Apparatus in communication system and method performed by the same

Abstract

An apparatus in a communication system and a method performed by the same are provided. The method includes receiving first information that configures or indicates information of a channel state information (CSI) reporting configuration, where the first information includes information related to a first reference signal (RS), where the information related to the first RS includes information related to one or more first RS resources, in case that a first condition is satisfied, transmitting a physical uplink control channel (PUCCH) with second information that indicates or requests a CSI report for the CSI report configuration, where the first condition includes that an RS resource corresponding to an indicated transmission configuration indication (TCI) state is identical to one of the one or more first RS resources.

Description

APPARATUS IN COMMUNICATION SYSTEM AND METHOD PERFORMED BY THE SAME

[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] 5th generation (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 3.5 GHz, but also in "Above 6 GHz" bands referred to as mmWave including 28 GHz and 39 GHz. In addition, it has been considered to implement 6th generation (6G) mobile communication technologies (referred to as Beyond 5G systems) in terahertz bands (for example, 95 GHz to 3 THz 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 multi input multi output (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 bandwidth part (BWP), new channel coding methods such as a low density parity check (LDPC) 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 vehicle-to-everything (V2X) 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, new radio unlicensed (NR-U) 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, integrated access and backhaul (IAB) 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 dual active protocol stack (DAPS) 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 Augmented Reality (AR), Virtual Reality (VR), Mixed Reality (MR) 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 Orbital Angular Momentum (OAM), and Reconfigurable Intelligent Surface (RIS), 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 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] The disclosure provides a method and apparatus for data transmissions and receptions in a wireless communication system.

[0009] According to some aspects of the disclosure, a method performed by a user equipment (UE) in a wireless communication system is provided. The method includes: receiving first information that configures or indicates information of a channel state information (CSI) reporting configuration, wherein the first information includes information related to a first reference signal (RS), wherein the information related to the first RS includes information related to one or more first RS resources; in case that a first condition is satisfied, transmitting a physical uplink control channel (PUCCH) with second information that indicates or requests a CSI report for the CSI report configuration, wherein the first condition includes that an RS resource corresponding to an indicated transmission configuration indication (TCI) state is identical to one of the one or more first RS resources.

[0010] In combination with one or more aspects of the method performed by the UE described above, for example, the first condition further includes: for the CSI report configuration on a serving cell, the RS resource corresponding to the indicated TCI state of the serving cell being included in the first RS resource.

[0011] In combination with one or more aspects of the method performed by the UE described above, for example, a serving cell of the RS resource corresponding to the indicated TCI state is identical to a serving cell of the one of the one or more first RS resources.

[0012] In combination with one or more aspects of the method performed by the UE described above, for example, a bandwidth part (BWP) of the RS resource corresponding to the indicated TCI state is identical to a BWP of the one of the one or more first RS resources.

[0013] In combination with one or more aspects of the method performed by the UE described above, for example, a serving cell and a BWP of the RS resource corresponding to the indicated TCI state are identical to a serving cell and a BWP of the one of the one or more first RS resources.

[0014] In combination with one or more aspects of the method performed by the UE described above, for example, the information related to one or more first RS resources includes at least one of: an identifier (ID) of each of the one or more first RS resources; a BWP of each of the one or more first RS resources; or a serving cell of each of the one or more first RS resources.

[0015] In combination with one or more aspects of the method performed by the UE described above, for example, the RS resource includes at least one of: a non-zero power (NZP)-channel state information (CSI)-RS resource; a CSI-interference measurement (IM)-resource; or a CSI-synchronization signal block (SSB)-resource.

[0016] In combination with one or more aspects of the method performed by the UE described above, for example, it further includes not transmitting the PUCCH with the second information in case that the first condition is not satisfied.

[0017] 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, to a user equipment (UE), first information that configures or indicates information of a channel state information (CSI) reporting configuration, wherein the first information includes information related to a first reference signal (RS), wherein the information related to the first RS includes information related to one or more first RS resources; receiving, from the UE, a PUCCH with second information that indicates or requests a CSI report for the CSI report configuration, wherein the PUCCH with the second information is transmitted by the UE in case that a first condition is satisfied, wherein the first condition includes that an RS resource corresponding to an indicated transmission configuration indication (TCI) state is identical to one of the one or more first RS resources.

[0018] In combination with one or more aspects of the method performed by the base station described above, for example, the first condition further includes: for the CSI report configuration on a serving cell, the RS resource corresponding to the indicated TCI state of the serving cell being included in the first RS resource.

[0019] In combination with one or more aspects of the method performed by the base station described above, for example, a serving cell of the RS resource corresponding to the indicated TCI state is identical to a serving cell of the one of the one or more first RS resources.

[0020] In combination with one or more aspects of the method performed by the base station described above, for example, a bandwidth part (BWP) of the RS resource corresponding to the indicated TCI state is identical to a BWP of the one of the one or more first RS resources.

[0021] In combination with one or more aspects of the method performed by the base station described above, for example, a serving cell and a BWP of the RS resource corresponding to the indicated TCI state are identical to a serving cell and a BWP of the one of the one or more first RS resources.

[0022] In combination with one or more aspects of the method performed by the base station described above, for example, the one or more first RS resource related information includes at least one of: an identifier (ID) of each of the one or more first RS resources; a BWP of each of the one or more first RS resources; a serving cell of each of the one or more first RS resources.

[0023] In combination with one or more aspects of the method performed by the base station described above, for example, the RS resource includes at least one of: a Non-Zero-Power (NZP)-channel state information (CSI)-RS resource; a CSI-interference measurement (IM)-resource; a CSI-synchronization signal block (SSB)-resource.

[0024] In combination with one or more aspects of the method performed by the base station described above, for example, in case that the first condition is not satisfied, the PUCCH carrying the second information is not transmitted.

[0025] According to some aspects of the disclosure, there is also provided a UE in a wireless communication system. The UE includes a transceiver, and one or more processors coupled with the transceiver and configured to perform one or more aspects of the above-mentioned methods performed by the UE.

[0026] 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 one or more processors coupled with the transceiver and configured to perform one or more aspects of the methods performed by the base station.

[0027] 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.

[0028] 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.

[0029] 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:

[0030] FIG. 1 illustrates a schematic diagram of an example wireless network according to some embodiments of the disclosure;

[0031] FIG. 2A illustrates an example wireless transmission path according to some embodiments of the disclosure;

[0032] FIG. 2B illustrates an example wireless reception path according to some embodiments of the disclosure;

[0033] FIG. 3A illustrates an example user equipment (UE) according to some embodiments of the disclosure;

[0034] FIG. 3B illustrates an example gNB according to some embodiments of the disclosure;

[0035] FIG. 4 illustrates a block diagram of a first transceiving node according to some example embodiments of the disclosure;

[0036] FIG. 5 illustrates a block diagram of a second transceiving node according to some example embodiments of the disclosure;

[0037] FIG. 6 illustrates a flowchart of a method performed by a base station according to some example embodiments of the disclosure;

[0038] FIG. 7 illustrates a flowchart of a method performed by a UE according to some example embodiments of the disclosure;

[0039] FIG. 8A illustrates an example of uplink transmission timing according to some example embodiments of the disclosure;

[0040] FIG. 8B illustrates an example of uplink transmission timing according to some example embodiments of the disclosure;

[0041] FIG. 8C illustrates an example of uplink transmission timing according to some example embodiments of the disclosure;

[0042] FIG. 9 illustrates a flowchart of a method performed by a UE according to some example embodiments of the disclosure;

[0043] FIG. 10 illustrates a flowchart of a method performed by a base station according to some example embodiments of the disclosure.

[0044] 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.

[0045] 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 can be implemented in hardware or a combination of hardware and software and / or firmware. The functionality associated with any particular controller can 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 can be used, and only one item in the list can 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.

[0046] Moreover, various functions described below can 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 can be permanently stored and media where data can be stored and later overwritten, such as a rewritable optical disc or an erasable memory device.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] In the disclosure, to determine whether a specific condition is satisfied or met, 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.

[0053] 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 can 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.

[0054] The various embodiments discussed below for describing the principles of the disclosure in the disclosure 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 can 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 can 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 can 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 can be applied to future-oriented communication technologies.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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 can be used without departing from the scope of the disclosure.

[0059] 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.

[0060] Depending on a type of the network, other well-known terms such as "base station (BS)" or "access point" can be used instead of "gNodeB" or "gNB". For convenience, the terms "gNodeB" and "gNB" are used in this patent document to refer to network infrastructure components that provide wireless access for remote terminals. And, depending on the type of the network, other well-known terms such as "mobile station", "user station", "remote terminal", "wireless terminal" or "user apparatus" can be used instead of "user equipment" or "UE". For 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).

[0061] 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 can communicate with each other and with UEs 111-116 using 5G, Long Term Evolution (LTE), LTE-A, WiMAX or other advanced wireless communication technologies.

[0062] 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.

[0063] 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.

[0064] Although FIG. 1 illustrates an example of the wireless network 100, various changes can be made to FIG. 1. The wireless network 100 can include any number of gNBs and any number of UEs in any suitable arrangement, for example. Furthermore, gNB 101 can directly communicate with any number of UEs and provide wireless broadband access to the network 130 for those UEs. Similarly, each gNB 102-103 can 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 can provide access to other or additional external networks, such as external telephone networks or other types of data networks.

[0065] 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 can be described as being implemented in a gNB, such as gNB 102, and the reception path 250 can be described as being implemented in a UE, such as UE 116. However, it should be understood that the reception path 250 can be implemented in a gNB and the transmission path 200 can be implemented in a UE. In some 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.

[0066] 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.

[0067] 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 can also be filtered at a baseband before switching to the RF frequency.

[0068] 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.

[0069] 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.

[0070] Each of the components in FIGS. 2A and 2B can be implemented using only hardware, or using a combination of hardware and software / firmware. As a specific example, at least some of the components in FIGS. 2A and 2B may be implemented in software, while other components may be implemented in configurable hardware or a combination of software and configurable hardware. For example, the FFT 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.

[0071] Furthermore, although described as using FFT and IFFT, this is only illustrative and should not be interpreted as limiting the scope of the disclosure. Other types of transforms can be used, such as Discrete Fourier transform (DFT) and Inverse Discrete Fourier Transform (IDFT) functions. It should be understood that for DFT and IDFT functions, the value of variable N may be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of variable N may be any integer which is a power of 2 (such as 1, 2, 4, 8, 16, etc.).

[0072] Although FIGS. 2A and 2B illustrate examples of wireless transmission and reception paths, various changes may be made to FIGS. 2A and 2B. For example, various components in FIGS. 2A and 2B can be combined, further subdivided or omitted, and additional components can be added according to specific requirements. Furthermore, FIGS. 2A and 2B are intended to illustrate examples of types of transmission and reception paths that can be used in a wireless network. Any other suitable architecture can be used to support wireless communication in a wireless network.

[0073] 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 can have the same or similar configuration. However, a UE has various configurations, and FIG. 3A does not limit the scope of the disclosure to any specific implementation of the UE.

[0074] 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.

[0075] 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).

[0076] 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.

[0077] The controller / processor 307 can include one or more processors or other processing devices and execute an OS 312 stored in the memory 311 in order to control the overall operation of UE 116. For example, the controller / processor 307 can control the reception of forward channel signals and the transmission of backward channel signals through the RF transceiver 302, the RX processing circuit 305 and the TX processing circuit 303 according to well-known principles. In some implementations, the controller / processor 307 includes at least one microprocessor or microcontroller.

[0078] The controller / processor 307 is also capable of executing other processes and programs residing in the memory 311, such as operations for channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the disclosure. The controller / processor 307 can move data into or out of the memory 311 as required by an execution process. In some 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.

[0079] The controller / processor 307 is also coupled to the input device(s) 309 and the display 310. An operator of UE 116 can input data into UE 116 using the input device(s) 309. The display 310 may be a liquid crystal display or other display capable of presenting text and / or at least limited graphics (such as from a website). The memory 311 is coupled to the controller / processor 307. A part of the memory 311 can include a random access memory (RAM), while another part of the memory 311 can include a flash memory or other read-only memory (ROM).

[0080] Although FIG. 3A illustrates an example of UE 116, various changes can be made to FIG. 3A. For example, various components in FIG. 3A can be combined, further subdivided or omitted, and additional components can be added according to specific requirements. As a specific example, the processor / controller 340 can be divided into a plurality of processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Furthermore, although FIG. 3A illustrates that the UE 116 is configured as a mobile phone or a smart phone, UEs can be configured to operate as other types of mobile or fixed devices.

[0081] 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)).

[0082] 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 can have the same or similar configuration. However, a gNB has various configurations, and FIG. 3B does not limit the scope of the disclosure to any specific implementation of a gNB. It should be noted that gNB 101 and gNB 103 can include the same or similar structures as gNB 102.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] The controller / processor 378 can include one or more processors or other processing devices that control the overall operation of gNB 102. For example, the controller / processor 378 can control the reception of forward channel signals and the transmission of backward channel signals through the RF transceivers 372a-372n, the RX processing circuit 376 and the TX processing circuit 374 according to well-known principles. The controller / processor 378 can also support additional functions, such as higher-level wireless communication functions. For example, the controller / processor 378 can perform a Blind Interference Sensing (BIS) process such as that performed through a BIS algorithm, and decode a received signal from which an interference signal is subtracted. A controller / processor 378 may support any of a variety of other functions in gNB 102. In some implementations, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0087] The controller / processor 378 is also capable of executing programs and other processes residing in the memory 380, such as a basic OS. The controller / processor 378 can also support channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the disclosure. In some implementations, the controller / processor 378 supports communication between entities such as web RTCs. The controller / processor 378 can move data into or out of the memory 380 as required by an execution process.

[0088] The controller / processor 378 is also coupled to the backhaul or network interface 382. The backhaul or network interface 382 allows gNB 102 to communicate with other devices or systems through a backhaul connection or through a network. The backhaul or network interface 382 can support communication over any suitable wired or wireless connection(s). For example, when gNB 102 is implemented as a part of a cellular communication system, such as a cellular communication system supporting 5G or new radio access technology or NR, LTE or LTE-A, the backhaul or network interface 382 can allow gNB 102 to communicate with other gNBs through wired or wireless backhaul connections. When gNB 102 is implemented as an access point, the backhaul or network interface 382 can allow gNB 102 to communicate with a larger network, such as the Internet, through a wired or wireless local area network or through a wired or wireless connection. The backhaul or network interface 382 includes any suitable structure that supports communication through a wired or wireless connection, such as an Ethernet or an RF transceiver.

[0089] The memory 380 is coupled to the controller / processor 378. A part of the memory 380 can include an RAM, while another part of the memory 380 can include a flash memory or other ROMs. In certain embodiments, a plurality of instructions, such as the BIS algorithm, are stored in the memory. The plurality of instructions are configured to cause the controller / processor 378 to execute the BIS process and decode the received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0090] 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.

[0091] Although FIG. 3B illustrates an example of gNB 102, various changes may be made to FIG. 3B. For example, gNB 102 can include any number of each component shown in FIG. 3A. As a specific example, the access point can include many backhaul or network interfaces 382, and the controller / processor 378 can support routing functions to route data between different network addresses. As another specific example, although shown as including a single instance of the TX processing circuit 374 and a single instance of the RX processing circuit 376, gNB 102 can include multiple instances of each (such as one for each RF transceiver).

[0092] 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 can 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.

[0093] 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 satisfy 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 can feedback HARQ-ACK is variable. For example, the delay of HARQ-ACK feedback can be dynamically indicated by physical layer signaling, or different HARQ-ACK delays can be determined based on factors such as different services or user capabilities.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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).

[0099] 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.

[0100] - MIB (master information block)

[0101] - SIB (system information block) or SIB X (X = 1,2, ...)

[0102] - RRC signaling

[0103] - MAC CE

[0104] 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.

[0105] - PDCCH (physical downlink control channel)

[0106] - DCI (downlink control information)

[0107] - UE-specific DCI

[0108] - group common DCI

[0109] - common DCI (e.g., multicast DCI)

[0110] - scheduling DCI (e.g., DCI for scheduling downlink or uplink data)

[0111] - non-scheduling DCI (e.g., DCI other than DCI for scheduling downlink or uplink data)

[0112] - PUCCH (physical uplink control channel)

[0113] - UCI (uplink control information)

[0114] - Paging

[0115] - PRACH (physical random access channel)

[0116] - RAR (random access response)

[0117] 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.

[0118] 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.

[0119] FIG. 4 illustrates a block diagram of a first transceiving node 400 according to some example embodiments of the disclosure.

[0120] Referring to FIG. 4, the first transceiving node 400 may include a transceiver 401 and a controller 402.

[0121] 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.

[0122] 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.

[0123] 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 can be performed by a base station.

[0124] 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.

[0125] Herein, depending on the network type, the term "base station" or "BS" can 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.

[0126] FIG. 5 illustrates a block diagram of a second transceiving node according to some embodiments of the disclosure.

[0127] Referring to FIG. 5, the second transceiving node 500 may include a transceiver 501 and a controller 502.

[0128] 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.

[0129] 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.

[0130] 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 can be performed by a terminal (UE).

[0131] 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.

[0132] 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.

[0133] 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).

[0134] It should be noted that in the description of the example embodiments of the disclosure, the following terms may be used interchangeably:

[0135] - DCI

[0136] - DCI format

[0137] - PDCCH

[0138] - grant

[0139] - dynamic grant.

[0140] 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.

[0141] 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.

[0142] In some implementations, the CSI report may be Part 1 CSI and / or Part 2 CSI.

[0143] 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.

[0144] 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.

[0145] 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 subslots, one or more OFDM symbols, one or more spans, one or more subframes, one or more frames or one or more half frames.

[0146] FIG. 6 illustrates a flowchart of a method 600 performed by a base station according to some example embodiments of the disclosure.

[0147] 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.

[0148] 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.

[0149] 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).

[0150] 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).

[0151] FIG. 7 illustrates a flowchart of a method 700 performed by a UE according to example embodiments of the disclosure.

[0152] 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.

[0153] 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.

[0154] 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.

[0155] [HARQ / scheduling general timing]

[0156] 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).

[0157] 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).

[0158] In some implementations, acknowledgement / negative acknowledgement (ACK / NACK) for downlink transmission(s) may be performed through HARQ-ACK.

[0159] Some examples of uplink transmission timing will be described below with reference to FIGS. 8A-8C.

[0160] 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."

[0161] 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).

[0162] 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 subslots. 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.

[0163] 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.

[0164] 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.

[0165] 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 subslots. 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.

[0166] 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.

[0167] In some implementations, the base station may configure higher layer signaling for the UE based on a UE capability received from the UE.

[0168] In some implementations, downlink channels (downlink resources) may include PDCCHs and / or PDSCHs. Uplink channels (uplink resources) may include PUCCHs and / or PUSCHs..

[0169] 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).

[0170] 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.

[0171] 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.

[0172] 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.

[0173] 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 / subslot". "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).

[0174] 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.

[0175] It should be noted that in the example embodiments of the disclosure, multiple approaches / methods can 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.

[0176] It should be noted that multiple steps in the method of the disclosure can be implemented in any order.

[0177] 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.

[0178] 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).

[0179] 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.

[0180] It should be noted that in the description of the example embodiments of the disclosure, "slot" may be replaced with "subslot" or "time unit".

[0181] 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.

[0182] In the description of example embodiments of the disclosure, the following descriptions may be used interchangeably:

[0183] - A time interval between a first physical channel and a second physical channel is a first time

[0184] - A time interval from a first physical channel to a second physical channel is a first time

[0185] - A time interval from a second physical channel to a first physical channel is a first time

[0186] - 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

[0187] - 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

[0188] In the description of example embodiments of the disclosure, the following descriptions may be used interchangeably:

[0189] - A time interval between a first physical channel and a second physical channel is greater than (or not less than) a first time

[0190] - A time interval from a first physical channel to a second physical channel is greater than (or not less than) a first time

[0191] - A time interval from a second physical channel to a first physical channel is greater than (or not less than) the first time

[0192] - 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

[0193] - 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

[0194] - 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)

[0195] 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)".

[0196] 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.

[0197] 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).

[0198] 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.

[0199] 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.

[0200] 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.

[0201] 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.

[0202] 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.

[0203] 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.

[0204] 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.

[0205] 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.

[0206] It should be noted that the embodiments of the disclosure may be applicable to one serving cell or multiple serving cells.

[0207] It should be noted that the embodiments of the disclosure may be applicable to one BWP or multiple BWPs. The BWP may be a DL BWP and / or UL BWP.

[0208] 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.

[0209] 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.

[0210] 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..

[0211] It should be noted that in the example embodiments of the disclosure, the terms "index", "identification", "identifier", and "number" may be used interchangeably.

[0212] 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".

[0213] 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.

[0214] 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:

[0215] - beam;

[0216] - spatial filter;

[0217] - spatial domain filter;

[0218] - spatial domain transmission filter;

[0219] - spatial setting;

[0220] - quasi co-location (QCL) assumption;

[0221] - QCL parameter (QCL-type (e.g., type D (typeD)) parameter / reference signal);

[0222] - TCI state;

[0223] - unified TCI state;

[0224] - spatial relationship;

[0225] - RS (reference signal);

[0226] - information related to sounding reference signal (SRS) (e.g., SRS resource indication (SRI)).

[0227] In some implementations, the RS may be an RS corresponding to a beam. For example, the RS may be CSI-RS or SSB.

[0228] 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.

[0229] 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.

[0230] 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. 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.

[0231] 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.

[0232] In some implementations, the fourth information may also include at least one of uplink data, HARQ-ACK information, CSI report, or other UCI information.

[0233] 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 reporting (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.

[0234] 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 UE-initiated or event-driven beam report. The fourth information may be a L1-RSRP and / or L1-SINR report.

[0235] 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.

[0236] In some implementations, the beam related information may be at least one of the following:

[0237] - CSI report

[0238] - beam management information

[0239] - beam measurement information

[0240] - BFR (beam failure recovery)

[0241] As some examples, the beam management information may refer to information related to beam management.

[0242] As some examples, the beam measurement information may refer to information related to beam measurement.

[0243] As some examples, the BFR may refer to information related to a BFR procedure.

[0244] 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.

[0245] 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.

[0246] 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.

[0247] 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.

[0248] 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.

[0249] 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.

[0250] 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.

[0251] 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.

[0252] As used herein, an RS may be a CSI-RS and / or an SSB. The term "RS" may be replaced with "RS resource".

[0253] Optionally, the first PUCCH (e.g., the first PUCCH with the second information in operation S730, as described above) may be event driven. Herein, the term "event' may be used interchangeably with the term "condition" or "condition of an event". Herein, the event may include at least one of Type 1 event (event 1), Type 2 event (event 2), or Type 3 event (event 3). The event or event type may be predefined or configured by the base station. For example, the event or event type may be indicated by a CSI report configuration. For example, the event or event type may be indicated by a parameter (e.g., eventType-r19) included in the CSI report configuration. For example, the base station may configure at least one of Type 1 event, Type 2 event, or Type 3 event. Optionally, the UE may transmit the first PUCCH based on the configured event. Herein, L1-RSRP is an example of a reference signal related quantity. The reference signal related quantity may also be of other types, such as L1-SINR, CQI, reference signal received quality (RSRQ), etc. In the disclosure, the quantity may be referred to as L1 quantity. In the disclosure, the UE may obtain a reference signal related quantity through measurement. The quantity obtained by the UE through measurement may be called a measured quantity. In the disclosure, the UE may report to the base station a reference signal related quantity obtained based on the measurement of a reference signal. The quantity reported by the UE to the base station may be called a reported quantity.

[0254] Type 1 event may be defined as the following: L1-RSRP of the reference signal resource associated with the indicated TCI state is less than or equal to a first threshold.

[0255] Type 2 event may be defined as the following: the comparison of L1-RSRP of at least one resource in a resource set and L1-RSRP of the reference signal associated with the indicated TCI state is greater than or equal to a second threshold.

[0256] Type 3 event may be defined as the following: the comparison of L1-RSRP of at least one resource in the resource set and L1-RSRP of the reference signal with the Q-th highest L1-RSRP among the reference signals associated with the activated TCI states is greater than or equal to a third threshold.

[0257] 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.

[0258] 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.

[0259] 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.

[0260] 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 states.

[0261] Optionally, the UE may receive RRC that may indicate / include configuration information for configuring TCI state(s). Optionally, the UE may receive the configuration information for configuring TCI state(s). For example, the configuration information for configuring TCI state(s) is dl-OrJointTCI-StateList. Or, the configuration information for configuring TCI state(s) may be in a higher layer parameter (e.g., PDSCH-Config) for configuring UE-specific PDSCH parameters. Optionally, the configuration information for configuring TCI state(s) indicates / configures M TCI states. Optionally, M≥1 and / or M≤128. When M = 1, the indicated TCI state refers to the TCI state configured by the higher layer parameter related to TCI state. Optionally, the UE applies the indicated TCI after receiving the configuration information for configuring TCI state(s).

[0262] Optionally, the UE may receive PDCCH configuration information for configuring a PDCCH. Optionally, the PDCCH configuration information may be used to monitor DCI, where the DCI may include a field indicating a TCI state. The field may be called a TCI field. The size of the TCI field may be predefined or indicated by the base station. For example, the size of the TCI field is 1 bit, 2 bits, or 3 bits. The TCI field may correspond to several codepoints, which may be called TCI codepoints. Or, the indicated TCI state may be indicated by the TCI field. For example, the UE may obtain the codepoint corresponding to the value of the TCI field in the DCI by detecting the DCI. The UE may determine the indicated TCI state according to the TCI state corresponding to the codepoint.

[0263] The mapping between TCI codepoints and one or more configured TCI states (e.g., M TCI states) may be indicated by a MAC-CE. Optionally, the UE may receive the MAC-CE from the base station. Optionally, the MAC-CE may activate / indicate one or more TCI states, or the MAC-CE may activate / indicate one or more pairs of TCI states. Optionally, the MAC-CE may be used to map one or more TCI codepoints to TCI states. The TCI state indicated / activated by the MAC-CE may be called an activated TCI state. Optionally, the activated TCI state(s) is / are at least one of the configured M TCI states. If the MAC-CE only maps TCI state(s) to one TCI codepoint, the UE applies the TCI state(s) corresponding to the codepoint. If the MAC-CE only maps the TCI state(s) to one TCI codepoint, the TCI state(s) corresponding to the codepoint is the indicated TCI state(s).

[0264] Optionally, one codepoint may be mapped with one TCI state. For example, one codepoint may be mapped with one joint TCI state. Optionally, the joint TCI state may be DL TCI state for DL channel / signal and UL TCI state for UL channel / signal. Optionally, one codepoint may be mapped with one TCI state pair. A TCI state pair may include a downlink TCI state and an uplink TCI state. Optionally, the DL TCI state is for DL channel(s) / signal(s). Optionally, the UL TCI state is for UL channel(s) / signal(s).

[0265] The UE may obtain the indicated TCI state through the above methods. The UE may obtain an indicated TCI state. The UE may use / apply the indicated TCI state to receive a downlink channel / downlink signal and / or transmit an uplink channel / uplink signal. The UE may use / apply an indicated first TCI state and / or an indicated second TCI state to receive a downlink channel / downlink signal, and / or transmit an uplink channel / uplink signal.

[0266] Herein, the UE applies the indicated TCI state carried by DCI when at least one of the following conditions is satisfied: 1) the UE is configured with the dl-OrJointTCI-StateList parameter; 2) the UE would transmit HARQ-ACK information corresponding to the DCI (optionally, the HARQ-ACK information is HARQ-ACK; optionally, the HARQ-ACK information is carried by PUSCH or PUCCH; optionally, the DCI is without DL assignment, or the DCI schedules one or more PDSCHs); 3) the indicated TCI State(s) is / are different from the previously indicated one(s). Optionally, the indicated TCI state is applied after the DCI. Optionally, the indicated TCI state is applied starting from the first slot that is at leastbeamAppTimesymbols after the last symbol of the UL channel carrying the HARQ-ACK information. Here,beamAppTimeis a parameter that defines the minimum delay, in symbols, from the end of PUCCH or PUSCH transmission to the application of the new TCI state. This parameter ensures that there is sufficient time to process and prepare the new transmission before applying the new TCI state. Optionally,beamAppTimemay be predefined or indicated by the base station. The value ofbeamAppTimemay be one of 1, 2, 3, 4, 14, 28, 42, 56, 70, 84, 98, 112, 224, or 336.

[0267] In the disclosure, the indicated TCI state may be applied to one serving cell or multiple serving cells. The indicated TCI state may be applied to one or more BWPs in a serving cell.

[0268] In the disclosure, the activated TCI state may be applied to one serving cell or multiple serving cells. The activated TCI state may be applied to one or more BWPs in a serving cell.

[0269] The UE needs to measure a reference signal in order to initiate / determine / report CSI. For example, the UE transmitting the second information and / or the fourth information is based on measurement of a reference signal. Optionally, the UE may obtain reference signal resource(s) for measurement. Optionally, the UE may obtain reference signal resource(s) for measurement by a CSI report configuration. Optionally, the measurement may be channel measurement and / or interference measurement. The reference signal resource used for measurement may be a reference signal resource used for link quality assessment. Optionally, the reference signal resource(s) used for measurement include reference signal resource(s) associated with a CSI report configuration, and / or reference signal resource(s) associated with the indicated TCI state, and / or reference signal resource(s) associated with the activated TCI state.

[0270] Optionally, the reference signal resource(s) associated with the CSI report configuration may include reference signal resource(s) indicated / configured by the CSI report configuration. Optionally, the CSI report configuration may indicate / configure / be associated with / correspond to K resources, K ≥ 1. Optionally, the CSI report configuration may indicate / configure / be associated with / correspond to a resource set, where the resource set includes K resources, K ≥ 1. Optionally, the resource set may be configured by the newBeamResourceSetEvent2-r19 parameter in the CSI report configuration. The parameter may be used to configure the resource set. Optionally, the serving cell where the resources in the resource set are located may be indicated by the base station, or predefined. For example, the serving cell where the resources in the resource set are located is configured by the carrier parameter in the CSI report configuration. The parameter may be used to indicate the serving cell in which the resource set is located. If the carrier parameter is not configured in the CSI report configuration, the serving cell where the resources in the resource set are located is the serving cell where the CSI report configuration is located. Optionally, the resource set may be a new beam resource set. Optionally, the resource set may be used to configure new beam(s). Optionally, the resource set may be used for measurement and / or for link quality assessment. Optionally, the measurement may be channel measurement and / or interference measurement. Optionally, the reference signals in the resource set are of the same type. Optionally, the type of the reference signal includes SSB or CSI-RS. Optionally, the type of the CSI-RS includes a reference signal for tracking, a reference signal for beam management, or a reference signal for CSI acquisition. Optionally, when the reference signal resource is a CSI-RS resource, the resource associated with the CSI report configuration may be periodic / semi-persistent.

[0271] Optionally, the reference signal associated with the indicated TCI state may be a reference signal corresponding to the indicated TCI state. Optionally, the reference signal associated with the indicated TCI state may be at least one of the following: mode #1) SSB quasi-co-located (QCLed) with the QCL reference signal of the indicated TCI state; mode #2) QCL reference signal of the indicated TCI state. Optionally, a TCI state may be associated / include / correspond to one or two QCL reference signals. Optionally, if a TCI state is associated with / includes / corresponds to two QCL reference signals, the reference signal associated with the TCI state is a QCL type D reference signal among the two QCL reference signals.

[0272] Optionally, the reference signal resources associated with the indicated TCI state may be determined based on mode #1 or mode #2. Optionally, mode #1 or mode #2 may be indicated by the base station. For example, a parameter included in the CSI report configuration indicates mode #1 or mode #2. Optionally, the reference signal resources associated with the indicated TCI state may be determined based on the reference signal resources associated with the CSI report configuration. Optionally, the reference signal resources associated with the indicated TCI state may be determined based on the type of reference signal resources associated with the CSI report configuration. Optionally, if the resources in the resource set are SSB resources, the reference signal associated with the indicated TCI state is determined based on mode #1. If the resources in the resource set are CSI-RS resources (e.g., reference signal resources with the parameter repetition), the reference signal associated with the indicated TCI state is determined based on mode #2.

[0273] Optionally, the type of the reference signal associated with the indicated TCI state is the same as the type of the reference resources included in the resource set.

[0274] Or, the reference signal associated with the indicated TCI state and the reference resources included in the resource set may be SSB. Optionally, in case that the reference signal associated with the indicated TCI state and / or the reference signal in the resource set is SSB, the PCI of the SSB associated with the indicated TCI state is the same as the PCI of the SSB in the resource set. This method allows the UE to compare measurements for SSBs from a same physical cell in order for the UE to initiate CSI reporting for the physical cell.

[0275] In some cases, the UE may be configured with one or more serving cells / BWPs, with different indicated TCI states on different serving cells / BWPs. It needs to be clarified which indicated TCI state is used for event detection. The following method can prevent the UE from initiating CSI using the incorrect indicated TCI state, thereby improving the reliability of the communication system. Optionally, the indicated TCI state is an indicated TCI state associated with a specific serving cell, or the indicated TCI state is an indicated TCI state associated with a specific BWP in a specific serving cell. For example, the indicated TCI state for initiating CSI (or, for reporting CSI, or, for event determination, or, event association) may be the indicated TCI state associated with a specific serving cell, or the indicated TCI state associated with a specific BWP in a specific serving cell. Optionally, the specific serving cell is indicated by the base station, or the specific serving cell is predefined. For example, the specific serving cell is indicated by a parameter (e.g., carrier) in the CSI report configuration. For example, when the CSI report configuration includes the parameter (e.g., carrier), the specific serving cell is indicated by the parameter. For example, when the CSI report configuration does not include the parameter (e.g., carrier), the specific serving cell is a serving cell where the CSI report configuration is located. For example, the specific serving cell is a serving cell where the resources in the resource set are located. The method of determining the serving cell where the resources in the resource set are located may refer to the above description. Optionally, the specific BWP may be indicated by the base station, or the specific BWP may be a predefined BWP. For example, the specific BWP is indicated by a parameter in the CSI report configuration. For example, when the CSI report configuration includes the parameter, the specific BWP is indicated by the parameter. For example, when the CSI report configuration does not include the parameter, the specific BWP is a predefined BWP. Optionally, the parameter used to indicate the specific BWP is the same as or different from the parameter used to indicate the specific serving cell. For example, the ID of the specific serving cell and the ID of the specific BWP may be indicated by the parameter ServingCellAndBWP-Id. This parameter may be used to indicate the serving cell ID and BWP ID. Here, the BWP may be a downlink BWP. The predefined BWP may be an active BWP, or initial BWP, or default BWP, or BWP with the smallest ID, or BWP with the largest ID.

[0276] In the disclosure, the indicated TCI state associated with a specific serving cell refers to the indicated TCI state applied / used on the specific serving cell. In the disclosure, the indicated TCI state associated with a specific BWP refers to the indicated TCI state applied / used on the specific BWP.

[0277] Optionally, the indicated TCI state refers to the latest indicated TCI state before the first PUCCH. Optionally, the indicated TCI state refers to the latest indicated TCI state before the reference resource associated with the first PUCCH. Optionally, the indicated TCI state refers to the latest indicated TCI state before a second uplink channel. Optionally, the indicated TCI state refers to the latest indicated TCI state before the CSI reference resource corresponding to the CSI report carried by the second uplink channel. Because the indicated TCI state may be time-varying, the method can clarify which indicated TCI state may be used for the initiation of CSI or for the event determination, thereby preventing the UE from using the incorrect indicated TCI state to initiate CSI or determine events, which can improve the reliability of the UE.

[0278] It should be noted that in the description of the embodiments of the disclosure, the description that "the indicated TCI state refers to a specific TCI state" may be understood as the indicated TCI state being the same as the specific TCI state. For example, the description that "the indicated TCI state refers to the latest indicated TCI state before the first PUCCH" may be understood as "the indicated TCI state being the same as the latest indicated TCI state before the first PUCCH".

[0279] It should be noted that the latest indicated TCI state may be the TCI state indicated in the latest PDCCH reception, or the TCI state indicated by the DCI format in the latest PDCCH reception. The latest indicated TCI state may also be the latest indicated TCI state that is a second time before the first PUCCH. The second time may be configured by higher layer signaling and / or reported by a UE capability and / or specified by protocols. The latest indicated TCI state may also be the valid (or applied) TCI state.

[0280] In some implementations, when the UE is configured with mode B or second mode, the UE transmits the first (or earliest) second PUSCH that is X symbols after the first PUCCH, where the second PUSCH carries the fourth information corresponding to the CSI report configuration. Here, X may be configured through higher layer signaling. If the UE is configured with mode A or first mode, when the UE detects a CSI aperiodic trigger state (CSI-AperiodicTriggerState) indicated by a CSI request field (CSI request) in a DCI format corresponding to the CSI report configuration, the UE transmits a second PUSCH indicated (or scheduled) by the DCI format, where the second PUSCH carries the fourth information corresponding to the CSI report configuration.

[0281] In an example, for a CSI report configuration, a second PUSCH (e.g., a second PUSCH transmitted by the UE) carries the fourth information, where the RS of the current beam included in the fourth information is the same as the RS obtained by (or associated with) the latest indicated TCI state, and the second PUSCH is associated with the first PUCCH. For example, for Mode B, the PUSCH associated with the first PUCCH may be the first (or earliest) second PUSCH that is X symbols after the first PUCCH.

[0282] In another example, for a CSI report configuration configured in a first serving cell, a second PUSCH (for example, a second PUSCH transmitted by the UE) carries the fourth information, where the second PUSCH is in a second serving cell, which may be the same as the first serving cell. For a third serving cell, the RS of the current beam included in the fourth information is the same as the RS obtained from (or associated with) the latest indicated TCI state, and the second PUSCH is associated with the first PUCCH. The third serving cell may be at least one of the following:

[0283] - The first serving cell: e.g., parameter 'carrier' is not in the CSI report configuration.

[0284] - The second serving cell: e.g., parameter 'carrier' is not in the CSI report configuration.

[0285] - A serving cell indicated by parameter 'carrier' in the CSI report configuration.

[0286] - A serving cell where the RS of the current beam is located, for example, which may be configured by a higher layer signaling parameter.

[0287] - A serving cell where the new beam resource is located.

[0288] It should be noted that the description that "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" may include that the indicated TCI state does not change within a predefined time, or the UE does not expect that the indicated TCI state changes within the predefined time, or the UE does not expect that the TCI states indicated by other DCI formats are different from the latest indicated TCI state within the predefined time. For example, within the predefined time, the values of the TCI states indicated by all DCI formats are the same, where the TCI states indicated by the all DCI formats are applied to a same serving cell. For example, within the predefined time, the TCI states indicated by any two DCI formats have the same value. Or, the UE does not expect that the values of the TCI states indicated by any two DCI formats are different within the predefined time, where the TCI states indicated by the any two DCI formats are applied to a same serving cell. Here, the values of the TCI states indicated by the DCI formats being (all) the same may be understood as the TCI states indicated by the DCI formats being (all) the same as the latest indicated TCI state.

[0289] In some implementations, the predefined time may be a period of time before the first PUCCH, and the length of the predefined time may be configured by higher layer signaling. The predefined time may be a period of time that is a third time before the first PUCCH, that is, the time interval from the predefined time to the first PUCCH is the third time. The third time may be configured by higher layer signaling and / or reported by a UE capability and / or specified by protocols.

[0290] Optionally, the reference signal associated with the activated TCI state may be the reference signal corresponding to the activated TCI state. Optionally, the reference signal associated with the activated TCI state may be at least one of the following: mode #3) SSB quasi-co-located with the QCL reference signal of the activated TCI state; mode #4) QCL reference signal of the activated TCI state. Optionally, a TCI state may be associated / include / correspond to one or two QCL reference signals. Optionally, if a TCI state is associated with / includes / corresponds to two QCL reference signals, the reference signal associated with the TCI state is a QCL type D reference signal among the two QCL reference signals.

[0291] Optionally, the reference signal resource associated with the activated TCI state may be determined based on mode #3 or mode #4. Optionally, mode #3 or mode #4 may be indicated by the base station. For example, a parameter included in the CSI report configuration indicates mode #3 or mode #4. Optionally, the reference signal resource associated with the activated TCI state may be determined based on the reference signal resources associated with the CSI report configuration. Optionally, the reference signal resource associated with the activated TCI state may be determined based on the type of the reference signal resources associated with the CSI report configuration. Optionally, if the resources in the resource set are SSB resources, the reference signal associated with the activated TCI state is determined based on mode #3. If the resources in the resource set are CSI-RS resources (e.g., reference signal resources with the parameter repetition), the reference signal associated with the activated TCI state is determined based on mode #4.

[0292] Optionally, the types of the reference signals associated with the activated TCI state are the same. For example, the types of the reference signals associated with one or more TCI states activated by MAC-CE signaling are the same. Optionally, the type of the reference signal associated with the activated TCI state is the same as the type of the reference resources included in the resource set.

[0293] Optionally, the reference signal associated with the activated TCI state and the reference resource included in the resource set may be SSB. Optionally, in case that the reference signal associated with the activated TCI state and / or the reference signal in the resource set is SSB, the PCI of the SSB associated with the activated TCI state is the same as the PCI of the SSB in the resource set. This method allows the UE to compare measurements for SSBs from a same physical cell in order for the UE to initiate CSI reporting for that physical cell.

[0294] In some cases, the UE may be configured with one or more serving cells, with different activated TCI states on different serving cells. It needs to be clarified which activated TCI state is used for event detection. The following method can prevent the UE from using the incorrect activated TCI state to initiate CSI, thereby improving the reliability of the communication system. Optionally, the activated TCI state is an activated TCI state associated with a specific serving cell, or the activated TCI state is an activated TCI state associated with a specific BWP in a specific serving cell. For example, the activated TCI state for initiating CSI (or, for reporting CSI, or for event determination, or event association) may be the activated TCI state associated with a specific serving cell, or the activated TCI state associated with a specific BWP in a specific serving cell. Optionally, the specific serving cell is indicated by the base station, or the specific serving cell is predefined. For example, the specific serving cell is indicated by a parameter (e.g., carrier) in the CSI report configuration. For example, when the CSI report configuration includes the parameter (e.g., carrier), the specific serving cell is indicated by the parameter. For example, when the CSI report configuration does not include the parameter (e.g., carrier), the specific serving cell is a serving cell where the CSI report configuration is located. For example, the specific serving cell is a serving cell where the resources in the resource set are located. The method of determining the serving cell where the resources in the resource set are located may refer the above description. Optionally, the specific BWP may be indicated by the base station, or the specific BWP may be a predefined BWP. For example, the specific BWP is indicated by a parameter in the CSI report configuration. For example, when the CSI report configuration includes the parameter, the specific BWP is indicated by the parameter. For example, when the CSI report configuration does not include this parameter, the specific BWP is a predefined BWP. Optionally, the parameter used to indicate the specific BWP is the same as or different from the parameter used to indicate the specific serving cell. For example, the ID of the specific serving cell and the ID of the specific BWP may be indicated by the parameter ServingCellAndBWP-Id. This parameter may be used to indicate the serving cell ID and BWP ID. Here, the BWP may be a downlink BWP. The predefined BWP may be the active BWP, or initial BWP, or default BWP, or BWP with smallest ID, or BWP with largest ID.

[0295] In the disclosure, the activated TCI state associated with a specific serving cell refers to the activated TCI state on the specific serving cell, or the activated TCI state applied / used on the specific serving cell. In the disclosure, the activated TCI state associated with a specific BWP refers to the activated TCI state on the specific BWP, or the activated TCI state applied / used on the specific BWP.

[0296] Optionally, the activated TCI state refers to the latest activated TCI state before the first PUCCH. For example, at least one activated TCI state (or each activated TCI state) of A activated TCI states is the latest activated TCI state before the first PUCCH. Optionally, the activated TCI state refers to the latest activated TCI state before the reference resource associated with the first PUCCH. For example, at least one (or each) of the A activated TCI states is the latest activated TCI state before the reference resource associated with the first PUCCH. Optionally, the activated TCI state refers to the latest activated TCI state before the second uplink channel. For example, at least one activated TCI state (or each activated TCI state) of the A activated TCI states is the latest activated TCI state before the second uplink channel. Optionally, the activated TCI state refers to the latest activated TCI state before the CSI carried by the second uplink channel reports the corresponding CSI reference resource. For example, at least one activated TCI state (or each activated TCI state) among the A activated TCI states is the latest activated TCI state before the CSI reference resource corresponding to the second uplink channel. Because the activated TCI state is time-varying, the method can clarify which activated TCI state may be used for the initiation of CSI or for the event determination, thereby preventing the UE from using the incorrect activated TCI state to initiate CSI or determine events, which can improve the reliability of the UE.

[0297] Optionally, the first PUCCH may be triggered based on a comparison of the L1-RSRP of the reference signal resource associated with the indicated TCI state and the first threshold. Optionally, the first PUCCH may be triggered based on a comparison of a difference between the L1-RSRP of the reference signal resource associated with the indicated TCI state and the L1-RSRP of the resource in the resource set and the configured second threshold. Optionally, the first PUCCH may be triggered based on a comparison of a difference between the L1-RSRP of the reference signal resource associated with the activated TCI state and the L1-RSRP of the resource in the resource set and the configured third threshold. The reference signal associated with the activated TCI state may be the reference signal with the Q-th highest L1-RSRP among the reference signals associated with the activated TCI state, Q ≥ 1. Here, the activated TCI state may be one or more activated TCI states, where each activated TCI state is associated with a reference signal. Or, the second threshold and the third threshold may be indicated by the same parameter. Or, the L1-RSRP may be a measured L1-RSRP.

[0298] In the disclosure, A TCI states may be activated for the UE, where A ≥ 1. For example, A TCI states may be activated by MAC-CE for the UE. The number of activated TCI states may be expressed as A.

[0299] Because the number of activated TCI states is determined based on the indication of MAC-CE and the value of Q is configured, in some cases the number of activated TCI states may be less than the configured value of Q. In these cases, the behavior of the UE is unclear, causing the corresponding events to be erroneously detected. The method proposed below can prevent events from being erroneously detected, thereby improving the reliability of the communication system.

[0300] Optionally, Q (e.g., Q indicated by the base station) is less than or equal to the number of activated TCI states. Optionally, the number of activated TCI states is greater than or equal to Q (e.g., Q indicated by the base station). This method can avoid the situation where events cannot be detected due to the number of activated TCI states being less than Q, thereby improving the reliability of the communication system. Optionally, Q is determined based on an indication from the base station and the number of activated TCI states. Optionally, Q is equal to the smaller one of the value indicated by the base station (e.g., the value indicated by valueOfQ-r19) and the number of activated TCI states. Optionally, Q is equal to the number of activated TCI states when the number of activated TCI states is less than or equal to the value indicated by the base station (e.g., the value indicated by valueOfQ-r19). Optionally, Q is equal to a predefined value when the number of activated TCI states is less than or equal to the value indicated by the base station (e.g., the value indicated by valueOfQ-r19). Optionally, the predefined value may be one of 1, 2, 3, 4, 5, 6, 7, or 8. Optionally, when the number of activated TCI states is greater than or equal to the value indicated by the base station (e.g., the value indicated by valueOfQ-r19), Q is equal to the value indicated by the base station. This method can avoid the situation where events cannot be detected due to the number of activated TCI states being less than the Q value indicated by the base station, thereby improving the reliability of the communication system.

[0301] Optionally, the UE may determine whether to evaluate events based on the number of activated TCI states and / or the value of Q indicated by the base station. The event evaluation may be for determining event instances. The determination of event instances may refer to the following description. Optionally, when the number of activated TCI states is greater than or equal to the value of Q indicated by the base station, the UE evaluates events (or, the UE evaluates the indicated event(s)). Optionally, when the number of activated TCI states is less than or equal to the value of Q indicated by the base station, the UE does not evaluate events (or the UE does not evaluate the indicated event(s)). This method can stop the evaluation of events when the number of activated TCI states is less than or equal to the value of Q indicated by the base station, thereby saving the power consumption of the UE.

[0302] In the disclosure, the term "number of TCI states" may be used interchangeably with the term "number of reference signals associated with TCI states".

[0303] In a time window, when the number of event instances is greater than or equal to C, the UE may transmit a first uplink channel. Optionally, the length of the time window is indicated by the base station. For example, the length of the time window is indicated by a parameter in the CSI report configuration (e.g., eventDetectionTimeWindowLength-r19).

[0304] The UE may determine / evaluate an event (or event instance). The UE may count the event instance. The periodicity at which an event instance is determined / counted / evaluated may be based on / equal to the periodicity of the reference signal associated with the event. The method of determining the reference signal associated with an event is described above. The periodicity at which an event instance is determined / counted / evaluated may be based on / equal to the maximum periodicity (or the minimum periodicity) of the periodicities of the reference signals associated with the event.

[0305] Optionally, one or more evaluation periods may be included in a time window. Optionally, one or more evaluation periods in a time window may be determined based on the periodicity at which the event instance is determined / counted / evaluated. When an event is determined within an evaluation period (e.g., the corresponding condition is satisfied within the evaluation period), the event is counted once in the evaluation period. For example, the corresponding counter is incremented by one.

[0306] In the disclosure, an event being determined may be considered as: the condition of the event is satisfied, or the definition of the event is satisfied. Optionally, the determination of the event may be determined based on the evaluation of the event (or the condition associated with the event instance). In the disclosure, the event instance being determined may be considered as: the condition corresponding to the event instance is satisfied, or the definition corresponding to the event instance is satisfied. Optionally, the determination of the event instance may be determined based on the evaluation of the event instance (or the condition associated with the event instance).

[0307] 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.

[0308] In the patent document, 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.

[0309] 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 through the reception of MAC-CE signaling. Optionally, the activated TCI state is from the configured TCI state(s), or the activated TCI state is at least one of the configured TCI state(s), or the activated TCI state is 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 is at least one of the activated TCI states.

[0310] Optionally, Optionally, the UE may receive RRC that may indicate / include configuration information for configuring TCI state(s). Optionally, the UE may receive the configuration information for configuring TCI state(s). For example, the configuration information for configuring TCI state(s) is dl-OrJointTCI-StateList. Optionally, the configuration information for configuring TCI state(s) may be in a higher layer parameter (e.g., PDSCH-Config). Optionally, the configuration information for configuring TCI state(s) indicates / configures M TCI states. Optionally, M≥1 and / or M≤128. When M = 1, the indicated TCI state refers to the TCI state configured by the higher layer parameter related to TCI state. Optionally, the UE applies the indicated TCI after receiving the configuration information for configuring TCI state(s).

[0311] Optionally, the UE may receive PDCCH configuration information for configuring a PDCCH. Optionally, the PDCCH configuration information may be used to monitor DCI, where the DCI may include a field indicating a TCI state. The field may be called a TCI field. The size of the TCI field may be predefined or indicated by the base station. For example, the size of the TCI field is 1 bit, 2 bits, or 3 bits. The TCI field may correspond to several codepoints, which may be called TCI codepoints. Or, the indicated TCI state may be indicated by the TCI field. For example, the UE may obtain the codepoint corresponding to the value of the TCI field in the DCI by detecting the DCI. The UE may determine the indicated TCI state according to the TCI state corresponding to the codepoint.

[0312] The mapping between TCI codepoints and one or more configured TCI states (e.g., M TCI states) may be indicated by a MAC-CE. Optionally, the UE may receive the MAC-CE from the base station. Optionally, the MAC-CE may activate / indicate one or more TCI states, or the MAC-CE may activate / indicate one or more pairs of TCI states. Optionally, the MAC-CE may be used to map one or more TCI codepoints to TCI states. The TCI state indicated / activated by the MAC-CE may be called an activated TCI state. Optionally, the activated TCI state is at least one of the configured M TCI states. If the MAC-CE only maps TCI state(s) to one TCI codepoint, the UE applies the TCI state(s) corresponding to the codepoint. If the MAC-CE only maps the TCI state(s) to one TCI codepoint, the TCI state(s) corresponding to the codepoint is the indicated TCI state(s).

[0313] Optionally, one codepoint may be mapped to one TCI state. For example, one codepoint may be mapped to one joint TCI state. Optionally, the joint TCI state may be DL TCI state for DL channel / signal and UL TCI state for UL channel / signal. Optionally, one codepoint may be mapped to one pair of TCI states. A pair of TCI states may include a downlink TCI state and an uplink TCI state. Optionally, the DL TCI state is for DL channel / signal. Optionally, the UL TCI state is for UL channel / signal.

[0314] The UE may obtain the indicated TCI state through the above methods. The UE may obtain one indicated TCI state. The UE may use / apply the indicated TCI state to receive a downlink channel / downlink signal and / or transmit an uplink channel / uplink signal. The UE may use / apply the indicated first TCI state and / or the indicated second TCI state to receive a downlink channel / downlink signal, and / or transmit an uplink channel / uplink signal.

[0315] Herein, the UE applies the indicated TCI state carried by DCI when at least one of the following conditions is satisfied: 1) the UE is configured with the dl-OrJointTCI-StateList parameter; 2) the UE would transmit HARQ-ACK information corresponding to the DCI (optionally, the HARQ-ACK information is HARQ-ACK; optionally, the HARQ-ACK information is carried by PUSCH or PUCCH; optionally, the DCI is without DL assignment, or the DCI schedules one or more PDSCHs); 3) the indicated TCI State is / are different from the previously indicated one(s). Optionally, the indicated TCI state is applied after the DCI. Optionally, the indicated TCI state is applied starting from the first slot that is at leastbeamAppTimesymbols after the last symbol of the UL channel carrying the HARQ-ACK information. Here,beamAppTimeis a parameter that defines the minimum delay, in symbols, from the end of PUCCH or PUSCH transmission to the application of the new TCI state. This parameter ensures that there is sufficient time to process and prepare the new transmission before applying the new TCI state. Optionally,beamAppTimemay be predefined or indicated by the base station. The value ofbeamAppTimemay be one of 1, 2, 3, 4, 14, 28, 42, 56, 70, 84, 98, 112, 224, or 336.

[0316] In the disclosure, the indicated TCI state may be applied to one serving cell or multiple serving cells. The indicated TCI state may be applied to one or more BWPs in a serving cell.

[0317] In the disclosure, the activated TCI state may be applied to one serving cell or multiple serving cells. The activated TCI state may be applied to one or more BWPs in a serving cell.

[0318] The reference signal resources associated with the indicated TCI state are discussed below. The determination of the indicated TCI state may refer to the above description.

[0319] Optionally, the reference signal associated with the indicated TCI state may be a reference signal corresponding to the indicated TCI state. Optionally, the reference signal associated with the indicated TCI state may be at least one of the following: #1) SSB quasi-co-located (QCLed) with the QCL reference signal of the indicated TCI state; #2) QCL reference signal of the indicated TCI state. Optionally, a TCI state may be associated / include / correspond to one or two QCL reference signals. Optionally, if a TCI state is associated with / includes / corresponds to two QCL reference signals, the reference signal associated with the indicated TCI state is the corresponding QCL type D reference signal among the two QCL reference signals.

[0320] Optionally, the reference signal resources associated with the indicated TCI state may be determined based on mode #1 or mode #2. Optionally, mode #1 or mode #2 may be indicated by the base station. For example, a parameter included in the CSI report configuration indicates mode #1 or mode #2. Optionally, the reference signal resources associated with the indicated TCI state may be determined based on the reference signal resources associated with the CSI report configuration. Optionally, the reference signal resources associated with the indicated TCI state may be determined based on the type of reference signal resources associated with the CSI report configuration. Optionally, if the resources in the resource set are SSB resources, the reference signal associated with the indicated TCI state is determined based on mode #1. If the resources in the resource set are CSI-RS resources (e.g., reference signal resources with the parameter repetition), the reference signal associated with the indicated TCI state is determined based on mode #2.

[0321] Optionally, the type of the reference signal associated with the indicated TCI state is the same as the type of the reference resources included in the resource set.

[0322] Or, the reference signal associated with the indicated TCI state and the reference resources included in the resource set may be SSB. Optionally, in case that the reference signal associated with the indicated TCI state and / or the reference signal in the resource set is SSB, the PCI of the SSB associated with the indicated TCI state is the same as the PCI of the SSB in the resource set. This method allows the UE to compare measurements for SSBs from a same physical cell in order for the UE to initiate CSI reporting for the physical cell.

[0323] In some cases, the UE may be configured with one or more serving cells / BWPs, with different indicated TCI states on different serving cells / BWPs. It needs to be clarified which indicated TCI state is used for event detection. The following method can prevent the UE from initiating CSI using the incorrect indicated TCI state, thereby improving the reliability of the communication system. Optionally, the indicated TCI state is an indicated TCI state associated with a specific serving cell, or the indicated TCI state is an indicated TCI state associated with a specific BWP in a specific serving cell. For example, the indicated TCI state for initiating CSI (or, for reporting CSI, or, for event determination, or, event association) may be the indicated TCI state associated with a specific serving cell, or the indicated TCI state associated with a specific BWP in a specific serving cell. Optionally, the specific serving cell is indicated by the base station, or the specific serving cell is predefined. For example, the specific serving cell is indicated by a parameter (e.g., carrier) in the CSI report configuration. For example, when the CSI report configuration includes the parameter (e.g., carrier), the specific serving cell is indicated by the parameter. For example, when the CSI report configuration does not include the parameter (e.g., carrier), the specific serving cell is a serving cell where the CSI report configuration is located. For example, the specific serving cell is a serving cell where the resources in the resource set are located. The method of determining the serving cell where the resources in the resource set are located may refer to the above description. Optionally, the specific BWP may be indicated by the base station, or the specific BWP may be a predefined BWP. For example, the specific BWP is indicated by a parameter in the CSI report configuration. For example, when the CSI report configuration includes the parameter, the specific BWP is indicated by the parameter. For example, when the CSI report configuration does not include the parameter, the specific BWP is a predefined BWP. Optionally, the parameter used to indicate the specific BWP is the same as or different from the parameter used to indicate the specific serving cell. For example, the ID of the specific serving cell and the ID of the specific BWP may be indicated by the parameter ServingCellAndBWP-Id. Here, the BWP may be a downlink BWP. The predefined BWP may be an active BWP, or initial BWP, or default BWP, or BWP with the smallest ID, or BWP with the largest ID.

[0324] In the disclosure, the indicated TCI state associated with a specific serving cell refers to the indicated TCI state applied / used on the specific serving cell. In the disclosure, the indicated TCI state associated with a specific BWP refers to the indicated TCI state applied / used on the specific BWP.

[0325] The reference signal resource associated with the activated TCI state is discussed below. The determination of the activated TCI state may refer to the above description.

[0326] Optionally, the reference signal associated with the activated TCI state may be the reference signal corresponding to the activated TCI state. Optionally, the reference signal associated with the activated TCI state may be at least one of the following: #3) SSB quasi-co-located with the QCL reference signal of the activated TCI state; #4) QCL reference signal of the activated TCI state. Optionally, a TCI state may be associated / include / correspond to one or two QCL reference signals. Optionally, if a TCI state is associated with / includes / corresponds to two QCL reference signals, the reference signal associated with the indicated TCI state is the corresponding QCL type D reference signal among the two QCL reference signals.

[0327] Optionally, the reference signal resource associated with the activated TCI state may be determined based on mode #3 or mode #4. Optionally, mode #3 or mode #4 may be indicated by the base station. For example, a parameter included in the CSI report configuration indicates mode #3 or mode #4. Optionally, the reference signal resource associated with the activated TCI state may be determined based on the reference signal resources associated with the CSI report configuration. Optionally, the reference signal resource associated with the activated TCI state may be determined based on the type of the reference signal resources associated with the CSI report configuration. Optionally, if the resources in the resource set are SSB resources, the reference signal associated with the indicated TCI state is determined based on mode #3. If the resources in the resource set are CSI-RS resources (e.g., reference signal resources with the parameter repetition), the reference signal associated with the indicated TCI state is determined based on mode #4.

[0328] Optionally, the types of the reference signals associated with the activated TCI state are the same. For example, the types of the reference signals associated with one or more TCI states activated by MAC-CE signaling are the same. Optionally, the type of the reference signal associated with the activated TCI state is the same as the type of the reference resources included in the resource set.

[0329] Optionally, the reference signal associated with the activated TCI state and the reference resource included in the resource set may be SSB. Optionally, in case that the reference signal associated with the activated TCI state and / or the reference signal in the resource set is SSB, the PCI of the SSB associated with the activated TCI state is the same as the PCI of the SSB in the resource set. This method allows the UE to compare measurements for SSBs from a same physical cell in order for the UE to initiate CSI reporting for that physical cell.

[0330] In some cases, the UE may be configured with one or more serving cells, with different activated TCI states on different serving cells. It needs to be clarified which activated TCI state is used for event detection. The following method can prevent the UE from using the incorrect activated TCI state to initiate CSI, thereby improving the reliability of the communication system. Optionally, the activated TCI state is an activated TCI state associated with a specific serving cell, or the activated TCI state is an activated TCI state associated with a specific BWP in a specific serving cell. For example, the activated TCI state for initiating CSI (or, for reporting CSI, or for event determination, or event association) may be the activated TCI state associated with a specific serving cell, or the activated TCI state associated with a specific BWP in a specific serving cell. Optionally, the specific serving cell is indicated by the base station, or the specific serving cell is predefined. For example, the specific serving cell is indicated by a parameter (e.g., carrier) in the CSI report configuration. For example, when the CSI report configuration includes the parameter (e.g., carrier), the specific serving cell is indicated by the parameter. For example, when the CSI report configuration does not include the parameter (e.g., carrier), the specific serving cell is a serving cell where the CSI report configuration is located. For example, the specific serving cell is a serving cell where the resources in the resource set are located. The method of determining the serving cell where the resources in the resource set are located may refer the above description. Optionally, the specific BWP may be indicated by the base station, or the specific BWP may be a predefined BWP. For example, the specific BWP is indicated by a parameter in the CSI report configuration. For example, when the CSI report configuration includes the parameter, the specific BWP is indicated by the parameter. For example, when the CSI report configuration does not include this parameter, the specific BWP is a predefined BWP. Optionally, the parameter used to indicate the specific BWP is the same as or different from the parameter used to indicate the specific serving cell. For example, the ID of the specific serving cell and the ID of the specific BWP may be indicated by the parameter ServingCellAndBWP-Id. Here, the BWP may be a downlink BWP. The predefined BWP may be the active BWP, or initial BWP, or default BWP, or BWP with smallest ID, or BWP with largest ID.

[0331] Referring back to FIG. 7, in some implementations, the first information in operation S710 may include fifth information, where the fifth information may include at least one of the following information:

[0332] - Information of one or more first RSs. The first RSs may be RSs corresponding to (or associated with) possible (or candidate) indicated TCI states. For example, the information of the first RSs may include CSI-ResourceConfig, which may define a group of one or more Non-Zero-Power (NZP)-CSI-RS resource set (e.g., NZP-CSI-RS-ResourceSet), CSI-Interference Measurement (IM)-resource set (e.g., CSI-IM-ResourceSet) and / or CSI-SSB-resource set (e.g., CSI-SSB-Resourceset).

[0333] - Information of one or more first TCI states, which may be information of possible (or candidate) indicated TCI states.

[0334] For example, the information of the RSs may be information of RS resources, which may include, for example, at least one of the following:

[0335] - ID of the RS resources, e.g., which may be configured by parameter NZP-CSI-RS-ResourceId and / or parameter SSB-Index

[0336] - BWP of the RS resources, for example, which may be configured by parameter BWP-Id

[0337] - The serving cell of the RS resources, for example, which may be configured by parameter ServCellIndex

[0338] - Serving cell list (or serving cell set) information, for example, the serving cell list (or serving cell set) associated with the RS resources, which may be parameter simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3, or simultaneousU-TCI-UpdateList4.

[0339] It should be noted that the "BWP of the RS resources" and "BWP where the RS resources are located" may be used interchangeably, and the "serving cell of the RS resources" and "serving cell where the RS resources are located" may be used interchangeably.

[0340] For example, the information of the TCI states may include at least one of the following:

[0341] - ID of the TCI states, e.g., which may be configured by parameter TCI-StateId

[0342] - BWP of the TCI states, e.g., which may be configured by parameter BWP-Id

[0343] - The serving cell of the TCI states, for example, which may be configured by parameter ServCellIndex

[0344] - Serving cell list (or serving cell set) information associated with the TCI states, which may be, for example, one of parameters simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3 or simultaneousU-TCI-UpdateList4.

[0345] In some implementations, the resource of the current beam for the CSI report configuration may be determined based on the configured serving cell list (or serving cell set) information. For example, the resource of the current beam may be the RS resource corresponding to the indicated TCI state applied to the serving cells included in the configured serving cell list (or serving cell set) information. Optionally, the UE may be configured with Type 1 event and / or Type 2 event. In this way, when multiple serving cells are configured, the serving cell of the resource of the current beam can be clarified, thereby clarifying the behavior of the UE and improving the reliability of CSI reporting.

[0346] In some implementations, the resource of the current beam for the CSI report configuration may be determined based on the serving cell of the CSI report configuration (e.g., the serving cell where the CSI report configuration is located), for example, where the CSI report configuration does not have the configured serving cell list (or serving cell set) information. For example, the resource of the current beam may be a RS resource corresponding to the TCI state of the serving cell applied to the CSI report configuration. Optionally, the UE may be configured with Type 1 event and / or Type 2 event. In this way, when multiple serving cells are configured, the serving cell of the resource of the current beam can be clarified, thereby clarifying the behavior of the UE and improving the reliability of CSI reporting.

[0347] In some implementations, the resource of the current beam for the CSI report configuration may be determined based on the serving cell index configured in the CSI report configuration (e.g., the serving cell index indicated by parameter 'carrier'). For example, the resource of the current beam may be a RS resource corresponding to the TCI state applied to the serving cell configured in the CSI report configuration. Optionally, the UE may be configured with Type 1 event and / or Type 2 event. In this way, when multiple serving cells are configured, the serving cell of the resource of the current beam can be clarified, thereby clarifying the behavior of the UE and improving the reliability of CSI reporting.

[0348] In some implementations, the RS resources for the CSI report configuration (e.g., RS resources for measurement) may be determined based on the configured serving cell list (or serving cell set) information. For example, the RS resources may be RS resources corresponding to the activated TCI state applied to the serving cell included in the configured serving cell list (or serving cell set) information. Optionally, the UE may be configured with Type 3 event. In this way, when multiple serving cells are configured, the serving cell of the resource of the current beam can be clarified, thereby clarifying the behavior of the UE and improving the reliability of CSI reporting.

[0349] In some implementations, it may be specified by protocols that the configured TCI state list is the same for all serving cells in a serving cell list (or serving cell set). For example, one serving cell in a serving cell list (or serving cell set) is configured with an explicit list (e.g., explicitlist), which may include parameter dl-OrJointTCI-StateToAddModList. Other serving cells in the serving cell list (or serving cell set) may be configured with a parameter indicating a reference TCI state, for example, parameter unifiedTCI-StateRef. The reference TCI state may indicate the ID of the one serving cell and the ID of a BWP. This can simplify the UE implementation complexity.

[0350] In some implementations, it may be specified by protocols that the configured TCI state list is the same for all BWPs (for example, downlink BWPs; for another example, PDSCH configurations) on all serving cells in a serving cell list (or serving cell set). For example, a BWP (for example, downlink BWP; for another example, PDSCH configuration) of a serving cell in a serving cell list (or serving cell set) is configured with an explicit list (e.g., explicitlist), which may include parameter dl-OrJointTCI-StateToAddModList. All BWPs of other serving cells in the serving cell list (or serving cell set) or other BWPs of the serving cell may be configured with a parameter indicating a reference TCI state, for example, parameter unifiedTCI-StateRef. The reference TCI state may indicate the ID of the serving cell and the ID of the BWP. This can simplify UE implementation complexity.

[0351] In some implementations, the UE may be configured by the network with a set of resources of the current beam (e.g., parameter currentBeamResourceSet), where each element in the set corresponds to a resource of the current beam, or the UE may be configured by the network with one or more resources of the current beam (e.g., parameter resourceOfCurrentBeam). For example, the set of resources of the current beam (e.g., parameter currentBeamResourceSet) or the one or more resources of the current beam (e.g., parameter resourceOfCurrentBeam) may be configured in the CSI report configuration. Optionally, for the resource of the current beam (e.g., each resource of the current beam), the UE may be configured by the network with serving cell information (e.g., serving cell ID) corresponding to the resource. If the UE is not configured with the corresponding serving cell information by the network for a resource of the current beam, the serving cell where the resource of the current beam is located may be the serving cell where the CSI report is configured. Or, the resource of the current beam may be the RS resource corresponding to the TCI state applied to the serving cell where the CSI report configuration is located. Optionally, for the resource of the current beam (e.g., each resource of the current beam), the UE may be configured by the network with BWP information (e.g., BWP ID) corresponding to the resource. Optionally, for the resource of the current beam (e.g., each resource of the current beam), the UE may be configured by the network with the corresponding serving cell information (e.g., serving cell ID) and BWP information (e.g., BWP ID). Optionally, the BWP information may be configured only for NZP-CSI-RS resources, and the CSI-SSB resources on a serving cell may be considered common (i.e., the same) for all BWPs on the serving cell, and thus there is no need to configure BWP information. It should be noted that the current beam may be understood as a transmit beam being used by the base station, that is, SSB QCL'ed with CSI-RS corresponding to (or associated with, or in) the indicated TCI state (e.g., of QCL-TypeD).

[0352] According to some example embodiments of the disclosure, whether to measure (e.g., on the configured or associated RS resources) for the CSI report configuration and / or whether to transmit the first PUCCH may be determined based on whether the serving cell (and / or BWP) where the RS or RS resources are located is included in the configured serving cells (and / or BWPs) (e.g., in the CSI report configuration) or serving cells in the serving cell list (or serving cell set) (for example, whether the serving cell (and / or BWP) where the RS or RS resources is located belongs to the configured serving cell (and / or BWP) set or is a serving cell (and / or BWP) in the configured serving cell (and / or BWP) set or is one of the configured one or more serving cells (and / or BWPs)). This procedure may be applied to each of one or more RSs or RS resources.

[0353] In some implementations, for a CSI report configuration, if the serving cell where the RS or RS resources are located is included in the serving cells in the CSI report configuration or the serving cells in the serving cell list (or serving cell set), the UE may transmit the first PUCCH. For example, for a CSI report configuration, if a serving cell in the serving cells in the CSI report configuration or the serving cell list (or serving cell set) is the serving cell where the RS or RS resources are located (for example, if a serving cell in the serving cells in the CSI report configuration or the serving cells in the serving cell list (or serving cell set) is the same as or matches the serving cell where the RS or RS resources are located), the UE may measure (e.g., on the configured or associated RS resources) for the CSI report configuration and / or transmit the first PUCCH.

[0354] In some implementations, for a CSI report configuration, if the serving cell where the RS or RS resources are located is not included in the serving cells in the CSI report configuration or the serving cells in the serving cell list (or serving cell set), the UE may not measure (e.g., on the configured or associated RS resources) for the CSI report configuration, and / or the UE may not transmit the first PUCCH. For example, for a CSI report configuration, if none of the serving cells in the CSI report configuration is the serving cell where the RS or RS resources are located (for example, if none of the serving cells in the CSI report configuration or the serving cells in the serving cell list (or serving cell set) is the same as or matches the serving cell where the RS or RS resources are located), the UE may not measure (e.g., on the configured or associated RS resources) for the CSI report configuration and / or may not transmit the first PUCCH.

[0355] In some implementations, for a CSI report configuration, if the BWP where the RS or RS resources are located is included in the BWPs in the CSI report configuration, the UE may measure (e.g., on the configured or associated RS resources) for the CSI report configuration, and / or the UE may transmit the first PUCCH. For example, for a CSI report configuration, if one of the BWPs in the CSI report configuration is the BWP where the RS or RS resources are located (for example, if one of the BWPs in the CSI report configuration is the same as or matches the BWP where the RS or RS resources are located), the UE may measure (e.g., on the configured or associated RS resources) for the CSI report configuration and / or transmit the first PUCCH.

[0356] In some implementations, for a CSI report configuration, if the BWP where the RS or RS resources are located is not included in the BWPs in the CSI report configuration, the UE may not measure (e.g., on the configured or associated RS resources) for the CSI report configuration, and / or the UE may transmit the first PUCCH. For example, for a CSI report configuration, if none of the BWPs in the CSI report configuration is the BWP where the RS or RS resources are located (for example, if none of the BWPs in the CSI report configuration is the same as or matches the BWP where the RS or RS resources are located), the UE may not measure (e.g., on the configured or associated RS resources) for the CSI report configuration, and / or the UE may not transmit the first PUCCH.

[0357] It should be noted that "the serving cell where the RS or RS resources are located" may be replaced with "the serving cell in which the indicated TCI state is applied" or "the serving cell associated with the indicated TCI state".

[0358] According to some example embodiments of the disclosure, whether to measure (e.g., on the configured or associated RS resources) for the CSI report configuration and / or whether to transmit the first PUCCH may be determined based on whether the RS resource corresponding to (or associated with) the indicated TCI state (e.g., the indicated TCI state to be applied by the UE) is included in the configured resources (e.g., in the CSI report configuration) of the current beam (for example, the RS resource corresponding to (or associated with) the indicated TCI state belongs to the configured resource set of the current beam, or is a resource in the configured resource set of the current beam, or is one of the configured one or more resources of the current beam). Or, whether to measure (e.g., on the configured or associated RS resources) for the CSI report configuration and / or whether to transmit the first PUCCH is determined based on whether the indicated TCI state (e.g., the indicated TCI state to be applied by the UE) is included in the configured one or more TCI states (e.g., in the CSI report configuration). As used in the example embodiments of the disclosure, the configured resources (e.g., in the CSI report configuration) of the current beam may also be referred to as the configured resources (which may be referred to as first RS resources for convenience of description) (e.g., in the CSI report configuration) of the RS (which may be referred to as first RS for convenience of description).

[0359] In some implementations, for a CSI report configuration, if the RS resource corresponding to (or associated with) the indicated TCI state is included in the resources of the first RS in the CSI report configuration, the UE may transmit the first PUCCH. For example, for a CSI report configuration, if one of the resources of the first RS in the CSI report configuration is the RS resource corresponding to (or associated with) the indicated TCI state (for example, if one of the resources of the first RS in the CSI report configuration is the same as or matches the RS resource corresponding to (or associated with) the indicated TCI state), the UE may measure (e.g., on the configured or associated RS resources) for the CSI report configuration, and / or the UE may transmit the first PUCCH. In some implementations, for a CSI report configuration, if the indicated TCI state is included in the first TCI states in the CSI report configuration, the UE may measure (e.g., on the configured or associated RS resources) for the CSI report configuration, and / or the UE may transmit the first PUCCH. For example, for a CSI report configuration, if one of the first TCI states in the CSI report configuration is the indicated TCI state (e.g., if one of the first TCI states in the CSI report configuration TCI state is the same as or matches the indicated TCI state), the UE may measure (e.g., on the configured or associated RS resources) for the CSI report configuration, and / or the UE may transmit the first PUCCH.

[0360] It should be noted that the operation that the UE transmits the first PUCCH may also need to satisfy other conditions for transmission of the first PUCCH. For example, the UE may measure (e.g., on the configured or associated RS resources) for the CSI report configuration, and if the condition of a specific event is satisfied, the UE may transmit the first PUCCH.

[0361] In some implementations, for a CSI report configuration, if the RS resource corresponding to (or associated with) the indicated TCI state is not included in the resources of the first RS in the CSI report configuration, the UE may not measure (e.g., on the configured or associated RS resources) for the CSI report configuration, and / or the UE may not transmit the CSI report corresponding to the CSI report configuration. For example, for a CSI report configuration, if none of the resources of the first RS in the CSI report configuration is the RS resource corresponding to (or associated with) the indicated TCI state (for example, if the resources of the first RS in the CSI report configuration are all different from or do not match the RS resource corresponding to (or associated with) the indicated TCI state), the UE may not measure the beam associated with the indicated TCI state, and / or may not transmit the CSI report corresponding to the CSI report configuration.

[0362] In some implementations, for a CSI report configuration, if the indicated TCI state is not included in the first TCI states in the CSI report configuration, the UE may not measure (e.g., on the configured or associated RS resources) for the CSI report configuration, and / or the UE may not transmit the first PUCCH. For example, for a CSI report configuration, if none of the first TCI states in the CSI report configuration is the indicated TCI state (e.g., if none of the first TCI states in the CSI report configuration is the same as or matches the indicated TCI state), the UE may not measure (e.g., on the configured or associated RS resources) for the CSI report configuration, and / or the UE may not transmit the first PUCCH.

[0363] In some cases, the UE may be configured with multiple serving cells by the network. For the convenience of description, two serving cells are used as an example for explanation below. It can be understood that this method can also be applicable to a case where the UE is configured with more than two serving cells. The UE may be configured with a first serving cell and a second serving cell, and the resource of the first RS in the CSI report configuration may be in the first serving cell or the second serving cell. In this case, the above description about the RS, "the RS resource corresponding to (or associated with) the indicated TCI state is included in the resources of the first RS in the CSI report configuration" may be understood as "for a same serving cell, the RS resource corresponding to (or associated with) the indicated TCI state is included in the resources of the first RS in the CSI report configuration", that is, the serving cell where the RS resource corresponding to (or associated with) the indicated TCI state is located is the same as the serving cell where the resources of the first RS in the CSI report configuration are located. Similarly, the above description about the TCI state, "the indicated TCI state is not included in the first TCI states in the CSI report configuration" may be understood as "for a same serving cell, the indicated TCI state is included in the first TCI states in the CSI report configuration", that is, the serving cell corresponding to the indicated TCI state is the same as the serving cell corresponding to the first TCI states in the CSI report configuration.

[0364] For a CSI report configuration on a serving cell, if the RS resource corresponding to (or associated with) the indicated TCI state of the serving cell is included in the resources of the first RS in the CSI report configuration, the UE may transmit the first PUCCH. Here, the serving cell where the RS resource corresponding to (or associated with) the indicated TCI state is located is the same as the serving cell where the resources of the first RS in the CSI report configuration are located. When the RS resource is NZP-CSI-RS, the BWP ID of the RS resource corresponding to (or associated with) the indicated TCI state is the same as the BWP ID where the resources of the first RS in the CSI report configuration are located.

[0365] It should be noted that "the indicated TCI state of the serving cell" may be understood as "the indicated TCI state applied to the serving cell". Similarly, "the serving cell corresponding to the indicated TCI state" may be understood as "the serving cell to which the indicated TCI state is applied".

[0366] In the description of the example embodiments of the disclosure, "the resource of the current beam" and "the RS resource corresponding to (or associated with) the indicated TCI state" may be used interchangeably, the terms "current beam" and "indicated TCI state" may be used interchangeably, and the terms "resource", "CSI resource", "CSI-RS resource", "CSI-RS", "NZP CSI-RS", "CSI-SSB" and "RS" may be used interchangeably.

[0367] Referring back to FIG. 7, In some implementations, the first information in operation S710 may include sixth information, which may include a set (or list) of one or more second RS resources, where the second RS may be an RS corresponding to (or associated with) a new (or candidate) beam (or TCI state).

[0368] In some implementations, each set (or list) of second RS resources may be configured with a corresponding first RS. In the embodiments of the disclosure, "measuring (e.g., on the configured or associated RS resources) for the CSI report configuration" may be understood as measuring the second RS in the set (or list) of second RS resources corresponding to the first RS. The information included in the fourth information is information of a second RS in the set (or list) of second RS resources corresponding to the first RS.

[0369] In some implementations, each second RS resource in each set (or list) of second RS resources may be configured with a corresponding first RS. In the embodiment of the disclosure, "measuring (e.g., on the configured or associated RS resources) for the CSI report configuration" may be understood as measuring the second RS resource corresponding to the first RS. The information included in the fourth information is information of the second RS corresponding to the first RS.

[0370] In some examples, for a CSI report configuration, if the RS resource corresponding to (or associated with) the indicated TCI state is included in the resources of the first RS in the CSI report configuration, the UE may measure (e.g., on the configured or associated RS resources) for the CSI report configuration, for example, measure on a second RS in a set (or list) of second RS resources corresponding to the first RS or on a second RS resource corresponding to the first RS, and / or the UE may transmit the first PUCCH.

[0371] In some implementations, an associated CSI report configuration (e.g., CSI report configuration ID) may also be configured for an indicated TCI state or an RS corresponding to (or associated with) an indicated TCI state, and the UE only performs the associated CSI report configuration for the indicated TCI state. Associated CSI report configurations are measured and reported.

[0372] In some implementations, if the RS resource corresponding to (or associated with) the indicated TCI state is included in the resource of the first RS in the CSI report configuration associated with the indicated TCI state, the UE may transmit the first PUCCH, and / or measure and report for the associated CSI report configuration. For example, for a CSI report configuration corresponding to (or associated with) the indicated TCI state, if one of the resources of the first RS in the CSI report configuration corresponds to (or is associated with) the RS resource corresponding to (or associated with) the indicated TCI state (for example, if one of the resources of the first RS in the CSI report configuration is the same as or matches the RS resource corresponding to (or associated with) the indicated TCI state), the UE may transmit the first PUCCH, and / or measure and report for the associated CSI report configuration.

[0373] What the above methods have in common is that the UE may determine an associated subset among all configured CSI report configurations according to the current indicated TCI state or the RS corresponding to (or associated with) the indicated TCI state, and the UE only measure and / or report for CSI report configurations included in the subset.

[0374] According to an example embodiment of the disclosure, it may be restricted that the RS or TCI state of the current beam needs to be explicitly configured in the CSI report configuration (e.g., the RS resource of the current beam is included in or belongs to the RS resources configured in the CSI report configuration). For example, for a beam to be applied, if the RS or RS resources of the beam match the RS resources configured or indicated in the CSI report configuration, the UE may transmit the CSI report of the CSI report configuration. This method may be applicable to a case where the UE only needs to measure on specific beam(s) (e.g., measure on neighboring beams) rather than all possible beams. This method can reduce the UE measurement time, thereby reducing the CSI reporting delay. In addition, this method can also reduce the number of RSs measured by the UE, thereby reducing the UE implementation complexity and reducing the UE energy consumption.

[0375] FIG. 9 illustrates a flowchart of a method 900 performed by a UE according to some embodiments of the disclosure.

[0376] Referring to FIG. 9, in operation S910, the UE receives first information that configures or indicates information of a CSI reporting configuration, where the first information includes information related to a first RS, where the information related to the first RS includes information related to one or more first RS resources.

[0377] Next, in operation S920, in case that a first condition is satisfied, the UE transmits a PUCCH with second information that indicates or requests a CSI report for the CSI report configuration, where the first condition includes that an RS resource corresponding to an indicated TCI state is identical to one of the one or more first RS resources.

[0378] In some implementations, one or more of operations S910 to S920 may be performed based on methods described according to various embodiments of the disclosure.

[0379] In some implementations, method 900 may omit one or more of operations S910 to S920, or may include additional operations, such as operations that may be performed by the UE described according to various embodiments of the disclosure.

[0380] FIG. 10 illustrates a flowchart of a method 1000 performed by a base station according to some embodiments of the disclosure.

[0381] Referring to FIG. 10, in operation S1010, the base station transmits, to a UE, first information that configures or indicates information of a CSI reporting configuration, where the first information includes information related to a first RS, where the information related to the first RS includes information related to one or more first RS resources.

[0382] Next, in operation S1020, the base station receives, from the UE, a PUCCH with second information that indicates or requests a CSI report for the CSI report configuration, where the PUCCH with the second information is transmitted by the UE in case that a first condition is satisfied, where the first condition includes that an RS resource corresponding to an indicated TCI state is identical to one of the one or more first RS resources.

[0383] In some implementations, one or more of operations S1010 to S1020 may be performed based on methods described according to various embodiments of the disclosure.

[0384] In some implementations, the method 1000 may omit one or more of operations S1010 to S1020, or may include additional operations, such as operations that may be performed by a base station described according to various embodiments of the disclosure.

[0385] 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 invention 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.

[0386] 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.

[0387] 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.

[0388] 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.

[0389] 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.

[0390] The above description is only example implementations of the present invention, and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1.A method performed by a user equipment (UE) in a communication system, the method comprising:receiving first information that configures or indicates information of a channel state information (CSI) reporting configuration, wherein the first information includes information related to a first reference signal (RS), wherein the information related to the first RS includes information related to one or more first RS resources; andin case that a first condition is satisfied, transmitting a physical uplink control channel (PUCCH) with second information that indicates or requests a CSI report for the CSI report configuration,wherein the first condition includes that an RS resource corresponding to an indicated transmission configuration indication (TCI) state is identical to one of the one or more first RS resources.2.The method of claim 1, wherein the first condition further includes:for the CSI report configuration on a serving cell, the RS resource corresponding to the indicated TCI state of the serving cell being included in the first RS resource.3.The method of claim 1, wherein a serving cell of the RS resource corresponding to the indicated TCI state is identical to a serving cell of the one of the one or more first RS resources.4.The method of claim 1, wherein a bandwidth part (BWP) of the RS resource corresponding to the indicated TCI state is identical to a BWP of the one of the one or more first RS resources.5.The method of claim 1, wherein a serving cell and a BWP of the RS resource corresponding to the indicated TCI state are identical to a serving cell and a BWP of the one of the one or more first RS resources.6.The method of claim 1, wherein the information related to one or more first RS resources includes at least one of: an identifier (ID) of each of the one or more first RS resources, a BWP of each of the one or more first RS resources, or a serving cell of each of the one or more first RS resources.7.The method of claim 1, wherein the RS resource includes at least one of: a non-zero power (NZP)-channel state information (CSI)-RS resource, a CSI-interference measurement (IM)-resource, or a CSI-synchronization signal block (SSB)-resource.8.The method of claims 1, further comprising:not transmitting the PUCCH with the second information in case that the first condition is not satisfied.9.A method performed by a base station in a communication system, the method comprising:transmitting, to a user equipment (UE), first information that configures or indicates information of a channel state information (CSI) reporting configuration, wherein the first information includes information related to a first reference signal (RS), wherein the information related to the first RS includes information related to one or more first RS resources; andreceiving, from the UE, a PUCCH with second information that indicates or requests a CSI report for the CSI report configuration,wherein the PUCCH with the second information is transmitted by the UE in case that a first condition is satisfied, andwherein the first condition includes that an RS resource corresponding to an indicated transmission configuration indication (TCI) state is identical to one of the one or more first RS resources.10.The method of claim 9, wherein the first condition further includes:for the CSI report configuration on a serving cell, the RS resource corresponding to the indicated TCI state of the serving cell being included in the first RS resource.11.The method of claim 9, wherein a serving cell of the RS resource corresponding to the indicated TCI state is identical to a serving cell of the one of the one or more first RS resources.12.The method of claim 9, wherein a bandwidth part (BWP) of the RS resource corresponding to the indicated TCI state is identical to a BWP of the one of the one or more first RS resources.13.The method of claim 9, wherein a serving cell and a BWP of the RS resource corresponding to the indicated TCI state are identical to a serving cell and a BWP of the one of the one or more first RS resources.14.A user equipment (UE) in a communication system, the UE comprising:a transceiver; andone or more processors coupled with the transceiver and configured to:receive first information that configures or indicates information of a channel state information (CSI) reporting configuration, wherein the first information includes information related to a first reference signal (RS), wherein the information related to the first RS includes information related to one or more first RS resources, andin case that a first condition is satisfied, transmit a physical uplink control channel (PUCCH) with second information that indicates or requests a CSI report for the CSI report configuration,wherein the first condition includes that an RS resource corresponding to an indicated transmission configuration indication (TCI) state is identical to one of the one or more first RS resources.15.A base station in a communication system, the base station comprising:a transceiver; andone or more processors coupled with the transceiver and configured to:transmit, to a user equipment (UE), first information that configures or indicates information of a channel state information (CSI) reporting configuration, wherein the first information includes information related to a first reference signal (RS), wherein the information related to the first RS includes information related to one or more first RS resources, andreceive, from the UE, a PUCCH with second information that indicates or requests a CSI report for the CSI report configuration,wherein the PUCCH with the second information is transmitted by the UE in case that a first condition is satisfied, andwherein the first condition includes that an RS resource corresponding to an indicated transmission configuration indication (TCI) state is identical to one of the one or more first RS resources.

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