Method and apparatus for channel state information reporting in wireless communication system

Abstract

A method and an apparatus for channel state information reporting in a wireless communication system are provided. The method comprises: receiving first configuration information and second configuration information, the first configuration information being used for indicating a resource for channel state information (CSI) reporting, and the second configuration information being used for indicating a sub-band full duplex (SBFD) symbol in a downlink symbol or a flexible symbol; determining an effective downlink time slot for CSI measurement based on the first configuration information and the second configuration information; and determining the CSI based on the determined effective downlink time slot, and sending the determined CSI. The present invention provides an enhanced CSI reporting method.

Description

Technical Field

[0001] The present disclosure relates to wireless communication technologies, and more particularly, to methods and apparatuses for channel state information (CSI) reporting in a wireless communication system. Background Art

[0002] In order to meet the increasing demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also 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., 60 GHz band) to achieve higher data rates. To reduce the propagation loss of radio waves and increase the transmission distance, beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive antenna technologies are discussed in 5G communication systems.

[0004] In addition, in 5G communication systems, developments for system network improvements are underway based on advanced small cells, cloud radio access network (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communication, coordinated multi-points (CoMP), receiver-side interference cancellation, etc.

[0005] In 5G systems, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) 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 have been developed. Summary of the Invention

[0006] According to some aspects of the present disclosure, a method performed by a terminal in a wireless communication system is provided. The method includes: receiving first configuration information and second configuration information, where the first configuration information is used to indicate resources for channel state information (CSI) reporting, and the second configuration information is used to indicate sub-band full-duplex (SBFD) symbols in downlink symbols or flexible symbols; determining an effective downlink time slot for CSI measurement based on the first configuration information and the second configuration information; and determining CSI based on the determined effective downlink time slot and sending the determined CSI.

[0007] In combination with one or more aspects of the method performed by the terminal described above, for example, determining an effective downlink time slot for CSI measurement based on the first configuration information and the second configuration information includes: determining the effective downlink time slot based on time slot n - n CSI_ref , where n is an index of an uplink time slot for sending the CSI determined based on the first configuration information, and where n CSI_ref is determined based on the first configuration information and the second configuration information, and where n CSI_ref is greater than or equal to the minimum value of the parameters related to the latency requirement and such that time slot n - n CSI_ref is an effective downlink time slot.

[0008] In combination with one or more aspects of the method performed by the terminal described above, for example, determining CSI based on the determined effective downlink time slot includes: measuring a reference signal in time slot n - n CSI_ref to obtain CSI.

[0009] In combination with one or more aspects of the method performed by the terminal described above, for example, a time slot that includes at least one downlink symbol or flexible symbol and is not included in the measurement interval for the UE is determined as the effective downlink time slot.

[0010] In combination with one or more aspects of the method performed by the terminal described above, for example, a time slot that includes at least one SBFD symbol and where the downlink active bandwidth part (BWP) is not fully included in the uplink frequency band and / or the guard band within the SBFD symbol is determined as the effective downlink time slot; or a time slot that includes at least one SBFD symbol and where the downlink active bandwidth part (BWP) is not fully included in the uplink frequency band and / or the guard band within the SBFD symbol and the effective downlink time slot is not included in the measurement interval for the UE is determined as the effective downlink time slot.

[0011] In combination with one or more aspects of the method performed by the terminal described above, for example, a time slot that includes at least one SBFD symbol and in which the ratio of the uplink frequency band and / or the guard band in the SBFD symbols included in the downlink active bandwidth part (BWP) is less than or equal to a first threshold value is determined as the valid downlink time slot; or a time slot that includes at least one SBFD symbol and in which the ratio of the uplink frequency band and / or the guard band in the SBFD symbols included in the downlink active bandwidth part (BWP) is less than or equal to a first threshold value and that is not included in the measurement interval for the UE is determined as the valid downlink time slot.

[0012] In combination with one or more aspects of the method performed by the terminal described above, for example, the method further includes: receiving third configuration information for configuring the one or more downlink symbols or the one or more flexible symbols, where the third configuration information includes time-division duplex (TDD) uplink (UL)-downlink (DL) common configuration information and / or TDD UL-DL dedicated configuration information.

[0013] In combination with one or more aspects of the method performed by the base station described above, for example, the second configuration information includes cell-common SBFD configuration information and / or UE-dedicated SBFD configuration information. According to some aspects of the present disclosure, there is provided a method performed by a base station in a wireless communication system. The method includes: sending first configuration information and second configuration information to a terminal, the first configuration information being used to indicate resources for channel state information (CSI) reporting, the second configuration information being used to indicate sub-band full-duplex (SBFD) symbols in downlink symbols or flexible symbols; and receiving CSI from the terminal, where the CSI is determined based on valid downlink time slots for CSI measurement, and the valid downlink time slots for CSI measurement are determined based on the first configuration information and the second configuration information.

[0014] In combination with one or more aspects of the method performed by the base station described above, for example, the valid downlink time slot is based on time slot n-n CSI_ref determined, where n is the index of the uplink time slot for sending the CSI determined based on the first configuration information, and n CSI_ref is determined based on the first configuration information and the second configuration information, and n CSI_ref is greater than or equal to the minimum value of the parameters related to the latency requirement and such that time slot n-n CSI_ref is a valid downlink time slot.

[0015] In combination with one or more aspects of the method performed by the base station described above, for example, the CSI is obtained by measuring the reference signal in time slot n-n CSI_ref .

[0016] In combination with one or more aspects of the method performed by the base station described above, for example, a time slot that includes at least one downlink symbol or flexible symbol and is not included in the measurement interval for the UE is determined as the valid downlink time slot.

[0017] In combination with one or more aspects of the method performed by the base station described above, for example, a time slot that includes at least one SBFD symbol and in which the downlink active bandwidth part (BWP) is not completely included in the uplink frequency band and / or the protection frequency band within the SBFD symbol is determined as the valid downlink time slot; or a time slot that includes at least one SBFD symbol and in which the downlink active bandwidth part (BWP) is not completely included in the uplink frequency band and / or the protection frequency band within the SBFD symbol and is not included in the measurement interval for the UE is determined as the valid downlink time slot.

[0018] In combination with one or more aspects of the method performed by the base station described above, for example, a time slot that includes at least one SBFD symbol and in which the ratio of the uplink frequency band and / or the protection frequency band in the SBFD symbol included in the downlink active bandwidth part (BWP) is less than or equal to a first threshold value is determined as the valid downlink time slot; or a time slot that includes at least one SBFD symbol and in which the ratio of the uplink frequency band and / or the protection frequency band in the SBFD symbol included in the downlink active bandwidth part (BWP) is less than or equal to a first threshold value and is not included in the measurement interval for the UE is determined as the valid downlink time slot.

[0019] In combination with one or more aspects of the method performed by the base station described above, for example, the method further includes: sending third configuration information for configuring the one or more downlink symbols or the one or more flexible symbols, where the third configuration information includes time division duplex (TDD) uplink (UL)-downlink (DL) common configuration information and / or TDD UL-DL dedicated configuration information.

[0020] In combination with one or more aspects of the method performed by the base station described above, for example, the second configuration information includes cell-common SBFD configuration information and / or terminal-dedicated SBFD configuration information.

[0021] According to some aspects of the present disclosure, a terminal in a wireless communication system is further provided. The terminal includes: a transceiver; and one or more processors coupled to the transceiver and configured to perform one or more aspects of the method performed by the terminal described above.

[0022] According to some aspects of the present disclosure, a base station in a wireless communication system is further provided. The base station includes: a transceiver; and one or more processors, coupled to the transceiver and configured to execute one or more aspects of the method performed by the base station as described above.

[0023] According to some aspects of the present disclosure, a computer-readable storage medium is further 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 method performed by the terminal as described above can be implemented.

[0024] According to some aspects of the present disclosure, a computer-readable storage medium is further 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 method performed by the base station as described above can be implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments of the present disclosure will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present disclosure and are not a limitation to the present disclosure. In the drawings:

[0026] Figure 1 A schematic diagram of an example wireless network according to some embodiments of the present disclosure is shown;

[0027] Figure 2A and Figure 2B An example wireless transmission and reception path according to some embodiments of the present disclosure is shown;

[0028] Figure 3A An example user equipment (UE) according to some embodiments of the present disclosure is shown;

[0029] Figure 3B An example gNB according to some embodiments of the present disclosure is shown;

[0030] Figure 4 A schematic diagram of an uplink-downlink configuration according to an exemplary embodiment of the present disclosure is shown;

[0031] Figure 5 A schematic diagram of the timing of a CSI report according to an exemplary embodiment of the present disclosure is shown;

[0032] Figure 6 A flowchart of a CSI report of a UE according to an exemplary embodiment of the present disclosure is shown;

[0033] Figure 7 A schematic diagram of an effective downlink time slot according to an exemplary embodiment of the present disclosure is shown;

[0034] Figure 8 A schematic diagram of an effective downlink time slot according to an exemplary embodiment of the present disclosure is shown;

[0035] Figure 9 A schematic diagram of an effective downlink time slot according to an exemplary embodiment of the present disclosure is shown;

[0036] Figure 10 A flowchart of a method performed by a terminal according to some embodiments of the present disclosure is shown;

[0037] Figure 11 A flowchart of a method performed by a base station according to some embodiments of the present disclosure is shown;

[0038] Figure 12 A block diagram of the configuration of a first node (e.g., a terminal) according to some embodiments of the present disclosure is shown;

[0039] Figure 13 A block diagram of the configuration of a second node (e.g., a base station) according to some embodiments of the present disclosure is shown. Detailed implementation manners

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0041] Before describing the following detailed embodiments, it may be advantageous to set forth definitions of 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, whether or not these elements are in physical contact with each other. The terms "send", "receive", and "communicate" and their derivatives cover both direct and indirect communication. The terms "comprise" and "include" and their derivatives mean including but not limited to. The term "or" is inclusive and means and / or. The phrase "associated with" and its derivatives mean including, included within, connected to, interconnected with, containing, contained within, connected to or coupled with, capable of communicating with, cooperating with, interlacing, juxtaposing, proximate to, bound to or bound with, having, having the attribute of, having a relationship with or having a relationship to, etc. The term "controller" means any device, system, or part thereof that controls at least one operation. Such a controller may be implemented in hardware, or in a combination of hardware and software and / or firmware. The functions associated with any particular controller may be centralized or distributed locally or remotely. The phrase "at least one of" when used with a list of items means that different combinations of one or more of the listed items may be used, and only one item in the list may be required. For example, "at least one of A, B, and C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, and A and B and C. For example, "at least one of A, B, or C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, and A and B and C.

[0042] In addition, in the description of the exemplary embodiments of the present disclosure, " / " means "and / or". For example, "A / B" may refer to A and / or B.

[0043] In addition, the various functions described below can be implemented or supported by one or more computer programs, each formed from computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, processes, functions, objects, classes, instances, related 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 drives, compact discs (CDs), digital video discs (DVDs), or any other type of memory. A "non-transitory" computer-readable medium excludes wired, wireless, optical, or other communication links that transmit transitory electrical or other signals. Non-transitory computer-readable media include media that can permanently store data and media that can store and later rewrite data, such as rewritable optical discs or erasable memory devices.

[0044] The terms used herein to describe embodiments of the present invention are not intended to limit and / or define the scope of the present invention. For example, unless otherwise defined, technical terms or scientific terms used in this disclosure should have the ordinary meaning as understood by those of ordinary skill in the art to which the present invention pertains.

[0045] It should be understood that the "first", "second", and similar terms used in this disclosure do not denote any order, quantity, or importance, but are merely used to distinguish different components. Unless the context clearly indicates otherwise, singular forms such as "a", "an", or "the" do not denote a limitation of quantity, but rather indicate the presence of at least one. For example, a reference to "a component surface" includes a reference to one or more such surfaces.

[0046] As used herein, any reference to "an example" or "examples", "an embodiment" or "embodiments" means that the particular element, feature, structure, or property described in connection with that embodiment is included in at least one embodiment. The phrases "in an embodiment" or "in an example" that appear in different places in the specification do not necessarily refer to the same embodiment.

[0047] As used herein, "a part of" something means "at least some of" that something, and thus may mean less than all or all of that something. Thus, "a part of" something includes the whole thing as a special case, i.e., the whole thing is an example of a part of something.

[0048] As used herein, the term "set" means one or more. Thus, a set of items can be a single item or a set of two or more items.

[0049] In this disclosure, for determining whether a particular condition is met, expressions such as "greater than" or "less than" are used as examples, 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.

[0050] It will be further understood that terms such as "comprising" or "including" and the like mean that the elements or items appearing before that word cover the elements or items listed after that word and their equivalents, without excluding other elements or items. Terms such as "connected" or "coupled" and the like are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper", "lower", "left", "right" etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0051] The various embodiments discussed below for describing the principles of the present disclosure in this patent document are for illustration only and should not be construed in any way as limiting the scope of the present disclosure. Those skilled in the art will understand that the principles of the present disclosure can be implemented in any appropriately arranged wireless communication system. For example, although the following detailed description of the exemplary embodiments of the present disclosure will be directed to LTE and 5G communication systems, those skilled in the art can understand that, without substantially departing from the scope of the present disclosure, the main points of the present disclosure can also be applied to other communication systems with similar technical backgrounds and channel formats with minor modifications. The technical solutions of the embodiments of the present application can be applied to various communication systems. For example, the communication system can include a global system for mobile communications (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) system, a general packet radio service (GPRS), a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), a universal mobile telecommunication system (UMTS), a worldwide interoperability for microwave access (WiMAX) communication system, a fifth generation (5G) system, or a new radio (NR), etc. In addition, the technical solutions of the embodiments of the present application can be applied to future-oriented communication technologies.

[0052] Next, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that the same reference numerals in different drawings will be used to refer to the same elements that have been described.

[0053] The text and the drawings are provided only as examples to assist the reader in understanding the present disclosure. They are not intended and should not be construed as limiting the scope of the present 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 can be made to the illustrated embodiments and examples without departing from the scope of the present disclosure.

[0054] The following Figures 1 - 3B describes various embodiments implemented by using orthogonal frequency division multiplexing (OFDM) or orthogonal frequency division multiple access (OFDMA) communication techniques in a wireless communication system. Figures 1 - 3B The description does not imply any physical or architectural suggestions about the ways in which different embodiments can be implemented. Different embodiments of the present disclosure can be implemented in any appropriately arranged communication system.

[0055] Figure 1 Illustrates an example wireless network 100 according to some embodiments of the present disclosure. Figure 1 The embodiments of the wireless network 100 shown are for illustrative purposes only. Other embodiments of the wireless network 100 can be used without departing from the scope of the present disclosure.

[0056] The 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 networks).

[0057] Depending on the network type, other well-known terms such as "base station" or "access point" can be used in place 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. Also, 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 in place 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 generally considered fixed device (such as a desktop computer or vending machine).

[0058] gNB 102 provides wireless broadband access to network 130 for a first plurality of user equipments (UEs) within coverage area 120 of gNB 102. The first plurality of UEs includes: 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); UE 116, which may be a mobile device (M), such as a cellular phone, a wireless laptop computer, a wireless PDA, etc. gNB 103 provides wireless broadband access to network 130 for a second plurality of UEs within coverage area 125 of gNB 103. The second plurality of UEs includes 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, Long Term Evolution (LTE), LTE - A, WiMAX, or other advanced wireless communication technologies.

[0059] The dashed lines illustrate the approximate extent of coverage areas 120 and 125, which are shown as approximately circular merely for purposes of illustration and explanation. It should be clearly understood that the coverage areas associated with gNBs, such as coverage areas 120 and 125, can have other shapes, including irregular shapes, depending on the configuration of the gNB and changes in the radio environment associated with natural and man - made obstacles.

[0060] 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 the present disclosure. In some embodiments, one or more of gNB 101, gNB 102, and gNB 103 support codebook design and structure for systems having a 2D antenna array.

[0061] Although Figure 1 an example of wireless network 100 is shown, various changes can be made to Figure 1 it. For example, wireless network 100 can include any number of gNBs and any number of UEs arranged in any suitable manner. And, gNB 101 can communicate directly with any number of UEs and provide wireless broadband access to network 130 for those UEs. Similarly, each of gNBs 102 - 103 can communicate directly with network 130 and provide direct wireless broadband access to network 130 for UEs. In addition, gNBs 101, 102, and / or 103 can provide access to other or additional external networks, such as an external telephone network or other types of data networks.

[0062] Figure 2A and Figure 2BShows an example wireless transmit and receive path according to some embodiments of the present disclosure. In the following description, the transmit path 200 can be described as being implemented in a gNB (such as gNB 102), while the receive path 250 can be described as being implemented in a UE (such as UE 116). However, it should be understood that the receive path 250 can be implemented in a gNB, and the transmit path 200 can be implemented in a UE. In some embodiments, the receive path 250 is configured to support codebook design and structure for a system with a 2D antenna array as described in the embodiments of the present disclosure.

[0063] 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 upconverter (UC) 230. The receive path 250 includes a downconverter (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.

[0064] In the transmit path 200, the channel coding and modulation block 205 receives a set of information bits, applies coding (such as low-density parity-check (LDPC) coding), and modulates the input bits (such as using quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) to generate a sequence of frequency-domain modulation symbols. The serial-to-parallel (S-to-P) block 210 converts (such as demultiplexes) the serial modulation 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. The N-point IFFT block 215 performs an IFFT operation on the N parallel symbol streams to generate a time-domain output signal. The parallel-to-serial block 220 converts (such as multiplexes) the parallel time-domain output symbols from the N-point IFFT block 215 to generate a serial time-domain signal. The cyclic prefix addition block 225 inserts a cyclic prefix into the time-domain signal. The upconverter 230 modulates (such as upconverts) the output of the cyclic prefix addition block 225 to an RF frequency for transmission via a wireless channel. The signal can also be filtered at baseband before being converted to the RF frequency.

[0065] The RF signal transmitted from gNB 102 reaches UE 116 after passing through the wireless channel, and operations opposite to those at gNB 102 are performed at UE 116. Downconverter 255 downconverts the received signal to baseband frequency, and cyclic prefix 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 to a parallel time-domain signal. N-point FFT block 270 performs the FFT algorithm to generate N parallel frequency-domain signals. Parallel-to-serial block 275 converts the parallel frequency-domain signals to 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.

[0066] Each of gNBs 101-103 may implement a transmit path 200 similar to that for transmitting to UEs 111-116 in the downlink, and may implement a receive path 250 similar to that for receiving from UEs 111-116 in the uplink. Similarly, each of UEs 111-116 may implement a transmit path 200 for transmitting to gNBs 101-103 in the uplink, and may implement a receive path 250 for receiving from gNBs 101-103 in the downlink.

[0067] Figure 2A and Figure 2B each of the components in 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 in can be implemented in software, while other components can be implemented by configurable hardware or a hybrid of software and configurable hardware. For example, FFT block 270 and IFFT block 215 can be implemented as configurable software algorithms, where the value of the number of points N can be modified according to the implementation.

[0068] Furthermore, although described as using FFT and IFFT, this is merely illustrative and should not be construed as limiting the scope of the present disclosure. Other types of transforms can be used, such as discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT) functions. It should be understood that for DFT and IDFT functions, the value of the variable N can be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of the variable N can be any integer that is a power of 2 (such as 1, 2, 4, 8, 16, etc.).

[0069] Although Figure 2A and Figure 2B show examples of wireless transmit and receive paths, various changes can be made to Figure 2A and Figure 2B For example,Figure 2A and Figure 2B The various components in can be combined, further subdivided, or omitted, and additional components can be added according to specific needs. Moreover, Figure 2A and Figure 2B are intended to show examples of types of transmit and receive paths that can be used in a wireless network. Any other suitable architecture can be used to support wireless communication in a wireless network.

[0070] Figure 3A FIG. shows an example UE 116 according to some embodiments of the present disclosure. Figure 3A The embodiment of UE 116 shown in is for illustration 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 the scope of the present disclosure is not limited to any particular implementation of UEs.

[0071] UE 116 includes an antenna 305, a radio frequency (RF) transceiver 310, a transmit (TX) processing circuit 315, a microphone 320, and a receive (RX) processing circuit 325. UE 116 also includes a speaker 330, a processor / controller 340, an input / output (I / O) interface 345, one or more input devices 350, a display 355, and a memory 360. The memory 360 includes an operating system (OS) 361 and one or more applications 362.

[0072] The RF transceiver 310 receives incoming RF signals transmitted by the gNB of the wireless network 100 from the antenna 305. The RF transceiver 310 down-converts the incoming RF signals to generate intermediate frequency (IF) or baseband signals. The IF or baseband signals are sent to the RX processing circuit 325, where the RX processing circuit 325 generates processed baseband signals by filtering, decoding, and / or digitizing the baseband or IF signals. The RX processing circuit 325 sends the processed baseband signals to the speaker 330 (such as for voice data) or to the processor / controller 340 (such as for web browsing data) for further processing.

[0073] The TX processing circuit 315 receives analog or digital voice data from the microphone 320, or other outgoing baseband data (such as network data, email, or interactive video game data) from the processor / controller 340. The TX processing circuit 315 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate processed baseband or IF signals. The RF transceiver 310 receives the outgoing processed baseband or IF signals from the TX processing circuit 315 and up-converts the baseband or IF signals to RF signals transmitted via the antenna 305.

[0074] The processor / controller 340 can include one or more processors or other processing devices and execute the OS 361 stored in the memory 360 to control the overall operation of the UE 116. For example, the processor / controller 340 can control the reception of forward channel signals and the transmission of reverse channel signals through the RF transceiver 310, the RX processing circuit 325, and the TX processing circuit 315 according to well-known principles. In some embodiments, the processor / controller 340 includes at least one microprocessor or microcontroller.

[0075] The processor / controller 340 can also execute other processes and programs residing in the memory 360, such as operations for channel quality measurement and reporting for a system with a 2D antenna array as described in embodiments of the present disclosure. The processor / controller 340 can move data into or out of the memory 360 as needed for executing processes. In some embodiments, the processor / controller 340 is configured to execute the application 362 based on the OS 361 or in response to signals received from the gNB or the operator. The processor / controller 340 is also coupled to the I / O interface 345, where the I / O interface 345 provides the UE 116 with the ability to connect to other devices such as laptop computers and handheld computers. The I / O interface 345 is the communication path between these accessories and the processor / controller 340.

[0076] The processor / controller 340 is also coupled to the (one or more) input devices 350 and the display 355. The operator of the UE 116 can use the (one or more) input devices 350 to input data into the UE 116. The display 355 can be a liquid crystal display or other display capable of presenting text and / or at least limited graphics (such as from a website). The memory 360 is coupled to the processor / controller 340. A portion of the memory 360 can include random access memory (RAM), while another portion of the memory 360 can include flash memory or other read-only memory (ROM).

[0077] Although Figure 3A an example of the UE 116 is shown, various changes can be made to Figure 3A it. For example, Figure 3A the various components in Figure 3A can be combined, further subdivided, or omitted, and additional components can be added according to specific needs. As a specific example, the processor / controller 340 can be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Moreover, although

[0078] In some embodiments, 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 communicating 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, etc.), mesh networks, etc. In such cases, UEs 116 may perform scheduling operations, resource selection operations, and / or other operations performed by a base station described elsewhere herein. For example, a 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)).

[0079] Figure 3B FIG. shows an example gNB 102 according to some embodiments of the present disclosure. Figure 3B The embodiment of the gNB 102 shown in is for illustration only, and Figure 1 other gNBs can have the same or similar configurations. However, gNBs have a wide variety of configurations, and Figure 3B do not limit the scope of the present disclosure to any particular implementation of the gNB. It should be noted that gNB 101 and gNB 103 can include structures the same as or similar to those of gNB 102.

[0080] As Figure 3B shown in, gNB 102 includes a plurality of antennas 370a - 370n, a plurality of RF transceivers 372a - 372n, transmit (TX) processing circuitry 374, and receive (RX) processing circuitry 376. In certain embodiments, one or more of the plurality of antennas 370a - 370n include a 2D antenna array. gNB 102 also includes a controller / processor 378, a memory 380, and a backhaul or network interface 382.

[0081] RF transceivers 372a - 372n receive incoming RF signals from antennas 370a - 370n, such as signals transmitted by UEs or other gNBs. 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, where RX processing circuitry 376 generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. RX processing circuitry 376 sends the processed baseband signal to controller / processor 378 for further processing.

[0082] The TX processing circuitry 374 receives analog or digital data (such as voice data, network data, e-mail, or interactive video game data) from the controller / processor 378. The TX processing circuitry 374 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceivers 372a - 372n receive the outgoing processed baseband or IF signal from the TX processing circuitry 374 and upconvert the baseband or IF signal into an RF signal transmitted via the antennas 370a - 370n.

[0083] The controller / processor 378 can include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 378 can control the reception of forward channel signals and the transmission of reverse channel signals via the RF transceivers 372a - 372n, the RX processing circuitry 376, and the TX processing circuitry 374 according to well-known principles. The controller / processor 378 can also support additional functions, such as more advanced wireless communication functions. For example, the controller / processor 378 can perform a BIS process, such as by executing a BIS algorithm through blind interference sensing (BIS), and decode the received signal with the interference signal subtracted. The controller / processor 378 can support any one of a variety of other functions in the gNB 102. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0084] The controller / processor 378 can also execute programs and other processes residing in the memory 380, such as a basic OS. The controller / processor 378 can also support channel quality measurement and reporting for a system with a 2D antenna array as described in embodiments of the present disclosure. In some embodiments, the controller / processor 378 supports communication between entities such as web RTC. The controller / processor 378 can move data into or out of the memory 380 as needed for the execution process.

[0085] 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 via 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 technology or NR, LTE, or LTE-A), the backhaul or network interface 382 is capable of allowing 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 is capable of allowing 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 structure(s) supporting communication via a wired or wireless connection, such as an Ethernet or RF transceiver.

[0086] A memory 380 is coupled to the controller / processor 378. A portion of the memory 380 can include RAM, while another portion of the memory 380 can include flash memory or other ROM. In some embodiments, a plurality of instructions, such as BIS algorithms, are stored in the memory. The plurality of instructions are configured to cause the controller / processor 378 to perform a BIS process and decode a received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0087] As described in more detail below, the transmit and receive paths of the gNB 102 (implemented using the RF transceivers 372a - 372n, the TX processing circuitry 374, and / or the RX processing circuitry 376) support communication aggregated with FDD cells and TDD cells.

[0088] Although Figure 3B an example of the gNB 102 is shown, various changes can be made to Figure 3B it. For example, the gNB 102 can include any number of Figure 3A each of the components shown in. As a specific example, an access point can include a number of backhaul or network interfaces 382, and the controller / processor 378 can support routing functions to route data between different network addresses. As another specific example, although shown as including a single instance of the TX processing circuitry 374 and a single instance of the RX processing circuitry 376, the gNB 102 can include multiple instances of each (such as one for each RF transceiver).

[0089] Those skilled in the art of the present technology can understand that the "terminal" and "terminal device" used herein include both devices with a wireless signal receiver that only has the ability to receive without transmitting, and hardware devices with both receiving and transmitting capabilities that can perform two-way communication on a two-way communication link. Such devices may include: cellular or other communication devices with a single-line display or a multi-line display or cellular or other communication devices without a multi-line display; PCS (Personal Communication System), which can combine voice, data processing, fax, and / or data communication capabilities; PDA (Personal Digital Assistant), which may include a radio frequency receiver, a pager, Internet / intranet access, a web browser, a notepad, a calendar, and / or a GPS (Global Positioning System) receiver; conventional laptop and / or palm computers or other devices with and / or including a radio frequency receiver. The "terminal" and "terminal device" used herein can be portable, transportable, installed in a vehicle (air, sea, and / or land), or suitable for and / or configured to operate locally and / or in a distributed manner at any other location on the earth and / or in space. The "terminal" and "terminal device" used herein can also be a communication terminal, an Internet access terminal, 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 can also be devices such as a smart TV, a set-top box, etc.

[0090] Exemplary embodiments of the present 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.

[0091] When describing a wireless communication system and in the present disclosure described below, the method (or configuration method) for transmitting higher-layer signaling or higher-layer signals may be a signal transmission method for transmitting information from a base station to a terminal through a downlink data channel of the physical layer or for transmitting information from a terminal to a base station through an uplink data channel of the physical layer, and examples of the signal transmission method may include a signal transmission method for transmitting information through radio resource control (RRC) signaling, packet data convergence protocol (PDCP) signaling, or medium access control (MAC) control element (CE).

[0092] In the description of the exemplary embodiments of the present disclosure, the high-layer signaling may be a signaling corresponding to at least one of the following signaling or a combination of one or more of them.

[0093] - MIB (Master Information Block)

[0094] - SIB (System Information Block) or SIB X (X = 1, 2,...)

[0095] - RRC signaling

[0096] - MAC CE

[0097] The physical layer (Layer 1 (L1)) signaling may be a signaling corresponding to at least one of the following signaling or a combination of one or more of them.

[0098] - PDCCH (Physical Downlink Control Channel)

[0099] - DCI (Downlink Control Information)

[0100] - UE-specific DCI

[0101] - Group-common DCI

[0102] - Common DCI (e.g., multicast DCI)

[0103] - Scheduling DCI (e.g., DCI for scheduling downlink or uplink data)

[0104] - Non-scheduling DCI (e.g., DCI other than DCI for scheduling downlink or uplink data)

[0105] - PUCCH (Physical Uplink Control Channel)

[0106] - UCI (Uplink Control Information)

[0107] - Paging

[0108] - PRACH (Physical Random Access Channel)

[0109] - RAR (Random Access Response)

[0110] In the description of the exemplary embodiments of the present disclosure, the uplink control signaling may include physical layer signaling and / or high-layer signaling. As described above, the physical layer signaling may include UCI and / or PUCCH and / or PRACH, and the high-layer signaling may include RRC signaling and / or MAC CE.

[0111] In the description of the exemplary embodiments of the present disclosure, the downlink control signaling may include physical layer signaling and / or higher layer signaling. As described above, the physical layer signaling may include one or more of PDCCH, DCI, UE-specific DCI, group common DCI, common DCI, scheduling DCI (e.g., DCI for scheduling downlink or uplink data), non-scheduling DCI, Paging, RAR, and the higher layer signaling may include one or more of MIB, SIB or SIB X (X = 1, 2, …), RRC signaling or MAC CE. Therefore, "configuring or indicating X through the downlink control signaling" will be understood as configuring or indicating X through the physical layer signaling, or configuring or indicating X through the higher layer signaling, or configuring or indicating X through a combination of the higher layer signaling and the physical layer signaling.

[0112] It should be noted that, unless otherwise clearly indicated by the context, all or one or more of the methods, steps or operations described in the exemplary embodiments of the present disclosure may be configured and / or indicated by protocol provisions and / or higher layer signaling and / or dynamic signaling. The dynamic signaling may be PDCCH and / or DCI and / or DCI format. For example, for semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) and / or configured grant (CG) physical uplink shared channel (PUSCH), it may be dynamically indicated in its activation DCI / DCI format / PDCCH. All or one or more of the described methods, steps and operations may be optional. For example, if a certain parameter (e.g., parameter X) is configured, the UE executes a certain method (e.g., method A), otherwise (if the parameter is not configured, e.g., parameter X), the UE executes another method (e.g., method B). If not otherwise specified, the parameters in the embodiments of the present disclosure may be higher layer parameters. For example, the higher layer parameter may be a parameter configured or indicated by higher layer signaling (e.g., RRC signaling).

[0113] It should be noted that the multiple methods described in the exemplary embodiments of the present disclosure may be combined in any order. In a combination, a method may be executed once or multiple times.

[0114] It should be noted that the multiple steps in the methods described in the exemplary embodiments of the present disclosure may be implemented in any order.

[0115] It should be noted that in the exemplary embodiments of the present disclosure, "when a predefined condition is satisfied, execute a predefined method (or step)" and "when the predefined condition is not satisfied, do not execute the predefined method (or step)" may be used interchangeably. "When a predefined condition is satisfied, do not execute the predefined method (or step)" and "when the predefined condition is not satisfied, execute the predefined method (or step)" may be used interchangeably.

[0116] In the description of the exemplary embodiments of the present disclosure, a resource (which may also be referred to as a physical resource) may include a time-domain resource (or a time resource) and / or a frequency-domain resource (or a frequency resource).

[0117] In the description of the exemplary embodiments of the present disclosure, the "time-domain resource" or the "time resource" may refer to at least one of the following or be used interchangeably with at least one of the following: (a plurality of) symbols (e.g., OFDM symbols), (a plurality of) time slots, (a plurality of) sub-time slots, (a plurality of) mini-slots, or (a plurality of) sub-frames.

[0118] In the description of the exemplary embodiments of the present disclosure, a "time unit" may refer to a unit of the "time-domain resource" or the "time resource".

[0119] In the description of the exemplary embodiments of the present disclosure, the "frequency-domain resource" or the "frequency resource" may refer to at least one of the following or be used interchangeably with at least one of the following: (a plurality of) channels, (a plurality of) sub-channels, (a plurality of) carriers, (a plurality of) sub-carriers, (a plurality of) resource blocks (RBs), (a plurality of) resource elements (REs), (a plurality of) physical resource blocks (PRBs), or (a plurality of) resource block groups (RBGs).

[0120] In the description of the exemplary embodiments of the present disclosure, a "frequency unit" may refer to a unit of the "frequency-domain resource" or the "frequency resource".

[0121] Hereinafter, various exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0122] A communication system may include time-division duplex (TDD), frequency-division duplex (FDD), and full-duplex systems. In TDD, time-division multiplexing is used to separate transmissions in different directions on a given channel from each other. In FDD, transmissions in different directions may operate at different carrier frequencies (e.g., within a paired spectrum). Full-duplex communication may be achieved within an unpaired spectrum (e.g., within a single carrier bandwidth), where transmissions in different directions (e.g., uplink communication and downlink communication) occur in different sub-bands of the carrier bandwidth (e.g., the BWP of the carrier bandwidth). This type of full-duplex communication may be referred to as sub-band full-duplex (SBFD) herein and may also be referred to as flexible duplex.

[0123] In a communication system (e.g., a TDD system), a base station may configure uplink and downlink attributes (or uplink and downlink transmission directions) in different time resources (e.g., individual time resources) on a carrier (the term "carrier" may be used interchangeably with "cell" or "serving cell") through semi-static signaling and / or dynamic signaling, where the uplink and downlink attributes (or uplink and downlink transmission directions) of each time resource may include uplink, downlink, or flexible. For example, time resources may include subframes, time slots, sub-time slots, symbols, and / or the like. For example, the base station may configure uplink time slots / symbols (such as OFDM symbols) (for uplink transmission), downlink time slots / symbols (for downlink transmission), and flexible time slots / symbols (for uplink or downlink transmission) on a carrier through semi-static signaling and / or dynamic signaling. In a communication system (e.g., an FDD system), the base station may configure different time resources (e.g., individual time resources) of the uplink carrier in a pair of uplink and downlink carriers as uplink time slots / symbols or flexible time slots / symbols, and configure different time resources (e.g., individual time resources) of the downlink carrier as downlink transmission time slots / symbols or flexible time slots / symbols. As an example, in a time slot of a downlink frame, the UE will assume / think that downlink transmission only occurs in "downlink" symbols or "flexible" symbols. As an example, in a time slot of an uplink frame, the UE will transmit only in "uplink" or "flexible" symbols.

[0124] In some embodiments, the semi-static signaling may be high-layer signaling (e.g., radio resource control (RRC) signaling or other high-layer signaling described in the exemplary embodiments of the present disclosure). The dynamic signaling may be downlink control information (DCI) (e.g., carried by a physical downlink control channel (PDCCH)). For example, the dynamic signaling may be group common DCI that does not schedule a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH, Physical Uplink Shared Channel). The dynamic signaling may also be DCI that schedules a physical downlink shared channel (PDSCH, Physical Downlink Shared Channel) and a physical uplink shared channel (PUSCH, Physical Uplink Shared Channel). Alternatively, the dynamic signaling may be other dynamic signaling described in the exemplary embodiments of the present disclosure.

[0125] Compared with the FDD system, in the TDD system, since the uplink and downlink transmissions are time-division multiplexed, the time delay of the uplink or downlink transmission is relatively large. For example, according to a certain uplink-downlink configuration, in a 10 ms (millisecond) period, only 1 ms of time slots are for uplink transmission, and the other time slots are for downlink transmission or flexible transmission. The maximum time delay of the uplink transmission is 10 ms. To reduce the transmission delay, it can be considered to configure a part of the frequency domain resources in a carrier as uplink transmission and another part as downlink transmission. The mutual influence (uplink-downlink interference) between the uplink and downlink transmissions in the same carrier can be reduced by setting a guard interval.

[0126] In a communication system, a UE can receive a reference signal, perform channel measurement based on the reference signal, and estimate the channel state based on the channel measurement to obtain channel state information (CSI). The UE can determine (e.g., calculate or derive) CSI parameters and send a CSI report including the CSI parameters. In the embodiments of the present disclosure, CSI-RS is taken as an example to illustrate the reference signal. However, the embodiments of the present disclosure are not limited thereto, and the reference signal for measurement can also be other types of reference signals, such as demodulation reference signal (DM-RS) or phase tracking reference signal (PT-RS). CSI can include one or more of the following: channel quality indicator (CQI), precoding matrix indicator (PMI), CSI-RS resource indicator (CRI), synchronization signal (SS) / physical broadcast channel (PBCH) block resource indicator (SSBRI), layer indicator (LI), rank indicator (RI), reference signal received power (RSRP), or signal-to-interference-plus-noise ratio (SINR).

[0127] For full-duplex communication, it is necessary to enhance the CSI-related processes, such as the method of determining CSI or reporting CSI parameters, etc., to improve the performance of CSI feedback.

[0128] The exemplary embodiments of the present disclosure provide an enhanced CSI feedback method. Based on the uplink-downlink transmission mode described in the exemplary embodiments of the present disclosure, the transmission performance of data can be guaranteed and resources can be utilized as fully as possible on the premise of ensuring the data transmission performance.

[0129] In the TDD system, the base station can indicate that a time unit (e.g., a time unit can include one or more time slots, or one or more symbols) is an uplink time slot / symbol, or a downlink time slot / symbol, or a flexible time slot / symbol. In the description of the exemplary embodiments of the present disclosure, "time unit", "(multiple) time slots", "(multiple) symbols" can be used interchangeably.

[0130] The UE can determine the uplink / downlink transmission directions of each symbol / slot of a carrier / service cell according to the indication of the base station. For example, the UE can receive cell common signaling (e.g., cell common UL / DL information such as tdd-UL-DL-ConfigurationCommon) to determine whether a time unit is an uplink slot / symbol, or a downlink slot / symbol, or a flexible slot / symbol. For another example, the UE can receive UE-specific signaling (e.g., UE-specific UL / DL information such as tdd-UL-DL-ConfigurationDedicated) to determine whether a time unit is an uplink slot / symbol, or a downlink slot / symbol, or a flexible slot / symbol.

[0131] To allocate uplink / downlink transmission resources more efficiently, the granularity of uplink / downlink transmission resources can be further reduced from all the frequency domain resources of a symbol / slot to partial frequency domain resources within a symbol / slot through configuration information (e.g., semi-static signaling such as high-layer signaling). For example, different frequency domain resources in a symbol of a carrier / service cell can be configured with different transmission directions. The configuration information (e.g., semi-static signaling such as high-layer signaling) can include cell common UL / DL information (e.g., tdd-UL-DL-ConfigurationCommon) and / or UE-specific UL / DL information (e.g., tdd-UL-DL-ConfigurationDedicated). The cell common UL / DL information can include information on the uplink / downlink attributes in the time dimension and the frequency domain dimension. For example, the cell common UL / DL information can be used to indicate which frequency domain resources of which time slots / symbols are uplink, downlink, or flexible transmission resources; or, the cell common UL / DL information can be used to indicate which frequency domain resources of which time slots / symbols are uplink, downlink, or resources that cannot be used for transmission (e.g., resources that cannot be used for transmission can be guard bands). The cell-specific UL / DL information can include information on the uplink / downlink attributes in the time dimension and the frequency domain dimension. For example, the cell-specific UL / DL information can be used to indicate which frequency domain resources of which time slots / symbols are uplink, downlink, or flexible transmission resources; or, the cell-specific UL / DL information can be used to indicate which frequency domain resources of which time slots / symbols are uplink, downlink, or resources that cannot be used for transmission (e.g., resources that cannot be used for transmission are guard bands). Figure 4 A schematic diagram of an uplink-downlink configuration according to an exemplary embodiment of the present disclosure is shown. In Figure 4 it, "D" indicates a downlink symbol and "U" indicates an uplink symbol.

[0132] Based on the configured UL / DL information, the UE can determine a symbol or a time slot, within which part of the frequency-domain resources are uplink transmission resources and part of the frequency-domain resources are downlink transmission resources. For example, such a symbol or time slot can be referred to as an SBFD symbol or an SBFD time slot. Based on the configured UL / DL information, the UE can also determine that all the frequency-domain resources within a symbol or a time slot are uplink transmission resources, or can also determine that all the frequency-domain resources within a symbol or a time slot are downlink transmission resources. The UL / DL information can be sent to the UE via semi-static signaling (e.g., high-layer signaling). The UE can determine one or more SBFD symbols or SBFD time slots based on the UL / DL information (e.g., cell-common UL / DL information and / or UE-dedicated UL / DL information and / or SBFD configuration information and / or other information). For example, the UE can perform uplink transmission and downlink reception simultaneously (e.g., in different frequency-domain resources (e.g., subbands) of the SBFD symbol or SBFD time slot) in the SBFD symbol or SBFD time slot. The SBFD configuration information can indicate one or more SBFD symbols that are configured / indicated. For example, the SBFD configuration information can indicate one or more SBFD symbols in downlink symbols or flexible symbols (e.g., downlink symbols or flexible symbols configured / indicated by high-layer signaling such as cell-common UL / DL information and / or UE-dedicated UL / DL information). Various methods can be used to configure the SBFD symbols or SBFD time slots. As an example, the SBFD configuration information can be independent of the cell-common UL / DL information (e.g., tdd-UL-DL-ConfigurationCommon) and / or UE-dedicated UL / DL information (e.g., tdd-UL-DL-ConfigurationDedicated), and an SBFD symbol or an SBFD time slot can be configured using a cell-common SBFD configuration information, or an SBFD symbol or an SBFD time slot can be configured using a UE-dedicated SBFD configuration information. As another example, the SBFD configuration information can be included in the cell-common UL / DL information (e.g., tdd-UL-DL-ConfigurationCommon) and / or UE-dedicated UL / DL information (e.g., tdd-UL-DL-ConfigurationDedicated).

[0133] Additionally, the UE can be configured with frequency bands for transmission and / or reception. For example, the frequency bands for transmission and / or reception can be referred to as uplink bandwidth part (BWP) and / or downlink BWP, or any other suitable name. When more than one uplink BWP and / or downlink BWP are configured for the UE, the active uplink BWP and / or active downlink BWP can be the uplink BWP and / or downlink BWP that the UE is currently transmitting and / or receiving on.

[0134] The UE can report channel state information (CSI). For example, the UE can report CSI to the base station. The UE can obtain CSI based on channel state information-reference signal (CSI-RS) (e.g., by measuring in CSI-RS resources). Among them, the UE can obtain the configuration of CSI-RS by receiving higher layer signaling or other signaling. The CSI-RS configuration includes the frequency domain configuration and time domain configuration of CSI-RS. The frequency domain configuration of CSI-RS includes the frequency band bandwidth and frequency band position of CSI-RS, and the time domain configuration of CSI-RS includes the period and start position of CSI-RS.

[0135] Figure 5 A schematic diagram showing the timing of CSI reporting according to an exemplary embodiment of the present disclosure is shown. Refer to Figure 5 , the UE can report CSI in slot n. The UE can measure the CSI-RS in slot n - n CSI_ref to obtain CSI, where n CSI_ref is a minimum value greater than or equal to k and ensuring that slot n - n CSI_ref is a valid downlink slot. Optionally, k is a parameter related to the delay requirement (e.g., CSI calculation delay requirement).

[0136] For example, the definition of a valid downlink slot can be: if a slot includes at least one downlink symbol or flexible symbol configured by higher layer signaling, and / or the slot does not fall within (e.g., is not included in) a measurement gap, the slot is a valid downlink slot.

[0137] Figure 6 A flowchart showing the CSI reporting of the UE according to an exemplary embodiment of the present disclosure is shown.

[0138] Refer to Figure 6, at operation 610, the UE receives CSI report configuration and SBFD configuration. For example, the UE may receive CSI report configuration and SBFD configuration via higher layer signaling. For example, the SBFD configuration may indicate one or more SBFD symbols. As an example, the SBFD configuration may indicate one or more SBFD symbols in the downlink symbols and / or flexible symbols configured by higher layer signaling.

[0139] In some embodiments, the CSI report configuration may include configuration of resources (e.g., PUCCH) for transmitting CSI and / or configuration of resources (e.g., CSI-RS resources) for measuring CSI.

[0140] Continuing to refer to Figure 6 , at operation 620, the UE determines valid downlink time slots based on the CSI report configuration and subband full-duplex configuration.

[0141] Next, at step 630, the UE determines CSI based on the determined valid downlink time slots, and the UE reports the CSI. For example, the UE may report the CSI to the base station.

[0142] In some embodiments, the UE may measure CSI in the determined valid downlink time slots at step 630 to obtain CSI.

[0143] In some embodiments, the valid downlink time slots may be determined according to one or more aspects of Method 1 and / or Method 2 below.

[0144] Method 1

[0145] The UE receives CSI report configuration. The CSI report configuration may include configuration of uplink time slot n for reporting CSI (e.g., PUCCH configuration). The UE may obtain CSI by measuring CSI-RS. The UE measures CSI-RS based on time slot n - n CSI_ref measure CSI-RS (e.g., measure time slot n - n CSI_ref or time slot - offset value of CSI-RS; for example, the offset value may be equal to where K offset is an offset parameter configured by the higher layer, μ DL is the downlink subcarrier spacing configuration, is the subcarrier spacing configuration with K offset value of 0 (e.g., for frequency range 1)) to obtain CSI, where n CSI_ref is greater than or equal to k (e.g., k is a parameter related to the delay requirement) and ensures that time slot n - n CSI_refis the minimum value of a valid downlink slot, such that the UE can report CSI in slot n. For example, the UE can report CSI to the base station.

[0146] For example, the definition of a valid downlink slot can be: if a slot includes at least one downlink symbol or flexible symbol configured by higher layer signaling, and / or the slot does not fall within (e.g., is not included in) a measurement gap (e.g., a configured measurement gap), the slot is a valid downlink slot.

[0147] In some embodiments, the downlink symbol or flexible symbol can be configured as an SBFD symbol, and the SBFD symbol includes an uplink band and / or a guard band. For example, the uplink band and / or guard band in the SBFD symbol cannot be used for CSI measurement.

[0148] If the UE's downlink active BWP is in the SBFD symbol and the downlink active BWP is completely included in the uplink band and / or guard band in the SBFD symbol, then at this time, this SBFD symbol cannot be used for CSI measurement. Considering the definition of a valid downlink slot as: if a slot includes at least one downlink symbol or flexible symbol configured by higher layer signaling and / or includes at least one downlink symbol or flexible symbol configured as SBFD by higher layer signaling, and the slot does not fall within (e.g., is not included in) a measurement gap, the slot is a valid downlink slot. In this case, when the downlink active BWP is completely included in the uplink band and / or guard band in the SBFD symbol, the valid downlink slot may not be available for CSI measurement, resulting in a wasted opportunity for the corresponding CSI report. Figure 7 shows a schematic diagram of a valid downlink slot according to an exemplary embodiment of the present disclosure. Refer to Figure 7 , in the downlink slot or flexible slot, slot n - n CSI_ref includes symbols configured / indicated as SBFD (SBFD symbols), and the downlink active BWP is completely included in the uplink band and / or guard band in the SBFD symbol. If based on slot n - n CSI_ref a valid downlink slot is determined (e.g., slot n - n CSI_ref is determined to be a valid downlink slot), then CSI measurement cannot be performed in slot n - n CSI_ref resulting in a wasted opportunity to report CSI in slot n.

[0149] In some embodiments, a time slot is a valid downlink time slot if it meets one or more or all of the following conditions: (i) the time slot includes at least one downlink symbol or flexible symbol configured by higher layer signaling; (ii) the time slot includes at least one SBFD symbol (e.g., including a downlink symbol or flexible symbol configured as SBFD by higher layer signaling); (iii) the downlink active BWP is not completely included within the uplink frequency band and / or guard band of the SBFD symbol; (vi) the time slot does not fall within (e.g., is not included in) a measurement gap.

[0150] For example, the definition of a valid downlink time slot can be: if a time slot includes at least one downlink symbol or flexible symbol configured by higher layer signaling, or if a time slot includes at least one downlink symbol or flexible symbol configured as SBFD by higher layer signaling, and the time slot does not fall within (e.g., is not included in) a measurement gap, and the downlink active BWP is not completely included within the uplink frequency band and / or guard band of the SBFD symbol, then the time slot is a valid downlink time slot. Figure 8 A schematic diagram of a valid downlink time slot according to an exemplary embodiment of the present disclosure is shown. Refer to Figure 8 , time slot n-n in the downlink time slot or flexible time slot CSI_ref includes a downlink symbol (SBFD symbol) configured / indicated as SBFD, and the downlink active BWP is not completely included within the uplink frequency band and / or guard band of the SBFD symbol. The UE can perform CSI measurement based on time slot n-n CSI_ref (e.g., in time slot n-n determined to be a valid downlink time slot CSI_ref ) and report CSI in time slot n.

[0151] Again, for example, a valid downlink time slot can be determined based on the following: if a time slot includes at least one downlink symbol or flexible symbol configured as SBFD by higher layer signaling, and the time slot does not fall within (e.g., is not included in) a measurement gap, and the downlink active BWP is completely included within the uplink frequency band and / or guard band of the SBFD symbol, then the time slot is not a valid downlink time slot. Return to reference Figure 7 , time slot n-n in the downlink time slot or flexible time slot CSI_refincludes downlink symbols configured / indicated as SBFD (i.e., SBFD symbols). If the downlink active BWP is completely included within the uplink frequency band and / or guard band of the SBFD symbols, then time slot n - n CSI_ref is not a valid downlink time slot or will not be determined as a valid downlink time slot.

[0152] Figure 9 shows a schematic diagram of a valid downlink time slot according to an exemplary embodiment of the present disclosure. Referring to Figure 9 , the UE reports CSI in time slot n. The UE measures CSI-RS based on time slot n - n CSI_ref (e.g., measures the CSI-RS of time slot n - n CSI_ref ) to obtain CSI, where n CSI_ref is a value greater than or equal to k (e.g., k is a parameter related to the delay requirement) and ensures that time slot n - n CSI_ref is a valid downlink time slot. As Figure 9 shown, time slot n - k1 in the downlink time slot or flexible time slot includes downlink symbols configured / indicated as SBFD (i.e., SBFD symbols). If the downlink active BWP is completely included within the uplink frequency band and / or guard band of the SBFD symbols, this time slot is not a valid downlink time slot. Time slot n - k2 in the downlink time slot or flexible time slot includes downlink symbols configured / indicated as non-SBFD, then this time slot is a valid downlink time slot. The UE measures based on time slot n - k2 (i.e., time slot n - n CSI_ref ) (e.g., in time slot n - k2 (i.e., time slot n - n CSI_ref )) to obtain CSI.

[0153] By adopting this method and considering SBFD to determine the valid downlink time slot, the effectiveness of CSI reporting can be improved.

[0154] It should be noted that in the exemplary embodiments of the present disclosure described in conjunction with Figures 6 - 9 and some other embodiments of the present disclosure, when describing the time domain resources of the reference signal (e.g., CSI-RS) used for measuring CSI, for the sake of brevity, the downlink transmission offset may not be considered. It can be understood that the exemplary embodiments of the present disclosure are equally applicable to scenarios where the downlink transmission offset is considered. For example, in the exemplary embodiments of the present disclosure, "measuring the CSI-RS of time slot n - n CSI_ref " or "measuring CSI-RS in time slot n - n CSI_ref " can be replaced with "measuring the CSI-RS of time slot - offset value" or "measuring CSI-RS in time slot - - offset value". For example, the offset value can be equal to where K offset is the offset parameter configured by a higher layer, and μ DL is the downlink subcarrier spacing configuration, and is the subcarrier spacing configuration of K with a value of 0 offset (e.g., for frequency range 1).

[0155] Method 2

[0156] The UE can receive CSI report configuration. The CSI report configuration can include the configuration of the uplink time slot n for reporting CSI (e.g., PUCCH configuration, such as the resources of the PUCCH for reporting CSI). The UE can obtain CSI by measuring CSI-RS. For example, the UE measures CSI-RS based on time slot n - n CSI_ref (e.g., measuring CSI-RS in time slot n - n CSI_ref or time slot - CSI-RS with an offset value; for example, the offset value can be equal to where K offset is the offset parameter configured by a higher layer, and μ DL is the downlink subcarrier spacing configuration, and is the subcarrier spacing configuration of K with a value of 0 offset (e.g., for frequency range 1)) to obtain CSI, where n CSI_ref is a value greater than or equal to k (e.g., k is a parameter related to the delay requirement) and ensures that time slot n - n CSI_ref is a valid downlink slot, so that the UE can report CSI in time slot n. For example, the UE can report CSI to the base station.

[0157] For example, the definition of a valid downlink slot can be: If a time slot includes at least one downlink symbol or flexible symbol configured by higher layer signaling, and / or the time slot does not fall within (e.g., is not included in) the measurement interval, then the time slot is a valid downlink slot.

[0158] The downlink symbol or flexible symbol can be configured as an SBFD symbol, and the SBFD symbol includes an uplink frequency band and / or a protection frequency band. For example, the uplink frequency band and / or the protection frequency band in the SBFD symbol cannot be used for CSI measurement.

[0159] If the UE's downlink active BWP is in the SBFD symbol and the proportion of the uplink frequency band and / or the guard band in the SBFD symbol included in the downlink active BWP (e.g., the ratio of the uplink frequency band and / or the guard band in the SBFD symbol included in the downlink active BWP to the uplink frequency band and / or the guard band in the SBFD symbol) is large (e.g., greater than or equal to a threshold alpha), then this SBFD symbol may cause inaccurate CSI measurement performance. Considering the definition of a valid downlink time slot: If a time slot includes at least one downlink symbol or flexible symbol configured by higher layer signaling and / or includes at least one downlink symbol or flexible symbol configured as SBFD by higher layer signaling, and this time slot does not fall within the measurement interval, then this time slot is a valid downlink time slot. In this case, when the proportion of the uplink frequency band and / or the guard band in the SBFD symbol included in the downlink active BWP is large (e.g., greater than a threshold alpha), the CSI measurement performance in the valid downlink time slot may be inaccurate.

[0160] In some embodiments, if a time slot meets one or more or all of the following conditions, then this time slot is a valid downlink time slot: (i) The time slot includes at least one downlink symbol or flexible symbol configured by higher layer signaling; (ii) The time slot includes at least one SBFD symbol (e.g., includes a downlink symbol or flexible symbol configured as SBFD by higher layer signaling); (iii) The proportion of the uplink frequency band and / or the guard band in the SBFD symbol included in the downlink active BWP (e.g., the ratio of the uplink frequency band and / or the guard band in the SBFD symbol included in the downlink active BWP to the uplink frequency band and / or the guard band in the SBFD symbol) is less than or equal to a threshold alpha; (vi) This time slot does not fall within (e.g., is not included in) the measurement interval.

[0161] For example, the definition of a valid downlink time slot can be: If a time slot includes at least one downlink symbol or flexible symbol configured by higher layer signaling, or if a time slot includes at least one downlink symbol or flexible symbol configured as SBFD by higher layer signaling, and this time slot does not fall within (e.g., is not included in) the measurement interval, and the proportion of the uplink frequency band and / or the guard band in the SBFD symbol included in the downlink active BWP is less than or equal to a threshold alpha, then this time slot is a valid downlink time slot.

[0162] Additionally or alternatively, for example, if a time slot includes at least one downlink symbol or flexible symbol configured as SBFD by higher layer signaling, and the time slot does not fall within a measurement interval, and if the ratio of the uplink frequency band and / or the guard band in the SBFD symbols included in the downlink active BWP is greater than a threshold alpha, the time slot is not a valid downlink time slot. For example, the threshold alpha can be specified by a protocol or configured by a base station. Return reference Figure 7 , time slot n-n in a downlink time slot or a flexible time slot CSI_ref includes downlink symbols (e.g., SBFD symbols) configured / indicated as SBFD, if the ratio of the uplink frequency band and / or the guard band in the SBFD symbols included in the downlink active BWP is greater than the threshold alpha, then time slot n-n CSI_ref is not a valid downlink time slot or will not be determined as a valid downlink time slot.

[0163] Return reference Figure 9 , the UE reports CSI in time slot n. The UE measures CSI-RS based on time slot n-n CSI_ref to obtain CSI (e.g., measuring the CSI-RS of time slot n-n CSI_ref ), where n CSI_ref is a minimum value greater than or equal to k (e.g., k is a parameter related to the delay requirement) and ensuring that time slot n-n CSI_ref is a valid downlink slot. As Figure 9 shown, time slot n-k1 in a downlink time slot or a flexible time slot includes downlink symbols (i.e., SBFD symbols) configured / indicated as SBFD (e.g., by higher layer signaling), the ratio of the uplink frequency band and / or the guard band in the SBFD symbols included in the downlink active BWP is greater than a threshold alpha, and this time slot is not a valid downlink time slot. Time slot n-k2 in a downlink time slot or a flexible time slot includes downlink symbols configured / indicated as non-SBFD (e.g., by higher layer signaling), and this time slot is a valid downlink time slot. The UE performs measurements (e.g., performs measurements in time slot n-k2 (i.e., time slot n-n CSI_ref )) based on time slot n-k2 (i.e., time slot n-n CSI_ref ) to obtain CSI, and reports CSI in time slot n.

[0164] By adopting this method, considering SBFD to determine valid downlink time slots can improve the effectiveness of CSI reporting.

[0165] Figure 10 shows a flowchart of method 1000 executed by a terminal according to some embodiments of the present disclosure.

[0166] Reference Figure 10 , in operation S1010, the terminal receives first configuration information and second configuration information. The first configuration information is used to indicate resources for CSI reporting, and the second configuration information is used to indicate SBFD symbols in downlink symbols or flexible symbols. For example, the terminal may receive the first configuration information and the second configuration information from the base station.

[0167] Next, in operation S1020, the terminal determines valid downlink time slots for CSI measurement based on the first configuration information and the second configuration information.

[0168] Then, in operation S1030, the terminal determines CSI based on the determined valid downlink time slots and transmits the determined CSI. For example, the terminal may transmit the determined CSI to the base station.

[0169] In some embodiments, operations S1010 to S1030 may be performed based on methods described according to various embodiments of the present disclosure (e.g., in combination with Figures 4 - 9 the exemplary embodiments described, and the various manners / methods described above, such as in manners / methods 1-2).

[0170] In some embodiments, method 1000 may omit one or more of operations S1010 to S1020, or may include additional operations, e.g., operations that may be performed by the terminal (e.g., UE) according to various embodiments of the present disclosure (e.g., in combination with Figures 4 - 9 the exemplary embodiments described, and the various manners / methods described above, such as manners / methods 1-2).

[0171] Figure 11 A flowchart of method 1100 performed by a base station according to some embodiments of the present disclosure is shown.

[0172] Reference Figure 11 , in operation S1110, the base station sends first configuration information and second configuration information to the terminal. The first configuration information is used to indicate resources for CSI reporting, and the second configuration information is used to indicate SBFD symbols in downlink symbols or flexible symbols.

[0173] Next, in operation S1120, the base station receives CSI from the terminal. Among them, the CSI is determined based on valid downlink time slots for CSI measurement, and the valid downlink time slots for CSI measurement are determined based on the first configuration information and the second configuration information.

[0174] In some embodiments, it may be based on various embodiments of the present disclosure (e.g., in combination with Figures 4 - 9The described exemplary embodiments, as well as the various manners / methods described above, such as the method described in Manner / Method 1-2, are used to perform one or more of Operations S1110 to S1120.

[0175] In some embodiments, Method 1100 may omit one or more of Operations S1110 to S1120, or may include additional operations. For example, according to various embodiments of the present disclosure (e.g., in combination with Figures 4 - 9 the described exemplary embodiments, as well as the various manners / methods described above, such as Manner / Method 1-2), operations that can be performed by a base station are described.

[0176] Figure 12 is a block diagram of the configuration of a first node (e.g., a terminal) as a scheduled node according to some embodiments of the present disclosure.

[0177] Referring to Figure 12 , the first node includes a transceiver 1210, a controller 1220, and a memory 1230. The controller 1220 may refer to a circuit, an application-specific integrated circuit (ASIC), or at least one processor. The transceiver 1210, the controller 1220, and the memory 1230 are configured to perform the operations described above that can be performed by a terminal or a UE. Although the transceiver 1210, the controller 1220, and the memory 1230 are shown as separate entities, they may be implemented as a single entity, such as a single chip. Alternatively, the transceiver 1210, the controller 1220, and the memory 1230 may be electrically connected or coupled to each other.

[0178] The transceiver 1210 may send signals to other network entities (e.g., a base station) and receive signals from other network entities.

[0179] The controller 1220 may control the first node to perform a function according to one of the various exemplary embodiments described above.

[0180] In some exemplary embodiments, the operations of the first node may be implemented using the memory 1230 that stores the corresponding program code. Specifically, the first node may be equipped with the memory 1230 to store the program code for implementing the desired operations. To perform the desired operations, the controller 1220 may read and execute the program code stored in the memory 1230 by using at least one processor or a central processing unit (CPU).

[0181] Figure 13 is a block diagram of the configuration of a second node (e.g., a base station) as a scheduling node according to some embodiments of the present disclosure.

[0182] Referring to Figure 13, the second node includes a transceiver 1310, a controller 1320, and a memory 1330. The controller 1320 may refer to a circuit, an application specific integrated circuit (ASIC), or at least one processor. The transceiver 1310, the controller 1320, and the memory 1330 are configured to perform the operations that can be performed by a base station as described above. Although the transceiver 1310, the controller 1320, and the memory 1330 are shown as separate entities, they may be implemented as a single entity, such as a single chip. Alternatively, the transceiver 1310, the controller 1320, and the memory 1330 may be electrically connected or coupled to each other.

[0183] The transceiver 1310 may send signals to other network entities (e.g., terminals) and receive signals from other network entities.

[0184] The controller 1320 may control the second node to perform functions according to one of the various exemplary embodiments described above.

[0185] In some exemplary embodiments, the operations of the second node may be implemented using the memory 1330 that stores the corresponding program code. Specifically, the second node may be equipped with the memory 1330 to store the program code for implementing the desired operations. To perform the desired operations, the controller 1320 may read and execute the program code stored in the memory 1330 by using at least one processor or a central processing unit (CPU).

[0186] Those skilled in the art will understand that the above illustrative embodiments are described herein and are not intended to be limiting. It should be understood that any two or more of the embodiments disclosed herein may be combined in any combination. In addition, 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 the aspects of the invention of the present disclosure as generally described herein and illustrated in the figures can be arranged, substituted, combined, separated, and designed in various different configurations, all of which are contemplated herein.

[0187] Those skilled in the art will understand that the various illustrative logical blocks, modules, circuits, and steps described in this application may be implemented as hardware, software, or a combination of both. To clearly illustrate this interchangeability of hardware and software, the various illustrative components, blocks, modules, circuits, and steps are described above in terms of their functional sets. Whether such a functional set is implemented as hardware or software depends on the particular application and the design constraints imposed on the overall system. Those skilled in the art may implement the described functional sets in different ways for each particular application, but such design decisions should not be construed as causing a departure from the scope of this application.

[0188] Each of the illustrative logical blocks, modules, and circuits described in this application can be implemented or executed 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 devices, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. 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.

[0189] The steps of the methods or algorithms described in this application can be embodied directly in hardware, in software modules executed by a processor, or in a combination of both. The software modules may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such that the processor can read from and write to the storage medium. In the alternative, the storage medium may be integrated into the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a communication device (e.g., a terminal or a base station). In the alternative, the processor and the storage medium may reside as discrete components in a communication device (e.g., a terminal or a base station).

[0190] In one or more exemplary designs, the functions may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted via a computer-readable medium as one or more instructions or code. The computer-readable medium includes both computer storage media and communication media, the latter including any medium that facilitates the transfer of a computer program from one place to another. The storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0191] The above description is only a demonstration implementation manner of the present invention, and is not used to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A method performed by a terminal in a wireless communication system, comprising: Receiving first configuration information and second configuration information, where the first configuration information is used to indicate resources for channel state information (CSI) reporting, and the second configuration information is used to indicate sub-band full-duplex (SBFD) symbols in downlink symbols or flexible symbols; Determining an effective downlink time slot for CSI measurement based on the first configuration information and the second configuration information; and Determining CSI based on the determined effective downlink time slot and transmitting the determined CSI.

2. The method according to claim 1, wherein, Determining an effective downlink time slot for CSI measurement based on first configuration information and second configuration information includes: determining the effective downlink time slot based on time slot n-n CSI_ref , and determining the effective downlink time slot Wherein, the n is the index of the uplink time slot for transmitting the CSI determined based on the first configuration information, where n CSI_ref is determined based on the first configuration information and the second configuration information where n CSI_ref is greater than or equal to the minimum value of the parameter related to the delay requirement and makes the time slot n - n CSI_ref be a valid downlink time slot.

3. The method according to claim 2, wherein Determining CSI based on the determined valid downlink time slots includes: measuring the reference signals in time slot n - n CSI_ref to obtain CSI.

4. According to the method as claimed in any one of claims 1 to 3, wherein, Comprising at least one downlink symbol or flexible symbol, and a time slot not included in the measurement interval for the UE is determined as the effective downlink time slot.

5. The method according to any one of claims 1-4, wherein: Comprising at least one SBFD symbol, and a time slot in which the downlink active bandwidth part (BWP) is not completely included in the uplink frequency band and / or the guard band within the SBFD symbol is determined as the effective downlink time slot; or Comprising at least one SBFD symbol, and a time slot in which the downlink active bandwidth part (BWP) is not completely included in the uplink frequency band and / or the guard band within the SBFD symbol, and the effective downlink time slot is not included in the measurement interval for the UE is determined as the effective downlink time slot.

6. The method according to any one of claims 1-4, wherein: Comprising at least one SBFD symbol, and a time slot in which the ratio of the uplink frequency band and / or the guard band in the SBFD symbol included in the downlink active bandwidth part (BWP) is less than or equal to a first threshold is determined as the effective downlink time slot; or Comprising at least one SBFD symbol, and a time slot in which the ratio of the uplink frequency band and / or the guard band in the SBFD symbol included in the downlink active bandwidth part (BWP) is less than or equal to a first threshold, and is not included in the measurement interval for the UE is determined as the effective downlink time slot.

7. The method according to claim 1 further comprises: Receiving third configuration information, where the third configuration information is used to configure the one or more downlink symbols or the one or more flexible symbols, Wherein, the third configuration information includes time-division duplex (TDD) uplink (UL)-downlink (DL) common configuration information and / or TDD UL-DL dedicated configuration information.

8. The method according to claim 1, wherein The second configuration information includes cell-common SBFD configuration information and / or UE-dedicated SBFD configuration information.

9. A method performed by a base station in a wireless communication system, comprising: Sending first configuration information and second configuration information to a terminal, where the first configuration information is used to indicate resources for channel state information (CSI) reporting, and the second configuration information is used to indicate sub-band full-duplex (SBFD) symbols in downlink symbols or flexible symbols; and Receiving CSI from the terminal, Wherein, the CSI is determined based on an effective downlink time slot for CSI measurement, Wherein, the effective downlink time slot for CSI measurement is determined based on the first configuration information and the second configuration information.

10. The method according to claim 9, wherein: The effective downlink time slot is based on time slot n-n CSI_ref determined the n is an index of an uplink time slot for transmitting the CSI determined based on first configuration information, The said n CSI_ref is determined based on the said first configuration information and the said second configuration information. Said n CSI_ref is greater than or equal to the minimum value of the delay requirement related parameter and makes the time slot n - n CSI_ref be a valid downlink time slot.

11. The method according to claim 10, wherein, The CSI is obtained by measuring the reference signal in time slot n-n CSI_ref therein.

12. According to the method as claimed in any one of claims 9-11, wherein, comprises at least one downlink symbol or flexible symbol, and a time slot not included in a measurement interval for the UE is determined as the valid downlink time slot.

13. The method according to any one of claims 9 - 12, wherein: comprises at least one SBFD symbol, and a time slot in which a downlink active bandwidth part (BWP) is not completely included in an uplink frequency band and / or a guard band in the SBFD symbol is determined as the valid downlink time slot; or comprises at least one SBFD symbol, and a time slot in which a downlink active bandwidth part (BWP) is not completely included in an uplink frequency band and / or a guard band in the SBFD symbol, and the valid downlink time slot is not included in a measurement interval for the UE, is determined as the valid downlink time slot.

14. The method according to any one of claims 9 - 13, wherein: comprises at least one SBFD symbol, and a time slot in which a ratio of an uplink frequency band and / or a guard band in the SBFD symbol included in a downlink active bandwidth part (BWP) is less than or equal to a first threshold value is determined as the valid downlink time slot; or comprises at least one SBFD symbol, and a time slot in which a ratio of an uplink frequency band and / or a guard band in the SBFD symbol included in a downlink active bandwidth part (BWP) is less than or equal to a first threshold value, and the time slot is not included in a measurement interval for the UE, is determined as the valid downlink time slot.

15. The method according to claim 9 further comprises: transmit third configuration information, the third configuration information being used to configure the one or more downlink symbols or the one or more flexible symbols, wherein the third configuration information comprises time division duplex (TDD) uplink - downlink (UL - DL) common configuration information and / or TDD UL - DL dedicated configuration information.

16. The method according to claim 9, wherein, The second configuration information comprises cell - common SBFD configuration information and / or terminal - dedicated SBFD configuration information.

17. A terminal in a wireless communication system, comprising: a transceiver; and one or more processors, coupled to the transceiver and configured to execute the method according to any one of claims 1 - 8.

18. A base station in a wireless communication system, comprising: a transceiver; and one or more processors, coupled to the transceiver and configured to execute the method according to any one of claims 9 - 16.

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