Method and apparatus for receiving and transmitting information on a SBFD resource in a wireless communication system

Abstract

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The disclosure provides a method performed by a user equipment (UE) in a wireless communication system, the method includes receiving, from a base station, first information configuring a sub-band full duplex (SBFD) symbol, the SBFD symbol including an uplink (UL) sub-band and a downlink (DL) sub-bands; receiving, from the base station, second information configuring a cross link interference (CLI)-received signal strength indicator (RSSI) measurement resource; identifying at least one frequency resource for a CLI-RSSI measurement by excluding a frequency resource outside frequency resources which are in the DL sub-bands; and performing the CLI-RSSI measurement on the at least one frequency resource.

Description

METHOD AND APPARATUS FOR RECEIVING AND TRANSMITTING INFORMATION ON A SBFD RESOURCE IN A WIRELESS COMMUNICATION SYSTEM

[0001] The present application relates to the technical field of wireless communication, and more specifically, to a method and device for receiving and transmitting information.

[0002] 5G mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in “Sub 6GHz” bands such as 3.5GHz, but also in “Above 6GHz” bands referred to as mmWave including 28GHz and 39GHz. In addition, it has been considered to implement 6G mobile communication technologies (referred to as Beyond 5G systems) in terahertz (THz) bands (for example, 95GHz to 3THz bands) in order to accomplish transmission rates fifty times faster than 5G mobile communication technologies and ultra-low latencies one-tenth of 5G mobile communication technologies.

[0003] At the beginning of the development of 5G mobile communication technologies, in order to support services and to satisfy performance requirements in connection with enhanced Mobile BroadBand (eMBB), Ultra Reliable Low Latency Communications (URLLC), and massive Machine-Type Communications (mMTC), there has been ongoing standardization regarding beamforming and massive MIMO for mitigating radio-wave path loss and increasing radio-wave transmission distances in mmWave, supporting numerologies (for example, operating multiple subcarrier spacings) for efficiently utilizing mmWave resources and dynamic operation of slot formats, initial access technologies for supporting multi-beam transmission and broadbands, definition and operation of BWP (BandWidth Part), new channel coding methods such as a LDPC (Low Density Parity Check) code for large amount of data transmission and a polar code for highly reliable transmission of control information, L2 pre-processing, and network slicing for providing a dedicated network specialized to a specific service.

[0004] Currently, there are ongoing discussions regarding improvement and performance enhancement of initial 5G mobile communication technologies in view of services to be supported by 5G mobile communication technologies, and there has been physical layer standardization regarding technologies such as V2X (Vehicle-to-everything) for aiding driving determination by autonomous vehicles based on information regarding positions and states of vehicles transmitted by the vehicles and for enhancing user convenience, NR-U (New Radio Unlicensed) aimed at system operations conforming to various regulation-related requirements in unlicensed bands, NR UE Power Saving, Non-Terrestrial Network (NTN) which is UE-satellite direct communication for providing coverage in an area in which communication with terrestrial networks is unavailable, and positioning.

[0005] Moreover, there has been ongoing standardization in air interface architecture / protocol regarding technologies such as Industrial Internet of Things (IIoT) for supporting new services through interworking and convergence with other industries, IAB (Integrated Access and Backhaul) for providing a node for network service area expansion by supporting a wireless backhaul link and an access link in an integrated manner, mobility enhancement including conditional handover and DAPS (Dual Active Protocol Stack) handover, and two-step random access for simplifying random access procedures (2-step RACH for NR). There also has been ongoing standardization in system architecture / service regarding a 5G baseline architecture (for example, service based architecture or service based interface) for combining Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) for receiving services based on UE positions.

[0006] As 5G mobile communication systems are commercialized, connected devices that have been exponentially increasing will be connected to communication networks, and it is accordingly expected that enhanced functions and performances of 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research is scheduled in connection with eXtended Reality (XR) for efficiently supporting AR (Augmented Reality), VR (Virtual Reality), MR (Mixed Reality) and the like, 5G performance improvement and complexity reduction by utilizing Artificial Intelligence (AI) and Machine Learning (ML), AI service support, metaverse service support, and drone communication.

[0007] Furthermore, such development of 5G mobile communication systems will serve as a basis for developing not only new waveforms for providing coverage in terahertz bands of 6G mobile communication technologies, multi-antenna transmission technologies such as Full Dimensional MIMO (FD-MIMO), array antennas and large-scale antennas, metamaterial-based lenses and antennas for improving coverage of terahertz band signals, high-dimensional space multiplexing technology using OAM (Orbital Angular Momentum), and RIS (Reconfigurable Intelligent Surface), but also full-duplex technology for increasing frequency efficiency of 6G mobile communication technologies and improving system networks, AI-based communication technology for implementing system optimization by utilizing satellites and AI (Artificial Intelligence) from the design stage and internalizing end-to-end AI support functions, and next-generation distributed computing technology for implementing services at levels of complexity exceeding the limit of UE operation capability by utilizing ultra-high-performance communication and computing resources.

[0008] In order to meet the increasing demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also called “Beyond 4G networks” or “Post-LTE systems”.

[0009] In order to achieve a higher data rate, 5G communication systems are implemented in higher frequency (millimeter, mmWave) bands, e.g., 60 GHz bands. In order to reduce propagation loss of radio waves and increase a transmission distance, technologies such as beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antenna, analog beamforming and large-scale antenna are discussed in 5G communication systems.

[0010] In addition, in 5G communication systems, developments of system network improvement are underway based on advanced small cell, cloud radio access network (RAN), ultra-dense network, device-to-device (D2D) communication, wireless backhaul, mobile network, cooperative communication, coordinated multi-points (CoMP), reception-end interference cancellation, etc.

[0011] In 5G systems, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) as advanced coding modulation (ACM), and filter bank multicarrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies have been developed.

[0012] In order to enhance the scheduling efficiency of the wireless communication system, a base station needs to obtain channel state information (CSI) to schedule according to the CSI fed back by a terminal equipment. However, how to further enhance the performance of CSI reporting is a problem to be solved.

[0013] An aspect of the disclosure provides a method performed by a user equipment UE in a wireless communication system, the method includes receiving a channel state information (CSI) reporting configuration, wherein the CSI reporting configuration is associated with resources for cross-link interference (CLI) measurement, the resources for the CLI measurement including K1 resources associated with received signal strength indication (RSSI) and K2 resources associated with reference signal received power (RSRP), K1 1, K2 1; reporting CSI associated with the CLI measurement based on a mapping relation, wherein the mapping relation including a mapping between the K1 resources associated with RSSI and the K2 resources associated with RSRP.

[0014] In an example, the mapping relation is determined based on at least one of the followings: an order of the K1 resources and / or an order of the K2 resources; a first resource set associated with the K1 resources and / or a second resource set associated with the K2 resources; the CSI reporting configuration; a beam associated with the resources for the CLI measurement or information for indicating a beam associated with the resources for the CLI measurement; a time domain unit and / or a frequency domain unit associated with the resources for the CLI measurement.

[0015] In an example, the CSI reporting configuration indicates at least one of the followings: each of the K1 resources is mapped with one or more of the K2 resources; each of the K2 resources is mapped with one or more of the K1 resources.

[0016] In an example, when a first resource of the K1 resources is mapped with a second resource of the K2 resources, the first resource and the second resource satisfy at least one of the followings: the first resource and the second resource are type D quasi co-located; the time domain unit where the first resource is located is the same as the time domain unit where the second resource is located; the frequency domain unit where the first resource is located is the same as the frequency domain unit where the second resource is located; a beam of the first resource is determined based on a beam of the second resource; and / or the time domain unit where the first resource is located is determined based on the time domain unit where the second resource is located; and / or the frequency domain unit where the first resource is located is determined based on the frequency domain unit where the second resource is located; the beam of the second resource is determined based on the beam of the first resource; and / or the time domain unit where the second resource is located is determined based on the time domain unit where the first resource is located; and / or the frequency domain unit where the second resource is located is determined based on the frequency domain unit where the first resource is located.

[0017] In an example, the K1 resources and the K2 resources are mapped one-to-one.

[0018] In an example, the CSI reporting configuration includes a first parameter, wherein the first parameter indicates a number N of resources reported by the UE, the method further includes reporting N resource indicators and Layer 1 quantities associated with the N resource indicators based on the first parameter, wherein the Layer 1 quantities include a first Layer 1 quantity associated with a resource of the K1 resources and a second Layer 1 quantity associated with a resource of the K2 resources, each of the N resource indicators is associated with one of the resources for the CLI measurement.

[0019] In an example, the method further includes reporting a first indicator, the first indicator indicates that one of the N resource indicators is associated with the resource indicator of the largest first Layer 1 quantity and / or the largest second Layer 1 quantity.

[0020] In an example, when a predefined resource indicator of the N resource indicators is associated with the largest first Layer 1 quantity, the first indicator indicates that one of the N resource indicators is associated with the resource indicator of the largest second Layer 1 quantity; or when a predefined resource indicator of the N resource indicators is associated with the largest second Layer 1 quantity, the first indicator indicates that one of the N resource indicators is associated with the resource indicator of the largest first Layer 1 quantity.

[0021] In an example, each of the K1 resources is mapped with one or more of the K2 resources.

[0022] In an example, the CSI reporting configuration includes a second parameter, wherein the second parameter indicates a number N1 of resources associated with RSSI reported by the UE, and the method further includes reporting N1 first resource indicators associated with N1 resources of the K1 resources and second Layer 1 quantities of the resources associated with RSRP associated with the N1 resources based on the second parameter.

[0023] In an example, the second Layer 1 quantities of the resources associated with RSRP associated with the N1 resources include M_max second Layer 1 quantities associated with each of the N1 resources, wherein the M_max is the maximum value of the number of the resources associated with RSRP mapped to each of the K1 resources.

[0024] In an example, a third resource of the N1 resources is mapped to M_actual resources associated with RSRP, wherein M_actual second Layer 1 quantities of M_max second Layer 1 quantities associated with the third resource are mapped one-to-one with M_actual resources associated with RSRP mapped to the third resource; and / or if M_actual<M_max, the value of the second Layer 1 quantity of the M_max second Layer 1 quantities associated with the third resource that is not the M_actual second Layer 1 quantities is a predefined value.

[0025] In an example, the CSI reporting configuration includes a third parameter, wherein the third parameter indicates the number M1 of the resources associated with RSRP mapped to each of the N1 resources reported by the UE, and the method further includes reporting second Layer 1 quantities and / or second resource indicators of the M1 resources of the resources associated with RSRP mapped to each of the N1 resources based on the third parameter.

[0026] In an example, the method further includes reporting a second indicator, wherein when a predefined resource indicator of the N1 first resource indicators is associated with the largest first Layer 1 quantity, the second indicator indicates that one of the N1 first resource indicators is associated with the resource indicator of the largest second Layer 1 quantity, and the size of the second indicator is determined based on N1.

[0027] In an example, if the N1 resources are the N1 resources with the strongest measured RSSI of the K1 resources, the M1 resources are the M1 resources with the strongest measured RSRP of the resources associated with RSRP mapped to each of the N1 resources; or if the N1 resources are the N1 resources with the weakest measured RSSI of the K1 resources, the M1 resources are the M1 resources with the weakest measured RSRP of the resources associated with RSRP mapped to each of the N1 resources.

[0028] In an example, a differential value of the Layer 1 quantity is determined based on a type of the Layer 1 quantity.

[0029] In an example, when the Layer 1 quantity is a differential first Layer 1 quantity, the Layer 1 quantity is determined based on the largest and / or the smallest measured first Layer 1 quantity included in the CSI; and / or when the Layer 1 quantity is a differential second Layer 1 quantity, the Layer 1 quantity is determined based on the largest and / or the smallest measured second Layer 1 quantity included in the CSI.

[0030] In an example, the method further includes receiving configuration information for subband non-overlapping duplex (SBFD), wherein the configuration information for the SBFD indicates an uplink subband and a downlink subband and a time domain resource for the SBFD; and determining frequency domain resources of the resources for the CLI measurement based on the downlink subband, and / or measuring the resources for the CLI measurement in the time domain resource for the SBFD.

[0031] In an example, the frequency domain resources of the resources for the CLI measurement is in the downlink active bandwidth part BWP of a serving cell where the configuration information for the SBFD is located.

[0032] In an example, a frequency domain reference point of the resources for the CLI measurement is determined based on a serving cell where the configuration information for the SBFD is located; or when the resources for the CLI measurement are resources associated with RSSI, the frequency domain reference point of the resources associated with RSSI is determined based on the downlink subband; or when the resources for the CLI measurement are resources associated with RSRP, the frequency domain reference point of the resources associated with RSRP is determined based on the uplink subband.

[0033] In an example, an order of information bits of the CSI is associated with types of the resources for the CLI measurement.

[0034] In an example, the method further includes receiving an indicated transmission configuration indication (TCI) state; and measuring an aperiodic resource for the CLI measurement based on the indicated TCI state.

[0035] In an example, measuring the aperiodic resource for the CLI measurement based on the indicated TCI state includes if a time domain interval between downlink control information (DCI) triggering the aperiodic resource and the aperiodic resource is less than or equal to a threshold, and the time domain interval between the DCI and the resource mapped to the aperiodic resource is less than or equal to the threshold, measuring the aperiodic resource for the CLI measurement based on the indicated TCI state, wherein the threshold is determined based on UE capability and / or predefined.

[0036] Another aspect of the disclosure provides a method performed by a base station in a wireless communication system, the method includes transmitting a channel state information (CSI) reporting configuration, wherein the CSI reporting configuration is associated with resources for cross-link interference (CLI) measurement, the resources for the CLI measurement including K1 resources associated with received signal strength indication (RSSI) and K2 resources associated with reference signal received power (RSRP), K1 1, K2 1; receiving CSI associated with the CLI measurement based on a mapping relation, the mapping relation including a mapping between the K1 resources associated with RSSI and the K2 resources associated with RSRP.

[0037] In an example, the mapping relation is determined based on at least one of the followings: an order of the K1 resources and / or an order of the K2 resources; a first resource set associated with the K1 resources and / or a second resource set associated with the K2 resources; the CSI reporting configuration; a beam associated with the resources for the CLI measurement or information for indicating a beam associated with the resources for the CLI measurement; a time domain unit and / or a frequency domain unit associated with the resources for the CLI measurement.

[0038] In an example, the CSI reporting configuration indicates at least one of the followings: each of the K1 resources is mapped with one or more of the K2 resources; each of the K2 resources is mapped with one or more of the K1 resources.

[0039] In an example, when a first resource of the K1 resources is mapped with a second resource of the K2 resources, the first resource and the second resource satisfy at least one of the followings: the first resource and the second resource are type D quasi co-located; the time domain unit where the first resource is located is the same as the time domain unit where the second resource is located; the frequency domain unit where the first resource is located is the same as the frequency domain unit where the second resource is located; a beam of the first resource is determined based on a beam of the second resource; and / or the time domain unit where the first resource is located is determined based on the time domain unit where the second resource is located; and / or the frequency domain unit where the first resource is located is determined based on the frequency domain unit where the second resource is located; the beam of the second resource is determined based on the beam of the first resource; and / or the time domain unit where the second resource is located is determined based on the time domain unit where the first resource is located; and / or the frequency domain unit where the second resource is located is determined based on the frequency domain unit where the first resource is located.

[0040] In an example, the K1 resources and the K2 resources are mapped one-to-one.

[0041] In an example, the CSI reporting configuration includes a first parameter, wherein the first parameter indicates a number N of resources reported by the UE, and the method further includes receiving N resource indicators and Layer 1 quantities associated with the N resource indicators based on the first parameter, wherein the Layer 1 quantities include a first Layer 1 quantity associated with a resource of the K1 resources and a second Layer 1 quantity associated with a resource of the K2 resources, each of the N resource indicators is associated with one of the resources for the CLI measurement.

[0042] In an example, the method further includes receiving a first indicator, the first indicator indicates that one of the N resource indicators is associated with the resource indicator of the largest first Layer 1 quantity and / or the largest second Layer 1 quantity.

[0043] In an example, when a predefined resource indicator of the N resource indicators is associated with the largest first Layer 1 quantity, the first indicator indicates that one of the N resource indicators is associated with the resource indicator for the largest second Layer 1 quantity; or when a predefined resource indicator of the N resource indicators is associated with the largest second Layer 1 quantity, the first indicator indicates that one of the N resource indicators is associated with the resource indicator for the largest first Layer 1 quantity.

[0044] In an example, each of the K1 resources is mapped with one or more of the K2 resources.

[0045] In an example, the CSI reporting configuration includes a second parameter, wherein the second parameter indicates a number N1 of resources associated with RSSI reported by the UE, and the method further includes receiving N1 first resource indicators associated with N1 resources of the K1 resources and second Layer 1 quantities of the resources associated with RSRP associated with the N1 resources based on the second parameter.

[0046] In an example, the second Layer 1 quantities of the resources associated with RSRP associated with the N1 resources include M_max second Layer 1 quantities associated with each of the N1 resources, wherein the M_max is the maximum value of the number of the resources associated with RSRP mapped to each of the K1 resources.

[0047] In an example, a third resource of the N1 resources is mapped to M_actual resources associated with RSRP, wherein M_actual second Layer 1 quantities of M_max second Layer 1 quantities associated with the third resource are mapped one-to-one with M_actual resources associated with RSRP mapped to the third resource; and / or if M_actual<M_max, the value of the second Layer 1 quantity of the M_max second Layer 1 quantities associated with the third resource that is not the M_actual second Layer 1 quantities is a predefined value.

[0048] In an example, the CSI reporting configuration includes a third parameter, wherein the third parameter indicates the number M1 of the resources associated with RSRP mapped to each of the N1 resources reported by the UE, and the method further includes receiving second Layer 1 quantities and / or second resource indicators of the M1 resources of the resources associated with RSRP mapped to each of the N1 resources based on the third parameter.

[0049] In an example, the method further includes receiving a second indicator, wherein when a predefined resource indicator of the N1 first resource indicators is associated with the largest first Layer 1 quantity, the second indicator indicates that one of the N1 first resource indicators is associated with the resource indicator of the largest second Layer 1 quantity, and the size of the second indicator is determined based on N1.

[0050] In an example, if the N1 resources are the N1 resources with the strongest measured RSSI of the K1 resources, the M1 resources are the M1 resources with the strongest measured RSRP of the resources associated with RSRP mapped to each of the N1 resources; or if the N1 resources are the N1 resources with the weakest measured RSSI of the K1 resources, the M1 resources are the M1 resources with the weakest measured RSRP of the resources associated with RSRP mapped to each of the N1 resources.

[0051] In an example, a differential value of the Layer 1 quantity is determined based on a type of the Layer 1 quantity.

[0052] In an example, when the Layer 1 quantity is a differential first Layer 1 quantity, the Layer 1 quantity is determined based on the largest and / or the smallest measured first Layer 1 quantity included in the CSI; and / or when the Layer 1 quantity is a differential second Layer 1 quantity, the Layer 1 quantity is determined based on the largest and / or the smallest measured second Layer 1 quantity included in the CSI.

[0053] In an example, the method further includes transmitting configuration information for subband non-overlapping duplex (SBFD), wherein the configuration information for the SBFD indicates an uplink subband and a downlink subband and a time domain resource for the SBFD, the downlink subband is used for determining frequency domain resources of the resources for the CLI measurement, and / or the resources for the CLI measurement is measured in the time domain resource for SBFD.

[0054] In an example, the frequency domain resources of the resources for the CLI measurement is in the downlink active bandwidth part BWP of a serving cell where the configuration information for the SBFD is located.

[0055] In an example, a frequency domain reference point of the resources for the CLI measurement is determined based on a serving cell where the configuration information for the SBFD is located; or when the resources for the CLI measurement are resources associated with RSSI, the frequency domain reference point of the resources associated with RSSI is determined based on the downlink subband; or when the resources for the CLI measurement are resources associated with RSRP, the frequency domain reference point of the resources associated with RSRP is determined based on the uplink subband.

[0056] In an example, an order of information bits of the CSI is associated with types of the resources for the CLI measurement.

[0057] In an example, the method further includes transmitting an indicated transmission configuration indication (TCI) state, wherein an aperiodic resource for the CLI measurement are measured based on the indicated TCI state.

[0058] In an example, the aperiodic resource for the CLI measurement being measured based on the indicated TCI state includes if a time domain interval between downlink control information (DCI) triggering the aperiodic resource and the aperiodic resource is less than or equal to a threshold, and the time domain interval between the DCI and the resource mapped to the aperiodic resource is less than or equal to the threshold, the aperiodic resource for the CLI measurement is measured based on the indicated TCI state, wherein the threshold is determined based on UE capability and / or predefined.

[0059] Another aspect of the disclosure provides a user equipment including a transceiver; and a controller coupled with the transceiver and configured to perform the above methods which may be performed by the user equipment.

[0060] Yet another aspect of the disclosure provides a base station including a transceiver; and a controller coupled with the transceiver and configured to perform the above methods which may be performed by the controller.

[0061] The method and device provided in the application improve the performance of CSI, improving the scheduling efficiency of the communication system.

[0062] Aspects of the present disclosure provide efficient communication methods in a wireless communication system.

[0063] The above and other aspects, features, and advantages of the disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0064] FIG. 1 illustrates an overall structure of an example wireless communication network according to various embodiments of the disclosure;

[0065] FIGs. 2a and 2b respectively illustrate a transmission path 200 and a reception path 250 in a wireless communication network according to various embodiments of the disclosure;

[0066] FIGs. 3a and 3b respectively illustrate structures of a user equipment (UE) and a base station in a wireless communication network according to various embodiments of the disclosure;

[0067] FIG. 4 illustrates a method 400 performed by a user equipment (UE) according to various embodiments of the disclosure;

[0068] FIG. 5 illustrates a method 500 performed by a base station according to various embodiments of the disclosure;

[0069] FIG. 6 is a block diagram of a terminal or user equipment (UE) according to an embodiment of the disclosure;

[0070] FIG. 7 is a block diagram of a base station (BS) according to an embodiment of the disclosure; and

[0071] FIG. 8 is a block diagram of a network entity according to an embodiment of the disclosure.

[0072] Hereinafter, embodiments of the disclosure will be described in detail with reference to the accompanying drawings.

[0073] In describing the embodiments, descriptions related to technical contents well-known in the art and not associated directly with the disclosure will be omitted. Such an omission of unnecessary descriptions is intended to prevent obscuring of the main idea of the disclosure and more clearly transfer the main idea.

[0074] For the same reason, in the accompanying drawings, some elements may be exaggerated, omitted, or schematically illustrated. Further, the size of each element does not completely reflect the actual size. In the drawings, identical or corresponding elements are provided with identical reference numerals or different reference numerals.

[0075] The advantages and features of the disclosure and ways to achieve them will be apparent by making reference to embodiments as described below in detail in conjunction with the accompanying drawings. However, the disclosure is not limited to the embodiments set forth below, but may be implemented in various different forms. The following embodiments are provided only to completely disclose the disclosure and inform those skilled in the art of the scope of the disclosure, and the disclosure is defined only by the scope of the appended claims. Throughout the specification, the same or like reference numerals designate the same or like elements. Furthermore, in describing the disclosure, a detailed description of known functions or constitution incorporated herein will be omitted in the case that it is determined that the description may make the subject matter of the disclosure unnecessarily unclear. The terms which will be described below are terms defined in consideration of the functions in the disclosure, and may be different according to users, intentions of the operators, or customs. Therefore, the definitions of the terms should be made based on the contents throughout the specification.

[0076] Herein, it will be understood that each block of the flowchart illustrations, and combinations of blocks in the flowchart illustrations, may be performed based on computer program instructions. These computer program instructions may be loaded collectively onto at least one processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which perform through any one of, or in any combination of, the at least one processor of the computer or other programmable data processing apparatus, create means for performing the functions specified in the flowchart block(s). These computer program instructions may also be stored in a non-transitory computer usable or computer-readable memory that may direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer usable or computer-readable memory produce an article of manufacture including instruction means that perform the function specified in the flowchart block(s). The computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable data processing apparatus to produce a computer executed process such that the instructions that perform on the computer or other programmable data processing apparatus provide steps for executing the functions specified in the flowchart block(s).

[0077] Further, each block may represent a module, segment, or portion of code, which includes one or more executable instructions for executing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the blocks may occur out of the order. For example, two blocks(or functions) shown in succession may in fact be performed substantially concurrently or the blocks may sometimes be performed in the reverse order, depending upon the functionality involved.

[0078] As used in embodiments of the disclosure, a “~unit” may refer to a software element or a hardware element, such as a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC), which performs a predetermined function. However, the term including the word “~unit” does not always have a meaning limited to software or hardware. The “~unit” may be constructed either to be stored in an addressable storage medium or to execute one or more processors. Therefore, the “~unit” includes, for example, software elements, object-oriented software elements, components such as class elements and task elements, processes, functions, properties, procedures, sub-routines, segments of a program code, drivers, firmware, micro-codes, circuits, data, database, data structures, tables, arrays, and parameters. The components and functions provided by the “~unit” may be either combined into a smaller number of components and a “~unit,” or divided into additional components and a “~unit.” Moreover, the components and “~units” may be implemented to reproduce one or more central processing units (CPUs) within a device or a security multimedia card. Further, in the embodiments, the “~unit” may include one or more processors.

[0079] It should be appreciated that the blocks in each flowchart and combinations of the flowcharts may be performed by one or more computer programs which include instructions. The entirety of the one or more computer programs may be stored in a single memory device or the one or more computer programs may be divided with different portions stored in different multiple memory devices.

[0080] Any of the functions or operations described herein can be processed by one processor or a combination of processors. The one processor or the combination of processors is circuitry performing processing and includes circuitry like an application processor (AP, e.g. a CPU), a communication processor (CP, e.g., a modem), a graphics processing unit (GPU), a neural processing unit (NPU) (e.g., an artificial intelligence (AI) chip), a Wi-Fi chip, a Bluetooth® chip, a global positioning system (GPS) chip, a near field communication (NFC) chip, connectivity chips, a sensor controller, a touch controller, a finger-print sensor controller, a display driver integrated circuit (IC), an audio CODEC chip, a universal serial bus (USB) controller, a camera controller, an image processing IC, a microprocessor unit (MPU), a system on chip (SoC), an IC, or the like.

[0081] It will be appreciated that various embodiments of the disclosure according to the claims and description in the specification can be realized in the form of hardware, software or a combination of hardware and software.

[0082] Any such software may be stored in non-transitory computer readable storage media. The non-transitory computer readable storage media store one or more computer programs (software modules), the one or more computer programs include computer-executable instructions that, when executed by one or more processors of an electronic device individually or collectively, cause the electronic device to perform a method of the disclosure.

[0083] Any such software may be stored in the form of volatile or non-volatile storage such as, for example, a storage device like read only memory (ROM), whether erasable or rewritable or not, or in the form of memory such as, for example, random access memory (RAM), memory chips, device or integrated circuits or on an optically or magnetically readable medium such as, for example, a compact disk (CD), digital versatile disc (DVD), magnetic disk or magnetic tape or the like. It will be appreciated that the storage devices and storage media are various embodiments of non-transitory machine-readable storage that are suitable for storing a computer program or computer programs comprising instructions that, when executed, implement various embodiments of the disclosure. Accordingly, various embodiments of the present disclosure may provide a program comprising code for implementing apparatus or a method as claimed in any one of the claims of this specification and a non-transitory machine-readable storage storing such a program.

[0084] Hereinafter, the determination of priority between A and B in the present disclosure may refer to various actions such as selecting the one having a higher priority based on a predefined priority rule and performing an operation corresponding thereto, or omitting or dropping an operation corresponding to the one having a lower priority.

[0085] Hereinafter, "A or B" as described in the present disclosure may be understood as "A and / or B," which may include A, or B, or both A and B.

[0086] In addition, "at least one of A, B, and C" as described in the present disclosure may be understood to include A, or B, or C, or any combination of A, B, and C.

[0087] In addition, "at least one of A, B, or C" as described in the present disclosure may be understood to include A, or B, or C, or any combination of A, B, and C.

[0088] Furthermore, "A / B" as described in the present disclosure may be understood as "A and / or B," which may include A, or B, or both A and B.

[0089] Furthermore, "A, B" as described in the present disclosure may be understood as "A and / or B," which may include A, or B, or both A and B.

[0090] Furthermore, "A and B" as described in the present disclosure may be understood as "A and / or B," which may include A, or B, or both A and B.

[0091] Furthermore, “if condition A and condition B are satisfied,” as described in the present disclosure, may not be limited to a case where both condition A and condition B are satisfied, but may be understood to include a case where either condition A or condition B is individually satisfied, both condition A and condition B are satisfied, or one or more additional conditions are satisfied in combination.

[0092] Furthermore, throughout this disclosure, ordinal terms such as "first," "second," "third," etc., (and similar qualifiers) are used merely to distinguish between different instances, occurrences, configurations, messages, stages, or aspects of elements, operations, or information as described herein. Unless the context clearly dictates otherwise, the use of such ordinal terms does not itself require that the elements, operations, or information distinguished by these terms be structurally different, numerically distinct, or substantively dissimilar. For example, a "first signal" and a "second signal" may refer to instances of the same signal transmitted at different times or containing the same core information despite minor variations, or they may refer to signals with different content or characteristics, depending on the specific context. Similarly, a "first value" and a "second value" may represent the same magnitude but measured or applied in different circumstances, or they may represent different magnitudes. The interpretation should be guided by the specific technical context, function, and relationship described in the relevant portion of the specification and claims.

[0093] Furthermore, the terms “first ~”, “second ~”, etc., as described in the present disclosure with respect to various elements (e.g., information, objects, operation, sequences, or the like), should not limit those elements. These terms may only be intended to distinguish one element from another, and may not be intended to indicate a specific order. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element.

[0094] Furthermore, even if “first ~” and “second ~” are described in the present disclosure, it may be understood that element(s) referred to by “first ~” and “second ~” may be the same or different. For example, in case of element(s) being information, first information and second information may both be same information and, in some cases, are separate and different information.

[0095] In addition, the terms “if ~” and “in case that ~” as used in the disclosure or claims may be interpreted to include the meanings of “when (or upon) ~,” “in response to ~,” “based on ~,” or “according to ~,” and may be used interchangeably with these expressions. In addition, expressions other than those exemplified herein may also be used, as long as they have substantially the same meaning and do not impair the technical features of the present disclosure.

[0096] For example, the physical layer signaling may be referred to as Layer 1 (L1) signaling and may include downlink control information (DCI). In addition, the higher layer signaling may include a medium access control (MAC) control message, a radio resource control (RRC) signaling message, a non-access stratum (NAS) signaling message, or an application layer message. The RRC signaling message may be referred to as L3 (layer 3) signaling. It should be noted, however, that the higher layer signaling is not limited to the aforementioned examples.

[0097] In addition, the term "not perform" as used in the present disclosure or claims may, in context, be understood to mean that the corresponding step is omitted or skipped. Such a term may be replaced with other terms having the same or substantially equivalent meaning.

[0098] In addition, "transmitting a message including A and B" as described in the present disclosure, may be understood as encompassing both (i) transmitting A and B in a single message, and (ii) transmitting A and B separately via multiple messages (e.g., transmitting a first message including A and a second message including B). This interpretation may also apply to messages that include two or more items (e.g., A, B, C), transmitted either together or separately.

[0099] In addition, "transmitting a message including A and transmitting a message including B" may also be interpreted as transmitting a message including A and B in a single message.

[0100] In the specific embodiments of the present disclosure described below, terms or components included in the disclosure may be expressed in singular or plural form depending on the specific embodiments presented. However, such singular or plural expressions are selected appropriately for convenience of description, and the present disclosure is not limited to a singular or plural number of components. A component expressed in the plural form may be implemented as a single component, and a component expressed in the singular form may be implemented as multiple components.

[0101] The drawings or flowcharts described below illustrate exemplary methods that may be implemented according to the principles of the present disclosure, and various modifications may be made to the methods illustrated in the flowcharts of the present disclosure. For example, although illustrated as a series of steps, various steps in each drawing or flowchart may overlap, occur in parallel, occur in a different order, or be repeated. In other examples, any step may be omitted or replaced with another step.

[0102] The methods and apparatuses proposed in the embodiments of the present disclosure are not limited to each embodiment individually, but may also be applied in combination of all or some of the embodiments proposed in the disclosure. Therefore, the embodiments of the present disclosure may be modified and applied without significantly departing from the scope of the present disclosure, as would be understood by those skilled in the art.

[0103] In this case, even if certain wordings are described differently across embodiments, they may be used interchangeably or in substitution or in combination if their underlying concepts are equivalent. For example, for the same or equivalent concept, even if one embodiment uses the expression "A" and another embodiment uses the expression "B", such expressions may be understood interchangeably, in substitution, or in combination.

[0104] The terms used in the following description to refer to access nodes, network entities, messages, interfaces between network entities, various types of identification information, and the like, are provided merely for the convenience of explanation by way of example. Therefore, the present disclosure is not limited to the terms described below, and other terms having equivalent technical meanings may also be used. Such terms may also be interchangeable with terms defined in any 3rd generation partnership project　(3GPP) technical specifications (TS) where appropriate.

[0105] Hereinafter, a base station is an entity that allocates resources to terminals, and may be at least one of a gNode B, an eNode B, a Node B, a base station (BS), a wireless access unit, a BS controller, or a node on a network.

[0106] Furthermore, the base station of the present disclosure may include a split architecture comprising a central unit (CU) and a distributed unit (DU). In this structure, the CU is configured to process the higher layers of the control and user planes, while the DU is configured to process lower-layer radio resource functions. The embodiments of the present disclosure may be equally applicable to 5G base station architectures in which such CU and DU functional splits are implemented.

[0107] A terminal may include a UE, a mobile station (MS), a cellular phone, a smartphone, a computer, or a multimedia system capable of performing communication functions.

[0108] In the disclosure, a downlink (DL) refers to a radio link through which a BS transmits a signal to a UE, and an uplink (UL) refers to a radio link through which a UE transmits a signal to a BS.

[0109] Furthermore, hereinafter, 5th generation (5G) mobile communication technologies (e.g., 5G new radio (NR)), 6th generation (6G) mobile communication technologies may be described by way of example, but the embodiments of the present disclosure may also be applied to other communication systems having similar technical backgrounds or channel types. For example, newly evolved mobile communication systems developed after 5G and 6G may be included. Furthermore, based on determinations by those skilled in the art, the embodiments of the present disclosure may also be applied to other communication systems (e.g., Wi-Fi systems) through some modifications without significantly departing from the scope of the present disclosure

[0110] In the following description, the terms physical channel and signal may be used interchangeably with data or control signal. For example, the term physical downlink shared channel (PDSCH) refers to a physical channel through which data is transmitted, but the term PDSCH may also be used to refer to the data itself. That is, in the present disclosure, the expression "transmit a physical channel" may be interpreted as being equivalent to the expression "transmit data or a signal via a physical channel."

[0111] Hereinafter, in the context of the present disclosure, higher layer signaling may refer to signaling corresponding to at least one or any combination of the following: master information block (MIB), system information block (SIB) or SIB M (M = 1, 2, ...), radio resource control (RRC), or medium access control (MAC) control element (CE), or a non-access stratum (NAS) signaling message, or an application layer message. The RRC signaling message may be referred to as L3 (layer 3) signaling.

[0112] In addition, L1 signaling may refer to signaling corresponding to at least one or any combination of signaling techniques using the at least one or any combination of the following physical layer channels or signaling: physical downlink control channel (PDCCH), downlink control information (DCI), user equipment (UE)-specific DCI, group-common DCI, common DCI, scheduling DCI (e.g., DCI used for scheduling downlink or uplink data), non-scheduling DCI (e.g., DCI not used for scheduling downlink or uplink data) physical uplink control channel (PUCCH), or uplink control information (UCI). The L1 signaling message may be referred to as a physical layer signaling.

[0113] Hereinafter, the expression that information is configured by the BS, as used in the present disclosure or claims, may, in context, be understood to mean that the terminal receives the corresponding information from the BS via a physical layer signaling or a higher layer signaling. Such an expression may be replaced with other terms having the same or substantially equivalent meaning.

[0114] Hereinafter, the operational principle of the present disclosure will be described in detail with reference to the accompanying drawings.

[0115] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the disclosure as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the disclosure. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

[0116] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the disclosure is provided for illustration purpose only and not for the purpose of limiting the disclosure as defined by the appended claims and their equivalents.

[0117] It is to be understood that the singular forms “a”, “an” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a component surface” includes reference to one or more of such surfaces.

[0118] The term “include” or “may include” refers to the existence of a corresponding disclosed function, operation or component which can be used in various embodiments of the disclosure and does not limit one or more additional functions, operations, or components. The terms such as “include” and / or “have” may be construed to denote a certain characteristic, number, step, operation, constituent element, component or a combination thereof, but may not be construed to exclude the existence of or a possibility of addition of one or more other characteristics, numbers, steps, operations, constituent elements, components or combinations thereof.

[0119] The term “or” used in various embodiments of the disclosure includes any or all of combinations of listed words. For example, the expression “A or B” may include A, may include B, or may include both A and B.

[0120] Unless defined differently, all terms used herein, which include technical terminologies or scientific terminologies, have the same meaning as that understood by a person skilled in the art to which the disclosure belongs. Such terms as those defined in a generally used dictionary are to be interpreted to have the meanings equal to the contextual meanings in the relevant field of art, and are not to be interpreted to have ideal or excessively formal meanings unless clearly defined in the disclosure.

[0121] The various embodiments of the disclosure can be applied to various communication systems, such as: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, broadband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system Frequency division duplex (FDD) systems, time division duplex (TDD) systems, universal mobile telecommunications systems (UMTS), global interoperability for microwave access (WiMAX) communication systems, fifth generation (5G) systems or new wireless (NR) systems, etc. In addition, the various embodiments of the disclosure can be applied to future oriented communication technologies.

[0122] FIG. 1 illustrates an example wireless networK100 according to various embodiments of the disclosure. The embodiment of the wireless networK100 shown in FIG. 1 is for illustration only. Other embodiments of the wireless networK100 can be used without departing from the scope of the disclosure.

[0123] The wireless networK100 includes a gNodeB (gNB) 101, a gNB 102, and a gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one Internet Protocol (IP) networK130, such as the Internet, a private IP network, or other data networks.

[0124] Depending on a type of the network, other well-known terms such as “base station” or “access point” can be used instead of “gNodeB” or “gNB”. For convenience, the terms “gNodeB” and “gNB” are used in this patent document to refer to network infrastructure components that provide wireless access for remote terminals. And, depending on the type of the network, other well-known terms such as “mobile station”, “user station”, “remote terminal”, “wireless terminal” or “user apparatus” can be used instead of “user equipment” or “UE”. For convenience, the terms “user equipment” and “UE” are used in this patent document to refer to remote wireless devices that wirelessly access the gNB, no matter whether the UE is a mobile device (such as a mobile phone or a smart phone) or a fixed device (such as a desktop computer or a vending machine).

[0125] gNB 102 provides wireless broadband access to the networK130 for a first plurality of User Equipments (UEs) within a coverage area 120 of gNB 102. The first plurality of UEs include a UE 111, which may be located in a Small Business (SB); a UE 112, which may be located in an enterprise (E); a UE 113, which may be located in a WiFi Hotspot (HS); a UE 114, which may be located in a first residence (R); a UE 115, which may be located in a second residence (R); a UE 116, which may be a mobile device (M), such as a cellular phone, a wireless laptop computer, a wireless PDA, etc. GNB 103 provides wireless broadband access to networK130 for a second plurality of UEs within a coverage area 125 of gNB 103. The second plurality of UEs include a UE 115 and a UE 116. In some embodiments, one or more of gNBs 101-103 can communicate with each other and with UEs 111-116 using 5G, Long Term Evolution (LTE), LTE-A, WiMAX or other advanced wireless communication technologies.

[0126] The dashed lines show approximate ranges of the coverage areas 120 and 125, and the ranges are shown as approximate circles merely for illustration and explanation purposes. It should be clearly understood that the coverage areas associated with the gNBs, such as the coverage areas 120 and 125, may have other shapes, including irregular shapes, depending on configurations of the gNBs and changes in the radio environment associated with natural obstacles and man-made obstacles.

[0127] As will be described in more detail below, one or more of gNB 101, gNB 102, and gNB 103 include a 2D antenna array as described in embodiments of the disclosure. In some embodiments, one or more of gNB 101, gNB 102, and gNB 103 support codebook designs and structures for systems with 2D antenna arrays.

[0128] Although FIG. 1 illustrates an example of the wireless networK100, various changes can be made to FIG. 1. The wireless networK100 can include any number of gNBs and any number of UEs in any suitable arrangement, for example. Furthermore, gNB 101 can directly communicate with any number of UEs and provide wireless broadband access to the networK130 for those UEs. Similarly, each gNB 102-103 can directly communicate with the networK130 and provide direct wireless broadband access to the networK130 for the UEs. In addition, gNB 101, 102 and / or 103 can provide access to other or additional external networks, such as external telephone networks or other types of data networks.

[0129] FIGs. 2a and 2b illustrate example wireless transmission and reception paths according to the disclosure. In the following description, the transmission path 200 can be described as being implemented in a gNB, such as gNB 102, and the reception path 250 can be described as being implemented in a UE, such as UE 116. However, it should be understood that the reception path 250 can be implemented in a gNB and the transmission path 200 can be implemented in a UE. In some embodiments, the reception path 250 is configured to support codebook designs and structures for systems with 2D antenna arrays as described in embodiments of the disclosure.

[0130] The transmission path 200 includes a channel coding and modulation blocK205, a Serial-to-Parallel (S-to-P) blocK210, a size N Inverse Fast Fourier Transform (IFFT) blocK215, a Parallel-to-Serial (P-to-S) blocK220, a cyclic prefix addition blocK225, and an up-converter (UC) 230. The reception path 250 includes a down-converter (DC) 255, a cyclic prefix removal blocK260, a Serial-to-Parallel (S-to-P) blocK265, a size N Fast Fourier Transform (FFT) blocK270, a Parallel-to-Serial (P-to-S) blocK275, and a channel decoding and demodulation blocK280.

[0131] In the transmission path 200, the channel coding and modulation blocK205 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. The Serial-to-Parallel (S-to-P) blocK210 converts (such as demultiplexes) serial modulated symbols into parallel data to generate N parallel symbol streams, where N is a size of the IFFT / FFT used in gNB 102 and UE 116. The size N IFFT blocK215 performs IFFT operations on the N parallel symbol streams to generate a time domain output signal. The Parallel-to-Serial blocK220 converts (such as multiplexes) parallel time domain output symbols from the Size N IFFT blocK215 to generate a serial time domain signal. The cyclic prefix addition blocK225 inserts a cyclic prefix into the time domain signal. The up-converter 230 modulates (such as up-converts) the output of the cyclic prefix addition blocK225 to an RF frequency for transmission via a wireless channel. The signal can also be filtered at a baseband before switching to the RF frequency.

[0132] The RF signal transmitted from gNB 102 arrives at UE 116 after passing through the wireless channel, and operations in reverse to those at gNB 102 are performed at UE 116. The down-converter 255 down-converts the received signal to a baseband frequency, and the cyclic prefix removal blocK260 removes the cyclic prefix to generate a serial time domain baseband signal. The Serial-to-Parallel blocK265 converts the time domain baseband signal into a parallel time domain signal. The Size N FFT blocK270 performs an FFT algorithm to generate N parallel frequency domain signals. The Parallel-to-Serial blocK275 converts the parallel frequency domain signal into a sequence of modulated data symbols. The channel decoding and demodulation blocK280 demodulates and decodes the modulated symbols to recover the original input data stream.

[0133] Each of gNBs 101-103 may implement a transmission path 200 similar to that for transmitting to UEs 111-116 in the downlink, and may implement a reception path 250 similar to that for receiving from UEs 111-116 in the uplink. Similarly, each of UEs 111-116 may implement a transmission path 200 for transmitting to gNBs 101-103 in the uplink, and may implement a reception path 250 for receiving from gNBs 101-103 in the downlink.

[0134] Each of the components in FIGs. 2a and 2b can be implemented using only hardware, or using a combination of hardware and software / firmware. As a specific example, at least some of the components in FIGs. 2a and 2b may be implemented in software, while other components may be implemented in configurable hardware or a combination of software and configurable hardware. For example, the FFT blocK270 and IFFT blocK215 may be implemented as configurable software algorithms, in which the value of the size N may be modified according to the implementation.

[0135] Furthermore, although described as using FFT and IFFT, this is only illustrative and should not be interpreted as limiting the scope of the disclosure. Other types of transforms can be used, such as Discrete Fourier transform (DFT) and Inverse Discrete Fourier Transform (IDFT) functions. It should be understood that for DFT and IDFT functions, the value of variable N may be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of variable N may be any integer which is a power of 2 (such as 1, 2, 4, 8, 16, etc.)

[0136] Although FIGs. 2a and 2b illustrate examples of wireless transmission and reception paths, various changes may be made to FIGs. 2a and 2b. For example, various components in FIGs. 2a and 2b can be combined, further subdivided or omitted, and additional components can be added according to specific requirements. Furthermore, FIGs. 2a and 2b are intended to illustrate examples of types of transmission and reception paths that can be used in a wireless network. Any other suitable architecture can be used to support wireless communication in a wireless network.

[0137] FIG. 3a illustrates an example UE 116 according to the disclosure. The embodiment of UE 116 shown in FIG. 3a is for illustration only, and UEs 111-115 of FIG. 1 can have the same or similar configuration. However, a UE has various configurations, and FIG. 3a does not limit the scope of the disclosure to any specific implementation of the UE.

[0138] UE 116 includes an antenna 301, a radio frequency (RF) transceiver 302, a transmission (TX) processing circuit 303, a microphone 304, and a reception (RX) processing circuit 305. UE 116 also includes a speaker 306, a controller / processor 307, an input / output (I / O) interface 308, an input device(s) 309, a display 310, and a memory 311. The memory 311 includes an operating system (OS) 312 and one or more applications 313.

[0139] The RF transceiver 302 receives an incoming RF signal transmitted by a gNB of the wireless networK100 from the antenna 301. The RF transceiver 302 down-converts the incoming RF signal to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is transmitted to the RX processing circuit 305, where the RX processing circuit 305 generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. The RX processing circuit 305 transmits the processed baseband signal to speaker 306 (such as for voice data) or to controller / processor 307 for further processing (such as for web browsing data).

[0140] The TX processing circuit 303 receives analog or digital voice data from microphone 304 or other outgoing baseband data (such as network data, email or interactive video game data) from controller / processor 307. The TX processing circuit 303 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 302 receives the outgoing processed baseband or IF signal from the TX processing circuit 303 and up-converts the baseband or IF signal into an RF signal transmitted via the antenna 301.

[0141] The controller / processor 307 can include one or more processors or other processing devices and execute an OS 312 stored in the memory 311 in order to control the overall operation of UE 116. For example, the controller / processor 307 can control the reception of forward channel signals and the transmission of backward channel signals through the RF transceiver 302, the RX processing circuit 305 and the TX processing circuit 303 according to well-known principles. In some embodiments, the controller / processor 307 includes at least one microprocessor or microcontroller.

[0142] The controller / processor 307 is also capable of executing other processes and programs residing in the memory 311, such as operations for channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the disclosure. The controller / processor 307 can move data into or out of the memory 311 as required by an execution process. In some embodiments, the controller / processor 307 is configured to execute the application 313 based on the OS 312 or in response to signals received from the gNB or the operator. The controller / processor 307 is also coupled to an I / O interface 308, where the I / O interface 308 provides UE 116 with the ability to connect to other devices such as laptop computers and handheld computers. I / O interface 308 is a communication path between these accessories and the controller / processor 307.

[0143] The controller / processor 307 is also coupled to the input device(s) 309 and the display 310. An operator of UE 116 can input data into UE 116 using the input device(s) 309. The display 310 may be a liquid crystal display or other display capable of presenting text and / or at least limited graphics (such as from a website). The memory 311 is coupled to the controller / processor 307. A part of the memory 311 can include a random access memory (RAM), while another part of the memory 311 can include a flash memory or other read-only memory (ROM).

[0144] Although FIG. 3a illustrates an example of UE 116, various changes can be made to FIG. 3a. For example, various components in FIG. 3a can be combined, further subdivided or omitted, and additional components can be added according to specific requirements. As a specific example, the controller / processor 307 can be divided into a plurality of processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Furthermore, although FIG. 3a illustrates that the UE 116 is configured as a mobile phone or a smart phone, UEs can be configured to operate as other types of mobile or fixed devices.

[0145] FIG. 3b illustrates an example gNB 102 according to the disclosure. The embodiment of gNB 102 shown in FIG. 3b is for illustration only, and other gNBs of FIG. 1 can have the same or similar configuration. However, a gNB has various configurations, and FIG. 3b does not limit the scope of the disclosure to any specific implementation of a gNB. It should be noted that gNB 101 and gNB 103 can include the same or similar structures as gNB 102.

[0146] As shown in FIG. 3b, gNB 102 includes a plurality of antennas 370a-370n, a plurality of RF transceivers 372a-372n, a transmission (TX) processing circuit 374, and a reception (RX) processing circuit 376. In certain embodiments, one or more of the plurality of antennas 370a-370n include a 2D antenna array. gNB 102 also includes a controller / processor 378, a memory 380, and a backhaul or network interface 382.

[0147] RF transceivers 372a-372n receive an incoming RF signal from antennas 370a-370n, such as a signal transmitted by UEs or other gNBs. RF transceivers 372a-372n down-convert the incoming RF signal to generate an IF or baseband signal. The IF or baseband signal is transmitted to the RX processing circuit 376, where the RX processing circuit 376 generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. RX processing circuit 376 transmits the processed baseband signal to controller / processor 378 for further processing.

[0148] The TX processing circuit 374 receives analog or digital data (such as voice data, network data, email or interactive video game data) from the controller / processor 378. TX processing circuit 374 encodes, multiplexes and / or digitizes outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 372a-372n receive the outgoing processed baseband or IF signal from TX processing circuit 374 and up-convert the baseband or IF signal into an RF signal transmitted via antennas 370a-370n.

[0149] The controller / processor 378 can include one or more processors or other processing devices that control the overall operation of gNB 102. For example, the controller / processor 378 can control the reception of forward channel signals and the transmission of backward channel signals through the RF transceivers 372a-372n, the RX processing circuit 376 and the TX processing circuit 374 according to well-known principles. The controller / processor 378 can also support additional functions, such as higher-layer wireless communication functions. For example, the controller / processor 378 can perform a Blind Interference Sensing (BIS) process such as that performed through a BIS algorithm, and decode a received signal from which an interference signal is subtracted. A controller / processor 378 may support any of a variety of other functions in gNB 102. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0150] The controller / processor 378 is also capable of executing programs and other processes residing in the memory 380, such as a basic OS. The controller / processor 378 can also support channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the disclosure. In some embodiments, the controller / processor 378 supports communication between entities such as web RTCs. The controller / processor 378 can move data into or out of the memory 380 as required by an execution process.

[0151] The controller / processor 378 is also coupled to the backhaul or network interface 382. The backhaul or network interface 382 allows gNB 102 to communicate with other devices or systems through a backhaul connection or through a network. The backhaul or network interface 382 can support communication over any suitable wired or wireless connection(s). For example, when gNB 102 is implemented as a part of a cellular communication system, such as a cellular communication system supporting 5G or new radio access technology or NR, LTE or LTE-A, the backhaul or network interface 382 can allow gNB 102 to communicate with other gNBs through wired or wireless backhaul connections. When gNB 102 is implemented as an access point, the backhaul or network interface 382 can allow gNB 102 to communicate with a larger network, such as the Internet, through a wired or wireless local area network or through a wired or wireless connection. The backhaul or network interface 382 includes any suitable structure that supports communication through a wired or wireless connection, such as an Ethernet or an RF transceiver.

[0152] The memory 380 is coupled to the controller / processor 378. A part of the memory 380 can include an RAM, while another part of the memory 380 can include a flash memory or other ROMs. In certain embodiments, a plurality of instructions, such as the BIS algorithm, are stored in the memory. The plurality of instructions are configured to cause the controller / processor 378 to execute the BIS process and decode the received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0153] As will be described in more detail below, the transmission and reception paths of gNB 102 (implemented using RF transceivers 372a-372n, TX processing circuit 374 and / or RX processing circuit 376) support aggregated communication with FDD cells and TDD cells.

[0154] Although FIG. 3b illustrates an example of gNB 102, various changes may be made to FIG. 3b. For example, gNB 102 can include any number of each component shown in FIG. 3a. As a specific example, the access point can include many backhaul or network interfaces 382, and the controller / processor 378 can support routing functions to route data between different network addresses. As another specific example, although shown as including a single instance of the TX processing circuit 374 and a single instance of the RX processing circuit 376, gNB 102 can include multiple instances of each (such as one for each RF transceiver).

[0155] In the disclosure, the term “channel state information (CSI)” may be used interchangeably with the terms “CSI parameter” or “CSI quantity”.

[0156] In the disclosure, CSI may include at least one of: CSI reference signal (CSI-RS) resource indicator (CRI), rank indicator (RI), precoding matrix indicator (PMI), channel quality indicator (CQI), layer indicator (LI), synchronization signal (SS) / physical broadcast channel (PBCH) block resource indicator (SSBRI), layer 1-reference signal received power (L1-RSRP), layer 1-single to interference noise ratio (L1-SINR), CapabilityIndex.

[0157] In the disclosure, the term “CSI reporting configuration” may be used interchangeably with the terms “CSI reporting configuration information” or “information for CSI reporting configuration” or “information for configuring CSI report”.

[0158] In the disclosure, the CSI may be the CSI reported by the UE in a report, or in a report instance.

[0159] In the disclosure, the term “reference signal” may be used interchangeably with the term “reference signal resource”.

[0160] In the disclosure, the reference signal may include at least one of: a reference signal for synchronization, a reference signal for demodulation (e.g., a demodulation reference signal (DM-RS), a reference signal for obtaining of the channel state, a reference signal for phase tracking, a reference signal for mobility, a reference signal for positioning, a reference signal for channel measurement, a reference signal for interference measurement, a reference signal for sounding. Optionally, the reference signal for synchronization includes at least one of: a primary synchronization signal, a secondary synchronization signal. Optionally, the reference signal for synchronization may include a synchronization signal / physical broadcast channel block (SS / PBCH block, SSB). Optionally, the reference signal for demodulation may include at least one of: a reference signal for data channel demodulation and a reference signal for control channel demodulation. Optionally, the data channel may include at least one of: a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH). Optionally, the control channel may include at least one of: a physical downlink control channel (PDCCH) and a physical uplink control channel (PUCCH). Optionally, the reference signal for obtaining of the channel state may include at least one of: a reference signal for tracking, a reference signal for CSI acquisition, and a reference signal for beam management. Optionally, the reference signal for beam management includes at least one of: a reference signal for obtaining L1-RSRP, a reference signal for obtaining L1-SINR. Optionally, obtaining L1-RSRP may be computing L1-RSRP. Optionally, obtaining L1-SINR may be computing L1-SINR. In the disclosure, the “reference signal for sounding” may be referred as a sounding reference signal (SRS).

[0161] In the disclosure, the term “beam” may include at least one of: “quasi co-location (QCL) parameter”, “transmission configuration indication (TCI) state”, “spatial domain filter”, “antenna port”, “transmission and reception point (TRP)”, “reference signal”, “beam information”, “beam index”. Optionally, a beam and another beam being the same may be a beam and another beam being quasi co-located.

[0162] In the disclosure, an antenna port can be defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed.

[0163] In the disclosure, two antenna ports are said to be quasi co-located if the large-scale properties of the channel over which a symbol on one antenna port is conveyed can be inferred from the channel over which a symbol on the other antenna port is conveyed. Optionally, the large-scale properties include one or more of delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters.

[0164] In the disclosure, the term “QCL parameter” may be used interchangeably with the terms “QCL information”, “QCL assumption”, “QCL configuration”, “QCL configuration and / or QCL type”. Optionally, the QCL parameter may include / represent at least one of: Doppler shift, Doppler spread, average delay, delay spread, spatial reception parameter. The spatial reception parameter may be a parameter for spatial reception. Optionally, the QCL parameter may include a combination of different types of parameters. For example, the QCL parameter may include Doppler shift, Doppler spread, average delay and delay spread, and such QCL parameter may be referred as QCL parameter type A. For example, the QCL parameter may include Doppler shift and Doppler spread, and such QCL parameter may be referred as QCL parameter type B. For example, the QCL parameter may include Doppler shift and average delay, and such QCL parameter may be referred as QCL parameter type C. For example, the QCL parameter may include spatial reception parameter, and such QCL parameter may be referred as QCL parameter type D. For example, two antenna ports are said to be quasi co-located if the large-scale properties of the channel over which a symbol on one antenna port is conveyed can be inferred from the channel over which a symbol on the other antenna port is conveyed. Optionally, the large-scale properties include one or more of delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters. For example, two antenna ports are said to be quasi co-located subject to QCL parameter type D if spatial Rx parameters of the channel over which a symbol on one antenna port is conveyed can be inferred from the channel over which a symbol on the other antenna port is conveyed.

[0165] In the disclosure, the term “TCI state” may be used interchangeably with the terms “TCI state configuration” or “TCI state configuration information” or “information for configuring the TCI state” or “information for indicating the TCI state”. Optionally, the TCI state may be a unified TCI state. Optionally, the TCI state may be at least one of an uplink TCI state (UL TCI state), a downlink TCI state (DL TCI state), a joint TCI state. Optionally, the unified TCI state may be an uplink TCI state (UL TCI state) and a downlink TCI state (DL TCI state), or a joint TCI state.

[0166] Optionally, a TCI state may include parameters configuring quasi co-location relation, these parameters configure the relation between the reference signal (e.g., one or two reference signals, or one or two downlink reference signals) and at least one of: a demodulation reference signal (DM-RS) port of the PDSCH, a DM-RS port of the PDCCH, a CSI-RS port of a CSI-RS resource. Optionally, a quasi co-location relation is configured by a higher-layer parameter (e.g., qcl-Type1) for the first downlink reference signal. Optionally, a quasi co-location relation is configured by a higher-layer parameter (e.g., qcl-Type2) for the second downlink reference signal. In case of two downlink reference signals, the QCL types are not the same, regardless of whether the references are to the same DL RS or different DL RSs.

[0167] In the disclosure, the term “spatial domain filter” may be used interchangeably with the terms “spatial filter” or “uplink transmission spatial domain filter” or “spatial domain filter for uplink transmission” or “spatial domain filter for downlink reception”.

[0168] In the disclosure, the term “transmission occasion of reference signal resource” may be used interchangeably with the term “occasion of reference signal resource” or “reception occasion of reference signal resource” or “transmission occasion of reference signal” or “occasion of reference signal” or “reception occasion of reference signal”.

[0169] In the disclosure, the term “UE capability” may be used interchangeably with the terms “UE feature” or “UE feature group” or “UE capability parameter” or “reported UE capability” or “UE capability signaling” or “reported UE capability parameter”.

[0170] In the disclosure, a time domain resource may include / correspond to several time domain units.

[0171] In the disclosure, a time domain unit may be one of: a frame, a subframe, a slot, a sub-slot, a symbol. Optionally, the sub-slot may be a subset of a slot in time domain. For example, symbols included in the sub-slot are a subset of symbols included in the slot. Optionally, in the disclosure, the time domain unit may be one of: a second, a millisecond, a microsecond, a nanosecond, and a sample.

[0172] In the disclosure, a frequency domain resource may include / correspond to several frequency domain units.

[0173] In the disclosure, a frequency domain unit may be at least one of a band, a subband, a component carrier (CC), a bandwidth part (BWP), a resource block, a resource block group (RBG), a subcarrier, a carrier, a frequency band, a frequency range, a cell, a serving cell. The resource block may be a physical resource block (PRB) or a common resource block (CRB). The frequency range may be frequency range 1, frequency range 2 (e.g., frequency range 2-1 and / or frequency range 2-2).

[0174] In the disclosure, a time-frequency unit may be one of a resource element (RE), a resource element group (REG). The resource element group may include one or more resource elements. For example, a resource element group may include 6 or 12 resource elements.

[0175] In the disclosure, the starting time domain position of a channel or signal or resource is an earlier position in time domain, and the ending time domain position of a channel or signal or resource is a later position in time domain.

[0176] In the disclosure, the starting frequency domain position of a channel or signal or resource is a lower position in frequency domain, and the ending frequency domain position of a channel or signal or resource is a higher position in frequency domain.

[0177] In the disclosure, the term “PDCCH” may be used interchangeably with the terms “downlink control channel” or “control channel for downlink transmission” or “control channel for downlink”.

[0178] In the disclosure, the term “PDCCH” may be used interchangeably with the term “PDCCH candidate”.

[0179] In the disclosure, the term “PDSCH” may be used interchangeably with the terms “downlink data channel” or “data channel for downlink transmission” or “data channel for downlink”.

[0180] In the disclosure, the term “PUCCH” may be used interchangeably with the terms “uplink control channel” or “control channel for uplink transmission” or “control channel for uplink”.

[0181] In the disclosure, the term “PUSCH” may be used interchangeably with the terms “uplink data channel” or “data channel for uplink transmission” or “data channel for uplink”.

[0182] In the disclosure, the term “downlink control information (DCI)” may be used interchangeably with the terms “DCI format” or “control information for downlink”.

[0183] In the disclosure, the term “uplink control information (UCI)” may be used interchangeably with the term “control information for uplink”.

[0184] In the disclosure, detecting DCI includes: receiving and / or decoding DCI.

[0185] In the disclosure, the term “information bits of DCI / UCI” may be used interchangeably with the terms “information bits associated with DCI / UCI” or “information bits included in DCI / UCI” or “information bits corresponding to DCI / UCI”. Optionally, the information bits associated with DCI / UCI may include information bits of the DCI / UCI and check bits (for example, cyclic redundancy check (CRC) bits) corresponding to the DCI / UCI. Optionally, the information bits associated with DCI / UCI may include information bits of the DCI / UCI and bits (for example, cyclic redundancy check (CRC) bits) for checking the DCI / UCI.

[0186] In the disclosure, the term “information bits of PDSCH / PUSCH” may be used interchangeably with the term “information bits associated with PDSCH / PUSCH” or “information bits carried by PDSCH / PUSCH” or “information bits of TB included in PDSCH / PUSCH” or “information bits of TB carried by PDSCH / PUSCH”. Optionally, the information bits associated with the information bits carried by PDSCH / PUSCH may include the information bits of TB carried by PDSCH / PUSCH and the check bits (for example, cyclic redundancy check (CRC) bits) corresponding to the TB. Optionally, the information bits associated with PDSCH / PUSCH may include information bits of PDSCH / PUSCH and bits (for example, cyclic redundancy check (CRC) bits) for checking the TB carried by the PDSCH / PUSCH.

[0187] In the disclosure, the term “size of information field” may be used interchangeably with the terms “bitwidth of information field” or “number of information bits in information field”.

[0188] In the disclosure, the information bits of the DCI may be the information bits included in the DCI, or the information bits associated with the DCI, or the payload of the DCI.

[0189] In the disclosure, the existence of an information field may be that the size of the information field is greater than 0 bit. The absence of an information field may be that the size of the information field is equal to 0 bit.

[0190] In the disclosure, the value x of an information field may correspond to the (x+1)-th codepoint of the information field, x 0. The term “value of an information field” may be used interchangeably with the term “codepoint of an information field”. The term “value x of an information field” may be used interchangeably with the term “(x+1)-th codepoint of an information field”, where x 0.

[0191] In the disclosure, monitoring a PDCCH candidate may be receiving the PDCCH candidate and / or decoding according to the monitored DCI format.

[0192] In the disclosure, the DCI format may be at least one of: DCI format 0_0, DCI format 0_1, DCI format 0_2, DCI format 1_0, DCI format 1_1, and DCI format 1_2.

[0193] In the disclosure, hybrid automatic repeat request (HARQ) information may be hybrid automatic repeat request-acknowledgement (HARQ-ACK) information.

[0194] In the disclosure, the PDCCH may carry the DCI and / or the CRC corresponding to the DCI, or the DCI and / or the CRC corresponding to the DCI may be in the PDCCH. Optionally, the CRC may be scrambled in a specific manner. For example, optionally, the CRC may be scrambled based on a radio network temporary identifier (RNTI). Two PDCCHs having the same scrambling may be these two PDCCHs being scrambled by the same RNTI. Optionally, the RNTI may be one of a cell radio network temporary identifier (C-RNTI), a configured scheduling radio network temporary identifier (CS-RNTI).

[0195] In the disclosure, the higher-layer parameter includes at least one of a radio resource control (RRC) parameter, a media access control (MAC)-control element (CE) (MAC-CE) parameter. The RRC parameter may be a parameter configured / indicated by RRC signaling. The MAC-CE parameter may be a parameter indicated / activated by MAC-CE signaling. Optionally, information being configured by a higher-layer parameter may be the information being indicated / activated by the higher-layer parameter.

[0196] In the disclosure, higher-layer signaling includes at least one of the RRC parameter and the parameter indicated by MAC-CE; or the higher-layer signaling may include at least one of RRC signaling and MAC-CE signaling. Optionally, information being configured by higher-layer signaling may be the information being indicated / activated by the higher-layer signaling.

[0197] In the disclosure, the UE obtaining configuration information may be the UE receiving / being configured with the configuration information. In the disclosure, “obtaining configuration information” may be used interchangeably with the terms “receiving configuration information” or “being configured with configuration information”.

[0198] In the disclosure, a cell includes at least one of: a serving cell, a candidate cell, a primary cell, a secondary cell, and a special cell.

[0199] In the disclosure, when the DCI schedules a channel or signal, a cell receiving or transmitting the channel or signal may be referred as a scheduled cell. A cell where the DCI is detected or a cell where the DCI is monitored / received may be referred as a scheduling cell.

[0200] In the disclosure, when the DCI schedules a channel or signal, a BWP receiving or transmitting the channel or signal may be referred as a scheduled BWP. A BWP where the DCI is detected, or a BWP where the PDCCH associated with the DCI is monitored / received may be referred as a scheduling BWP.

[0201] In some cases, the base station may enhance the coverage of the communication system or reduce the delay through duplex. Duplex may include subband non-overlapping full duplex (SBFD). For example, a subband non-overlapping full duplex mode may be adopted in a time division duplex (TDD) frequency band (for example, in an unpaired spectrum). Subband non-overlapping duplex may refer to dividing the bandwidth (e.g., carrier bandwidth) of a communication node (e.g., a base station) into more than one subband (e.g., without overlapping between subbands), and uplink and downlink communication may be performed simultaneously on different subbands.

[0202] In the disclosure, the term “time division duplex (TDD) configuration information” may be used interchangeably with the terms “TDD uplink / downlink configuration information” or “information for configuring slot format”.

[0203] In the disclosure, the term “SBFD configuration information” may be used interchangeably with the terms “configuration information used for SBFD” or “configuration information for the SBFD” or “configuration information for the SBFD operation” or “configuration information for the SBFD operation of base station”.

[0204] In the disclosure, the term “subband non-overlapping duplex” may be used interchangeably with “subband full duplex”.

[0205] In the disclosure, the term “frequency domain resource corresponding to uplink subband” may be used interchangeably with the terms “frequency domain position corresponding to uplink subband” or “frequency domain resource of uplink subband” or “frequency domain resource for uplink” or “frequency domain position for uplink” or “frequency domain resource for uplink transmission” or “frequency domain position for uplink transmission”.

[0206] In the disclosure, the term “frequency domain resource corresponding to downlink subband” may be used interchangeably with the terms “frequency domain position corresponding to downlink subband” or “frequency domain resource of downlink subband” or “frequency domain resource for downlink” or “frequency domain position for downlink” or “frequency domain resource for downlink reception” or “frequency domain position for downlink reception”.

[0207] In the disclosure, the term “frequency domain resource corresponding to guardband” may be used interchangeably with the terms “frequency domain position corresponding to guardband” or “frequency domain resource of guardband” or “frequency domain resource between (boundaries of) uplink subband and downlink subband” or “frequency domain position between (boundaries of) uplink subband and downlink subband” or “frequency domain resource for protecting / isolating uplink subband and downlink subband”.

[0208] In the disclosure, the term “SBFD cell” may be used interchangeably with the term “first cell”, but the name of “SBFD cell” is not limited by the disclosure.

[0209] In the disclosure, “determining measurement” may be determining the result of the measurement, or obtaining the result of the measurement, or obtaining the measurement based on the reference signal, or obtaining the measurement based on measurement resource(s), or obtaining the measurement for determining CSI.

[0210] In the disclosure, “determining channel measurement” may be determining the result of the channel measurement, or obtaining the result of the channel measurement, or obtaining the channel measurement based on the reference signal, or obtaining the channel measurement based on measurement resource(s), or obtaining the channel measurement for determining CSI.

[0211] In the disclosure, “determining interference measurement” may be determining the result of the interference measurement, or obtaining the result of the interference measurement, or obtaining the interference measurement based on the reference signal, or obtaining the interference measurement based on measurement resource(s), or obtaining the interference measurement for determining CSI.

[0212] In the disclosure, the term “uplink channel associated with CSI report” may be used interchangeably with the terms “uplink channel corresponding to CSI report” or “uplink channel carrying CSI report”.

[0213] In the disclosure, the term “SBFD cell” may be used interchangeably with “SBFD serving cell”.

[0214] Embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0215] FIG. 4 illustrates a method 400 performed by a user equipment (UE) according to various embodiments of the disclosure. The method 400 includes: at 401, the UE receives a CSI reporting configuration from a base station, wherein the CSI reporting configuration is associated resources for cross-link interference (CLI) measurement, the resources for the CLI measurement include K1 (K1 1) CLI-RSSI resources and K2 (K2 1) SRS-RSRP resources; at 402, the UE determines a mapping relation between the K1 CLI-RSSI resources and the K2 SRS-RSRP resources; and at 403, the UE reports CSI associated with the CLI measurement to the base station based on the mapping relation. Each operation is described in detail below.

[0216] In some cases, the UE may obtain / receive / be configured with SBFD configuration information. Optionally, the UE may receive / obtain / be configured with the SBFD configuration information via common signaling (e.g., common RRC signaling) or specific signaling (e.g., specific RRC signaling). Optionally, the SBFD configuration information may be configuration information associated with the SBFD. For example, the SBFD configuration information may be configuration information for the SBFD. For example, the SBFD configuration information may be configuration information associated with SBFD operation (of the base station). For example, the SBFD configuration information may be configuration information for indicating a time domain resource and / or a frequency domain resource associated with the SBFD operation. Optionally, the UE receives the SBFD configuration information in RRC_CONNECTED state. Optionally, the UE may receive the SBFD configuration information in RRC_IDLE / RRC_INACTIVE state.

[0217] ● Optionally, a cell (e.g., serving cell) corresponding to / associated with the SBFD configuration information / where the SBFD configuration information is located / for may be called an SBFD cell.

[0218] ■ Optionally, the cell corresponding to / associated with the SBFD configuration information may be a cell that performs the SBFD operation associated with the SBFD configuration. Optionally, the cell corresponding to / associated with the SBFD configuration information may be a primary cell (e.g., PCell) or a special cell (e.g., a SpCell). Optionally, the cell corresponding to / associated with the SBFD configuration information may be a secondary cell (e.g., SCell). Optionally, the cell corresponding to / associated with the SBFD configuration information may be a cell where the time domain resource and / or the frequency domain resource associated with the SBFD configuration information are located / correspond to. Optionally, the cell corresponding to / associated with the SBFD configuration information may be a cell where the time domain resource and / or the frequency domain resource associated with the SBFD configuration information are applied / used. Optionally, the cell corresponding to / associated with the SBFD configuration information may be the cell where the SBFD configuration information is received, or the cell where the SBFD configuration information is configured.

[0219] ● Optionally, the SBFD configuration information may indicate / correspond to / be associated with the frequency domain resource and / or the (corresponding / associated) time domain resource. Optionally, the time domain resource corresponding to / associated with the frequency domain resource refer to the time domain resource on which the frequency domain resource configured by the SBFD configuration information is applicable / effective / workable. Optionally, the time domain resource corresponding to / associated with the frequency domain resource refers to the time domain resource on which the frequency domain resource configured by the SBFD configuration information is applied / used (by the UE).

[0220] ■ Optionally, the SBFD configuration information may indicate the frequency domain resource (associated with / corresponding to the SBFD time domain resource). The frequency domain resource indicated by / configured by / associated with the SBFD configuration information may be referred as the SBFD frequency domain resource. Optionally, the SBFD configuration information may indicate at least one of a frequency domain resource corresponding to an uplink subband, a frequency domain resource corresponding to a downlink subband, and a frequency domain resource corresponding to a guardband. Optionally, the SBFD frequency domain resource may include at least one of the frequency domain resource corresponding to the uplink subband, the frequency domain resource corresponding to the downlink subband, and the frequency domain resource corresponding to the guardband. The frequency domain units included in the frequency domain resource are described below by taking PRB as an example. Optionally, the frequency domain resource corresponding to the uplink subband may include one or more consecutive PRBs, or a group of consecutive PRBs. Optionally, the frequency domain resource corresponding to the downlink subband may include one or more PRBs, or one or two groups of consecutive PRBs. Optionally, the frequency domain resource corresponding to the guardband may include one PRB or a group of consecutive PRBs or two groups of consecutive PRBs. Optionally, the uplink subband may be a subband for uplink (e.g., uplink transmission). Optionally, the uplink subband may be a frequency domain resource for uplink (e.g., uplink transmission). Optionally, the downlink subband may be a subband for downlink (e.g., downlink reception). Optionally, the downlink subband may be a frequency domain resource for downlink (e.g., downlink reception). Optionally, the frequency domain resource corresponding to the guardband may be determined based on the frequency domain resource corresponding to the uplink subband and / or the frequency domain resource corresponding to the downlink subband (and the carrier bandwidth of the SBFD cell). Optionally, the frequency domain resource corresponding to the downlink subband may be determined based on the frequency domain resource corresponding to the uplink subband and / or the frequency domain resource corresponding to the guardband (and the carrier bandwidth of the SBFD cell). Optionally, the frequency domain resource corresponding to the downlink subband may include one or more PRBs, or one or two groups of consecutive PRBs.

[0221] ◆ Optionally, the SBFD frequency domain resource is determined based on the SBFD configuration information and a reference subcarrier spacing parameter indicated by the TDD configuration information (e.g., the reference subcarrier spacing parameter referenceSubcarrierSpacing included in the TDD configuration information) (for the cell). For example, the SBFD frequency domain resource is determined based on (the parameter associated with the frequency domain indicated by) the SBFD configuration information and the reference subcarrier spacing parameter (e.g., referenceSubcarrierSpacing) included in the TDD configuration information (for the cell). The method may reuse the parameter indicated by the TDD configuration information to determine the SBFD frequency domain resource, saving signaling overhead and improving the efficiency of the communication system.

[0222] ◆ Optionally, the SBFD frequency domain resource is determined based on the reference subcarrier spacing parameter indicated by the SBFD configuration information (e.g., the reference subcarrier spacing parameter referenceSubcarrierSpacing included in the SBFD configuration information). For example, the SBFD time domain resource is determined based on the reference subcarrier spacing parameter (e.g., referenceSubcarrierSpacing) included in the SBFD configuration information. The method may utilize the SBFD configuration information to determine the SBFD frequency domain resource, which facilitates the base station to flexibly perform the SBFD operation, improving the efficiency of the communication system.

[0223] ◆ Optionally, on the SBFD frequency domain resource, the part of the uplink BWP within the frequency domain resource corresponding to the uplink subband associated with the SBFD frequency domain resource may be / is allowed for uplink transmission. Optionally, on the SBFD time domain resource, the part of the uplink BWP not within the frequency domain resource corresponding to the uplink subband associated with the SBFD frequency domain resource may not be / is not allowed for uplink transmission. The method defines the scheduling restriction based on the SBFD configuration, which facilitates the base station to schedule flexibly, improving the efficiency of the communication system.

[0224] ◆ Optionally, on the SBFD frequency domain resource, the part of the downlink BWP within the frequency domain resource corresponding to the downlink subband associated with the SBFD frequency domain resource may be / is allowed for downlink reception. Optionally, on the SBFD time domain resource, the part of the downlink BWP not within the frequency domain resource corresponding to the downlink subband associated with the SBFD frequency domain resource may not be / is not allowed for downlink reception. The method defines the scheduling restriction based on the SBFD configuration, which facilitates the base station to schedule flexibly, improving the efficiency of the communication system.

[0225] ■ Optionally, the SBFD configuration information may indicate / configure / be associated with time domain resource. The time domain resource indicated by / configured by / associated with the SBFD configuration information may be referred as the SBFD time domain resource. The time domain resource other than the SBFD time domain resource (or a part of the time domain resource other than the SBFD time domain resource) may be referred as a non-SBFD time domain resource; or the time domain resource that is not the SBFD time domain resource may be referred as the non-SBFD time domain resource; or the time domain resource outside the SBFD time domain resource and within the downlink slot / downlink symbol and / or flexible slot / flexible symbol indicated / configured by the base station are referred as the non-SBFD time domain resource, or the time domain resource within the uplink slot / uplink symbol indicated / configured by the base station are referred as the non-SBFD time domain resource. The SBFD time domain resource may include several time domain units. Optionally, the SBFD time domain resource is not on the uplink slot and / or uplink symbol indicated by common information. Optionally, the SBFD time domain resource is on the downlink slot and / or downlink symbol indicated by the base station, and / or the SBFD time domain resource is on the flexible slot and / or flexible symbol indicated / configured by the base station. Optionally, the non-SBFD time domain resource is not on the uplink slot or uplink symbol indicated by the common information. Optionally, the non-SBFD time domain resource is on the downlink slot and / or downlink symbol indicated by the base station, and / or the non-SBFD time domain resource is on the flexible slot and / or flexible symbol indicated / configured by the base station. Optionally, the UE may obtain at least one of the uplink symbol, the uplink slot, the downlink symbol, the downlink slot, the flexible symbol, and the flexible slot indicated by the base station via the TDD configuration information. The TDD configuration information includes the TDD configuration information for the cell (e.g., TDD-UL-DL-ConfigurationCommon) and / or the TDD configuration information for the UE (tdd-UL-DL-ConfigurationDedicated).

[0226] ◆ Optionally, the SBFD time domain resource is determined based on the SBFD configuration information and the reference subcarrier spacing parameter indicated by the TDD configuration information (e.g., the reference subcarrier spacing parameter referenceSubcarrierSpacing included in the TDD configuration information) (for the cell). For example, the SBFD time domain resource is determined based on (the parameter associated with the time domain resource indicated by) the SBFD configuration information and the reference subcarrier spacing parameter (e.g., referenceSubcarrierSpacing) included in the TDD configuration information (for the cell). The method may reuse the parameter indicated by the TDD configuration information to determine the SBFD time domain resource, saving signaling overhead and improving the efficiency of the communication system.

[0227] ◆ Optionally, the SBFD time domain resource is determined based on the reference subcarrier spacing parameter indicated by the SBFD configuration information (e.g., the reference subcarrier spacing parameter referenceSubcarrierSpacing included in the SBFD configuration information). For example, the SBFD time domain resource is determined based on the reference subcarrier spacing parameter (e.g., referenceSubcarrierSpacing) included in the SBFD configuration information. The method may utilize the SBFD configuration information to determine the SBFD time domain resource, which facilitates the base station to flexibly perform the SBFD operation, improving the efficiency of the communication system.

[0228] ◆ Optionally, on the BWP, if a symbol / slot partially overlaps with the SBFD time domain resource, the symbol / slot may not be / is not allowed for transmission / reception. Optionally, on the BWP, if a symbol / slot fully overlaps with the SBFD time domain resource, the symbol / slot may be / is allowed for transmission / reception. The method defines the scheduling restriction based on the SBFD configuration, which facilitates the base station to schedule flexibly, improving the efficiency of the communication system.

[0229] When the base station performs SBFD operation, on the same time domain resource (for example, on the SBFD time domain resource), one of two UEs served by the base station performs downlink reception, while the other UE performs uplink transmission. The UE performing uplink transmission will cause interference to the UE performing downlink reception. Such interference may be referred as UE-UE cross link interference (CLI). Methods for measuring and / or reporting the CLI are discussed below so that the base station may know the strength of the inter-UE CLI in order for the base station to reduce or avoid the inter-UE CLI.

[0230] In some cases, the UE may obtain / receive / be configured with the CSI reporting configuration. Optionally, the CSI reporting configuration may be for the cross link interference (CLI) measurement. Such CSI reporting configuration may be referred as the CSI reporting configuration for the CLI measurement. The UE needs the measurement of the resources in order to determine / report the corresponding CSI. The resources associated with the CSI reporting configuration are discussed below. Optionally, the resources associated with the CSI reporting configuration include the resources for interference measurement. Optionally, the interference measurement may be the CLI measurement. Optionally, the resources for interference measurement include sounding reference signal-reference signal received power (SRS-RSRP) resources and / or CLI received signal strength indication (CLI-RSSI) resources. Optionally, the CLI-RSSI resource may be CSI-IM and / or CSI-RS. Optionally, the CLI-RSSI resource may be CSI-IM and / or ZP CSI-RS. In the disclosure, the CLI-RSSI resource may be referred as a first type resource, and the SRS-RSRP resource may be referred as a second type resource, but the names of these two types of resources are not limited by the disclosure. Similarly, L1-CLI-RSSI described below may be referred as a first type Layer 1 quantity, and L1-SRS-RSRP may be referred as a second type Layer 1 quantity, but the names of these two types of Layer 1 quantities are not limited by the disclosure. Optionally, the SRS-RSRP resource may be associated with the SRS resource. Optionally, the SRS-RSRP resource may be the resource for measuring the SRS. The SRS-RSRP resource may be the resource for measuring the RSRP. Optionally, the SRS-RSRP resource may be the resource for obtaining / determining / measuring the RSRP associated with the CLI based on the SRS. Optionally, the CLI-RSSI resource may be the resource for obtaining / determining / measuring the RSSI (associated with the CLI). Optionally, the CLI-RSSI resource may be the resource for obtaining the RSSI associated with the CLI.

[0231] Optionally, the time domain behaviour of a CLI-RSSI resource may be periodic, semi-persistent, or aperiodic. Optionally, the time domain behaviour of an SRS-RSRP resource may be periodic, semi-persistent, or aperiodic. Optionally, an SRS-RSRP resource may be a periodic resource, or a semi-persistent resource, or an aperiodic resource.

[0232] The configuration method of the CLI-RSSI resource is discussed below. A CLI-RSSI resource may be configured / defined by CLI-RSSI resource configuration information. Optionally, the CSI reporting configuration may be associated with one or more CLI-RSSI resources. Optionally, the CSI reporting configuration may be associated with one or more CLI-RSSI resources for interference measurement and / or reporting. For example, the CSI reporting configuration may be associated with / include / refer / indicate one or more CLI-RSSI resource configuration information. For example, the CSI reporting configuration may be associated with / include / refer / indicate one or more CLI-RSSI resource IDs. The CLI-RSSI resource configuration information may be the higher-layer parameter RSSI-ResourceConfigCLI. The CLI-RSSI resource configuration information may include / configure / indicate at least one of the followings:

[0233] ● A CLI-RSSI resource identity (ID). Optionally, the ID is used for identifying the CLI-RSSI resource. Optionally, the resource ID may be configured by the higher-layer parameter (rssi-ResourceId).

[0234] ● The subcarrier spacing. Optionally, the subcarrier spacing may be configured by the higher-layer parameter (rssi-SCS). Optionally, the subcarrier spacing may be the reference subcarrier spacing for CLI-RSSI measurement. The reference subcarrier spacing is used for determining the frequency domain resource of the CLI-RSSI resource. Optionally, the UE may perform measurement not based on the reference subcarrier spacing but based on the subcarrier spacing at which the UE activates the BWP (for example, downlink BWP). For example, the UE performs the CLI-RSSI measurement with the SCS of the active bandwidth part within the configured CLI-RSSI resource in the active BWP regardless of the reference SCS of the measurement resource.

[0235] ● A first frequency domain resource. The first frequency domain resource may be determined based on a first starting frequency domain unit and a first frequency domain resource width.

[0236] ■ The first starting frequency domain unit (e.g., PRB). Optionally, the first starting frequency domain resource may be configured by the higher-layer parameter (e.g., startPRB). Optionally, the first starting frequency domain unit may be the index of the starting frequency domain unit of the measurement bandwidth. Here, the measurement bandwidth may be the measurement bandwidth associated with / corresponding to the CLI-RSSI resource. Optionally, the first starting frequency domain unit is not in the uplink subband indicated by the SBFD configuration information. The first starting frequency domain unit is outside the uplink subband indicated by the SBFD configuration information. Optionally, the first starting frequency domain unit is in the downlink subband indicated by the SBFD configuration information. Since the CLI generated by the UE may leak into the downlink subband and affect downlink reception, the CLI needs to be measured in the downlink subband. Such configuration restriction prevents the starting point of the CLI-RSSI resource from occurring in the uplink subband, improving the reliability of the communication system.

[0237] ■ The first frequency domain resource width. In the disclosure, the term “frequency domain resource width” may be used interchangeably with the terms “measurement bandwidth” or “size of frequency domain resource”. Optionally, the first frequency domain resource width may be configured by the higher-layer parameter (e.g., nrofPRBs). This higher-layer parameter indicates the allowed size of the measurement bandwidth. For example, the parameter indicates the number of (consecutive) PRBs included in the first frequency domain resource width. Optionally, the first frequency domain resource width refers to the resource width of the CLI-RSSI resource, or the number of frequency domain units included in the CLI-RSSI resource, or (the number of) the frequency domain resources included in / occupied by the CLI-RSSI resource.

[0238] ● A second frequency domain resource. The second frequency domain resource may be determined based on a second starting frequency domain unit and a second frequency domain resource width. Optionally, when the downlink subband indicated by the SBFD configuration information is non-consecutive (or includes two groups of consecutive PRBs), the second frequency domain resource is configured (or the second starting frequency domain unit and / or the second frequency domain resource width is configured). Optionally, when the downlink subband indicated by the SBFD configuration information includes (only) a consecutive part (or includes a group of consecutive PRBs), the second frequency domain resource is not configured (or the second starting frequency domain unit and / or the second frequency domain resource width is not configured). Such configuration restriction defines the configuration condition of the second frequency domain resource, which prevents the second frequency domain resource from being incorrectly configured and thus resulting in unclear UE behaviour, improving the reliability of the communication system.

[0239] ■ The second starting frequency domain unit (e.g., PRB). Optionally, the second starting frequency domain resource may be configured by the higher-layer parameter (e.g., startPRB2). Optionally, the second starting frequency domain unit may be the index of the starting frequency domain unit of the measurement bandwidth. Here, the measurement bandwidth may be the measurement bandwidth associated with / corresponding to the CLI-RSSI resource. Optionally, the second starting frequency domain unit is not in the uplink subband indicated by the SBFD configuration information. The second starting frequency domain unit is outside the uplink subband indicated by the SBFD configuration information. Optionally, the second starting frequency domain unit is in the downlink subband indicated by the SBFD configuration information. Since the CLI generated by the UE may affect downlink reception, the CLI needs to be measured in the downlink subband. Such configuration restriction prevents the starting point of the CLI-RSSI resource from occurring in the uplink subband, improving the reliability of the communication system.

[0240] ■ The second frequency domain resource width. Optionally, the second measurement bandwidth may be configured by the higher-layer parameter (e.g., nrofPRB2). This higher-layer parameter indicates the allowed size of the measurement bandwidth. For example, the parameter indicates the number of (consecutive) PRBs included in the second measurement bandwidth. For example, the parameter indicates the number of (consecutive) PRBs included in the second frequency domain resource width. Optionally, the second frequency domain resource width refers to the resource width of the CLI-RSSI resource, or the number of frequency domain units included in the CLI-RSSI resource, or (the number of) the frequency domain resources included in / occupied by the CLI-RSSI resource.

[0241] ● A starting time domain unit (e.g., symbol). Optionally, the starting time domain resource may be configured by the higher-layer parameter (e.g., startPosition). Optionally, the starting time domain unit may be the starting symbol in a slot. Here, the starting time domain unit may be for the CLI-RSSI resource. Optionally, the starting time domain unit is not in the uplink symbol indicated by the TDD configuration information. The first starting frequency domain unit is outside the uplink symbol indicated by the TDD configuration information. Optionally, the starting time domain unit is in the SBFD time domain resource indicated by the SBFD configuration information. Since the CLI generated by the UE may affect downlink reception, the CLI needs to be measured on the time domain resource where downlink reception may be performed. Such configuration restriction prevents the starting point of the CLI-RSSI time domain resource from occurring in the time domain resource for uplink, improving the reliability of the communication system.

[0242] ● A time period for measurement. In the disclosure, the term “time period for measurement” may be interchangeably used with the terms “the number of time domain units of the time period for measurement” or “the size of the time domain resource of the time period for measurement”. Optionally, the time period for measurement may be configured by the higher-layer parameter (e.g., nrofSymbols). For example, the parameter indicates the number of (consecutive) symbols included in the time period for measurement (in a slot). Optionally, the time period for measurement is for the CLI-RSSI resource. For example, in a slot, the CLI-RSSI resource is from the symbol associated with startPosition to the symbol associated with startPosition+nrofSymbols - 1. For example, the UE may perform measurement from the symbol associated with startPosition to the symbol associated with startPosition+nrofSymbols - 1.

[0243] ● A periodicity and / or offset. Optionally, the periodicity and / or offset may be configured by the higher-layer parameter (e.g., rssi-PeriodicityAndOffset). For example, the parameter indicates the periodicity and / or offset for the CLI-RSSI resource. Optionally, the unit of the periodicity and / or offset may be a slot. Optionally, the periodicity and / or offset is for periodic and / or semi-persistent CLI-RSSI resource.

[0244] ● A time domain offset. Optionally, the time domain offset may be configured by a higher-layer parameter. For example, the parameter indicates the time domain offset for the CLI-RSSI resource. Optionally, the unit of the time domain offset may be a slot. Optionally, the time domain offset is for aperiodic CLI-RSSI resource. Optionally, the time domain offset indicates the offset between the time domain unit where the triggering DCI is located and the time domain unit where the CLI-RSSI resource is located.

[0245] ● A serving cell. Optionally, the serving cell may be the reference serving cell. Optionally, the reference serving cell is the frequency reference point for determining the CLI-RSSI resource. Optionally, the serving cell may be configured by the higher-layer parameter (e.g., refServCelllndex). Optionally, the parameter indicates the index of the serving cell. Optionally, when the serving cell is not configured (or when the corresponding higher-layer parameter is not configured), the serving cell is a PCell or an SBFD cell.

[0246] ● Information for indicating a beam. Optionally, the information for indicating the beam may be configured by a higher-layer parameter. Optionally, when the CLI-RSSI resource is a periodic resource / semi-persistent resource, information for indicating the beam may be configured. Optionally, when the CLI-RSSI resource is an aperiodic resource, the information for indicating the beam is not configured. Using the information for indicating the beam to enable the UE and the base station to have the same understanding of the beam for the CLI-RSSI resource measurement, improving the reliability of the communication system is described below.

[0247] ■ Optionally, the information for indicating the beam may indicate a reference signal resource. Optionally, the UE measures / receives the CLI-RSSI resource based on the assumption that the reference signal resource and the CLI-RSSI resource are quasi co-located. Optionally, the UE measures / receives the CLI-RSSI resource based on the quasi co-location parameter of the reference signal resource. Optionally, the quasi co-location may be type D quasi co-location.

[0248] ■ Optionally, the information for indicating the beam may indicate a TCI state. Optionally, the TCI state may be a downlink TCI state or a joint TCI state. Optionally, the UE measures / receives the CLI-RSSI resource based on the TCI state. Optionally, the UE measures / receives the CLI-RSSI resource based on the quasi co-location parameter associated with the TCI state. Optionally, the quasi co-location may be type D quasi co-location.

[0249] ■ Optionally, the information for indicating the beam may indicate whether to use / apply the indicated TCI state. Optionally, if the information for indicating the beam indicates using / applying the indicated TCI state, the UE may use / apply the indicated TCI state to measure / receive the CLI-RSSI resource (or, the UE may use / apply the quasi co-location parameter associated with the indicated TCI state to measure / receive the CLI-RSSI resource). Optionally, if the information for indicating the beam indicates not using / not applying the indicated TCI state, the UE may not use / not apply the indicated TCI state to measure / receive the CLI-RSSI resource (or the UE may not use / not apply the quasi co-location parameter associated with the indicated TCI state to measure / receive the CLI-RSSI resource). Optionally, the quasi co-location may be type D quasi co-location. Refer below for description of the indicated TCI state.

[0250] How the UE measures the CLI-RSSI resource in time domain is discussed below. In time domain, the UE determines the slot where the (periodic and / or semi-persistent) CLI-RSSI resource is located based on the periodicity and / or offset configured by the CLI-RSSI resource configuration information. In time domain, the slot where the (periodic and / or semi-persistent) CLI-RSSI resource is located is determined based on the periodicity and / or offset configured by the CLI-RSSI resource configuration information. In time domain, the UE determines the slot where the (aperiodic) CLI-RSSI resource is located based on the time domain offset configured by the CLI-RSSI resource configuration information. In time domain, the slot where the (aperiodic) CLI-RSSI resource is located is determined based on the time domain offset configured by the CLI-RSSI resource configuration information. Optionally, if the UE may detect / receive DCI for triggering the aperiodic CLI-RSSI resource in slot n, the aperiodic CLI-RSSI resource is in slot n+k, where k represents the time domain offset. In a slot (for example, the slot where the CLI-RSSI resource is located), the symbol where the CLI-RSSI resource is located / occupied by the CLI-RSSI resource is determined based on the starting time domain unit configured by the CLI-RSSI resource configuration information and the time period for measurement. Optionally, for the semi-persistent CLI-RSSI resource, the UE starts measuring the CLI-RSSI resource after the signaling for activating the semi-persistent CLI-RSSI resource is applied. Optionally, for the semi-persistent CLI-RSSI resource, the UE stops measuring the CLI-RSSI resource after the signaling for deactivating the semi-persistent CLI-RSSI resource is applied. The signaling for activating / deactivating the semi-persistent CLI-RSSI resource may be higher-layer signaling (e.g. MAC-CE).

[0251] Optionally, the (periodic and / or semi-persistent and / or aperiodic) CLI-RSSI resource configured by the base station is in the SBFD time domain resource (the base station ensures that the configured (periodic and / or semi-persistent and / or aperiodic) CLI-RSSI resource is in the SBFD time domain resource). Optionally, the periodicity of the (periodic and / or semi-persistent and / or aperiodic) CLI-RSSI resource configured by the base station is the same as the periodicity of the SBFD time domain resource, or the periodicity of the (periodic and / or semi-persistent and / or aperiodic) CLI-RSSI resource configured by the base station and the periodicity of the SBFD time domain resource are in a integer multiple relation (the base station ensures that the periodicity of the (periodic and / or semi-persistent and / or aperiodic) CLI-RSSI resource is the same as the periodicity of the SBFD time domain resource, or the periodicity of the (periodic and / or semi-persistent and / or aperiodic) CLI-RSSI resource and the periodicity of the SBFD time domain resource are in a integer multiple relation). Such configuration restriction may ensure that the UE only performs measurement on (the occasion of) the CLI-RSSI resource in the SBFD time domain resource, avoiding the generation of inaccurate results by the UE performing measurement on the time domain resource other than the SBFD time domain resource without CLI and improving the reliability of the communication system.

[0252] Optionally, the UE performs measurement for (the occasion of) the CLI-RSSI resource (only) in the SBFD time domain resource. Optionally, the UE (only) measures (the occasion of) the CLI-RSSI resource in the SBFD time domain resource. The method may ensure that the UE only performs measurement on (the occasion of) the CLI-RSSI resource in the SBFD time domain resource, avoiding the generation of inaccurate results by the UE performing measurement on the time domain resource other than the SBFD time domain resource without CLI and improving the reliability of the communication system.

[0253] How the UE measures the CLI-RSSI resource in the frequency domain is discussed below. Optionally, the UE may determine the first frequency domain resource of the CLI-RSSI resource (or the frequency domain resource occupied by the CLI-RSSI resource) based on the first starting frequency domain unit and the first frequency domain resource width. Optionally, the first frequency domain resource of the CLI-RSSI resource (or the frequency domain resource occupied by the CLI-RSSI resource) may be determined based on the first starting frequency domain unit and the first frequency domain resource width. Optionally, the frequency domain reference point of the CLI-RSSI resource is determined based on at least one of the serving cell (e.g., the reference serving cell), and the SBFD configuration information. Optionally, the frequency domain reference point of the CLI-RSSI resource refers to the frequency domain reference point of the first starting frequency domain unit, or the frequency domain reference point of the first frequency domain resource. Optionally, the frequency domain reference point of the CLI-RSSI resource is the predefined CRB (e.g., CRB #0, CRB #1) of the serving cell (e.g., the reference serving cell). Optionally, the frequency domain reference point of the CLI-RSSI resource is the predefined subcarrier (e.g. subcarrier #0, subcarrier #1) of the predefined CRB (e.g. CRB #0) of the serving cell (e.g. the reference serving cell). Optionally, the frequency domain reference point of the CLI-RSSI resource is determined based on the downlink subband / the uplink subband indicated by the SBFD configuration information. Optionally, the frequency domain reference point of the CLI-RSSI resource is the predefined subcarrier (e.g., subcarrier #0, subcarrier #1) of the predefined CRB (e.g., the lowest / highest RB) of the downlink subband / the uplink subband indicated by the SBFD configuration information. Optionally, the UE determines the starting frequency domain unit based on the frequency domain unit of the frequency domain reference point and the indication of the higher-layer parameter associated with the starting frequency domain unit. Optionally, the starting frequency domain unit may be determined based on the frequency domain unit of the frequency domain reference point and the indication of the higher-layer parameter associated with the starting frequency domain unit. For example, if the frequency domain reference point is frequency domain unit #n and the higher-layer parameter indicates y, the starting frequency domain unit is frequency domain unit #n+y or frequency domain unit #n+y-1.

[0254] Optionally, the UE may determine the second frequency domain resource of the CLI-RSSI resource based on the second starting frequency domain unit and the second frequency domain resource width. Optionally, the second frequency domain resource of the CLI-RSSI resource may be determined based on the second starting frequency domain unit and the second frequency domain resource width. For example, the UE may determine the frequency domain resource occupied by the CLI-RSSI resource based on the second starting frequency domain unit and the second frequency domain resource width. For example, the frequency domain resource occupied by the CLI-RSSI resource may be determined based on the second starting frequency domain unit and the second frequency domain resource width. Optionally, the frequency domain reference point of the CLI-RSSI resource is determined based on one of the serving cell (e.g., the reference serving cell or the SBFD cell), the SBFD configuration information. Optionally, the frequency domain reference point of the CLI-RSSI resource refers to the frequency domain reference point of the second starting frequency domain unit, or the frequency domain reference point of the second frequency domain resource. Optionally, refer above for the method of determining the frequency domain reference point of the CLI-RSSI resource. Optionally, the frequency domain reference point of the CLI-RSSI resource / the second frequency domain resource may be determined based on the first frequency domain resource. For example, the frequency domain reference point of the second frequency domain resource may be based on / equal to the starting frequency domain unit / ending frequency domain unit of the first frequency domain resource. Optionally, when the downlink subband indicated by the SBFD configuration information include two downlink subbands (for example, include two downlink subbands composed of consecutive PRBs), the frequency domain reference point of the CLI-RSSI resource / the second frequency domain resource may be determined based on the downlink subband with the higher / lower frequency domain position where the frequency domain resource is located of these two downlink subbands. Here, the frequency domain position where the frequency domain resource is located being higher / lower refers the frequency domain position where the starting frequency domain unit (or the ending frequency domain unit) of the downlink subband being higher / lower.

[0255] The above method defines the method of determining the frequency domain reference point of the CLI-RSSI resource, so that the UE and the base station have the same understanding of the frequency domain reference point of the CLI-RSSI resource, improving the reliability of the communication system.

[0256] Optionally, the UE may determine the frequency domain resource of the CLI-RSSI resource based on the SBFD configuration information. Optionally, the frequency domain resource of the CLI-RSSI resource may be determined based on the SBFD configuration information. Optionally, in frequency domain, the UE may determine the CLI-RSSI resource based on the first frequency domain resource and the downlink subband / the uplink subband indicated by the SBFD configuration information and / or the downlink BWP. Optionally, in frequency domain, the CLI-RSSI resource may be determined based on the first frequency domain resource and the downlink subband / the uplink subband indicated by the SBFD configuration information and / or the downlink BWP. Optionally, the frequency domain resource of the CLI-RSSI resource (or the measurement bandwidth of the CLI-RSSI resource) is the intersection of the first frequency domain resource and the downlink subband / the uplink subband. Optionally, the frequency domain resource of the CLI-RSSI resource (or the measurement bandwidth of the CLI-RSSI resource) is the intersection of the first frequency domain resource and the downlink subband and the downlink BWP. Optionally, the frequency domain resource of the CLI-RSSI resource (or the measurement bandwidth of the CLI-RSSI resource) is the intersection of the first frequency domain resource and the uplink subband and the downlink BWP. Optionally, the UE may determine the CLI-RSSI resource (determine the measurement bandwidth of the CLI-RSSI resource) based on the frequency domain resource of the first frequency domain resource in the downlink subband indicated by the SBFD configuration information (and the downlink BWP). Optionally, the CLI-RSSI resource (or, the measurement bandwidth of the CLI-RSSI resource) may be determined based on the frequency domain resource of the first frequency domain resource in the downlink subband indicated by the SBFD configuration information (and the downlink BWP). For example, the CLI-RSSI resource (the measurement bandwidth of the CLI-RSSI resource) may be determined based on the frequency domain resource of the first frequency domain resource within the downlink BWP and in the downlink subband indicated by the SBFD configuration information. Optionally, the UE may determine the CLI-RSSI resource (determine the measurement bandwidth of the CLI-RSSI resource) based on the frequency domain resource excluding the frequency domain resource of the first frequency domain resource outside the downlink subband indicated by the SBFD configuration information (and the downlink BWP). Optionally, the CLI-RSSI resource (or, the measurement bandwidth of the CLI-RSSI resource) may be determined based on the frequency domain resource excluding the frequency domain resource of the first frequency domain resource outside the downlink subband indicated by the SBFD configuration information (and the downlink BWP). For example, the CLI-RSSI resource (the measurement bandwidth of the CLI-RSSI resource) may be determined based on the frequency domain resource of the first frequency domain resource within the downlink BWP and not outside the downlink subband indicated by the SBFD configuration information. Optionally, the UE may determine the CLI-RSSI resource (determine the measurement bandwidth of the CLI-RSSI resource) based on the frequency domain resource of the first frequency domain resource outside the uplink subband indicated by the SBFD configuration information (and the downlink BWP). Optionally, the CLI-RSSI resource (or the measurement bandwidth of the CLI-RSSI resource) may be determined based on the frequency domain resources of the first frequency domain resource outside the uplink subband indicated by the SBFD configuration information (and the downlink BWP). For example, the CLI-RSSI resource (measurement bandwidth of the CLI-RSSI resource) may be determined based on the frequency domain resource of the first frequency domain resource within the downlink BWP and outside the uplink subband indicated by the SBFD configuration information. A variant of the above method is to ensure by the base station that the first frequency domain resource is in the downlink subband and / or the downlink BWP. Optionally, the first frequency domain resource is in the downlink subband indicated by the SBFD configuration information and / or the downlink BWP (of the SBFD cell). Optionally, the UE expects the first frequency domain resource to be in the downlink subband indicated by the SBFD configuration information and / or the downlink BWP. Here, the downlink BWP may be the active BWP (of the serving cell or the SBFD cell). The method enables the UE to perform CLI measurement only in the SBFD downlink subband, avoiding the generation of incorrect results due to the measurement by the UE in the frequency domain resource outside the downlink subband (CLI cannot be measured through the CLI-RSSI resource in the frequency domain resource outside the downlink subband), improving the reliability of the communication system.

[0257] Optionally, in frequency domain, the UE may determine the CLI-RSSI resource based on the first frequency domain resource and the second frequency domain resource. Optionally, in frequency domain, the CLI-RSSI resource may be determined based on the first frequency domain resource and the second frequency domain resource. Optionally, the UE may determine the CLI-RSSI resource based on the first starting frequency domain unit and the first frequency domain resource width and the second starting frequency domain unit and the second frequency domain resource width. Optionally, the CLI-RSSI resource may be determined based on the first starting frequency domain unit and the first frequency domain resource width and the second starting frequency domain unit and the second frequency domain resource width. Optionally, in frequency domain, the CLI-RSSI resource includes the first frequency domain resource and the second frequency domain resource. Optionally, the UE determines that the CLI-RSSI resource is the union of the first frequency domain resource and the second frequency domain resource. Optionally, the CLI-RSSI resource may be the union of the first frequency domain resource and the second frequency domain resource. Optionally, the first frequency domain resource and the second frequency domain resource are non-overlapping. Optionally, the first frequency domain resource and the second frequency domain resource are non-consecutive. Optionally, the first frequency domain resource is in the downlink subband indicated by the SBFD configuration information and / or the downlink BWP (of the SBFD cell). Optionally, the second frequency domain resource is in the downlink subband indicated by the SBFD configuration information and / or the downlink BWP. Optionally, the UE expects the first frequency domain resource and / or the second frequency domain resource to be in the downlink subband indicated by the SBFD configuration information and / or the downlink BWP. Here, the downlink BWP may be the active BWP (of the serving cell or the SBFD cell). The method enables the UE to perform CLI measurement in non-consecutive SBFD downlink subbands through multiple consecutive resources, improving the flexibility of the communication system.

[0258] The configuration method of a CLI-RSSI resource set is discussed below. Optionally, a CLI-RSSI resource set may include / be associated with one or more CLI-RSSI resources. Optionally, a CLI-RSSI resource set may be configured by CLI-RSSI resource set configuration information. Optionally, the CSI reporting configuration may be associated with one or more CLI-RSSI resource sets. Optionally, the CSI reporting configuration may be associated with one or more CLI-RSSI resource sets for interference measurement and / or reporting. Optionally, the CSI reporting configuration may be associated with one or more CLI-RSSI resource sets and interference measurement and / or reporting is performed based on the CLI-RSSI resources in the one or more CLI-RSSI resource sets. For example, the CSI reporting configuration may be associated with / include / refer / indicate one or more CLI-RSSI resource set configuration information. For example, the CSI reporting configuration may be associated with / include / refer / indicate one or more CLI-RSSI resource set IDs. A CLI-RSSI resource set configuration information may include / configure / indicate at least one of the followings:

[0259] ● A resource set ID. Optionally, the ID is used for identifying the CLI-RSSI resource set. Optionally, the resource ID may be configured by a higher-layer parameter.

[0260] ● One or more CLI-RSSI resources. Optionally, the one or more CLI-RSSI resources are resources associated with / included in the CLI-RSSI resource set. Optionally, the one or more CLI-RSSI resources may be configured by a higher-layer parameter. Optionally, the higher-layer parameter may configure the IDs of the one or more CLI-RSSI resources to be associated with the CLI-RSSI resource set.

[0261] ● Information for indicating a beam. Optionally, the information for indicating the beam may be configured by a higher-layer parameter. Optionally, when the CLI-RSSI resource is a periodic resource / semi-persistent resource, the information for indicating the beam may be configured. Optionally, when the CLI-RSSI resource is an aperiodic resource, the information for indicating the beam is not configured. Using the information for indicating the beam may enable the UE and the base station to have the same understanding of the beam for the CLI-RSSI resource measurement, improving the reliability of the communication system. The following description of the CLI-RSSI resource is applicable to each CLI-RSSI resource in the CLI-RSSI resource set.

[0262] ■ Optionally, the information for indicating the beam may indicate a reference signal resource. Optionally, the UE measures / receives the CLI-RSSI resource based on the assumption that the reference signal resource and the CLI-RSSI resource are quasi co-located. Optionally, the UE measures / receives the CLI-RSSI resource based on the quasi co-location parameter of the reference signal resource. Optionally, the quasi co-location may be type D quasi co-location.

[0263] ■ Optionally, the information for indicating the beam may indicate a TCI state. Optionally, the TCI state may be a downlink TCI state or a joint TCI state. Optionally, the UE measures / receives the CLI-RSSI resource based on the TCI state. Optionally, the UE measures / receives the CLI-RSSI resource based on the quasi co-location parameter associated with the TCI state. Optionally, the quasi co-location may be type D quasi co-location.

[0264] ■ Optionally, the information for indicating the beam may indicate whether to use / apply the indicated TCI state. Optionally, if the information for indicating the beam indicates using / applying the indicated TCI state, the UE may use / apply the indicated TCI state to measure / receive the CLI-RSSI resource (or, the UE may use / apply the quasi co-location parameter associated with the indicated TCI state to measure / receive the CLI-RSSI resource, or the measurement / reception of the CLI-RSSI resource is determined based on the quasi co-location parameter associated with the indicated TCI state). Optionally, if the information for indicating the beam indicates not using / not applying the indicated TCI state, the UE may not use / not apply the indicated TCI state to measure / receive the CLI-RSSI resource (or, the UE may not use / not apply the quasi co-location parameter associated with the indicated TCI state to measure / receive the CLI-RSSI resource, or the measurement / reception of the CLI-RSSI resource is not determined based on the quasi co-location parameter associated with the indicated TCI state). Optionally, the quasi co-location may be type D quasi co-location. Refer below for description of the indicated TCI state.

[0265] ● A time domain offset. Optionally, the time domain offset may be configured by a higher-layer parameter. For example, the parameter indicates the time domain offset for the CLI-RSSI resource. Optionally, the unit of the time domain offset may be a slot. Optionally, the time domain offset is for aperiodic CLI-RSSI resource. Optionally, the time domain offset indicates the offset between the time domain unit where the triggering DCI is located the time domain unit where the CLI-RSSI resource is located. In time domain, the UE determines the slot where the (aperiodic) CLI-RSSI resource is located based on the time domain offset configured by the CLI-RSSI resource set configuration information. In time domain, the slot where the (aperiodic) CLI-RSSI resource is located is determined based on the time domain offset configured by the CLI-RSSI resource set configuration information. Optionally, if the UE may detect / receive DCI for triggering the aperiodic CLI-RSSI resource in slot n, the aperiodic CLI-RSSI resource is in slot n+k, where k represents the time domain offset. The above behaviour associated with the time domain offset of the CLI-RSSI resource is applicable to each CLI-RSSI resource in the CLI-RSSI resource set.

[0266] The configuration method of the SRS-RSRP resource is discussed below. Optionally, the CSI reporting configuration may be associated with one or more SRS-RSRP resources. Optionally, the CSI reporting configuration may be associated with one or more SRS-RSRP resources for interference measurement and / or reporting. For example, the CSI reporting configuration may be associated with / include / refer / indicate one or more SRS-RSRP resource configuration information. For example, the CSI reporting configuration may be associated with / include / refer / indicate one or more SRS-RSRP resource IDs. An SRS-RSRP resource configuration information may include / configure / indicate at least one of the followings:

[0267] ● An SRS-RSRP resource ID. Optionally, the ID is used for identifying the SRS-RSRP resource. Optionally, the resource ID may be configured by a higher-layer parameter. Optionally, the resource ID may be determined based on the ID of the SRS resource associated with the SRS-RSRP resource. For example, the resource ID is equal to the ID of the SRS resource associated with the SRS-RSRP resource. For example, the resource ID is equal to the summation of the ID of the SRS resource associated with the SRS-RSRP resource and Kid,offset, where Kid,offsetmay be predefined (e.g., one of 1, 2, 3, 4) or indicated by the base station or based on the UE capability.

[0268] ● A subcarrier spacing. Optionally, the subcarrier spacing may be configured by a higher-layer parameter (srs-SCS). Optionally, the subcarrier spacing may be the subcarrier spacing of the SRS-RSRP resource. Optionally, the subcarrier spacing may be the subcarrier spacing of the SRS resource associated with the SRS-RSRP resource. Optionally, the UE determines to measure the SRS-RSRP resource based on the subcarrier spacing of the SRS-RSRP resource and the subcarrier spacing of the downlink active BWP (for measuring the SRS-RSRP resource), or determines not to measure the SRS-RSRP resource. Optionally, whether the SRS-RSRP resource is measured is determined based on the subcarrier spacing of the SRS-RSRP resource and the subcarrier spacing of the downlink active BWP (for measuring the SRS-RSRP resource). Optionally, if the subcarrier spacing of the SRS-RSRP resource is the same as the subcarrier spacing of the downlink active BWP, the UE may measure the SRS-RSRP resource. Optionally, if the subcarrier spacing of the SRS-RSRP resource is different from the subcarrier spacing of the downlink active BWP, the UE does not measure the SRS-RSRP resource.

[0269] ● A BWP. Optionally, the BWP may be the reference BWP. Optionally, the BWP may be the frequency reference point for determining the SRS-RSRP resource. Optionally, the BWP may be configured by a higher-layer parameter (e.g., refServCelllndex). Optionally, the parameter indicates the index of the BWP. Optionally, when the BWP is not configured (or when the higher-layer parameter is not configured), the BWP is a predefined BWP (for example, BWP #0, or the BWP with the smallest ID).

[0270] ● A serving cell. Optionally, the serving cell may be the reference serving cell. Optionally, the serving cell may be used for determining the serving cell to which the BWP belongs. Optionally, the serving cell may be the frequency reference point for determining the SRS-RSRP resource. Optionally, the serving cell may be configured by a higher-layer parameter (e.g., refServCelllndex). Optionally, the parameter indicates the index of the serving cell. Optionally, when the serving cell is not configured (or when the higher-layer parameter is not configured), the serving cell is a PCell or an SBFD cell.

[0271] ● An SRS resource (for uplink channel transmission). Optionally, the SRS resource may be the SRS resource associated with the SRS-RSRP resource. Optionally, the UE performs measurement on the SRS resource. Optionally, the SRS resource may be configured by a higher-layer parameter (e.g., srs-Resource). Optionally, the configuration information of the SRS resource may indicate at least one of the ID of the SRS resource, the time domain behaviour of the SRS resource, the frequency domain location of the SRS resource and / or the frequency domain offset (e.g., the higher-layer parameters freqDomainPosition and / or freqDomainShift). Optionally, the time domain behaviour of the SRS-RSRP resource associated with the SRS resource is determined based on the time domain behaviour of the SRS resource. For example, if the configuration information of the SRS resource indicates that the SRS resource is an aperiodic resource, the SRS-RSRP resource associated with the SRS resource is also an aperiodic resource. Optionally, the frequency domain resource of the SRS-RSRP resource associated with the SRS resource is determined based on the frequency domain resource of the SRS resource. For example, the frequency domain resource of the SRS-RSRP resource is based on / equal to the frequency domain resource of the SRS resource associated with the SRS-RSRP resource. Optionally, the time domain resource of the SRS-RSRP resource associated with the SRS resource is determined based on the time domain resource of the SRS resource. For example, the time domain resource of the SRS-RSRP resource is based on / equal to the time domain resource of the SRS resource associated with the SRS-RSRP resource.

[0272] ● A time domain offset. Optionally, the time domain offset may be configured by higher-layer signaling. Optionally, the time domain offset indicates the offset of the time domain units between the triggering DCI and the SRS-RSRP resource. Optionally, the unit of the time domain offset may be a slot. Optionally, the time domain offset is for aperiodic SRS-RSRP resource.

[0273] ● Information for indicating a beam. Optionally, the information for indicating the beam may be configured by a higher-layer parameter. Optionally, when the SRS-RSRP resource is a periodic resource / semi-persistent resource, the information for indicating the beam may be configured. Optionally, when the SRS-RSRP resource is an aperiodic resource, the information for indicating the beam is not configured. Using the information for indicating the beam to enable the UE and the base station to have the same understanding of the beam for the SRS-RSRP resource measurement, improving the reliability of the communication system is described below.

[0274] ■ Optionally, the information for indicating the beam may indicate a reference signal resource. Optionally, the UE measures / receives the SRS-RSRP resource based on the assumption that the reference signal resource and the SRS-RSRP resource are quasi co-located. Optionally, the reception / measurement of the SRS-RSRP resource is determined based on the assumption that the reference signal resource and the SRS-RSRP resource are quasi co-located. Optionally, the UE measures / receives the SRS-RSRP resource based on the quasi co-location parameter of the reference signal resource. Optionally, the reception / measurement of the SRS-RSRP resource is determined based on the quasi co-location parameter of the reference signal resource. Optionally, the quasi co-location may be type D quasi co-location.

[0275] ■ Optionally, the information for indicating the beam may indicate a TCI state. Optionally, the TCI state may be a downlink TCI state or a joint TCI state. Optionally, the UE measures / receives the SRS-RSRP resource based on the TCI state. Optionally, the measurement / reception of the SRS-RSRP resources is determined based on the TCI state. Optionally, the UE measures / receives the SRS-RSRP resource based on the quasi co-location parameter associated with the TCI state. Optionally, the measurement / reception of the SRS-RSRP resources is determined based on the quasi co-location parameter associated with the TCI state. Optionally, the quasi co-location may be type D quasi co-location.

[0276] ■ Optionally, the information for indicating the beam may indicate whether to use / apply the indicated TCI state. Optionally, if the information for indicating the beam indicates using / applying the indicated TCI state, the UE may use / apply the indicated TCI state to measure / receive the SRS-RSRP resource (or, the UE may use / apply the quasi co-location parameter associated with the indicated TCI state to measure / receive the SRS-RSRP resource, or the quasi co-location parameter for the measurement / reception of the SRS-RSRP resources is determined based on the quasi co-location parameter associated with the indicated TCI state). Optionally, if the information for indicating the beam indicates not using / not applying the indicated TCI state, the UE may not use / not apply the indicated TCI state to measure / receive the SRS-RSRP resource (or the UE may not use / not apply the quasi co-location parameter associated with the indicated TCI state to measure / receive the SRS-RSRP resource). Optionally, the quasi co-location may be type D quasi co-location. Refer below for description of the indicated TCI state.

[0277] Since SRS-based CLI measurement needs to rely on the uplink SRS transmission of other UE(s), these SRS resources are usually in the uplink subband in the SBFD time domain resource or the uplink symbol / uplink slot indicated / configured by the base station. Therefore, the UE needs to perform measurement on the SRS-RSRP resource in the corresponding resource.

[0278] How the UE performs measurement on the SRS-RSRP resource in time domain is discussed below. In time domain, the UE determines the time domain resource where the SRS-RSRP resource is located based on the SRS-RSRP resource configuration information. Optionally, the UE determines the slot where the corresponding SRS-RSRP resource is located based on the time domain offset. In time domain, the time domain resource where the SRS-RSRP resource is located is determined based on the SRS-RSRP resource configuration information. Optionally, the slot where the SRS-RSRP resource is located is determined based on the corresponding time domain offset. For example, the UE receives / detects DCI in slot n, where the DCI triggers an SRS-RSRP resource, and the slot offset associated with the SRS-RSRP resource is x, the UE measures the SRS-RSRP resource triggered by the DCI in slot n+x.

[0279] Optionally, the (periodic and / or semi-persistent and / or aperiodic) SRS-RSRP resource configured by the base station is in the SBFD time domain resource and / or the uplink slot / the uplink symbol indicated / configured by the base station (the base station ensures that the configured (periodic and / or semi-persistent and / or aperiodic) SRS-RSRP resource is in the SBFD time domain resource and / or the uplink slot / the uplink symbol indicated / configured by the base station). The method may ensure that the SRS-RSRP resource only occurs in the time domain resource where the SRS uplink transmission may be performed, avoiding the inaccuracy of the measurement results caused by the UE performing measurement on the time domain resource where the SRS resource cannot be transmitted, and improving the reliability of the communication system.

[0280] Optionally, the UE performs measurement for (the occasion of) the SRS-RSRP resource (only) in the SBFD time domain resource and / or the uplink slot / the uplink symbol indicated / configured by the base station. Optionally, the UE measures (only) (the occasion of) the SRS-RSRP resource in the SBFD time domain resource and / or the uplink slot / the uplink symbol indicated / configured by the base station. The method may ensure that the UE performs measurement on the SBFD time domain resource and / or the CLI-RSSI resource in the uplink symbol / the uplink slot indicated by the base station, avoiding the inaccuracy of the measurement results caused by the UE performing measurement on the time domain resource where the SRS resource cannot be transmitted, and improving the reliability of the communication system.

[0281] How the UE performs measurement on the SRS-RSRP resource in frequency domain is discussed below. Optionally, the UE may determine the frequency domain reference point of the SRS-RSRP resource based on the serving cell and BWP indicated by the SRS-RSRP resource configuration information. Optionally, the frequency domain reference point of the SRS-RSRP resource may be determined based on the serving cell and BWP indicated by the SRS-RSRP resource configuration information. Optionally, the UE may determine the frequency domain reference point of the SRS-RSRP resource based on the SBFD resource configuration information. Optionally, the frequency domain reference point of the SRS-RSRP resource may be determined based on the SBFD resource configuration information. Optionally, the UE may determine the frequency domain reference point of the SRS-RSRP resource based on the uplink subband / the downlink subband indicated by the SBFD resource configuration information. Optionally, the frequency domain reference point of the SRS-RSRP resource may be determined based on the uplink subband / the downlink subband indicated by the SBFD resource configuration information. Optionally, the UE may determine the frequency domain reference point of the SRS-RSRP resource based on the lowest / highest frequency domain unit (for example, subcarrier or RB) of the uplink subband / the downlink subband indicated by the SBFD resource configuration information. Optionally, the frequency domain reference point of the SRS-RSRP resource may be determined based on the lowest / highest frequency domain unit (for example, subcarrier or RB) of the uplink subband / the downlink subband indicated by the SBFD resource configuration information. The above method defines the method of determining the frequency domain reference point of the SRS-RSRP resource, so that the UE and the base station have the same understanding of the frequency domain reference point of the SRS-RSRP resource, improving the reliability of the communication system.

[0282] Optionally, the SRS-RSRP resource is determined in frequency domain based on the SRS resource associated with the SRS-RSRP resource. For example, the UE determines the frequency domain resource of the SRS-RSRP resource based on the configuration information of the SRS resource associated with the SRS-RSRP resource (e.g., the frequency domain location and / or frequency domain offset of the SRS resource indicated by the configuration information of the SRS resource). For example, the frequency domain resource of the SRS-RSRP resource is determined based on the configuration information of the SRS resource associated with the SRS-RSRP resource (e.g., the frequency domain location and / or frequency domain offset of the SRS resource indicated by the configuration information of the SRS resource). For example, the frequency domain resource associated with the SRS-RSRP resource is the same as the frequency domain resource of the SRS resource associated with the SRS-RSRP resource. Optionally, the frequency domain resource determined based on the SRS-RSRP resource configuration information (or, based on the configuration information of the SRS resource associated with the SRS-RSRP resource configuration information) may be called a third frequency domain resource.

[0283] Optionally, the UE may determine the frequency domain resource of the SRS-RSRP resource based on the SBFD configuration information. Optionally, the frequency domain resource of the SRS-RSRP resource may be determined based on the SBFD configuration information. Optionally, in frequency domain, the UE may determine (the frequency domain resource / measurement bandwidth of) the SRS-RSRP resource based on the third frequency domain resource and the downlink subband / the uplink subband indicated by the SBFD configuration information and / or the downlink BWP. Optionally, in frequency domain, (the frequency domain resource / measurement bandwidth of) the SRS-RSRP resource may be determined based on the third frequency domain resource and the downlink subband / the uplink subband indicated by the SBFD configuration information and / or the downlink BWP. Optionally, the frequency domain resource of the SRS-RSRP resource (or the measurement bandwidth of the SRS-RSRP resource) is the intersection of the third frequency domain resource and the downlink subband / the uplink subband. Optionally, the frequency domain resource of the SRS-RSRP resource (or the measurement bandwidth of the SRS-RSRP resource) is based on the intersection of the third frequency domain resource and the uplink subband. Optionally, the frequency domain resource of the SRS-RSRP resource (or the measurement bandwidth of the SRS-RSRP resource) is the intersection of the third frequency domain resource and the uplink subband and the downlink BWP. Optionally, the frequency domain resource of the SRS-RSRP resource (or the measurement bandwidth of the SRS-RSRP resource) is based on the intersection of the third frequency domain resource and the downlink subband. Optionally, the frequency domain resource of the SRS-RSRP resource (or the measurement bandwidth of the SRS-RSRP resource) is the intersection of the third frequency domain resource and the downlink subband and the downlink BWP. Optionally, the UE may determine (the frequency domain resource / measurement bandwidth of) the SRS-RSRP resource based on the frequency domain resource of the third frequency domain resource in the downlink subband / the uplink subband indicated by the SBFD configuration information (and the downlink BWP). Optionally, (the frequency domain resource / measurement bandwidth of) the SRS-RSRP resource may be determined based on the frequency domain resource of the third frequency domain resource in the downlink subband / the uplink subband indicated by the SBFD configuration information (and the downlink BWP). For example, the SRS-RSRP resource (the measurement bandwidth of the SRS-RSRP resource) may be determined based on the frequency domain resource of the third frequency domain resource within the downlink BWP and in the uplink subband indicated by the SBFD configuration information. Optionally, the UE may determine (the frequency domain resource / measurement bandwidth of) the SRS-RSRP resource based on the frequency domain resource excluding the frequency domain resource of the third frequency domain resource outside the downlink subband / the uplink subband indicated by the SBFD configuration information (and the downlink BWP). Optionally, (the frequency domain resource / measurement bandwidth of) the SRS-RSRP resource may be determined based on the frequency domain resource excluding the frequency domain resource of the third frequency domain resource outside the downlink subband / the uplink subband indicated by the SBFD configuration information (and the downlink BWP). For example, the SRS-RSRP resource (measurement bandwidth of the SRS-RSRP resource) may be determined based on the frequency domain resource of the third frequency domain resource within the downlink BWP and not outside the uplink subband indicated by the SBFD configuration information. Optionally, the UE may determine (the frequency domain resource / measurement bandwidth of) the SRS-RSRP resource based on the frequency domain resource of the third frequency domain resource outside the downlink subband / the uplink subband indicated by the SBFD configuration information (and the downlink BWP). Optionally, (the frequency domain resource / measurement bandwidth of) the SRS-RSRP resource may be determined based on the frequency domain resource of the third frequency domain resource outside the downlink subband / the uplink subband indicated by the SBFD configuration information (and the downlink BWP). For example, the SRS-RSRP resource (the measurement bandwidth of the SRS-RSRP resource) may be determined based on the frequency domain resource of the third frequency domain resource within the downlink BWP and outside the downlink subband indicated by the SBFD configuration information. A variant of the above method is to ensure by the base station that the third frequency domain resource is in the downlink subband and / or the downlink BWP. Optionally, the third frequency domain resource is in the downlink subband indicated by the SBFD configuration information and / or the downlink BWP (of the SBFD cell). Optionally, the UE expects the third frequency domain resource to be in the downlink subband indicated by the SBFD configuration information and / or the downlink BWP. Optionally, the third frequency domain resource is in the uplink subband indicated by the SBFD configuration information and / or the downlink BWP (of the SBFD cell). Optionally, the UE expects the third frequency domain resource to be in the uplink subband indicated by the SBFD configuration information and / or the downlink BWP. Here, the downlink BWP may be the active BWP (of the serving cell or the SBFD cell). The method allows the UE to perform measurement of the SRS only in the uplink subband of SBFD, avoiding the generation of inaccurate results by the UE performing measurement on the frequency domain resource other than the uplink subband where the SRS is not transmitted and improving the reliability of the communication system.

[0284] The configuration method of the SRS-RSRP resource set is discussed below. Optionally, an SRS-RSRP resource set may include / be associated with one or more SRS-RSRP resources. Optionally, an SRS-RSRP resource set may be configured by SRS-RSRP resource set configuration information. Optionally, the CSI reporting configuration may be associated with one or more SRS-RSRP resource sets. Optionally, the CSI reporting configuration may be associated with one or more SRS-RSRP resource sets for interference measurement and / or reporting. Optionally, the CSI reporting configuration may be associated with one or more SRS-RSRP resource sets and the interference measurement and / or reporting is performed based on the SRS-RSRP resources in the one or more SRS-RSRP resource sets. For example, the CSI reporting configuration may be associated with / include / refer / indicate one or more SRS-RSRP resource set configuration information. For example, the CSI reporting configuration may be associated with / include / refer / indicate one or more SRS-RSRP resource set IDs. An SRS-RSRP resource set configuration information may include / configure / indicate at least one of the followings:

[0285] ● A resource set ID. Optionally, the ID is used for identifying the SRS-RSRP resource set. Optionally, the resource ID may be configured by a higher-layer parameter.

[0286] ● One or more SRS-RSRP resources. Optionally, the one or more SRS-RSRP resources are resources associated with / included in the SRS-RSRP resource set. Optionally, the one or more SRS-RSRP resources may be configured by a higher-layer parameter. Optionally, the higher-layer parameter may configure the IDs of one or more SRS-RSRP resources to be associated with the SRS-RSRP resource set.

[0287] ● Information for indicating a beam. Optionally, the information for indicating the beam may be configured by a higher-layer parameter. Optionally, when the SRS-RSRP resource is a periodic resource / semi-persistent resource, the information for indicating the beam may be configured. Optionally, when the SRS-RSRP resource is an aperiodic resource, the information for indicating the beam is not configured. Using the information for indicating the beam may enable the UE and the base station to have the same understanding of the beam for the SRS-RSRP resource measurement, improving the reliability of the communication system. The following description of the SRS-RSRP resource is applicable to each SRS-RSRP resource in the SRS-RSRP resource set.

[0288] ■ Optionally, the information for indicating the beam may indicate a reference signal resource. Optionally, the UE measures / receives the SRS-RSRP resource based on the assumption that the reference signal resource and the SRS-RSRP resource are quasi co-located. Optionally, the measurement / reception of the SRS-RSRP resource is determined based on the assumption that the reference signal resource and the SRS-RSRP resource are quasi co-located. Optionally, the UE measures / receives the SRS-RSRP resource based on the quasi co-location parameter of the reference signal resource. Optionally, the measurement / reception of the SRS-RSRP resources is determined based on the quasi co-location parameter of the reference signal resource. Optionally, the quasi co-location may be type D quasi co-location.

[0289] ■ Optionally, the information for indicating the beam may indicate a TCI state. Optionally, the TCI state may be a downlink TCI state or a joint TCI state. Optionally, the UE measures / receives the SRS-RSRP resource based on the TCI state. Optionally, the measurement / reception of the SRS-RSRP resources is determined based on the TCI state. Optionally, the UE measures / receives the SRS-RSRP resource based on the quasi co-location parameter associated with the TCI state. Optionally, the measurement / reception of the SRS-RSRP resources is determined based on the quasi co-location parameter associated with the TCI state. Optionally, the quasi co-location may be type D quasi co-location.

[0290] ■ Optionally, the information for indicating the beam may indicate whether to use / apply the indicated TCI state. Optionally, if the information for indicating the beam indicates using / applying the indicated TCI state, the UE may use / apply the indicated TCI state to measure / receive the SRS-RSRP resource (or, the UE may use / apply the quasi co-location parameter associated with the indicated TCI state to measure / receive the SRS-RSRP resource, or the measurement / reception of the SRS-RSRP resources may be determined based on the quasi co-location parameter associated with the indicated TCI state). Optionally, if the information for indicating the beam indicates not using / not applying the indicated TCI state, the UE may not use / not apply the indicated TCI state to measure / receive the SRS-RSRP resource (or, the UE may not use / not apply the quasi co-location parameter associated with the indicated TCI state to measure / receive the SRS-RSRP resource, or the measurement / reception of the SRS-RSRP resources may / may not be determined based on the quasi co-location parameter associated with the indicated TCI state). Optionally, the quasi co-location may be type D quasi co-location. Refer below for description of the indicated TCI state.

[0291] ● A time domain offset. Optionally, the time domain offset may be configured by a higher-layer parameter. For example, the parameter indicates the time domain offset for the SRS-RSRP resource. Optionally, the unit of the time domain offset may be a slot. Optionally, the time domain offset is for aperiodic SRS-RSRP resource. Optionally, the time domain offset indicates the offset of the time domain units between the triggering DCI and the SRS-RSRP resource. In time domain, the UE determines the slot where the (aperiodic) SRS-RSRP resource is located based on the time domain offset configured by the SRS-RSRP resource set configuration information. In time domain, the slot where the (aperiodic) SRS-RSRP resource is located is determined based on the time domain offset configured by the SRS-RSRP resource set configuration information. Optionally, if the UE may detect / receive DCI for triggering the aperiodic SRS-RSRP resource in slot n, the aperiodic SRS-RSRP resource is in slot n+k, where k represents the time domain offset. The above behaviour associated with the time domain offset of the SRS-RSRP resource is applicable to each SRS-RSRP resource in the SRS-RSRP resource set.

[0292] Optionally, the CSI reporting configuration may indicate / configure / be associated with / corresponds to at least one of the followings: a first resource set, a second resource set. In the disclosure, the term “first resource set” may be used interchangeably with the term “first resource list”. In the disclosure, the term “second resource set” may be used interchangeably with the term “second resource list”. Optionally, the CSI reporting configuration may indicate / configure / be associated with / corresponds to at least one of the followings: K1 (K1 1) CLI-RSSI resources, and / or K2 (K2 1) SRS-RSRP resources. Optionally, the first resource set may be for interference measurement (e.g., CLI measurement). Optionally, the first resource set may be configured by a higher-layer parameter. Optionally, the resources in the first resource set may be SRS-RSRP resources or CLI-RSSI resources. In the disclosure, it is described by taking the first resource set including CLI-RSSI resources as an example, but the disclosure is not limited thereto. Optionally, the first resource set may be associated with K1 (K1 1) resources.

[0293] ● Optionally, the K1 resources may be (all) the resources in the first resource set. For example, the first resource set includes K1 resources.

[0294] Optionally, the K1 resources may be the K1 resources in the first resource set determined based on the base station indication. Optionally, the K1 resources are a subset of the first resource set indicated by the base station. Optionally, the base station indication may be at least one of DCI indication, MAC-CE indication, and higher-layer signaling indication.

[0295] ● Optionally, the K1 resources may be the K1 resources in the first resource set determined based on the indicated TCI state. Optionally, (based on the indication / configuration of the base station,) one or more subsets (each subset) of the first resource set may each be associated with a TCI state. Optionally, the resources in the subset corresponding to the TCI state same as the indicated TCI state are the K1 resources (associated with the first resource set). For example, the first resource set includes {CLI-RSSI resource #1, CLI-RSSI resource #2, CLI-RSSI resource #3}, where CLI-RSSI resource #1 is associated with TCI state #1, and CLI-RSSI resource #2 and CLI-RSSI resource #3 are associated with TCI state #2. When the indicated TCI state is TCI #state 2, the K1 resources associated with the first resource set are CLI-RSSI resource #2 and CLI-RSSI resource #3. Here, refer below for description of the indicated TCI state.

[0296] Optionally, the second resource set may be for interference measurement (e.g., CLI measurement). Optionally, the second resource set may be configured by a higher-layer parameter. Optionally, the resources in the second resource set may be SRS-RSRP resources or CLI-RSSI resources. In the disclosure, it is described by taking the second resource set including SRS-RSRP resources as an example, but the disclosure is not limited thereto. Optionally, the second resource set may be associated with K2 (K2 1) resources.

[0297] ● Optionally, the K2 resources may be (all) the resources in the second resource set. For example, the second resource set includes K2 resources.

[0298] ● Optionally, the K2 resources may be the K2 resources in the second resource set determined based on the base station indication. Optionally, the K2 resources are a subset of the second resource set indicated by the base station. Optionally, the base station indication may be at least one of DCI indication, MAC-CE indication, and higher-layer signaling indication.

[0299] ● Optionally, the K2 resources may be the K2 resources in the second resource set determined based on the indicated TCI state. Optionally, (based on indication / configuration of the base station) one or more subsets of the second resource set may each be associated with a TCI state. Optionally, the resources in the subset corresponding to the TCI state same as the indicated TCI state are the K2 resources (associated with the second resource set). For example, the second resource set includes {SRS-RSRP resource #1, SRS-RSRP resource #2, SRS-RSRP resource #3}, where SRS-RSRP resource #1 is associated with TCI state #1, and SRS-RSRP resource #2 and SRS-RSRP resource #3 are associated with TCI state #2. When the indicated TCI state is TCI #state 2, the K2 resources associated with the second resource set are SRS-RSRP resource #2 and SRS-RSRP resource #3. Here, refer below for description of the indicated TCI state.

[0300] The indicated TCI state is discussed below. Optionally, the UE may obtain the indicated TCI state (from the base station). Optionally, the UE may be configured with the higher-layer parameter associated with the TCI state (e.g., dl-OrJointTCI-StateList). Optionally, the higher-layer parameter associated with the TCI state (e.g., dl-OrJointTCI-StateList) may be in the higher-layer parameter PDSCH-Config. Optionally, the higher-layer parameter associated with the TCI state (e.g., dl-OrJointTCI-StateList) is used for providing a reference signal for the quasi co-location for DM-RS of PDSCH and DM-RS of PDCCH in a BWP / CC, for CSI-RS, and to provide a reference, if applicable, for determining uplink transit spatial filter. Optionally, the uplink transmit spatial filter may be for dynamic-grant and configured-grant based PUSCH and PUCCH resource, and SRS. Optionally, the UE receives / applies the indication of the TCI state. Optionally, the UE receives / applies / has the indicated TCI state. Optionally, the UE applies / uses the indicated TCI state after receiving TCI state indication information.

[0301] How the UE measures the resource for the CLI measurement based on the indicated TCI state (or how the UE determines the beam of the resource for the CLI measurement based on the indicated TCI state) is discussed below. Optionally, the UE measures the resource for the CLI measurement based on the (obtained) indicated TCI state. Optionally, the UE determines the beam (e.g. the QLC parameter or the TCI state) of the resource for the CLI measurement based on the (obtained) indicated TCI state. Here, the resource for the CLI measurement may be an aperiodic resource. Optionally, when at least one of the following conditions is satisfied, the UE measures the resource for the CLI measurement based on the indicated TCI state (or the UE determines the beam of the resource for the CLI measurement based on the indicated TCI state):

[0302] ● The time domain interval between the DCI triggering the resource (e.g., aperiodic resource) for the CLI measurement and the resource is less than or equal to a threshold. Optionally, the threshold is determined based on the UE capability. For example, the threshold may be indicated by the reported UE capability. Optionally, the time domain interval between the DCI and the resource may be the time domain offset / time domain interval between the (starting / ending) time domain unit of the PDCCH carrying the DCI and the (starting / ending) time domain unit of the resource for the CLI measurement;

[0303] ● The time domain interval between the DCI triggering the resource (e.g., aperiodic resource) for the CLI measurement and the resource to which the resource for the CLI measurement is mapped is less than or equal to a threshold. Optionally, the threshold is determined based on the UE capability. For example, the threshold may be indicated by the reported UE capability. Optionally, the threshold may be the threshold same as the threshold in the above condition. Optionally, the resources to which the resources for the CLI measurement are mapped may be one or more resources determined by the UE based on the mapping relation and mapped to the resources for the CLI measurement. Optionally, the method for the UE to determine the one or more resources to which the resources for the CLI measurement are mapped based on the mapping relation is described below.

[0304] The above method defines how the UE determines the beam of the resource for the CLI measurement based on the indicated TCI state, so that the UE and the base station have the same understanding of the beam of the resource for the CLI measurement, improving the reliability of the communication system.

[0305] How the UE measures the resource for the CLI measurement based on the information for indicating the beam associated with the resource for the CLI measurement / the information for indicating the beam with which the resource for the CLI measurement is configured (or how the UE determines the beam of the resource for the CLI measurement based on the information for indicating the beam associated with the resource for the CLI measurement / the information for indicating the beam with which the resource for the CLI measurement is configured) is discussed below. Optionally, the UE measures the resource for the CLI measurement based on the information for indicating the beam. Optionally, the measurement of the resource for the CLI measurement is based on the information for indicating the beam. Optionally, the UE determines the beam (for example, the QLC parameter or the TCI state) of the resource for the CLI measurement based on the information for indicating the beam. Optionally, the beam (for example, the QLC parameter or the TCI state) of the resource for the CLI measurement is determined based on the information for indicating the beam. Here, the resource for the CLI measurement may be an aperiodic resource. Optionally, when at least one of the following conditions is satisfied, the UE measures the resource for the CLI measurement based on the information for indicating the beam (or the UE determines the beam of the resource for the CLI measurement based on the information for indicating the beam, or the beam of the resource for the CLI measurement is determined based on the information for indicating the beam):

[0306] ● The time domain interval between the DCI triggering the resource (e.g., aperiodic resource) for the CLI measurement and the resource is greater than or equal to a threshold. Optionally, the threshold is determined based on the UE capability. For example, the threshold may be indicated by the reported UE capability. Optionally, the time domain interval between the DCI and the resource may be the time domain offset / time domain interval between the (starting / ending) time domain unit of the PDCCH carrying the DCI and the (starting / ending) time domain unit of the resource for the CLI measurement;

[0307] ● The time domain interval between the DCI triggering the resource (e.g., aperiodic resource) for the CLI measurement and the resource to which the resource for the CLI measurement is mapped is greater than or equal to a threshold. Optionally, the threshold is determined based on the UE capability. For example, the threshold may be indicated by the reported UE capability. Optionally, the threshold may be the threshold same as the threshold in the above / previous condition. Optionally, the resources to which the resources for the CLI measurement are mapped may be one or more resources determined by the UE based on the mapping relation and mapped to the resources for the CLI measurement. Optionally, the method of determining the one or more resources to which the resources for the CLI measurement are mapped based on the mapping relation is described below.

[0308] The above method defines how to determine the beam of the resource for the CLI measurement based on the information for indicating the beam, so that the UE and the base station have the same understanding of the beam of the resource for the CLI measurement, improving the reliability of the communication system.

[0309] Optionally, the CSI reporting configuration is associated with resources for the CLI measurement. Optionally, the resources for the CLI measurement include K1 (K1 1) CLI-RSSI resources and / or K2 (K2 1) SRS-RSRP resources. Refer above for description of the SRS-RSRP resources and / or CLI-RSSI resources. Optionally, the CSI reporting configuration may be associated with the first resource set and / or the second resource set. Optionally, the CSI reporting configuration may indicate the ID of the first resource set and / or the ID of the second resource set. Here, refer above for the association relation between the K1 CLI-RSSI resources and the first resource set and the association relation between the K2 SRS-RSRP and the second resource set. The UE may determine the CSI report associated with the CLI based on two types of resources, CLI-RSSI resource and SRS-RSRP resource. The CSI report associated with the CLI may be determined based on two types of resources, CLI-RSSI resource and SRS-RSRP resource. The UE may determine the total strength of CLI (from different UEs) through the measurement of the CLI-RSSI resource, but cannot determine the source of the CLI (e.g., from which UEs). In addition, the UE may determine the strength of CLI (e.g., from a certain UE) for a certain interference source through the measurement of the SRS-RSRP resource, but cannot determine the total strength of CLI (from different UEs). Therefore, joint measurement / reporting for these two types of resources may provide more information associated with the CLI for scheduling by the base station, improving the reliability of the communication system. Optionally, the UE may obtain the mapping relation between K1 CLI-RSSI resources and K2 SRS-RSRP resources (which may also be called an association relation, and its name is not limited in this application). Optionally, the mapping relation may be predefined (e.g., described in a specification). Optionally, the UE may report the CSI (associated with the CLI, or associated with the CLI measurement) based on the mapping relation. Optionally, the reported CSI (associated with the CLI, or associated with the CLI measurement) may be determined based on the mapping relation.

[0310] The mapping relation between the K1 CLI-RSSI resources and the K2 SRS-RSRP resources is discussed below. Optionally, the UE may determine the mapping relation based on at least one of the following methods. Optionally, the mapping relation may be based on at least one of the following methods.

[0311] ● Method 1: the UE may determine the mapping relation based on the order of the K1 CLI-RSSI resources and / or the order of the K2 SRS-RSRP resources. Optionally, the mapping relation may be determined based on the order of the K1 CLI-RSSI resources and / or the order of the K2 SRS-RSRP resources. Optionally, the order of resources may be the order of resource IDs. Optionally, the order of resources may be the configuration order of resources. Optionally, the order of resources may be the order of resources in the associated resource set. Optionally, K1 = K2. For example, the k-th resource of the K1 CLI-RSSI resources is mapped with the k-th resource of the K2 SRS-RSRP resources. Here, the k-th resource may be determined based on the resource ID, or the k-th resource may be determined based on the configuration information associated with the resource (for example, the location of the resource in the associated configuration information), or the k-th resource may be determined based on the associated resource set. For example, the K1 CLI-RSSI resources and the K2 SRS-RSRP resources are mapped one-to-one according to the order of resource IDs. In the disclosure, the term “mapped one-to-one” may be used interchangeably with the term “correspond one-to-one to”.

[0312] ● Method 2: the UE may determine the mapping relation based on the first resource set and / or the second resource set. The mapping relation may be determined based on the first resource set and / or the second resource set. Optionally, K1 = K2. For example, the first resource set includes K1 CLI-RSSI resources, and the second resource set includes K2 SRS-RSRP resources. Optionally, the resources in the first resource set are mapped one-to-one with the resources in the second resource set. Optionally, the k-th resource in the first resource set is mapped with the k-th resource in the second resource set.

[0313] ● Method 3: the UE may determine the mapping relation based on indication of the base station (for example, a higher-layer parameter, or the higher-layer parameter included in the CSI reporting configuration). Optionally, the mapping relation may be determined based on indication of the base station (for example, a higher-layer parameter, or the higher-layer parameter included in the CSI reporting configuration). For example, the CSI reporting configuration may indicate the mapping relation between the CLI-RSSI resources and the SRS-RSRP resources. Optionally, the mapping relation includes each of the K1 CLI-RSSI resources being associated with one or more SRS-RSRP resources. Optionally, the one or more SRS-RSRP resources may be resources of the K2 SRS-RSRP resources or resources in the second resource set. Optionally, the mapping relation includes each of the K2 SRS-RSRP resources being associated with one or more CLI-RSSI resources. Optionally, the one or more CLI-RSSI resources may be resources of the K1 CLI-RSSI resources or resources in the first resource set.

[0314] ● Method 4: the UE may determine the mapping relation based on the beam (or beam information) associated with the resource for the CLI measurement. Optionally, the mapping relation may be determined based on the beam (or beam information) associated with the resource for the CLI measurement. For example, when the beam (or beam information) of an SRS-RSRP resource and the beam (or beam information) of a CLI-RSSI resource are the same, the UE determines that the SRS-RSRP resource and the CLI-RSSI resource are mapped. For example, when the beam (or beam information) of an SRS-RSRP resource and the beam (or beam information) of a CLI-RSSI resource are the same, the SRS-RSRP resource and the CLI-RSSI resource are mapped. For example, when an SRS-RSRP resource and a CLI-RSSI resource are quasi co-located (e.g., type D quasi co-located), the UE determines that the SRS-RSRP resource and the CLI-RSSI resource are mapped.

[0315] ● Method 5: the UE may determine the mapping relation based on the resource / time domain unit associated with the resource for the CLI measurement. Optionally, the mapping relation may be determined based on the resource / time domain unit associated with the resource for the CLI measurement. Optionally, the resource associated with the CLI measurement may be the resource (for example, time domain resource and / or frequency domain resource) for the CLI measurement. Optionally, the time domain unit associated with the resource for the CLI measurement may be the time domain unit where the resource for the CLI measurement is located. For example, when the resource / time domain unit associated with an SRS-RSRP resource and the resource / time domain unit associated with a CLI-RSSI resource are the same, the UE determines that the SRS-RSRP resource and the CLI-RSSI resource are mapped. For example, when the time domain unit where an SRS-RSRP resource is located and the time domain unit where a CLI-RSSI resource is located are the same, the UE determines that the SRS-RSRP resource and the CLI-RSSI resource are mapped.

[0316] ● Method 6: the UE may determine the mapping relation based on the frequency domain unit associated with the resource for the CLI measurement. Optionally, the mapping relation may be determined based on the frequency domain unit associated with the resource for the CLI measurement. Optionally, the frequency domain unit associated with the resources for the CLI measurement may be the subband (for example, the uplink subband, and / or the downlink subband) where the resource for the CLI measurement is located. For example, when the frequency domain unit where an SRS-RSRP resource is located and the frequency domain unit where a CLI-RSSI resource is located are the same, the UE determines that the SRS-RSRP resource and the CLI-RSSI resource are mapped.

[0317] The above Method 1 to Method 6 define the mapping relation between the resources for the CLI measurement, so that the UE may accordingly report the measurement results of the resources mapped with each other for the scheduling by the base station, improving the reliability of the communication system.

[0318] Characteristics of the resources mapped with each other are discussed below. Optionally, a resource of the K1 CLI-RSSI resources may be called a first resource. Optionally, a resource of the K2 SRS-RSRP resources may be called a second resource. When the first resource and the second resource are mapped (or, when the CLI-RSSI resource and the SRS-RSRP resource are mapped), the first resource and the second resource satisfy at least one of the following characteristics:

[0319] ● The beams of the first resource and the second resource are related. For example, the beam associated with the first resource and the beam associated with the second resource are the same. For example, the first resource and the second resource are quasi co-located (type D quasi co-located). For example, the first resource and the second resource have the same TCI state.

[0320] ● The time domain units where the first resource and the second resource are located are related. For example, the time domain units where the first resource and the second resource are located are the same. For example, the time domain unit where the first resource is located and the time domain unit where the second resource is located have an offset K_time_offset, where K_time_offset is predefined (for example, one of 1, 2, 3, and 4), or indicated by the base station (for example, indicated by the CSI reporting configuration), or based on the UE capability (for example, indicated by the UE capability).

[0321] ● The frequency domain units where the first resource and the second resource are located are related. For example, the frequency domain units where the first resource and the second resource are located are the same. For example, the frequency domain unit where the first resource is located and the frequency domain unit where the second resource is located have an offset K_freq_offset, where K_freq_offset is predefined (for example, one of 1, 2, 3, and 4), or indicated by the base station (for example, indicated by the CSI reporting configuration), or based on the UE capability (for example, indicated by the UE capability).

[0322] The above methods define the characteristics / configuration restrictions between the associated resources for the CLI measurement, so that the mapped resources have (time domain / frequency domain / spatial domain) correlation, ensuring the correlation of the corresponding measurement results, improving the measurement accuracy and improving the reliability of the communication system.

[0323] How to determine the first resource and / or the second resource using the mapping relation between the first resource and the second resource, that is, determine the second resource based on the first resource and the mapping relation and / or determine the first resource based on the second resource and the mapping relation is discussed below. When the first resource and the second resource are mapped (or when the CLI-RSSI resource and the SRS-RSRP resource are mapped), the first resource may be determined based on the second resource, or the second resource may be determined based on the first resource. Optionally, the first resource being determined based on the second resource may be at least one of the followings:

[0324] ● The beam of the first resource is determined based on the second resource. For example, the beam associated with the first resource is determined based on the beam associated with the second resource. For example, the beam of the first resource is the same as the beam of the second resource.

[0325] ● The time domain unit where the first resource is located is determined based on the second resource. For example, the time domain unit where the first resource is located is determined based on the time domain unit n where the second resource is located. For example, the time domain unit where the first resource is located is the time domain unit n+K_time_offset, or n-K_time_offset. Refer above for description of K_time_offset.

[0326] ● The frequency domain unit where the first resource is located is determined based on the second resource. For example, the frequency domain unit where the first resource is located is determined based on the frequency domain unit n where the second resource is located. For example, the frequency domain unit where the first resource is located is the frequency domain unit n+K_freq_offset, or n-K_freq_offset. Refer above for description of K_freq_offset.

[0327] Optionally, the second resource being determined based on the first resource may be at least one of the followings:

[0328] ● The beam of the second resource is determined based on the first resource. For example, the beam associated with the second resource is determined based on the beam associated with the first resource. For example, the beam of the second resource is the same as the beam of the first resource.

[0329] ● The time domain unit where the second resource is located is determined based on the first resource. For example, the time domain unit where the second resource is located is determined based on the time domain unit n where the first resource is located. For example, the time domain unit where the second resource is located is the time domain unit n+K_time_offset, or n-K_time_offset. Refer above for description of K_time_offset.

[0330] ● The frequency domain unit where the second resource is located is determined based on the first resource. For example, the frequency domain unit where the second resource is located is determined based on the frequency domain unit n where the first resource is located. For example, the frequency domain unit where the second resource is located is the frequency domain unit n+K_freq_offset, or n-K_freq_offset. Refer above for description of K_freq_offset.

[0331] In the disclosure, the UE may determine the CLI-RSSI resource and the SRS-RSRP resource based on the mapping relation. In the disclosure, the mapped / associated CLI-RSSI resource and SRS-RSRP resource may be determined based on the mapping relation. The SRS-RSRP resource may be referred as the SRS-RSRP resource mapped with the CLI-RSSI resource. The CLI-RSSI resource may be referred as the CLI-RSSI resource mapped with the SRS-RSRP resource.

[0332] How the CSI report is determined based on the mapping relation is discussed below. Optionally, the report quantity parameter (e.g., reportQuantity) associated with the CSI reporting configuration is not set to “none”. Optionally, the CSI report corresponding to the CSI reporting configuration may include L1 quantity. In the disclosure, the term “L1 quantity” may be used interchangeably with “value of L1 quantity”. Optionally, the L1 quantity may be the quantity for the CLI measurement. Optionally, the L1 quantity may be the quantity of the SRS-RSRP resource, or the quantity of the CLI-RSSI resource. Optionally, the L1 quantity may be L1-SRS-RSRP, or L1-CLI-RSSI. Optionally, L1-SRS-RSRP is determined by the UE through the measurement of the SRS-RSRP resource. Optionally, L1-SRS-RSRP is obtained based on the measurement of the SRS-RSRP resource. Optionally, L1-CLI-RSSI is determined by the UE through the measurement of the CLI-RSSI resource. Optionally, L1-CLI-RSSI may be obtained based on the measurement of the CLI-RSSI resource. Optionally, the UE may determine the CSI and / or report the CSI and / or report the CSI report based on the CSI reporting configuration. Optionally, the CSI and / or the reporting of the CSI may be based on the CSI reporting configuration. In the disclosure, the CSI (the CSI associated with the CLI) may include at least one of the followings: a resource indicator, L1-SRS-RSRP, L1-CLI-RSSI. Optionally, the resource indicator may include a CLI-RSSI resource indicator and / or an SRS-RSRP resource indicator. Here, the resource indicator is used for indicating the SRS-RSRP resource and / or the CLI-RSSI resource. The SRS-RSRP resource indicator is used for indicating the SRS-RSRP resource. Here, the CLI-RSSI resource indicator is used for indicating the CLI-RSSI resource.

[0333] Optionally, the UE may obtain the number (N) of the (reported) resources, where N 1. Optionally, the resource may be a measured resource. Optionally, the reported resource may be information associated with the reported resource, or the CSI associated with the reported resource. Optionally, the CSI associated with the resource may include information for indicating the resource (e.g., the CLI-RSSI resource indicator and / or the SRS-RSRP resource indicator) and / or the L1 quantity (e.g., the L1-SRS-RSRP and / or the L1-CLI-RSSI). Optionally, N may be indicated by the higher-layer signaling / higher-layer parameter. Optionally, N may be indicated by the CSI reporting configuration. For example, N may be indicated by a first parameter (of the CSI reporting configuration). Optionally, the first parameter may be used for indicating the number of the resources reported by the UE. Optionally, N may be indicated by DCI and / or MAC-CE. Optionally, N≤N_max, where N_max is determined based on the UE capability. Optionally, N_max represents the maximum number of the (reported) resources supported by the UE as indicated by the UE capability. Optionally, N≤K1 and / or N≤K2. Optionally, the value of N is less than or equal to at least one of the followings: the minimum value of N_max and K1, the minimum value of N_max and K2, and the minimum value of N_max, K1 and K2. The above method defines the indication method and value range of N, so that the UE and the base station have the same understanding of N, improving the reliability of the communication system.

[0334] Optionally, the UE may determine K1 or K2 pair(s) of the associated resources based on the obtained mapping relation. Optionally, the K1 or K2 pair(s) of the associated resources may be determined based on the mapping relation. Optionally, each pair of the associated resources includes two types of resources, for example, these two types of resources are the CLI-RSSI resource and the SRS-RSRP resource, respectively. Optionally, the UE may determine the K1 or K2 pair(s) of the associated resources for the CLI measurement (for example, the CLI-RSSI resource and the SRS-RSRP resource) by Method 1 above. Optionally, the K1 or K2 pair(s) of the associated resources for the CLI measurement (for example, the CLI-RSSI resource and the SRS-RSRP resource) may be determined by Method 1 above. Optionally, the UE may determine that the K1 CLI-RSSI resources and the K2 SRS-RSRP resources are mapped one-to-one by Method 1 above. Optionally, the K1 CLI-RSSI resources and the K2 SRS-RSRP resources being mapped one-to-one may be determined by Method 1 above. For convenience of description, below is described by using the term “resource” in place of “resource pair” or “CLI-RSSI resource in resource pair” or “SRS-RSRP resource in resource pair”. Optionally, the UE reports N resource indicators based on the base station indication (or based on the first parameter). Optionally, the N resource indicators may correspond to N resources with the strongest / weakest measured CLI. Optionally, the base station may indicate that the N resource indicators correspond to the N resources with the strongest measured CLI, or correspond to the N resources with the weakest measured CLI. The above method defines the method of determining the N resources reported by the UE, so that the UE and the base station have the same understanding of the characteristics of the N resources (for example, the strongest or the weakest), improving the reliability of the communication system. Optionally, the UE reports N resource indicators in a report instance based on the base station indication (or based on the first parameter). Optionally, the UE may also (in the report instance) report the L1 quantities associated with the N resource indicators (for example, L1-SRS-RSRP and / or L1-CLI-RSSI). Optionally, the bitwidth of the CSI field corresponding to / associated with one / each of the N resource indicators is determined based on K1 or K2. For example, the bitwidth is or or or Optionally, in a report instance, the UE may report the largest / smallest (measured) L1 quantity and / or a differential L1 quantity. Optionally, the differential L1 quantity is determined / computed based on the largest / smallest (measured) L1 quantity. Optionally, the UE may also (in the report instance) report an indicator for indicating the L1 quantity type. Optionally, the indicator indicates the type of the L1 quantity associated with the largest / smallest (measured) L1 quantity. Optionally, the indicator indicates that the L1 quantity associated with the largest / smallest (measured) L1 quantity is L1-SRS-RSRP or L1-CLI-RSSI. Optionally, the bitwidth (of the CSI field) associated with the indicator is 1 bit. For example, when the value of the indicator is 0 (or 1), the L1 quantity indicated by the indicator is L1-SRS-RSRP; when the value of the indicator is 1 (or 0), the L1 quantity indicated by the indicator is L1-CLI-RSSI. Optionally, the CSI reporting may be to report the L1 quantity through differential reporting. The above method defines the method for determining the reference L1 quantity reported as differential L1, so that the UE and the base station have the same understanding of the reference L1 quantity, improving the reliability of the communication system. Optionally, in a report instance, for each type of resource for the CLI measurement (e.g., the CLI-RSSI resource or the SRS-RSRP resource), the UE may report the largest / smallest (measured) L1 quantity and / or the differential L1 quantity. Optionally, for each type of resource for the CLI measurement (e.g. the CLI-RSSI resource or the SRS-RSRP resource), the differential L1 quantity is determined / computed based on the largest / smallest (measured) L1 quantity (in the reported CSI, or in a report instance). Optionally, the UE may determine the differential value of the L1 quantity (or determine the value of the differential L1 quantity corresponding to / associated with the L1 quantity) based on the type of the (reported) L1 quantity. Optionally, the differential value of the L1 quantity (or the value of the differential L1 quantity corresponding to / associated with the L1 quantity) may be determined based on the type of the (reported) L1 quantity. Optionally, when the L1 quantity is a differential first type L1 quantity, the L1 quantity is determined based on the largest / smallest (measured) first type L1 quantity included in the CSI (or, in the report instance). Optionally, when the L1 quantity is a differential second type L1 quantity, the L1 quantity is determined based on the largest / smallest (measured) second type L1 quantity included in the CSI (or, in the report instance). In the disclosure, the term “for each type of resource for the CLI measurement” may be used interchangeably with the term “for L1 quantity associated with each type of resource for the CLI measurement” or “for each type of L1 quantity”. Optionally, the UE may (in the report instance) report a first indicator, where the first indicator indicates the resource associated with the largest / smallest (measured) L1 quantity (of the N reported resources). Optionally, the value (n) of the first indicator indicates / represents / corresponds to the (n+1)-th resource of the reported N resources. Optionally, a predefined resource indicator of the N resource indicators (for example, the resource indicator with the smallest / largest index / the first indicator in the CSI report) is associated with the largest / smallest L1-CLI-RSSI, and / or the UE reports a first indicator, where the first indicator indicates the resource indicator associated with the largest / smallest L1-SRS-RSRP of the N resource indicators. Optionally, a predefined resource indicator of the N resource indicators (for example, the resource indicator with the smallest / largest index / the first indicator in the CSI report) is associated with the largest / smallest L1-SRS-RSRP, and / or the UE reports a first indicator, where the first indicator indicates the resource indicator associated with the largest / smallest L1-CLI-RSSI of the N resource indicators. Optionally, the size of the CSI field associated with / corresponding to the first indicator is determined based on N. For example, the size of the CSI field corresponding to the first indicator is or

[0335] Optionally, the mapping order of CSI fields in a CSI report is shown in Table 1 or Table 2 below. Optionally, the UE may determine the CSI based on Table 1 or Table 2. Optionally, the CSI may be determined based on Table 1 or Table 2. Optionally, the CSI report includes resource indicator #1, resource indicator #2, ..., resource indicator #N. Optionally, the CSI associated with the resource indicators is ordered based on ascending / descending order of the resource indicator indexes. Optionally, the CSI report includes L1-CLI-RSSI #1 and L1-CLI-RSSI #2, ..., L1-CLI-RSSI #N. Optionally, the CSI report includes L1-SRS-RSRP #1 and L1-L1-SRS-RSRP #2, ..., L1-SRS-RSRP #N. Optionally, resource indicator #n corresponds to L1-CLI-RSSI #n. Optionally, resource indicator #n corresponds to L1-SRS-RSRP #n.

[0336] ● For Table 1, L1-CLI-RSSI #2, ..., L1-CLI-RSSI #N are differential L1 quantities. Optionally, the differential L1 quantities are determined based on L1-CLI-RSSI #1. Optionally, the first indicator indicates which resource corresponds to the largest / smallest (measured) L1-SRS-RSRP. For example, when the value of the first indicator is k, optionally, L1-SRS-RSRP #k+1 is the largest / smallest (measured) L1-SRS-RSRP. Optionally, L1-SRS-RSRP other than L1-SRS-RSRP #k+1 in the CSI report are differential L1-SRS-RSRP. The differential L1-SRS-RSRP is determined based on L1-SRS-RSRP #k+1.

[0337] ● For Table 2, L1-SRS-RSRP #2, ..., L1-SRS-RSRP #N are differential L1 quantities. Optionally, the differential L1 quantities are determined based on L1-SRS-RSRP #1. Optionally, the first indicator indicates which resource corresponds to the largest / smallest (measured) L1-CLI-RSSI. For example, when the value of the first indicator is k, optionally, L1-CLI-RSSI #k+1 is the largest / smallest (measured) L1-CLI-RSSI. Optionally, L1-CLI-RSSI other than L1-CLI-RSSI #k+1 in the CSI report are differential L1-CLI-RSSI. The differential L1-CLI-RSSI is determined based on L1-CLI-RSSI #k+1.

[0338]

[0339] Table 1 describes a Mapping order of CSI fields in a CSI reporting.

[0340]

[0341] Table 2 describes a Mapping order of CSI fields in a CSI report.

[0342] The above method defines the method of determining the reference resource reported as differential L1, so that the UE and the base station have the same understanding of the reference L1 quantity, improving the reliability of the communication system.

[0343] Optionally, the UE may obtain the number (N1) of the (reported) resources, where N1 1. Optionally, the resource may be a measured resource. Optionally, the resource may be a CLI-RSSI resource. Optionally, the reported resource may be information associated with the reported resource, or the CSI associated with the reported resource. Optionally, the CSI associated with the resource may include information for indicating the resource (e.g., CLI-RSSI resource indicator) and / or L1 quantity (e.g., L1-CLI-RSSI). Optionally, N1 may be indicated by the higher-layer signaling / the higher-layer parameter. Optionally, N1 may be indicated by the CSI reporting configuration. For example, N1 may be indicated by a second parameter (of the CSI reporting configuration). Optionally, the second parameter may be used for indicating the number of the resources (for example, CLI-RSSI resources) reported by the UE. Optionally, N1 may be indicated by DCI and / or MAC-CE. Optionally, N1≤N1_max, where N1_max is determined based on the UE capability. Optionally, N1_max represents the maximum number of the (reported) resources supported by the UE as indicated by the UE capability. Optionally, N1≤K1 and / or N1≤K2. Optionally, the value of N1 is less than or equal to at least one of the followings: the minimum value of N1_max and K1, or the minimum value of N1_max and K2, or the minimum value of N1_max, K1 and K2. The above method defines the indication method and value range of N1, so that the UE and the base station have the same understanding of N1, improving the reliability of the communication system. Optionally, the UE may determine the mapping relation between the K1 CLI-RSSI resources and the K2 SRS-RSRP resources based on the obtained mapping relation. Optionally, the mapping relation between the K1 CLI-RSSI resources and the K2 SRS-RSRP resources may be determined based on the mapping relation. Optionally, the UE may determine the mapping relation between the K1 CLI-RSSI resources and the K2 SRS-RSRP resources by Method 3 above. Optionally, the mapping relation between the K1 CLI-RSSI resources and the K2 SRS-RSRP resources may be determined based on Method 3 above. Optionally, each of the K1 CLI-RSSI resources is mapped with one or more SRS-RSRP resources. Optionally, the one or more SRS-RSRP resources may be resources of the K2 SRS-RSRP resources or resources of the second resource set. Optionally, the UE reports N1 resource indicators based on the base station indication (or based on the second parameter). Optionally, the N1 resource indicators may correspond to N1 resources with the strongest / weakest measured CLI. Optionally, the base station may indicate that the N1 resource indicators correspond to the N1 resources with the strongest measured CLI, or correspond to the N1 resources with the weakest measured CLI. The above method defines the method of determining the N1 resources reported by the UE, so that the UE and the base station have the same understanding of the characteristics of the N1 resources (for example, the strongest or the weakest), improving the reliability of the communication system. Optionally, the UE reports the N1 resource indicators in a report instance based on the base station indication (or based on the second parameter). Optionally, the UE may also (in the report instance) report the L1 quantities associated with the N1 resources (for example, L1-CLI-RSSI). Optionally, the bitwidth of the CSI field corresponding to / associated with one / each of the N1 resource indicators is determined based on K1. For example, the bitwidth is Optionally, the UE may also (in the report instance) report the L1 quantities (e.g., L1-SRS-RSRP) of the SRS-RSRP resources associated with / mapped to each of the N1 resources. Optionally, the UE may also (in the report instance) report M_max L1 quantities (e.g. L1-SRS-RSRP) associated with each of the N1 resources. Optionally, M_max 1. Optionally, M_max is determined based on the number of the SRS-RSRP resources associated with each of the K1 CLI-RSSI resources. Optionally, M_max refers to / is equal to / is based on the number of the SRS-RSRP resources mapped to one (or each) resource of the K1 CLI-RSSI resources (where the numbers of the SRS-RSRP resources mapped to each resource of the CLI-RSSI resources are equal). Optionally, M_max refers to / is equal to / is based on the maximum value of the number of the SRS-RSRP resources associated with each of the K1 CLI-RSSI resources. Optionally, the number of the SRS-RSRP resources mapped to a third resource of the N1 resources is M_actual. Optionally, if a reported resource indicator corresponds to the third resource, and M_actual is less than M_max, the M_actual L1 quantities of the M_max L1 quantities correspond one-to-one to / are associated one-to-one with the (M_actual) SRS-RSRP resources mapped to the third resource. The M_actual L1 quantities of the L1 quantities of the M_max SRS-RSRP resources refer to the first M_actual L1 quantities (or the last M_actual L1 quantities) of the L1 quantities of the M_max SRS-RSRP resources. Optionally, the value of the L1 quantity of the L1 quantities of the M_max SRS-RSRP resources that is not the M_actual L1 quantities is predefined (for example, the value is 0 or the L1 quantity corresponds to all 0 bits or the L1 quantity corresponds to all 1 bits). For example, K1 = 3, where the three CLI-RSSI resources are associated with {SRS-RSRP resource #1, SRS-RSRP resource #3}, {SRS-RSRP resource #2}, {SRS-RSRP resource #4, SRS-RSRP resource #5, SRS-RSRP resource #6}, respectively. In the example, since the maximum number of the associated SRS-RSRP resources of the K1 resources is 3, M_max is equal to 3. For example, the first reported CLI-RSSI resource is associated with three L1-SRS-RSRP, where the first L1-SRS-RSRP and the second L1-SRS-RSRP correspond to SRS-RSRP resource #1 and SRS-RSRP resource #3, respectively, and the value of the third L1-SRS-RSRP is 0 (that is, the CSI field of the L1-SRS-RSRP is all 0 bits).

[0344] The above method illustrates that the UE may report the L1 quantities of (all) the SRS-RSRP resources mapped to the CLI-RSSI resource. Another implementation method is that the UE may report part of the L1 quantities of (for example，M1) the SRS-RSRP resources mapped to the CLI-RSSI resource, which is described in detail below. Optionally, the UE may obtain the number (M1) of the (reported) resources, where M1 1. Optionally, the resource may be a measured resource. Optionally, the resource may be the SRS-RSRP resource mapped to one / each CLI-RSSI resource. Optionally, the reported resource may be information associated with the reported resource, or the CSI associated with the reported resource. Optionally, the CSI associated with the resource may include the SRS-RSRP resource indicator for indicating the SRS-RSRP resource mapped to the CLI-RSSI resource and / or the L1 quantity (e.g., L1-SRS-RSRP). Optionally, M1 may be indicated by the higher-layer signaling / the higher-layer parameter. Optionally, M1 may be indicated by the CSI reporting configuration. For example, M1 may be indicated by a third parameter (of the CSI reporting configuration). Optionally, M1 may be indicated by DCI and / or MAC-CE. Optionally, M1≤M1_max, where M1_max is determined based on the UE capability. Optionally, M1_max represents the maximum number of the (reported) resources supported by the UE as indicated by the UE capability. Optionally, M1≤M_max. The above method defines the indication method and value range of M1, so that the UE and the base station have the same understanding of M1, improving the reliability of the communication system. Optionally, the UE (also) reports the CSI of the SRS-RSRP resources of M1 resources in the SRS-RSRP resources mapped to (each of) the N1 resources of the K1 CLI-RSSI resources based on the third parameter, where the CSI includes the SRS-RSRP resource indicator and / or L1-SRS-RSRP. Optionally, the size of the CSI field corresponding to / associated with the SRS-RSRP resource indicator is determined based on M_max or M_actual. For example, the size of the CSI field corresponding to / associated with the SRS-RSRP resource indicator is based on / equal to or or or

[0345] Optionally, in a report instance, (for each type of resource for the CLI measurement), the UE may report the largest / smallest (measured) L1 quantity and / or the differential L1 quantity. Optionally, (for each type of resource for the CLI measurement), the differential L1 quantity is determined / computed based on the largest / smallest (measured) L1 quantity. Optionally, the UE may (also) report a second indicator (in the report instance), where the second indicator indicates the resource associated with the largest / smallest (measured) L1 quantity (of the N1 reported resources). Optionally, the value (n1) of the second indicator indicates / represents / corresponds to the (n1+1)-th resource of the reported N1 resources. Optionally, a predefined resource indicator of the N1 resource indicators (for example, the resource indicator with the smallest / largest index / the first indicator in the CSI report) is associated with the largest / smallest L1-CLI-RSSI, and / or the UE reports a second indicator, where the second indicator indicates the resource indicator associated with the largest / smallest L1-SRS-RSRP of the N1 resource indicators. Optionally, the size of the CSI field associated with / corresponding to the second indicator is determined based on N1. For example, the size of the CSI field corresponding to / associated with the second indicator is or

[0346] Optionally, when the UE reports M_max L1-SRS-RSRP associated with each of the N1 resources, the UE may report an indicator, indicating one of one or more SRS-RSRP resources associated with the CLI-RSSI resource associated with the largest / smallest (measured) L1-SRS-RSRP (of the N1 reported resources). Optionally, the size of the CSI field corresponding to / associated with the indicator is or Optionally, the value (q) of the indicator indicates / represents the (q+1)-th resource of the one or more SRS-RSRP resources associated with the CLI-RSSI resource associated with the largest / smallest (measured) L1-SRS-RSRP.

[0347] The above method may enable the UE to report the measurement results of the CLI-RSSI resources and also report the measurement results of the SRS-RSRP resources associated with the CLI-RSSI resources, and the base station may obtain the measurement results of the CLI-RSSI resources in order to know the size of the CLI interference, and determine the CLI interference source based on the measurement results of the associated SRS-RSRP resources, so that the base station may manage CLI interference, improving the efficiency of the communication system. How to determine N1 resources and / or M1 resources is discussed below. Optionally, the UE determines the determination method of the M1 resources based on the determination method of the N1 resources. Optionally, the determination method of the M1 resources may be determined based on the determination method of the N1 resources. Optionally, the UE determines the strength type on which the M1 resources determined from the SRS-RSRP resources mapped to the CLI-RSSI resource are based according to the strength type on which the N1 resources determined from the K1 resources are based. Optionally, the strength type on which the M1 resources determined from the SRS-RSRP resources mapped to the CLI-RSSI resource are based may be determined based on the strength type on which the N1 resources determined from the K1 resources are based. Here, the strength type may be the strongest or the weakest. For example, if the N1 resources are the N1 resources with the strongest measured RSSI of the K1 CLI-RSSI resources, the M1 resources are the M1 resources with the strongest measured RSRP of the SRS-RSRP resources mapped to each of the N1 resources. For example, if the N1 resources are the N1 resources with the weakest measured RSSI of the K1 CLI-RSSI resources, the M1 resources are the M1 resources with the weakest measured RSRP of the SRS-RSRP resources mapped to each of the N1 resources. The above method defines the determination method of the M1 resources, so that the UE and the base station have the same understanding of the determination method of the M1 resources, improving the reliability of the communication system.

[0348] In the above method, the UE not only reports the measurement results of the CLI-RSSI resources, but also reports the measurement results of the SRS-RSRP resources associated with the CLI-RSSI resources. The following is a variant of the above method, that is, the UE reports the measurement results of the SRS-RSRP resources while reporting the measurement results of the CLI-RSSI resources associated with the SRS-RSRP resources. Optionally, the UE may obtain the number (N2) of the (reported) resources, where N2 1. Optionally, the resource may be a measured resource. Optionally, the resource may be an SRS-RSRP resource. Optionally, the reported resource may be information associated with the reported resource, or the CSI associated with the reported resource. Optionally, the CSI associated with the resource may include information for indicating the resource (e.g., SRS-RSRP resource indicator) and / or L1 quantity (e.g., L1-SRS-RSRP). Optionally, N2 may be indicated by the higher-layer signaling / the higher-layer parameter. Optionally, N2 may be indicated by the CSI reporting configuration. For example, N2 may be indicated by a fourth parameter (of the CSI reporting configuration). Optionally, the fourth parameter may be used for indicating the number of the resources (for example, SRS-RSRP resources) reported by the UE. Optionally, N2 may be indicated by DCI and / or MAC-CE. Optionally, N2≤N2_max, where N2_max is determined based on the UE capability. Optionally, N2_max represents the maximum number of the (reported) resources supported by the UE as indicated by the UE capability. Optionally, N2≤K1 and / or N2≤K2. Optionally, the value of N2 is less than or equal to at least one of the followings: the minimum value of N2_max and K1, or the minimum value of N2_max and K2, or the minimum value of N2_max, K1 and K2. The above method defines the indication method and value range of N2, so that the UE and the base station have the same understanding of N2, improving the reliability of the communication system. Optionally, the UE may determine the mapping relation between the K1 CLI-RSSI resources and the K2 SRS-RSRP resources based on the obtained mapping relation. Optionally, the mapping relation between the K1 CLI-RSSI resources and the K2 SRS-RSRP resources may be determined based on the mapping relation. Optionally, the UE may determine the mapping relation between the K1 CLI-RSSI resources and the K2 SRS-RSRP resources by Method 3 above. Optionally, the mapping relation between the K1 CLI-RSSI resources and the K2 SRS-RSRP resources may be determined based on Method 3 above. Optionally, each of the K2 SRS-RSRP resources is mapped with one or more CLI-RSSI resources. Optionally, the one or more CLI-RSSI resources may be resources of the K1 CLI-RSSI resources or the resources in the first resource set. Optionally, the UE reports N2 resource indicators based on the base station indication (or based on the fourth parameter). Optionally, the N2 resource indicators may correspond to the N2 resources with the strongest / weakest measured CLI. Optionally, the base station may indicate that the N2 resource indicators correspond to the N2 resources with the strongest measured CLI, or correspond to the N2 resources with the weakest measured CLI. The above method defines the method of determining the N2 resources reported by the UE, so that the UE and the base station have the same understanding of the characteristics of the N2 resources (for example, the strongest or the weakest), improving the reliability of the communication system. Optionally, the UE reports the N2 resource indicators in a report instance based on the base station indication (or based on the fourth parameter). Optionally, the UE may also (in the report instance) report the L1 quantities (e.g., L1-CLI-RSSI) associated with the N2 resources. Optionally, the bitwidth of the CSI field corresponding to / associated with one / each of the N2 resource indicators is determined based on K2. For example, the bitwidth is Optionally, the UE may (in the report instance) report the L1 quantities (e.g., L1-CLI-RSSI) of the CLI-RSSI resources associated with / mapped to each of the N2 resources. Optionally, the UE may (in the report instance) report M_max L1 quantities (e.g. L1-CLI-RSSI) associated with each of the N2 resources. Optionally, M_max 1. Optionally, M_max is determined based on the number of the CLI-RSSI resources associated with each of the K2 SRS-RSRP resources. Optionally, M_max refers to / is equal to / is based on the number of the CLI-RSSI resources mapped to one (or each) of the K2 SRS-RSRP resources (where the numbers of the CLI-RSSI resources mapped to each of the SRS-RSRP resources are equal). Optionally, M_max refers to / is equal to / is based on the maximum value of the number of the CLI-RSSI resources associated with each of the K2 SRS-RSRP resources. Optionally, the number of the CLI-RSSI resources mapped to a fourth resource of the N2 resources is M_actual. Optionally, if a reported resource indicator corresponds to the fourth resource, and M_actual is less than M_max, the M_actual L1 quantities of the M_max L1 quantities correspond one-to-one to / are associated one-to-one with the (M_actual) CLI-RSSI resources mapped to the fourth resource. Optionally, the M_actual L1 quantities of the L1 quantities of the M_max CLI-RSSI resources refer to the first M_actual L1 quantities (or the last M_actual L1 quantities) of the L1 quantities of the M_max CLI-RSSI resources. Optionally, the value of the L1 quantity of the L1 quantities of the M_max CLI-RSSI resources that is not the M_actual L1 quantities is predefined (for example, the value is 0 or the L1 quantity corresponds to all 0 bits or the L1 quantity corresponds to all 1 bits). For example, K2 = 3, where the three SRS-RSRP resources are associated with {CLI-RSSI resource #1, CLI-RSSI resource #3}, {CLI-RSSI resource #2}, {CLI-RSSI resource #4, CLI-RSSI resource #5, CLI-RSSI resource #6}, respectively. In the example, since the maximum number of the associated CLI-RSSI resources of the K2 resources is 3, M_max is equal to 3. For example, the first reported SRS-RSRP resource is associated with three L1-CLI-RSSI, where the first L1-CLI-RSSI and the second L1-CLI-RSSI correspond to CLI-RSSI resource #1 and CLI-RSSI resource #3, respectively, and the value of the third L1-CLI-RSSI is 0 (that is, the CSI field of the L1-CLI-RSSI is all 0 bits).

[0349] The above method illustrates that the UE may report the L1 quantity of (all) CLI-RSSI resources mapped to the SRS-RSRP resource. Another implementation method is that the UE may report part of the L1 quantities of (for example，M2) the CLI-RSSI resources mapped to the SRS-RSRP resource, which is described in detail below. Optionally, the UE may obtain the number (M2) of the (reported) resources, where M2 1. Optionally, the resource may be a measured resource. Optionally, the resource may be the CLI-RSSI resource mapped to one / each SRS-RSRP resource. Optionally, the reported resource may be information associated with the reported resource, or the CSI associated with the reported resource. Optionally, the CSI associated with the resource may include the CLI-RSSI resource indicator for indicating the CLI-RSSI resources mapped to the SRS-RSRP resource and / or the L1 quantity (e.g., L1-SRS-RSRP). Optionally, M2 may be indicated by the higher-layer signaling / the higher-layer parameter. Optionally, M2 may be indicated by the CSI reporting configuration. For example, M2 may be indicated by a fifth parameter (of the CSI reporting configuration). Optionally, M2 may be indicated by DCI and / or MAC-CE. Optionally, M2≤M2_max, where M2_max is determined based on the UE capability. Optionally, M2_max represents the maximum number of the (reported) resources supported by the UE as indicated by the UE capability. Optionally, M2≤M_max. The above method defines the indication method and value range of M2, so that the UE and the base station have the same understanding of M2, improving the reliability of the communication system. Optionally, the UE (also) reports the CSI of the CLI-RSSI resources of M2 resources in the CLI-RSSI resources mapped to (each of) the N2 resources of the K2 SRS-RSRP resources based on the fifth parameter, where the CSI includes CLI-RSSI resource indicator and / or L1-CLI-RSSI. Optionally, the size of the CSI field corresponding to / associated with the CLI-RSSI resource indicator is determined based on M_max or M_actual. For example, the size of the CSI field corresponding to / associated with the CLI-RSSI resource indicator is based on / equal to or or or

[0350] Optionally, in a report instance, (for each type of resource for the CLI measurement), the UE may report the largest / smallest (measured) L1 quantity and / or the differential L1 quantity. Optionally, (for each type of resource for the CLI measurement), the differential L1 quantity is determined / computed based on the largest / smallest (measured) L1 quantity. Optionally, the UE may (also) report a third indicator (in the report instance), where the third indicator indicates the resource associated with the largest / smallest (measured) L1 quantity (of the N2 reported resources). Optionally, the value (n2) of the third indicator indicates / represents / corresponds to the (n2+1)-th resource of the reported N2 resources. Optionally, a predefined resource indicator of the N2 resource indicators (for example, the resource indicator with the smallest / largest index / the first indicator in the CSI report) is associated with the largest / smallest L1-SRS-RSRP, and / or the UE reports a third indicator, where the third indicator indicates the resource indicator associated with the largest / smallest L1-CLI-RSSI of the N2 resource indicators. Optionally, the size of the CSI field associated with / corresponding to the third indicator is determined based on N2. For example, the size of the CSI field corresponding to / associated with the third indicator is or

[0351] Optionally, when the UE reports M_max L1-CLI-RSSI associated with each of the N2 resources, the UE may report an indicator, indicating one of one or more CLI-RSSI resources associated with the SRS-RSRP resource associated with the largest / smallest (measured) L1-CLI-RSSI (of the N2 reported resources). Optionally, the size of the CSI field corresponding to / associated with the indicator is or Optionally, the value (z) of the indicator indicates / represents the (z+l)-th resource of the one or more CLI-RSSI resources associated with the SRS-RSRP resource associated with the largest / smallest (measured) L1-CLI-RSSI.

[0352] The above method may enable the UE to report the measurement results of the SRS-RSRP resources and also report the measurement results of the CLI-RSSI resources associated with the SRS-RSRP resources, and the base station may obtain the measurement results of the SRS-RSRP resources in order to know the interference source of the CLI interference, and determine the size of the CLI based on the measurement results of the associated CLI-RSSI resources, so that the base station may manage CLI interference, improving the efficiency of the communication system. How to determine N2 resources and / or M2 resources is discussed below. Optionally, the UE determines the determination method of the M2 resources based on the determination method of the N2 resources. Optionally, the determination method of the M2 resources may be determined based on the determination method of the N2 resources. Optionally, the UE determines the strength type on which the M2 resources determined from the CLI-RSSI resources mapped to the SRS-RSRP resource are based according to the strength type on which the N2 resources determined from the K2 resources are based. Optionally, the strength type on which the M2 resources determined from the CLI-RSSI resources mapped to the SRS-RSRP resource are based may be determined based on the strength type on which the N2 resources determined from the K2 resources are based. Here, the strength type may be the strongest or the weakest. For example, if the N2 resources are the N2 resources with the strongest measured RSRP of the K2 SRS-RSRP resources, the M2 resources are the M2 resources with the strongest measured RSSI of the CLI-RSSI resources mapped to each of the N2 resources. For example, if the N2 resources are the N2 resources with the weakest measured RSRP of the K2 SRS-RSRP resources, the M2 resources are the M2 resources with the weakest measured RSSI of the CLI-RSSI resources mapped to each of the N2 resources. The above method defines the determination method of the M2 resources, so that the UE and the base station have the same understanding of the determination method of the M2 resources, improving the reliability of the communication system.

[0353] FIG. 5 illustrates a method 500 performed by a base station according to various embodiments of the disclosure. The method 500 includes: at 501, the base station transmits, to a UE, a CSI reporting configuration, wherein the CSI reporting configuration is associated with resources for cross-link interference (CLI) measurement, and the resources for the CLI measurement include K1 (K1 1) CLI-RSSI resources and K2 (K2 1) SRS-RSRP resources; at 502, the base station receives, from the UE, CSI associated with the CLI measurement reported based on a mapping relation of the K1 CLI-RSSI resources and the K2 SRS-RSRP resources determined by the UE.

[0354] FIG. 6 is a block diagram of a terminal or user equipment (UE) 600 according to an embodiment of the disclosure.

[0355] The terminal is an electronic device capable of wireless communication, may include a User Equipment (UE), a portable phone, a smartphone, a tablet, an Internet of things (IoT) device, etc., having various form factors, and may perform wireless communication with a base station (BS) through a wireless channel.

[0356] Referring to FIG. 6, the UE 600 may include at least one transceiver (hereinafter, referred to as simply “transceiver”) 601, at least one processor (hereinafter, referred to as simply “processor”) 602, and at least one memory (hereinafter, referred to as simply “memory”) 603. According to at least one or a combination of methods corresponding to the embodiments described in the present disclosure, the transceiver 601, the processor 602, and the memory 603 of the UE 600 may operate. However, components of the UE 600 are not limited to the exemplary components illustrated in FIG. 6. In another embodiment, the UE 600 may further include additional components in addition to the above-mentioned components, or some components may be omitted. Further, in some embodiments, any combination of the transceiver 601, the processor 602, or the memory 603 may be integrated in the form of one component.

[0357] The transceiver 601 may be a communication circuit or communication circuitry that enables the UE 600 to perform wireless communication with a node or an entity of a network. For example, the transceiver 601 may enable the UE 600 to transmit or receive a signal to or from a BS through cellular communication, or to transmit or receive a signal to or from another UE through cellular communication. For example, the transceiver 601 may support at least one of various cellular communication technologies including 3rd generation (3G), 4th generation (4G), long term evolution (LTE), 5th generation (5G) NR, 6th generation (6G), and various cellular wireless communication technologies supported by the transceiver (601) may include all subsequent generations of evolved wireless communications.

[0358] According to an embodiment, the UE 600 may include a plurality of transceivers. For example, in the case of supporting evolved-universal terrestrial radio access-new radio (E-UTRA-NR) sual connectivity (EN-DC), the UE 600 may include a first transceiver supporting the 4G LTE wireless communication and a second transceiver supporting the 5G NR wireless communication. According to another embodiment, in the case of supporting NR-dual connectivity (NR-DC), the UE 600 may include a plurality of transceivers supporting the 5G NR wireless communication. According to still another embodiment, in the case of supporting near field wireless communication, the UE 600 may separately include a transceiver supporting at least one standard in the group of wireless communication protocol standards as defined in the protocol standards for Bluetooth®, wireless local area network (WLAN) network (including institute of electrical and electronics engineers (IEEE) 802.11-2016 standard or its amendments, e.g., 802.11ah, 802.11ad, 802.11ay, 802.11ax, 802.11az, 802.11ba, and 802.11be, without being limited thereto).

[0359] According to an embodiment, the transceiver 601 may include various circuit structures used to transmit or receive signals to or from a BS through a wireless channel. The signals may include control information and data. For example, the transceiver 601 may include a radio frequency (RF) transmitter for up-converting and amplifying the frequency of a transmitted signal and an RF receiver for low-noise-amplifying a received signal and down-converting the frequency thereof. The transceiver 601 may output a signal received through a wireless channel to the processor 602 and may transmit, through a wireless channel, a signal output from the processor 602.

[0360] The processor 602 may control general operations of the UE 600 according to embodiments of the disclosure. The processor 602 may be implemented by one or more integrated circuit (or circuitry) (IC) chips and may execute various data processings. The processor 602 may include at least one electric circuit, and may execute instructions (or a program, codes, data, etc.) stored in the memory 603, individually, collectively or in any combination thereof. Further, the processor 602 may include a single-core processor or multi-core processor, and may include a processor assembly including a plurality of processing circuits (circuitry) according to a specific implementation scheme.

[0361] The processor 602 may be electrically, operatively, or communicatively coupled to the transceiver 601 to control the transceiver 601.

[0362] The processor 602 may include at least one processor (or processing circuitry), and the at least one processor may perform the following operations individually, collectively or in any combination thereof. For example, the processor 602 may include a communication processor (CP) configured to control communication operations and an application processor (AP) configured to control execution of an upper layer (for example, an application layer). In a specific embodiment, at least a part of the processor 602 may be included in one chip and the other part of the processor 602 may be included in another chip. Otherwise, at least one processor may be included in another component, for example, the transceiver 601 or the memory 603.

[0363] The processor 602 may perform or control or cause an operation of the UE 600 for executing at least one or a combination of methods according to embodiments of the disclosure. For example, the processor 602 may control operations of the UE 600 for processing a downlink signal received from a BS or generating and transmitting an uplink signal to a BS. To this end, the processor 602 may execute a computer program, codes, or instructions stored in the memory 603, so as to control other components of the UE 600 to enable execution of various operations.

[0364] The memory 603 corresponds to a hardware storage device capable of temporarily or permanently storing information and may include one or more storage media. For example, the memory 603 may include a memory assembly including one or more storage media. For example, the one or more storage media may include permanent memory, such as a hard drive, flash memory, or read-only memory (ROM), semipermanent memory, such as random access memory (RAM), cache memory, or a combination thereof.

[0365] The memory 603 may be electrically, operatively, or communicatively coupled to the processor 602 and may be accessed by the processor 602.

[0366] The memory 603 may store a computer program, codes, or instructions executable by the processor 602. According to an embodiment, a computer program, codes, or instructions executable by the processor 602 may be either stored in a single memory device or separated and distributedly stored in two or more memory devices. By executing the instructions stored in the memory 603, the processor 602 may perform various functions according to an embodiment of the disclosure.

[0367] According to an embodiment of the disclosure, operations of the UE 600 may be caused to be performed based on execution of instructions (or a computer program or codes) stored in the memory 603 by at least one processor (or processing circuitry) configured to execute the same individually, collectively, or in any combination thereof, based on processing circuitry that is not configured to execute instructions, and / or based on components of processing circuitry that is not configured to execute instructions.

[0368] FIG. 7 is a block diagram of a base station (BS) 700 according to an embodiment of the disclosure.

[0369] The BS 700 may perform wireless communication with at least one user equipment (UE) located within the area of the BS 700 through a wireless channel.

[0370] Referring to FIG. 7, the BS 700 may include at least one transceiver (hereinafter, referred to as simply “transceiver”) 701, at least one processor (hereinafter, referred to as simply “processor”) 702, and at least one memory (hereinafter, referred to as simply “memory”) 703. According to at least one or a combination of methods corresponding to the embodiments described in the present disclosure, the transceiver 701, the processor 702, and the memory 703 of the BS 700 may operate. However, components of the BS 700 are not limited to the exemplary components illustrated in FIG. 7. In another embodiment, the BS 700 may further include additional components in addition to the above-mentioned components, or some components may be omitted. Further, in some embodiments, any combination of the transceiver 701, the processor 702, or the memory 703 may be integrated in the form of one component.

[0371] The transceiver 701 may be a communication circuit or communication circuitry that enables the BS 700 to perform wireless communication with a node or an entity of a network. For example, the transceiver 701 may enable the BS 700 to transmit or receive a signal to or from the UE 600 through cellular communication, or to transmit or receive a signal to or from another network entity through wireless communication. For example, the transceiver 701 may support various cellular communication technologies including 3rd generation (3G), 4th generation (4G), long term evolution (LTE), 5th generation (5G) NR, 6th generation (6G), and various cellular wireless communication technologies supported by the transceiver (701) may include all subsequent generations of evolved wireless communications. According to an embodiment, the transceiver 701 may include various circuit structures used to transmit or receive signals to or from a UE through a wireless channel. The signals may include control information and data. For example, the transceiver 701 may include a radio frequency (RF) transmitter for up-converting and amplifying the frequency of a transmitted signal and an RF receiver for low-noise-amplifying a received signal and down-converting the frequency thereof. The transceiver 701 may output a signal received through a wireless channel to the processor 702 and may transmit, through a wireless channel, a signal output from the processor 702.

[0372] Meanwhile, according to an embodiment of the present disclosure, the BS 700 may perform communication with a node or an entity of a network through wired or wireless communication. For example, the BS 700 may perform wired or wireless communication with an adjacent BS, or a node or an entity of a core network through a backhaul network. Although not illustrated in FIG. 7, when the BS 700 performs wired communication, the BS 700 may further include a separate network interface for wired communication in addition to the transceiver 701. The network interface may be referred to as network interface circuitry or communication interface circuitry.

[0373] The processor 702 may control general operations of the BS 700 according to embodiments of the disclosure. The processor 702 may be implemented by one or more integrated circuit (or circuitry) (IC) chips and may execute various data processings. The processor 702 may include at least one electric circuit, and may execute instructions (or a program, codes, data, etc.) stored in the memory 703, individually, collectively or in any combination thereof. Further, the processor 702 may include a single-core processor or multi-core processor, and may include a processor assembly including a plurality of processing circuits (circuitry) according to a specific implementation scheme.

[0374] The processor 702 may be electrically, operatively, or communicatively coupled to the transceiver 701 to control the transceiver 701.

[0375] The processor 702 may include at least one processor (or processing circuitry), and the at least one processor may perform the following operations individually, collectively or in any combination thereof. In a specific embodiment, at least a part of the processor 702 may be included in one chip and the other part of the processor 702 may be included in another chip. Otherwise, at least one processor may be included in another component, for example, the transceiver 701 or the memory 703.

[0376] The processor 702 may perform or control or cause an operation of the BS 700 for executing at least one or a combination of methods according to embodiments of the disclosure. For example, the processor 702 may control operations of the BS 700 for generating and transmitting a downlink signal to a UE or processing an uplink signal received from a UE. Otherwise, the BS 700 may transmit or receive a signal to or from a neighboring BS, transfer a signal received from a UE to an upper node of the network, or transmit a signal transferred from an upper node of the network to a UE. To this end, the processor 702 may execute a computer program, codes, or instructions stored in the memory 703, so as to control other components of the BS 700 to enable execution of various operations.

[0377] The memory 703 corresponds to a hardware storage device capable of temporarily or permanently storing information and may include one or more storage media. For example, the memory 703 may include a memory assembly including one or more storage media. For example, the one or more storage media may include permanent memory, such as a hard drive, flash memory, or read-only memory (ROM), semipermanent memory, such as random access memory (RAM), cache memory, or a combination thereof.

[0378] The memory 703 may be electrically, operatively, or communicatively coupled to the processor 702 and may be accessed by the processor 702.

[0379] The memory 703 may store a computer program, codes, or instructions executable by the processor 702. According to an embodiment, a computer program, codes, or instructions executable by the processor 702 may be either stored in a single memory device or separated and distributedly stored in two or more memory devices. By executing the instructions stored in the memory 703, the processor 702 may perform various functions according to an embodiment of the disclosure.

[0380] According to an embodiment of the disclosure, operations of the BS 700 may be caused to be performed based on execution of instructions (or a computer program or codes) stored in the memory 703 by at least one processor (or processing circuitry) configured to execute the same individually, collectively, or in any combination thereof, based on processing circuitry that is not configured to execute instructions, and / or based on components of processing circuitry that is not configured to execute instructions.

[0381] The UE or the base station may perform various communication procedures related to the control plane or the user plane by cooperating with one or more network entities based on wireless communication. For example, the UE may communicate with network entity such as an Access and Mobility Management Function (AMF) or a Session Management Function (SMF) via the base station, or the base station may perform at least one communication procedure by directly transmitting and receiving signals to / from, or relaying signals between, the network entities.

[0382] The structure of the above-described network entity will be described in more detail with reference to the drawings.

[0383] FIG. 8 is a block diagram of a network entity 800 according to an embodiment of the disclosure.

[0384] The network entity 800 may include an entity (apparatus, device, or server, etc.) that performs one or more network functions (NFs) or a part of a network function constituting a core network (e.g., a 5th generation (5G) core (5GC)) in a communication system. In this case, multiple NFs may be implemented within a single network entity, or a single NF may be distributed and implemented across a plurality of network entities. In addition, when an NF is implemented within the network entity, the NF may be implemented in the form of software, and in such a case, a program for operating the NF may be stored in memory of the network entity 800.

[0385] A single NF may be implemented by one or more instances, which may be deployed on the same network entity or distributed across multiple network entities to operate. The instance may be a software unit that logically executes a specific network function, and may be implemented in a form that is decoupled from physical hardware resources. Further, one or more NFs may be implemented in the form of one network slice to operate to satisfy specifications required by a particular service.

[0386] The NF may include at least one of an access and mobility management function (AMF), a session management function (SMF), a local session management function (L-SMF), a user plane function (UPF), a local user plane function (L-UPF), a policy control function (PCF), a unified data management (UDM), a unified data repository (UDR), a network exposure function (NEF), a network repository function (NRF), an application function (AF), a network slice selection function (NSSF), a network data analytics function (NWDAF), a network slice admission control function (NSACF), an authentication server function (AUSF), or a data network (DN).

[0387] Referring to FIG. 8, the network entity 800 may include at least one network interface 801, at least one processor 802 (hereinafter, “processor”), and at least one memory 803 (hereinafter, “memory”). As described above, a NF may be implemented in the form of a physical device such as the network entity 800, or may be virtualized and executed in the form of an instance. When implemented as an instance, the NF need not necessarily include physical components as illustrated in FIG. 8. In such a case, the instance may be logically represented as comprising one or more logical functional elements.

[0388] According to at least one or a combination of methods corresponding to the embodiments described in the present disclosure, the network interface 801, the processor 802, and the memory 803 of the network entity 800 may operate. However, components of the network entity 800 are not limited to the exemplary components illustrated in FIG. 8. In another embodiment, the network entity 800 may further include additional components in addition to the above-mentioned components, or some components may be omitted. Further, in an embodiment, the network interface 801, the processor 802, or the memory 803 may be integrated in the form of one component.

[0389] The network interface 801 is a collective term for a transmitter part of the network entity 800 and a receiver part of the network entity 800, and may be a communication circuit for transmitting or receiving a signal to or from a user equipment (UE), a base station (BS), or another network entity. Here, the communication circuit may include both a communication circuit for wireless communication and a communication circuit for a wired communication. For example, the network interface 801 may include a circuit, logic, hardware, etc., configured to exchange a control plane message or a user plane message with a UE, a BS, or other core network entities through wireless communication or wired communication. The network interface 801 may operate using various protocols (e.g., non-access stratum (NAS) protocol). The network interface 801 may also be referred to, for convenience of description or depending on implementation, as communication circuitry, network interface circuitry, or a communication interface circuitry.

[0390] The processor 802 may control general operations of the network entity 800 according to embodiments of the disclosure. The processor 802 may be implemented by one or more integrated circuit (or circuitry) (IC) chips and may execute various data processings. The processor 802 may include at least one electric circuit, and may execute instructions (or a program, codes, data, etc.) stored in the memory 803, individually, collectively or in any combination thereof. Further, the processor 802 may include a single-core processor or multi-core processor, and may include a processor assembly including a plurality of processing circuits (circuitry) according to a specific implementation scheme. Further, it should be noted that, according to another embodiment, in a case where NF is implemented in the form of an instance, the network function may be not necessarily configured by physical hardware.

[0391] According to an embodiment, the processor 802 may be electrically, operatively, or communicatively coupled to the network interface 801 to control the network interface 801.

[0392] The processor 802 may include at least one processor (or processing circuitry), and the at least one processor may perform the following operations individually, collectively or in any combination thereof. In a specific embodiment, at least a part of the processor 802 may be included in one chip and the other part of the processor 802 may be included in another chip. Otherwise, at least one processor may be included in another component, for example, the network interface 801 or the memory 803.

[0393] The processor 802 may perform or control or cause an operation of the network entity 800 for executing at least one or a combination of methods according to embodiments of the disclosure. For example, the processor 802 may control operations of the network entity 800 for exchanging a control plane message or a user plane message with a UE, a BS, or other core network entities through wireless or wired communication, using various protocols (e.g., NAS protocol). To this end, the processor 802 may execute a computer program, codes, or instructions stored in the memory 803, so as to control other components of the network entity 800 to enable execution of various operations.

[0394] The memory 803 corresponds to a hardware storage device capable of temporarily or permanently storing information and may include one or more storage media. For example, the memory 803 may include a memory assembly including one or more storage media. For example, the one or more storage media may include permanent memory, such as a hard drive, flash memory, or read-only memory (ROM), semipermanent memory, such as random access memory (RAM), cache memory, or a combination thereof.

[0395] The memory 803 may be electrically, operatively, or communicatively coupled to the processor 802 and may be accessed by the processor 802.

[0396] The memory 803 may store a computer program, codes, or instructions executable by the processor 802. According to an embodiment, a computer program, codes, or instructions executable by the processor 802 may be either stored in a single memory device or separated and distributedly stored in two or more memory devices. By executing the instructions stored in the memory 803, the processor 802 may perform various functions according to an embodiment of the disclosure.

[0397] According to an embodiment of the disclosure, operations of the network entity 800 may be caused to be performed based on execution of instructions (or a computer program or codes) stored in the memory 803 by at least one processor (or processing circuitry) configured to execute the same individually, collectively, or in any combination thereof, based on processing circuitry that is not configured to execute instructions, and / or based on components of processing circuitry that is not configured to execute instructions.

[0398] Furthermore, “at least one entry / at least one” described in the disclosure includes any and / or all possible combinations of the listed items, and various embodiments and various examples of the embodiments described in the disclosure may be used in any appropriate form changes and combinations, and “ / ” described in the disclosure means “or”.

[0399] In addition, “A maps to B”, “A and B are mapped”, “A maps with B”, “A associates B” and “A is associated with B” described in the disclosure may be used interchangeably.

[0400] The various illustrative logical blocks, modules, and circuits described in the disclosure may be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0401] The steps of a method or algorithm described in the disclosure may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.

[0402] In one or more exemplary designs, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. Storage media may be any available media that can be accessed by a general purpose or special purpose computer.

[0403] The description set forth herein, in connection with the appended drawings, describes example configurations, methods, and apparatuses and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “example” used herein means “serving as an example, instance, or illustration” and not “preferred” or “advantageous over other examples”. The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.

[0404] While this specification contains many specific implementation details, these should not be construed as limitations on the scope of any inventions or of what may be claimed, but rather as descriptions of features specific to particular embodiments of particular inventions. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a subcombination or variant of a subcombination.

[0405] It is to be understood that the specific order or hierarchy of steps in the methods of the disclosure is an illustration of exemplary processes. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the methods may be rearranged to achieve the functions and effects disclosed herein. The accompanying method claims present elements of the various steps in a sample order, and are not meant to be limited to the specific order or hierarchy presented unless specifically recited therein. Furthermore, although elements may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated. Accordingly, the disclosure is not limited to illustrated examples and any means for performing the functionality described herein are included in aspects of the disclosure.

[0406] The text and drawings are provided as examples only to help readers understand the disclosure. They are not intended and should not be interpreted as limiting the scope of the disclosure in any way. Although certain embodiments and examples have been provided, based on the content disclosed herein, it is obvious to those skilled in the art that modifications to the illustrated embodiments and examples can be made without departing from the scope of the disclosure.

[0407] Meanwhile, although specific embodiments of the present disclosure have been described in detail, various modifications may be made without departing from the scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited to the described embodiments, but should be defined by the claims and equivalents thereof.

Claims

1.A method performed by a user equipment (UE), the method comprising:receiving, from a base station, first information configuring a sub-band full duplex (SBFD) symbol, the SBFD symbol including an uplink (UL) sub-band and a downlink (DL) sub-bands;receiving, from the base station, second information configuring a cross link interference (CLI)-received signal strength indicator (RSSI) measurement resource;identifying at least one frequency resource for a CLI-RSSI measurement by excluding a frequency resource outside frequency resources which are in the DL sub-bands; andperforming the CLI-RSSI measurement on the at least one frequency resource.2.The method of claim 1, wherein, in case that the CLI-RSSI measurement resource is for a periodic CLI-RSSI measurement or a semi-persistent CLI-RSSI measurement, the CLI-RSSI measurement resource is within the SBFD symbol.3.The method of claim 1, wherein the second information includes information on a starting PRB index of a measurement bandwidth of the CLI RSSI measurement resource, and information on a size of the measurement bandwidth of the CLI RSSI measurement resource.4.The method of claim 1, wherein, in case that the CLI-RSSI measurement resource is for a periodic CLI-RSSI measurement, the second information includes information on a quasi co-located (QCL) type D associated with a transmission configuration indicator (TCI) state.5.The method of claim 1, wherein, in case that the CLI-RSSI measurement resource is for an aperiodic CLI-RSSI measurement, the second information includes information on a slot offset between a slot including downlink control information (DCI) triggering CLI-RSSI measurement resources and a slot in which the CLI-RSSI measurement resources are measured.6.The method of claim 1, further comprising:receiving, from the base station, DCI triggering the CLI-RSSI measurement; andin case that the CLI-RSSI measurement resource is for an aperiodic CLI-RSSI measurement, applying a QCL type D for the CLI-RSSI measurement resource,wherein an offset between a last symbol of a physical downlink control channel (PDCCH) carrying the DCI and a first symbol of the CLI-RSSI measurement resource is equal to or greater than a threshold based on a UE capability.7.The method of claim 1, further comprising:transmitting, to the base station, a report for the CLI-RSSI measurement,wherein the report includes a largest measured value of the CLI-RSSI measurement and a differential value of the CLI-RSSI measurement which is based on the largest measured value.8.A user equipment (UE), the method comprising:at least one transceiver;at least one processor communicatively coupled to the at least one transceiver; andat least one memory, communicatively coupled to the at least one processor, storing instructions executable by the at least one processor individually or in any combination to cause the UE to:receive, from a base station, first information configuring a sub-band full duplex (SBFD) symbol, the SBFD symbol including an uplink (UL) sub-band and a downlink (DL) sub-bands,receive, from the base station, second information configuring a cross link interference (CLI)-received signal strength indicator (RSSI) measurement resource,identify at least one frequency resource for a CLI-RSSI measurement by excluding a frequency resource outside frequency resources which are in the DL sub-bands, andperform the CLI-RSSI measurement on the at least one frequency resource.9.The UE of claim 8, wherein, in case that the CLI-RSSI measurement resource is for a periodic CLI-RSSI measurement or a semi-persistent CLI-RSSI measurement, the CLI-RSSI measurement resource is within the SBFD symbol.10.The UE of claim 8, wherein the second information includes information on a starting PRB index of a measurement bandwidth of the CLI RSSI measurement resource, and information on a size of the measurement bandwidth of the CLI RSSI measurement resource.11.The UE of claim 8, wherein, in case that the CLI-RSSI measurement resource is for a periodic CLI-RSSI measurement, the second information includes information on a quasi co-located (QCL) type D associated with a transmission configuration indicator (TCI) state.12.The UE of claim 8, wherein, in case that the CLI-RSSI measurement resource is for an aperiodic CLI-RSSI measurement, the second information includes information on a slot offset between a slot including downlink control information (DCI) triggering CLI-RSSI measurement resources and a slot in which the CLI-RSSI measurement resources are measured.13.The UE of claim 8, wherein the instructions further cause the UE to:receive, from the base station, DCI triggering the CLI-RSSI measurement; andin case that the CLI-RSSI measurement resource is for an aperiodic CLI-RSSI measurement, apply a QCL type D for the CLI-RSSI measurement resource,wherein an offset between a last symbol of a physical downlink control channel (PDCCH) carrying the DCI and a first symbol of the CLI-RSSI measurement resource is equal to or greater than a threshold based on a UE capability.14.The UE of claim 8, wherein the instructions further cause the UE to:transmit, to the base station, a report for the CLI-RSSI measurement,wherein the report includes a largest measured value of the CLI-RSSI measurement and a differential value of the CLI-RSSI measurement which is based on the largest measured value.15.One or more non-transitory computer-readable storage media storing computer-executable instructions that, when executed by at least one processor of a user equipment (UE) individually or collectively, cause the UE to perform operations, the operations comprising:receiving, from a base station, first information configuring a sub-band full duplex (SBFD) symbol, the SBFD symbol including an uplink (UL) sub-band and a downlink (DL) sub-bands;receiving, from the base station, second information configuring a link interference (CLI)-received signal strength indicator (RSSI) measurement resource in the SBFD symbol;identifying at least one frequency resource for a CLI-RSSI measurement by excluding a frequency resource outside frequency resources in the DL sub-bands; andperforming the CLI-RSSI measurement on the at least one frequency resource.

Images