Apparatus in a communication system and method performed thereby

Abstract

An apparatus in a communication system and a method performed by the apparatus are provided. The method comprises: receiving first information, the first information being used for configuring or indicating a CSI reporting configuration, the first information comprising second RS related information, the second RS related information comprising one or more second RS resource related information; transmitting a physical uplink channel carrying fourth information, wherein the fourth information comprises index information of at least one second RS resource; receiving a PDCCH, wherein a DCI format carried by the PDCCH comprises a TCI state field indicating a TCI state, the PDCCH is not earlier than the physical uplink channel by a first time, wherein the TCI state is applied after a second time following the PDCCH in a case that a first condition is met, wherein the first condition comprises that a RS resource corresponding to the TCI state is the same as one of the one or more second RS resources.

Description

Technical Field

[0001] This disclosure relates to communication technology, and more specifically, to apparatus in a communication system and methods for performing the same. Background Technology

[0002] To meet the increased demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or near-5G communication systems. Therefore, 5G or near-5G communication systems are also referred to as "super 4G networks" or "post-LTE systems".

[0003] 5G communication systems are implemented in higher frequency (millimeter wave, mmWave) bands (e.g., the 60 GHz band) to achieve higher data rates. To reduce radio wave propagation loss and increase transmission distance, beamforming, massive MIMO (Multiple-Input Multiple-Output), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive MIMO technologies are discussed in 5G communication systems.

[0004] In addition, in 5G communication systems, development is underway to improve the system network based on advanced small cells, radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communication, coordinated multi-points (CoMP), and receiver interference cancellation.

[0005] In 5G systems, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) have been developed as advanced coding modulation (ACM), as well as filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies. Summary of the Invention

[0006] According to some aspects of this disclosure, a method performed by a user equipment (UE) in a communication system is provided. The method includes: receiving first information, the first information being used to configure or indicate a Channel State Information (CSI) report configuration, the first information including information related to a second Reference Signal (RS), the second RS-related information including information related to one or more second RS resources; transmitting a physical uplink channel carrying fourth information, wherein the fourth information includes index information of at least one second RS resource; receiving a physical downlink control channel (PDCCH), wherein the DCI format carried by the PDCCH includes a TCI state field indicating a Transmission Configuration Indication (TCI) state, the PDCCH not earlier than a first time after the physical uplink channel, wherein the TCI state is applied a second time after the PDCCH if a first condition is met, wherein the first condition includes: the RS resource corresponding to the TCI state is the same as one of the one or more second RS resources.

[0007] In conjunction with one or more aspects of the method performed by the UE as described above, for example, when the TCI state is applied a second time after the PDCCH: the TCI state is applied in the first time unit after the second time after the PDCCH.

[0008] In conjunction with one or more aspects of the method performed by the UE as described above, for example, when the TCI state is applied a second time after the PDCCH: the earliest time unit after the second time after the PDCCH is applied.

[0009] In conjunction with one or more aspects of the methods performed by the UE as described above, for example, the time unit is a time slot.

[0010] In conjunction with one or more aspects of the method performed by the UE as described above, for example, the time unit is the time unit of the serving cell where the PDCCH is located.

[0011] In conjunction with one or more aspects of the method performed by the UE as described above, for example, the first information includes first serving cell index information, the first serving cell being the serving cell to which the TCI state is applied.

[0012] In conjunction with one or more aspects of the method performed by the UE described above, for example, the first condition includes that the RS resource corresponding to the TCI state indicated by the TCI state field in the DCI format carried by the PDCCH is the same as one of the one or more second RS resources, and the serving cell indicated by the DCI format is the same as the first serving cell.

[0013] In conjunction with one or more aspects of the method performed by the UE as described above, for example, the first information includes serving cell list information, wherein the serving cells in the serving cell list are the serving cells to which the TCI state is applied.

[0014] In conjunction with one or more aspects of the method performed by the UE described above, for example, the first condition includes that the RS resource corresponding to the TCI state indicated by the TCI state field in the DCI format carried by the PDCCH is the same as one of the one or more second RS resources, and the serving cell indicated by the DCI format is a serving cell in the list of serving cells.

[0015] In conjunction with one or more aspects of the method performed by the UE as described above, for example, the first condition includes: the TCI state switching field in the DCI format carried by the PDCCH indicates confirmation of the switch.

[0016] In conjunction with one or more aspects of the method performed by the UE as described above, for example, the first condition includes: the TCI state handover field in the DCI format carried by the PDCCH indicates confirmation of handover, and the serving cell indicated by the DCI format is the same as the first serving cell.

[0017] In conjunction with one or more aspects of the method performed by the UE as described above, for example, the first condition includes: the TCI state handover field in the DCI format carried by the PDCCH indicates confirmation of handover, and the serving cell indicated by the DCI format is a serving cell in the list of serving cells.

[0018] In conjunction with one or more aspects of the method performed by the UE described above, for example, the information related to the one or more second RS resources includes at least one of the following: an identifier (ID) for each of the one or more second RS resources; a bandwidth portion (BWP) of each second RS resource; and the serving cell of each second RS resource.

[0019] In conjunction with one or more aspects of the method performed by the UE as described above, for example, the RS resource includes at least one of the following: Non-zero power (NZP) - Channel state information (CSI) - RS resource; CSI - Interference measurement (IM) - resource; CSI - Synchronization signal block (SSB) - resource.

[0020] In conjunction with one or more aspects of the method performed by the UE as described above, for example, the first time is based on at least one of the following: time for the base station to decode the fourth information; or time for the base station to schedule the PDCCH.

[0021] In conjunction with one or more aspects of the methods performed by the UE as described above, for example, the first time is reported via higher-layer signaling configuration or via UE capability.

[0022] In conjunction with one or more aspects of the method performed by the UE as described above, for example, the second time is based on at least one of the following: the time for the UE to decode the PDCCH; or the time for the UE to perform beam switching.

[0023] In conjunction with one or more aspects of the methods performed by the UE as described above, for example, the second time is reported via higher-layer signaling configuration or via UE capabilities.

[0024] In conjunction with one or more aspects of the methods performed by the UE as described above, for example, the physical uplink channel includes a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH).

[0025] According to some aspects of this disclosure, a method performed by a base station in a communication system is provided. The method includes: sending first information to a user equipment (UE), the first information configuring or indicating channel state information (CSI) report configuration information, the first information including information related to a second reference signal (RS), the second RS-related information including information related to one or more second RS resources; receiving from the UE a physical uplink channel carrying fourth information, wherein the fourth information includes index information of at least one second RS resource; sending a physical downlink control channel (PDCCH) to the UE, wherein the DCI format carried by the PDCCH includes a TCI state field indicating a Transmission Configuration Indication (TCI) state, the PDCCH not earlier than a first time after the physical uplink channel, and the TCI state being applied a second time after the PDCCH if a first condition is met, wherein the first condition includes: the RS resource corresponding to the TCI state is the same as one of the one or more second RS resources.

[0026] In conjunction with one or more aspects of the method performed by the base station described above, for example, when the TCI state is applied a second time after the PDCCH: the TCI state is applied in the first time unit after the second time after the PDCCH.

[0027] In conjunction with one or more aspects of the method performed by the base station as described above, for example, when the TCI state is applied a second time after the PDCCH: the earliest time unit after the second time after the PDCCH is applied.

[0028] In conjunction with one or more aspects of the method performed by the base station as described above, for example, the time unit is a time slot.

[0029] In conjunction with one or more aspects of the method performed by the base station described above, for example, the time unit is the time unit of the serving cell where the PDCCH is located.

[0030] In conjunction with one or more aspects of the method performed by the base station described above, for example, the first information includes first serving cell index information, the first serving cell being the serving cell to which the TCI state is applied.

[0031] In conjunction with one or more aspects of the method performed by the base station described above, for example, the first condition includes that the RS resource corresponding to the TCI state indicated by the TCI state field in the DCI format carried by the PDCCH is the same as one of the one or more second RS resources, and the serving cell indicated by the DCI format is the same as the first serving cell.

[0032] In conjunction with one or more aspects of the method performed by the base station described above, for example, the first information includes serving cell list information, wherein the serving cells in the serving cell list are the serving cells to which the TCI state is applied.

[0033] In conjunction with one or more aspects of the method performed by the base station described above, for example, the first condition includes that the RS resource corresponding to the TCI state indicated by the TCI state field in the DCI format carried by the PDCCH is the same as one of the one or more second RS resources, and the serving cell indicated by the DCI format is a serving cell in the list of serving cells.

[0034] In conjunction with one or more aspects of the method performed by the base station as described above, for example, the first condition includes: the TCI state switching field in the DCI format carried by the PDCCH indicates confirmation of the handover.

[0035] In conjunction with one or more aspects of the method performed by the base station as described above, for example, the first condition includes: the TCI state handover field in the DCI format carried by the PDCCH indicates confirmation of handover, and the serving cell indicated by the DCI format is the same as the first serving cell.

[0036] In conjunction with one or more aspects of the method performed by the base station as described above, for example, the first condition includes: the TCI state handover field in the DCI format carried by the PDCCH indicates confirmation of handover, and the serving cell indicated by the DCI format is a serving cell in the list of serving cells.

[0037] In conjunction with one or more aspects of the method performed by the base station described above, for example, the information related to the one or more second RS resources includes at least one of the following: an identifier (ID) for each of the one or more second RS resources; a bandwidth portion (BWP) of each second RS resource; and the serving cell of each second RS resource.

[0038] In conjunction with one or more aspects of the method performed by the base station as described above, for example, the RS resource includes at least one of the following: Non-zero power (NZP) - Channel state information (CSI) - RS resource; CSI - Interference measurement (IM) - resource; CSI - Synchronization signal block (SSB) - resource.

[0039] In conjunction with one or more aspects of the method performed by the base station as described above, for example, the first time is based on at least one of the following: time for the base station to decode the fourth information; or time for the base station to schedule the PDCCH.

[0040] In conjunction with one or more aspects of the methods performed by the base station as described above, for example, the first time is reported via higher-layer signaling configuration or via UE capability.

[0041] In conjunction with one or more aspects of the method performed by the base station as described above, for example, the second time is based on at least one of the following: the time for the UE to decode the PDCCH; or the time for the UE to perform beam switching.

[0042] In conjunction with one or more aspects of the methods performed by the base station as described above, for example, the second time is reported via higher-layer signaling configuration or via UE capabilities.

[0043] In conjunction with one or more aspects of the methods performed by the base station as described above, for example, the physical uplink channel includes a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH).

[0044] According to some aspects of this disclosure, a user equipment (UE) in a communication system is also provided. The UE includes: a transceiver; and one or more processors coupled to the transceiver and configured to perform one or more aspects of the methods performed by the UE described above.

[0045] According to some aspects of this disclosure, a base station in a communication system is also provided. The base station includes: a transceiver; and one or more processors coupled to the transceiver and configured to perform one or more aspects of the methods described above performed by the base station.

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

[0047] According to some aspects of this disclosure, a computer-readable storage medium is also provided, on which one or more computer programs are stored, wherein when the one or more computer programs are executed by one or more processors, one or more aspects of the methods performed by the base station described above can be implemented. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments of this disclosure will be briefly described below. Clearly, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit the scope of this disclosure. In the drawings:

[0049] Figure 1 A schematic diagram of an example wireless network according to some embodiments of the present disclosure is shown;

[0050] Figure 2A and Figure 2B Example wireless transmission and reception paths according to some embodiments of this disclosure are shown;

[0051] Figure 3A Example user equipment (UE) is shown according to some embodiments of the present disclosure;

[0052] Figure 3B Example gNBs are shown according to some embodiments of this disclosure;

[0053] Figure 4 A block diagram of a first transceiver node according to some exemplary embodiments of the present disclosure is shown;

[0054] Figure 5 A block diagram of a second transceiver node according to some exemplary embodiments of the present disclosure is shown;

[0055] Figure 6 A flowchart illustrating a method performed by a base station according to some exemplary embodiments of the present disclosure is shown;

[0056] Figure 7 A flowchart illustrating a method performed by a UE according to some exemplary embodiments of this disclosure is shown;

[0057] Figures 8A-8C Examples of uplink transmission timing according to some exemplary embodiments of the present disclosure are shown;

[0058] Figure 9Examples of timing relationships between the PDCCH and the physical uplink channel carrying fourth information are shown in some exemplary embodiments of this disclosure;

[0059] Figure 10 Examples of the timing of the application of the TCI state according to some exemplary embodiments of this disclosure are shown.

[0060] Figure 11 A flowchart illustrating a method performed by a UE according to some exemplary embodiments of this disclosure is shown;

[0061] Figure 12 A flowchart illustrating a method performed by a base station according to some exemplary embodiments of the present disclosure is shown. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0063] Before proceeding with the detailed description below, it may be advantageous to define certain words and phrases used throughout this patent document. The term “coupled” and its derivatives refer to any direct or indirect communication between two or more elements, regardless of whether these elements are physically in contact with each other. The terms “transmit,” “receive,” and “communicate,” and their derivatives cover both direct and indirect communication. The terms “comprising” and “including,” and their derivatives mean including but not limited to. The term “or” is inclusive, meaning and / or. The phrase “associated with,” and its derivatives mean including, comprising, connected to, interconnected with, containing, contained within, connected to or connected to, coupled to or coupled with, communicable with, cooperating with, intertwined, juxtaposed, proximate, bound to or bound to, having, possessing attributes of, having a relationship with, or having a relationship with. The term “controller” means any device, system, or part thereof that controls at least one operation. Such a controller may be implemented in hardware or in a combination of hardware and software and / or firmware. The functionality associated with any particular controller may be centralized or distributed, local or remote. The phrase "at least one of..." when used with a list of items means that different combinations of one or more of the listed items may be used, and it may be necessary to use only one item from the list. For example, "at least one of A, B, and C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, and A and B and C. Similarly, "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 and B and C.

[0064] Furthermore, the various functions described below can be implemented or supported by one or more computer programs, each computer program being formed by computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, procedures, functions, objects, classes, instances, associated data, or portions thereof suitable for implementation in appropriate computer-readable program code. The phrase "computer-readable program code" includes any type of computer code, including source code, object code, and executable code. The phrase "computer-readable medium" includes any type of medium that can be accessed by a computer, such as read-only memory (ROM), random access memory (RAM), hard disk drive, optical disc (CD), digital video disc (DVD), or any other type of storage. "Non-transitory" computer-readable media excludes wired, wireless, optical, or other communication links that transmit transient electrical or other signals. Non-transitory computer-readable media includes media that can permanently store data and media that can store and later rewrite data, such as rewritable optical discs or erasable memory devices.

[0065] The terminology used herein to describe embodiments of the invention is not intended to limit and / or restrict the scope of the invention. For example, unless otherwise defined, technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this invention pertains.

[0066] It should be understood that the terms “first,” “second,” and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Unless the context clearly indicates otherwise, the singular forms “a,” “one,” or “the,” and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. For example, a reference to “component surface” includes a reference to one or more such surfaces.

[0067] As used herein, any reference to “an example” or “example,” “an embodiment” or “an embodiment” means that a particular element, feature, structure, or characteristic described in connection with that 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.

[0068] As used in this article, “a part” of something means “at least some” of that thing, and therefore may mean less than or all of that thing. Thus, “a part” of something includes the whole thing as a special case, that is, an example where the whole thing is a part of something.

[0069] As used in this article, the term "collection" refers to one or more items. Therefore, a collection of items can be a single item or a collection of two or more items.

[0070] In this disclosure, expressions such as "greater than" or "less than" are used as examples to determine whether a specific condition is met, 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 by "greater than or equal to" can be replaced by "greater than" (or vice versa), a condition defined by "less than or equal to" can be replaced by "less than" (or vice versa), and so on. Furthermore, "less than," "less than or equal to," and "not greater than" can be used interchangeably.

[0071] To further understand, the terms "including" or "contains," and similar words, mean that the element or object preceding the word covers the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Above," "below," "left," and "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described objects changes, the relative positional relationship may also change accordingly.

[0072] The various embodiments discussed below, used to describe the principles of this disclosure in this patent document, are for illustrative purposes only and should not be construed in any way as limiting the scope of this disclosure. Those skilled in the art will understand that the principles of this disclosure can be implemented in any suitably arranged wireless communication system. For example, although the following detailed description of exemplary embodiments of this disclosure is directed to LTE and 5G communication systems, those skilled in the art will understand that the main points of this disclosure, with slight modifications, can also be applied to other communication systems with similar technical backgrounds and channel formats without substantially departing from the scope of this disclosure. The technical solutions of this application embodiment can be applied to various communication systems. For example, communication systems may include Global System for Mobile Communications (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), 5th Generation (5G), or New Radio (NR), etc. Furthermore, the technical solutions of this application embodiment can be applied to future-oriented communication technologies.

[0073] Exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the same reference numerals will be used to refer to the same elements described in different drawings.

[0074] The text and accompanying drawings are provided by way of example only to aid the reader in understanding this disclosure. They are not intended and should not be construed as limiting the scope of this disclosure in any way. Although certain embodiments and examples have been provided, it will be apparent to those skilled in the art, based on the content disclosed herein, that changes may be made to the illustrated embodiments and examples without departing from the scope of this disclosure.

[0075] The following Figures 1-3B Various embodiments are described in wireless communication systems implemented using orthogonal frequency division multiplexing (OFDM) or orthogonal frequency division multiple access (OFDMA) communication technologies. Figures 1-3B The description does not imply any suggestion of the physical or architectural aspects of how different embodiments can be implemented. Different embodiments of this disclosure can be implemented in any suitably arranged communication system.

[0076] Figure 1 An example wireless network 100 according to some embodiments of the present disclosure is shown. Figure 1 The embodiment of the wireless network 100 shown is for illustrative purposes only. Other embodiments of the wireless network 100 can be used without departing from the scope of this disclosure.

[0077] Wireless network 100 includes gNodeB (gNB) 101, gNB 102, and gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one Internet Protocol (IP) network 130, such as the Internet, a proprietary IP network, or other data network.

[0078] Depending on the network type, other well-known terms such as "base station" or "access point" can be used instead of "gNodeB" or "gNB". For convenience, the terms "gNodeB" and "gNB" are used in this patent document to refer to network infrastructure components that provide wireless access to remote terminals. Furthermore, depending on the network type, other well-known terms such as "mobile station", "user station", "remote terminal", "wireless terminal", or "user device" can be used instead of "user equipment" or "UE". For example, the terms "terminal", "user equipment", and "UE" can be used in this patent document to refer to remote wireless devices that wirelessly access the gNB, whether the UE is a mobile device (such as a mobile phone or smartphone) or a fixed device as commonly understood (such as a desktop computer or vending machine).

[0079] gNB 102 provides wireless broadband access to network 130 to multiple first user equipments (UEs) within its coverage area 120. The multiple first UEs include: UE 111, which may be located in a small business (SB); UE 112, which may be located in an enterprise (E); UE 113, which may be located in a WiFi hotspot (HS); UE 114, which may be located in a first residence (R); UE 115, which may be located in a second residence (R); and UE 116, which may be a mobile device (M), such as a cellular phone, wireless laptop computer, wireless PDA, etc. gNB 103 provides wireless broadband access to network 130 to multiple second UEs within its coverage area 125. The multiple second UEs include UE 115 and UE 116. In some embodiments, one or more of gNBs 101-103 are capable of communicating with each other and with UEs 111-116 using 5G, LTE, LTE-A, WiMAX, or other advanced wireless communication technologies.

[0080] The dashed lines indicate the approximate extent of coverage areas 120 and 125, which are shown as approximately circular for illustrative and explanatory purposes only. It should be clearly understood that coverage areas associated with the gNB, such as coverage areas 120 and 125, can have other shapes, including irregular shapes, depending on the configuration of the gNB and variations in the radio environment associated with natural and man-made obstacles.

[0081] As 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 this disclosure. In some embodiments, one or more of gNB 101, gNB 102, and gNB 103 support codebook design and architecture for systems having 2D antenna arrays.

[0082] although Figure 1 An example of a wireless network 100 is shown, but it is possible to... Figure 1 Various modifications can be made. For example, wireless network 100 can include any number of gNBs and any number of UEs in any suitable arrangement. Furthermore, gNB 101 can communicate directly with any number of UEs and provide those UEs with wireless broadband access to network 130. Similarly, each gNB 102-103 can communicate directly with network 130 and provide UEs with direct wireless broadband access to network 130. In addition, gNBs 101, 102, and / or 103 can provide access to other or additional external networks, such as external telephone networks or other types of data networks.

[0083] Figure 2A and Figure 2BExample wireless transmit and receive paths according to some embodiments of this disclosure are shown. In the following description, transmit path 200 can be described as being implemented in a gNB (such as gNB 102), while receive path 250 can be described as being implemented in a UE (such as UE 116). However, it should be understood that receive path 250 can be implemented in a gNB, and transmit path 200 can be implemented in a UE. In some embodiments, receive path 250 is configured to support codebook design and architecture for a system having a 2D antenna array as described in embodiments of this disclosure.

[0084] The transmit path 200 includes a channel coding and modulation block 205, a serial-to-parallel (S-to-P) block 210, an N-point inverse fast Fourier transform (IFFT) block 215, a parallel-to-serial (P-to-S) block 220, a cyclic prefix addition block 225, and an up-converter (UC) 230. The receive path 250 includes a down-converter (DC) 255, a cyclic prefix removal block 260, a serial-to-parallel (S-to-P) block 265, an N-point fast Fourier transform (FFT) block 270, a parallel-to-serial (P-to-S) block 275, and a channel decoding and demodulation block 280.

[0085] In transmit path 200, channel coding and modulation block 205 receives a set of information bits, applies coding (such as low-density parity-check (LDPC) coding), and modulates the input bits (such as using quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) to generate a sequence of frequency-domain modulated symbols. Serial-to-parallel (S-to-P) block 210 converts (e.g., demultiplexes) the serial modulated symbols into parallel data to generate N parallel symbol streams, where N is the number of IFFT / FFT points used in gNB 102 and UE 116. N-point IFFT block 215 performs IFFT operations on the N parallel symbol streams to generate a time-domain output signal. Parallel-to-serial block 220 converts (e.g., multiplexes) the parallel time-domain output symbols from N-point IFFT block 215 to generate a serial time-domain signal. Cyclic prefix addition block 225 inserts a cyclic prefix into the time-domain signal. Upconverter 230 modulates (e.g., upconverts) the output of the added cyclic prefix block 225 to an RF frequency for transmission via a wireless channel. The signal can also be filtered at the baseband before being converted to the RF frequency.

[0086] The RF signal transmitted from gNB 102 reaches UE 116 after passing through the wireless channel, and UE 116 performs the opposite operation to that at gNB 102. Downconverter 255 downconverts the received signal to the baseband frequency, and cyclic prefix removal block 260 removes the cyclic prefix to generate a serial time-domain baseband signal. Serial-to-parallel block 265 converts the time-domain baseband signal into a parallel time-domain signal. N-point FFT block 270 performs an FFT algorithm to generate N parallel frequency-domain signals. Parallel-to-serial block 275 converts the parallel frequency-domain signals into a sequence of modulated data symbols. Channel decoding and demodulation block 280 demodulates and decodes the modulated symbols to recover the original input data stream.

[0087] Each of gNBs 101-103 can implement a transmission path 200 similar to that used for transmission to UEs 111-116 in the downlink, and a reception path 250 similar to that used for reception from UEs 111-116 in the uplink. Similarly, each of UEs 111-116 can implement a transmission path 200 for transmission to gNBs 101-103 in the uplink, and a reception path 250 for reception from gNBs 101-103 in the downlink.

[0088] Figure 2A and Figure 2B Each of the components can be implemented using only hardware, or using a combination of hardware and software / firmware. As a specific example, Figure 2A and Figure 2B At least some of the components can be implemented in software, while others can be implemented in configurable hardware or a combination of software and configurable hardware. For example, FFT block 270 and IFFT block 215 can be implemented as configurable software algorithms, wherein the value of the number of points N can be modified according to the implementation method.

[0089] Furthermore, although the description uses FFT and IFFT, this is merely illustrative and should not be construed as limiting the scope of this disclosure. Other types of transforms, such as the Discrete Fourier Transform (DFT) and Inverse Discrete Fourier Transform (IDFT) functions, can be used. It should be understood that for DFT and IDFT functions, the value of variable N can be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of variable N can be any integer that is a power of 2 (such as 1, 2, 4, 8, 16, etc.).

[0090] although Figure 2A and Figure 2B An example of a wireless transmit and receive path is shown, but it is possible to modify it further. Figure 2A and Figure 2B Make various changes. For example, Figure 2A and Figure 2B The various components can be combined, further subdivided, or omitted, and additional components can be added as needed. Furthermore, Figure 2A and Figure 2B This is intended to illustrate examples of the types of send and receive paths that can be used in a wireless network. Any other suitable architecture can be used to support wireless communication in a wireless network.

[0091] Figure 3A Example UE 116 according to this disclosure is shown. Figure 3A The embodiment of UE 116 shown is for illustrative purposes only, and Figure 1 UEs 111-115 can have the same or similar configurations. However, UEs have a wide variety of configurations, and Figure 3A This disclosure is not intended to limit the scope of any particular implementation of the UE.

[0092] UE 116 includes an antenna 301, a radio frequency (RF) transceiver 302, a transmit (TX) processing circuitry 303, a microphone 304, and a receive (RX) processing circuitry 305. UE 116 also includes a speaker 306, a controller / processor 307, an input / output (I / O) interface 308, multiple input devices 309, a display 310, and a memory 311. The memory 311 includes an operating system (OS) 312 and one or more applications 313.

[0093] RF transceiver 302 receives incoming RF signals transmitted by a gNB of wireless network 100 from antenna 301. RF transceiver 302 down-converts the incoming RF signals to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is sent to RX processing circuitry 305, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. RX processing circuitry 305 sends the processed baseband signal to speaker 306 (e.g., for voice data) or to controller / processor 307 (e.g., for web browsing data) for further processing.

[0094] TX processing circuitry 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. TX processing circuitry 303 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate processed baseband or IF signals. RF transceiver 302 receives the processed baseband or IF signals from TX processing circuitry 303 and up-converts the baseband or IF signals into RF signals transmitted via antenna 301.

[0095] The controller / processor 307 may include one or more processors or other processing devices and execute an OS 312 stored in memory 311 to control the overall operation of the UE 116. For example, the controller / processor 307 may control the reception of forward channel signals and the transmission of reverse channel signals through the RF transceiver 302, the RX processing circuit 305, and the TX processing circuit 303 according to known principles. In some embodiments, the controller / processor 307 includes at least one microprocessor or microcontroller.

[0096] 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 a system having a 2D antenna array as described in the embodiments of this disclosure. The controller / processor 307 is capable of moving data into or out of the memory 311 as needed for the execution of the process. In some embodiments, the controller / processor 307 is configured to execute an application 313 based on the OS 312 or in response to signals received from a gNB or operator. The controller / processor 307 is also coupled to an I / O interface IF 308, which provides the UE 116 with the ability to connect to other devices such as laptop computers and handheld computers. The I / O interface 308 is the communication path between these accessories and the controller / processor 307.

[0097] The controller / processor 307 is also coupled to input devices(s) 309 and a display 310. An operator of the UE 116 can use the input devices(s) 309 to input data into the UE 116. The display 310 may be a liquid crystal display (LCD) or another display capable of displaying text and / or at least limited graphics (such as from a website). Memory 311 is coupled to the controller / processor 307. A portion of memory 311 may include random access memory (RAM), while another portion of memory 311 may include flash memory or other read-only memory (ROM).

[0098] although Figure 3A An example of UE 116 is shown, but it is possible to... Figure 3A Make various changes. For example, Figure 3A The various components can be combined, further subdivided, or omitted, and additional components can be added as needed. As a specific example, the controller / processor 307 can be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Furthermore, although... Figure 3A The UE116 is shown configured as a mobile phone or smartphone, but the UE can be configured to operate as other types of mobile or fixed devices.

[0099] 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, UEs 116 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, mesh networks, etc.). In this case, UEs 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 UEs 116 via downlink control information (DCI), radio resource control (RRC) signaling, media access control-control element (MAC-CE), or via system information (e.g., system information block (SIB)).

[0100] Figure 3B An example gNB 102 according to some embodiments of the present disclosure is shown. Figure 3B The embodiment of gNB 102 shown is for illustrative purposes only, and Figure 1 Other gNBs can have the same or similar configurations. However, gNBs have a wide variety of configurations, and Figure 3B The scope of this disclosure is not limited to any particular implementation of the gNB. It should be noted that gNB 101 and gNB 103 can include the same or similar structures as gNB 102.

[0101] like Figure 3B As shown, gNB 102 includes multiple antennas 370a-370n, multiple RF transceivers 372a-372n, transmit (TX) processing circuitry 374, and receive (RX) processing circuitry 376. In some embodiments, one or more of the multiple antennas 370a-370n include a 2D antenna array. gNB 102 also includes a controller / processor 378, a memory 380, and a backhaul or network interface 382.

[0102] RF transceivers 372a-372n receive incoming RF signals, such as signals transmitted by the UE or other gNBs, from antennas 370a-370n. RF transceivers 372a-372n down-convert the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are sent to RX processing circuitry 376, which generates processed baseband signals by filtering, decoding, and / or digitizing the baseband or IF signals. RX processing circuitry 376 sends the processed baseband signals to controller / processor 378 for further processing.

[0103] 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. The TX processing circuit 374 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 372a-372n receive the outgoing processed baseband or IF signal from the TX processing circuit 374 and up-convert the baseband or IF signal into an RF signal transmitted via antennas 370a-370n.

[0104] The controller / processor 378 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 378 may control the reception of forward channel signals and the transmission of reverse channel signals via RF transceivers 372a-372n, RX processing circuitry 376, and TX processing circuitry 374, according to known principles. The controller / processor 378 may also support additional functions, such as more advanced wireless communication functions. For example, the controller / processor 378 may perform a BIS process, such as by a blind interference sensing (BIS) algorithm, and decode the received signal after subtracting interference. The controller / processor 378 may support any of a wide variety of other functions in the gNB 102. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0105] The controller / processor 378 is also capable of executing programs and other processes, such as a basic operating system, residing in the memory 380. The controller / processor 378 is also capable of supporting channel quality measurement and reporting for systems having 2D antenna arrays as described in embodiments of this disclosure. In some embodiments, the controller / processor 378 supports communication between entities such as web RTCs. The controller / processor 378 is capable of moving data into or out of the memory 380 as needed for the execution of processes.

[0106] The controller / processor 378 is also coupled to a backhaul or network interface 382. The backhaul or network interface 382 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or over a network. The backhaul or network interface 382 is capable of supporting communication via any suitable wired or wireless connection(s). For example, when the gNB 102 is implemented as part of a cellular communication system (such as a cellular communication system supporting 5G or new radio access technologies or NR, LTE, or LTE-A), the backhaul or network interface 382 allows the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the backhaul or network interface 382 allows the gNB 102 to communicate with a larger network (such as the Internet) via a wired or wireless local area network or via a wired or wireless connection. The backhaul or network interface 382 includes any suitable architecture supporting communication via a wired or wireless connection, such as an Ethernet or RF transceiver.

[0107] Memory 380 is coupled to controller / processor 378. A portion of memory 380 may include RAM, while another portion may include flash memory or other ROM. In some embodiments, multiple instructions, such as a BIS algorithm, are stored in memory. The multiple instructions are configured to cause controller / processor 378 to perform the BIS process and decode the received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0108] As described in more detail below, the transmit and receive paths of the gNB 102 (implemented using RF transceivers 372a-372n, TX processing circuitry 374, and / or RX processing circuitry 376) support aggregated communication with FDD and TDD cells.

[0109] although Figure 3B An example of gNB 102 is shown, but it is possible to compare it with other models. Figure 3B Various modifications can be made. For example, gNB102 can include any number of... Figure 3A Each component shown. As a specific example, the access point can include multiple 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 a single instance including TX processing circuitry 374 and a single instance including RX processing circuitry 376, the gNB 102 can include multiple instances of each (such as one for each RF transceiver).

[0110] Those skilled in the art will understand that the terms "terminal" and "terminal device" as used herein include both devices that receive wireless signals, devices that only possess wireless signal receiver capabilities without transmission capabilities, and hardware devices that possess the ability to receive and transmit, capable of bidirectional communication over a bidirectional communication link. Such devices may include: cellular or other communication devices having a single-line display, a multi-line display, or a cellular or other communication device without a multi-line display; PCS (Personal Communication System) that can combine voice, data processing, fax, and / or data communication capabilities; PDA (Personal Digital Assistant) that may include a radio frequency receiver, pager, Internet / intranet access, web browser, notepad, calendar, and / or GPS (Global Positioning System) receiver; and conventional laptop and / or handheld computers or other devices that have and / or include radio frequency receivers. As used herein, "terminal" or "terminal device" can be portable, transportable, installed in a means of transportation (air, sea, and / or land), or suitable and / or configured to operate locally, and / or in a distributed manner, operating in any other location on Earth and / or in space. "Terminal" or "terminal device" as used herein can also be a communication terminal, an internet access terminal, or a music / video playback terminal, such as a PDA, a MID (Mobile Internet Device), and / or a mobile phone with music / video playback capabilities, or a smart TV, set-top box, etc.

[0111] With the rapid development of the information industry, especially the growing demand from mobile internet and the Internet of Things (IoT), unprecedented challenges are being brought to future mobile communication technologies. To address these challenges, the communications industry and academia have launched extensive research into fifth-generation mobile communication technology (5G) in preparation for the 2020s. Currently, the ITU report ITU-R M. [IMT.VISION] discusses the framework and overall goals of future 5G, detailing the demand outlook, application scenarios, and key performance indicators. Addressing new demands in 5G, the ITU report ITU-R M. [IMT.FUTURE TECHNOLOGY TRENDS] provides information on 5G technology trends, aiming to address significant issues such as significantly improved system throughput, consistent user experience, scalability to support IoT, latency, energy efficiency, cost, network flexibility, support for emerging services, and flexible spectrum utilization. The first phase of work on 5G is already underway within 3GPP (3rd Generation Partnership Project). To support more flexible scheduling, 3GPP decided to support variable Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) feedback latency in 5G. In existing Long Term Evolution (LTE) systems, the time from downlink data reception to uplink HARQ-ACK transmission is fixed, for example, in Frequency Division Duplex (FDD) systems, the latency is four subframes. In Time Division Duplex (TDD) systems, a HARQ-ACK feedback latency is determined for the corresponding downlink subframe based on the uplink and downlink configuration. In 5G systems, whether FDD or TDD, for a given downlink time unit (e.g., a downlink slot or downlink mini-slot; or, for example, a PDSCH time unit), the uplink time unit (e.g., a PUCCH time unit) for HARQ-ACK feedback is variable. For example, the latency of HARQ-ACK feedback can be dynamically indicated through physical layer signaling, or different HARQ-ACK latencies can be determined based on factors such as different services or user capabilities.

[0112] 3GPP has defined three main directions for 5G application scenarios: eMBB (enhanced mobile broadband), mMTC (massive machine-type communication), and URLLC (ultra-reliable and low-latency communication). eMBB aims to further improve data transmission rates on top of existing mobile broadband services to enhance user experience and achieve the ultimate communication experience between people. mMTC and URLLC are application scenarios such as the Internet of Things (IoT), but they have different focuses: mMTC primarily addresses information interaction between people and things, while URLLC mainly reflects the communication needs between things.

[0113] In some situations, channel conditions may change. How to adaptively adjust communication in real time to the latest channel conditions, such as beam switching, is a problem that needs to be solved.

[0114] To at least address the above-mentioned technical problems, embodiments of this disclosure provide a method executed by a terminal in a wireless communication system, a terminal, a method executed by a base station, a base station, and a non-transitory computer-readable storage medium. Various embodiments of this disclosure will be described in detail below with reference to the accompanying drawings.

[0115] In the exemplary embodiments of this disclosure, for ease of description, a first transceiver node and a second transceiver node are defined. For example, the first transceiver node can be a base station, and the second transceiver node can be a UE. As another example, the exemplary embodiments of this disclosure can be applied to sidelink communication scenarios, in which case the first transceiver node can be a UE, and the second transceiver node can be another UE. Therefore, the first transceiver node and the second transceiver node can each be any suitable communication node. In the following description, the first transceiver node is illustrated using a base station as an example (but not limited to), and the second transceiver node is illustrated using a UE as an example (but not limited to).

[0116] In describing wireless communication systems and in this disclosure described below, a method (or configuration method) for transmitting higher-layer signaling or higher-layer signals can be a signaling method for transmitting information from a base station to a terminal via a downlink data channel of the physical layer or from a terminal to a base station via an uplink data channel of the physical layer. Examples of signaling methods can include signaling methods for transmitting information via radio resource control (RRC) signaling, packet data convergence protocol (PDCP) signaling, or medium access control (MAC) control element (CE).

[0117] In the description of exemplary embodiments of this disclosure, higher-layer signaling may be signaling corresponding to at least one or a combination of one or more of the following signaling.

[0118] - MIB (Master Message Block)

[0119] - SIB (System Information Block) or SIB X (X=1, 2, ...)

[0120] - RRC signaling

[0121] - MAC CE

[0122] Physical layer (Layer 1 (L1)) signaling can be signaling corresponding to at least one or a combination of one or more of the following signaling.

[0123] - PDCCH (Physical Downlink Control Channel)

[0124] - DCI (Downlink Control Information)

[0125] - UE-specific DCI

[0126] - Group Public DCI

[0127] - Public DCI (e.g., multicast DCI)

[0128] - Scheduling DCI (e.g., DCI used to schedule downlink or uplink data)

[0129] - Non-scheduled DCI (e.g., DCI other than the DCI used to schedule downlink or uplink data)

[0130] - PUCCH (Physical Uplink Control Channel)

[0131] - UCI (Uplink Control Information)

[0132] - Paging

[0133] - PRACH (Physical Random Access Channel)

[0134] - RAR (Random Access Response)

[0135] In the description of exemplary embodiments of this disclosure, uplink control signaling may include physical layer signaling and / or higher layer signaling. As described above, physical layer signaling may include UCI and / or PUCCH and / or PRACH, and higher layer signaling may include RRC signaling and / or MAC CE.

[0136] In the description of exemplary embodiments of this disclosure, downlink control signaling may include physical layer signaling and / or higher layer signaling. As described above, 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), unscheduled DCI, paging, and RAR, while higher layer signaling may include one or more of MIB, SIB, or SIB X (X=1, 2, ...), RRC signaling, or MAC CE. Therefore, "configure or indicate X by downlink control signaling" will be understood as configuring or indicating X by physical layer signaling, or by higher layer signaling, or by a combination of higher layer signaling and physical layer signaling.

[0137] Figure 4 A block diagram of a first transceiver node 400 according to some exemplary embodiments of the present disclosure is shown.

[0138] refer to Figure 4 The first transceiver node 400 may include a transceiver 401 and a controller 402.

[0139] Transceiver 401 can be configured to send first data and / or first control signaling to a second transceiver node, and / or receive second data and / or second control signaling from the second transceiver node.

[0140] 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 transceiver node 400, including controlling the transceiver 401 to send first data and / or first control signaling to the second transceiver node, and / or to receive second data and / or second control signaling from the second transceiver node.

[0141] In some implementations, controller 402 may be configured to perform one or more operations of the methods described in the various embodiments below, such as operations that may be performed by a base station.

[0142] In the following description, the first transceiver node is illustrated using a base station as an example (but not limited to), and the second transceiver node is illustrated using a UE as an example (but not limited to). The first data is illustrated using downlink data (but not limited to). The first control signaling is illustrated using downlink control signaling (but not limited to). The second control signaling is illustrated using uplink control signaling (but not limited to).

[0143] In this document, depending on the network type, the term "base station" or "BS" can refer to any component (or set of components) configured to provide radio access to a network, such as a Transmission Point (TP), Transmission and Reception Point (TRP), enhanced base station (eNodeB or eNB), 5G base station (gNB), macro cell, femtocell, WiFi access point (AP), or other wireless network equipment. A base station can provide radio access according to one or more wireless communication protocols—for example, 5G 3GPP New Radio Interface / Access (NR), Long Term Evolution (LTE), Advanced LTE (LTE-A), High Speed ​​Packet Access (HSPA), Wi-Fi 802.11a / b / g / n / ac, etc.

[0144] Figure 5 A block diagram of a second transceiver node according to some exemplary embodiments of the present disclosure is shown.

[0145] refer to Figure 5 The second transceiver node 500 may include a transceiver 501 and a controller 502.

[0146] Transceiver 501 can be configured to receive first data and / or first control signaling from a first transceiver node and to send second data and / or second control signaling to the first transceiver node at a defined time interval.

[0147] The controller 502 may be an application-specific integrated circuit (ASIC) or at least one processor. The controller 502 may be configured to control the overall operation of the second transceiver node, and to control the second transceiver node to implement the methods proposed in the exemplary embodiments of this disclosure. For example, the controller 502 may be configured to determine second data and / or second control signaling and a time unit for transmitting the second data and / or second control signaling based on first data and / or first control signaling, and to control the transceiver 501 to transmit the second data and / or second control signaling to the first transceiver node within the determined time unit.

[0148] In some implementations, controller 502 may be configured to perform one or more operations of the methods described in the various exemplary embodiments below, such as operations that may be performed by a terminal (UE).

[0149] In combination Figure 4 or Figure 5 In the described implementation, the first data may be data sent from the first transceiver node to the second transceiver node. In the following example, downlink data carried via PDSCH (Physical Downlink Shared Channel) is used as an example (but not limited to) to illustrate the first data.

[0150] In combination Figure 4 or Figure 5 In the described implementation, the second data can be data sent from the second transceiver node to the first transceiver node. In the following example, uplink data carried by PUSCH (Physical Uplink Shared Channel) is used as an example (but not limited to) to illustrate the second data.

[0151] In combination Figure 4 or Figure 5 In the described implementation, the first control signaling can be control signaling sent from the first transceiver node to the second transceiver node. In the following examples, downlink control signaling is used as an example (but not limited to) to illustrate the first control signaling. Downlink control signaling can be DCI (Downlink control information) carried through PDCCH (Physical Downlink Control Channel) and / or control signaling (e.g., higher-layer signaling) carried through PDSCH (Physical Downlink Shared Channel). For example, DCI can be UE-specific DCI, DCI can also be a common DCI, which can be a DCI shared by some UEs, such as a group common DCI, a DCI shared by all UEs in the serving cell (e.g., a cell common DCI), or a multicast DCI or broadcast DCI. DCI can be an uplink DCI (e.g., the DCI that schedules PUSCH) and / or a downlink DCI (e.g., the DCI that schedules PDSCH).

[0152] It should be noted that, in the description of exemplary embodiments of this disclosure, the following terms can be used interchangeably:

[0153] -DCI

[0154] -DCI format

[0155] -PDCCH

[0156] - Grant

[0157] - Dynamic grant

[0158] In combination Figure 4 or Figure 5 In the described implementation, the second control signaling can be control signaling sent from the second transceiver node to the first transceiver node. In the following examples, uplink control signaling is used as an example (but not limited to) to illustrate the second control signaling. Uplink control signaling can be UCI (Uplink Control Information) carried via PUCCH (Physical Uplink Control Channel) and / or control signaling (e.g., higher-layer signaling) carried via PUSCH (Physical Uplink Shared Channel). The type of UCI can include one or more of the following: HARQ-ACK information, SR (Scheduling Request), LRR (Link Recovery Request), CSI (Channel State Information), or CG (Configured grant) UCI, UTO (unused transmission opportunity) UCI. In the description of exemplary embodiments of this disclosure, when UCI is carried by PUCCH, UCI and PUCCH can be used interchangeably.

[0159] In some implementations, the PUCCH carrying an SR can be a PUCCH carrying a positive SR and / or a negative SR. The SR can be a positive SR and / or a negative SR.

[0160] In some implementations, the CSI may also be Part 1 CSI and / or Part 2 CSI.

[0161] In combination Figure 4 or Figure 5 In the described implementation, the time unit for the first transceiver node to send the first data and / or the first control signaling can be a downlink time unit, such as a downlink time slot.

[0162] In combination Figure 4 or Figure 5 In the described implementation, the time unit for the second transceiver node to send the second data and / or the second control signaling can be an uplink time unit, such as an uplink time slot, a PUCCH time slot, a PCell (primary cell) time slot, or a PUCCH time slot on the PCell. A 'PUCCH time slot' can be understood as a PUCCH transmission time slot.

[0163] In the description of exemplary embodiments of this disclosure, a time unit (e.g., a downlink time unit or an uplink time unit) may be one or more slots, one or more sub-slots, one or more OFDM symbols, one or more spans, one or more subframes, one or more frames, or one or more half frames.

[0164] Figure 6 A flowchart of a method 600 performed by a base station according to some exemplary embodiments of the present disclosure is shown.

[0165] refer to Figure 6 During 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.

[0166] During operation S620, the base station receives uplink data and / or uplink control signaling from the UE. For example, the base station receives uplink data and / or uplink control signaling from the UE in a time unit.

[0167] In some implementations, operations S610 and / or S620 may be performed based on methods described in various exemplary embodiments of the present disclosure (e.g., various methods described below).

[0168] In some implementations, method 600 may omit one or more of operations S610 or S620, or may include additional operations, such as operations performed by the base station based on the methods described in various exemplary embodiments of this disclosure (e.g., the various methods described below).

[0169] Figure 7 A flowchart of a method 700 performed by a UE according to an exemplary embodiment of the present disclosure is shown.

[0170] refer to Figure 7 During operation S710, the UE can receive downlink data (e.g., downlink data carried via PDSCH) and / or downlink control signaling from the base station. For example, the UE can receive downlink data and / or downlink control signaling from the base station based on predefined rules and / or configuration parameters that have already been received.

[0171] Optionally, in operation S720, the UE determines the transmission power and / or time unit of the uplink data and / or uplink control signaling based on the downlink data and / or downlink control signaling.

[0172] During operation S730, the UE sends uplink data and / or uplink control signaling to the base station. For example, the UE sends uplink data and / or uplink control signaling to the base station at a determined time unit. Another example is that the UE sends uplink data and / or uplink control signaling to the base station at a determined time unit based on a determined transmission power.

[0173] [HARQ / Scheduling General Timing]

[0174] In some implementations, operations S710 and / or S720 and / or S730 may be performed based on methods described in accordance with various exemplary embodiments of the present disclosure (e.g., various methods described below).

[0175] In some implementations, method 700 may omit one or more of operations S710, S720 or S730, or may include additional operations, such as operations performed by the UE (terminal) based on the methods described in various exemplary embodiments of this disclosure (e.g., the various methods described below).

[0176] In some implementations, HARQ-ACK can be used to perform acknowledgment / negative acknowledgment (ACK / NACK) for downlink transmissions.

[0177] The following will refer to Figures 8A-8C Examples describing uplink transmission timing.

[0178] In one example, the UE receives a DCI and receives a PDSCH according to the time-domain resources indicated in the DCI. For example, parameter K0 can be used to indicate the time unit interval (offset) between the PDSCH scheduled by the DCI and the DCI (e.g., the PDCCH carrying the DCI), and the unit of K0 can be a time slot. For example, the time slot of the PDSCH (i.e., the time slot of the active BWP of the serving cell where the PDSCH resides). Figure 8A An example where K0=1 is given. Figure 8A In the example shown, the time interval between the PDSCH scheduled by the DCI and the PDCCH carrying the DCI is one time slot. In an exemplary embodiment of this disclosure, "UE receives DCI" can mean "UE detects DCI".

[0179] In another example, the UE receives a DCI and transmits a PUSCH according to the time-domain resources indicated in the DCI. For example, a timing parameter K2 can be used to indicate the time unit interval between the PUSCH scheduled by the DCI and the DCI (e.g., the PDCCH carrying the DCI), and the unit of K2 can be a time slot. For example, the time slot of the PUSCH (i.e., the time slot of the active BWP of the serving cell where the PUSCH resides). Figure 8B An example where K2=1 is given. Figure 8B In the example shown, the time unit interval between the DCI-scheduled PUSCH and the PDCCH carrying the DCI is one time slot. K2 can also represent the time unit interval between the PDCCH activating the CG (configured grant) PUSCH and the first activated CG PUSCH (e.g., the CG PUSCH transmission timing). In the examples of this disclosure, unless otherwise specified, the PUSCH can be a dynamically scheduled (e.g., DCI-scheduled) PUSCH (e.g., referred to as DG (dynamic grant) PUSCH in the description of exemplary embodiments of this disclosure) and / or a PUSCH not scheduled by DCI (e.g., CG PUSCH).

[0180] In another example, the UE receives a PDSCH and can transmit the HARQ-ACK information received on that PDSCH on the PUCCH within a time unit (e.g., an uplink time unit). For example, a timing parameter (also called a timing value) K1 (e.g., a higher-layer parameter dl-DataToUL-ACK) can be used to indicate the time unit interval between the PUCCH carrying the HARQ-ACK information received on the PDSCH and the PDSCH itself, and the unit of K1 can be a time unit (e.g., an uplink time unit) (e.g., the time unit of the PUCCH), such as a time slot or sub-time slot. For example, Figure 8A An example is given where K1=3. Figure 8A In the example shown, the PUCCH carrying the HARQ-ACK information received by the PDSCH is spaced three time slots apart from the PDSCH. It should be noted that in the description of the exemplary embodiments of this disclosure, timing parameter K1 can be used interchangeably with time unit offset K1, timing parameter K0 can be used interchangeably with time unit offset K0, and timing parameter K2 can be used interchangeably with time unit offset K2.

[0181] A PDSCH can be a DCI-scheduled PDSCH and / or an SPS (Semi-Persistent Scheduling) PDSCH. Once an SPS PDSCH is activated by the DCI, the UE will periodically receive it. In the examples disclosed herein, an SPS PDSCH can be equivalent to a PDSCH without DCI / PDCCH scheduling. Once an SPS PDSCH is released (deactivated), the UE will no longer receive it.

[0182] In the description of exemplary embodiments of this disclosure, HARQ-ACK can be a HARQ-ACK received by an SPS PDSCH (e.g., a HARQ-ACK without DCI indication) and / or a HARQ-ACK indicated by a DCI format (e.g., a HARQ-ACK received by a DCI-formatted PDSCH, where the PDSCH reception can be a PDSCH reception providing a transport block with enabled HARQ-ACK information for a TB). Another example is a HARQ-ACK in a DCI format without scheduled PDSCH.

[0183] In another example, the UE receives a DCI (e.g., a DCI instructing SPSPDSCH to release (deactivate)) and transmits the HARQ-ACK information for that DCI on the PUCCH in a time unit (e.g., an uplink time unit). For example, a timing parameter K1 can be used to represent the time unit interval between the PUCCH carrying the HARQ-ACK information for the DCI and the DCI itself, where K1 can be in units of time units (e.g., uplink time units), such as time slots or sub-time slots. Figure 8C An example is given where K1=3. Figure 8C In the example, the time unit interval between the PUCCH carrying the HARQ-ACK information of the DCI and the DCI is 3 time slots. For example, the timing parameter K1 can be used to represent the time unit interval between the PDCCH receiving the DCI carrying the DCI indicating the release (deactivation) of the SPS PDSCH and the PUCCH feeding back its HARQ-ACK.

[0184] In some implementations, during operation S720, the UE can report (or signal / transmit) its UE capabilities to the base station or indicate those capabilities. For example, the UE reports (or transmits) its UE capabilities to the base station by sending a PUSCH. In this case, the PUSCH sent by the UE contains UE capability information. A UE capability can be a UE capability parameter or a value of a UE capability parameter.

[0185] In some implementations, the base station can configure higher-layer signaling for the UE based on the UE capabilities received from the UE.

[0186] In some implementations, the downlink channel (downlink resource) may include PDCCH and / or PDSCH. The uplink channel (uplink resource) may include PUCCH and / or PUSCH.

[0187] [Two-level priority]

[0188] In some implementations, the UE can be configured with two priority levels for uplink transmission. For example, the UE can be configured with a higher-layer parameter PUCCH-ConfigurationList, where the first PUCCH-Config configures lower-priority PUCCH resources, and the second PUCCH-Config configures higher-priority PUCCH resources. Alternatively, the priority of a PUCCH or PUSCH can be indicated in the DCI, for example, through a physical layer priority index (phy-PriorityIndex) field.

[0189] When two or more uplink physical channels overlap (e.g., overlap in time) on a serving cell, or when PUCCH and PUSCH overlap (e.g., overlap in time), it is necessary to resolve the overlapping for physical channels. "Resolving the overlapping for physical channels" can be understood as "resolving conflicts between overlapping physical channels." The result of resolving the overlapping for physical channels is that the physical channels do not overlap or conflict. The overlapping for physical channels can be resolved through multiplexing and / or prioritization. Multiplexing can be the multiplexing of UCI information from two or more physical channels into one physical channel. For example, multiplexing multiple PUCCHs and / or PUSCHs that overlap in the time domain can include multiplexing UCI information from a PUCCH into one PUCCH or PUSCH. It should be noted that in the description of exemplary embodiments of this disclosure, "resolving the overlapping for physical channels" can be used interchangeably with "determining the overlapping for physical channels." Prioritization can be the transmission of higher-priority physical channels while omitting the transmission of lower-priority physical channels. It should be noted that in the description of exemplary embodiments of this disclosure, "not transmitting a physical channel," "canceling the transmission of a physical channel," "stopping the transmission of a physical channel," and "reducing the priority of a physical channel" can be used interchangeably. For example, prioritizing two PUCCHs and / or PUSCHs that overlap in the time domain may include the UE transmitting the higher-priority PUCCH or PUSCH, and / or the UE not transmitting the lower-priority PUCCH or PUSCH. In embodiments of this disclosure, unless otherwise specified, "resolving physical channel overlap" can be understood as resolving the overlap of physical channels with the same physical layer priority.

[0190] In some implementations, if the UE is configured by higher-layer signaling (e.g., via the higher-layer parameter uci-MuxWithDiffPrio) to multiplex UCIs of different priorities (e.g., HARQ-ACK), the UE can multiplex UCIs of different priorities (e.g., HARQ-ACK) when resolving the overlap of physical channels of different priorities; otherwise (e.g., if the UE is not configured with a parameter to multiplex UCIs of different priorities (e.g., uci-MuxWithDiffPrio)), the UE prioritizes PUCCH and / or PUSCH of different priorities when resolving the overlap of physical channels of different priorities.

[0191] For example, two priority levels can include a first priority and a second priority that are different from each other. In one example, the first priority can be higher than the second priority, that is, the first priority is a higher priority and the second priority is a lower priority. In another example, the first priority can be lower than the second priority. However, the embodiments of this disclosure are not limited to this; for example, the UE can be configured with more than two priority levels. For convenience, in some exemplary embodiments of this disclosure, the description considers the first priority to be higher than the second priority. It should be noted that all embodiments of this disclosure are applicable to the case where the first priority can be higher than the second priority; all embodiments of this disclosure are applicable to the case where the first priority can be lower than the second priority; and all embodiments of this disclosure are applicable to the case where the first priority can be equal to the second priority. In some exemplary embodiments of this disclosure, "first priority," "higher priority," "larger priority index," and "priority index 1" can be used interchangeably. In some exemplary embodiments of this disclosure, "second priority," "lower priority," "smaller priority index," and "priority index 0" can be used interchangeably.

[0192] [Sub-time slot]

[0193] In some implementations, the UE can be configured for subslot-based PUCCH transmission. For example, the subslot length parameter (also referred to as a parameter related to subslot length in the description of exemplary embodiments of this disclosure) of each of the first and second PUCCH configuration parameters (e.g., the higher-layer parameter subslotLengthForPUCCH) can be 7 OFDM symbols, 6 OFDM symbols, or 2 OFDM symbols. The subslot configuration length parameters in different PUCCH configuration parameters can be configured separately. If a PUCCH configuration parameter does not have a configured subslot length parameter, the scheduling time unit of this PUCCH configuration parameter is one slot by default. If a PUCCH configuration parameter has a configured subslot length parameter, the scheduling time unit of this PUCCH configuration parameter is L (L is the configured subslot configuration length) OFDM symbols.

[0194] The mechanisms for slot-based PUCCH transmission and sub-slot-based PUCCH transmission are essentially the same. In this disclosure, a slot can be used to represent a PUCCH occasion unit. For example, if the UE is configured with sub-slots, the slot used as a PUCCH occasion unit can be replaced with a sub-slot. For example, it can be specified by the protocol that if the UE is configured with a sub-slot length parameter (e.g., the higher-layer parameter subslotLengthForPUCCH), unless otherwise specified, the number of symbols contained in the slot for PUCCH transmission is indicated by the sub-slot length parameter.

[0195] For example, if the UE is configured with a sub-slot length parameter, and sub-slot n is the last uplink sub-slot overlapping with a PDSCH or PDCCH reception (e.g., SPS PDSCH release, and / or indication of secondary cell dormancy, and / or triggering a type-3 HARQ-ACK codebook report without scheduled PDSCH reception), then the HARQ-ACK information for that PDSCH or PDCCH reception is sent in uplink sub-slot n+k, where k is determined by timing parameter K1 (the definition of timing parameter K1 can be found in the previous description). As another example, if the UE is not configured with a sub-slot length parameter, and slot n is the last uplink slot overlapping with the downlink slot containing the PDSCH or PDCCH reception, then the HARQ-ACK information for that PDSCH or PDCCH reception is sent in uplink slot n+k, where k is determined by timing parameter K1.

[0196] Multicast Service (MBS)

[0197] In the description of exemplary embodiments of this disclosure, unicast can refer to a communication between a network and a UE, while multicast (or groupcast) can refer to a communication between a network and multiple UEs. For example, a unicast PDSCH can be a PDSCH received by a single UE, and the scrambling of the PDSCH can be based on a UE-specific Radio Network Temporary Identifier (RNTI), such as a Cell-RNTI (C-RNTI). A multicast PDSCH can be a PDSCH received simultaneously by more than one UE, and the scrambling of the multicast PDSCH can be based on an RNTI shared by the UE group. For example, the scrambled UE group common RNTI for multicast PDSCH may include the RNTI scrambled for dynamically scheduled multicast transmissions (e.g., PDSCH) (which may be referred to as the Group RNTI (G-RNTI) in the description of exemplary embodiments of this disclosure) or the RNTI scrambled for multicast SPS transmissions (e.g., SPS PDSCH) (which may be referred to as the Group configured scheduling RNTI (G-CS-RNTI) in the description of exemplary embodiments of this disclosure). The UCI of unicast PDSCH may include HARQ-ACK information, SR, or CSI received by unicast PDSCH. The UCI of multicast PDSCH may include HARQ-ACK information received by multicast PDSCH. In the description of exemplary embodiments of this disclosure, "multicast" may also be replaced with "broadcast".

[0198] [HARQ-ACK Codebook]

[0199] During S710 operation, the UE can receive downlink data (e.g., downlink data carried via PDSCH) and / or downlink control signaling (e.g., DCI format carried via PDCCH) from the base station.

[0200] In operation S720, the UE determines the HARQ-ACK information bits to be transmitted in an uplink time slot based on downlink data and / or downlink control signaling. The determination of the HARQ-ACK information bits to be transmitted in an uplink time slot includes at least one of the following:

[0201] - Determine the value of the HARQ-ACK information bits;

[0202] - Determine the order of the HARQ-ACK information bits;

[0203] - Determine the total number of HARQ-ACK information bits.

[0204] During operation S730, the UE sends HARQ-ACK information bits to the base station. The UE can transmit HARQ-ACK information bits on either the PUCCH or PUSCH.

[0205] In some implementations, the HARQ-ACK codebook may include one or more HARQ-ACK information bits (also referred to as HARQ-ACK information bits in this disclosure) in PDSCH reception and / or DCI format (e.g., DCI format without scheduled PDSCH reception). HARQ-ACK information received via PDSCH can be understood as HARQ-ACK information for the TBs contained in the PDSCH reception. When the UE is configured for PDSCH code block group (CBG) transmission (e.g., with parameter PDSCH-CodeBlockGroupTransmission configured), or when a PDSCH reception contains one or more CBGs, the HARQ-ACK information received via PDSCH can be understood as HARQ-ACK information for the CBGs contained in the PDSCH reception. If one or more PDSCH reception and / or DCI format HARQ-ACK information bits are instructed (or multiplexed) to be transmitted in one (e.g., the same) time unit (e.g., uplink time unit) (e.g., transmitted on the PUCCH in the same time unit), the UE can generate a HARQ-ACK codebook according to predefined rules. The UE generates the HARQ-ACK codebook by sorting the HARQ-ACK information bits and / or compressing (e.g., bundling) them. For example, if a TB or CBG in a PDSCH reception is successfully decoded, the HARQ-ACK information for that TB or CBG is a positive ACK. For example, a positive ACK can be represented by 1 in the HARQ-ACK codebook. If a TB or CBG in a PDSCH reception is not successfully decoded, the HARQ-ACK information for that TB or CBG is a negative ACK (NACK). For example, NACK can be represented by 0 in the HARQ-ACK codebook. For example, the UE can generate the HARQ-ACK codebook according to pseudocode specified in the protocol. In one example, if the UE receives a DCI format that indicates SPS PDSCH release (deactivation), the UE sends a HARQ-ACK message (ACK) in that DCI format. In another example, if the UE receives a DCI format that indicates the secondary cell is in sleep mode, the UE sends a HARQ-ACK message (ACK) in that DCI format.In yet another example, if the UE receives a DCI format that instructs the transmission of HARQ-ACK information for all HARQ-ACK processes of all configured serving cells (e.g., a Type-3 HARQ-ACK codebook), then the UE transmits HARQ-ACK information for all HARQ-ACK processes of all configured serving cells. To reduce the size of the Type-3 HARQ-ACK codebook, in an enhanced Type-3 HARQ-ACK codebook, the UE can transmit HARQ-ACK information for a specific HARQ-ACK process of a specific serving cell based on the DCI instruction. In yet another example, if the UE receives a DCI format that schedules PDSCH reception, then the UE transmits the HARQ-ACK information received on that PDSCH. In yet another example, if the UE receives an SPS PDSCH, the UE transmits the HARQ-ACK information received on that SPS PDSCH. In yet another example, if the UE is configured by higher-layer signaling to receive SPSPDSCH, then the UE transmits the HARQ-ACK information received on that SPS PDSCH. The SPS PDSCH configured to be received by higher-layer signaling may be canceled by other signaling. In another example, if at least one uplink symbol (e.g., OFDM symbol) in the semi-static frame structure configured by the UE by higher-layer signaling overlaps with the symbol received by the SPS PDSCH, the UE will not receive the SPS PDSCH. In yet another example, if the UE is configured to receive the SPS PDSCH by higher-layer signaling according to predefined rules, the UE will send the HARQ-ACK information for the received SPS PDSCH. It should be noted that, in the description of the exemplary embodiments of this disclosure, the overlap of "A" and "B" can mean that "A" and "B" overlap at least partially. That is, the overlap of "A" and "B" includes the case where "A" and "B" completely overlap. The overlap of "A" and "B" can mean that "A" and "B" overlap in the time domain and / or "A" and "B" overlap in the frequency domain.

[0206] In some implementations, if the HARQ-ACK information transmitted in the same time unit (e.g., uplink time unit) (or multiplexed in the same time unit) does not include any DCI-formatted HARQ-ACK information, nor does it include dynamically scheduled PDSCH reception (e.g., DCI-formatted PDSCH reception) and / or DCI HARQ-ACK information, or if the HARQ-ACK information transmitted in the same time unit (e.g., uplink time unit) (or multiplexed in the same time unit) only includes HARQ-ACK information received by one or more SPS PDSCHs, then the UE can generate HARQ-ACK information according to the rules for generating the HARQ-ACK codebook for SPS PDSCH reception (e.g., HARQ-ACK information only received by SPS PDSCH). The UE can multiplex the HARQ-ACK information received only by SPS PDSCHs to a specific PUCCH resource. For example, if the UE is configured with an SPS PUCCH list parameter (e.g., SPS-PUCCH-AN-List), the UE will multiplex HARQ-ACK information received only from the SPS PDSCH into a PUCCH in that SPS PUCCH list. For instance, the UE determines a PUCCH resource in the SPS PUCCH list based on the number of HARQ-ACK bits. If the UE is not configured with an SPS PUCCH list parameter, the UE will multiplex HARQ-ACK information received only from the SPS PDSCH into a specific PUCCH resource for SPS HARQ-ACK (e.g., this PUCCH resource is configured via the n1PUCCH-AN parameter).

[0207] In some implementations, if the HARQ-ACK information transmitted in the same time unit (e.g., uplink time unit) (or multiplexed in the same time unit) includes HARQ-ACK information in DCI format and / or dynamically scheduled PDSCH reception (e.g., PDSCH reception scheduled in DCI format), the UE can generate HARQ-ACK information according to the rules for generating dynamically scheduled PDSCH reception and / or DCI format HARQ-ACK codebooks. The UE can determine whether to generate a semi-static HARQ-ACK codebook (e.g., a Type-1 HARQ-ACK codebook) or a dynamic HARQ-ACK codebook (e.g., a Type-2 HARQ-ACK codebook) based on the HARQ-ACK codebook configuration parameters of the PDSCH reception (e.g., higher-layer parameters pdsch-HARQ-ACK-Codebook). For example, if the UE is configured with HARQ-ACK codebook configuration parameters (e.g., the higher-layer parameter pdsch-HARQ-ACK-Codebook) as semi-static, the UE generates a semi-static HARQ-ACK codebook; if the UE is configured with HARQ-ACK codebook configuration parameters (e.g., the higher-layer parameter pdsch-HARQ-ACK-Codebook) as dynamic, the UE generates a dynamic HARQ-ACK codebook. The dynamic HARQ-ACK codebook can also be an enhanced dynamic HARQ-ACK codebook (e.g., a type-2 HARQ-ACK codebook based on grouping and HARQ-ACK retransmission). The UE can multiplex HARQ-ACK information into dynamically scheduled HARQ-ACK PUCCH resources, which can be configured in the resource set list parameter (e.g., the parameter resourceSetToAddModList). The UE determines a PUCCH resource set (e.g., parameter PUCCH-ResourceSet) in the resource set list based on the number of bits in HARQ-ACK. The PUCCH resource can be determined from a PUCCH in the PUCCH resource set based on the PRI (PUCCH ResourceIndicator) field in the last DCI format.

[0208] In some implementations, if the HARQ-ACK information transmitted in the same time unit (e.g., uplink time unit) (or multiplexed in the same time unit) only includes HARQ-ACK information received by SPS PDSCH (e.g., PDSCH received without DCI format scheduling), then the UE can generate a HARQ-ACK codebook according to the rules for generating the HARQ-ACK codebook of SPS PDSCH received (e.g., pseudocode of the codebook of HARQ-ACK received by SPS PDSCH).

[0209] [Type-1 HARQ-ACK Codebook]

[0210] A semi-static HARQ-ACK codebook (e.g., a type-1 HARQ-ACK codebook) can determine the size of the HARQ-ACK codebook and the ordering of the HARQ-ACK bits based on parameters configured in the semi-static configuration (e.g., parameters configured in higher-level signaling).

[0211] For a serving cell c, with an active downlink BWP (bandwidth part) and an active uplink BWP, the UE determines the candidate PDSCH reception. A set of occasions in which the UE can access the uplink time slot. The corresponding HARQ-ACK information for the candidate PDSCH is sent on one of the PUCCHs.

[0212] It can be determined based on at least one of the following:

[0213] a) The set of HARQ-ACK slot timing values ​​K1 associated with the active uplink BWP on the primary cell or PUCCH-sScell ​​(PUCCH switching SCell, PUCCH switching secondary serving cell);

[0214] b) The set of row indexes of the Time Domain Resource Allocation (TDRA) table associated with the active downlink BWP;

[0215] c) ,in Configure the downlink subcarrier spacing (SCS) for the activated downlink BWP. Configure the uplink subcarrier spacing for the activated uplink BWP.

[0216] d) Semi-static uplink and downlink frame structure configuration, such as the parameters tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.

[0217] e) Downlink slot offset parameters of serving cell c (e.g., higher-layer parameters) ) and their corresponding slot offsets SCS (e.g., higher-level parameters) ), or the time slot offset parameter of the primary cell (e.g., higher-level parameters). ) and their corresponding slot offsets SCS (e.g., higher-level parameters) ).

[0218] The set of parameters K1 is used to determine candidate uplink time slots, and then candidate downlink time slots are determined based on the candidate uplink time slots. A candidate downlink time slot satisfies at least one of the following conditions: (i) if the PUCCH time unit is a sub-time slot, at least one candidate downlink time slot's PDSCH reception end position overlaps in the time domain with the candidate uplink time slot; or (ii) if the PUCCH time unit is a time slot, the end position of the candidate downlink time slot overlaps in the time domain with the candidate uplink time slot. It should be noted that in the description of exemplary embodiments of this disclosure, the start symbol and start position can be used interchangeably, and the end symbol and end position can be used interchangeably. In some embodiments, the start symbol can be replaced with the end symbol, and / or the end symbol can be replaced with the start symbol.

[0219] The number of PDSCH receptions requiring HARQ-ACK feedback in a candidate downlink time slot can be determined by the maximum of the number of valid candidate PDSCH receptions that do not overlap in that downlink time slot (e.g., valid candidate PDSCH receptions can be candidate PDSCH receptions that do not overlap with semi-statically configured uplink symbols). The time domain resources occupied by candidate PDSCH receptions can be determined by (i) configuring a time domain resource allocation table (which may also be referred to as a table associated with time domain resource allocation in the description of some exemplary embodiments of this disclosure) by higher-layer signaling and (ii) dynamically indicating a row in the time domain resource allocation table by DCI. Each row in the time domain resource allocation table can define information related to time domain resource allocation. For example, for the time domain resource allocation table, the indexed row defines the timing values ​​of PDCCH and PDSCH (e.g., time unit (e.g., time slot) offset (e.g., K0)), start and length indicator (SLIV), or directly defines the start symbol and allocation length. For example, for the first row of the time-domain resource allocation table, the starting OFDM symbol is 0, and the OFDM symbol length is 4; for the second row, the starting OFDM symbol is 4, and the OFDM symbol length is 4; for the third row, the starting OFDM symbol is 7, and the OFDM symbol length is 4. The DCI for scheduling PDSCHs can indicate any row in the time-domain resource allocation table. When all OFDM symbols in a downlink time slot are downlink symbols, the maximum number of valid, non-overlapping PDSCHs in that downlink time slot is 2. In this case, the Type-1 HARQ-ACK codebook may need to feed back HARQ-ACK information for two PDSCHs in that downlink time slot of the serving cell.

[0220] [Type-2 HARQ-ACK Codebook]

[0221] In some implementations, the dynamic HARQ-ACK codebook (e.g., a Type-2 HARQ-ACK codebook) and / or enhanced dynamic HARQ-ACK codebook (e.g., a Type-2 HARQ-ACK based on packet and HARQ-ACK retransmission) can determine the size and order of the HARQ-ACK codebook according to the allocation index. For example, the allocation index can be DAI (Downlink Assignment Index). In the following embodiments, the allocation index is illustrated using DAI as an example. However, the embodiments of this disclosure are not limited to this, and any other suitable allocation index can be used. It should be noted that the method for dynamic HARQ-ACK codebooks in this disclosure can also be used to enhance dynamic HARQ-ACK codebooks.

[0222] In some implementations, the DAI includes at least one of a first DAI and a second DAI.

[0223] In some examples, the first DAI can be a C-DAI (Counter-DAI), which can be a cumulative count of the downlink allocation index. The value of the first DAI field in the DCI format is a cumulative count up to the current serving cell and up to the current time unit {serving cell, PDCCH monitoring occasion (MO)}-pair, where the time unit can be the time unit of PDCCH reception, such as the PDCCH monitoring occasion. The {serving cell, PDCCH monitoring occasion}-pair can include DCI formats with corresponding HARQ-ACK information bits for PDSCH reception scheduled by the DCI format and / or for PDSCH reception not scheduled by the DCI format. The first DAI can be included in the downlink DCI format. HARQ-ACK information for PDSCH reception scheduled by the DCI format and / or for PDSCH reception not scheduled by the DCI format is sent in the same time unit (e.g., sent on the same PUCCH in the same time unit). The second DAI can be a T-DAI (Total-DAI). The second DAI can be the total count of the downlink allocation index. The value of the second DAI field in the DCI format is the total count up to the current time unit {serving cell, PDCCH listening time} - pairs. The second DAI can be included in the downlink DCI format and / or the uplink DCI format. The second DAI included in the uplink DCI format is also referred to as the UL DAI.

[0224] In some implementations, the first DAIs can be ordered in the following order:

[0225] - First, the serving cell (e.g., the scheduled serving cell) index in ascending order.

[0226] - Second, the ascending order of the PDCCH MO index.

[0227] In some implementations, the first DAI can also be ordered in the following order: for example, if the UE reports that the capability supports more than one PDSCH reception on a serving cell scheduled by a PDCCH MO (e.g., PDSCH reception scheduled by more than one PDCCH), the first DAI can be ordered in the following order:

[0228] - First, the ascending order of the start time of PDSCH reception (e.g., for the same {serving cell, PDCCH listening time} - PDCCH reception).

[0229] Second, the ascending order of the serving cell (e.g., the scheduled serving cell) index.

[0230] - Third, the ascending order of the PDCCH MO index.

[0231] In some examples, the first DAI can indicate the cumulative count of at least one of the following: a DCI indicating scheduled PDSCH reception, a DCI indicating SPS PDSCH release (deactivation), or a DCI indicating secondary cell dormancy. For example, the cumulative count could be the cumulative count up to the current serving cell and / or the current time unit. The C-DAI can also indicate the cumulative number of {serving cell, time unit} pairs scheduled by PDCCH up to the current time unit within a time window (which may also include the number of PDCCHs (e.g., PDCCHs indicating SPS release and / or PDCCHs indicating secondary cell dormancy)); or the cumulative number of PDCCHs up to the current time unit; or the cumulative number of PDSCH transmissions up to the current time unit; or the existence of PDSCH transmissions associated with PDCCHs (e.g., scheduled by PDCCHs) and / or the existence of PDCCHs (e.g., PDCCHs indicating SPS release and / or PDCCHs indicating secondary cell dormancy) up to the current serving cell and / or the current time unit. The cumulative number of {serving cell, time unit} pairs of DCCH; or the cumulative number of PDSCHs and / or PDCCHs (e.g., PDCCHs indicating SPS release and / or PDCCHs indicating secondary cell dormancy) that the base station has scheduled up to the current serving cell and / or the current time unit; or the cumulative number of PDSCHs (where the PDSCHs are those with corresponding PDCCHs) that the base station has scheduled up to the current serving cell and / or the current time unit; or the cumulative number of time units (where the PDSCHs are those with corresponding PDCCHs) that the base station has scheduled up to the current serving cell and / or the current time unit. The order of each bit in the HARQ-ACK codebook corresponding to at least one of the following can be determined by receiving the time of the first DAI and the first DAI information: PDSCH reception, DCI indicating SPS PDSCH release (deactivation), or DCI indicating secondary cell dormancy.

[0232] In some examples, the second DAI can refer to the total count of at least one of the following: all PDSCH receptions, DCIs indicating SPS PDSCH release (deactivation), or DCIs indicating secondary cell dormancy. For example, this total count could be the total count of all serving cells up to the current time unit. For example, T-DAI could refer to: the total number of {serving cell, time unit} pairs scheduled by PDCCH up to the current time unit within the time window (which may also include the number of PDCCHs used to indicate SPS release); or the total number of PDSCH transmissions up to the current time unit; or the total number of {serving cell, time unit} pairs with PDSCH transmissions associated with PDCCH (e.g., scheduled by PDCCH) and / or with PDCCHs (e.g., PDCCHs indicating SPS release and / or PDCCHs indicating secondary cell dormancy) up to the current serving cell and / or the current time unit. Alternatively, up to the current serving cell and / or the current time unit, the total number of PDSCHs and / or PDCCHs (e.g., PDCCHs indicating SPS release and / or PDCCHs indicating secondary cell dormancy) that the base station has scheduled; or up to the current serving cell and / or the current time unit, the total number of PDSCHs (where the PDSCHs are those with corresponding PDCCHs) that the base station has scheduled; or up to the current serving cell and / or the current time unit, the total number of time units with PDSCH transmissions that the base station has scheduled (e.g., the PDSCHs with corresponding PDCCHs) that the base station has scheduled.

[0233] In the example below, we will use C-DAI as the first DAI and T-DAI as the second DAI (but not limited to) as an example (but this is not the only one).

[0234] Tables 1 and 2 show the relationship between the DAI field and... , or The correspondence between C-DAI and T-DAI is as follows. The number of bits in C-DAI and T-DAI is finite.

[0235] For example, when C-DAI or T-DAI is represented by 2 bits, the value of C-DAI or T-DAI in DCI can be determined using the formula in Table 1. or The T-DAI value is the value of the DCI format received during the PDCCH monitoring occasion (MO). The value of C-DAI in the DCI format of serving cell c received by m during PDCCH listening. and Both are related to the number of bits in the DAI field of the DCI format. MSB is the most significant bit, and LSB is the least significant bit.

[0236] [Table 1]

[0237]

[0238] For example, if C-DAI or T-DAI is 1, 5, or 9, as shown in Table 1, "00" is used in the DAI field to indicate this, and the formula in Table 1 is used to... or The value is represented as "1". Y can represent the DAI value corresponding to the number of DCI formats actually transmitted by the base station (the DAI value before conversion by the formula in the table).

[0239] For example, when C-DAI or T-DAI in the DCI format is 1 bit, a value greater than 2 can be represented by the formula in Table 2.

[0240] [Table 2]

[0241]

[0242] In some implementations, the UE can generate the HARQ-ACK codebook in the PUCCH based on pseudocode 1. For example, if the UE transmits HARQ-ACK information on a PUCCH (e.g., any PUCCH format) in time slot n, the UE determines the HARQ-ACK codebook based on pseudocode 1. HARQ-ACK information bits, where This represents the total number of HARQ-ACK information bits.

[0243] [Pseudocode 1]

[0244]

[0245]

[0246]

[0247] In some implementations, for the HARQ-ACK codebook on the PUSCH, the UE can, after completing the c and m loops in pseudocode 1 to generate the HARQ-ACK codebook, set... in, The value is UL DAI, and can be determined according to Table 1 or Table 2.

[0248] [HARQ Feedback Method]

[0249] In some implementations, whether to provide HARQ-ACK information can be configured via higher-level parameters or dynamically indicated by DCI. The method of providing (or reporting) HARQ-ACK information (HARQ-ACK feedback method or HARQ-ACK reporting method) can be at least one of the following methods.

[0250] - HARQ-ACK Feedback Method 1: Send ACK or NACK (ACK / NACK). For example, for a PDSCH reception, if the UE correctly decodes the corresponding transport block (TB), the UE sends ACK; and / or, if the UE does not correctly decode the corresponding transport block, the UE sends NACK. For example, the HARQ-ACK information bits provided by HARQ-ACK Feedback Method 1 are either ACK or NACK values.

[0251] - HARQ-ACK Feedback Method 2: NACK-only. For example, for a PDSCH reception, if the UE correctly decodes the corresponding transport block, the UE does not send HARQ-ACK information; and / or, if the UE does not correctly decode the corresponding transport block, the UE sends NACK. For example, at least one HARQ-ACK information bit in the HARQ-ACK information provided according to HARQ-ACK Feedback Method 2 is a NACK value. For example, in HARQ-ACK Feedback Method 2, the UE does not send a PUCCH that will only include HARQ-ACK information with an ACK value.

[0252] For a PDSCH reception of a HARQ process, if the UE is configured not to send back HARQ-ACK information, the HARQ-ACK codebook will not include the HARQ-ACK information received by that PDSCH.

[0253] [Channel conflict]

[0254] In some implementations, a PUSCH collision with other physical channels can be at least one of the following:

[0255] -PUSCH overlaps in the time domain with PUCCH and / or PDSCH and / or PDCCH on the same serving cell.

[0256] - In the absence of a PUSCH being configured for simultaneous transmission, the PUSCH overlaps with other PUSCHs on the same serving cell in the time domain.

[0257] - When PUSCHs are configured to be transmitted simultaneously, one PUSCH overlaps in the time domain with another PUSCH on the same serving cell that has the same control resource set (CORESET) pool index parameter (e.g., coresetPoolIndex) value.

[0258] - PUSCH and PUCCH overlap in the time domain. For example, PUSCH overlaps with PUCCH on different serving cells in the time domain, and / or the serving cell does not support simultaneous transmission of PUSCH and PUCCH.

[0259] In some implementations, PDSCH collisions with other physical channels can be at least one of the following:

[0260] - PDSCH overlaps in the time domain with other PUSCH and / or PUCCH on the same serving cell.

[0261] - In the absence of simultaneously configured PDSCH reception (e.g., the UE is not configured with different CORESET pool index parameters (e.g., coresetPoolIndex) values), the PDSCH overlaps with other PDSCHs on the same serving cell in the time domain.

[0262] - In the case where PDSCH is configured to be transmitted simultaneously (e.g., the UE is configured with different CORESET pool index parameters (e.g., coresetPoolIndex) in the PDCCH configuration parameters (e.g., PDCCH-Config) including CORESET parameters (e.g., ControlResourceSet), one PUSCH overlaps with another PUSCH on the same serving cell that has the same CORESET pool index parameter (e.g., coresetPoolIndex) value in the time domain).

[0263] - The PDSCH overlaps with the PDCCH on the same serving cell in both the time and frequency domains.

[0264] In some implementations, a PUCCH collision with other physical channels can be at least one of the following:

[0265] -PUCCH overlaps with other PUCCH and / or PUSCH in the time domain.

[0266] - The PUCCH overlaps with other PDSCHs on the same serving cell in the time domain.

[0267] In some implementations, PDCCH collisions with other physical channels can be at least one of the following:

[0268] - The PDCCH overlaps in the time domain with other PUSCH and / or PUCCH on the same serving cell.

[0269] - The PDCCH overlaps with other PDSCHs on the same serving cell in both the time and frequency domains.

[0270] In the description of exemplary embodiments of this disclosure, "a set of overlapping channels" can be understood as each channel in the set of overlapping channels overlapping (or conflicting) with at least one channel in the set other than the channel itself. The channel may include one or more PUCCHs and / or one or more PUSCHs. For example, "a set of overlapping channels" may include "a set of overlapping PUCCHs and / or PUSCHs". As a specific example, when a first PUCCH overlaps with at least one of a second PUCCH and a third PUCCH, a second PUCCH overlaps with at least one of a first PUCCH and a third PUCCH, and a third PUCCH overlaps with at least one of a first PUCCH and a second PUCCH, the first PUCCH, the second PUCCH, and the third PUCCH constitute a set of overlapping channels (PUCCHs). For example, the first PUCCH overlaps with both the second and third PUCCHs, but the second and third PUCCHs do not overlap.

[0271] In the description of exemplary embodiments of this disclosure, 'resolving overlapping channels' can be understood as resolving conflicts between overlapping channels. For example, when a PUCCH overlaps with a PUSCH, resolving the overlap or conflict may include multiplexing the UCI in the PUCCH to the PUSCH, or it may include sending a higher-priority PUCCH or PUSCH. As another example, when a PUCCH overlaps with one or more PUCCHs, resolving the overlap or conflict may include multiplexing the UCI into one PUCCH, or it may include sending a higher-priority PUCCH. As yet another example, when two PUSCHs of the same serving cell overlap, resolving the overlap or conflict may include sending the PUSCH with the higher priority of the two PUSCHs. The terms "resolving overlapping channels," "resolving overlap between channels," "determining overlap between channels," and "determining overlapping channels" are used interchangeably.

[0272] It should be noted that, unless the context clearly indicates otherwise, all or one of the methods, steps, or operations described in the embodiments of this disclosure may be configured and / or indicated by higher-level signaling and / or dynamic signaling. Dynamic signaling may be PDCCH and / or DCI and / or DCI format. For example, for SPS PDSCH and / or CG PUSCH, it may be dynamically indicated in its active DCI / DCI format / PDCCH. All or one of the described methods, steps, and operations may be optional. For example, if a parameter is configured (e.g., parameter X), the UE performs one mode (e.g., mode A); otherwise (if the parameter is not configured, e.g., parameter X), the UE performs another mode (e.g., mode B). Unless otherwise specified, parameters in the embodiments of this disclosure may be higher-level parameters. For example, higher-level parameters may be parameters configured or indicated by higher-level signaling (e.g., RRC signaling).

[0273] It should be noted that, in the description of the exemplary embodiments of this disclosure, a PCell (primary cell) or PSCell (primary secondary cell) can be used interchangeably with a cell that has a PUCCH. The serving cell can be used interchangeably with other cells.

[0274] It should be noted that, in the description of the exemplary embodiments of this disclosure, the method used for the downlink can also be applied to the uplink, and the method used for the uplink can also be applied to the downlink. For example, PDSCH can be replaced with PUSCH, SPS PDSCH can be replaced with CG PUSCH, and downlink symbols can be replaced with uplink symbols, so that the method used for the downlink can be applied to the uplink.

[0275] It should be noted that the method applicable to scheduling multiple PDSCH / PUSCHs in the description of the exemplary embodiments of this disclosure can also be applied to repeated transmissions of PDSCH / PUSCHs. For example, one of the multiple PDSCH / PUSCHs can be replaced with one repeated transmission in multiple repeated transmissions of PDSCH / PUSCHs.

[0276] It should be noted that in the methods of this disclosure, in the description of exemplary embodiments of this disclosure, being configured and / or indicating repeated transmission can be understood as the number of repeated transmissions being greater than 1. For example, "PUCCH configured and / or indicating repeated transmission" can be replaced with "PUCCH repeatedly transmitted on more than one time slot / sub-time slot". Not being configured and / or indicating repeated transmission can be understood as the number of repeated transmissions being equal to 1. For example, "PUCCH not configured and / or indicating repeated transmission" can be replaced with "PUCCH transmission with a repeated transmission count of 1". For example, the UE can configure parameters related to the number of PUCCH repeated transmissions. When this parameter A value greater than 1 indicates that the UE is configured to repeatedly transmit PUCCH, and the UE can... Repeated PUCCH transmissions occur over a time unit (e.g., a time slot); when this parameter equals 1, it may mean that the UE is not configured for repeated PUCCH transmissions. For example, a repeated PUCCH may contain only one type of UCI. If repeated PUCCH transmissions are configured, in the description of exemplary embodiments of this disclosure, one repeated PUCCH transmission among multiple repeated PUCCH transmissions may be considered as a single PUCCH (or PUCCH resource), or all repeated PUCCH transmissions may be considered as a single PUCCH (or PUCCH resource), or a specific repeated PUCCH transmission among multiple repeated PUCCH transmissions may be considered as a single PUCCH (or PUCCH resource).

[0277] It should be noted that, in the description of the exemplary embodiments of this disclosure, a PDCCH and / or DCI and / or DCI format scheduling multiple PDSCH / PUSCH can be multiple PDSCH / PUSCH of the same serving cell and / or multiple PDSCH / PUSCH of different serving cells.

[0278] It should be noted that in the exemplary embodiments of this disclosure, multiple methods can be combined in any order. In a combination, a method can be executed once or multiple times, or a method can be not executed.

[0279] It should be noted that the steps in the method disclosed herein can be performed in any order.

[0280] It should be noted that, in the description of the exemplary embodiments of this disclosure, "cancel transmission" can mean canceling the transmission of the entire uplink channel and / or canceling the transmission of a portion of the uplink channel.

[0281] It should be noted that in the description of the exemplary embodiments of this disclosure, "order from smallest to largest" (e.g., ascending order) can be replaced with "order from largest to smallest" (e.g., descending order), and / or "order from largest to smallest" (e.g., descending order) can be replaced with "order from smallest to largest" (e.g., ascending order).

[0282] It should be noted that, in the description of the exemplary embodiments of this disclosure, a PUCCH / PUSCH carrying / having / including A can be understood as carrying / having / including only a PUCCH / PUSCH carrying / having / including A, or it can be understood as carrying / having / including at least a PUCCH / PUSCH carrying / having / including A.

[0283] It should be noted that in the description of the exemplary embodiments of this disclosure, "time slot" can be replaced by "sub-time slot" or "time unit".

[0284] It should be noted that, in the description of the exemplary embodiments of this disclosure, the time interval (or time unit interval) between the first physical channel and the second physical channel can be understood as the time interval (or time unit interval) between the end position (or end symbol) of the first physical channel and the start position (or start symbol) of the second physical channel, wherein the first physical channel is earlier than the second physical channel. Alternatively, it can be the time interval (or time unit interval) between the time unit in which the first physical channel is located and the time unit in which the second channel is located. The time unit in which a physical channel is located can 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 start position (or start symbol) of the physical channel. In the description of the exemplary embodiments of this disclosure, the following descriptions can be used interchangeably:

[0285] - The time interval between the first physical channel and the second physical channel is the first time.

[0286] - The time interval from the first physical channel to the second physical channel is the first time.

[0287] - The time interval from the second physical channel to the first physical channel is the first time.

[0288] - The first physical channel is earlier than the first time of the second physical channel.

[0289] - The first physical channel is later than the first time of the second physical channel.

[0290] -The second physical channel is earlier than the first physical channel.

[0291] -The second physical channel is later than the first physical channel at the first time.

[0292] In the description of exemplary embodiments of this disclosure, the following descriptions may be used interchangeably:

[0293] - The time interval between the first physical channel and the second physical channel is greater than (or not less than) the first time.

[0294] - The time interval from the first physical channel to the second physical channel is greater than (or not less than) the first time.

[0295] - The time interval from the second physical channel to the first physical channel is greater than (or not less than) the first time.

[0296] - The first physical channel is earlier than the second physical channel and is greater than (or not less than) the first time.

[0297] - The first physical channel is later than the second physical channel, which is greater than (or not less than) the first time.

[0298] - The second physical channel is earlier than the first physical channel and is greater than (or not less than) the first time.

[0299] - The second physical channel is later than the first physical channel by a time greater than (or not less than) the first time.

[0300] - The first symbol of the first physical channel is not earlier than symbol L, and symbol L can be defined as the next symbol whose start time is later than the last symbol of the second channel.

[0301] - The first symbol of the second physical channel is not earlier than symbol L, and symbol L can be defined as the next symbol whose start time is later than the last symbol of the first channel.

[0302] It should be noted that in the description of the exemplary embodiments of this disclosure, "greater than (or not less than)" can be replaced with "less than (or not greater than)".

[0303] It should be noted that, in the description of timing relationships (or time relationships) in the exemplary embodiments of this disclosure, "physical channel" can be understood as "the start time of the physical channel," "the first symbol of the physical channel," or "the start time of the first symbol of the physical channel," and these terms can be used interchangeably. "Physical channel" can also be understood as "the end time of the physical channel," "the last symbol of the physical channel," and "the end time of the last symbol of the physical channel," and these terms can be used interchangeably.

[0304] It should be noted that, in the exemplary embodiments of this disclosure, the physical uplink channel time can be the actual time when the UE transmits the physical uplink channel, for example, taking into account the TA (time advance) time.

[0305] It should be noted that, in the description of the exemplary embodiments of this disclosure, "if the predefined conditions are met, execute the predefined method (or steps)" and "if the predefined conditions are not met, do not execute the predefined method (or steps)" can be used interchangeably.

[0306] It should be noted that, in the description of the exemplary embodiments disclosed herein, the terms "configured a parameter (or information)," "provided a parameter (or information)," "configured a parameter to a specific value (e.g., enabled)," and "received a parameter (or information)" are used interchangeably. Configuring one or more parameters can mean configuring a parameter list in an IE, which contains one or more of the parameters. Configuring multiple parameters can also mean configuring the parameters separately in multiple IEs.

[0307] It should be noted that, in the description of the exemplary embodiments of this disclosure, "parameter A is configured by higher-level signaling and / or reported by UE capability" can be understood as the value of parameter A being configured by higher-level signaling, or the UE being able to report the value of parameter A through UE capability (e.g., the supported value of parameter A), or the value of parameter A being configured by higher-level signaling based on the value of parameter A reported by UE capability (i.e., the base station can consider the UE capability to configure the value of parameter A).

[0308] It should be noted that in the description of the exemplary embodiments of this disclosure, "PUCCH carrying HARQ-ACK information" and "PUCCH including HARQ-ACK information" can be used interchangeably.

[0309] It should be noted that in the description of the exemplary embodiments of this disclosure, "HARQ-ACK", "HARQ-ACK feedback", "HARQ-ACK information", "HARQ-ACK information bits" and "HARQ-ACK codebook" can be used interchangeably.

[0310] It should be noted that in the description of the exemplary embodiments of this disclosure, "determine the HARQ-ACK information bits" and "generate the HARQ-ACK information bits" can be used interchangeably.

[0311] It should be noted that, in the description of the exemplary embodiments of this disclosure, "uplink" and "uplink channel" can be used interchangeably, "downlink" and "downlink channel" can be used interchangeably, "channel," "channel transmission," "physical channel," and "physical channel transmission" can be used interchangeably, "physical channel," "physical channel resource," and "resource" can be used interchangeably, "PUCCH" and "PUCCH resource" can be used interchangeably, and "PUSCH" and "PUSCH resource" can be used interchangeably. "Channel" and "signal" can be used interchangeably.

[0312] It should be noted that, in the description of the exemplary embodiments of this disclosure, the overlap of two or more physical channels may be in the time domain and / or in the frequency domain.

[0313] It should be noted that, in the description of the exemplary embodiments of this disclosure, the methods applicable to RRC parameters can also be used for MAC CE, and vice versa.

[0314] It should be noted that the embodiments disclosed herein can be applied to one serving cell or multiple serving cells.

[0315] It should be noted that the embodiments of this disclosure can be applied to one BWP or multiple BWPs. The BWP can be a DL BWP and / or a UL BWP.

[0316] It should be noted that in the description of exemplary embodiments of this disclosure, "first and second" and "two" can be used interchangeably. For example, "first channel and second channel" can refer to two channels. In the description of exemplary embodiments of this disclosure, "first and second" can also refer to two or more channels. For example, "first channel and second channel" can also refer to two or more channels.

[0317] It should be noted that in the description of the exemplary embodiments of this disclosure, the behavior of the UE (or base station) and the conditions for the corresponding UE (or base station) behavior can be used interchangeably. For example, "UE receives (or is configured) first information (or parameters)" and "if the UE is configured with first information (or parameters)" can be used interchangeably.

[0318] It should be noted that receiving information carried by a DCI format can be understood as detecting a DCI format that carries that information.

[0319] It should be noted that in the exemplary embodiments of this disclosure, the terms "index", "identifier", "identifier" and "number" can be used interchangeably.

[0320] It should be noted that in the embodiments of this disclosure, satisfying a condition can be understood as at least satisfying that condition. That is, the condition and other conditions can be satisfied simultaneously. For example, in the embodiments of this disclosure, "satisfying a specific condition" can be replaced with "at least satisfying a specific condition".

[0321] It should be noted that the UE can support the methods described in the embodiments of this disclosure through capability reporting, and / or can enable the methods described in the embodiments of this disclosure through higher-layer signaling parameters.

[0322] It should be noted that, in the description of the exemplary embodiments of this disclosure, a beam can be understood as a Transmission Configuration Indicator (TCI) status / reference signal / channel / spatial relationship; or a TCI status ID / reference signal ID / channel ID / spatial relationship ID; or a spatial filter associated with the TCI status / reference signal / channel / spatial relationship; or a spatial filter associated with the TCI status ID / reference signal ID / channel ID / spatial relationship ID. In the exemplary embodiments of this disclosure, the following descriptions can be used interchangeably:

[0323] - Beam;

[0324] - Spatial filter;

[0325] - Spatial domain filter;

[0326] - Spatial domain transmission filter;

[0327] - Spatial settings;

[0328] - Quasi-co-location (QCL) assumption;

[0329] -QCL parameter (QCL type (qcl-Type) (e.g., type D (typeD) parameter / reference signal);

[0330] -TCI status;

[0331] - Unified TCI state;

[0332] -Spatial relationships;

[0333] -RS (reference signal);

[0334] - Information related to the sounding reference signal (SRS) (e.g., SRS resource indication (SRI)).

[0335] In some implementations, the RS can be a beam-specific RS. For example, the RS can be a CSI-RS or an SSB.

[0336] In some examples, the UE can 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 (SRS resource set index parameter value equal to 0) may correspond to a CORESET pool index parameter value equal to 0, and the other SRS resource set (SRS resource set index parameter value equal to 1) may correspond to a CORESET pool index parameter value equal to 1.

[0337] In embodiments of this disclosure, "panel" may refer to a set of antenna ports or an antenna group. An uplink transmission configuration indicator (TCI) for each antenna panel may be used to indicate the beam used for that antenna panel, which may be a beam associated with an indicated reference signal ID. An SRS set ID may be used to indicate an antenna panel ID, wherein each antenna panel is associated with an SRS set.

[0338] Continue to refer to Figure 7 In operation S710, the UE can receive first information from the base station, where the first information can be downlink control signaling. For example, the first information can be configuration information carried via higher-layer signaling. The first information can be used to indicate configuration information related to second and / or fourth information, where the second information can instruct (or notify) the UE to send (e.g., the UE wants to send; the UE intends to send; the UE needs to send; the UE initiates transmission; or it is necessary to send due to various events or reasons) the fourth information; the fourth information can include a report (or transmission) of beam-related information. In some implementations, the second information can include positive or negative second information. For example, positive second information can instruct the UE to send (e.g., the UE wants to send; the UE intends to send; the UE needs to send; the UE initiates transmission; or it is necessary to send due to various events or reasons) the fourth information. For example, negative second information can instruct the UE not to send the fourth information. For example, the first information can be CSI report configuration (e.g., higher-layer parameter CSI-ReportConfig).

[0339] In some implementations, the fourth information may also include at least one of uplink data, HARQ-ACK information, CSI report, or other UCI information.

[0340] In some implementations, the first information can also be used to indicate that the CSI report configuration can be a UE-initiated (UEI) or event-driven beam report (BR) or CSI report. For example, the first information can be configured in the CSI report configuration. In this document, the CSI report configuration can be a CSI report configuration for UE-initiated CSI reporting. In this document, UE-initiated CSI reporting can be considered as: event-driven CSI reporting. In this document, UE-initiated CSI reporting can be: UE-initiated beam reporting, or UE-initiated L1-RSRP / L1-SINR reporting.

[0341] In some implementations, the fourth information may be a UE-initiated (UEI) or event-driven beam report (BR). The fourth information may be a CSI report for a UE-initiated or event-driven beam report. The fourth information may be an L1-RSRP and / or L1-SINR report. The fourth information may include beam information desired by the UE, or information about the RS corresponding to the desired beam. The fourth information may include TCI status information desired by the UE, or information about the RS corresponding to the desired TCI status. The fourth information may include a CRI (CSI-RS Resource Indicator) and / or an SSBRI (SS / PBCH Block Resource Indicator).

[0342] In some implementations, the second information can be a UCI type different from SR, LRR, HARQ-ACK, and CSI. For example, the second information can be an uplink transmission indication, a UEI-BR transmission indication, or a beam indication triggered by the UE.

[0343] In some implementations, the beam-related information can be at least one of the following:

[0344] -CSI Report

[0345] - Beam Management Information

[0346] - Beam measurement information

[0347] -BFR (beam failure recovery)

[0348] -CRI and / or SSBRI

[0349] As some examples, beam management information can refer to information related to beam management.

[0350] As some examples, beam measurement information can refer to information related to beam measurement.

[0351] As some examples, BFR can refer to information related to the BFR process.

[0352] It should be noted that the "CSI report," "beam management information," "beam measurement information," and "BFR" described above are merely examples of beam-related information. The exemplary embodiments of this disclosure are equally applicable to other beam-related information.

[0353] It should be noted that although "CSI report," "beam management information," "beam measurement information," "BFR," and "UEI-BR" are described separately, it will be understood that one of them can be included in another as fourth information. For example, at least one of "beam management information," "beam measurement information," "BFR," and "UEI-BR" can be included in the CSI report as fourth information. Therefore, in exemplary embodiments of this disclosure, a CSI report may also refer to a CSI report that includes at least one of beam management information, beam measurement information, UEI-BR, or BFR.

[0354] In the exemplary embodiments of this disclosure below, for ease of explanation, UEI-BR may be used as an example of beam-related information. However, it will be understood that “UEI-BR” can be replaced with other beam-related information or CSI reports.

[0355] In some implementations, beam-related information can be beam-related information triggered by the UE. For example, beam-related information can be a CSI report triggered by the UE. For example, beam-related information can be a UEI-BR.

[0356] In some implementations, the fourth information may include a report (or transmission) of one or more beam-related information. For example, the fourth information may include a report (or transmission) of one or more beam-related information within a time unit and / or within a PUCCH or PUSCH.

[0357] Return to reference Figure 7During operation S720, the UE can determine to send second and / or fourth information based on the fulfillment of specific conditions or the occurrence of specific events. For example, for a CSI report configuration, the UE can determine to send the second and / or fourth information associated with the CSI report configuration based on the fulfillment of specific conditions or the occurrence of specific events.

[0358] In operation S730, the UE sends second information. For example, the UE can send the second information within an uplink time unit. For example, the UE sends a first PUCCH or a first PUSCH carrying the second information. For example, the UE sends the second information or sends a first PUCCH or a first PUSCH carrying the second information when certain conditions are met. The first PUCCH or first PUSCH resource can be configured in the CSI report configuration parameters. In the embodiments of this disclosure, the first PUCCH is used as an example for illustration. The first PUCCH can be replaced with other uplink physical channels, such as the first PUSCH.

[0359] During operation S710, the UE can also detect a DCI format (e.g., a first DCI format), wherein the DCI format (e.g., the first DCI format) can indicate the physical uplink channel carrying the CSI report configured by the CSI report, and the DCI format is received and carried by a PDCCH. The physical uplink channel can be a second PUCCH or a second PUSCH.

[0360] As used in this disclosure, RS can be CSI-RS and / or SSB. RS can be replaced with RS resource.

[0361] Optionally, the first PUCCH (e.g., the first PUCCH carrying second information in operation S730, as described above) may be event-triggered. In this document, the term "event" may be used interchangeably with the terms "condition" or "condition of an event." In this document, an event may include at least one of the following: Type 1 event (Event-1), Type 2 event (Event-2), and Type 3 event (Event-3) (in embodiments of this disclosure, "Type 3 event" may be replaced with "Type 7 event" (Event-7)). 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 parameters included in the CSI report configuration (e.g., eventType-r19). For example, the base station may configure at least one of Type 1, Type 2, and Type 3 events. Optionally, the UE may send the first PUCCH based on the configured event. In this document, the quantity associated with the reference signal is exemplified by L1-RSRP. The quantities related to the reference signal can also be other types, such as L1-SINR, CQI, and Reference Signal Received Quality (RSRQ). In this paper, these quantities can be referred to as L1 quantities. In this paper, the UE can obtain the reference signal-related quantities through measurement. The quantities obtained by the UE through measurement can be referred to as measured quantities. In this paper, the UE can report the reference signal-related quantities based on the measurement to the base station. The quantities reported by the UE to the base station can be referred to as reported quantities.

[0362] A Type 1 event can be defined as: the quality of the current beam (e.g., L1-RSRP) is worse than a first threshold. For example, the L1-RSRP of the reference signal resource associated with the indicated TCI state is less than or equal to the first threshold.

[0363] A Type 2 event can be defined as: the quality of at least one new beam (e.g., L1-RSRP) becomes better than the current beam by a second threshold. For example, the comparison of the quality of at least one new beam (e.g., L1-RSRP) with the quality of the current beam is greater than or equal to the second threshold. For example, the comparison of the L1-RSRP of at least one resource in the resource set with the L1-RSRP of a reference signal associated with the indicated TCI state is greater than or equal to the second threshold.

[0364] A Type 3 event can be defined as follows: the quality of at least one new beam (e.g., L1-RSRP) becomes better than a third threshold than the Q-th best quality reference signal associated with the activated TCI state (e.g., derived). For example, the comparison of the quality of at least one new beam (e.g., L1-RSRP) with the quality of the Q-th best quality reference signal associated with the activated TCI state is greater than or equal to the third threshold. For example, the comparison of the L1-RSRP of at least one resource in the resource set with the L1-RSRP of the reference signal with the Q-th highest L1-RSRP among the reference signals associated with the activated TCI state is greater than or equal to the third threshold. Q can be configured via higher-layer signaling (e.g., RRC signaling) and / or reported by UE capabilities. The UE can indicate candidate values ​​for Q (e.g., a single candidate value) or whether it supports Type 3 events via UE capabilities.

[0365] In this document, a TCI state may include parameters configuring a quasi-co-location relationship. These 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 the PDSCH, the DM-RS port of the PDCCH, or the CSI-RS port of the CSI-RS resource. Optionally, the quasi-co-location relationship is configured by higher-layer parameters (e.g., qcl-Type1) for the first downlink reference signal. Optionally, the quasi-co-location relationship is configured by higher-layer parameters (e.g., qcl-Type2) for the second downlink reference signal. For the case of two downlink reference signals, the QCL type should not be the same, regardless of whether the references are the same or different downlink reference signals.

[0366] In this document, the TCI state can be a reference signal for quasi-co-addressing, used to provide DM-RS for PDSCH in a BWP / CC, DM-RS for PDCCH in a BWP / CC, and CSI-RS (e.g., CSI-RS on a serving cell), and, if applicable, a reference for determining the uplink transmit spatial filter. Optionally, the uplink transmit spatial filter can be for dynamically licensed and configuration-licensed PUSCH and PUCCH resources and SRS.

[0367] In this document, the indicated TCI state is used for downlink channel / downlink signal reception, and / or for uplink channel / uplink signal transmission. The indicated TCI state can be obtained through the following methods.

[0368] The UE can receive / apply an indication of the TCI state. For example, the indication of the TCI state can come from the base station. Optionally, the UE can obtain the indicated TCI state through the indication of the TCI state. The TCI state can be indicated by at least one of the following signaling: RRC, MAC-CE, DCI. Optionally, the indicated TCI state can be obtained by at least one of the following: RRC, MAC-CE, DCI. Optionally, the UE can obtain the configured TCI state by receiving RRC signaling related to the TCI state. Optionally, the UE can obtain the activated TCI state by receiving MAC-CE signaling. Optionally, the activated TCI state comes from the configured TCI state, or the activated TCI state is at least one of the configured TCI states, or the activated TCI state is a subset of the configured TCI states. Optionally, the UE can obtain the indicated TCI state by receiving DCI. Optionally, the indicated TCI state is derived from an activated TCI state, or the indicated TCI state is at least one of the activated TCI states.

[0369] Optionally, the UE may receive an RRC, wherein the RRC may indicate / include configuration information for configuring TCI states. Optionally, the UE may receive configuration information for configuring TCI states. For example, the configuration information for configuring TCI states may be dl-OrJointTCI-StateList. Optionally, the configuration information for configuring TCI states may be in higher-level parameters (e.g., PDSCH-Config) used to configure UE-specific PDSCH parameters. Optionally, the configuration information for configuring TCI states 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-level parameters associated with the TCI state. Optionally, the UE applies the indicated TCI after receiving the configuration information for configuring TCI states.

[0370] Optionally, the UE can receive PDCCH configuration information for configuring the PDCCH. Optionally, this PDCCH configuration information can be used to monitor the DCI, where the DCI may include a field indicating the TCI state. This field may be called the TCI field. The size of the TCI field can be predefined or indicated by the base station. For example, the size of the TCI field can be 1 bit, 2 bits, or 3 bits. The TCI field can correspond to several code points, which may be called TCI code points. Optionally, the indicated TCI state can be indicated through the TCI field. For example, the UE can obtain the code point corresponding to the value of the TCI field in the DCI by detecting the DCI. The UE can determine the indicated TCI state based on the TCI state corresponding to the code point.

[0371] The mapping relationship between TCI code points and one or more configured TCI states (e.g., M TCI states) can be indicated by MAC-CE. Optionally, the UE can receive MAC-CE from the base station. Optionally, MAC-CE can activate / indicate one or more TCI states, or MAC-CE can activate / indicate one or more pairs of TCI states. Optionally, MAC-CE can be used to map one or more TCI code points to TCI states. The TCI state indicated / activated by MAC-CE can be referred to as the activated TCI state. Optionally, the activated TCI state is at least one of the M configured TCI states. If MAC-CE maps only a TCI state to a TCI code point, the UE applies the TCI state corresponding to that code point. If MAC-CE maps only a TCI state to a TCI code point, the TCI state corresponding to that code point is the indicated TCI state.

[0372] Optionally, a code point can be mapped to a TCI state. For example, a code point can be mapped to a joint TCI state. Optionally, the joint TCI state can be for both downlink channel / signal (DLTCI state for DL ​​channel / signal) and uplink channel / signal (UL TCI state for UL channel / signal). Optionally, a code point can be mapped to a TCI state pair. A TCI state pair can include a downlink TCI state and an uplink TCI state. Optionally, the downlink TCI state is for the downlink channel / signal (DL TCI state for DL ​​channel / signal). Optionally, the uplink TCI state is for the uplink channel / signal (UL TCI state for UL channel / signal).

[0373] The UE can obtain the indicated TCI state through the above method. The UE can obtain an indicated TCI state. The UE can use / apply the indicated TCI state to receive downlink channels / downlink signals, and / or transmit uplink channels / uplink signals. The UE can use / apply the indicated first TCI state and / or the indicated second TCI state to receive downlink channels / downlink signals, and / or transmit uplink channels / uplink signals.

[0374] In this document, the UE applies the indicated TCI state carried by the DCI when at least one of the following conditions is met: 1) The UE is configured with the dl-OrJointTCI-StateList parameter; 2) The UE will transmit HARQ-ACK information corresponding to the DCI; optionally, the HARQ-ACK information is a 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 TCI state. 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 least 100 symbols after the last symbol of the UL channel carrying the HARQ-ACK information. (information). Here, 𝑏𝑒𝑎𝑚𝐴𝑝𝑝𝑇𝑖𝑚𝑒 is a parameter that defines the minimum delay, in symbols, from the end of a PUCCH or PUSCH transmission to the application of a new TCI state. This parameter ensures sufficient time to process and prepare for a new transmission before applying a new TCI state. Optionally, 𝑏𝑒𝑎𝑚𝐴𝑝𝑝𝑇𝑖𝑚𝑒 can be predefined or indicated by the base station. The value of 𝑏𝑒𝑎𝑚𝐴𝑝𝑝𝑇𝑖𝑚𝑒 can be one of 1, 2, 3, 4, 14, 28, 42, 56, 70, 84, 98, 112, 224, or 336.

[0375] In this document, the indicated TCI state can be applied to one or more serving cells. The indicated TCI state can be applied to one or more BWPs within a serving cell.

[0376] In this paper, the activated TCI state can be applied to one or more serving cells. The activated TCI state can be applied to one or more BWPs in a serving cell.

[0377] The UE needs to perform measurements against a reference signal in order to initiate / determine / report CSI. For example, the UE sends second and / or fourth information based on measurements of the reference signal. Optionally, the UE can acquire reference signal resources for the measurement. Optionally, the UE can acquire reference signal resources for the measurement through CSI report configuration. Optionally, the measurement can be a channel measurement and / or an interference measurement. The reference signal resources used for the measurement can be: reference signal resources used for link quality assessment. Optionally, the reference signal resources used for the measurement include: reference signal resources associated with the CSI report configuration, and / or, reference signal resources associated with the indicated TCI state, and / or, reference signal resources associated with the activated TCI state.

[0378] Optionally, the reference signal resources associated with the CSI report configuration may include: reference signal resources indicated / configured by the CSI report configuration. Optionally, the CSI report configuration may indicate / configure / associate / correspond to K resources, where K≥1. Optionally, the CSI report configuration may indicate / configure / associate / correspond to a resource set, wherein the resource set includes K resources, where K≥1. Optionally, the resource set can be configured using the `newBeamResourceSetEvent2-r19` parameter in the CSI report configuration. This parameter can be used to configure the resource set. Optionally, the serving cell of the resources in the resource set can be indicated by the base station, or it can be predefined. For example, the serving cell of the resources in the resource set is configured by the `carrier` parameter in the CSI report configuration. This parameter can be used to indicate the serving cell of the resource set. If the `carrier` parameter is not configured in the CSI report configuration, then the serving cell of the resources in the resource set is the serving cell of the CSI report configuration. Optionally, the resource set can be a new beam resource set. Optionally, the resource set can be used for configuring new beams. Optionally, the resource set can be used for measurement, and / or for link quality assessment. Optionally, the measurement can be channel measurement and / or interference measurement. Optionally, the reference signals in the resource set are of the same type. Optionally, the types of reference signals include: SSB, CSI-RS. Optionally, the types of CSI-RS include: reference signals for tracking, reference signals for beam management, and reference signals for CSI acquisition. Optionally, when the reference signal resource is a CSI-RS resource, the resource associated with the CSI report configuration can be periodic / semi-persistent.

[0379] Optionally, the reference signal associated with the indicated TCI state can be: the reference signal corresponding to the indicated TCI state. Optionally, the reference signal associated with the indicated TCI state can be at least one of the following: Mode #1) a quasi-co-addressable SSB with the QCL reference signal of the indicated TCI state; Mode #2) the QCL reference signal of the indicated TCI state. Optionally, a TCI state can be associated with / include / correspond to one or two QCL reference signals. Optionally, if a TCI state is associated with / includes / corresponds to two QCL reference signals, then the reference signal associated with the TCI state is the reference signal of QCL type D among the two QCL reference signals.

[0380] Optionally, the reference signal resource associated with the indicated TCI state can be determined based on method #1 or method #2. Optionally, method #1 or method #2 can be indicated by the base station. For example, parameters included in the CSI report configuration indicate method #1 or method #2. Optionally, the reference signal resource associated with the indicated TCI state can be determined based on the reference signal resource associated with the CSI report configuration. Optionally, the reference signal resource associated with the indicated TCI state can be determined based on the type of the reference signal resource associated with the CSI report configuration. Optionally, if the resource in the resource set is an SSB resource, the reference signal associated with the indicated TCI state is determined using method #1. If the resource in the resource set is a CSI-RS resource (e.g., a reference signal resource with a repetition parameter), the reference signal associated with the indicated TCI state is determined based on method #2.

[0381] Optionally, the type of the reference signal associated with the indicated TCI state is the same as the type of the reference resource included in the resource set.

[0382] Optionally, the reference signal associated with the indicated TCI state and the reference resource included in the resource set may be an SSB. Optionally, when the reference signal associated with the indicated TCI state and / or the reference signal in the resource set is an 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 allows the UE to compare measurement results for SSBs from the same physical cell, so that the UE can initiate CSI reporting for that physical cell.

[0383] In some cases, a UE can be configured with one or more serving cells / BWPs, each with different indicated TCI states. It needs to be clearly defined which indicated TCI state is used for event detection. The following methods can prevent the UE from initiating CSI using incorrect indicated TCI states, thus improving the reliability of the communication system. Optionally, the indicated TCI state is an indicated TCI state associated with a specific serving cell, or an indicated TCI state associated with a specific BWP within a specific serving cell. For example, the indicated TCI state used to initiate CSI (or, for reporting CSI, or for event determination, or for event association) can be: an indicated TCI state associated with a specific serving cell, or an indicated TCI state associated with a specific BWP within 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 reporting configuration. For example, when the CSI report configuration includes this parameter (e.g., carrier), the specific serving cell is indicated by this parameter. For example, when the CSI report configuration does not include this parameter (e.g., carrier), the specific serving cell is the serving cell where the CSI report configuration is located. For example, the specific serving cell is the serving cell where a resource in the resource set is located. The method for determining the serving cell where a resource in the resource set is located is described above. Optionally, the specific BWP can be indicated by the base station, or the specific BWP can 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 this parameter, the specific BWP is indicated by this 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 may be 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 can be indicated by the parameter ServingCellAndBWP-Id. This parameter can be used to indicate the serving cell ID and the BWP ID. Here, a BWP can be a downlink BWP. A predefined BWP can be: an active BWP, an initial BWP, a default BWP, the BWP with the smallest ID, or the BWP with the largest ID.

[0384] In this document, the indicated TCI state associated with a specific serving cell refers to the indicated TCI state applied / used on the specific serving cell. In this document, the indicated TCI state associated with a specific BWP refers to the indicated TCI state applied / used on the specific BWP.

[0385] Optionally, the indicated TCI state refers to the most recent indicated TCI state prior to the first PUCCH. Optionally, the indicated TCI state refers to the most recent indicated TCI state prior to the reference resource associated with the first PUCCH. Optionally, the indicated TCI state refers to the most recent indicated TCI state prior to the second uplink channel. Optionally, the indicated TCI state refers to the most recent indicated TCI state prior to the CSI reference resource corresponding to the CSI report carried by the second uplink channel. Since the indicated TCI state can be time-varying, this method can clearly identify which indicated TCI state can be used for CSI initiation or event determination, preventing the UE from using incorrect indicated TCI states to trigger CSI or determine events, thus improving UE reliability.

[0386] It should be noted that the most recently indicated TCI state can be the TCI state indicated in the most recent PDCCH reception, or the TCI state indicated by the DCI format in the most recent PDCCH reception. The most recently indicated TCI state can also be the most recently indicated TCI state prior to the fourth time interval before the first PUCCH. The fourth time interval can be specified by higher-layer signaling configuration and / or UE capability reporting and / or protocols. The most recently indicated TCI state can also be an active (or applied) TCI state.

[0387] Optionally, the reference signal associated with the activated TCI state can be: the reference signal corresponding to the activated TCI state. Optionally, the reference signal associated with the activated TCI state can be at least one of the following: mode #3) a quasi-co-addressable SSB with the QCL reference signal of the activated TCI state; mode #4) the QCL reference signal of the activated TCI state. Optionally, a TCI state can be associated with / include / correspond to one or two QCL reference signals. Optionally, if a TCI state is associated with / includes / corresponds to two QCL reference signals, then the reference signal associated with the TCI state is the reference signal of QCL type D among the two QCL reference signals.

[0388] Optionally, the reference signal resource associated with the activated TCI state can be determined based on method #3 or method #4. Optionally, method #3 or method #4 can be indicated by the base station. For example, parameters included in the CSI report configuration indicate method #3 or method #4. Optionally, the reference signal resource associated with the activated TCI state can be determined based on the reference signal resource associated with the CSI report configuration. Optionally, the reference signal resource associated with the activated TCI state can be determined based on the type of reference signal resource associated with the CSI report configuration. Optionally, if the resource in the resource set is an SSB resource, the reference signal associated with the activated TCI state is determined using method #3. If the resource in the resource set is a CSI-RS resource (e.g., a reference signal resource with a repeating parameter), the reference signal associated with the activated TCI state is determined based on method #4.

[0389] Optionally, the reference signals associated with the activated TCI states are of the same type. For example, one or more TCI states activated by MAC-CE signaling are associated with reference signals of the same type. Optionally, the type of the reference signals associated with the activated TCI states is the same as the type of the reference resources included in the resource set.

[0390] Optionally, the reference signal associated with the activated TCI state and the reference resource included in the resource set may be an SSB. Optionally, when the reference signal associated with the activated TCI state and / or the reference signal in the resource set is an 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 allows the UE to compare measurement results for SSBs from the same physical cell, so that the UE can initiate CSI reporting for that physical cell.

[0391] In some cases, a UE can be configured with one or more serving cells, each with different activated TCI states. It is necessary to specify which activated TCI state is used for event detection. The following methods can prevent the UE from initiating CSI using the wrong activated TCI state, thus improving the reliability of the communication system. Optionally, the activated TCI state is an activated TCI state associated with a specific serving cell, or an activated TCI state associated with a specific BWP within a specific serving cell. For example, the activated TCI state used to initiate CSI (or, to report CSI, or, for event determination, or for event association) could be: an activated TCI state associated with a specific serving cell, or an activated TCI state associated with a specific BWP within 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 reporting configuration. For example, when the CSI report configuration includes this parameter (e.g., carrier), the specific serving cell is indicated by this parameter. For example, when the CSI report configuration does not include this parameter (e.g., carrier), the specific serving cell is the serving cell where the CSI report configuration is located. For example, the specific serving cell is the serving cell where a resource in the resource set is located. The method for determining the serving cell where a resource in the resource set is located is described above. Optionally, the specific BWP can be indicated by the base station, or the specific BWP can 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 this parameter, the specific BWP is indicated by this 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 may be 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 can be indicated by the parameter ServingCellAndBWP-Id. This parameter can be used to indicate the serving cell ID and the BWP ID. Here, a BWP can be a downlink BWP. A predefined BWP can be: an active BWP, an initial BWP, a default BWP, the BWP with the smallest ID, or the BWP with the largest ID.

[0392] In this document, the activated TCI state associated with a specific serving cell refers to either the activated TCI state on the specific serving cell, or the activated TCI state applied / used on the specific serving cell. Similarly, the activated TCI state associated with a specific BWP refers to either the activated TCI state on the specific BWP, or the activated TCI state applied / used on the specific BWP.

[0393] Optionally, the activated TCI state refers to the most recent activated TCI state prior to the first PUCCH. For example, at least one activated TCI state among A activated TCI states (or, each activated TCI state) is the most recent activated TCI state prior to the first PUCCH. Optionally, the activated TCI state refers to the most recent activated TCI state prior to the reference resource associated with the first PUCCH. For example, at least one activated TCI state among A activated TCI states (or, each activated TCI state) is the most recent activated TCI state prior to the reference resource associated with the first PUCCH. Optionally, the activated TCI state refers to the most recent activated TCI state prior to the second uplink channel. For example, at least one activated TCI state among A activated TCI states (or, each activated TCI state) is the most recent activated TCI state prior to the second uplink channel. Optionally, the activated TCI state refers to the most recent activated TCI state prior to the CSI reference resource corresponding to the CSI report carried by the second uplink channel. For example, at least one of the A activated TCI states (or, each activated TCI state) is the most recent activated TCI state preceding the CSI reference resource corresponding to the second uplink channel. Since the activated TCI states are time-varying, this method can clearly identify which activated TCI states can be used for CSI initiation or event determination, preventing the UE from using incorrect activated TCI states to trigger CSI or determine events, thus improving UE reliability.

[0394] Optionally, the first PUCCH may be triggered by comparing the L1-RSRP of the reference signal resource associated with the indicated TCI state with a first threshold. Optionally, the first PUCCH may be triggered by comparing the difference between the L1-RSRP of the reference signal resource associated with the indicated TCI state and the L1-RSRP of resources in the resource set with a configured second threshold. Optionally, the first PUCCH may be triggered by comparing the difference between the L1-RSRP of the reference signal resource associated with the activated TCI state and the L1-RSRP of resources in the resource set with a 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, where Q≥1. Here, the activated TCI state may be one or more activated TCI states, wherein each activated TCI state is associated with a reference signal. Optionally, the second and third thresholds may be indicated by the same parameter. Optionally, the L1-RSRP may be a measured L1-RSRP.

[0395] In this paper, a UE can have A TCI states activated, where A ≥ 1. For example, a UE can have A TCI states activated by MAC-CE. The number of activated TCI states can be represented by A.

[0396] Since the number of activated TCI states is determined based on the MAC-CE indication, 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 this situation, the UE's behavior is unclear, leading to the incorrect detection of corresponding events. The method proposed below can avoid the incorrect detection of events and improve the reliability of the communication system.

[0397] 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 avoids situations where events cannot be detected due to the number of activated TCI states being less than Q, thus improving the reliability of the communication system. Optionally, Q is determined based on the base station's indication and the number of activated TCI states. Optionally, Q is equal to the smaller of the value indicated by the base station (e.g., the value indicated by valueOfQ-r19) and the number of activated TCI states. Optionally, 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), Q is equal to the number of activated TCI states. Optionally, 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), Q is equal to a predefined value. Optionally, this predefined value can 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 avoids situations where events cannot be detected due to the number of activated TCI states being less than the value of Q indicated by the base station, thus improving the reliability of the communication system.

[0398] Optionally, the UE may determine whether to evaluate an event based on the number of activated TCI states and / or the value of Q indicated by the base station. Event evaluation may be used to determine an event instance. The method for determining an event instance is described below. Optionally, the UE evaluates the event (or evaluates the indicated event) when the number of activated TCI states is greater than or equal to the value of Q indicated by the base station. Optionally, the UE does not evaluate the event (or does not evaluate the indicated event) when the number of activated TCI states is less than or equal to the value of Q indicated by the base station. This method can stop event evaluation when the number of activated TCI states is less than or equal to the value of Q indicated by the base station, saving UE power consumption.

[0399] In this paper, the term "number of TCI states" can be used interchangeably with the term "number of reference signals associated with TCI states".

[0400] Within a time window (e.g., a measurement time window), the UE may transmit a first uplink channel when the number of event instances is greater than or equal to C. Optionally, the length of this time window is indicated by the base station. For example, the length of this time window is indicated by a parameter in the CSI report configuration (e.g., eventDetectionTimeWindowLength-r19).

[0401] The UE can determine / evaluate events (or event instances). The UE can count time instances. The period for which an event instance is determined / counted / evaluated can be based on / equal to the period of a reference signal associated with the event. See above for the method of determining the reference signal associated with the event. The period for which an event instance is determined / counted / evaluated can be based on / equal to the largest (or smallest) period of the reference signal associated with the event.

[0402] Optionally, a time window may include one or more evaluation periods. Optionally, the one or more evaluation periods within a time window may be determined based on the period during which event instances are determined / counted / evaluated. When an event is determined within an evaluation period (e.g., when a corresponding condition is met within an evaluation period), the event is counted once within that evaluation period. For example, the corresponding counter is incremented once.

[0403] In this paper, an event is identified as follows: the conditions for the event are met, or the definition of the event is satisfied. Optionally, the identification of an event can be based on the evaluation of the event (or the conditions associated with the event instance). In this paper, an event instance is identified as follows: the conditions corresponding to the event instance are met, or the definition corresponding to the event instance is satisfied. Optionally, the identification of an event instance can be based on the evaluation of the event instance (or the conditions associated with the event instance).

[0404] In this document, the TCI state can be a reference signal for quasi-co-addressing, used to provide DM-RS for PDSCH in a BWP / CC, DM-RS for PDCCH in a BWP / CC, and CSI-RS (e.g., CSI-RS on a serving cell), and, if applicable, a reference for determining the uplink transmit spatial filter. Optionally, the uplink transmit spatial filter can be for dynamically licensed and configuration-licensed PUSCH and PUCCH resources and SRS.

[0405] In this document, the indicated TCI state is used for downlink channel / downlink signal reception, and / or for uplink channel / uplink signal transmission. The indicated TCI state can be obtained through the following methods.

[0406] The UE can receive / apply an indication of the TCI state. For example, the indication of the TCI state can come from the base station. Optionally, the UE can obtain the indicated TCI state through the indication of the TCI state. The TCI state can be indicated by at least one of the following signaling: RRC, MAC-CE, DCI. Optionally, the indicated TCI state can be obtained by at least one of the following: RRC, MAC-CE, DCI. Optionally, the UE can obtain the configured TCI state by receiving RRC signaling related to the TCI state. Optionally, the UE can obtain the activated TCI state by receiving MAC-CE signaling. Optionally, the activated TCI state comes from the configured TCI state, or the activated TCI state is at least one of the configured TCI states, or the activated TCI state is a subset of the configured TCI states. Optionally, the UE can obtain the indicated TCI state by receiving DCI. Optionally, the indicated TCI state is derived from an activated TCI state, or the indicated TCI state is at least one of the activated TCI states.

[0407] Optionally, the UE may receive an RRC, wherein the RRC may indicate / include configuration information for configuring TCI states. Optionally, the UE may receive configuration information for configuring TCI states. For example, the configuration information for configuring TCI states may be dl-OrJointTCI-StateList. Optionally, the configuration information for configuring TCI states may be in the higher-layer parameter PDSCH-Config. Optionally, the configuration information for configuring TCI states 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 associated with the TCI state. Optionally, the UE applies the indicated TCI after receiving the configuration information for configuring TCI states.

[0408] Optionally, the UE can receive PDCCH configuration information for configuring the PDCCH. Optionally, this PDCCH configuration information can be used to monitor the DCI, where the DCI may include a field indicating the TCI state. This field may be called the TCI field. The size of the TCI field can be predefined or indicated by the base station. For example, the size of the TCI field can be 1 bit, 2 bits, or 3 bits. The TCI field can correspond to several code points, which may be called TCI code points. Optionally, the indicated TCI state can be indicated through the TCI field. For example, the UE can obtain the code point corresponding to the value of the TCI field in the DCI by detecting the DCI. The UE can determine the indicated TCI state based on the TCI state corresponding to the code point.

[0409] The mapping relationship between TCI code points and one or more configured TCI states (e.g., M TCI states) can be indicated by MAC-CE. Optionally, the UE can receive MAC-CE from the base station. Optionally, MAC-CE can activate / indicate one or more TCI states, or MAC-CE can activate / indicate one or more pairs of TCI states. Optionally, MAC-CE can be used to map one or more TCI code points to TCI states. The TCI state indicated / activated by MAC-CE can be referred to as the activated TCI state. Optionally, the activated TCI state is at least one of the M configured TCI states. If MAC-CE maps only a TCI state to a TCI code point, the UE applies the TCI state corresponding to that code point. If MAC-CE maps only a TCI state to a TCI code point, the TCI state corresponding to that code point is the indicated TCI state.

[0410] Optionally, a code point can be mapped to a TCI state. For example, a code point can be mapped to a joint TCI state. Optionally, the joint TCI state can be for both downlink channel / signal (DLTCI state for DL ​​channel / signal) and uplink channel / signal (UL TCI state for UL channel / signal). Optionally, a code point can be mapped to a TCI state pair. A TCI state pair can include a downlink TCI state and an uplink TCI state. Optionally, the downlink TCI state is for the downlink channel / signal (DL TCI state for DL ​​channel / signal). Optionally, the uplink TCI state is for the uplink channel / signal (UL TCI state for UL channel / signal).

[0411] The UE can obtain the indicated TCI state through the above method. The UE can obtain an indicated TCI state. The UE can use / apply the indicated TCI state to receive downlink channels / downlink signals, and / or transmit uplink channels / uplink signals. The UE can use / apply the indicated first TCI state and / or the indicated second TCI state to receive downlink channels / downlink signals, and / or transmit uplink channels / uplink signals.

[0412] In this document, the UE applies the indicated TCI state carried by the DCI when at least one of the following conditions is met: 1) The UE is configured with the dl-OrJointTCI-StateList parameter; 2) The UE will send HARQ-ACK information corresponding to the DCI; optionally, the HARQ-ACK information is a HARQ-ACK; optionally, the HARQ-ACK information is carried by PUSCH or PUCCH; optionally, the DCI has no DL assignment, or the DCI schedules one or more PDSCHs; 3) The indicated TCI state is / are different from the previously indicated TCI state. 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 least 1SCI symbols after the last symbol of the UL channel carrying the HARQ-ACK information. HARQ-ACK information). Here, ACK is a parameter that defines the minimum delay, in symbols, from the end of a PUCCH or PUSCH transmission to the application of the new TCI state. This parameter ensures sufficient time to process and prepare for the new transmission before applying the new TCI state. Optionally, 𝑏𝑒𝑎𝑚𝐴𝑝𝑝𝑇𝑖𝑚𝑒 can be predefined or indicated by the base station. The value of 𝑏𝑒𝑎𝑚𝐴𝑝𝑝𝑇𝑖𝑚𝑒 can be one of 1, 2, 3, 4, 14, 28, 42, 56, 70, 84, 98, 112, 224, or 336.

[0413] In this document, the indicated TCI state can be applied to one or more serving cells. The indicated TCI state can be applied to one or more BWPs within a serving cell.

[0414] In this paper, the activated TCI state can be applied to one or more serving cells. The activated TCI state can be applied to one or more BWPs in a serving cell.

[0415] The reference signal resources associated with the indicated TCI state are discussed below. The method for determining the indicated TCI state is described above.

[0416] Optionally, the reference signal associated with the indicated TCI state can be: the reference signal corresponding to the indicated TCI state. Optionally, the reference signal associated with the indicated TCI state can be at least one of the following: #1) an SSB quasi-co-addressable with the QCL reference signal of the indicated TCI state; #2) the QCL reference signal of the indicated TCI state. Optionally, a TCI state can be associated with / include / correspond to one or two QCL reference signals. Optionally, if a TCI state is associated with / includes / corresponds to two QCL reference signals, then the reference signal associated with the indicated TCI state is the reference signal of QCL type D corresponding to these two QCL reference signals.

[0417] Optionally, the reference signal resource associated with the indicated TCI state can be determined based on method #1 or method #2. Optionally, method #1 or method #2 can be indicated by the base station. For example, parameters included in the CSI report configuration indicate method #1 or method #2. Optionally, the reference signal resource associated with the indicated TCI state can be determined based on the reference signal resource associated with the CSI report configuration. Optionally, the reference signal resource associated with the indicated TCI state can be determined based on the type of the reference signal resource associated with the CSI report configuration. Optionally, if the resource in the resource set is an SSB resource, the reference signal associated with the indicated TCI state is determined using method #1. If the resource in the resource set is a CSI-RS resource (e.g., a reference signal resource with repeating parameters), the reference signal associated with the indicated TCI state is determined based on method #2.

[0418] Optionally, the type of the reference signal associated with the indicated TCI status is the same as the type of reference resource included in the resource set.

[0419] Optionally, the reference signal associated with the indicated TCI state and the reference resource included in the resource set may be an SSB. Optionally, when the reference signal associated with the indicated TCI state and / or the reference signal in the resource set is an 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 allows the UE to compare measurement results for SSBs from the same physical cell, so that the UE can initiate CSI reporting for that physical cell.

[0420] In some cases, a UE can be configured with one or more serving cells / BWPs, each with different indicated TCI states. It needs to be clearly defined which indicated TCI state is used for event detection. The following methods can prevent the UE from initiating CSI using incorrect indicated TCI states, thus improving the reliability of the communication system. Optionally, the indicated TCI state is an indicated TCI state associated with a specific serving cell, or an indicated TCI state associated with a specific BWP within a specific serving cell. For example, the indicated TCI state used to initiate CSI (or, for reporting CSI, or for event determination, or for event association) can be: an indicated TCI state associated with a specific serving cell, or an indicated TCI state associated with a specific BWP within 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 reporting configuration. For example, when the CSI report configuration includes this parameter (e.g., carrier), the specific serving cell is indicated by this parameter. For example, when the CSI report configuration does not include this parameter (e.g., carrier), the specific serving cell is the serving cell where the CSI report configuration is located. For example, the specific serving cell is the serving cell where a resource in the resource set is located. The method for determining the serving cell where a resource in the resource set is located is described above. Optionally, the specific BWP can be indicated by the base station, or the specific BWP can 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 this parameter, the specific serving cell is indicated by this parameter. For example, when the CSI report configuration does not include this parameter, the specific serving cell is a predefined BWP. Optionally, the parameter used to indicate the specific BWP may be 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 can be indicated by the parameter ServingCellAndBWP-Id. Here, the BWP can be a downlink BWP. A predefined BWP can be: an active BWP, an initial BWP, a default BWP, a BWP with the smallest ID, or a BWP with the largest ID.

[0421] In this document, the indicated TCI state associated with a specific serving cell refers to the indicated TCI state applied / used on that specific serving cell. In this document, the indicated TCI state associated with a specific BWP refers to the indicated TCI state applied / used on that specific BWP.

[0422] The reference signal resources associated with the activated TCI state are discussed below. The method for determining the activated TCI state is described above.

[0423] Optionally, the reference signal associated with the activated TCI state can be: the reference signal corresponding to the activated TCI state. Optionally, the reference signal associated with the activated TCI state can be at least one of the following: #3) an SSB quasi-co-addressable with the QCL reference signal of the activated TCI state; #4) the QCL reference signal of the activated TCI state. Optionally, a TCI state can be associated with / include / correspond to one or two QCL reference signals. Optionally, if a TCI state is associated with / includes / corresponds to two QCL reference signals, then the reference signal associated with the indicated TCI state is the reference signal of QCL type D corresponding to the two QCL reference signals.

[0424] Optionally, the reference signal resource associated with the activated TCI state can be determined based on method #3 or method #4. Optionally, method #3 or method #4 can be indicated by the base station. For example, parameters included in the CSI report configuration indicate method #3 or method #4. Optionally, the reference signal resource associated with the activated TCI state can be determined based on the reference signal resource associated with the CSI report configuration. Optionally, the reference signal resource associated with the activated TCI state can be determined based on the type of reference signal resource associated with the CSI report configuration. Optionally, if the resource in the resource set is an SSB resource, the reference signal associated with the indicated TCI state is determined using method #3. If the resource in the resource set is a CSI-RS resource (e.g., a reference signal resource with a repeating parameter), the reference signal associated with the indicated TCI state is determined based on method #4.

[0425] Optionally, the reference signals associated with the activated TCI states are of the same type. For example, one or more TCI states activated by MAC-CE signaling are associated with reference signals of the same type. Optionally, the type of the reference signals associated with the activated TCI states is the same as the type of the reference resources included in the resource set.

[0426] Optionally, the reference signal associated with the activated TCI state and the reference resource included in the resource set may be an SSB. Optionally, when the reference signal associated with the activated TCI state and / or the reference signal in the resource set is an 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 allows the UE to compare measurement results for SSBs from the same physical cell, so that the UE can initiate CSI reporting for that physical cell.

[0427] In some cases, a UE can be configured with one or more serving cells, each with different activated TCI states. It is necessary to specify which activated TCI state is used for event detection. The following methods can prevent the UE from initiating CSI using the wrong activated TCI state, thus improving the reliability of the communication system. Optionally, the activated TCI state is an activated TCI state associated with a specific serving cell, or an activated TCI state associated with a specific BWP within a specific serving cell. For example, the activated TCI state used to initiate CSI (or, to report CSI, or, for event determination, or for event association) could be: an activated TCI state associated with a specific serving cell, or an activated TCI state associated with a specific BWP within 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 parameters (e.g., carrier) in the CSI reporting configuration. For example, when the CSI report configuration includes this parameter (e.g., carrier), the specific serving cell is indicated by this parameter. For example, when the CSI report configuration does not include this parameter (e.g., carrier), the specific serving cell is the serving cell where the CSI report configuration is located. For example, the specific serving cell is the serving cell where a resource in the resource set is located. The method for determining the serving cell where a resource in the resource set is located is described above. Optionally, the specific BWP can be indicated by the base station, or the specific BWP can 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 this parameter, the specific serving cell is indicated by this parameter. For example, when the CSI report configuration does not include this parameter, the specific serving cell is a predefined BWP. Optionally, the parameter used to indicate the specific BWP may be 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 can be indicated by the parameter ServingCellAndBWP-Id. Here, the BWP can be a downlink BWP. A predefined BWP can be: an active BWP, an initial BWP, a default BWP, a BWP with the smallest ID, or a BWP with the largest ID.

[0428] Return to reference Figure 7 In some implementations, the first information in operation S710 may include fifth information, which may include at least one of the following:

[0429] - Information on one or more first RSs, which may be (or candidate) RSs corresponding to (or associated with) the indicated TCI state. For example, the information on the first RS may include CSI-ResourceConfig, which may define one or more groups of Non-Zero-Power (NZP)-CSI-RS resource sets (e.g., NZP-CSI-RS-ResourceSet), CSI-Interference Measurement (IM)-Resource Sets (e.g., CSI-IM-ResourceSet) and / or CSI-SSB-Resource Sets (e.g., CSI-SSB-ResourceSet).

[0430] - Information about one or more first TCI states, wherein the first TCI states can be information about possible (or candidate) indicated TCI states.

[0431] For example, the information of an RS can be information about an RS resource, and may include at least one of the following:

[0432] - The ID of the RS resource, configured, for example, via the parameters NZP-CSI-RS-ResourceId and / or SSB-Index.

[0433] - The BWP for RS resources, for example, configured via the parameter BWP-Id.

[0434] -RS resources serve cells, for example, configured via the ServCellIndex parameter.

[0435] - Serving cell list (or set) information, for example, the serving cell list (or set) associated with RS resources, which can be one of the parameters simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3, or simultaneousU-TCI-UpdateList4.

[0436] It should be noted that "BWP of RS resource" and "BWP where RS resource is located" can be used interchangeably, as can "serving cell of RS resource" and "serving cell where RS resource is located".

[0437] For example, the information of the TCI status may include at least one of the following:

[0438] - The ID of the TCI state, for example, configured via the parameter TCI-StateId.

[0439] -TCI state BWP, for example, configured via parameter BWP-Id.

[0440] The serving cell in the -TCI state, for example, configured via the ServCellIndex parameter.

[0441] - The information of the serving cell list (or set) associated with the TCI status, for example, can be one of the parameters simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3 or simultaneousU-TCI-UpdateList4.

[0442] In some implementations, the resources of the current beam configured in the CSI report can be determined based on a configured list (or set) of serving cells. For example, the resources of the current beam can be RS resources corresponding to the indicated TCI state of the serving cells included in the configured list (or set) of serving cells. Optionally, the UE can be configured with Type 1 events and / or Type 2 events. This allows for the identification of the serving cell for the current beam's resources when multiple serving cells are configured, thereby clarifying the UE's behavior and improving the reliability of the CSI report.

[0443] In some implementations, the resources of the current beam configured in the CSI report can 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, the CSI report configuration may not have a configured list (or set) of serving cells. For instance, the resources of the current beam can be the RS resources corresponding to the TCI state of the serving cell applied to the CSI report configuration. Optionally, the UE can be configured with Type 1 events and / or Type 2 events. This allows for the identification of the serving cell of the current beam's resources when multiple serving cells are configured, thereby clarifying the UE's behavior and improving the reliability of the CSI report.

[0444] In some implementations, the resources of the current beam configured in the CSI report can be determined based on the serving cell index configured in the CSI report configuration (e.g., the serving cell index indicated by the carrier parameter). For example, the resources of the current beam can be RS resources corresponding to the TCI state of the serving cell configured in the CSI report configuration. Optionally, the UE can be configured with Type 1 events and / or Type 2 events. This allows for the identification of the serving cell for the current beam's resources when multiple serving cells are configured, thereby clarifying the UE's behavior and improving the reliability of the CSI report.

[0445] In some implementations, the RS resources configured in the CSI report (e.g., RS resources for measurement) can be determined based on a configured serving cell list (or set) information. For example, the RS resources can be RS resources corresponding to the activated TCI state of the serving cells included in the configured serving cell list (or set) information. Optionally, the UE can be configured with Type 3 events. This allows for the identification of the serving cell for the current beam's resources when multiple serving cells are configured, thereby clarifying the UE's behavior and improving the reliability of the CSI report.

[0446] In some implementations, the protocol can specify that the configured TCI state list is identical for all serving cells in a serving cell list (or set). For example, one serving cell in a serving cell list (or set) is configured with an explicit list (e.g., explicitlist), which may include the parameter dl-OrJointTCI-StateToAddModList. Other serving cells in the serving cell list (or set) can be configured with parameters indicating referenced TCI states, such as the parameter unifiedTCI-StateRef. The referenced TCI state may indicate the ID of the serving cell and the BWP ID. This simplifies UE implementation complexity.

[0447] In some implementations, the protocol can specify that for all BWPs (e.g., downlink BWPs, or PDSCH configurations) on all serving cells in a serving cell list (or set), the configured TCI state lists are identical. For example, a BWP (e.g., downlink BWP, or PDSCH configuration) of a serving cell in a serving cell list (or set) is configured with an explicit list (e.g., explicitlist), which may include the parameter dl-OrJointTCI-StateToAddModList. All BWPs of other serving cells in the serving cell list (or set), or other BWPs of the serving cell, can be configured with parameters indicating referenced TCI states, such as the parameter unifiedTCI-StateRef. The referenced TCI state can indicate the ID of the serving cell and the ID of the BWP. This simplifies UE implementation complexity.

[0448] In some implementations, the UE can be configured by the network with a resource set for a current beam (e.g., parameter currentBeamResourceSet), where each element in the set corresponds to a resource for a current beam, or the UE can be configured by the network with one or more resources for current beams (e.g., parameter resourceOfCurrentBeam). For example, the resource set for a current beam (e.g., parameter currentBeamResourceSet) or one or more resources for current beams (e.g., parameter resourceOfCurrentBeam) can be configured in the CSI report configuration. Optionally, for the resources of the current beam (e.g., resources for each current beam), the UE can be configured by the network with its corresponding serving cell information (e.g., serving cell ID). If the UE is not configured with corresponding serving cell information for a resource of a current beam, the serving cell where the resource of the current beam is located can be the serving cell where the CSI report configuration is located. Alternatively, the resource of the current beam can be the RS resource corresponding to the TCI state applied to the serving cell where the CSI report configuration is located. Optionally, for the resources of the current beam (e.g., resources of each current beam), the UE can be configured by the network with its corresponding BWP information (e.g., BWP ID). Optionally, for the resources of the current beam (e.g., resources of each current beam), the UE can be configured by the network with its corresponding serving cell information (e.g., serving cell ID) and BWP information (e.g., BWPID). Optionally, BWP information can be configured only for NZP-CSI-RS resources. CSI-SSB resources on a serving cell can be considered common (i.e., the same) to all BWPs on the serving cell, and BWP information does not need to be configured. It should be noted that the current beam can be understood as the transmit beam currently being used by the base station, i.e., the indicated TCI state or the CSI-RS QCL (e.g., QCL-Type D) SSB corresponding to (or associated with) the indicated TCI state.

[0449] According to some example embodiments of this disclosure, whether to perform measurements and / or send the first PUCCH for the CSI reporting configuration (e.g., the configured or associated RS resource) can be determined based on whether the serving cell (and / or BWP) where the RS or RS resource resides is included (e.g., in the CSI reporting configuration) in the configured serving cell (and / or BWP) or the serving cell list (or set) (e.g., whether the serving cell (and / or BWP) where the RS or RS resource resides belongs to the configured set of serving cells (and / or BWPs), or is one of the configured one or more serving cells (and / or BWPs)). This process can be applied to each of the one or more RS or RS resources.

[0450] In some implementations, for a CSI reporting configuration, if the serving cell containing the RS or RS resource is included in the serving cells or the serving cell list (or set) contained in the CSI reporting configuration, the UE may send the first PUCCH. For example, for a CSI reporting configuration, if one of the serving cells or the serving cell list (or set) in the CSI reporting configuration is the serving cell containing the RS or RS resource (e.g., if one of the serving cells in the serving cell list (or set) in the CSI reporting configuration is the same as or matches the serving cell containing the RS or RS resource), the UE may perform measurements on the CSI reporting configuration (e.g., the configured or associated RS resource) and / or send the first PUCCH.

[0451] In some implementations, for a CSI reporting configuration, if the serving cell containing the RS or RS resource is not included in the serving cells in the CSI reporting configuration or in the list (or set) of serving cells, the UE may not perform measurements on the CSI reporting configuration (e.g., the configured or associated RS resource) and / or may not send the first PUCCH. For example, for a CSI reporting configuration, if no serving cell in the CSI reporting configuration is the serving cell containing the RS or RS resource (e.g., if no serving cell in the list (or set) of serving cells in the CSI reporting configuration is the same as or matches the serving cell containing the RS or RS resource), the UE may not perform measurements on the CSI reporting configuration (e.g., the configured or associated RS resource) and / or may not send the first PUCCH.

[0452] In some implementations, for a CSI reporting configuration, if the BWP containing the RS or RS resource is included in the BWPs of the CSI reporting configuration, the UE can perform measurements on the CSI reporting configuration (e.g., the configured or associated RS resource) and / or the UE can send the first PUCCH. For example, for a CSI reporting configuration, if one of the BWPs in the CSI reporting configuration is the BWP containing the RS or RS resource (e.g., if one of the BWPs in the CSI reporting configuration is the same as or matches the BWP containing the RS or RS resource), the UE can perform measurements on the CSI reporting configuration (e.g., the configured or associated RS resource) and / or send the first PUCCH.

[0453] In some implementations, for a CSI reporting configuration, if the BWP containing the RS or RS resource is not included in the BWPs of the CSI reporting configuration, the UE may not perform measurements on the CSI reporting configuration (e.g., the configured or associated RS resource), and / or may not send the first PUCCH. For example, for a CSI reporting configuration, if no BWP in the BWPs of the CSI reporting configuration is the BWP containing the RS or RS resource (e.g., if no BWP in the BWPs of the CSI reporting configuration is the same as or matches the BWP containing the RS or RS resource), the UE may not perform measurements on the CSI reporting configuration (e.g., the configured or associated RS resource) and / or may not send the first PUCCH.

[0454] It should be noted that "the serving cell where the RS or RS resource is located" can be replaced with "the serving cell that the indicated TCI state should have" or "the serving cell associated with the indicated TCI state".

[0455] According to some example embodiments of this disclosure, whether to measure the CSI report configuration (e.g., the configured or associated RS resources) and / or send the first PUCCH can be determined based on whether the RS resources corresponding to (or associated with) the indicated TCI state (e.g., the indicated TCI state to be applied by the UE) are included in (e.g., in the CSI report configuration) the resources of the configured current beam (e.g., the RS resources corresponding to (or associated with) the indicated TCI state belong to the resource set of the configured current beam, are one RS resource in the resource set of the configured current beam, or are one of the resources of one or more configured current beams). Alternatively, whether to measure the CSI report configuration (e.g., the configured or associated RS resources) and / or send the first PUCCH can be determined based on whether the indicated TCI state (e.g., the indicated TCI state to be applied by the UE) is included in (e.g., in the CSI report configuration) one or more configured TCI states. As used in exemplary embodiments of this disclosure, the resources of the current beam configured (e.g., in the CSI report configuration) may also be referred to as the resources of the configured RS (for convenience of description, it may be referred to as the first RS resource).

[0456] In some implementations, for a CSI reporting configuration, if the RS resource corresponding to (or associated with) the indicated TCI state is included in the resources of a first RS in the CSI reporting configuration, the UE may send the first PUCCH. For example, for a CSI reporting configuration, if one of the resources of the first RS in the CSI reporting configuration is the RS resource corresponding to (or associated with) the indicated TCI state (e.g., if one of the resources of the first RS in the CSI reporting configuration is the same as or matches the RS resource corresponding to (or associated with) the indicated TCI state), the UE performs measurements on the CSI reporting configuration (e.g., the configured or associated RS resources) and / or may send the first PUCCH. In some implementations, for a CSI reporting configuration, if the indicated TCI state is included in the first TCI state in the CSI reporting configuration, the UE may perform measurements on the CSI reporting configuration (e.g., the configured or associated RS resources) and / or send the first PUCCH. For example, for a CSI reporting configuration, if one of the TCI states in the first TCI state of the CSI reporting configuration is the indicated TCI state (e.g., if one of the TCI states in the first TCI state of the CSI reporting configuration is the same as or matches the indicated TCI state), the UE can perform measurements on the CSI reporting configuration (e.g., the configured or associated RS resources) and / or send the first PUCCH.

[0457] It should be noted that the UE may need to meet other conditions before sending the first PUCCH. For example, the UE may perform measurements on the CSI report configuration (e.g., the configured or associated RS resources), and if the conditions of a specific event are met, the UE may send the first PUCCH.

[0458] In some implementations, for a CSI reporting 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 reporting configuration, the UE may not measure the beam associated with the indicated TCI state and / or may not send the CSI report corresponding to the CSI reporting configuration. For example, for a CSI reporting configuration, if none of the resources of the first RS in the CSI reporting configuration are RS resources corresponding to (or associated with) the indicated TCI state (e.g., if all resources of the first RS in the CSI reporting configuration are different from or do not match the RS resources 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 send the CSI report corresponding to the CSI reporting configuration.

[0459] In some implementations, for a CSI reporting configuration, if the indicated TCI state is not included in the first TCI state in the CSI reporting configuration, the UE may not perform measurements on the CSI reporting configuration (e.g., the configured or associated RS resources) and / or not send the first PUCCH. For example, for a CSI reporting configuration, if none of the first TCI states in the CSI reporting configuration is the indicated TCI state (e.g., if none of the first TCI states in the CSI reporting configuration is the same as or matches the indicated TCI state), the UE may not perform measurements on the CSI reporting configuration (e.g., the configured or associated RS resources) and / or not send the first PUCCH.

[0460] In some cases, a UE can be configured with multiple serving cells by the network. For ease of description, the following explanation uses two serving cells as an example. It is understood that this method can also be applied to situations where the UE is configured with more than two serving cells. The UE can be configured with a first serving cell and a second serving cell, and the resources of the first RS in the CSI report configuration can be in either the first or second serving cell. In this case, the above description regarding RS, "the RS resources corresponding to (or associated with) the indicated TCI state are included in the resources of the first RS in the CSI report configuration," can be understood as "for the same serving cell, the RS resources corresponding to (or associated with) the indicated TCI state are included in the resources of the first RS in the CSI report configuration," that is, the serving cell where the RS resources corresponding to (or associated with) the indicated TCI state are 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 of the TCI status, "the indicated TCI status is not included in the first TCI status in the CSI report configuration," can be understood as "for the same serving cell, the indicated TCI status is included in the first TCI status in the CSI report configuration," that is, the serving cell corresponding to the indicated TCI status is the same as the serving cell corresponding to the first TCI status in the CSI report configuration.

[0461] 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 send the first PUCCH. Wherein, 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 resource of the first RS in the CSI report configuration is located. In the case that 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 of the resource of the first RS in the CSI report configuration.

[0462] It should be noted that "the indicated TCI state of the serving cell" can be understood as "the indicated TCI state applied to the serving cell". Similarly, "the serving cell corresponding to the indicated TCI state" can be understood as "the serving cell applying the indicated TCI state".

[0463] In the description of exemplary embodiments of this disclosure, “resource of the current beam” and “RS resource corresponding to (or associated with) the indicated TCI state” can be used interchangeably, “current beam” and “indicated TCI state” can be used interchangeably, and “resource”, “CSI resource”, “CSI-RS resource”, “CSI-RS”, “NZP CSI-RS”, “CSI-SSB” and “RS” can be used interchangeably.

[0464] Return to reference Figure 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 the RS corresponding to (or associated with) a new beam (or candidate beam) (or TCI status). For example, the first information may be CSI report configuration (e.g., higher-level parameter CSI-ReportConfig).

[0465] In some implementations, a corresponding first RS can be configured for each set (or list) of second RS resources. In embodiments of this disclosure, "measuring the CSI report configuration (e.g., the configured or associated RS resources)" can be understood as measuring the second RSs in the set (or list) of second RS resources corresponding to the first RS. The fourth information includes information about the second RSs in the set (or list) of second RS resources corresponding to the first RS.

[0466] In some implementations, each second RS resource in a set (or list) of second RS resources can be configured with a corresponding first RS. In embodiments of this disclosure, "measuring the CSI report configuration (e.g., the configured or associated RS resource)" can be understood as measuring the second RS resource corresponding to the first RS. The fourth information includes information about the second RS corresponding to the first RS.

[0467] In some examples, for a CSI reporting 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 reporting configuration, the UE can perform a measurement on the CSI reporting configuration (e.g., the configured or associated RS resource), for example, measure the second RS in the set (or list) of the second RS resources corresponding to the first RS or measure the second RS resource corresponding to the first RS, and / or send the first PUCCH.

[0468] In some implementations, a 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 will only measure and report the associated CSI report configuration.

[0469] In some implementations, 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 reporting configuration associated with the indicated TCI state, the UE may send the first PUCCH and / or measure and report the associated CSI reporting configuration. For example, for a CSI reporting configuration corresponding to (or associated with) the indicated TCI state, if one of the resources of the first RS in the CSI reporting configuration is the RS resource corresponding to (or associated with) the indicated TCI state (e.g., if one of the resources of the first RS in the CSI reporting configuration is the same as or matches the RS resource corresponding to (or associated with) the indicated TCI state), the UE may send the first PUCCH and / or measure and report the associated CSI reporting configuration.

[0470] The common feature of the above methods is that the UE can determine an associated subset from all configured CSI reporting configurations based on the currently indicated TCI state or the RS corresponding to the indicated TCI state (or associated with it), and the UE only measures and / or reports the CSI reporting configurations included in the subset.

[0471] According to exemplary embodiments of this disclosure, the RS or TCI state of the current beam can be restricted to being explicitly configured in the CSI report configuration (e.g., the RS resources of the current beam are included or belong to RS resources configured in the CSI report configuration). For example, for a beam to be applied, if the RS or RS resources of that beam match RS resources configured or indicated in the CSI report configuration, a CSI report of that CSI report configuration can be sent. This method is applicable to situations where the UE only needs to measure specific beams (e.g., measure adjacent beams) and does not need to measure all possible beams. This method can reduce the UE measurement time, thereby reducing CSI reporting latency. Furthermore, this method can reduce the number of RSs measured by the UE, thereby reducing the UE implementation complexity and reducing UE power consumption.

[0472] Return to reference Figure 7 In some implementations, the first information in operation S710 may include information related to a second RS, which may include information related to one or more second RS resources. Details and examples of the second RS can be found in the preceding description.

[0473] The UE may transmit a physical uplink channel carrying fourth information, which may include index information of at least one second RS resource. Details and examples of the fourth information can be found in the previous description. The at least one second RS resource indicated by the fourth information may be an RS resource corresponding to a TCI state desired by the UE.

[0474] The UE can receive a PDCCH, wherein the DCI format carried by the PDCCH includes a Transmission Configuration Indicator (TCI) status field indicating the TCI status. The PDCCH may be later than the physical uplink channel. For example, the PDCCH may not be earlier than a first time period after the physical uplink channel (e.g., the first time period may be a time interval, such as N_a symbols), or the PDCCH may be later than the first time period after the physical uplink channel, or the PDCCH may be later than the physical uplink channel and the time interval between it and the physical uplink channel may be equal to or greater than the first time period, or the PDCCH may be later than the physical uplink channel. Figure 9 Examples of the timing relationship between the PDCCH and the physical uplink channel carrying fourth information, according to some exemplary embodiments of this disclosure, are shown. Figure 9As shown, the PDCCH occurs at or after time t2; the PDCCH is received at or after time t2; the physical uplink channel is transmitted at a time prior to the PDCCH reception (e.g., time T_1) (or before the time prior to the PDCCH reception); the physical uplink channel is earlier than or no later than the time prior to the PDCCH reception (e.g., time T_1); the UE receives the PDCCH at or after a time prior to the transmission of the physical uplink channel (e.g., time T_1); the time interval between the PDCCH and the first PDCCH is greater than or equal to the first time T_1. The above description of the timing relationship between the PDCCH and the physical uplink channel can be used interchangeably. The first time can be predefined or reported through higher-layer signaling configuration and / or UE capability reporting. The first time can be the processing time related to beam switching triggered by the UE. The first time can be the network processing time, for example, the time of network decoding of the fourth information and / or the time of network scheduling of the PDCCH (e.g., the time of base station decoding of the fourth information plus the time of base station scheduling of the PDCCH). The first time can also include the time of the person in question.

[0475] If the first condition is met, the TCI state is applied a second time after the PDCCH (e.g., the second time can be a time period, such as N_b symbols). For example, the second time can be reported through higher-layer signaling configuration and / or UE capabilities. The second time can be the time related to the activation of a UE-triggered beam switch. The second time can be the UE processing time, for example, the time the UE decodes the PDCCH and / or the time the UE performs the beam switch (e.g., the time the UE decodes the PDCCH plus the time the UE performs the beam switch). Figure 10 Examples of the timing of applying the TCI state according to some exemplary embodiments of this disclosure are shown. References Figure 10 Time t4 is the second time (T_2) after the PDCCH, that is, the interval between time t4 and PDCCH is the second time (T_2). Under the condition of satisfying the first condition, the TCI state can be applied at time t4 or after time t4, or can be applied starting from time t4, or can be applied starting from the first time unit (e.g., the first time slot) after time t4.

[0476] In some implementations, the first information may include first serving cell index information. For example, the first serving cell is the serving cell to which the TCI state is applied. As another example, the first serving cell is the serving cell to which the TCI state corresponding to the second RS is applied.

[0477] In some implementations, the first information may include a serving cell list. For example, the serving cells in the serving cell list are the serving cells to which the TCI state is applied. As another example, the serving cells in the serving cell list are the serving cells to which the TCI state corresponding to the second RS is applied.

[0478] In some implementations, the first information may include BWP index information of the first serving cell. For example, the BWP of the first serving cell is the BWP of the serving cell to which the TCI state is applied. As another example, the BWP of the first serving cell is the BWP of the serving cell to which the TCI state corresponding to the second RS is applied.

[0479] In some implementations, the first condition may be at least one of the following:

[0480] - The RS resource corresponding to the TCI state is the same as one of the one or more second RS resources.

[0481] - The RS resource corresponding to the TCI state is one of the one or more second RS resources.

[0482] - The RS resource corresponding to the TCI state is the first of the one or more second RS resources.

[0483] - The serving cell indicated by the DCI format is the same as the first serving cell.

[0484] - The BWP indicated by the DCI format is the same as the BWP of the first serving cell.

[0485] - The BWP of the serving cell indicated by the DCI format is the same as the BWP of the first serving cell.

[0486] - The RS resource corresponding to the TCI state is the same as one of the one or more second RS resources, and the serving cell indicated by the DCI format is the same as the first serving cell.

[0487] - The serving cell indicated by the DCI format is the serving cell in the serving cell list.

[0488] - The serving cell indicated by the DCI format is included in the serving cell list.

[0489] - The RS resource corresponding to the TCI status indicated by the TCI status field in the DCI format carried by the PDCCH is the same as one of the one or more second RS resources, and the serving cell indicated by the DCI format is the serving cell in the serving cell list.

[0490] The DCI format carried by the PDCCH includes a first field that indicates confirmation of the switch, such as confirmation of a TCI state switch. For example, the first field can be a TCI state switch field.

[0491] For example, the serving cell indicated (or scheduled) by the DCI format can be the serving cell indicated by the carrier indicator field in the DCI format. If the DCI format does not have a carrier indicator field, the serving cell indicated by the DCI format can be the serving cell where the PDCCH carrying the DCI format is located.

[0492] For example, the DCI format may include a field indicating the set of serving cells.

[0493] This method can reduce beam switching latency and, by using DCI indication to verify whether the UE-suggested beam is used, ensures consistency in the network and UE's understanding of beam switching. This allows the UE to use a better beam more quickly to transmit and receive data, thereby improving communication reliability.

[0494] In some implementations, "the TCI state is applied a second time (e.g., N_b symbols after the PDCCH)" can be used in place of at least one of the following:

[0495] The TCI state is applied starting from the second time (e.g., N_b symbols) after the PDCCH.

[0496] The TCI state is applied starting from the time following the PDCCH, and the time interval between the time following the PDCCH and the end position of the PDCCH (e.g., the last symbol) is equal to the second time (e.g., N_b symbols).

[0497] The TCI state is applied in the first time unit (e.g., the first slot) after the second time (e.g., N_b symbols) following the PDCCH.

[0498] The earliest time unit (e.g., the earliest slot) after the second time following the PDCCH (e.g., N_b symbols) is applied to the TCI state.

[0499] The TCI state is applied starting from the first time unit (e.g., the first slot) after the second time (e.g., N_b symbols) following the PDCCH.

[0500] The TCI state is applied starting from the earliest time unit (e.g., the earliest slot) after the second time (e.g., N_b symbols) following the PDCCH.

[0501] The TCI state is applied starting from the first time unit (e.g., the first time slot) after the time following the PDCCH, and the time interval between the time following the PDCCH and the end position of the PDCCH (e.g., the last symbol) is equal to the second time (e.g., N_b symbols).

[0502] The TCI state is applied starting from the earliest time unit (e.g., the earliest slot) after the time point following the PDCCH, and the time interval between the time following the PDCCH and the end position of the PDCCH (e.g., the last symbol) is equal to the second time (e.g., N_b symbols).

[0503] In some implementations, the time unit can be the time unit of the serving cell where the PDCCH is located.

[0504] In some implementations, the UE applies the TCI state indicated by the DCI format when the first condition is met (e.g., if the RS resource corresponding to the TCI state indicated in the DCI format carried in the PDCCH is the same as one of the first RS resources configured or indicated by the first information, e.g., the PDCCH is not earlier than a first time after the physical uplink channel carrying the fourth information) (examples of the first condition can be found in the previous description) and at least one of the following conditions is met: 1) the UE is configured with a TCI state (e.g., the dl-OrJointTCI-StateList parameter); 2) the indicated TCI state is different from a previously indicated TCI state. For example, when the first condition is met and at least one of the above conditions is met, the TCI state is applied after a second time (e.g., N_b symbols) after the PDCCH (e.g., the TCI state is applied starting from the first time unit (e.g., the first time slot) after the second time (e.g., N_b symbols) after the PDCCH).

[0505] Additionally or alternatively, when the first condition is not met, and at least one of the above conditions 1), 2), and 3) is met, wherein in condition 3), the UE will send a PUCCH or PUSCH carrying HARQ-ACK information; optionally, the HARQ-ACK information is a positive HARQ-ACK; optionally, the HARQ-ACK information corresponds to the DCI format carrying a TCI State indication without downlink allocation, or corresponds to one or more PDSCHs scheduled by the DCI format carrying the TCI State indication, wherein the indicated TCI State is applied from the first time unit (e.g., the first time slot) after at least the third time (e.g., 1000 symbols) following the end of the PUCCH or PUSCH (e.g., the last symbol); for example, it may be predefined, or configured by higher-layer signaling or reported by UE capabilities.

[0506] In some examples, when a UE is configured with a TCI state (e.g., dl-OrJointTCI-StateList), it will send a PUCCH or PUSCH (e.g., carrying a positive HARQ-ACK, which corresponds to carrying a TCI state indication (TCIState)). When the indicated TCI state is different from the previously indicated TCI state, and if the first condition is met (e.g., if the RS resource corresponding to the TCI state indicated in the DCI format carried in the PDCCH is the same as one of the first RS resources configured or indicated by the first information, for example, the PDCCH is not earlier than the time of the first time after the physical uplink channel carrying the fourth information) (for example, see the previous description), the TCI state is applied after the second time (e.g., N_b symbols) after the PDCCH (e.g., the TCI state is applied from the first time unit (e.g., the first time slot) after the second time (e.g., N_b symbols) after the PDCCH).

[0507] In some examples, a UE configured with a TCI state (e.g., dl-OrJointTCI-StateList) will send a PUCCH (e.g., a PUCCH carrying a positive HARQ-ACK) or a PUSCH (e.g., a PUCCH carrying a positive HARQ-ACK, which corresponds to carrying a TCI state indication). When a PUCCH (or PUSCH) corresponds to one or more PDSCHs (or PCIs) scheduled by a DCI carrying a TCI state indication and there is no downlink assigned DCI, and if the indicated TCI state(s) differs from the previously indicated TCI state(s), and if the first condition (for an example of the first condition, refer to the previous description) is not met, the indicated TCI state(TCI-State) and / or TCI uplink state(TCI-UL-State) shall be applied from the first slot after at least the third time interval (e.g., 1000 symbols) following the last symbol of the PUCCH or PUSCH; for example, it may be predefined, configured by higher-layer signaling, or reported by UE capabilities). If the UE receives more than one indicated TCI state for the serving cell (CC) / BWP to be applied starting from the first time slot after the last symbol of the PUCCH or PUSCH (e.g., 10 symbols), then in the time corresponding to the positive HARQ-ACK value, the indicated TCI state carried in the latest DCI (e.g., for the corresponding CORESET pool index value (if applicable)) is applied. For example, the first time slot and the third time slot (e.g., 10 symbols) can both be determined on the active BWP with the smallest subcarrier spacing (SCS) among the BWPs of the serving cell applying (multiple) TCI-States or (multiple) TCI-UL-States, wherein the (multiple) BWPs are active at the end of a PUCCH or PUSCH carrying a positive HARQ-ACK. The indicated (multiple) TCI-States or TCI-UL-States can be based on the active TCI state in each time slot, wherein the time slot is the time slot in which the UE applies the indicated (multiple) TCI-States or (multiple) TCI-UL-States to the downlink channel / signal or the uplink channel / signal.

[0508] In some implementations, the difference between the indicated (multiple) TCI states and previously indicated (multiple) TCI states can be understood as the difference between the indicated (multiple) TCI states and previously indicated (multiple) TCI states for the same serving cell, for example, the same serving cell indicated (or scheduled) by the DCI format. For instance, the UE is not configured with simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3, or simultaneousU-TCI-UpdateList4. In one example, the TCI state indicated by the first DCI format carried by the first PDCCH differs from the TCI state indicated by the second DCI format carried by the second PDCCH, and the serving cell indicated (or scheduled) by the first and second DCI formats is the same. The first PDCCH (or the first DCI format) precedes the second PDCCH (or the second DCI format), and for the TCI state indicated by the second DCI format, the TCI state indicated by the first DCI format is the previously indicated TCI state.

[0509] In some implementations, the UE can be configured with serving cell list (or set) information, such as at least one of the parameters simultaneousU-TCI-UpdateList1, simultaneousU-TCI-UpdateList2, simultaneousU-TCI-UpdateList3, or simultaneousU-TCI-UpdateList4. The difference between the indicated (multiple) TCI states and previously indicated (multiple) TCI states can be understood as follows: for the same serving cell, for example, the same serving cell indicated (or scheduled) by the DCI format, the indicated (multiple) TCI states are different from previously indicated (multiple) TCI states; or, for serving cells within the same serving cell list, for example, different serving cells and / or the same serving cell, the indicated (multiple) TCI states are different from previously indicated (multiple) TCI states. In one example, the TCI state indicated by the third DCI format carried by the third PDCCH differs from the TCI state indicated by the fourth DCI format carried by the fourth PDCCH. The third DCI format indicates (or schedules) the third serving cell, and the fourth DCI format indicates (or schedules) the fourth serving cell. The third and fourth serving cells belong to the same serving cell list. The third PDCCH (or the third DCI format) precedes the fourth PDCCH (or the fourth DCI format). For the TCI state indicated by the fourth DCI format, the TCI state indicated by the third DCI format is the previously indicated TCI state.

[0510] In some cases, for Mode B or Mode 2, the PUSCH resource is configured for higher-layer signaling, such as the CG PUSCH resource. The PUSCH carrying fourth information (e.g., the CG PUSCH) can be the earliest available CG PUSCH after X symbols following the PUCCH carrying second information, or a PUSCH that satisfies a first predefined condition. The available CG PUSCH or the first predefined condition can include at least one of the following:

[0511] 1) The PUSCH can be a PUSCH that does not overlap with the second predefined symbol.

[0512] 2) The PUSCH can be a PUSCH that does not overlap with inactive time.

[0513] 3) The PUSCH can be a PUSCH that does not overlap with a PUSCH carrying data (e.g., UL-SCH) on the same serving cell.

[0514] 4) The PUSCH can be a PUSCH that does not overlap with a higher priority PUCCH or PUSCH on the same serving cell.

[0515] 5) The PUSCH can be a PUSCH that does not overlap with the PUCCH retransmission.

[0516] 6) The PUSCH can be a PUSCH that does not overlap with the PUCCH carrying the SR.

[0517] It should be noted that the second predefined symbol can be specified by the protocol and / or configured by higher-level signaling. For example, the second predefined symbol can be at least one of the following.

[0518] 1) Downlink symbols with semi-static configuration (higher-layer signaling configuration) (e.g., downlink symbols configured by 3GPP parameters tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated).

[0519] 2) The symbol for SSB (Synchronization Signal Block).

[0520] 3) The symbol for CORESET0. For example, CORESET0 is a CORESET associated with a Type0-PDCCH CSS set.

[0521] It should be noted that the inactivity time can be the inactivity time of a DRX (e.g., a C-DRX). The inactivity time can also be the inactivity time of the cell DRX of the serving cell where the PUSCH resides.

[0522] This method can prevent the fourth information from being canceled during transmission, thus improving the reliability of the fourth information transmission.

[0523] In some implementations, if the PUSCH does not meet the first predefined condition, it may not be sent. The PUSCH can be a PUSCH without HARQ-ACK information; that is, if the PUSCH carries HARQ-ACK information, it will still be sent even if the first predefined condition is not met. The PUSCH will only not be sent if it does not carry HARQ-ACK information and the first predefined condition is not met. It should be noted that the UE can first perform UCI multiplexing (or resolve overlapping uplink channel conflicts) and then determine whether to send the PUSCH. In other words, the above UE behavior occurs after the UE has completed UCI multiplexing (or resolved overlapping uplink channel conflicts). This ensures the reliability of the HARQ-ACK information and reduces transmission latency.

[0524] Figure 11 A flowchart of a method 1100 performed by a UE according to some embodiments of the present disclosure is shown.

[0525] refer to Figure 11 In operation S1110, the UE receives first information, which is used to configure or instruct CSI report configuration. The first information includes information related to the second RS, which includes information related to one or more second RS resources.

[0526] In operation S1120, the UE transmits a physical uplink channel carrying fourth information, wherein the fourth information includes index information of at least one second RS resource.

[0527] In operation S1130, the UE receives a PDCCH, wherein the DCI format carried by the PDCCH includes a TCI status field indicating the TCI status, wherein the TCI status is applied after the PDCCH if a first condition is met. The first condition includes: the RS resource corresponding to the TCI status is the same as one of the one or more second RS resources. For example, the TCI status is applied a second time after the PDCCH. For example, the PDCCH is not earlier than a first time after the physical uplink channel.

[0528] In some implementations, one or more of operations S1110 to S1130 may be performed based on the methods described in various embodiments of the present disclosure.

[0529] In some implementations, method 1100 may omit one or more of operations S1110 to S1130, or may include additional operations, such as those that can be performed by the UE as described in various embodiments of this disclosure.

[0530] Figure 12 A flowchart of a method 1200 performed by a base station according to some embodiments of the present disclosure is shown.

[0531] refer to Figure 12 In operation S1210, the base station sends first information to the UE. The first information is used to configure or instruct CSI report configuration. The first information includes information related to the second RS. The information related to the second RS includes information related to one or more second RS resources.

[0532] In operation S1220, the base station receives a physical uplink channel carrying fourth information from the UE, wherein the fourth information includes index information of at least one second RS resource.

[0533] In operation S1230, the base station sends a PDCCH to the UE. The PDCCH carries a DCI format including a TCI state field indicating the TCI state. The TCI state is applied after the PDCCH if a first condition is met. The first condition includes: the RS resource corresponding to the TCI state is the same as one of the one or more second RS resources. For example, the TCI state is applied a second time after the PDCCH. For example, the PDCCH is not earlier than a first time after the physical uplink channel.

[0534] In some implementations, one or more of operations S1210 to S1230 may be performed based on the methods described in various embodiments of this disclosure.

[0535] In some implementations, method 1200 may omit one or more of operations S1210 to S1230, or may include additional operations, such as those that can be performed by a base station according to various embodiments of this disclosure.

[0536] Those skilled in the art will understand that the illustrative embodiments described above are not intended to be limiting. It should be understood that any two or more of the embodiments disclosed herein can 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 disclosed herein, as generally described herein and illustrated in the accompanying drawings, can be arranged, substituted, combined, separated, and designed in a variety of different configurations, all of which are contemplated herein.

[0537] Those skilled in the art will understand that the various illustrative logic blocks, modules, circuits, and steps described herein can be implemented in hardware, software, or a combination of both. To clearly illustrate this interchangeability between hardware and software, the various illustrative components, blocks, modules, circuits, and steps are described above in the form of sets of functions. Whether such sets of functions are implemented in hardware or software depends on the specific application and the design constraints imposed on the overall system. Those skilled in the art may implement the described sets of functions in different ways for each specific application, but such design decisions should not be construed as departing from the scope of this application.

[0538] The various illustrative logic blocks, modules, and circuits described in this application may be implemented or performed using a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but in alternatives, 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.

[0539] The steps of the methods or algorithms described in this application may be embodied directly in hardware, in a software module executed by a processor, or in a combination of both. The software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor so that the processor can read and write information to / from the storage medium. In an alternative, the storage medium may be integrated into the processor. The processor and storage medium may reside in an ASIC. The ASIC may reside in a communication device (e.g., a terminal or base station). In an alternative, the processor and storage medium may reside as discrete components in the communication device (e.g., a terminal or base station).

[0540] In one or more exemplary designs, the functionality may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functionality may be stored or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media, the latter including any medium that facilitates the transfer of a computer program from one location to another. Storage media may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0541] The above description is merely an exemplary embodiment 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, comprising: Receive first information, the first information being used to configure or indicate channel state information (CSI) report configuration, the first information including second reference signal (RS) related information, the second RS related information including one or more second RS resource related information; Transmit a physical uplink channel carrying fourth information, wherein the fourth information includes index information of at least one second RS resource; The Physical Downlink Control Channel (PDCCH) is received, wherein the DCI format carried by the PDCCH includes a TCI status field indicating the Transmission Configuration Indication (TCI) status, and the PDCCH is not earlier than a first time after the Physical Uplink Channel, wherein, under a first condition, the TCI status is applied a second time after the PDCCH. The first condition includes: the RS resource corresponding to the TCI state is the same as one of the one or more second RS resources.

2. The method according to claim 1, wherein, When the TCI state is applied a second time after the PDCCH: The TCI state is applied in the first time unit after the second time following the PDCCH.

3. The method according to claim 1, wherein, When the TCI state is applied a second time after the PDCCH: The earliest time unit after the second time following the PDCCH is applied to the TCI state.

4. The method according to claim 2 or 3, wherein, The time unit is a time slot.

5. The method according to any one of claims 2-4, wherein, The time unit refers to the time unit of the serving cell where the PDCCH is located.

6. The method according to claim 1, wherein, The first information includes first serving cell index information, where the first serving cell is the serving cell to which the TCI state is applied.

7. The method according to claim 6, wherein, The first condition includes that the RS resource corresponding to the TCI status indicated by the TCI status field in the DCI format carried by the PDCCH is the same as one of the one or more second RS resources, and the serving cell indicated by the DCI format is the same as the first serving cell.

8. The method according to claim 1, wherein, The first information includes a list of serving cells, wherein the serving cells in the list are the serving cells to which the TCI status is applied.

9. The method according to claim 8, wherein, The first condition includes that the RS resource corresponding to the TCI status indicated by the TCI status field in the DCI format carried by the PDCCH is the same as one of the one or more second RS resources, and the serving cell indicated by the DCI format is a serving cell in the serving cell list.

10. The method according to claim 1, wherein, The first condition includes: the TCI status switching field in the DCI format carried by the PDCCH indicates confirmation of the switch.

11. The method according to claim 6, wherein, The first condition includes: the TCI status handover field in the DCI format carried by the PDCCH indicates confirmation of handover, and the serving cell indicated by the DCI format is the same as the first serving cell.

12. The method according to claim 1 or 8, wherein, The first condition includes: the TCI status handover field in the DCI format carried by the PDCCH indicates confirmation of handover, and the serving cell indicated by the DCI format is a serving cell in the serving cell list.

13. The method according to claim 1, wherein, The information related to the one or more second RS resources includes at least one of the following: an identifier (ID) for each of the one or more second RS resources; a bandwidth portion (BWP) for each second RS resource; and the serving cell for each second RS resource.

14. The method according to claim 1, wherein, The RS resources include at least one of the following: Non-zero power (NZP) - Channel state information (CSI) - RS resource; CSI - Interference measurement (IM) - resource; CSI - Synchronization signal block (SSB) - resource.

15. The method according to claim 1, wherein, The first time is based on at least one of the following: the time for the base station to decode the fourth information; or the time for the base station to schedule the PDCCH.

16. The method according to claim 1 or 15, wherein, The first time, it is reported through higher-layer signaling configuration or through UE capabilities.

17. The method according to claim 1, wherein, The second time is based on at least one of the following: the time for the UE to decode the PDCCH; or the time for the UE to perform beam switching.

18. A method performed by a base station in a communication system, comprising: Send first information to user equipment (UE), the first information configuring or indicating channel state information (CSI) report configuration, the first information including information related to a second reference signal (RS), the second RS-related information including information related to one or more second RS resources; The UE receives a physical uplink channel carrying fourth information, wherein the fourth information includes index information of at least one second RS resource; A Physical Downlink Control Channel (PDCCH) is sent to the UE. The DCI format carried by the PDCCH includes a TCI status field indicating the Transmission Configuration Indication (TCI) status. The PDCCH is not earlier than a first time after the Physical Uplink Channel. Under a first condition, the TCI status is applied a second time after the PDCCH. The first condition includes: the RS resource corresponding to the TCI state is the same as one of the one or more second RS resources.

19. A user equipment (UE) in a communication system, comprising: transceiver; and One or more processors, coupled to the transceiver, are configured to perform the method as described in any one of claims 1-17.

20. A base station in a communication system, comprising: transceiver; and One or more processors, coupled to the transceiver, are configured to perform the method as described in claim 18.

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