Method and apparatus for multiplexing and omitting channel state information

Abstract

A method for operating a UE for CSI reporting in a wireless communication system is provided. The method includes: receiving configuration information for CSI reporting from a BS, the CSI report including a first CSI part and a second CSI part, the second CSI part including a total of K across υ layers NZ non-zero coefficients; determine the total K NZ The priority value of each of the non-zero coefficients; the second CSI part is divided into group 0, group 1 and group 2, so that based on the determined total K NZ The invention relates to a method for transmitting the first CSI portion of the transmission line of the present invention to a BS according to the present invention; wherein the first CSI portion includes priority values ​​of non-zero coefficients, includes indicators of non-zero coefficients with higher priority values ​​in group 1, and includes indicators of non-zero coefficients with lower priority values ​​in group 2; and transmits UL control information (UCI) of group 0 or (group 0, group 1) or (group 0, group 1, group 2) including the second CSI part to a BS through an uplink (UL) channel.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communication systems, and more particularly, to channel state information (CSI) reporting and multiplexing. Background Art

[0002] In order to meet the requirements of increasing wireless data services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. 5G or pre-5G communication systems are also called "super 4G networks" or "post-LTE systems". Therefore, 5G communication systems are considered to be implemented in higher frequency (mmWave) bands, for example, 60GHz bands, to achieve higher data rates. In order to reduce the propagation loss of radio waves and increase the transmission distance, beamforming, massive multiple input multiple output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and large antenna technologies in 5G communication systems are discussed. In addition, in 5G communication systems, development of system network improvements based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communications, wireless backhaul, mobile networks, collaborative communications, coordinated multi-point (CoMP), receiving-end interference elimination, etc. is underway. In 5G systems, hybrid FSK and FQAM modulation and sliding window superposition coding (SWSC) have been developed as advanced coded modulation (ACM), and filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies.

[0003] The Internet is a human-centered connectivity network where humans generate and consume information, and is now evolving into the Internet of Things (IoT), in which distributed entities such as things exchange and process information without human intervention. The Internet of Everything, which combines IoT technology and big data processing technology through connection with cloud servers, has emerged. In order to realize the IoT, technical elements such as "sensing technology", "wired / wireless communication and network infrastructure", "service interface technology", and "security technology" are required, and sensor networks, machine-to-machine (M2M) communication, machine-type communication (MTC), etc. have been studied recently. This IoT environment can provide intelligent Internet technology services to create new value for human life by collecting and analyzing data generated between connected things. Through the integration and combination between existing information technology (IT) and various industrial applications, IoT can be applied to various fields, including smart homes, smart buildings, smart cities, smart cars or connected cars, smart grids, health care, smart appliances, and advanced medical services.

[0004] In line with this, various attempts have been made to apply 5G communication systems to IoT networks. For example, technologies such as sensor networks, MTC, and M2M communications can be implemented through beamforming, MIMO, and array antennas. The application of cloud RAN, which is the above-mentioned big data processing technology, can also be considered as an example of the fusion between 5G technology and IoT technology. Summary of the invention

[0005] Technical issues

[0006] Understanding and correctly estimating the channel is very important for efficient and effective wireless communication between a user equipment (UE) and a base station (e.g., a gNode B (gNB)). In order to correctly estimate the DL channel condition, the gNB may send a reference signal (e.g., CSI-RI) for DL ​​channel measurement to the UE, and the UE may report (e.g., feedback) information about the channel measurement, e.g., CSI, to the gNB. Using this DL channel measurement, the gNB is able to select appropriate communication parameters to efficiently and effectively perform wireless data communication with the UE.

[0007] Technical Solutions

[0008] In one embodiment, a UE for CSI reporting in a wireless communication system is provided. The UE includes a transceiver configured to receive configuration information for CSI reporting from a base station (BS). The UE also includes a processor operably connected to the transceiver. The processor is configured to determine a CSI report including a first CSI part and a second CSI part, the second CSI part including a total of K across v layers. NZ non-zero coefficients, where υ≥1 is the rank value. The processor is further configured to: determine a total of K NZ The priority value of each of the non-zero coefficients is determined, and the second CSI part is divided into group 0, group 1 and group 2, so that based on the determined total K NZ The method further comprises: providing a priority value of a non-zero coefficient of the transmission unit, including an indicator of a non-zero coefficient with a higher priority value in group 1, and including an indicator of a non-zero coefficient with a lower priority value in group 2, wherein the indicator of the non-zero coefficient comprises an amplitude coefficient indicator and a phase coefficient indicator respectively indicating an amplitude and a phase of the non-zero coefficient. The transceiver is further configured to transmit, to the BS through an uplink (UL) channel, UCI of group 0 or (group 0, group 1) or (group 0, group 1, group 2) including the second CSI part based on resource allocation for uplink control information (UCI) transmission.

[0009] In another embodiment, a BS in a wireless communication system is provided. The BS includes a processor configured to generate CSI configuration information. The BS also includes a transceiver operably connected to the processor. The transceiver is configured to transmit CSI configuration information for CSI reporting to a UE, wherein the CSI report includes a first CSI part and a second CSI part, and based on resource allocation for uplink control information (UCI) transmission, receive UCI of group 0 or (group 0, group 1) or (group 0, group 1, group 2) including the second CSI part from the UE through an uplink (UL) channel. The second CSI part includes a total of K across υ layers. NZ non-zero coefficients, each with a priority value, where v≥1 is the rank value. The second CSI part is divided into group 0, group 1, and group 2, such that based on a total of K NZ The priority value of each of the non-zero coefficients is determined, and the indicators of the non-zero coefficients with higher priority values ​​are included in group 1, and the indicators of the non-zero coefficients with lower priority values ​​are included in group 2, wherein the indicators of the non-zero coefficients include an amplitude coefficient indicator and a phase coefficient indicator indicating the amplitude and phase of the non-zero coefficients, respectively, and wherein the number of indicators included in group 1 and group 2 is respectively and in is a ceiling function and is the floor function.

[0010] In yet another embodiment, a method for operating a UE in a wireless communication system for CSI reporting is provided. The method includes: receiving configuration information for CSI reporting from a BS, determining a CSI report including a first CSI part and a second CSI part, the second CSI part including a total of K across v layers NZ non-zero coefficients, where υ≥1 is the rank value; determine the total K NZ The priority value of each of the non-zero coefficients; the second CSI part is divided into group 0, group 1 and group 2, so that based on the determined total K NZ The method comprises the steps of: determining a priority value of a non-zero coefficient, including an indicator of a non-zero coefficient with a higher priority value in group 1, and including an indicator of a non-zero coefficient with a lower priority value in group 2; and transmitting, based on resource allocation for uplink control information (UCI) transmission, group 0 or (group 0, group 1) or (group 0, group 1, group 2) of UCI including the second CSI part to the BS through an uplink (UL) channel, wherein the indicator of the non-zero coefficient includes an amplitude coefficient indicator and a phase coefficient indicator indicating an amplitude and a phase of the non-zero coefficient, respectively, and wherein the number of indicators included in group 1 and group 2 is respectively and in is a ceiling function and is the floor function.

[0011] Other technical features may be apparent to those skilled in the art from the following drawings, descriptions and claims.

[0012] Before the following detailed description, it may be advantageous to set forth the definitions of certain words and phrases used throughout the patent document. The term "connection" and its derivatives refer to any direct or indirect communication between two or more elements, whether or not these elements are in physical contact with each other. The terms "send", "receive" and "communication" and their derivatives cover direct and indirect communication. The terms "include" and "comprise" and their derivatives are intended to include without limitation. The term "or" is inclusive, meaning and / or. The phrase "associated with..." and its derivatives mean to include, include within, interconnect with, include, include within, connect to or connect with, connect to or connect with, communicate with, collaborate with, interweave, parallel, approach, bind to or bind with, have, have the characteristics of, have... and... The relationship etc. of. The term "controller" refers to any device, system or part thereof that controls at least one operation. Such a controller can be implemented in hardware or a combination of hardware and software and / or firmware. Whether local or remote, the functions associated with any particular controller can be centralized or distributed. The phrase "at least one of," when used with a list of items, means that different combinations of one or more of the listed items may be used, and only one of the items in the list may be required. For example, "at least one of A, B, and C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, and A, B, and C.

[0013] In addition, the various functions described below can be implemented or supported by one or more computer programs, each of which is formed by a computer-readable program code and implemented in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, processes, functions, objects, classes, examples, related data or parts thereof that are suitable for implementation with suitable computer-readable program codes. The phrase "computer-readable program code" includes any type of computer code, including source code, object code and executable code. The phrase "computer-readable medium" includes any type of medium that can be accessed by a computer, such as a read-only memory (ROM), a random access memory (RAM), a hard drive, a compact disc (CD), a digital video disc (DVD) or any other type of memory. "Non-transitory" computer-readable medium excludes wired, wireless, optical or other communication links that transmit instantaneous electrical signals or other instantaneous signals. Non-transitory computer-readable media include media that can permanently store data, and media that can store data and then rewrite data, such as rewritable optical discs or erasable storage devices.

[0014] Definitions for certain other words and phrases are provided throughout this patent document. Those of ordinary skill in the art should understand that in many, if not most, instances, such definitions apply to prior and future uses of such defined words and phrases.

[0015] Beneficial Effects

[0016] Embodiments of the present disclosure provide a method and apparatus for performing CSI reporting and multiplexing in a wireless communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] For a more complete understanding of the present disclosure and its advantages, reference is now made to the following description taken in conjunction with the accompanying drawings, in which like reference numerals represent like parts:

[0018] Figure 1 An example wireless network according to an embodiment of the present disclosure is shown;

[0019] Figure 2 An example gNB according to an embodiment of the present disclosure is shown;

[0020] Figure 3 An example UE according to an embodiment of the present disclosure is shown;

[0021] Figure 4A A high-level diagram of an Orthogonal Frequency Division Multiple Access transmit path according to an embodiment of the present disclosure is shown;

[0022] Figure 4B A high-level diagram of an OFDMA receive path according to an embodiment of the present disclosure is shown;

[0023] Figure 5 An example of a transmitter block diagram for a PDSCH in a subframe according to an embodiment of the present disclosure is shown;

[0024] Figure 6 An example of a receiver block diagram for PDSCH in a subframe according to an embodiment of the present disclosure is shown;

[0025] Figure 7 An example of a transmitter block diagram for a PUSCH in a subframe according to an embodiment of the present disclosure is shown;

[0026] Figure 8 An example of a receiver block diagram for PUSCH in a subframe according to an embodiment of the present disclosure is shown;

[0027] Fig. 9 shows an example multiplexing of two slices according to an embodiment of the present disclosure;

[0028] Fig.10 An example antenna block according to an embodiment of the present disclosure is shown;

[0029] Fig.11 An example antenna port layout according to an embodiment of the present disclosure is shown;

[0030] Fig.12 An example of a two-part UCI multiplexing process that may be performed by a UE according to an embodiment of the present disclosure is shown;

[0031] Fig.13 shows an example of a 3D grid of oversampled DFT beams according to an embodiment of the present disclosure;

[0032] Fig.14 An example of a two-part UCI multiplexing process that may be performed by a UE according to an embodiment of the present disclosure is shown;

[0033] Fig.15 An example of a two-part UCI multiplexing process that may be performed by a UE according to an embodiment of the present disclosure is shown;

[0034] Fig.16 An example of a two-part UCI multiplexing process that may be performed by a UE according to an embodiment of the present disclosure is shown;

[0035] Fig.17 An example sorting scheme according to an embodiment of the present disclosure is shown;

[0036] Fig.18 An example of a two-part UCI multiplexing process that may be performed by a UE according to an embodiment of the present disclosure is shown;

[0037] Fig.19An example of a two-part UCI multiplexing process that may be performed by a UE according to an embodiment of the present disclosure is shown;

[0038] Fig. 20 A flow chart showing a method for transmitting an UL transmission including a CSI report that may be performed by a UE according to an embodiment of the present disclosure; and

[0039] Fig.21 A flow chart of another method for receiving a UL transmission including a CSI report, which may be performed by a BS according to an embodiment of the present disclosure, is shown. DETAILED DESCRIPTION

[0040] The following discussion Figures 1 to 21 The various embodiments used to describe the principles of the present disclosure in this patent document are only for illustration and should not be interpreted in any way as limiting the scope of the present disclosure. Those skilled in the art will appreciate that the principles of the present disclosure can be implemented in any appropriately arranged system or device.

[0041] The following documents and standard descriptions are incorporated by reference into the present disclosure as if fully set forth herein: 3GPP TS 36.211 v16.0.0, "E-UTRA, Physical channels and modulation"; 3GPP TS 36.212 v16.0.0, "E-UTRA, Multiplexing and Channel coding"; 3GPP TS 36.213 v16.0.0, "E-UTRA, Physical Layer Procedures"; 3GPP TS 36.321 v16.0.0, "E-UTRA, Medium Access Control (MAC) protocol specification"; 3GPP TS 36.331 v16.0.0, "E-UTRA, Radio Resource Control (RRC) protocol specification"; TS 38.214 v16.0.0, “E-UTRA, NR, Physical layer procedures for data”; and 3GPP TS 38.212 v16.0.0, “E-UTRA, NR, Multiplexing and channel coding”.

[0042] From the following detailed description, only by describing a plurality of specific embodiments and realizations (including the best mode expected to be used for implementing the present disclosure), the aspects, features and advantages of the present disclosure will become apparent. The present disclosure is also capable of other and different embodiments, and its several details can be modified in various obvious aspects, all without departing from the spirit and scope of the present disclosure. Therefore, the drawings and description are to be regarded as illustrative in nature, rather than restrictive. The present disclosure is shown in the figures of the accompanying drawings by way of example and not by way of limitation.

[0043] In the following, for the sake of brevity, both FDD and TDD are considered as duplexing methods for DL ​​and UL signaling.

[0044] Although the following exemplary description and implementation assumes orthogonal frequency division multiplexing (OFDM) or orthogonal frequency division multiple access (OFDMA), the present disclosure may be extended to other OFDM-based transmission waveforms or multiple access schemes, such as filtered OFDM (F-OFDM).

[0045] To meet the increasing demand for wireless data services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also called "beyond 4G networks" or "post-LTE systems."

[0046] 5G communication systems are considered to be implemented in higher frequency (mmWave) bands, such as the 60 GHz band, to achieve higher data rates. To reduce the propagation loss of radio waves and increase transmission coverage, beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, large antenna technology, etc. are discussed in 5G communication systems.

[0047] In addition, in the 5G communication system, system network improvements are being developed based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul communication, mobile networks, collaborative communications, coordinated multi-point (CoMP) transmission and reception, interference mitigation and elimination, etc.

[0048] In 5G systems, hybrid frequency shift keying with quadrature amplitude modulation (FQAM) and sliding window superposition coding (SWSC) have been developed as adaptive modulation and coding (AMC) technologies, as well as filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies.

[0049] the following Figures 1 to 4BVarious embodiments are described for implementing and using Orthogonal Frequency Division Multiplexing (OFDM) or Orthogonal Frequency Division Multiple Access (OFDMA) communication techniques in wireless communication systems. Figures 1 to 3 The description is not meant to imply physical or architectural limitations on the implementable manner of different embodiments. Different embodiments of the present disclosure can be implemented in any appropriately arranged communication system. The present disclosure covers several components that can be combined or used in combination with each other, or can be operated as independent schemes.

[0050] Figure 1 An exemplary wireless network according to an embodiment of the present disclosure is shown. Figure 1 The embodiment of the wireless network shown is for illustration only. Other embodiments of the wireless network 100 may be used without departing from the scope of the present disclosure.

[0051] like Figure 1 As shown, the wireless network includes gNB 101, gNB 102, and gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one network 130, such as the Internet, a proprietary Internet Protocol (IP) network, or other data network.

[0052] gNB 102 provides wireless broadband access to network 130 for a first plurality of user equipment (UE) within coverage area 120 of gNB 102. The first plurality of UEs include: UE 111, which may be located in a small business (SB); UE 112, which may be located in an enterprise (E); UE 113, which may be located in a WiFi hotspot (HS); UE 114, which may be located in a first residence (R); UE 115, which may be located in a second residence (R); and UE 116, which may be a mobile device (M) such as a cellular phone, a wireless laptop computer, a wireless PDA, etc. gNB 103 provides wireless broadband access to network 130 for a second plurality of UEs within coverage area 125 of gNB 103. The second plurality of UEs includes UE 115 and UE 116. In some embodiments, one or more of gNB 101 to gNB 103 may communicate with each other and with UE 111 to UE 116 using 5G, LTE, LTE-A, WiMAX, WiFi, or other wireless communication technologies.

[0053] Depending on the network type, the term "base station" or "BS" may refer to any component (or set of components) configured to provide wireless access to a network, such as a transmission point (TP), a transmission-reception point (TRP), an enhanced base station (eNodeB or eNB), a 5G base station (gNB), a macro cell, a femto cell, a WiFi access point (AP), or other wireless enabling devices. A base station may provide wireless access according to one or more wireless communication protocols, for example, 5G 3GPP New Radio Interface / Access (NR), Long Term Evolution (LTE), Advanced LTE (LTE-A), High Speed ​​Packet Access (HSPA), Wi-Fi 802.11a / b / g / n / ac, etc. For convenience, the terms "BS" and "TRP" are used interchangeably in this patent document to indicate a network infrastructure component that provides wireless access to a remote terminal. In addition, depending on the network type, the term "user equipment" or "UE" may refer to any component, such as a "mobile station", "subscriber station", "remote terminal", "wireless terminal", "reception point", or "user equipment". For convenience, the term "user equipment" or "UE" is used in this patent document to refer to a remote wireless device that wirelessly accesses a BS, whether the UE is a mobile device (such as a mobile phone or smartphone) or is generally considered a fixed device (e.g., a desktop computer or a vending machine).

[0054] The dashed lines illustrate the approximate extents of coverage areas 120 and 125, which are shown as approximately circular for purposes of illustration and explanation only. It should be clearly understood that coverage areas associated with gNBs, such as coverage areas 120 and 125, may have other shapes, including irregular shapes, depending on the configuration of the gNB and changes in the radio environment related to natural and man-made obstacles.

[0055] As described in more detail below, one or more of UEs 111 to 116 include circuitry, programming, or a combination thereof for CSI reporting, the CSI reporting including: determining a CSI report including a first CSI part and a second CSI part, the second CSI part including a precoding matrix indicator (PMI), the PMI including a plurality of PMI components, some of which include subcomponents; determining priority values ​​for subcomponents in some of the PMI components; and dividing the second CSI part into group 0, group 1, and group 2, such that subcomponents of some of the plurality of PMI components are grouped into group 1 and group 2 based on their determined priority values. In some embodiments, one or more of gNBs 101 to 103 include circuitry, programming, or a combination thereof for CSI acquisition in a wireless communication system.

[0056] although Figure 1 An example of a wireless network is shown, but Figure 1Various changes may be made. For example, the wireless network may include any number of gNBs and any number of UEs in any suitable arrangement. In addition, gNB 101 may communicate directly with any number of UEs and provide wireless broadband access to network 130 to these UEs. Similarly, each gNB 102 and gNB 103 may communicate directly with network 130 and provide direct wireless broadband access to network 130 to the UEs. In addition, gNB 101, gNB 102 and / or gNB 103 may provide access to other or additional external networks such as an external telephone network or other types of data networks.

[0057] Figure 2 An exemplary gNB 102 according to an embodiment of the present disclosure is shown. Figure 2 The illustrated embodiment of gNB 102 is for illustration only, and Figure 1 gNB 101 and gNB 103 may have the same or similar configuration. However, gNBs have various configurations, and Figure 2 The scope of the present disclosure is not limited to any particular implementation of the gNB.

[0058] like Figure 2 As shown, gNB 102 includes multiple antennas 205a to 205n, multiple RF transceivers 210a to 210n, transmit (TX) processing circuitry 215, and receive (RX) processing circuitry 220. gNB 102 also includes a controller / processor 225, a memory 230, and a backhaul or network interface 235.

[0059] The RF transceivers 210a to 210n receive incoming RF signals from the antennas 205a to 205n, such as signals sent by UEs in the network 100. The RF transceivers 210a to 210n down-convert the incoming RF signals to produce IF or baseband signals. The IF or baseband signals are sent to the RX processing circuit 220, which generates processed baseband signals by filtering, decoding and / or digitizing the baseband or IF signals. The RX processing circuit 220 sends the processed baseband signals to the controller / processor 225 for further processing.

[0060] The TX processing circuit 215 receives analog or digital data (such as voice data, web data, email, or interactive video game data) from the controller / processor 225. The TX processing circuit 215 encodes, multiplexes, and / or digitizes the output baseband data to produce a processed baseband or IF signal. The RF transceivers 210a to 210n receive the output processed baseband or IF signals from the TX processing circuit 215 and up-convert the baseband or IF signals into RF signals that are transmitted via the antennas 205a to 205n.

[0061] The controller / processor 225 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 225 may control the RF transceivers 210a to 210n, the RX processing circuit 220, and the TX processing circuit 215 to receive forward channel signals and transmit reverse channel signals according to well-known principles. The controller / processor 225 may also support additional functions, such as more advanced wireless communication functions.

[0062] For example, the controller / processor 225 may support beamforming or directional routing operations to weight signals output from the plurality of antennas 205a to 205n differently to efficiently steer the output signals in a desired direction. Any of a variety of other functions may be supported in the gNB 102 by the controller / processor 225.

[0063] Controller / processor 225 is also capable of executing programs and other processes, such as an OS, that reside in memory 230. Controller / processor 225 may move data into or out of memory 230 as needed to execute a process.

[0064] The controller / processor 225 is also connected to a backhaul or network interface 235. The backhaul or network interface 235 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or via a network. The interface 235 can support communication via any appropriate wired or wireless connection. For example, when the gNB 102 is implemented as part of a cellular communication system (e.g., a system supporting 5G, LTE, or LTE-A), the interface 235 can allow the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the interface 235 can allow the gNB 102 to communicate with a larger network (such as the Internet) via a wired or wireless local area network or via a wired or wireless connection. The interface 235 includes any appropriate structure that supports communication via a wired or wireless connection (such as an Ethernet or RF transceiver).

[0065] Memory 230 is coupled to controller / processor 225. A portion of memory 230 may include RAM, and another portion of memory 230 may include flash memory or other ROM.

[0066] although Figure 2 An example of a gNB 102 is shown, but the Figure 2 For example, gNB 102 may include Figure 2Any number of each component shown. As a specific example, the access point can include multiple interfaces 235, and the controller / processor 225 can support routing functions for routing data between different network addresses. As another specific example, although shown as including a single TX processing circuit 215 example and a single RX processing circuit 220 example, the gNB 102 can include multiple TX processing circuit 215 examples and multiple RX processing circuit 220 examples (such as one example for each RF transceiver). In addition, Figure 2 The various components in may be combined, further subdivided, or omitted, and additional components may be added according to specific needs.

[0067] Figure 3 An exemplary UE 116 is shown in accordance with an embodiment of the present disclosure. Figure 3 The embodiment of UE 116 shown is for illustration only, and Figure 1 UE 111 to UE 115 may have the same or similar configuration. However, UE has various configurations, and Figure 3 The scope of the present disclosure is not limited to any particular implementation of the UE.

[0068] like Figure 3 As shown, UE 116 includes antenna 305, radio frequency (RF) transceiver 310, TX processing circuit 315, microphone 320, and receive (RX) processing circuit 325. UE 116 also includes speaker 330, processor 340, input / output (I / O) interface (IF) 345, touch screen 350, display 355, and memory 360. Memory 360 includes operating system (OS) 361 and one or more applications 362.

[0069] RF transceiver 310 receives an incoming RF signal from antenna 305 transmitted by a gNB of network 100. RF transceiver 310 down-converts the incoming RF signal to produce an intermediate frequency (IF) or baseband signal. The IF or baseband signal is sent to RX processing circuitry 325, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. RX processing circuitry 325 sends the processed baseband signal to speaker 330 (e.g., for voice data) or controller / processor 340 for further processing (such as for web browsing data).

[0070] The TX processing circuit 315 receives analog or digital voice data from the microphone 320, or receives other outgoing baseband data (such as web data, email, or interactive video game data) from the processor 340. The TX processing circuit 315 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 310 receives the outgoing processed baseband or IF signal from the TX processing circuit 315 and up-converts the baseband or IF signal to an RF signal that is transmitted via the antenna 305.

[0071] The processor 340 may include one or more processors or other processing devices and execute the OS 361 stored in the memory 360 to control the overall operation of the UE 116. For example, the processor 340 may control the RF transceiver 310, the RX processing circuit 325, and the TX processing circuit 315 to receive forward channel signals and transmit reverse channel signals according to well-known principles. In some embodiments, the processor 340 includes at least one microprocessor or microcontroller.

[0072] The processor 340 is also capable of executing other processes and programs resident in the memory 360, such as processing for CSI feedback on the uplink channel. The processor 340 can move data into or out of the memory 360 by performing processing as needed. In some embodiments, the processor 340 is configured to execute the application 362 based on the OS 361 or in response to a signal received from the gNB or operator. The processor 340 is also coupled to the I / O interface 345, which enables the UE 116 to connect to other devices, such as laptops and handheld computers. The I / O interface 345 is the communication path between these accessories and the processor 340.

[0073] Processor 340 is also coupled to touch screen 350 and display 355. An operator of UE 116 may input data into UE 116 using touch screen 350. Display 355 may be a liquid crystal display, light emitting diode display, or other display capable of presenting text (such as from a website) and / or at least limited graphics.

[0074] Memory 360 is coupled to processor 340. A portion of memory 360 may include random access memory (RAM), and another portion of memory 360 may include flash memory or other read-only memory (ROM).

[0075] although Figure 3 An example of UE 116 is shown, but the Figure 3 Make various changes. For example, Figure 3The various components in the embodiment may be combined, further subdivided, or omitted, and additional components may be added as required. As a specific example, processor 340 may be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). In addition, although Figure 3 The UE 116 is shown configured as a mobile phone or smart phone, but the UE may be configured to operate as other types of mobile or stationary devices.

[0076] Figure 4A This is a top-level diagram of a transmit path circuit. For example, the transmit path circuit may be used for orthogonal frequency division multiple access (OFDMA) communication. Figure 4B is a top-level diagram of a receive path circuit. For example, the receive path circuit can be used for orthogonal frequency division multiple access (OFDMA) communication. Figure 4A and Figure 4B In the embodiment, for downlink communication, the transmit path circuit may be implemented in the base station (gNB) 102 or the relay station, and the receive path circuit may be implemented in the user equipment (e.g., Figure 1 In other examples, for uplink communications, the receive path circuit 450 may be implemented in a base station (e.g., Figure 1 The transmission path circuit may be implemented in a user equipment (e.g., a gNB 102) or a relay station, and the transmission path circuit may be implemented in a user equipment (e.g., Figure 1 is implemented in the user device 116).

[0077] The transmit path circuitry includes a channel coding and modulation block 405, a serial to parallel (S to P) block 410, an inverse fast Fourier transform (IFFT) block of size N 415, a parallel to serial (P to S) block 420, an add cyclic prefix block 425, and an upconverter (UC) 430. The receive path circuitry 450 includes a downconverter (DC) 455, a remove cyclic prefix block 460, a serial to parallel (S to P) block 465, a fast Fourier transform (FFT) block of size N 470, a parallel to serial (P to S) block 475, and a channel decoding and demodulation block 480.

[0078] At least some of the components in Figures 4A400 and 4B 450 may be implemented in software, while other components may be implemented in configurable hardware or a combination of software and configurable hardware. In particular, it should be noted that the FFT block and IFFT block described in the present disclosure may be implemented as a configurable software algorithm, wherein the value of the size N may be modified according to the implementation.

[0079] In addition, although the present disclosure relates to implementations of fast Fourier transform and inverse fast Fourier transform, this is merely illustrative and should not be construed as limiting the scope of the present disclosure. It is understood that in alternative implementations of the present disclosure, the fast Fourier transform function and the inverse fast Fourier transform function can be easily replaced by a discrete Fourier transform (DFT) function and an inverse discrete Fourier transform (IDFT) function, respectively. It is understood that for DFT and IDFT functions, the value of the N variable can be any integer (i.e., 1, 4, 3, 4, etc.), while for FFT and IFFT functions, the value of the N variable can be any integer as a power of 2 (i.e., 1, 2, 4, 8, 16, etc.).

[0080] In the transmit path circuit 400, the channel coding and modulation block 405 receives the set of information bits and applies coding (e.g., LDPC coding) and modulation (e.g., quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) to the input bits to produce a frequency domain modulation label sequence. The serial to parallel block 410 converts (i.e., demultiplexes) the serial modulation labels into parallel data to produce N parallel label streams, where N is the IFFT / FFT size used in the BS 102 and the UE 116. The size-N IFFT block 415 then performs an IFFT operation on the N parallel label streams to produce a time domain output signal. The parallel to serial block 420 converts (i.e., multiplexes) the parallel time domain output labels from the size-N IFFT block 415 to produce a serial time domain signal. The add cyclic prefix block 425 then inserts a cyclic prefix into the time domain signal. Finally, upconverter 430 modulates (ie, upconverts) the output of add cyclic prefix block 425 to RF frequency for transmission via a wireless channel. The signal may also be filtered at baseband before being converted to RF frequency.

[0081] The transmitted RF signal reaches UE 116 after passing through the wireless channel and performs the reverse operation relative to the operation at gNB 102. Downconverter 455 downconverts the received signal to baseband frequency, and remove cyclic prefix block 460 removes the cyclic prefix to produce a serial time domain baseband signal. Serial to parallel block 465 converts the time domain baseband signal into parallel time domain signals. Then, FFT block 470 of size N performs an FFT algorithm to produce N parallel frequency domain signals. Parallel to serial block 475 converts the parallel frequency domain signals into a sequence of modulated data labels. Channel decoding and demodulation block 480 demodulates and decodes the modulation labels to recover the original input data stream.

[0082] Each of gNB 101 to gNB 103 may implement a transmission path similar to that for transmitting in the downlink to user equipment 111 to user equipment 116, and may implement a reception path similar to that for receiving in the uplink from user equipment 111 to user equipment 116. Similarly, each of user equipment 111 to user equipment 116 may implement a transmission path corresponding to the architecture for transmitting in the uplink to gNB 101 to gNB 103, and may implement a reception path corresponding to the architecture for receiving in the downlink from gNB 101 to gNB 103.

[0083] Use cases for 5G communication systems have been identified and described. These use cases can be roughly categorized into three different groups. In one example, enhanced mobile broadband (eMBB) is determined to meet high bit / second requirements with less stringent requirements for latency and reliability. In another example, ultra-reliable and low latency (URLL) is determined to have less stringent requirements for bits / second. In yet another example, massive machine type communication (mMTC) is determined to be a number of devices that can be as many as 100,000 to 1 million / km 2 , but the reliability / throughput / latency requirements may be less stringent. This case may also involve power efficiency requirements, as battery consumption can be minimized.

[0084] The communication system includes a downlink (DL) and an uplink (UL), where the downlink (DL) transmits signals from a transmission point such as a base station (BS) or NodeB to a user equipment (UE), and the uplink (UL) transmits signals from a UE to a reception point such as a NodeB. A UE (also commonly referred to as a terminal or mobile station) can be fixed or mobile and can be a cellular phone, a personal computer device, or an automatic device. An eNodeB, which is generally a fixed station, may also be referred to as an access point or other equivalent terms. For an LTE system, a NodeB is generally referred to as an eNodeB.

[0085] In a communication system such as an LTE system, a DL signal may include a data signal that transmits information content, a control signal that transmits DL control information (DCI), and a reference signal (RS) also known as a pilot signal. The eNodeB transmits data information through a physical DL shared channel (PDSCH). The eNodeB transmits DCI through a physical DL control channel (PDCCH) or an enhanced PDCCH (EPDCCH).

[0086] The eNodeB sends an acknowledgement in response to a data transport block (TB) transmission in the Physical Hybrid ARQ Indicator Channel (PHICH) from the UE. The eNodeB sends one or more of multiple types of RS including UE Common RS (CRS), Channel State Information RS (CSI-RS), or Demodulation RS (DMRS). CRS is sent on the DL system bandwidth (BW) and can be used by the UE to obtain channel estimates to demodulate data or control information or perform measurements. To reduce CRS overhead, the eNodeB may send CSI-RS with a smaller time domain and / or frequency domain density than CRS. DMRS can only be sent in the BW of the corresponding PDSCH or EPDCCH, and the UE can use DMRS to demodulate the data or control information in the PDSCH or EPDCCH, respectively. The transmission time interval for a DL channel is called a subframe and may have a duration of, for example, 1 millisecond.

[0087] DL signals also include the transmission of logical channels that carry system control information. When the DL signal transmits a master information block (MIB), the BCCH is mapped to a transmission channel called a broadcast channel (BCH); or when the DL signal transmits a system information block (SIB), the BCCH is mapped to a DL shared channel (DL-SCH). Most system information is included in different SIBs sent using DL-SCH. The presence of system information on the DL-SCH in a subframe can be indicated by transmitting a corresponding PDCCH for transmitting a codeword with a cyclic redundancy check (CRC) scrambled with a system information RNTI (SI-RNTI). Optionally, scheduling information for SIB transmissions can be provided in an earlier SIB, and scheduling information for the first SIB (SIB-1) can be provided by the MIB.

[0088] DL resource allocation is performed in units of subframes and physical resource blocks (PRBs). The transmission BW consists of frequency resource units called resource blocks (RBs). Each RB consists of subcarriers or resource elements (REs), such as 12 REs. One RB unit on a subframe is called a PRB. A total of 12 REs can be allocated to a UE for PDSCH transmission BW. M of RE PDSCH RBs.

[0089] The UL signal may include a data signal for transmitting data information, a control signal for transmitting UL control information (UCI), and a UL RS. The UL RS includes a DMRS and a sounding RS (SRS). The UE sends the DMRS only in the BW of the corresponding PUSCH or PUCCH. The eNodeB may use the DMRS to demodulate the data signal or the UCI signal. The UE sends the SRS to provide the eNodeB with UL CSI. The UE sends data information or UCI through its respective physical UL shared channel (PUSCH) or physical UL control channel (PUCCH). If the UE needs to send data information and UCI in the same UL subframe, the UE may multiplex both in the PUSCH. UCI includes: Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) information, used to indicate correct (ACK) or incorrect (NACK) detection of data TBs in PDSCH, or the absence of PDCCH detection (DTX); Scheduling request, used to indicate whether the UE has data in the UE's buffer; Rank Indicator (RI); and Channel State Information (CSI) for enabling the eNodeB to perform link adaptation for PDSCH transmission to the UE. HARQ-ACK information is also sent by the UE in response to detection of PDCCH / EPDCCH indicating release of semi-persistently scheduled PDSCH.

[0090] The UL subframe includes two time slots. Each time slot includes a symbols, UCI, DMRS or SRS. The frequency resource unit of UL system BW is RB. A total of 10 RBs are allocated to the UE for transmission BW. N of REs RB RBs. For PUCCH, N RB = 1. The last subframe number can be used to multiplex SRS transmissions from one or more UEs. The number of subframe numbers available for data / UCI / DMRS transmission is If the last subframe number is used to send SRS, then N SRS =1; otherwise N SRS =0.

[0091] Figure 5 An example of a transmitter block diagram 500 for PDSCH in a subframe according to an embodiment of the present disclosure is shown. Figure 5 The illustrated implementation of transmitter block diagram 500 is for illustration only. Figure 5 One or more of the components shown may be implemented in dedicated circuits configured to perform the functions described, or one or more of the components may be implemented by one or more processors executing instructions to perform the functions described. Figure 5 The scope of the present disclosure is not limited to any particular implementation of block diagram 500 .

[0092] like Figure 5 As shown, information bits 510 are encoded by an encoder 520 (such as a turbo encoder) and modulated by a modulator 530 (e.g., using quadrature phase shift keying (QPSK) modulation). A serial-to-parallel (S / P) converter 540 generates M modulation indices, which are then provided to a mapper 550 to map to REs selected by a transmission BW selection unit 555 for the allocated PDSCH transmission BW, a unit 560 applies an inverse fast Fourier transform (IFFT), and then a parallel-to-serial (P / S) converter 570 serializes the output to generate a time domain signal, filtering is applied by a filter 580, and a transmitted signal 590 is obtained. Additional functions, such as data scrambling, cyclic prefix insertion, time windowing, interleaving, and other functions are well known in the art and are not shown for the sake of brevity.

[0093] Figure 6 A receiver block diagram 600 for PDSCH in a subframe according to an embodiment of the present disclosure is shown. Figure 6 The implementation of diagram 600 shown in FIG. 6 is for illustration only. Figure 6 One or more of the components shown may be implemented in dedicated circuits configured to perform the functions described, or one or more of the components may be implemented by one or more processors executing instructions to perform the functions described. Figure 6 The scope of the present disclosure is not limited to any particular implementation of diagram 600 .

[0094] like Figure 6 As shown, received signal 610 is filtered by filter 620, RE 630 for the allocated receive BW is selected by BW selector 635, fast Fourier transform (FFT) is applied by unit 640, and the output is serialized by parallel-to-serial converter 650. Subsequently, demodulator 660 coherently demodulates the data signal by applying a channel estimate obtained from a DMRS or CRS (not shown), and decoder 670 (such as a turbo decoder) decodes the demodulated data to provide an estimate of the information data bits 680. For the sake of brevity, additional functions such as time windowing, cyclic prefix removal, descrambling, channel estimation, and deinterleaving are not shown.

[0095] Figure 7 A transmitter block diagram 700 for PUSCH in a subframe according to an embodiment of the present disclosure is shown. Figure 7 One or more of the components shown may be implemented in dedicated circuits configured to perform the functions described, or one or more of the components may be implemented by one or more processors executing instructions to perform the functions described. Figure 7 The implementation of block diagram 700 shown in FIG. 7 is for illustration only. Figure 7The scope of the present disclosure is not limited to any particular implementation of diagram 700 .

[0096] like Figure 7 As shown, information data bits 710 are encoded by an encoder 720 (such as a turbo encoder) and modulated by a modulator 730. A discrete Fourier transform (DFT) unit 740 applies DFT to the modulated data bits, a transmission BW selection unit 755 selects REs 750 corresponding to the allocated PUSCH transmission BW, a unit 760 applies IFFT, and after cyclic prefix insertion (not shown), filtering is applied by a filter 770, thereby obtaining a transmitted signal 780.

[0097] Figure 8 A receiver block diagram 800 for PUSCH in a subframe is shown according to an embodiment of the present disclosure. Figure 8 The illustrated implementation of block diagram 800 is for illustration only. Figure 8 One or more of the components shown may be implemented in dedicated circuits configured to perform the functions described, or one or more of the components may be implemented by one or more processors executing instructions to perform the functions described. Figure 8 The scope of the present disclosure is not limited to any particular implementation of diagram 800 .

[0098] like Figure 8 As shown, the received signal 810 is filtered by a filter 820. Subsequently, after removing the cyclic prefix (not shown), a unit 830 applies FFT, a receive BW selector 845 selects REs 840 corresponding to the allocated PUSCH receive BW, a unit 850 applies an inverse DFT (IDFT), a demodulator 860 coherently demodulates the data signal by applying a channel estimate obtained from a DMRS (not shown), and a decoder 870 (such as a turbo decoder) decodes the demodulated data to provide an estimate of the information data bit 880.

[0099] In the next generation of cellular systems, various use cases are envisioned that exceed the capabilities of LTE systems. A system (referred to as 5G or fifth generation cellular system) that is capable of operating both below 6 GHz and above 6 GHz (e.g., in the mmWave regime) is needed. In 3GPP TR 22.891, 74 5G use cases have been identified and described; these use cases can be roughly categorized into three different groups. The first group, referred to as “enhanced mobile broadband (eMBB)”, targets high data rate services with less stringent latency and reliability requirements. The second group, referred to as “ultra-reliable and low latency (URLL)”, targets applications with less stringent data rate requirements but low tolerance for latency. The third group, referred to as “massive machine type communications (mMTC)”, targets a large number of low-power device connections (such as one million / km 2 ), which have less stringent reliability, data rate, and latency requirements.

[0100] In order to enable 5G networks to support such diverse services with different quality of service (QoS), a method called network slicing has been confirmed in the 3GPP specification. In order to efficiently utilize PHY resources and multiplex various slices (with different resource allocation schemes, mathematical systems, and scheduling strategies) in DL-SCH, a flexible and independent frame or subframe design is utilized.

[0101] Fig. 9 An exemplary multiplexing of two slices 900 is shown in accordance with an embodiment of the present disclosure. Fig. 9 The multiplexing implementation of two slices 900 shown in FIG. 1 is for illustration only. Fig. 9 One or more of the components shown may be implemented in dedicated circuits configured to perform the functions described, or one or more of the components may be implemented by one or more processors executing instructions to perform the functions described. Fig. 9 The scope of the present disclosure is not limited to any particular implementation of the multiplexing of two slices 900 .

[0102] exist Fig. 9 Two exemplary examples of multiplexing two slices in a common subframe or frame are described in . In these exemplary embodiments, a slice may consist of one or two transmission instances, wherein one transmission instance includes a control (CTRL) component (e.g., 920a, 960a, 960b, 920b, or 960c) and a data component (e.g., 930a, 970a, 970b, 930b, or 970c). In embodiment 910, the two slices are multiplexed in the frequency domain, while in embodiment 950, the two slices are multiplexed in the time domain. The two slices may be sent using different mathematical sets.

[0103] The 3GPP specification supports up to 32 CSI-RS antenna ports, enabling the gNB to be equipped with a large number of antenna elements (such as 64 or 128). In this case, multiple antenna elements are mapped to one CSI-RS port. For next-generation cellular systems such as 5G, the maximum number of CSI-RS ports may remain the same or increase.

[0104] Fig.10 An exemplary antenna block 1000 is shown in accordance with an embodiment of the present disclosure. Fig.10 The illustrated embodiment of antenna block 1000 is for illustration only. Fig.10 The scope of the present disclosure is not limited to any particular implementation of antenna block 1000 .

[0105] For millimeter wave (mmWave) bands, although the number of antenna elements can be larger for a given form factor, the number of CSI-RS ports that can correspond to the number of digital precoding ports tends to be limited due to hardware constraints (such as the feasibility of installing a large number of ADCs / DACs at mmWave frequencies), such as Fig.10 As shown in Figure 1. In this case, one CSI-RS port is mapped to a large number of antenna elements that can be controlled by a set of analog phase shifters. Then, one CSI-RS port can correspond to a subarray that produces a narrow analog beam through analog beamforming. The analog beam can be configured to scan over a wider angle range by changing the phase shifter set over the index or subframe. The number of subarrays (equal to the number of RF chains) is proportional to the number of CSI-RS ports N. CSI-PORT The number of digital beamforming units is the same as N CSI-PORT A linear combination is performed on the analog beams to further increase the precoding gain. While the analog beams are wideband (and therefore not frequency selective), the digital precoding can vary across frequency subbands or resource blocks.

[0106] All the following components and embodiments are applicable to UL transmission with CP-OFDM (Cyclic Prefix OFDM) waveform as well as DFT-SOFDM (DFT Spread OFDM) and SC-FDMA (Single Carrier FDMA) waveform. In addition, all the following components and embodiments are applicable to UL transmission when the scheduling unit is one subframe (which may be composed of one or more time slots) or one time slot in time.

[0107] In the present disclosure, the frequency resolution (reporting granularity) and frequency span (reporting bandwidth) of CSI reports may be defined in terms of frequency "sub-bands" and "CSI reporting bands" (CRBs), respectively.

[0108] The subband for CSI reporting is defined as a set of consecutive PRBs, where PRB represents the minimum frequency unit for CSI reporting. For a given DL system bandwidth value, the number of PRBs in a subband can be fixed, semi-statically configured via higher layer / RRC signaling, or dynamically configured via L1 DL control signaling or MAC control element (MAC CE). The number of PRBs in a subband can be included in the CSI reporting settings.

[0109] "CSI reporting band" is defined as a set / aggregation of contiguous or non-contiguous subbands where CSI reporting is performed. For example, the CSI reporting band may include all subbands within the DL system bandwidth, which may also be referred to as "full band". Alternatively, the CSI reporting band may include only a set of subbands within the DL system bandwidth, which may also be referred to as "partial band".

[0110] The term "CSI reporting frequency band" is used only as an example to indicate the functionality. Other terms such as "CSI reporting subband set" or "CSI reporting bandwidth" may also be used.

[0111] Regarding UE configuration, the UE may be configured with at least one CSI reporting band. This configuration may be semi-static (via higher layer or RRC signaling) or dynamic (via MAC CE or L1DL control signaling). When multiple (N) CSI reporting bands are configured (e.g., via RRC signaling), the UE may report CSI associated with n≤N CSI reporting bands. For example, >6GHz, larger system bandwidths may require multiple CSI reporting bands. The value of n may be configured semi-statically (via higher layer or RRC signaling) or dynamically (via MAC CE or L1DL control signaling). Optionally, the UE may report a recommended value of n via the UL channel.

[0112] Therefore, the CSI parameter frequency granularity can be defined per CSI reporting band as follows. n When there are multiple subbands, the CSI parameter configuration has M n When the CSI reporting frequency band has M subbands, the n When each subband in the subband reports a CSI parameter, the CSI parameter configuration has M n The CSI reporting frequency band for each sub-band is the “sub-band” of the frequency band.

[0113] Fig.11 An exemplary antenna port layout 1100 is shown in accordance with an embodiment of the present disclosure. Fig.11 The illustrated embodiment of antenna port layout 1100 is for illustration only. Fig.11The scope of the present disclosure is not limited to any particular implementation of the antenna port layout 1100 .

[0114] like Fig.11 As shown, N 1 and N 2 are the number of antenna ports with the same polarization in the first dimension and the second dimension, respectively. For a 2D antenna port layout, N 1 >1,N 2 >1; for 1D antenna port layout, N 1 >1,N 2 = 1. Therefore, for the dual-polarized antenna port layout, the total number of antenna ports is 2N 1 N 2 .

[0115] In the 3GPP NR specification, when the UE is configured with the higher layer parameter codebookType set to 'type II' or 'type II-PortSelection', each PMI value corresponds to a codebook index i 1 and i 2 When codebookType = 'typeII', the first PMI i 1 Includes components common to both layers (i.e., if the UE reports RI=2, then both layers report together), indicating:

[0116] Including N 1 N 2 Orthogonal basis set of orthogonal discrete Fourier transform (DFT) beams / vectors (using indicated rotation factors (q 1 ,q 2 ) indicator i 1,1 instructions), and

[0117] ·N 1 N 2 L in beam / vector selection (using indicator i 1,2 and two layer-specific (i.e., if the UE reports RI=2, then reporting is performed for each of the two layers) components indicating:

[0118] oThe strongest coefficient (using indicator i 1,3,1 and i 1,3,2 instructions), and

[0119] o WB Amplitude Coefficient (Use the indicator i 1,4,1 and i 1,4,2 instruct).

[0120] When codebookType = 'typeII-PortSelection', the first PMI i 1 Includes a layer-common (i.e., if the UE reports RI=2, the report is common to both layers) component indicating P CSI-RS / 2 L in port selection (use indicator i 1,1 instruct).

[0121] N 1 and N 2 The value of is configured using the higher layer parameter n1-n2-codebookSubsetRestriction. The configuration for a given number of CSI-RS ports supported (N 1 ,N 2 ) and the corresponding value (O 1 ,O 2 ). The number of CSI-RS ports is 2N 1 N 2 The number of CSI-RS ports is determined by P CSI-RS ∈{4,8,12,16,24,32} as configured by the higher layer parameter nrofPorts. The value of L is configured using the higher layer parameter numberOfBeams.

[0122] If codebookType is set to 'typeII', the first PMI i 1 Depend on

[0123] Given

[0124] If codebookType is set to 'typeII-PortSelection', the first PMI i 1 Depend on Given.

[0125] Second PMI

[0126]

[0127] Includes two layer-specific components that indicate:

[0128] Use indicator i 2,1,1 and i 2,1,2 Indicated SB phase coefficient c l,i ,as well as

[0129] Use indicator i 2,2,1 and i 2,2,2 Indicated SB amplitude coefficient (It can be turned on or off by RRC signaling via subbandAmplitude).

[0130] The first PMI is reported in a wideband (WB) manner, and the second PMI may be reported in a wideband or subband (SB) manner.

[0131] Fig.12 An exemplary two-part UCI multiplexing process 1200 that may be performed by a UE, such as UE 116 , according to an embodiment of the present disclosure is shown. Fig.12 The implementation of the two-part UCI multiplexing process 1200 shown in FIG. 1 is for illustration only. Fig.12 The scope of the present disclosure is not limited to any particular implementation of process 1200 .

[0132] like Fig.12 As shown, when codebookType = 'typeII' or 'typeII-PortSelection', two parts of UCI multiplexing 1200 are used to report type II CSI on PUSCH (or PUCCH), where:

[0133] CQI, RI and (N 0,1 ,N 0,2 ) are multiplexed and encoded together in Part 1, where N 0,1 and N 0,2 indicates the non-zero WB amplitude reported for layer 1 and layer 2 respectively (i.e. ); and

[0134] The remaining CSI is multiplexed and encoded together in Part 2, where the remaining CSI includes the first PMIi 1 and the second PMI (i 2 ). It may also include a layer indicator (LI).

[0135] If the UE is configured with more than one CSI-RS resource, the 1st UCI part may also include CRI. When cqi-FormatIndicator = widebandCQI, the CQI reported in the 1st UCI part corresponds to WB CQI; and when cqi-FormatIndicator = subbandCQI, the CQI reported in the 1st UCI part corresponds to WB CQI and SB differential CQI, where WB CQI is reported for all SBs, and SB differential CQI is reported for each SB, and the number of SBs (or SB index sets) is configured to the UE.

[0136] Based on the values ​​reported in Part 1 (N 0,1 ,N 0,2), determine the CSI report payload (bits) for part 2. In particular, the second PMI i is reported only for coefficients whose corresponding reported WB amplitude is non-zero 2 The amount.

[0137] As described in U.S. patent application serial number 15 / 490,561, filed on April 18, 2017, entitled “Method and Apparatus for Explicit CSI Reporting in Advanced Wireless Communication Systems,” which is incorporated herein by reference in its entirety, a UE is configured with high-resolution (e.g., Type II) CSI reporting, wherein a linear combination-based Type II CSI reporting framework is extended to include a frequency dimension in addition to a first antenna port dimension and a second antenna port dimension.

[0138] Fig.13 An exemplary 3D grid 1300 (first port dimension, second port dimension, frequency dimension) of an oversampled DFT beam is shown. Fig.13 The implementation of 3D grid 1300 shown in FIG. 1 is for illustration only. Fig.13 The scope of the present disclosure is not limited to any particular implementation of grid 1300 .

[0139] As shown in the figure, Fig.13 A 3D grid 1300 (first port dimension, second port dimension, frequency dimension) of an oversampled DFT beam is shown, where:

[0140] The first dimension is associated with the first port dimension;

[0141] The second dimension is associated with the second port dimension; and

[0142] • The third dimension is associated with the frequency dimension.

[0143] The base sets represented by the first port domain and the second port domain are respectively of length N 1 and length N 2 And the oversampling factors are O 1 and O 2 Similarly, the basis set of the frequency domain representation (i.e., the third dimension) is of length N 3 And the oversampling factor is O 3 In one example, O 1 =O 2 =O 3 =4. In another example, the oversampling factor O ibelongs to {2, 4, 8}. In another example, O 1 , O 2 and O 3 At least one of them is configured by a higher layer (via RRC signaling).

[0144] The UE is configured with the higher layer parameter CodebookType set to 'TypeII-Compression' or 'Type III' for enhanced Type II CSI reporting, where the precoder for all SBs and a given layer l=1,..,ν (where v is the associated RI value) is given by:

[0145]

[0146]

[0147] or

[0148]

[0149] in:

[0150] N1 is the number of antenna ports in the first antenna port dimension;

[0151] N2 is the number of antenna ports in the second antenna port dimension;

[0152] N3 is the number of SBs or frequency domain (FD) units / components (including the CSI reporting band) used for PMI reporting, which may be different from (eg, smaller than) the number of SBs used for CQI reporting.

[0153] a i It is 2N 1 N 2 ×1 column vector (Equation 1) or N 1 N 2 ×1 column vector (Equation 2),

[0154] b k YesN 3 ×1 column vector,

[0155] c l,i,m is a complex coefficient.

[0156] In the rest of the disclosure, the terms “SB for PMI reporting” and “FD unit for PMI reporting” are equivalent and thus may be used interchangeably.

[0157] In a variation, when subset K < 2LM coefficients (where K is fixed, configured by the gNB, or reported by the UE), then the coefficient c in Equation 1 or Equation 2 of the precoder equation l,i,mReplaced by v l,i,m ×c l,i,m ,in:

[0158] According to some embodiments of the present disclosure, if the coefficient c l,i,m Reported by UE, then v l,i,m =1.

[0159] Otherwise (i.e., c l,i,m Not reported by UE), v l,i,m =0.

[0160] v l,i,m =1 or 0 is in accordance with some embodiments of the present disclosure.

[0161] In a variation, the precoder equations of Eq. 1 or Eq. 2 are generalized to

[0162]

[0163] as well as

[0164]

[0165] Among them, for a given i, the number of basis vectors is M i And the corresponding basis vectors are {b i,m}. It should be noted that M i is the coefficient c reported by the UE for a given i l,i,m The number of i ≤M(where {M i} or ∑M i is fixed, configured by the gNB, or reported by the UE).

[0166] W l The columns of are normalized to norm 1. For rank R or R layers (υ = R), the precoding matrix is ​​given by Given. In the rest of the present disclosure, Equation 2 is assumed. However, the embodiments of the present disclosure are general and also apply to Equation 1, Equation 3, and Equation 4.

[0167] Here, L≤2N 1 N 2 And K≤N 3 If L = 2N 1 N 2 , then A is the identity matrix and is therefore not reported. Similarly, if K = N 3 , then B is the identity matrix and is therefore not reported. In the example, assume L < 2N 1 N 2 , to report the columns of A, an oversampled DFT codebook is used. For example, a i =vl,m , where the quantity v l,m Given by:

[0168]

[0169] Similarly, in the example, assuming K <N 3 , to report the columns of B, an oversampled DFT codebook is used. For example, b k =w k , where the quantity w k Given by the following equation

[0170]

[0171] In another example, a discrete cosine transform DCT basis is used to construct / report a basis B of the third dimension. The mth column of the DCT compression matrix is ​​simply given by:

[0172]

[0173] Where K = N 3 and m=0,…,N 3 -1.

[0174] Since DCT is applied to real-valued coefficients, DCT is applied to the real and imaginary components (of the channel or channel eigenvectors) respectively. Optionally, DCT is applied to the amplitude component and phase component (of the channel or channel eigenvectors) respectively. The use of DFT basis or DCT basis is for illustration purposes only. The present disclosure is applicable to any other basis vectors to construct / report A and B.

[0175] Additionally, in an optional manner, for reciprocity-based Type II CSI reporting, the UE is configured with a higher layer parameter CodebookType set to 'TypeII-PortSelection-Compression' or 'TypeIII-PortSelection' for enhanced Type II CSI reporting with port selection, where for all SBs and a given layer l=1,..,v (where v is the associated RI value), the precoder is determined by W l =AC l B H Given, where in addition to the matrix A including the port selection vector, N 1 、N 2 、N 3 , and c l,i,m The definition of is as above. For example, the L antenna ports or column vectors of A for each polarization are indexed by q 1 To choose, among (This requires bits), and the value of d is configured using the higher layer parameter PortSelectionSamplingSize, where d∈{1,2,3,4} and To report the columns of A, use the port selection vector, e.g., a i =v m , where the quantity v m YesP CSI-RS / 2 element column vector, contained in the element (m mod P CSI-RS / 2) and zeros elsewhere (where the first element is element 0).

[0176] At a high level, the precoder W l It can be described as follows.

[0177]

[0178] Where A=W 1 Corresponding to W in Type II CSI codebook 1 ,Right now And B = W f . The matrix consists of all the necessary linear combination coefficients (e.g., amplitude and phase or real or imaginary). It should be noted that the coefficient matrix LM coefficients are included. In the remainder of this disclosure, several schemes are proposed for uplink control information (UCI) carrying CSI calculated using the PMI determined according to the framework identified above (Equation 5).

[0179] In one example, the precoding matrix W indicating R=v layers (R) The PMI includes a first PMI i1 and a second PMI i2. The first PMI corresponds to a wideband (WB) component of the PMI, and the second PMI corresponds to a subband (SB) component of the PMI.

[0180] First PMI i 1 Includes the following components:

[0181] ·W 1 and W f An orthogonal basis set (for example, which can be indicated by the rotation factor (q 1 ,q 2 ,q 3 ) index i 1,1 to indicate), q i ∈{0,1,..,O i -1}; In one example, O 3 =1, so q 3 Can be fixed, for example, fixed to q 3= 0 and is not reported;

[0182] For W 1 The L beam selection and for W f The M beam selection (for example, it can use index i 1,2 to indicate);

[0183] Instructions include The strongest coefficient indicator (SCI) of the strongest coefficient among the 2LM coefficients (e.g., it can be obtained using index i 1,3 to indicate); and

[0184] For each layer l=1,…,v of N 0,l The index of the non-zero (NZ) coefficients (for example, it can be obtained by using the index i 1,4 to indicate).

[0185] Here, I 1,1 、i 1,2 、i 1,3 and i 1,4 Is the first PMI i 1 Use bitmap B with a length of 2LM l or composite index to explicitly report the index of the NZ coefficient, or for example based on a matrix including W 1 and / or W f The index of the NZ coefficients is implicitly derived from the amplitude or power of the beam. In the rest of this disclosure, it is assumed that bitmap B l .

[0186] Second PMI i 2 Includes the following components:

[0187] Coefficient c l,i,m The phase φ l,i,m (For example, it can use index i 2,1 to indicate); and

[0188] Coefficient c l,i,m The amplitude p l,i,m (For example, it can use index i 2,2 to indicate).

[0189] Here, I 2,1 and i 2,2 Is the second PMI i 2 In one example, the amplitude in and are the first amplitude component and the second amplitude component respectively.

[0190] In one example, the indices of the components SCI, NZ coefficients, amplitudes and phases are reported layer-specifically, that is, they are reported independently for each layer. 1,3 、i 1,4 、i 2,1 and i 2,2 For example, when v=2, these indices are further expressed as as well as It should be noted that 1,3,2 、i 1,4,2 ,、i 2,1,2 , and i 2,1,2 Only reported when RI=2 is reported.

[0191] In one example, by using the following mapping i 1 =i 1,1 、i 2 =i 1,2 、i 3 =i 1,3 、i 4 =i 1,4 、i 5 =i 2,1 and i 6 =i 2,2 , single PMI i=[i 1 ,i 2 ,i 3 ,i 4 ,i 5 ,i 6 ] is used to report the first PMI index i 1,1 、i 1,2 、i 1,3 and i 1,4 and the second PMI index i 2,1 and i 2,2 .

[0192] Fig.14 An exemplary two-part UCI process 1400 that may be performed by a UE, such as UE 116 , is shown in accordance with an embodiment of the present disclosure. Fig.14 The implementation of the two-part UCI multiplexing process 1400 shown in FIG. 1 is for illustration only. Fig.14 The scope of the present disclosure is not limited to any particular implementation of process 1400 .

[0193] In implementation mode 0, Fig.14 As shown, according to the framework mentioned above (Equation 5), a two-part UCI multiplexing process 1400 is used to multiplex and report CSI, where:

[0194] CQI, RI and (N 0,1 ,…,N 0,v ) are multiplexed and coded together in UCI part 1, where N 0,l indicates the number of non-zero (NZ) coefficients of layer 1; and

[0195] LI, first PMI i 1 and the second PMI (i 2 ) are multiplexed and encoded together in UCI part 2.

[0196] In a variation, LI is not included in UCI part 2. In another variation, LI is included in UCI part 1 (not in UCI part 2).

[0197] If the UE is configured with more than one CSI-RS resource, the part 1 UCI may also include CRI. When cqi-FormatIndicator = widebandCQI, the CQI reported in the part 1 UCI corresponds to the WB CQI, and when cqi-FormatIndicator = subbandCQI, the CQI reported in the part 1 UCI corresponds to the WB CQI and the SB differential CQI, where the WB CQI is reported for all SBs, and the SB differential CQI is reported for each SB, and the number of SBs (or a set of SB indices) is configured to the UE.

[0198] In one example, the maximum value of RI is 4. In another example, the maximum value of RI can be greater than 4. In the latter example, the CQI in UCI part 1 corresponds to a maximum of 4 layers mapped to the first codeword (CW1) or transport block (TB1), and if RI>4, a second CQI is reported in UCI part 2, which corresponds to an additional RI-4 layers mapped to the second codeword (CW2) or transport block (TB2).

[0199] Based on the (N reported in Part 1 0,1 ,…,N 0,v ) value, determines the CSI report payload (bits) of part 2. Specifically, the second PMI i is reported only for coefficients that are non-zero 2 The amount.

[0200] In Embodiment 0A (which is a variation of Embodiment 0), a two-part UCI multiplexing process 1400 is used to multiplex and report CSI according to the framework mentioned above (Equation 5), where

[0201] ·CQI, RI and are multiplexed and coded together in UCI Part 1, where N 0indicates the total number of NZ coefficients across v layers; and

[0202] LI, the first PMI i1 and the second PMI (i2) are multiplexed and encoded together in UCI part 2.

[0203] It should be noted that the NZ coefficients {N 0,l}, instead, report their sum (N 0 ). The remaining details of Example 0 are also applicable to this embodiment.

[0204] Fig.15 An example two-part UCI multiplexing process 1500 that may be performed by a UE, such as UE 116 , according to an embodiment of the present disclosure is shown. Fig.15 The embodiment of the two-part UCI multiplexing process 1500 shown in FIG. 1 is for illustration only. Fig.15 The scope of the present disclosure is not limited to any particular implementation of process 1500 .

[0205] In Example 1, Fig.15 As shown, according to the framework mentioned above (Equation 5), a two-part UCI multiplexing process 1500 is used to multiplex and report CSI, where:

[0206] ·Including CQI, RI and (N 0,1 ,…,N 0,v ) are multiplexed and coded together in the 1st UCI part, where N 0,l indicates the number of non-zero (NZ) coefficients of layer 1; and

[0207] ·Including LI, first PMI i 1 and the second PMI (i 2 )’s 2nd CSI part is multiplexed and encoded together in the 2nd UCI part.

[0208] The 2nd CSI part is divided into two segments or three groups.

[0209] Wideband or group G0 of the second CSI part: including LI and the first PMI i1; and

[0210] · The second CSI part subband: includes the second PMI i2, where the components of the second PMI are grouped into two groups

[0211] G1: includes the first set of second PMI components (e.g., the magnitude and phase of the first set of NZ coefficients)

[0212] G2: includes a second set of second PMI components (eg, magnitude and phase of a second set of NZ coefficients).

[0213] Here, the bitmap B of all layers l∈{1,…,v} l Included in the first PMI i 1 middle.

[0214] In one example, the amplitude and phase index associated with the strongest coefficient is also included in G1 or / and G2. In another example, the amplitude and phase index associated with the strongest coefficient is excluded from (not included in) G1 and / or G2.

[0215] In a variation, LI is not included in the 2nd UCI part wideband or group G0. In another variation, LI is included in the 1st UCI part (not included in the 2nd UCI part).

[0216] If the UE is configured with more than one CSI-RS resource, the 1st UCI part may also include CRI. When cqi-FormatIndicator = widebandCQI, the CQI reported in the 1st UCI part corresponds to WB CQI; and when cqi-FormatIndicator = subbandCQI, the CQI reported in the 1st UCI part corresponds to WB CQI and SB differential CQI, where WB CQI is reported for all SBs, and SB differential CQI is reported for each SB, and the number of SBs (or SB index sets) is configured for the UE.

[0217] In one example, the maximum value of RI is 4. In another example, the maximum value of RI may be greater than 4. In the latter example, the CQI in the 1st UCI part corresponds to up to 4 layers mapped to the first codeword (CW1) or the first transport block (TB1), and if RI>4, a second CQI is reported in the 2nd UCI part, which corresponds to another RI-4 layers mapped to the second codeword (CW2) or the second transport block (TB2).

[0218] In one example, the second CQI is included in the wideband of the second CSI part. In another example, the second CQI is included in the subband of the second CSI part. In one example, the second CQI is included in the wideband of the second CSI part. In another example, when cqi-FormatIndicator=subbandCQI, the second CQI includes the WB second CQI included in the wideband of the second CSI part and the SB differential second CQI included in the subband of the second CSI part.

[0219] Based on the (N reported in Part 1 0,1 ,…,N 0,v) value, determine the CSI report payload (bits) of part 2. Specifically, the second PMI i is reported only for non-zero coefficients 2 The amount.

[0220] Fig.16 An exemplary two-part UCI multiplexing process 1600 that may be performed by a UE, such as UE 116 , according to an embodiment of the present disclosure is shown. Fig.16 The embodiment of the two-part UCI multiplexing process 1600 shown in FIG. 1 is for illustration only. Fig.16 The scope of the present disclosure is not limited to any particular implementation of process 1600 .

[0221] In Example 1X, Fig.16 As shown, the CSI part 2 included in the two-part UCI multiplexing process 1600 is divided into two segments or three groups:

[0222] CSI part 2 wideband or group G0: includes LI, SD rotation factor indicating (q1, q2, q3), indication for W 1 SD-based indicator of L beam selection, and SCI (indicated via the first PMI i1); and

[0223] CSI Part 2 subband: includes the second PMI i2, where the components of the second PMI are grouped into two groups

[0224] G1: includes the first set of second PMI components (eg, the magnitude and phase of the first set of NZ coefficients) and an indication of ... f FD indicator for M beam selection (indicated by the first PMI i1,2);

[0225] G2: includes a second set of second PMI components (eg, magnitude and phase of a second set of NZ coefficients).

[0226] The remaining details of Example 1 are also applicable to this example.

[0227] Let (i,m) be the layer l. The coefficients of the matrix c l,i,m The index of . Let (i * ,m * ) is the strongest coefficient of layer l indicated by SCI The two groups G1 and G2 of the second PMI component in embodiment 1 or 1X are determined based on at least one of the following alternatives (Alt). One of these alternatives is fixed, or configured via higher layer signaling, or reported by the UE.

[0228] In one alternative Alt 1-0: Grouping is performed using the Strongest Coefficient Indicator (SCI). Grouping is performed using at least one of the sub-alternatives.

[0229] In an alternative Alt 1-0-0: Group G 1 Including row index i=i * Or the column index is m=m * The NZ coefficient c l,i,m The amplitude and phase of group G 2 Includes the magnitude and phase of the remaining NZ coefficients.

[0230] In an alternative Alt 1-0-1: Group G 1 Including row index i=i * The NZ coefficient c l,i,m The amplitude and phase of group G 2 Includes the magnitude and phase of the remaining NZ coefficients.

[0231] In an alternative Alt 1-0-2: Group G 1 Include column index m=m * The NZ coefficient c l,i,m The amplitude and phase of group G 2 Includes the magnitude and phase of the remaining NZ coefficients.

[0232] In an alternative scheme Alt 1-1: use FD beam index m∈{0,1,..,M-1} to group. Group G 1 Include column index m∈I 1 The NZ coefficient c l,i,m The amplitude and phase of group G 2 Include column index m∈I 2 The NZ coefficient c l,i,m The amplitude and phase of the sub-alternatives are used for at least one 1 and I 2 .

[0233] In an alternative Alt 1-1-0: I 1 is equal to the first half of the FD beam, and I 2 is equal to the second half of the FD beam, where the first half of the FD beam And the second half of the FD beam Alternatively, the first half of the FD beam And the second half of the FD beam

[0234] In an alternative Alt 1-1-1: I1 Equal to one of the two halves of the FD beam (with the strongest coefficient FD beam m * belongs to this half), and I 2 is equal to the other half of the FD beam, where the two halves of the FD beam are as explained in Alt 1-1-0.

[0235] In an alternative Alt 1-1-1X: I 1 is equal to the first half of the FD beam, and I 2 is equal to the second half of the FD beam, where the first and second halves of the FD beam are as explained in Alt 1-1-0. In addition, the one with the strongest coefficient FD beam m * Always include in I 1 regardless of whether it belongs to the first or second half of the FD beam.

[0236] In an alternative Alt 1-1-1Y: I 1 is equal to the first half of the FD beam, and I 2 is equal to the second half of the FD beam, where the first and second halves of the FD beam are as explained in Alt 1-1-0. In addition, the one with the strongest coefficient FD beam m * Always include in I 2 regardless of whether it belongs to the first or second half of the FD beam.

[0237] In an alternative Alt 1-1-2: I 1 is equal to the even-numbered FD beam, and I 2 Equal to the odd-numbered FD beam, i.e., I 1 ={0,2,…,}, and I 2 ={1,3,…}.

[0238] In an alternative Alt 1-1-2X: I 1 and I 2 As explained in Alt 1-1-2. In addition, the strongest coefficient FD beam m * Always include in I 1 regardless of whether it is an even or odd number.

[0239] In an alternative Alt 1-1-2Y: I 1 and I 2 As explained in Alt 1-1-2. In addition, the strongest coefficient FD beam m* Always include in I 2 regardless of whether it is an even or odd number.

[0240] In an alternative Alt 1-1-3: I 1 is equal to the odd-numbered FD beam, and I 2 is equal to the even-numbered FD beam, i.e., I 2 ={0,2,…,}, and I 1 ={1,3,…}.

[0241] In an alternative Alt 1-1-3X: I 1 and I 2 As explained in Alt 1-1-3. In addition, the strongest coefficient FD beam m * Always include in I 1 regardless of whether it is an even or odd number.

[0242] In an alternative Alt 1-1-3Y: I 1 and I 2 As explained in Alt 1-1-3. In addition, the strongest coefficient FD beam m * Always include in I 2 regardless of whether it is an even or odd number.

[0243] In an alternative Alt 1-1-4: If the strongest coefficient FD beam m * is an even number, then I 1 is equal to the even-numbered FD beam and I 2 Equal to the odd-numbered FD beam, i.e., I 1 ={0,2,…,},I 2 ={1,3,…}, and m * ∈I 1 ; and if the strongest coefficient FD beam m * is an odd number, then I 1 is equal to the odd-numbered FD beam and I 2 is equal to the even-numbered FD beam, i.e., I 2 ={0,2,…,},I 1 ={1,3,…}, and m * ∈I 1 .

[0244] In an alternative Alt 1-1-5: If the strongest coefficient FD beam m* is an odd number, then I 1 is equal to the even-numbered FD beam and I 2 Equal to the odd-numbered FD beam, i.e., I 1 ={0,2,…,},I 2 ={1,3,…}, and m * ∈I 2 ; and if the strongest coefficient FD beam m * is an even number, then I 1 is equal to the odd-numbered FD beam and I 2 is equal to the even-numbered FD beam, i.e., I 2 ={0,2,…,},I 1 ={1,3,…}, and m * ∈I 2 .

[0245] In an alternative Alt 1-1-6: I 1 is reported by the UE (I 2 = Not included in reported I 1 In one example, (I 1 This reporting is done via a bitmap of length M consisting of x ones, where the position of a one indicates I 1 In another example, (I 1 This reporting is done via a bitmap of length M including x zeros "0", where the position of the zero "0" indicates I 1 In another example, such reporting is done using Here, x is either unrestricted (can take any value in {1,…,M}) or fixed (e.g., or ) or a higher layer configured or reported by the UE. 1 It can be reported via CSI part 1 (multiplexed in UCI part 1) or CSI part 2 wideband (multiplexed in UCI part 2).

[0246] In an alternative Alt 1-1-7: I 1 is reported by the UE (I 2 = Not included in reported I 1 , the rest of the FD beam), where I 1 Includes the strongest coefficient FD beam m * About I 1The remaining details are the same as those in Alt1-1-6. Specifically, (I 1 The report is sent via a length of M-1 (minus 1 because m * Always include in I 1 ), or by using The combined index report of the units digit is performed.

[0247] In an alternative scheme Alt 1-2: Use SD beam index i∈{0,1,..,2L-1} to group. Group G 1 Include row index i∈I 1 The NZ coefficient c l,i,m The amplitude and phase of group G 2 Include row index i∈I 2 The NZ coefficient c l,i,m The amplitude and phase of the sub-alternatives are used for at least one 1 and I 2 .

[0248] In an alternative Alt 1-2-0: I 1 is equal to the first half of the SD beam, and I 2 is equal to the second half of the SD beam, where the first half of the SD beam I 1 = {0, 1, ..., L-1}, and the second half of the SD beam I 2 ={L,L+1,…2L-1}.

[0249] In an alternative Alt 1-2-1: I 1 Equal to the one of the two halves of the SD beam with the strongest coefficient SD Beam i * Included in it, and I 2 Equal to the other half of the SD beam, where the two halves of the SD beam are as explained in Alt 1-2-0.

[0250] In an alternative Alt 1-2-1X: I 1 and I 2 As explained in Alt 1-2-0. In addition, the strongest coefficient SD Beam i * Always include in I 1 regardless of whether it belongs to the first or second half of the SD beam.

[0251] In an alternative Alt 1-2-1Y: I 1 and I 2 As explained in Alt 1-2-0. In addition, the strongest coefficient SD Beam i * Always include in I 2 regardless of whether it belongs to the first or second half of the SD beam.

[0252] In an alternative Alt 1-2-2: I 1 is equal to the even-numbered SD beam, and I 2 is equal to the odd-numbered SD beam, i.e., I 1 ={0,2,…,}, and I 2 ={1,3,…}.

[0253] In an alternative Alt 1-2-2X: I 1 and I 2 As explained in Alt 1-2-2. In addition, the strongest coefficient SD Beam i * Always include in I 1 regardless of whether it is an even or odd number.

[0254] In an alternative Alt 1-2-2Y: I 1 and I 2 As explained in Alt 1-2-2. In addition, the strongest coefficient SD Beam i * Always include in I 2 regardless of whether it is an even or odd number.

[0255] In an alternative Alt 1-2-3: I 1 is equal to the odd-numbered SD beam, and I 2 is equal to the even-numbered SD beam, i.e., I 2 ={0,2,…,}, and I 1 ={1,3,…}.

[0256] In an alternative Alt 1-2-3X: I 1 and I 2 As explained in Alt 1-2-3. In addition, the strongest coefficient SD Beam i * Always include in I 1 regardless of whether it is an even or odd number.

[0257] In an alternative Alt 1-2-3Y: I 1 and I 2 As explained in Alt 1-2-3. In addition, the strongest coefficient SD Beam i * Always include in I2 regardless of whether it is an even or odd number.

[0258] In an alternative Alt 1-2-4: If the strongest coefficient SD Beam i * is an even number, then I 1 is equal to the even numbered SD beam and I 2 is equal to the odd-numbered SD beam, i.e., I 1 ={0,2,…,},I 2 ={1,3,…}, and i * ∈I 1 ; and if the strongest coefficient SD Beam i * is an odd number, then I 1 is equal to the odd numbered SD beam and I 2 is equal to the even-numbered SD beam, i.e., I 2 ={0,2,…,},I 1 ={1,3,…}, and i * ∈I 1 .

[0259] In an alternative Alt 1-2-5: If the strongest coefficient SD Beam i * is an odd number, then I 1 is equal to the even numbered SD beam and I 2 is equal to the odd-numbered SD beam, i.e., I 1 ={0,2,…,},I 2 ={1,3,…}, and i * ∈I 2 ; and if the strongest coefficient SD Beam i * is an even number, then I 1 is equal to the odd numbered SD beam and I 2 is equal to the even-numbered SD beam, i.e., I 2 ={0,2,…,},I 1 ={1,3,…}, and i * ∈I 2 .

[0260] In an alternative Alt 1-2-6: I 1 is reported by the UE (I 2 = reported I 1 In one example, (I 1This reporting is done via a bitmap of length 2L consisting of x "1"s, where the position of a "1" indicates I 1 In another example, (I 1 This reporting is done via a bitmap of length 2L including x zeros "0", where the position of the zero "0" indicates I 1 In another example, such a report is made using Here, x is unrestricted (can take any value in {1,…,2L}) or fixed (e.g., L) or a higher layer configured or reported by the UE. In addition, I 1 It can be reported via CSI part 1 (multiplexed in UCI part 1) or CSI part 2 wideband (multiplexed in UCI part 2).

[0261] In an alternative Alt 1-2-7: I 1 is reported by the UE (I 2 = reported I 1 The rest of the SD beam not included in 1 Includes the strongest coefficient SD Beam i * About I 1 The remaining details are the same as those in Alt 1-2-6. Specifically, (I 1 The report is sent via a length of M-1 (minus 1 because i * Always include in I 1 ), or by using The combined index report of the units digit is performed.

[0262] In an alternative Alt 1-3: use layer index l∈{0,1,..,ν-1} to group. Group G 1 Include layer index l∈I 1 The NZ coefficient c l,i,m The amplitude and phase of group G 2 Include layer index l∈I 2 The NZ coefficient c l,i,m The amplitude and phase of the sub-alternatives are used for at least one 1 and I 2 .

[0263] In an alternative Alt 1-3-0: I 1 is equal to the first half of the layer, and I 2 is equal to the second half of the layer, where the first half of the layer and the second half of the layer Alternatively, the first half of the layer and the second half of the layer

[0264] In an alternative Alt 1-3-1: I 1 is equal to the first layer (layer 0) and I 2 is equal to the remaining layers.

[0265] In an alternative Alt 1-4: Use a bitmap B indicating the indices of the NZ coefficients for each layer l ∈ {0, 1,.., ν - 1} l for grouping. At least one of the sub-alternatives is used for I 1 and I 2 .

[0266] In an alternative Alt 1-4-0: I 1 is equal to a subset of all FD beam indices m, and I 2 is equal to the remaining FD beam indices, such that the number of NZ coefficients (X 1 ) with FD beam indices in I 1 and the number of NZ coefficients (X 2 ) with FD beam indices in I 2 The absolute value of the difference between them is less than or less than or equal to a fixed threshold d, i.e., |X 1 - X 2 | ≤ d or |X 1 - X 2 | < d. In one example, d = 2L.

[0267] In an alternative Alt 1-4-1: I 1 is equal to a subset of all SD beam indices i, and I 2 is equal to the remaining SD beam indices, such that the number of NZ coefficients (X 1 ) with SD beam indices in I 1 and the number of NZ coefficients (X 2 ) with SD beam indices in I 2 The absolute value of the difference between them is less than or less than or equal to a fixed threshold d, i.e., |X 1 - X 2 | ≤ d or |X 1 - X 2 | < d. In one example, d = M.

[0268] In an alternative Alt 1-4-2: Except that I 1 includes having the strongest coefficients FD beam m * Outside of I 1 Is the same as Alt 1-4-0

[0269] In an alternative Alt 1-4-3: In addition to I 1 Includes the SD beam i with the strongest coefficient Is the same as Alt 1-4-1 * Outside of I 1 Is the same as Alt 1-4-1

[0270] Notation Indicates the floor function, which maps x to the smaller integer a such that a is the largest integer for which a < x. Similarly, the notation Indicates the ceiling function, which maps x to the larger integer a such that a is the smallest integer for which x < a. Additionally, the notation |x| indicates the absolute value of x

[0271] In Example 1A (which is a variation of Example 1 or 1X), a two-part UCI multiplexing process 1600 is used to multiplex and report CSI according to the framework (Equation 5) mentioned above, where:

[0272] · The CSI part 1 including CQI, RI, and Is multiplexed and encoded together in UCI part 1, where N 0 Indicates the total number of NZ coefficients across v layers; and

[0273] · The CSI part 2 including LI, the first PMI i1, and the second PMI (i2) is multiplexed and encoded together in UCI part 2

[0274] It should be noted that the number of NZ coefficients {N 0,l} for each layer is not reported in UCI part 1. Instead, their sum (N 0 ) is reported. The remaining details of Example 1 or 1X (including the two segments) also apply to this example

[0275] In Example 1B (which is a variation of Example 1 or 1X), as explained in Example 1 or 1X, a two-part UCI multiplexing process 1600 is used to multiplex and report CSI, except that the two groups G1 and G2 that make up the CSI part 2 subbands are determined based on (N 0,1 , …, N 0,v ) reported in UCI part 1. Specifically:

[0276] · G1: Includes the NZ coefficients c for all layers l ∈ {1, …, v} l,i,mthe amplitude and phase of the first half of ; and

[0277] G2: Contains the NZ coefficients c for all layers l∈{1,…,v} l,i,m The amplitude and phase of the second half of the

[0278] Assume N 0,l,1 and N 0,l,2 The number of NZ coefficients in the first and second halves of the NZ coefficients of layer 1 is respectively. Then, the value N is determined using at least one of the following examples: 0,l,1 and N 0,l,2 .

[0279] Ex 1B-0: and

[0280] Ex 1B-1: and

[0281] Ex 1B-2: and

[0282] Ex 1B-3: and

[0283] For each layer 1, the location or index of the NZ coefficient is known via the corresponding bitmap reported in the CSI Part 1 wideband. To determine the two halves of the NZ coefficient, NZ is indexed according to at least one of the following schemes: 0,l The NZ coefficients are sorted or numbered:

[0284] Scheme 1B-0: N is firstly transformed in the first dimension (or SD) and then in the second dimension (or FD). 0,l The NZ coefficients are ordered or numbered sequentially from 0 to N. 0,l –1. For a given (k) ,m (k) ), the sorted coefficient index is obtained by n (k) =2L l m (k) +i (k) Given, where index k = 0, 1, ..., N 0,l -1 is assigned so that n (k) It increases with the increase of k;

[0285] Scheme 1B-1: N is firstly transformed in the second dimension (or FD) and then in the first dimension (or SD). 0,l The NZ coefficients are ordered or numbered sequentially from 0 to N. 0,l–1. For a given (k) ,m (k) ), the sorted coefficient index is obtained by n (k) =M l i (k) +m (k) Given, where index k = 0, 1, ..., N 0,l -1 is assigned so that n (k) It increases with the increase of k.

[0286] 2L l and M l are the number of SD basis vectors and FD basis vectors of layer l, respectively.

[0287] Fig.17 An example two beam ordering (numbering) scheme 1700 is shown according to an embodiment of the present disclosure. Fig.17 The two beam ordering (numbering) schemes 1700 shown in the embodiments are for illustration only. Fig.17 The scope of the present disclosure is not limited to any particular implementation of scheme 1700.

[0288] In sub-example 1B-0, which is a variation of example 1B, two groups are identified as follows:

[0289] G1: for layer 1, the amplitude and phase of one of the two halves of the NZ coefficients to which the SCI of layer 1 belongs; and

[0290] G2: For layer 1, the amplitude and phase of the two halves of the NZ coefficients including the SCI of layer 1 that does not belong to the other half.

[0291] For example, G1 and G2 include the first and second halves of the NZ coefficients, respectively, where SCI belongs to the first half, and G1 and G2 include the second and first halves of the NZ coefficients, respectively, where SCI belongs to the second half.

[0292] In Sub-Example 1B-1, which is a variation of Example 1B, two groups are identified as follows:

[0293] G1: includes the SCI and NZ coefficients c for all layers l∈{1,…,v} l,i,m the amplitude and phase of the first half of ; and

[0294] G2: Contains the NZ coefficients c for all layers l∈{1,…,v} l,i,m The amplitude and phase of the second half of the

[0295] In Sub-Example 1B-2, which is a variation of Example 1B, two groups are identified as follows:

[0296] G1: contains the NZ coefficients c for all layers l∈{1,…,v} l,i,m The amplitude and phase of the SCI and the second half; and

[0297] G2: Contains the NZ coefficients c for all layers l∈{1,…,v} l,i,m The amplitude and phase of the first half.

[0298] In Sub-Example 1B-3, which is a variation of Example 1B, two groups are identified as follows:

[0299] G1: for layer l, the amplitude and phase of one of the two halves of the SCI and NZ coefficients of layer l; and

[0300] G2: For layer 1, the amplitude and phase of the SCI of layer 1 in the two halves of the NZ coefficients that do not belong to the other half.

[0301] For example, G1 and G2 include the first and second halves of the NZ coefficients, respectively, where SCI belongs to the first half, and G1 and G2 include the second and first halves of the NZ coefficients, respectively, where SCI belongs to the second half.

[0302] In Embodiment 1C, which is a variation of Embodiment 1A, the two-part UCI multiplexing process 1600 is used to multiplex and report CSI as explained in Embodiment 1A, except that the two groups G1 and G2 including the CSI Part 2 subbands are based on the NZ coefficients reported in UCI Part 1. Specifically:

[0303] G1: including N 0 NZ coefficient c l,i,m the amplitude and phase of the first half of ; and

[0304] G2: including N 0 NZ coefficient c l,i,m The amplitude and phase of the second half of the

[0305] Let N 0,1 and N 0,2 N 0 The number of NZ coefficients in the first half and the second half of the NZ coefficients. Then, the value N is determined using at least one of the following examples: 0,1 and N 0,2 .

[0306] Ex 1C-0: and

[0307] Ex 1C-1: and

[0308] Ex 1C-2: and

[0309] Ex 1C-3: and

[0310] For each layer l, the location or index of the NZ coefficient is known via the corresponding bitmap reported in the CSI Part 1 wideband. To determine the two halves of the NZ coefficient, the total N is quantized according to at least one of the following schemes: 0 The NZ coefficients are sorted or numbered:

[0311] ·Scheme 1C-0: In the following order, layer → SD → FD, N 0 The NZ coefficients are ordered or coded sequentially from 0 to N 0 –1. That is, the numbering is first done in the layer domain (across layers l=1..,ν), then in the SD, and then in the FD. For a given (k) ,i (k) ,m (k) ), the sorted coefficient index is obtained by n (k) =2L l νm (k) +νi (k) +l (k) Given, where index k = 0, 1, ..., N 0 -1 is assigned so that n (k) It increases with the increase of k;

[0312] · Scheme 1C-1: In the following order, layer → FD → SD, N 0 The NZ coefficients are ordered or coded sequentially from 0 to N 0 –1. That is, the numbering is first done in the layer domain (across layers l=1..,v), then in the FD, and then in the SD. For a given (k) ,i (k) ,m (k) ), the sorted coefficient index is obtained by n (k) =M l i (k) +νm (k) +l (k)Given, where index k = 0, 1, ..., N 0 -1 is assigned so that n (k) It increases with the increase of k.

[0313] Here, 2L l and M l are the numbers of SD basis vectors and FD basis vectors of layer 1, respectively. The remaining details of embodiment 1A or 1 or 1X (including two segments) are also applicable to this embodiment.

[0314] In Sub-Example 1C-0, which is a variation of Example 1C, two groups are identified as follows:

[0315] G1: includes SCI for all layers and N 0 NZ coefficient c l,i,m the amplitude and phase of the first half of ; and

[0316] G2: including N 0 NZ coefficient c l,i,m The amplitude and phase of the second half of the

[0317] In Sub-Example 1C-1, which is a variation of Example 1C, two groups are identified as follows:

[0318] G1: includes SCI for all layers and N 0 NZ coefficient c l,i,m the amplitude and phase of the second half of ; and

[0319] G2: including N 0 NZ coefficient c l,i,m The amplitude and phase of the first half.

[0320] Fig.18 An example two-part UCI multiplexing process 1800 that may be performed by a UE, such as UE 116 , according to an embodiment of the present disclosure is shown. Fig.18 The embodiment of the two-part UCI multiplexing process 1800 shown in FIG. 1 is for illustration only. Fig.18 The scope of the present disclosure is not limited to any particular implementation of process 1800 .

[0321] In Example 2, Fig.18 As shown, a two-part UCI multiplexing process 1800 is used to multiplex and report CSI according to the framework mentioned above (Equation 5), where:

[0322] ·Including CQI, RI and (N 0,1 ,…,N 0,v ) are multiplexed and coded together in UCI part 1, where N0,l indicates the number of non-zero (NZ) coefficients of layer 1; and

[0323] • CSI part 2 including LI, the first PMI i1 and the second PMI (i2) are multiplexed and encoded together in UCI part 2.

[0324] CSI Part 2 is divided into two sections:

[0325] CSI part 2 wideband: includes LI and first PMI i1 (except bitmap B l , which is alternatively included in CSI part 2); and

[0326] CSI part 2 subband: including bitmap B l and the second PMI i2, which are grouped into two groups:

[0327] G1: Contains the first bitmap B for all layers l∈{1,…,v} l,1 and a first set of second PMI components (eg, magnitude and phase of a first set of NZ coefficients);

[0328] G2: contains the second bitmap B for all layers l∈{1,…,v} l,2 and a second set of second PMI components (eg, magnitude and phase of a second set of NZ coefficients).

[0329] Here, the first image B l,1 and the second bitmap B l,2 is the bitmap B for layer l l The first group of second PMI components corresponds to the bitmap B l,1 , indicating the amplitude and phase of the first set of NZ coefficients, and the second set of second PMI components corresponding to the bitmap B l,2 The magnitude and phase of the second set of NZ coefficients indicated by l =B l,1 B l,2 In another example, B l =B l,2 B l,1 .

[0330] In one example, the amplitude and phase index associated with the strongest coefficient is also included in G1 and / or G2. In another example, the amplitude and phase index associated with the strongest coefficient is excluded from (not included in) G1 and / or G2.

[0331] In a variation, LI is not included in UCI part 2 wideband or group G0. In another variation, LI is included in UCI part 1 (not in UCI part 2).

[0332] If the UE is configured with more than one CSI-RS resource, the part 1 UCI may also include CRI. When cqi-FormatIndicator = widebandCQI, the CQI reported in the part 1 UCI corresponds to the WB CQI, and when cqi-FormatIndicator = subbandCQI, the CQI reported in the part 1 UCI corresponds to the WB CQI and the SB differential CQI, where the WB CQI is reported for all SBs, and the SB differential CQI is reported for each SB, and the number of SBs (or SB index sets) is configured to the UE.

[0333] In one example, the maximum value of RI is 4. In another example, the maximum value of RI can be greater than 4. In this latter example, the CQI in UCI part 1 corresponds to up to 4 layers mapped to the first codeword (CW1) or transport block (TB1), and if RI>4, a second CQI is reported in UCI part 2, which corresponds to an additional RI-4 layers mapped to the second codeword (CW2) or transport block (TB2). In one example, the second CQI is included in the CSI part 2 wideband. In another example, the second CQI is included in the CSI part 2 subband. In one example, the second CQI is included in the CSI part 2 wideband. In another example, when cqi-FormatIndicator=subbandCQI, the second CQI consists of a WB second CQI included in the CSI part 2 wideband and a SB differential second CQI included in the CSI part 2 subband.

[0334] Based on the (N reported in Part 1 0,1 ,…,N 0,v ) value, determines the CSI report payload (bits) of part 2. Specifically, the second PMI i is reported only for coefficients that are non-zero 2 The amount.

[0335] Fig.19 An example two-part UCI multiplexing process 1900 that may be performed by a UE, such as UE 116 , according to an embodiment of the present disclosure is shown. Fig.19 The embodiment of the two-part UCI multiplexing process 1900 shown in FIG. 1 is for illustration only. Fig.19 The scope of the present disclosure is not limited to any particular implementation of process 1900 .

[0336] In Example 2X, Fig.19 As shown, the CSI part 2 included in the two-part UCI multiplexing process 1900 is divided into two segments or three groups:

[0337] CSI part 2 wideband or group G0: includes LI, SD rotation factor indicating (q1, q2, q3), indication for W 1 SD-based indicator of L beam selection, and SCI (indicated via the first PMI i1); and

[0338] CSI part 2 subband: including bitmap B l and the second PMI i2, which are grouped into two groups:

[0339] G1: Contains the first bitmap B for all layers l∈{1,…,v} l,1 and the first set of second PMI components (eg, the magnitude and phase of the first set of NZ coefficients) and an indication for W f FD indicator for M beam selection (indicated by the first PMI i1,2);

[0340] G2: contains the second bitmap B for all layers l∈{1,…,v} l,2 and a second set of second PMI components (eg, magnitude and phase of a second set of NZ coefficients).

[0341] The remaining details of Example 2 are also applicable to this example.

[0342] The two groups G1 and G2 in embodiment 2 or 2X are determined based on at least one alternative (Alt 1-0 to Alt 1-4) in embodiment 1 or 1X or 1B or 1C or one of their sub-embodiments, except that each group also includes a corresponding bitmap B l,1 and B l,2 For example, regarding bitmap B l,1 and B l,2 The details are according to at least one of the following alternatives.

[0343] In an alternative Alt 2-0-0: B l,1 =B l,1,row B l,1,col or B l,1,col B l,1,row , where B l,1,row is a bitmap of length M, and B l,1,col is a bitmap of length 2L; and B l,2 It is a bitmap of length (2L-1)(M-1).

[0344] In an alternative Alt 2-0-1: B l,1 is a bitmap of length M; and B l,2 It is a bitmap of length 2L(M-1).

[0345] In an alternative Alt 2-0-2: Bl,1 is a bitmap of length 2L; and B l,2 It is a bitmap of length (2L-1)M.

[0346] In an alternative Alt 2-1: B l,1 is a bitmap of length 2Lx; and B l,2 is a bitmap of length 2L(Mx), where x is I 1 The number of indices included in .

[0347] In an alternative Alt 2-2: B l,1 is a bitmap of length Mx; and B l,2 is a bitmap of length M(2L-x), where x is I 1 The number of indices included in .

[0348] In an alternative Alt 2-3: If l is included in I 1 In, then B l,1 =B l is the bitmap for layer l, otherwise, B l,1 Not included in G 1 Similarly, if l is included in I 2 In, then B l,2 =B l is the bitmap for layer l, otherwise, B l,2 Not included in G 2 middle.

[0349] In an alternative Alt 2-4: B l,1 is a bitmap of length 2Lx; and B l,2 is a bitmap of length 2L(Mx), where x is I 1 The number of indices included in B. l,1 is a bitmap of length Mx; and B l,2 is a bitmap of length M(2L-x), where x is I 1 The number of indexes to include in .

[0350] In Embodiment 2A (which is a variation of Embodiment 2 or 2X), a two-part UCI multiplexing process 1900 is used to multiplex and report CSI according to the framework mentioned above (Eq. 5), where:

[0351] ·Including CQI, RI and The CSI part 1 of the UCI part 1 is multiplexed and coded together, where N 0 indicates the total number of NZ coefficients across v layers; and

[0352] • CSI part 2 including LI, the first PMI i1 and the second PMI (i2) are multiplexed and encoded together in UCI part 2.

[0353] It should be noted that the NZ coefficients {N 0,l}, instead, report their sum (N 0 ). The remaining details of Example 2 or 2X (including the two segments) also apply here.

[0354] In Example 3, the following quantification scheme was used to quantify / report K NZ The amplitude and phase of the NZ coefficients. The quantitative report of the NZ coefficient in is as follows:

[0355] The strongest coefficient index (i * ,m * )of Bit indicator. In one example, X=K NZ .

[0356] Strongest coefficient (hence its magnitude / phase is not reported)

[0357] Two antenna polarization specific reference amplitudes:

[0358] For the strongest coefficient The associated polarization, due to the reference amplitude Therefore no report

[0359] For other polarizations, the reference amplitude is quantized into A bits.

[0360] In one example, A=4, and the 4-bit amplitude alphabet is

[0361] ·For {c l,i,m ,(i,m)≠(i * ,m * )}:

[0362] For each polarization, the differential magnitude of the coefficient is calculated relative to the associated polarization-specific reference magnitude And quantized into B bits.

[0363] In one example, B=3, and the 3-bit amplitude alphabet is

[0364] It should be noted that the final quantization amplitude p l,i,m Depend on given by and the coefficients are given by Given.

[0365] It should be noted that In an alternative, the "zeros" in the 4-bit amplitude alphabet of the reference amplitude are removed and the associated codepoints are designated as "reserved", which means that the associated codepoints are not used in the reference amplitude report. For RI∈{2,3,4}, different layers are quantized independently.

[0366] Each phase is quantized to 8PSK (3 bits) or 16PSK (4 bits) (this is configurable). Note that the strongest coefficient is not Associated antenna polarization (at gNB) reporting reference amplitude For the other antenna polarization, the A-bit reference amplitude is reported The reporting of this reference amplitude for the other antenna polarization is performed according to at least one of the following alternatives.

[0367] In an alternative Alt 3-0: A reference amplitude for another antenna polarization is reported via UCI Part 1. In one example, this reporting is done separately as a separate UCI Part 1 parameter (CSI Part 1 parameter). In another example, this reporting is done jointly with another UCI Part 1 parameter (CSI Part 1 parameter). For example, the reference amplitude can be reported jointly with the number of NZ coefficients reported in UCI Part 1.

[0368] In an alternative Alt 3-1: A reference amplitude for another antenna polarization is reported via UCI Part 2 Wideband. In one example, this reporting is done separately as a separate UCI Part 2 Wideband parameter (CSI Part 2 Wideband parameter). In another example, this reporting is done jointly with another UCI Part 2 Wideband parameter (CSI Part 2 Wideband parameter). For example, the reference amplitude can be reported jointly with the SCI reported in UCI Part 2 Wideband.

[0369] In an alternative Alt 3-2: A reference amplitude for another antenna polarization is reported via UCI part 2 subband G1 or the first segment or the first group. In one example, this reporting is done separately as a separate UCI part 2 subband parameter (CSI part 2 subband parameter). In another example, this reporting is done jointly with another UCI part 2 subband parameter (CSI part 2 subband parameter). For example, the reference amplitude can be reported jointly with the differential amplitude reported in the UCI part 2 subband.

[0370] In an alternative Alt 3-3: A reference amplitude for another antenna polarization is reported via UCI part 2 subband G2 or a second segment or a second group. In one example, this reporting is done separately as a separate UCI part 2 subband parameter (CSI part 2 subband parameter). In another example, this reporting is done jointly with another UCI part 2 subband parameter (CSI part 2 subband parameter). For example, the reference amplitude can be reported jointly with the differential amplitude reported in the UCI part 2 subband.

[0371] will be associated with layer l∈{0,1,…,ν-1}, SD beam / basis i∈{0,1,..,2L-1} and FD beam / basis m∈{0,1,…,M l The associated non-zero (NZ) coefficient is denoted by c l,i,m , and denote the associated bitmap detached (including zero) as b l,i,m As explained in some embodiments of the present disclosure, the parameters in UCI Part 2 are divided into three groups, where Group G n has a higher priority than group G n+1 , where n=0,1.

[0372] In embodiment 4, according to a combination of embodiments 1X / 1C and Alt 3-2, the UE is configured to report CSI via a two-part UCI multiplexing process 1900, where:

[0373] Group G 0 At least including SD rotation factor, SD basis indicator and SCI;

[0374] Group G 1 At least the reference amplitude for the weaker polarization (see Alt 3-2), {c l,i,m :(l,i,m)∈G 1} and the magnitude and phase of the NZ coefficients and the FD basis indicator; and

[0375] Group G 2 At least include {c l,i,m :(l,i,m)∈G 2}The magnitude and phase of the NZ coefficients in .

[0376] In one example, the amplitude and phase index associated with the strongest coefficient is also included in G1 and / or G2. In another example, the amplitude and phase index associated with the strongest coefficient is excluded from (not included in) G1 and / or G2.

[0377] In a variant, LI is not included in group G0. In another variant, LI is included in UCI part 1 (not in G0).

[0378] The priority rule for determining G1 and G2 is according to at least one of the following alternatives.

[0379] In an alternative scheme Alt 4-0, the NZ LC coefficients are prioritized from high to low priority according to the (l,i,m) index triples. The highest priority coefficients belong to G1, and The coefficient with the lowest priority belongs to G2. The priority level is calculated as P(l,i,m)=2L·ν·F 1 (m)+v·F 2 (i)+l, where F 1 and F 2 is a fixed permutation function of the FD and SD indices. It should be noted that if there is no permutation in FD, then F 1 (m) = m. Similarly, if there is no permutation in SD, then F 2 (i) = i. In one example, the permutation function F 1 The FD index 0, 1, .., M-1 is replaced by 0, M-1, 1, M-2, 2, M-3, ..., which means that the priority of the middle or central FD base index is lower, so they will be discarded first. In another example, the replacement function F 1 Depend on In one example, the permutation function F 2 So that FD index 0,1,..,2L-1 is replaced by l * ,l * +L,l * +1,l * +L+1,…, where l * is the SD index of the strongest coefficient.

[0380] In an alternative Alt 4-1, according to Scheme 1C-0 or 1C-1, the NZ coefficient c l,i,m Sort sequentially from 0 to N 0 -1. Group G 1 At least the first sorted coefficients, and group G 2 The remaining second sorted coefficients are included.

[0381] In an alternative scheme Alt 4-2, the LC coefficients are prioritized from high to low priority according to the (l,i,m) index triples. The highest priority coefficients belong to G1, and The coefficient with the lowest priority belongs to G2. The priority level is calculated as P(l,i,m) defined in Alt4-0.

[0382] According to at least one of the following alternatives (see Embodiment 2 or 2X), the bitmap {b l,i,m} is included in at least one of the three groups.

[0383] In an alternative scheme Alt 4-3, the first v·2LM-X bits (i.e., the coefficients with high priority) of the value of P(l,i,m) are assigned to G 1 and the last X (i.e., the coefficient with low priority) according to the value of P(l,i,m) is assigned to G 2 In one example, this alternative is combined with Alt 4-0. In one example, In another example, In another example,

[0384] In an alternative Alt 4-4, the bitmap and coefficients are divided into M segments together (where M = the number of FD base indices). 1 Contains M 1 Segments and groups G 2 Contains M 2 segments, where M = M 1 +M 2 In one example, each segment contains a bitmap (or a portion of a bitmap) associated with all RI=v layers, all SD components and a single FD component (where the index is the same as the segment) and the corresponding coefficient amplitudes / phases. 1 The payload size of G is given by ν·2LM+XT, where T = the number of bits of amplitude and phase. 2 The payload size is X(a+b). In one example, this alternative is combined with Alt 4-1. In one example, X= In another example, X = . In another example,

[0385] In an alternative Alt 4-5, according to the first The ones place goes to G 1 and according to the last value of P(l,i,m) Classified as G 2 In one example, this alternative is combined with Alt 4-2.

[0386] In an alternative Alt 4-6, the first ν·LM bits of the value of P(l,i,m) are assigned to G 1 and the last ν·LM according to the value of P(l,i,m) is assigned to G 2In one example, this alternative is combined with Alt 4-0.

[0387] In an alternative Alt 4-7, the bitmap {b l,i,m} Included in G 0 middle.

[0388] In an alternative Alt 4-8, the bitmap {b l,i,m} Included in G 1 middle.

[0389] In embodiment A, when the CSI report on PUSCH (or optionally, on PUCCH) includes two parts, namely, part 1 CSI and part 2 CSI, the UE may omit (and therefore not report) a part of part 2 CSI. Omitting part 2 CSI is based on the priority order shown in Table 1 or Table 2, where N Rep is the number of CSI reports configured to be carried on PUSCH. Priority 0 is the highest priority and priority 2N Rep is the lowest priority, and CSI report n corresponds to a CSI with N Rep The nth minimum Pri in the CSI report iCSI CSI report of (y,k,c,s) values.

[0390] CSI report and priority value Pri iCSI (y,k,c,s)=2·N cells ·M s y+N cells ·M s ·k+M s c+s is associated, where:

[0391] y=0 for aperiodic CSI reporting to be carried on PUSCH, y=1 for semi-persistent CSI reporting to be carried on PUSCH, y=2 for semi-persistent CSI reporting to be carried on PUCCH, and y=3 for periodic CSI reporting to be carried on PUCCH;

[0392] k=0 for CSI report carrying L1-RSRP and k=1 for CSI report not carrying L1-RSRP;

[0393] c is the serving cell index, and N cells The value of the higher-layer parameter maxNrofServingCells;

[0394] s is reportConfigID, and M s It is the value of the higher layer parameter maxNrofCSI-ReportConfigurations.

[0395] If the first reported association value Pri iCSI (y, k, c, s) is lower than the associated value of the second report, then the first CSI report is considered to have priority over the second CSI report.

[0396] The subbands for a given CSI report n indicated by the higher layer parameter csi-ReportingBand are numbered consecutively in ascending order, where the lowest subband of csi-ReportingBand is subband 0. When part 2 CSI information is omitted for a particular priority level, the UE shall ignore all information at this priority level.

[0397] Table 1: Part 2 CSI priority reporting levels

[0398]

[0399] in:

[0400] If the CSI report is configured according to the FD compression framework (Eq. 5), then G 1 = the first group, and G 2 = the second group, as proposed in the present disclosure; and

[0401] Otherwise (if the CSI report is configured to include subband CSI for each subband independently, i.e. without any FD compression), then G 1 = even subband, and G 2 = odd subband.

[0402] Table 2: Part 2 CSI priority reporting levels

[0403]

[0404] in:

[0405] If the CSI report is configured according to the FD compression framework (Eq. 5), then G 0 = Group 1, G 1 = the second group, and G 2 = the third group, as proposed in the present disclosure; and

[0406] Otherwise (if the CSI report is configured to include subband CSI for each subband independently, i.e. without any FD compression), then G 0 =Broadband, G 1 = even subband, and G 2 = odd subband.

[0407] When a UE is scheduled to transmit a transport block on the PUSCH multiplexed with CSI reporting, Greater than When omitting part 2CSI, the parameter O is defined. CSI-2 , L CSI-2 , C UL-SCH , K r , Q' CSI-1 , Q' ACK and α.

[0408] Part 2CSI is omitted starting from the lowest priority level until the lowest priority level is reached, which results in Less than or equal to

[0409] When Part 2 CSI is transmitted on PUSCH without a transport block, the lower priority bits are omitted until the Part 2 CSI coding rate is below a threshold coding rate c1. T The following, including:

[0410]

[0411] - is the CSI offset value

[0412] -R is the signal coding rate in DCI

[0413] In a variation, the omission of Part 2 CSI is according to the priority order shown in Table 3.

[0414] Table 3: Priority reporting levels for Part 2 CSI

[0415]

[0416] In embodiment B, when the CSI report on PUSCH (or optionally on PUCCH) includes two parts, namely Part 1 CSI and Part 2 CSI, the UE may omit (and therefore not report) a part of Part 2 CSI. The UE reports the information whether a part of Part 2 CSI is omitted as part of the CSI part. Specifically, this reporting is done via an x-bit indication in UCI Part 1. Once the gNB decodes UCI Part 1, it knows the information about omitting UCI Part 2. At least one of the following alternatives is used for the x-bit indication.

[0417] In one alternative Alt B-0: x=1 and 1-bit indication indicates (A) no omission, ie, the complete UCI part 2 is reported; or (B) partial omission, where the partial omission is fixed (eg, the UCI part 2 subband is omitted).

[0418] In one alternative Alt B-1: x=1 and the 1-bit indication indicates (A) no omission, ie the complete UCI part 2 is reported; or (C) complete omission, ie the entire UCI part 2 is omitted (not reported).

[0419] In one alternative Alt B-2: x=1 and 1-bit indication indicates (B) partial omission, where the partial omission is fixed (eg, omitting the UCI part 2 subband); or (C) complete omission, ie, omitting the entire UCI part 2 (not reported).

[0420] In an alternative Alt B-3: x=2 and the 2-bit indication indicates (A) no omission, i.e., the complete UCI part 2 is reported; or (B) partial omission, where the partial omission is fixed (e.g., the UCI part 2 subband is omitted); or (C) complete omission, i.e., the entire UCI part 2 is omitted (not reported).

[0421] In an alternative Alt B-4: x=2 and the 2-bit indication indicates (A) no omission, i.e., the complete UCI part 2 is reported; or (B1) partial omission 1, where partial omission 1 is fixed (e.g., UCI part 2 subband group 2G2 is omitted); or (B2) partial omission 2, where partial omission 2 is fixed (e.g., UCI part 2 subband is omitted, i.e., both G1 and G2 are omitted); or (C) complete omission, i.e., the entire UCI part 2 is omitted (not reported).

[0422] Here, the two groups G1 and G2 are according to at least one embodiment / alternative / example in the present disclosure.

[0423] Any of the above-described variations may be used independently or in combination with at least one other variation.

[0424] Fig. 20 A flow chart of a method 2000 for operating a user equipment (UE) for channel state information (CSI) reporting in a wireless communication system, which may be performed by a UE (such as UE 116) according to an embodiment of the present disclosure, is shown. Fig. 20 The embodiment of method 2000 shown in FIG. 2 is for illustration only. Fig. 20 The scope of the present disclosure is not limited to any particular implementation.

[0425] like Fig. 20 As shown, method 2000 starts at step 2002. In step 2002, UE (e.g., Figure 1 As shown in 111 to 116), configuration information for CSI reporting is received from a base station (BS), wherein the CSI report to be generated by the UE includes a first CSI part and a second CSI part.

[0426] In step 2004, the UE determines a first CSI part and a second CSI part of the CSI report. The second CSI part includes a total of K across v layers. NZ non-zero coefficients, where υ≥1 is the rank value.

[0427] In step 2006, the UE determines a total of K NZ The priority value for each of the non-zero coefficients.

[0428] In step 2008, the UE divides the second CSI part into group 0, group 1 and group 2 so that based on the determined total K NZ The priority values ​​of the non-zero coefficients are determined, indicators of non-zero coefficients with higher priority values ​​are included in group 1, and indicators of non-zero coefficients with lower priority values ​​are included in group 2.

[0429] In step 2010, the UE transmits UL control information (UCI) of Group 0 or (Group 0, Group 1) or (Group 0, Group 1, Group 2) including the second CSI part to the BS through an uplink (UL) channel based on resource allocation for UCI transmission.

[0430] The indicators of the non-zero coefficients include an amplitude coefficient indicator and a phase coefficient indicator indicating the amplitude and phase of the non-zero coefficients, respectively.

[0431] In one embodiment, the number of indicators included in group 1 and group 2 are respectively and in is a ceiling function and is the floor function.

[0432] In one embodiment, And for each layer l=1,…,υ, is the number of non-zero coefficients of layer l, The non-zero coefficients correspond to a 2L×M coefficient matrix C consisting of 2L rows and M columns. l The non-zero coefficients of , and the 2L×M coefficient matrix C l The remaining 2LM- coefficients are zero, and the coefficient matrix C l The coefficient c l,i,m The priority value is based on the coefficient c l,i,m The associated layer index (l), row index (i) and column index (m).

[0433] In one embodiment, the coefficient c l,i,m The priority value is given by P(l,i,m)=2×L×υ×F 1 (m)+υ×F 2(i)+l gives, where the coefficient c with the highest priority value l,i,m has the lowest correlation value P(l,i,m), and F 1 and F 2 are fixed permutation functions of index m and i respectively.

[0434] In one embodiment, F 2 (i) = i.

[0435] In one embodiment, for each layer l=1, ..., v, determining includes indicating The bit sequence of 2LM bits of the index (i, m) of the non-zero coefficients, and based on the total K determined NZ The priority values ​​of non-zero coefficients are used to divide the total υ×2LM bits across υ layers into a first bit sequence and a second bit sequence, where the indicator of the first bit sequence with a higher priority is included in group 1, and the indicator of the second bit sequence with a lower priority is included in group 2.

[0436] In one embodiment, the first bit sequence and the second bit sequence respectively include Units and Units, including is the floor function.

[0437] In one embodiment, for each layer l=1, ..., v, the strongest coefficient included in group 0 is determined Index indicator.

[0438] In one embodiment, for each layer l=1, ..., v, it is determined that the indication included in group 1 is for all non-zero coefficients c l,i,m The common reference amplitude coefficient indicator, the non-zero coefficient index i is such that in is the floor function.

[0439] In one embodiment, the indicators included in group 0 are determined, and the indicators include A=[a 0 a 1 …a L-1 ], and for each layer l = 1, ..., υ, determine the indicator included in group 1, which indicates that B l =[b l,0 b l,1 …b l,M-1 ] is a set of M frequency domain (FD) basis vectors of columns, where A, B l and C l Instructions passed The total number of FD units (N3 ) is the precoding matrix of each FD unit in which

[0440] Fig.21 A flow chart of another method 2100 that may be performed by a base station (BS), such as BS 102, according to an embodiment of the present disclosure is shown. Fig.21 The embodiment of method 2100 shown in FIG. 2 is for illustration only. Fig.21 The scope of the present disclosure is not limited to any particular implementation.

[0441] like Fig.21 As shown, method 2100 starts at step 2102. In step 2102, a BS (e.g., Figure 1 101 to 103) shown in FIG. 101 generate CSI configuration information.

[0442] In step 2104, the BS transmits CSI configuration information for CSI reporting including a first CSI part and a second CSI part to a user equipment (UE).

[0443] In step 2106, the BS receives UL control information (UCI) of Group 0 or (Group 0, Group 1) or (Group 0, Group 1, Group 2) including the second CSI part from the UE through an uplink (UL) channel based on resource allocation for CSI transmission.

[0444] The second CSI part includes a total of K across v layers NZ non-zero coefficients, each non-zero coefficient has a priority value, where υ≥1 is the rank value.

[0445] The second CSI part is divided into group 0, group 1 and group 2, so that based on the total K NZ The priority value of each of the non-zero coefficients is determined by including indicators of non-zero coefficients with higher priority values ​​in group 1 and indicators of non-zero coefficients with lower priority values ​​in group 2.

[0446] The indicators of the non-zero coefficients include an amplitude coefficient indicator and a phase coefficient indicator indicating the amplitude and phase of the non-zero coefficients, respectively.

[0447] The number of indicators included in group 1 and group 2 are and in is a ceiling function and is the floor function.

[0448] In one embodiment, And for each layer l=1,…,υ, is the number of non-zero coefficients of layer l, The non-zero coefficients correspond to a 2L×M coefficient matrix C consisting of 2L rows and M columns. l The non-zero coefficients of , and the 2L×M coefficient matrix C l The remaining 2LM- coefficients are zero, and the coefficient matrix C l The coefficient c l,i,m The priority value is based on the coefficient c l,i,m The associated layer index (l), row index (i) and column index (m).

[0449] In one embodiment, the coefficient c l,i,m The priority value is given by P(l,i,m)=2×L×υ×F 1 (m)+υ×i+l gives, where the coefficient c with the highest priority value l,i,m has the lowest correlation value P(l,i,m), and F 1 is a fixed permutation function of index m.

[0450] In one embodiment, for each layer l=1, ..., v, determining includes indicating The bit sequence of 2LM bits of the index (i, m) of the non-zero coefficients, and based on the total K determined NZ The priority values ​​of the non-zero coefficients are divided into a total of υ×2LM bits across υ layers into a first bit sequence and a second bit sequence, wherein an indicator of the first bit sequence with a higher priority is included in group 1, and an indicator of the second bit sequence with a lower priority is included in group 2, wherein the first bit sequence and the second bit sequence respectively include Units and Units, including is the floor function.

[0451] In one embodiment, group 0 includes an indication including A=[a 0 a 1 …a L-1 ], and for each layer l=1,…,υ: Group 0 includes the indicator for the set of L spatial domain basis vectors of the columns of ], and for each layer l=1,…,υ: Group 0 includes the indicator for the strongest coefficient Index The indicator, group 1 includes the indicator for all non-zero coefficients c l,i,m The common reference amplitude coefficient indicator, the non-zero coefficient index i is such that in is a floor function, and group 1 includes the indication including B l =[b l,0 b l,1 …b l,M-1 ] is an indicator of a set of M frequency domain (FD) basis vectors of columns.

[0452] Although the present disclosure has been described using exemplary embodiments, various changes and modifications may be suggested to one skilled in the art. The present disclosure is intended to include such changes and modifications as fall within the scope of the appended claims.

[0453] Nothing in this application should be construed as implying that any particular element, step, or function is essential to be included in the claims. The scope of the patented subject matter is limited only by the claims. Furthermore, no claim is intended to invoke 35 USC § 112(f) unless the exact words "means for..." are followed by a participle.

Claims

1. A method performed by a user equipment UE in a wireless communication system, the method comprising: Receiving channel state information CSI report configuration information from a base station; identifying a first CSI part and a second CSI part, wherein the second CSI part includes CSI for each of N CSI reports, and the CSI for each of the N CSI reports is divided into a first group, a second group, and a third group, respectively; Based on resource allocation for transmitting uplink control information UCI, determining, according to CSI reporting priority, that at least one group of the second CSI part is included in the UCI; as well as transmitting the UCI of the at least one group including the first CSI part and the determined second CSI part to the base station, Among them, from the bitmap B for layer l l A first bitmap of the partition is included in the second group of the second CSI part, the first bitmap indicating that a first set of at least one amplitude coefficient indicator and at least one phase coefficient indicator is reported with a higher priority, Among them, from the bitmap B for layer l l a second divided bitmap is included in the third group of the second CSI part, the second bitmap indicating that a second set of at least one amplitude coefficient indicator and at least one phase coefficient indicator is reported with a lower priority, and The CSI reporting priority corresponds to the following table: [surface] ， Where priority 0 is the highest priority and priority 2N is the lowest priority.

2. The method according to claim 1, in, The first bitmap and the second bitmap are included in the second group and the third group, respectively, according to a priority value P, and Wherein, the priority value P corresponds to the following equation: [Equation] P(l,i,m)=2·L·v·F(m)+v·i+l, in: l＝1、……、v， v is the number of layers, i=0、……、2L-1, L is the number of beams, F(m) is the permutation function of the frequency domain basis vector index m, m=0, ..., M-1, and M is the number of frequency domain basis vectors.

3. The method of claim 2, wherein: The first bitmap corresponds to The highest priority, and the second bitmap corresponds to A lowest priority, where N0 is the total number of non-zero coefficients included in the second CSI part.

4. The method of claim 1, wherein: The first CSI part includes at least one CSI-reference signal (RS) indicator (CSI).

5. A method performed by a base station in a wireless communication system, the method comprising: Transmitting channel state information CSI report configuration information to user equipment UE; as well as receiving uplink control information UCI corresponding to at least one group of the CSI configuration information including a first CSI part and a second CSI part from the UE, wherein the at least one group of the second CSI part included in the UCI among the first group, the second group, and the third group of the second CSI part is based on resource allocation for transmitting the UCI according to CSI reporting priority, wherein the second CSI part includes CSI for each of N CSI reports, and the CSI for each of the N CSI reports is divided into the first group, the second group and the third group, respectively, Among them, from the bitmap B for layer l l A first bitmap of the partition is included in the second group of the second CSI part, the first bitmap indicating that a first set of at least one amplitude coefficient indicator and at least one phase coefficient indicator is reported with a higher priority, Among them, from the bitmap B for layer l l a second divided bitmap is included in the third group of the second CSI part, the second bitmap indicating that a second set of at least one amplitude coefficient indicator and at least one phase coefficient indicator is reported with a lower priority, and The CSI reporting priority corresponds to the following table: [surface] ， Where priority 0 is the highest priority and priority 2N is the lowest priority.

6. The method according to claim 5, in, The first bitmap and the second bitmap are included in the second group and the third group, respectively, according to a priority value P, and Wherein, the priority value P corresponds to the following equation: [Equation] P(l,i,m)=2·L·v·F(m)+v·i+l, in: l＝1、……、v， v is the number of layers, i=0、……、2L-1, L is the number of beams, F(m) is the permutation function of the frequency domain basis vector index m, m=0, ..., M-1, and M is the number of frequency domain basis vectors.

7. The method of claim 6, wherein: The first bitmap corresponds to The highest priority, and the second bitmap corresponds to A lowest priority, where N0 is the total number of non-zero coefficients included in the second CSI part.

8. The method of claim 5, wherein: The first CSI part includes at least one CSI-reference signal (RS) indicator (CSI).

9. A user equipment UE in a wireless communication system, the UE comprising: Transceiver; as well as a controller coupled to the transceiver and configured to: receiving channel state information (CSI) report configuration information from a base station via the transceiver, identifying a first CSI part and a second CSI part, wherein the second CSI part includes CSI for each of N CSI reports, and the CSI for each of the N CSI reports is divided into a first group, a second group, and a third group, respectively, Based on resource allocation for transmitting uplink control information (UCI), determining that at least one group of the second CSI part is included in the UCI according to a CSI reporting priority, and transmitting, via the transceiver, the UCI of the at least one group including the first CSI part and the determined second CSI part to the base station, Among them, from the bitmap B for layer l l A first bitmap of the partition is included in the second group of the second CSI part, the first bitmap indicating that a first set of at least one amplitude coefficient indicator and at least one phase coefficient indicator is reported with a higher priority, Among them, from the bitmap B for layer l l a second divided bitmap is included in the third group of the second CSI part, the second bitmap indicating that a second set of at least one amplitude coefficient indicator and at least one phase coefficient indicator is reported with a lower priority, and The CSI reporting priority corresponds to the following table: [surface] ， Where priority 0 is the highest priority and priority 2N is the lowest priority.

10. The UE according to claim 9, in, The first bitmap and the second bitmap are included in the second group and the third group, respectively, according to a priority value P, and Wherein, the priority value P corresponds to the following equation: [Equation] P(l,i,m)=2·L·v·F(m)+v·i+l, in: l＝1、……、v， v is the number of layers, i=0、……、2L-1, L is the number of beams, F(m) is the permutation function of the frequency domain basis vector index m, m=0, ..., M-1, and M is the number of frequency domain basis vectors.

11. The UE according to claim 10, wherein: The first bitmap corresponds to The highest priority, and the second bitmap corresponds to A lowest priority, where N0 is the total number of non-zero coefficients included in the second CSI part.

12. The UE according to claim 9, wherein: The first CSI part includes at least one CSI-reference signal (RS) indicator (CSI).

13. A base station in a wireless communication system, the base station comprising: Transceiver; as well as a controller coupled to the transceiver and configured to: Transmitting channel state information (CSI) report configuration information to a user equipment (UE) via the transceiver; and receiving, via the transceiver, uplink control information (UCI) corresponding to at least one group of the CSI configuration information including a first CSI part and a second CSI part from the UE, wherein the at least one group of the second CSI part included in the UCI among the first group, the second group, and the third group of the second CSI part is based on resource allocation for transmitting the UCI according to CSI reporting priority, wherein the second CSI part includes CSI for each of N CSI reports, and the CSI for each of the N CSI reports is divided into the first group, the second group and the third group, respectively, Among them, from the bitmap B for layer l l A first bitmap of the partition is included in the second group of the second CSI part, the first bitmap indicating that a first set of at least one amplitude coefficient indicator and at least one phase coefficient indicator is reported with a higher priority, Among them, from the bitmap B for layer l l a second divided bitmap is included in the third group of the second CSI part, the second bitmap indicating that a second set of at least one amplitude coefficient indicator and at least one phase coefficient indicator is reported with a lower priority, and The CSI reporting priority corresponds to the following table: [surface] ， Where priority 0 is the highest priority and priority 2N is the lowest priority.

14. The base station according to claim 13, in, The first bitmap and the second bitmap are included in the second group and the third group, respectively, according to a priority value P, and Wherein, the priority value P corresponds to the following equation: [Equation] P(l,i,m)=2·L·v·F(m)+v·i+l, in: l＝1、……、v， v is the number of layers, i=0、……、2L-1, L is the number of beams, F(m) is the permutation function of the frequency domain basis vector index m, m=0, ..., M-1, and M is the number of frequency domain basis vectors.

15. The base station according to claim 14, wherein: The first bitmap corresponds to The highest priority, and the second bitmap corresponds to A lowest priority, where N0 is the total number of non-zero coefficients included in the second CSI part.

16. The base station according to claim 13, wherein: The first CSI part includes at least one CSI-reference signal (RS) indicator (CSI).

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