Method and apparatus for CSI report in wireless communication system

Abstract

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The method includes receiving a plurality of channel state information (CSI) report configurations with a same physical uplink control channel (PUCCH) resource, identifying that at least one reference signal provided by a CSI report configuration among the plurality of CSI report configurations satisfies an event, and transmitting one CSI report including indication information corresponding to the CSI report configuration.

Description

METHOD AND APPARATUS FOR CSI REPORT IN WIRELESS COMMUNICATION SYSTEM

[0001] The disclosure relates to communication technology, and more particularly, to an apparatus in a communication system and a method performed by the same.

[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 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] There is a need for an improved method and apparatus for CSI reporting in a wireless communication system.

[0009] The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The method includes receiving a plurality of channel state information (CSI) report configurations with a same physical uplink control channel (PUCCH) resource, identifying that at least one reference signal provided by a CSI report configuration among the plurality of CSI report configurations satisfies an event, and transmitting one CSI report including indication information corresponding to the CSI report configuration.

[0010] In order to illustrate the technical schemes of the embodiments of the disclosure more clearly, the drawings of the embodiments of the disclosure will be briefly introduced below. Apparently, the drawings described below only refer to some embodiments of the disclosure, and do not limit the disclosure. In the drawings:

[0011] FIG. 1 illustrates a schematic diagram of an example wireless network according to some embodiments of the disclosure;

[0012] FIG. 2A illustrates example wireless transmission path according to some embodiments of the disclosure;

[0013] FIG. 2B illustrate example wireless reception path according to some embodiments of the disclosure;

[0014] FIG. 3A illustrates an example user equipment (UE) according to some embodiments of the disclosure;

[0015] FIG. 3B illustrates an example gNB according to some embodiments of the disclosure;

[0016] FIG. 4 illustrates a block diagram of a first transceiving node according to some example embodiments of the disclosure;

[0017] FIG. 5 illustrates a block diagram of a second transceiving node according to some example embodiments of the disclosure;

[0018] FIG. 6 illustrates a flowchart of a method performed by a base station according to some example embodiments of the disclosure;

[0019] FIG. 7 illustrates a flowchart of a method performed by a UE according to some example embodiments of the disclosure;

[0020] FIGS. 8A illustrates some examples of uplink transmission timing according to some example embodiments of the disclosure;-

[0021] FIG. 8B illustrates some examples of uplink transmission timing according to some example embodiments of the disclosure;

[0022] FIG. 8C illustrates some examples of uplink transmission timing according to some example embodiments of the disclosure;

[0023] FIG. 9 illustrates a schematic diagram of a timeline relationship between a first physical channel and a second physical channel according to some example embodiments of the disclosure;

[0024] FIG. 10 illustrates a schematic diagram of a timeline relationship between a first physical channel and a second physical channel according to some example embodiments of the disclosure;

[0025] FIG. 11A illustrates a schematic diagram of uplink transmission timing according to some example embodiments of the disclosure;

[0026] FIG. 11B illustrates a schematic diagram of uplink transmission timing according to some example embodiments of the disclosure;

[0027] FIG. 12A illustrates a schematic diagram of uplink transmission timing according to some example embodiments of the disclosure;

[0028] FIG. 12B illustrates a schematic diagram of uplink transmission timing according to some example embodiments of the disclosure;

[0029] FIG. 13 illustrates a flowchart of a method performed by a UE according to some embodiments of the disclosure;

[0030] FIG. 14 illustrates a flowchart of a method performed by a base station according to some embodiments of the disclosure.

[0031] According to some aspects of the disclosure, a method performed by a user equipment (UE) in a wireless communication system is provided. The method comprises: receiving a plurality of channel state information (CSI) report configurations with a same physical uplink control channel (PUCCH) resource; identifying that at least one reference signal provided by a CSI report configuration among the plurality of CSI report configurations satisfies an event; and transmitting one CSI report including indication information corresponding to the CSI report configuration.

[0032] In combination with one or more aspects of the method performed by the UE described above, for example, the CSI report is zero padded to a fixed payload size, if a size of the CSI report is smaller than the fixed payload size, and the fixed payload size is given by a maximum payload size among a plurality of payload sizes determined based on the plurality of CSI report configurations.

[0033] In combination with one or more aspects of the method performed by the UE described above, for example, the plurality of CSI report configurations are associated with a same serving cell index.

[0034] In combination with one or more aspects of the method performed by the UE described above, for example, if a mode for a CSI report is configured as a mode A, the plurality of CSI report configurations are associated with a same CSI trigger state.

[0035] In combination with one or more aspects of the method performed by the UE described above, for example, if a mode for a CSI report is configured as a mode B, the plurality of CSI report configurations are associated with a same physical uplink shared channel (PUSCH) resource.

[0036] In combination with one or more aspects of the method performed by the UE described above, for example, a plurality of bits for the indication information are placed at a beginning of the CSI report.

[0037] According to some aspects of the disclosure, a method performed by a base station in a wireless communication system is provided. The method includes: transmitting a plurality of channel state information (CSI) report configurations with a same physical uplink control channel (PUCCH) resource; and receiving one CSI report including indication information corresponding to a CSI report configuration, among the plurality of CSI report configurations, wherein at least one reference signal provided by the CSI report configuration satisfies an event.

[0038] In combination with one or more aspects of the method performed by the base station described above, for example, the CSI report is zero padded to a fixed payload size, if a size of the CSI report is smaller than the fixed payload size, and the fixed payload size is given by a maximum payload size among a plurality of payload sizes determined based on the plurality of CSI report configurations.

[0039] In combination with one or more aspects of the method performed by the base station described above, for example, the plurality of CSI report configurations are associated with a same serving cell index.

[0040] In combination with one or more aspects of the method performed by the base station described above, for example, if a mode for a CSI report is configured as a mode A, the plurality of CSI report configurations are associated with a same CSI trigger state.

[0041] In combination with one or more aspects of the method performed by the base station described above, for example, if a mode for a CSI report is configured as a mode B, the plurality of CSI report configurations are associated with a same physical uplink shared channel (PUSCH) resource.

[0042] In combination with one or more aspects of the method performed by the base station described above, for example, a plurality of bits for the indication information are placed at a beginning of the CSI report.

[0043] According to some aspects of the disclosure, there is also provided a UE in a wireless communication system. The UE includes a transceiver; and at least one processor coupled with the transceiver and configured to: receive a plurality of channel state information (CSI) report configurations with a same physical uplink control channel (PUCCH) resource, identify that at least one reference signal provided by a CSI report configuration among the plurality of CSI report configurations satisfies an event, and transmit one CSI report including indication information corresponding to the CSI report configuration.

[0044] According to some aspects of the disclosure, there is also provided a base station in a wireless communication system. The base station includes a transceiver; and at least one processor coupled with the transceiver and configured to: transmit a plurality of channel state information (CSI) report configurations with a same physical uplink control channel (PUCCH) resource, and receive one CSI report including indication information corresponding to a CSI report configuration, among the plurality of CSI report configurations, wherein at least one reference signal provided by the CSI report configuration satisfies an event.

[0045] According to some aspects of the disclosure, there is also provided a computer-readable storage medium on which one or more computer programs are stored, wherein one or more aspects of the above-described methods performed by the UE can be implemented when the one or more computer programs are executed by one or more processors.

[0046] According to some aspects of the disclosure, there is also provided a computer-readable storage medium on which one or more computer programs are stored, wherein one or more aspects of the above-described methods performed by the base station can be implemented when the one or more computer programs are executed by one or more processors.

[0047] In order to make the purpose, technical schemes and advantages of the embodiments of the disclosure clearer, the technical schemes of the embodiments of the disclosure will be described clearly and completely with reference to the drawings of the embodiments of the disclosure. Apparently, the described embodiments are a part of the embodiments of the disclosure, but not all embodiments. Based on the described embodiments of the disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the protection scope of the disclosure.

[0048] Before undertaking the DETAILED DESCRIPTION below, it can be advantageous to set forth definitions of certain words and phrases used throughout this patent document. The term "couple" and its derivatives refer to any direct or indirect communication between two or more elements, whether or not those elements are in physical contact with one another. The terms "transmit," "receive," and "communicate," as well as derivatives thereof, encompass both direct and indirect communication. The terms "include" and "comprise," as well as derivatives thereof, mean inclusion without limitation. The term "or" is inclusive, meaning and / or. The phrase "associated with," as well as derivatives thereof, means to include, be included within, connect to, interconnect with, contain, be contained within, connect to or with, couple to or with, be communicable with, cooperate with, interleave, juxtapose, be proximate to, be bound to or with, have, have a property of, have a relationship to or with, or the like. The term "controller" means any device, system or part thereof that controls at least one operation. Such a controller may be implemented in hardware or a combination of hardware and software and / or firmware. The functionality associated with any particular controller may be centralized or distributed, whether locally or remotely. The phrase "at least one of," when used with a list of items, means that different combinations of one or more of the listed items may be used, and only one item in the list may be needed. For example, "at least one of: A, B, and C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, and A and B and C. For example, "at least one of: A, B, or C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, and A, B and C.

[0049] Moreover, various functions described below may be implemented or supported by one or more computer programs, each of which is formed from computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, sets of instructions, procedures, functions, objects, classes, instances, related data, or a portion thereof adapted for implementation in a suitable computer-readable program code. The phrase "computer-readable program code" includes any type of computer code, including source code, object code, and executable code. The phrase "computer-readable medium" includes any type of medium capable of being accessed by a computer, such as Read-Only Memory (ROM), Random Access Memory (RAM), a hard disk drive, a Compact Disc (CD), a Digital Video Disc (DVD), or any other type of memory. A "non-transitory" computer-readable medium excludes wired, wireless, optical, or other communication links that transport transitory electrical or other signals. A non-transitory computer-readable medium includes media where data may be permanently stored and media where data may be stored and later overwritten, such as a rewritable optical disc or an erasable memory device.

[0050] Terms used herein to describe the embodiments of the disclosure are not intended to limit and / or define the scope of the present invention. For example, unless otherwise defined, the technical terms or scientific terms used in the disclosure shall have the ordinary meaning understood by those with ordinary skills in the art to which the present invention belongs.

[0051] It should be understood that "first", "second" and similar words used in the disclosure do not express any order, quantity or importance, but are only used to distinguish different components. Similar words such as singular forms "a", "an" or "the" do not express a limitation of quantity, but express the existence of at least one of the referenced item, unless the context clearly dictates otherwise. For example, reference to "a component surface" includes reference to one or more of such surfaces.

[0052] As used herein, any reference to "an example" or "example", "an implementation" or "implementation", "an embodiment" or "embodiment" means that particular elements, features, structures or characteristics described in connection with the embodiment is included in at least one embodiment. The phrases "in one embodiment" or "in one example" appearing in different places in the specification do not necessarily refer to the same embodiment.

[0053] As used herein, "a portion of" or "a part of" something means "at least some of" the thing, and as such may mean less than all of, or all of, the thing. As such, "a portion of" a thing includes the entire thing as a special case, i.e., the entire thing is an example of a portion of the thing.

[0054] As used herein, the term "set" may mean one or more. For example, a set of items may be a single item or a collection of two or more items.

[0055] In the disclosure, to determine whether a specific condition is satisfied or satisfyed, expressions, such as "greater than / larger than" or "less than / smaller than" are used by way of example and expressions, such as "greater than or equal to" or "less than or equal to" are also applicable and not excluded. For example, a condition defined with "greater than or equal to" may be replaced with "greater than" (or vice-versa), a condition defined with "less than or equal to" may be replaced with "less than" (or vice-versa), etc. For another example, "less than", "less than or equal to", and "not greater than" may be used interchangeably. "Greater than", "greater than or equal to", and "not less than" may be used interchangeably.

[0056] It will be further understood that similar words such as the term "include" or "comprise" mean that elements or objects appearing before the word encompass the listed elements or objects appearing after the word and their equivalents, but other elements or objects are not excluded. Similar words such as "connect" or "connected" are not limited to physical or mechanical connection, but may include electrical connection, whether direct or indirect. "Upper", "lower", "left" and "right" are only used to express a relative positional relationship, and when an absolute position of the described object changes, the relative positional relationship may change accordingly.

[0057] The various embodiments discussed below for describing the principles of the disclosure in the patent document are for illustration only and should not be interpreted as limiting the scope of the disclosure in any way. Those skilled in the art will understand that the principles of the disclosure may be implemented in any suitably arranged wireless communication system. For example, although the following detailed description of the embodiments of the disclosure will be directed to LTE and / or 5G communication systems, those skilled in the art will understand that the main points of the disclosure may also be applied to other communication systems with similar technical backgrounds and channel formats with slight modifications without departing from the scope of the disclosure. The technical schemes of the embodiments of the present application may be applied to various communication systems, and for example, the communication systems may include global systems for mobile communications (GSM), code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) systems, general packet radio service (GPRS) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, universal mobile telecommunications system (UMTS), worldwide interoperability for microwave access (WiMAX) communication systems, 5th generation (5G) systems or new radio (NR) systems, etc. In addition, the technical schemes of the embodiments of the present application may be applied to future-oriented communication technologies.

[0058] 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".

[0059] 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.

[0060] 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.

[0061] 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.

[0062] Hereinafter, the embodiments of the disclosure will be described in detail with reference to the accompanying drawings. It should be noted that the same reference numerals in different drawings will be used to refer to the same elements already described.

[0063] 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 will be apparent to those skilled in the art that changes may be made to the illustrated embodiments and examples without departing from the scope of the disclosure.

[0064] The following FIGS. 1- 3B describe various embodiments implemented by using orthogonal frequency division multiplexing (OFDM) or orthogonal frequency division multiple access (OFDMA) communication technologies in wireless communication systems. The descriptions of FIGS. 1- 3B do not mean physical or architectural implications for the manner in which different embodiments may be implemented. Different embodiments of the disclosure may be implemented in any suitably arranged communication systems.

[0065] FIG. 1 illustrates an example wireless network 100 according to some embodiments of the disclosure. The embodiment of the wireless network 100 shown in FIG. 1 is for illustration only. Other embodiments of the wireless network 100 may be used without departing from the scope of the disclosure.

[0066] The wireless network 100 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) network 130, such as the Internet, a private IP network, or other data networks.

[0067] Depending on a type of the network, other well-known terms such as "base station (BS)" or "access point" may 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" may be used instead of "user equipment" or "UE". For example, the terms "terminal", "user equipment" and "UE" may be 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).

[0068] gNB 102 provides wireless broadband access to the network 130 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 network 130 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 implementations, one or more of gNBs 101-103 may communicate with each other and with UEs 111-116 using 5G, Long Term Evolution (LTE), LTE-A, WiMAX or other advanced wireless communication technologies.

[0069] 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.

[0070] 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 implementations, one or more of gNB 101, gNB 102, and gNB 103 support codebook designs and structures for systems with 2D antenna arrays.

[0071] Although FIG. 1 illustrates an example of the wireless network 100, various changes may be made to FIG. 1. The wireless network 100 may include any number of gNBs and any number of UEs in any suitable arrangement, for example. Furthermore, gNB 101 may directly communicate with any number of UEs and provide wireless broadband access to the network 130 for those UEs. Similarly, each gNB 102-103 may directly communicate with the network 130 and provide direct wireless broadband access to the network 130 for the UEs. In addition, gNB 101, 102 and / or 103 may provide access to other or additional external networks, such as external telephone networks or other types of data networks.

[0072] FIGS. 2A and 2B illustrate example wireless transmission and reception paths according to some embodiments of the disclosure. In the following description, the transmission path 200 may be described as being implemented in a gNB, such as gNB 102, and the reception path 250 may be described as being implemented in a UE, such as UE 116. However, it should be understood that the reception path 250 may be implemented in a gNB and the transmission path 200 may be implemented in a UE. In some implementations, 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.

[0073] The transmission path 200 includes a channel coding and modulation block 205, a Serial-to-Parallel (S-to-P) block 210, a size N Inverse Fast Fourier Transform (IFFT) block 215, a Parallel-to-Serial (P-to-S) block 220, a cyclic prefix addition block 225, and an up-converter (UC) 230. The reception path 250 includes a down-converter (DC) 255, a cyclic prefix removal block 260, a Serial-to-Parallel (S-to-P) block 265, a size N Fast Fourier Transform (FFT) block 270, a Parallel-to-Serial (P-to-S) block 275, and a channel decoding and demodulation block 280.

[0074] In the transmission path 200, the channel coding and modulation block 205 receives a set of information bits, applies coding (such as Low Density Parity Check (LDPC) coding), and modulates the input bits (such as using Quadrature Phase Shift Keying (QPSK) or Quadrature Amplitude Modulation (QAM)) to generate a sequence of frequency-domain modulated symbols. The Serial-to-Parallel (S-to-P) block 210 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 block 215 performs IFFT operations on the N parallel symbol streams to generate a time domain output signal. The Parallel-to-Serial block 220 converts (such as multiplexes) parallel time domain output symbols from the Size N IFFT block 215 to generate a serial time domain signal. The cyclic prefix addition block 225 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 block 225 to an RF frequency for transmission via a wireless channel. The signal may also be filtered at a baseband before switching to the RF frequency.

[0075] 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 block 260 removes the cyclic prefix to generate a serial time domain baseband signal. The Serial-to-Parallel block 265 converts the time domain baseband signal into a parallel time domain signal. The Size N FFT block 270 performs an FFT algorithm to generate N parallel frequency-domain signals. The Parallel-to-Serial block 275 converts the parallel frequency-domain signal into a sequence of modulated data symbols. The channel decoding and demodulation block 280 demodulates and decodes the modulated symbols to recover the original input data stream.

[0076] 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.

[0077] Each of the components in FIGS. 2A and 2B may 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 block 270 and IFFT block 215 may be implemented as configurable software algorithms, in which the value of the size N may be modified according to the implementation.

[0078] 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 may 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.).

[0079] 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 may be combined, further subdivided or omitted, and additional components may be added according to specific requirements. Furthermore, FIGS. 2A and 2B are intended to illustrate examples of types of transmission and reception paths that may be used in a wireless network. Any other suitable architecture may be used to support wireless communication in a wireless network.

[0080] FIG. 3A illustrates an example UE 116 according to some embodiments of the disclosure. The embodiment of UE 116 shown in FIG. 3A is for illustration only, and UEs 111-115 of FIG. 1 may 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.

[0081] 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.

[0082] The RF transceiver 302 receives an incoming RF signal transmitted by a gNB of the wireless network 100 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).

[0083] 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.

[0084] The controller / processor 307 may 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 may 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 implementations, the controller / processor 307 includes at least one microprocessor or microcontroller.

[0085] 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 may move data into or out of the memory 311 as required by an execution process. In some implementations, 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.

[0086] The controller / processor 307 is also coupled to the input device(s) 309 and the display 310. An operator of UE 116 may 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 may include a random access memory (RAM), while another part of the memory 311 may include a flash memory or other read-only memory (ROM).

[0087] Although FIG. 3A illustrates an example of UE 116, various changes may be made to FIG. 3A. For example, various components in FIG. 3A may be combined, further subdivided or omitted, and additional components may be added according to specific requirements. As a specific example, the processor / controller 340 may 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 may be configured to operate as other types of mobile or fixed devices.

[0088] In some implementations, two or more UEs 116 may communicate directly using one or more sidelink channels (e.g., without using a base station as a medium for communication with each other). For example, the UE 116 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocol (which, for example, may include vehicle-to-vehicle (V2V) protocol, vehicle-to-infrastructure (V2I) protocol, etc.), mesh network, etc. In this case, the UE 116 may perform scheduling operations, resource selection operations, and / or other operations performed by the base station as described elsewhere herein. For example, the base station may configure the UE 116 via downlink control information (DCI), radio resource control (RRC) signaling, medium access control-control element (MAC-CE) or via system information (e.g., system information block (SIB)).

[0089] FIG. 3B illustrates an example gNB 102 according to some embodiments of the disclosure. The embodiment of gNB 102 shown in FIG. 3B is for illustration only, and other gNBs of FIG. 1 may 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 may include the same or similar structures as gNB 102.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] The controller / processor 378 may include one or more processors or other processing devices that control the overall operation of gNB 102. For example, the controller / processor 378 may 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 may also support additional functions, such as higher-level wireless communication functions. For example, the controller / processor 378 may 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 implementations, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0094] 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 may also support channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the disclosure. In some implementations, the controller / processor 378 supports communication between entities such as web RTCs. The controller / processor 378 may move data into or out of the memory 380 as required by an execution process.

[0095] 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 may 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 may 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 may 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.

[0096] The memory 380 is coupled to the controller / processor 378. A part of the memory 380 may include an RAM, while another part of the memory 380 may 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.

[0097] 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.

[0098] Although FIG. 3B illustrates an example of gNB 102, various changes may be made to FIG. 3B. For example, gNB 102 may include any number of each component shown in FIG. 3A. As a specific example, the access point may include many backhaul or network interfaces 382, and the controller / processor 378 may 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 may include multiple instances of each (such as one for each RF transceiver).

[0099] Those skilled in the art will understand that, "terminal" and "terminal device" as used herein include not only devices with wireless signal receiver which have no transmitting capability, but also devices with receiving and transmitting hardware which may carry out bidirectional communication on a bidirectional communication link. Such devices may include cellular or other communication devices with single-line displays or multi-line displays or cellular or other communication devices without multi-line displays; a PCS (personal communications service), which may combine voice, data processing, fax and / or data communication capabilities; a PDA (Personal Digital Assistant), which may include a radio frequency receiver, a pager, an internet / intranet access, a web browser, a notepad, a calendar and / or a GPS (Global Positioning System) receiver; a conventional laptop and / or palmtop computer or other devices having and / or including a radio frequency receiver. "Terminal" and "terminal device" as used herein may be portable, transportable, installed in vehicles (aviation, sea transportation and / or land), or suitable and / or configured to operate locally, and / or in distributed form, operate on the earth and / or any other position in space. "Terminal" and "terminal device" as used herein may also be a communication terminal, an internet terminal, a music / video playing terminal, such as a PDA, a MID (Mobile Internet Device) and / or a mobile phone with music / video playing functions, a smart TV, a set-top box and other devices.

[0100] With the rapid development of information industry, especially the increasing demand from mobile Internet and internet of things (IoT), it brings unprecedented challenges to the future mobile communication technology. In order to meet the unprecedented challenges, the communication industry and academia have carried out extensive research on the fifth generation (5G) mobile communication technology to face the 2020s. At present in ITU report ITU-R M.[IMT.VISION], the framework and overall goals of the future 5G has been discussed, in which the demand outlook, application scenarios and important performance indicators of 5G are described in detail. With respect to new requirements in 5G, ITU report ITU-R M.[IMT.FUTURE TECHNOLOGY TRENDS] provides information related to the technology trends of 5G, aiming at solving significant problems such as significantly improved system throughput, consistent user experience, scalability to support IoT, delay, energy efficiency, cost, network flexibility, support of emerging services and flexible spectrum utilization. In 3GPP (3rd Generation Partnership Project), the first stage of 5G is already in progress. To support more flexible scheduling, the 3GPP decides to support variable hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback delay in 5G. In existing Long Term Evolution (LTE) systems, a time from reception of downlink data to uplink transmission of HARQ-ACK is fixed. For example, in Frequency Division Duplex (FDD) systems, the delay is 4 subframes. In Time Division Duplex (TDD) systems, a HARQ-ACK feedback delay is determined for a corresponding downlink subframe based on an uplink and downlink configuration. In 5G systems, whether FDD or TDD systems, for a determined downlink time unit (for example, a downlink slot or a downlink mini slot; for another example, a PDSCH time unit), the uplink time unit (for example, a PUCCH time unit) that may feedback HARQ-ACK is variable. For example, the delay of HARQ-ACK feedback may be dynamically indicated by physical layer signaling, or different HARQ-ACK delays may be determined based on factors such as different services or user capabilities.

[0101] The 3GPP has defined three directions of 5G application scenarios-eMBB (enhanced mobile broadband), mMTC (massive machine-type communication) and URLLC (ultra-reliable and low-latency communication). The eMBB scenario aims to further improve data transmission rate on the basis of the existing mobile broadband service scenario, so as to enhance user experience and pursue ultimate communication experience between people. mMTC and URLLC are, for example, the application scenarios of the Internet of Things, but their respective emphases are different: mMTC being mainly information interaction between people and things, while URLLC mainly reflecting communication requirements between things.

[0102] In some cases, the network may not understand the channel state of the UE in real time. At this time, how to obtain channel state information to ensure the reliability of transmission is a problem that needs to be solved. Therefore, an enhanced uplink control information transmission method is needed.

[0103] Embodiments of the disclosure provide a method performed by a terminal, a terminal, a method performed by a base station, a base station, and a non-transitory computer-readable storage medium in a wireless communication system. For example, the method or apparatus can solve at least the above technical problems. Hereinafter, various example embodiments of the disclosure will be described in detail with reference to the accompanying drawings.

[0104] In the example embodiments of the disclosure, for the convenience of description, a first transceiving node and a second transceiving node are defined. For example, the first transceiving node may be a base station, and the second transceiving node may be a UE. For another example, the example embodiments of the disclosure may be applicable to the scenario of sidelink communication, in which case, the first transceiving node may be a UE, and the second transceiving node may be another UE. Therefore, the first transceiving node and the second transceiving node may each be any suitable communication node. In the following description, the base station is taken as an example (but not limited thereto) to illustrate the first transceiving node, and the UE is taken as an example (but not limited thereto) to illustrate the second transceiving node.

[0105] In describing a wireless communication system and in the disclosure described below, transferring methods (or configuration methods) of higher layer signaling or higher layer signals may be signal transferring methods for transferring information from a base station to a terminal over a downlink (DL) data channel of a physical layer or from a terminal to a base station over an uplink (UL) data channel of a physical layer, and examples of the signal transferring methods may include signal transferring methods for transferring information via Radio Resource Control (RRC) signaling, Packet Data Convergence Protocol (PDCP) signaling, or a Medium Access Control (MAC) Control Element (CE).

[0106] In the following description of the example embodiments of the disclosure, higher layer signaling may be signaling corresponding to at least one or a combination of one or more of the following signaling.

[0107] - MIB (master information block)

[0108] - SIB (system information block) or SIB X (X = 1,2, ...)

[0109] - RRC signaling

[0110] - MAC CE

[0111] Physical layer (Layer 1 (L1)) signaling may be signaling corresponding to at least one or a combination of one or more of the following signaling.

[0112] - PDCCH (physical downlink control channel)

[0113] - DCI (downlink control information)

[0114] - UE-specific DCI

[0115] - group common DCI

[0116] - common DCI (e.g., multicast DCI)

[0117] - scheduling DCI (e.g., DCI for scheduling downlink or uplink data)

[0118] - non-scheduling DCI (e.g., DCI other than DCI for scheduling downlink or uplink data)

[0119] - PUCCH (physical uplink control channel)

[0120] - UCI (uplink control information)

[0121] - Paging

[0122] - PRACH (physical random access channel)

[0123] - RAR (random access response)

[0124] In the example embodiments of the disclosure, uplink control signaling may include physical layer signaling and / or higher layer signaling. As described above, the physical layer signaling may include UCI and / or PUCCH and / or PRACH, and the higher layer signaling may include RRC signaling and / or a MAC CE.

[0125] In the example embodiments of the disclosure, downlink control signaling may include physical layer signaling and / or higher layer signaling. As mentioned above, the physical layer signaling may include one or more of PDCCH, DCI, UE-specific DCI, group common DCI, common DCI, scheduling DCI (e.g., DCI for scheduling downlink or uplink data), non-scheduling DCI, paging, and RAR, and the higher layer signaling may include one or more of a MIB, a SIB or SIB X (X = 1, 2, ...), RRC signaling or a MAC CE. Therefore, "configuring or indicating X through downlink control signaling" will be understood as configuring or indicating X through physical layer signaling, or configuring or indicating X through higher layer signaling, or configuring or indicating X through a combination of higher layer signaling and physical layer signaling.

[0126] FIG. 4 illustrates a block diagram of a first transceiving node 400 according to some example embodiments of the disclosure.

[0127] Referring to FIG. 4, the first transceiving node 400 may include a transceiver 401 and a controller 402.

[0128] The transceiver 401 may be configured to transmit first data and / or first control signaling to a second transceiving node, and / or receive second data and / or second control signaling from the second transceiving node.

[0129] The controller 402 may be an application specific integrated circuit or at least one processor. The controller 402 may be configured to control the overall operation of the first transceiving node 400, including controlling the transceiver 401 to transmit the first data and / or the first control signaling to the second transceiving node, and / or receive the second data and / or the second control signaling from the second transceiving node.

[0130] In some implementations, the controller 402 may be configured to perform one or more of operations in methods of various example embodiments described below, for example, operations that may be performed by a base station.

[0131] In the following description, the base station is taken as an example (but not limited thereto) to illustrate the first transceiving node, and the UE is taken as an example (but not limited thereto) to illustrate the second transceiving node. Downlink data (but not limited thereto) is used to illustrate the first data. Downlink control signaling (but not limited thereto) is used to illustrate the first control signaling. Uplink control signaling (but not limited thereto) is used to illustrate the second control signaling.

[0132] Herein, depending on the network type, the term "base station" or "BS" may refer to any component (or a set of components) configured to provide wireless access to a network, such as a Transmission Point (TP), a Transmission and Reception Point (TRP), an evolved base station (eNodeB or eNB), a 5G base station (gNB), a macrocell, a femtocell, a WiFi access point (AP), or other wireless network devices. Base stations may provide wireless access in accordance with one or more wireless communication protocols, e.g., 5G 3GPP new radio (NR) interface / access, Long Term Evolution (LTE), LTE advanced (LTE-A), High Speed Packet Access (HSPA), Wi-Fi 802.11a / b / g / n / ac, etc.

[0133] FIG. 5 illustrates a block diagram of a second transceiving node according to some embodiments of the disclosure.

[0134] Referring to FIG. 5, the second transceiving node 500 may include a transceiver 501 and a controller 502.

[0135] The transceiver 501 may be configured to receive first data and / or first control signaling from the first transceiving node, and transmit second data and / or second control signaling to the first transceiving node in a determined time unit.

[0136] The controller 502 may be an application specific integrated circuit or at least one processor. The controller 502 may be configured to control the overall operation of the second transceiving node and control the second transceiving node to implement the methods proposed in the example embodiments of the disclosure. For example, the controller 502 may be configured to determine the second data and / or the second control signaling and a time unit for transmitting the second data and / or the second control signaling based on the first data and / or the first control signaling, and control the transceiver 501 to transmit the second data and / or the second control signaling to the first transceiving node in the determined time unit.

[0137] In some implementations, the controller 502 may be configured to perform one or more of operations in methods of various example embodiments described below, for example, operations that may be performed by a terminal (UE).

[0138] In implementations described in connection with FIG. 4 or 5, the first data may be data transmitted by the first transceiving node to the second transceiving node. In the following examples, downlink data carried by a PDSCH (Physical Downlink Shared Channel) is taken as an example (but not limited thereto) to illustrate the first data.

[0139] In implementations described in connection with FIG. 4 or 5, the second data may be data transmitted by the second transceiving node to the first transceiving node. In the following examples, uplink data carried by a PUSCH (Physical Uplink Shared Channel) is taken as an example (but not limited thereto) to illustrate the second data.

[0140] In implementations described in connection with FIG. 4 or 5, the first control signaling may be control signaling transmitted by the first transceiving node to the second transceiving node. In the following examples, downlink control signaling is taken as an example (but not limited thereto) to illustrate the first control signaling. The downlink control signaling may be DCI (downlink control information) carried by a PDCCH (Physical Downlink Control Channel) and / or control signaling (e.g., higher signaling) carried by a PDSCH (Physical Downlink Shared Channel). For example, the DCI may be UE specific DCI, and the DCI may also be common DCI. The common DCI may be DCI common to a part of UEs, such as group common DCI, and the common DCI may also be DCI common to all of UEs in a serving cell (e.g., cell common DCI). The DCI may also be multicast DCI or broadcast DCI. The DCI may be uplink DCI (e.g., DCI for scheduling a PUSCH) and / or downlink DCI (e.g., DCI for scheduling a PDSCH).

[0141] It should be noted that in the description of the example embodiments of the disclosure, the following terms may be used interchangeably:

[0142] - DCI

[0143] - DCI format

[0144] - PDCCH

[0145] - grant

[0146] - dynamic grant.

[0147] In implementations described in connection with FIG. 4 or 5, the second control signaling may be control signaling transmitted by the second transceiving node to the first transceiving node. In the following examples, uplink control signaling is taken as an example (but is not limited thereto) to illustrate the second control signaling. The uplink control signaling may be UCI (Uplink Control Information) carried by a PUCCH (Physical Uplink Control Channel) and / or control signaling (e.g., higher signaling) carried by a PUSCH (Physical Uplink Shared Channel). A type of UCI may include one or more of: HARQ-ACK information, SR (Scheduling Request), LRR (Link Recovery Request), CSI (Chanel State Information), CG (Configured Grant) UCI, or UTO (unused transmission occasion)-UCI. In the example embodiments of the disclosure, when UCI is carried by a PUCCH, the UCI may be used interchangeably with the PUCCH.

[0148] In some implementations, a PUCCH with an SR may be a PUCCH with a positive SR and / or a negative SR. The SR may be the positive SR and / or the negative SR.

[0149] In some implementations, the CSI report may be Part 1 CSI and / or Part 2 CSI.

[0150] In implementations described in connection with FIG. 4 or 5, a time unit where the first transceiving node transmits the first data and / or the first control signaling may be a downlink time unit, such as a downlink slot.

[0151] In implementations described in connection with FIG. 4 or 5, a time unit where the second transceiving node transmits the second data and / or the second control signaling may be an uplink time unit, such as an uplink slot or PUCCH slot or PCell (primary cell) slot or PUCCH slot on PCell. The "PUCCH slot" may be understood as a PUCCH transmission slot.

[0152] In the example embodiments of the disclosure, a time unit (e.g., a downlink time unit or an uplink time unit) may be one or more slots, one or more sub-slots, one or more OFDM symbols, one or more spans, one or more subframes, one or more frames or one or more half frames.

[0153] FIG. 6 illustrates a flowchart of a method 600 performed by a base station according to some example embodiments of the disclosure.

[0154] Referring to FIG. 6, in operation S610, the base station transmits downlink data and / or downlink control signaling. For example, the base station transmits downlink data and / or downlink control signaling to the UE in a time unit.

[0155] In operation S620, the base station receives uplink data and / or uplink control signaling from the UE. For example, the base station receives the uplink data and / or the uplink control signaling from the UE in a time unit.

[0156] In some implementations, operations S610 and / or S620 may be performed based on the methods described according to various example embodiments of the disclosure (e.g., various methods / manners described below).

[0157] In some implementations, the method 600 may omit one or more of operation S610 or S620, or may include additional operations, for example, the operations performed by the base station based on the methods described according to various example embodiments of the disclosure (e.g., various methods / manners described below).

[0158] FIG. 7 illustrates a flowchart of a method 700 performed by a UE according to example embodiments of the disclosure.

[0159] Referring to FIG. 7, in operation S710, the UE may receive downlink (DL) data (e.g., downlink data carried by PDSCH(s)) and / or downlink control signaling from a base station. For example, the UE may receive the downlink data and / or the downlink control signaling from the base station based on predefined rules and / or received configuration parameters.

[0160] Optionally, in operation S720, the UE determines uplink (UL) data and / or uplink control signaling, and / or a transmission power of the uplink data and / or the uplink control signaling, and / or a time unit based on the downlink data and / or the downlink control signaling.

[0161] In operation S730, the UE transmits the uplink data and / or the uplink control signaling to the base station. For example, the UE transmits the uplink data and / or the uplink control signaling to the base station in the determined time unit. For another example, the UE transmits the uplink data and / or the uplink control signaling to the base station in the determined time unit according to the determined transmission power.

[0162] [HARQ / scheduling general timing]

[0163] In some implementations, operations S710 and / or S720 and / or S730 may be performed based on the methods described according to various example embodiments of the disclosure (e.g., various methods / manners described below).

[0164] In some implementations, the method 700 may omit one or more of operation S710, S720 or S730, or may include additional operations, for example, the operations performed by the UE (terminal) based on the methods described according to various example embodiments of the disclosure (e.g., various methods / manners described below).

[0165] In some implementations, acknowledgement / negative acknowledgement (ACK / NACK) for downlink transmission(s) may be performed through HARQ-ACK.

[0166] Some examples of uplink transmission timing will be described below with reference to FIGS. 8A-8C.

[0167] In an example, the UE receives a DCI format and receives a PDSCH according to time domain resources indicated by the DCI format. For example, a parameter K0 may be used to indicate a time unit interval (offset) between the PDSCH scheduled by the DCI format and the DCI format (e.g., a PDCCH carrying the DCI format), where K0 may be in units of slots, for example, PDSCH slots (e.g., slots of an active BWP in a serving cell where PDSCH is located). For example, FIG. 8A gives an example in which K0=1. In the example illustrated in FIG. 8A, the time unit interval from the PDSCH scheduled by the DCI format to the PDCCH carrying the DCI format is one slot. In the example embodiments of the disclosure, "the UE receives a DCI / DCI format" may refer to that "the UE detects the DCI / DCI format."

[0168] In another example, the UE receives a DCI format and transmits a PUSCH based on time domain resources indicated by the DCI format. For example, a timing parameter K2 may be used to indicate a time unit interval between the PUSCH scheduled by the DCI format and the DCI format (e.g., a PDCCH carrying the DCI format), where K2 may be in units of slots, for example, PUSCH slots (e.g., slots of an active BWP in a serving cell where PUSCH is located). For example, FIG. 8B gives an example in which K2 = 1. In the example illustrated in FIG. 8B, the time unit interval between the PUSCH scheduled by the DCI format and the PDCCH carrying the DCI is one slot. K2 may also be used to indicate a time unit interval between a PDCCH for activating CG (configured grant) PUSCH(s) and the first activated CG PUSCH (e.g., CG PUSCH transmission occasion). In examples of the disclosure, unless otherwise specified, the PUSCH may be a dynamically scheduled PUSCH (e.g., scheduled by DCI) (e.g., which may be referred to as DG (dynamic grant) PUSCH, in the example embodiments of the disclosure) and / or a PUSCH not scheduled by DCI (e.g., CG PUSCH).

[0169] In yet another example, the UE receives a PDSCH, and may transmit HARQ-ACK information for the PDSCH reception in a PUCCH in a time unit (e.g., uplink time unit). For example, a timing parameter (which may also be referred to as a timing value) K1 (e.g., the higher layer parameter dl-DataToUL-ACK) may be used to indicate a time unit interval between the PUCCH with the HARQ-ACK information for the PDSCH reception and the PDSCH, and K1 may be in units of time units (e.g., uplink time units, such as PUCCH time units), such as slots or sub-slots. For example, FIG. 8A gives an example in which K1 = 3. In the example illustrated in FIG. 8A, the time unit interval between the PUCCH with the HARQ-ACK information for the PDSCH reception and the PDSCH is 3 slots. It should be noted that in the example embodiments of the disclosure, the timing parameter K1 may be used interchangeably with a time unit offset K1, the timing parameter K0 may be used interchangeably with a time unit offset K0, and the timing parameter K2 may be used interchangeably with a time unit offset K2.

[0170] The PDSCH may be a PDSCH scheduled by DCI and / or a SPS (semi-persistent scheduling) PDSCH. The UE periodically receives the SPS PDSCH after the SPS PDSCH is activated by the DCI. In examples of the disclosure, the SPS PDSCH may be equivalent to a PDSCH not scheduled by the DCI / PDCCH. After the SPS PDSCH is released (deactivated), the UE will no longer receive the SPS PDSCH.

[0171] In the example embodiments of the disclosure, HARQ-ACK may be HARQ-ACK for a SPS PDSCH reception (e.g., HARQ-ACK not indicated by DCI) and / or HARQ-ACK indicated by a DCI format (e.g., HARQ-ACK for a PDSCH reception scheduled by a DCI format, where the PDSCH reception may be a PDSCH reception providing a transport block (TB) with enabled HARQ-ACK information). Or, for example, HARQ-ACK may be HARQ-ACK for a DCI format without scheduling PDSCH.

[0172] In yet another example, the UE receives DCI (e.g., DCI indicating SPS PDSCH release (deactivation)), and may transmit HARQ-ACK information for the DCI in a PUCCH in a time unit (e.g., uplink time unit). For example, the timing parameter K1 may be used to indicate a time unit interval between the PUCCH with the HARQ-ACK information for the DCI and the DCI, and K1 may be in units of time units (e.g., uplink time units), such as slots or sub-slots. For example, FIG. 8C gives an example in which K1 = 3. In the example of FIG. 8C, the time unit interval between the PUCCH with the HARQ-ACK information for the DCI and the DCI is 3 slots. For example, the timing parameter K1 may be used to indicate a time unit interval between a PDCCH reception carrying DCI indicating SPS PDSCH release (deactivation) and the PUCCH feeding back HARQ-ACK for the PDCCH reception.

[0173] In some implementations, the UE may report (or signal / transmit) a UE capability to the base station or indicate the UE capability in operation S720. For example, the UE reports (or signals / transmits) the UE capability to the base station by transmitting a PUSCH. In this case, the PUSCH transmitted by the UE includes the UE capability information. A UE capability may be a UE capability parameter, or a value of a UE capability parameter.

[0174] In some implementations, the base station may configure higher layer signaling for the UE based on a UE capability received from the UE.

[0175] In some implementations, downlink channels (downlink resources) may include PDCCHs and / or PDSCHs. Uplink channels (uplink resources) may include PUCCHs and / or PUSCHs..

[0176] It should be noted that, unless the context clearly indicates otherwise, all or one or more of the methods, steps or operations described in the example embodiments of the disclosure may be specified by protocols and / or configured by higher layer signaling and / or indicated by dynamic signaling. The dynamic signaling may be a PDCCH and / or DCI and / or a DCI format. For example, a SPS PDSCH and / or CG PUSCH may be dynamically indicated by a corresponding activated DCI / DCI format / PDCCH. All or one or more of the described methods, steps and operations may be optional. For example, if a certain parameter (e.g., parameter X) is configured, the UE performs a certain approach (e.g., approach A), otherwise (if the parameter, e.g., parameter X, is not configured), the UE performs another approach (e.g., approach B). Unless otherwise specified, the parameters in the example embodiments of the disclosure may be higher layer parameters. For example, the higher layer parameters may be parameters configured or indicated by higher layer signaling (e.g., RRC signaling).

[0177] It should be noted that in the description of the example embodiments of the disclosure, a PCell (Primary Cell) or PSCell (Primary Secondary Cell) in the example embodiments of the disclosure may be used interchangeably with a cell having a PUCCH. A serving cell may be used interchangeably with a cell.

[0178] It should be noted that in the description of the example embodiments of the disclosure, methods for downlink in the example embodiments of the disclosure may also be applicable to uplink, and methods for uplink may also be applicable to downlink. For example, a PDSCH may be replaced with a PUSCH, a SPS PDSCH may be replaced with a CG PUSCH, and downlink symbols may be replaced with uplink symbols, so that methods for downlink may be applicable to uplink.

[0179] It should be noted that in the description of the example embodiments of the disclosure, methods applicable to scheduling multiple PDSCHs / PUSCHs in the example embodiments of the disclosure may also be applicable to a PDSCH / PUSCH transmission with repetitions. For example, a PDSCH / PUSCH of multiple PDSCHs / PUSCHs may be replaced with a repetition of multiple repetitions of the PDSCH / PUSCH transmission.

[0180] It should be noted that in the description of the example embodiments of the disclosure, "configured with and / or indicated a transmission with repetitions" may be understood that a number of the repetitions of the transmission is greater than 1. For example, "configured with and / or indicated a PUCCH transmission with repetitions" may be understood that "the PUCCH transmission is repeated on more than one slot / sub-slot". "Not configured with and / or indicated a transmission with repetitions" may be understood that a number of the repetitions of the transmission is equal to 1. For example, "not configured with and / or indicated a PUCCH transmission with repetitions" may be understood that "a number of the repetitions of the PUCCH transmission is equal to 1". For example, the UE may be configured with a parameter related to a number of repetitions of a PUCCH transmission; when the parameter is greater than 1, it may mean that the UE is configured with a PUCCH transmission with repetitions, and the UE may repeat the PUCCH transmission on time units (e.g., slots); when the parameter is equal to 1, it may mean that the UE is not configured with a PUCCH transmission with repetitions. For example, the PUCCH transmission with repetitions may include only one type of UCI. If the PUCCH is configured with repetitions, in the description of the example embodiments of the disclosure, a repetition of the multiple repetitions of the PUCCH may be used as a PUCCH (or a PUCCH resource), or all of the repetitions of the PUCCH may be used as a PUCCH (or a PUCCH resource), or a specific repetition of the multiple repetitions of the PUCCH may be used as a PUCCH (or a PUCCH resource).

[0181] It should be noted that in the description of the example embodiments of the disclosure, when a PDCCH and / or DCI and / or a DCI format schedules multiple PDSCHs / PUSCHs, the PDSCHs / PUSCHs may be multiple PDSCHs / PUSCHs on a same serving cell and / or multiple PDSCHs / PUSCHs on different serving cells.

[0182] It should be noted that in the example embodiments of the disclosure, multiple approaches / methods may be combined in any order. In a combination, an approach / method may be performed one or more times, or an approach / method may not be performed.

[0183] It should be noted that multiple steps in the method of the disclosure may be implemented in any order.

[0184] It should be noted that in the description of the example embodiments of the disclosure, "canceling a transmission" may mean canceling the transmission of the entire uplink channel and / or cancelling the transmission of a part of the uplink channel.

[0185] It should be noted that in the description of the example embodiments of the disclosure, "an order from small to large" (e.g., an ascending order) may be replaced with "an order from large to small" (e.g., a descending order), and / or "an order from large to small" (e.g., a descending order) may be replaced with "an order from small to large" (e.g., an ascending order).

[0186] It should be noted that in the description of the example embodiments of the disclosure, a PUCCH / PUSCH with / including / with A may be understood as a PUCCH / PUSCH only carrying / including / with A, and may also be understood as a PUCCH / PUSCH with / including / with at least A.

[0187] It should be noted that in the description of the example embodiments of the disclosure, "slot" may be replaced with "sub-slot" or "time unit".

[0188] It should be noted that in the description of the example embodiments of the disclosure, a time interval (or time unit interval) between a first physical channel and a second physical channel may be understood as a time interval (or time unit interval) between an end position (or end symbol) of the first physical channel and a starting position (or starting symbol) of the second physical channel, wherein the first physical channel is earlier than the second physical channel, or, a time interval (or time unit interval) between a time unit where the first physical channel is located and a time unit where the second channel is located. The time unit in which the physical channel is located may be understood as a time unit that overlaps with the end position (or end symbol) of the physical channel or a time unit that overlaps with the starting position (or starting symbol) of the physical channel.

[0189] In the description of example embodiments of the disclosure, the following descriptions may be used interchangeably:

[0190] - A time interval between a first physical channel and a second physical channel is a first time

[0191] - A time interval from a first physical channel to a second physical channel is a first time

[0192] - A time interval from a second physical channel to a first physical channel is a first time

[0193] - A first physical channel is earlier than a second physical channel by a first time or a first physical channel is later than a second physical channel by a first time

[0194] - A second physical channel is later than (is after)a first physical channel by a first time or a second physical channel is earlier than (is before) a first physical channel by a first time

[0195] In the description of example embodiments of the disclosure, the following descriptions may be used interchangeably:

[0196] - A time interval between a first physical channel and a second physical channel is greater than (or not less than) a first time

[0197] - A time interval from a first physical channel to a second physical channel is greater than (or not less than) a first time

[0198] - A time interval from a second physical channel to a first physical channel is greater than (or not less than) the first time

[0199] - A first physical channel is earlier than a second physical channel by more than (or not less than) the first time, or the first physical channel is later than the second physical channel by more than (or not less than) the first time

[0200] - A second physical channel is later than the first physical channel by more than (or not less than) the first time or the second physical channel is earlier than the first physical channel by more than (or not less than) the first time

[0201] - The first symbol of a first physical channel is no earlier than (not before) symbol L1 (symbol L1 may be defined as a next symbol starting after the last symbol of a second channel), or the first symbol of the second physical channel is no earlier than (not before) symbol L2 (symbol L2 may be defined as a next symbol starting after the last symbol of the first channel)

[0202] It should be noted that in the description of the example embodiments of the disclosure, "greater than (or not less than)" may be replaced with "less than (or not greater than)".

[0203] It should be noted that in the description of the timing / timeline relationship (or time relationship) of the example embodiments of the disclosure, "a physical channel" may be understood as "the start of the physical channel", "the first symbol of the physical channel", or "the start of the first symbol of the physical channel", and these terms may be used interchangeably. "A physical channel" may also be understood as "the end of the physical channel", "the last symbol of the physical channel", or "the end of the last symbol of the physical channel", and these terms may be used interchangeably.

[0204] It should be noted that in an example embodiment of the disclosure, the time of a physical uplink channel may be a time when the UE actually transmits the physical uplink channel, for example, the time considering TA (timing advance).

[0205] It should be noted that in the description of the example embodiments of the disclosure, "performing a predefined method (or step) if a predefined condition is satisfied"and "not performing the predefined method (or step) if the predefined condition is not satisfied" may be used interchangeably. "Not performing a predefined method (or step) if a predefined condition is satisfied" and "performing the predefined method (or step) if the predefined condition is not satisfied" may be used interchangeably.

[0206] It should be noted that in the description of the example embodiments of the disclosure, "configured with a parameter (or information)", "provided with a parameter (or information)", "configured with a parameter of a specific value (e.g., 'enable')" and "receiving a parameter (or information)" may be used interchangeably. Being configured with one or more parameters may refer to being configured with a parameter list in an IE, the parameter list including one or more parameters. Being configured with multiple parameters may also mean that the parameters are configured in multiple IEs, respectively.

[0207] It should be noted that in the description of the example embodiments of the disclosure, "PUCCH with HARQ-ACK information" and "PUCCH including HARQ-ACK information" may be used interchangeably.

[0208] It should be noted that in the description of the example embodiments of the disclosure, "HARQ-ACK", "HARQ-ACK feedback", "HARQ-ACK information", "HARQ-ACK information bit" and "HARQ-ACK codebook" may be used interchangeably.

[0209] It should be noted that in the description of the example embodiments of the disclosure, "determining HARQ-ACK information bits"and "generating HARQ-ACK information bits" may be used interchangeably.

[0210] It should be noted that in the description of the example embodiments of the disclosure, "uplink" and "downlink" may be used interchangeably, "channel", "channel transmission", "physical channel" and "physical channel transmission" may be used interchangeably, and "physical channel" and "physical channel resource"may be used interchangeably. "PUCCH" and "PUCCH resource" may be used interchangeably, and "PUSCH" and "PUSCH resource" may be used interchangeably. The terms "channel" and "signal" may be used interchangeably.

[0211] It should be noted that in the description of the example embodiments of the disclosure, two or more physical channels overlap may mean that the two or more physical channels overlap in the time domain and / or overlap in the frequency domain.

[0212] It should be noted that in the description of the example embodiments of the disclosure, the method applicable to RRC parameters may also be used for MAC CEs, and vice versa.

[0213] It should be noted that the embodiments of the disclosure may be applicable to one serving cell or multiple serving cells.

[0214] It should be noted that the embodiments of the disclosure may be applicable to one BWP or multiple BWPs.

[0215] It should be noted that in the description of the example embodiments of the disclosure, "first and second" and "two" may be used interchangeably. For example, "first channel and second channel" may refer to two channels. In the description of example embodiments of the disclosure, "first and second" may also refer to two or more. For example, "first channel and second channel" may also refer to two or more channels.

[0216] It should be noted that in the description of the example embodiments of the disclosure, the behavior of the UE (or base station) and the corresponding conditions of the behavior of the UE (or base station) may be used interchangeably. For example, "the UE receives (or is configured with) first information (or parameter)" and "if the UE is configured with the first information (or parameter)" may be used interchangeably.

[0217] It should be noted that in the description of the example embodiments of the disclosure, receiving information carried by a DCI format may be understood as detecting a DCI format that carries the information.

[0218] It should be noted that in the example embodiments of the disclosure, the terms "index", "identification", "identifier", and "number" may be used interchangeably.

[0219] It should be noted that satisfying a condition in the embodiments of the disclosure may be understood as satisfying at least the condition. That is, this condition and other conditions may be satisfied at the same time. For example, "satisfying a specific condition" in the embodiment of the disclosure may be replaced with "at least satisfying the specific condition".

[0220] It should be noted that the UE may support the method described in the embodiments of the disclosure through capability reporting, and / or may enable the method described in the embodiments of the disclosure through higher layer signaling parameter configuration.

[0221] It should be noted that in the description of the example embodiments of the disclosure, the "beam" may be understood as a transmission configuration indicator (TCI) state / reference signal / channel / spatial relationship; or a TCI state ID / reference signal ID / channel ID / spatial relationship ID; or a spatial filter associated with a TCI state / reference signal / channel / spatial relationship; Or a spatial filter associated with a TCI state ID / reference signal ID / channel ID / spatial relationship ID. In example embodiments of the disclosure, the following descriptions may be used interchangeably:

[0222] - beam;

[0223] - spatial filter;

[0224] - spatial domain filter;

[0225] - spatial domain transmission filter;

[0226] - spatial setting;

[0227] - quasi co-location (QCL) assumption;

[0228] - QCL parameter (QCL-type (e.g., type D (typeD)) parameter / reference signal);

[0229] - TCI state;

[0230] - unified TCI state;

[0231] - spatial relationship;

[0232] - RS (reference signal);

[0233] - information related to sounding reference signal (SRS) (e.g., SRS resource indication (SRI)).

[0234] In some implementations, the RS may be an RS corresponding to a beam. For example, the RS may be CSI-RS or SSB.

[0235] In some examples, the UE may be configured or provided with an SRS resource set index parameter (e.g., SRS_resource_set_index) with two different values (e.g., value 0 and value 1). The first SRS resource set (the SRS resource set index parameter value is equal to 0) may correspond to a CORESET pool index parameter with a value of 0, and the other SRS resource set (SRS resource set index parameter value is equal to 1) may correspond to the CORESET pool index parameter with a value of 1.

[0236] In embodiments of the disclosure, the term "panel" may refer to a group of antenna ports or an antenna group. An uplink transmission configuration indicator (TCI) of each antenna panel may be used to indicate a beam for the antenna panel, which may be a beam associated with the indicated reference signal ID. An SRS set ID may be used to indicate the antenna panel ID, where each antenna panel is associated with one SRS set.

[0237] In some implementations, a first physical channel and a second physical channel may need to satisfy a certain timeline relationship / timeline or timing / timeline condition. The examples of the timeline between the first physical channel and the second physical channel according to example embodiments of the disclosure will be described below in conjunction with FIG. 9 and FIG. 10. It may be understood that although the timeline relationships are described separately in FIG. 9 and FIG. 10, the timeline relationships are consistent and may be combined with each other. Here, examples of the first physical channel may include at least one of PUCCH, PUSCH, PDCCH, or PDSCH; examples of the second physical channel may include at least one of PUCCH, PUSCH, PDCCH, or PDSCH. In some examples, the first physical channel is a PUCCH and the second physical channel is a PDCCH. The first physical channel may also be replaced with a first physical signal, and examples of the first physical signal may include at least one of SSB, CSI-RS, DMRS, or SRS; the second physical channel may also be replaced with a second physical signal, and examples of the second physical signal may include at least one of SSB, CSI-RS, DMRS, or SRS.

[0238] In the embodiments of the disclosure, a CSI report configuration and / or a CSI report associated with / corresponding to the CSI report configuration may be based on AI / ML (artificial intelligent / machine learning). Herein, the term "AI / ML" may be used interchangeably with the term "AI / ML model" or "model". Optionally, the CSI report configuration and / or the CSI report associated with / corresponding to the CSI report configuration may be used for inference. Optionally, the CSI report configuration and / or the CSI report associated with / corresponding to the CSI report configuration may be used to report the inference result. In the disclosure, the inference may be AI / ML model-based inference. Optionally, the CSI report configuration and / or the CSI report configuration associated with / corresponding to CSI report may be for model monitoring. In the disclosure, the model monitoring may be monitoring of AI / ML models. Optionally, the CSI report configuration and / or the CSI report associated with / corresponding to the CSI report configuration may be used for training. In the disclosure, the training may be training of AI / ML models. Optionally, the CSI report configuration and / or the CSI report associated with / corresponding to the CSI report configuration may be for data collection. In the disclosure, the data collection may be data collection for AI / ML models.

[0239] Here, the CSI report configuration and / or the CSI report associated with / corresponding to the CSI report configuration may be applicable to a UE-side model. For example, when the UE side model is deployed / used, operations related to the CSI report configuration and / or the CSI report associated with / corresponding to the CSI report configuration may be used.

[0240] FIG. 9 shows a schematic diagram of a timeline relationship between a first physical channel and a second physical channel according to some example embodiments of the disclosure. In the example shown in FIG. 9, the timeline relationship between the first physical channel and the second physical channel is described using the transmission or reception time of the second physical channel (for example, time t2 in FIG. 9) as a reference.

[0241] Referring to FIG. 9, a time window W1 (e.g., time T_3) may be defined with reference to the time (transmission or reception time) (e.g., time t2) of the second physical channel. In particular, the start of the time window W1 may be a time (e.g. time t0) that is a second time (e.g. time T_2) before the time (the transmission or reception time) (e.g. time t2) of the second physical channel, i.e., a time that is earlier than the transmission time (transmission or reception time) (e.g. time t2) of the second physical channel by the second time (e.g. time T_2); The end of the time window W1 may be a time (e.g. time t1) that is a first time (e.g. time T_1) before the time (transmission or reception time) (e.g. time t2) of the second physical channel, i.e., a time (e.g. time t1) that is earlier than the time (transmission or reception time) (e.g. time t2) of the second physical channel by the first time (e.g. time T_1).

[0242] Referring to FIG. 9, the first time (for example, time T_1) may be the interval between time t1and time t2, i.e., t2-t1. The second time (e.g., time T_2) may be the interval between time t0and time t2, t2- t0. The third time (e.g., time T_3) may be the interval between time t0and time t1, i.e., t1- t0.

[0243] In some implementations, the timeline relationship between the first physical channel and the second physical channel may include: the first physical channel is in or before the end (e.g., time t1) of the time window W1 (timeline relationship Timeline1). For example, the time (transmission or reception time) of the first physical channel is in or before the end (e.g., time t1) of the time window W1.

[0244] In some implementations, the timeline relationship between the first physical channel and the second physical channel may include that the first physical channel is in or after the start (e.g., time t0) of the time window W1 (timeline relationship Timeline2). For example, the time (transmission or reception time) of the first physical channel is in or after the start (e.g., time t0) of the time window W1.

[0245] In some implementations, the timeline relationship between the first physical channel and the second physical channel may include: the first physical channel is within the time window W1. For example, the timeline relationship may be considered as a combination of the timeline relationship Timeline1 and the timeline relationship Timeline2. For example, the time (transmission or reception time) of the first physical channel is within the time window W1. That is, the timeline relationship Timeline1 and the timeline relationship Timeline2 are satisfied simultaneously.

[0246] For example, the first physical channel being within the time window W1 may include a case where the time (transmission or reception time) of the first physical channel overlaps with the start and / or the end of the time window W1.

[0247] In some implementations, the timeline relationship between the first physical channel and the second physical channel may include: the first physical channel is within the time window W1 and does not overlap with the start (e.g., time t0) and / or the end (e.g., time t1) of the time window W1. For example, the time (transmission or reception time) of the first physical channel is within the time window W1 and does not overlap with the start (e.g., time t0) and / or the end (e.g., time t1) of the time window W1.

[0248] In some implementations, "the first physical channel being in or before the end (e.g., time t1) of the time window W1" may refer to at least one of the following or be used interchangeably with one or more of the following:

[0249] - The first physical channel is earlier than or no later than a time (e.g., time t1) that is the first time (e.g., time T_1) before the transmission / reception (e.g., time t2) of the second physical channel

[0250] - The UE transmits / receives the first physical channel in or before a time (e.g., in time t1or before time t1) that is the first time (e.g., time T_1) before transmission / reception (e.g., time t2) of the second physical channel

[0251] - The time interval between the first physical channel and the second physical channel is not less than, or greater than or equal to the first time (for example, time T_1)

[0252] In some implementations, "the first physical channel being in or after the start (e.g., time t0) of the time window W1" may refer to at least one of the following or be used interchangeably with at least one of the following:

[0253] - The first physical channel is later than or no earlier than a time (e.g., time t0) that is the second time (e.g., time T_2) before the transmission / reception (e.g., time t2) of the second physical channel

[0254] - The UE transmits / receives the first physical channel in or after a time (e.g., in time t0or after time t0) that is the second time (e.g., time T_2) before the transmission / reception of the second physical channel (e.g., time t2)

[0255] - The time interval between the first physical channel and the second physical channel is less than or not greater than or equal to a second time (e.g., time T_2)

[0256] In some implementations, the second time (e.g., time T_2) is equal to the first time (e.g., time T_1) plus the third time (e.g., time T_3), i.e., the sum of the first time (e.g., time T_1) and the third time (e.g., time T_3). In some implementations, the second time (e.g., time T_2) is equal to the third time (e.g., time T_3), i.e., the first time (e.g., time T_1) is 0, the time t1is equal to the time t2, or the time t1overlaps with the time t2.

[0257] In some implementations, the UE does not expect that the first physical channel and the second physical channel do not satisfy the timeline relationship described in connection with FIG. 9. For example, the UE does not expect that the first physical channel is not within the time window W1. For another example, the UE does not expect that the first physical channel is after the end (e.g., time t1) of the time window W1. For still another example, the UE does not expect that the first physical channel is before the start (e.g., time t2) of the time window W1.

[0258] In some implementations, one or more of the first time (e.g., time T_1), the second time (e.g., time T_2), and the third time (e.g., time T_3) may be configured by higher layer signaling. Or, one or more of the first time (e.g., time T_1), the second time (e.g., time T_2), and the third time (e.g., time T_3) may be predefined values. Or, one or more of the first time (e.g., time T_1), the second time (e.g., time T_2), and the third time (e.g., time T_3) may be reported by the UE through a UE capability report.

[0259] In some implementations, the timeline relationship between the first physical channel and the second physical channel may be determined by one or more of the first time (e.g., time T_1), the second time (e.g., time T_2), and the third time (e.g., time T_3).

[0260] In some implementations, when the second physical channel is an uplink physical channel, the transmission time of the second physical channel (for example, time t2) may be the actual transmission time of the uplink physical channel, for example, the time considering the timing advance.

[0261] FIG. 10 shows a schematic diagram of a timeline relationship between the first physical channel and the second physical channel according to some example embodiments of the disclosure. In the example shown in FIG. 10, the timeline relationship between the first physical channel and the second physical channel is described using the transmission or reception time of the first physical channel (for example, time t3in FIG. 10) as a reference.

[0262] Referring to FIG. 10, a time window W2 (e.g., time T_11) may be defined with reference to the time (transmission or reception time) of the first physical channel (e.g., time t3). In particular, the start of the time window W2 may be a time (e.g. time t4) that is a thirteenth time (e.g. time T_13) after the time (transmission or reception time) (e.g. time t3) of the first physical channel, i.e., a time that is later than the time (transmission or reception time) (e.g. time t3) of the first physical channel by the thirteenth time (e.g. time T_13); the end of the time window W2 may be a time (e.g. time t5) that is twelfth time (e.g. time T_12) after the time (transmission or reception time) (e.g. time t3) of the first physical channel, i.e. a time that is later than the time (transmission or reception time) (e.g. time t3) of the first physical channel by the twelfth time (e.g. time T_12).

[0263] Referring to FIG. 9, the eleventh time (for example, time T_11) may be the interval between time t4and time t5, i.e., t5-t4. The twelfth time (e.g., time T_12) may be the interval between time t3and time t5, i.e., t5-t3. The thirteenth time (e.g., time T_13) may be the interval between time t4and time t3, i.e., t4-t3.

[0264] In some implementations, the timeline relationship between the first physical channel and the second physical channel may include that the second physical channel is in or after the start (e.g., time t4) of the time window W2 (timeline relationship Timeline3). For example, the time (transmission or reception time) of the second physical channel is after the start (e.g., time t4) or the start (e.g., time t4) of the time window W2.

[0265] In some implementations, the timeline relationship between the first physical channel and the second physical channel may include that the second physical channel is in or before the end (e.g., time t5) of the time window W2 (timeline relationship Timeline4). For example, the time (transmission or reception time) of the second physical channel is in or before the end (e.g., time t5) of the time window W2.

[0266] In some implementations, the timeline relationship between the first physical channel and the second physical channel may include that the second physical channel is within the time window W2. For example, the timeline relationship may be considered as a combination of timeline relationship Timeline3 and timeline relationship Timeline4. For example, the time (transmission or reception time) of the second physical channel is within the time window W2. That is, the timeline relationship Timeline3 and the timeline relationship Timeline4 are satisfied simultaneously.

[0267] For example, the second physical channel being within the time window W2 may include a case where the time (transmission or reception time) of the second physical channel overlaps with the start (e.g., time t4) and / or the end (e.g., time t5) of the time window W2.

[0268] In some implementations, the timeline relationship between the first physical channel and the second physical channel may include that the second physical channel is within the time window W2 and does not overlap with the start (e.g., time t4) and / or the end (e.g., time t5) of the time window W2. For example, the time (transmission or reception time) of the second physical channel is within the time window W2 and does not overlap with the start (e.g., time t4) and / or the end (e.g., time t5) of the time window W2.

[0269] In some implementations, the timeline relationship between the first physical channel and the second physical channel may include that the second physical channel is after the start (e.g., time t4) of the time window W2.

[0270] In some implementations, "the second physical channel being in or after the start (e.g., time t4) of the time window W2" may refer to at least one of the following, or be used interchangeably with at least one of the following:

[0271] - The second physical channel is later than or no earlier than a time (e.g., time t4) that is the thirteenth time (e.g., time T_13) after the transmission / reception (e.g., time t3) of the first physical channel

[0272] - The UE transmits / receives the second physical channel in or after a time (e.g., in time t4or after time t4) that is the thirteenth time (e.g., time T_13) after the transmission / reception (e.g., time t3) of the first physical channel

[0273] - The time interval between the first physical channel and the second physical channel is greater than or equal to or not less than the thirteenth time (for example, time T_13)

[0274] In some implementations, "the second physical channel being in or before the end (e.g., time t5) of the time window W2" may refer to at least one of the following, or be used interchangeably with at least one of the following:

[0275] - The second physical channel is earlier than or no later than a time (e.g., time t5) that is the twelfth time (e.g., time T_12) after the transmission / reception (e.g., time t3) of the first physical channel

[0276] - The UE transmits / receives the first physical channel in or before a time (e.g., in time t5or before time t5) a twelfth time (e.g., time t3) after the transmission / reception of the first physical channel

[0277] - The time interval between the first physical channel and the second physical channel is less than or not greater than or equal to a twelfth time (e.g., time T_12)

[0278] In some implementations, the twelfth time (e.g., time T_12) is equal to the eleventh time (e.g., time T_11) plus the thirteenth time (e.g., time T_13), i.e., the sum of the eleventh time (e.g., time T_11) and the thirteenth time (e.g., time T_13). In some implementations, the twelfth time (e.g., time T_12) is equal to the thirteenth time (e.g., time T_13), i.e., the eleventh time (e.g., time T _ 11) is 0, the time t4is equal to the time t5, or the time t4overlaps with the time t5.

[0279] In some implementations, the UE does not expect that the first physical channel and the second physical channel do not satisfy the timeline relationship described in connection with FIG. 10. For example, the UE does not expect that the second physical channel is not within the time window W2. For another example, the UE does not expect that the second physical channel is before the start (e.g., time t4) of the time window W2. For still another example, the UE does not expect that the first physical channel is before the start (e.g., time t4) of the time window W2.

[0280] In some implementations, one or more of the eleventh time (e.g., time T_11), the twelfth time (e.g., time T_12), and the thirteenth time (e.g., time T_13) may be configured by higher layer signaling. Or, one or more of the eleventh time (e.g., time T_11), the twelfth time (e.g., time T_12), and the thirteenth time (e.g., time T_13) may be predefined values. Or, one or more of the eleventh time (e.g., time T_11), the twelfth time (e.g., time T_12), and the thirteenth time (e.g., time T_13) may be reported by the UE through a UE capability report.

[0281] In some implementations, the timeline relationship between the first physical channel and the second physical channel may be determined by one or more of an eleventh time (e.g., time T_1 1), a twelfth time (e.g., time T_12), and a thirteenth time (e.g., time T_13).

[0282] In some implementations, when the first physical channel is an uplink physical channel, the transmission time of the first physical channel (for example, time t3) may be the actual transmission time of the uplink physical channel, for example, the time considering the timing advance.

[0283] Note that for convenience of description, the term "time window" is used to represent a period of time. It may be understood that the term "time window" may be used interchangeably with "time", "timer", "time duration", or similar terms.

[0284] In the description of the example embodiments of the disclosure, the time (transmission or reception time) of a physical channel may be understood as at least one of the following:

[0285] - The start of the transmission (transmission or reception) of the physical channel

[0286] - The end of the transmission (transmission or reception) of the physical channel

[0287] - The whole duration of the transmission (transmission or reception) of the physical channel

[0288] - The time unit (e.g., symbol, slot or sub-slot) in which the transmission (transmission or reception) of the physical channel starts

[0289] - The time unit (e.g., symbol, slot or sub-slot) in which the transmission (transmission or reception) of the physical channel ends

[0290] - The time unit (e.g., symbol, slot or sub-slot) in which the whole duration of the transmission (transmission or reception) of the physical channel is located

[0291] Continuing to refer to FIG. 7, in operation S710, the UE may receive first information from the base station, where the first information may be downlink control signaling. For example, the first information may be configuration information carried through higher layer signaling. The first information may be used to indicate configuration information related to second information and / or fourth information, where the second information may indicate (or notify) that the UE transmits the fourth information (e.g., the UE would transmit the fourth information; the UE intends to transmit the fourth information; the UE needs to transmit the fourth information; the UE initiates the transmission of the fourth information; or the UE would transmit the fourth information due to various events or reasons); The fourth information may include a report (or transmission) of beam related information. In some implementations, the second information may include positive second information or negative second information. For example, the positive second information may indicate that the UE transmits the fourth information (e.g., the UE would transmit the fourth information; the UE intends to transmit the fourth information; the UE needs to transmit the fourth information; the UE initiates the transmission of the fourth information; or the UE would transmit the fourth information due to various events or reasons). For example, the negative second information may indicate that the UE does not transmit the fourth information.

[0292] In some implementations, the fourth information may also include at least one of uplink data, HARQ-ACK information, CSI report, or other UCI information.

[0293] In some implementations, the first information may also be used to indicate that the CSI report configuration may be UE-initiated (UEI) or event-driven beam report (BR) or CSI reporting. For example, the first information may be configured in the CSI report configuration. Herein, the CSI report configuration may be a CSI report configuration for UE-initiated CSI reporting. Herein, the UE-initiated CSI reporting may be considered as event-driven CSI reporting. Herein, the UE-initiated CSI reporting may be UE-initiated beam reporting, or UE-initiated Layer 1 (L1)- reference signal receiver power (RSRP) / L1-signal-to-interference plus noise ratio (SINR) reporting.

[0294] In some implementations, the fourth information may be a UE-initiated (UEI) or an event-driven beam report (BR). The fourth information may be a CSI report for a UE-initiated or event-driven beam report. The fourth information may be a L1-RSRP and / or L1-SINR report.

[0295] In some implementations, the second information may be a UCI type different from SR, LRR, HARQ-ACK, and CSI. For example, the second information is an uplink transmission indication or a UEI-BR transmission indication.

[0296] In some implementations, the beam related information may be at least one of the following:

[0297] CSI report

[0298] beam management information

[0299] beam measurement information

[0300] BFR (beam failure recovery)

[0301] As some examples, the beam management information may refer to information related to beam management.

[0302] As some examples, the beam measurement information may refer to information related to beam measurement.

[0303] As some examples, the BFR may refer to information related to a BFR procedure.

[0304] It should be noted that the "CSI report", "beam management information", "beam measurement information", and "BFR" described above are only examples of the beam-related information. The example embodiments of the disclosure are equally applicable to other beam-related information.

[0305] It should be noted that although the "CSI report", "beam management information", "beam measurement information", "BFR", and "UEI-BR" are described in a separate manner, it will be understood that one of them may be included in the other as the fourth information. For example, at least one of "beam management information", "beam measurement information", "BFR", and "UEI-BR" may be included in the CSI report as the fourth information. Therefore, in the example embodiments of the disclosure, the CSI report may also refer to a CSI report including at least one of beam management information, beam measurement information, UEI-BR or BFR.

[0306] In the following example embodiments of the disclosure, UEI-BR may be described as an example of the beam related information for convenience of explanation. However, it will be understood that "UEI-BR" may be replaced with other beam related information or CSI reports.

[0307] In some implementations, the beam-related information may be UE-initiated beam-related information. For example, the beam related information may be a CSI report initiated by the UE. For example, the beam related information may be UEI-BR.

[0308] In some implementations, the fourth information may include reporting (or transmission) of one or more beam related information. For example, the fourth information may include reporting (or transmission) of one or more beam related information in a time unit and / or in a PUCCH or PUSCH.

[0309] Referring back to FIG. 7, in operation S720, the UE may determine to transmit the second information and / or the fourth information based on that a specific condition is satisfied or a specific event occurs. For example, for a CSI report configuration, the UE may determine to transmit the second information and / or the fourth information associated with the CSI report configuration based on that the specific condition is satisfied or the specific event occurs.

[0310] In operation S730, the UE transmits the second information. For example, the UE may transmit the second information in an uplink time unit. For example, the UE transmits a first PUCCH or a first PUSCH with the second information. For example, when the specific condition is satisfied, the UE transmits the second information or the UE transmits the first PUCCH or the first PUSCH with the second information. The first PUCCH or first PUSCH resource may be configured in the CSI report configuration parameter. In the embodiments of the disclosure, taking the first PUCCH as an example for explanation, and the first PUCCH may be replaced with other uplink physical channels, such as the first PUSCH.

[0311] In operation S710, the UE may also detect a DCI format (e.g., a first DCI format) carried by a PDCCH reception, where the DCI format (e.g., the first DCI format) may indicate a physical uplink channel for carrying a CSI report for the CSI report configuration. The physical uplink channel may be a second PUCCH or a second PUSCH.

[0312] According to some example embodiments of the disclosure, if a timeline condition between the first PUCCH and the PDCCH is satisfied, the UE may multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH). If the timeline condition between the first PUCCH and the PDCCH is not satisfied, the UE may not multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH). For example, the examples of the timeline condition between the first PUCCH and the PDCCH may refer to the description of FIG. 9 and / or FIG. 10. Some examples of the timeline condition between the first PUCCH and the PDCCH are described below.

[0313] According to some example embodiments of the disclosure, if a timeline condition between the PDCCH and the physical uplink channel (e.g., the second PUSCH) is satisfied, the UE may multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH). If the timeline condition between the PDCCH and the physical uplink channel (e.g., the second PUSCH) is not satisfied, the UE may not multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH). For example, the examples of the timeline condition between the PDCCH and the physical uplink channel (e.g., the second PUSCH) may refer to the description of FIG. 9 and / or FIG. 10. Some examples of the timeline condition between the PDCCH and the physical uplink channel (e.g., the second PUSCH) are described below.

[0314] According to some example embodiments of the disclosure, if a timeline condition between the first PUCCH and the physical uplink channel (e.g., the second PUSCH) is satisfied, the UE may multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH). If the timeline condition between the first PUCCH and the physical uplink channel (e.g., the second PUSCH) is not satisfied, the UE may not multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH). For example, the examples of the timeline condition between the first PUCCH and the physical uplink channel (e.g., the second PUSCH) may refer to the description of FIG. 9 and / or FIG. 10. Some examples of the timeline condition between the first PUCCH and the physical uplink channel (e.g., the second PUSCH) are described below.

[0315] According to some example embodiments of the disclosure, if the timeline condition between the first PUCCH and the PDCCH is satisfied, the timeline condition between the PDCCH and the physical uplink channel (e.g., the second PUSCH) is satisfied, and the timeline condition between the first PUCCH and the physical uplink channel (e.g., the second PUSCH) is satisfied, the UE may multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH). If any of the above timeline conditions is not satisfied, the UE may not multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH).

[0316] In some implementations, if the first PUCCH is earlier than or no later than a first time before the PDCCH reception carrying the DCI format (e.g., the first DCI format) (i.e., if the first PUCCH is before or not after the first time before the PDCCH reception carrying the DCI format) (which is an example of the timeline conditions between the PDCCH and the first PUCCH), the UE may multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH). For example, as shown in FIG. 11A, the time interval between the PUCCH (e.g., the first PUCCH) and the PDCCH is greater than or not smaller than the first time. It should be noted that the timeline conditions described below may be used interchangeably:

[0317] - The first PUCCH is earlier than or no later than the first time before the PDCCH reception (e.g., referring to FIG. 11A, the first PUCCH is earlier than or no later than time t1that is the first time before the PDCCH reception t2)

[0318] - The first PUCCH is transmitted in a time that is the first time before the PDCCH reception (or the first PUCCH is transmitted before the first time before the PDCCH reception) (e.g., referring to FIG. 11A, the first PUCCH is transmitted in or before time t1that is the first time before the PDCCH reception t2)

[0319] - The PDCCH reception is later than or no earlier than the first time after the first PUCCH

[0320] - The UE detects the PDCCH in a time that is the first time after the first PUCCH transmission (or the UE detects the PDCCH after the first time after the first PUCCH transmission)

[0321] - The time interval between the first PUCCH and the PDCCH is greater than or equal to or not less than a first time

[0322] In some implementations, if at least one of the above-described conditions is not satisfied, the UE does not multiplex the CSI report in the second PUSCH.

[0323] It should be noted that the following descriptions may be used interchangeably:

[0324] - The UE does not multiplex the CSI report in the physical uplink channel

[0325] - The UE ignores the DCI format or uplink grant (UL grant)

[0326] - The UE ignores the DCI format or UL grant if no HARQ-ACK or transport block is multiplexed in the second PUSCH

[0327] - The UE does not transmit the second PUSCH

[0328] - The UE does not transmit the second PUSCH if no HARQ-ACK or transport block is multiplexed in the second PUSCH

[0329] In an example embodiment of the disclosure, the second PUSCH is used as an example to describe processes or behaviors related to the physical uplink channel. In example embodiments of the disclosure, the "second PUSCH" may be replaced with other physical uplink channels, such as the "second PUCCH".

[0330] In some implementations, if the first PUCCH is later than or no earlier than a second time before the PDCCH reception (i.e., if the first PUCCH is after or not before the second time before the PDCCH reception) (which is an example of the timeline condition between the PDCCH and the first PUCCH), the UE may multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH). For example, as shown in FIG. 11A, the time interval between the PUCCH (e.g., the first PUCCH) and the PDCCH is smaller or not greater than the second time.

[0331] It should be noted that the timeline conditions described below may be used interchangeably:

[0332] - The first PUCCH is later than or no earlier than the first time before the PDCCH reception (e.g., referring to FIG.11A, the first PUCCH is later than or no earlier than time t0that is the second time before the PDCCH reception t2)

[0333] - The first PUCCH is transmitted in a time that is the second time before the PDCCH reception (or the first PUCCH is transmitted after the second time before the PDCCH reception) (e.g., referring to FIG. 11A, the first PUCCH is transmitted in or after time t0that is the second time before the PDCCH reception t2)

[0334] - The PDCCH reception is earlier than or no later than the second time after the first PUCCH

[0335] - The UE detects the PDCCH in a time that is the second time after the first PUCCH transmission (or the UE detects the PDCCH before the second time after the first PUCCH transmission)

[0336] - The time interval between the first PUCCH and the PDCCH is less than or not greater than the second time

[0337] It should be noted that if the above-described condition is not satisfied, the UE does not multiplex the CSI report in the second PUSCH.

[0338] In some implementations, if the first PUCCH is earlier than or no later than the first time before the PDCCH reception and the first PUCCH is later than or no earlier than the second time before the PDCCH reception (which is an example of the timeline condition between the PDCCH and the first PUCCH), the UE may multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH).

[0339] In the embodiments of the disclosure, the second time may be replaced with the sum of the first time and the third time (i.e., the first time plus the third time), as shown in FIG. 11A.

[0340] In some implementations, the UE does not expect that the PDCCH reception is earlier than or no later than the first time after the PUCCH or the UE does not expect that the PUCCH is not transmitted before the first time before the first time before the PDCCH reception.

[0341] In some implementations, the UE does not expect that the PDCCH reception is later than or no earlier than the second time after the PUCCH or the UE does not expect that the PUCCH is not transmitted after the second time before the PDCCH reception.

[0342] In some implementations, in case that a UL-SCH indicator field of the DCI format indicates 0, if the first PUCCH is earlier than or no later than the first time before the PDCCH reception and / or the first PUCCH is later than or no earlier than the second time before the PDCCH reception, UE does not transmit the second PUSCH.

[0343] In some implementations, if the UE does not detect, within a fifth time before the first PUCCH, a DCI format (or a PDCCH reception, or a PDCCH reception carrying a DCI format) indicating BWP switching / change, the UE may transmit the first PUCCH. If the UE detects, within the fifth time before the first PUCCH, a DCI format (or a PDCCH reception, or a PDCCH reception carrying a DCI format) indicating BWP switching / change, the UE may not transmit the first PUCCH.

[0344] In some implementations, if the PDCCH reception is later than or no earlier than a thirteenth time after the first PUCCH (which is an example of the timeline condition between the PDCCH and the first PUCCH), the UE may multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH). For example, as illustrated in FIG. 11B, the time interval between the PUCCH (e.g., the first PUCCH) and the PDCCH is greater than or not less than the thirteenth time.

[0345] It should be noted that the conditions described below may be used interchangeably:

[0346] - The PDCCH reception is later than or no earlier than the thirteenth time after the first PUCCH (e.g., referring to FIG. 11B, the PDCCH reception is later than or no earlier than time t4that is the thirteenth time after the first PUCCH reception t3)

[0347] - The UE detects the PDCCH in a time that is the thirteenth time after the PUCCH reception (or the UE detects the PDCCH after the thirteenth time after the PUCCH reception) (e.g., referring to FIG. 11B, the UE detects the PDCCH in or after time t4that is the thirteenth time after the PUCCH reception t3)

[0348] - The first PUCCH is earlier than or no later than the thirteenth time before the PDCCH reception

[0349] - The first PUCCH is transmitted in a time that is the thirteenth time before the PDCCH reception (or the first PUCCH is transmitted before the thirteenth time before the PDCCH reception)

[0350] - The time interval between the first PUCCH and the PDCCH is greater than or equal to or not less than the first time.

[0351] In some implementations, if at least one of the above-described conditions is not satisfied, the UE does not multiplex the CSI report in the second PUSCH.

[0352] In some implementations, if the PDCCH reception is earlier than or no later than a twelfth time after the first PUCCH (which is an example of the timeline condition between the PDCCH and the first PUCCH), the UE may multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH). For example, as shown in FIG. 11B, the time interval between the PUCCH (e.g., the first PUCCH) and the PDCCH is less than or not greater than the twelfth time.

[0353] It should be noted that the conditions described below may be used interchangeably:

[0354] - The PDCCH reception is earlier than or no later than the twelfth time after the first PUCCH (e.g., referring to FIG. 11B, the PDCCH reception is earlier than or no later than time t2that is the twelfth time after the first PUCCH (e.g., time t3))

[0355] - The UE detects the PDCCH in a time that is the twelfth time after the first PUCCH transmission (or the UE detects the PDCCH before the twelfth time after the first PUCCH transmission) (e.g., referring to FIG. 11 A, the UE detects the PDCCH in or before time t5that is the twelfth time after the first PUCCH transmission (e.g., time t3).)

[0356] - The first PUCCH is later than or no earlier than the twelfth time before the PDCCH reception

[0357] - The first PUCCH is transmitted in a time that is the twelfth time before the PDCCH reception (or the first PUCCH is transmitted after the twelfth time before the PDCCH reception)

[0358] - The time interval between the first PUCCH and the PDCCH is less than or not greater than the twelfth time.

[0359] In some implementations, if at least one of the above-described conditions is not satisfied, the UE does not multiplex the CSI report in the second PUSCH.

[0360] In some implementations, if the PDCCH reception is later than or no earlier than the thirteenth time after the first PUCCH and the PDCCH reception is earlier than or no later than the twelfth time after the first PUCCH time (which is an example of the timeline condition between the PDCCH and the first PUCCH), the UE may multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH).

[0361] In the embodiments of the disclosure, the twelfth time may be replaced with the sum of the eleventh time and the thirteenth time (i.e., the eleventh time plus the thirteenth time), as shown in FIG. 11B.

[0362] In some implementations, the UE does not expect that the PDCCH reception is earlier than or no later than the thirteenth time after the PUCCH or the UE does not expect that the PUCCH is not transmitted before the thirteenth time before the PDCCH reception.

[0363] In some implementations, the UE does not expect that the PDCCH reception is later than or no earlier than the twelfth time after the PUCCH, or the UE does not expect that the PUCCH is not transmitted after the twelfth time before the PDCCH reception.

[0364] In some implementations, in case that the UL-SCH indicator field of the DCI format indicates 0, if the PDCCH reception is later than or no earlier than the thirteenth time after the first PUCCH and / or the PDCCH reception is earlier than or no later than the twelfth time after the first PUCCH, the UE does not transmit the second PUSCH.

[0365] In some implementations, if the UE does not detect, within the fifth time before the first PUCCH, a DCI format (or a PDCCH reception, or a PDCCH reception carrying a DCI format) indicating BWP switching / change, the UE may transmit the first PUCCH. If the UE detects, within the fifth time before the first PUCCH, a DCI format (or a PDCCH reception, or a PDCCH reception carrying a DCI format) indicating BWP switching / change, the UE may not transmit the first PUCCH.

[0366] In the embodiments of the disclosure, the first time, the second time, the third time, the eleventh time, the twelfth time, and the thirteenth time may be configured separately through higher layer signaling.

[0367] In the embodiments of the disclosure, the first time, the second time, the third time, the eleventh time, the twelfth time, and the thirteenth time may be reported separately through different UE capabilities.

[0368] The method defines the behavior of the UE in case of the false detection of the PUCCH by the network, which can improve the reliability of uplink transmission. For example, when the UE does not transmit a PUCCH but the network erroneously considers that the UE has transmitted a PUCCH, the network may schedule a DCI format indicating UEI-BR transmission. In such case, the UE may not have sufficient processing time to multiplex CSI reports in the scheduled PUSCH. The method clarifies the behavior of the UE in this case, thereby improving the reliability of uplink transmission.

[0369] In some implementations, the physical uplink channel is no earlier than a fourth time after the PDCCH reception (which is an example of the timeline condition between the PDCCH and the physical uplink channel). For example, the fourth time may be a preparation time for the UE to prepare uplink data and CSI reports initiated by the UE. For example, the physical uplink channel may be a physical uplink channel indicated by the DCI format (e.g., the first DCI format), for carrying the CSI report for the CSI report configuration, as described above.

[0370] It should be noted that the conditions described below may be used interchangeably:

[0371] - The physical uplink channel is no earlier than the fourth time after the PDCCH reception

[0372] - The UE detects the PDCCH in a time that is the fourth time before the physical uplink channel or the UE detects the PDCCH before the fourth time before the physical uplink channel

[0373] - The PDCCH reception is earlier than the fourth time before that physical uplink channel

[0374] - The time interval between the physical uplink channel and the PDCCH is greater than or equal to or not less than the fourth time.

[0375] - First timeline condition

[0376] In some implementations, if the first timeline condition is satisfied, the UE may transmit the PUSCH and / or fourth information. Additionally or alternatively, if the first timeline condition is not satisfied, the UE may ignore the DCI format (e.g., the first DCI format). The PUSCH may be determined according to the indication of the DCI carried by the PDCCH.

[0377] For example, the first timeline condition may be that the first symbol (e.g., first uplink symbol) of the PUSCH with / carrying the fourth information is no earlier than (not before) symbol L2. Symbol L2 may be defined as a next symbol (e.g., next uplink symbol) starting after time after the last symbol (e.g., the end of the last symbol) of the PDCCH reception, where may be determined by Equation 1 below.

[0378] [Equation 1]

[0379]

[0380] - The value of is determined from Tables 1 and 2.

[0381] - is an additional time for operation with shared spectrum channel access.

[0382] - is a parameter related to DM-RS. For example, if the first symbol of PUSCH allocation consists of DMRS only, , otherwise, .

[0383] - is a BWP change / switching time.

[0384] - is an additional time when a PUSCH with a larger priority index (which may correspond to a higher priority) overlaps with a PUCCH with a smaller priority index (which may correspond to a lower priority). For example, may be a non-negative integer.

[0385] - is an uplink switching gap.

[0386] - is a constant, and =64

[0387] - may be determined by a subcarrier spacing parameter. For example, may be determined from Table 3, where is the subcarrier spacing.

[0388] - Time unit , where , and

[0389] - is an additional processing time for PUSCH simultaneous transmission. For example, may be a non-negative integer. For example, the PUSCH simultaneous transmission may be the simultaneous transmission of two PUSCHs on a serving cell.

[0390] - is an additional processing time for multiplexing the fourth information.

[0391] [Table 1] PUSCH preparation time (for PUSCH timing capability 1)

[0392]

[0393] [Table 2] PUSCH preparation time (for PUSCH timing capability 2)

[0394]

[0395] [Table 3]

[0396]

[0397] It should be noted that if the PUSCH is not a third PUSCH, or the UE is not configured with a parameter related to scheduling of a third PUSCH, =0.

[0398] It should be noted that may be 0. may also be reported by a UE capability.

[0399] In some implementations, if the physical uplink channel (e.g., the second PUSCH) is no earlier than a sixth time after the first PUCCH ( which is an example of the timeline condition between the first PUCCH and the physical uplink channel), the UE may multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH). For example, the physical uplink channel may be a physical uplink channel indicated by the DCI format (e.g., the first DCI format), for carrying the CSI report for the CSI report configuration, as described above.

[0400] It should be noted that the conditions described below may be used interchangeably:

[0401] - The physical uplink channel is no earlier than the sixth time after the first PUCCH

[0402] - The UE transmit the first PUCCH in a time that is the sixth time before the physical uplink channel, or the UE transmit the first PUCCH before the sixth time before the physical uplink channel

[0403] - The first PUCCH is earlier than the sixth time before the physical uplink channel

[0404] - The time interval between the physical uplink channel and the first PUCCH is greater than or equal to or not less than the sixth time.

[0405] In some implementations, if at least one of the above described conditions is not satisfied, the UE does not multiplex the CSI report in the physical uplink channel (e.g., the second PUSCH).

[0406] In some implementations, the UE does not expect that the physical uplink channel is earlier than or no later than the sixth time after the PUCCH, or the UE does not expect that the PUCCH is not transmitted before the sixth time before the physical uplink channel.

[0407] According to some of the example embodiments of the disclosure, the first PUCCH and another first PUCCH (e.g., another first PUCCH for the CSI report configuration) may need to satisfy a timeline condition / relationship. The another first PUCCH is an uplink physical channel for carrying the second information (e.g., second information for the CSI report configuration). If the timeline condition between the first PUCCH and the another first PUCCH is satisfied, the UE may transmit the first PUCCH. If the timeline condition between the first PUCCH and the another first PUCCH is not satisfied, the UE may not transmit the first PUCCH. A specific example of the timeline condition between the first PUCCH (PUCCH_1) and the another first PUCCH (PUCCH_2) will be described in conjunction with FIG. 12A. It may be understood that the first PUCCH (PUCCH_1) and the another first PUCCH (PUCCH_2) are examples of uplink physical channels carrying the second information. The embodiments of the disclosure are not limited thereto, and other uplink physical channels may be used.

[0408] In some implementations, if the another first PUCCH (PUCCH_2) is earlier than or no later than a twenty-first time T_21 before the first PUCCH (PUCCH_1) (i.e., if the another first PUCCH (PUCCH_2) is before or not after the twenty-first time T_21 before the first PUCCH (PUCCH_1) )(which is an example of the timeline condition between the first PUCCH (PUCCH_1) and the another first PUCCH (PUCCH_2)), the UE may transmit the first PUCCH (PUCCH_1). For example, as shown in FIG. 12A, the time interval between the first PUCCH (PUCCH_1) and the another first PUCCH (PUCCH_2) is greater than or not less than the twenty-first time T_21. It should be noted that the conditions described below may be used interchangeably:

[0409] - The another first PUCCH is earlier than or no later than the time twenty-first time before the first PUCCH (e.g., referring to FIG. 12A, the another first PUCCH (PUCCH_2) is earlier than or no later than time t01that is the twenty-first time T_21 before the first PUCCH (PUCCH_1) t02)

[0410] - The first PUCCH is transmitted in a time that is the twenty-first time T_21 before the first PUCCH (PUCCH_1) (or the first PUCCH is transmitted before the twenty-first time T_21 before the PDCCH reception) (e.g., referring to FIG.12A, the first PUCCH is transmitted in time t01that is the twenty-first time T_21 before the first PUCCH (PUCCH_1) t02or before the time t01)

[0411] - The first PUCCH (PUCCH_1) is later than or no earlier than the time twenty-first time T_21 after the another first PUCCH (PUCCH_2)

[0412] - The UE transmits the first PUCCH (PUCCH_1) in a time that is the twenty-first time T_21 after the another first PUCCH (PUCCH_2) (or the UE transmits the first PUCCH (PUCCH_1) after the twenty-first time T_21 after the another first PUCCH (PUCCH_2))

[0413] - The time interval between the first PUCCH (PUCCH_1) and the another first PUCCH (PUCCH_2) is greater than or equal to or not less than the twenty-first time T_21

[0414] In some implementations, if at least one of the above-described conditions is not satisfied, the UE does not transmit the first PUCCH (PUCCH_1).

[0415] According to some example embodiments of the disclosure, the first PUCCH and another physical uplink channel (the physical uplink channel in which the CSI report is multiplexed, e.g., another second PUSCH) may need to satisfy a timeline condition / relationship. If the timeline condition between the first PUCCH and the another physical uplink channel is satisfied, the UE may transmit the first PUCCH. If the timeline condition between the first PUCCH and the another physical uplink channel (e.g., the another second PUSCH) is not satisfied, the UE may not transmit the first PUCCH. A specific example of the timeline condition between the first PUCCH (PUCCH_1) and the another physical uplink channel (e.g., the another second PUSCH) will be described in conjunction with FIG.12B. It may be understood that the first PUCCH (PUCCH_1) is an example of an uplink physical channel for carrying the second information. The embodiments of the disclosure are not limited thereto, and other uplink physical channels may be used.

[0416] In some implementations, if the another physical uplink channel (e.g., the another second PUSCH) is earlier than or no later than a thirty-first time T_31 before the first PUCCH (PUCCH_1) (i.e., if the another physical uplink channel (e.g., the another second PUSCH) is before or not after the thirty-first time T_31 before the first PUCCH (PUCCH_1) ) (which is an example of the timeline condition between the first PUCCH (PUCCH_1) and the another physical uplink channel (e.g., the another second PUSCH)), the UE may transmit the first PUCCH (PUCCH_1). For example, as shown in FIG.12B, the time interval between the first PUCCH (PUCCH_1) and the another physical uplink channel (e.g., the another second PUSCH) is greater than or not less than the thirty-first time T_31. It should be noted that the conditions described below may be used interchangeably:

[0417] - The another physical uplink channel (e.g., the another second PUSCH) is earlier than or no later than the thirty-first time before the first PUCCH (e.g., referring to FIG.12A, the another physical uplink channel (e.g., the another second PUSCH) is earlier than or no later than time t01that is the thirty-first time T_31 before the first PUCCH (PUCCH_1) t02)

[0418] - The first PUCCH is transmitted in a time that is the thirty-first time T_31 before the first PUCCH (PUCCH_1) (or the first PUCCH is transmitted before the thirty-first time T_31 before the PDCCH reception) (e.g., referring to FIG.12A, the first PUCCH is transmitted in time t01that is the thirty-first time T_31 before the first PUCCH (PUCCH_1) t02or before time t01)

[0419] - The first PUCCH (PUCCH_1) is later than or no earlier than the thirty-first time T_31 after the another physical uplink channel (e.g., the another second PUSCH)

[0420] - The UE transmits the first PUCCH (PUCCH_1) in a time that is the thirty-first time T_31 after the another physical uplink channel (e.g., the another second PUSCH) (or the UE transmits the first PUCCH (PUCCH_1) after the thirty-first time T_31 after the another physical uplink channel (e.g., the another second PUSCH))

[0421] - The time interval between the first PUCCH (PUCCH_1) and the another physical uplink channel (e.g., the another second PUSCH) is greater than or equal to or not less than the thirty- first time T_31

[0422] In some implementations, if at least one of the above-described conditions is not satisfied, the UE does not transmit the first PUCCH (PUCCH_1).

[0423] According to some example embodiments of the disclosure, both the timeline condition / relationship between the first PUCCH (PUCCH_1) and the another first PUCCH (PUCCH_2) and the timeline condition / relationship between the first PUCCH (PUCCH_1) and the another physical uplink channel (e.g., the another second PUSCH) may need to be satisfied. For example, if the timeline condition / relationship between the first PUCCH (PUCCH_1) and another first PUCCH (PUCCH_2) and the timeline condition / relationship between the first PUCCH (PUCCH_1) and the another physical uplink channel (e.g., the another second PUSCH), the UE may transmit the first PUCCH (PUCCH_1). If any of the timeline condition / relationship between the first PUCCH (PUCCH_1) and another first PUCCH (PUCCH_2) and the timeline condition / relationship between the first PUCCH (PUCCH_1) and the another physical uplink channel (e.g., the another second PUSCH) is not satisfied, the UE may not transmit the first PUCCH (PUCCH_1). The timeline conditions / relationships described above with respect to the first PUCCH may be combined with each other, that is, two or more of the timeline conditions / relationships may need to be satisfied simultaneously.

[0424] In the disclosure, a TCI state may include parameters for configuring a quasi co-location relationship. The parameters configure the relationship between a reference signal (e.g., one or two reference signals, or, one or two downlink reference signals) and at least one of the following: the demodulation reference signal (DM-RS) port of a PDSCH, the DM-RS ports of a PDCCH, or the CSI-RS port(s) of a CSI-RS resource. Optionally, the quasi co-location relationship is configured by a higher layer parameter (e.g., qcl-Type1) for the first downlink reference signal. Optionally, the quasi co-location relation is configured by a higher layer parameter (e.g., qcl-Type2) for the second downlink reference signal. For the case of two downlink reference signals, the QCL type are not the same, regardless of whether the references are to the same downlink reference signal or different downlink reference signals.

[0425] In the disclosure, the TCI state may be used to provide a reference signal for the quasi-co-location for DM-RS of PDSCH in a BWP / CC, DM-RS of PDCCH in a BWP / CC, and for CSI-RS (e.g., CSI-RS on a serving cell), and to provide a reference, if applicable, for determining uplink transmit spatial filter. Optionally, the uplink transmit spatial filter may be for dynamic-grant and configured-grant based PUSCH and PUCCH resources, and SRS.

[0426] In the disclosure, the indicated TCI state is used for the reception of downlink channels / downlink signals, and / or for the transmission of uplink channels / uplink signals. The indicated TCI state may be obtained by the following method.

[0427] The UE may receive / apply an indication of TCI state(s). For example, the indication of the TCI state(s) may be from the base station. Optionally, the UE may obtain the indicated TCI state(s) through the indication of the TCI state(s). The TCI state(s) may be indicated through at least one of the following signaling: RRC, MAC-CE, or DCI. Optionally, the indicated TCI state(s) may be obtained through at least one of the following: RRC, MAC-CE, or DCI. Optionally, the UE may obtain the configured TCI state(s) through the reception of TCI state related RRC signaling. Optionally, the UE may obtain the activated TCI state(s) through the reception of MAC-CE signaling. Optionally, the activated TCI state(s) is / are from the configured TCI state(s), or the activated TCI state(s) is / are at least one of the configured TCI state(s), or the activated TCI state(s) is / are a subset of the configured TCI state(s). Optionally, the UE may obtain the indicated TCI state(s) through the reception of DCI. Optionally, the indicated TCI state(s) is / are from the activated TCI state(s), or the indicated TCI state(s) is / are at least one of the activated TCI state(s).

[0428] It should be noted that the above methods according to the embodiments of the disclosure may be applied to a case where the first DCI format indicates a CSI report configuration; for example, a CSI aperiodic trigger state (CSI-AperiodicTriggerState) indicated by a CSI request field in the first DCI format only corresponds to one CSI report configuration or information of one CSI-associated report configuration (CSI-AssociatedReportConfigInfo). For the one CSI report configuration or a CSI report configuration associated with the information of one CSI-associated report configuration, the above methods according to the embodiments of the disclosure may be applicable. For example, the timeline condition needs to be satisfied. Optionally, it may be specified by protocols that one CSI aperiodic trigger state may include only one (or at most one) CSI report configuration configured with UEI-BR, or include the information of CSI-associated report configuration for a CSI report configuration configured with UEI-BR, where the information of one CSI-associated report configuration includes one CSI report configuration index (CSI-ReportConfigId), which can reduce UE implementation complexity.

[0429] In some cases, a CSI aperiodic trigger state may include information of more than one CSI-associated report configurations, where information of each CSI-associated report configuration includes one CSI report configuration index (CSI-ReportConfigId), the CSI report configurations corresponding to the CSI report configuration index are CSI report configurations configured with UEI-BR, and the CSI report configurations corresponding to the CSI report configuration index are configured with a same PUCCH resource, for example, the PUCCH resource used to carry the second information. Or, the UE does not expect that the CSI report configurations corresponding to the CSI report configuration index are configured with different PUCCH resources. A CSI aperiodic trigger state (CSI-AperiodicTriggerState) indicated by the CSI request field (CSI request) in the first DCI format may correspond to more than one CSI report configurations or information of more than one CSI-associated report configurations (CSI-AssociatedReportConfigInfo), for any CSI report configuration of the more than one CSI report configurations or the CSI report configurations associated with information of the more than one CSI-associated report configurations, the above method according to the embodiments of the disclosure may be applicable. For example, the timeline condition needs to be satisfied. The UE may choose to report the fourth information for one CSI report configuration of the more than one CSI report configurations or the CSI report configurations associated with information of the more than one CSI-associated report configuration. Optionally, the UE may report the index information for the one CSI report configuration or for information of the CSI-associated report configurations (CSI-AssociatedReportConfigInfo) corresponding to the one CSI report configuration. The index information may be a sequence number (or number) of the CSI-associated report configuration information (CSI-AssociatedReportConfigInfo) corresponding to the CSI report configuration, in the CSI aperiodic trigger state (CSI-AperiodicTriggerState). The index information may be reported through N bits, where N is a positive integer, and , where M is a number of elements (e.g., CSI-associated report configuration information (CSI-AssociatedReportConfigInfo)) in the associated report configuration information list (associatedReportConfigInfoList) included in the CSI aperiodic trigger state (CSI-AperiodicTriggerState). As an example, assuming that the associated report configuration information list includes information of three CSI-associated report configurations, i.e., M = 3, then N = 2, and the index information "00" represents information of the first CSI-associated report configuration in the associated report configuration information list, "01" represents information of the second CSI-associated report configuration in the associated report configuration information list, and "10" represents information of the third CSI-associated report configuration in the associated report configuration information list. The number of bits of the fourth information may be determined based on the maximum value of the number of bits corresponding to the more than one CSI report configurations. For example, the number Q of bits of the fourth information is the maximum value of the number of bits corresponding to the more than one CSI report configurations. For another example, the number Q of bits of the fourth information is the maximum value of the number of bits corresponding to the more than one CSI report configurations plus N. The N bits may be the first N bits among the bits of the fourth information. If the number P of bits of certain fourth information is less than Q, the UE generates NACK for the last Q-P bits among the Q bits, which can reduce implementation complexity. Or, the UE repeats the certain fourth information up to Q bits. This can provide the network with more information bits and improve the reliability of UCI transmission. This method can ensure the consistent understanding about the CSI report configuration report between the network and the UE, and can reduce the number of UCI information bits compared to directly indicating the CSI configuration report index. The method can improve the reliability of uplink control information transmission.

[0430] It should be noted that the PUCCH resources configured in the CSI report configurations associated with different CSI aperiodic trigger states may be different, or the UE does not expect that the CSI report configurations associated with different CSI aperiodic trigger states are configured with a same PUCCH.

[0431] It should be noted that the above method may be applicable to mode A or a first mode in which PUSCH resources are indicated by a DCI format.

[0432] In some cases, for mode B or a second mode, PUSCH resources are configured by higher layer signaling, such as CG PUSCH resources. It may be specified by protocols that for multiple CSI report configurations configured with a same PUCCH resource, the PUSCH resource (e.g., CG PUSCH) configured by each of the multiple CSI report configurations is the same. That is, the index of the PUSCH resource, BWP ID, and serving cell index are all the same. This method can reduce uplink resource overhead and improve network spectrum efficiency. The UE may be configured with a CSI report configuration list (e.g., a CSI report configuration list for Mode B) by higher layer signaling, for example, in a manner that reuses the report configuration information list (associatedReportConfigInfoList). The method of reporting index information through N bits in other embodiments of the disclosure may be reused to report the indexes of the multiple CSI report configurations.

[0433] In some cases, for mode B or the second mode, the PUSCH resources are configured by higher layer signaling. It may be specified by protocols that the UE does not expect that for multiple CSI report configurations configured with a same PUCCH resource, the PUSCH resource (e.g., CG PUSCH) configured for each of the multiple CSI report configurations is the same, or for multiple CSI report configurations configured with a same PUCCH resource, the PUSCH resources configured for the multiple CSI report configurations are different, which can reduce implementation complexity.

[0434] It should be noted that for multiple CSI report configurations configured with a same PUCCH resource, it may be specified by protocols or configured by higher signaling that the number of bits of the fourth information corresponding to each of the multiple CSI report configurations is the same, or, the UE does not expect that the number of bits of the fourth information corresponding to each of the multiple CSI report configurations is different. This method can reduce implementation complexity.

[0435] It should be noted that the embodiments of the disclosure may be used in LTM (L1 / L2 triggered Mobility).

[0436] When the UE moves across cells, cell switching is required to ensure communication quality. Cell switching may be performed through the indication of higher layer signaling (e.g., layer 3 signaling, RRC signaling). However, due to the large transmission delay of high layer signaling, the cell switch procedure is long. During the cell switch procedure, the transmission parameters of the UE are reconfigured. Before the reconfiguration takes effect, the transceiver capability of the UE is limited, resulting in a decrease in the performance of the communication system. In order to reduce the duration of the cell switch procedure, one approach is to use layer 1 / layer 2 (L1 / L2) signaling with shorter application time for cell switching. For example, cell switching is performed through L1 / L2 triggered mobility (LTM). In order to perform LTM, the configuration information of candidate cells needs to be pre-configured so that cell switching is triggered / completed through L1 / L2 signaling when cell switching is required. The configuration method of configuration information associated with candidate cells is as follows.

[0437] In some cases, the UE may receive information for providing an LTM configuration (e.g., LTM-Config). Optionally, the information for providing the LTM configuration may configure one or more LTM candidate configurations (e.g., LTM-Candidate). Optionally, the candidate configuration may be a configuration associated with a candidate cell. For example, one or more LTM candidate configurations may correspond to configurations of one or more candidate cells. Optionally, the candidate cell is associated with the configuration of the RRC reconfiguration message. Optionally, the candidate configuration may be a complete candidate configuration or a delta configuration relatively to a reference configuration. Optionally, a LTM candidate configuration / each LTM candidate configuration may include / be configured with at least one of: 1) LTM candidate configuration ID; 2) physical cell ID (PCI) for LTM; 3) SSB configuration information for LTM; 4) configuration information of CSI-RS resources for LTM; 5) information for indicating an RRC reconfiguration message; 6) TCI related information.

[0438] Optionally, the LTM candidate configuration ID may be used to identify an LTM candidate configuration. For example, the ID is configured through the parameter LTM-CandidateId or LTM-CandidateId-r18. Optionally, the LTM candidate configuration ID may be used to identify a candidate cell.

[0439] Optionally, the physical cell ID for LTM may be a PCI used to identify a special cell (SpCell) of an LTM candidate configuration. Optionally, the LTM candidate configuration refers to an LTM candidate configuration configured in the parameter LTM-CandidateConfig. For example, an LTM candidate configuration may configure configuration information of one or more cells, where a special cell among the one or more cells is identified by the PCI. Here, the special cell among the one or more cells may be called a candidate cell.

[0440] Optionally, there is SSB configuration information for LTM (e.g., ltm-SSB-Config). Optionally, the SSB configuration information is used for a special cell for an LTM candidate configuration. The SSB configuration information for LTM may include / indicate at least one of frequency domain information, subcarrier spacing, periodicity, or SSB position information. The frequency domain information may indicate the frequency of a SSB. The frequency domain information may be indicated by the parameter ssb-Frequency. Optionally, the frequency domain information may indicate a frequency domain position (e.g., the frequency domain position of CRB#0). Optionally, the frequency domain information may indicate a frequency domain position referenced by a reference signal. Optionally, the frequency domain information indicates the frequency domain position of point A. Optionally, point A refers to a frequency where the center of the lowest subcarrier of the SSB is located. Optionally, the frequency domain information indicates the frequency of the lowest subcarrier (e.g. subcarrier #0) in the lowest resource block (RB) of the SSB. The subcarrier spacing may indicate a subcarrier spacing of the SSB. The subcarrier spacing may be indicated by the parameter subcarrierSpacing. The periodicity refers to a period of the SSB, which may be indicated by the parameter ssb-Periodicity. The SSB location information is used to indicate the time domain positions of the transmitted SSBs. The SSB location information is indicated by a bitmap, for example. The nth bit of the bitmap (or the nth leftmost bit) corresponds to the SSB with index n. When the value of a bit is 0, the bit indicates that the corresponding SSB is not transmitted. When the value of a bit is 1, the bit indicates that the corresponding SSB is transmitted. For each candidate cell / a candidate cell (or LTM candidate configuration), the UE determines the time domain behavior of a SSB from ssb-Periodicity and ssb-PositionsInBurst and the frequency domain behavior of a SSB is determined by the higher layer parameters subcarrierSpacing and ssb-Frequency.

[0441] Optionally, there is configuration information of CSI-RS resources for LTM (e.g., ltm-nzp-CSI-RS-Resource-Config). Optionally, the CSI-RS resource may be a non-zero-power (NZP) CSI-RS resource. Optionally, the configuration information may configure one or more NZP CSI-RS resources. For example, each NZP CSI-RS resource may be configured by the parameter NZP-CSI-RS-Resource. Optionally, an NZP CSI-RS resource / each NZP CSI-RS resource may be configured with at least one of the following parameters: 1) CSI-RS resource ID. For example, the ID of the CSI-RS resource is indicated by the parameter nzp-CSI-RS-ResourceId; 2) a resource mapping parameter (e.g., resourceMapping). Optionally, the resource mapping parameter indicates OFDM symbol location(s) in a slot and subcarrier occupancy in a PRB of the CSI-RS resource; 3) a power control offset parameter (e.g., powerControlOffset). Optionally, the power control offset parameter indicates the power offset between the RE of the PDSCH and the RE of the NZP CSI-RS; 4) a synchronization signal power control offset parameter (e.g., powerControlOffsetSS). Optionally, the synchronization signal power control offset parameter indicates the power offset between RE of the NZP CSI-RS and RE of the SSS (secondary synchronization signal); 5) a scrambling ID parameter (e.g., scramblingID). For example, the scrambling ID parameter is used to indicate scrambling ID of the CSI-RS resource; 6) a QCL parameter (e.g., qcl-InfoPeriodicCSI-RS). Optionally, the QCL parameter indicates TCI state ID. When the CSI-RS resource is periodic, the QCL parameter is configured; 7) frequency domain information. Optionally, the frequency domain information may include a frequency point parameter (e.g., absoluteFrequencyPointA). Optionally, the frequency domain information may indicate a frequency domain position (e.g., a frequency domain position of CRB#0). Optionally, the frequency domain information may indicate the frequency domain position referenced by a reference signal. Optionally, the frequency point parameter indicates the frequency domain position of point A. The frequency point parameter may indicate the absolute frequency of the reference CRB. Optionally, the reference CRB may be CRB # 0. The lowest subcarrier of CRB #0 is point A. Optionally, the center frequency of the lowest subcarrier (e.g., subcarrier #0) of CRB #0 is point A; 8) a subcarrier spacing parameter (e.g., subcarrierSpacing). Optionally, the subcarrier spacing parameter may indicate the subcarrier spacing of the CSI-RS.

[0442] Optionally, the information for indicating the RRC reconfiguration message (e.g., LTM-CandidateConfig) may be used to configure the LTM candidate configuration.

[0443] Optionally, the TCI-related information (e.g., LTM-TCI-Info) may be used for LTM candidate configuration. Optionally, the information is to be used during activation of TCI state(s) and / or upon the reception of the LTM cell switch procedure.

[0444] Optionally, the information for providing LTM configuration may configure one or more resource settings for LTM (LTM-CSI-ResourceConfig).

[0445] The UE may receive L1 / L2 signaling (e.g., DCI and / or MAC-CE) and perform switching in the candidate cell corresponding to the LTM candidate configuration based on the L1 / L2 signaling. For example, the UE has a current cell, and the UE receives the configuration of one or more candidate cells. Optionally, when the UE receives an L1 / L2 signaling indicating one of the candidate cells, the UE switches the current cell to the indicated candidate cell. Optionally, when the UE receives the L1 / L2 signaling indicating one of the candidate cells and the indication takes effect, the current cell of the UE is the indicated candidate cell. Optionally, the current cell may be a serving cell. Optionally, herein, the one or more candidate cells may all be special cells. When a certain candidate cell is switched / determined as the current cell, it may be considered that the candidate cell corresponds to the current special cell.

[0446] In the disclosure, the cell may be at least one of the current cell or the candidate cell.

[0447] FIG. 13 illustrates a flowchart of a method 1300 performed by a UE according to some embodiments of the disclosure.

[0448] Referring to FIG. 13, in operation S1310, the UE receives first information that configures or indicates information of a CSI report configuration.

[0449] In operation S1320, the UE transmits a PUCCH with second information that indicates or requests a CSI report for the CSI report configuration.

[0450] In operation S1330, the UE detects a first DCI format that indicates a physical uplink channel with the CSI report for the CSI report configuration.

[0451] In operation S1340, in case that the PUCCH is earlier than or no later than the first time before a PDCCH reception carrying the first DCI format, or in case that the PUCCH is transmitted in or before a time that is the first time before the PDCCH reception, the UE multiplexes the CSI report in the physical uplink channel.

[0452] In operation S1350, the UE transmits the physical uplink channel.

[0453] In some implementations, one or more of operations S1310 to S1350 may be performed based on methods described according to various embodiments of the disclosure.

[0454] In some implementations, the method 1300 may omit one or more of operations S1310 to S1350, or may include additional operations, such as operations that may be performed by the UE described according to various embodiments of the disclosure.

[0455] FIG. 14 illustrates a flowchart of a method 1400 performed by a base station according to some embodiments of the disclosure.

[0456] Referring to FIG. 14, in operation S1410, the base station transmits, to a UE, first information that configures or indicates information of a CSI report configuration.

[0457] In operation S1420, the base station receives, from the UE, a PUCCH with second information that indicates or requests a CSI report for the CSI report configuration.

[0458] In operation S1430, the base station transmits, to the UE, a first DCI format that indicates a physical uplink channel with the CSI report for the CSI report configuration.

[0459] In operation S1440, the base station receives the physical uplink channel from the UE. In case that the PUCCH is earlier than or no later than a first time before a physical downlink control channel (PDCCH) reception carrying the first DCI format, or in case that the PUCCH is transmitted in or before a time that is the first time before the PDCCH reception, the CSI report is multiplexed in the physical uplink channel.

[0460] In some implementations, one or more of operations S1410 to S1440 may be performed based on methods described according to various embodiments of the disclosure.

[0461] In some implementations, the method 1400 may omit one or more of operations S1410 to S1440, or may include additional operations, such as operations that may be performed by a base station described according to various embodiments of the disclosure.

[0462] Those skilled in the art will understand that the above illustrative embodiments are described herein and are not intended to be limiting. It should be understood that any two or more of the embodiments disclosed herein may be combined in any combination. Furthermore, other embodiments may be utilized and other changes may be made without departing from the spirit and scope of the subject matter presented herein. It will be readily understood that aspects of the embodiments of the disclosure as generally described herein and shown in the drawings may be arranged, replaced, combined, separated and designed in various different configurations, all of which are contemplated herein.

[0463] Those skilled in the art will understand that the various illustrative logic blocks, modules, circuits, and steps described in this application may be implemented as hardware, software, or a combination of both. To clearly illustrate this interchangeability between hardware and software, various illustrative components, blocks, modules, circuits, and steps are generally described above in the form of their functional sets. Whether such function sets are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. Technicians may implement the described function sets in different ways for each specific application, but such design decisions should not be interpreted as causing a departure from the scope of this application.

[0464] The various illustrative logic blocks, modules, and circuits described in this application may be implemented or performed by 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 devices, discrete gates or transistor logics, discrete hardware components, or any combination thereof designed to perform the functions described herein. The general purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration.

[0465] The steps of the method or algorithm described in this application may be embodied directly in hardware, in a software module executed by a processor, or in a combination thereof. The software module may reside in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor to enable the processor to read and write information from / to the storage medium. In an alternative, the storage medium may be integrated into the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a communication apparatus (e.g., a terminal or a base station). In an alternative, the processor and the storage medium may reside in a communication apparatus (e.g., a terminal or a base station) as discrete components.

[0466] In one or more exemplary designs, the functions may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, each function may be stored as one or more pieces of instructions or codes on a computer-readable medium or delivered through it. The computer-readable medium includes both a computer storage medium and a communication medium, the latter including any medium that facilitates the transfer of computer programs from one place to another. The storage medium may be any available medium that may be accessed by a general purpose or special purpose computer.

[0467] The above description is only example implementations of the embodiments the present disclosure, and is not intended to limit the scope of protection of the present disclosure, which is determined by the appended claims.

Claims

1.A method performed by a user equipment (UE) in a wireless communication system, the method comprising:receiving a plurality of channel state information (CSI) report configurations with a same physical uplink control channel (PUCCH) resource;identifying that at least one reference signal provided by a CSI report configuration among the plurality of CSI report configurations satisfies an event; andtransmitting one CSI report including indication information corresponding to the CSI report configuration.2.The method of claim 1, wherein the CSI report is zero padded to a fixed payload size, if a size of the CSI report is smaller than the fixed payload size, andthe fixed payload size is given by a maximum payload size among a plurality of payload sizes determined based on the plurality of CSI report configurations.3.The method of claim 1, wherein the plurality of CSI report configurations are associated with a same serving cell index.4.The method of claim 1, wherein if a mode for a CSI report is configured as a mode A, the plurality of CSI report configurations are associated with a same CSI trigger state.5.The method of claim 1, wherein if a mode for a CSI report is configured as a mode B, the plurality of CSI report configurations are associated with a same physical uplink shared channel (PUSCH) resource.6.The method of claim 1, wherein a plurality of bits for the indication information are placed at a beginning of the CSI report.7.A method performed by a base station in a wireless communication system, the method comprising:transmitting a plurality of channel state information (CSI) report configurations with a same physical uplink control channel (PUCCH) resource; andreceiving one CSI report including indication information corresponding to a CSI report configuration, among the plurality of CSI report configurations,wherein at least one reference signal provided by the CSI report configuration satisfies an event.8.The method of claim 7, wherein the CSI report is zero padded to a fixed payload size, if a size of the CSI report is smaller than the fixed payload size, andthe fixed payload size is given by a maximum payload size among a plurality of payload sizes determined based on the plurality of CSI report configurations.9.The method of claim 7, wherein the plurality of CSI report configurations are associated with a same serving cell index.10.The method of claim 7, wherein if a mode for a CSI report is configured as a mode A, the plurality of CSI report configurations are associated with a same CSI trigger state.11.The method of claim 7, wherein if a mode for a CSI report is configured as a mode B, the plurality of CSI report configurations are associated with a same physical uplink shared channel (PUSCH) resource.12.The method of claim 7, wherein a plurality of bits for the indication information are placed at a beginning of the CSI report.13.A user equipment (UE) in a wireless communication system, the UE comprising:a transceiver; andat least one processor coupled with the transceiver and configured to:receive a plurality of channel state information (CSI) report configurations with a same physical uplink control channel (PUCCH) resource,identify that at least one reference signal provided by a CSI report configuration among the plurality of CSI report configurations satisfies an event, andtransmit one CSI report including indication information corresponding to the CSI report configuration.14.The UE of claim 13, wherein the CSI report is zero padded to a fixed payload size, if a size of the CSI report is smaller than the fixed payload size, andthe fixed payload size is given by a maximum payload size among a plurality of payload sizes determined based on the plurality of CSI report configurations.15.A base station in a wireless communication system, the base station comprising:a transceiver; andat least one processor coupled with the transceiver and configured to:transmit a plurality of channel state information (CSI) report configurations with a same physical uplink control channel (PUCCH) resource, andreceive one CSI report including indication information corresponding to a CSI report configuration, among the plurality of CSI report configurations,wherein at least one reference signal provided by the CSI report configuration satisfies an event.

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