Method and apparatus for uci construction and priority rules for csi based on cri

Abstract

This disclosure relates to 5G or 6G communication systems for supporting higher data transmission rates. This disclosure relates to a method performed by a user equipment (UE) in a communication system, comprising: receiving a configuration for measuring a first number of Channel State Information (CSI) Reference Signal (CSI-RS) resources; obtaining a second number of tuples of a reporting quantity based on a second number of CSI-RS resources in the first number of CSI-RS resources, wherein the second number of tuples includes a second number of CSI-RS Resource Indicators (CRIs) corresponding to the second number of CSI-RS resources; and transmitting a CSI report including the second number of tuples, wherein the CSI report includes a first part of CSI and a second part of CSI, and the second number of CRIs is included in the first part of CSI.

Description

Technical Field

[0001] This disclosure relates to the field of 5G and beyond 5G communication networks, and more specifically, to CSI reports with multiple network power-saving assumptions (adaptive modes) and / or methods and apparatus for constructing uplink control information (UCI) and priority rules for CRI-based CSI. Background Technology

[0002] 5G mobile communication technology defines a wide frequency band, enabling high transmission rates and new services. It can be implemented not only in "below 6 GHz" bands such as 3.5 GHz, but also in "above 6 GHz" bands, including 28 GHz and 39 GHz, known as mmWave. Furthermore, 6G mobile communication technology (referred to as "super 5G systems") is being considered in terahertz bands (e.g., the 95 GHz to 3 THz band) to achieve transmission rates fifty times faster than 5G and ultra-low latency one-tenth that of 5G.

[0003] At the outset of 5G mobile communication technology development, standardization was underway regarding beamforming and massive MIMO to support services and meet performance requirements associated with enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), and massive machine-type communication (mMTC). This standardization aimed to mitigate radio wave path loss in millimeter waves and increase radio wave transmission distance; support parameter sets for dynamic operation (e.g., operating multiple subcarrier spacings) to efficiently utilize millimeter wave resources and time slot formats; initial access technologies to support multi-beam transmission and broadband; the definition and operation of bandwidth portions (BWP); new channel decoding methods (such as low-density parity-check (LDPC) codes for large data transmissions and polar codes for highly reliable transmission of control information); L2 preprocessing; and network slicing for providing dedicated networks for specific services.

[0004] Currently, given the services supported by 5G mobile communication technology, discussions are underway regarding improvements and performance enhancements to the initial 5G mobile communication technology. Physical layer standardization for technologies such as Vehicle-to-Everything (V2X) is also in place, designed to assist autonomous vehicle driving decisions based on information about the vehicle's location and status transmitted by the vehicle, and to enhance user convenience. This includes NR-U (New Radio Unlicensed) and NR UE Energy Saving (NTN), which are UE-satellite direct communication technologies used to provide coverage and positioning in areas where communication with terrestrial networks is unavailable.

[0005] Furthermore, standardization is ongoing for technologies within the air interface architecture / protocol, such as the Industrial Internet of Things (IIoT) for supporting new services through interoperability and convergence with other industries, Integrated Access and Backhaul (IAB) for providing nodes for network service area extension by supporting wireless backhaul and access links in an integrated manner, mobility enhancements including conditional handover and Dual Active Protocol Stack (DAPS) handover, and two-step random access (two-step RACH for NR) for simplifying the random access process. Standardization is also underway for 5G baseline architectures (e.g., service-based architectures or service-based interfaces) for combining Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, as well as system architectures / services for Mobile Edge Computing (MEC) based on UE location reception services.

[0006] With the commercialization of 5G mobile communication systems, the already exponentially growing number of connected devices will be connected to the communication network, thus necessitating enhanced functionality and performance of 5G mobile communication systems as well as integrated operation of connected devices. To this end, new research related to extended reality (XR) has been arranged to effectively support augmented reality (AR), virtual reality (VR), mixed reality (MR), etc., by leveraging artificial intelligence (AI) and machine learning (ML), AI service support, metaspace service support, and drone communication to improve 5G performance and reduce complexity.

[0007] Furthermore, this development of 5G mobile communication systems will not only serve as the foundation for developing new waveforms for providing terahertz band coverage in 6G mobile communication technologies, such as multi-antenna transmission technologies like full-dimensional MIMO (FD-MIMO), array antennas, and massive MIMO; metamaterial-based lenses and antennas for improving terahertz band signal coverage; high-dimensional spatial multiplexing technologies using orbital angular momentum (OAM); and reconfigurable smart surfaces (RIS); it will also serve as the foundation for developing full-duplex technologies to improve the frequency efficiency of 6G mobile communication technologies and enhance system networks; AI-based communication technologies to achieve system optimization by leveraging satellites and AI from the design phase and internalizing end-to-end AI support functions; and next-generation distributed computing technologies to achieve services with complexity levels exceeding the operational capabilities of UEs by utilizing ultra-high-performance communication and computing resources.

[0008] The above information is presented as background information only to aid in understanding this disclosure. No determination or assertion is made regarding whether any of the above content can be used as prior art with respect to this disclosure. Summary of the Invention

[0009] [Technical Issues]

[0010] The primary purpose of this document is to disclose network configuration CSI report configuration and methods and apparatus for UEs to perform network configuration reports (CSI), wherein the configuration corresponds to multiple CSI-RS resource indices (CRI).

[0011] Another objective of this document is to disclose configuration information for a UE to receive CSI report configurations and methods and apparatus for a UE to report CSIs based on network configurations, wherein the configurations correspond to multiple CSI-RS resource indices (CRIs).

[0012] Another specific objective of this disclosure is to disclose a method and system for a network used by a UE to determine Part 1 and Part 2 of the CSI report corresponding to multiple tuples of CRI, RI, PMI, LI and CQI.

[0013] Another specific objective of this disclosure is to disclose a method and system for a network for a UE to determine the priority of CSI sub-reports of CSI reports corresponding to multiple tuples of CRI, RI, PMI, LI and CQI.

[0014] The technical objectives to be achieved by the various embodiments of this disclosure are not limited to those mentioned above. Other technical objectives not mentioned may be considered by those skilled in the art from the various embodiments of this disclosure described below.

[0015] [Technical Solution]

[0016] This disclosure has been made to address the problems and shortcomings mentioned above, and to provide at least the advantages described below.

[0017] According to one aspect of this disclosure, a method is provided performed by a base station in a wireless communication system; the method includes sending configuration information about CSI configuration to a terminal so that the UE reports a plurality of sets of reporting quantities “cri-RI-PMI-CQI-LI” or “cri-RI-PMI-CQI”.

[0018] According to an embodiment, a method performed by a user equipment (UE) in a communication system can be provided.

[0019] According to an embodiment, the method may include: receiving a configuration for measuring a first number of Channel State Information (CSI) Reference Signal (CSI-RS) resources; obtaining a second number of tuples of a report quantity based on a second number of CSI-RS resources in the first number of CSI-RS resources, wherein the second number of tuples includes a second number of CSI-RS Resource Indicators (CRIs) corresponding to the second number of CSI-RS resources; and sending a CSI report including the second number of tuples, wherein the CSI report includes a first part of CSI and a second part of CSI, and the second number of CRIs is included in the first part of CSI.

[0020] According to an embodiment, the first part of the CSI includes at least one of the following: a second number of rank indicators (RI) or a second number of channel quality indicators (CQI) for the first codeword.

[0021] According to an embodiment, the second part of the CSI includes at least one of the following: a second number of precoding matrix indicators (PMI), a second number of layer indicators (LI), or a second number of CQI for the second codeword.

[0022] According to an embodiment, the second number of tuples includes a second number of broadband CQIs, and the order of the second number of broadband CQIs in the CSI report corresponds to the order of the second number of CRIs in the first part of the CSI.

[0023] According to an embodiment, the order of the second number of CRIs in the first part of the CSI is associated with the descending priority of the reporting quantities corresponding to the second number of CRIs included in the second part of the CSI.

[0024] According to an embodiment, the priority is associated with the amount of reporting in which the second part of the CSI is omitted when constructing the uplink control information (UCI) that includes the CSI report.

[0025] According to an embodiment, the second quantity is equal to or less than the first quantity.

[0026] According to an embodiment, a user equipment (UE) in a communication system can be provided.

[0027] According to an embodiment, the UE may include a transceiver and a processor coupled to the transceiver, the processor being configured to receive a configuration for measuring a first number of Channel State Information (CSI) Reference Signal (CSI-RS) resources, obtain a second number of tuples of a report quantity based on a second number of CSI-RS resources in the first number of CSI-RS resources, wherein the second number of tuples includes a second number of CSI-RS Resource Indicators (CRIs) corresponding to the second number of CSI-RS resources, and transmit a CSI report including the second number of tuples, wherein the CSI report includes a first part of CSI and a second part of CSI, and the second number of CRIs is included in the first part of CSI.

[0028] According to an embodiment, the first part of the CSI includes at least one of the following: a second number of rank indicators (RI) or a second number of channel quality indicators (CQI) for the first codeword.

[0029] According to an embodiment, the second part of the CSI includes at least one of the following: a second number of precoding matrix indicators (PMI), a second number of layer indicators (LI), or a second number of CQI for the second codeword.

[0030] According to an embodiment, the second number of tuples includes a second number of broadband CQIs, and the order of the second number of broadband CQIs in the CSI report corresponds to the order of the second number of CRIs in the first part of the CSI.

[0031] According to an embodiment, the order of the second number of CRIs in the first part of the CSI is associated with the descending priority of the reporting quantities corresponding to the second number of CRIs included in the second part of the CSI.

[0032] According to an embodiment, the priority is associated with the amount of reporting in which the second part of the CSI is omitted when constructing the uplink control information (UCI) that includes the CSI report.

[0033] According to an embodiment, the second quantity is equal to or less than the first quantity.

[0034] According to an embodiment, a method performed by a base station in a communication system can be provided.

[0035] According to an embodiment, the method may include: transmitting a configuration for measuring a first number of Channel State Information (CSI) Reference Signal (CSI-RS) resources; receiving a CSI report; and obtaining a second number of tuples based on the CSI report that are associated with a second number of CSI-RS resources in the first number of CSI-RS resources, wherein the second number of tuples includes a second number of CSI-RS Resource Indicators (CRIs) corresponding to the second number of CSI-RS resources, and wherein the CSI report includes a first part of CSI and a second part of CSI, and the second number of CRIs is included in the first part of CSI.

[0036] According to an embodiment, the first part of the CSI includes at least one of the following: a second number of rank indicators (RI) or a second number of channel quality indicators (CQI) for the first codeword.

[0037] According to an embodiment, the second part of the CSI includes at least one of the following: a second number of precoding matrix indicators (PMI), a second number of layer indicators (LI), or a second number of CQI for the second codeword.

[0038] According to an embodiment, a base station in a communication system can be provided.

[0039] According to an embodiment, the base station may include a transceiver and a processor, the processor being coupled to the transceiver and configured to transmit a configuration for measuring a first number of Channel State Information (CSI) Reference Signal (CSI-RS) resources; receive a CSI report; and, based on the CSI report, obtain a second number of tuples of a report quantity associated with a second number of CSI-RS resources in the first number of CSI-RS resources, wherein the second number of tuples includes a second number of CSI-RS Resource Indicators (CRIs) corresponding to the second number of CSI-RS resources, and wherein the CSI report includes a first part of CSI and a second part of CSI, and the second number of CRIs is included in the first part of CSI.

[0040] The various embodiments described above are merely some preferred embodiments of this disclosure, and those skilled in the art can derive and understand various embodiments reflecting the technical features of this disclosure based on the following detailed description.

[0041] [Beneficial Effects]

[0042] This disclosure provides methods and apparatus for constructing uplink control information (UCI) and prioritization rules for CRI-based CSI.

[0043] The effects achievable through this disclosure are not limited to those mentioned in the various embodiments, and other effects not mentioned will be clearly understood by those skilled in the art from the following description. Attached Figure Description

[0044] Embodiments of this invention are illustrated in the accompanying drawings, in which the same reference numerals denote corresponding parts in the various drawings. The embodiments of this invention will be better understood through the following description with reference to the accompanying drawings, wherein:

[0045] Figure 1 An example wireless network according to an embodiment of the present disclosure is shown;

[0046] Figure 2A An example wireless transmission path according to an embodiment of the present disclosure is shown;

[0047] Figure 2B An example wireless reception path according to an embodiment of the present disclosure is shown;

[0048] Figure 3A An example UE according to an embodiment of the present disclosure is shown;

[0049] Figure 3B An example gNB according to an embodiment of this disclosure is shown;

[0050] Figure 4 An exemplary cross-polarized MIMO antenna system according to an embodiment of the present disclosure is shown;

[0051] Figure 5 An exemplary layout for Channel State Information Reference Signal (CSI-RS) resource mapping in an Orthogonal Frequency Division Multiple Access (OFDM) time-frequency grid is shown according to an embodiment of the present disclosure;

[0052] Figure 6 Examples of CSI reporting configurations and CSI measurement configurations supported in a 5G NR system according to embodiments of the present disclosure are shown;

[0053] Figure 7 An exemplary process for obtaining CSI based on non-PMI according to embodiments of this disclosure is shown;

[0054] Figure 8 The application of the parameter non-PMI-PortIndication according to embodiments of the present disclosure is illustrated;

[0055] Figure 9 The CRI of the CSI-RS resource associated with a specific analog beam is shown according to an embodiment of the present disclosure;

[0056] Figure 10The contents of Part 1 and Part 2 of the CSI are shown according to embodiments of this disclosure;

[0057] Figure 11 The content priority of Part 2 of the CSI is shown in an embodiment of this disclosure when the UE multiplexes multiple CSI reports;

[0058] Figure 12 An exemplary case is shown in which a UE reports multiple CSI sub-reports according to an embodiment of the present disclosure, wherein the CSI sub-reports correspond to tuples of CSI components;

[0059] Figure 13 An exemplary case is shown in which a UE reports multiple tuples of CSI components in a single set of CSI in Part 1 and Part 2 of the CSI report according to an embodiment of the present disclosure, wherein the gNB configures the number of tuples of the CSI components to be reported;

[0060] Figure 14 An exemplary case is illustrated where a UE reports multiple tuples of CSI components in a single set of CSIs in Part 1 and Part 2 of a CSI report, according to embodiments of the present disclosure, wherein the UE determines the number of tuples of the CSI components to be reported; and

[0061] Figure 15 The following illustrates the content priority of the second part of the CSI of multiple sub-reports of the CSI report when the UE multiplexes multiple CSI reports, according to an embodiment of the present disclosure. Detailed Implementation

[0062] A description of example embodiments is provided on the following pages.

[0063] The text and accompanying drawings are provided by way of example only to aid the reader in understanding the invention. They are not intended and should not be construed as limiting the scope of the invention in any way. Although certain embodiments and examples have been provided, those skilled in the art will understand, based on the disclosure herein, that changes can be made to the illustrated embodiments and examples without departing from the scope of the invention.

[0064] The following flowchart illustrates an example method that can be implemented according to the principles of this disclosure, and various modifications can be made to the method shown in the flowcharts herein. For example, although shown as a series of steps, the individual steps in each diagram may overlap, occur in parallel, occur in different orders, or occur multiple times. In another example, steps may be omitted or replaced with other steps.

[0065] Wireless communication is already one of the most successful innovations in modern history. Recently, the number of subscribers to wireless communication services surpassed five billion and continues to grow rapidly. The demand for wireless data traffic is increasing rapidly due to the growing popularity of smartphones and other mobile data devices (such as tablets, notepad computers, netbooks, e-book readers, and machine-type devices) among consumers and businesses. To meet this high growth in mobile data traffic and support new applications and deployments, improvements in radio interface efficiency and coverage are crucial.

[0066] To meet the increased demand for wireless data traffic since the deployment of 4G communication systems, and to enable various vertical applications, 5G communication systems have been developed and are currently being deployed.

[0067] 5G communication systems are considered to be implemented using higher frequency (mmWave) bands, such as 28 GHz or 60 GHz bands, or typically above 6 GHz bands, to achieve higher data rates, or in lower frequency bands, such as below 6 GHz, to achieve robust coverage and mobility support. Aspects of this disclosure can be applied to the deployment of 5G communication systems, 6G, or even higher versions that can utilize THz bands. Beamforming, massive MIMO, full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive MIMO technologies are discussed in 5G communication systems to reduce radio wave propagation loss and increase transmission distance.

[0068] In addition, in 5G communication systems, development is underway to improve system networks based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communication, coordinated multipoint (CoMP), and receiver interference cancellation.

[0069] Figure 1 An example wireless network 100 according to an embodiment of the present disclosure is shown. Figure 1 The embodiment of the wireless network 100 shown is for illustrative purposes only. Other embodiments of the wireless network 100 may be used without departing from the scope of this disclosure.

[0070] Wireless network 100 includes gNodeB (gNB) 101, gNB 102, and gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one Internet Protocol (IP) network 130, such as the Internet, a proprietary IP network, or other data network.

[0071] Depending on the network type, the term "gNB" can refer to any component (or set of components) configured to provide wireless access to a network to remote terminals, such as a base transceiver station, radio base station, transmitting point (TP), transmitting-receiving point (TRP), terrestrial gateway, airborne gNB, satellite system, mobile base station, macrocell, microcell, WiFi access point (AP), etc. Furthermore, depending on the network type, other well-known terms may be used instead of "user equipment" or "UE," such as "mobile station," "subscriber station," "remote terminal," "wireless terminal," or "user device." For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to devices that wirelessly access a gNB. A UE can be a mobile device or a fixed device. For example, a UE can be a mobile phone, smartphone, monitoring equipment, alarm equipment, fleet management equipment, asset tracking equipment, automobile, desktop computer, entertainment equipment, infotainment equipment, vending machine, electricity meter, water meter, gas meter, security equipment, sensor equipment, electrical appliances, etc.

[0072] gNB 102 provides wireless broadband access to network 130 to a first plurality of user equipments (UEs) within its coverage area 120. The first plurality of UEs includes 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, wireless laptop computer, wireless PDA, etc. gNB 103 provides wireless broadband access to network 130 to a second plurality of UEs within its coverage area 125. The second plurality of UEs includes UE 115 and UE 116. In some embodiments, one or more of gNBs 101-103 may communicate with each other and with UEs 111-116 using 5G, LTE, LTE-A, WiMAX, or other advanced wireless communication technologies.

[0073] The dashed lines indicate the approximate extent of coverage areas 120 and 125, and are shown as approximately circular for illustrative and explanatory purposes only. It should be clearly understood that coverage areas associated with the gNB (such as coverage areas 120 and 125) may have other shapes, including irregular shapes, depending on the configuration of the gNB and variations in the radio environment associated with natural and man-made obstacles.

[0074] As described in more detail below, one or more of BS 101, BS 102, and BS 103 include a 2D antenna array as described in embodiments of this disclosure. In some embodiments, one or more of BS 101, BS 102, and BS 103 support codebook design and architecture for systems having 2D antenna arrays.

[0075] although Figure 1 An example of a wireless network 100 is shown, but more details can be found on other wireless networks. Figure 1 Various modifications can be made. For example, wireless network 100 can include any number of gNBs and any number of UEs arranged in any suitable configuration. Furthermore, gNB 101 can communicate directly with any number of UEs and provide these UEs with wireless broadband access to network 130. Similarly, each gNB 102-103 can communicate directly with network 130 and provide UEs with direct wireless broadband access to network 130. Additionally, gNBs 101, 102, and / or 103 can provide access to other or additional external networks, such as external telephone networks or other types of data networks.

[0076] Figure 2A and 2B Example wireless transmit and receive paths according to embodiments of the present disclosure are illustrated. In the following description, transmit path 200 may be described as being implemented in a gNB (such as gNB 102), while receive path 250 may be described as being implemented in a UE (such as UE 116). However, it will be understood that receive path 250 may be implemented in the gNB, and transmit path 200 may be implemented in the UE. In some embodiments, receive path 250 is configured to support codebook design and architecture for a system with a 2D antenna array as described in embodiments of the present disclosure.

[0077] The transmit path 200 includes a channel coding and modulation block 205, a serial-to-parallel (S-to-P) block 210, an N-size inverse fast Fourier transform (IFFT) block 215, a parallel-to-serial (P-to-S) block 220, a cyclic prefix addition block 225, and an up-converter (UC) 230. The receive path 250 includes a down-converter (DC) 255, a cyclic prefix removal block 260, a serial-to-parallel (S-to-P) block 265, an N-size fast Fourier transform (FFT) block 270, a parallel-to-serial (P-to-S) block 275, and a channel decoding and demodulation block 280.

[0078] In transmit path 200, channel coding and modulation block 205 receives a set of information bits, applies coding (such as low-density parity-check (LDPC) coding), and modulates the input bits (such as using quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) to generate a frequency-domain modulated symbol sequence. Serial-to-parallel block 210 converts (e.g., demultiplexes) the serial modulated symbols into parallel data to generate N parallel symbol streams, where N is the IFFT / FFT size used in gNB 102 and UE 116. IFFT block 215 of size N performs an IFFT operation on the N parallel symbol streams to generate a time-domain output signal. Parallel-to-serial block 220 converts (e.g., multiplexes) the parallel time-domain output symbols from IFFT block 215 of size N to generate a serial time-domain signal. Cyclic prefix addition block 225 inserts a cyclic prefix into the time-domain signal. Upconverter 230 modulates (such as upconverts) the output of cyclic prefix block 225 to an RF frequency for transmission via a wireless channel. The signal can also be filtered at baseband before conversion to the RF frequency.

[0079] The transmitted RF signal from gNB 102 reaches UE 116 after passing through the wireless channel, and performs the opposite operation to that at gNB 102. Downconverter 255 downconverts the received signal to the baseband frequency, and cyclic prefix removal block 260 removes the cyclic prefix to generate a serial time-domain baseband signal. Serial-to-parallel block 265 converts the time-domain baseband signal into a parallel time-domain signal. FFT block 270 of size N performs an FFT algorithm to generate N parallel frequency-domain signals. Parallel-to-serial block 275 converts the parallel frequency-domain signals into a sequence of modulated data symbols. Channel decoding and demodulation block 280 demodulates and decodes the modulated symbols to recover the original input data stream.

[0080] Each of gNBs 101-103 can implement a transmission path 200 similar to that sent to UEs 111-116 in the downlink, and a reception path 250 similar to that received from UEs 111-116 in the uplink. Similarly, each of UEs 111-116 can implement a transmission path 200 for sending to gNBs 101-103 in the uplink, and a reception path 250 for receiving from gNBs 101-103 in the downlink.

[0081] Figure 2A and Figure 2B Each component in the system can be implemented using only hardware or a combination of hardware and software / firmware. As a specific example, Figure 2A and 2BAt least some components can be implemented in software, while others can be implemented using configurable hardware or a combination of software and configurable hardware. For example, FFT block 270 and IFFT block 215 can be implemented as configurable software algorithms, where the value of size N can be modified depending on the implementation.

[0082] Furthermore, although described as using FFT and IFFT, this is merely illustrative and should not be construed as limiting the scope of this disclosure. Other types of transforms, such as the Discrete Fourier Transform (DFT) and Inverse Discrete Fourier Transform (IDFT) functions, can be used. It will be understood that for the DFT and IDFT functions, the value of the variable N can be any integer (such as 1, 2, 3, 4, etc.), while for the FFT and IFFT functions, the value of the variable N can be any integer that is a power of 2 (such as 1, 2, 4, 8, 16, etc.).

[0083] although Figure 2A and 2B An example of a wireless transmit and receive path is shown, but it is possible to modify it further. Figure 2A and 2B Make various changes. For example, you can combine, further subdivide, or omit. Figure 2A and 2B It includes various components and allows for the addition of additional components as needed. Furthermore, Figure 2A and 2B This is intended to illustrate examples of the types of transmit and receive paths that can be used in a wireless network. Any other suitable architecture can be used to support wireless communication in a wireless network.

[0084] Figure 3A An example UE 116 according to an embodiment of the present disclosure is shown. Figure 3A The embodiment of UE 116 shown is for illustrative purposes only, and Figure 1 UEs 111-115 can have the same or similar configurations. However, UEs have a wide variety of configurations, and Figure 3A This disclosure is not intended to limit the scope of any particular implementation of the UE.

[0085] UE 116 includes an antenna 305, a radio frequency (RF) transceiver 310, a transmit (TX) processing circuitry 315, a microphone 320, and a receive (RX) processing circuitry 325. UE 116 also includes a speaker 330, a main processor 340, an input / output (I / O) interface (IF) 345, a keypad 350, a display 355, and memory 360. Memory 360 includes a basic operating system (OS) program 361 and one or more applications 362.

[0086] RF transceiver 310 receives incoming RF signals transmitted by a gNB of network 100 from antenna 305. RF transceiver 310 down-converts the incoming RF signals to generate 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 to main processor 340 for further processing (e.g., for web browsing data).

[0087] The TX processing circuit 315 receives analog or digital voice data from the microphone 320, or other outgoing baseband data (such as web data, email, or interactive video game data) from the main 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 into an RF signal transmitted via the antenna 305.

[0088] The main processor 340 may include one or more processors or other processing devices and executes a basic OS program 361 stored in memory 360 to control the overall operation of the UE 116. For example, the main 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 main processor 340 includes at least one microprocessor or microcontroller.

[0089] The main processor 340 is also capable of executing other processes and programs residing in memory 360, such as operations for channel quality measurement and reporting for a system with a 2D antenna array as described in embodiments of this disclosure. The main processor 340 can move data into or out of memory 360 as needed for the execution process. In some embodiments, the main processor 340 is configured to execute application 362 based on OS program 361 or in response to signals received from a gNB or operator. The main processor 340 is also coupled to I / O interface 345, which provides the UE 116 with the ability to connect to other devices such as laptop computers and handheld computers. I / O interface 345 is the communication path between these accessories and the main controller 340.

[0090] The main processor 340 is also coupled to a keypad 350 and a display unit 355. The operator of the UE 116 can use the keypad 350 to input data into the UE 116. The display 355 may be a liquid crystal display or another display capable of rendering text and / or at least limited graphics from a website. Memory 360 is coupled to the main processor 340. A portion of the memory 360 may include random access memory (RAM), and another portion of the memory 360 may include flash memory or other read-only memory (ROM).

[0091] although Figure 3A An example of UE 116 is shown, but it is possible to modify it. Figure 3A Make various changes. For example, you can combine, further subdivide, or omit. Figure 3A The main processor 340 can be divided into various components, and additional components can be added as needed. As a specific example, the main processor 340 can be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Furthermore, although... Figure 3A The UE116 is shown configured as a mobile phone or smartphone, but the UE can be configured to operate as other types of mobile or fixed devices.

[0092] Figure 3B An example gNB 102 according to an embodiment of the present disclosure is shown. Figure 3B The embodiment of gNB 102 shown is for illustrative purposes only, and Figure 1 Other gNBs can have the same or similar configurations. However, gNBs have a wide variety of configurations, and Figure 3B This disclosure is not intended to limit the scope to any particular implementation of the gNB. Note that gNB 101 and gNB 103 may include the same or similar structures as gNB 102.

[0093] like Figure 3B As shown, gNB 102 includes multiple antennas 370a-370n, multiple RF transceivers 372a-372n, transmit (TX) processing circuitry 374, and receive (RX) processing circuitry 376. In some embodiments, one or more of the multiple antennas 370a-370n include a 2D antenna array. gNB 102 also includes a controller / processor 378, a memory 380, and a backhaul or network interface 382.

[0094] RF transceivers 372a-372n receive incoming RF signals, such as signals transmitted by the UE or other gNBs, from antennas 370a-370n. RF transceivers 372a-372n down-convert the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are sent to RX processing circuitry 376, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signals. RX processing circuitry 376 sends the processed baseband signal to controller / processor 378 for further processing.

[0095] The TX processing circuit 374 receives analog or digital data (such as voice data, web data, email, or interactive video game data) from the controller / processor 378. The TX processing circuit 374 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 372a-372n receive the outgoing processed baseband or IF signal from the TX processing circuit 374 and up-convert the baseband or IF signal into an RF signal transmitted via antennas 370a-370n.

[0096] The controller / processor 378 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 378 may control the RF transceivers 372a-372n, the RX processing circuitry 376, and the TX processing circuitry 374 to receive forward channel signals and transmit reverse channel signals, based on well-known principles. The controller / processor 378 may also support additional functions, such as more advanced wireless communication capabilities. For example, the controller / processor 378 may perform blind interference sensing (BIS) processes (such as those performed by a BIS algorithm) and decode the received signal after subtracting interference signals. The controller / processor 378 may support any of a variety of other functions in the gNB 102. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0097] The controller / processor 378 is also capable of executing programs and other processes residing in the memory 380, such as a basic operating system. The controller / processor 378 is also capable of supporting channel quality measurement and reporting for systems with 2D antenna arrays as described in the embodiments of this disclosure. In some embodiments, the controller / processor 378 supports inter-entity communication, such as WebRTC. The controller / processor 378 can move data into or out of the memory 380 as needed for the execution process.

[0098] The controller / processor 378 is also coupled to a backhaul or network interface 382. The backhaul or network interface 382 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or over a network. Interface 382 can support communication via any suitable wired or wireless connection. For example, when the gNB 102 is implemented as part of a cellular communication system (such as a cellular communication system supporting 5G, LTE, or LTE-A), interface 382 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, interface 382 can allow the gNB 102 to communicate via a wired or wireless local area network or via a wired or wireless connection to a larger network (such as the Internet). Interface 382 includes any suitable architecture supporting communication via wired or wireless connections, such as Ethernet or RF transceivers.

[0099] Memory 380 is coupled to controller / processor 378. A portion of memory 380 may include RAM, and another portion of memory 380 may include flash memory or other ROM. In some embodiments, multiple instructions, such as a BIS algorithm, are stored in memory. The multiple instructions are configured to cause controller / processor 378 to perform the BIS process and decode the received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0100] As described in more detail below, the transmit and receive paths of the gNB 102 (implemented using RF transceivers 372a-372n, TX processing circuitry 374, and / or RX processing circuitry 376) support aggregated communication with FDD and TDD cells.

[0101] although Figure 3B An example of gNB 102 is shown, but it is possible to compare it with other models. Figure 3B Various changes can be made. For example, gNB102 can include any number of Figure 3B Each component shown. As a particular example, an access point may include multiple interfaces 382, ​​and a controller / processor 378 may support routing functionality to route data between different network addresses. As another particular example, although shown as a single instance including TX processing circuitry 374 and a single instance including RX processing circuitry 376, gNB 102 may include multiple instances of each (such as one per RF transceiver).

[0102] Among them, MIMO systems equipped with multiple antennas for BS and / or UE are widely used in wireless systems due to their advantages in spatial multiplexing, diversity gain and array gain.

[0103] Figure 4An exemplary cross-polarized MIMO antenna system according to an embodiment of the present disclosure is shown. Figure 4 An example of a MIMO antenna configuration with 24 antenna elements is shown. Figure 4 In this configuration, four cross-polarized (401) antenna elements form a 4 × 1 subarray (402). These 12 subarrays form a 2V3H MIMO antenna configuration, comprising two subarrays in the vertical dimension (404) and three subarrays in the horizontal dimension (403). Although Figure 4 An example of a MIMO antenna configuration is shown, but this disclosure can be applied to a variety of such configurations.

[0104] In MIMO systems, Channel State Information (CSI) is required at the base station (BS) to enable the UE to receive signals from the BS with the maximum possible receive power and the minimum possible interference. For Time-Domain Duplex (TDD) and Frequency-Domain Duplex (FDD) systems, CSI acquisition at the BS can be achieved through measurement of the UL reference signal at the BS or through measurement and feedback of the DL reference signal at the UE. In 5G FDD systems, the Channel State Information Reference Signal (CSI-RS) is the primary reference signal used by the UE to measure and report CSI.

[0105] In some embodiments, the UE can receive configuration signaling from the BS for CSI-RS that can be used for channel measurements. An example of such configuration is... Figure 5 As shown in the image.

[0106] Figure 5 An exemplary layout for Channel State Information Reference Signal (CSI-RS) resource mapping in an Orthogonal Frequency Division Multiple Access (OFDM) time-frequency grid is shown according to an embodiment of the present disclosure.

[0107] exist Figure 5 In this configuration, 12 antenna ports (CSI-RS ports) are mapped to CSI-RS arrays with three code domain multiplexing (CDM) groups, where each CDM group is mapped to four resource elements (REs) in the OFDM time-frequency grid. Antenna ports mapped to the same CDM group can be orthogonalized in the code domain by employing orthogonal overlay codes. This is achieved by mapping the CSI-RS ports to one of the polarizations of the subarray. Figure 5 The CSI-RS configuration in the middle can be with Figure 4 This relates to MIMO antenna configuration. In the 5G NR standard, three time-domain CSI-RS resource configurations are possible: periodic, semi-permanent, and aperiodic. Figure 5 The document provides an illustrative example of a periodic configuration with a period of 4 time slots.

[0108] In addition, the UE can be configured to use CSI reporting configuration to measure CSI feedback. CSI reporting configuration can be periodic, semi-persistent, or aperiodic.

[0109] Figure 6 Examples of CSI reporting configurations and CSI measurement configurations supported in a 5G NR system according to embodiments of this disclosure are shown. Figure 6 The CSI reporting configuration and CSI measurement configuration supported in the 5G NR system are described. The CSI reporting configuration (602) can be linked to the CSI resource configuration (603). The CSI resource configuration (603) can contain one or more CSI resource sets (604) for channel measurement (CMR) or inference measurement (IMR).

[0110] In the case of periodic (P) and semi-persistent (SP) CSI reporting settings, the CSI resource configuration is associated with a single CSI resource set. In the case of aperiodic (AP) CSI reporting, the UE can be configured with multiple CSI reporting trigger states (600). A CSI reporting trigger state is associated with one or more CSI-associated reporting configuration information (601). Downlink control information (DCI) may include a CSI request indicating one of the configured trigger states. In addition, the DCI with the CSI request may also include a resource set selection field (605) to select one of the resource sets (604).

[0111] In addition, CSI reports can be configured with one of the following CSI reporting quantities. These can include the CSI Resource Indicator (CRI), Rank Indicator (RI), Precoding Matrix Indicator (PMI), Channel Quality Indicator (CQI), Layer Indicator (LI), SINR, and RSRP. In 5G NR, various CSI reporting quantities are used. Specifically, the RRC parameter `reportQuantity` is set to "None", "cri-RI-PMI-CQI", "cri-RI-i1", "cri-RI-i1-CQI", "cri-RI-CQI", "cri-RSRP", "cri-SINR", "ssb-Index-RSRP", "ssb-Index-SINR", "cri-RI-LI-PMI-CQI", "cri-RSRP-Index", "ssb-Index-RSRP-Index", "cri-SINR-Index", or "ssb-Index-SINR-Index".

[0112] CSI reports can be used for transmission beam management (BM), specifically in higher frequency bands, such as frequency range 2 (FR2). In this case, the gNB can configure the UE to report one of the following quantities, including “cri-RSRP”, “cri-SINR”, “ssb-Index-RSRP”, “ssb-Index-SINR”, “cri-RSRP-Index”, “ssb-Index-RSRP-Index”, “cri-SINR-Index”, or “ssb-Index-SINR-Index”.

[0113] For yet another purpose, CSI reports can be used for downlink transmission CSI including “cri-RI-PMI-CQI”, “cri-RI-i1”, “cri-RI-i1-CQI”, and “cri-RI-CQI”.

[0114] When the configured reporting volume is "cri-RI-PMI-CQI" or "cri-RI-PMI-CQI-LI", the aforementioned CSI report can include PMI. On the other hand, when the configured reporting volume is "cri-RI-CQI", the CSI report may not include PMI, which is often referred to as a non-PMI-based CSI report.

[0115] Figure 7 An exemplary process for non-PMI-based CSI acquisition according to embodiments of this disclosure is illustrated. In this process, the gNB (701) estimates the channel via uplink measurements (e.g., via SRS measurements (702)). The gNB can then compute a precoder for one or more precoding assumptions, where the precoding assumptions can be associated with different ranks, different TRPs, different analog beams, etc. The gNB then precodes the CSI-RS resource using the derived precoder. Individual CSI-RS resources can correspond to transmissions via individual analog beams or from individual TRPs. Furthermore, CSI-RS ports in non-PMI-based CSI correspond to the MIMO transport layer. The gNB can precode the CSI-RS resource with different ranks and precoding assumptions. For example, the gNB can precode an 8-port CSI RS resource, for example, with multiple rank assumptions for ranks ∈ {1,2,…,8}. The port-to-MIMO layer mapping can be predefined or provided to the UE via higher-layer parameters. After receiving the CSI-RS resource (703), the UE (700) can report a CSI (704) with CSI reporting amount cri-RI-CQI, where cri indicates the CSI-RS resource, RI indicates the preferred rank of the UE, and CQI indicates the corresponding channel quality information.

[0116] In 5G NR, the precoded CSI-RS port-to-layer mapping can be explicitly configured via the higher-layer parameter non-PMI-PortIndication, or a predefined mapping can be exported if the parameter is not configured.

[0117] In traditional 5G NR, if the UE is configured with CSI-ReportConfig, where the higher-layer parameter reportQuantity is set to 'cri-RI-CQI', and if the UE is configured with the higher-layer parameter non-PMI-PortIndication included in CSI-ReportConfig, then r ports are indicated in a layer-ordered manner with rank r. Each CSI-RS resource in the CSI resource setting is linked to CSI-ReportConfig based on the order of the NZP-CSI-RS-ResourceId associated in the link CSI resource setting, given by the higher-layer parameter resourcesForChannelMeasurement for channel measurement. The configured higher-layer parameter non-PMI-PortIndication contains a port index sequence. ,in It is a CSI-RS port index associated with rank ν, and ,in This refers to the number of ports in the CSI-RS resource. The UE will only report the RI corresponding to the configuration field PortIndexFor8Ranks.

[0118] If the UE is configured with CSI-ReportConfig, where the higher-layer parameter reportQuantity is set to "cri-RI-CQI", and if the UE is not configured with the higher-layer parameter non-PMI-PortIndication, then for each CSI-RS resource in the CSI resource settings linked to CSI-ReportConfig, the UE assumes that the CSI-RS port index is associated with a rank, where the rank is the number of ports in the CSI-RS resource.

[0119] If the UE is configured with CSI-ReportConfig, where the higher-layer parameter reportQuantity is set to "cri-RI-CQI", then when calculating the rank of the CQI, the UE will use the port indicated by that rank for the selected CSI-RS resource. The precoder used for the indicated port should be assumed to be... Scaling of the identity matrix.

[0120] Figure 8 The application of the parameter non-PMI-PortIndication according to an embodiment of this disclosure is illustrated. Figure 8 An exemplary case of CSI port-to-MIMO layer mapping is shown when the higher-level parameter non-PMI-PortIndication is not configured (800) and configured (801). Consider a CSI-RS with 8 ports and depict the layer mapping up to rank=4. When the higher-level parameter non-PMI-PortIndication is not set, the MIMO layers of each rank are mapped in ascending order starting from the first port. Thus, as shown in (800), the four layers with rank=4 are mapped from the first port to the fourth port. However, when the higher-level parameter non-PMI-PortIndication is configured, for example, non-PMI-PortIndication={0,1,2,3,4,5,4,5,6,7}, the port-to-layer mapping is depicted in (801). Thus, the four MIMO layers with rank=4 are mapped to ports from 4 to 7 (803).

[0121] The following provides a brief description of CSI based on hybrid beamforming (HBF), which may also be referred to as CRI-based CSI. In CRI-based CSI, the UE can be configured with more than one CSI-RS resource for CSI measurements. In particular, CSI-RS resources can be associated with different analog beamformings.

[0122] Figure 9 The CRI of an indication of a CSI-RS resource associated with a specific analog beam is shown according to an embodiment of the present disclosure. Figure 9 Four CSI-RS resources, CSI-RS#1 (900), CSI-RS#2 (901), CSI-RS#3 (902), and CSI-RS#4 (903), are shown associated with four different analog beams. When the UE is configured with a CSI reporting quantity set to "cri-RI-PMI-CQI" or "cri-RI-PMI-CQI-LI", the UE can indicate the preferred analog beam by indicating the associated CSI-RS resource via the CSI-RS Resource Indicator (CRI) (905). Therefore, the UE determines other components of the CSI report, such as {RI, PMI, CQI, LI}, based on the reported CRI.

[0123] In traditional CRI-based CSI reporting, the UE reports a single CRI along with a set of RI, PMI, CQI, and LI determined based on the reported CRI. In multi-user MIMO (MU-MIMO), the network can only schedule UEs to receive PDSCH simultaneously if users select the same analog beam (i.e., CRI). This scheduling limitation can lead to performance degradation. One solution to mitigate this limitation is to allow the UE to have multiple preferred analog beams (CRIs) and corresponding sets of {RI, PMI, CQI, LI}. This provides the network with greater flexibility in MU scheduling.

[0124] Figure 10 The contents of Part 1 and Part 2 of the CSI are shown according to embodiments of this disclosure.

[0125] In 5G NR, when a UE reports the first part of the CSI corresponding to the reporting quantity "cri-RI-PMI-CQI" or "cri-RI-PMI-LI-CQI", the UE reports it in two parts. The first part, namely the first part of the CSI (1000), consists of CRI, RI, and CQI used for the first codeword (CW). The second part, namely the second part of the CSI (1001), consists of PMI, LI, and CQI (the second CW). The two parts of the CSI report are encoded separately, and the first part (1000) has a higher priority than the second part of the CSI (1001). That is, if there are insufficient uplink resources (PUCCH, PUSCH) for carrying the CSI report, the UE will partially or completely discard the second part of the CSI (1001) before discarding the first part of the CSI (1000). This allows the gNB to retrieve the more important parts of the CSI, even if the UE cannot adapt the reported CSI to the scheduled uplink resources.

[0126] Figure 11 The content priority of Part 2 CSI is shown in an embodiment of this disclosure when the UE multiplexes multiple CSI reports.

[0127] Furthermore, in 5G NR, when the UE will N rep When a CSI report is multiplexed into uplink resources (PUSCH or PUCCH), the UE multiplexes the second part of the CSI report according to a predefined priority. As an example, N repThe second part of the CSI report, the broadband CSI (1100), receives the highest priority. Then, the UE reuses subband CSIs for even and odd subbands based on the priority of the CSI reports. For example, the CSIs corresponding to the even subbands (1101) and odd subbands (1102) with the highest priority CSI report receive the highest priority after the second part of the broadband CSI. Therefore, the UE sorts the CSI reports in descending order of priority, n=1,2,… N rep If the nth CSI report has a higher priority than the (n+1)th CSI report, then the UE sorts the second part of the CSIs for even and odd subbands in descending order of priority, where the CSI reports corresponding to even subbands have a higher priority than those for odd subbands. For example, the second part of the wideband CSI (1100) (corresponding to priority 0), the subband CSI REP#1 for even subbands (corresponding to priority 1), the subband CSI REP#1 for odd subbands (corresponding to priority 2), the subband CSI REP#2 for even subbands (corresponding to priority 3), the subband CSI REP#2 for odd subbands (corresponding to priority 4), ..., the subband CSI REP#Nrep for even subbands (corresponding to priority 2Nrep-1), and the subband CSI REP#Nrep for odd subbands (corresponding to priority 2Nrep) are sorted according to priority, for example, in descending order of priority. Then, the UE discards the second part of the CSIs according to priority.

[0128] The following describes various methods to enable a UE to report multiple CRIs and corresponding sets of {RI, PMI, CQI, LI}. Specifically, various methods for constructing uplink control information (UCI) are disclosed when the UE reports a CSI report corresponding to one or more CRIs.

[0129] In this disclosure, multiple simulated beams for CSI based on Hybrid Beamforming (HBF) are considered. The term "beam" is used interchangeably and may have the same meaning as CSI-RS resource, CRI, Quasi-Co-location (QCL) type D source RS to Transmission Configuration Indicator (TCI) status, or transmit filter. For example, reporting to N beams can be equivalent to reporting N CRIs.

[0130] 1. Part 1 and Part 2 of CSI

[0131] Several embodiments of this disclosure are set forth below, wherein the UE reports multiple sets of CRIs and corresponding CSI components.

[0132] 2. Number of RRC configurations for CRI.

[0133] Considering multiple analog beams, if the network configures the UE for measurement... It may be beneficial for the UE to report CSIs to all or only a subset of the CSI-RS resources. If the UE reports CSIs for a subset of the CSI-RS resources, the UE will use... Each CRI indicates the selected CSI-RS resource.

[0134] When a UE reports N tuples of CSI components (i.e., {CRI, RI, PMI, LI, CQI}) for a CSI report, it needs to determine how to construct the UCI according to Part 1 and Part 2 of the CSI. An important principle is to fix the size of Part 1 of the CSI to manage decoding complexity. Furthermore, the gNB will be able to determine the size of Part 2 of the CSI based on the information included in Part 1. Additionally, UCI construction will be based on priority to facilitate the discarding of Part 2 of the CSI. In the following, this disclosure proposes treating each tuple of the CSI report as a CSI sub-report and constructing Part 1 and Part 2 of the CSI for each sub-report.

[0135] In one aspect of this disclosure, method 1.a.1, if the network configures the UE with N>1 CRIs, the UE reports an N-tuple of CSI components {CRI, RI, PMI, CQI, LI}, where the content of the tuple is determined according to the configured CSI reporting amount, and each set of CSI components is considered a sub-report.

[0136] Figure 12 An exemplary case is shown in which a UE reports multiple CSI sub-reports according to an embodiment of the present disclosure, wherein the CSI sub-reports correspond to tuples of CSI components. Figure 12 The diagram illustrates a method in which the UE arranges a CSI report corresponding to N tuples of CRI, RI, PMI, CQI, and LI into N sub-reports (1200, 1201, 1203). Each sub-report consists of a corresponding Part 1 and Part 2 CSI.

[0137] In one aspect of this disclosure, method 1.a.1, the network configures the UE with a CSI-RS resource set for measurement. One CSI-RS resource. The network can configure the UE to report N∈{1,2,…,…} via higher-layer parameters (e.g., numberOfCRI-report). One CRI.

[0138] - The UE reports N sub-reports according to the configured CSI reporting quantity in the high-level parameter "reportQuantity". Each sub-report contains a set of CSI components (i.e., CRI, RI, PMI, CQI, LI).

[0139] - For Type I CSI feedback in one or more subreports, Part 1 of the subreport contains the corresponding RI (if reported), CRI (if reported), CQI (if reported) for the first codeword, and is zero-padded to a fixed payload size (if required). Part 2 of the subreport contains the corresponding CQI (if reported), LI (if reported), and PMI (if reported) for the second codeword when the RI is greater than 4.

[0140] - For Enhanced Type II CSI feedback, Part 1 of the subreport contains the RI (if reported), CQI, and the total number of non-zero amplitude coefficients reported across strata. The fields in Part 1—RI (if reported), CQI, and the total number of non-zero amplitude coefficients reported across strata—are coded separately. Part 2 of the subreport contains the Enhanced Type II PMI. Parts 1 and 2 are coded separately.

[0141] - For a corresponding CSI report containing one or more CSI subreports (each subreport corresponding to a reported CRI), the second part of the CSI is omitted at the subreport level within the same priority, where the subreports have an index corresponding to the ordinal position of the reported CRI. The CRI of the first report in the ordinal position of the CRI reports in the first part of the CSI corresponds to the highest priority.

[0142] Another consideration is to construct the UCI using a single set of Part 1 and Part 2 CSIs. In this case, both Part 1 and Part 2 of the CSI report consist of certain components of N tuples of CSI components. One advantage of this UCI construction is that it simplifies the UE's effort in constructing the CSI report. It also handles the N tuples of the report in a similar way in the Part 2 CSI dropout.

[0143] In another aspect of this disclosure, in method 1.a.2, if the network configures an N>1 CRI for the UE, the UE reports an N-tuple of CSI components (e.g., CRI, RI, PMI, CQI, LI') according to the configured CSI reporting amount, wherein the first and second parts of the CSI report respectively contain N sets of CSI components.

[0144] Figure 13 An exemplary case is shown in which the UE reports multiple tuples of CSI components in a single set of CSI components in Part 1 and Part 2 of the CSI report, according to an embodiment of the present disclosure, wherein the gNB configures the number of tuples of the CSI components to be reported. Figure 13The method is shown in which the UE arranges the CSI report corresponding to the N tuples of CRI, RI, PMI, CQI, LI in the CSI of Part 1 (1300) and Part 2 (1301).

[0145] In one aspect of this disclosure, method 1.a.1, the network configures the UE with a CSI-RS resource set for measurement. One CSI-RS resource. The network can configure the UE to report N∈{1,2,…,…} via higher-layer parameters (e.g., numberOfCRI-report). } CRI.

[0146] - The UE reports N tuples of CSI components (i.e., CRI, RI, PMI, CQI, LI) according to the CSI reporting quantity configured in the high-level parameter "reportQuantity".

[0147] - For a Type I CSI feedback with one or more CRIs, Part 1 contains N RIs, N CRIs, and N CQIs for the first codeword, and is zero-padded to a fixed payload size (if needed). Part 2 contains up to N CQIs (if reported), LIs (if reported), and PMIs for the second codeword when the RIs are greater than 4.

[0148] - For Enhanced Type II CSI feedback, Part 1 contains N RIs (if reported), N CQIs, and N indicators for the total number of non-zero amplitude coefficients reported across strata. The fields in Part 1—up to N RIs (if reported), up to N CQIs, and up to N indicators for the total number of non-zero amplitude coefficients reported across strata—are encoded separately. Part 2 of the sub-report contains N PMIs for Enhanced Type II. Parts 1 and 2 are encoded separately.

[0149] b. The UE dynamically selects the number of CRIs.

[0150] This section considers the case where the UE dynamically determines the number of tuples in the CRI or CSI report. This is a particularly useful case because the channel quality from multiple simulated beamforming CSI-RS resources dynamically varies according to the UE's relative conditions (e.g., location, congestion conditions, etc.). The UE may also resort to calculating the CSI only for a few optimal beams to save its power. Therefore, it can indicate the number of dynamically determined CRIs. When the UE dynamically determines the number of CRIs, it should indicate the selected number of CRIs in Part 1 of the CSI report so that the gNB determines the size of Part 2 of the CSI report. A method for solving this problem is presented below.

[0151] In another consideration, the network configures the UE with CSI-RS resource sets for measurement. One CSI-RS resource. The UE can determine the number of CRIs to report, i.e. .

[0152] -If UE is determined Then the UE indicates the determined and report Each CRI, as well as RI, PMI, CRI, CQI and / or LI. tuples.

[0153] In another aspect of this disclosure, in method 1.b.1, if the UE dynamically determines that N ≥ 1 CRIs are to be reported, the UE reports tuples of CSI components (e.g., CRI, RI, PMI, CQI, LI') according to the configured CSI reporting amount, wherein the first and second parts of the CSI report respectively contain N sets of CSI components.

[0154] Figure 14 An exemplary case is shown in which the UE reports multiple tuples of CSI corresponding to CSI components in a single set of CSI in Part 1 and Part 2 of the CSI report, according to an embodiment of the present disclosure, wherein the UE determines the number of tuples of the CSI components to be reported. Figure 14 The method in which the UE arranges CSI reports corresponding to N tuples of CRI, RI, PMI, CQI, and LI in Part 1 (1400) and Part 2 (1401) of CSI is illustrated. The UE also reports an indicator for the number N of CRIs reported.

[0155] In one aspect of this disclosure, method 1.b.1, the network configures the UE with a CSI-RS resource set for measurement. One CSI-RS resource. UE determination report. CRI

[0156] - The UE also reports an indicator for the number N of reported CRIs.

[0157] - The UE reports N tuples of CSI components (i.e., CRI, RI, PMI, CQI, LI) according to the CSI reporting quantity configured in the high-level parameter "reportQuantity".

[0158] - For a Type I CSI feedback with one or more CRIs, Part 1 contains an indicator of the number of CRIs used for reporting, i.e., N, N RIs, N CRIs, and N CQIs for the first codeword, and is zero-padded to a fixed payload size (if required). Part 2 contains up to N CQIs (if reported), LIs (if reported), and PMIs for the second codeword when the RI is greater than 4.

[0159] - For Enhanced Type II CSI feedback, for the number of reported CRIs, i.e., N, Part 1 contains N RIs (if reported), N CQIs, and N indicators for the total number of non-zero amplitude coefficients across strata. The fields in Part 1—up to N RIs (if reported), up to N CQIs, and up to N indicators for the total number of non-zero amplitude coefficients across strata—are coded separately. Part 2 of the sub-report contains N PMIs for Enhanced Type II. Parts 1 and 2 are coded separately.

[0160] In one aspect of this disclosure, method 1.b.2, the network configures the UE with a CSI-RS resource set for measurement. One CSI-RS resource. UE determination report. CRI

[0161] - The UE also reports an indicator for the number N of reported CRIs.

[0162] - The UE reports N tuples of CSI components (i.e., CRI, RI, PMI, CQI, LI) according to the CSI reporting quantity configured in the high-level parameter "reportQuantity".

[0163] - For a Type I CSI feedback with one or more CRIs, Part 1 contains N RIs, N CRIs, and N CQIs for the first codeword, and is zero-padded to a fixed payload size (if needed). Part 2 contains up to N CQIs (if reported), LIs (if reported), and PMIs for the second codeword when the RIs are greater than 4.

[0164] - For enhanced Type II CSI feedback, Part 1 includes N RI (if reported), N The total number of non-zero amplitude coefficients in the CQI and cross-layer reports N The fields in Part 1—up to N RIs (if reported), up to N CQIs, and up to N indicators for the total number of non-zero amplitude coefficients for cross-tier reports—are coded separately. Part 2 of the sub-report contains N PMIs for Enhanced Type II. Parts 1 and 2 are coded separately.

[0165] - The UE reports an indicator for the number of reported CRIs N in Part 1 of the first sub-report, CSI.

[0166] c. The UE dynamically selects from a pre-configured number of CRIs.

[0167] This section considers the scenario where the UE dynamically determines the number of tuples for CRI or CSI reports from a pre-configured set. While partially retaining the benefits of the UE dynamically determining the number of CRIs, narrowing the selection set is also useful. This narrowing of the selection set helps the UE in terms of CSI computational complexity and helps the gNB in ​​determining the uplink resource size for carrying the CSI report. Therefore, it can indicate the number of CRIs dynamically determined from the pre-configured set. When the UE dynamically determines the number of CRIs from the pre-configured selection set, it should indicate the selected number of CRIs in Part 1 of the CSI report so that the gNB can determine the size of Part 2 of the CSI report. A method for addressing this issue is presented below.

[0168] In one aspect of this disclosure, method 1.c.1, the network configures the UE with a CSI-RS resource set for measurement. Candidate values ​​for CSI-RS resources and the number of CRIs the UE needs to report, for example... And N∈{2,3}.

[0169] Then, the UE determines the N value from the pre-configured values ​​and instructs it to the network.

[0170] -UE reports N tuples of CRI and RI, PMI, CRI, CQI and / or LI.

[0171] -Then, the UE applies method 1.b.1 to map the N tuples of the reported RI, PMI, CRI, CQI and / or LI.

[0172] In one aspect of this disclosure, method 1.c.2, the network configures the UE with a CSI-RS resource set for measurement. One CSI-RS resource. The UE determines the report N∈{1,2,…, } CRI

[0173] - The UE also reports an indicator for the number N of reported CRIs.

[0174] - The UE reports N tuples of CSI components (i.e., CRI, RI, PMI, CQI, LI) according to the CSI reporting quantity configured in the high-level parameter "reportQuantity".

[0175] - For a Type I CSI feedback with one or more CRIs, Part 1 contains N RIs, N CRIs, and N CQIs for the first codeword, and is zero-padded to a fixed payload size (if needed). Part 2 contains up to N CQIs (if reported), LIs (if reported), and PMIs for the second codeword when the RIs are greater than 4.

[0176] - For Enhanced Type II CSI feedback, Part 1 contains N RIs (if reported), N CQIs, and N indicators for the total number of non-zero amplitude coefficients reported across strata. The fields in Part 1—up to N RIs (if reported), up to N CQIs, and up to N indicators for the total number of non-zero amplitude coefficients reported across strata—are encoded separately. Part 2 of the sub-report contains N PMIs for Enhanced Type II. Parts 1 and 2 are encoded separately.

[0177] - The UE reports an indicator for the number of reported CRIs N in Part 1 of the first sub-report, CSI.

[0178] 2. Priority and Part 2 CSI Drop

[0179] Based on the above description, when a UE report has N CRIs for CSI reporting, the CSI report can be reported as N sub-reports.

[0180] Figure 15 The following illustrates the content priority of the second part of the CSI of multiple sub-reports of the CSI report when the UE multiplexes multiple CSI reports according to an embodiment of the present disclosure. For example, for CSI report "n", sub-report 1, sub-report 2, ..., sub-report n (1501, 1502, 1503) are ordered in descending order of priority.

[0181] Therefore, it is necessary to prioritize these sub-reports. One consideration is to rank the CSI sub-reports based on channel quality (i.e., CQI).

[0182] a. Broadband CQI Report

[0183] The UE can be configured to indicate Channel Quality Indicators (CQIs) at a wideband frequency granularity. The UE can then determine the priority of N sub-reports by considering the associated wideband CQIs. This simplifies the UE implementation in terms of priority determination. Furthermore, the UE can implicitly indicate priority by arranging N CRIs in Part 1 of the CSI, where the reported CRIs are ordered in descending order of priority; that is, the first reported CRI corresponds to the highest priority. The gNB can also determine the priority based on the CRI order or the value of the wideband CQI, and thus determine the content of Part 2 of the CSI. Various methods for addressing the above problems are presented below.

[0184] In one aspect of this disclosure, method 2.a.1,

[0185] - When the UE is configured with CSI reporting settings at the wideband frequency granularity, i.e., the higher-layer parameter cqi-FormatIndicator is set to "widebandCQI", and,

[0186] When a UE reports N sub-reports, each containing a set of CSI components (i.e., CRI, RI, PMI, CQI, LI), the UE determines the priority of the sub-reports based on the corresponding broadband CQI. The CSI sub-report corresponding to the highest broadband CQI index corresponds to the highest priority.

[0187] - The UE sorts the reported CRIs according to their respective priorities, where the first CRI in the ordinal position of the reported CRIs corresponds to the highest priority, and the last CRI in the ordinal position of the reported CRIs corresponds to the lowest priority.

[0188] - In this case, the UE reports v>4 layers, and the broadband CQI above refers to the broadband CQI corresponding to the first CW.

[0189] In one aspect of this disclosure, method 2.a.2,

[0190] - When the UE is configured with CSI reporting settings at the broadband frequency granularity, i.e., the higher-layer parameter cqi-FormatIndicator is set to "broadband cqi", and,

[0191] When a UE reports N sub-reports, each containing a set of CSI components (i.e., CRI, RI, PMI, CQI, LI), the UE determines the priority of the sub-reports based on the corresponding broadband CQI. The CSI sub-report corresponding to the highest broadband CQI index corresponds to the highest priority.

[0192] - The UE sorts the reported CRIs according to their respective priorities, where the first CRI in the ordinal position of the reported CRIs corresponds to the highest priority, and the last CRI in the ordinal position of the reported CRIs corresponds to the lowest priority.

[0193] - In this case, the UE reports v>4 layers, and the broadband CQI above refers to the broadband CQI corresponding to the second CW.

[0194] In one aspect of this disclosure, method 2.1.2,

[0195] - When the UE is configured with CSI reporting settings at the broadband frequency granularity, i.e., the higher-layer parameter cqi-FormatIndicator is set to "broadband cqi", and,

[0196] When a UE reports N sub-reports, each containing a set of CSI components (i.e., CRI, RI, PMI, CQI, LI), the UE determines the priority of the sub-reports based on the corresponding broadband CQI. The CSI sub-report corresponding to the highest broadband CQI index corresponds to the highest priority.

[0197] - The UE sorts the reported CRIs according to their respective priorities, where the first CRI in the ordinal position of the reported CRIs corresponds to the highest priority, and the last CRI in the ordinal position of the reported CRIs corresponds to the lowest priority.

[0198] - In this case, the UE reports v>4 layers, and the broadband CQI above refers to the broadband CQI corresponding to the total (sum) across the first and second CWs.

[0199] b. Sub-band CQI report

[0200] The UE can be configured to indicate Channel Quality Indicators (CQIs) at the sub-band frequency granularity. The UE can then determine the priority of N sub-reports by considering the associated sub-band CQIs. When considering sub-band CQIs, the UE can compare all or a subset of the CQIs of the configured sub-bands. Furthermore, the UE can implicitly indicate priority by arranging N CRIs in Part 1 of the CSI, where the reported CRIs are ordered in descending order of priority; that is, the first reported CRI corresponds to the highest priority. The gNB can also determine the priority based on the CRI order or the value of the sub-band CQI, and thus determine the content of Part 2 of the CSI. Various methods for addressing the above problems are presented below.

[0201] In one aspect of this disclosure, method 2.b.1,

[0202] -When the UE is configured to report subband CQI, and,

[0203] When a UE reports N sub-reports, each containing a set of CSI components (i.e., CRI, RI, PMI, CQI, LI), the UE determines the priority of the sub-reports based on the corresponding summation or averaging of the subband CQI. The CSI sub-report corresponding to the highest value after summing or averaging the subband CQI indices of the reported subbands corresponds to the highest priority.

[0204] - The UE sorts the reported CRIs according to their respective priorities, where the first CRI in the ordinal position of the reported CRIs corresponds to the highest priority, and the last CRI in the ordinal position of the reported CRIs corresponds to the lowest priority.

[0205] - In this case, the UE reports v>4 layers, and the subband CQI index above refers to the subband CQI corresponding to the first CW.

[0206] In one aspect of this disclosure, method 2.b.2,

[0207] -When the UE is configured to report subband CQI, and,

[0208] When a UE reports N sub-reports, each containing a set of CSI components (i.e., CRI, RI, PMI, CQI, LI), the UE determines the priority of the sub-reports based on the corresponding summation or averaging of the subband CQI. The CSI sub-report corresponding to the highest value after summing or averaging the subband CQI indices of the reported subbands corresponds to the highest priority.

[0209] - The UE sorts the reported CRIs according to their respective priorities, where the first CRI in the ordinal position of the reported CRIs corresponds to the highest priority, and the last CRI in the ordinal position of the reported CRIs corresponds to the lowest priority.

[0210] - In this case, the UE reports v>4 layers, and the subband CQI index above refers to the subband CQI corresponding to the second CW.

[0211] In one aspect of this disclosure, method 2.b.3,

[0212] -When the UE is configured to report subband CQI, and,

[0213] When a UE reports N sub-reports, each containing a set of CSI components (i.e., CRI, RI, PMI, CQI, LI), the UE determines the priority of the sub-reports based on the corresponding summation or averaging of the subband CQI. The CSI sub-report corresponding to the highest value after summing or averaging the subband CQI indices of the reported subbands corresponds to the highest priority.

[0214] - The UE sorts the reported CRIs according to their respective priorities, where the first CRI in the ordinal position of the reported CRIs corresponds to the highest priority, and the last CRI in the ordinal position of the reported CRIs corresponds to the lowest priority.

[0215] - In this case, the UE reports v>4 layers, and the subband CQI index above refers to the subband CQI corresponding to the total (sum) across the first and second CWs.

[0216] In one aspect of this disclosure, method 2.b.4,

[0217] - When the UE is configured to report differential subband CQI, i.e., when the higher-layer parameter cqi-BitsPerSubband is configured.

[0218] When a UE reports N sub-reports, each containing a set of CSI components (i.e., CRI, RI, PMI, CQI, LI), the UE determines the priority of the sub-reports based on the corresponding broadband CQI. The CSI sub-report corresponding to the highest broadband CQI index corresponds to the highest priority. The CSI sub-report corresponding to the lowest broadband CQI index corresponds to the lowest priority.

[0219] - The UE sorts the reported CRIs according to their respective priorities, where the first CRI in the ordinal position of the reported CRIs corresponds to the highest priority, and the last CRI in the ordinal position of the reported CRIs corresponds to the lowest priority.

[0220] - In this case, the UE reports v>4 layers, and the broadband CQI above refers to the broadband CQI corresponding to the first CW.

[0221] The UE can be configured to indicate Channel Quality Indicators (CQIs) at the subband frequency granularity. The UE can also be configured to report subband CQIs differentially, anchored to the reported wideband CQI. This particular configuration results in a large gap between the wideband and subband CQIs when the channel is not strictly frequency selective or when the subband size is not very large. Then, even with subband CQI reporting configured, the UE can determine the priority of N sub-reports by considering the associated wideband CQI. Furthermore, the UE can implicitly indicate priority by arranging N CRIs in Part 1 of the CSI, where the reported CRIs are ordered in descending order of priority, i.e., the first reported CRI corresponds to the highest priority. The gNB can also determine the priority based on the CRI order or the value of the wideband CQI, and thus determine the content of Part 2 of the CSI. Various methods for addressing the above problems are presented below.

[0222] In one aspect of this disclosure, method 2.b.5,

[0223] - When the UE is configured to report differential subband CQI, i.e., when the higher-layer parameter cqi-BitsPerSubband is configured.

[0224] When a UE reports N sub-reports, each containing a set of CSI components (i.e., CRI, RI, PMI, CQI, LI), the UE determines the priority of the sub-reports based on the corresponding broadband CQI. The CSI sub-report corresponding to the highest broadband CQI index corresponds to the highest priority. The CSI sub-report corresponding to the lowest broadband CQI index corresponds to the lowest priority.

[0225] - The UE sorts the reported CRIs according to their respective priorities, where the first CRI in the ordinal position of the reported CRIs corresponds to the highest priority, and the last CRI in the ordinal position of the reported CRIs corresponds to the lowest priority.

[0226] - In this case, the UE reports v>4 layers, and the broadband CQI above refers to the broadband CQI corresponding to the second CW.

[0227] In one aspect of this disclosure, method 2.b.6,

[0228] - When the UE is configured to report differential subband CQI, i.e., when the higher-layer parameter cqi-BitsPerSubband is configured.

[0229] When a UE reports N sub-reports, each containing a set of CSI components (i.e., CRI, RI, PMI, CQI, LI), the UE determines the priority of the sub-reports based on the corresponding broadband CQI. The CSI sub-report corresponding to the highest broadband CQI index corresponds to the highest priority. The CSI sub-report corresponding to the lowest broadband CQI index corresponds to the lowest priority.

[0230] - The UE sorts the reported CRIs according to their respective priorities, where the first CRI in the ordinal position of the reported CRIs corresponds to the highest priority, and the last CRI in the ordinal position of the reported CRIs corresponds to the lowest priority.

[0231] - In this case, the UE reports v>4 layers, and the broadband CQI above refers to the broadband CQI corresponding to the total number across the first and second CWs.

[0232] abbreviations

[0233] 2D

[0234] ACK confirmation

[0235] AoA Arrival Angle

[0236] AoD leaves the corner

[0237] ARQ Automatic Retransmission Request

[0238] BW bandwidth

[0239] CDM code division multiplexing

[0240] CP loop prefix

[0241] C-RNTI community RNTI

[0242] CRS Common Reference Signal

[0243] CRI CSI-RS Resource Indicator

[0244] CSI Channel Status Information

[0245] CSI-RS Channel State Information Reference Signal

[0246] CQI Channel Quality Indicator

[0247] DCI downlink control information

[0248] dB decibels

[0249] DL downlink

[0250] DL-SCH (DL Shared Channel)

[0251] DMRS demodulation reference signal

[0252] eMBB Enhanced Mobile Broadband

[0253] eNB (eNodeB) (base station)

[0254] FDD Frequency Division Duplex

[0255] FDM (Frequency Division Multiplexing)

[0256] Fast Fourier Transform (FFT)

[0257] HARQ Hybrid ARQ

[0258] IFFT (Inverse Fast Fourier Transform)

[0259] LAA Licensed Assisted Access

[0260] LBT listens before speaking

[0261] LTE Long Term Evolution

[0262] MIMO (Multiple Input Multiple Output)

[0263] mMTC (Mass Machine Type Communication)

[0264] MTC Machine Type Communication

[0265] MU-MIMO (Multi-User MIMO)

[0266] NACK (Negative Confirmation)

[0267] NW Network

[0268] OFDM (Orthogonal Frequency Division Multiplexing)

[0269] PBCH Physical Broadcast Channel

[0270] PDCCH Physical Downlink Control Channel

[0271] PDSCH Physical Downlink Shared Channel

[0272] PHY physical layer

[0273] PRB Physical Resource Block

[0274] PMI Precoding Matrix Indicator

[0275] PSS master synchronization signal

[0276] PUCCH (Physical Uplink Control Channel)

[0277] PUSCH Physical Uplink Shared Channel

[0278] QoS (Quality of Service)

[0279] RAN Radio Access Network

[0280] RAT radio access technology

[0281] RB resource blocks

[0282] RE Resource Elements

[0283] RI rank indicator

[0284] RRC Radio Resource Control

[0285] RS reference signal

[0286] RSRP reference signal received power

[0287] SDM Spatial Division Multiplexing

[0288] SINR signal-to-interference and noise ratio

[0289] SPS semi-persistent scheduling

[0290] SRS detection RS

[0291] SF subframe

[0292] SSS auxiliary synchronization signal

[0293] SU-MIMO Single-User MIMO

[0294] TDD Time Division Duplex

[0295] TDM Time Division Multiplexing

[0296] TB transport block

[0297] TP transmission point

[0298] TRP Sending and Receiving Points

[0299] TTI Transmission Time Interval

[0300] UCI uplink control information

[0301] UE User Equipment

[0302] UL uplink

[0303] UL-SCH UL Shared Channel

[0304] URLLC Ultra-Reliable Low-Latency Communication

[0305] Although this disclosure has been described with reference to various embodiments, various changes and modifications may be suggested to those skilled in the art. This disclosure is intended to cover such changes and modifications that fall within the scope of the appended claims.

Claims

1. A method executed by a user equipment (UE) in a communication system, the method comprising: Receive configuration of CSI-RS resources for measuring a first quantity of Channel State Information (CSI) reference signals; Based on a second number of CSI-RS resources from the first number of CSI-RS resources, a second number of tuples representing the reporting quantity is obtained, wherein the second number of tuples includes the second number of CSI-RS resource indicators (CRIs) corresponding to the second number of CSI-RS resources; and Send a CSI report comprising the second number of the tuples, wherein the CSI report comprises a first part CSI and a second part CSI, and the second number of the CRIs are included in the first part CSI.

2. The method according to claim 1, wherein, The first part of the CSI includes at least one of the following: the second number of rank indicators RI and the second number of channel quality indicators CQI for the first codeword, and The second part of CSI includes at least one of the following: the second number of precoding matrix indicators PMI for the second codeword, the second number of layer indicators LI, and the second number of CQI.

3. The method according to claim 1, wherein, The second number of tuples includes the second number of broadband CQIs, and The order of the second number of broadband CQIs in the CSI report corresponds to the order of the second number of CRIs in the first part of the CSI.

4. The method according to claim 1, wherein, The order of the second number of CRIs in the first part of the CSI is associated with a descending order of priority of the number of reports corresponding to the second number of CRIs included in the second part of the CSI.

5. The method according to claim 4, wherein, The priority is associated with the amount of the second part of the CSI being omitted when constructing the uplink control information UCI that includes the CSI report.

6. The method according to claim 1, wherein, The second quantity is equal to or less than the first quantity.

7. A user equipment (UE) in a communication system, the UE comprising: transceiver; as well as A processor, coupled to the transceiver and configured to: Receive configuration of CSI-RS resources for measuring a first quantity of Channel State Information (CSI) reference signals; Based on the second number of CSI-RS resources from the first number of CSI-RS resources, a second number of tuples of the reporting quantity is obtained, wherein the second number of tuples includes the second number of CSI-RS resource indicators (CRIs) corresponding to the second number of CSI-RS resources; and Send a CSI report comprising the second number of the tuples, wherein the CSI report comprises a first part CSI and a second part CSI, and the second number of the CRIs are included in the first part CSI.

8. The UE according to claim 7, wherein, The first part of the CSI includes at least one of the following: the second number of rank indicators RI and the second number of channel quality indicators CQI for the first codeword, and The second part of CSI includes at least one of the following: the second number of precoding matrix indicators PMI for the second codeword, the second number of layer indicators LI, and the second number of CQI.

9. The UE according to claim 7, wherein, The second number of tuples includes the second number of broadband CQIs, and The order of the second number of broadband CQIs in the CSI report corresponds to the order of the second number of CRIs in the first part of the CSI.

10. The UE according to claim 7, wherein, The order of the second number of CRIs in the first part of the CSI is associated with a descending order of priority of the number of reports corresponding to the second number of CRIs included in the second part of the CSI.

11. The UE according to claim 10, wherein, The priority is associated with the amount of the second part of the CSI being omitted when constructing the uplink control information UCI that includes the CSI report.

12. The UE according to claim 7, wherein, The second quantity is equal to or less than the first quantity.

13. A method performed by a base station in a communication system, the method comprising: Configure the CSI-RS resource to send a first quantity of Channel State Information (CSI) reference signals. Receive CSI reports; as well as Based on the CSI report, obtain a second tuple of the report quantity associated with a second number of CSI-RS resources out of the first number of CSI-RS resources. Wherein, the second number of tuples includes the second number of CSI-RS resource indicators (CRIs) corresponding to the second number of CSI-RS resources, and The CSI report includes a first part CSI and a second part CSI, and the second number of CRIs are included in the first part CSI.

14. The method according to claim 13, wherein, The first part of the CSI includes at least one of the following: the second number of rank indicators RI and the second number of channel quality indicators CQI for the first codeword, and The second part of CSI includes at least one of the following: the second number of precoding matrix indicators PMI for the second codeword, the second number of layer indicators LI, and the second number of CQI.

15. A base station in a communication system, the base station comprising: transceiver; as well as A processor, coupled to the transceiver and configured to: Configure the CSI-RS resource to send a first quantity of Channel State Information (CSI) reference signals. Receive CSI reports; and Based on the CSI reports, obtain a second set of tuples representing the report quantity associated with the second set of CSI-RS resources out of the first set of CSI-RS resources. Wherein, the second number of tuples includes the second number of CSI-RS resource indicators (CRIs) corresponding to the second number of CSI-RS resources, and The CSI report includes a first part CSI and a second part CSI, and the second number of CRIs are included in the first part CSI.

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