Data transmission method, communication node, and storage medium

Abstract

The present application provides a data transmission method, a communication node, and a storage medium. The method comprises: receiving a frame structure configuration of each sub-band in the frequency domain; and transmitting data on the basis of the frame structure configuration.

Description

Data transmission method, communication node and storage medium TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, for example, to a data transmission method, a communication node and a storage medium. BACKGROUND

[0002] The fifth generation (5G) new radio (NR) system introduces sub-band full duplex (SBFD), considering that the 6G communication system may support duplex by itself, which can be sub-band full duplex (SBFD) or in-band full duplex (IBFD), the frame structure only considers the time domain and is no longer applicable, and a frame structure suitable for both time and frequency dimensions needs to be redesigned. SUMMARY

[0003] The present application provides a data transmission method, a communication node and a storage medium.

[0004] The present application provides a data transmission method, which is applied to a terminal and includes the following steps.

[0005] Receiving a frame structure configuration of each sub-band in a frequency domain; and transmitting data according to the frame structure configuration.

[0006] The present application provides a data transmission method, which is applied to a network node and includes the following steps.

[0007] Configuring and sending a frame structure configuration of each sub-band in a frequency domain; and transmitting data according to the frame structure configuration.

[0008] The present application also provides a communication node, which includes a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the above-mentioned data transmission method when executing the program.

[0009] The present application also provides a computer-readable storage medium, which stores a computer program, and the program is executable on the processor to implement the above-mentioned data transmission method. BRIEF DESCRIPTION OF DRAWINGS

[0010] FIG. 1 is a schematic diagram of an SFI signaling format according to an embodiment;

[0011] FIG. 2 is a flowchart of a data transmission method according to an embodiment;

[0012] FIG. 3 is a schematic diagram of a frame structure according to an embodiment;

[0013] FIG. 4 is a schematic diagram of another frame structure according to an embodiment;

[0014] FIG. 5 is a schematic diagram of another SFI signaling format according to an embodiment;

[0015] FIG. 6 is a flowchart of another data transmission method according to an embodiment;

[0016] FIG. 7 is a schematic diagram of a structure of a data transmission apparatus according to an embodiment;

[0017] FIG. 8 is a schematic diagram of another data transmission apparatus according to an embodiment;

[0018] FIG. 9 is a schematic diagram of a hardware structure of a communication node according to an embodiment. DETAILED DESCRIPTION

[0019] The embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0020] There are three kinds of frame structure configurations in the NR system:

[0021] 1. Semi-static Cell-specific frame structure configuration; 2. Semi-static UE-specific frame structure configuration; 3. Dynamic Group common frame structure configuration.

[0022] The semi-static Cell-specific frame structure configuration is configured by TDD mode uplink and downlink common configuration signaling (tdd-UL-DL-ConfigurationCommmon) signaling, the semi-static UE-specific frame structure configuration is configured by TDD mode uplink and downlink dedicated configuration signaling (tdd-UL-DL-ConfigDedicated) signaling, and the dynamic Group common frame structure configuration is also the Downlink Control Information (DCI) format 2_0, namely the Slot Format Indication (SFI). For the semi-static Cell-specific frame structure, the slot configuration in the NR is configured in the tdd-UL-DL-ConfigurationCommmon signaling, which is cell-specific, that is, the slot configuration received by all UEs camping on the serving cell is the same.

[0023] The semi-static UE-specific frame structure configuration is configured by tdd-UL-DL-ConfigDedicated signaling.

[0024] For the dynamic frame structure configured by group common signaling, SFI is an optional function. If the UE receives both the semi-static frame structure configuration and the dynamic frame structure configuration, the SFI is meaningful only in the flexible symbol "F" slots of the semi-static frame structure configuration, that is, the SFI can only be reconfigured for the F slots. FIG. 1 is a schematic diagram of an SFI signaling format. As can be seen from FIG. 1, the DCI format 2-0 signaling includes N+1 SFI block indexes, SFI_index0 to SFI_indexN. Each SFI block index is used to indicate a group of slot formats. For example, SFI_index0 indicates that the slot format of combination id 3 in Cell1 is 255, and the specific format content can be obtained by querying Table 1. SFI_index1 indicates that the slot format of combination id 0 in Cell2 is 7, 2, and 1, and multiple slot formats can be configured in a cycle. The specific format content can be obtained by querying Table 1.

[0025] Table 1 Relationship table of slot format and symbol configuration in a slot

[0026] FIG. 2 is a flowchart of a data transmission method provided by an embodiment. The method can be applied to a terminal, which can be understood as a user side node and can specifically refer to a user equipment (UE), such as a mobile terminal or a vehicle terminal. As shown in FIG. 2, the method provided by the embodiment includes 110 and 120.

[0027] In 110, a frame structure configuration of each subband in a frequency domain is received.

[0028] In 120, data is transmitted according to the frame structure configuration.

[0029] In the embodiments of the present application, transmission can include at least one of sending and receiving, for example, for a terminal, transmission can include uplink sending and downlink receiving, and for a network device, transmission can include downlink sending and uplink receiving. Frame structure configuration can refer to configuration of symbol types used for transmitting data, such as uplink symbols or downlink symbols, and can also refer to one or more frame parameters such as subcarrier spacing, cyclic prefix length, and waveform type. On the basis of time domain, frame structure configuration for each subband in frequency domain is also considered, and frame structure configurations of different subbands can be different. Frame structure configuration of each subband can be configured by a network node and sent to a terminal. In addition, the network node can further configure frame structure on the basis of configuring subbands. Frame structure configuration on this basis considers both time and frequency dimensions and can be applied to a wider range of application scenarios including duplex.

[0030] In an embodiment, frame structure configuration includes transmitting data using at least one of the following types of symbols: uplink symbols (denoted as U), downlink symbols (denoted as D), flexible symbols (denoted as F), and mixed uplink and downlink symbols (denoted as M).

[0031] In the embodiments, frame structure can include one or more types of symbols. FIG. 3 is a schematic diagram of a frame structure provided by an embodiment. As shown in the frame structure of FIG. 3, four types of symbols can be used to transmit data. Among them, U, D, and F can refer to the definitions in NR, F refers to D or U (D / U), and M can be understood as Mix of DL and UL, or can be denoted as D and U (D&U). Mixed uplink and downlink symbols can be used for duplex communication, and can be transmitted simultaneously on the network side uplink and downlink, and can be used for uplink and downlink transmission of different UEs or the same UE, thereby realizing flexible transmission of data between uplink and downlink.

[0032] For frame structures that are not two-dimensional, for example, frame structures that only consider time domain, the above four types of symbols can also be defined.

[0033] In an embodiment, frame structure configuration can include transmitting data using at least one of the following types of symbols: uplink symbols (denoted as U), downlink symbols (denoted as D), and flexible symbols (denoted as F), wherein the flexible symbols can be further configured to include at least one of D / U and D&U. In addition, such frame structure configuration can also be applied to frame structures that are not two-dimensional.

[0034] In an embodiment, frame structure configuration is indicated by at least one of semi-static signaling and dynamic signaling.

[0035] In this embodiment, the frame structure configuration can be indicated by the network node through semi-static signaling and / or dynamic signaling, such as Common signaling and / or UE-specific signaling, and dynamic signaling such as Slot Format Indication (SFI) signaling.

[0036] For example, for Common signaling, D is the first N slots of the frame period plus the first M symbols in the last D slot, and U is the number of slots and symbols configured from the back. In addition, D and U can overlap, and the overlapping time domain resources are defined as D&U, or the slots and / or symbols in the frame period can be directly configured as at least one of F and M slots and / or symbols through Common signaling.

[0037] For UE-specific signaling, F symbol and M symbol indications can be added. For example, F symbol is indicated by "nrofFlexibleSymbols INTEGER", and M symbol is indicated by "nrofDownlinkandUplinkSymbols INTEGER". Table 2 shows an example of a specific signaling configuration.

[0038] Table 2: A specific signaling configuration

[0039] For SFI signaling, more rows can be introduced in the normal cyclic prefix (Normal Cyclic Prefix) slot format table to represent different symbol configuration combinations, and D, U, F, and M symbols can be combined in any way.

[0040] In an embodiment, in the case of transmitting data using multiple symbol types in one slot, the frame structure configuration includes at least one of the following:

[0041] The uplink-downlink hybrid symbol is located after the downlink symbol; the uplink-downlink hybrid symbol is located before the uplink symbol; the uplink-downlink hybrid symbol is located before the downlink symbol; the uplink-downlink hybrid symbol is located after the uplink symbol.

[0042] Table 3 shows some possible slot format symbol configurations. As shown in Table 3, M represents a hybrid symbol. In the case where all four symbol types exist, the following restrictions can exist: D is before M; U is after M; U is before M, and D is after M. It can also be understood that M cannot be before both D and U, nor can it be after both D and U. Where N is an integer value.

[0043] Table 3: Some possible slot format symbol configurations

[0044] Regardless of the type of symbols used to transmit data, different frame structures can be configured for different subbands. FIG. 4 provides a schematic diagram of another frame structure according to an embodiment. As shown in the frame structure of FIG. 4, subband 1 can use three types of symbols (D, F, and U) to transmit data; subband 2 and subband 3 can use four types of symbols (D, F, M, and U) to transmit data. It can be seen that subband 3 uses a larger subcarrier spacing than subband 1 and subband 2, for example, subband 1 and subband 2 are 30 kHz subcarrier spacing, and subband 3 uses 60 kHz subcarrier spacing.

[0045] In an embodiment, the frame structure configuration includes at least one of the following frame parameters: subcarrier spacing, cyclic prefix length, waveform type.

[0046] In an embodiment, each subband includes one or more resource blocks; the plurality of resource blocks are contiguous resource blocks or non-contiguous resource blocks.

[0047] In an embodiment, one subband corresponds to one bandwidth part (BWP), or one BWP includes multiple subbands. In this embodiment, the BWP and the subband can have a one-to-one correspondence or a one-to-many correspondence.

[0048] In an embodiment, if no frame structure is configured for any subband, the subband uses full flexible symbols to transmit data by default, i.e., the default mode of the subband is full F frame structure.

[0049] In an embodiment, the period of the subband frame structure can be configured individually, or all frequency domain subbands are set to a uniform period. For example, three subbands are configured, subband 1 is configured with a period of 10 ms, 30 kHz subcarrier spacing, corresponding to 20 time slots; subband 2 is configured with a period of 20 ms, 60 kHz subcarrier spacing, corresponding to 80 time slots; and subband 3 is configured with a period of 10 ms, 60 kHz subcarrier spacing, corresponding to 40 time slots. In an embodiment, multiple periods can also be configured for each subband.

[0050] In an embodiment, the frame structure configuration of each subband on the frequency domain is received, including at least one of the following:

[0051] The frame structure configuration of each subband in the plurality of subbands is received; the frame structure configuration of one subband in the plurality of subbands is received, and the differential information of the frame structure configuration of each subband other than the subband relative to the frame structure configuration of the subband is received.

[0052] In this embodiment, if the network node configures a frame structure of multiple subbands, one way is to configure and indicate each subband independently, and another way is to configure one subband and further indicate whether the remaining subbands have changes relative to the subband, and if there are changes, further indicate some differential information to the terminal. Correspondingly, the terminal can independently receive and determine the frame structure configuration of each subband when receiving the frame structure configuration, or can first receive the configuration of one subband and receive the differential information of the remaining subbands relative to the subband to determine the changes of the remaining subbands relative to the subband.

[0053] In an embodiment, the terminal receives the frame structure configuration of each subband in the frequency domain, including receiving the frame structure configuration of multiple subbands according to the bundling relationship of at least one of the carrier and the subband.

[0054] In this embodiment, the network node configures the frame structure for each subband under one carrier, which will increase the signaling overhead to some extent. The bundling relationship of at least one of the carrier and the subband can be introduced and indicated uniformly or in groups, thereby reducing the signaling overhead. For example, a carrier group (CC Group) and / or a subband group are introduced, that is, the frame structure configuration and indication can be uniformly performed for one carrier group and / or one subband group. The terminal can uniformly receive and determine the frame structure configuration according to the carrier group and / or the subband group when receiving the frame structure configuration.

[0055] In an embodiment, the time-frequency two-dimensional frame structure can be reverted to a time-domain frame structure, for example, only one subband is configured in the frequency domain.

[0056] In an embodiment, multiple sets of frame parameters can be configured on each subband, for example, two types of waveforms are configured, such as a cyclic prefix-orthogonal frequency division multiplexing (Cyclic Prefix-Orthogonal Frequency Division Multiplexing) waveform and a discrete Fourier transform-based orthogonal frequency division multiplexing DFT-s-OFDM waveform, or other 6G newly introduced waveforms, such as an orthogonal time-frequency space waveform OTFS (Orthogonal Time Frequency Space, OTFS), etc., which are not limited in this application.

[0057] In an embodiment, for a subband configured with multiple sets of waveforms, the method further includes at least one of the following:

[0058] Receiving a waveform switch within the subband indicated semi-statically by a radio resource control (Radio Resource Control, RRC) message; receiving a dynamically indicated waveform switch within the subband.

[0059] In an embodiment, the waveform switching within the dynamically indicated subband includes at least one of the following:

[0060] receiving a downlink control information (DCI), each bit in a dynamic waveform switching indication field of the DCI respectively indicates whether waveform switching is performed for a corresponding subband; and receiving a table configured by RRC, each column in a row of the table respectively indicates a waveform of a corresponding subband.

[0061] In the embodiment, for the waveform switching within the dynamically indicated subband, the network node can indicate to the terminal by 1 bit in the dynamic waveform switching indication field of the DCI for each subband whether waveform switching is performed for the subband. For example, there are three subbands, and the high-layer parameter configures two waveforms for each subband, which can be uplink or downlink. The dynamic waveform switching indication field of the DCI has 3 bits, each bit corresponds to a subband, and respectively indicates the waveform switching of the three subbands. A bit value of 0 indicates one waveform, and a bit value of 1 indicates another waveform. If more than two waveforms are configured, for example, n waveforms, each subband needs bits to indicate waveform switching. If the high-layer parameter configures four subbands, and two of the subbands support two waveforms, the dynamic waveform switching indication field of the DCI can also have 2 bits, which respectively indicate the waveform switching of the two subbands supporting two waveforms. In addition, the high-layer parameter can configure an enabling identifier for a certain DCI format, such as {subband 1 enabled, subband 2 disabled, subband 3 enabled}, so that the dynamic waveform switching indication field of the DCI format can have 2 bits to respectively indicate subband 1 and subband 2. Multiple DCI format enabling identifiers can also be configured, such as {subband 1 enabled for format 1, subband 2 disabled for format 1, subband 3 enabled for format 1, subband 1 disabled for format 2, subband 2 disabled for format 2, subband 3 enabled for format 2}, so that the dynamic waveform switching indication field of the DCI format 2 can have 1 bit to indicate the waveform switching of subband 3.

[0062] Another way is that the network node indicates the waveform configuration within the subband to the terminal by the RRC configured table, where each column in a row of the table respectively indicates a waveform of a corresponding subband, and further indicates the waveform switching within each subband dynamically by the DCI. As shown in Table 4, the RRC message configures subband 1 to include two waveform configurations of waveform 1 and waveform 2, and subband 2 to include two waveform configurations of waveform 1 and waveform 3. Of course, more waveforms can also be configured. The DCI dynamic waveform switching indication field indicates that 1 means that the subband 1 is switched from one of the waveforms 1 and 2 to the other, and at the same time, the subband 2 is switched from one of the waveforms 1 and 3 to the other. If more waveforms are configured for the subband, more bits are needed to indicate waveform switching.

[0063] Table 4 Waveform configuration of different subbands

[0064] In an embodiment, the method further comprises:

[0065] receiving a first higher layer parameter, enabling or disabling reporting of power headroom information for each waveform of each subband according to the first higher layer parameter; in the case of enabling, reporting power headroom information PHR for each waveform of each subband.

[0066] In this embodiment, the terminal can report power headroom information (PHR) for each waveform of each subband separately, in addition, the network node can enable or disable reporting of power headroom information for each waveform of each subband by sending a first higher layer parameter, or can fall back to reporting power headroom information for each waveform separately, i.e. different subbands do not need to be reported separately.

[0067] In an embodiment, the frame structure configuration of each subband in the frequency domain is received, including at least one of the following:

[0068] receiving time-division duplex (TDD) mode uplink and downlink common configuration signaling, the TDD mode uplink and downlink common configuration signaling being used to configure the frame structure of each subband at the cell level; receiving TDD mode uplink and downlink dedicated configuration signaling, the TDD mode uplink and downlink dedicated configuration signaling being used to configure the frame structure of each subband at the terminal level; receiving a slot format indication (SFI) message, the SFI message being used to configure the frame structure of each subband.

[0069] In this embodiment, for cell-specific signaling, the network node can configure TDD mode uplink and downlink common configuration signaling (tdd-UL-DL-ConfigurationCommon) for each subband separately, and tdd-UL-DL-ConfigurationCommon includes a period, etc., and the terminal receives the corresponding signaling of each subband to determine the frame structure.

[0070] For UE-specific signaling, TDD mode uplink and downlink dedicated configuration signaling (tdd-UL-DL-ConfigDedicated) can be configured for each subband separately, or a list of time slots or subbands can be configured, and each time slot or subband list configuration includes at least one of the following parameters: slot index (slotIndex), subband index (subbandIndex). The terminal receives the corresponding signaling of each subband to determine the frame structure. Table 5 is an example of a dedicated signaling configuration.

[0071] Table 5 An example of a dedicated signaling configuration

[0072] In an embodiment, one slot and one subband use uplink symbols, downlink symbols and flexible symbols to transmit data, or use uplink symbols, downlink symbols, flexible symbols and uplink-downlink mixed symbols to transmit data; the method further comprises: receiving a second high-layer parameter, and determining a subband index according to the second high-layer parameter.

[0073] In this embodiment, for a group of symbol configurations of one subband in one slot, three types of symbols (D, F, U) or four types of symbols (D, F, M, U combination) can be used. A subband index (subbandIndex) can be introduced to indicate subband information, and the network node can configure the subband index through a second high-layer parameter and send it to the terminal.

[0074] In an embodiment, the SFI message is received, including at least one of the following:

[0075] The frame structure configuration is determined according to the form of the linked list; the corresponding multiple frequency domain units for each combination identifier are determined according to the RRC message; each combination identifier corresponds to different subbands respectively according to the RRC message; each subband and each symbol corresponding to each subband are determined according to the two-dimensional matrix; and different subbands corresponding to each SFI block under one carrier are determined respectively.

[0076] In this embodiment, for the SFI message, one way is to indicate the frame structure configuration in the form of a linked list. Table 6 shows the correspondence between part of the combination identifier and the subband. As shown in Table 6, each combination identifier (Combination ID) can indicate the frame structure configuration of multiple frequency domain units (such as subbands) at the same time, and the network node can configure and send it to the terminal through the RRC message. For example, the RRC message configures the relationship between the combination identifier and the subband, and each SFI block index in the DCI format 2-0 signaling is used to indicate a group of slot formats, for example, SFI_index0 indicates that the slot format of subband 1 with combination identifier (combination id) 1 is 255 in cell 1 (Cell1), and the time domain format of subband 2 is 4, 11 and 7. The specific slot format content can be obtained by querying the table 1 and / or table 3 shown in the table, or the slot format index (SF index) in table 7 can be used to query the newly defined slot format table of 6G system.

[0077] Table 6 Correspondence between part of the combination identifier and the subband

[0078] Table 7 Correspondence between part of the combination identifier and the subband

[0079] For SFI message, one way is that each combination ID corresponds to different subband respectively, which can be configured and sent to terminal through RRC message. For example, Combination ID0 corresponds to the first subband, Combination ID1 corresponds to the second subband, and so on. Table 8 defines the correspondence between Combination ID and subband in one RRC message.

[0080] Table 8 Correspondence between Combination ID and subband

[0081] For SFI message, one way is to configure a two-dimensional matrix for each subband and each symbol; for matrix frame structure configuration, a time-frequency two-dimensional bitmap can also be used, for example, the size of time domain bitmap is determined according to the number of slots contained in the frame period, and the frequency domain is divided into a corresponding number of subbands. If the time domain bitmap is configured as: 0001110000, and the frequency domain bitmap is configured as: 010, it means that the second subband of slots 3, 4 and 5 is full duplex resource.

[0082] For SFI message, one way is that multiple SFI blocks under one carrier respectively represent different subbands, corresponding to different SFI_Index. The network node can define the correspondence between each SFI block and subband through RRC parameter configuration. Figure 5 is a schematic diagram of another SFI signaling format provided by an embodiment, as shown in Figure 5, N+1 SFI block indexes, SFI_index0 to SFI_indexN, are included in the DCI format 2-0 signaling, each SFI block index is used to indicate a group of slot formats, for example, SFI_index0 indicates that the slot format of the combination ID of subband 1 in Cell1 is 4, and the specific format content can be obtained by querying Table 1 and / or Table 3, of course, it can also be obtained by querying the new slot format table defined by 6G system. SFI_index1 indicates that the slot format of the combination ID of subband 2 in Cell1 is 7, 2, 1, and the specific format content can be obtained by querying Table 1 and / or Table 3, of course, it can also be obtained by querying the new slot format table defined by 6G system, in addition, multiple slot formats can be configured in a cycle.

[0083] FIG. 6 is a flowchart of another data transmission method provided by an embodiment, which can be applied to a network node, and the network device can be an access network device, a core network device, or a server, etc., and the access network device can be a base station in a ground communication network, such as an evolved base station eNB, a next generation node gNB in an NR system, etc. The present application is not limited thereto. Technical details not described in detail in the present embodiment can be referred to the above-mentioned any embodiment. As shown in FIG. 6, the method provided by the present embodiment includes 210 and 220.

[0084] In 210, a frame structure configuration of each subband in the frequency domain is configured and transmitted.

[0085] In 220, data is transmitted according to the frame structure configuration.

[0086] In the present embodiment, the frame structure configuration can refer to the configuration of the symbol type used for transmitting data, such as uplink symbol or downlink symbol, etc., and can also refer to frame parameters such as subcarrier spacing, cyclic prefix length, and / or waveform type, etc. On the basis of time domain, the frame structure configuration for each subband (Subband) in the frequency domain is also considered, and the frame structure configurations of different subbands can be different. The network node can configure the frame structure configuration of each subband, and can further configure the frame structure on the basis of the configured subband. On this basis, the frame structure configuration considers both time and frequency dimensions, and can be applied to a wider range of application scenarios including duplex.

[0087] In an embodiment, the frame structure configuration includes:

[0088] Data is transmitted using at least one of the following types of symbols:

[0089] Uplink symbol, downlink symbol, flexible symbol, uplink-downlink mixed symbol.

[0090] In an embodiment, the frame structure configuration is indicated by at least one of semi-static signaling and dynamic signaling.

[0091] In an embodiment, in the case of using multiple symbol types to transmit data in one time slot, the frame structure configuration includes at least one of the following:

[0092] The uplink-downlink mixed symbol is located after the downlink symbol; the uplink-downlink mixed symbol is located before the uplink symbol; the uplink-downlink mixed symbol is located before the downlink symbol; the uplink-downlink mixed symbol is located after the uplink symbol.

[0093] In an embodiment, the frame structure configuration includes at least one of the following frame parameters: subcarrier spacing, cyclic prefix length, waveform type.

[0094] In an embodiment, in case that any one of the subbands is not configured with frame structure, the subband defaults to transmit data with full flexible symbols.

[0095] In an embodiment, the frame structure configuration of each subband in frequency domain is transmitted, including at least one of:

[0096] The frame structure configuration of each subband in the plurality of subbands is transmitted; the frame structure configuration of one subband in the plurality of subbands is transmitted, and the differential information of the frame structure configuration of each subband other than the subband relative to the frame structure configuration of the subband is transmitted.

[0097] In an embodiment, the frame structure configuration of each subband in frequency domain is transmitted, including:

[0098] The frame structure configuration of the plurality of subbands is transmitted according to the bundling relationship of at least one of the carrier and the subband.

[0099] In an embodiment, for the subband configured with multiple sets of waveforms, further including at least one of:

[0100] The waveform switching within the subband is semi-statically indicated by a radio resource control (RRC) message; the waveform switching within the subband is dynamically indicated.

[0101] In an embodiment, the waveform switching within the subband is dynamically indicated, including at least one of:

[0102] Each bit in the dynamic waveform switching indication field of the downlink control information (DCI) respectively indicates whether the corresponding subband performs waveform switching; a table configured by RRC is transmitted, each column in a row of the table respectively indicates the waveform of the corresponding subband.

[0103] In an embodiment, the method further includes:

[0104] Each waveform of each subband is enabled or disabled to report power headroom information (PHR) by a first high-level parameter; in the case of enabling, the PHR reported for each waveform of each subband is received.

[0105] In an embodiment, the frame structure configuration of each subband in frequency domain is transmitted, including at least one of:

[0106] The TDD mode uplink and downlink common configuration signaling is transmitted, which configures the frame structure of each subband at a cell level; the TDD mode uplink and downlink dedicated configuration signaling is transmitted, which configures the frame structure of each subband at a terminal level; the slot format indication (SFI) message is transmitted, which is used to configure the frame structure of each subband.

[0107] In an embodiment, one time slot and one subband adopt uplink symbol, downlink symbol and flexible symbol to transmit data, or adopt uplink symbol, downlink symbol, flexible symbol and uplink and downlink mixed symbol to transmit data; the method further comprises:

[0108] The subband index is indicated by a second high layer parameter.

[0109] In an embodiment, the SFI message is sent, comprising at least one of the following:

[0110] The frame structure configuration is indicated in the form of a linked list; a plurality of frequency domain units corresponding to each combination identifier are configured by an RRC message; each combination identifier respectively corresponds to different subbands by an RRC message; a two-dimensional matrix corresponding to each subband and each symbol is configured; each SFI block under one carrier respectively corresponds to different subbands.

[0111] Embodiments of the present application also provide a data transmission device. FIG. 7 is a structural schematic diagram of a data transmission device provided by an embodiment. As shown in FIG. 7, the data transmission device comprises:

[0112] The receiving module 310 is configured to receive frame structure configurations of each subband on a frequency domain.

[0113] The transmission module 320 is configured to transmit data according to the frame structure configurations.

[0114] In an embodiment, the frame structure configurations comprise at least one of the following types of symbols for transmitting data: uplink symbol, downlink symbol, flexible symbol, uplink and downlink mixed symbol.

[0115] In an embodiment, the frame structure configurations are indicated by at least one of semi-static signaling and dynamic signaling.

[0116] In an embodiment, in the case of transmitting data by using multiple symbol types in one time slot, the frame structure configurations comprise at least one of the following:

[0117] The uplink and downlink mixed symbol is located after the downlink symbol; the uplink and downlink mixed symbol is located before the uplink symbol; the uplink and downlink mixed symbol is located before the downlink symbol; the uplink and downlink mixed symbol is located after the uplink symbol.

[0118] In an embodiment, the frame structure configurations comprise at least one of the following frame parameters: subcarrier spacing, cyclic prefix length, waveform type.

[0119] In an embodiment, each of the subbands comprises one or more resource blocks; the plurality of resource blocks are continuous resource blocks or non-continuous resource blocks.

[0120] In an embodiment, one subband corresponds to one partial bandwidth BWP, or one BWP contains multiple subbands.

[0121] In an embodiment, in case that frame structure is not configured in any of the subbands, the subband adopts full flexible symbol to transmit data by default.

[0122] In an embodiment, the frame structure configuration of each subband in frequency domain is received, including at least one of:

[0123] The frame structure configuration of each subband in the multiple subbands is received; the frame structure configuration of one subband in the multiple subbands is received, and the differential information of the frame structure configuration of each subband other than the subband relative to the frame structure configuration of the subband is received.

[0124] In an embodiment, the frame structure configuration of each subband in frequency domain is received, including:

[0125] The frame structure configuration of the multiple subbands is received according to the bundling relationship of at least one of carrier and subband.

[0126] In an embodiment, for the subband configured with multiple sets of waveforms, further including at least one of:

[0127] The waveform switching within the subband indicated by the radio resource control (RRC) message is received; the waveform switching within the subband indicated dynamically is received.

[0128] In an embodiment, the waveform switching within the subband indicated dynamically includes at least one of:

[0129] The downlink control information (DCI) is received, each bit in the dynamic waveform switching indication field of the DCI respectively indicates whether the corresponding subband performs waveform switching; the table configured by RRC is received, each column in a row of the table respectively indicates the waveform of the corresponding subband.

[0130] In an embodiment, the apparatus further includes:

[0131] The enabling module is configured to receive a first high-layer parameter, and enable or disable the reporting of the power headroom information (PHR) for each waveform of each subband according to the first high-layer parameter; the reporting module is configured to report the PHR for each waveform of each subband in the case of enabling.

[0132] In an embodiment, the frame structure configuration of each subband in frequency domain is received, including at least one of:

[0133] The data transmission apparatus comprises: a receiving module, configured to receive TDD mode uplink and downlink common configuration signaling, the TDD mode uplink and downlink common configuration signaling being used for configuring a frame structure of each subband at a cell level; receive TDD mode uplink and downlink special configuration signaling, the TDD mode uplink and downlink special configuration signaling being used for configuring the frame structure of each subband at a terminal level; and receive a slot format indication (SFI) message, the SFI message being used for configuring the frame structure of each subband.

[0134] In an embodiment, one time slot and one subband adopt uplink symbols, downlink symbols and flexible symbols to transmit data, or adopt uplink symbols, downlink symbols, flexible symbols and uplink and downlink mixed symbols to transmit data; the apparatus further comprises an index determining module, configured to receive a second high layer parameter and determine a subband index according to the second high layer parameter.

[0135] In an embodiment, the receiving SFI message comprises at least one of the following:

[0136] The frame structure configuration is determined according to a linked list form; a plurality of frequency domain units corresponding to each combination identifier are determined according to an RRC message; each combination identifier respectively corresponds to different subbands according to the RRC message; each subband and each symbol corresponding to each other are determined according to a two-dimensional matrix; and different subbands corresponding to each SFI block under one carrier are respectively determined.

[0137] The data transmission apparatus provided by the embodiment belongs to the same concept as the data transmission method provided by the above-described embodiments, and the technical details not described in the embodiment can be referred to the above-described embodiments, and the embodiment has the same effect as the data transmission method.

[0138] The embodiment of the application further provides a data transmission apparatus. Fig. 8 is a structural schematic diagram of a data transmission apparatus provided by an embodiment. As shown in Fig. 8, the data transmission apparatus comprises:

[0139] The configuration and sending module 410 is configured to configure and send a frame structure configuration of each subband on a frequency domain.

[0140] The transmission module 420 is configured to transmit data according to the frame structure configuration.

[0141] In an embodiment, the frame structure configuration comprises at least one of the following types of symbols: uplink symbols, downlink symbols, flexible symbols and uplink and downlink mixed symbols.

[0142] In an embodiment, the frame structure configuration is indicated by at least one of semi-static signaling and dynamic signaling.

[0143] In an embodiment, in case of transmitting data by using multiple symbol types in one time slot, the frame structure configuration comprises at least one of the following:

[0144] The uplink-downlink hybrid symbol is located after the downlink symbol; the uplink-downlink hybrid symbol is located before the uplink symbol; the uplink-downlink hybrid symbol is located before the downlink symbol; the uplink-downlink hybrid symbol is located after the uplink symbol.

[0145] In an embodiment, the frame structure configuration comprises at least one of the following frame parameters: subcarrier spacing, cyclic prefix length, waveform type.

[0146] In an embodiment, in case that no frame structure is configured in any of the subbands, the subband by default uses full flexible symbol to transmit data.

[0147] In an embodiment, the frame structure configuration of each subband in the frequency domain is transmitted, comprising at least one of the following:

[0148] The frame structure configuration of each subband in the plurality of subbands is transmitted; the frame structure configuration of one subband in the plurality of subbands is transmitted, and the differential information of the frame structure configuration of each subband other than the subband relative to the frame structure configuration of the subband is transmitted.

[0149] In an embodiment, the frame structure configuration of each subband in the frequency domain is transmitted, comprising:

[0150] The frame structure configuration of the plurality of subbands is transmitted according to the bundling relationship of at least one of the carrier and the subband.

[0151] In an embodiment, for the subband configured with multiple waveforms, further comprising at least one of the following:

[0152] The waveform switching in the subband is semi-statically indicated by a radio resource control (RRC) message; the waveform switching in the subband is dynamically indicated.

[0153] In an embodiment, the waveform switching in the subband is dynamically indicated, comprising at least one of the following:

[0154] Each bit in the dynamic waveform switching indication field of the downlink control information (DCI) respectively indicates whether the corresponding subband performs waveform switching; a table configured by RRC is transmitted, each column in a row of the table respectively indicates the waveform of the corresponding subband.

[0155] In an embodiment, the apparatus further comprises:

[0156] The enabling module is configured to enable or disable reporting of power headroom information (PHR) for each waveform of each subband by a first higher layer parameter; and the information receiving module is configured to receive the reported PHR for each waveform of each subband in the case of enabling.

[0157] In an embodiment, the frame structure configuration of each subband in the frequency domain is sent, including at least one of the following:

[0158] The TDD mode uplink and downlink common configuration signaling is sent, which configures the frame structure of each subband at the cell level; the TDD mode uplink and downlink dedicated configuration signaling is sent, which configures the frame structure of each subband at the terminal level; and the SFI message is sent, which is used to configure the frame structure of each subband.

[0159] In an embodiment, one time slot and one subband use uplink symbols, downlink symbols and flexible symbols to transmit data, or use uplink symbols, downlink symbols, flexible symbols and uplink and downlink mixed symbols to transmit data; the apparatus further includes an index indicating module configured to indicate a subband index by a second higher layer parameter.

[0160] In an embodiment, the SFI message is sent, including at least one of the following:

[0161] The frame structure configuration is indicated in the form of a linked list; each combination identifier is configured to correspond to multiple frequency domain units by an RRC message; each combination identifier is configured to correspond to different subbands respectively by an RRC message; a two-dimensional matrix is configured to correspond to each subband and each symbol; and each SFI block under one carrier is configured to correspond to different subbands respectively.

[0162] The data transmission apparatus proposed in the embodiment belongs to the same concept as the data transmission method proposed in the above-described embodiments, and the technical details not described in detail in the embodiment can be referred to the above-described embodiments, and the embodiment has the same effect as performing the data transmission method.

[0163] The embodiment of the present application further provides a communication node, which can be a terminal or a network node. FIG. 9 is a schematic diagram of a hardware structure of a communication node according to an embodiment, as shown in FIG. 9, the communication node provided by the present application includes a processor 510 and a memory 520; the processor 510 in the communication node can be one or more, and one processor 510 is taken as an example in FIG. 9; the memory 520 is configured to store one or more programs; the one or more programs are executed by the one or more processors 510, so that the one or more processors 510 implement the data transmission method as described in the embodiments of the present application.

[0164] The communication node further comprises a communication device 530, an input device 540 and an output device 550.

[0165] The processor 510, the memory 520, the communication device 530, the input device 540 and the output device 550 in the communication node can be connected through a bus or other means, and in FIG. 9, the connection through the bus is taken as an example.

[0166] The input device 540 can be used to receive inputted digital or character information, and to generate key signal input related to user settings and function control of the communication node. The output device 550 can include a display device such as a display screen.

[0167] The communication device 530 can include a receiver and a transmitter. The communication device 530 is configured to perform information receiving and transmitting communication according to the control of the processor 510.

[0168] The memory 520, as a kind of computer readable storage medium, can be configured to store software programs, computer executable programs and modules, such as program instructions / modules (for example, the configuration receiving module 310 and the transmission module 320 in the data transmission device) corresponding to the data transmission method described in the embodiments of the present application. The memory 520 can include a program storage area and a data storage area, wherein the program storage area can store an operating system and application programs required by at least one function; the data storage area can store data created according to the use of the communication node, etc. In addition, the memory 520 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state memory device. In some examples, the memory 520 can further include a memory remotely arranged with respect to the processor 510, and these remote memories can be connected to the communication node through a network. Examples of the above network include the Internet, an intranet, a local area network, a mobile communication network and a combination thereof.

[0169] The embodiments of the present application further provide a storage medium, which stores a computer program. The computer program is executed by a processor to implement the data transmission method described in any of the embodiments of the present application. The method includes: receiving frame structure configuration of each subband in a frequency domain; and transmitting data according to the frame structure configuration. Alternatively, the method includes: configuring and sending frame structure configuration of each subband in a frequency domain; and transmitting data according to the frame structure configuration.

[0170] The embodiment of the present application further provides a computer program product, comprising computer programs / instructions, which, when executed by a processor, implement the data transmission method in any of the embodiments of the present application. The method comprises: receiving frame structure configuration of each subband in a frequency domain; and transmitting data according to the frame structure configuration. Alternatively, the method comprises: configuring and sending frame structure configuration of each subband in a frequency domain; and transmitting data according to the frame structure configuration.

[0171] 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 may, for example, be: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination thereof. More specific examples (non-exhaustive list) of the computer readable storage medium include: an electrical connection having one or more wires, a portable computer diskette, 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 CD-ROM, an optical storage device, a magnetic storage device, or any suitable combination thereof. The computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in connection with an instruction execution system, apparatus or device.

[0172] The computer readable signal medium can include a data signal propagated in a baseband or as a part of a carrier wave, in which a computer readable program code is borne. Such a propagated data signal can take on many forms, including but not limited to electro-magnetic, optical, or any suitable combination thereof. The computer readable signal medium can also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

[0173] The program code contained on the computer readable medium can be transmitted in any suitable medium, including but not limited to wireless, wired, optical fiber cable, radio frequency (RF), or any suitable combination thereof.

[0174] Computer program code for carrying out operations of the present application can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer can 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 the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0175] The embodiments of the present application further provide a computer program product, comprising computer programs / instructions, which, when executed by a processor, implement the data transmission method according to any of the above embodiments.

[0176] The above merely provides exemplary embodiments of the present application but should not be used to limit the protective scope of the present application.

[0177] Those skilled in the art will appreciate that the term user terminal encompasses any appropriate type of wireless user equipment, such as a mobile phone, a portable data processing portable network browser or a vehicle mounted mobile station.

[0178] Generally, the various embodiments of the present application can be implemented in hardware or special purpose circuits, software, logic or any combination thereof. For example, some aspects can be implemented in hardware, while other aspects can be implemented in

[0179] Embodiments of the present application can be implemented by a data processor of a mobile device executing computer program instructions, for example in a processor entity, or by hardware, or by a combination of software and hardware. Computer program instructions can be in assemblies, Instruction Set Architecture (ISA), machine, machine-related, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0180] The block diagrams of any logical flow of the present application in the drawings can represent program operations, or can represent interconnecting logical circuits, modules and functions, or can represent a combination of program operations and logical circuits, modules and functions. The computer program can be stored on a memory. The memory can be of any type suitable to the local technical environment and can be realized using any suitable data storage technology, such as a semiconductor-based memory device, e.g. read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash memory, or a magnetic data storage device, such as a diskette or hard-disk drive (HDD). The computer readable medium can include non-transitory storage media. The data processor can be of any type suitable to the local technical environment, and can include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs), application specific integrated circuits (ASIC), field- programmable gate arrays (FPGA) and processors based on multi-core processor architectures, as such are known in the art.

Claims

1. A method for data transmission, applied to a terminal, comprising: receiving a frame structure configuration of each sub-band in a frequency domain; and transmitting data according to the frame structure configuration. The frame structure configuration comprises: transmitting data by using at least one of the following types of symbols:

2. The method of claim 1, wherein, uplink symbol, downlink symbol, flexible symbol, and mixed uplink and downlink symbol. The frame structure configuration is indicated by at least one of semi-static signaling and dynamic signaling. In a case where data is transmitted by using multiple types of symbols in one time slot, the frame structure configuration comprises at least one of the following:

3. The method of claim 2, wherein, the mixed uplink and downlink symbol is located after the downlink symbol; 4. The method of claim 2, wherein, the mixed uplink and downlink symbol is located before the uplink symbol; the mixed uplink and downlink symbol is located before the downlink symbol; the mixed uplink and downlink symbol is located after the uplink symbol. The frame structure configuration comprises at least one of the following frame parameters: sub-carrier spacing, cyclic prefix length, and waveform type. Each sub-band comprises at least one resource block.

5. The method of claim 1, wherein, The multiple resource blocks are continuous resource blocks or non-continuous resource blocks.

6. The method of claim 1, wherein, One sub-band corresponds to one bandwidth part (BWP), or one BWP comprises multiple sub-bands. In a case where one sub-band is not configured with a frame structure, the one sub-band transmits data by using full flexible symbols by default.

7. The method of claim 1, wherein, The receiving of the frame structure configuration of each sub-band in the frequency domain comprises at least one of the following:

8. The method of claim 1, wherein, receiving the frame structure configuration of each sub-band in multiple sub-bands; 9. The method of claim 1, wherein, receiving the frame structure configuration of one sub-band in multiple sub-bands, and receiving difference information of the frame structure configuration of each sub-band other than the one sub-band relative to the frame structure configuration of the one sub-band. The receiving of the frame structure configuration of each sub-band in the frequency domain comprises: receiving the frame structure configuration of multiple sub-bands according to a bundling relationship of at least one of a carrier and a sub-band.

10. The method of claim 1, wherein, For a sub-band configured with multiple waveforms, the method further comprises at least one of the following: receiving a waveform switching within the sub-band indicated by radio resource control (RRC) signaling semi-statically; 11. The method of claim 1, wherein, receiving a waveform switching within the sub-band indicated dynamically. The receiving of the waveform switching within the sub-band indicated dynamically comprises at least one of the following: receiving downlink control information (DCI), wherein each bit in a dynamic waveform switching indication field of the DCI indicates whether waveform switching is performed in a corresponding sub-band; 12. The method of claim 10, wherein, receiving a table configured by RRC, wherein each column in a row of the table indicates a waveform of a corresponding sub-band. 13.The method of claim 1, further comprising: receiving a first higher layer parameter, and enabling or disabling reporting of power headroom information (PHR) for each waveform of each sub-band according to the first higher layer parameter; and in a case of enabling, reporting PHR for each waveform of each sub-band. The receiving of the frame structure configuration of each sub-band in the frequency domain comprises at least one of the following: receiving time division duplex (TDD) mode uplink and downlink common configuration signaling for configuring a frame structure of each sub-band at a cell level; receiving TDD mode uplink and downlink dedicated configuration signaling for configuring a frame structure of each sub-band at a terminal level. ​ 14. The method of claim 1, wherein, ​ ​ ​ receiving a slot format indication SFI message, the SFI message being used to configure a frame structure of each subband.

15. The method of claim 1, wherein, one slot and one subband adopt uplink symbol, downlink symbol and flexible symbol to transmit data, or adopt uplink symbol, downlink symbol, flexible symbol and uplink-downlink mixed symbol to transmit data. The method further comprises: receiving a second high layer parameter, and determining a subband index according to the second high layer parameter.

16. The method of claim 14, wherein, The SFI message is received, and comprises at least one of: determining the frame structure configuration according to a linked list form; determining that a plurality of frequency domain units correspond to each combination identifier according to an RRC message; determining that different subbands correspond to each combination identifier respectively according to an RRC message; determining that each subband and each symbol correspond according to a two-dimensional matrix; determining that different subbands correspond respectively according to each SFI block under one carrier.

17. A data transmission method applied to a network node, comprising: configuring and sending a frame structure configuration of each subband on a frequency domain; transmitting data according to the frame structure configuration.

18. The method of claim 17, wherein, The frame structure configuration comprises: adopting at least one type of symbol to transmit data: uplink symbol, downlink symbol, flexible symbol, uplink-downlink mixed symbol.

19. The method of claim 18, wherein, The frame structure configuration is indicated by at least one of semi-static signaling and dynamic signaling.

20. The method of claim 18, wherein, In the case of adopting multiple symbol types to transmit data in one slot, the frame structure configuration comprises at least one of: The uplink-downlink mixed symbol is located after the downlink symbol; The uplink-downlink mixed symbol is located before the uplink symbol; The uplink-downlink mixed symbol is located before the downlink symbol; The uplink-downlink mixed symbol is located after the uplink symbol.

21. The method of claim 17, wherein, The frame structure configuration comprises at least one frame parameter: subcarrier spacing, cyclic prefix length, waveform type.

22. The method of claim 17, wherein, In the case that one subband is not configured with a frame structure, the one subband adopts full flexible symbol to transmit data by default.

23. The method of claim 17, wherein, The sending of the frame structure configuration of each subband on the frequency domain comprises at least one of: sending the frame structure configuration of each subband in a plurality of subbands; sending the frame structure configuration of one subband in a plurality of subbands, and sending difference information of the frame structure configuration of each subband except the one subband relative to the frame structure configuration of the one subband.

24. The method of claim 17, wherein, The sending of the frame structure configuration of each subband on the frequency domain comprises: sending the frame structure configuration of a plurality of subbands according to a bundling relationship of at least one of carriers and subbands.

25. The method of claim 17, wherein, For the subband configured with multiple waveforms, further comprising at least one of: semi-statically indicating waveform switching within a subband through a radio resource control RRC message; dynamically indicating waveform switching within a subband.

26. The method of claim 25, wherein, The dynamic indication of waveform switching within a subband comprises at least one of: each bit in a dynamic waveform switching indication field of a downlink control information DCI respectively indicates whether waveform switching is performed for a corresponding subband; sending an RRC configured table, each column in a row of the table respectively indicates a waveform of a corresponding subband.

27. The method of claim 17, further comprising: enabling or disabling reporting of power headroom information for each waveform of each subband through a first high layer parameter; In an enabled case, power headroom information PHR reported on each waveform for each subband is received.

28. The method of claim 17, wherein, A frame structure configuration of each subband in a frequency domain is sent, including at least one of the following: A time division duplex TDD mode uplink and downlink common configuration signaling is sent, which configures a frame structure of each subband at a cell level. A TDD mode uplink and downlink special configuration signaling is sent, which configures a frame structure of each subband at a terminal level. A slot format indication SFI message is sent, which is used to configure a frame structure of each subband.

29. The method of claim 17, wherein, One time slot and one subband use uplink symbols, downlink symbols and flexible symbols to transmit data, or use uplink symbols, downlink symbols, flexible symbols and uplink and downlink mixed symbols to transmit data. The method further includes: A subband index is indicated by a second high layer parameter.

30. The method of claim 28, wherein, The SFI message includes at least one of the following: Frame structure configurations are indicated in the form of a linked list. A plurality of frequency domain units corresponding to each combination identifier are configured by an RRC message. Each combination identifier respectively corresponds to different subbands by an RRC message. A two-dimensional matrix corresponding to each subband and each symbol is configured. Each SFI block under one carrier respectively corresponds to different subbands.

31. A communication node, comprising: A memory, and at least one processor; The memory is configured to store at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the data transmission method in any one of claims 1-30.

32. A computer readable storage medium, storing a computer program, which is executed by a processor to implement the data transmission method in any one of claims 1-30.

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