding disabled

Table 20: Precoding matrix ^W for two-layer transmission using four antenna ports with transform precoding disabled

Table 21: Precoding matrix ^W for three-layer transmission using four antenna ports with transform precoding disabled TPMI

Table 22: Precoding matrix ^W for four-layer transmission using four antenna ports with transform precoding disabled

[0177] In certain embodiments, there may be non-codebook-based UL transmission. For non-codebook based transmission, PUSCH can be scheduled by DCI format 0_0, DCI format 0_1, DCI format 0_2 or semi-statically configured to operate. If this PUSCH is scheduled by DCI format 0_1, DCI format 0_2, or semi-statically configured to operate, the UE can determine its PUSCH precoder and transmission rank based on the SRI when multiple SRS resources are configured, where the SRI is given by the SRS resource indicator in DCI for DCI format 0_1 and DCI format 0_2, or the SRI is given by srs-ResourceIndicator. The SRS-ResourceSet(s) applicable for PUSCH scheduled by DCI format 0_1 and DCI format 0_2 are defined by the entries of the higher layer parameter srs-ResourceSetToAddModList and srs- ResourceSetToAddModListForDCI-Format0-2-r16 in SRS-config, respectively. The UE shall use one or multiple SRS resources for SRS transmission, where, in a SRS resource set, the maximum number of SRS resources which can be configured to the UE for simultaneous transmission in the same symbol and the maximum number of SRS resources are UE capabilities. The SRS resources transmitted simultaneously occupy the same resource blocks (“RBs”). Only one SRS port for each SRS resource is configured. Only one SRS resource set can be configured with higher layer parameter usage in SRS-ResourceSet set to 'nonCodebook'. The maximum number of SRS resources that can be configured for non-codebook based uplink transmission is 4. The indicated SRI in slot n is associated with the most recent transmission of SRS resource(s) identified by the SRI, where the SRS transmission is prior to the PDCCH carrying the SRI. [0178] For non-codebook based transmission, the UE can calculate the precoder used for the transmission of SRS based on measurement of an associated non-zero power (“NZP”) CSI-RS resource. A UE can be configured with only one NZP CSI-RS resource for the SRS resource set with higher layer parameter usage in SRS-ResourceSet set to 'nonCodebook' if configured. The UE may perform one-to-one mapping from the indicated SRI(s) to the indicated DM-RS ports(s) and their corresponding PUSCH layers {0 … ν-1} given by DCI format 0_1 or by configuredGrantConfig in increasing order. [0179] The UE may transmit PUSCH using the same antenna ports as the SRS port(s) in the SRS resource(s) indicated by SRI(s) given by DCI format 0_1 or by configuredGrantConfig, where the SRS port in (i+1)-th SRS resource in the SRS resource set is indexed as

The DM-RS antenna ports

are determined according to the ordering of DM-RS port(s) given. [0180] For non-codebook based transmission, the UE does not expect to be configured with both spatialRelationInfo for SRS resource and associatedCSI-RS in SRS-ResourceSet for SRS resource set. For non-codebook based transmission, the UE can be scheduled with DCI format 0_1 when at least one SRS resource is configured in SRS-ResourceSet with usage set to 'nonCodebook'. [0181] In some embodiments, there may be a UE sounding procedure. In various embodiments, there may be an SRS configuration. The UE may be configured with one or more SRS resource sets as configured by the higher layer parameter SRS-ResourceSet, wherein each SRS resource set is associated with K≥1 SRS resources (higher layer parameter SRS-Resource), where the maximum value of K is indicated by UE capability. The SRS resource set applicability is configured by the higher layer parameter usage in SRS-ResourceSet. The higher-layer parameter SRS-Resource configures some SRS parameters, including the SRS resource configuration identity (srs-ResourceId), the number of SRS ports (nrofSRS-Ports) with default value of one, and the time-domain behaviour of SRS resource configuration (resourceType). [0182] The UE may be configured by the higher layer parameter resourceMapping in SRS- Resource with an SRS resource occupying Ns∈{1,2,4} adjacent symbols within the last 6 symbols of the slot, where all antenna ports of the SRS resources are mapped to each symbol of the resource. [0183] For a UE configured with one or more SRS resource configuration(s), and when the higher layer parameter resourceType in SRS-Resource is set to 'aperiodic': 1) the UE receives a configuration of SRS resource sets; 2 )the UE receives a downlink DCI, a group common DCI, or an uplink DCI based command where a codepoint of the DCI may trigger one or more SRS resource set(s) - for SRS in a resource set with usage set to 'codebook' or 'antennaSwitching', the minimal time interval between the last symbol of the PDCCH triggering the aperiodic SRS transmission and the first symbol of SRS resource is N2 - otherwise, the minimal time interval between the last symbol of the PDCCH triggering the aperiodic SRS transmission and the first symbol of SRS resource is N2 + 14 - the minimal time interval in units of OFDM symbols is counted based on the minimum subcarrier spacing between the PDCCH and the aperiodic SRS. [0184] If the UE is configured with the higher layer parameter spatialRelationInfo containing the identifier (“ID”) of a reference 'ssb-Index', the UE shall transmit the target SRS resource with the same spatial domain transmission filter used for the reception of the reference synchronization signal (“SS”) and/or physical broadcast channel (“PBCH”) (“SS/PBCH”) block, if the higher layer parameter spatialRelationInfo contains the ID of a reference 'csi-RS-Index', the UE shall transmit the target SRS resource with the same spatial domain transmission filter used for the reception of the reference periodic CSI-RS or of the reference semi-persistent CSI-RS, or of the latest reference aperiodic CSI-RS. If the higher layer parameter spatialRelationInfo contains the ID of a reference 'srs', the UE shall transmit the target SRS resource with the same spatial domain transmission filter used for the transmission of the reference periodic SRS or of the reference semi-persistent SRS or of the reference aperiodic SRS. The update command contains spatial relation assumptions provided by a list of references to reference signal IDs, one per element of the updated SRS resource set. Each ID in the list refers to a reference SS/PBCH block, NZP CSI-RS resource configured on serving cell indicated by Resource Serving Cell ID field in the update command if present, same serving cell as the SRS resource set otherwise, or SRS resource configured on serving cell and uplink bandwidth part indicated by Resource Serving Cell ID field and Resource BWP ID field in the update command if present, same serving cell and bandwidth part as the SRS resource set otherwise. [0185] When the UE is configured with the higher layer parameter usage in SRS- ResourceSet set to 'antennaSwitching', the UE may not expect to be configured with different spatial relations for SRS resources in the same SRS resource set. [0186] For physical uplink control channel (“PUCCH”) and SRS on the same carrier, a UE may not transmit SRS when semi-persistent and periodic SRS are configured in the same symbol(s) with PUCCH carrying only CSI report(s), or only L1-RSRP report(s), or only L1-SINR report(s). A UE may not transmit SRS when semi-persistent or periodic SRS is configured or aperiodic SRS is triggered to be transmitted in the same symbol(s) with PUCCH carrying hybrid automatic repeat request (“HARQ”) acknowledgement (“ACK”) (“HARQ-ACK”), link recovery request and/or SR. In the case that SRS is not transmitted due to overlap with PUCCH, only the SRS symbol(s) that overlap with PUCCH symbol(s) are dropped. PUCCH may not be transmitted when aperiodic SRS is triggered to be transmitted to overlap in the same symbol with PUCCH carrying semi-persistent/periodic CSI report(s) or semi-persistent/periodic L1-RSRP report(s) only, or only L1-SINR report(s). [0187] When the UE is configured with the higher layer parameter usage in SRS- ResourceSet set to 'antennaSwitching', and a guard period of Y symbols is configured, the UE shall use the same priority rules as defined above during the guard period as if SRS was configured. [0188] In certain embodiments, there may be a UE sounding procedure. When the UE is configured with the higher-layer parameter usage in SRS-ResourceSet set as 'antennaSwitching', the UE may be configured with one configuration depending on the indicated UE capability supportedSRS-TxPortSwitch, which takes on the values {'t1r2', 't1r1-t1r2', 't2r4', 't1r4', 't1r1-t1r2- t1r4', 't1r4-t2r4', 't1r1-t1r2-t2r2-t2r4', 't1r1-t1r2-t2r2-t1r4-t2r4', 't1r1', 't2r2', 't1r1-t2r2', 't4r4', 't1r1- t2r2-t4r4'}, wherein: 1) for 1T2R, up to two SRS resource sets configured with a different value for the higher layer parameter resourceType in SRS-ResourceSet set, where each set has two SRS resources transmitted in different symbols, each SRS resource in a given set consisting of a single SRS port, and the SRS port of the second resource in the set is associated with a different UE antenna port than the SRS port of the first resource in the same set; 2) for 2T4R, up to two SRS resource sets configured with a different value for the higher layer parameter resourceType in SRS-ResourceSet set, where each SRS resource set has two SRS resources transmitted in different symbols, each SRS resource in a given set consisting of two SRS ports, and the SRS port pair of the second resource is associated with a different UE antenna port pair than the SRS port pair of the first resource; 3) for 1T4R, zero or one SRS resource set configured with higher layer parameter resourceType in SRS-ResourceSet set to 'periodic' or 'semi-persistent' with four SRS resources transmitted in different symbols, each SRS resource in a given set consisting of a single SRS port, and the SRS port of each resource is associated with a different UE antenna port; 4) for 1T4R, zero or two SRS resource sets each configured with higher layer parameter resourceType in SRS- ResourceSet set to 'aperiodic' and with a total of four SRS resources transmitted in different symbols of two different slots, and where the SRS port of each SRS resource in the given two sets is associated with a different UE antenna port - the two sets are each configured with two SRS resources, or one set is configured with one SRS resource and the other set is configured with three SRS resources; and/or 5) for 1T=1R, or 2T=2R, or 4T=4R, up to two SRS resource sets each with one SRS resource, where the number of SRS ports for each resource is equal to 1, 2, or 4. [0189] In some embodiments, the UE is configured with a guard period of Y symbols, in which the UE does not transmit any other signal, in the case the SRS resources of a set are transmitted in the same slot. The guard period is in-between the SRS resources of the set. The value of Y is 2 when the OFDM sub-carrier spacing is 120 kHz, otherwise Y=1. For 1T2R, 1T4R or 2T4R, the UE may not expect to be configured or triggered with more than one SRS resource set with higher layer parameter usage set as 'antennaSwitching' in the same slot. For 1T=1R, 2T=2R or 4T=4R, the UE may not expect to be configured or triggered with more than one SRS resource set with higher layer parameter usage set as 'antennaSwitching' in the same symbol. [0190] In various embodiments, there may be codebook reporting. The codebook report is partitioned into two parts based on the priority of information reported. Each part is encoded separately (e.g., Part 1 has a possibly higher code rate). Described herein there may be parameters for NR Type-II codebook only. [0191] In some embodiments, a content of a CSI report may include: 1) Part 1: RI + CQI + Total number of coefficients; and 2) Part 2: SD basis indicator + FD basis indicator/layer + Bitmap/layer + Coefficient Amplitude info/layer + Coefficient Phase info/layer + Strongest coefficient indicator/layer. Furthermore, Part 2 CSI may be decomposed into sub-parts each with different priority (e.g., higher priority information listed first). Such partitioning is required to allow dynamic reporting size for codebook based on available resources in the uplink phase. Also Type-II codebook is based on aperiodic CSI reporting, and only reported in PUSCH via DCI triggering (e.g., one exception). Type-I codebook can be based on periodic CSI reporting (PUCCH) or semi-persistent CSI reporting (PUSCH or PUCCH) or aperiodic reporting (PUSCH). [0192] In various embodiments, there may be priority reporting for Part 2 CSI. Multiple (e.g., up to NRep) CSI reports may be transmitted, whose priority are shown in Table 23. Table 23: CSI Reports priority ordering

[0193] In various embodiments, a priority of the NRep CSI reports may be based on the following: 1) a CSI report corresponding to one CSI reporting configuration for one cell may have higher priority compared with another CSI report corresponding to one other CSI reporting configuration for the same cell; 2) CSI reports intended to one cell may have higher priority compared with other CSI reports intended to another cell; 3) CSI reports may have higher priority based on the CSI report content, e.g., CSI reports carrying L1-RSRP information have higher priority; and/or 4) CSI reports may have higher priority based on their type, e.g., whether the CSI report is aperiodic, semi-persistent or periodic, and whether the report is sent via PUSCH or PUCCH, may impact the priority of the CSI report. In light of that, CSI reports may be prioritized as follows, where CSI reports with lower IDs have higher priority:

where s: CSI reporting configuration index, and Ms:

Maximum number of CSI reporting configurations, c: Cell index, and Ncells: Number of serving cells, k: 0 for CSI reports carrying L1-RSRP or L1-SINR, 1 otherwise, y: 0 for aperiodic reports, 1 for semi-persistent reports on PUSCH, 2 for semi-persistent reports on PUCCH, 3 for periodic reports. [0194] In some embodiments, there may be UCI bit sequence generation. The bitwidth for RI, layer index (“LI”), CQI, and/or CSI-RS resource index (“CRI”) of codebookType=typeI- SinglePanel is provided in Table 24. Table 24: RI, LI, CQI, and CRI of Type-I single-panel codebook

Table 25: Mapping order of CSI fields of one CSI report with wideband PMI and wideband CQI

[0195] In Table 25, nRI, v and KsCSI-RS are the number of allowed rank indicator values, the value of the rank and the number of CSI-RS resources in the corresponding resource set, respectively. The values of the rank indicator field are mapped to allowed rank indicator values with increasing order, where '0' is mapped to the smallest allowed rank indicator value. Table 26: Mapping order of CSI Part 1 fields of a CSI report, with sub-band PMI or sub-band CQI

Table 27: Mapping order of wideband CSI Part 2 fields of a CSI report with sub-band PMI or sub-band CQI

Table 28 Mapping order of sub-band CSI Part 2 fields of a CSI report with sub-band PMI or sub- band CQI

[0196] Sub-bands for given CSI report n indicated by the higher layer parameter csi- ReportingBand are numbered continuously in the increasing order with the lowest subband of csi- ReportingBand as subband 0. Table 29: Mapping order of CSI Part 2 fields of a CSI report with typeII-r16 or typeII- PortSelection-r16’ codebook

[0197] The CSI report content in UCI, whether on PUCCH or PUSCH, is provided. The Rank Indicator (RI), if reported, has bitwidth of mi , where Nports, nRI

represent the number of antenna ports and the number of allowed rank indicator values, respectively. On the other hand, the CSI-RS Resource Indicator (CRI) and the Synchronization Signal Block Resource Indicator (SSBRI) each have bitwidths of

respectively, where is the number of CSI-RS resources in the corresponding resource set,

and is the configured number of SS/PBCH blocks in the corresponding resource set for reporting 'ssb-Index-RSRP'. The mapping order of CSI fields of one CSI report with wideband PMI and wideband CQI on PUCCH is depicted in Table 30. Table 30: Mapping order of CSI fields of one CSI report with wideband PMI and CQI on PUCCH

[0198] In a first set of embodiments, there may be an indication of a CJT codebook. Different embodiments for indication of CJT-based codebook are found herein. A setup with a combination of one or more of the embodiments herein is not precluded. [0199] In a first embodiment of the first set of embodiments, a UE configured with multi- panel codebook transmission may be configured with a CSI reporting setting CSI-ReportConfig that corresponds to an NZP CSI-RS resource set as a resource for channel measurement, and wherein the non-zero (“NZ”) CSI-RS resource set is further configured with a higher-layer parameter, e.g., n CSI-RS-resource-Groups, or n CSI-RS-port-Groups that configures the UE with CJT using multiple groups of NZP CSI-RS resources, or CSI-RS ports. Two examples of the ASN.1 code that correspond to such NZP-CSI-RS-ResourceSet IE are provided in Figure 4 and Figure 5. Specifically, Figure 4 illustrates one embodiment of an ASN.1 code for an NZP-CSI- RS-ResourceSet IE 400 with CJT indication including n CSI-RS-resource-Groups. Further, Figure 5 illustrates another embodiment of an ASN.1 code for NZP-CSI-RS-ResourceSet IE with CJT indication including n CSI-RS-port-Groups. [0200] In a second embodiment of the first set of embodiments, a UE configured with multi-TRP transmission may be configured with a CSI Reporting Setting CSI-ReportConfig that includes a higher-layer parameter which triggers the UE to report multiple PMI values, e.g., n PMI, in the CSI-ReportConfig Reporting Setting or any of its elements, e.g., codebookConfig. Examples of the ASN.1 code the correspond to the CSI-ReportConfig Reporting Setting IE are provided in Figure 6 and Figure 7, where the number of CSI Reports is triggered within the Reporting Setting or the codebook configuration, respectively. Specifically, Figure 6 illustrates one embodiment of ASN.1 code for CSI-ReportConfig Reporting Setting IE with CJT indication including nPMI. Further, Figure 7 illustrates another embodiment of ASN.1 code for CodebookConfig Codebook Configuration IE with CJT indication including n PMI. [0201] In a third embodiment of the first set of embodiments, a UE configured with multi- panel codebook feedback may be configured with a CSI Reporting Setting CSI-ReportConfig that configures an SRS resource set for interference measurement over coherent joint transmission, e.g., SRS-ForCJT. An example of the ASN.1 code the corresponds to the CSI-ReportConfig Reporting Setting IE is provided in Figure 8, wherein an SRS resource set indicator is configured within the CSI Reporting Setting. Specifically, Figure 8 illustrates one embodiment of ASN.1 code for CSI-ReportConfig Reporting Setting IE with CJT indication including SRS-ForCJT. [0202] In a fourth embodiment of the first set of embodiments, a UE configured with multi- panel codebook feedback may be configured with multiple TCI states corresponding to the multiple network nodes corresponding to joint transmission, and the multiple TCI states are indicated via a single TCI codepoint in a PDSCH-scheduling DCI. [0203] In a second set of embodiments, there may be a structure of a CJT codebook. Different embodiments that describe the structure of the CSI report under joint transmission are provided herein. According to some embodiments, a combination of one or more embodiments is not precluded. [0204] In a first embodiment of the second set of embodiments, a CSI report includes a same number of PMIs corresponding to the number of configured NZP CSI-RS resource groups and/or port groups within the CSI reporting setting. [0205] In a second embodiment of the second set of embodiments, a CSI report includes a same number of CQIs corresponding to the number of configured NZP CSI-RS resource groups and/or port groups within the CSI reporting setting. [0206] In a third embodiment of the second set of embodiments, a CSI report includes a single RI value corresponding to the configured NZP CSI-RS resource groups and/or port groups within the CSI reporting setting. In one example, all PMIs in the CSI report include a same number of layers, wherein the same number of layers is equivalent to the RI value. [0207] In a fourth embodiment of the second set of embodiments, sub-band CQI values corresponding to differential CQI values associated with a plurality of frequency sub-bands are encoded using a compression code, e.g., arithmetic coding. In one example, the number of encoded bits corresponding to the sub-band CQI values is less than or equal the number of bits corresponding to the sub-band CQI values before the encoding and/or after the decoding. [0208] In a fifth embodiment of the second set of embodiments, one or more signal-to- noise ratio (“SNR”) and/or signal-to-interference-and-noise ratio (“SINR”) value corresponding to the channel quality is reported in the CSI report. In a first example, an SNR and/or SINR value is reported for each sub-band. In a second example, an SNR and/or SINR value is reported that corresponds to multiple sub-bands. In a third example, an SNR and/or SINR value is reported that corresponds to all sub-bands within the bandwidth part. In a fourth example, sub-band SNR and/or SINR values corresponding to differential CQI values associated with a plurality of frequency sub- bands are encoded using a compression code, e.g., arithmetic coding. [0209] In a sixth embodiment of the second set of embodiments, the one or more SNR and/or SINR values correspond to channel quality computed based on channel measurement resource (“CMR”) and CSI interference management (“IM”) (“CSI-IM”) only. [0210] In a seventh embodiment of the second set of embodiments, at least one of a PMI format and a CQI format corresponding to the PMI and CQI reported in the CSI report, respectively, is limited to wideband. [0211] In an eighth embodiment of the second set of embodiments, a UE is configured with up to two CSI-IM resources within a single CSI reporting setting, wherein a first of the two CSI-IM resources corresponds to inter-cell interference, i.e., interference corresponding to a best- case scenario, i.e., an upper bound of the CQI, SNR, and/or SINR value(s), and a second of the two CSI-IM resources corresponds to intra-cell interference, i.e., interference corresponding to a worst-case scenario, i.e., a lower bound of the CQI, SNR, and/or SINR value(s). [0212] In a third set of embodiments, there may be an SRS-based CJT codebook. In general, PUSCH transmission(s) may be dynamically scheduled by an UL grant in a DCI, or the transmission can correspond to a configured grant Type 1 or Type 2. The configured grant Type 1 PUSCH transmission may be semi-statically configured to operate upon the reception of higher layer parameter of configuredGrantConfig including rrc-ConfiguredUplinkGrant without the detection of an UL grant in a DCI. The configured grant Type 2 PUSCH transmission is semi- persistently scheduled by an UL grant in a valid activation DCI after the reception of higher layer parameter configuredGrantConfig not including rrc-ConfiguredUplinkGrant. If configuredGrantConfigToAddModList-r16 is configured, more than one configured grant configuration of configured grant Type 1 and/or configured grant Type 2 may be active at the same time on an active bandwidth part (“BWP”) of a serving cell. [0213] For the PUSCH transmission corresponding to a Type 1 configured grant or a Type 2 configured grant activated by DCI format 0_0 or 0_1, the parameters applied for the transmission are provided by configuredGrantConfig except for dataScramblingIdentityPUSCH, txConfig, codebookSubset, maxRank, scaling of UCI-OnPUSCH, which are provided by pusch-Config. For the PUSCH transmission corresponding to a Type 2 configured grant activated by DCI format 0_2, the parameters applied for the transmission are provided by configuredGrantConfig except for dataScramblingIdentityPUSCH, txConfig, codebookSubsetForDCI-Format0-2-r16, maxRankForDCI-Format0-2-r16, scaling of UCI-OnPUSCH, resourceAllocationType1GranularityForDCI-Format0-2-r16 provided by pusch-Config. If the UE is provided with transformPrecoder in configuredGrantConfig, the UE applies the higher layer parameter tp-pi2BPSK, if provided in pusch-Config, according to the procedure for the PUSCH transmission corresponding to a configured grant. [0214] For the PUSCH retransmission scheduled by a PDCCH with cyclic redundance check (“CRC”) scrambled by CS-RNTI with a new data indicator (“NDI”) = 1, the parameters in pusch-Config are applied for the PUSCH transmission except for p0-NominalWithoutGrant, p0- PUSCH-Alpha, powerControlLoopToUse, pathlossReferenceIndex, mcs-Table, mcs- TableTransformPrecoder and transformPrecoder. [0215] For a UE configured with two uplinks in a serving cell, PUSCH retransmission for a TB on the serving cell is not expected to be on a different uplink than the uplink used for the PUSCH initial transmission of that TB. [0216] A UE shall upon detection of a PDCCH with a configured DCI format 0_0, 0_1 or 0_2 transmit the corresponding PUSCH as indicated by that DCI. Upon detection of a DCI format 0_1 or 0_2 with "UL shared channel (“SCH”) (“UL-SCH”) indicator" set to "0" and with a non- zero "CSI request" where the associated "reportQuantity" in CSI-ReportConfig set to "none" for all CSI report(s) triggered by "CSI request" in this DCI format 0_1 or 0_2, the UE ignores all fields in this DCI except the "CSI request" and the UE shall not transmit the corresponding PUSCH as indicated by this DCI format 0_1 or 0_2. When the UE is scheduled with multiple PUSCHs by a DCI, HARQ process ID indicated by this DCI applies to the first PUSCH, as described in clause 6.1.2.1, HARQ process ID is then incremented by 1 for each subsequent PUSCH(s) in the scheduled order, with modulo 16 operation applied. For any HARQ process ID(s) in a given scheduled cell, the UE is not expected to transmit a PUSCH that overlaps in time with another PUSCH. For any two HARQ process IDs in a given scheduled cell, if the UE is scheduled to start a first PUSCH transmission starting in symbol j by a PDCCH ending in symbol i, the UE is not expected to be scheduled to transmit a PUSCH starting earlier than the end of the first PUSCH by a PDCCH that ends later than symbol i. The UE is not expected to be scheduled to transmit another PUSCH by DCI format 0_0, 0_1 or 0_2 scrambled by C-RNTI or MCS-C-RNTI for a given HARQ process until after the end of the expected. Different embodiments that describe the SRS configuration corresponding to joint transmission are provided herein. In certain embodiments, a combination of one or more embodiments is not precluded. [0217] In a first embodiment of the third set of embodiments, a UE is configured with at least one SRS resource set, wherein each SRS resource of the at least one SRS resource set is pairwise mapped with an NZP CSI-RS resource for channel measurement. In a first example, the pairwise mapping is indicated via a spatial relation information indicated as part of an SRS configuration. In a second example, the pairwise mapping is indicated via a unified TCI framework corresponding to both UL reference signals and DL reference signals. [0218] In a second embodiment of the third set of embodiments, SRS resources corresponding to the at least one SRS resource set are used to characterize at least one of the CSI corresponding to each sub-band of multiple sub-bands, and intra-cell and/or inter-TRP interference corresponding to at least one of multiple CSI-RS resources. [0219] In a third embodiment of the third set of embodiments, a UE is configured with an SRS resource set, wherein each SRS resource of the SRS resource set is pairwise mapped with an NZP CSI-RS resource codepoint for channel measurement via a spatial relation information indicated as part of an SRS configuration. In a first example, the pairwise mapping is indicated via a spatial relation information indicated as part of an SRS configuration. In a second example, the pairwise mapping is indicated via a unified TCI framework corresponding to both UL reference signals and DL reference signals. [0220] In a fourth embodiment of the third set of embodiments, a UE is configured with an SRS configuration with a usage parameter set to one of antenna switching or interference management. [0221] In a fifth embodiment of the third set of embodiments, an SRS resource set codepoint corresponding to one or more SRS resources is indicated in a CSI reporting setting, wherein the SRS resources of the SRS resource set are paired with CSI-RS resources indicated as CMRs within the CSI reporting configuration. [0222] In a sixth embodiment of the third set of embodiments, the UE is configured via higher-layer configuration, e.g., RRC indication, or indication via DCI indication, to transmit the SRS symbols corresponding to the SRS resource set codepoint indicated in the CSI reporting setting, wherein the SRS symbols are scheduled to be transmitted at a first one or more slots that follow a second one or more slots in which a CSI report corresponding to the CSI reporting setting is transmitted. [0223] In a seventh embodiment of the third set of embodiments, the CSI reporting setting includes a report quantity that includes a CRI, and wherein the corresponding CSI report includes at least one CRI value. [0224] In an eighth embodiment of the third set of embodiments, the UE transmits a subset of the plurality of SRS resources indicated as part of the SRS resource set codepoint, wherein the subset of SRSs transmitted are paired with the CSI-RS resources indicated in the CRI codepoint via spatial relation information. [0225] In a ninth embodiment of the third set of embodiments, the UE transmits a subset of the plurality of SRS resources indicated as part of the SRS resource set codepoint, wherein the subset of SRSs transmitted are not paired with the CSI-RS resources indicated in the CRI codepoint via spatial relation information. [0226] In some embodiments, the terms antenna, panel, and antenna panel are used interchangeably. An antenna panel may be hardware that is used for transmitting and/or receiving radio signals at frequencies lower than 6 GHz (e.g., frequency range 1 (“FR1”)), or higher than 6 GHz (e.g., frequency range 2 (“FR2”) or millimeter wave (“mmWave”)). In certain embodiments, an antenna panel may include an array of antenna elements. Each antenna element may be connected to hardware, such as a phase shifter, that enables a control module to apply spatial parameters for transmission and/or reception of signals. The resulting radiation pattern may be called a beam, which may or may not be unimodal and may allow the device to amplify signals that are transmitted or received from spatial directions. [0227] In various embodiments, an antenna panel may or may not be virtualized as an antenna port. An antenna panel may be connected to a baseband processing module through a radio frequency (“RF”) chain for each transmission (e.g., egress) and reception (e.g., ingress) direction. A capability of a device in terms of a number of antenna panels, their duplexing capabilities, their beamforming capabilities, and so forth, may or may not be transparent to other devices. In some embodiments, capability information may be communicated via signaling or capability information may be provided to devices without a need for signaling. If information is available to other devices the information may be used for signaling or local decision making. [0228] In some embodiments, a UE antenna panel may be a physical or logical antenna array including a set of antenna elements or antenna ports that share a common or a significant portion of a radio frequency (“RF”) chain (e.g., in-phase and/or quadrature (“I/Q”) modulator, analog to digital (“A/D”) converter, local oscillator, phase shift network). The UE antenna panel or UE panel may be a logical entity with physical UE antennas mapped to the logical entity. The mapping of physical UE antennas to the logical entity may be up to UE implementation. Communicating (e.g., receiving or transmitting) on at least a subset of antenna elements or antenna ports active for radiating energy (e.g., active elements) of an antenna panel may require biasing or powering on of an RF chain which results in current drain or power consumption in a UE associated with the antenna panel (e.g., including power amplifier and/or low noise amplifier (“LNA”) power consumption associated with the antenna elements or antenna ports). The phrase “active for radiating energy,” as used herein, is not meant to be limited to a transmit function but also encompasses a receive function. Accordingly, an antenna element that is active for radiating energy may be coupled to a transmitter to transmit radio frequency energy or to a receiver to receive radio frequency energy, either simultaneously or sequentially, or may be coupled to a transceiver in general, for performing its intended functionality. Communicating on the active elements of an antenna panel enables generation of radiation patterns or beams. [0229] In certain embodiments, depending on a UE s own implementation, a UE panel may have at least one of the following functionalities as an operational role of unit of antenna group to control its transmit (“TX”) beam independently, unit of antenna group to control its transmission power independently, and/pr unit of antenna group to control its transmission timing independently. The “UE panel” may be transparent to a gNB. For certain conditions, a gNB or network may assume that a mapping between a UE’s physical antennas to the logical entity “UE panel” may not be changed. For example, a condition may include until the next update or report from UE or include a duration of time over which the gNB assumes there will be no change to mapping. A UE may report its UE capability with respect to the “UE panel” to the gNB or network. The UE capability may include at least the number of “UE panels.” In one embodiment, a UE may support UL transmission from one beam within a panel. With multiple panels, more than one beam (e.g., one beam per panel) may be used for UL transmission. In another embodiment, more than one beam per panel may be supported and/or used for UL transmission. [0230] In some embodiments, an antenna port may be defined such that a channel over which a symbol on the antenna port is conveyed may be inferred from the channel over which another symbol on the same antenna port is conveyed. [0231] In certain embodiments, two antenna ports are said to be quasi co-located (“QCL”) if large-scale properties of a channel over which a symbol on one antenna port is conveyed may be inferred from the channel over which a symbol on another antenna port is conveyed. Large- scale properties may include one or more of delay spread, Doppler spread, Doppler shift, average gain, average delay, and/or spatial receive (“RX”) parameters. Two antenna ports may be quasi co-located with respect to a subset of the large-scale properties and different subset of large-scale properties may be indicated by a QCL Type. For example, a qcl-Type may take one of the following values: 1) 'QCL-TypeA': {Doppler shift, Doppler spread, average delay, delay spread}; 2) 'QCL-TypeB': {Doppler shift, Doppler spread}; 3) 'QCL-TypeC': {Doppler shift, average delay}; and 4) 'QCL-TypeD': {Spatial Rx parameter}. Other QCL-Types may be defined based on combination of one or large-scale properties. [0232] In various embodiments, spatial RX parameters may include one or more of: angle of arrival (“AoA”), dominant AoA, average AoA, angular spread, power angular spectrum (“PAS”) of AoA, average angle of departure (“AoD”), PAS of AoD, transmit and/or receive channel correlation, transmit and/or receive beamforming, and/or spatial channel correlation. [0233] In certain embodiments, QCL-TypeA, QCL-TypeB, and QCL-TypeC may be applicable for all carrier frequencies, but QCL-TypeD may be applicable only in higher carrier frequencies (e.g., mmWave, FR2, and beyond), where the UE may not be able to perform omni- directional transmission (e.g., the UE would need to form beams for directional transmission). For a QCL-TypeD between two reference signals A and B, the reference signal A is considered to be spatially co-located with reference signal B and the UE may assume that the reference signals A and B can be received with the same spatial filter (e.g., with the same RX beamforming weights). [0234] In some embodiments, an “antenna port” may be a logical port that may correspond to a beam (e.g., resulting from beamforming) or may correspond to a physical antenna on a device. In certain embodiments, a physical antenna may map directly to a single antenna port in which an antenna port corresponds to an actual physical antenna. In various embodiments, a set of physical antennas, a subset of physical antennas, an antenna set, an antenna array, or an antenna sub-array may be mapped to one or more antenna ports after applying complex weights and/or a cyclic delay to the signal on each physical antenna. The physical antenna set may have antennas from a single module or panel or from multiple modules or panels. The weights may be fixed as in an antenna virtualization scheme, such as cyclic delay diversity (“CDD”). A procedure used to derive antenna ports from physical antennas may be specific to a device implementation and transparent to other devices. [0235] In certain embodiments, a transmission configuration indicator (“TCI”) state (“TCI-state”) associated with a target transmission may indicate parameters for configuring a quasi-co-location relationship between the target transmission (e.g., target RS of demodulation (“DM”) reference signal (“RS”) (“DM-RS”) ports of the target transmission during a transmission occasion) and a source reference signal (e.g., synchronization signal block (“SSB”), CSI-RS, and/or sounding reference signal (“SRS”)) with respect to quasi co-location type parameters indicated in a corresponding TCI state. The TCI describes which reference signals are used as a QCL source, and what QCL properties may be derived from each reference signal. A device may receive a configuration of a plurality of transmission configuration indicator states for a serving cell for transmissions on the serving cell. In some embodiments, a TCI state includes at least one source RS to provide a reference (e.g., UE assumption) for determining QCL and/or a spatial filter. [0236] In some embodiments, spatial relation information associated with a target transmission may indicate a spatial setting between a target transmission and a reference RS (e.g., SSB, CSI-RS, and/or SRS). For example, a UE may transmit a target transmission with the same spatial domain filter used for receiving a reference RS (e.g., DL RS such as SSB and/or CSI-RS). In another example, a UE may transmit a target transmission with the same spatial domain transmission filter used for the transmission of a RS (e.g., UL RS such as SRS). A UE may receive a configuration of multiple spatial relation information configurations for a serving cell for transmissions on a serving cell. [0237] In some of the embodiments described herein, a UL TCI state is provided if a device is configured with separate DL and/or UL TCI by RRC signaling. The UL TCI state may include a source reference signal which provides a reference for determining UL spatial domain transmission filter for the UL transmission (e.g., dynamic-grant/configured-grant based PUSCH, dedicated PUCCH resources) in a CC or across a set of configured CCs and/or BWPs. [0238] In various embodiments described herein, a joint DL and/or UL TCI state is provided if the device is configured with joint DL and/or UL TCI by RRC signaling (e.g., configuration of joint TCI or separate DL and/or UL TCI is based on RRC signaling). The joint DL and/or UL TCI state refers to at least a common source reference RS used for determining both the DL QCL information and the UL spatial transmission filter. The source RS determined from the indicated joint (or common) TCI state provides QCL Type-D indication (e.g., for device- dedicated PDCCH and/or physical downlink shared channel (“PDSCH”)) and is used to determine UL spatial transmission filter (e.g., for UE-dedicated PUSCH and/or PUCCH) for a CC or across a set of configured CCs and/or BWPs. In one example, the UL spatial transmission filter is derived from the RS of DL QCL Type D in the joint TCI state. The spatial setting of the UL transmission may be according to the spatial relation with a reference to the source RS configured with qcl- Type set to 'typeD' in the joint TCI state. [0239] Figure 9 is a flow chart diagram illustrating one embodiment of a method 900 for configuring information for a CSI report. In some embodiments, the method 900 is performed by an apparatus, such as the remote unit 102. In certain embodiments, the method 900 may be performed by a processor executing program code, for example, a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, a FPGA, or the like. [0240] In various embodiments, the method 900 includes receiving 902 a CSI reporting setting from a network. The CSI reporting setting corresponds to joint transmission from a plurality of network nodes. In some embodiments, the method 900 includes receiving 904 a plurality of CSI-RS segments configured for channel measurement based on the CSI reporting setting. In certain embodiments, the method 900 includes receiving 906 a configuration corresponding to at least one SRS segment. Each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the plurality of CSI-RS segments. In various embodiments, the method 900 includes generating 908 a set of CQI values, a set of PMI values, or a combination thereof based on the plurality of CSI-RS segments. In some embodiments, the method 900 includes reporting 910, to the network, a CSI report including the set of CQI values, the set of PMI values, or the combination thereof. [0241] In certain embodiments, each SRS segment of the at least one SRS segment comprises an SRS resource set, a group of at least one SRS resource of the SRS resource set, or a group of at least one SRS port of the SRS resource set. In some embodiments, each CSI-RS segment of the plurality of CSI-RS segments comprises a NZP CSI-RS resource or a group of at least one NZP CSI-RS port of an NZP CSI-RS resource. In various embodiments, the CSI report comprises a PMI corresponding to each CSI-RS segment of the plurality of CSI-RS segments. [0242] In one embodiment, the PMI is reported in a wideband format. In certain embodiments, the CSI report comprises a CQI corresponding to each CSI-RS segment of the plurality of CSI-RS segments. In some embodiments, the CQI is reported in a wideband format. [0243] In various embodiments, the CQI is reported in a sub-band format, and CQI values of different sub-bands are encoded via a compression code so that: a number of encoded CQI values that are reported is less than a number of CQI values corresponding to the CQI values of different sub-bands prior to the encoding; a number of bits corresponding to encoded CQI values that are reported is less than a number of bits corresponding to the CQI values of different sub- bands prior to the encoding; or a combination thereof. In one embodiment, the CQI is reported as signal-to-noise ratio values, signal-to-interference ratio values, or signal-to-interference-plus- noise ratio values. In certain embodiments, the CSI reporting setting corresponding to the joint transmission is identified via: a number of configured CSI-RS resource groups; a number of configured CSI-RS port groups; a configured SRS resource set identification; a configured number of PMIs to be reported; a configured number of CQIs to be reported; or some combination thereof. [0244] In some embodiments, the method 900 further comprises configuring at least one CSI-IM resource. In various embodiments, a CQI of the set of CQI values is based only on a CMR and the CSI-IM resource. In one embodiment, the at least one SRS segment is configured with a usage parameter set to antenna switching or interference management. [0245] In certain embodiments, the CSI report comprises a CRI codepoint corresponding to at least one CSI-RS segment of the plurality of CSI-RS segments. In some embodiments, at least one PMI value of the set of PMI values and one CQI value of the set of CQI values correspond to the at least one CSI-RS segment corresponding to the CRI codepoint. In various embodiments, the at least one CSI-RS segment corresponding to the CRI codepoint is mapped to a subset of the at least one SRS segment via spatial relation information or a TCI state. [0246] In one embodiment, the method 900 further comprises transmitting the subset of the at least one SRS segment over a first set of at least one slot that succeeds a second set of at least one set on which the CSI report is transmitted. In certain embodiments, the method 900 further comprises transmitting a complement of the subset of the at least one SRS segment over a first set of at least one slot that succeed a second set of at least one slot on which the CSI report is transmitted. [0247] In some embodiments, each network node of the plurality of network nodes corresponds to a CSI-RS segment of the plurality of CSI-RS segments. In various embodiments, SRS segments of the at least one SRS segment characterizes: CSI corresponding to each sub-band of multiple sub-bands; interference corresponding to a subset of the plurality of network nodes; or a combination thereof. [0248] Figure 10 is a flow chart diagram illustrating another embodiment of a method 1000 for configuring information for a CSI report. In some embodiments, the method 1000 is performed by an apparatus, such as the network unit 104. In certain embodiments, the method 1000 may be performed by a processor executing program code, for example, a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, a FPGA, or the like. [0249] In various embodiments, the method 1000 includes transmitting 1002 a CSI reporting setting to a UE. The CSI reporting setting corresponds to joint transmission from a plurality of network nodes. In some embodiments, the method 1000 includes transmitting 1004 a plurality of CSI-RS segments configured for channel measurement based on the CSI reporting setting. In certain embodiments, the method 1000 includes transmitting 1006 a configuration corresponding to at least one SRS segment. Each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the plurality of CSI-RS segments. In various embodiments, the method 1000 includes receiving 1008, from the UE, a CSI report including a set of CQI values, a set of PMI values, or a combination thereof based on the plurality of CSI-RS segments. [0250] In certain embodiments, each SRS segment of the at least one SRS segment comprises an SRS resource set, a group of at least one SRS resource of the SRS resource set, or a group of at least one SRS port of the SRS resource set. In some embodiments, each CSI-RS segment of the plurality of CSI-RS segments comprises a NZP CSI-RS resource or a group of at least one NZP CSI-RS port of an NZP CSI-RS resource. In various embodiments, the CSI report comprises a PMI corresponding to each CSI-RS segment of the plurality of CSI-RS segments. [0251] In one embodiment, the PMI is reported in a wideband format. In certain embodiments, the CSI report comprises a CQI corresponding to each CSI-RS segment of the plurality of CSI-RS segments. In some embodiments, the CQI is reported in a wideband format. [0252] In various embodiments, the CQI is reported in a sub-band format, and CQI values of different sub-bands are encoded via a compression code so that: a number of encoded CQI values that are reported is less than a number of CQI values corresponding to the CQI values of different sub-bands prior to the encoding; a number of bits corresponding to encoded CQI values that are reported is less than a number of bits corresponding to the CQI values of different sub- bands prior to the encoding; or a combination thereof. In one embodiment, the CQI is reported as signal-to-noise ratio values, signal-to-interference ratio values, or signal-to-interference-plus- noise ratio values. In certain embodiments, the CSI reporting setting corresponding to the joint transmission is identified via: a number of configured CSI-RS resource groups; a number of configured CSI-RS port groups; a configured SRS resource set identification; a configured number of PMIs to be reported; a configured number of CQIs to be reported; or some combination thereof. [0253] In some embodiments, the at least one SRS segment is configured with a usage parameter set to antenna switching or interference management. In various embodiments, the CSI report comprises a CRI codepoint corresponding to at least one CSI-RS segment of the plurality of CSI-RS segments. In one embodiment, at least one PMI value of the set of PMI values and one CQI value of the set of CQI values correspond to the at least one CSI-RS segment corresponding to the CRI codepoint. [0254] In certain embodiments, the at least one CSI-RS segment corresponding to the CRI codepoint is mapped to a subset of the at least one SRS segment via spatial relation information or a TCI state. In some embodiments, the method 1000 further comprises receiving the subset of the at least one SRS segment over a first set of at least one slot that succeeds a second set of at least one set on which the CSI report is transmitted. In various embodiments, the method 1000 further comprises receiving a complement of the subset of the at least one SRS segment over a first set of at least one slot that succeed a second set of at least one slot on which the CSI report is transmitted. [0255] In one embodiment, an apparatus comprises: a receiver to: receive a CSI reporting setting from a network, wherein the CSI reporting setting corresponds to joint transmission from a plurality of network nodes; receive a plurality of CSI-RS segments configured for channel measurement based on the CSI reporting setting; and receive a configuration corresponding to at least one SRS segment, wherein each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the plurality of CSI-RS segments; a processor to generate a set of CQI values, a set of PMI values, or a combination thereof based on the plurality of CSI-RS segments; and a transmitter to report, to the network, a CSI report comprising the set of CQI values, the set of PMI values, or the combination thereof. [0256] In certain embodiments, each SRS segment of the at least one SRS segment comprises an SRS resource set, a group of at least one SRS resource of the SRS resource set, or a group of at least one SRS port of the SRS resource set. [0257] In some embodiments, each CSI-RS segment of the plurality of CSI-RS segments comprises a NZP CSI-RS resource or a group of at least one NZP CSI-RS port of an NZP CSI-RS resource. [0258] In various embodiments, the CSI report comprises a PMI corresponding to each CSI-RS segment of the plurality of CSI-RS segments. [0259] In one embodiment, the PMI is reported in a wideband format. [0260] In certain embodiments, the CSI report comprises a CQI corresponding to each CSI-RS segment of the plurality of CSI-RS segments. [0261] In some embodiments, the CQI is reported in a wideband format. [0262] In various embodiments, the CQI is reported in a sub-band format, and CQI values of different sub-bands are encoded via a compression code so that: a number of encoded CQI values that are reported is less than a number of CQI values corresponding to the CQI values of different sub-bands prior to the encoding; a number of bits corresponding to encoded CQI values that are reported is less than a number of bits corresponding to the CQI values of different sub- bands prior to the encoding; or a combination thereof. [0263] In one embodiment, the CQI is reported as signal-to-noise ratio values, signal-to- interference ratio values, or signal-to-interference-plus-noise ratio values. [0264] In certain embodiments, the CSI reporting setting corresponding to the joint transmission is identified via: a number of configured CSI-RS resource groups; a number of configured CSI-RS port groups; a configured SRS resource set identification; a configured number of PMIs to be reported; a configured number of CQIs to be reported; or some combination thereof. [0265] In some embodiments, the processor further to configure at least one CSI-IM resource. [0266] In various embodiments, a CQI of the set of CQI values is based only on a CMR and the CSI-IM resource. [0267] In one embodiment, the at least one SRS segment is configured with a usage parameter set to antenna switching or interference management. [0268] In certain embodiments, the CSI report comprises a CRI codepoint corresponding to at least one CSI-RS segment of the plurality of CSI-RS segments. [0269] In some embodiments, at least one PMI value of the set of PMI values and one CQI value of the set of CQI values correspond to the at least one CSI-RS segment corresponding to the CRI codepoint. [0270] In various embodiments, the at least one CSI-RS segment corresponding to the CRI codepoint is mapped to a subset of the at least one SRS segment via spatial relation information or a TCI state. [0271] In one embodiment, the transmitter further to transmit the subset of the at least one SRS segment over a first set of at least one slot that succeeds a second set of at least one set on which the CSI report is transmitted. [0272] In certain embodiments, the transmitter further to transmit a complement of the subset of the at least one SRS segment over a first set of at least one slot that succeed a second set of at least one slot on which the CSI report is transmitted. [0273] In some embodiments, each network node of the plurality of network nodes corresponds to a CSI-RS segment of the plurality of CSI-RS segments. [0274] In various embodiments, SRS segments of the at least one SRS segment characterizes: CSI corresponding to each sub-band of multiple sub-bands; interference corresponding to a subset of the plurality of network nodes; or a combination thereof. [0275] In one embodiment, a method in a UE comprises: receiving a CSI reporting setting from a network, wherein the CSI reporting setting corresponds to joint transmission from a plurality of network nodes; receiving a plurality of CSI-RS segments configured for channel measurement based on the CSI reporting setting; receiving a configuration corresponding to at least one SRS segment, wherein each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the plurality of CSI-RS segments; generating a set of CQI values, a set of PMI values, or a combination thereof based on the plurality of CSI-RS segments; and reporting, to the network, a CSI report comprising the set of CQI values, the set of PMI values, or the combination thereof. [0276] In certain embodiments, each SRS segment of the at least one SRS segment comprises an SRS resource set, a group of at least one SRS resource of the SRS resource set, or a group of at least one SRS port of the SRS resource set. [0277] In some embodiments, each CSI-RS segment of the plurality of CSI-RS segments comprises a NZP CSI-RS resource or a group of at least one NZP CSI-RS port of an NZP CSI-RS resource. [0278] In various embodiments, the CSI report comprises a PMI corresponding to each CSI-RS segment of the plurality of CSI-RS segments. [0279] In one embodiment, the PMI is reported in a wideband format. [0280] In certain embodiments, the CSI report comprises a CQI corresponding to each CSI-RS segment of the plurality of CSI-RS segments. [0281] In some embodiments, the CQI is reported in a wideband format. [0282] In various embodiments, the CQI is reported in a sub-band format, and CQI values of different sub-bands are encoded via a compression code so that: a number of encoded CQI values that are reported is less than a number of CQI values corresponding to the CQI values of different sub-bands prior to the encoding; a number of bits corresponding to encoded CQI values that are reported is less than a number of bits corresponding to the CQI values of different sub- bands prior to the encoding; or a combination thereof. [0283] In one embodiment, the CQI is reported as signal-to-noise ratio values, signal-to- interference ratio values, or signal-to-interference-plus-noise ratio values. [0284] In certain embodiments, the CSI reporting setting corresponding to the joint transmission is identified via: a number of configured CSI-RS resource groups; a number of configured CSI-RS port groups; a configured SRS resource set identification; a configured number of PMIs to be reported; a configured number of CQIs to be reported; or some combination thereof. [0285] In some embodiments, the method further comprises configuring at least one CSI- IM resource. [0286] In various embodiments, a CQI of the set of CQI values is based only on a CMR and the CSI-IM resource. [0287] In one embodiment, the at least one SRS segment is configured with a usage parameter set to antenna switching or interference management. [0288] In certain embodiments, the CSI report comprises a CRI codepoint corresponding to at least one CSI-RS segment of the plurality of CSI-RS segments. [0289] In some embodiments, at least one PMI value of the set of PMI values and one CQI value of the set of CQI values correspond to the at least one CSI-RS segment corresponding to the CRI codepoint. [0290] In various embodiments, the at least one CSI-RS segment corresponding to the CRI codepoint is mapped to a subset of the at least one SRS segment via spatial relation information or a TCI state. [0291] In one embodiment, the method further comprises transmitting the subset of the at least one SRS segment over a first set of at least one slot that succeeds a second set of at least one set on which the CSI report is transmitted. [0292] In certain embodiments, the method further comprises transmitting a complement of the subset of the at least one SRS segment over a first set of at least one slot that succeed a second set of at least one slot on which the CSI report is transmitted. [0293] In some embodiments, each network node of the plurality of network nodes corresponds to a CSI-RS segment of the plurality of CSI-RS segments. [0294] In various embodiments, SRS segments of the at least one SRS segment characterizes: CSI corresponding to each sub-band of multiple sub-bands; interference corresponding to a subset of the plurality of network nodes; or a combination thereof. [0295] In one embodiment, an apparatus comprises: a transmitter to: transmit a CSI reporting setting to a UE, wherein the CSI reporting setting corresponds to joint transmission from a plurality of network nodes; transmit a plurality of CSI-RS segments configured for channel measurement based on the CSI reporting setting; and transmit a configuration corresponding to at least one SRS segment, wherein each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the plurality of CSI-RS segments; and a receiver to receive, from the UE, a CSI report comprising a set of CQI values, a set of PMI values, or a combination thereof based on the plurality of CSI-RS segments. [0296] In certain embodiments, each SRS segment of the at least one SRS segment comprises an SRS resource set, a group of at least one SRS resource of the SRS resource set, or a group of at least one SRS port of the SRS resource set. [0297] In some embodiments, each CSI-RS segment of the plurality of CSI-RS segments comprises a NZP CSI-RS resource or a group of at least one NZP CSI-RS port of an NZP CSI-RS resource. [0298] In various embodiments, the CSI report comprises a PMI corresponding to each CSI-RS segment of the plurality of CSI-RS segments. [0299] In one embodiment, the PMI is reported in a wideband format. [0300] In certain embodiments, the CSI report comprises a CQI corresponding to each CSI-RS segment of the plurality of CSI-RS segments. [0301] In some embodiments, the CQI is reported in a wideband format. [0302] In various embodiments, the CQI is reported in a sub-band format, and CQI values of different sub-bands are encoded via a compression code so that: a number of encoded CQI values that are reported is less than a number of CQI values corresponding to the CQI values of different sub-bands prior to the encoding; a number of bits corresponding to encoded CQI values that are reported is less than a number of bits corresponding to the CQI values of different sub- bands prior to the encoding; or a combination thereof. [0303] In one embodiment, the CQI is reported as signal-to-noise ratio values, signal-to- interference ratio values, or signal-to-interference-plus-noise ratio values. [0304] In certain embodiments, the CSI reporting setting corresponding to the joint transmission is identified via: a number of configured CSI-RS resource groups; a number of configured CSI-RS port groups; a configured SRS resource set identification; a configured number of PMIs to be reported; a configured number of CQIs to be reported; or some combination thereof. [0305] In some embodiments, the at least one SRS segment is configured with a usage parameter set to antenna switching or interference management. [0306] In various embodiments, the CSI report comprises a CRI codepoint corresponding to at least one CSI-RS segment of the plurality of CSI-RS segments. [0307] In one embodiment, at least one PMI value of the set of PMI values and one CQI value of the set of CQI values correspond to the at least one CSI-RS segment corresponding to the CRI codepoint. [0308] In certain embodiments, the at least one CSI-RS segment corresponding to the CRI codepoint is mapped to a subset of the at least one SRS segment via spatial relation information or a TCI state. [0309] In some embodiments, the receiver further to receive the subset of the at least one SRS segment over a first set of at least one slot that succeeds a second set of at least one set on which the CSI report is transmitted. [0310] In various embodiments, the receiver further to receive a complement of the subset of the at least one SRS segment over a first set of at least one slot that succeed a second set of at least one slot on which the CSI report is transmitted. [0311] In one embodiment, a method in a network device comprises: transmitting a CSI reporting setting to a UE, wherein the CSI reporting setting corresponds to joint transmission from a plurality of network nodes; transmitting a plurality of CSI-RS segments configured for channel measurement based on the CSI reporting setting; transmitting a configuration corresponding to at least one SRS segment, wherein each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the plurality of CSI-RS segments; and receiving, from the UE, a CSI report comprising a set of CQI values, a set of PMI values, or a combination thereof based on the plurality of CSI-RS segments. [0312] In certain embodiments, each SRS segment of the at least one SRS segment comprises an SRS resource set, a group of at least one SRS resource of the SRS resource set, or a group of at least one SRS port of the SRS resource set. [0313] In some embodiments, each CSI-RS segment of the plurality of CSI-RS segments comprises a NZP CSI-RS resource or a group of at least one NZP CSI-RS port of an NZP CSI-RS resource. [0314] In various embodiments, the CSI report comprises a PMI corresponding to each CSI-RS segment of the plurality of CSI-RS segments. [0315] In one embodiment, the PMI is reported in a wideband format. [0316] In certain embodiments, the CSI report comprises a CQI corresponding to each CSI-RS segment of the plurality of CSI-RS segments. [0317] In some embodiments, the CQI is reported in a wideband format. [0318] In various embodiments, the CQI is reported in a sub-band format, and CQI values of different sub-bands are encoded via a compression code so that: a number of encoded CQI values that are reported is less than a number of CQI values corresponding to the CQI values of different sub-bands prior to the encoding; a number of bits corresponding to encoded CQI values that are reported is less than a number of bits corresponding to the CQI values of different sub- bands prior to the encoding; or a combination thereof. [0319] In one embodiment, the CQI is reported as signal-to-noise ratio values, signal-to- interference ratio values, or signal-to-interference-plus-noise ratio values. [0320] In certain embodiments, the CSI reporting setting corresponding to the joint transmission is identified via: a number of configured CSI-RS resource groups; a number of configured CSI-RS port groups; a configured SRS resource set identification; a configured number of PMIs to be reported; a configured number of CQIs to be reported; or some combination thereof. [0321] In some embodiments, the at least one SRS segment is configured with a usage parameter set to antenna switching or interference management. [0322] In various embodiments, the CSI report comprises a CRI codepoint corresponding to at least one CSI-RS segment of the plurality of CSI-RS segments. [0323] In one embodiment, at least one PMI value of the set of PMI values and one CQI value of the set of CQI values correspond to the at least one CSI-RS segment corresponding to the CRI codepoint. [0324] In certain embodiments, the at least one CSI-RS segment corresponding to the CRI codepoint is mapped to a subset of the at least one SRS segment via spatial relation information or a TCI state. [0325] In some embodiments, the method further comprises receiving the subset of the at least one SRS segment over a first set of at least one slot that succeeds a second set of at least one set on which the CSI report is transmitted. [0326] In various embodiments, the method further comprises receiving a complement of the subset of the at least one SRS segment over a first set of at least one slot that succeed a second set of at least one slot on which the CSI report is transmitted. [0327] Embodiments may be practiced in other specific forms. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

CLAIMS 1. An apparatus for wireless communication, the apparatus comprising: a processor; and a memory coupled to the processor, the memory comprising instructions executable by the processor to cause the apparatus to: receive a channel state information (CSI) reporting setting from a network, wherein the CSI reporting setting corresponds to joint transmission from a plurality of network nodes; receive a plurality of CSI reference signal (CSI-RS) segments configured for channel measurement based on the CSI reporting setting; receive a configuration corresponding to at least one sounding reference signal (SRS) segment, wherein each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the plurality of CSI-RS segments; generate a set of channel quality indicator (CQI) values, a set of precoder matrix indicator (PMI) values, or a combination thereof based on the plurality of CSI-RS segments; and transmit a report, to the network, a CSI report comprising the set of CQI values, the set of PMI values, or the combination thereof.

2. The apparatus of claim 1, wherein each SRS segment of the at least one SRS segment comprises an SRS resource set, a group of at least one SRS resource of the SRS resource set, or a group of at least one SRS port of the SRS resource set.

3. The apparatus of claim 1, wherein each CSI-RS segment of the plurality of CSI-RS segments comprises a non-zero power (NZP) CSI-RS resource or a group of at least one NZP CSI-RS port of an NZP CSI-RS resource.

4. The apparatus of claim 1, wherein the CSI report comprises a PMI corresponding to each CSI-RS segment of the plurality of CSI-RS segments.

5. The apparatus of claim 1, wherein the CSI reporting setting corresponding to the joint transmission is identified via: a number of configured CSI-RS resource groups; a number of configured CSI-RS port groups; a configured SRS resource set identification; a configured number of PMIs to be reported; a configured number of CQIs to be reported; or a combination thereof.

6. The apparatus of claim 1, wherein the instructions are further executable by the processor to cause the apparatus to configure at least one CSI interference management (CSI-IM) resource.

7. The apparatus of claim 1, wherein the at least one SRS segment is configured with a usage parameter set to antenna switching or interference management.

8. The apparatus of claim 1, wherein the CSI report comprises a CSI-RS resource indicator (CRI) codepoint corresponding to at least one CSI-RS segment of the plurality of CSI-RS segments.

9. The apparatus of claim 8, wherein at least one PMI value of the set of PMI values and one CQI value of the set of CQI values correspond to the at least one CSI-RS segment corresponding to the CRI codepoint.

10. The apparatus of claim 8, wherein the at least one CSI-RS segment corresponding to the CRI codepoint is mapped to a subset of the at least one SRS segment via spatial relation information or a TCI state.

11. The apparatus of claim 10, wherein the instructions are further executable by the processor to cause the apparatus to transmit the subset of the at least one SRS segment over a first set of at least one slot that succeeds a second set of at least one set on which the CSI report is transmitted.

12. The apparatus of claim 10, wherein the instructions are further executable by the processor to cause the apparatus to transmit a complement of the subset of the at least one SRS segment over a first set of at least one slot that succeed a second set of at least one slot on which the CSI report is transmitted.

13. The apparatus of claim 1, wherein each network node of the plurality of network nodes corresponds to a CSI-RS segment of the plurality of CSI-RS segments.

14. The apparatus of claim 1, wherein SRS segments of the at least one SRS segment characterizes: CSI corresponding to each sub-band of multiple sub-bands; interference corresponding to a subset of the plurality of network nodes; or a combination thereof.

15. An apparatus for wireless communication, the apparatus comprising: a processor; and a memory coupled to the processor, the memory comprising instructions executable by the processor to cause the apparatus to: transmit a channel state information (CSI) reporting setting to a user equipment (UE), wherein the CSI reporting setting corresponds to joint transmission from a plurality of network nodes; transmit a plurality of CSI reference signal (CSI-RS) segments configured for channel measurement based on the CSI reporting setting; transmit a configuration corresponding to at least one sounding reference signal (SRS) segment, wherein each SRS segment of the at least one SRS segment is associated with a CSI-RS segment of the plurality of CSI-RS segments; and receive, from the UE, a CSI report comprising a set of channel quality indicator (CQI) values, a set of precoder matrix indicator (PMI) values, or a combination thereof based on the plurality of CSI-RS segments.