Channel state information reporting

Abstract

Apparatuses, methods, and systems are disclosed for channel state information reporting. One method (1100) includes receiving (1102) channel state information report configuration information. The channel state information report configuration information includes: information indicating one or more channel state information reference signal resource configurations associated with at least one non-zero-power channel state information reference signal resource set for channel measurement; and information indicating that channel state information report configurations corresponding to multiple points are used. The multiple points are associated with a primary group of points or a secondary group of points. The method (1100) includes performing (1104) channel measurement using the at least one non-zero-power channel state information reference signal resource set. The method (1100) includes generating (1106) a set of channel state information reports based on the channel state information report configuration information.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to U.S. Patent Application No. 63 / 015,359, filed April 20, 2020, entitled “Apparatus, Methods, and Systems for CSI Reporting Enhancement for Multi-TRP / Panel Transmission”, and U.S. Patent Application No. 63 / 015,372, filed April 20, 2020, entitled “Apparatus, Methods, and Systems for CSI Reporting Enhancement for Multi-TRP / Panel Transmission”, all of which are incorporated herein by reference in their entirety. Technical Field

[0003] The topics disclosed in this article generally relate to wireless communication, and more specifically to channel state information reporting. Background Technology

[0004] In some wireless communication networks, one or more channel state information reports can be made. In multi-TRP and / or multi-panel networks, channel state information reports may be transmitted inefficiently. Summary of the Invention

[0005] A method for channel state information reporting is disclosed. Apparatus and systems also perform the functions of this method. One embodiment of a method includes receiving channel state information reporting configuration information. The channel state information reporting configuration information includes: information indicating the configuration of one or more channel state information reference signal resources associated with one or more channel state information reference signal resource sets for channel measurement, interference measurement, or a combination thereof; and information indicating that channel state information feedback corresponding to a plurality of points is used. Each of the plurality of points is associated with a non-zero power channel state information reference signal resource of the channel state information reference signal resource set for channel measurement, and at least one of the plurality of points is associated with one or more channel state information interference management resources for zero power interference measurement. In some embodiments, the method includes performing channel measurement using the channel state information reference signal resource set. In various embodiments, the method includes generating a set of channel state information reports based on the channel state information reporting configuration information.

[0006] An apparatus for channel state information reporting includes a receiver configured to receive channel state information reporting configuration information, wherein the channel state information reporting configuration information includes: information indicating the configuration of one or more channel state information reference signal resources associated with one or more channel state information reference signal resource sets for channel measurement, interference measurement, or a combination thereof; and information indicating that channel state information feedback corresponding to a plurality of points is used, wherein each of the plurality of points is associated with a non-zero power channel state information reference signal resource of the channel state information reference signal resource set for channel measurement, and at least one of the plurality of points is associated with one or more channel state information interference management resources for zero power interference measurement. In various embodiments, the apparatus includes a processor configured to: perform channel measurements using a set of channel state information reference signal resources; and generate a set of channel state information reports based on channel state information report configuration information, wherein each of a plurality of points corresponds to a transmit and receive point or a panel of transmit and receive points, and wherein information indicating the use of channel state information feedback for the plurality of points includes: radio resource control parameters within the channel state information report configuration; the number of channel state information reports within the channel state information report configuration; quasi-co-location relationships relating to one or more channel state information reference signal resources within one or more sets of channel state information reference signal resources; code points indicating different downlink control information states; codebook type parameters; codebook configuration parameters; transmission configuration indicator code points from a transmission configuration including at least two transmission configuration indicator states; indications of spatial multiplexing schemes across the plurality of points; or combinations thereof.

[0007] Another embodiment of a channel state information (CSA) reporting method includes receiving CSA configuration information, wherein the CSA configuration information includes: information indicating the configuration of one or more CSA reference signal resources associated with a CSA reference signal resource set for channel measurements and a CSA interference management resource set for interference measurements; and information indicating that CSA feedback corresponding to a plurality of points is used, wherein each of the plurality of points is associated with a non-zero power CSA reference signal resource for channel measurements in the CSA reference signal resource set, and the plurality of points are associated with one or more CSA interference management resources for interference measurements in the CSA interference management resource set. In some embodiments, the method includes generating a set of CSA reports based on the CSA configuration information, wherein each CSA report in the set of CSA reports includes two parts. In various embodiments, the method includes reporting the set of CSA reports to a network.

[0008] Another device for channel state information reporting includes a receiver configured to receive channel state information reporting configuration information, wherein the channel state information reporting configuration information includes: information indicating the configuration of one or more channel state information reference signal resources associated with a channel state information reference signal resource set for channel measurement and a channel state information interference management resource set for interference measurement; and information indicating that channel state information feedback corresponding to a plurality of points is used, wherein each of the plurality of points is associated with a non-zero power channel state information reference signal resource for channel measurement in the channel state information reference signal resource set, the plurality of points are associated with one or more channel state information interference management resources for interference measurement in the channel state information interference management resource set, and each of the plurality of points corresponds to a transmit and receive point or a panel of transmit and receive points. In various embodiments, the device includes a processor configured to: generate a set of channel state information reports based on the channel state information reporting configuration information, wherein each channel state information report in the set of channel state information reports includes two parts; and report the set of channel state information reports to a network.

[0009] Another embodiment of a channel state information reporting method includes receiving channel state information reporting configuration information, wherein the channel state information reporting configuration information includes: information indicating one or more channel state information reference signal resource configurations associated with at least one non-zero power channel state information reference signal resource set for channel measurement; and information indicating that channel state information reporting configurations corresponding to a plurality of points are used, wherein the plurality of points are associated with a major group of points or a minor group of points. In some embodiments, the method includes performing channel measurements using at least one non-zero power channel state information reference signal resource set. In various embodiments, the method includes generating a set of channel state information reports based on the channel state information reporting configuration information.

[0010] Another device for channel state information reporting includes a receiver configured to receive channel state information reporting configuration information, wherein the channel state information reporting configuration information includes: information indicating one or more channel state information reference signal resource configurations associated with at least one non-zero power channel state information reference signal resource set for channel measurement; and information indicating that channel state information reporting configurations corresponding to a plurality of points are used, wherein the plurality of points are associated with a major group of points or a minor group of points. In various embodiments, the device includes a processor configured to: perform channel measurements using at least one non-zero power channel state information reference signal resource set; and generate a set of channel state information reports based on the channel state information reporting configuration information. Attached Figure Description

[0011] A more detailed description of the embodiments briefly described above will be presented with reference to specific embodiments illustrated in the accompanying drawings. It should be understood that these drawings depict only some embodiments and are not intended to be limiting of the scope; the embodiments will be described and explained with additional features and details using the drawings, wherein:

[0012] Figure 1 This is a schematic block diagram illustrating one embodiment of a wireless communication system for reporting channel state information;

[0013] Figure 2 This is a schematic block diagram illustrating one embodiment of a device that can be used for channel state information reporting;

[0014] Figure 3 This is a schematic block diagram illustrating one embodiment of a device that can be used for channel state information reporting;

[0015] Figure 4 This is a diagram illustrating one embodiment of a non-periodic triggering state that defines a list of CSI report settings;

[0016] Figure 5 This is a code example illustrating an embodiment of a process that indicates resource sets and QCL information through its non-periodic triggering state;

[0017] Figure 6 This is a code example illustrating an embodiment of an RRC configuration including NZP-CSI-RS resources and CSI-IM-resources;

[0018] Figure 7 This is a schematic block diagram illustrating one embodiment of partial CSI omissions for PUSCH-based CSI;

[0019] Figure 8 This is a schematic block diagram illustrating an embodiment in which two TRPs jointly transmit data to a user equipment using a single codeword;

[0020] Figure 9 This is a flowchart illustrating an embodiment of a method for reporting channel state information;

[0021] Figure 10 This is a flowchart illustrating another embodiment of a channel state information reporting method; and

[0022] Figure 11 This is a flowchart illustrating yet another embodiment of a method for reporting channel state information. Detailed Implementation

[0023] As those skilled in the art will understand, aspects of the embodiments can be embodied as a system, apparatus, method, or program product. Therefore, embodiments can take the form of a completely hardware embodiment, a completely software embodiment (including firmware, resident software, microcode, etc.), or an embodiment combining software and hardware aspects, which are generally referred to herein as “circuit,” “module,” or “system.” Furthermore, embodiments can take the form of a program product embodied in one or more computer-readable storage devices stored in machine-readable code, computer-readable code, and / or program code, hereinafter referred to as code. The storage device can be tangible, non-transitory, and / or non-transferable. The storage device may not embody signals. In one embodiment, the storage device only uses signals for accessing the code.

[0024] Certain functional units described in this specification may be designated as modules to more specifically emphasize their implementation independence. For example, a module may be implemented as hardware circuitry comprising custom-designed very large-scale integration (“VLSI”) circuitry or gate arrays, off-the-shelf semiconductors such as logic chips, transistors, or other discrete components. Modules may also be implemented in programmable hardware devices such as field-programmable gate arrays, programmable array logic, programmable logic devices, etc.

[0025] Modules can also be implemented in code and / or software to be executed by various types of processors. The identified code module may, for example, comprise one or more physical or logical blocks of executable code, which may be organized, for example, as objects, procedures, or functions. However, the executable files of the identified module do not need to be physically located together, but may include unrelated instructions stored in different locations, which, when logically connected together, constitute the module and achieve the module's stated purpose.

[0026] In practice, a code module can be a single instruction or many instructions, and can even be distributed across several different code segments, different programs, and across several memory devices. Similarly, in this document, operational data can be identified and visualized within a module, and can be represented in any suitable form and organized within any suitable type of data structure. Operational data can be collected as a single dataset or can be distributed across different locations, including different computer-readable storage devices. Where a module or part of a module is implemented in software, the software portion is stored on one or more computer-readable storage devices.

[0027] Any combination of one or more computer-readable media may be used. A computer-readable medium may be a computer-readable storage medium. A computer-readable storage medium may be a storage device for storing code. A storage device may be, for example, but not limited to, electronic, magnetic, optical, electromagnetic, infrared, holographic, micromechanical, or semiconductor systems, apparatuses, or devices, or any suitable combination thereof.

[0028] More specific examples of storage devices (a non-exhaustive list) will include the following: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (“RAM”), read-only memory (“ROM”), erasable programmable read-only memory (“EPROM” or flash memory), portable optical disc read-only memory (“CD-ROM”), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing. In the context of this document, a computer-readable storage medium can be any tangible medium capable of containing or storing programs for use by or in connection with an instruction execution system, apparatus, or device.

[0029] The code used to perform the operations of the embodiments can be any number of lines and can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Python, Ruby, Java, Smalltalk, and C++, and traditional procedural programming languages ​​such as the "C" programming language, and / or machine languages ​​such as assembly language. The code can be executed entirely on the user's computer, partially on the user's computer, or as a standalone software package on the user's computer, partially on a remote computer, or entirely on a remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer via any type of network, including a local area network ("LAN") or a wide area network ("WAN"), or it can be connected to an external computer (e.g., via the Internet through an Internet service provider).

[0030] Throughout this specification, references to "an embodiment," "embodiment," or similar language mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in at least one embodiment. Therefore, unless expressly stated otherwise, throughout this specification, the phrases "in an embodiment," "in an embodiment," and similar language may, but not necessarily all refer to the same embodiment, but rather mean "one or more, but not all, embodiments." Unless expressly stated otherwise, the terms "comprising," "including," "having," and variations thereof mean "including, but not limited to,". Unless expressly stated otherwise, the list of enumerated items does not imply that any or all items are mutually exclusive. Unless expressly stated otherwise, the terms "a," "an," and "the" also mean "one or more".

[0031] Furthermore, the features, structures, or characteristics of the described embodiments can be combined in any suitable manner. Numerous specific details, such as examples of programming, software modules, user selection, network transactions, database queries, database structures, hardware modules, hardware circuits, hardware chips, etc., are provided in the following description to provide a thorough understanding of the embodiments. However, those skilled in the art will recognize that the embodiments can be practiced without one or more of these specific details, or using other methods, components, materials, etc. In other instances, well-known structures, materials, or operations have not been shown or described in detail to avoid obscuring some aspects of the embodiments.

[0032] The following description of various aspects of embodiments is based on schematic flowcharts and / or schematic block diagrams of methods, apparatus, systems, and program products according to embodiments. It will be understood that each block of the schematic flowcharts and / or schematic block diagrams, and combinations of blocks in the schematic flowcharts and / or schematic block diagrams, can be implemented by code. The code can be provided to a processor of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus to generate machinery, such that instructions executable via the processor of the computer or other programmable data processing apparatus create means for implementing the functions / operations specified in the blocks or blocks of the schematic flowcharts and / or schematic block diagrams.

[0033] The code may also be stored in a storage device that is capable of instructing a computer, other programmable data processing apparatus or other device to operate in a particular manner, such that the instructions stored in the storage device produce an article of art that implements the function / operation specified in blocks or blocks of a schematic flowchart and / or schematic block diagram.

[0034] The code may also be loaded onto a computer, other programmable data processing apparatus or other device, causing a series of operational steps to be performed on the computer, other programmable apparatus or other device to produce a computer-implemented process, such that the code executing on the computer or other programmable apparatus provides a process for implementing the functions / operations specified in blocks or blocks of flowcharts and / or block diagrams.

[0035] The schematic flowcharts and / or schematic block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, systems, methods, and program products according to different embodiments. In this regard, each block in the schematic flowcharts and / or schematic block diagrams may represent a module, segment, or portion of code, which includes one or more executable instructions for implementing a specified logical function(s).

[0036] It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the figures. For example, two blocks shown consecutively may actually be executed substantially simultaneously, or these blocks may sometimes be executed in reverse order, depending on the functionality involved. Other steps and methods that are functionally, logically, or effectively equivalent to one or more blocks or portions thereof in the illustrated figures are conceivable.

[0037] While various arrow and line types may be used in flowcharts and / or block diagrams, it should be understood that they do not limit the scope of the respective embodiments. In fact, some arrows or other connectors may be used solely to indicate the logical flow of the depicted embodiment. For example, an arrow may indicate a wait or monitoring period of unspecified duration between enumeration steps in a depicted embodiment. It will also be noted that each block of the block diagram and / or flowchart, and combinations of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system performing a specific function or operation, or by a combination of dedicated hardware and code.

[0038] The description of the elements in each figure can be referenced to the elements in the preceding figures. The same numbers refer to the same elements in all figures, including alternative embodiments of the same elements.

[0039] Figure 1 An embodiment of a wireless communication system 100 for reporting channel state information is depicted. In one embodiment, the wireless communication system 100 includes a remote unit 102 and a network unit 104. Although Figure 1 A specific number of remote units 102 and network units 104 are depicted, but those skilled 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.

[0040] In one embodiment, remote unit 102 may include computing devices such as desktop computers, laptop computers, personal digital assistants (“PDAs”), tablet computers, smartphones, smart TVs (e.g., internet-connected televisions), set-top boxes, game consoles, security systems (including surveillance cameras), in-vehicle computers, network devices (e.g., routers, switches, modems), aircraft, drones, etc. In some embodiments, remote unit 102 includes wearable devices such as smartwatches, fitness bands, optical head-mounted displays, etc. Furthermore, remote unit 102 may be referred to as a subscriber unit, mobile device, mobile station, user, terminal, mobile terminal, fixed terminal, subscriber station, UE, user terminal, device, or other terms used in the art. Remote unit 102 may communicate directly with one or more network units 104 via UL communication signals. In some embodiments, remote unit 102 may communicate directly with other remote units 102 via sidelink communication.

[0041] Network unit 104 may be distributed across a geographical area. In some embodiments, network unit 104 may also be referred to as and / or may include access point, access terminal, base station, base station, core network (“CN”), radio network entity, node-B, evolved node-B (“eNB”), 5G node-B (“gNB”), home node-B, relay node, device, core network, air server, radio access node, access point (“AP”), new radio (“NR”), network entity, access and mobility management function (“AMF”), unified data management (“UDM”), unified data repository (“UDR”), UDM / UDR, policy control function (“PCF”), radio access network (“RAN”), network slice selection function (“NSSF”), operation, administration and management (“OAM”), session management function (“SMF”), user plane function (“UPF”), application function, authentication server function (“AUSF”), security anchor functionality (“SEAF”), trusted non-3GPP gateway function (“TNGF”), or any other term used in the art. Network unit 104 is typically part of a radio access network that includes one or more controllers communicatively coupled to one or more corresponding network units 104. The radio access network is typically communicatively coupled to one or more core networks, which may be coupled to other networks such as the Internet and the public switched telephone network. These and other elements of the radio access and core networks are not illustrated, but are generally well known to those skilled in the art.

[0042] In one implementation, the wireless communication system 100 conforms to the NR protocol standardized in the 3rd Generation Partnership Project (“3GPP”), wherein network unit 104 transmits using an OFDM modulation scheme on the downlink (“DL”), and remote unit 102 transmits using a single-carrier frequency division multiple access (“SC-FDMA”) scheme or an orthogonal frequency division multiplexing (“OFDM”) scheme on the uplink (“UL”). However, more generally, the wireless communication system 100 may implement other open or proprietary communication protocols, such as WiMAX, IEEE 802.11 variants, GSM, GPRS, UMTS, LTE variants, and CDMA2000. Protocols such as ZigBee and Sigfoxx. This disclosure is not intended to be limited to any particular wireless communication system architecture or protocol implementation.

[0043] Network unit 104 can serve multiple remote units 102 within a service area (e.g., a cell or cell sector) via a wireless communication link. Network unit 104 transmits DL communication signals in the time, frequency, and / or spatial domains to serve the remote units 102.

[0044] In various embodiments, remote unit 102 may receive channel state information report configuration information. The channel state information report configuration information includes: information indicating the configuration of one or more channel state information reference signal resources associated with one or more channel state information reference signal resource sets for channel measurement, interference measurement, or a combination thereof; and information indicating that channel state information feedback corresponding to multiple points is used. Each of the multiple points is associated with a non-zero power channel state information reference signal resource for channel measurement in the channel state information reference signal resource set, and at least one of the multiple points is associated with one or more channel state information interference management resources for zero-power interference measurement. In some embodiments, remote unit 102 may use the channel state information reference signal resource set to perform channel measurement. In various embodiments, remote unit 102 may generate a set of channel state information reports based on the channel state information report configuration information. Therefore, remote unit 102 can be used for channel state information reporting.

[0045] In some embodiments, remote unit 102 may receive channel state information report configuration information, wherein the channel state information report configuration information includes: information indicating the configuration of one or more channel state information reference signal resources associated with a channel state information reference signal resource set for channel measurement and a channel state information interference management resource set for interference measurement; and information indicating that channel state information feedback corresponding to a plurality of points is used, wherein each of the plurality of points is associated with a non-zero power channel state information reference signal resource for channel measurement in the channel state information reference signal resource set, and the plurality of points are associated with one or more channel state information interference management resources for interference measurement in the channel state information interference management resource set. In some embodiments, remote unit 102 may generate a set of channel state information reports based on the channel state information report configuration information, wherein each channel state information report in the set of channel state information reports includes two parts. In various embodiments, remote unit 102 may report the set of channel state information reports to the network. Therefore, remote unit 102 can be used for channel state information reporting.

[0046] In some embodiments, the remote unit 102 may receive channel state information report configuration information, wherein the channel state information report configuration information includes: information indicating one or more channel state information reference signal resource configurations associated with at least one non-zero power channel state information reference signal resource set for channel measurement; and information indicating that channel state information report configurations corresponding to a plurality of points are used, wherein the plurality of points are associated with a major group of points or a minor group of points. In some embodiments, the remote unit 102 may use at least one non-zero power channel state information reference signal resource set to perform channel measurement. In various embodiments, the remote unit 102 may generate a set of channel state information reports based on the channel state information report configuration information. Therefore, the remote unit 102 can be used for channel state information reporting.

[0047] Figure 2 An embodiment of a device 200 that can be used for channel state information reporting is depicted. The device 200 includes one embodiment of a 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 some 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, memory 204, transmitter 210, and receiver 212, and may not include the input device 206 and / or display 208.

[0048] In one embodiment, processor 202 may include any known controller capable of executing computer-readable instructions and / or performing logical operations. For example, processor 202 may be a microcontroller, microprocessor, central processing unit (“CPU”), graphics processing unit (“GPU”), auxiliary processing unit, field-programmable gate array (“FPGA”), or similar programmable controller. In some embodiments, processor 202 executes instructions stored in memory 204 to perform the methods and routines described herein. Processor 202 is communicatively coupled to memory 204, input device 206, display 208, transmitter 210, and receiver 212.

[0049] In one embodiment, memory 204 is a computer-readable storage medium. In some embodiments, memory 204 includes volatile computer storage media. For example, memory 204 may include RAM, including dynamic RAM (“DRAM”), synchronous dynamic RAM (“SDRAM”), and / or static RAM (“SRAM”). In some embodiments, memory 204 includes non-volatile computer storage media. For example, memory 204 may include a hard disk drive, flash memory, or any other suitable non-volatile computer storage device. In some embodiments, memory 204 includes both volatile and non-volatile computer storage media. In some embodiments, memory 204 also stores program code and related data, such as an operating system or other controller algorithms operating on remote unit 102.

[0050] In one embodiment, input device 206 may include any known computer input device, including a touchpad, button, keyboard, stylus, microphone, etc. In some embodiments, input device 206 may be integrated with display 208, for example, as a touchscreen or similar touch-sensitive display. In some embodiments, input device 206 includes a touchscreen, enabling text input using a virtual keyboard displayed on the touchscreen and / or by handwriting on the touchscreen. In some embodiments, input device 206 includes two or more different devices, such as a keyboard and a touchpad.

[0051] In one embodiment, display 208 may include any known electronically controllable display or display device. Display 208 may be designed to output visual, auditory, and / or tactile signals. In some embodiments, display 208 includes an electronic display capable of outputting visual data to a user. For example, 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 devices capable of outputting images, text, etc., to a user. As another non-limiting example, display 208 may include wearable displays such as smartwatches, smart glasses, head-up displays, etc. Furthermore, display 208 may be a component of a smartphone, personal digital assistant, television, desktop computer, laptop computer, personal computer, vehicle dashboard, etc.

[0052] In some embodiments, display 208 includes one or more speakers for generating sound. For example, display 208 may generate an audible alarm or notification (e.g., a beep or chime). In some embodiments, display 208 includes one or more haptic devices for generating vibration, motion, or other haptic feedback. In some embodiments, all or part of display 208 may be integrated with input device 206. For example, input device 206 and display 208 may form a touchscreen or similar touch-sensitive display. In other embodiments, display 208 may be located near input device 206.

[0053] In some embodiments, receiver 212 is configured to receive channel state information report configuration information, wherein the channel state information report configuration information includes: information indicating the configuration of one or more channel state information reference signal resources associated with one or more channel state information reference signal resource sets for channel measurement, interference measurement, or a combination thereof; and information indicating that channel state information feedback corresponding to a plurality of points is used, wherein each of the plurality of points is associated with a non-zero power channel state information reference signal resource of the channel state information reference signal resource set for channel measurement, and at least one of the plurality of points is associated with one or more channel state information interference management resources for zero power interference measurement. In various embodiments, processor 202 is configured to: perform channel measurements using a set of channel state information reference signal resources; and generate a set of channel state information reports based on channel state information report configuration information, wherein each of the plurality of points corresponds to a transmit and receive point or a panel of transmit and receive points, and wherein information indicating the channel state information feedback used for the plurality of points includes: radio resource control parameters within the channel state information report configuration; the number of channel state information reports within the channel state information report configuration; quasi-co-location relationships involving one or more channel state information reference signal resources within one or more sets of channel state information reference signal resources; code points indicating different downlink control information states; codebook type parameters; codebook configuration parameters; transmission configuration indicator code points from a transmission configuration including at least two transmission configuration indicator states; indications of spatial multiplexing schemes across the plurality of points; or combinations thereof.

[0054] In some embodiments, receiver 212 is configured to receive channel state information report configuration information, wherein the channel state information report configuration information includes: information indicating the configuration of one or more channel state information reference signal resources associated with a channel state information reference signal resource set for channel measurement and a channel state information interference management resource set for interference measurement; and information indicating that channel state information feedback corresponding to a plurality of points is used, wherein each of the plurality of points is associated with a non-zero power channel state information reference signal resource of the channel state information reference signal resource set for channel measurement, the plurality of points are associated with one or more channel state information interference management resources of the channel state information interference management resource set for interference measurement, and each of the plurality of points corresponds to a transmit and receive point or a transmit and receive point panel. In various embodiments, processor 202 is configured to: generate a set of channel state information reports based on the channel state information report configuration information, wherein each channel state information report in the set of channel state information reports includes two parts; and report the set of channel state information reports to the network.

[0055] In various embodiments, receiver 212 is configured to receive channel state information report configuration information, wherein the channel state information report configuration information includes: information indicating one or more channel state information reference signal resource configurations associated with at least one non-zero power channel state information reference signal resource set for channel measurement; and information indicating that channel state information report configurations corresponding to a plurality of points are used, wherein the plurality of points are associated with a major group of points or a minor group of points. In various embodiments, processor 202 is configured to: perform channel measurements using at least one non-zero power channel state information reference signal resource set; and generate a set of channel state information reports based on the channel state information report configuration information.

[0056] 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 transmitters 210 and receivers 212 may be of any suitable type. In one embodiment, the transmitters 210 and receivers 212 may be part of a transceiver.

[0057] Figure 3An embodiment of a device 300 that can be used for channel state information reporting is depicted. Device 300 includes one embodiment of a network unit 104. Furthermore, 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. It will be understood that the processor 302, memory 304, input device 306, display 308, transmitter 310, and receiver 312 may be substantially similar to the processor 202, memory 204, input device 206, display 208, transmitter 210, and receiver 212 of remote unit 102, respectively.

[0058] In various embodiments, such as for a new radio (“NR”), multiple transmit and receive points (“TRPs”), or multiple antenna panels within a TRP, communication with a single user equipment (“UE”) can be simultaneous to enhance coverage, throughput, and / or reliability. In some embodiments, such as for a Type II codebook with high resolution, the number of precompiled matrix indicator (“PMI”) bits fed back from the UE in the gNB via uplink control information (“UCI”) can be very large (e.g., >1000 bits at large bandwidths), even for single-point transmissions. In some embodiments, reducing the number of PMI feedback bits per report can improve efficiency.

[0059] In some embodiments, multiple-input multiple-output (“MIMO”) enhancements in NR may include multiple TRPs and multiple panel transmissions. In such embodiments, multiple TRP transmissions can improve the spectral efficiency, reliability, and / or robustness of the connection and can be used for both ideal and non-ideal backhaul.

[0060] In some embodiments, noncoherent joint transmission (“NCJT”) can be used to increase spectral efficiency by employing multiple TRPs. Unlike coherent joint transmission, which uses tight synchronization between TRPs and high channel state information (“CSI”) accuracy for precoding design, NCJT requires each TRP to transmit different layers of the same codeword (e.g., a single scheduled downlink control information (“DCI”) – two physical downlink shared channel (“PDSCH”) transmissions) or layers corresponding to a single codeword (e.g., two scheduled DCIs – two PDSCH transmissions).

[0061] In various embodiments, up to two TRPs can be used for joint transmission. In such embodiments, the UE can be served by multiple TRPs forming a coordination cluster (e.g., possibly connected to a central processing unit).

[0062] In some embodiments, the UE can be dynamically scheduled to be served by one of multiple TRPs in the cluster. In some embodiments, the network can select two TRPs to perform joint transmission. In various embodiments, the UE can report the CSI information required by the network to help it determine a multi-TRP downlink transmission scheme.

[0063] In some embodiments, the number of transport hypotheses increases exponentially with the number of TRPs in the coordination cluster. For example, for 4 TRPs, you might have 10 transport hypotheses: (TRP 1), (TRP 2), (TRP 3), (TRP 4), (TRP 1, TRP 2), (TRP 1, TRP 3), (TRP 1, TRP 4), (TRP 2, TRP 3), (TRP 2, TRP 4), and (TRP 3, TRP 4). The overhead from reporting can increase dramatically with the size of the coordination cluster.

[0064] In various embodiments, the uplink transmission resources on which CSI reports are transmitted may be insufficient, and partial CSI omissions may be used. In some embodiments, CSI reports may be prioritized based on: 1) time-domain behavior and physical channel, wherein more dynamic reports take precedence over fewer dynamic reports and the physical uplink shared channel (“PUSCH”) takes precedence over the physical uplink control channel (“PUCCH”); 2) CSI content, wherein beam reports (e.g., Layer 1 Reference Signal Received Power (“L1-RSRP”) reports) take precedence over regular CSI reports; 3) the serving cell corresponding to the CSI (e.g., via carrier aggregation (“CA”) operation) – CSIs corresponding to the primary cell (“PCell”) take precedence over CSIs corresponding to the secondary cells (“Scells”); and 4) the report configuration identifier (e.g., reportConfigID). In such embodiments, prioritization may not take into account that some multi-TRP NCJT transmission assumptions measured by the UE may result in low spectral efficiency performance and may be given lower priority.

[0065] For the purpose of multi-TRP NCJT PDSCH transmission, certain embodiments described herein enable the UE to: 1) reduce CSI reporting overhead without degrading performance; and / or 2) modify some CSI omission priorities to favor multi-TRP transmission assumptions with higher spectral efficiency.

[0066] In some embodiments, intelligent technologies for CSI feedback reporting may be used to enable different reports corresponding to different transmission configurations to be co-designed to reduce the overall CSI feedback overhead for multi-TRP and / or panel transmissions.

[0067] In various embodiments, if the gNB is equipped with a two-dimensional (“2D”) antenna array having N1 and N2 antenna ports polarized horizontally and vertically, respectively, and communication occurs on N3 PMI sub-bands, and each PMI sub-band includes a set of resource blocks, and each resource block includes a set of subcarriers. In such embodiments, 2N1N2 CSI-RS ports can be used to enable high-resolution downlink (“DL”) channel estimation for the NR type-II codebook. To reduce the uplink (“UL”) feedback overhead, discrete Fourier transform (“DFT”)-based CSI compression in the spatial domain can be applied to L dimensions per polarization, where L < N1N2. The magnitude and phase values of the linear combination coefficients of each sub-band can be fed back to the gNB as part of the CSI report. The 2N1N2 x N3 codebook for each layer can take the following form: w = w1w2, where W1 is a 2N1N2 x 2L block diagonal matrix with two identical diagonal blocks (L < N1N2), for example and B is an N1N2x L matrix having columns drawn from a 2D oversampled DFT matrix, as follows:

[0068]

[0069]

[0070]

[0071]

[0072] where the superscript T represents the matrix transpose operation. The O1 and O2 oversampling factors are assumed to be the 2D DFT matrix used to draw the matrix B. W1 is common across all layers. W2 is a 2L x 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 L selected columns of B, and the oversampling indices with O1O2 values, are reported. Note that W2 is independent for different layers.

[0073] In some embodiments, for the type-II codebook, frequency compression can be applied in combination with spatial compression. In addition to the spatial compression of the type-II codebook, inverse discrete Fourier transform (“IDFT”)-based CSI compression can also be applied in the frequency domain, where each beam of the frequency-domain precoding vector is transformed using an inverse DFT matrix applied 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 2N1N2 x N3 codebook for each layer can take the following form: where W1 can have the same design and reporting framework as in another embodiment of the type-II codebook. W fis an N3 x M matrix (M < N3) with columns of an N3 DFT matrix selected from a strict sampling size, as follows:

[0074]

[0075]

[0076] For W f , only the indices of M selected columns in an N3 DFT matrix of a predefined size can be reported. Thus, L and M represent the compressed equivalent spatial and frequency dimensions, respectively. Finally, the 2L x M matrix represents the linear combination coefficients ("LCC") of the spatial and frequency DFT basis vectors. Both are and W f and are independent for different layers. The magnitude and phase values of approximately β portion of the 2LM available coefficients are reported to the gNB as part of the CSI report (β < 1) (e.g., coefficients with zero magnitude can be indicated via a per-layer bitmap - since all coefficients reported within a layer can be normalized relative to the coefficient with the maximum magnitude (e.g., the strongest coefficient), the relative value of this coefficient is set to unity and no magnitude or phase information is explicitly reported for this coefficient - only the index of the strongest coefficient per layer is reported). Thus, for single-layer transmission, each layer can report the magnitude and phase values of up to coefficients (e.g., together with the indices of the selected L, M DFT vectors), resulting in a significant reduction in the CSI report size compared to reporting the information of 2N1N2xN3-1 coefficients.

[0077] In various embodiments, such as for a type-II port selection codebook, only K (e.g., where K ≤ 2N1N2) beamformed CSI-RS ports can be used for DL transmission to reduce complexity. The AKxN3 codebook matrix for each layer can take the following form: Here, and W3 follow the same structure as certain embodiments of the type-II codebook and can be specific layers. W1 is a K x 2L block diagonal matrix with two identical diagonal blocks, for example, and E is a matrix whose columns are the standard unit vectors , as shown below,:

[0078]

[0079] where, is the standard unit vector with 1 at the i-th position. Here, d PS is an RRC parameter taking values {1, 2, 3, 4} under the condition that d PS ≤ min(K / 2, L), However m PS Value

[0080] It is also reported as part of the UL CSI feedback overhead. W1 is common across all layers.

[0081] For K=16, L=4 and d PS =1, corresponding to m PS The eight possible implementations of E = {0,1,…,7} are as follows:

[0082]

[0083] When d PS When = 2, it corresponds to m PS The four possible implementations of E = {0, 1, 2, 3} are as follows:

[0084]

[0085] When dPS = 3, the three possible implementations of E corresponding to mPS = {0, 1, 2} are as follows:

[0086]

[0087] When d PS When = 4, it corresponds to m PS The two possible implementations of E with the expression {0,1} are as follows:

[0088]

[0089] In conclusion, m PS Parameterize the position of the first 1 in the first column of E, and d PS This indicates that it corresponds to different m PS The value is shifted row by row.

[0090] In some embodiments, the NRI-type codebook may be a baseline codebook for NRs with multiple configurations. In various embodiments, the Type I codebook may be an embodiment of the NRII-type codebook, where for RI = 1, 2, L = 1, where phase coupling values ​​are reported for each subband, for example, W2 is 2 x N3, where the first row equals [1, 1, ..., 1], and the second row equals In some embodiments, φ0 = φ1… = φ, for example, broadband reporting. For RI > 2, different beams can be used for each pair of layers. In some embodiments, the NRI-type codebook can be depicted as a low-resolution version of the NRII-type codebook with spatial beam selection for each layer pair and phase-only combination.

[0091] In various embodiments, the codebook report can be partitioned into two parts based on the priority of the reported information. Each part can be encoded separately (e.g., part 1 may have a higher code rate). In some embodiments, the CSI report content includes: 1) Part 1: RI + CQI + total number of coefficients; and 2) Part 2: SD base indicator + FD base indicator / layer + bitmap and / or layer + coefficient amplitude information and / or layer + coefficient phase information and / or layer + strongest coefficient indicator and / or layer. Furthermore, part 2 CSI can be decomposed into sub-parts, each with a different priority (e.g., information with higher priority listed first). Such partitioning can enable dynamic reporting size of the codebook based on available resources in the uplink phase.

[0092] In some embodiments, the Type II codebook may be based on aperiodic CSI reports and reported only in the PUSCH via DCI triggering (e.g., one exception). The Type I codebook may be based on periodic CSI reports (e.g., PUCCH), semi-persistent CSI reports (e.g., PUSCH or PUCCH), or aperiodic reports (e.g., PUSCH). Table 1 illustrates one embodiment of prioritization.

[0093] Table 1

[0094]

[0095] In some embodiments, N Rep The priority of a CSI report can be based on: 1) a CSI report corresponding to a CSI report configuration of a cell may have a higher priority than another CSI report corresponding to a different CSI report configuration of the same cell; 2) a CSI report for a cell may have a higher priority than other CSI reports for another cell; 3) a CSI report may have a higher priority based on its content (e.g., a CSI report carrying L1-RSRP information has a higher priority); and / or 4) a CSI report may have a higher priority based on its type (e.g., whether the CSI report is aperiodic, semi-persistent, or periodic) and whether the report is sent via PUSCH or PUCCH.

[0096] In various embodiments, CSI reports can be prioritized as follows, wherein CSI reports with lower IDs have higher priority:

[0097] Pri iCSI (y, k, c, s) = 2·N cells ·M s ·y+N cells ·M s ·k+M s·c+s, where s: CSI report configuration index, M s : Maximum number of CSI report configurations, c: Cell index, N cells : Number of serving cells, k: 0 for carrying L1-RSRP or Layer 1 signal-to-interference and noise ratio (“L1-SINR”) CSI reports, otherwise 1, y: 0 for non-periodic reports, 1 for semi-persistent reports on PUSCH, 2 for semi-persistent reports on PUCCH, 3 for periodic reports.

[0098] In some embodiments, for multi-TRP NCJT transmissions, two implementations can be used: 1) sending a downlink scheduling assignment from one TRP that schedules two PDSCH transmissions from the two TRPs respectively—only one transport block (“TB”) can be transmitted, its layer divided across the two scheduling PDSCHs; and 2) sending two downlink scheduling assignments from each TRP with one scheduling DCI. Each DCI can schedule PDSCH transmissions from the corresponding TRP. One or more TBs can be transmitted from each TRP based on the rank of the channel from each TRP.

[0099] In some embodiments, the UE can use the CSI framework to report network CSI information. From the UE's perspective, CSI reporting may be independent of the downlink NCJT scheme used. The triggering mechanism between reporting settings and resource settings can be summarized in Table 2.

[0100] Table 2: Triggering Mechanisms Between Report Settings and Resource Settings

[0101]

[0102] In various embodiments: all associated resource settings for CSI reporting settings may need to have time-domain behavior; once configured by RRC signaling, periodic CSI-RS and / or interference management (“IM”) resources and CSI reports may be assumed to exist and be active; non-periodic and semi-persistent CSI-RS and / or IM resources and CSI reports can be explicitly triggered or activated; non-periodic CSI-RS and / or IM resources and non-periodic CSI reports are triggered jointly by transmitting DCI format 0-1; and / or semi-persistent CSI-RS and / or IM resources and semi-persistent CSI reports can be activated independently.

[0103] In some embodiments, such as for multi-TRP NCJT, aperiodic CSI reports may be triggered to inform the network about channel conditions for each transmission assumption, since using periodic CSI-RS for TRPs in the coordination cluster would incur significant overhead. In various embodiments, aperiodic CSI-RS and / or IM resources, along with aperiodic CSI reports, can be jointly triggered by transmitting DCI format 0_1. DCI format 0_1 ​​contains a CSI request field (e.g., 0 to 6 bits). The non-zero request field points to a so-called aperiodic triggering state configured by RRC. An aperiodic triggering state can be defined as a list of up to 16 aperiodic CSI report settings identified by a CSI report setting ID, which the UE calculates for the CSI report setting ID and transmits on a scheduled PUSCH transmission.

[0104] Figure 4 Figure 400 illustrates an embodiment of an aperiodic trigger state that defines a list of CSI report settings. Specifically, Figure 400 includes DCI format 0_1 ​​402, CSI request code point 404, and aperiodic trigger state 2 406. Furthermore, aperiodic trigger state 2 includes ReportConfigID x 408, ReportConfigID y 410, and ReportConfigID z 412.

[0105] In some embodiments, if the CSI reporting settings are linked to aperiodic resource settings (e.g., may include multiple resource sets), the aperiodic NZP CSI-RS resource set for channel measurements, the aperiodic CSI-IM resource set, and / or the aperiodic NZP CSI-RS resource set for the IM for a given CSI reporting setting may be included in the aperiodic trigger state definition. For aperiodic NZP CSI-RS, a quasi-co-located (“QCL”) source may be configured in the aperiodic trigger state. The UE may assume that the resources used to calculate channels and interference can be processed using the same spatial filter (e.g., quasi-co-located relative to “QCL-TypeD”).

[0106] Figure 5 This is a code sample 500 of an embodiment of the illustrated process, through which the state indicator resource set and QCL information are triggered non-periodically.

[0107] Figure 6 This is a code sample 600 of an embodiment of the illustrated RRC configuration, which includes a non-zero power channel state information reference signal (“NZP-CSI-RS”) resource 602 and a CSI-IM resource 604.

[0108] Table 3 shows the uplink channels for CSI reporting based on the CSI codebook type.

[0109] Table 3: Uplink Channels for CSI Reporting Based on CSI Codebook Type

[0110]

[0111] In some embodiments, for non-periodic CSI reporting, PUSCH-based reporting can be divided into two CSI parts: CSI Part 1 and CSI Part 2. This may be because the size of the CSI payload varies significantly, and therefore, worst-case UCI payload size design could result in large overhead.

[0112] In various embodiments, CSI section 1 has a fixed payload size (e.g., can be decoded by gNB without prior information) and may include: 1) RI (if reported), CRI (if reported) and CQI for the first codeword; and / or 2) the number of non-zero wideband amplitude coefficients per layer for type II CSI feedback on PUSCH.

[0113] In some embodiments, CSI section 2 has a variable payload size that can be derived from the CSI parameters in CSI section 1, and may include PMI and CQI for the second codeword if RI > 4.

[0114] In one example, if the non-periodic trigger state indicated by DCI format 0_1 ​​defines three reporting settings x, y, and z, then the non-periodic CSI report in CSI section 2 can be as follows: Figure 7 The sorting is shown in the figure.

[0115] Figure 7This is a schematic block diagram 700 illustrating an embodiment of partial CSI omissions for PUSCH-based CSI. Diagram 700 includes ReportConfigID x 702, ReportConfigID y 704, and ReportConfigID z 706. Furthermore, Diagram 700 includes a first report 708 corresponding to ReportConfigID x 702 (e.g., the number of requests to be reported), a second report 710 corresponding to ReportConfigID y 704 (e.g., the number of requests to be reported), and a third report 712 corresponding to ReportConfigID z 706 (e.g., the number of requests to be reported). Each of the first report 708, second report 710, and third report 712 includes CSI portion 1 720 and CSI portion 2 722. The order 723 of CSI portions 2 across reports is CSI portion 2 of the first report 724, CSI portion 2 of the second report 726, and CSI portion 2 of the third report 728. In addition, CSI Part 2 reports can generate Report 1WB CSI 734, Report 2WB CSI 736, Report 3WB CSI 438, Report 1 Even SB CSI 740, Report 1 Odd SB CSI 742, Report 2 Even SB CSI 744, Report 2 Odd SB CSI 746, Report 3 Even SB CSI 748, and Report 3 Odd SB CSI 750.

[0116] In various embodiments, CSI reports can be prioritized based on: 1) time-domain behavior and physical channel, where more dynamic reports take precedence over fewer dynamic reports and PUSCH takes precedence over PUCCH; 2) the CSI content of beam reports (e.g., L1-RSRP reports) takes precedence over regular CSI reports; 3) the serving cell corresponding to the CSI (e.g., for CA operation) – CSIs corresponding to PCells take precedence over CSIs corresponding to Scells; and / or 4) the report configuration identifier (e.g., reportConfigID). In such embodiments, prioritization may not take into account that some multi-TRP NCJT transmission assumptions measured by the UE may result in low spectral efficiency performance and may be given lower priority.

[0117] In various embodiments, one or more elements or features from different embodiments (e.g., CSI measurement, feedback generation, and / or reporting) can be combined, which can reduce overall CSI feedback overhead.

[0118] In some embodiments, the following assumptions may be used: 1) The concept of “TRP” generally includes at least one of TRP, panel, communication associated with a control resource set (“CORESET”) pool, and / or communication associated with a TCI state from a transport configuration including at least two TCI states; 2) The codebook type used is arbitrary – different codebook types (e.g., Type I and Type II codebooks) may be used flexibly unless otherwise stated; 3) Non-periodic CSI reporting is supported at least on the PUSCH – other CSI reporting configuration types, such as semi-persistent CSI reporting on the PUSCH, may also be used; 4) At least multiple TRPs and / or panels with a single DCI may be used – multiple TRPs and / or panels with multiple DCIs may also be used; and / or 5) At least multiple TRPs and / or panels with spatial division multiplexing (“SDM”) may be used.

[0119] In the first embodiment, the network may indicate to the UE the need for multiple TRPs and / or panel CSI feedback via: 1) introducing new Radio Resource Control (“RRC”) parameters (e.g., NTRP or CSIGroup) – based on which multiple CSI reports, CSI sub-reports, or CSI components may exist for a single CSI report configuration – this parameter may be incorporated into the CSI report priority ordering; 2) introducing new report quantities (e.g., for CSI reports involving mTRPs) – each report may correspond to a report setting; 3) multiple TRPs may be implied from QCL relationships on RS (e.g., aperiodic CSI-RS); 4) involving One or more code points for different DCI trigger states can be assigned to a multi-TRP setting for CSI feedback—each state (e.g., including one or more CSI reporting settings) can be triggered by the network and configured RRC; 5) multi-TRP can be implied from the higher-level parameter CodebookType; 6) multi-TRP can be implied from the higher-level parameter CodebookConfig; and / or 7) a new RRC parameter groupBasedCSIReporting (e.g., in CSI reporting configuration) can be introduced—this parameter can enable multi-TRP and / or panel CSI feedback with CSI reporting, which includes a set of N g Individual CSI reports, sub-CSI reports, or CSI components.

[0120] In various embodiments, the following CSI report structure is assumed, wherein without loss of generality, all CSI reports are either aperiodic (y = 0) and do not carry L1-RSRP or L1-SINR info (k = 1), N TRP =3 and M s =2. For TRP t, the corresponding rank v is reported. cThe codebook information, wherein each TRP t layer is partitioned into v' t and v” t The two groups of layers, where v t =v' t +v” t CSI Report 1: Includes information corresponding to the first v'1 layer expected to be used for TRP 1. CSI Report 2: Includes information corresponding to the last v”1 layer expected to be used for TRP 1. CSI Report 3: Includes information corresponding to the first v'2 layer expected to be used for TRP 2. CSI Report 4: Includes information corresponding to the last v”2 layer expected to be used for TRP 2. CSI Report 5: Includes information corresponding to the first v'3 layer expected to be used for TRP 3. CSI Report 6: Includes information corresponding to the last v”3 layer expected to be used for TRP 3.

[0121] In the second embodiment, the following subset of CSI report assumptions can be considered: 1) a single TRP transmission, wherein the codebook at TRP t is based on a CSI report with indices 2(t-1)+1 and 2(t-1)+2; and 2) involving TRP t and The joint transmission, the codebook at TRP t may be based on a CSI report with index 2(t-1)+1, while in TRP The codebook at that location will be based on an index. The CSI report, in which It is possible that the order of the contents in the CSI reports with indices 2(t-1)+1 and 2(t-1)+2 may be interchanged.

[0122] In some embodiments, each CSI report can be triggered via a CSI report setting. Each CSI report setting has a corresponding set of one or more CSI resource settings. Because a CSI report with index 2(t-1)+1 involves multiple TRP / panel transmissions, the codebook parameters may depend on interference from other TRPs associated with the joint transmission. Therefore, a CSI report setting corresponding to a given CSI report with index 2(t-1)+1 can be configured with multiple CSI resource settings, where a first CSI resource setting may indicate a non-zero power (“NZP”) CSI-RS resource set for channel measurements, and subsequent CSI resource settings may indicate NZP CSI-RS and / or CSI-IM for interference measurements. The information in the corresponding CSI report may be susceptible to inter-layer interference from different TRPs and can be designed based on both channel and interference measurements. A CSI report with index 2(t-1)+2 can only be triggered in the case of a single TRP transmission. Therefore, in cases where the report may only measure the channel, triggering a single CSI resource setting for the corresponding CSI report setting may be sufficient.

[0123] In the third embodiment, different CSI resource settings can be defined according to different CSI report settings as follows: 1) For a CSI report setting corresponding to a CSI report with index 2(t-1)+1 (e.g., including a PMI for the first set of layers of TRP t that can be triggered by multiple TRP transmissions), more than one CSI resource setting can be triggered; and 2) For a CSI report setting corresponding to a CSI report with index 2(t-1)+2 (e.g., including a PMI for the last set of layers of TRP t that can be triggered for a single TRP transmission), more than one CSI resource setting can be triggered.

[0124] In various embodiments, each codebook may contain a single CSI report. In one example, if the CSI report is restructured as follows, where, without loss of generality, all CSI reports are either aperiodic (y = 0) and do not carry L1-RSRP or L1-SINR information (k = 1), N cells =3 and M=2. The report corresponds to rank v. c The codebook contains TRP t information, where each TRP t layer is partitioned into v' t and v” t The two groups of layers, where v t =v' t +v” t CSI report t: Information corresponding to TRP t. CSI report section 1. Layer-common info + three triplet values ​​(v' t ,v”t ,v t The two indicators in ) . CSI report section 2, group 0. The remainder of the layer public information. CSI report section 2, group 1. With layer v' t Related information. CSI report section 2, group 2. With layer v” t Related information. In some embodiments, if layer decomposition is predefined, for example, Then it is not necessary to require the three triplet values ​​(v') t ,v” t ,v t The two layer indicators in ) can be used. Additionally, indicators for different group sizes from CSI Report Section 2 can be used.

[0125] In the fourth embodiment, for multi-TRP transmissions, a report per TRP can be defined, wherein: 1) the PMI included in each layer of information in CSI Part 2 Group 1 can be based on one or more of NZP CSI-RS for CMR, NZP CSI-RS for Interference Measurement Resources (“IMR”), and CSI-IM; 2) the PMI included in each layer of information in CSI Part 2 Group 2 can be based on one or more of NZP CSI-RS and CSI-IM for CMR. As will be understood, the order of the contents in CSI Part 2 Group 1 and CSI Part 2 Group 2 is not excluded.

[0126] In some embodiments, a codeword-to-TRP mapping may exist. In various embodiments, under a single DCI with multiple TRPs, complications may arise when joint transmissions between two TRPs t, t* will occupy more than one codeword. In such embodiments, it may be advantageous to transmit transmitted sequences corresponding to layers from one TRP using dedicated codewords, where layers corresponding to another TRP are transmitted using different codewords. This can be applied to all layers corresponding to a TRP, or to the first and / or last set of layers for each TRP. In some embodiments, signal sequences corresponding to different layers are multiplexed into a single codeword, provided the total number of layers does not exceed 4. Whenever the number of layers exceeds 4 (e.g., but not exceeding 8 layers), two codewords are used, where the first codeword is assigned. One layer, and the remaining Each layer is assigned by the second codeword, where v all This is the total number of layers [6]. Therefore, the difference between the number of layers processed for each codeword is no more than one. In view of this, in order to facilitate one-to-one codeword to TRP mapping, at least for the first set of layers for each TRP t, the fifth embodiment can be used.

[0127] In the fifth embodiment, for multi-TRP transmissions with a single DCI, the number of layers per TRP may be limited, such that:

[0128] Where c = 0 or 1.

[0129] Constraints can be applied to the first set of layers, the second set of layers, or the total number of layers per TRP t. Furthermore, the number of layers in the first set of layers within each TRP may be limited, such that v' t ≤δ, where δ is the maximum number of layers multiplexed into a codeword, for example, δ=4.

[0130] In various embodiments, there may be variations in the CSI priority ordering. In some embodiments, parameters may be used for the CSI report index in the PUSCH, which represents the number of TRPs per cell or the number of CSI report groups, as found in the sixth embodiment.

[0131] In the sixth embodiment, there may be a change in the priority order of CSI reports:

[0132] Pri iCSI (y, k, c, g, s) = 2·N cells ·N g ·M s ·y+N cells ·N g ·M s ·k+N g ·M s ·c+M s ·g+s, where N g This represents the total number of CSI reporting groups or TRPs per cell, and g takes values ​​of 0, 1, ..., N. g The index corresponding to -1. In some embodiments, the priority function can be as follows: Pri iCSI (y, k, c, s, g) = 2·N cells ·M s ·N g ·y+N cells ·M s ·N g ·k+M s ·N g ·c+N g •s+g. It should be noted that parameter names other than the number of CSI report groups or the number of TRPs per cell are not excluded. In various embodiments, CSI reports may include parameters with values ​​of 0, 1, ..., N. g A set of N corresponding to the index of -1 g Individual CSI reports or CSI components.

[0133] In some embodiments, there may be a joint design across CSI reports. In one embodiment, a CSI report may be configured with a codebook type belonging to Type II. In such an embodiment, layer public information related to the codebook t of the TRP may be placed in CSI report 2(t-1)+1.

[0134] In the seventh embodiment, the layer common information of the codebook corresponding to TRP t (e.g., indicators without layer subscripts, such as selected spatial beam index or tap window information) can be placed only in CSI report 2(t-1)+1.

[0135] In various embodiments, layer common information related to the codebooks of different TRPs with joint transmissions may be placed only in CSI report 1. In some embodiments, a beam bitmap bt of length 2L indicating the subset of spatial beams selected for each TRP t may be included in a CSI report with index 2(t-1)+1, where nnz(bt) = Lt, and nnz(x) indicates the number of entries with non-zero values ​​in any vector x. L1+L2+L3≥2L (e.g., different TRPs may reuse the same beams). Thus, the number of beams per cell c can be reduced to Lt≤2L and the CSI report size can be reduced thereby (e.g., fewer bits corresponding to the coefficient bitmaps for each layer can be reported). In some embodiments, the bitmap may be used to indicate the subset of selected beams for each CSI report with indices 2(t-1)+1 and 2(t-1)+2 (e.g., for each bitmap reported). As will be understood, other methods of reporting subsets of selected beams are not excluded (e.g., reporting combined values ​​instead of bitmaps).

[0136] In the eighth embodiment, for a Type II codebook or any derivative thereof (e.g., eType-II codebook), a Type II port selection codebook, or an eType-II port selection codebook, only the spatial beam selected by TRP t for CSI report 2(t-1)+1 can be reported. In such an embodiment, a beam bitmap bt of length 2L in CSI report 2(t-1)+1 can be reported, where nnz(bt) = Lt, and different TRPs can reuse the same beam. Only the coefficients of the Lt beam corresponding to TRP t can be reported.

[0137] In the ninth embodiment, for a Type II codebook or any derivative thereof (e.g., eType-II codebook), a Type II port selection codebook, or an eType-II port selection codebook, a bitmap for one or more CSI reports 2(t-1)+1 and 2(t-1)+2 for TRP t can be reported, wherein the bitmap indicates the index of the space beam used in the CSI report.

[0138] In some embodiments, one issue with CQI reporting is handling different CSI reporting configurations. For ease of explanation, for any TRP t, t*, v't + v't* ≤ 4, and for all TRPs, vt ≤ 4 (e.g., using a single codebook even over joint transmissions). In some embodiments, wideband (“WB”) CQI may be used.

[0139] In various embodiments, the WB CQI value q't (e.g., 4 bits) can be reported in CSI report 2(t-1)+1, indicating the CQI for TRP t transmission with rank v't. In some embodiments, the differential WB CQI value q”t (e.g., 2 bits) can be reported in CSI report 2(t-1)+2, indicating the CQI index offset for a single transmission of TRP t with full rank vt, where the offset is relative to toq't. In some embodiments, the differential WB CQI value q't,t* (e.g., 2 bits) can be reported in CSI report 2(t-1)+1, CSI report 2(t*-1)+1, or both, indicating the CQI index offsets of two TRPs t, t* with ranks v't and v't* respectively under joint transmission. The offset is relative to any function qJTt,t* = f(q't,,q't*), for example, f(a,,b) = max(a,b) or or

[0140] In some embodiments, the subband (“SB”) CQI value of each CQI subband index w can be reported in a similar manner (e.g., reporting the subband differential CQI value p”t(w) relative to the function f 2(q't,q”t) for the full-rank transmission vt of TRP t to be reported in CSI report 2(t-1)+2. In some embodiments, the subband differential CQI value pJTt,t*(w) can be defined relative to qJTt,t* to be reported in CSI report 2(t-1)+1, CSI report 2(t*-1)+1, or both.

[0141] In the tenth embodiment, WB CQI q't and differential CQI q”t, qJTt,t*, and p”t(w) and pJTt,t*(w) can be reported across CSI reports.

[0142] In various embodiments, if there are multiple DCIs and multiple TRPs where vt ≤ 4, the codeword-to-TRP mapping can be one-to-one (e.g., the layer corresponding to TRP t is exclusively mapped to a codeword with a corresponding WB CQI level). As can be understood, WB differential CQI used for joint transmission can be reported to address SINR degradation (e.g., and there may be CQI index decline). If so, qJTt,t* ≠ qJTt*,t, where qJTt,t* indicates the CQI level offset of the codeword associated with TRP t due to interference from TRP t*. Therefore, qJTt,t* can be reported in CSI report 2(t-1)+1, and thus qJTt*,t can be reported in CSI report 2(t*-1)+1. The same applies to pJTt,t*(w) and pJTt*,t(w). As can be understood, as long as the mapping from codeword to TRP is one-to-one, the same behavior applies even under a single DCI with multiple TRPs.

[0143] In the eleventh embodiment, for multiple DCI multiple TRPs or in a single DCI multiple TRP with a one-to-one codeword-to-TRP mapping, qJTt,t*≠qJTt*,t, and pJTt,t*(w)≠pJTt*,t(w), and therefore qJTt,t*,pJTt,t*(w) may need to be reported in CSI report 2(t-1)+1, so that qJTt*,t,pJTt*,t(w) can be reported in CSI report 2(t*-1)+1.

[0144] As can be understood, in order to incorporate the WB differential CQI, a type of CQI format indicator can be used to accommodate the differential WB CQI value (e.g., an additional value for parameter cqi-FormatIndicator—cqi-FormatIndicator="DiffwidebandCQI"—can be introduced). In some embodiments, the additional CQI format indicator can be used to reflect both differential WB and SB reports (e.g., cqi-FormatIndicator="DiffsubbandCQI").

[0145] In the twelfth embodiment, in addition to the current values ​​“widebandCQI” and “subbandCQI”, the additional value for the parameter cqi-FormatIndicator can be used to adapt to WB differential CQI reporting (e.g., cqi-FormatIndicator = “DiffwidebandCQI”) and possible SB differential CQI reporting (e.g., cqi-FormatIndicator = “DiffsubbandCQI”).

[0146] In some embodiments, hypothesis reduction may be possible. Such embodiments can help improve the efficiency of CSI reporting by using CQI information to reduce the aggregate size of CSI reports generated by multiple TRP transmissions. Given that the UE has sufficient knowledge of the channels from all TRPs, it may be in a better position to select the best hypothesis (e.g., the best transmission scheme based on some metric). However, due to other network-side considerations, the UE selecting the best hypothesis alone may be detrimental to the network. For example, one way to reduce the overall CSI feedback overhead is for the UE to report only CSI feedback related to a subset of the hypotheses. For example, suppose the UE might only report CSI feedback related to a single transmission with TRP 1, or a joint transmission between TRPs 1 and 2, or a joint transmission between TRPs 2 and 3 (e.g., a total of 3 hypotheses). If so, the UE might only report CSI reports 1, 2, 3, and 5. The UE might then have to report the selected hypotheses to the network to avoid ambiguity. While this approach can reduce the overall CSI feedback overhead by about one-third of its size, it loses the opportunity for the network to make hypothesis selections based on network traffic or other resource allocation considerations. This can be called "hard channel hypothesis reduction".

[0147] In various embodiments, a balance can be struck between hard hypothesis reduction and full CSI feedback reporting. In such embodiments, explicit signaling from the UE to the network for selected hypotheses may not be necessary. This can be referred to as "soft channel hypothesis reduction" and can be based on a subset of CSI reports that only omit unfavorable hypotheses (based on reported CQI values). For example, this embodiment can be as follows: 1) CSI reports are divided into two groups based on CQI values ​​corresponding to different assumptions—the threshold may depend on other parameters (e.g., the reported rank of each report); 2) CSI reports that meet the threshold test are reported in full; 3) CSI reports that do not meet the threshold test may be partially reported—for example, a) only CSI part 1 of the CSI report is fed back; b) CSI part 1 + CSI part 2, and group 0 of the CSI report are fed back; c) CSI part 1 + CSI part 2, group 0 + CSI part 2, and group 1 of the CSI report are fed back; and 4) assuming the existence of K CSI reports corresponding to the H channel and / or interference assumptions—the classification of CSI reports in the two groups can be based on one (or a combination of) the following: a) Each CSI report was fully responded to, however A CSI report is partially fed back, where 0≤α≤1 is fixed and set via rules or configured RRC; b) consists of channel and / or interference assumptions. The CSI report is fully fed back, however the remainder of the CSI report is partially fed back, where 0≤β≤1 is fixed and set by rules or configuration RRC; c) CSI reports for channel and / or interference assumptions that constitute their effective WB CQI index are greater than or equal to the threshold γ are fully fed back, however the remainder of the CSI report is partially fed back. Note that the ceiling operator... It can be used Alternatively, use the round<·> operator.

[0148] In some embodiments, CSI report classification may be divided into two groups and may use additional fields corresponding to the CSI trigger state (e.g., CSIAperiodicTriggerState), implicitly using predefined rules regarding the CSI report ID, or indicated by the network via the introduction of higher-level parameters (e.g., RRC parameters). Other methods for implementing CSI report classification by the network are not excluded in various embodiments.

[0149] In the thirteenth embodiment, K CSI reports can be classified into two potentially disjoint groups, each of size K1 and K2, where K1 + K2 = K. CSI reports belonging to the first group are fully reported, while CSI reports belonging to the second group are partially reported or completely omitted. CSI report classification can be UE-triggered, based on the reported rank of each CSI report, the value of the reported CQI index, or both. In some embodiments, CSI report classification can be network-triggered, based on the CSI triggering status reported to the user, the CSI report ID, or both. As will be understood, other bases that may contribute to the CSI report classification process are not excluded.

[0150] In some embodiments, common rotation parameters may exist. In various embodiments, the reported CQI value may correspond to precoding matrices (e.g., codebooks) of different layers in more than one CSI report. A series of reports can be generated such that a report can be combined with only one previous report. However, a report can be combined with any subsequent CSI report. Consider the following example: given a series of CSI reports, if only the following CSI report combination pairs (1,2), (2,3), (1,4), (2,5), (3,6) are allowed, we can see that CSI report 2 or CSI report 3 may be combined with only one previous report (e.g., CSI report 1 and CSI report 2, respectively). However, CSI report 2 can be combined with more than one subsequent report (e.g., CSI report 3 and CSI report 5). In this case, assuming the report is only combined with previous CSI reports in the list and its corresponding precoding vector is optimized accordingly, the UE first searches for the precoding matrix of a given CSI report. It should be noted that, assuming the corresponding layer of the first report may not be combined with any layer corresponding to another report, the first report has no previous report and therefore it optimizes the corresponding vector of the precoding matrix.

[0151] Figure 8 This is a schematic block diagram 800 illustrating an embodiment in which two TRPs jointly transmit data to a user equipment using a single codeword. Specifically, schematic block diagram 800 includes a first TRP 802, a second TRP 804, and a UE 806. Precoding matrix P A1 808, P A2 810, P r A1 812 and P r A2 814 was launched as shown in the figure.

[0152] Specifically, the precoding matrix P is indicated in CSI Report 1. A1 It is not bound by the precoding matrix of any other report. The precoding matrix P in CSI Report 3... A2 It can be designed to be as close as possible to P A1 The constraint of "orthogonality" can lead to a qualitative difference between the layers corresponding to CSI Report 1 and CSI Report 3. If layers across the two reports are multiplexed into a single codeword, performance degradation may occur. To minimize the qualitative difference in performance between the layers corresponding to the two CSI reports and to maximize the CQI level under joint transmission, a rotation transformation Λ is preferred, such that... and Where Λ is a diagonal matrix of the form .

[0153]

[0154] Where kron(A,B) is the Kronecker product of two matrices A and B, exp(α) = e α and It is a diagonal matrix with diagonal elements a1, ..., a2. n This might be an allusion to P. A2 During the reporting period, optimal rotation factors θ1 and θ2 may be reported. This θ1 and θ2 report may resemble tol i and m i However, they have potentially different value ranges. The same rotation factor can be applied to all layers of this CSI report as well as previous CSI reports it is combined with, regardless of whether the CSI report belongs to the same TRP or a different TRP. Because there is only one previous report, a given CSI report can be combined with it, and there is no confusion about what rotation factor to use for any joint transport combination.

[0155] As can be understood, if two CSI reports belong to the same TRP, this rotation can be implied in one way that the rotation factor in one CSI report overrides the rotation factor in the previous CSI report (e.g., for the eType-II codebook). For example, field i in CSI report 2(t-1)+2 1,1 It can cover field i corresponding to CSI report 2(t-1)+2 1,1 As can be understood, this also applies to the beam indicator field i. 1，2 Furthermore, the possibility of covering the rotation factor field or beam indicator field across CSI reports corresponding to different TRPs cannot be ruled out.

[0156] In the fourteenth embodiment, the reported value of a parameter corresponding to one CSI report can be changed based on the reported value of another CSI report. For example, a rotation factor, spatial beamset index, or both reported in one CSI report can be applied to the codebook corresponding to another CSI report (e.g., a CSI report with a smaller index value). In such an embodiment, this can be done by further rotating a subset of the codebook parameters in one CSI report based on the rotation factor and / or spatial beamset index reported in the other CSI report, or by overlaying the rotation factor and / or spatial beamset index in one CSI report with the rotation factor reported in the other CSI report.

[0157] In some embodiments, concise CSI report multiplexing may exist for the two TRP PDSCH transmissions of the NCJT. In various embodiments, the UE receives an uplink scheduling DCI with a non-back-off format of 0-1. The DCI indicates the uplink time and frequency resources on which the device should transmit the PUSCH. The DCI contains a non-zero CSI request (e.g., 0-6 bits) for requesting a non-periodic CSI report on the PUSCH.

[0158] In various embodiments, the CSI request is directed to a non-periodic triggering state "m" configured with the RRC parameter enable_depend_reporting set to true. In such an embodiment, the non-periodic triggering state m contains "N" CSI-ReportConfigs, whose reportConfigIds are respectively m1, m2, ..., m N The NZP-CSI-RS resource set of CSI-ReportConfig m1 is used for QCL channel measurements (e.g., indicating the primary transmission TRP) with a PDCCH carrying DCI format 0_1. This TCI state is represented by Q1. If enable_depend_reporting = true, the CSI report associated with CSI-ReportConfig m1 will be represented as Report 1. Report 1 has the highest priority among the N reports. ReportConfigm2,...,m N The NZP-CSI-RS resource set is configured for channel measurements, and its TCI states are Q2, ..., Q. N ≠Q1 indicates, for example (indicating that the TRP can potentially be used in both TRP NCJTs together with the main TRP). The corresponding CSI reports will be indicated as Report 2, ..., Report N.

[0159] In some embodiments, each report carries rank information (“RI”), precoder information (“PMI”), and a sequence number (r) for each report i. i P i CQI i The channel quality indicator (“CQI”) is represented by ). Report 1 is calculated under the following assumption: Report 1 is calculated under assumption H1: single DCI single PDSCH transmission with TCI code points having a single TCI state Q1. With enable_depend_reporting = true, the UE calculates Report 2,…,N under the following assumptions. Report i (i = 2,…,N) under assumption H1… i The following calculation is performed: (Q1, Q...) iA single DCI NCJT transmission. Furthermore, the NZP CSI-RS resource used for inter-layer interference measurements has QCL information set to Q1.

[0160] Because reports 2,...,N assume NCJT transmission, the UE reports (r2,...,r...) N )≤2 represents the number of layers transmitted per TB according to each TCI state. In the case of NCJT transmission, the sum of the reported UE ranks will be ≤4. P2, ..., P are calculated based on this assumption. N And CQI2, ..., CQI N For i = 2, ..., N, CSI reports i(r) i ,P i CQI i This can be interpreted as the rank r from each TRP. i Transmission, P i It is in the TRP state Q i In the case of the precoder used at TRP, and CQI i It is used to assume H i The expected modulation and compilation rate of the TB.

[0161] Finally, the UE sorts the transmission hypothesis (H) in descending order of spectral efficiency performance. i The priority of each report i (i = 2, ..., N) is determined by sorting the reports i (i = 2, ..., N) during reuse on the PUSCH resource. This priority reordering may override other priorities.

[0162] In some embodiments, the UE can obtain information from ReportConfig m1,m2,…,m N The transmission hypothesis H is implicitly determined in the channel measurement NZP-CSI-RS resource set and the QCL information of the corresponding CSI-RS rank constraint. i (i = 2, ..., N) (e.g., instead of using explicit RRC signaling). In some embodiments, r i and CQI i This can be interpreted as a difference relative to r1 and CQI1. In various embodiments, the non-precoded NZP-CSI-RS transmitted from the primary TRP can be combined with precoder information P1 for inter-layer interference measurement.

[0163] In some embodiments, the UE applies the transmission assumption (H) based on a predefined performance metric (e.g., L1-RSRP). iThe reports are sorted (i = 2, ..., N) to determine the priority rank of each report. In various embodiments, concise aperiodic CSI reporting on the PUSCH for multi-TRP NCJT transports can be enabled, where the number of transport hypotheses increases only linearly with the number of transport points.

[0164] In some embodiments, the UE first calculates CSI report 1 under the following transmission assumption: a single TRP transmission from a TRP having TCI state Q1 with a reference signal for carrying a physical downlink control channel (“PDCCH”) of QCL for DCI format 0_1. Subsequently, the UE calculates the remaining NCJT transmission assumptions for TCI code points (Q1, Qi, i = 2, ..., N) under different assumptions depending on (r1, P1, CQI1). In various embodiments, report 1 (e.g., the single TRP transmission assumption) may have the highest priority, followed by reports ordered in descending order of spectral efficiency performance, which may override another priority order. This prioritization may be relevant to multiple TRP transmissions and can achieve higher performance.

[0165] In some embodiments, the CSI reporting configuration for CSI feedback (e.g., CQI, PMI, RI, CRI, and / or layer index (“LI”)) includes a channel measurement CSI resource set for channel measurements in a CSI resource setting (e.g., CSI-ResourceConfig), a CSI-IM resource set within a CSI resource setting for ZP interference measurements, and / or an NZP CSI-RS interference CSI resource set within a CSI resource setting for NZP CSI-RS interference measurements. In various embodiments, the RRC parameter groupBasedCSIReporting (e.g., in the CSI reporting configuration) can enable and / or configure multi-TRP and / or panel CSI feedback with CSI reports comprising a set of N_g CSI reports or sub-CSI reports or CSI components. The channel measurement CSI resource set may include a K=NTRP NZP CSI-RS resource i with NZP CSI-RS resource i, which includes a multi-port CSI-RS associated with TRP i. Similarly, a CSI-IM resource set may include K = NTRP CSI-IM resources having CSI-IM resource i associated with TRP i. In one example, each CSI-RS resource for channel measurement is associated with a CSI-IM resource individually by sorting the CSI-RS resources and CSI-IM resources in the corresponding resource set using a number equal to the number of CSI-IM resources for channel measurement. In another example, a single CSI-IM resource may be configured and associated with each CSI-RS resource for channel measurement (e.g., and each TRP). The NZP CSI-RS resources for channel measurement and the CSI-IM resources associated with TRP i for interference measurement may be QCLed relative to "QCL-TypeD". The NZP CSI resource set for interference measurement may include K = NTRP NZP CSI-RS interference IMR resources having NZP CSI-RS resource i including a multiport interference CSI-RS associated with TRP i. The NZP CSI-RS resources used for channel measurements and the NZP CSI-RS IMR resources associated with TRP i for interference measurements can be QCL relative to "QCL-TypeD".

[0166] In some embodiments, a single TRP CSI report, sub-CSI report, and / or CSI component may be based on the Channel CSI-RS channel measurement resource (“CMR”), CSI-IM, and / or the NZP CSI-RS IMR associated with the TRP. In various embodiments, the channel CMR of other TRPs may be included as additional inter-layer interference via a single CSI-IM resource. For joint transmission CSI reports, sub-CSI reports, and / or CSI components involving TRPs i and j, channel measurements may be based on the CMR for TRPs i and j, provided that the interference is based on the associated CSI-IM and / or the NZP CSI-RS IMR associated with TRPs i and j. In some embodiments, the channel CMR of other TRPs (e.g., excluding TRPs i and j) may be included as additional inter-layer interference. In some embodiments, the number of TRPs to which CSI reports are performed may correspond to the number of NZP CSI-RS resources in the channel measurement CSI resource set. In various embodiments, the number of TRPs in the joint transmission assumption may be limited to 2.

[0167] In some embodiments, the terms antenna, panel, and antenna panel are used interchangeably. An antenna panel can be hardware for transmitting and / or receiving radio signals at frequencies below 6 GHz (e.g., frequency range 1 (“FR1”)) or above 6 GHz (e.g., frequency range 2 (“FR2”) or millimeter wave (“mmWave”)). In some embodiments, the antenna panel may include an array of antenna elements. Each antenna element may be connected to hardware, such as a phase shifter, which enables a control module to apply spatial parameters for signal transmission and / or reception. The resulting radiation pattern may be referred to as a beam, which may or may not be single-peaked and may allow the device to amplify signals transmitted or received from a spatial direction.

[0168] In various embodiments, antenna panels may or may not be virtualized as antenna ports. Antenna panels can be connected to the baseband processing module via radio frequency (“RF”) chains for each transmission (e.g., outgoing) and reception (e.g., incoming) direction. The capabilities of the device may or may not be transparent to other devices in terms of the number of antenna panels, their duplex capabilities, their beamforming capabilities, etc. In some embodiments, capability information may be transmitted via signaling, or it may be provided to the device without signaling. If the information is available to other devices, it can be used for signaling or local decision-making.

[0169] In some embodiments, the UE antenna panel may be a physical or logical antenna array comprising a collection of antenna elements or antenna ports sharing a common or significant portion of the radio frequency (“RF”) chain (e.g., in-phase and / or quadrature (“I / Q”) modulators, analog-to-digital (“A / D”) converters, local oscillators, phase-shift networks). The UE antenna panel or UE panel may be a logical entity having physical UE antennas mapped to logical entities. The mapping from physical UE antennas to logical entities may depend on the UE implementation. Communication (e.g., receiving or transmitting) on ​​at least a subset of antenna elements or antenna ports (e.g., active elements) associated with the antenna panel’s radiated energy activity may require biasing or energizing the RF chain, which can lead to current depletion or power consumption in the 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). As used herein, the phrase “for radiated energy activity” is not intended to be limited to transmitting functions but also covers receiving functions. Therefore, antenna elements that radiate energy can be coupled simultaneously or sequentially to a transmitter to transmit radio frequency energy or to a receiver to receive radio frequency energy, or typically to a transceiver to perform their intended function. Communication on the active elements of the antenna panel can generate radiation patterns or beams.

[0170] In some embodiments, depending on the UE's own implementation, the "UE panel" may have at least one of the following functionalities: an antenna group unit that independently controls its transmit ("TX") beam, an antenna group unit that independently controls its transmit power, and / or an antenna group unit that independently controls its transmission timing. The "UE panel" may be transparent to the gNB. Under certain conditions, the gNB or network may assume that the mapping between the UE's physical antennas and the logical entity "UE panel" is unlikely to change. For example, the conditions may include until the next update or report from the UE, or a duration under which the gNB assumes the mapping will not change. The UE may report its UE capabilities relative to the "UE panel" to the gNB or network. UE capabilities may include at least the number of "UE panels". In one embodiment, the UE may support UL transmission from one beam within the panel. For 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.

[0171] In some embodiments, an antenna port can be defined such that the channel transmitting a symbol on the same antenna port can be inferred from the channel transmitting another symbol on the same antenna port.

[0172] In some embodiments, two antenna ports are considered quasi-co-located (“QCL”) if the large-scale properties of the channel on which symbols on one antenna port are transmitted can be inferred from the channel on which symbols on the other antenna port are transmitted. Large-scale properties may include one or more of delay spread, Doppler spread, Doppler shift, average gain, average delay, and / or spatial reception (“RX”) parameters. Two antenna ports may be quasi-co-located relative to a subset of the large-scale properties, and different subsets of the large-scale properties may be indicated by the QCL type. For example, 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}; 4) “QCL-TypeD”: {spatial Rx parameter}.

[0173] In various embodiments, spatial RX parameters may include one or more of the following: angle of arrival (“AoA”), principal AoA, average AoA, angular spread, power angular spectrum of AoA (“PAS”), average departure angle (“AoD”), PAS of AoD, transmit and / or receive channel correlation, transmit and / or receive beamforming and / or spatial channel correlation.

[0174] In some embodiments, an "antenna port" may be a logical port that corresponds to a beam (e.g., generated by beamforming) or a physical antenna on the device. In some embodiments, a physical antenna may be directly mapped to a single antenna port, where the antenna port corresponds to an actual physical antenna. In various embodiments, a collection of physical antennas, a subset of physical antennas, an antenna set, an antenna array, or an antenna subarray may be mapped to one or more antenna ports after applying complex weights and / or cyclic delays to the signal on each physical antenna. A physical antenna set may have antennas from a single module or panel or from multiple modules or panels. Weights may be fixed in an antenna virtualization scheme, such as cyclic delay diversity ("CDD"). The process for deriving an antenna port from a physical antenna may be device-specific and transparent to other devices.

[0175] In various embodiments, the Transport Configuration Indicator (“TCI”) state associated with the target transmission can indicate the quasi-co-location relationship between the target transmission (e.g., the target RS at the demodulation reference signal (“DM-RS”) port of the target transmission during the transmission timing) and the source reference signal (e.g., synchronization block (“SSB”), channel state information reference signal (“CSI-RS”), and / or probe reference signal (“SRS”)) relative to the quasi-co-location type parameters indicated in the respective TCI state. The device can receive configurations of multiple Transport Configuration Indicator states for transmitting on the serving cell.

[0176] In some embodiments, spatial relation information associated with the target transmission can indicate the spatial arrangement between the target transmission and a reference RS (e.g., SSB, CSI-RS, and / or SRS). For example, the UE can transmit the target transmission using the same spatial domain filter used for receiving reference RSs (e.g., DL RSs such as SSBs and / or CSI-RSs). In another example, the UE can transmit the target transmission using the same spatial domain transmission filter used for transmitting RSs (e.g., UL RSs such as SRSs). The UE can receive a configuration of multiple spatial relation information configurations for the serving cell for transmission on the serving cell.

[0177] Figure 9 This is a flowchart illustrating one embodiment of a method 900 for reporting channel state information. In some embodiments, method 900 is executed by a device such as remote unit 102. In some embodiments, method 900 may be executed by a processor that executes program code, such as a microcontroller, microprocessor, CPU, GPU, auxiliary processing unit, FPGA, etc.

[0178] In various embodiments, method 900 includes receiving 902 channel state information report configuration information, wherein the channel state information report configuration information includes: information indicating the configuration of one or more channel state information reference signal resources associated with one or more channel state information reference signal resource sets for channel measurement, interference measurement, or a combination thereof; and information indicating that channel state information feedback corresponding to a plurality of points is used, wherein each of the plurality of points is associated with a non-zero power channel state information reference signal resource of the channel state information reference signal resource set for channel measurement, and at least one of the plurality of points is associated with one or more channel state information interference management resources for zero power interference measurement. In some embodiments, method 900 includes performing 904 channel measurement using the channel state information reference signal resource set. In various embodiments, method 900 includes generating a set of 906 channel state information reports based on the channel state information report configuration information.

[0179] In some embodiments, each of the plurality of points corresponds to a transmit and receive point or a panel of transmit and receive points. In some embodiments, the information indicating the channel state information feedback used for the plurality of points includes: radio resource control parameters within a channel state information reporting configuration; the number of channel state information reports within a channel state information reporting configuration; quasi-co-location relationships relating to one or more channel state information reference signal resources within one or more channel state information reference signal resource sets; code points indicating different downlink control information states; codebook type parameters; codebook configuration parameters; transmission configuration indicator code points from a transmission configuration including at least two transmission configuration indicator states; indications of spatial multiplexing schemes across the plurality of points; or combinations thereof.

[0180] In various embodiments, the channel state information report in the set of channel state information reports comprises two parts, and the second part of the two parts of the channel state information report comprises two precoder matrix indicators. In one embodiment, a first precoder matrix indicator of the two precoder matrix indicators is associated with a non-zero power channel state information reference signal resource for channel measurement resources, a non-zero power channel state information reference signal resource for interference measurement resources, a channel state information interference management resource, or some combination thereof, and a second precoder matrix indicator of the two precoder matrix indicators is associated with a non-zero power channel state information reference signal for channel measurement resources, channel state information interference management, or a combination thereof.

[0181] In some embodiments, the absolute difference between the number of layers corresponding to the first precoder matrix indicator and the number of layers corresponding to the second precoder matrix indicator is no greater than one. In some embodiments, method 900 further includes transmitting a set of channel state information reports in order based on a channel state information priority function.

[0182] In various embodiments, the channel state information priority function is calculated using a formula, where channel state information reports with lower formula values ​​have higher priority: Pri iCSI (y, k, c, s, g) = 2·N cells ·M s ·N g ·y+N cells ·M s ·N g ·k+M s ·N g ·c+N g ·s+g, where N g The total number of channel state information reporting groups, g is a value from 0 to N. g-1 corresponds to the index, s is the channel state information configuration index, M s The maximum number of channel state information reports configured, where c is the cell index and N is the maximum number of reports. cells For the number of serving cells, k reports 0 for channel state information carrying the received power of the Layer 1 reference signal or the Layer 1 signal-to-noise ratio, otherwise it is 1, and y reports 0 for non-periodic reports, 1 for semi-persistent reports transmitted on the physical uplink shared channel, 2 for semi-persistent reports transmitted on the physical uplink control channel, or 3 for periodic reports.

[0183] In one embodiment, a channel state information report corresponding to a set of channel state information reports from a single point of transmission has a higher priority than a set of channel state information reports corresponding to a set of channel state information reports from joint transmissions from multiple points. In some embodiments, channel state information that is common to a subset of two or more channel state information reports is reported in one of the channel state information reports from the subset of two or more channel state information reports. In some embodiments, common channel state information includes information that is common to all layers.

[0184] In various embodiments, at least one channel state information report in the set of channel state information reports includes channel state information corresponding to a Type II codebook, and at least one channel state information report includes at least one bitmap indicating a beam with non-zero coefficients included in at least one channel state information report. In one embodiment, the channel state information reports in the set of channel state information reports include a plurality of channel quality indicators.

[0185] In some embodiments, the value of at least one channel quality indicator among a plurality of channel quality indicators is calculated differentially relative to the value of another channel quality indicator among a plurality of channel quality indicators. In some embodiments, the at least one channel quality indicator calculated differentially is configured with a channel quality indicator format indicator corresponding to a differential channel quality indicator format.

[0186] Figure 10 This is a flowchart illustrating another embodiment of a method 1000 for reporting channel state information. In some embodiments, method 1000 is performed by a device such as remote unit 102. In some embodiments, method 1000 may be performed by a processor that executes program code, such as a microcontroller, microprocessor, CPU, GPU, auxiliary processing unit, FPGA, etc.

[0187] In various embodiments, method 1000 includes receiving 1002 channel state information report configuration information, wherein the channel state information report configuration information includes: information indicating the configuration of one or more channel state information reference signal resources associated with a channel state information reference signal resource set for channel measurement and a channel state information interference management resource set for interference measurement; and information indicating that channel state information feedback corresponding to a plurality of points is used, wherein each of the plurality of points is associated with a non-zero power channel state information reference signal resource for channel measurement in the channel state information reference signal resource set, and the plurality of points are associated with one or more channel state information interference management resources for interference measurement in the channel state information interference management resource set. In some embodiments, method 1000 includes generating a set of 1004 channel state information reports based on the channel state information report configuration information, wherein each channel state information report in the set of channel state information reports includes two parts. In various embodiments, method 1000 includes reporting a set of 1006 channel state information reports to the network.

[0188] In some embodiments, each of the plurality of points corresponds to a transmit and receive point or a panel of transmit and receive points. In some embodiments, information indicating the use of channel state information feedback for the plurality of points includes: radio resource control parameters within a channel state information reporting configuration; the number of channel state information reports within a channel state information reporting configuration; quasi-co-location relationships relating to one or more channel state information reference signal resources within a channel state information reference signal resource set; code points indicating different downlink control information states; codebook type parameters; codebook configuration parameters; transmission configuration indicator code points from a transmission configuration including at least two transmission configuration indicator states; indications of spatial multiplexing schemes across the plurality of points; or combinations thereof. In various embodiments, each of the plurality of points is associated with a channel state information interference management resource for interference measurement.

[0189] In one embodiment, each channel state information (CSI) reference signal resource used for channel measurement is associated with a channel state information interference management resource one by one by sorting the CSI reference signal resources and channel state information interference management resources in the corresponding resource set, and the number of CSI reference signal resources used for channel measurement is equal to the number of channel state information interference management resources. In some embodiments, non-zero power CSI reference signal resources for channel measurement and channel state information interference management resources for interference measurement associated with the same point are quasi-co-located relative to "QCL-TypeD". In some embodiments, multiple points are associated with at least one non-zero power CSI reference signal resource used for interference measurement.

[0190] In various embodiments, the set of channel state information reports includes two subsets of channel state information reports. The first subset includes at least one channel state information report corresponding to a single-point transmission, and the second subset includes at least one channel state information report corresponding to a joint transmission from multiple points. In one embodiment, a partition in one of the two channel state information reports that reports the same channel state information for both channel state information reports is associated with a different subset of the two subsets of the channel state information reports.

[0191] In some embodiments, a subset of one or more channel state information reports from a set of channel state information reports is identified. In some embodiments, the subset of one or more channel state information reports is identified based on: network configuration; identifiers of the channel state information reports; user equipment feedback; a function of the rank indicator of one or more channel state information reports; a function of the channel quality indicator of one or more channel state information reports; or some combination thereof. In various embodiments, a subset of one or more channel state information reports is reported in part.

[0192] In one embodiment, a first portion of two parts of one or more subsets of channel state information reports is reported, but the second portion of the two parts of the one or more subsets of channel state information reports is not reported. In some embodiments, a first portion of two parts of one or more subsets of channel state information reports, as well as a second portion and a small portion of the two parts, are reported, but the final small portion of the second portion of the two parts of the one or more subsets of channel state information reports is not reported. In some embodiments, one or more subsets of channel state information reports are not reported.

[0193] Figure 11 This is a flowchart illustrating yet another embodiment of a method 1100 for reporting channel state information. In some embodiments, method 1100 is performed by a device such as remote unit 102. In some embodiments, method 1100 may be performed by a processor that executes program code, such as a microcontroller, microprocessor, CPU, GPU, auxiliary processing unit, FPGA, etc.

[0194] In various embodiments, method 1100 includes receiving 1102 channel state information report configuration information, wherein the channel state information report configuration information includes: information indicating one or more channel state information reference signal resource configurations associated with at least one non-zero power channel state information reference signal resource set for channel measurement; and information indicating that channel state information report configurations corresponding to a plurality of points are used, wherein the plurality of points are associated with a major group of points or a minor group of points. In some embodiments, method 1100 includes performing 1104 channel measurement using at least one non-zero power channel state information reference signal resource set. In various embodiments, method 1100 includes generating 1106 a set of channel state information reports based on the channel state information report configuration information.

[0195] In some embodiments, each of the plurality of points corresponds to a transmit and receive point or a panel of transmit and receive points. In some embodiments, the information indicating the channel state information feedback used for the plurality of points includes: radio resource control parameters within a channel state information reporting configuration; the number of channel state information reports within a channel state information reporting configuration; quasi-co-location relationships relating to one or more channel state information reference signal resources within at least one channel state information reference signal resource set; code points indicating different downlink control information states; codebook type parameters; codebook configuration parameters; transmission configuration indicator code points from a transmission configuration including at least two transmission configuration indicator states; indications of spatial multiplexing schemes across the plurality of points; or combinations thereof.

[0196] In various embodiments, the primary group of points includes one point, and the secondary group of points includes at least one point. In one embodiment, joint transmission from two points corresponds to the primary point and the secondary point in the primary group and the secondary group of points. In some embodiments, the primary point is associated with a non-zero power channel state information reference signal resource for channel measurement, which is quasi-co-located with the physical downlink control channel.

[0197] In some embodiments, the rank indicator value carried in the channel state information report corresponding to the secondary point channel state information feedback is no more than two. In various embodiments, each of the plurality of points is associated with a non-zero power channel state information reference signal resource for channel measurement in the channel state information reference signal resource set. In one embodiment, one or more non-zero power channel state information reference signal resources for interference measurement are quasi-co-located with non-zero power channel state information reference signal resources for channel measurement.

[0198] In some embodiments, method 1100 further includes transmitting a set of channel state information reports in order based on a channel state information priority function, wherein the channel state information priority function is calculated using a formula, and channel state information reports with lower formula values ​​have higher priority: Pri iCSI (y, k, c, s, g) = 2·N cells ·M s ·N g ·y+N cells ·M s ·N g ·k+M s ·N g ·c+N g ·s+g, where N g The total number of channel state information reporting groups, g is a value from 0 to N. g -1 corresponds to the index, s is the channel state information configuration index, M s The maximum number of channel state information reports configured, where c is the cell index and N is the maximum number of reports. cells For the number of serving cells, k reports 0 for channel state information carrying the received power of the Layer 1 reference signal or the Layer 1 signal-to-noise ratio, otherwise it is 1, and y reports 0 for non-periodic reports, 1 for semi-persistent reports transmitted on the physical uplink shared channel, 2 for semi-persistent reports transmitted on the physical uplink control channel, or 3 for periodic reports.

[0199] In some embodiments, a channel state information report corresponding to a set of channel state information reports from a single point transmission has a higher priority than a set of channel state information reports corresponding to a set of channel state information reports from a joint transmission from multiple points. In various embodiments, a channel state information report corresponding to a single point transmission from a major point has a higher priority than channel state information reports in the set of channel state information reports.

[0200] In one embodiment, a method includes: receiving channel state information report configuration information, wherein the channel state information report configuration information includes: information indicating the configuration of one or more channel state information reference signal resources associated with one or more channel state information reference signal resource sets for channel measurement, interference measurement, or a combination thereof; and information indicating that channel state information feedback corresponding to a plurality of points is used, wherein each of the plurality of points is associated with a non-zero power channel state information reference signal resource of the channel state information reference signal resource set for channel measurement, and at least one of the plurality of points is associated with one or more channel state information interference management resources for zero power interference measurement; performing channel measurement using the channel state information reference signal resource set; and generating a set of channel state information reports based on the channel state information report configuration information.

[0201] In some embodiments, each of the plurality of points corresponds to a transmit and receive point or a panel of transmit and receive points.

[0202] In some embodiments, the information used to indicate channel state information feedback for multiple points includes: radio resource control parameters within a channel state information reporting configuration; the number of channel state information reports within a channel state information reporting configuration; quasi-co-location relationships involving one or more channel state information reference signal resources within one or more channel state information reference signal resource sets; code points indicating different downlink control information states; codebook type parameters; codebook configuration parameters; transmission configuration indicator code points from a transmission configuration including at least two transmission configuration indicator states; indications of spatial multiplexing schemes across multiple points; or combinations thereof.

[0203] In various embodiments, the channel state information report in the set of channel state information reports includes two parts, and the second part of the two parts of the channel state information report includes two precoder matrix indicators.

[0204] In one embodiment, the first precoder matrix indicator of the two precoder matrix indicators is associated with a non-zero power channel state information reference signal resource for channel measurement resources, a non-zero power channel state information reference signal resource for interference measurement resources, a channel state information interference management resource, or some combination thereof, and the second precoder matrix indicator of the two precoder matrix indicators is associated with a non-zero power channel state information reference signal for channel measurement resources, a channel state information interference management resource, or a combination thereof.

[0205] In some embodiments, the absolute difference between the number of layers corresponding to the first precoder matrix indicator and the number of layers corresponding to the second precoder matrix indicator is no greater than one.

[0206] In some embodiments, the method further includes transmitting a set of channel state information reports in order based on a channel state information priority function.

[0207] In various embodiments, a formula is used to calculate the channel state information priority function, where channel state information reports with lower formula values ​​have higher priority: Pri iCSI (y, k, c, s, g) = 2·N cells ·M s ·N g ·y+N cells ·M s ·N g ·k+M s ·N g ·c+N g ·s+g, where N g The total number of channel state information reporting groups, g is a value from 0 to N. g -1 corresponds to the index, s is the channel state information configuration index, M s The maximum number of channel state information reports configured, where c is the cell index and N is the maximum number of reports. cells For the number of serving cells, k reports 0 for channel state information carrying the received power of the Layer 1 reference signal or the Layer 1 signal-to-noise ratio, otherwise it is 1, and y reports 0 for non-periodic reports, 1 for semi-persistent reports transmitted on the physical uplink shared channel, 2 for semi-persistent reports transmitted on the physical uplink control channel, or 3 for periodic reports.

[0208] In one embodiment, a channel state information report corresponding to a set of channel state information reports from a single point of transmission has a higher priority than a set of channel state information reports corresponding to a set of channel state information reports from a joint transmission from multiple points.

[0209] In some embodiments, for a subset of two or more channel state information reports in a set of channel state information reports, common channel state information is reported in one of the channel state information reports within the subset of the two or more channel state information reports.

[0210] In some embodiments, common channel state information includes information that is common to all layers.

[0211] In various embodiments, at least one channel state information report in the set of channel state information reports includes channel state information corresponding to a Type II codebook, and at least one channel state information report includes at least one bitmap indicating a beam with non-zero coefficients included in at least one channel state information report.

[0212] In one embodiment, the channel state information reports in the set of channel state information reports include multiple channel quality indicators.

[0213] In some embodiments, the value of at least one of a plurality of channel quality indicators is calculated differentially relative to the value of another of the plurality of channel quality indicators.

[0214] In some embodiments, at least one channel quality indicator calculated differentially is configured with a channel quality indicator format indicator corresponding to a differential channel quality indicator format.

[0215] In one embodiment, an apparatus includes: a receiver configured to receive channel state information report configuration information, wherein the channel state information report configuration information includes: information indicating the configuration of one or more channel state information reference signal resources associated with one or more channel state information reference signal resource sets for channel measurement, interference measurement, or a combination thereof; and information indicating that channel state information feedback corresponding to a plurality of points is used, wherein each of the plurality of points is associated with a non-zero power channel state information reference signal resource of the channel state information reference signal resource set for channel measurement, and at least one of the plurality of points is associated with one or more channel state information interference management resources for zero power interference measurement; and a processor configured to: use the channel state information reference signal resource set. To perform channel measurements; and to generate a set of channel state information reports based on channel state information report configuration information, wherein each of the plurality of points corresponds to a transmit and receive point or a panel of transmit and receive points, and wherein the information indicating the channel state information feedback used for the plurality of points includes: radio resource control parameters within the channel state information report configuration; the number of channel state information reports within the channel state information report configuration; quasi-co-location relationships involving one or more channel state information reference signal resources within one or more channel state information reference signal resource sets; code points indicating different downlink control information states; codebook type parameters; codebook configuration parameters; transmission configuration indicator code points from a transmission configuration including at least two transmission configuration indicator states; indications of spatial multiplexing schemes across the plurality of points; or some combination thereof.

[0216] In some embodiments, the channel state information report in the set of channel state information reports includes two parts, and the second part of the two parts of the channel state information report includes two precoder matrix indicators. The first precoder matrix indicator of the two precoder matrix indicators is associated with a non-zero power channel state information reference signal resource for channel measurement resources, a non-zero power channel state information reference signal resource for interference measurement resources, a channel state information interference management resource, or some combination thereof. The second precoder matrix indicator of the two precoder matrix indicators is associated with a non-zero power channel state information reference signal for channel measurement resources, a channel state information interference management resource, or a combination thereof. The absolute difference between the number of layers corresponding to the first precoder matrix indicator of the two precoder matrix indicators and the number of layers corresponding to the second precoder matrix indicator of the two precoder matrix indicators is not greater than one.

[0217] In some embodiments, the apparatus further includes a transmitter that transmits sets of channel state information reports in an order based on a channel state information priority function, wherein channel state information reports corresponding to a set of channel state information reports transmitted from a single point have a higher priority than channel state information reports corresponding to a set of channel state information reports transmitted jointly from multiple points, and the channel state information priority function is calculated using a formula, wherein channel state information reports with lower formula values ​​have higher priority: Pri iCSI (y, k, c, s, g) = 2·N cells ·M s ·N g ·y+N cells ·M s ·N g ·k+M s ·N g ·c+N g ·s+g, where N g The total number of channel state information reporting groups, g is a value from 0 to N. g -1 corresponds to the index, s is the channel state information configuration index, M s The maximum number of channel state information reports configured, where c is the cell index and N is the maximum number of reports. cells For the number of serving cells, k reports 0 for channel state information carrying the received power of the Layer 1 reference signal or the Layer 1 signal-to-noise ratio, otherwise it is 1, and y reports 0 for non-periodic reports, 1 for semi-persistent reports transmitted on the physical uplink shared channel, 2 for semi-persistent reports transmitted on the physical uplink control channel, or 3 for periodic reports.

[0218] In various embodiments, for a subset of two or more channel state information reports in a set of channel state information reports, common channel state information is reported in one of the channel state information reports within the subset of the two or more channel state information reports.

[0219] In one embodiment, at least one channel state information report in the set of channel state information reports includes channel state information corresponding to a Type II codebook, and at least one channel state information report includes at least one bitmap indicating a beam with non-zero coefficients included in at least one channel state information report. The channel state information reports in the set of channel state information reports include a plurality of channel quality indicators, the value of at least one of the plurality of channel quality indicators is calculated differentially relative to the value of another of the plurality of channel quality indicators, and the at least one channel quality indicator calculated differentially is configured with a channel quality indicator format indicator corresponding to a differential channel quality indicator format.

[0220] In one embodiment, a method includes: receiving channel state information report configuration information, wherein the channel state information report configuration information includes: information indicating the configuration of one or more channel state information reference signal resources associated with a channel state information reference signal resource set for channel measurement and a channel state information interference management resource set for interference measurement; and information indicating that channel state information feedback corresponding to a plurality of points is used, wherein each of the plurality of points is associated with a non-zero power channel state information reference signal resource for channel measurement in the channel state information reference signal resource set, and the plurality of points are associated with one or more channel state information interference management resources for interference measurement in the channel state information interference management resource set; generating a set of channel state information reports based on the channel state information report configuration information, wherein each channel state information report in the set of channel state information reports includes two parts; and reporting the set of channel state information reports to a network.

[0221] In some embodiments, each of the plurality of points corresponds to a transmit and receive point or a panel of transmit and receive points.

[0222] In some embodiments, the information used to indicate the channel state information feedback for multiple points includes: radio resource control parameters within the channel state information reporting configuration; the number of channel state information reports within the channel state information reporting configuration; quasi-co-location relationships involving one or more channel state information reference signal resources within the channel state information reference signal resource set; code points indicating different downlink control information states; codebook type parameters; codebook configuration parameters; transmission configuration indicator code points from a transmission configuration including at least two transmission configuration indicator states; indications of spatial multiplexing schemes across multiple points; or combinations thereof.

[0223] In various embodiments, each of the multiple points is associated with a channel state information interference management resource used for interference measurement.

[0224] In one embodiment, each channel state information reference signal resource used for channel measurement is associated with a channel state information interference management resource by sorting the channel state information reference signal resources and channel state information interference management resources in the corresponding resource set, and the number of channel state information reference signal resources used for channel measurement is equal to the number of channel state information interference management resources.

[0225] In some embodiments, non-zero power channel state information reference signal resources for channel measurements and channel state information interference management resources for interference measurements associated with the same point are quasi-co-located relative to "QCL-TypeD".

[0226] In some embodiments, multiple points are associated with at least one non-zero power channel state information reference signal resource for interference measurement.

[0227] In various embodiments, the set of channel state information reports includes two subsets of channel state information reports, the first of which includes at least one channel state information report corresponding to a single-point transmission, and the second of which includes at least one channel state information report corresponding to a joint transmission from multiple points.

[0228] In one embodiment, a partition that reports the same channel state information for both channel state information reports is associated with a different subset of the two subsets of the channel state information reports.

[0229] In some embodiments, a subset of one or more channel state information reports is identified from the set of channel state information reports.

[0230] In some embodiments, one or more channel state information reports of a subset of channel state information reports are identified based on: network configuration; the identifier of the channel state information reports; user equipment feedback; a function of the rank indicator of one or more channel state information reports; a function of the channel quality indicator of one or more channel state information reports; or some combination thereof.

[0231] In various embodiments, one or more channel state information reports are reported, which are subsets of the channel state information reports.

[0232] In one embodiment, a first portion of two parts of one or more subsets of the channel state information report is reported, and a second portion of two parts of one or more subsets of the channel state information report is not reported.

[0233] In some embodiments, the first part of two portions of one or more subsets of the channel state information report and a small portion of the second portion of the two portions of the channel state information report are reported, but the last small portion of the second portion of two portions of one or more subsets of the channel state information report is not reported.

[0234] In some embodiments, one or more channel state information reports, a subset of the channel state information reports, are not reported.

[0235] In one embodiment, an apparatus includes: a receiver configured to receive channel state information report configuration information, wherein the channel state information report configuration information includes: information indicating the configuration of one or more channel state information reference signal resources associated with a channel state information reference signal resource set for channel measurement and a channel state information interference management resource set for interference measurement; and information indicating that channel state information feedback corresponding to a plurality of points is used, wherein each of the plurality of points is associated with a non-zero power channel state information reference signal resource for channel measurement in the channel state information reference signal resource set, the plurality of points are associated with one or more channel state information interference management resources for interference measurement in the channel state information interference management resource set, and each of the plurality of points corresponds to a transmit and receive point or a panel of transmit and receive points; and a processor configured to: generate a set of channel state information reports based on the channel state information report configuration information, wherein each channel state information report in the set of channel state information reports includes two parts; and report the set of channel state information reports to a network.

[0236] In some embodiments, the information used to indicate the channel state information feedback for multiple points includes: radio resource control parameters within the channel state information reporting configuration; the number of channel state information reports within the channel state information reporting configuration; quasi-co-location relationships involving one or more channel state information reference signal resources within the channel state information reference signal resource set; code points indicating different downlink control information states; codebook type parameters; codebook configuration parameters; transmission configuration indicator code points from a transmission configuration including at least two transmission configuration indicator states; indications of spatial multiplexing schemes across multiple points; or combinations thereof.

[0237] In some embodiments, each of the plurality of points is associated with a channel state information interference management resource for interference measurement, and each channel state information reference signal resource for channel measurement is associated with a channel state information interference management resource one by one by sorting the channel state information reference signal resources and channel state information interference management resources in the corresponding resource set. The number of channel state information reference signal resources for channel measurement is equal to the number of channel state information interference management resources, and the non-zero power channel state information reference signal resources for channel measurement and the channel state information interference management resources for interference measurement associated with the same point are quasi-co-located relative to "QCL-TypeD".

[0238] In various embodiments, the set of channel state information reports includes two subsets of channel state information reports. The first subset of the two subsets of channel state information reports includes at least one channel state information report corresponding to a single-point transmission, and the second subset of the two subsets of channel state information reports includes at least one channel state information report corresponding to a joint transmission from multiple points. Furthermore, a partition in one of the two channel state information reports that reports the same channel state information for both channel state information reports is associated with a different subset of the two subsets of channel state information reports.

[0239] In one embodiment, a subset of one or more channel state information reports of a set of channel state information reports is identified, and the subset of one or more channel state information reports of the channel state information report is identified based on: network configuration; identifier of the channel state information report; user equipment feedback; a function of the rank indicator of one or more channel state information reports; a function of the channel quality indicator of one or more channel state information reports; or some combination thereof, wherein one or more channel state information reports of the subset of channel state information reports are reported in part, and one or more channel state information reports of the subset of channel state information reports are not reported, and wherein: a first part of two parts of one or more channel state information reports of the subset of channel state information reports is reported, and a second part of two parts of two parts of one or more channel state information reports of the subset of channel state information reports is not reported; or a first part of two parts of one or more channel state information reports of the subset of channel state information reports and a first small part of the second part of two parts of two parts are reported, and the last small part of the second part of two parts of one or more channel state information reports of the subset of channel state information reports is not reported.

[0240] In one embodiment, a method includes: receiving channel state information report configuration information, wherein the channel state information report configuration information includes: information indicating one or more channel state information reference signal resource configurations associated with at least one non-zero power channel state information reference signal resource set for channel measurement; and information indicating that channel state information report configurations corresponding to a plurality of points are used, wherein the plurality of points are associated with a primary group of points or a secondary group of points; performing channel measurement using at least one non-zero power channel state information reference signal resource set; and generating a set of channel state information reports based on the channel state information report configuration information.

[0241] In some embodiments, each of the plurality of points corresponds to a transmit and receive point or a panel of transmit and receive points.

[0242] In some embodiments, the information used to indicate channel state information feedback for multiple points includes: radio resource control parameters within a channel state information reporting configuration; the number of channel state information reports within a channel state information reporting configuration; quasi-co-location relationships involving one or more channel state information reference signal resources within at least one channel state information reference signal resource set; code points indicating different downlink control information states; codebook type parameters; codebook configuration parameters; transmission configuration indicator code points from a transmission configuration including at least two transmission configuration indicator states; indications of spatial multiplexing schemes across multiple points; or combinations thereof.

[0243] In various embodiments, the primary group of points includes one point, and the secondary group of points includes at least one point.

[0244] In one embodiment, the joint transmission from two points corresponds to the main point and the secondary point in the main group and the secondary group of points.

[0245] In some embodiments, the key point is associated with the non-zero power channel state information reference signal resource for channel measurement, which is quasi-co-located with the physical downlink control channel.

[0246] In some embodiments, the rank indicator value carried in the channel state information report corresponding to the secondary channel state information feedback does not exceed two.

[0247] In various embodiments, each of the plurality of points is associated with a non-zero power channel state information reference signal resource for channel measurement in the channel state information reference signal resource set.

[0248] In one embodiment, one or more non-zero power channel state information reference signal resources for interference measurement are quasi-co-located with non-zero power channel state information reference signal resources for channel measurement.

[0249] In some embodiments, the method further includes transmitting a set of channel state information reports in order based on a channel state information priority function, wherein the channel state information priority function is calculated using a formula, and channel state information reports with lower formula values ​​have higher priority: Pri iCSI (y, k, c, s, g) = 2·N cells ·M s ·N g ·y+N cells ·M s ·N g ·k+M s ·N g ·c+N g ·s+g, where N g The total number of channel state information reporting groups, g is a value from 0 to N. g -1 corresponds to the index, s is the channel state information configuration index, M s The maximum number of channel state information reports configured, where c is the cell index and N is the maximum number of reports. cells For the number of serving cells, k reports 0 for channel state information carrying the received power of the Layer 1 reference signal or the Layer 1 signal-to-noise ratio, otherwise it is 1, and y reports 0 for non-periodic reports, 1 for semi-persistent reports transmitted on the physical uplink shared channel, 2 for semi-persistent reports transmitted on the physical uplink control channel, or 3 for periodic reports.

[0250] In some embodiments, a channel state information report corresponding to a set of channel state information reports transmitted from a single point has a higher priority than a channel state information report corresponding to a set of channel state information reports transmitted jointly from multiple points.

[0251] In various embodiments, the channel state information report corresponding to a single point transmission from the main point has a higher priority than the channel state information reports in the set of channel state information reports.

[0252] In one embodiment, an apparatus includes: a receiver configured to receive channel state information report configuration information, wherein the channel state information report configuration information includes: information indicating one or more channel state information reference signal resource configurations associated with at least one non-zero power channel state information reference signal resource set for channel measurement; and information indicating that channel state information report configurations corresponding to a plurality of points are used, wherein the plurality of points are associated with a major group of points or a minor group of points; and a processor configured to: perform channel measurement using at least one non-zero power channel state information reference signal resource set; and generate a set of channel state information reports based on the channel state information report configuration information.

[0253] In some embodiments, each of the plurality of points corresponds to a transmit and receive point or a panel of transmit and receive points.

[0254] In some embodiments, the information used to indicate channel state information feedback for multiple points includes: radio resource control parameters within a channel state information reporting configuration; the number of channel state information reports within a channel state information reporting configuration; quasi-co-location relationships involving one or more channel state information reference signal resources within at least one channel state information reference signal resource set; code points indicating different downlink control information states; codebook type parameters; codebook configuration parameters; transmission configuration indicator code points from a transmission configuration including at least two transmission configuration indicator states; indications of spatial multiplexing schemes across multiple points; or combinations thereof.

[0255] In various embodiments, the primary group of points includes one point, and the secondary group of points includes at least one point.

[0256] In one embodiment, the joint transmission from two points corresponds to a primary point and a secondary point in a primary group and a secondary group of points. The primary point is associated with a non-zero power channel state information reference signal resource for channel measurement that is quasi-co-located with the physical downlink control channel, and the rank indicator value carried in the channel state information report corresponding to the channel state information feedback of the secondary point does not exceed two.

[0257] In some embodiments, each of the plurality of points is associated with a non-zero power channel state information reference signal resource for channel measurement in the channel state information reference signal resource set, and one or more non-zero power channel state information reference signal resources for interference measurement are quasi-co-located with the non-zero power channel state information reference signal resources for channel measurement.

[0258] In some embodiments, the apparatus further includes a transmitter that transmits a set of channel state information reports in order based on a channel state information priority function, wherein the channel state information priority function is calculated using a formula, wherein channel state information reports with lower formula values ​​have higher priority: Pri iCSI (y, k, c, s, g) = 2·N cells ·M s ·N g ·y+N cells ·M s ·N g ·k+M s ·N g ·c+N g ·s+g, where N g The total number of channel state information reporting groups, g is a value from 0 to N. g -1 corresponds to the index, s is the channel state information configuration index, M s The maximum number of channel state information reports configured, where c is the cell index and N is the maximum number of reports. cells For the number of serving cells, k reports 0 for channel state information carrying the received power of the Layer 1 reference signal or the Layer 1 signal-to-noise ratio, otherwise it is 1, and y reports 0 for non-periodic reports, 1 for semi-persistent reports transmitted on the physical uplink shared channel, 2 for semi-persistent reports transmitted on the physical uplink control channel, or 3 for periodic reports.

[0259] In various embodiments, the channel state information report corresponding to the set of channel state information reports for a single point transmission has a higher priority than the channel state information report corresponding to the set of channel state information reports for a joint transmission from multiple points, and the channel state information report corresponding to the single point transmission from the main point has a higher priority than the channel state information reports in the set of channel state information reports.

[0260] The embodiments may be practiced in other specific forms. The described embodiments are to be regarded in all respects as illustrative rather than restrictive. Therefore, the scope of the invention is indicated by the appended claims rather than the foregoing description. All variations within the meaning and equivalents of the claims are included within their scope.

Claims

1. A method comprising: Receive channel state information report configuration information, wherein the channel state information report configuration information includes: Information indicating the configuration of one or more channel state information reference signal resources associated with at least one non-zero power channel state information reference signal resource set used for channel measurements; and The information used indicates the channel state information report configuration corresponding to multiple points, wherein the multiple points are associated with a primary group of points or a secondary group of points; Channel measurements are performed using the at least one non-zero power channel state information reference signal resource set; and A set of channel state information reports is generated based on the channel state information report configuration information. The channel state information reports in the set of channel state information reports include a first part with a fixed payload size and a second part with a variable payload size. The variable payload size is derived from the channel state information parameters in the first part and includes two precoding matrix indicators. The joint transmission from the two points corresponds to the main point in the main group of the points and the minor point in the minor group of the points.

2. The method according to claim 1, wherein, Each of the plurality of points corresponds to a transmit and receive point or a panel of transmit and receive points.

3. The method according to claim 1, wherein, The information used to indicate the channel state information feedback for multiple points includes: The radio resource control parameters within the channel state information report configuration; The number of channel state information reports configured within the channel state information report configuration; It involves quasi-co-address relationships of one or more channel state information reference signal resources within at least one channel state information reference signal resource set; Code points indicating different downlink control information states; Codebook type parameters; Codebook configuration parameters; Transmission configuration indicator code point from a transmission configuration that includes at least two transmission configuration indicator states; Indication of a spatial multiplexing scheme spanning multiple points; or Some of its combinations.

4. The method according to claim 1, wherein, The primary group of points comprises one point, and the secondary group of points comprises at least one point.

5. The method according to claim 1, wherein, The key points are associated with the non-zero power channel state information reference signal resources used for channel measurement, which are quasi-co-located with the physical downlink control channel.

6. The method according to claim 1, wherein, The rank indicator value carried in the channel state information report corresponding to the minor point shall not exceed two.

7. The method according to claim 1, wherein, Each of the plurality of points is associated with a non-zero power channel state information reference signal resource for channel measurement in the channel state information reference signal resource set.

8. The method according to claim 7, wherein, One or more non-zero power channel state information reference signal resources used for interference measurement are quasi-co-located with the non-zero power channel state information reference signal resources used for channel measurement.

9. The method of claim 1, further comprising transmitting a set of channel state information reports in an order based on a channel state information priority function, wherein, The channel state information priority function is calculated using a formula, where channel state information reports with lower formula values ​​have higher priority: in, The total number of channel state information report groups. g For values ​​from 0 to Corresponding index, s Configure an index for channel state information. The maximum number of channel state information reports configured. c For cell indexing, To the number of communities served, k The channel state information report for carrying the received power of the Layer 1 reference signal or the Layer 1 signal-to-noise ratio is 0, otherwise it is 1, and y The value is 0 for non-periodic reports, 1 for semi-persistent reports transmitted on the physical uplink shared channel, 2 for semi-persistent reports transmitted on the physical uplink control channel, or 3 for periodic reports.

10. The method according to claim 9, wherein, Channel state information reports corresponding to a set of channel state information reports from a single point of transmission have a higher priority than channel state information reports corresponding to a set of channel state information reports from a combined transmission from multiple points.

11. The method according to claim 10, wherein, The channel state information report corresponding to the single-point transmission from the main point has a higher priority than the channel state information reports in the set of channel state information reports.

12. An apparatus comprising: A receiver configured to receive channel state information report configuration information, wherein the channel state information report configuration information includes: Information indicating the configuration of one or more channel state information reference signal resources associated with at least one non-zero power channel state information reference signal resource set used for channel measurements; and The information used indicates the channel state information report configuration corresponding to multiple points, wherein the multiple points are associated with a primary group of points or a secondary group of points; Furthermore, each of the plurality of points is associated with a non-zero power channel state information reference signal resource used for channel measurements of the channel state information reference signal resource set; and Processor, the processor being configured to: Channel measurements are performed using the at least one non-zero power channel state information reference signal resource set; and A set of channel state information reports is generated based on the channel state information report configuration information. The channel state information reports in the set of channel state information reports include a first part with a fixed payload size and a second part with a variable payload size. The variable payload size is derived from the channel state information parameters in the first part and includes two precoding matrix indicators. The joint transmission from the two points corresponds to the main point in the main group of the points and the minor point in the minor group of the points.

13. The apparatus according to claim 12, wherein, Each of the plurality of points corresponds to a transmit and receive point or a panel of transmit and receive points.

14. The apparatus according to claim 12, wherein, The information indicating the use of channel state information feedback for multiple points includes: The radio resource control parameters within the channel state information report configuration; The number of channel state information reports configured within the channel state information report configuration; It involves quasi-co-address relationships of one or more channel state information reference signal resources within at least one channel state information reference signal resource set; Code points indicating different downlink control information states; Codebook type parameters; Codebook configuration parameters; Transmission configuration indicator code point from a transmission configuration that includes at least two transmission configuration indicator states; Indication of a spatial multiplexing scheme spanning multiple points; or Some of its combinations.

15. The apparatus according to claim 12, wherein, The primary group of points comprises one point, and the secondary group of points comprises at least one point.

16. The apparatus according to claim 12, wherein, The primary point is associated with the non-zero power channel state information reference signal resource for channel measurement, which is quasi-co-located with the physical downlink control channel, and the rank indicator value carried in the channel state information report corresponding to the secondary point does not exceed two.

17. The apparatus according to claim 12, wherein, Each of the plurality of points is associated with a non-zero power channel state information reference signal resource for channel measurement in the channel state information reference signal resource set, and one or more non-zero power channel state information reference signal resources for interference measurement are quasi-co-located with the non-zero power channel state information reference signal resources for channel measurement.

18. The apparatus of claim 12, further comprising a transmitter configured to transmit a set of channel state information reports in an order based on a channel state information priority function, wherein, The channel state information priority function is calculated using a formula, where channel state information reports with lower formula values ​​have higher priority: in, The total number of channel state information report groups. g For values ​​from 0 to Corresponding index, s Configure an index for channel state information. The maximum number of channel state information reports configured. c For cell indexing, To the number of communities served, k The channel state information report for carrying the received power of the Layer 1 reference signal or the Layer 1 signal-to-noise ratio is 0, otherwise it is 1, and y The value is 0 for non-periodic reports, 1 for semi-persistent reports transmitted on the physical uplink shared channel, 2 for semi-persistent reports transmitted on the physical uplink control channel, or 3 for periodic reports.

19. The apparatus according to claim 18, wherein, The channel state information report corresponding to the set of channel state information reports from a single point transmission has a higher priority than the channel state information report corresponding to the set of channel state information reports from multiple points of joint transmission, and the channel state information report corresponding to the single point transmission from the main point has a higher priority than the channel state information reports in the set of channel state information reports.

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