Resource determination method, communication node and storage medium

Abstract

Disclosed in the present application are a resource determination method, a communication node and a storage medium. The resource determination method comprises: receiving resource configuration information, wherein the resource configuration information comprises time-domain configuration information and frequency-domain configuration information, the time-domain configuration information is used for indicating a time-domain resource location of a subband full-duplex (SBFD) subband based on an SBFD period or a time division duplexing (TDD) period, and the frequency-domain configuration information is used for indicating a frequency-domain resource location of an SBFD subband corresponding to at least one sub carrier space (SCS) based on a carrier; and on the basis of the resource configuration information, determining time-frequency resources of the SBFD subband.

Description

Resource determination method, communication node and storage medium Technical Field

[0001] The present application relates to the field of communication technology, for example, to a resource determination method, a communication node and a storage medium. Background Art

[0002] To improve uplink (UL) coverage, reduce UL transmission latency, and increase UL transmission capacity in time division duplexing (TDD) systems, subband full duplex (SBFD) technology has emerged. SBFD technology achieves full duplexing on the base station side by dividing a single TDD carrier into non-overlapping uplink / downlink subbands and transmitting and receiving data separately on these subbands. Currently, a carrier can be configured with multiple subcarrier spaces (SCSs), with different SCSs corresponding to different carrier bandwidths. If a carrier is configured or determined to have different SCSs, there is no research in the related art on how to allocate frequency domain resources for the SBFD subbands. Furthermore, SBFD subbands are periodically allocated in the time domain, with this period being considered equal to one or more TDD frame structure periods. If there is a correlation between the period of the SBFD subband and the TDD frame structure period, there is no research in the related art on how to allocate time domain resources for the SBFD subbands. Summary of the Invention

[0003] An embodiment of the present application provides a resource determination method, applied to a first communication node, including:

[0004] Receive resource configuration information, where the resource configuration information includes time domain configuration information and frequency domain configuration information, where the time domain configuration information is used to indicate a time domain resource location of an SBFD subband based on a subband full-duplex (SBFD) period or a time division duplex (TDD) period, and the frequency domain configuration information is used to indicate a frequency domain resource location of an SBFD subband corresponding to at least one subcarrier spacing (SCS) of a carrier;

[0005] The time-frequency resources of the SBFD subband are determined according to the resource configuration information.

[0006] An embodiment of the present application provides a resource determination method, applied to a second communication node, including:

[0007] Send resource configuration information, where the resource configuration information includes time domain configuration information and frequency domain configuration information. The time domain configuration information is used to indicate the time domain resource position of the SBFD subband based on the subband full-duplex SBFD period or the time division duplex TDD period. The frequency domain configuration information is used to indicate the frequency domain resource position of the SBFD subband corresponding to at least one subcarrier spacing SCS of the carrier.

[0008] An embodiment of the present application provides a communication node, comprising: a processor; the processor is configured to implement the method of any of the above embodiments when executing a computer program.

[0009] An embodiment of the present application further provides a computer-readable storage medium storing a computer program, which implements the method of any of the above embodiments when the computer program is executed by a processor.

[0010] With respect to the above embodiments and other aspects of the present application and their implementation, further description is provided in the accompanying drawings, detailed description and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG1 is a schematic diagram of the structure of an SBFD sub-band provided by an embodiment;

[0012] FIG2 is a schematic diagram of the structure of another SBFD sub-band provided by an embodiment;

[0013] FIG3 is a schematic diagram of a networking of a wireless communication system provided by an embodiment;

[0014] FIG4 is a schematic structural diagram of a resource A provided by an embodiment;

[0015] FIG5 is a schematic flow chart of a resource determination method provided by an embodiment;

[0016] FIG6 is a flow chart of another resource determination method provided by an embodiment;

[0017] FIG7 is a schematic diagram of configuring an SBFD subband based on Example 1-1, provided by an embodiment;

[0018] FIG8 is a schematic diagram of configuring an SBFD subband based on Example 1-2, provided by an embodiment;

[0019] FIG9 is a schematic diagram of configuring an SBFD subband in the time domain based on a reference SCS and obtaining an SBFD subband corresponding to another SCS at a time domain position, provided by an embodiment;

[0020] FIG10 is a schematic diagram of another configuration of SBFD subbands based on Example 1-1 provided by an embodiment;

[0021] FIG11 is a schematic diagram of another configuration of SBFD subbands based on Example 1-2 provided by an embodiment;

[0022] FIG12 to FIG15 are four examples of alignment of frequency domain resources actually used by different SBFD sub-bands in the frequency domain provided by an embodiment;

[0023] FIG16 is a schematic diagram of frequency domain resource configuration of a different SBFD sub-band provided by an embodiment;

[0024] FIG17 is a schematic diagram of frequency domain resource configuration of another different SBFD sub-band provided by an embodiment;

[0025] FIG18 is a schematic diagram of frequency domain resource mapping of an SBFD subband provided by an embodiment;

[0026] FIG19 is a schematic diagram of frequency domain resource mapping of another SBFD subband provided by an embodiment;

[0027] FIG20 is a schematic diagram of frequency domain resource mapping of another SBFD subband provided by an embodiment;

[0028] FIG21 is a schematic structural diagram of a resource determination device provided by an embodiment;

[0029] FIG22 is a schematic structural diagram of another resource determination device provided by an embodiment;

[0030] FIG23 is a schematic structural diagram of a UE provided by an embodiment;

[0031] FIG24 is a schematic structural diagram of a base station provided by an embodiment. DETAILED DESCRIPTION

[0032] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0033] In order to improve the UL coverage of the TDD system, reduce the UL transmission delay and increase the UL transmission capacity, a SBFD technology for user equipment (UE) in the Radio Resource Control (RRC) connected state has emerged.

[0034] For SBFD technology, one UL subband and up to two DL subbands can be configured in some or all downlink (DL) time slots / symbols. For example, the UL subband and the DL subband are required to be configured based on the DL bandwidth part (BWP) and the UL BWP pair, and the DL BWP and the UL BWP pair are required to have the same center frequency. In the frequency domain, the frequency domain resources of the UL subband and the DL subband are generally considered to be configured within the frequency domain range of the DL BWP. The DL BWP is valid in the DL symbol or slot. However, in the frequency domain, the frequency domain resources of the UL subband and the DL subband can also be configured outside the DL BWP. For example, the frequency domain resources of the UL subband and the DL subband can partially or completely exceed the frequency domain range of the DL BWP.

[0035] The UL subband and the DL subband are also called SBFD subbands. That is, an SBFD subband is configured in the DL symbol / slot of the DL BWP. The SBFD subband usually includes at least one DL subband and one UL subband.

[0036] For example, in a 100 MHz TDD carrier, 20 consecutive resource blocks (RBs) are configured as UL subbands within the DL symbol / slot of a DL BWP. The remaining frequency domain resources of the DL BWP are DL subbands (gap allocation is optional), or a DL subband is also configured within the DL symbol / slot of the DL BWP. In this way, within the DL symbol / slot, the UL subband can be used for UL transmission, and the DL subband can be used for DL ​​transmission. Figure 1 is a schematic diagram of the structure of an SBFD subband provided by one embodiment. As shown in Figure 1, an SBFD subband includes one UL subband and two DL subbands. This frequency domain pattern is generally referred to as "DUD" (based on frequency domain structure). Figure 2 is a schematic diagram of the structure of another SBFD subband provided by one embodiment. As shown in Figure 2, an SBFD subband includes one UL subband and one DL subband, with the UL subband located below the DL subband. This frequency domain pattern is generally referred to as "DU" (based on frequency domain structure).

[0037] Currently, SBFD technology has the following characteristics: the base station has the ability to simultaneously receive on the UL subband and transmit on the DL subband in the same time domain. The UE does not have the ability to simultaneously receive on the UL subband and transmit on the DL subband in the same time domain. Here, the UL subband and DL subband are allocated in the same Orthogonal Frequency-Division Multiplexing (OFDM) symbol / slot and are frequency-divided.

[0038] The above-mentioned SBFD subband operation is performed within a DL BWP and a UL BWP pair, and the center frequencies of the DL BWP and the UL BWP pair are aligned.

[0039] Currently, a single carrier can be configured with multiple SCSs, which are used to determine the carrier bandwidth within that carrier. For example, assuming a carrier is configured with two SCSs, SCS1 and SCS2, the base station or UE can determine two carrier bandwidths from that carrier, corresponding to SCS1 and SCS2, respectively. In other words, if UE1 is configured / determined to have SCS1 as the carrier's SCS, UE1 can configure carrier bandwidth 1 based on SCS1. Furthermore, within this carrier bandwidth 1, a DL BWP or UL BWP can be configured for UE1, and SCSs can be configured for each DL BWP and UL BWP, respectively. In this way, UE1 can perform DL reception or UL transmission based on the DL BWP or UL BWP and the corresponding SCS.

[0040] It should be noted that SCS1 and SCS2 here are the SCSs corresponding to the carrier. The DL BWP or UL BWP of UE1 is also configured with a corresponding SCS. The SCS configured for the DL BWP or UL BWP of UE1 here may be different from the SCS1 of the carrier configured / determined for UE1.

[0041] Similarly, if UE2 is configured / determined to have SCS2 as the carrier's SCS, UE2 can configure carrier bandwidth 2 based on SCS2. Furthermore, a DL BWP or UL BWP is configured for UE2 within carrier bandwidth 2, and an SCS is configured for each DL BWP and UL BWP, respectively. In this way, UE2 can perform DL reception or UL transmission based on the DL BWP or UL BWP and the corresponding SCS.

[0042] It should be noted that SCS1 and SCS2 here are the SCSs corresponding to the carrier. UE2's DL BWP or UL BWP is also configured with a corresponding SCS. The SCS configured for UE2's DL BWP or UL BWP here may be different from the SCS2 of the carrier configured / determined for UE2.

[0043] If a carrier is configured or determined to have different SCSs, there is no relevant research in the related art on how to configure the frequency domain resources of the SBFD subband.

[0044] In related art, SBFD subbands are periodically configured in the time domain, and this period is considered equal to one or more TDD frame structure periods. Furthermore, a TDD frame structure period may have a double period, that is, two TDD frame structure periods are combined into one period, and one SBFD period can be equal to this double period.

[0045] If there is a correlation between the period of the SBFD subband and the period of the TDD frame structure, then there is no relevant research in the related art on how to configure the time domain resources of the SBFD subband.

[0046] The resource determination method provided in this application can be applied to various wireless communication systems, such as long term evolution (LTE) systems, fourth generation mobile communication technology (4th-generation, 4G) systems, fifth generation mobile communication technology (5th-generation, 5G) systems, LTE and 5G hybrid architecture systems, 5G New Radio (NR) systems, and new communication systems emerging in future communication developments, such as sixth generation mobile communication technology (6th-generation, 6G) systems. Figure 3 is a networking diagram of a wireless communication system provided in one embodiment. As shown in Figure 3, the wireless communication system includes a terminal device 110, an access network device 120, and a core network device 130.

[0047] The terminal device 110 can be a device with wireless transceiver functions, which can be deployed on land (such as indoors or outdoors, handheld, wearable or vehicle-mounted, etc.); it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.). Some examples of terminal devices 110 include: wireless terminals, UEs, mobile phones, mobile stations, tablet computers, laptop computers, ultra-mobile personal computers (UMPCs), handheld computers, netbooks, personal digital assistants (PDAs), and other user devices that can be connected to the Internet, or virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc., or Internet of Things nodes in the Internet of Things, or vehicle-mounted communication devices in the Internet of Vehicles, or entertainment, gaming devices or systems, or global positioning system devices, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal devices. In addition, the terminal devices can be referred to as terminals.

[0048] The access network device 120 is an access device that the terminal device 110 uses to access the wireless communication system wirelessly. It can be a reader / writer, a base station, an evolved NodeB (eNB or eNodeB) in Long Term Evolution Advanced (LTEA), a transmission reception point (TRP), a base station in a 5G mobile communication system or a next-generation NodeB (gNB), a base station in a future mobile communication system, or an access node in a Wireless Fidelity (WiFi) system. A base station can include various macro base stations, micro base stations, home base stations, wireless remote stations, routers, WiFi devices, or various network-side devices such as primary cells and secondary cells, and location management function (LMF) devices. It can also be a module or unit that performs some of the functions of a base station, for example, a centralized unit (CU) or a distributed unit (DU). The embodiments of the present application do not limit the specific technology and specific device form adopted by the access network device. In addition, the access network device can be referred to as a base station.

[0049] The core network device 130 may include an access and mobility management network element and a session management network element. For example, the terminal device 110 may access the core network through the access network device 120 to achieve data transmission.

[0050] In an embodiment of the present application, a resource determination method, a communication node, and a storage medium that can be operated in the above-mentioned wireless communication system are provided, which can realize the configuration of time-frequency resources of the SBFD subband, thereby achieving large bandwidth and low latency communication through flexible scheduling of the SBFD subband and improving system performance.

[0051] The resource determination method, communication nodes and their technical effects are described below.

[0052] For the convenience of description, the technical terms in this application are explained as follows:

[0053] SBFD symbol: a symbol configured with an SBFD subband.

[0054] SBFD slot: The slot that contains the SBFD symbol.

[0055] Non-SBFD symbol: a symbol not configured with an SBFD subband, that is, a regular symbol.

[0056] non-SBFD slot: indicates a slot that does not contain an SBFD symbol.

[0057] The base station can transmit and receive signals in the same time domain on both the UL and DL subbands of the SBFD subband. For example, the base station transmits in symbols 1-9 of the DL subband while simultaneously receiving signals in symbols 1-9 of the UL subband. The DL and UL subbands are frequency-divided. The UE also transmits and receives signals using time division multiplexing.

[0058] In order to further improve system efficiency and spectrum efficiency, this application proposes co-frequency co-time full duplex (CCFD) operation. First, CCFD subband resources are proposed, that is, for one carrier, a CCFD subband is configured in the frequency domain (the configuration of the CCFD subband can reuse the configuration of the following SBFD subband). For example, in this CCFD subband, the base station performs transmission in some RBs of the CCFD subband and in symbols 1-9, and also performs reception in these RBs of the CCFD subband and in symbols 1-9. That is, the base station uses the same time-frequency resources to perform reception and transmission simultaneously. The UE still performs reception and transmission based on time division multiplexing.

[0059] In one carrier, the base station configures an RB set as a CCFD subband based on continuous RBs in the frequency domain and uses it for CCFD operations, and configures some slots or symbols as CCFD subbands based on symbols or slots in the time domain and uses them for CCFD operations. In this way, some time-frequency resources (denoted as resource A) for CCFD operations can be obtained. Resource A is also called a CCFD subband and can be used for DL ​​transmission and UL reception. At least from the base station side, resource A can be used for simultaneous full-duplex transmission on the same frequency. That is, the base station can use the same time and the same frequency in resource A to send DL signals and receive UL signals at the same time. The UE side can only support time-division DL transmission and UL transmission.

[0060] In this application, symbols / slots configured with resource A are referred to as CCFD symbols / slots, and symbols / slots not configured with resource A are referred to as non-CCFD symbols / slots (e.g., conventional DL symbols / slots, UL symbols / slots, or F symbols / slots). FIG4 is a schematic diagram of the structure of resource A provided in one embodiment.

[0061] The following methods are described based on SBFD subbands, but they can also be applied to CCFD subbands. For example, simply replace the SBFD symbols / slots in these methods with CCFD symbols / slots, and replace the non-SBFD symbols / slots with non-CCFD symbols / slots. Furthermore, if the following methods are described based on UL subbands or DL ​​subbands, the DL subbands and UL subbands can be replaced with CCFD subbands because CCFD subbands can support both DL reception and UL transmission.

[0062] In this application, SBFD subbands can be understood to include DL subbands, UL subbands, and frequency gaps. Furthermore, SBFD subbands can be directly replaced by UL subbands or DL ​​subbands. For example, the time and frequency domain resources allocated to an SBFD subband can be replaced by the time and frequency domain resources allocated to an UL subband or a DL subband.

[0063] Figure 5 is a schematic flow chart of a resource determination method provided by one embodiment. As shown in Figure 5, the method provided by this embodiment is applicable to a first communication node (also referred to as a first communication node device, or a first node, or a first device), such as a UE. The method includes the following steps.

[0064] S110. Receive resource configuration information, where the resource configuration information includes time domain configuration information and frequency domain configuration information. The time domain configuration information is used to indicate the time domain resource position of the SBFD subband based on the subband full-duplex SBFD period or the time division duplex TDD period. The frequency domain configuration information is used to indicate the frequency domain resource position of the SBFD subband corresponding to at least one subcarrier spacing SCS of the carrier.

[0065] In one embodiment, the SBFD subband includes at least one of a DL subband and a UL subband, and a frequency domain gap. That is, the SBFD subband may include a DL subband, a UL subband, and a frequency domain gap, or may include a DL subband and a frequency domain gap, or may include a UL subband and a frequency domain gap.

[0066] In one embodiment, the time domain configuration information includes first information and second information. The first information indicates the configuration mode of the SBFD subband within an SBFD period, and the second information indicates the slot and symbol of the SBFD subband within an SBFD period. The frequency domain configuration information indicates the common resource blocks (CRBs) of the SBFD subband corresponding to at least one SCS based on the carrier. The frequency domain resource locations corresponding to different SCSs are described by the CRBs associated with their corresponding SCSs.

[0067] In one embodiment, an SBFD period includes at least one TDD frame structure period, and the configuration of the SBFD subband in an SBFD period includes any one of the following:

[0068] SBFD subbands are configured in each TDD frame structure period;

[0069] The SBFD subband is configured in some TDD frame structure periods.

[0070] In one embodiment, the time domain resource position of the SBFD subband includes at least one of the following positions: a starting slot, a starting symbol, an ending slot, and an ending symbol;

[0071] If the starting slot is not specified, the first slot in an SBFD cycle or TDD frame structure cycle is the default starting slot.

[0072] When the starting symbol is missing, the first symbol in the indicated starting slot is the starting symbol by default;

[0073] In the case where the end slot is not specified, the last slot in the remaining slots, excluding the uplink timeslot or flexible timeslot, within an SBFD period or TDD frame structure period is considered the end slot. At least one flexible symbol in the flexible timeslot is not configured as an uplink symbol or is not configured for semi-static uplink transmission. The end slot can be replaced by the number of consecutive slots starting from the start slot.

[0074] When the end symbol is not specified, the last symbol among the remaining symbols other than the uplink symbol or the flexible symbol in an SBFD period or a TDD frame structure period is the end symbol by default; the flexible symbol is not configured as an uplink symbol or is not configured for semi-static uplink transmission.

[0075] In one embodiment, the number of bits in the start slot or the end slot is determined according to at least one of the following:

[0076] The total number of all downlink slots and all special slots in one SBFD period or one TDD frame structure period, where the special slots include at least one of the first slot and the second slot, the first slot includes at least one uplink symbol and at least one downlink symbol, and the second slot includes a flexible symbol, which is not configured as an uplink symbol or is not configured for semi-static uplink transmission;

[0077] The maximum number of slots that can be configured in an SBFD subband within an SBFD period or a TDD frame structure period.

[0078] In one embodiment, the number of bits of the start symbol is determined according to at least one of the following:

[0079] The total number of all downlink symbols and all flexible symbols in a starting slot. Flexible symbols are not configured as uplink symbols or are not used for semi-static uplink transmission.

[0080] The first k1 symbols of the starting slot;

[0081] The last k1 symbols of the starting slot.

[0082] In one embodiment, the number of bits of the end symbol is determined according to at least one of the following:

[0083] The total number of all downlink symbols and all flexible symbols in an end slot. Flexible symbols are not configured as uplink symbols or are not used for semi-static uplink transmission.

[0084] The first k2 symbols that end the slot;

[0085] The last k2 symbols that end the slot.

[0086] Wherein, k1 and k2 are both positive integers.

[0087] In one embodiment, the time domain resource location of the SBFD subband is determined by at least one of the following:

[0088] In an SBFD period or TDD frame structure period, all symbols are regarded as a set, and a start symbol is indicated from the set. The default end symbol is the last symbol of the remaining symbols in the SBFD period or TDD frame structure period except for the UL subband and flexible symbols. All symbols from the start symbol to the end symbol are configured as SBFD subbands. Flexible symbols are not configured as UL symbols by the time division duplex uplink and downlink dedicated configuration TDD-UL-DL-ConfigDedicated and slot format indication (SFI).

[0089] When an SBFD period contains at least two TDD frame structure periods, all symbols in the TDD frame structure period in which the SBFD subband is configured are taken as a set, and a start symbol is indicated from the set. The default end symbol is the last symbol of the remaining symbols excluding the UL subband and flexible symbols in the TDD frame structure period in which the SBFD subband is configured. All symbols from the start symbol to the end symbol are configured as SBFD subbands. Flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI.

[0090] In an SBFD period or TDD frame structure period, all slots are regarded as a set, and a starting slot is indicated from the set. The first symbol or predefined symbol in the starting slot is used as the start symbol of the SBFD subband, and the default end symbol is the last symbol of the remaining symbols in the SBFD period or TDD frame structure period except for the UL subband and flexible symbols. All symbols from the start symbol to the end symbol are configured as SBFD subbands; flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI;

[0091] When an SBFD period contains at least two TDD frame structure periods, all slots in the TDD frame structure period in which the SBFD subband is configured are taken as a set, and a starting slot is indicated from the set. The first symbol or predefined symbol in the starting slot is used as the starting symbol of the SBFD subband, and the default end symbol is the last symbol of the remaining symbols except the UL subband and flexible symbols in the TDD frame structure period in which the SBFD subband is configured. All symbols from the start symbol to the end symbol are configured as the SBFD subband; the flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI.

[0092] In one embodiment, if the first SCS is a reference SCS and the first SCS is smaller than the second SCS, the slot and / or symbol of the SBFD subband corresponding to the second SCS is determined based on the slot and / or symbol of the SBFD subband corresponding to the first SCS; the slot and / or symbol of the SBFD subband corresponding to the second SCS overlap and correspond to the slot and / or symbol of the SBFD subband corresponding to the first SCS in the time domain; the slot and / or symbol of the SBFD subband corresponding to the first SCS is configured based on the reference SCS.

[0093] S120: Determine the time-frequency resources of the SBFD subband according to the resource configuration information.

[0094] In one embodiment, the method for determining the time-frequency resources of the SBFD subband according to the resource configuration information may include: determining the time-domain resources of the SBFD subband according to the time-domain configuration information; and determining the frequency-domain resources of the SBFD subband according to the frequency-domain configuration information.

[0095] Specifically, based on the frequency domain configuration information, the frequency domain resources of the SBFD subband can be determined using any of the following methods: Method 1: Determine the CRB of the SBFD subbands of a carrier within the carrier bandwidths corresponding to different SCSs based on the frequency domain configuration information. Method 2: Determine the CRB of the SBFD subbands of a carrier within the carrier bandwidth corresponding to one SCS based on the frequency domain configuration information; and determine the CRB of the SBFD subbands within the carrier bandwidths corresponding to the remaining SCSs based on the CRB of the SBFD subband within the carrier bandwidth corresponding to one SCS.

[0096] In one embodiment, SBFD subbands within different carrier bandwidths satisfy at least one of the following rules:

[0097] The frequency domain resources of the SBFD subband remain continuous;

[0098] The first subcarrier of the starting CRB of one SBFD subband is aligned with the center of the first subcarrier of the starting CRB of another SBFD subband;

[0099] The last subcarrier of the end CRB of one SBFD subband is aligned with the center of the last subcarrier of the end CRB of another SBFD subband;

[0100] The center of the last subcarrier of the ending CRB of one SBFD subband is aligned with the end of the last subcarrier of the last CRB of another SBFD subband;

[0101] The center of the first subcarrier of the starting CRB of one SBFD subband is aligned with the start of the first subcarrier of the starting CRB of another SBFD subband;

[0102] The number of CRBs in one SBFD subband is twice the number of CRBs in another SBFD subband. u2-u1 times, u1 and u2 are both constants, satisfying the SCS of an SBFD subband of 15KHz*2 u1 , the SCS of the other SBFD sub-band is 15KHz*2 u2 , and u2 is greater than u1;

[0103] An SBFD subband includes an integer number of CRBs corresponding to the SCS.

[0104] Figure 6 is a schematic flow chart of another resource determination method provided by one embodiment. As shown in Figure 6, the method provided by this embodiment is applicable to a second communication node (also referred to as a second communication node device, or a second node, or a second device), such as a base station. The method includes the following steps.

[0105] S210. Send resource configuration information, where the resource configuration information includes time domain configuration information and frequency domain configuration information. The time domain configuration information is used to indicate the time domain resource position of the SBFD subband based on the subband full-duplex SBFD period or the time division duplex TDD period. The frequency domain configuration information is used to indicate the frequency domain resource position of the SBFD subband corresponding to at least one subcarrier spacing SCS of the carrier.

[0106] In one embodiment, before executing step S210, the second communication node may first determine resource configuration information. In addition, the second communication node may also determine the time-frequency resources of the SBFD subband according to the resource configuration information.

[0107] In one embodiment, the SBFD subband includes at least one of a DL subband and a UL subband, and a frequency domain gap. That is, the SBFD subband may include a DL subband, a UL subband, and a frequency domain gap, or may include a DL subband and a frequency domain gap, or may include a UL subband and a frequency domain gap.

[0108] In one embodiment, the time domain configuration information includes first information and second information. The first information indicates the configuration mode of the SBFD subband within an SBFD period, and the second information indicates the slot and symbol of the SBFD subband within an SBFD period. The frequency domain configuration information indicates the CRB of the SBFD subband corresponding to at least one SCS based on the carrier. The frequency domain resource locations corresponding to different SCSs are described by the CRBs associated with their corresponding SCSs.

[0109] In one embodiment, an SBFD period includes at least one TDD frame structure period, and the configuration of the SBFD subband in an SBFD period includes any one of the following:

[0110] SBFD subbands are configured in each TDD frame structure period;

[0111] The SBFD subband is configured in some TDD frame structure periods.

[0112] In one embodiment, the time domain resource position of the SBFD subband includes at least one of the following positions: a starting slot, a starting symbol, an ending slot, and an ending symbol;

[0113] If the starting slot is not specified, the first slot in an SBFD cycle or TDD frame structure cycle is the default starting slot.

[0114] When the starting symbol is missing, the first symbol in the indicated starting slot is the starting symbol by default;

[0115] In the case where the end slot is not specified, the last slot in the remaining slots, excluding the uplink timeslot or flexible timeslot, within an SBFD period or TDD frame structure period is considered the end slot. At least one flexible symbol in the flexible timeslot is not configured as an uplink symbol or is not configured for semi-static uplink transmission. The end slot can be replaced by the number of consecutive slots starting from the start slot.

[0116] When the end symbol is not specified, the last symbol among the remaining symbols other than the uplink symbol or the flexible symbol in an SBFD period or a TDD frame structure period is the end symbol by default; the flexible symbol is not configured as an uplink symbol or is not configured for semi-static uplink transmission.

[0117] In one embodiment, the number of bits in the start slot or the end slot is determined according to at least one of the following:

[0118] The total number of all downlink slots and all special slots in one SBFD period or one TDD frame structure period, where the special slots include at least one of the first slot and the second slot, the first slot includes at least one uplink symbol and at least one downlink symbol, and the second slot includes a flexible symbol, which is not configured as an uplink symbol or is not configured for semi-static uplink transmission;

[0119] The maximum number of slots that can be configured in an SBFD subband within an SBFD period or a TDD frame structure period.

[0120] In one embodiment, the number of bits of the start symbol is determined according to at least one of the following:

[0121] The total number of all downlink symbols and all flexible symbols in a starting slot. Flexible symbols are not configured as uplink symbols or are not used for semi-static uplink transmission.

[0122] The first k1 symbols of the starting slot;

[0123] The last k1 symbols of the starting slot.

[0124] In one embodiment, the number of bits of the end symbol is determined according to at least one of the following:

[0125] The total number of all downlink symbols and all flexible symbols in an end slot. Flexible symbols are not configured as uplink symbols or are not used for semi-static uplink transmission.

[0126] The first k2 symbols that end the slot;

[0127] The last k2 symbols that end the slot.

[0128] Wherein, k1 and k2 are both positive integers.

[0129] In one embodiment, the time domain resource location of the SBFD subband is determined by at least one of the following:

[0130] In an SBFD period or TDD frame structure period, all symbols are regarded as a set, and a start symbol is indicated from the set. The default end symbol is the last symbol of the remaining symbols in the SBFD period or TDD frame structure period except for the UL subband and flexible symbols. All symbols from the start symbol to the end symbol are configured as SBFD subbands. Flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and slot format indicator (SFI).

[0131] When an SBFD period contains at least two TDD frame structure periods, all symbols in the TDD frame structure period in which the SBFD subband is configured are taken as a set, and a start symbol is indicated from the set. The default end symbol is the last symbol of the remaining symbols excluding the UL subband and flexible symbols in the TDD frame structure period in which the SBFD subband is configured. All symbols from the start symbol to the end symbol are configured as SBFD subbands. Flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI.

[0132] In an SBFD period or TDD frame structure period, all slots are regarded as a set, and a starting slot is indicated from the set. The first symbol or predefined symbol in the starting slot is used as the start symbol of the SBFD subband, and the default end symbol is the last symbol of the remaining symbols in the SBFD period or TDD frame structure period except for the UL subband and flexible symbols. All symbols from the start symbol to the end symbol are configured as SBFD subbands; flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI;

[0133] When an SBFD period contains at least two TDD frame structure periods, all slots in the TDD frame structure period in which the SBFD subband is configured are taken as a set, and a starting slot is indicated from the set. The first symbol or predefined symbol in the starting slot is used as the starting symbol of the SBFD subband, and the default end symbol is the last symbol of the remaining symbols except the UL subband and flexible symbols in the TDD frame structure period in which the SBFD subband is configured. All symbols from the start symbol to the end symbol are configured as the SBFD subband; the flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI.

[0134] In one embodiment, if the first SCS is a reference SCS and the first SCS is smaller than the second SCS, the slot and / or symbol of the SBFD subband corresponding to the second SCS is determined based on the slot and / or symbol of the SBFD subband corresponding to the first SCS; the slot and / or symbol of the SBFD subband corresponding to the second SCS overlap and correspond to the slot and / or symbol of the SBFD subband corresponding to the first SCS in the time domain; the slot and / or symbol of the SBFD subband corresponding to the first SCS is configured based on the reference SCS.

[0135] In one embodiment, the method for determining the time-frequency resources of the SBFD subband according to the resource configuration information may include: determining the time-domain resources of the SBFD subband according to the time-domain configuration information; and determining the frequency-domain resources of the SBFD subband according to the frequency-domain configuration information.

[0136] Specifically, based on the frequency domain configuration information, the frequency domain resources of the SBFD subband can be determined using any of the following methods: Method 1: Determine the CRB of the SBFD subbands of a carrier within the carrier bandwidths corresponding to different SCSs based on the frequency domain configuration information. Method 2: Determine the CRB of the SBFD subbands of a carrier within the carrier bandwidth corresponding to one SCS based on the frequency domain configuration information; and determine the CRB of the SBFD subbands within the carrier bandwidths corresponding to the remaining SCSs based on the CRB of the SBFD subband within the carrier bandwidth corresponding to one SCS.

[0137] In one embodiment, SBFD subbands within different carrier bandwidths satisfy at least one of the following rules:

[0138] The frequency domain resources of the SBFD subband remain continuous;

[0139] The first subcarrier of the starting CRB of one SBFD subband is aligned with the center of the first subcarrier of the starting CRB of another SBFD subband;

[0140] The last subcarrier of the end CRB of one SBFD subband is aligned with the center of the last subcarrier of the end CRB of another SBFD subband;

[0141] The center of the last subcarrier of the ending CRB of one SBFD subband is aligned with the end of the last subcarrier of the last CRB of another SBFD subband;

[0142] The center of the first subcarrier of the starting CRB of one SBFD subband is aligned with the start of the first subcarrier of the starting CRB of another SBFD subband;

[0143] The number of CRBs in one SBFD subband is twice the number of CRBs in another SBFD subband. u2-u1 times, u1 and u2 are both constants, satisfying the SCS of an SBFD subband of 15KHz*2 u1 , the SCS of the other SBFD sub-band is 15KHz*2 u2 , and u2 is greater than u1;

[0144] An SBFD subband includes an integer number of CRBs corresponding to the SCS.

[0145] The following describes the configuration of SBFD subbands from the time domain and frequency domain respectively, to illustrate the resource determination method provided by this application. In the following example, the first communication node is a UE and the second communication node is a base station.

[0146] Example 1-1 of configuring SBFD subbands in the time domain

[0147] The base station and the UE agree that the base station determines which symbols in an SBFD period are configured as SBFD subbands based on at least one of a start slot, a start symbol, an end slot, and an end symbol.

[0148] The period of an SBFD subband (denoted as an SBFD period) is equal to one or more TDD frame structure periods. The following method can be used to configure the slots and / or symbols of the SBFD subband in an SBFD period (or a TDD frame structure period).

[0149] Parameter 1: starting slot

[0150] Parameter 1 is used to describe the first slot configured as the SBFD subband in an SBFD period (or TDD frame structure period). The specific signaling design involves determining the number of bits in Parameter 1 based on the total number of all S slots and / or all flexible slots (F slots), as well as the total number of all DL slots (excluding UL slots) in an SBFD period (or TDD frame structure period). For example, an SBFD period (or TDD frame structure period) includes seven DL slots, one S slot, and two UL slots. Assuming the base station indicates to the UE (or the base station and UE agree) that the SBFD subband is configured in the DL slot, S slot, and F slot, and the base station determines that there are eight slots, seven DL slots and one S slot, in an SBFD period (or TDD frame structure period), Parameter 1 can be 3 bits. Of course, if the signaling overhead of Parameter 1 is not considered, the number of bits in Parameter 1 can also be determined based on the total number of slots in an SBFD period (or TDD frame structure period). The value of parameter 1 is determined based on the first slot (or the first D slot, or the first S slot, or the first F slot) in the SBFD period (or the TDD frame structure period).

[0151] It should be noted that the S slot contains at least one UL symbol and at least one DL symbol. If a slot contains DL symbols, the slot is called a DL slot. In this application, if a slot contains flexible symbols (F symbols), the slot is called an F slot. If all F symbols in an F slot are configured as UL symbols by TDD-UL-DL-ConfigDedicated and downlink control information (Downlink Control Information, DCI) signaling (for example, SFI in DCI format 2_0), or all F symbols are configured for semi-static uplink transmission (for example, physical uplink shared channel (PUSCH) / physical uplink control channel (PUCCH) / physical random access channel (PRACH) / sounding reference signal (SRS)), then the F slot is not included in the F slot described in this application, otherwise the F slot is included in the F slot described in this application.

[0152] Parameter 1 can also indicate the maximum number of slots allowed to be configured for an SBFD subband within an SBFD period or a TDD frame structure period. That is, from all S slots and / or all F slots, and all DL slots (or from the remaining slots except the UL slots) in the SBFD period (or TDD frame structure period), the SBFD subband is allowed to be configured with n slots. The value of n can be configured by the base station or agreed upon by the base station and the UE. For example, the n slots here can be the maximum number of SBFD slots allowed to be configured in the SBFD period (or TDD frame structure period) agreed upon by the base station and the UE. If the value of n is not configured, it is assumed that all S slots and / or all F slots, and all DL slots (or from the remaining slots except the UL slots) in the SBFD period (or TDD frame structure period) are allowed to be configured with the SBFD subband. The n slots may be the first n or last n slots of all S slots and / or all F slots, and all DL slots (or the remaining slots excluding the UL slots) in an SBFD cycle (or TDD frame structure cycle). For example, the n DL slots may be the first n DL slots or the last n DL slots in an SBFD cycle (or TDD frame structure cycle); or if an SBFD cycle (or TDD frame structure cycle) includes two TDD frame structure cycles, the n DL slots may be the first n DL slots or the last n DL slots in the second (or first) TDD frame structure cycle in the SBFD cycle (or TDD frame structure cycle) (the specific TDD frame structure cycle number may be indicated by signaling or predefined in advance). Alternatively, a set may be agreed upon or configured, the set including n values, for example, the set including the values ​​{1, 2, 3, 4}, and the number of bits of parameter 1 may be determined based on the number of elements configured in the set, thereby reducing the signaling overhead of parameter 1. Alternatively, if the set is not configured, the base station and UE agree that the first DL slot in the SBFD period (or TDD frame structure period) is the above-mentioned starting slot, thereby saving the signaling overhead of parameter 1. Alternatively, if the set is configured but the base station does not provide parameter 1 (based on the set), the base station and UE agree that parameter 1 is equal to the first value in the set, which can also reduce signaling overhead.

[0153] Parameter 1 can also be defaulted. For example, parameter 1 is not provided, but the base station and UE agree on a starting slot in an SBFD cycle (or TDD frame structure cycle). For example, the agreed starting slot is the first (or second) DL slot, or the first (or second) S slot, or the first (or second) F slot (the remaining slots excluding the UL slot) in an SBFD cycle (or TDD frame structure cycle). In other words, the agreed starting slot is a DL slot among the first p (p is configured or pre-defined, for example, p does not exceed 4) DL slots in an SBFD cycle (or TDD frame structure cycle).

[0154] Parameter 2: starting symbol

[0155] Parameter 2 is used to describe the starting symbol of the SBFD subband in the determined starting slot. Parameter 2 is designed to determine the starting symbol in the determined starting slot using a method similar to determining the starting slot within an SBFD period (or TDD frame structure period). The specific signaling design involves determining the number of bits in parameter 2 based on the total number of DL symbols and / or F symbols (excluding UL symbols) within a starting slot. For example, a starting slot contains 7 DL symbols, 1 F symbol, and 2 UL symbols. Assuming the base station indicates to the UE (or the base station and UE agree) that the SBFD subband is configured in DL symbols and F symbols, the base station determines that there are 7 DL symbols and 1 F symbol in the starting slot, for a total of 8 symbols. Therefore, Parameter 2 can be 3 bits. Of course, if the signaling overhead of Parameter 2 is not considered, the number of bits in Parameter 2 can also be determined based on the total number of symbols in the starting slot (14). The value of Parameter 2 is determined based on the first symbol (or the first D symbol or F symbol) in the starting slot.

[0156] It should be noted that in this application, if an F symbol is configured as a UL symbol by TDD-UL-DL-ConfigDedicated and DCI signaling (for example, SFI in DCI format 2_0), or the F symbol is configured for semi-static uplink transmission (for example, PUSCH / PUCCH / PRACH / SRS), then the F symbol is not included in the F symbols described in this application; otherwise, the F symbol is included in the F symbols described in this application.

[0157] Parameter 2 can also be indicated from the k1 symbols (generally DL symbols) in the starting slot. For example, the value of k1 can be configured by the base station, or agreed upon by the base station and the UE. For example, the k1 symbols can be the first k1 (DL) symbols in the starting slot, or the last k1 (DL) symbols. Alternatively, a set can be agreed upon or configured, the set containing k1 values, for example, the set containing the values ​​{1, 2, 3, 4}, and the number of bits of parameter 2 is determined based on the number of elements configured in the set, thereby reducing the signaling overhead of parameter 2. Alternatively, if the set is not configured, the base station and the UE agree that the first symbol in the starting slot is the above-mentioned starting symbol, thereby saving the signaling overhead of parameter 2. Alternatively, if the set is configured, but the base station does not provide parameter 2 (based on the set), the base station and the UE agree that parameter 2 is equal to the first value in the set, which can also reduce the signaling overhead.

[0158] Parameter 2 may also be defaulted, for example, parameter 2 is not provided, but the base station and the UE agree on a starting symbol in the starting slot. For example, the agreed starting symbol is the first (or second) symbol in the starting slot, that is, the agreed starting symbol is a symbol within the first p1 (p1 is configured or predefined, for example, p1 does not exceed 4) symbols in the starting slot.

[0159] Parameter 3: End slot

[0160] Parameter 3 is used to describe the last slot configured as an SBFD subband in an SBFD cycle (or TDD frame structure cycle). Alternatively, parameter 3 is used to describe the number of slots consecutively configured as SBFD subbands, starting from the starting slot, in an SBFD cycle (or TDD frame structure cycle) (i.e., parameter 3 describes the number of consecutive slots, and the following specific signaling design may also be used). The specific signaling design includes: in an SBFD cycle (or TDD frame structure cycle), determining the number of bits of parameter 3 based on all S slots and / or all flexible slots (F slots), and the total number of all DL slots (i.e., excluding UL slots). For example, in an SBFD cycle (or TDD frame structure cycle), there are 7 DL slots, 1 S slot, and 2 UL slots. Assuming the base station indicates to the UE (or the base station and UE agree) that the SBFD subband is configured in the DL slot, S slot, and F slot, and the base station determines that there are 7 DL slots and 1 S slot in an SBFD period (or TDD frame structure period), totaling 8 slots, 3 bits are sufficient for parameter 3. Of course, if the signaling overhead of parameter 3 is not considered, the number of bits of parameter 3 can also be determined based on the number of all slots in an SBFD period (or TDD frame structure period). The value of parameter 3 is determined based on the first slot (or the first D slot, or the first S slot, or the first F slot) in the SBFD period (or TDD frame structure period).

[0161] Parameter 3 may also indicate the maximum number of slots allowed to be configured for an SBFD subband within an SBFD period or a TDD frame structure period. That is, from all S slots and / or all F slots, and all DL slots (or from the remaining slots except the UL slots) in the SBFD period (or TDD frame structure period), the SBFD subband is allowed to be configured with u slots. The value of u may be configured by the base station or agreed upon by the base station and the UE. For example, the u slots here may be the maximum number of SBFD slots allowed to be configured within the SBFD period (or TDD frame structure period) agreed upon by the base station and the UE. If the value of u is not configured, it is assumed that all S slots and / or all F slots, and all DL slots (or from the remaining slots except the UL slots) in the SBFD period (or TDD frame structure period) are allowed to be configured with SBFD subbands. The u slots may be all S slots and / or all F slots in an SBFD cycle (or TDD frame structure cycle), and the first u or last u slots of all DL slots (or the remaining slots excluding the UL slots). For example, the u DL slots and / or S slots may be the last u DL slots and / or S slots, or the first u DL slots and / or S slots in an SBFD cycle (or TDD frame structure cycle); or if an SBFD cycle (or TDD frame structure cycle) includes two TDD frame structure cycles, then the u DL slots may be the first u DL slots or the last u DL slots in the second (or first) TDD frame structure cycle in the SBFD cycle (or TDD frame structure cycle) (the specific TDD frame structure cycle number may be indicated by signaling or predefined in advance). Alternatively, a set may be agreed upon or configured, the set including u values, for example, the set including the values ​​{1, 2, 3, 4}, and the number of bits of parameter 3 may be determined based on the number of elements configured in the set, thereby reducing the signaling overhead of parameter 3. Alternatively, if the set is not configured, the base station and the UE agree that the last DL slot or S slot in the SBFD period (or TDD frame structure period) is the above-mentioned end slot, thereby saving the signaling overhead of parameter 3. Alternatively, if the set is configured but the base station does not provide parameter 3 (based on the set), the base station and the UE agree that parameter 3 is equal to the first value in the set, which can also reduce signaling overhead.

[0162] Parameter 3 can also be defaulted. For example, parameter 3 is not provided, but the base station and UE agree on an end slot in an SBFD cycle (or TDD frame structure cycle). For example, the agreed end slot is the last (or second) DL slot, the last (or second) S slot, or the last (or second) F slot in an SBFD cycle (or TDD frame structure cycle). That is, the agreed end slot is a DL slot, S slot, or F slot among the last p2 (p2 is configured or predefined, for example, p2 does not exceed 4) DL slots, S slots, and / or F slots in an SBFD cycle (or TDD frame structure cycle).

[0163] In another possible implementation, the ending slot can be determined based on the starting slot and the number of consecutive slots. Therefore, parameter 3 is used to describe the number of slots configured as SBFD subbands, starting from the starting slot, within an SBFD period (or TDD frame structure period). The same principle as parameter 3 can be reused and is not further described here. The specific signaling design includes determining the number of bits in parameter 3 based on the total number of all S slots and / or all F slots, as well as the total number of all DL slots (excluding UL slots) within an SBFD period (or TDD frame structure period). For example, an SBFD period (or TDD frame structure period) includes 7 DL slots, 1 S slot, and 2 UL slots. Assuming the base station indicates to the UE (agreed between the base station and the UE) that the SBFD subband is configured in the DL slot, S slot, and F slot, the base station determines that there are 7 DL slots and 1 S slot, for a total of 8 slots, within an SBFD period (or TDD frame structure period). Therefore, parameter 3 can be 3 bits. Of course, without considering the signaling overhead of parameter 3, the number of bits of parameter 3 may also be determined based on the number of all slots in one SBFD period (or TDD frame structure period).

[0164] Parameter 3 may also indicate the maximum number of slots allowed for the SBFD subband within an SBFD cycle or a TDD frame structure cycle. That is, from the DL slots and / or S slots within the SBFD cycle (or TDD frame structure cycle), the SBFD subband is allowed to have u slots. The value of u may be configured by the base station or agreed upon between the base station and the UE. For example, the u DL slots and / or S slots may be the last u DL slots and / or S slots, or the first u DL slots and / or S slots, within an SBFD cycle (or TDD frame structure cycle). Alternatively, if an SBFD cycle (or TDD frame structure cycle) includes two TDD frame structure cycles, the u DL slots and / or S slots may be the last u DL slots and / or S slots, or the first u DL slots and / or S slots, within the second (or first) TDD frame structure cycle within the SBFD cycle (or TDD frame structure cycle). (The specific TDD frame structure cycle number may be indicated by signaling or predefined in advance.) Alternatively, a set containing u values ​​may be agreed upon or configured, for example, the set containing the values ​​{1, 2, 3, 4}, and the number of bits of parameter 3 may be determined based on the number of elements configured in the set, thereby reducing the signaling overhead of parameter 3. Alternatively, if the set is not configured, the base station and the UE may agree that the last DL slot or S slot in the SBFD period (or TDD frame structure period) is the above-mentioned end slot, thereby saving the signaling overhead of parameter 3. Alternatively, if the set is configured but the base station does not provide parameter 3 (based on the set), the base station and the UE may agree that parameter 3 is equal to the first value in the set, which may also reduce signaling overhead.

[0165] Parameter 3 may also be defaulted, for example, parameter 3 is not provided, but the base station and the UE agree on a number of consecutive slots in an SBFD period (or TDD frame structure period). For example, in an SBFD period (or TDD frame structure period), the agreed consecutive slots start from the indicated start slot and end with the first (or second) last DL slot, S slot, or F slot.

[0166] Parameter 4: end symbol

[0167] Parameter 4 is used to describe the end symbol of the SBFD subband in the determined end slot. The specific signaling design includes: within an end slot, the number of bits of parameter 4 is determined based on the total number of all DL symbols and / or F symbols (i.e., excluding UL symbols). For example, in an end slot, there are 7 DL symbols, 1 F symbol and 2 UL symbols. Assuming that the base station indicates to the UE (or the base station and the UE agree) that the SBFD subband is configured in DL symbols and F symbols, the base station determines that there are 7 DL symbols and 1 F symbol in the end slot, a total of 8 symbols, so the bit of parameter 4 is 3 bits. Of course, without considering the signaling overhead of parameter 4, the number of bits of parameter 4 can also be determined based on the number of all symbols in the starting slot (14). It should be noted that the value of parameter 4 in this application is determined based on the first symbol (or the first D symbol or F symbol) in the end slot.

[0168] Parameter 4 can also be indicated from the k2 symbols in the end slot (generally DL symbols or F symbols, excluding UL symbols). For example, the value of k2 can be configured by the base station, or agreed upon by the base station and the UE. For example, the k2 symbols can be the first k2 symbols in the end slot, or the last k2 symbols. Alternatively, a set can be agreed upon or configured, and the set contains k2 values, for example, the set contains the values ​​{1, 2, 3, 4}, and the number of bits of parameter 4 is determined based on the number of elements configured in the set, thereby reducing the signaling overhead of parameter 4. It should be noted that the last 1 symbol means that the end symbol is the last DL symbol or F symbol in the end slot, the last 2 symbols means that the end symbol is the second to last DL symbol or F symbol in the end slot, and so on. Alternatively, if the set is not configured, the base station and the UE agree that the last DL symbol or F symbol in the end slot is the above-mentioned end symbol, thereby saving the signaling overhead of parameter 4. Alternatively, if the set is configured but the base station does not provide parameter 4 (based on the set), the base station and the UE agree that parameter 4 is equal to the first value in the set, which can also reduce signaling overhead.

[0169] Parameter 4 may also be defaulted, for example, parameter 4 is not provided, but the base station and the UE agree on an end symbol in the end slot. For example, the agreed end symbol is the last (or second) DL symbol or F symbol in the end slot, that is, the agreed end symbol is a symbol in the last p3 (p3 is configured or predefined, for example, p3 does not exceed 4) symbols in the end slot.

[0170] Parameter 1, parameter 2, parameter 3, or parameter 4 above can also be defaulted in the following SBFD subband configuration.

[0171] Additionally, within an SBFD period (or TDD frame structure period), the remaining slots (including DL slots, S slots, and F slots) excluding the UL slot are grouped together as a set (the grouping is for descriptive convenience only and does not affect the essence of the method; the original order of these slots remains unchanged in the time domain). The first slot in this set is used as the starting point. Parameters 1 and 3 are used to determine which slots are configured as SBFD subbands. Parameter 2 further describes the starting symbol of the starting slot, and parameter 4 describes the ending symbol of the ending slot. Parameters 3 and 4 can be omitted, so that the ending slot and ending symbol are the last DL symbol or F symbol in the last slot in the set. Parameters 1 and 3 can also be encoded as a single parameter. For example, parameter 1 is the starting slot, and parameter 3 is the number of consecutive slots. Parameters 1 and 3 are then jointly encoded to form a SLIV (Start and Length Indicator Value) parameter (see TS 38.214 for details) to reduce signaling overhead. This allows for the identification of SBFD slots. Then, the start symbol and end symbol are determined using parameters 2 and 4. In the absence of conflict, the relevant restrictions on parameters 1 to 4 can be reused.

[0172] FIG7 is a schematic diagram of configuring an SBFD subband based on Example 1-1 provided by an embodiment. As shown in FIG7 , in the time domain, time domain gaps need to be set on both sides of the SBFD subband. Of course, the first time domain gap can generally be implied in the symbol where the UL subband adjacent to the gap is located or in the DL symbol without being explicitly configured, but the second time domain gap generally needs to be explicitly configured. In any case, due to the existence of the time domain gap, there is potential waste of resources and too many transition points. Here, the transition point refers to the transition point between the SBFD symbol and the non-SBFD symbol, and one transition point corresponds to one gap.

[0173] Figure 8 is a schematic diagram of configuring an SBFD subband based on Example 1-2 provided by an embodiment. As an improved configuration, as shown in Figure 8, in the time domain, a time domain gap needs to be set on both sides of the SBFD subband. Of course, the first time domain gap can generally be implicitly included in the symbol of the UL subband adjacent to the gap or in the DL symbol without being explicitly configured, but the second time domain gap generally needs to be explicitly configured. In Figure 8, since the end of the SBFD subband is configured at the end of the DL symbol / F symbol in the SBFD period (or TDD frame structure period), the second time domain gap overlaps with the gap between the DL symbol and the UL symbol in the TDD frame structure. In other words, the second time domain gap reuses the gap between the DL symbol and the UL symbol in the existing TDD frame structure, thereby reducing the gap and the transition point.

[0174] Therefore, during an SBFD period (or TDD frame period), the end of the SBFD subband is always configured to be within the last DL symbol or F symbol of the SBFD period (or TDD frame period). In other words, the SBFD subband is always configured or defaulted to end within the last DL symbol or F symbol of the SBFD period (or TDD frame period), thereby reducing the time domain gap.

[0175] Example 1-2 of configuring SBFD subbands in the time domain

[0176] In related technologies, the order of the DL slot, S slot, and UL slot in a TDD frame structure is: DL slot, S slot, and UL slot. This approach can reduce the gap between DL slot / symbol and UL slot / symbol in the time domain. Based on this, the present application provides a method for SBFD subband configuration.

[0177] Assume that the base station wants to configure m slots in an SBFD cycle (or TDD frame structure cycle) as SBFD subbands. The specific SBFD subband configuration is as follows: The base station and the UE agree that the last m slots (excluding the UL slot) in an SBFD cycle (or TDD frame structure cycle) are configured as SBFD subbands. That is, in an SBFD cycle (or TDD frame structure cycle), of the remaining slots (including DL slots, S slots, and F slots) excluding the UL slot, m consecutive slots starting from the last slot are configured as SBFD subbands. The value of m is indicated by the base station through signaling or pre-agreed between the base station and the UE. Based on this, the slots corresponding to the SBFD subbands in an SBFD cycle (or TDD frame structure cycle) are determined. The same SBFD slot pattern (slots configured with SBFD subbands are referred to as SBFD slots) is then repeated in each SBFD cycle (or TDD frame structure cycle).

[0178] For example, the base station indicates the value of m to the UE via signaling (such as RRC signaling or DCI signaling or Media Access Control control element (MAC CE) signaling). The number of bits of the signaling is determined based on the number of the remaining slots in the SBFD period. When the UE receives the value of m, the UE considers configuring the last m S slots and / or F slots, and the DL slot in an SBFD period (or TDD frame structure period) as SBFD subbands. In this way, only one parameter is configured to determine the SBFD slot, which not only reduces the signaling overhead, but also keeps the slot of the configured SBFD subband and the UL slot continuous in the SBFD period (or TDD frame structure period), thereby reducing the gap between the SBFD symbol and the non-SBFD symbol in the time domain.

[0179] Within the configured SBFD slot, the symbols configured as the SBFD subband are further determined. For example, parameters 2 and 4 from Example 1-1 above are reused. For example, parameter 2 is used to describe the starting symbol of the SBFD subband within the determined starting slot. For example, parameter 4 is used to describe the ending symbol of the SBFD subband within the determined ending slot.

[0180] If the minimum signaling overhead is considered, both parameter 2 and parameter 4 can be defaulted. For example, when parameter 2 is defaulted, it means that the first symbol in the starting slot is used as the starting symbol. When parameter 4 is defaulted, it means that the last symbol in the ending slot is used as the ending symbol. In this way, in the improved example 1-2, only signaling is required to indicate the value of m. In order to reduce the gap, parameter 4 can always be defaulted, that is, parameter 4 is not needed. For example, the base station and UE always default that the SBFD subband ends in the last DL symbol or F symbol (excluding UL symbols) of the SBFD period (or TDD frame structure period). In this way, two parameters (ending slot and ending symbol) can be reduced, and the time domain gap can also be effectively reduced.

[0181] Example 2-1 of configuring SBFD subbands in the time domain

[0182] Another improved configuration method specifically includes: within an SBFD period (or TDD frame structure period), the symbols allowed to be configured as SBFD subbands are grouped as a symbol set (the term "symbol set" is used for convenience only and does not affect the method itself; the original order of these symbols in the time domain remains unchanged). The last symbol of the symbol set is used as the starting point, and a parameter is used to describe the number of consecutive symbols in the set that are configured as SBFD subbands. The number of bits of this parameter is determined based on the number of symbols in the set. Alternatively, the first symbol of the symbol set is used as the starting point, and a parameter is used to describe the starting symbol of the set that is configured as an SBFD subband. By default, all symbols determined until the last symbol in the set are configured as SBFD subbands. Alternatively, the first symbol of the symbol set is used as the starting point, and two parameters are used to describe the number of consecutive symbols and the starting symbol of the set that are configured as SBFD subbands. For example, one parameter describes the number of consecutive symbols, and the other describes the starting symbol. These two parameters can be encoded as a single SLIV parameter, i.e., the starting symbol and the number of symbols can be jointly encoded into a single SLIV parameter, thereby reducing overhead.

[0183] The symbols allowed to be configured as SBFD subbands include: DL symbols and / or F symbols, but not UL symbols. The F symbols are not configured for semi-static UL transmission (e.g., PUSCH / PUCCH / PRACH / SRS), or are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and DCI signaling (e.g., SFI in DCI format 2_0) (refer to TS38.212).

[0184] Example 2-2 of configuring SBFD subbands in the time domain

[0185] Another improved configuration method specifically includes: within an SBFD period (or TDD frame structure period), the slots allowed to configure SBFD subbands are grouped as a slot set (the term "slot set" is used for convenience only and does not affect the method itself; the original order of these slots remains unchanged in the time domain). The last slot of the slot set is used as the starting point, and a parameter is used to describe the number of consecutive slots in the set that are configured as SBFD subbands. Alternatively, the last slot of the slot set is used as the starting point, and two parameters are used to describe the number and slot positions of consecutive slots in the set that are configured as SBFD subbands, respectively. For example, one parameter describes the number of slots, and one parameter describes the starting slot. These two parameters can be encoded into a single parameter, i.e., the starting slot and the number of slots can be jointly encoded into a single parameter, thereby reducing overhead, i.e., the SLIV structure. Within the determined SBFD slot, SBFD symbols are further configured based on the above method. For example, the symbols of the SBFD subband are determined by configuring the starting symbol and the number / end symbol of the symbol.

[0186] The slots that allow SBFD subband configuration include: S slots and / or F slots, as well as DL slots, but not UL slots. All symbols in the F slot are not configured for semi-static UL transmission (e.g., PUSCH / PUCCH / PRACH / SRS), or all F symbols in the F slot are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI in DCI format 2_0 (refer to TS38.212).

[0187] In some cases, if an SBFD period includes two or more TDD frame structure periods, the following SBFD subband configuration methods are considered:

[0188] Method 1: Within an SBFD cycle, SBFD subbands are configured based on the TDD frame structure period. Specifically, SBFD subbands are configured independently within each TDD frame structure period. Thus, within an SBFD cycle, each TDD frame structure period reuses any of the above SBFD subband configuration methods. The number of bits in Parameter 1 and Parameter 3 is determined based on the remaining slots in the TDD frame structure period, excluding the UL slot.

[0189] Method 2: Within an SBFD period, the TDD frame structure periods in which the SBFD subband is to be configured are indicated or predefined through signaling. In the determined TDD frame structure period, any one of the above-mentioned SBFD subband configuration methods is multiplexed. If Example 1-1 is adopted, the number of bits of Parameter 1 and Parameter 3 is determined based on the remaining slots other than the UL slot in the indicated / determined one or more TDD frame structure periods; if the above-mentioned slot set or symbol set method is adopted (such as Example 1-2, Example 2-1, Example 2-2), the slot set or symbol set should include the valid slots or symbols in the determined TDD frame structure period, excluding some F slots or F symbols, and excluding UL slots or UL symbols in the above-mentioned method.

[0190] To enable flexible configuration, if no TDD frame structure period is specified for an SBFD period, all TDD frame structures within the SBFD period are assumed to be configured with SBFD subbands, using any of the aforementioned SBFD subband configuration methods. The number of bits in Parameter 1 and Parameter 3 is determined based on the remaining slots, excluding the UL slot, in all TDD frame structures within the SBFD period.

[0191] Note 1: In this application, in Example 1-1, when determining the number of bits of the parameter, it can also be based on the number of all slots or the number of all symbols in the SBFD period, for example, including UL slots, UL symbols, and all F slots, F symbols, without removing UL slots, UL symbols, and without removing F symbols / slots configured as UL symbols or F symbols / slots configured with semi-static UL transmission.

[0192] Note 2: In the present application, in Example 1-2, Example 2-1 or Example 2-2, when determining a slot set or a symbol set, the set may be based on the number of all slots or the number of all symbols in the SBFD period, for example, including UL slots, UL symbols, and also including all F slots, F symbols, without removing UL slots, UL symbols, and without removing F symbols / slots configured as UL symbols or without removing F symbols / slots configured with semi-static UL transmission.

[0193] In this application, since a carrier can be configured with multiple different SCSs, a corresponding SBFD subband can be configured within the carrier based on each SCS. So, how can we simplify the configuration of SBFD subbands corresponding to different SCSs? The following method is provided.

[0194] Rule: The base station and UE agree that if a carrier can be configured with different SCSs, such as SCS1 = 15 kHz and SCS2 = 30 kHz, then in the time domain, SBFD subbands configured based on different SCSs are required to have the same time domain position (e.g., slot and symbol). For example, the base station and UE agree that based on a reference SCS (e.g., assuming the reference SCS is the smallest (or largest) SCS among the carrier's configured SCSs, here assuming the reference SCS is SCS1 = 15 kHz), some slots and symbols are configured with SBFD subbands. Then, the slots or symbols corresponding to SCS = 30 kHz that overlap with these slots and symbols in the time domain are also configured with SBFD subbands. In this way, the base station only configures one SBFD subband based on a certain SCS. The slots and symbols of the SBFD subband corresponding to the other SCS can be determined based on the above rules, thereby reducing signaling overhead. The reference SCS can be configured by the base station, for example, the value of the reference SCS is no greater than any of the SCSs of all BWPs on the carrier. This SCS corresponds to the shortest slot / symbol. When configuring SBFD slots / symbols using this slot / symbol as the basic unit, it is easy to align the boundaries of SBFD slots / symbols with different SCSs. For a carrier, this reference SCS is used to determine the time domain boundaries of the SBFD slot / symbol pattern, which must be common across all subcarrier spacings.

[0195] Assume that the u corresponding to the SCS of a carrier are u1 and u2 respectively, and u1 is less than or equal to u2 (the relationship between u and SCS is shown in Table 1).

[0196] Table 1: Relationship between u and SCS (applicable to this application)

[0197] If the reference SCS corresponds to u1, and the corresponding slot m is configured as an SBFD subband, and it is assumed that another SCS of the carrier corresponds to u2, then for the other SCS, the slot configured as the SBFD subband is: slot(2 u2-u1 ×m) to slot(2 u2-u1 ×m+2 u2-u1 -1). If the reference SCS corresponds to u1, and the corresponding symbol k is configured as an SBFD subband, and the other SCS of the carrier corresponds to u2, then for the other SCS, the symbol configured as the SBFD subband is: (2 u2-u1 ×k+2 u2-u1 -1). The above formula is applicable when u1 is less than or equal to u2.

[0198] If the reference SCS is the largest among the different SCSs for the carrier, the above formula no longer applies. However, the following rule still applies: In the time domain, corresponding SBFD subbands configured based on different SCSs are required to have the same time domain position (e.g., slot and symbol). For example, if a carrier is configured with 15 kHz and 30 kHz SCSs, and the reference SCS is 30 kHz, and slot t is configured as an SBFD subband, then when the SCS is 15 kHz, the slots or symbols that overlap with slot t in the time domain are configured as SBFD subbands (slots or symbols that do not overlap with slot t in the time domain are not configured as SBFD subbands).

[0199] In this way, the base station only configures the SBFD subband in the time domain based on the reference SCS, and then uses the above rules to obtain the SBFD subband corresponding to another SCS at the time domain position (slot and / or symbol), thereby reducing configuration signaling.

[0200] Figure 9 is a schematic diagram provided by an embodiment of configuring an SBFD subband in the time domain based on a reference SCS, and obtaining an SBFD subband corresponding to another SCS in the time domain. A carrier is configured with two SCSs of 15KHz and 30KHz. Assuming that Figure 9 is an SBFD period and 15KHz is the reference SCS, the base station configures the SBFD subband in the time domain as shown in Figure 9, that is, the 2nd to 8th slots (or symbols) are configured as SBFD subbands. Then, the base station and the UE further agree that the slot (or symbol) where the SBFD subband configured with SCS2 = 30KHz for the carrier overlaps with the slot (or symbol) where the SBFD subband configured with SCS1 = 15KHz is located in the time domain. That is, when SCS2 = 30KHz, the slot (or symbol) of the SBFD subband is: the 3rd to 16th slot (or symbol). Note: The numbers in Figure 9 are only sequential numbers, for the convenience of description only, and are not slot indices or symbol indices.

[0201] Figure 10 is a schematic diagram of another SBFD subband configuration method based on Example 1-1, provided by an embodiment. An SBFD period includes two TDD frame structure periods, and the above-described SBFD subband configuration method is used in each TDD frame structure period. In Figure 10 , the frame structures in the two TDD frame structure periods are identical, and the same SBFD subband is configured in these two TDD frame structure periods. Of course, different SBFD subbands are configured in these two TDD frame structure periods.

[0202] The SBFD subband configuration result in FIG10 can also be configured based on the above example 1-2. One SBFD period includes two TDD frame structure periods. The above example 1-1 is used to configure the SBFD subband in each TDD frame structure period.

[0203] The SBFD subband configuration results in Figure 10 can also be configured based on the above example 2-1. One SBFD period includes two TDD frame structure periods. The symbols allowed to be configured with SBFD subbands in each TDD frame structure period are used as a symbol set. The above example 2-1 is used to configure the SBFD subbands in each TDD frame structure period.

[0204] The SBFD subband configuration result in Figure 10 can also be configured based on the above example 2-2. One SBFD period includes two TDD frame structure periods. The symbols allowed to be configured with SBFD subbands in the SBFD period are regarded as a symbol set, and then the above example 2-1 is used to configure the SBFD subbands in the SBFD period.

[0205] Figure 11 is a schematic diagram of another SBFD subband configuration based on Example 1-2, provided by an embodiment. As an improved configuration, an SBFD period includes two TDD frame structure periods. The number of slots configured as SBFD subbands is configured, starting from the last DL slot, S slot, or F slot in the SBFD period. Figure 11 can also be understood as a configuration based on Example 2-1 above.

[0206] In the case where an SBFD period includes two or more TDD frame structure periods, the base station and UE can also determine, through signaling configuration or pre-agreed agreement, in which TDD frame structure period within the SBFD period the SBFD subband is to be configured. In this way, the above-mentioned SBFD subband configuration method can be used for the determined TDD frame structure period.

[0207] In the various methods for configuring SBFD subbands described above, the base station can configure the corresponding parameter values ​​and send them to the UE. The base station then determines the resources for an SBFD subband based on the parameter values ​​and meanings. The UE receives the parameters and determines the resources for an SBFD subband based on the parameter values ​​and meanings. The base station and UE can also reduce the configuration and transmission of some parameters by using default or predefined rules. For example, the base station determines the resources for an SBFD subband based on the rules and the configured parameter values. The UE then determines the resources for an SBFD subband based on the rules and the received parameter values.

[0208] Example 3: Configuring SBFD Subbands in the Frequency Domain

[0209] The carrier bandwidth is configured based on the carrier's SCS, and within each carrier bandwidth, SBFD subbands are configured based on the SCS and the CRB corresponding to the SCS. Each carrier's SCS corresponds to a CRB grid, and SBFD subbands are configured based on the CRB corresponding to the SCS.

[0210] Example 3 offers high flexibility, but without constraints, obtaining SBFD subbands corresponding to different SCSs for a carrier based on Example 3 would complicate the base station's SBFD subband operations. For example, the frequency domain resources (e.g., subcarriers) actually used by different SBFD subbands are not aligned in the frequency domain. This further complicates the design of the base station's analog filters when performing reception / transmission in different SBFD subbands. Figures 12 to 15 show four examples of frequency domain alignment of frequency domain resources actually used by different SBFD subbands, provided by one embodiment.

[0211] Different SBFD subbands are determined based on different SCSs of a carrier. These SBFD subbands should comply with at least one of the following rules. That is, the base station should comply with at least one of the following rules when configuring different SBFD subbands:

[0212] Rule 1: For a carrier, if different SBFD subbands are configured based on different SCSs of that carrier, the frequency domain resources of the configured SBFD subbands remain continuous, that is, there are no gaps in the frequency domain. This rule includes: in the frequency domain, different SBFD subbands completely or partially overlap, and there must be no frequency domain gaps between different SBFD subbands. For example, Figures 12, 13, and 15 illustrate this. In this way, when performing SBFD subband operations on the base station side, it can be performed using the union of the frequency domain resources of different SBFD subbands. Note that in Figure 14, there are frequency domain gaps between different SBFD subbands.

[0213] Alternatively, the base station and UE may agree to consider overlapping frequency domain resources between different SBFD subbands as SBFD subbands available for all SCSs of the carrier. In this way, the actual frequency domain resources of the SBFD subbands corresponding to all SCSs of the carrier are the same, which also facilitates the base station to perform SBFD operations. Furthermore, if different SBFD subbands are not continuous in the frequency domain, such as the different SBFD subbands in Figure 14, the base station and UE may agree that the different SBFD subbands are invalid SBFD subbands, or that only the SBFD subband corresponding to the minimum (or maximum) SCS is valid.

[0214] Rule 2: For a carrier, the frequency domain resource requirements for different SBFD subbands configured must include at least one of the following:

[0215] The first subcarrier (subcarrier 0) of the starting CRB of SBFD subband 1 is aligned with the center of the first subcarrier (subcarrier 0) of the starting CRB of SBFD subband 2. And / or, the center of the last subcarrier (subcarrier 11) of the ending CRB of SBFD subband 1 is aligned with the end of the last subcarrier (subcarrier 11) of the ending CRB of SBFD subband 2. Figure 16 is a schematic diagram of a different frequency domain resource configuration for SBFD subbands provided by an embodiment.

[0216] The last subcarrier (subcarrier 11) of the ending CRB of SBFD subband 1 is aligned with the center of the last subcarrier (subcarrier 11) of the ending CRB of SBFD subband 2. And / or, the center of the first subcarrier (subcarrier 0) of the starting CRB of SBFD subband 1 is aligned with the start of the first subcarrier (subcarrier 0) of the starting CRB of SBFD subband 2. Figure 17 is a schematic diagram of another different SBFD subband frequency domain resource configuration provided by an embodiment.

[0217] The number of frequency domain CRBs in SBFD subband 1 is twice the number of frequency domain CRBs in SBFD subband 2. u2-u1 times, u1 and u2 satisfy: SCS1=15KHz*2 u1 , SCS2=15KHz*2 u2 Both u1 and u2 are integers greater than or equal to 0. Optionally, u2 is greater than u1.

[0218] SBFD subband 1 contains an integer number of CRBs corresponding to SCS1.

[0219] SBFD subband 2 contains an integer number of CRBs corresponding to SCS2.

[0220] For example, the configuration in Figure 16 can also be described as follows: the first subcarrier (subcarrier 0) of the starting CRB of SBFD subband 1 is aligned with the center of the first subcarrier (subcarrier 0) of the starting CRB of SBFD subband 2. The number of frequency-domain CRBs in SBFD subband 1 is twice the number of frequency-domain CRBs in SBFD subband 2. u2-u1 times.

[0221] For example, the configuration in FIG17 can also be described as follows: the last subcarrier (subcarrier 11) of the end CRB of SBFD subband 1 is aligned with the center of the last subcarrier (subcarrier 11) of the end CRB of SBFD subband 2. The number of frequency-domain CRBs in SBFD subband 1 is twice the number of frequency-domain CRBs in SBFD subband 2. u2-u1 times.

[0222] The SBFD subbands include one or two DL subbands and one UL subband, as well as the frequency domain gap between the DL subbands and the UL subbands. A CRB or RB includes 12 subcarriers, numbered 0-11.

[0223] About UL sub-band configuration

[0224] In a carrier, different UL subbands can be configured based on different SCSs of a carrier and the CRBs corresponding to each SCS. Therefore, the UL subbands corresponding to different SCSs also need to meet certain requirements. This can effectively reduce the complexity of the base station, for example, simplifying the base station's UL reception from UL subbands configured with different SCSs.

[0225] The requirements for different UL subbands include: the aforementioned configuration method for SBFD subbands can be applied to the corresponding UL subband configuration. Similarly, the rules for different SBFD subbands also apply to different UL subbands (different UL subbands correspond to SCS1 and SCS2, respectively). For example, this can be achieved by simply replacing the SBFD subband with a UL subband. The following example only uses the aforementioned rule 2 and will not be repeated.

[0226] For a carrier configured with SCS1 and SCS2, corresponding UL subband 1 and UL subband 2 are configured for SCS1 and SCS2 respectively, and UL subband 1 and UL subband 2 are required to meet at least one of the following requirements:

[0227] The first subcarrier (subcarrier 0) of the starting CRB of UL subband 1 is aligned with the center of the first subcarrier (subcarrier 0) of the starting CRB of UL subband 2. And / or, the center of the last subcarrier (subcarrier 11) of the ending CRB of UL subband 1 is aligned with the end of the last subcarrier (subcarrier 11) of the ending CRB of UL subband 2. For example, referring to FIG16 , "SBFD" is replaced with "UL".

[0228] The last subcarrier (subcarrier 11) of the ending CRB of UL subband 1 is aligned with the center of the last subcarrier (subcarrier 11) of the ending CRB of UL subband 2. And / or, the center of the first subcarrier (subcarrier 0) of the starting CRB of UL subband 1 is aligned with the start of the first subcarrier (subcarrier 0) of the starting CRB of UL subband 2. For example, referring to Figure 17, "SBFD" is replaced with "UL".

[0229] The number of frequency-domain CRBs for UL sub-band 1 is twice the number of frequency-domain CRBs for UL sub-band 2. u2-u1 times, u1 and u2 satisfy: SCS1=15KHz*2 u1 , SCS2=15KHz*2 u2 Both u1 and u2 are integers greater than or equal to 0. Optionally, u2 is greater than u1.

[0230] UL subband 1 contains an integer number of CRBs corresponding to SCS1.

[0231] UL subband 2 contains an integer number of CRBs corresponding to SCS2.

[0232] For example, the SBFD subband in Figure 16 can be replaced by a UL subband. In this way, the illustration of the SBFD subband in Figure 16 is modified to that of the UL subband. Thus, the configuration of the UL subband in Figure 16 can be described as follows: the first subcarrier (subcarrier 0) of the starting CRB of UL subband 1 is aligned with the center of the first subcarrier (subcarrier 0) of the starting CRB of UL subband 2. The number of frequency-domain CRBs in UL subband 1 is twice the number of frequency-domain CRBs in UL subband 2. u2-u1 times.

[0233] Similarly, for example, the SBFD subband in FIG17 can be replaced by a UL subband. Thus, the configuration of the UL subband in FIG17 can be described as follows: the last subcarrier (subcarrier 11) of the end CRB of UL subband 1 is aligned with the center of the last subcarrier (subcarrier 11) of the end CRB of UL subband 2. The number of frequency-domain CRBs in SBFD subband 1 is twice the number of frequency-domain CRBs in SBFD subband 2. u2-u1 times.

[0234] About DL subband configuration

[0235] This can be done by replacing “UL” with “DL” in the above-mentioned method for configuring the UL subband.

[0236] In a carrier, different DL subbands can be configured based on different SCSs of a carrier and the CRBs corresponding to each SCS. Therefore, the DL subbands corresponding to different SCSs must also meet certain requirements. This can effectively reduce the complexity of the base station, for example, simplifying the base station's DL transmission from DL subbands configured with different SCSs.

[0237] The requirements for different DL subbands include: the configuration method for SBFD subbands described above can be applied to the corresponding DL subband configuration. Similarly, the rules for different SBFD subbands also apply to different DL subbands (different DL subbands correspond to SCS1 and SCS2, respectively). For example, simply replacing the SBFD subband with a DL subband can be sufficient. The following only uses the above rule 2 as an example and will not be repeated.

[0238] For a carrier configured with SCS1 and SCS2, corresponding DL subband 1 and DL subband 2 are configured for SCS1 and SCS2 respectively, and DL subband 1 and DL subband 2 are required to meet at least one of the following requirements:

[0239] The first subcarrier (subcarrier 0) of the starting CRB of DL subband 1 is aligned with the center of the first subcarrier (subcarrier 0) of the starting CRB of DL subband 2. And / or, the center of the last subcarrier (subcarrier 11) of the ending CRB of DL subband 1 is aligned with the end of the last subcarrier (subcarrier 11) of the ending CRB of DL subband 2. For example, referring to Figure 16 , "SBFD" is replaced with "DL".

[0240] The last subcarrier (subcarrier 11) of the ending CRB of DL subband 1 is aligned with the center of the last subcarrier (subcarrier 11) of the ending CRB of DL subband 2. And / or, the center of the first subcarrier (subcarrier 0) of the starting CRB of DL subband 1 is aligned with the start of the first subcarrier (subcarrier 0) of the starting CRB of DL subband 2. For example, referring to Figure 17, "SBFD" is replaced with "DL".

[0241] The number of frequency-domain CRBs for DL ​​subband 1 is twice the number of frequency-domain CRBs for DL ​​subband 2. u2-u1 times, u1 and u2 satisfy: SCS1=15KHz*2 u1 , SCS2=15KHz*2 u2 Both u1 and u2 are integers greater than or equal to 0. Optionally, u2 is greater than u1.

[0242] DL subband 1 contains an integer number of CRBs corresponding to SCS1.

[0243] DL subband 2 contains an integer number of CRBs corresponding to SCS2.

[0244] For example, the SBFD subband in Figure 16 can be replaced by a DL subband. In this way, the illustration for the SBFD subband in Figure 16 is modified to that for the DL subband. Thus, the configuration of the DL subband in Figure 16 can be described as follows: the first subcarrier (subcarrier 0) of the starting CRB of DL subband 1 is aligned with the center of the first subcarrier (subcarrier 0) of the starting CRB of DL subband 2. The number of frequency-domain CRBs in DL subband 1 is twice the number of frequency-domain CRBs in DL subband 2. u2-u1 times.

[0245] Similarly, for example, the SBFD subband in Figure 17 can be replaced by a DL subband. Thus, the configuration of the DL subband in Figure 17 can be described as follows: the last subcarrier (subcarrier 11) of the end CRB of DL subband 1 is aligned with the center of the last subcarrier (subcarrier 11) of the end CRB of DL subband 2. The number of frequency-domain CRBs in SBFD subband 1 is twice the number of frequency-domain CRBs in SBFD subband 2. u2-u1 times.

[0246] Since the frequency domain pattern of the SBFD subband includes "DUD", for this pattern, the two DL subbands corresponding to SCS1 and the two DL subbands corresponding to SCS2 respectively meet the above requirements.

[0247] About frequency domain gap configuration

[0248] If a carrier has different SCSs, and the carrier bandwidth corresponding to each SCS is configured / determined, and the corresponding DL subbands and UL subbands are respectively configured in different carrier bandwidths, the base station and the UE agree to configure / determine the frequency domain gap between the DL subband and UL subband corresponding to each SCS based on the CRB corresponding to the corresponding SCS.

[0249] For example, a carrier has an SCS1 of 15 kHz and an SCS2 of 30 kHz. The base station configures carrier bandwidth 1 based on SCS1 and the CRB corresponding to SCS1, and configures two DL subbands 1 and one UL subband 1 in carrier bandwidth 1, satisfying the "DUD" pattern. Then, the frequency domain gap2 between DL subband 1 and UL subband 1 (the two gaps remain equal in size) is configured / determined based on the CRB corresponding to SCS1, for example, n CRBs are used as gap1, where n is an integer greater than or equal to 1; the base station configures carrier bandwidth 2 based on SCS2 and the CRB corresponding to SCS2, and configures two DL subbands 2 and one UL subband 2 in carrier bandwidth 2, satisfying the "DUD" pattern. Then, the frequency domain gap2 between DL subband 2 and UL subband 2 (the two gaps remain equal in size) is configured / determined based on SCS2 and the CRB corresponding to SCS2, for example, n1 CRBs are used as gap2, where n1 is an integer greater than or equal to 1.

[0250] The gap sizes between the UL subband and DL subband corresponding to different SCSs are independent and can have different sizes. Gap1 and gap2 are aligned with the center of the first subcarrier on the UL subband side in the starting CRB on the UL subband side.

[0251] Furthermore, it is also possible to require that the frequency domain resources of gap1 and gap2 are the same size. In this case, it is necessary to determine which gap to use as the reference gap, and then align the other gap with the reference gap in the frequency domain. For example, the maximum or minimum SCS in the SCS configured for the carrier is used as the reference SCS, and the gap between the UL subband and the DL subband corresponding to the reference SCS is used as the reference gap, and the gaps corresponding to other SCSs are aligned with the reference gap in the frequency domain resources. Of course, there is no need for a reference gap, but instead corresponding gap1 and gap2 are configured for SCS1 and SCS2 respectively, and the configured gap1 and gap2 are required to meet at least one of the following requirements:

[0252] The first subcarrier (subcarrier 0) of the starting CRB of gap1 is aligned with the center of the first subcarrier (subcarrier 0) of the starting CRB of gap2. And / or, the center of the last subcarrier (subcarrier 11) of the ending CRB of gap1 is aligned with the end of the last subcarrier (subcarrier 11) of the ending CRB of gap2. For example, referring to Figure 16, replace "SBFD subband" with "gap".

[0253] The last subcarrier (subcarrier 11) of the ending CRB of gap1 is aligned with the center of the last subcarrier (subcarrier 11) of gap2 (of the ending CRB). And / or, the center of the first subcarrier (subcarrier 0) of the starting CRB of gap1 is aligned with the start of the first subcarrier (subcarrier 0) of gap2 (of the starting CRB). For example, referring to Figure 17, replace "SBFD subband" with "gap".

[0254] The number of frequency domain CRBs in gap1 is twice the number of frequency domain CRBs in gap2 u2-u1 times, u1 and u2 satisfy: SCS1=15KHz*2 u1 , SCS2=15KHz*2 u2 . u1 and u2 are both integers greater than or equal to 0.

[0255] gap1 contains an integer number of CRBs corresponding to SCS1.

[0256] gap2 contains an integer number of CRBs corresponding to SCS2.

[0257] Gap1 contains an integer number of CRBs corresponding to SCS1, and the frequency domain of Gap2 is located in the same size and position as the frequency domain resources of Gap1. In this case, Gap2 may not contain an integer number of CRBs corresponding to SCS2.

[0258] Gap2 contains an integer number of CRBs corresponding to SCS2, and the frequency domain of gap1 is located at the same size and position as that of gap2. In this case, gap still contains an integer number of CRBs corresponding to SCS1.

[0259] About SBFD sub-band frequency domain pattern configuration

[0260] In this application, if a carrier has different SCS (carrier-level SCS) and different SBFD subbands are configured / obtained based on the different SCSs, the base station and the UE agree that the frequency domain patterns of the same SBFD subband are configured with different SBFD subbands. For example, the frequency domain patterns include: "DUD", "DU" and "UD". If different SBFD subbands are configured with different frequency domain patterns, the base station and the UE consider this to be an incorrect configuration.

[0261] Assuming that different SBFD subbands are allowed to be configured with different frequency domain patterns, the UL subband in the SBFD subband is required to still meet the above requirements.

[0262] In the various methods for configuring SBFD subbands described above, the base station can configure the corresponding SBFD subbands, UL subbands, gaps, and frequency domain patterns, ensuring that the above requirements are met, and then send the relevant configuration signaling to the UE. The UE receives the corresponding configuration signaling. The UE expects that the SBFD subbands, UL subbands, gaps, and frequency domain patterns obtained from the configuration signaling meet the above requirements.

[0263] Example 4 of configuring SBFD subbands in the frequency domain

[0264] An SCS is determined / agreed upon from the different SCSs of the carrier, and an SBFD subband, UL subband, or frequency domain gap is configured within the carrier bandwidth corresponding to the SCS based on the SCS and the CRB corresponding to the SCS. The frequency domain resources of the SBFD subband, UL subband, DL subband, or frequency domain gap in the carrier bandwidth corresponding to another SCS are then derived based on the frequency domain resources of the configured SBFD subband, UL subband, DL subband, or frequency domain gap. The determined / agreed upon SCS is the maximum or minimum SCS within the configured SCS of the carrier. Alternatively, the base station configures an SBFD subband based on a reference SCS and the CRB corresponding to the reference SCS. The value of the reference SCS is not less than any of the SCSs of all BWPs of the carrier.

[0265] Example 1:

[0266] According to the minimum SCS and the corresponding CRB, an SBFD subband 1 (or UL subband 1, or DL ​​subband 1 or frequency domain gap 1) is configured / determined, and then according to the SBFD subband 1 (or UL subband 1, or DL ​​subband 1 or frequency domain gap 1), the SBFD subband 2 (or UL subband 2, or DL ​​subband 2 or frequency domain gap 2) corresponding to another SCS is obtained by mapping.

[0267] For example, a carrier has SCS1 = 15KHz and SCS2 = 30KHz. The base station and the UE agree to configure the SBFD subband, UL subband, DL subband or frequency domain gap based on the minimum SCS. First, based on SCS1 and the CRB corresponding to SCS1, the SBFD subband, UL subband, DL subband or frequency domain gap is configured in the carrier bandwidth 1 corresponding to SCS1. Then, based on the frequency domain resources of the configured SBFD subband, UL subband, DL subband or frequency domain gap, another SBFD subband, UL subband, DL subband or frequency domain gap is obtained from the carrier bandwidth 2 corresponding to SCS2 through mapping. Figure 18 is a schematic diagram of frequency domain resource mapping of an SBFD subband provided by an embodiment. For example, in Figures 18 and 16, based on the configured SBFD subband 1 in carrier bandwidth 1, the SBFD subband 2 in carrier bandwidth 2 is obtained through mapping. Similarly, by replacing "SBFD" with "UL", based on the configured UL subband 1 in carrier bandwidth 1, UL subband 2 in carrier bandwidth 2 is obtained through mapping. By replacing "SBFD" with "DL", based on the configured DL subband 1 in carrier bandwidth 1, DL subband 2 in carrier bandwidth 2 is obtained through mapping. By replacing "SBFD subband" with "gap", based on the configured gap1 in carrier bandwidth 1, gap2 in carrier bandwidth 2 is obtained through mapping.

[0268] Specifically, a mapping rule for obtaining another SBFD subband 2, UL subband 2, DL subband 2, or frequency domain gap 2 from a configured SBFD subband 1, UL subband 1, DL subband 1, or frequency domain gap 1 includes at least one of the following:

[0269] The center of the first subcarrier (subcarrier 0) of the starting CRB of SBFD subband 1 (or UL subband 1, or DL ​​subband 1, or frequency domain gap 1) is the same as the center of the first subcarrier (subcarrier 0) of the starting CRB of SBFD subband 2 (or UL subband 2, or DL ​​subband 2, or frequency domain gap 2). And / or, the center of the last subcarrier (subcarrier 11) of the ending CRB of SBFD subband 1 (or UL subband 1, or DL ​​subband 1, or frequency domain gap 1) is aligned with the end of the last subcarrier (subcarrier 11) of the ending CRB of SBFD subband 2, that is, the center of the last subcarrier of the ending CRB of SBFD subband 1 (or UL subband 1, or DL ​​subband 1, or frequency domain gap 1) corresponding to the smaller SCS is aligned with the end of the last subcarrier of the ending CRB of SBFD subband 2 (or UL subband 2, or DL ​​subband 2, or frequency domain gap 2) corresponding to the larger SCS). For example, referring to Figure 16, SBFD subband 1 (or UL subband 1, or DL ​​subband 1 or frequency domain gap 1) is configured, and SBFD subband 2 (or UL subband 2, or DL ​​subband 2 or frequency domain gap 2) is derived based on SBFD subband 1 (or UL subband 1, or DL ​​subband 1 or frequency domain gap 1).

[0270] The center of the last subcarrier (subcarrier 11) of the ending CRB of SBFD subband 1 (or UL subband 1, or DL ​​subband 1, or frequency domain gap 1) is the same as the center of the last subcarrier (subcarrier 11) of the ending CRB of SBFD subband 2 (or UL subband 2, or DL ​​subband 2, or frequency domain gap 2). And / or, the center of the first subcarrier (subcarrier 0) of the starting CRB of SBFD subband 1 (or UL subband 1, or DL ​​subband 1, or frequency domain gap 1) is aligned with the start of the first subcarrier (subcarrier 0) of the starting CRB of SBFD subband 2 (or UL subband 2, or DL ​​subband 2, or frequency domain gap 2). For example, referring to Figure 17, SBFD subband 1 (or UL subband 1, or DL ​​subband 1 or frequency domain gap 1) is configured, and SBFD subband 2 (or UL subband 2, or DL ​​subband 2 or frequency domain gap 2) is derived based on SBFD subband 1 (or UL subband 1, or DL ​​subband 1 or frequency domain gap 1).

[0271] The number of frequency domain CRBs for SBFD subband 1 (or UL subband 1, or DL ​​subband 1, or frequency domain gap 1) is twice the number of frequency domain CRBs for SBFD subband 2 (or UL subband 2, or DL ​​subband 2, or frequency domain gap 2). u2-u1 times, u1 and u2 satisfy: SCS1=15KHz*2 u1 , SCS2=15KHz*2 u2 Both u1 and u2 are integers greater than or equal to 0. Optionally, u2 is greater than u1.

[0272] SBFD subband 1 (or UL subband 1, or DL ​​subband 1 or frequency domain gap 1) contains an integer number of CRBs corresponding to SCS1.

[0273] SBFD subband 2 (or UL subband 2, or DL ​​subband 2 or frequency domain gap 2) contains an integer or non-integer number of CRBs corresponding to SCS2. Optionally, if you do not want SBFD subband 2 (or UL subband 2, or DL ​​subband 2 or frequency domain gap 2) to contain some CRBs corresponding to SCS2, the number of CRBs in SBFD subband 1 (or UL subband 1, or DL ​​subband 1 or frequency domain gap 1) and the number of CRBs in SBFD subband 2 (or UL subband 2, or DL ​​subband 2 or frequency domain gap 2) must satisfy the following requirements: 2 u2-u1 times.

[0274] Regarding obtaining gap2 through mapping from gap1, the following approach can also be considered: For example, in the above example, gap1 is configured / determined based on the minimum SCS (i.e., SCS1) and the corresponding CRB. Assuming that gap1 is determined to contain n3 CRBs corresponding to SCS1, the base station and UE consider that in carrier bandwidth 2 corresponding to another SCS (i.e., SCS2), gap2 contains n3 CRBs corresponding to SCS2. In this case, although both gap1 and gap2 contain n3 CRBs, the frequency domain size corresponding to gap2 is twice that of gap1 because SCS2 is twice that of SCS1.

[0275] Example 2:

[0276] According to the maximum SCS and the corresponding CRB, an SBFD subband 2 (or UL subband 2, or DL ​​subband 2 or frequency domain gap 2) is configured / determined, and then according to the SBFD subband 2 (or UL subband 2, or DL ​​subband 2 or frequency domain gap 2), the SBFD subband 1 (or UL subband 1, or DL ​​subband 1 or frequency domain gap 1) corresponding to another SCS is obtained by mapping.

[0277] For example, a carrier has SCS1 = 15KHz and SCS2 = 30KHz. The base station and the UE agree to configure the SBFD subband, UL subband, DL subband or frequency domain gap based on the maximum SCS. First, based on SCS2 and the CRB corresponding to SCS2, the SBFD subband, UL subband, DL subband or frequency domain gap is configured in the carrier bandwidth 2 corresponding to SCS2. Then, based on the frequency domain resources of the configured SBFD subband, UL subband, DL subband or frequency domain gap, another SBFD subband, UL subband, DL subband or frequency domain gap is obtained from the carrier bandwidth 1 corresponding to SCS1 through mapping. Figure 19 is a schematic diagram of frequency domain resource mapping of another SBFD subband provided by an embodiment. For example, in Figures 19 and 17, based on the configured SBFD subband 2 in carrier bandwidth 2, SBFD subband 1 is obtained by mapping in carrier bandwidth 1. Similarly, by replacing "SBFD" with "UL", UL subband 1 in carrier bandwidth 1 is obtained through mapping based on the configured UL subband 2 in carrier bandwidth 2. By replacing "SBFD" with "DL", DL subband 1 in carrier bandwidth 1 is obtained through mapping based on the configured DL subband 2 in carrier bandwidth 2. By replacing "SBFD subband" with "gap", gap1 in carrier bandwidth 1 is obtained through mapping based on the configured gap2 in carrier bandwidth 2.

[0278] Specifically, a mapping rule for obtaining another SBFD subband 1, UL subband 1, DL subband 1, or frequency domain gap 1 from a configured SBFD subband 2, UL subband 2, DL subband 2, or frequency domain gap 2 includes at least one of the following:

[0279] The center of the first subcarrier (subcarrier 0) of the starting CRB of SBFD subband 2 (or UL subband 2, or DL ​​subband 2, or frequency domain gap 2) is the same as the center of the first subcarrier (subcarrier 0) of the starting CRB of SBFD subband 1 (or UL subband 1, or DL ​​subband 1, or frequency domain gap 1). And / or, the center of the last subcarrier (subcarrier 11) of the ending CRB of SBFD subband 1 (or UL subband 1, or DL ​​subband 1, or frequency domain gap 1) is aligned with the end of the last subcarrier (subcarrier 11) of the ending CRB of SBFD subband 2, that is, the center of the last subcarrier of the ending CRB of SBFD subband 1 (or UL subband 1, or DL ​​subband 1, or frequency domain gap 1) corresponding to the smaller SCS is aligned with the end of the last subcarrier of the ending CRB of SBFD subband 2 (or UL subband 2, or DL ​​subband 2, or frequency domain gap 2) corresponding to the larger SCS). For example, referring to Figure 16, SBFD subband 2 (or UL subband 2, or DL ​​subband 2 or frequency domain gap 2) is configured, and SBFD subband 1 (or UL subband 1, or DL ​​subband 1 or frequency domain gap 1) is derived based on SBFD subband 2 (or UL subband 2, or DL ​​subband 2 or frequency domain gap 2).

[0280] The center of the last subcarrier (subcarrier 11) of the ending CRB of SBFD subband 2 (or UL subband 2, or DL ​​subband 2, or frequency domain gap 2) is the same as the center of the last subcarrier (subcarrier 11) of the ending CRB of SBFD subband 1 (or UL subband 1, or DL ​​subband 1, or frequency domain gap 1). And / or, the center of the first subcarrier (subcarrier 0) of the starting CRB of SBFD subband 1 (or UL subband 1, or DL ​​subband 1, or frequency domain gap 1) is aligned with the start of the first subcarrier (subcarrier 0) of the starting CRB of SBFD subband 2 (or UL subband 2, or DL ​​subband 2, or frequency domain gap 2). For example, referring to Figure 17, SBFD subband 2 (or UL subband 2, or DL ​​subband 2 or frequency domain gap 2) is configured, and SBFD subband 1 (or UL subband 1, or DL ​​subband 1 or frequency domain gap 1) is derived based on SBFD subband 2 (or UL subband 2, or DL ​​subband 2 or frequency domain gap 2).

[0281] The number of frequency domain CRBs for SBFD subband 1 (or UL subband 1, or DL ​​subband 1, or frequency domain gap 1) is twice the number of frequency domain CRBs for SBFD subband 2 (or UL subband 2, or DL ​​subband 2, or frequency domain gap 2). u2-u1 times, u1 and u2 satisfy: SCS1=15KHz*2 u1 , SCS2=15KHz*2 u2 Both u1 and u2 are integers greater than or equal to 0. Optionally, u2 is greater than u1.

[0282] SBFD subband 2 (or UL subband 2, or DL ​​subband 2 or frequency domain gap 2) contains an integer number of CRBs corresponding to SCS2.

[0283] SBFD subband 1 (or UL subband 1, or DL ​​subband 1 or frequency domain gap 1) contains the CRB corresponding to the integer SCS1.

[0284] Regarding obtaining gap1 through mapping from gap2, the following approach can also be considered: For example, in the above example, a gap2 is configured / determined based on the maximum SCS (i.e., SCS2) and the corresponding CRB. Assuming that gap2 is determined to include n4 CRBs corresponding to SCS2, the base station and UE consider that in carrier bandwidth 1 corresponding to another SCS (i.e., SCS1), gap1 includes n4 CRBs corresponding to SCS1. In this case, although both gap1 and gap2 include n4 CRBs, the frequency domain size corresponding to gap2 is twice that of gap1 because SCS2 is twice that of SCS1.

[0285] In the present application, the UL subband can be configured based on cell-common signaling, and the DL subband can be configured based on UE-level signaling; or vice versa, the UL subband can be configured based on UE-level signaling, and the DL subband can be configured based on cell-common signaling.

[0286] In some cases, the frequency domain range of an SBFD subband (or UL subband, or DL ​​subband, or frequency domain gap) obtained based on the mapping rules may exceed the carrier bandwidth corresponding to the SBFD subband (or UL subband, or DL ​​subband, or frequency domain gap). Figure 20 is a schematic diagram of frequency domain resource mapping for another SBFD subband, provided by an embodiment. For example, in Figure 20, since different SCSs are configured with different carrier bandwidths, the SBFD subband 1 (or UL subband 1, or DL ​​subband 1, or frequency domain gap 1) obtained by mapping based on the configured SBFD subband 2 (or UL subband 2, or DL ​​subband 2, or frequency domain gap 2) exceeds the frequency domain range of carrier bandwidth 1. In this case, the base station and the UE agree that the UE does not expect this configuration; or the configuration of SBFD subband 2 (or UL subband 2, or DL ​​subband 2, or frequency domain gap 2) is not reasonable; or the configuration of SBFD subband 2 (or UL subband 2, or DL ​​subband 2, or frequency domain gap 2) is only valid for SCS2, and SBFD subband 1 (or UL subband 1, or DL ​​subband 1, or frequency domain gap 1) is invalid; or the frequency domain resources of SBFD subband 1 (or UL subband 1, or DL ​​subband 1, or frequency domain gap 1) within carrier bandwidth 1 are valid, and the frequency domain resources outside carrier bandwidth 1 are invalid.

[0287] It should also be noted (applicable to all the above scenarios in this application) that SBFD symbols may not have DL subbands configured, but only UL subbands and frequency gaps. In this case, how should the base station transmit DL reception for the SBFD UE and the SBFD UE perform DL reception in the SBFD symbols? The following methods are provided:

[0288] The base station and the UE agree that if a DL subband is not configured or its frequency domain resources cannot be determined, the UE and the base station agree on the following rules:

[0289] 1) In SBFD symbols, the frequency domain resources used by a UE for DL ​​reception are those within the frequency domain resources of its active DL BWP (including the initial DL BWP), excluding the UL subband and frequency domain gap. To simplify processing, the base station can align the boundaries of different UEs' active DL BWPs. This allows the base station to obtain "continuous" and identical resources for DL ​​reception, as the frequency domains remaining in the active DL BWPs of different UEs, excluding the UL subband and frequency domain gap, are identical. The base station also transmits to different UEs within these same frequency domain resources.

[0290] 2) In SBFD symbols, the frequency domain resources used by the UE for DL ​​reception are those within the carrier bandwidth, excluding the UL subband and frequency gap. This allows the base station to obtain a continuous and identical frequency domain resource. Because the carrier bandwidth is the same for different UEs, the remaining frequency domain resources within the carrier bandwidth, excluding the UL subband and frequency gap, are also the same continuous frequency domain resources. The base station also transmits within these same frequency domain resources for different UEs.

[0291] 3) In SBFD symbols, the frequency domain resources used by the UE for DL ​​reception are: frequency domain resources within the carrier bandwidth, excluding the UL subband and frequency domain gap, and within the frequency domain resources of the UE's activated DL BWP. In other words, within a single frequency domain resource, this frequency domain resource is the intersection of the remaining frequency domain resources within the carrier bandwidth, excluding the UL subband and frequency domain gap, and the frequency domain resources of the UE's activated DL BWP. This allows the base station to obtain a continuous and identical frequency domain resource for DL ​​reception. Different UEs may obtain different frequency domain resources due to the different frequency domain locations of their activated DL BWPs, but they all fall within the same continuous frequency domain resources.

[0292] The rules in the above method can be complied with by the base station and the UE at the same time. The UE performs DL reception according to the rules, and the base station sends corresponding DL reception according to the rules.

[0293] FIG21 is a schematic structural diagram of a resource determination device provided by an embodiment. The device may be configured in a first communication node. As shown in FIG21 , the device includes: a first communication module 210 and a determination module 211 .

[0294] The first communication module 210 is configured to receive resource configuration information, where the resource configuration information includes time domain configuration information and frequency domain configuration information, where the time domain configuration information is used to indicate a time domain resource location of an SBFD subband based on a subband full-duplex (SBFD) period or a time division duplex (TDD) period, and the frequency domain configuration information is used to indicate a frequency domain resource location of an SBFD subband corresponding to at least one subcarrier spacing (SCS) of a carrier;

[0295] The determination module 211 is configured to determine the time-frequency resources of the SBFD subband according to the resource configuration information.

[0296] The resource determination device provided in this embodiment is used to implement the resource determination method of the above embodiment. The implementation principle and technical effects of the resource determination device provided in this embodiment are similar to those of the above embodiment and will not be repeated here.

[0297] In one embodiment, the SBFD subband includes at least one of a downlink DL subband and an uplink UL subband, and a frequency domain gap.

[0298] In one embodiment, the time domain configuration information includes first information and second information, where the first information is used to indicate a configuration mode of an SBFD subband within an SBFD cycle, and the second information is used to indicate a time slot and symbol of the SBFD subband within the SBFD cycle.

[0299] The frequency domain configuration information is used to indicate the common resource block CRB of the SBFD subband corresponding to at least one SCS based on the carrier; the frequency domain resource positions corresponding to different SCSs are described by the CRB associated with their corresponding SCSs.

[0300] In one embodiment, an SBFD period includes at least one TDD frame structure period, and the configuration of the SBFD subband in an SBFD period includes any one of the following:

[0301] SBFD subbands are configured in each TDD frame structure period;

[0302] The SBFD subband is configured in some TDD frame structure periods.

[0303] In one embodiment, the time domain resource position of the SBFD subband includes at least one of the following positions: a starting slot, a starting symbol, an ending slot, and an ending symbol;

[0304] If the starting slot is not specified, the first slot in an SBFD cycle or TDD frame structure cycle is the default starting slot.

[0305] When the starting symbol is missing, the first symbol in the indicated starting slot is the starting symbol by default;

[0306] In the case where the end slot is not specified, the last slot in the remaining slots, excluding the uplink timeslot or flexible timeslot, within an SBFD period or TDD frame structure period is considered the end slot. At least one flexible symbol in the flexible timeslot is not configured as an uplink symbol or is not configured for semi-static uplink transmission. The end slot can be replaced by the number of consecutive slots starting from the start slot.

[0307] When the end symbol is not specified, the last symbol among the remaining symbols other than the uplink symbol or the flexible symbol in an SBFD period or a TDD frame structure period is the end symbol by default; the flexible symbol is not configured as an uplink symbol or is not configured for semi-static uplink transmission.

[0308] In one embodiment, the number of bits in the start slot or the end slot is determined according to at least one of the following:

[0309] The total number of all downlink slots and all special slots in one SBFD period or one TDD frame structure period, where the special slots include at least one of the first slot and the second slot, the first slot includes at least one uplink symbol and at least one downlink symbol, and the second slot includes a flexible symbol, which is not configured as an uplink symbol or is not configured for semi-static uplink transmission;

[0310] The maximum number of slots that can be configured in an SBFD subband within an SBFD period or a TDD frame structure period.

[0311] In one embodiment, the number of bits of the start symbol is determined according to at least one of the following:

[0312] The total number of all downlink symbols and all flexible symbols in a starting slot. Flexible symbols are not configured as uplink symbols or are not used for semi-static uplink transmission.

[0313] The first k1 symbols of the starting slot;

[0314] The last k1 symbols of the starting slot.

[0315] In one embodiment, the number of bits of the end symbol is determined according to at least one of the following:

[0316] The total number of all downlink symbols and all flexible symbols in an end slot. Flexible symbols are not configured as uplink symbols or are not used for semi-static uplink transmission.

[0317] The first k2 symbols that end the slot;

[0318] The last k2 symbols that end the slot.

[0319] In one embodiment, the time domain resource location of the SBFD subband is determined by at least one of the following:

[0320] In an SBFD period or TDD frame structure period, all symbols are regarded as a set, and a start symbol is indicated from the set. The default end symbol is the last symbol of the remaining symbols in the SBFD period or TDD frame structure period except for the UL subband and flexible symbols. All symbols from the start symbol to the end symbol are configured as SBFD subbands; flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and slot format indication SFI;

[0321] When an SBFD period contains at least two TDD frame structure periods, all symbols in the TDD frame structure period in which the SBFD subband is configured are taken as a set, and a start symbol is indicated from the set. The default end symbol is the last symbol of the remaining symbols excluding the UL subband and flexible symbols in the TDD frame structure period in which the SBFD subband is configured. All symbols from the start symbol to the end symbol are configured as SBFD subbands. Flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI.

[0322] In an SBFD period or TDD frame structure period, all slots are regarded as a set, and a starting slot is indicated from the set. The first symbol or predefined symbol in the starting slot is used as the start symbol of the SBFD subband, and the default end symbol is the last symbol of the remaining symbols in the SBFD period or TDD frame structure period except for the UL subband and flexible symbols. All symbols from the start symbol to the end symbol are configured as SBFD subbands; flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI;

[0323] When an SBFD period contains at least two TDD frame structure periods, all slots in the TDD frame structure period in which the SBFD subband is configured are taken as a set, and a starting slot is indicated from the set. The first symbol or predefined symbol in the starting slot is used as the starting symbol of the SBFD subband, and the default end symbol is the last symbol of the remaining symbols except the UL subband and flexible symbols in the TDD frame structure period in which the SBFD subband is configured. All symbols from the start symbol to the end symbol are configured as the SBFD subband; the flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI.

[0324] In one embodiment, if the first SCS is a reference SCS and the first SCS is smaller than the second SCS, the slot and / or symbol of the SBFD subband corresponding to the second SCS is determined based on the slot and / or symbol of the SBFD subband corresponding to the first SCS; the slot and / or symbol of the SBFD subband corresponding to the second SCS overlap and correspond to the slot and / or symbol of the SBFD subband corresponding to the first SCS in the time domain; the slot and / or symbol of the SBFD subband corresponding to the first SCS is configured based on the reference SCS.

[0325] In one embodiment, the determination module 211 is configured to determine the CRB of the SBFD subband of a carrier within the carrier bandwidth corresponding to different SCSs according to the frequency domain configuration information; or to determine the CRB of the SBFD subband of a carrier within the carrier bandwidth corresponding to one SCS according to the frequency domain configuration information; and to determine the CRB of the SBFD subband within the carrier bandwidth corresponding to the remaining SCSs according to the CRB of the SBFD subband within the carrier bandwidth corresponding to one SCS.

[0326] In one embodiment, SBFD subbands within different carrier bandwidths satisfy at least one of the following rules:

[0327] The frequency domain resources of the SBFD subband remain continuous;

[0328] The first subcarrier of the starting CRB of one SBFD subband is aligned with the center of the first subcarrier of the starting CRB of another SBFD subband;

[0329] The last subcarrier of the end CRB of one SBFD subband is aligned with the center of the last subcarrier of the end CRB of another SBFD subband;

[0330] The center of the last subcarrier of the ending CRB of one SBFD subband is aligned with the end of the last subcarrier of the last CRB of another SBFD subband;

[0331] The center of the first subcarrier of the starting CRB of one SBFD subband is aligned with the start of the first subcarrier of the starting CRB of another SBFD subband;

[0332] The number of CRBs in one SBFD subband is twice the number of CRBs in another SBFD subband. u2-u1 times, u1 and u2 are both constants, satisfying the SCS of an SBFD subband of 15KHz*2 u1 , the SCS of the other SBFD sub-band is 15KHz*2 u2 , and u2 is greater than u1;

[0333] An SBFD subband includes an integer number of CRBs corresponding to the SCS.

[0334] FIG22 is a schematic structural diagram of another resource determination device provided by an embodiment. The device may be configured in a second communication node. As shown in FIG22 , the device includes: a second communication module 220 .

[0335] The second communication module 220 is configured to send resource configuration information, where the resource configuration information includes time domain configuration information and frequency domain configuration information. The time domain configuration information is used to indicate the time domain resource position of the SBFD subband based on the subband full-duplex SBFD period or the time division duplex TDD period, and the frequency domain configuration information is used to indicate the frequency domain resource position of the SBFD subband corresponding to at least one subcarrier spacing SCS of the carrier.

[0336] The resource determination device provided in this embodiment is used to implement the resource determination method of the above embodiment. The implementation principle and technical effects of the resource determination device provided in this embodiment are similar to those of the above embodiment and will not be repeated here.

[0337] In one embodiment, the SBFD subband includes at least one of a downlink DL subband and an uplink UL subband, and a frequency domain gap.

[0338] In one embodiment, the time domain configuration information includes first information and second information, where the first information is used to indicate a configuration mode of an SBFD subband within an SBFD cycle, and the second information is used to indicate a time slot and symbol of the SBFD subband within the SBFD cycle.

[0339] The frequency domain configuration information is used to indicate the common resource block CRB of the SBFD subband corresponding to at least one SCS based on the carrier; the frequency domain resource positions corresponding to different SCSs are described by the CRB associated with their corresponding SCSs.

[0340] In one embodiment, an SBFD period includes at least one TDD frame structure period, and the configuration of the SBFD subband in an SBFD period includes any one of the following:

[0341] SBFD subbands are configured in each TDD frame structure period;

[0342] The SBFD subband is configured in some TDD frame structure periods.

[0343] In one embodiment, the time domain resource position of the SBFD subband includes at least one of the following positions: a starting slot, a starting symbol, an ending slot, and an ending symbol;

[0344] If the starting slot is not specified, the first slot in an SBFD cycle or TDD frame structure cycle is the default starting slot.

[0345] When the starting symbol is missing, the first symbol in the indicated starting slot is the starting symbol by default;

[0346] In the case where the end slot is not specified, the last slot in the remaining slots, excluding the uplink timeslot or flexible timeslot, within an SBFD period or TDD frame structure period is considered the end slot. At least one flexible symbol in the flexible timeslot is not configured as an uplink symbol or is not configured for semi-static uplink transmission. The end slot can be replaced by the number of consecutive slots starting from the start slot.

[0347] When the end symbol is not specified, the last symbol among the remaining symbols other than the uplink symbol or the flexible symbol in an SBFD period or a TDD frame structure period is the end symbol by default; the flexible symbol is not configured as an uplink symbol or is not configured for semi-static uplink transmission.

[0348] In one embodiment, the number of bits in the start slot or the end slot is determined according to at least one of the following:

[0349] The total number of all downlink slots and all special slots in one SBFD period or one TDD frame structure period, where the special slots include at least one of the first slot and the second slot, the first slot includes at least one uplink symbol and at least one downlink symbol, and the second slot includes a flexible symbol, which is not configured as an uplink symbol or is not configured for semi-static uplink transmission;

[0350] The maximum number of slots that can be configured in an SBFD subband within an SBFD period or a TDD frame structure period.

[0351] In one embodiment, the number of bits of the start symbol is determined according to at least one of the following:

[0352] The total number of all downlink symbols and all flexible symbols in a starting slot. Flexible symbols are not configured as uplink symbols or are not used for semi-static uplink transmission.

[0353] The first k1 symbols of the starting slot;

[0354] The last k1 symbols of the starting slot.

[0355] In one embodiment, the number of bits of the end symbol is determined according to at least one of the following:

[0356] The total number of all downlink symbols and all flexible symbols in an end slot. Flexible symbols are not configured as uplink symbols or are not used for semi-static uplink transmission.

[0357] The first k2 symbols that end the slot;

[0358] The last k2 symbols that end the slot.

[0359] In one embodiment, the time domain resource location of the SBFD subband is determined by at least one of the following:

[0360] In an SBFD period or TDD frame structure period, all symbols are regarded as a set, and a start symbol is indicated from the set. The default end symbol is the last symbol of the remaining symbols in the SBFD period or TDD frame structure period except for the UL subband and flexible symbols. All symbols from the start symbol to the end symbol are configured as SBFD subbands; flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and slot format indication SFI;

[0361] When an SBFD period contains at least two TDD frame structure periods, all symbols in the TDD frame structure period in which the SBFD subband is configured are taken as a set, and a start symbol is indicated from the set. The default end symbol is the last symbol of the remaining symbols excluding the UL subband and flexible symbols in the TDD frame structure period in which the SBFD subband is configured. All symbols from the start symbol to the end symbol are configured as SBFD subbands. Flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI.

[0362] In an SBFD period or TDD frame structure period, all slots are regarded as a set, and a starting slot is indicated from the set. The first symbol or predefined symbol in the starting slot is used as the start symbol of the SBFD subband, and the default end symbol is the last symbol of the remaining symbols in the SBFD period or TDD frame structure period except for the UL subband and flexible symbols. All symbols from the start symbol to the end symbol are configured as SBFD subbands; flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI;

[0363] When an SBFD period contains at least two TDD frame structure periods, all slots in the TDD frame structure period in which the SBFD subband is configured are taken as a set, and a starting slot is indicated from the set. The first symbol or predefined symbol in the starting slot is used as the starting symbol of the SBFD subband, and the default end symbol is the last symbol of the remaining symbols except the UL subband and flexible symbols in the TDD frame structure period in which the SBFD subband is configured. All symbols from the start symbol to the end symbol are configured as the SBFD subband; the flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI.

[0364] In one embodiment, if the first SCS is a reference SCS and the first SCS is smaller than the second SCS, the slot and / or symbol of the SBFD subband corresponding to the second SCS is determined based on the slot and / or symbol of the SBFD subband corresponding to the first SCS; the slot and / or symbol of the SBFD subband corresponding to the second SCS overlap and correspond to the slot and / or symbol of the SBFD subband corresponding to the first SCS in the time domain; the slot and / or symbol of the SBFD subband corresponding to the first SCS is configured based on the reference SCS.

[0365] An embodiment of the present application further provides a communication node, comprising: a processor configured to implement the method provided in any embodiment of the present application when executing a computer program. Specifically, the communication node may be a first communication node or a second communication node. Exemplarily, the first communication node may be a terminal device provided in any embodiment of the present application, such as a UE; and the second communication node may be an access network device provided in any embodiment of the present application, such as a base station.

[0366] Illustratively, the following embodiments respectively provide structural diagrams in which a communication node is a UE and a base station.

[0367] Figure 23 is a structural diagram of a UE provided by an embodiment. The UE can be implemented in various forms. The UE in this application may include but is not limited to mobile terminal devices such as mobile phones, smart phones, laptops, digital broadcast receivers, personal digital assistants (PDAs), tablet computers (PADs), portable multimedia players (PMPs), navigation devices, vehicle-mounted terminal devices, vehicle-mounted display terminals, vehicle-mounted electronic rearview mirrors, etc., as well as fixed terminal devices such as digital televisions (TVs) and desktop computers.

[0368] As shown in FIG23 , UE 50 may include a wireless communication unit 51, an audio / video (A / V) input unit 52, a user input unit 53, a sensing unit 54, an output unit 55, a memory 56, an interface unit 57, a processor 58, and a power supply unit 59, among others. FIG23 shows a UE including various components, but it should be understood that implementation of all illustrated components is not required. More or fewer components may be implemented instead.

[0369] In this embodiment, the wireless communication unit 51 allows radio communication between the UE 50 and a base station or network. The A / V input unit 52 is configured to receive audio or video signals. The user input unit 53 can generate key input data based on user input commands to control various operations of the UE 50. The sensing unit 54 detects the current state of the UE 50, the location of the UE 50, the presence or absence of user touch input to the UE 50, the orientation of the UE 50, the acceleration or deceleration movement and direction of the UE 50, and generates commands or signals for controlling the operation of the UE 50. The interface unit 57 serves as an interface through which at least one external device can connect to the UE 50. The output unit 55 is configured to provide output signals in a visual, audio, and / or tactile manner. The memory 56 can store software programs, etc., for processing and control operations executed by the processor 58, or can temporarily store data that has been output or is to be output. The memory 56 can include at least one type of storage medium. Furthermore, the UE 50 can cooperate with a network storage device that performs the storage function of the memory 56 via a network connection. The processor 58 generally controls the overall operation of the UE 50. The power supply unit 59 receives external power or internal power under the control of the processor 58 and provides appropriate power required to operate various elements and components.

[0370] The processor 58 executes at least one functional application and data processing by running the program stored in the memory 56, such as implementing the method provided in the embodiment of the present application.

[0371] FIG24 is a schematic diagram of the structure of a base station provided by an embodiment. As shown in FIG24 , the base station includes a processor 60, a memory 61, and a communication interface 62. The base station may contain one or more processors 60, with FIG24 using one processor 60 as an example. The processor 60, memory 61, and communication interface 62 in the base station may be connected via a bus or other means, with FIG24 using a bus as an example. The term "bus" refers to one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus structures.

[0372] The memory 61, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as program instructions / modules corresponding to the methods in the embodiments of the present application. The processor 60 executes the software programs, instructions, and modules stored in the memory 61 to execute at least one functional application and data processing of the base station, thereby implementing the above-mentioned method.

[0373] The memory 61 may include a program storage area and a data storage area. The program storage area may store an operating system and at least one application required for a function; the data storage area may store data generated based on the use of the terminal. Furthermore, the memory 61 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state memory device. In some instances, the memory 61 may include memory remotely located relative to the processor 60, and such remote memory may be connected to a base station via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a network, a mobile communication network, and combinations thereof.

[0374] The communication interface 62 can be configured to receive and send data.

[0375] An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method provided in any embodiment of the present application is implemented.

[0376] The computer storage medium of the embodiment of the present application can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. Computer-readable storage media include (non-exhaustive list): an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it.

[0377] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, the data signal carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0378] The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wire, optical cable, radio frequency (RF), etc., or any suitable combination of the foregoing.

[0379] Computer program code for performing the operations of the present disclosure may be written in one or more programming languages ​​or a combination of multiple programming languages, including object-oriented programming languages ​​(such as Java, Smalltalk, C++, Ruby, Go), and conventional procedural programming languages ​​(such as "C" or similar programming languages). The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0380] It will be appreciated by those skilled in the art that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a vehicle-mounted mobile station.

[0381] In general, various embodiments of the present application may be implemented in hardware or dedicated circuits, software, logic, or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although the present application is not limited thereto.

[0382] Embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example, in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0383] Any block diagram of the logic flow in the drawings of this application may represent program steps, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program steps and logic circuits, modules and functions. The computer program can be stored on a memory. The memory can be of any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as but not limited to read-only memory (ROM), random access memory (RAM), optical memory devices and systems (digital versatile discs DVD or CD), etc. Computer-readable media may include non-transitory storage media. The data processor can be of any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (Field-Programmable Gate Array, FPGA) and a processor based on a multi-core processor architecture.

Claims

1. A resource determination method, applied to a first communication node, comprising: Receive resource configuration information, where the resource configuration information includes time domain configuration information and frequency domain configuration information, where the time domain configuration information is used to indicate a time domain resource position of an SBFD subband based on a subband full-duplex (SBFD) period or a time division duplex (TDD) period, and the frequency domain configuration information is used to indicate a frequency domain resource position of an SBFD subband corresponding to at least one subcarrier spacing (SCS) of a carrier; Determine the time-frequency resources of the SBFD subband according to the resource configuration information.

2. The resource determination method according to claim 1, wherein: The SBFD subband includes at least one of a downlink DL subband and an uplink UL subband, and a frequency domain gap.

3. The resource determination method according to claim 1, wherein: The time domain configuration information includes first information and second information, wherein the first information is used to indicate a configuration mode of an SBFD subband within an SBFD period, and the second information is used to indicate a time slot and a symbol of the SBFD subband within an SBFD period. The frequency domain configuration information is used to indicate the common resource block CRB of the SBFD subband corresponding to at least one SCS based on the carrier; the frequency domain resource positions corresponding to different SCSs are described by the CRB associated with their corresponding SCSs.

4. The resource determination method according to claim 1 or 3, wherein: An SBFD period includes at least one TDD frame structure period. The SBFD subband configuration mode within an SBFD period includes any of the following: The SBFD subband is configured in each TDD frame structure period; The SBFD subband is configured in part of the TDD frame structure period.

5. The resource determination method according to claim 1 or 3, wherein: The time domain resource position of the SBFD subband includes at least one of the following positions: a starting slot, a starting symbol, an ending slot, and an ending symbol; If the starting slot is not specified, the first slot in an SBFD cycle or TDD frame structure cycle is the default starting slot. When the starting symbol is missing, the first symbol in the indicated starting slot is the starting symbol by default; In the case where the end slot is defaulted, the last slot in the remaining slots except the uplink time slot or flexible time slot in an SBFD period or TDD frame structure period is defaulted to be the end slot; at least one flexible symbol in the flexible time slot is not configured as an uplink symbol or is not configured for semi-static uplink transmission; the end slot can be replaced by the number of consecutive slots starting from the start slot; When the end symbol is not provided, the last symbol among the remaining symbols except the uplink symbol or flexible symbol in an SBFD period or TDD frame structure period is the end symbol by default; the flexible symbol is not configured as an uplink symbol or is not configured for semi-static uplink transmission.

6. The resource determination method according to claim 5, wherein: The number of bits in the starting slot or the ending slot is determined according to at least one of the following: The total number of all downlink slots and all special slots in one SBFD period or one TDD frame structure period, where the special slots include at least one of a first slot and a second slot, the first slot includes at least one uplink symbol and at least one downlink symbol, and the second slot includes a flexible symbol, where the flexible symbol is not configured as an uplink symbol or is not configured for semi-static uplink transmission; The maximum number of slots that can be configured in an SBFD subband within an SBFD period or a TDD frame structure period.

7. The resource determination method according to claim 5, wherein: The number of bits of the starting symbol is determined according to at least one of the following: The total number of all downlink symbols and all flexible symbols in a starting slot, where the flexible symbols are not configured as uplink symbols or are not used for semi-static uplink transmission; The first k1 symbols of the starting slot; The last k1 symbols of the starting slot.

8. The resource determination method according to claim 5, wherein: The number of bits of the end symbol is determined according to at least one of the following: The total number of all downlink symbols and all flexible symbols in an ending slot, where the flexible symbols are not configured as uplink symbols or are not used for semi-static uplink transmission; The first k2 symbols that end the slot; The last k2 symbols that end the slot.

9. The resource determination method according to claim 1 or 3, wherein: The time domain resource location of the SBFD subband is determined by at least one of the following: In an SBFD period or TDD frame structure period, all symbols are regarded as a set, and a start symbol is indicated from the set. The default end symbol is the last symbol of the remaining symbols except the UL subband and flexible symbols in the SBFD period or TDD frame structure period. All symbols from the start symbol to the end symbol are configured as SBFD subbands; the flexible symbols are not configured as UL symbols by the time division duplex uplink and downlink dedicated configuration TDD-UL-DL-ConfigDedicated and the slot format indication SFI; When an SBFD period includes at least two TDD frame structure periods, all symbols in the TDD frame structure period in which the SBFD subband is configured are taken as a set, and a start symbol is indicated from the set. The default end symbol is the last symbol of the remaining symbols excluding the UL subband and flexible symbols in the TDD frame structure period in which the SBFD subband is configured. All symbols from the start symbol to the end symbol are configured as SBFD subbands; the flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI. In an SBFD period or TDD frame structure period, all slots are regarded as a set, and a starting slot is indicated from the set. The first symbol or predefined symbol in the starting slot is used as the starting symbol of the SBFD subband, and the default end symbol is the last symbol of the remaining symbols in the SBFD period or TDD frame structure period except for the UL subband and flexible symbols. All symbols from the start symbol to the end symbol are configured as SBFD subbands; the flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI; When an SBFD period contains at least two TDD frame structure periods, all slots in the TDD frame structure period in which the SBFD subband is configured are taken as a set, and a starting slot is indicated from the set. The first symbol or predefined symbol in the starting slot is used as the starting symbol of the SBFD subband, and the default end symbol is the last symbol of the remaining symbols except the UL subband and flexible symbols in the TDD frame structure period in which the SBFD subband is configured. All symbols from the start symbol to the end symbol are configured as SBFD subbands; the flexible symbols are not configured as UL symbols by TDD-UL-DL-ConfigDedicated and SFI.

10. The resource determination method according to claim 1 or 3, wherein: In response to the first SCS being a reference SCS and the first SCS being smaller than the second SCS, the slot and / or symbol of the SBFD subband corresponding to the second SCS is determined based on the slot and / or symbol of the SBFD subband corresponding to the first SCS; the slot and / or symbol of the SBFD subband corresponding to the second SCS overlaps and corresponds to the slot and / or symbol of the SBFD subband corresponding to the first SCS in the time domain; The slot and / or symbol of the SBFD subband corresponding to the first SCS is configured based on the reference SCS.

11. The resource determination method according to claim 1 or 3, wherein: The determining, according to the resource configuration information, the time-frequency resources of the SBFD subband includes: Determine, according to the frequency domain configuration information, a CRB of an SBFD subband of a carrier within a carrier bandwidth corresponding to different SCSs; or; Determine, according to the frequency domain configuration information, a CRB of an SBFD subband of a carrier within a carrier bandwidth corresponding to an SCS; According to the CRB of the SBFD subband within the carrier bandwidth corresponding to the one SCS, the CRB of the SBFD subband within the carrier bandwidth corresponding to the remaining SCSs is determined.

12. The resource determination method according to claim 11, wherein: The SBFD subbands within different carrier bandwidths satisfy at least one of the following rules: The frequency domain resources of the SBFD sub-band remain continuous; The first subcarrier of the starting CRB of one of the SBFD subbands is aligned with the center of the first subcarrier of the starting CRB of another of the SBFD subbands; The last subcarrier of the end CRB of one SBFD subband is aligned with the center of the last subcarrier of the end CRB of another SBFD subband; The center of the last subcarrier of the ending CRB of one SBFD subband is aligned with the end of the last subcarrier of the last CRB of another SBFD subband; The center of the first subcarrier of the starting CRB of one of the SBFD subbands is aligned with the start of the first subcarrier of the starting CRB of another of the SBFD subbands; The number of CRBs in one SBFD sub-band is twice the number of CRBs in another SBFD sub-band. u2-u1 times, u1 and u2 are both constants, satisfying the SCS of the SBFD sub-band is 15KHz*2 u1 , the SCS of the other SBFD sub-band is 15KHz*2 u2 , and u2 is greater than u1; The SBFD subband includes an integer number of CRBs corresponding to the SCSs.

13. A resource determination method, applied to a second communication node, the method comprising: Send resource configuration information, where the resource configuration information includes time domain configuration information and frequency domain configuration information. The time domain configuration information is used to indicate the time domain resource position of the SBFD subband based on the subband full-duplex SBFD period or the time division duplex TDD period. The frequency domain configuration information is used to indicate the frequency domain resource position of the SBFD subband corresponding to at least one subcarrier spacing SCS of the carrier.

14. A communication node, comprising: processor; The processor is configured to implement the resource determination method according to any one of claims 1 to 13 when executing a computer program.

15. A computer-readable storage medium storing a computer program, wherein: When the computer program is executed by a processor, the resource determination method according to any one of claims 1 to 13 is implemented.

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