Calibration method and apparatus for coherent joint transmission in wireless communication system

Abstract

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. An apparatus and method for calibration for coherent joint transmission. A method performed by a user equipment (UE) includes receiving information on a channel state information (CSI) report, and determining a reference antenna group based on the information. The information indicates a number of antenna groups, and a reporting quantity. The reporting quantity corresponds to a delay offset (DO) or a frequency offset (FO). The method further includes determining, based on the information and the reference antenna group, calibration related information (CLI) for each of the number of antenna groups other than the reference antenna group; and transmitting a CSI report including a CLI indicator. The CLI indicator indicates the reference antenna group and the CLI.

Description

Technical Field

[0001] This disclosure generally relates to wireless communication systems, and more specifically, to apparatus and methods for calibration of coherent joint transmission. 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 "sub-6GHz" bands such as 3.5GHz, but also in "above 6GHz" bands, including 28GHz and 39GHz, known as mmWave. Furthermore, 6G mobile communication technology (referred to as "super 5G systems") is being considered in terahertz (THz) bands (e.g., the 95GHz to 3THz 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 for the following technologies 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): beamforming and massive MIMO for mitigating radio wave path loss and increasing radio wave transmission distance in millimeter waves; dynamic operation supporting parameter sets (e.g., operating multiple subcarrier spacings) and time slot formats for efficient utilization of millimeter wave resources; initial access technologies supporting multi-beam transmission and broadband; definition and operation of BWP (bandwidth portion); new channel coding methods (such as LDPC (low-density parity-check) 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 that 5G mobile communication technology needs to support, discussions are underway regarding improvements and performance enhancements to the initial 5G mobile communication technology, and physical layer standardization already exists for technologies such as: V2X (Vehicle-to-Everything) for assisting autonomous vehicles in determining driving based on information about the location and status of vehicles transmitted by vehicles and for enhancing user convenience; NR-U (New Radio Unlicensed) designed to make system operation in unlicensed bands comply with various regulatory requirements; NR UE power saving; non-terrestrial networks (NTNs) for UE-satellite direct communication to provide coverage in areas where communication with terrestrial networks is unavailable; and positioning.

[0005] Furthermore, standardization is underway in the wireless interface architecture / protocol domain for technologies such as: Industrial Internet of Things (IIoT) to support new services through interoperability and convergence with other industries; IAB (Integrated Access and Backhaul) for nodes to provide network service area extension by supporting wireless backhaul and access links in an integrated manner; mobility enhancements including conditional handover and DAPS (Dual Active Stack) handover; and two-step random access (2-step RACH for NR) to simplify the random access process. In terms of system architecture / services, 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; and mobile edge computing (MEC) for UE location-based reception services.

[0006] With the commercialization of 5G mobile communication systems, the number of connected devices will increase exponentially, necessitating enhanced functionality and performance of 5G mobile communication systems, as well as integrated operation of connected devices. To this end, new research is planned related to: Extended Reality (XR) for effectively supporting AR (Augmented Reality), VR (Virtual Reality), MR (Mixed Reality), etc.; improving 5G performance and reducing 5G complexity by leveraging Artificial Intelligence (AI) and Machine Learning (ML); AI service support; Metaverse service support; and drone communication.

[0007] Furthermore, this development of 5G mobile communication systems will serve as a foundation for: not only developing new waveforms for providing terahertz band coverage for 6G mobile communication technologies, multi-antenna transmission technologies (such as full-dimensional MIMO (FD-MIMO), array antennas, and massive MIMO), metamaterial-based lenses and antennas for improving terahertz band signal coverage, high-dimensional spatial multiplexing technologies using OAM (orbital angular momentum), and RIS (reconfigurable smart surfaces), but also 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 (artificial intelligence) from the design phase and internalizing end-to-end AI support capabilities, and next-generation distributed computing technologies to achieve services at a complexity level exceeding the operational capabilities of UEs by utilizing ultra-high-performance communication and computing resources. Summary of the Invention

[0008] [Technical Issues]

[0009] This disclosure provides apparatus and methods for calibration of coherent joint transmission. This disclosure relates to calibration for coherent joint transmission.

[0010] Solution to the problem

[0011] According to one aspect of an exemplary embodiment, an apparatus and method for calibration of coherent joint transmission are provided.

[0012] [Beneficial effects of the invention]

[0013] This disclosure provides efficient communication methods in wireless communication systems. Attached Figure Description

[0014] To gain a more complete understanding of this disclosure and its advantages, reference is now made to the following description taken in conjunction with the accompanying drawings, wherein like reference numerals denote like parts:

[0015] Figure 1 An example wireless network according to an embodiment of the present disclosure is shown;

[0016] Figure 2 An example gNodeB (gNB) according to an embodiment of the present disclosure is shown;

[0017] Figure 3 An example UE according to an embodiment of the present disclosure is shown;

[0018] Figure 4A and 4B An example of a wireless transmission and reception path according to an embodiment of the present disclosure is shown;

[0019] Figure 5 An example of a transmitter structure for beamforming according to an embodiment of the present disclosure is shown;

[0020] Figure 6 An example of a transmitter structure for a physical downlink shared channel (PDSCH) in a subframe is shown according to an embodiment of the present disclosure;

[0021] Figure 7 An example of a receiver structure for a PDSCH in a subframe according to an embodiment of the present disclosure is shown;

[0022] Figure 8 An example of a transmitter structure for a Physical Uplink Shared Channel (PUSCH) in a subframe is shown according to an embodiment of the present disclosure;

[0023] Figure 9 An example of a receiver structure for a PUSCH in a subframe according to an embodiment of the present disclosure is shown;

[0024] Figure 10 A diagram showing an antenna port layout according to an embodiment of the present disclosure is provided;

[0025] Figure 11An example of a UE moving along a trajectory in a co-located and distributed antenna array (AG) according to an embodiment of the present disclosure is shown; and

[0026] Figure 12 An example method performed by a UE in a wireless communication system according to an embodiment of the present disclosure is shown.

[0027] Figure 13 A block diagram of a terminal (or user equipment (UE)) according to an embodiment of the present disclosure is shown.

[0028] Figure 14 A block diagram of a base station according to an embodiment of the present disclosure is shown. Detailed Implementation

[0029] This application claims priority to the following applications pursuant to 35 USC §119(e): U.S. Provisional Patent Application No. 63 / 547,096, filed November 2, 2023; U.S. Provisional Patent Application No. 63 / 561,637, filed March 5, 2024; U.S. Provisional Patent Application No. 63 / 634,515, filed April 16, 2024; and U.S. Provisional Patent Application No. 63 / 681,555, filed August 9, 2024, the entire contents of which are incorporated herein by reference.

[0030] Wireless communication is already one of the most successful innovations in modern history. Recently, the number of users of wireless communication services has exceeded five billion and continues to grow rapidly. The demand for wireless data traffic is increasing rapidly due to the growing popularity of smartphones and other mobile data devices (such as tablets, notebook computers, netbooks, e-book readers, and machine-type devices) among consumers and businesses. To meet the high growth of mobile data services and support new applications and deployments, improvements in radio interface efficiency and coverage are crucial. To meet the increased demand for wireless data services since the deployment of 4G communication systems, and to enable various vertical applications, 5G communication systems have been developed and are currently being deployed.

[0031] In one embodiment, a user equipment (UE) is provided. The UE includes a transceiver configured to receive information regarding channel state information (CSI) reports. This information indicates (i) One antenna group, (ii) Reported quantity. The reported quantity corresponds to delay offset (DO) or frequency offset (FO). The UE also includes a processor operatively coupled to the transceiver. The processor is configured to determine a reference antenna group based on this information, and to determine, based on this information and the reference antenna group, targets other than the reference antenna group. In the antenna group ( Each of the transceivers contains calibration-related information (CLI). The transceiver is also configured to send CSI reports that include CLI indicators. The CLI indicators point to the reference antenna group and the CLI.

[0032] In another embodiment, a base station (BS) is provided. The BS includes a processor and a transceiver operatively coupled to the processor. The transceiver is configured to transmit information about CSI reports and receive CSI reports including CLI indicators. This information indicates (i) One antenna group, (ii) Reporting quantity. The reporting quantity corresponds to DO or FO. The CLI indicator indicates the reference antenna group and Apart from the reference antenna group In the antenna group ( Each CLI.

[0033] In another embodiment, a method performed by a UE is provided. The method includes receiving information about a CSI report and determining a reference antenna group based on that information. The information indicates... Antenna group, And the reporting quantity. The reporting quantity corresponds to DO or FO. The method also includes: based on this information and the reference antenna group, determining the reporting quantity for antennas other than the reference antenna group. In the antenna group ( Each CLI; and sending a CSI report including CLI indicators. The CLI indicators indicate the reference antenna group and the CLI.

[0034] Other technical features will be obvious to those skilled in the art based on the following figures, description and claims.

[0035] Before proceeding with the detailed description below, it may be advantageous to define certain words and phrases used throughout this patent document. The term “coupled” and its derivatives refer to any direct or indirect communication between two or more elements, regardless of whether these elements are physically in contact with each other. The terms “transmit,” “receive,” and “communicate,” and their derivatives include both direct and indirect communication. The terms “comprising” and “including,” and their derivatives, mean including but not limited to. The term “or” is inclusive, meaning and / or. The phrase “associated with,” and its derivatives, mean including, being included in, interconnected with, containing, being contained within, connected to or connected to, coupled to or coupled with, able to communicate with, cooperate with, interleaved, juxtaposed, proximate, bound to or bound to, having, possessing the properties of, having a relationship to or with, etc. The term “controller” means any device, system, or part thereof that controls at least one operation. Such a controller may be implemented in hardware or a combination of hardware and software and / or firmware. The functionality associated with any particular controller may be centralized or distributed, local or remote. When used with a list of items, the phrase "at least one" means that different combinations of one or more of the listed items may be used, and it may be necessary to use only one item from the list. For example, "at least one of A, B, and C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, and A and B and C.

[0036] Furthermore, the various functions described below can be implemented or supported by one or more computer programs, each computer program being formed by computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, procedures, functions, objects, classes, examples, associated data, or portions thereof suitable for implementation in appropriate computer-readable program code. The phrase "computer-readable program code" includes any type of computer code, including source code, object code, and executable code. The phrase "computer-readable medium" includes any type of medium accessible by a computer, such as read-only memory (ROM), random access memory (RAM), hard disk drive, optical disc (CD), digital video disc (DVD), or any other type of storage. "Non-transitory" computer-readable media does not include wired, wireless, optical, or other communication links that transmit transient electrical or other signals. Non-transitory computer-readable media includes media in which data can be permanently stored and media in which data can be stored and later rewritten, such as rewritable optical discs or erasable memory devices.

[0037] Definitions of certain other words and phrases are provided throughout this patent document. Those skilled in the art will understand that, in many cases (if not most), such definitions apply to the prior and future use of the words and phrases defined in this way.

[0038] The following discussion Figure 1-14 The various non-limiting embodiments used to describe the principles of this disclosure in this patent document are for illustrative purposes only and should not be construed as limiting the scope of this disclosure in any way. Those skilled in the art will understand that the principles of this disclosure can be implemented in any suitably arranged system or device.

[0039] To meet the increased demand for wireless data services since the deployment of 4G communication systems, and to enable various vertical applications, 5G / NR communication systems have been developed and are currently being deployed. 5G / NR communication systems are implemented in higher frequency (mmWave) bands (e.g., 28 GHz or 60 GHz bands) to achieve higher data rates, or in lower frequency bands (such as 6 GHz) to achieve robust coverage and mobility support. To reduce radio wave propagation loss and increase transmission distance, beamforming, massive MIMO, full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive MIMO technologies are discussed in 5G / NR communication systems.

[0040] In addition, in 5G / NR 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.

[0041] The discussion of 5G systems and their associated frequency bands is for informational purposes only, as some embodiments of this disclosure can be implemented in 5G systems. However, this disclosure is not limited to 5G systems or their associated frequency bands, and embodiments of this disclosure can be utilized in combination with any frequency band. For example, aspects of this disclosure can also be applied to 5G communication systems, 6G, or even newer deployments using terahertz (THz) frequency bands.

[0042] The following literature and standards descriptions are incorporated herein by reference as if fully set forth herein: [Reference 1] 3GPP TS 36.211 v17.3.0, “E-UTRA, Physical Channels and Modulation” [Reference 2] 3GPP TS 36.212 v17.1.0, “E-UTRA, Multiplexing and Channel Coding” [Reference 3] 3GPP TS 36.213 v17.3.0, “E-UTRA, Physical Layer Procedures” [Reference 4] 3GPP TS 36.321 v17.3.0, “E-UTRA, Media Access Control (MAC) Protocol Specification” [Reference 5] 3GPP TS 36.331 v17.3.0, “E-UTRA, Radio Resource Control (RRC) Protocol Specification” [Reference 6] 3GPP TR 22.891 V1.2.0; [Reference 7] 3GPP TS 38.212 v17.3.0, “E-UTRA, NR, Multiplexing and Channel Coding;” [Reference 8] 3GPP TS 38.214 v17.3.0, “E-UTRA, NR, Physical Layer Procedures for Data;” and [Reference 9] 3GPP TS 38.211 V17.3.0, “E-UTRA, NR, Physical Channels and Modulation”

[0043] 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.

[0044] like Figure 1 As shown, the wireless network 100 includes gNB 101 (e.g., a base station, BS), gNB 102, and gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one network 130 (such as the Internet, a proprietary Internet Protocol (IP) network, or other data network).

[0045] 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; UE 112, which may be located in an enterprise; UE 113, which may be a WiFi hotspot; UE 114, which may be located in a first residence; UE 115, which may be located in a second residence; and UE 116, which may be a mobile device, such as a 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 / NR, Long Term Evolution (LTE), LTE-A Advanced, WiMAX, WiFi, or other wireless communication technologies.

[0046] Depending on the network type, the term "base station" or "BS" can refer to any component (or set of components) configured to provide wireless access to a network, such as a transmitting point (TP), a transmitting-receiving point (TRP), an enhanced base station (eNodeB or eNB), a 5G / NR base station (gNB), a macro cell, a femtocell, a WiFi access point (AP), or other wirelessly enabled equipment. A base station can provide wireless access according to one or more wireless communication protocols, such as 5G / NR 3rd Generation Partnership Project (3GPP) NR, Long Term Evolution (LTE), LTE-Advanced (LTE-A), High Speed ​​Packet Access (HSPA), Wi-Fi 802.11a / b / g / n / ac, etc. For convenience, the terms "BS" and "TRP" are used interchangeably in this patent document to refer to network infrastructure components that provide wireless access to remote terminals. Furthermore, depending on the network type, the term "user equipment" or "UE" can refer to any component, such as a "mobile station," "subscriber station," "remote terminal," "wireless terminal," "receiving point," or "user device." For convenience, the terms “user equipment” and “UE” are used in this patent document to refer to a remote wireless device for wireless access to a BS, whether the UE is a mobile device (such as a mobile phone or smartphone) or is generally considered to be a fixed device (such as a desktop computer or vending machine).

[0047] The dashed lines indicate the approximate extent of coverage areas 120 and 125, which 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.

[0048] As described in more detail below, one or more of UEs 111-116 include circuitry, programming, or a combination thereof for performing calibration of coherent joint transmission. In some embodiments, one or more of BSs 101-103 include circuitry, programming, or a combination thereof to support calibration for coherent joint transmission.

[0049] although Figure 1 An example of a wireless network is shown, but more can be found on... Figure 1 Various modifications can be made. For example, wireless network 100 can include any number of gNBs and any number of UEs in any suitable arrangement. 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 (e.g., external telephone networks or other types of data networks).

[0050] Figure 2 An example gNB 102 according to an embodiment of the present disclosure is shown. Figure 2 The embodiment of gNB 102 shown is for illustrative purposes only, and Figure 1 gNBs 101 and 103 can have the same or similar configurations. However, gNBs have a wide variety of configurations, and Figure 2 This disclosure is not intended to limit the scope of any particular implementation of gNB.

[0051] like Figure 2 As shown, gNB 102 includes multiple antennas 205a-205n, multiple transceivers 210a-210n, a controller / processor 225, a memory 230, and a backhaul or network interface 235.

[0052] Transceivers 210a-210n receive incoming radio frequency (RF) signals from antennas 205a-205n, such as signals transmitted by a UE in wireless network 100. Transceivers 210a-210n down-convert the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are processed by receive (RX) processing circuitry in transceivers 210a-210n and / or controller / processor 225, which generates processed baseband signals by filtering, decoding, and / or digitizing the baseband or IF signals. Controller / processor 225 can further process the baseband signals.

[0053] The transmit (TX) processing circuitry in transceivers 210a-210n and / or controller / processor 225 receives analog or digital data (such as voice data, network data, email, or interactive video game data) from controller / processor 225. The TX processing circuitry encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. Transceivers 210a-210n up-convert the baseband or IF signal into an RF signal transmitted via antennas 205a-205n.

[0054] 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 transceivers 210a-210n to receive uplink (UL) channel signals and transmit downlink (DL) channel signals according to well-known principles. The controller / processor 225 may also support additional functions, such as more advanced wireless communication capabilities. For example, the controller / processor 225 may support beamforming or directional routing operations, where outgoing / incoming signals from / to multiple antennas 205a-205n are weighted differently to effectively guide outgoing signals in a desired direction. As another example, the controller / processor 225 may support calibration methods for coherent joint transmission. The controller / processor 225 may support any of a variety of other functions within the gNB 102.

[0055] The controller / processor 225 is also capable of executing programs and other processes residing in the memory 230, such as processes for supporting calibration for coherent joint transmission. The controller / processor 225 can move data into or out of the memory 230 as needed for the execution process.

[0056] The controller / processor 225 is also coupled 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 over a network. Interface 235 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 / NR, LTE, or LTE-A), 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, interface 235 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 235 includes any suitable architecture supporting communication via wired or wireless connections, such as Ethernet or a transceiver.

[0057] 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.

[0058] although Figure 2 An example of gNB 102 is shown, but more can be found on... Figure 2 Various changes can be made. For example, gNB 102 can include any number of Figure 2 Each component shown. Furthermore, Figure 2 The various components can be combined, further subdivided, or omitted, and additional components can be added as needed.

[0059] Figure 3 An example UE 116 according to an embodiment of the present disclosure is shown. Figure 3 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 3 This disclosure is not intended to limit the scope of any particular implementation of the UE.

[0060] like Figure 3 As shown, UE 116 includes an antenna 305, a transceiver 310, and a microphone 320. UE 116 also includes a speaker 330, a processor 340, an input / output (I / O) interface (IF) 345, an input 350, a display 355, and memory 360. Memory 360 includes an operating system (OS) 361 and one or more applications 362.

[0061] Transceiver 310 receives incoming RF signals transmitted by a gNB of wireless network 100 from antenna 305. Transceiver 310 down-converts the incoming RF signals to generate intermediate frequency (IF) or baseband signals. The IF or baseband signals are processed by RX processing circuitry in transceiver 310 and / or processor 340, which generates processed baseband signals by filtering, decoding, and / or digitizing the baseband or IF signals. The RX processing circuitry sends the processed baseband signals to speaker 330 (e.g., for voice data) or to processor 340 (e.g., for web browsing data).

[0062] The TX processing circuitry in transceiver 310 and / or processor 340 receives analog or digital voice data from microphone 320 or other outgoing baseband data (such as network data, email, or interactive video game data) from processor 340. The TX processing circuitry encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. Transceiver 310 up-converts the baseband or IF signal into an RF signal transmitted via antenna 305.

[0063] Processor 340 may include one or more processors or other processing devices and executes OS 361 stored in memory 360 to control the overall operation of UE 116. For example, processor 340 may control transceiver 310 to receive DL channel signals and transmit UL channel signals according to well-known principles. In some embodiments, processor 340 includes at least one microprocessor or microcontroller.

[0064] Processor 340 is also capable of executing other processes and programs residing in memory 360. For example, processor 340 can execute calibration processes for coherent joint transmission as described in the various embodiments of this disclosure. Processor 340 can move data into or out of memory 360 as needed for the execution of the process. In some embodiments, processor 340 is configured to execute application 362 based on OS 361 or in response to signals received from a gNB or operator. Processor 340 is also coupled to I / O interface 345, which provides 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 processor 340.

[0065] The processor 340 is also coupled to an input 350 and a display 355. The input 350 includes, for example, a touchscreen, a keypad, etc. The operator of the UE 116 can use the input 350 to input data into the UE 116. The display 355 may be a liquid crystal display, a light-emitting diode display, or other display capable of displaying text and / or at least limited graphics (such as from a website).

[0066] The memory 360 is coupled to the processor 340. A portion of the memory 360 may include random access memory (RAM), and another portion of the memory 360 may include flash memory or other read-only memory (ROM).

[0067] although Figure 3 An example of UE 116 is shown, but it is possible to modify it. Figure 3 Make various changes. For example, Figure 3 The various components can be combined, further subdivided, or omitted, and additional components can be added as needed. As a specific example, 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). In another example, transceiver 310 may include any number of transceivers and signal processing chains and can be connected to any number of antennas. Furthermore, although... Figure 3 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.

[0068] Figure 4A and Figure 4B Examples of wireless transmit and receive paths 400 and 450 according to embodiments of the present disclosure are shown respectively. For example, transmit path 400 may be described as being implemented in a gNB (such as gNB 102), while receive path 450 may be described as being implemented in a UE (such as UE 116). However, it should be understood that receive path 450 may be implemented in a gNB, and transmit path 400 may be implemented in a UE. In some embodiments, transmit path 400 is configured for calibration of coherent joint transmission as described in embodiments of the present disclosure.

[0069] like Figure 4A As shown, the transmit path 400 includes a channel coding and modulation block 405, a serial-to-parallel (S to P) block 410, an N-size inverse fast Fourier transform (IFFT) block 415, a parallel-to-serial (P to S) block 420, a cyclic prefix addition block 425, and an up-converter (UC) 430. The receive path 450 includes a down-converter (DC) 455, a cyclic prefix removal block 460, an S to P block 465, an N-size fast Fourier transform (FFT) block 470, a parallel-to-serial (P to S) block 475, and a channel decoding and demodulation block 480.

[0070] In transmit path 400, channel coding and modulation block 405 receives a set of information bits, applies coding (such as low-density parity-check (LDPC) coding), and modulates the input bits (such as using quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) to generate a sequence of frequency-domain modulated symbols. Serial-to-parallel block 410 converts (such as demultiplexes) the serial modulated symbols into parallel data to generate N parallel symbol streams, where N is the IFFT / FFT size used in the gNB and UE. IFFT block 415 of size N performs an IFFT operation on the N parallel symbol streams to generate a time-domain output signal. Parallel-to-serial block 420 converts (such as multiplexes) the parallel time-domain output symbols from IFFT block 415 of size N to generate a serial time-domain signal. Cyclic prefix addition block 425 inserts a cyclic prefix into the time-domain signal. Upconverter 430 modulates (such as upconverts) the output of cyclic prefix addition block 425 to an RF frequency for transmission via the wireless channel. The signal can also be filtered at the baseband before being switched to the RF frequency.

[0071] like Figure 4B As shown, downconverter 455 downconverts the received signal to the baseband frequency, and cyclic prefix removal block 460 removes the cyclic prefix to generate a serial time-domain baseband signal. Serial-to-parallel block 465 converts the time-domain baseband signal into a parallel time-domain signal. FFT block 470 of size N performs an FFT algorithm to generate N parallel frequency-domain signals. (P to S) block 475 converts the parallel frequency-domain signals into a sequence of modulated data symbols. Channel decoding and demodulation block 480 demodulates and decodes the modulated symbols to recover the original input data stream.

[0072] Each of gNBs 101-103 can implement a transmission path 400 similar to that sent to UEs 111-116 in the downlink, and a reception path 450 similar to that received from UEs 111-116 in the uplink. Similarly, each of UEs 111-116 can implement a transmission path 400 for sending to gNBs 101-103 in the uplink, and a reception path 450 for receiving from gNBs 101-103 in the downlink.

[0073] Figure 4A and 4B Each component in the system can be implemented using only hardware or a combination of hardware and software / firmware. As a specific example, Figure 4A and 4B At 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 470 and IFFT block 415 can be implemented as configurable software algorithms, where the value of size N can be modified depending on the implementation.

[0074] 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, may be used. It should be understood that for the DFT and IDFT functions, the value of the variable N can be any integer (e.g., 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 (e.g., 1, 2, 4, 8, 16, etc.).

[0075] although Figure 4A and 4B Examples of wireless transmit and receive paths 400 and 450 are shown respectively, but more details can be found on the other side. Figure 4A and 4B Make various changes. For example, you can combine, further subdivide, or omit. Figure 4A and 4B It includes various components and allows for the addition of additional components as needed. Furthermore, Figure 4A and 4B 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.

[0076] Figure 5 An example of a transmitter structure 500 for beamforming according to an embodiment of the present disclosure is shown. In some embodiments, one or more of gNB 102 or UE 116 include transmitter structure 500. For example, one or more of antenna 205 and its associated system or antenna 305 and its associated system may be included in transmitter structure 500. This example is for illustration only, and other embodiments may be used without departing from the scope of the present disclosure.

[0077] Therefore, embodiments of this disclosure recognize that versions 14 LTE and 15 NR support up to 32 Channel State Information Reference Signal (CSI-RS) antenna ports, enabling eNBs or gNBs to be equipped with a large number of antenna elements (such as 64 or 128). Multiple antenna elements can then be mapped onto a single CSI-RS port. For millimeter-wave bands, although the number of antenna elements can be larger for a given form factor, hardware constraints (such as the feasibility of mounting a large number of analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) at millimeter-wave frequencies) can limit the number of CSI-RS ports that can correspond to the number of digital precoding ports, such as... Figure 5As shown. A CSI-RS port can then be mapped to a large number of antenna elements that can be controlled by a set of analog phase shifters 501. A CSI-RS port can then correspond to a subarray that generates a narrow analog beam through analog beamforming 505. This analog beam can be configured to sweep a wider range of angles 520 by changing the phase shifter group across symbols or time slots / subframes. The number of subarrays (equal to the number of RF chains) is related to the number of CSI-RS ports N. CSI-PORT Same. Digital beamforming unit 510 spans N CSI-PORT The analog beams are linearly combined to further increase the precoding gain. While the analog beams are broadband (and therefore not frequency-selective), the digital precoding can vary across frequency subbands or resource blocks. Receiver operation can be envisioned similarly.

[0078] because Figure 5 The transmitter structure 500 utilizes multiple analog beams for transmission and reception (where, for example, one or a few analog beams are selected from a large number of analog beams after a training duration performed occasionally or periodically), hence the term "multi-beam operation" is used to refer to this aspect of the entire system. For illustrative purposes, this includes indicating the assigned DL or ULTX beam (also referred to as "beam indication"), measuring at least one reference signal for calculating and performing beam reporting (also referred to as "beam measurement" and "beam reporting," respectively), and receiving DL or UL transmissions via selecting the corresponding RX beam. Figure 5 The system is also suitable for higher frequency bands, such as >52.6 GHz (also known as frequency range 4 or FR4). In this case, the system can use only analog beams. Due to O2 absorption loss near 60 GHz (an additional loss of ~10 dB per 100 m distance), a larger number and narrower analog beams (and therefore a larger number of radiators in the array) are necessary to compensate for the additional path loss.

[0079] In general, this disclosure relates to wireless communication systems; more specifically, it relates to antenna calibration.

[0080] A communication system comprises a downlink (DL) that transmits signals from a base station (BS) or NodeB to a user equipment (UE), and an uplink (UL) that transmits signals from the UE to a receiving point such as a NodeB. A UE (often also called a terminal or mobile station) can be fixed or mobile, and can be a cellular phone, personal computer, or automated device. A fixed eNodeB (eNB) or gNodeB (gNB) can also be referred to as an access point or other equivalent terms. For LTE systems, a NodeB is typically referred to as an eNodeB. For NR systems, a NodeB is typically referred to as a gNodeB.

[0081] In communication systems such as NR or LTE, DL signals can include data signals conveying information content, control signals conveying DL control information (DCI), and reference signals (RS), also known as pilot signals. The eNodeB transmits data information via the Physical DL Shared Channel (PDSCH). The eNB / gNB transmits DCI via the Physical DL Control Channel (PDCCH). The eNB / gNB transmits one or more types of RS, including Channel State Information RS (CSI-RS) or Demodulated RS (DMRS). The eNB / gNB can transmit CSI-RS for time / frequency tracking (also known as Common Reference Signal (CRS) in LTE or TRS in NR) for CSI reporting. DMRS can be transmitted only within the bandwidth (BW) of the corresponding PDSCH, and the UE can use DMRS to demodulate data or control information in the PDSCH or PDCCH, respectively. The transmission time interval of the DL channel is called a subframe or time slot and can have a duration of, for example, 1 millisecond or a value depending on the subcarrier spacing (SCS).

[0082] The DL signal also includes the transmission of logical channels carrying system control information. The Broadcast Control Channel (BCCH) is mapped to a transport channel called the Broadcast Channel (BCH) when conveying the Master Information Block (MIB), or to the DL Shared Channel (DL-SCH) when conveying the System Information Block (SIB), see also References 3 and 5. Most system information is included in different SIBs transmitted using the DL-SCH. The presence of system information on the DL-SCH in a subframe (or time slot) can be indicated by the transmission of the corresponding PDCCH with codewords scrambled with special system information RNTI (SI-RNTI). Alternatively, scheduling information for SIB transmission can be provided in an earlier SIB, and scheduling information for the first SIB (SIB-1) can be provided by the MIB.

[0083] DL resource allocation is performed on a per-subframe (or time slot) and per-PRB (Physical Resource Block) set basis. A transport BW comprises frequency resource elements called resource blocks (RBs). Each RB includes... Each subcarrier or resource element (RE) can have 12 REs. A unit of one RB on a subframe (or slot) is called a PRB. This allows for the allocation of resources to the UE. Total for PDSCH transmission BW RB of RE.

[0084] UL signals can include data signals conveying data information, control signals conveying UL control information (UCI), and UL RS. UL RS includes DMRS and SNR (Sounding RS). The UE only transmits DMRS in the corresponding PUSCH or PUCCH BW. The eNB / gNB can use DMRS to demodulate data signals or UCI signals. The UE transmits SRS to provide UL CSI to the eNB / gNB. The UE transmits data information or UCI through the corresponding Physical UL Shared Channel (PUSCH) or Physical UL Control Channel (PUCCH). If the UE needs to transmit data information and UCI in the same UL subframe (or slot), it can multiplex both in the PUSCH. UCI includes a Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) message indicating a correct (ACK) or incorrect (NACK) detection or absence of PDCCH detection (DTX) in the PDSCH, a Scheduling Request (SR) indicating whether the UE has data in its buffer, and Channel State Information (CSI) enabling the eNB / gNB to perform link adaptation for the PDSCH transmission to the UE. HARQ-ACK messages are also sent by the UE in response to the detection of a PDCCH indicating the release of a semi-persistent PDSCH (see also reference 3).

[0085] A UL subframe (or time slot) consists of two time slots. Each time slot includes space for transmitting data information, UCI, DMRS, or SRS. One symbol. The frequency resource unit of the UL system BW is RB. The UE is allocated A total of RBs are used to transmit BW. Each RE. The last few subframe (or time slot) symbols can be used to multiplex SRS transmissions from one or more UEs.

[0086] Figure 6 An example of a transmitter structure 600 for PDSCH in a subframe according to an embodiment of the present disclosure is shown. For example, the transmitter structure 600 can be... Figure 1 This is implemented in gNB 102. This example is for illustration only, and other embodiments may be used without departing from the scope of this disclosure.

[0087] like Figure 6As shown, information bit 610 is encoded by encoder 620, such as a turbo encoder, and modulated by modulator 630, for example using quadrature phase shift keying (QPSK) modulation. Serial-to-parallel (S / P) converter 640 generates M modulation symbols, which are then provided to mapper 650 to map to REs selected by transmission BW for the assigned PDSCH transmission BW by transmission BW selection unit 655. Unit 660 applies inverse fast Fourier transform (IFFT), and the output is then serialized by parallel-to-serial (P / S) converter 670 to create a time-domain signal, filtered by filter 680, and transmitted as signal 690. Additional features such as data scrambling, cyclic prefix insertion, time windowing, interleaving, etc., are well known in the art and are not shown for simplicity.

[0088] Figure 7 An example of a receiver structure 700 for a PDSCH in a subframe according to an embodiment of the present disclosure is shown. For example, the receiver structure 700 may be composed of... Figure 1 This can be implemented using any of UEs 111-116. This example is for illustrative purposes only, and other embodiments may be used without departing from the scope of this disclosure.

[0089] refer to Figure 7 The received signal 710 is filtered by filter 720, the RE 730 for the allocated receive BW is selected by BW selector 735, unit 740 applies Fast Fourier Transform (FFT), and the output is serialized by parallel-to-serial converter 750. Subsequently, demodulator 760 coherently demodulates data symbols by applying a channel estimate obtained from DMRS or CRS (not shown), and decoder 770 (e.g., turbo decoder) decodes the demodulated data to provide an estimate of information data bits 780. For simplicity, additional functions such as time windowing, cyclic prefix removal, descrambling, channel estimation, and deinterleaving are not shown.

[0090] Figure 8 An example of a transmitter structure 800 for PUSCH in a subframe according to an embodiment of the present disclosure is shown. For example, transmitter structure 800 can be... Figure 1 This is implemented in gNB 103. This example is for illustration only, and other embodiments may be used without departing from the scope of this disclosure.

[0091] like Figure 8As shown, information data bits 810 are encoded by encoder 820 (e.g., turbo encoder) and modulated by modulator 830. Discrete Fourier Transform (DFT) unit 840 applies DFT to the modulated data bits, transmission BW selection unit 855 selects RE 850 corresponding to the assigned PUSCH transmission BW, unit 860 applies IFFT, and after cyclic prefix insertion (not shown), filter 870 applies filtering and transmits signal 880.

[0092] Figure 9 An example of a receiver structure 900 for a PUSCH in a subframe according to an embodiment of the present disclosure is shown; for example, the receiver structure 900 may be composed of... Figure 3 The UE 116 implementation is described above. This example is for illustrative purposes only, and other embodiments may be used without departing from the scope of this disclosure.

[0093] like Figure 9 As shown, the received signal 910 is filtered by filter 920. Subsequently, after removing the cyclic prefix (not shown), unit 930 applies FFT, receive BW selector 945 selects RE 940 corresponding to the assigned PUSCH receive BW, unit 950 applies inverse DFT (IDFT), demodulator 960 coherently demodulates data symbols by applying channel estimation obtained from DMRS (not shown), and decoder 970 (e.g., turbo decoder) decodes the demodulated data to provide an estimate of information data bits 980.

[0094] The 3GPP 5G NR specification defines two types of frequency ranges (FRs). The range below 6 GHz is referred to as frequency range 1 (FR1), and the millimeter wave range is referred to as frequency range 2 (FR2). This article shows examples of frequency ranges FR1 and FR2.

[0095] Table 1

[0096]

[0097] For MIMO in FR1, up to 32 CSI-RS antenna ports per CSI-RS resource are supported, and in FR2, up to 8 CSI-RS antenna ports per CSI-RS resource are supported. (Spatial or digital) precoding / beamforming can be used across these numerous antenna ports to achieve MIMO gain. Depending on the carrier frequency and the feasibility of the RF / HW-related components, (spatial) precoding / beamforming can be fully digital or a hybrid analog-digital approach.

[0098] In fully digital beamforming, there can be a one-to-one mapping between antenna ports and antenna elements, or multiple antenna elements can be virtualized into a single antenna port using a "static / fixed" virtualization. Each antenna port can be digitally controlled. Therefore, spatial multiplexing across antenna ports is feasible.

[0099] In next-generation cellular standards (e.g., 6G), new carrier bands, such as FR4 (>52.6 GHz), terahertz (>100 GHz), and mid-to-high frequency bands (10-15 GHz), can be evaluated in addition to FR1 and FR2. The number of CSI-RS ports that can be supported for these new bands may differ from that for FR1 and FR2. In particular, for the 10-15 GHz band, the maximum number of CSI-RS antenna ports may be greater than that for FR1 due to the smaller antenna form factor and the feasibility of fully digital beamforming at these frequencies (as in FR1). For example, the number of CSI-RS antenna ports could grow to 128. Furthermore, NW deployments / topologies at these frequencies are also expected to be denser / distributed; for example, antenna ports distributed across multiple (potentially non-co-located and therefore geographically separated) TRPs within a cellular area could be a primary scenario of interest, thus the number of CSI-RS antenna ports for MIMO could be even larger (e.g., up to 256).

[0100] Similarly, for cellular systems that typically operate at low carrier frequencies (e.g., below 1 GHz, less than 1 GHz), supporting a large number of CSI-RS antenna ports (e.g., 32) or numerous antenna elements at a single location or remote radio head (RRH) or TRP is challenging because a larger antenna form factor is required compared to systems operating at higher frequencies such as 2 GHz or 4 GHz, considering the carrier frequency wavelength. At such low frequencies, the maximum number of CSI-RS antenna ports that can coexist at a site (or RRH or TRP) can be limited to, for example, 8. This limits the spectral efficiency of such systems. Specifically, the multi-user MIMO (MU-MIMO) spatial multiplexing gain provided by a large number of CSI-RS antenna ports (e.g., 32) cannot be achieved due to the antenna form factor limitation. A reasonable approach to operating systems with a large number of CSI-RS antenna ports at low carrier frequencies is to distribute the physical antenna ports across different panels / RRHs / TRPs, which can be non-co-located. Multiple sites or panels / RRH / TRPs can still be connected to a single (common) basic unit that forms a single antenna system, so signals transmitted / received via multiple distributed RRH / TRPs can still be processed at a centralized location.

[0101] As described above, for low (FR1), high (FR2 and above), or mid (6-15 GHz) frequency bands, NW topologies / architectures may become increasingly distributed in the future due to the aforementioned reasons (e.g., use cases, HW requirements, antenna form factor, mobility, etc.). In this disclosure, such distributed systems are referred to as DMIMO or multi-TRP (mTRP) systems (multiple antenna port groups, which may be non-co-located). Transmissions in such systems can be coherent joint transmission (CJT), i.e., transmission layers can be used across / using multiple TRPs, or they can be incoherent joint transmission (NCJT). Due to the distributed nature of the operation, antenna port (or TRP) groups need to be calibrated / synchronized by compensating for non-ideals, such as time / frequency / phase offsets across TRPs due to HW impairments, different delay distributions, and Doppler distributions associated with different TRPs (in high-speed scenarios).

[0102] In wireless communication systems, MIMO is generally considered a fundamental feature for achieving high system throughput requirements. One of the key components of a MIMO transmission scheme is accurate CSI acquisition at the eNB (or gNB) (or TRP). Specifically, for MU-MIMO, the availability of accurate CSI is essential to guarantee high MU performance. For Time Division Duplex (TDD) systems, CSI can be acquired using SRS transmissions that depend on channel reciprocity. On the other hand, for Frequency Division Duplex (FDD) systems, CSI can be acquired using CSI-RS transmissions from the eNB (or gNB) as well as CSI acquisition and feedback from the UE.

[0103] In 5G or NR systems [References 7, 8], low-resolution (aka Type I) and high-resolution (aka Type II) CSI reporting mechanisms are supported. Additionally, to reduce Type II CSI reporting, Type II CSI based on frequency domain (FD) compression is also supported, which is based on (a) spatial domain (SD) compression. (b) FD base (c) Coefficients of linear combinations of SD and FD bases For (full TDD or partial FDD) reciprocity, beamforming can be performed on the CSI-RS port (using SRS measurements, assuming UL-DL channel reciprocity in angle / delay), and the SD base corresponds to the port selection base.

[0104] In version 18, type IICSI based on FD compression was further enhanced for use cases of CJTs spanning up to four TRPs, under ideal assumptions such as fully time- and frequency-synchronized mTRPs, phase-coherent antenna ports, and ideal backhaul links. However, in practice, these assumptions are invalid, and calibration / synchronization across TRPs is required for CJTs to be feasible.

[0105] Massive MIMO base stations or TRPs use onboard coupling networks and calibration circuitry (referred to as onboard calibration) to measure the gain and phase difference between transceivers in the same radio frequency (RF) unit to maintain reciprocity between DL and UL channels, particularly in TDD systems. For onboard calibration, an RF chain corresponding to one antenna port serves as a reference for other RF chains used for other antenna ports. Embodiments of this disclosure recognize that, in the case of mTRP systems, the signal of such a reference transceiver needs to be shared among distributed RRHs / panels / modules / TRPs that are physically far apart or non-co-located. Using RF cables to distribute the reference is not preferred as it limits deployment scenarios. Furthermore, using different local oscillators (LOs) among distributed antenna modules presents additional challenges in achieving calibration, as the phase of the LOs can drift. Periodic calibration is also required to compensate for phase drift.

[0106] Question 1: In one example, the timing offset can be represented as ,That The delay spread is due to timing differences between (distributed, non-co-located) TRPs and / or different propagation delays from different TRPs, which is equivalent to an increase in frequency selectivity of the composite channel. The minimum frequency (supported in NR) granularity is 2 RBs (for the Precoding Matrix Indicator (PMI)) and 4 RBs (CQI), which correspond to maximum delay spreads of 2.8 and 1.4 microseconds respectively for SCS=15 and 30 kHz. This delay spread decreases further with increasing frequency granularity (due to timing offset). For large delay spreads, the required frequency granularity for CJT (across TRPs) will be less than 2 RBs.

[0107] Table 2: Minimum OTA Frequency Error Requirements

[0108] Table 2

[0109]

[0110] Question 2: In one example, the frequency offset can be expressed as in The frequency difference between TRPs is due to the non-ideal (and potentially different) local oscillators or crystal types at different TRPs. As shown above, according to TS 38.104, the minimum frequency error is 0.05 ppm. The phase change caused by the frequency error can be significant, especially at higher carrier frequencies.

[0111] Typically, the combined (time-frequency) TF offset can be expressed as: Regarding the feasibility of CJT, It needs to be calibrated frequently.

[0112] Question 3: Non-ideal backhaul links between TRPs, especially when the backhaul link is not a fiber optic cable.

[0113] Question 4: Phase coherence across antenna ports, within TRP (within each TRP) and between TRPs (across TRPs).

[0114] This disclosure provides mechanisms and procedures for problems 1 and 2, which are more serious than problems 3 and 4.

[0115] In one example, TRP or RRH may be functionally equivalent to (and therefore may be replaced by) one or more of the following or interchangeable with one or more of the following: antenna or antenna group (multiple antennas), antenna port, antenna port group (multiple ports), CSI-RS resource, multiple CSI-RS resource, CSI-RS resource set, multiple CSI-RS resource set, antenna panel, multiple antenna panels, Tx-Rx entity, (analog) beam, (analog) beam group, cell, cell group.

[0116] This disclosure provides an over-the-air (OTA) signaling mechanism for calibration between multiple TRPs or RRHs. This mechanism includes 1) DL RS (e.g., CSI-RS) transmission and measurement (performed by the UE) from the mTRP, and 2) reporting related to calibration information (e.g., amperes / phase of calibration coefficients). Aspects of this disclosure are as follows:

[0117] - Quantization of calibration coefficients based on CP length units

[0118] - Delay offset / frequency offset report

[0119] -Refer to CSI-RS resources, reference latency values, and reports.

[0120] Although the focus of this disclosure is on 3GPP 5G NR communication systems, various embodiments can generally be applied to UEs operating in other RATs and / or standards, such as different versions / generations of 3GPP standards (including super 5G, 6G, etc.), IEEE standards (such as 802.16 WiMAX and 802.11 Wi-Fi), etc.

[0121] Descriptions of example embodiments are provided on the following pages.

[0122] The text and accompanying drawings are provided by way of example only to aid the reader in understanding this disclosure. They are not intended and should not be construed as limiting the scope of this disclosure 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 may be made to the illustrated embodiments and examples without departing from the scope of this disclosure.

[0123] Aspects, features, and advantages of this disclosure will become apparent from the following detailed description simply by illustrating several specific embodiments and implementations, including the best mode contemplated for carrying out this disclosure. Embodiments of this disclosure are also capable of having other and different embodiments, and several details thereof may be modified in various obvious ways without departing from the spirit and scope of this disclosure. Therefore, the drawings and description are to be considered illustrative in nature and not restrictive. Embodiments of this disclosure are shown in the accompanying figures by way of example and not limitation.

[0124] In the following text, for the sake of brevity, both FDD and TDD will be regarded as duplex methods for DL ​​and UL signaling.

[0125] Although the following exemplary descriptions and embodiments presuppose orthogonal frequency division multiplexing (OFDM) or orthogonal frequency division multiple access (OFDMA), this disclosure can be extended to other OFDM-based transmission waveforms or multiple access schemes, such as filtered OFDM (F-OFDM).

[0126] The disclosure of this document covers several components that can be used in combination or as a standalone solution.

[0127] The following components and embodiments are applicable to UL transmissions with cyclic prefix OFDM (CP-OFDM) waveforms, as well as DFT-SOFDM (DFT extended OFDM) and SC-FDMA (single-carrier FDMA) waveforms. Furthermore, the following components and embodiments are applicable to UL transmissions when the time scheduling unit is a subframe (which may include one or more time slots) or a single time slot.

[0128] In this disclosure, the frequency resolution (reporting granularity) and span (reporting bandwidth) of the CSI or calibration coefficient report can be defined according to the frequency "subband" and "CSI reporting band" (CRB), respectively.

[0129] Subbands used for CSI or calibration coefficient reporting are defined as a set of consecutive PRBs, representing the smallest frequency unit used for CSI or calibration coefficient reporting. For a given value of the DL system bandwidth, 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 elements (MAC CE). The number of PRBs in a subband can be included in the CSI or calibration coefficient reporting settings.

[0130] A “CSI or calibration coefficient reporting band” is defined as a set / collection of continuous or discontinuous subbands in which CSI or calibration coefficient reporting is performed. For example, a CSI or calibration coefficient reporting band may include subbands within the DL system bandwidth. This can also be referred to as a “full band”. Alternatively, a CSI or calibration coefficient reporting band may include only a set of subbands within the DL system bandwidth. This can also be referred to as a “partial band”.

[0131] The term "CSI or calibration coefficient report band" is used only as an example to represent the function. Other terms such as "CSI or calibration coefficient report sub-band set" or "CSI or calibration coefficient report bandwidth" may also be used.

[0132] Regarding UE configuration, a UE (e.g., UE 116) may be configured with at least one CSI or calibration coefficient reporting band. This configuration can be semi-static (via higher-layer signaling or RRC) or dynamic (via MAC CE or L1 DL control signaling). When multiple (N) CSI or calibration coefficient reporting bands are configured (e.g., via RRC signaling), the UE can report CSIs associated with N ≤ N CSI reporting bands. For example, large system bandwidths >6 GHz may require multiple CSI or calibration coefficient reporting bands. The value of n can be configured semi-static (via higher-layer signaling or RRC) or dynamic (via MAC CE or L1 DL control signaling). Alternatively, the UE can report a recommended value for n via the UL channel.

[0133] Therefore, the frequency granularity of CSI parameters can be defined for each CSI reporting band as follows. When a CSI parameter is used for M within the CSI reporting band... n When there are multiple subbands, the CSI parameters are configured for having M n A "single" report within a sub-band of the CSI reporting frequency band. When targeting M within the CSI reporting frequency band... n When each subband reports a CSI parameter, the CSI parameter is configured to have M n The "subband" of the CSI report frequency band.

[0134] Figure 10 A diagram of an antenna port layout 1000 according to an embodiment of the present disclosure is shown. For example, the antenna port layout 1000 can be constructed by... Figure 2 The BS 102 implementation. This example is for illustrative purposes only and may be used without departing from the scope of this disclosure.

[0135] refer to Figure 10N1 and N2 are the number of antenna ports with the same polarization in the first and second dimensions, respectively. For a 2D antenna port layout, N1>1, N2>1, and for a 1D antenna port layout, N1>1 and N2=1 (or N1=1 and N2>1). For a single-polarization (or common-polarization) antenna port layout, the total number of antenna ports is... Furthermore, for a dual-polarized antenna port layout, the total number of antenna ports is... .exist Figure 10 The illustration shows two antenna polarizations, where "X" represents two antenna polarizations. In this disclosure, the term "polarization" refers to a set of antenna ports having the same polarization. For example, antenna ports... Including the first antenna polarization, and the antenna port. Including the second antenna polarization, among which It refers to the number of CSI-RS antenna ports, and It is the starting antenna port number (e.g.) The antenna ports are 3000, 3001, 3002, ...). Dual-polarized antenna expenditures are anticipated in this disclosure. However, the embodiments (and examples) in this disclosure are general and also applicable to single-polarized antenna layouts.

[0136] make This refers to the number of antenna arrays (AGs). (Reference) Figure 10 When there are multiple antenna groups ( When ), it is expected that each group ( (Including two dimensions) of The dual-polarized antenna port. Note that the antenna port layout can be the same in different antenna groups. and ( ), or they can differ across antenna groups. For groups The number of antenna ports is or (Used for common polarization or dual polarization respectively).

[0137] In one example, the antenna group corresponds to an antenna panel. In one example, the antenna group corresponds to a TRP. In one example, the antenna group corresponds to an RRH. In one example, the antenna group corresponds to a CSI-RS antenna port of a non-zero power (NZP) CSI-RS resource. In one example, the antenna group corresponds to a subset of CSI-RS antenna ports of NZP CSI-RS resources (including multiple antenna groups). In one example, the antenna group corresponds to CSI-RS antenna ports of multiple NZP CSI-RS resources (e.g., including a set of CSI-RS resources).

[0138] In one example, the antenna group corresponds to a reconfigurable smart surface (RIS), where the antenna group can be (re)configured more dynamically (e.g., via MAC CE and / or DCI). For example, the number of antenna ports associated with the antenna group can be dynamically changed.

[0139] Figure 11 An example of a UE moving on a trajectory 1100 located in a co-located and distributed AG according to an embodiment of the present disclosure is shown. For example, the trajectory 1100 located in a co-located and distributed AG can be... Figure 1 This example is for illustrative purposes only and may be used without departing from the scope of this disclosure.

[0140] In one example scenario, multiple AGs can be located in the same location or distributed across different areas, and can serve either static (non-mobile) or mobile UEs. (Reference) Figure 11 The diagram illustrates the AG serving a mobile UE. When the UE moves from location A to another location B, the UE measures the channel, for example via NZP CSI-RS resources (and can also measure interference, for example via CSI Interference Measurement (CSI-IM) resources or CSI-RS resources for interference measurement), and uses the measurement to determine / report CSI or calibration-related information, while taking into account joint transmissions from multiple AGs.

[0141] In one example, the antenna architecture of the MIMO system is structured. For instance, the antenna structure at each AG is dual-polarized (e.g., Figure 10 (Single-panel or multi-panel configuration shown). The antenna structure at each AG can be the same. Alternatively, the antenna structure at one AG can be different from that of another AG. Similarly, the number of ports at each AG can be the same. Alternatively, the number of ports at one AG can be different from that of another AG.

[0142] In another example, the antenna architecture of a MIMO system is unstructured. For instance, the antenna structure at one AG can differ from that at another AG.

[0143] The remaining parts of this disclosure envision a structured antenna architecture. For simplicity, each AG corresponds to a panel (see [link to disclosure]). Figure 10 Although in practice an AG can have multiple panels, this disclosure is not limited to the single panel assumption at each AG and can be easily extended (covered) to the case when the AG has multiple antenna panels.

[0144] In one embodiment, AG constitutes (or corresponds to or is equivalent to) at least one of the following:

[0145] - In one example, AG corresponds to TRP.

[0146] - In one example, AG corresponds to CSI-RS resources. The UE is configured with Non-zero power (NZP) CSI-RS resources, and CSI reporting is configured to span multiple CSI-RS resources. This is similar to the Class B K>1 configuration in Release 14 LTE. An NZP CSI-RS resource can belong to a CSI-RS resource set or multiple CSI-RS resource sets (e.g., Each resource set comprises one CSI-RS resource. Details are as explained in this disclosure.

[0147] - In one example, AG corresponds to a CSI-RS resource group, where the group includes one or more NZP CSI-RS resources. The UE is configured with A non-zero power (NZP) CSI-RS resource, and CSI reporting is configured to span multiple CSI-RS resources from the resource group. This is similar to the Class B K>1 configuration in Release 14 LTE. An NZP CSI-RS resource can belong to a CSI-RS resource set or multiple CSI-RS resource sets (e.g., Each resource set comprises one CSI-RS resource. Details are as explained in this disclosure. In particular, Each CSI-RS resource can be divided into Resource groups. Information about resource groups can be provided with CSI-RS resource settings / configuration, or with CSI reporting settings / configuration, or with CSI-RS resource configuration.

[0148] - In one example, AG corresponds to a subset (or group) of CSI-RS ports. The UE is configured with at least one NZPCSI-RS resource, which includes (or is associated with) CSI-RS ports, which can be grouped (or divided) into multiple subsets / groups / parts of antenna ports, each subset / group / part corresponding to (or constituting) an AG. Information about port subsets or port groups can be provided with CSI-RS resource settings / configurations, or with CSI reporting settings / configurations, or with CSI-RS resource configuration.

[0149] - In one example, depending on the configuration, AG corresponds to one or more examples described in this article. For example, the configuration may be explicit via parameters (e.g., RRC parameters). Alternatively, it may be implicit.

[0150] In one example, when implicit, it can be based on The value of . For example, when When referring to CSI-RS resources, AG corresponds to one or more examples described in this document, and when When referring to CSI-RS resources, AG corresponds to one or more examples described in this document.

[0151] In another example, the configuration can be based on the codebook of the configuration. For example, when the codebook corresponds to a decoupled codebook (a modular or separate codebook for each AG), the AG corresponds to a CSI-RS resource or a resource group, and when the codebook corresponds to a coupled (joint or coherent) codebook (a joint codebook across AGs), the AG corresponds to a subset (or group) of CSI-RS ports.

[0152] In one example, when an AG maps (or corresponds to) a CSI-RS resource or resource group, and the UE can select a subset of AGs (resources or resource groups) and report CSI or calibration-related information for the selected AG (resource or resource group), the selected AG can be reported via an indicator (e.g., via UCI part 1 of a two-part UCI). For example, the indicator could be a CSI-RS Resource Indicator (CRI), a PMI (component), or a new indicator (e.g., a bitmap).

[0153] In one example, when an AG maps (or corresponds to) a CSI-RS port group, and the UE can select a subset of AGs (port groups) and report CSI or calibration-related information for the selected AG (port group), the selected AG can be reported via an indicator (e.g., via UCI part 1 of a two-part UCI). For example, the indicator could be CRI or PMI (component) or a new indicator (e.g., a bitmap).

[0154] In one example, the CSI-RS in this disclosure includes at least one or a combination of the following: a CSI-RS for tracking (TRS), a CSI-RS for CSI, a CSI-RS for beam management (BM), a CSI-RS for mobility, or an NZP CSI-RS resource for IMR (interference measurement), or a new type / purpose of CSI-RS, namely a CSI-RS for calibration.

[0155] In this disclosure, one or more CSI-RS resources described in each example / example may be replaced or interpreted by one or more sets of CSI-RS resources.

[0156] In one embodiment, the UE is configured with a calibration mechanism, wherein the UE is configured to perform one or more UL RS transmissions, or / and perform one or more DL RS receptions / measurements, and / or report calibration-related information (e.g., calibration coefficients for each TRP).

[0157] This configuration can be executed via higher-level (RRC) signaling.

[0158] - In one example, this configuration corresponds to the CSI resource settings configured via the higher-level IE CSI-ResourceConfig.

[0159] - In one example, this configuration corresponds to the CSI resource set configured via the higher-level IE NZP-CSIRSResourceSet.

[0160] - In one example, this configuration corresponds to the NZP CSI resource configured via the higher-level IE NZP-CSIRSResource.

[0161] - In one example, this configuration corresponds to the CSI reporting settings configured via the higher-level IE CSI-ReportConfig.

[0162] In one example, a DL RS can be one or more of the following: a CSI-RS for CSI reporting, a CSI-RS for tracking (TRS), a CSI-RS for beam reporting, a DL DMRS, or a synchronization signal / physical broadcast channel (SSB / PBCH) or a new type / purpose CSI-RS (i.e., a CSI-RS for calibration). In one example, a DL RS can be a dedicated or new DL RS (for calibration purposes).

[0163] In one example, the UL RS can be one or more of the following: application = CB, application = non-CB, application = beam management, application = antenna switching, or UL DMRS. In one example, the UL RS can be a dedicated or new UL RS (for calibration purposes).

[0164] In one example, DL RS can be simply aperiodic (AP).

[0165] In one example, DL RS can be AP or semi-persistent (SP).

[0166] In one example, DL RS can be AP or periodic (P).

[0167] In one example, DL RS can be SP or P.

[0168] In one example, DL RS can be AP, SP, or P.

[0169] In one example, UL RS can be simply aperiodic (AP).

[0170] In one example, the UL RS can be either AP or semi-persistent (SP).

[0171] In one example, UL RS can be AP or periodic (P).

[0172] In one example, the UL RS can be either SP or P.

[0173] In one example, the UL RS can be AP, SP, or P.

[0174] In one example, the report could be simply an AP. In this case, the report could be triggered via DCI (e.g., the CSI request field in UL-DCI).

[0175] In one example, the report can be either an AP or an SP. For an AP, the report can be triggered via DCI (e.g., the CSI request field in UL-DCI), and for an SP, the report can be triggered via MAC CE or DCI.

[0176] In one example, the report can only be initiated (or triggered) by the UE. In this case, the report can be triggered via a ULMAC CE (e.g., a MAC CE for Power Headroom Report (PHR) reporting) or via a pre-notification message sent by the UE, which can be sent via an SR (Schedule Request) or via a UCI (Pre-configured PUCCH or PUSCH).

[0177] The term "precoder" in this disclosure may be replaced by spatial information (or Transmission Configuration Indication (TCI) status or spatialRelationInfo) or source RS or spatial filter, beamformer, beamforming vector / matrix, precoding vector / matrix or any other functional equivalent that may be used for DL / UL RS reception / transmission.

[0178] In one embodiment, the UE (e.g., UE 116) is configured to measure and include calibration-related information (CLI) reports (e.g., CSI or calibration reports) to achieve / facilitate cross-platform communication. Calibration / synchronization of TRP, AG, or CSI-RS resources. In one example, this can be achieved via instructions. Measurements are configured via the higher-level IE CSI-ResourceConfig of an NZP CSI-RS resource set. In one example, measurements can be configured via the higher-level IE NZP-CSIRS-ResourceSet, which indicates the NZP CSI-RS resource set. In another example, measurements can be configured via the higher-level IE MeasObj. In yet another example, reports can be configured via the higher-level CSI-ReportConfig, where reportType is set to a new value, such as "calibration" or "cjt-calibration".

[0179] make Is with the first Measurements associated with a TRP (or CSI-RS resource or DL ​​RS), where and It is a TF unit The composite / aggregation channel at the location, and It is the offset associated with TRP, where Configured by NW (e.g., MAC-CE, DCI, RRC), or reported by UE (e.g., via bitmap indicators or combination indicators included in the CSI report) or .

[0180] As described in this disclosure, One of the TRPs can be a reference, and its offset can be fixed, for example, fixed to zero. Without loss of generality, the reference TRP (resource) corresponds to... (The first TRP) ,Right now .

[0181] In one example, based on measurement, The value can be evaluated / used to determine the report.

[0182] In one example, a low-pass or window-based approach could be used for reporting. In one example, the window corresponds to the area around the reference value. Value. For example, and / ,in( In the corresponding window length that can be evaluated / used for reporting or In the case of the maximum value, ( It can be fixed, configured, or reported by the UE.

[0183] In one example, the unit of Cross-Link Interference (CLI) reporting is at least one of the following:

[0184] - In one example, for time offset, the unit could be based on CP length, symbol duration, or slot duration. For example, within a window / interval. Value, [0, x], where x = CP length, minimum measurement interval. In one example, seconds or Microseconds. In one example... seconds or ,in .

[0185] - In one example, for time offset, the unit can be based on a fractional factor (between 0 and 1) of time-minute (TD) units. For example, within a window / interval. Value, [0, x], x = TD unit length.

[0186] - In one example, for frequency error (in ppm), the unit can be based on the window / interval specified in 38.104 (from RAN4), [0,x] x = frequency error value. For example, within the window / interval. Value, [0, x] or x = FD unit length. In one example, ppm (parts per million).

[0187] - In one example, for time offset, the unit could be based on normalized CP length, symbol duration, or slot duration. For example, within a window / interval. The value, [0,1], where 1 corresponds to the CP length, the minimum measurement interval. In one example, the CP length... seconds or In one example, the CP length seconds or in .

[0188] - In one example, for time offset, the unit could be based on a normalized fractional factor (between 0 and 1) of TD units. For example, within a window / interval. The value is [0,1], where 1 corresponds to a TD unit length.

[0189] - In one example, for frequency error (in ppm), the unit can be based on a normalized window / interval, [0,1] or 1 corresponds to a frequency error value, as specified in 38.104 (from RAN4). For example, within a window / interval. Value, [0, 1] or x = FD unit length. In one example, ppm (parts per million).

[0190] In one example, CLI corresponds to at least one indicator that indicates a measurement RS. For example, when the measurement RS is an NZPCSI-RS or an SSB / PBCH block or another DL RS, the indicator can be a CRI or an SSB Resource Indicator (SSBRI) or another DLRS indicator. At least one indicator can provide implicit information about the offset.

[0191] In one example, in this disclosure, a value may be replaced by or interpreted as a range.

[0192] In one example, CLI corresponds to the value or set of pairs or instructions An indicator of the (quantized) value. At least one of the following examples from the alphabet set is used for quantization. .

[0193] - In one example, the alphabet set corresponds to a uniform quantizer in a linear scaling. .

[0194] In one example Including uniform / equal Interval / Separated Value, its The value in is the number of bits used for quantization, and This is the maximum value. In one example, these... Values ​​include 0 and / or .

[0195] In one example, regarding time, ,in It is the CP length, and It's the scaling ratio. In one example... .

[0196] In one example, regarding time, ,in It is the duration of the time slot, and It refers to the scaling ratio. In one example... .

[0197] In one example, for frequency ,in This is the minimum requirement for frequency error, for example, in parts per million (ppm).

[0198] In one example Including uniform / equal Interval / Separation Value, of which It is the number of bits used for quantization. It is the minimum value, and It is the maximum value. In one example, Values ​​include or / and .

[0199] In one example Including uniform / equal Interval / Separated value.

[0200] - In one example, the alphabet set corresponds to a logarithmic scale uniform quantizer. .

[0201] - In one example, the alphabet set corresponds to a non-uniform (e.g., exponential) quantizer. .

[0202] In one example Includes version 15 3-bit amplitude alphabet set (Table 3).

[0203] In one example Includes version 16 3-bit or 4-bit amplitude alphabet sets (Tables 4 and 5).

[0204] In one example Includes the version 18 amplitude alphabet set used for Time Domain Channel Attributes (TDCP) reporting (Table 6).

[0205] Table 3: Elements arrive mapping

[0206] Table 3

[0207]

[0208] Table 4: mapping

[0209] Table 4

[0210]

[0211] Table 5: arrive mapping

[0212] Table 5

[0213]

[0214] Table 6: Elements arrive mapping

[0215] Table 6

[0216]

[0217] In one example, for a delayed report, the alphabet set includes at least one value corresponding to a value greater than the CP length.

[0218] - In one example, the alphabet set includes In Value, of which and here It is the CP length, as described in this article.

[0219] - In one example, the alphabet set includes (Normalized by CP length), where and here Corresponding to the CP length, as described in this article.

[0220] - In one example, the alphabet set includes ,in And here It is the CP length, as described in this article.

[0221] - In one example, the alphabet set includes In Values ​​(normalized by CP length), where And here Corresponding to the CP length, as described in this article.

[0222] In one example, for delayed reporting, the alphabet set includes There are 10 values, corresponding to values ​​greater than the CP length.

[0223] - In one example, the alphabet set includes In Value, of which , and here It is the CP length, as described in this article.

[0224] - In one example, the alphabet set includes In Value (CP length normalized), where And here Corresponding to the CP length, as described in this article.

[0225] - In one example, the alphabet set includes In Value, where , and here It is the CP length, as described in this article.

[0226] - In one example, the alphabet set includes In The values ​​in the value (normalized by CP length), where , and here Corresponding to the CP length, as described in this article.

[0227] In one example, for a delay report, the alphabet set includes at least one code point indicating a delay value greater than the CP length or corresponding to a value greater than the CP length. .

[0228] - In one example, as mentioned above, the alphabet set includes In Value, of which This refers to the CP length. (Code points) instruct In one example, This corresponds to an empty, invalid, or fixed value greater than x, or an out-of-range value.

[0229] - In one example, as mentioned above, the alphabet set includes (Normalized by CP length), where Corresponding to CP length. Code point instruct In one example, This corresponds to a fixed value that is empty, invalid, greater than x, or out of range.

[0230] - In one example, the alphabet set includes ,in It is the CP length, as described above. Code points instruct In one example, This corresponds to a fixed value that is empty, invalid, greater than x, or out of range.

[0231] - In one example, the alphabet set includes (Normalized by CP length) Value, of which , Corresponding to the CP length, as described above. Code point instruct In one example, This corresponds to a fixed value that is empty, invalid, greater than x, or out of range.

[0232] In one example, for delay reporting, the alphabet set includes at least one code point indicating a delay value greater than the CP length or corresponding to a value greater than the CP length. , or / and include values ​​corresponding to values ​​greater than the CP length value.

[0233] - In one example, the alphabet set includes In Value, of which It is the CP length and As mentioned above. Code points instruct In one example, This corresponds to a fixed value that is empty, invalid, greater than x, or out of range.

[0234] - In one example, the alphabet set includes (Normalized by CP length) Value, of which, With CP length and Correspondingly, as mentioned above. Code points instruct In one example, This corresponds to a fixed value that is empty, invalid, greater than x, or out of range.

[0235] - In one example, the alphabet set includes In Value, of which , It is the CP length and As mentioned above. Code points instruct In one example, This corresponds to a fixed value that is empty, invalid, greater than x, or out of range.

[0236] - In one example, the alphabet set includes (Normalized by CP length) Value, of which , Corresponding to CP length and As mentioned above. Code points instruct In one example, This corresponds to a fixed value that is empty, invalid, greater than x, or out of range.

[0237] In one example It is fixed (e.g., 1). In one example, Configured (e.g., RRC). In one example, Reported by UE.

[0238] In one example , It is fixed (for example, (It is an integer), configured (e.g., RRC), and reported by the UE.

[0239] In one example , It is fixed (for example, and (It is an integer), configured (e.g., RRC), and reported by the UE.

[0240] In one example, for frequency error reporting, the alphabet set includes values ​​greater than the frequency error ( At least one value corresponding to the value of ).

[0241] - In one example, the alphabet set includes or In Value, of which And here It is a frequency error, as described above.

[0242] - In one example, the alphabet set includes or In Value (normalized by frequency error), where , and here Corresponding to frequency error, as described above.

[0243] - In one example, the alphabet set includes In Value, of which , And here It is a frequency error, as described above.

[0244] - In one example, the alphabet set includes (Normalized by frequency error) Value, of which and here Corresponding to frequency error, as described above.

[0245] In one example, for a frequency error report, the alphabet set includes values ​​corresponding to those greater than the frequency error. value.

[0246] - In one example, the alphabet set includes In Value, of which , and here It is the CP length, as described above.

[0247] - In one example, the alphabet set includes (Normalized by frequency error) Value, of which , and here Corresponding to frequency error, as described above.

[0248] - In one example, the alphabet set includes In Value, of which , and here It is a frequency error, as described above.

[0249] - In one example, the alphabet set includes (Normalized by frequency error) The value of , where , and here Corresponding to frequency error, as described above.

[0250] In one example, for a frequency error report, the alphabet set includes at least one code point indicating a delay value greater than the frequency error or corresponding to a value greater than the frequency error. .

[0251] - In one example, the alphabet set includes In Value, of which It's a frequency error, as described above. Code point instruct In one example, This corresponds to an empty, invalid, or fixed value greater than x.

[0252] - In one example, the alphabet set includes In Value (normalized by frequency error), where Corresponding to frequency error, as described above. Code point instruct In one example, This corresponds to an empty, invalid, or fixed value greater than x.

[0253] - In one example, the alphabet set includes ,in It's a frequency error, as described above. Code point instruct In one example, This corresponds to an empty, invalid, or fixed value greater than x.

[0254] - In one example, the alphabet set includes ,in , Corresponding to frequency error, as described above. Code point instruct In one example, This corresponds to an empty, invalid, or fixed value greater than x.

[0255] In one example, for a frequency error report, the alphabet set includes at least one code point indicating a delay value greater than the frequency error or corresponding to a value greater than the frequency error. , or / and include values ​​corresponding to those greater than the frequency error value.

[0256] - In one example, the alphabet set includes In Value, of which It is frequency error and And as stated above. Code points instruct In one example, This corresponds to an empty, invalid, or fixed value greater than x.

[0257] - In one example, the alphabet set includes In Value (normalized by frequency error), where Corresponding to frequency error and As mentioned above. Code points instruct In one example, This corresponds to NULL, invalid, or a fixed value greater than x.

[0258] - In one example, the alphabet set includes ,in , It is frequency error and And as stated above. Code points instruct . In one example, this corresponds to a fixed value that is empty, invalid, or greater than x.

[0259] - In one example, the alphabet set includes In Value (normalized by frequency error), where , Corresponding to frequency error and And as stated above. Code points instruct In one example, This corresponds to an empty, invalid, or fixed value greater than x.

[0260] In one example It is fixed (e.g., 1). In one example, Configured (e.g., RRC). In one example, Reported by UE.

[0261] In one example ,and It is fixed (for example, and (It is an integer), configured (e.g., RRC), and reported by the UE.

[0262] In one example ,and It is fixed (for example, (It is an integer), configured (e.g., RRC), and reported by the UE.

[0263] In one example, the alphabet set includes code points, where the code points indicate –A FO and A FO The frequency offset (or interval) between uniformly quantized values. In one example, A FO Corresponding to Examples are shown in this disclosure.

[0264] In one example, the alphabet set includes code points, where the code points indicate 0 and A. FO The frequency offset (or interval) between uniformly quantized values. In one example, A FO Corresponding to Examples are shown in this disclosure.

[0265] In one example, CLI corresponds to... Related (or attributed to) A set or indication of the values ​​of each phase. An indicator of (quantized) values. In one example, At least one of the following examples of the alphabet set is used for quantization. In one example, the alphabet set corresponds to A set of bits of alphabet.

[0266] -In one example, These two values ​​correspond to binary phase shift keying (BPSK).

[0267] -In one example, These four values ​​correspond to QPSK

[0268] -In one example, These 8 values ​​correspond to 8PSK .

[0269] -In one example, 16 values ​​correspond to 16PSK .

[0270] -In one example, Configured via higher-level signaling, for example, from {3,4}.

[0271] In one example, the UE also reports (indicated index) with The reported related Value. In one example, the UE is configured with (indicated index) value.

[0272] In one example, in addition to phase, CLI can also include amplitude, i.e. .

[0273] For reporting / calculations, use / configure at least one of the following examples.

[0274] In one example, the report is absolute, that is... Each of the values ​​is determined / reported independently of the others.

[0275] In one example, the report is a difference (relative) relative to the base or reference. In another example, the base or reference is... The first TRP (resource). That is to say, corresponding to... The offset value relative to the corresponding The offset value is reported / determined. In one example, the reference can be fixed (e.g., 0), or configured by the UE (e.g., via a higher layer) or reported (as part of a CSI report, via part 1 or part 2 of the two-part UCI). In one example, the normalized value of the reference can also be reported by the UE.

[0276] - In one example, the difference / relative offset value was determined as UE for Report and targeting Report .

[0277] - In one example, the differential / relative offset is determined as UE (e.g., UE116) is for Report offset and targeting Report .

[0278] -In one example, or .

[0279] -In one example, or .

[0280] In one example, the report is a standalone / separate report (similar to the version 18 time-domain channel attribute, TDCP) and does not include any other parameters. This report can be reported via a Layer 1 (physical) UL channel such as PUCCH and / or PUSCH. In this case, the report can be multiplexed with other UCI parameters such as the HARQ-ACK parameter. Alternatively, the report can be reported via a Layer 2 (MAC) UL channel such as UL MAC CE. In this case, the report can be multiplexed with other MAC parameters such as the PHR parameter.

[0281] In one example, the report is a non-independent / joint report and may include other parameters such as CSI parameters (e.g., Rank Indicator (RI), Precoding Matrix Indicator (PMI), Channel Quality Indicator (CQI), CQI Reporting Interval (CRI), Layer Index (LI)) and / or beam-related parameters (e.g., Layer 1 Reference Signal Received Power (L1-RSRP), Layer 1 Signal-to-Interference-plus-Noise Ratio (L1-SINR), CRI, SSBRI). In this case, the (calibration) report is one component (or part) of a plurality of components (or parts) of the CSI / beam report.

[0282] In one example, CLI can be included as a component (part of the alphabet set) of, for example, the Type II CJT alphabet set of version 18, and the corresponding configuration can be codebookMode=mode 3 (in addition to modes 1 and 2 in version 18).

[0283] In one example, the metric for obtaining / deriving / acquiring CLI is based on the auto( / cross)correlation and / or power spectrum or power spectral density of the measurement.

[0284] In one example, the measurement and reporting of TF offsets are decoupled / separated, meaning that one of two separate mechanisms can be configured / used.

[0285] -For time offset ( The measurement corresponds to multiple time points (bursts), where two consecutive time points can be determined by... Separated by a symbol or time slot.

[0286] -For frequency offset ( ), measuring bursts corresponding to multiple frequency timings, where two consecutive frequency timings can be determined by Each subcarrier or PRB or subband (SB) is separated.

[0287] In one example, the measurement and reporting of TF offsets are coupled / joint, i.e., a joint mechanism is used / configured for... 2D measurement and reporting.

[0288] For reporting / calculating the frequency domain granularity of the offset value, use / configure at least one of the following examples.

[0289] - In one example, the offset value is reported / calculated in a wideband (WB) manner, that is, the offset value is reported publicly for the entire CSI reporting band.

[0290] - In one example, the offset value is reported / calculated in a sub-band (SB) manner, that is, the offset value is reported for each SB in the CSI reporting band. Alternatively, a reference (WB) offset can also be reported, such that the sub-band offset level = sub-band offset index - wideband offset index.

[0291] Similarly, for the time-domain granularity of offset value reporting / calculation, use / configure at least one of the following examples.

[0292] - In one example, the offset value is reported / calculated in a wide-time (WT) manner, that is, the offset value is reported publicly for the entire time window or duration (where the reporting is expected to be valid).

[0293] - In one example, offset reporting / calculation is performed in a sub-time (ST) manner, meaning that the offset value is reported for each ST within a duration (where reporting is expected to be valid). Additionally, a reference (WT) offset can be reported, such that ST offset level = ST offset index - WT offset index.

[0294] In one example, the report includes a value for each TRP (including the reference value). Values ​​or Exclusion References Value). For time / delay offset ( Delay value Sort in ascending order)

[0295] - In one example, one value corresponds to the first delay. .

[0296] - In one example, the value corresponds to the final delay. .

[0297] - In one example, the value corresponds to the maximum value. .

[0298] - In one example, the value corresponds to delay spread. .

[0299] Similarly, for frequency offset ( Sort in ascending order)

[0300] - In one example, the value corresponds to a first frequency. .

[0301] - In one example, the value corresponds to the last frequency. .

[0302] - In one example, the value corresponds to the maximum value. .

[0303] - In one example, the value corresponds to frequency spread. .

[0304] In one example, the report includes two values ​​for each TRP. For the time / delay offset ( Delay value Sort in ascending order).

[0305] - In one example, these two values ​​could correspond to the first and last values. and .

[0306] - In one example, these two values ​​could correspond to the maximum and minimum values. .

[0307] - In one example, these two values ​​could correspond to two maximum values. .

[0308] Similarly, for frequency offset ( value Sort in ascending order).

[0309] - In one example, these two values ​​could correspond to the first and last values. and .

[0310] - In one example, these two values ​​could correspond to maximum and minimum values .

[0311] - In one example, these two values ​​could correspond to The two maximum values .

[0312] In one example, the report includes two values ​​for each TRP.

[0313] In one example, the report includes Two values ​​for each TRP (excluding the reference TRP).

[0314] In one example, the report includes a value used to reference the TRP. The two values ​​used for the remaining TRP, i.e., the two values ​​used for the reference, are 0 and 0. 1.

[0315] In one example, the report further includes recommendations regarding coherence across TRPs (CJT or NCJT). In one example, this can be implicitly represented by a value, or explicitly represented by an indicator (e.g., 1 bit), or via... Bit or The bitmap indicator is used to explicitly represent the bitmap, where it represents NCJT when the bitmap is "0" or "1", and CJT when there are at least two "1"s or "0".

[0316] In one embodiment, the CLI report (described in the example of Embodiment I) is based on at least one of the following examples.

[0317] In one example, the CLI report includes a CRI (or DL ​​RS indicator or indicator) to indicate the CSI-RS resource. or One reference CSI-RS resource. The payload of the indicator is or Bit.

[0318] In one example, the CLI report includes a 2-bit indicator (in bits) to indicate... Or the reference CSI-RS resource among N CSI-RS resources, regardless of Or N.

[0319] In one example, the CLI report does not include any CRI information.

[0320] In one example, the reference CSI-RS resource can be configured by the NW via higher-level signaling (i.e., RRC).

[0321] In one example, the referenced CSI-RS resource is fixed, for example, the lowest (or highest) index of the CSI-RS resource.

[0322] In one example, no instruction / report / specification / use of reference CSI-RS resources is given.

[0323] In one example, the CLI report includes Bit map indicator (or (Bitmap indicator) to indicate one or more CSI-RS resources.

[0324] In one example, the CLI report includes an M-bit bitmap indicator to indicate one or more CSI-RS resources, regardless of... or How about the CSI-RS resources?

[0325] In one embodiment, for a (inter-TRP) delay report (the CLI report described in the example of Embodiment I), the alphabet set used to quantify the delay value is based on at least one of the following examples.

[0326] In one example, the alphabet set contains 0 values ​​or code points mapped to 0 values.

[0327] In one example, the alphabet set does not contain 0 values ​​or code points mapped to 0 values.

[0328] In one example, the alphabet set includes a range in units of CP length. of Values ​​or code points, where It can be fixed, for example ,or, or Alternatively, it can be configured by the NW via higher-layer signaling (i.e., RRC), or it can be determined by the UE, and where It is a range (e.g., The maximum value of ), and it can be fixed, configured by NW, or determined by UE.

[0329] In one example It is fixed. In another example, It can be configured by NW. In another example, It can be determined by the UE and reported as part of the report.

[0330] In one example The value (or code point) is in units of CP length. The value in.

[0331] In one example The value (or code point) is in units of CP length. The value in.

[0332] In one example Values ​​(or code points) include 0.

[0333] In one example Values ​​(or code points) include reserved values, such as null, out of range, etc.

[0334] In one example, the alphabet set includes (absolute) time units. Scope Values ​​or code points, where It can be fixed, for example Alternatively, it can be configured by the NW via higher-layer signaling (i.e., RRC), or it can be determined by the UE, and where It is the maximum value of the range (for example, (This can be fixed, configured by the NW, or determined by the UE.)

[0335] In one example It is fixed. In another example, It can be configured by NW. In another example, It can be determined by the UE and reported as part of the report.

[0336] In one example Values ​​(or code points) are measured in (absolute) units of time. The value in.

[0337] In one example Values ​​(or code points) are measured in (absolute) units of time. The value in.

[0338] In one example Values ​​(or code points) include 0.

[0339] In one example Values ​​(or code points) include reserved values, such as null, out of range, etc.

[0340] In one embodiment, for a delayed report (the CLI report described in the example of Embodiment I), for (or Each of the CSI-RS resources, or (or One or more latency values ​​for each of the CSI-RS resources are reported as part of the CLI report.

[0341] In one example, at least one scheme described in one or more embodiments herein is used to quantify each CSI-RS resource. delay value Each of the taps. In one example, in It is either fixed or configured by the NW, or determined by the UE and reported as part of the report. In one example, the value of the CSI-RS resource... They are the same. In another example, The values ​​can vary across CSI-RS resources. In one example, each delay value is calculated relative to a reference delay value (e.g., the minimum delay across CSI-RS resources) or relative to a reference TRP (CSI-RS resource). In another example, each value is calculated without a relative reference delay value. In one example, the reference delay value is reported. In another example, no reference delay value is reported.

[0342] In one example, at least one scheme described in one or more embodiments herein is used to quantify each CSI-RS resource other than the reference TRP (e.g., indicated by CRI or NW). Each delay value (Tap). In one example, each delay value is calculated relative to a reference delay value (e.g., the minimum delay across CSI-RS resources) or relative to a reference TRP. In another example, each value is calculated without a relative reference delay value. In one example, the reference delay value is reported. In one example, no reference delay value is reported.

[0343] In one example, at least one scheme described in one or more embodiments herein is used to quantify each CSI-RS resource that is only slightly longer than (or approximately) the CP length. delay value Each of the taps. In one example, each delay value is calculated relative to a reference delay value (e.g., the minimum delay across CSI-RS resources) or relative to a reference TRP. In another example, each value is calculated without a relative reference delay value. In one example, the reference delay value is reported. In one example, no reference delay value is reported.

[0344] In one example, at least one scheme described in one or more embodiments herein is used to quantify each CSI-RS resource that is only longer than (or approximately) the CP length, excluding the reference TRP (e.g., indicated by CRI or NW). delay value Each of the taps. In one example, each delay value is calculated relative to a reference delay value (e.g., the minimum delay across CSI-RS resources) or relative to a reference TRP. In another example, each value is calculated without a relative reference delay value. In one example, the reference delay value is reported. In one example, no reference delay value is reported.

[0345] In one example, at least one scheme described in one or more embodiments herein is used to quantify each CSI-RS resource associated with the first and last delay taps (e.g., to indicate delay spread). Each of the two delay values ​​(tap) is used. In one example, each delay value is calculated relative to a reference delay value (e.g., the minimum delay across a CSI-RS resource) or relative to a reference TRP. In another example, each value is calculated without a relative reference delay value. In one example, the reference delay value is reported. In one example, no reference delay value is reported.

[0346] In one example, each CSI-RS resource associated with the first and last delay taps (e.g., to indicate delay extension) is in addition to the reference TRP (e.g., indicated by CRI or NW). Each of the two delay values ​​(tap) is quantified using at least one of the schemes described in one or more embodiments herein. In one example, each delay value is calculated relative to a reference delay value (e.g., the minimum delay across a CSI-RS resource) or relative to a reference TRP. In another example, each value is calculated without a relative reference delay value. In one example, the reference delay value is reported. In one example, no reference delay value is reported.

[0347] In one example CSI-RS resources Each CSI-RS resource in the CSI-RS resources delay value Each of the taps is quantized using at least one scheme described in one or more embodiments herein, wherein Is it a fixed value, or a fixed function? (For example, It is a ceiling operation, meaning greater than or equal to. The delay value is either the smallest integer (or configured by the NW via higher-level signaling (i.e., RRC) or signaled via MAC-CE. In one example, each delay value is calculated relative to a reference delay value (e.g., the minimum delay across CSI-RS resources) or relative to a reference TRP. In another example, each value is calculated without a relative reference delay value. In one example, the reference delay value is reported. In one example, no reference delay value is reported.

[0348] In one example, besides referencing the TRP (e.g., indicated by the CRI or NW), CSI-RS resources Each CSI-RS resource delay value Each of the taps is quantized using at least one of the schemes described in one or more embodiments herein, wherein Is it a fixed value or Fixed functions (e.g., It is the floor function, that is, greater than or equal to. The delay value is either the smallest integer (the delay value), configured by the NW via higher-level signaling (i.e., RRC), or signaled via MAC-CE. In one example, each delay value is calculated relative to a reference delay value (e.g., the minimum delay across CSI-RS resources) or relative to a reference TRP. In another example, each value is calculated without a relative reference delay value. In one example, the reference delay value is reported. In one example, no reference delay value is reported.

[0349] In one embodiment, according to one or more embodiments herein or one of the examples described herein, the UE can be configured with One CSI-RS resource (DL RS resource). The UE can be configured according to at least one of the following examples.

[0350] In one example, the UE can be configured to receive CLI (CSI) requests to report with The CLI associated with each CSI-RS resource or In addition to CSI-RS resources One CLI. In one example, it can be done via higher-level signaling (RRC) or MAC-CE. Each CSI-RS resource is dynamically signaled along with CSI / CLI requests.

[0351] In one example, the UE can be configured to receive CLI (CSI) requests to report only to... CLI associated with a subset of CSI-RS resources, for example, via Bitmap. In one example, it can be dynamically signaled along with CSI / CLI requests. Bitmap. In one example, the bitmap can be configured via higher-level signaling (RRC) or via MAC-CE.

[0352] In one example, the UE can be configured to receive CLI (CSI) requests to report latency values. (or The associated CLI (according to one or more embodiments described herein). In one example, these can be communicated via higher-level signaling (RRC) or MAC-CE. The value is dynamically signaled along with the CSI / CLI request.

[0353] In one embodiment, for CLI reporting, the UE can be configured via higher-layer signaling (e.g., RRC) to... One NZP CSI-RS resource / resource set, of which The UE reports CLI according to at least one of the following embodiments / examples.

[0354] In one embodiment, the UE is configured Report on each NZP CSI-RS resource / resource set.

[0355] In one example, one (or more) reference CSI-RS resources (or a set of CSI-RS resources) It is fixed or implicitly known, for example, the lowest or highest index of the configured CSI-RS resource (or the configured CSI-RS resource set).

[0356] In one example, one (or more) reference CSI-RS resources (or a set of CSI-RS resources) Configured by NW via RRC, MAC-CE, or DCI (dynamically).

[0357] -In one example, Bit indicators are used to configure reference CSI-RS resources.

[0358] -In one example, - The bit indicator is used to configure reference CSI-RS resources, regardless of .

[0359] -In one example, - The bitmap indicator is used to configure one or more reference CSI-RS resources.

[0360] -In one example, - The bitmap indicator is used to configure one or more reference CSI-RS resources, regardless of .

[0361] In one example, one (or more) reference CSI-RS resources (or a set of CSI-RS resources) Determined by the UE and included in the CSI report.

[0362] -In one example, Bit indicators are used to indicate referenced CSI-RS resources and are included in the CSI report (e.g., part 1 or part 2 of a two-part CSI, or in a single-part CSI).

[0363] - In one example, a 2-bit indicator is used to indicate a reference CSI-RS resource and that it is included in the CSI report (e.g., part 1 or part 2 of a two-part CSI, or in a single-part CSI).

[0364] -In one example, - The bitmap indicator is used to indicate one or more reference CSI-RS resources and to be included in a CSI report (e.g., part 1 or part 2 of a two-part CSI, or in a single-part CSI).

[0365] -In one example, - The bitmap indicator is used to indicate one or more reference CSI-RS resources and to be included in a CSI report (e.g., part 1 or part 2 of a two-part CSI, or in a single-part CSI).

[0366] In one embodiment, the UE report CSI-RS resources / resource sets One, of which The selection of a resource / resource set is dynamically signaled to the UE by the NW. In one example, using - Use bitmap to send signal notifications CSI-RS resources / resource sets One. In one example, using Bitmap to send signal notification CSI-RS resources / resource sets One (excluding reference CSI-RS resources / resource sets). In another example, using with Using a combination of size indicators to send signals CSI-RS resources / resource sets One. In another example, having Size combination indicators are used to send signals. CSI-RS resources / resource sets (excluding reference CSI-RS resources / resource sets).

[0367] In one example, one (or more) reference CSI-RS resources (or a set of CSI-RS resources) It is fixed or implicitly known, for example, configured. In CSI-RS resources The lowest or highest index (or the configured CSI-RS resource set).

[0368] In one example, one (or more) reference CSI-RS resources (or a set of CSI-RS resources) Configured by NW via RRC, MAC-CE, or DCI (dynamically).

[0369] -In one example, Bit indicators are used to configure reference CSI-RS resources.

[0370] -In one example, - The bit indicator is used to configure reference CSI-RS resources, regardless of .

[0371] -In one example, - The bitmap indicator is used to configure one or more reference CSI-RS resources.

[0372] -In one example, - The bitmap indicator is used to configure one or more reference CSI-RS resources, regardless of .

[0373] -In one example, Bit indicators are used to configure reference CSI-RS resources.

[0374] -In one example, - The bit indicator is used to configure reference CSI-RS resources, regardless of .

[0375] -In one example, - The bitmap indicator is used to configure one or more reference CSI-RS resources.

[0376] -In one example, - The bitmap indicator is used to configure one or more reference CSI-RS resources, regardless of .

[0377] In one example, one (or more) reference CSI-RS resources (or a set of CSI-RS resources) Determined by the UE and included in the CSI report.

[0378] -In one example, Bit indicators are used to indicate referenced CSI-RS resources and are included in the CSI report (e.g., part 1 or part 2 of a two-part CSI, or in a single-part CSI).

[0379] - In one example, a 2-bit indicator is used to indicate the reference CSI-RS resource, regardless of And included in the CSI report (e.g., part 1 or part 2 of a two-part CSI, or in a single-part CSI).

[0380] -In one example, - The bitmap indicator is used to indicate one or more reference CSI-RS resources and to be included in a CSI report (e.g., part 1 or part 2 of a two-part CSI, or in a single-part CSI).

[0381] -In one example, - The bitmap indicator is used to indicate one or more reference CSI-RS resources, regardless of And included in the CSI report (e.g., part 1 or part 2 of a two-part CSI, or in a single-part CSI).

[0382] -In one example, Bit indicators are used to indicate referenced CSI-RS resources and are included in the CSI report (e.g., part 1 or part 2 of a two-part CSI, or in a single-part CSI).

[0383] - In one example, a 2-bit indicator is used to indicate the reference CSI-RS resource, regardless of And it is included in the CSI report (e.g., part 1 or part 2 of a two-part CSI, or in a single-part CSI).

[0384] -In one example, - The bitmap indicator is used to indicate one or more reference CSI-RS resources and to be included in a CSI report (e.g., part 1 or part 2 of a two-part CSI, or in a single-part CSI).

[0385] -In one example, - The bitmap indicator is used to indicate one or more reference CSI-RS resources, regardless of And it is included in the CSI report (e.g., part 1 or part 2 of a two-part CSI, or in a single-part CSI).

[0386] In one embodiment, the UE report NZP CSI-RS resources / resource sets One, of which The selection of a resource / resource set is performed by the UE and included in the CSI report. In one example... - Bitmap indicator can be used to indicate the selected bitmap. One NZP CSI-RS resource / resource set. In another example, it has a size. The combination indicator is used to indicate the selected One NZP CSI-RS resource / resource set. In another example, it can be used. - Bitmap indicator to indicate the selected One NZP CSI-RS resource / resource set (excluding reference CSI-RS resources / resource sets). In another example, in this disclosure, there is... Size combination indicators are used to indicate the selected One NZP CSI-RS resource / resource set (excluding reference CSI-RS resources / resource sets), of which in this disclosure In one example, regardless How to use 2-bit indicators. In another example, regardless... How to use 4-bit bitmap indicators.

[0387] In one example, one (or more) reference CSI-RS resources (or a set of CSI-RS resources) It is fixed or implicitly known, for example, the chosen one. One or the configured The lowest or highest index of a CSI-RS resource (or a configured set of CSI-RS resources).

[0388] In one example, one (or more) reference CSI-RS resources (or a set of CSI-RS resources) Configured by NW via RRC, MAC-CE, or DCI (dynamically).

[0389] -In one example, Bit indicators are used to configure reference CSI-RS resources.

[0390] -In one example, - The bit indicator is used to configure reference CSI-RS resources, regardless of .

[0391] -In one example, - The bitmap indicator is used to configure one or more reference CSI-RS resources.

[0392] -In one example, - The bitmap indicator is used to configure one or more reference CSI-RS resources, regardless of .

[0393] In one example, one (or more) reference CSI-RS resources (or a set of CSI-RS resources) It is determined by the UE (e.g., UE 116) and included in the CSI report.

[0394] In one example, the selection of N CSI-RS resources / resource sets and the selection of reference resources. Indications are made via individual indicators or combined indicators, and the indicators are included in a portion of the CSI (UCI).

[0395] - In one example, for the selection of N CSI-RS resources The bitmap indicator is used to indicate N CSI-RS resources / resource sets.

[0396] In one example Bit indicators are used to indicate reference resources. .

[0397] In one example Bit indicators are used to indicate reference resources. Regardless of or .

[0398] In one example Bit indicators are used to indicate reference resources. .

[0399] In one example Bitmap indicators are used to indicate one or more reference resources. .

[0400] In one example Bitmap indicators are used to indicate one or more reference resources. .

[0401] In one example Bitmap indicators are used to indicate one or more reference resources. Regardless of or .

[0402] - In one example, for the selection of N CSI-RS resources Bitmap indicators are used to indicate N-1 CSI-RS resources / resource sets (excluding reference resources). ).

[0403] In one example Bit indicators are used to indicate reference resources. .

[0404] In one example Bit indicators are used to indicate reference resources. Regardless of or .

[0405] In one example Bit indicators are used to indicate reference resources. .

[0406] In one example Bitmap indicators are used to indicate one or more reference resources. .

[0407] In one example Bitmap indicators are used to indicate one or more reference resources. .

[0408] In one example Bitmap indicators are used to indicate one or more reference resources. Regardless of or .

[0409] - In one example, for the selection of N CSI-RS resources The bitmap indicator is used to indicate N CSI-RS resources / resource sets, regardless of... .

[0410] In one example Bit indicators are used to indicate reference resources. .

[0411] In one example Bit indicators are used to indicate reference resources. Regardless of or .

[0412] In one example Bit indicators are used to indicate reference resources. .

[0413] In one example Bitmap indicators are used to indicate one or more reference resources. .

[0414] In one example Bitmap indicators are used to indicate one or more reference resources. .

[0415] In one example Bitmap indicators are used to indicate one or more reference resources. Regardless of or .

[0416] - In one example, for the selection of N CSI-RS resources The bitmap indicator is used to indicate N-1 CSI-RS resources / resource sets, regardless of... (excluding reference resources) ).

[0417] In one example Bit indicators are used to indicate reference resources. .

[0418] In one example Bit indicators are used to indicate reference resources. Regardless of or .

[0419] In one example Bit indicators are used to indicate reference resources. .

[0420] In one example Bitmap indicators are used to indicate one or more reference resources. .

[0421] In one example Bitmap indicators are used to indicate one or more reference resources. .

[0422] In one example Bitmap indicators are used to indicate one or more reference resources. Regardless of or .

[0423] - In one example, for the selection of N CSI-RS resources Bit combination indicators are used to indicate N CSI-RS resources / resource sets.

[0424] In one example Bit indicators are used to indicate reference resources. .

[0425] In one example Bit indicators are used to indicate reference resources. Regardless of or .

[0426] In one example Bit indicators are used to indicate reference resources. .

[0427] In one example Bitmap indicators are used to indicate one or more reference resources. .

[0428] In one example Bitmap indicators are used to indicate one or more reference resources. .

[0429] In one example Bitmap indicators are used to indicate one or more reference resources. Regardless of or .

[0430] - In one example, for the selection of N CSI-RS resources Bit combination indicators are used to indicate N-1 CSI-RS resources / resource sets (excluding reference resources). ).

[0431] In one example Bit indicators are used to indicate reference resources. .

[0432] In a demonstration In the example, the bit indicator is used to indicate the reference resource. Regardless of or .

[0433] In one example Bit indicators are used to indicate reference resources. .

[0434] In one example Bitmap indicators are used to indicate one or more reference resources. .

[0435] In one example Bitmap indicators are used to indicate one or more reference resources. .

[0436] In one example Bitmap indicators are used to indicate one or more reference resources. Regardless of or .

[0437] - In one example, for the selection of N CSI-RS resources Bit combination indicators are used to indicate a CSI-RS resource / resource set, regardless of .

[0438] In one example Bit indicators are used to indicate reference resources. .

[0439] In one example Bit indicators are used to indicate reference resources. Regardless of or .

[0440] In one example Bit indicators are used to indicate reference resources. .

[0441] In one example Bitmap indicators are used to indicate one or more reference resources. .

[0442] In one example Bitmap indicators are used to indicate one or more reference resources. .

[0443] In one example Bitmap indicators are used to indicate one or more reference resources. Regardless of or .

[0444] In one example, the selection and reference of N CSI-RS resources / resource sets. The selection is indicated by a separate indicator or a combined indicator, and the indicator is included in either CSI Part 1 or CSI Part 2 of the two-part CSI (UCI).

[0445] - In one example, for the selection of N CSI-RS resources The bitmap indicator is used to indicate N CSI-RS resources / resource sets and is included in CSI Part 1.

[0446] - In one example, for the selection of N CSI-RS resources The bitmap indicator is used to indicate N CSI-RS resources / resource sets and is included in CSI Part 2.

[0447] - In one example, for the selection of N CSI-RS resources Bitmap indicators are used to indicate N-1 CSI-RS resources / resource sets (excluding reference resources). And it is included in CSI Part 1.

[0448] - In one example, for the selection of N CSI-RS resources Bitmap indicators are used to indicate N-1 CSI-RS resources / resource sets (excluding reference resources). And it is included in CSI Part 2.

[0449] - In one example, for the selection of N CSI-RS resources The bitmap indicator is used to indicate N CSI-RS resources / resource sets, regardless of... And it is included in CSI Part 1.

[0450] - In one example, for the selection of N CSI-RS resources The bitmap indicator is used to indicate N CSI-RS resources / resource sets, regardless of... And it is included in CSI Part 2.

[0451] - In one example, for the selection of N CSI-RS resources The bitmap indicator is used to indicate N-1 CSI-RS resources / resource sets, regardless of... (excluding reference resources) ), and is included in CSI Part 1.

[0452] - In one example, for the selection of N CSI-RS resources The bitmap indicator is used to indicate N-1 CSI-RS resources / resource sets, regardless of... (excluding reference resources) ), and is included in CSI Part 2.

[0453] - In one example, for the selection of N CSI-RS resources Bit combination indicators are used to indicate N CSI-RS resources / resource sets and are included in CSI Part 1.

[0454] - In one example, for the selection of N CSI-RS resources Bit combination indicators are used to indicate N CSI-RS resources / resource sets and are included in CSI Part 2.

[0455] - In one example, for the selection of N CSI-RS resources Bit combination indicators are used to indicate N-1 CSI-RS resources / resource sets (excluding reference resources). ), and is included in CSI Part 1.

[0456] - In one example, for the selection of N CSI-RS resources Bit combination indicators are used to indicate N-1 CSI-RS resources / resource sets (excluding reference resources). ), and is included in CSI Part 2.

[0457] - In one example, for the selection of N CSI-RS resources Bit combination indicators are used to indicate N CSI-RS resources / resource sets, regardless of And it is included in CSI Part 1.

[0458] - In one example, for the selection of N CSI-RS resources Bit combination indicators are used to indicate N CSI-RS resources / resource sets, regardless of And it is included in CSI Part 2.

[0459] -In one example, - Bit indicators are used to indicate reference resources And it is included in CSI Part 1.

[0460] -In one example, - Bit indicators are used to indicate reference resources And it is included in CSI Part 2.

[0461] -In one example, - Bit indicators are used to indicate reference resources, regardless of or It is included in CSI Part 1.

[0462] -In one example, - Bit indicators are used to indicate reference resources Regardless of or And it is included in CSI Part 2.

[0463] -In one example, - Bit indicators are used to indicate reference resources And it is included in CSI Part 1.

[0464] -In one example, - Bit indicators are used to indicate reference resources And it is included in CSI Part 2.

[0465] -In one example, - The bitmap indicator is used to indicate one or more reference resources. And it is included in CSI Part 1.

[0466] -In one example, - The bitmap indicator is used to indicate one or more reference resources. And it is included in CSI Part 2.

[0467] -In one example, - The bitmap indicator is used to indicate one or more reference resources. And it is included in CSI Part 1.

[0468] -In one example, - The bitmap indicator is used to indicate one or more reference resources. And it is included in CSI Part 2.

[0469] -In one example, - The bitmap indicator is used to indicate one or more reference resources. Regardless of or And it is included in CSI Part 1.

[0470] -In one example, - The bitmap indicator is used to indicate one or more reference resources. Regardless of or And it is included in CSI Part 2.

[0471] - Any combination of the above examples can be another example / implementation.

[0472] In one embodiment, the UE can be configured with a range value for CJT frequency reports (delay reports, phase offset reports, or other combined reports). and / or quantization of state quantity (or the number of bits in the quantized state) (in Here, the CJT frequency reporting can be a frequency reporting scheme designed based on the examples described in one or more embodiments herein. In one example, M (or B) can be designed as at least one of the following examples.

[0473] In one example It can be configured by NW via RRC signaling (or MAC-CE or DCI).

[0474] In one example (or B) can be configured by NW via RRC signaling (or MAC-CE or DCI).

[0475] In one example and (Or B) can be indicated / configured separately with individual parameters.

[0476] In one example and (Or B) can be indicated / configured together using separate parameters.

[0477] In one example The number of support values ​​is In one example, In one example, In one example, In one example, In one example, In one example, In one example, .

[0478] In one example The number of support values ​​for (or B) is In one example, In one example, In one example, In one example, In one example, In one example, .

[0479] In one example, ( )or( The number of support values ​​is In one example, In one example, In one example, In one example, In one example, In one example, .

[0480] In one example One of the configurable values ​​corresponds to 0.1 ppm (or 100 ppb).

[0481] In one example One of the configurable values ​​corresponds to a value less than 0.1 ppm.

[0482] In one example This corresponds to c × 0.1 ppm, where c < 1, for example, c = 0.5 or 0.1 or 0.05 or 0.01.

[0483] In one example One of the configurable values ​​corresponds to a value greater than 0.1 ppm. In one example, This corresponds to c×CP, where c>1, for example, c=2 or 5.

[0484] In one example One of the configurable values ​​for (or B) corresponds to 32 (i.e., B = bits).

[0485] In one example One of the configurable values ​​for (or B) corresponds to a value less than 32.

[0486] In one example, M corresponds to 16, 8, 4, or 2.

[0487] In one example One of the configurable values ​​for (or B) corresponds to a value greater than 32.

[0488] In one example, M corresponds to 64, 128, or 256.

[0489] In one example, ( )(or One of the configurable values ​​for )) corresponds to (0.1 ppm, 16).

[0490] In one example, ( )(or( One of the configurable values ​​for )) corresponds to (0.1 ppm, X), where X corresponds to a value less than 16.

[0491] In one example, ( )(or( One of the configurable values ​​for )) corresponds to (0.1 ppm, X), where X corresponds to a value greater than 16.

[0492] In one example, ( )(or( One of the configurable values ​​for )) corresponds to (c × 0.1 ppm, 16), where c < 1, for example, c = 0.5 or 0.1 or 0.05 or 0.01.

[0493] In one example, ( )(or( One of the configurable values ​​for )) corresponds to (c × 0.1 ppm, X), where c < 1, for example, c = 0.5 or 0.1 or 0.05 or 0.01, and X corresponds to a value greater than 16.

[0494] In one example, ( )(or( One of the configurable values ​​for )) corresponds to (c × 0.1 ppm, X), where c < 1, for example, c = 0.5 or 0.1 or 0.05 or 0.01, and X corresponds to a value less than 16.

[0495] In one example, ( )(or( One of the configurable values ​​for )) corresponds to (c × 0.1 ppm, 16), where c > 1, for example, c = 2 or 5.

[0496] In one example, ( )(or( One of the configurable values ​​for )) corresponds to (c × 0.1 ppm, X), where c > 1, for example, c = 2 or 5. And X corresponds to a value greater than 16.

[0497] In one example, ( )(or( One of the configurable values ​​for )) corresponds to (c × 0.1 ppm, X), where c > 1, for example, c = 2 or 5, and X corresponds to a value less than 16.

[0498] In one example One of the configurable values ​​corresponds to a function of 0.1ppm, or 0.01ppm, or ppb level, or 0.05ppm, 1ppb, 5ppb, or 10ppb.

[0499] In one example, each example shown above, which replaces 0.1ppm with a function of the PMI subband size, could be another example.

[0500] In one example One of the configurable values ​​corresponds to a function (periodicity) of the reference signal interval in the time domain.

[0501] In one example, each example shown above is replaced with 0.1 ppm as a function of the reference signal interval (periodicity) in the time domain.

[0502] In one example, the value of a multiple of the step size can be used to determine... The step size can be determined by the configured time interval (in the associated CSI-RS resource / resource set measurement), and the multiplier can be determined by... Give (i.e., -1).

[0503] In one example The range of values ​​can be implicitly configured by NW via RS configuration for measurement, and the number of quantized states can be determined. (or the number of bits in the quantized state) (in )) is only configured.

[0504] In one example, If the value exceeds the measurable frequency value from the associated CSI-RS resource / resource set, it is not expected that the UE will be configured with [specific configuration]. Measurable frequency values ​​can be determined by RS time density (e.g., the time interval between two CSI-RS resources).

[0505] In an embodiment, the UE (e.g., UE 116) may be configured with measurement and reporting capabilities, including measurements and reports for... TRP or AG or CSI-RS resource or CLI and L1-RSRP of CSI-RS resource set. Reporting and / or measurement are performed at least according to the following embodiments.

[0506] In one example, for reporting, CLI and L1-RSRP are associated with the same CSI-RS (Measurement / Setup) configuration. In another example, CLI and L1-RSRP are associated with their respective CSI-RS (Measurement / Setup) configurations.

[0507] In one example, CLI is associated with a delayed offset report; for instance, the reportQuantity of the CSI report configuration is set to "cjtc-Dd".

[0508] In one example, CLI is associated with frequency offset reporting; for instance, the reportQuantity configuration for CSI reports is set to "cjtc-F".

[0509] In one example, CLI is associated with latency and frequency offset reports; for instance, the reportQuantity of the CSI report configuration is set to "cjtc-Dd-F".

[0510] In one example, CLI is associated with a phase offset report; for instance, the reportQuantity of the CSI report configuration is set to "cjtc-P".

[0511] In one example, similar to typical L1-RSRP reporting, the maximum RSRP is reported via a 7-bit indicator with a 7-bit value in the range [-140, -44] dBm, in 1 dB increments, and reported via a 4-bit indicator with a 4-bit value. ) L1-RSRP differences. The L1-RSRP differences are calculated in 2 dB steps relative to the maximum RSRP value.

[0512] In one example, the reference CSI-RS resource (or set, AG, or TRP) n_ref associated with the maximum RSRP is obtained through having A bit size indicator is used to indicate this.

[0513] In one example, the reference CSI-RS resource indicator is considered the same as the reference CSI-RS resource indicator used to indicate the reference CSI-RS resource (or set) associated with a CLI report. In this case, for reports that include both CLI and L1-RSRP, only one CSI-RS resource indicator is reported.

[0514] In another example, a reference CSI-RS resource indicator associated with RSRP and another reference CSI-RS resource (or set) associated with CLI are included in the CSI report.

[0515] In one example, reports including CLI and L1-RSRP are associated with new reporting quantities, such as reportQuantity='L1-RSRP-cjtc-Dd', reportQuantity='L1-RSRP-cjtc-F', reportQuantity='L1-RSRP-cjtc-Dd-F', reportQuantity='L1-RSRP-cjtc-P', reportQuantity='cjtc-Dd-L1-RSRP', reportQuantity='cjtc-F-L1-RSRP', reportQuantity='cjtc-Dd-F-L1-RSRP', reportQuantity='cjtc-P-L1-RSRP', reportQuantity='cjtc-L1-RSRP', reportQuantity='L1-RSRP-cjtc'.

[0516] In one example, joint reporting of CLI and L1-RSRP can be accomplished via joint triggering or requesting via DCI, MAC-CE, or RRC.

[0517] Figure 12 An example method 1200 performed by a UE in a wireless communication system according to an embodiment of the present disclosure is shown. Figure 12 Method 1200 can be derived from Figure 1 Any of UE 111-116 (such as Figure 3 The UE 116) is executed, and the corresponding method can be performed by Figure 1 Any of BS 101-103 (such as Figure 2The method is performed using BS 102. Method 1200 is for illustrative purposes only, and other embodiments may be used without departing from the scope of this disclosure.

[0518] Method 1200 begins with UE receiving indication N TRP Information regarding antenna groups and the amount of reporting in CSI reports (1210). For example, in 1210, the reporting amount corresponds to DO or FO, and Each antenna group in the antenna group corresponds to a corresponding CSI-RS resource set or a corresponding CSI-RS resource. The UE then determines a reference antenna group (1220) based on this information. For example, in 1220, the reference antenna group consists of antennas with a payload size of... The reference indicator is used to indicate the bit.

[0519] Then, based on this information and the reference antenna group, the UE determines N other than the reference antenna group. TRP CLI (1230) for each antenna group. Then, the UE sends a CSI report (1240) including a CLI indicator. For example, in 1240, the CLI indicator indicates the reference antenna group and the CLI.

[0520] In various embodiments, when the reporting quantity corresponds to FO, The CLI for each antenna group in the antenna group includes an FO value. The FO value is indicated by a B-bit indicator and corresponds to... The value of the code point in the alphabetical set. The code point value corresponds to middle One equidistant value and one "invalid" code point. For example, The value is configured through the first Radio Resource Control (RRC) parameter. The value is configured through the second RRC parameter, where It includes the first episode, which is 32. This is the second episode, which includes 0.1 ppm.

[0521] In various embodiments, when the reporting quantity corresponds to DO, The CLI for each antenna group includes two DO values. At least one of the two DO values ​​is indicated by a B-bit indicator and corresponds to... The value in the alphabetic set of code point values. The code point value corresponds to In Equal spacing range and 'out-of-range' code points, among which For example, the value of M is configured via the first RRC parameter. The value is configured through the second RRC parameter, where It is a set including a cyclic prefix (CP) length of 1.

[0522] Any of the above-described variant embodiments can be used independently or in combination with at least one other variant embodiment. The flowcharts above illustrate example methods that can be implemented according to the principles of this disclosure, and various changes can be made to the methods shown in the flowcharts herein. For example, although shown as a series of steps, the individual steps in each figure 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.

[0523] Although this disclosure has been described using exemplary 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. Nothing described in this application should be construed as implying that any particular element, step, or function is an essential element that must be included within the scope of the claims. The scope of the patent subject matter is defined by the claims.

[0524] Figure 13 A block diagram of a terminal (or user equipment (UE)) according to an embodiment of the present disclosure is shown. Figure 13 Corresponding to Figure 3 Example of a UE.

[0525] like Figure 13 As shown, the UE according to the embodiment may include a transceiver 1310, a memory 1320, and a processor 1330. The transceiver 1310, memory 1320, and processor 1330 of the UE can operate according to the communication method of the UE described above. However, the components of the UE are not limited thereto. For example, the UE may include more or fewer components than those described above. In addition, the processor 1330, transceiver 1310, and memory 1320 may be implemented as a single chip. Furthermore, the processor 1330 may include at least one processor.

[0526] Transceiver 1310 is collectively referred to as a UE receiver and a UE transmitter, and can transmit signals to or receive signals from a base station or network entity. Signals transmitted to or received from a base station or network entity may include control information and data. Transceiver 1310 may include an RF transmitter for up-converting and amplifying the frequency of the transmitted signal, and an RF receiver for amplifying the frequency of the received signal to reduce noise. However, this is only an example of transceiver 1310, and the components of transceiver 1310 are not limited to RF transmitters and RF receivers.

[0527] In addition, transceiver 1310 can receive signals via a wireless channel and output them to processor 1330, and can also transmit signals output from processor 1330 via a wireless channel.

[0528] The memory 1320 can store programs and data required for the operation of the UE. Furthermore, the memory 1320 can store control information or data included in signals received by the UE. The memory 1320 can be a storage medium such as read-only memory (ROM), random access memory (RAM), hard disk, CD-ROM, and DVD, or a combination of storage media.

[0529] The processor 1330 can control a series of processes to enable the UE to operate as described above. For example, the transceiver 1310 can receive data signals including control signals transmitted by a base station or network entity, and the processor 1330 can determine the result of receiving the control signals and data signals transmitted by the base station or network entity.

[0530] Figure 14 A block diagram of a base station according to an embodiment of the present disclosure is shown. Figure 14 Corresponding to Figure 2 An example of gNodeB.

[0531] like Figure 14 As shown, a base station according to an embodiment may include a transceiver 1410, a memory 1420, and a processor 1430. The transceiver 1410, memory 1420, and processor 1430 of the base station can operate according to the communication method of the base station described above. However, the components of the base station are not limited thereto. For example, the base station may include more or fewer components than those described above. Furthermore, the processor 1430, transceiver 1410, and memory 1420 may be implemented as a single chip. Additionally, the processor 1430 may include at least one processor.

[0532] Transceiver 1410 is collectively referred to as a base station receiver and a base station transmitter, and can transmit signals to or receive signals from a terminal or network entity. Signals transmitted to or received from a terminal or network entity may include control information and data. Transceiver 1410 may include an RF transmitter for up-converting and amplifying the frequency of the transmitted signal, and an RF receiver for amplifying the frequency of the received signal for low noise and down-converting. However, this is only an example of transceiver 1410, and the components of transceiver 1410 are not limited to RF transmitters and RF receivers.

[0533] In addition, transceiver 1410 can receive signals via a wireless channel and output them to processor 1430, and can also transmit signals output from processor 1430 via a wireless channel.

[0534] The memory 1420 can store programs and data required for the operation of the base station. Furthermore, the memory 1420 can store control information or data included in signals acquired by the base station. The memory 1420 can be a storage medium such as a read-only memory (ROM), random access memory (RAM), hard disk, CD-ROM, and DVD, or a combination of storage media.

[0535] The processor 1430 can control a series of processes to enable the base station to operate as described above. For example, the transceiver 1410 can receive data signals including control signals transmitted by the terminal, and the processor 1430 can determine the result of receiving the control signals and data signals transmitted by the terminal.

[0536] In one example, a user equipment (UE) includes: a transceiver configured to receive information about channel state information (CSI) reports, which indicate (i) One antenna group, (ii) a reporting quantity, wherein the reporting quantity corresponds to a delay offset (DO) or a frequency offset (FO); and a processor operatively coupled to the transceiver, the processor being configured to: determine a reference antenna group based on the information; and, based on the information and the reference antenna group, determine (N_TRP antenna groups other than the reference antenna group) Each antenna group has calibration-related information (CLI), wherein the transceiver is also configured to send a CSI report including a CLI indicator, and wherein the CLI indicator indicates a reference antenna group and CLI.

[0537] In another example, where Each antenna group in the antenna group corresponds to a corresponding CSI reference signal (CSI-RS) resource set or a corresponding CSI-RS resource.

[0538] In another example, the reference antenna group consists of a payload size of The reference indicator is used to indicate the bit.

[0539] In another example, where: when the reporting quantity corresponds to FO, for The CLI for each of the antenna groups includes an FO value, which is indicated by a B-bit indicator and corresponds to... The values ​​of code points in the alphabetic set, and The code point value corresponds to and "invalid" code points Equal intervals, where .

[0540] In another example, where: The value is configured via the first Radio Resource Control (RRC) parameter. The value is configured via the second RRC parameter, where It includes the first episode, which is 32. It is the second episode, which includes 0.1 parts per million (ppm).

[0541] In another example, where: when the reporting quantity corresponds to DO, for The CLI for each of the antenna groups includes two DO values, at least one of which is indicated by a B-bit indicator and corresponds to the following: The values ​​in the alphabetic set of code point values, and The code point value corresponds to In Equally spaced ranges and "outside-range" code points, among which .

[0542] In another example, where: The value is configured via the first RRC parameter, and the value is It is configured via the second RRC parameter, where It is a set including a cyclic prefix (CP) of length 1.

[0543] In one example, the base station (BS) includes: a processor; and a transceiver operatively coupled to the processor, the transceiver being configured to: transmit information regarding channel state information (CSI) reports, which indicate (i) One antenna group, (ii) a reporting quantity, wherein the reporting quantity corresponds to a delay offset (DO) or frequency offset (FO); and receiving a CSI report including a calibration-related information (CLI) indicator, wherein the CLI indicator indicates the reference antenna group and for antennas other than the reference antenna group. In the antenna groups ( CLI for each antenna group.

[0544] In another example, where Each antenna group in the antenna group corresponds to a corresponding CSI Reference Signal (CSI-RS) resource set or a corresponding CSI-RS resource.

[0545] In another example, the reference antenna group consists of a payload size of The reference indicator is used to indicate the bit.

[0546] In another example, where: when the reporting quantity corresponds to FO, The CLI for each of the antenna groups includes an FO value, which is indicated by a b-bit indicator and corresponds to... The values ​​in the alphabetic set of code point values, and The code point value corresponds to and "invalid" code points Equal intervals, where .

[0547] In another example, where: The value is configured via the first Radio Resource Control (RRC) parameter. The value is configured via the second RRC parameter, where A is the first set, which includes 32, and A is the second set, which includes 0.1 parts per million (ppm).

[0548] In another example, where: when the reporting quantity corresponds to DO, Each of the antenna groups has a CLI consisting of two DO values, at least one of which is indicated by a b-bit indicator and corresponds to the following: The values ​​in the alphabetic set of code point values, and The code point value corresponds to In Equally spaced ranges and "outside-range" code points, among which .

[0549] In one example, a method performed by a user equipment (UE) includes: receiving information about a channel state information (CSI) report, which indicates (i) One antenna group, (ii) a reporting quantity, wherein the reporting quantity corresponds to a delay offset (DO) or a frequency offset (FO); a reference antenna group is determined based on the information; and, based on the information and the reference antenna group, a method is determined for antennas other than the reference antenna group. In the antenna groups ( Each antenna group receives calibration-related information (CLI); and a CSI report is sent including CLI indicators, which indicate the reference antenna group and CLI.

[0550] In another example, the reference antenna group consists of a payload size of The reference indicator for the bit is indicated.

[0551] In another example, where: when the reporting quantity corresponds to FO, The CLI for each of the antenna groups includes an FO value, which is indicated by a B-bit indicator and corresponds to... The values ​​of code points in the alphabetic set, and The code point value corresponds to and "invalid" code points Equal intervals, where .

[0552] In another example, where: The value is configured via the first Radio Resource Control (RRC) parameter. The value is configured via the second RRC parameter, where M is the first set including 32. It is the second episode, which includes 0.1 parts per million (ppm).

[0553] In another example, where: when the reporting quantity corresponds to DO, Each of the antenna groups has a CLI consisting of two DO values, at least one of which is indicated by a b-bit indicator and corresponds to the following: The values ​​of code points in the alphabetic set, and The code point value corresponds to In Equally spaced ranges and "outside-range" code points, among which .

Claims

1. A user equipment (UE), comprising: The transceiver is configured to receive information about channel state information (CSI) reports, the information indicating (i) One antenna group, and (ii) the reporting quantity, wherein the reporting quantity corresponds to the delay offset (DO) or the frequency offset (FO); as well as A processor, operably coupled to the transceiver, is configured to: The reference antenna group is determined based on the information; as well as Based on the information and the reference antenna group, it is determined that for the antennas other than the reference antenna group... In each antenna group Each of the calibration-related information (CLI) records. The transceiver is also configured to send a CSI report including a CLI indicator, and The CLI indicator refers to the reference antenna group and the CLI.

2. The UE according to claim 1, wherein, The Each antenna group in the antenna group corresponds to a corresponding CSI reference signal (CSI-RS) resource set or a corresponding CSI-RS resource.

3. The UE according to claim 1, wherein, The reference antenna group consists of having A reference indicator for the size of the bit payload.

4. The UE according to claim 1, wherein: When the reported quantity corresponds to FO, for the aforementioned The CLI for each of the antenna groups includes the FO value. The FO value is indicated by a B-bit indicator and corresponds to including The values ​​of code point values ​​in the alphabetic set, and The code point value corresponds to In Equidistant values ​​and "invalid" code points, among which .

5. The UE according to claim 4, wherein: The value is configured via the first Radio Resource Control (RRC) parameter, and The value is configured via the second RRC parameter, where It includes the first episode of episode 32, and It is the second episode, which includes 0.1 parts per million (ppm).

6. The UE according to claim 1, wherein: When the reporting volume corresponds to DO, for Each CLI of an antenna group includes two DO values. At least one of the two DO values ​​is indicated by an indicator of size B bits, and corresponds to including The values ​​of code point values ​​in the alphabetic set, and The code point value corresponds to In Equidistant range and "outside range" code points, among which .

7. The UE according to claim 6, wherein: The value is configured via the first RRC parameter, and The value is configured via the second RRC parameter, where It is a set that includes a cyclic prefix (CP) of length 1.

8. A base station (BS), comprising: processor; and A transceiver, operatively coupled to the processor, is configured to: Send information about the Channel State Information (CSI) report, the information indicating (i) One antenna group, and (ii) the reporting quantity, wherein the reporting quantity corresponds to a delay offset (DO) or a frequency offset (FO); and Receive CSI reports including calibration-related information (CLI) indicators. The CLI indicator refers to the reference antenna group and the antennas other than the reference antenna group. In each antenna group Each CLI.

9. The BS according to claim 8, wherein, The Each antenna group in the antenna group corresponds to a corresponding CSI reference signal (CSI-RS) resource set or a corresponding CSI-RS resource.

10. The BS according to claim 8, wherein, The reference antenna group consists of having A reference indicator for the size of the bit payload.

11. The BS according to claim 8, wherein: When the reporting volume corresponds to FO, for The CLI for each of the antenna groups includes the FO value. The FO value is indicated by a B-bit indicator and corresponds to including The values ​​of code point values ​​in the alphabetic set, and The code point value corresponds to Equidistant values ​​and "invalid" code points, among which .

12. The BS according to claim 11, wherein: The value is configured via the first Radio Resource Control (RRC) parameter, and The value is configured via the second RRC parameter, where It includes the first episode of episode 32, and It is the second episode, which includes 0.1 parts per million (ppm).

13. The BS according to claim 8, wherein: When the reporting volume corresponds to DO, for Each CLI of an antenna group includes two DO values. At least one of the two DO values ​​is indicated by an indicator of size B bits, and corresponds to including The values ​​of code point values ​​in the alphabetic set, and The code point value corresponds to In Equidistant range and "outside range" code points, among which .

14. The BS according to claim 13, wherein: The value is configured via the first RRC parameter, and The value is configured via the second RRC parameter, where It is a set that includes a cyclic prefix (CP) of length 1.

15. A method performed by a user equipment (UE), the method comprising: Receive information about a Channel State Information (CSI) report, the information indicating (i) One antenna group, (ii) Reporting quantity, wherein the reporting quantity corresponds to delay offset (DO) or frequency offset (FO); The reference antenna group is determined based on the information described above; Based on the information and the reference antenna group, it is determined that for the antennas other than the reference antenna group... In each antenna group Each of the calibration-related information (CLI); and Send a CSI report including CLI indicators. The CLI indicator refers to the reference antenna group and the CLI.

Images