Data transmission method, terminal device, network device and computer storage medium

Abstract

The application discloses a data transmission method, a terminal device, a network device and a computer storage medium, and comprises the following steps: a terminal device determines a transmission waveform used by a first channel; and the terminal device performs data transmission on the first channel according to the transmission waveform.

Description

Technical Field

[0001] This invention relates to the field of information processing technology, and in particular to a data transmission method, terminal equipment, network equipment, and computer storage medium. Background Technology

[0002] Vehicle-to-everything (V2X) systems are based on Long Term Evaluation-Device to Device (LTE-D2D) technology, specifically a sidelink transmission technology (SL). The 3rd Generation Partnership Project (3GPP) Rel-14 standardized V2X technology, defining two transmission modes: Mode 3 and Mode 4. Mode 3, for example... Figure 1 As shown, the transmission resources of the vehicle-mounted terminal are allocated by the base station, and the vehicle-mounted terminal transmits data on the side link according to the resources allocated by the base station. Mode 4: As shown Figure 2 As shown, the vehicle terminal adopts a sensing + reservation transmission method. The vehicle terminal obtains the set of available transmission resources in the resource pool by sensing, and then randomly selects a resource from the set for data transmission.

[0003] In NR-V2X, supporting autonomous driving is required, thus placing higher demands on data interaction between vehicles. In 5G NR systems, uplink supports two transmission waveforms: Cyclic Prefix OFDM (CP-OFDM) and Discrete Fourier Transform OFDM (DFT-OFDM). Rel-14 V2X adopts the uplink transmission waveform of LTE, using DFT-OFDM. In NR-V2X, for more flexible resource configuration, two similar transmission waveform structures to 5G NR uplink can be used, namely CP-OFDM and DFT-OFDM. However, in V2X systems, if these two transmission waveforms are used, how to select the transmission waveform when sending data and which transmission waveform the receiving end should use for data reception are problems that need to be solved. Summary of the Invention

[0004] To address the aforementioned technical problems, embodiments of the present invention provide a data transmission method, a terminal device, a network device, and a computer storage medium.

[0005] This invention provides a data transmission method, including:

[0006] The terminal device determines the transmission waveform used in the first channel;

[0007] The terminal device transmits data in the first channel according to the transmission waveform.

[0008] This invention provides a data transmission method, including:

[0009] The network device determines configuration information, which is used to indicate the transmission waveform used by the terminal device on the first channel;

[0010] The network device sends the configuration information to the terminal device.

[0011] This invention provides a terminal device, comprising:

[0012] The first processing unit determines the transmission waveform used by the first channel;

[0013] The first communication unit transmits data in the first channel according to the transmission waveform.

[0014] This invention provides a network device, comprising:

[0015] The second processing unit determines configuration information, which is used to indicate the transmission waveform used by the first channel of the terminal device.

[0016] The second communication unit sends the configuration information to the terminal device.

[0017] An embodiment of the present invention provides a terminal device, comprising: a processor and a memory for storing computer programs capable of running on the processor.

[0018] The processor is used to execute the steps of the aforementioned method when running the computer program.

[0019] An embodiment of the present invention provides a network device, comprising: a processor and a memory for storing computer programs capable of running on the processor.

[0020] The processor is used to execute the steps of the aforementioned method when running the computer program.

[0021] An embodiment of the present invention provides a computer storage medium storing computer-executable instructions, which, when executed, implement the aforementioned method steps.

[0022] The technical solution of this invention enables a terminal device to determine the transmission waveform corresponding to a channel before transmitting data via that channel, and then transmit data based on the selected transmission waveform. This solves the problem of how the receiving and transmitting ends select the transmission waveform, thereby ensuring the interaction efficiency of the terminal. Attached Figure Description

[0023] Figure 1 A schematic diagram of a transmission architecture in the Internet of Vehicles (IoV) Figure 1 ;

[0024] Figure 2 A schematic diagram of a transmission architecture in a vehicle network. Figure 2 ;

[0025] Figure 3 A schematic flowchart of a data transmission method provided in this embodiment of the invention. Figure 1 ;

[0026] Figure 4 A schematic flowchart of a data transmission method provided in this embodiment of the invention. Figure 2 ;

[0027] Figure 5 This is a schematic diagram of the terminal device composition structure according to an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the network device composition structure according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of a hardware architecture according to an embodiment of the present invention. Detailed Implementation

[0030] To gain a more detailed understanding of the features and technical content of the embodiments of the present invention, the implementation of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and illustration only and are not intended to limit the embodiments of the present invention.

[0031] Example 1

[0032] This invention provides a data transmission method, such as... Figure 3 As shown, it includes:

[0033] Step 101: The terminal device determines the transmission waveform used by the first channel;

[0034] Step 102: The terminal device transmits data in the first channel according to the transmission waveform.

[0035] Regarding the aforementioned step 101, the terminal device determines the transmission waveform used by the first channel. This can be done by the terminal device determining the transmission waveform used by the first channel based on at least one of the configuration information sent by the network device, the resource pool used by the first channel, and the carrier used by the first channel.

[0036] Specifically, this includes the following processing scenarios:

[0037] Scene 1

[0038] If the configuration information indicates a first transmission waveform, the terminal device determines the first transmission waveform as the transmission waveform used by the first channel among multiple transmission waveforms.

[0039] The plurality of transmission waveforms are pre-configured on the terminal device or configured by the network device.

[0040] The plurality of transmission waveforms are two or more transmission waveforms.

[0041] The multiple transmission waveforms pre-configured on the terminal device can be independent of the channel in advance; that is, the terminal device can arbitrarily select one of the multiple transmission waveforms as the transmission waveform of the first channel.

[0042] Scenario 2: The terminal device determines the transmission waveform used by the first channel based on the resource pool used by the first channel and a first correspondence, wherein the first correspondence is a correspondence between multiple resource pools and multiple transmission waveforms. The first correspondence is pre-configured on the terminal device or configured by the network device.

[0043] It is important to understand that the transmission waveforms used by different resource pools in this scenario can be defined through network configuration or pre-configuration to determine the corresponding transmission waveform form for each resource pool.

[0044] Specifically, in V2X, multiple resource pools can be configured through network configuration or pre-configuration. Different resource pools can correspond to different transmission waveforms, and the correspondence between resource pools and transmission waveforms can be determined through network configuration or pre-configuration.

[0045] When configuring on the network side, the network side can configure the transmission waveform of each resource pool through RRC signaling.

[0046] Scenario 3: The terminal device determines the transmission waveform used by the first channel based on the carrier used by the first channel and the second correspondence, wherein the second correspondence is a correspondence between multiple carriers and multiple transmission waveforms; the second correspondence is pre-configured on the terminal device or configured by the network device.

[0047] Specifically, different carriers use different transmission waveforms, and the transmission waveform form corresponding to the carrier can be defined through network configuration or pre-configuration.

[0048] V2X can support multiple carriers. For example, Rel-15 V2X can support 8 carriers, and different transmission waveforms can be configured for different carriers. For instance, considering backward compatibility with Rel-14 or Rel-15 terminals, DFT-OFDM transmission waveforms can be used on carriers with Rel-14 or Rel-15 terminals; DFT-OFDM or CP-OFDM can be used on other carriers. The specific carrier and transmission waveform used can be determined through pre-configuration or network configuration.

[0049] Another scenario is that V2X can operate on both dedicated carriers and uplink carriers. Therefore, it can use the same transmission waveform as uplink data on the uplink carrier and the same or different transmission waveform on the dedicated carrier.

[0050] It should also be noted that in the aforementioned scenarios, the first channel is the Physical Side Cross-Connection Sharing Channel (PSSCH), or the first channel is the Physical Side Cross-Connection Control Channel (PSCCH), or the first channel is the Physical Side Cross-Connection Feedback Channel (PSFCH), or the first channel is the Physical Side Cross-Connection Broadcast Channel (PSBCH).

[0051] Scene 4

[0052] This embodiment provides another method for determining the transmission waveform of a channel, wherein the first channel is the Physical Side Cross-Connection Shared Channel (PSSCH), and the Physical Side Cross-Connection Control Channel (PSCCH) corresponding to the first channel is the second channel.

[0053] The terminal device determines the transmission waveform used by the first channel, including: the terminal device determines the transmission waveform used by the first channel based on the second channel.

[0054] The second channel carries indication information, which is used to indicate the second transmission waveform.

[0055] The transmission waveform used by the data channel PSSCH is indicated by the control channel PSCCH.

[0056] The transmission waveform used by the PSCCH can be pre-configured, network-configured, or determined according to the methods described in scenarios 1 to 3 above. The PSCCH carries information indicating the PSSCH transmission waveform, which can be achieved in the following ways:

[0057] Method 1: The PSCCH displays an indication: The terminal device determines the transmission waveform used by the first channel based on the second channel, including: The terminal device determines that the second transmission waveform indicated by the indication information is the transmission waveform used by the first channel. For example, the SCI (Sidelink Control Information) carried by the PSCCH contains 1 bit of information to indicate the transmission waveform of the PSCCH, as shown in the table below:

[0058] 0 CP-OFDM 1 DFT-OFDM

[0059] It should be understood that the table above is only an example. In fact, 0 can represent DFT-OFDM and 1 can represent CP-OFDM, but this embodiment will not exhaustively list them.

[0060] It should also be understood that the table above provides an example of using 1 bit to indicate two transmission waveforms; this embodiment is applicable to using k bits to indicate 2. k A transmission waveform.

[0061] Method 2: Demodulation Reference Signal (DMRS) indication via PSCCH: The terminal device determines the transmission waveform used by the first channel based on at least one of the following: the sequence of the DMRS corresponding to the second channel, cyclic shift, orthogonal coverage code OCC, resource location, root sequence, and a third correspondence. The third correspondence is the correspondence between at least one of the following: the sequence of the DMRS, cyclic shift, orthogonal coverage code OCC, resource location, root sequence, and the transmission waveform.

[0062] The third correspondence is pre-configured on the terminal device or configured by the network device.

[0063] Specifically, different transmission waveforms can be indicated by the sequence, cyclic shift, OCC (Orthogonal Cover Code), resource location, and root sequence of the DMRS. The terminal detects the DMRS of the PSCCH, obtains at least one of the information such as the sequence, cyclic shift, OCC, resource location, and root sequence of the DMRS, and determines the transmission waveform adopted by the PSSCH corresponding to the PSCCH according to the third correspondence.

[0064] Method 3: Indication via PSCCH scrambling information: The terminal device determines the transmission waveform used by the first channel based on the scrambling information of the second channel and a fourth correspondence, wherein the fourth correspondence is a correspondence between multiple scrambling information and multiple transmission waveforms. The fourth correspondence is pre-configured on the terminal device or configured by the network device.

[0065] That is, the PSCCH carries SCI information, and the information bits of the SCI need to be scrambled. Different scrambling code sequences can be used to implicitly indicate the transmission waveform used by the PSCCH. The correspondence between different scrambling code information or scrambling code sequences and transmission waveforms is the fourth correspondence.

[0066] The terminal detects the SCI carried on the PSCCH, obtains the mask information used by the SCI, and determines the transmission waveform used by the PSSCH corresponding to the PSCCH according to the fourth correspondence.

[0067] Method 4: The terminal device determines the transmission waveform used by the first channel based on the mask information of the second channel and the fifth correspondence relationship, wherein the fifth correspondence relationship is the correspondence between multiple mask information and multiple transmission waveforms.

[0068] The fifth correspondence is pre-configured on the terminal device or configured by the network device.

[0069] That is, the PSCCH carries SCI information, and the information bits of the SCI need to be masked. Different mask sequences can be used to implicitly indicate the transmission waveform used by the PSCCH. The correspondence between different mask information or mask sequences and transmission waveforms is the fifth correspondence.

[0070] The terminal detects the SCI carried on the PSCCH, obtains the mask information used by the SCI, and determines the transmission waveform used by the PSSCH corresponding to the PSCCH according to the fourth correspondence.

[0071] As can be seen, by adopting the above scheme, the transmission waveform corresponding to the channel can be predetermined when the terminal device transmits data through the channel, and then transmission can be performed based on the selected transmission waveform. This solves the problems of how the transmitting end selects the transmission waveform and how the receiving end knows which transmission waveform the transmitting end is using for data transmission, thereby ensuring the interaction efficiency of the terminal.

[0072] Example 2

[0073] This invention provides a data transmission method, such as... Figure 3 As shown, it includes:

[0074] Step 101: The terminal device determines the transmission waveform used by the first channel;

[0075] Step 102: The terminal device transmits data in the first channel according to the transmission waveform.

[0076] Regarding step 101 mentioned above, the difference from Embodiment 1 is that the terminal device determines the transmission waveform used by the first channel, which can be:

[0077] The terminal device determines the transmission waveform used by the first channel based on at least one of the following: configuration information sent by the network device, the resource pool used by the first channel, the carrier used by the first channel, the type of the first channel, and pre-configuration information.

[0078] Furthermore, based on the four scenarios provided in Embodiment 1, this embodiment also provides a method for determining the transmission waveform used by the first channel based on the first channel type and one of the pre-configuration information. The specific scenarios are as follows:

[0079] Scenario 5: The terminal device determines the transmission waveform used by the first channel based on the type of the first channel and the sixth correspondence, wherein the sixth correspondence includes the correspondence between the channel type and the transmission waveform.

[0080] The first channel type includes at least one of the following: Physical Sidelink Control Channel (PSCCH), Physical Sidelink Shared Channel (PSSCH), Physical Sidelink Feedback Channel (PSFCH), and Physical Sidelink Broadcast Channel (PSBCH).

[0081] The sixth correspondence mentioned in this scenario can be configured on the network side or pre-configured on the terminal device.

[0082] The aforementioned pre-configuration methods can be understood as pre-configuration through protocol definitions, or pre-configuration through the aforementioned pre-configuration information, or pre-configuration through information sent from the network side. Specifically, pre-configuration through pre-configuration information means that the terminal device itself sets pre-configuration information, and the sixth correspondence is determined based on this pre-configuration information; pre-configuration through information sent from the network side can also be understood as the network side sending pre-configuration information or configuration information to the terminal device to pre-configure the sixth correspondence on the terminal device.

[0083] In addition, configuring the sixth correspondence on the network side can be understood as the network side sending configuration information to the terminal device and determining the sixth correspondence through this configuration information.

[0084] In other words, the transmission waveform corresponding to at least one channel type can be determined by the configuration information of the network device or the pre-configured information of the terminal device. Specifically, different channel types can correspond to different transmission waveforms. Of course, multiple channel types can correspond to the same transmission waveform, and it is not excluded that multiple transmission waveforms correspond to the same channel type.

[0085] For example, the correspondence between multiple channel types and multiple transmission waveforms can be configured through protocol definition, pre-configuration, or network-side configuration. For instance, the PSSCH might be pre-configured to use CP-OFDM, and the PSBCH to use DFT-OFDM. The terminal then determines the transmission waveform for the PSSCH (i.e., the first channel) to use CP-OFDM and the PSBCH to use DFT-OFDM based on this correspondence. Other correspondences are also possible, but they will not be exhaustively listed here.

[0086] Scenario 6: The terminal device determines the transmission waveform used by the first channel based on the pre-configuration information.

[0087] Specifically, the transmission waveform used by the first channel is determined through protocol definition or pre-configuration.

[0088] For example, through pre-configuration, it is determined that PSSCH uses CP-OFDM, PSBCH uses DFT-OFDM, PSFCH uses DFT-OFDM, and PSCCH uses DFT-OFDM. The terminal device determines the transmission waveform of the first channel based on the pre-configuration information, wherein the first channel is one of PSCCH, PSSCH, PSFCH, or PSBCH.

[0089] It should also be noted that in the aforementioned scenarios, the first channel is the Physical Side Cross-Connection Sharing Channel (PSSCH), or the first channel is the Physical Side Cross-Connection Control Channel (PSCCH), or the first channel is the Physical Side Cross-Connection Feedback Channel (PSFCH), or the first channel is the Physical Side Cross-Connection Broadcast Channel (PSBCH).

[0090] As can be seen, by adopting the above scheme, the transmission waveform corresponding to the channel can be predetermined when the terminal device transmits data through the channel, and then transmission can be performed based on the selected transmission waveform. This solves the problems of how the transmitting end selects the transmission waveform and how the receiving end knows which transmission waveform the transmitting end is using for data transmission, thereby ensuring the interaction efficiency of the terminal.

[0091] Example 3

[0092] This invention provides a data transmission method, such as... Figure 4 As shown, it includes:

[0093] Step 201: The network device determines configuration information, which is used to indicate the transmission waveform used by the terminal device for the first channel;

[0094] Step 202: The network device sends the configuration information to the terminal device.

[0095] Specifically, this includes the following processing scenarios:

[0096] Scene 1

[0097] The configuration information is used to indicate the first transmission waveform among multiple transmission waveforms.

[0098] The plurality of transmission waveforms are pre-configured on the terminal device or configured by the network device.

[0099] The plurality of transmission waveforms are two or more transmission waveforms.

[0100] If the configuration information indicates a first transmission waveform, the terminal device determines the first transmission waveform as the transmission waveform used by the first channel among multiple transmission waveforms.

[0101] The multiple transmission waveforms pre-configured on the terminal device can be independent of the channel in advance; that is, the terminal device can arbitrarily select one of the multiple transmission waveforms as the transmission waveform of the first channel.

[0102] Scenario 2: The configuration information is used to indicate a first correspondence, wherein the first correspondence is a correspondence between multiple resource pools and multiple transmission waveforms.

[0103] In this scenario, the terminal device determines the transmission waveform used by the first channel based on the resource pool used by the first channel and a first correspondence, wherein the first correspondence is a correspondence between multiple resource pools and multiple transmission waveforms. The first correspondence is pre-configured on the terminal device or configured by the network device.

[0104] It is important to understand that the transmission waveforms used by different resource pools in this scenario can be defined through network configuration or pre-configuration to determine the corresponding transmission waveform form for each resource pool.

[0105] Specifically, in V2X, multiple resource pools can be configured through network configuration or pre-configuration. Different resource pools can correspond to different transmission waveforms, and the correspondence between resource pools and transmission waveforms can be determined through network configuration or pre-configuration.

[0106] When configuring on the network side, the network side can configure the transmission waveform of each resource pool through RRC signaling.

[0107] Scenario 3: The configuration information is used to indicate a second correspondence, wherein the second correspondence is a correspondence between multiple carriers and multiple transmission waveforms.

[0108] In this scenario, the terminal device determines the transmission waveform used by the first channel based on the carrier used by the first channel and the second correspondence, wherein the second correspondence is a correspondence between multiple carriers and multiple transmission waveforms; the second correspondence is pre-configured on the terminal device or configured by the network device.

[0109] Specifically, different carriers use different transmission waveforms, and the transmission waveform form corresponding to the carrier can be defined through network configuration or pre-configuration.

[0110] V2X can support multiple carriers. For example, Rel-15 V2X can support 8 carriers, and different transmission waveforms can be configured for different carriers. For instance, considering backward compatibility with Rel-14 or Rel-15 terminals, DFT-OFDM transmission waveforms are used on carriers with Rel-14 or Rel-15 terminals; DFT-OFDM or CP-OFDM can be used on other carriers. The specific carrier and transmission waveform used can be determined through pre-configuration or network configuration.

[0111] Another scenario is that V2X can operate on both dedicated carriers and uplink carriers. Therefore, it can use the same transmission waveform as uplink data on the uplink carrier and the same or different transmission waveform on the dedicated carrier.

[0112] It should also be noted that in the aforementioned scenarios, the first channel is either the Physical Side Cross-Connection Sharing Channel (PSSCH) or the Physical Side Cross-Connection Control Channel (PSCCH).

[0113] Scene 4

[0114] This embodiment provides another method for determining the transmission waveform used by a channel, wherein the first channel is the Physical Side Cross-Connection Shared Channel (PSSCH), and the Physical Side Cross-Connection Control Channel (PSCCH) corresponding to the first channel is the second channel.

[0115] Accordingly, the terminal device determines the transmission waveform used by the first channel based on the second channel.

[0116] The second channel carries indication information, which is used to indicate the second transmission waveform.

[0117] The transmission waveform used by the data channel PSSCH is indicated by the control channel PSCCH.

[0118] The transmission waveform used by the PSCCH can be pre-configured, network-configured, or determined according to the methods described in scenarios 1 to 3 above. The PSCCH carries information indicating the PSSCH transmission waveform, which can be achieved in the following ways:

[0119] Method 1: The PSCCH displays an indication: The terminal device determines the transmission waveform used by the first channel based on the second channel, including: The terminal device determines that the second transmission waveform indicated by the indication information is the transmission waveform used by the first channel. For example, the SCI (Sidelink Control Information) carried by the PSCCH contains 1 bit of information to indicate the transmission waveform of the PSCCH, as shown in the table below:

[0120] 0 CP-OFDM 1 DFT-OFDM

[0121] It should be understood that the table above is only an example. In fact, 0 can represent DFT-OFDM and 1 can represent CP-OFDM, but this embodiment will not exhaustively list them.

[0122] It should also be understood that the table above provides an example of using 1 bit to indicate two transmission waveforms; this embodiment is applicable to using k bits to indicate 2. k A transmission waveform.

[0123] Method 2: Indication via PSCCH DMRS: The configuration information is used to indicate a third correspondence, wherein the third correspondence is the correspondence between at least one of the following: DMRS sequence, cyclic shift, orthogonal overlay code OCC, resource location, and root sequence, and the transmission waveform.

[0124] The third correspondence is pre-configured on the terminal device or configured by the network device.

[0125] Specifically, different transmission waveforms can be indicated by the sequence, cyclic shift, OCC (Orthogonal Cover Code), resource location, and root sequence of the DMRS. The terminal detects the DMRS of the PSCCH, obtains at least one of the information such as the sequence, cyclic shift, OCC, resource location, and root sequence of the DMRS, and determines the transmission waveform adopted by the PSSCH corresponding to the PSCCH according to the third correspondence.

[0126] Method 3: The configuration information is used to indicate the fourth correspondence, wherein the fourth correspondence is the correspondence between multiple scrambling code information and transmission waveform.

[0127] That is, the PSCCH carries SCI information, and the information bits of the SCI need to be scrambled. Different scrambling code sequences can be used to implicitly indicate the transmission waveform used by the PSCCH. The correspondence between different scrambling code information or scrambling code sequences and transmission waveforms is the fourth correspondence.

[0128] The terminal detects the SCI carried on the PSCCH, obtains the mask information used by the SCI, and determines the transmission waveform used by the PSSCH corresponding to the PSCCH according to the fourth correspondence.

[0129] Method 4: The configuration information is used to indicate the fifth correspondence, wherein the fifth correspondence is the correspondence between multiple mask information and transmission waveforms.

[0130] That is, the PSCCH carries SCI information, and the information bits of the SCI need to be masked. Different mask sequences can be used to implicitly indicate the transmission waveform used by the PSCCH. The correspondence between different mask information or mask sequences and transmission waveforms is the fifth correspondence.

[0131] The terminal detects the SCI carried on the PSCCH, obtains the mask information used by the SCI, and determines the transmission waveform used by the PSSCH corresponding to the PSCCH according to the fourth correspondence.

[0132] As can be seen, by adopting the above scheme, the transmission waveform corresponding to the channel can be predetermined when the terminal device transmits data through the channel, and then transmission can be performed based on the selected transmission waveform. This solves the problems of how the transmitting end selects the transmission waveform and how the receiving end knows which transmission waveform the transmitting end is using for data transmission, thereby ensuring the interaction efficiency of the terminal.

[0133] Example 4

[0134] This invention provides a data transmission method, such as... Figure 4 As shown, it includes:

[0135] Step 201: The network device determines configuration information, which is used to indicate the transmission waveform used by the terminal device for the first channel;

[0136] Step 202: The network device sends the configuration information to the terminal device.

[0137] Unlike Embodiment 3, this embodiment provides the following scenario in addition to the various scenarios provided in Embodiment 3:

[0138] Scenario 5: The configuration information is used to indicate the sixth correspondence, wherein the sixth correspondence includes the correspondence between channel type and transmission waveform.

[0139] The first channel type includes at least one of the following: Physical Sidelink Control Channel (PSCCH), Physical Sidelink Shared Channel (PSSCH), Physical Sidelink Feedback Channel (PSFCH), and Physical Sidelink Broadcast Channel (PSBCH).

[0140] In this scenario, the sixth correspondence is configured by the network device for the terminal device and sent to the terminal device through configuration information. That is to say, through the configuration information of the network device, the terminal device can be indicated with at least one transmission waveform corresponding to a channel type. Specifically, different channel types can correspond to different transmission waveforms. Of course, multiple channel types can correspond to the same transmission waveform, and it is not excluded that multiple transmission waveforms may correspond to the same channel type.

[0141] For example, the configuration information indicates the sixth correspondence to the terminal device as follows: the PSSCH uses a CP-OFDM transmission waveform, and the PSBCH uses a DFT-OFDM transmission waveform. Accordingly, the terminal determines that the PSSCH (i.e., the first channel) uses a CP-OFDM transmission waveform, and the PSBCH uses a DFT-OFDM transmission waveform based on this correspondence. Of course, other correspondences may exist, but they will not be exhaustively listed here.

[0142] When configuring on the network side, the network side can configure the transmission waveform of each resource pool through RRC signaling.

[0143] As can be seen, by adopting the above scheme, the transmission waveform corresponding to the channel can be predetermined when the terminal device transmits data through the channel, and then transmission can be performed based on the selected transmission waveform. This solves the problems of how the transmitting end selects the transmission waveform and how the receiving end knows which transmission waveform the transmitting end is using for data transmission, thereby ensuring the interaction efficiency of the terminal.

[0144] Example 5

[0145] This invention provides a terminal device, such as... Figure 5 As shown, it includes:

[0146] The first processing unit 31 determines the transmission waveform used by the first channel;

[0147] The first communication unit 32 transmits data in the first channel according to the transmission waveform.

[0148] Regarding the first processing unit 31, determining the transmission waveform used by the first channel can be achieved by the terminal device determining the transmission waveform used by the first channel based on at least one of the configuration information sent by the network device, the resource pool used by the first channel, and the carrier used by the first channel.

[0149] Specifically, this includes the following processing scenarios:

[0150] Scene 1

[0151] If the configuration information indicates a first transmission waveform, the first processing unit 31 determines the first transmission waveform as the transmission waveform used by the first channel among multiple transmission waveforms.

[0152] The plurality of transmission waveforms are pre-configured on the terminal device or configured by the network device.

[0153] The plurality of transmission waveforms are two or more transmission waveforms.

[0154] The multiple transmission waveforms pre-configured on the terminal device can be independent of the channel in advance; that is, the terminal device can arbitrarily select one of the multiple transmission waveforms as the transmission waveform of the first channel.

[0155] Scenario 2: The first processing unit 31 determines the transmission waveform used by the first channel based on the resource pool used by the first channel and a first correspondence relationship, wherein the first correspondence relationship is a correspondence relationship between multiple resource pools and multiple transmission waveforms. The first correspondence relationship is pre-configured on the terminal device or configured by the network device.

[0156] It is important to understand that different resource pools in this scenario use different transmission waveforms, and the transmission waveform form corresponding to the resource pool can be defined through network configuration or pre-configuration.

[0157] Specifically, in V2X, multiple resource pools can be configured through network configuration or pre-configuration. Different resource pools can correspond to different transmission waveforms, and the correspondence between resource pools and transmission waveforms can be determined through network configuration or pre-configuration.

[0158] When configuring on the network side, the network side can configure the transmission waveform of each resource pool through RRC signaling.

[0159] Scenario 3: The first processing unit 31 determines the transmission waveform used by the first channel based on the carrier used by the first channel and the second correspondence, wherein the second correspondence is a correspondence between multiple carriers and multiple transmission waveforms; the second correspondence is pre-configured on the terminal device or configured by the network device.

[0160] Specifically, different carriers use different transmission waveforms, and the transmission waveform form corresponding to the carrier can be defined through network configuration or pre-configuration.

[0161] V2X can support multiple carriers. For example, Rel-15 V2X can support 8 carriers, and different transmission waveforms can be configured for different carriers. For instance, considering backward compatibility with Rel-14 or Rel-15 terminals, DFT-OFDM transmission waveforms are used on carriers with Rel-14 or Rel-15 terminals; DFT-OFDM or CP-OFDM can be used on other carriers. The specific carrier and transmission waveform used can be determined through pre-configuration or network configuration.

[0162] Another scenario is that V2X can operate on both dedicated carriers and uplink carriers. Therefore, it can use the same transmission waveform as uplink data on the uplink carrier and the same or different transmission waveform on the dedicated carrier.

[0163] It should also be noted that in the aforementioned scenarios, the first channel is the Physical Side Cross-Connection Sharing Channel (PSSCH), or the first channel is the Physical Side Cross-Connection Control Channel (PSCCH), or the first channel is the Physical Side Cross-Connection Feedback Channel (PSFCH), or the first channel is the Physical Side Cross-Connection Broadcast Channel (PSBCH).

[0164] Scene 4

[0165] This embodiment provides another method for determining the transmission waveform used by a channel, wherein the first channel is the Physical Side Cross-Connection Shared Channel (PSSCH), and the Physical Side Cross-Connection Control Channel (PSCCH) corresponding to the first channel is the second channel.

[0166] The first processing unit 31 determines the transmission waveform used by the first channel based on the second channel.

[0167] The second channel carries indication information, which is used to indicate the second transmission waveform.

[0168] The transmission waveform used by the data channel PSSCH is indicated by the control channel PSCCH.

[0169] The transmission waveform used by the PSCCH can be pre-configured, network-configured, or determined according to the methods described in scenarios 1 to 3 above. The PSCCH carries information indicating the PSSCH transmission waveform, which can be achieved in the following ways:

[0170] Method 1: The PSCCH displays an indication: The first processing unit 31 determines the transmission waveform used by the first channel based on the second channel, including: the terminal device determining that the second transmission waveform indicated by the indication information is the transmission waveform used by the first channel. For example, the SCI (Sidelink Control Information) carried by the PSCCH contains 1 bit of information to indicate the transmission waveform of the PSCCH, as shown in the table below:

[0171] 0 CP-OFDM 1 DFT-OFDM

[0172] It should be understood that the table above is only an example. In fact, 0 can represent DFT-OFDM and 1 can represent CP-OFDM, but this embodiment will not exhaustively list them.

[0173] It should also be understood that the table above provides an example of using 1 bit to indicate two transmission waveforms; this embodiment is applicable to using k bits to indicate 2. k A transmission waveform.

[0174] Method 2: via PSCCH DMRS indication: The first processing unit 31 determines the transmission waveform used by the first channel based on at least one of the DMRS sequence, cyclic shift, orthogonal coverage code OCC, resource location, and root sequence corresponding to the second channel, as well as a third correspondence, wherein the third correspondence is the correspondence between at least one of the DMRS sequence, cyclic shift, orthogonal coverage code OCC, resource location, and root sequence and the transmission waveform.

[0175] The third correspondence is pre-configured on the terminal device or configured by the network device.

[0176] Specifically, different transmission waveforms can be indicated by the sequence, cyclic shift, OCC (Orthogonal Cover Code), resource location, and root sequence of the DMRS. The terminal detects the DMRS of the PSCCH, obtains at least one of the information such as the sequence, cyclic shift, OCC, resource location, and root sequence of the DMRS, and determines the transmission waveform adopted by the PSSCH corresponding to the PSCCH according to the third correspondence.

[0177] Method 3: Indication via PSCCH scrambling information: The first processing unit 31 determines the transmission waveform used by the first channel based on the scrambling information of the second channel and a fourth correspondence, wherein the fourth correspondence is a correspondence between multiple scrambling information and multiple transmission waveforms. The fourth correspondence is pre-configured on the terminal device or configured by the network device.

[0178] That is, the PSCCH carries SCI information, and the information bits of the SCI need to be scrambled. Different scrambling code sequences can be used to implicitly indicate the transmission waveform used by the PSCCH. The correspondence between different scrambling code information or scrambling code sequences and transmission waveforms is the fourth correspondence.

[0179] The terminal detects the SCI carried on the PSCCH, obtains the mask information used by the SCI, and determines the transmission waveform used by the PSSCH corresponding to the PSCCH according to the fourth correspondence.

[0180] Method 4: The first processing unit 31 determines the transmission waveform used by the first channel based on the mask information of the second channel and the fifth correspondence, wherein the fifth correspondence is the correspondence between multiple mask information and multiple transmission waveforms.

[0181] The fifth correspondence is pre-configured on the terminal device or configured by the network device.

[0182] That is, the PSCCH carries SCI information, and the information bits of the SCI need to be masked. Different mask sequences can be used to implicitly indicate the transmission waveform used by the PSCCH. The correspondence between different mask information or mask sequences and transmission waveforms is the fifth correspondence.

[0183] The terminal detects the SCI carried on the PSCCH, obtains the mask information used by the SCI, and determines the transmission waveform used by the PSSCH corresponding to the PSCCH according to the fourth correspondence.

[0184] As can be seen, by adopting the above scheme, the transmission waveform corresponding to the channel can be predetermined when the terminal device transmits data through the channel, and then transmission can be performed based on the selected transmission waveform. This solves the problems of how the transmitting end selects the transmission waveform and how the receiving end knows which transmission waveform the transmitting end is using for data transmission, thereby ensuring the interaction efficiency of the terminal.

[0185] Example 6

[0186] This invention provides a terminal device, such as... Figure 5 As shown, it includes:

[0187] The first processing unit 31 determines the transmission waveform used by the first channel;

[0188] The first communication unit 32 transmits data in the first channel according to the transmission waveform.

[0189] Regarding the first processing unit 31, it determines the transmission waveform used by the first channel based on at least one of the configuration information sent by the network device, the resource pool used by the first channel, the carrier used by the first channel, the type of the first channel, and pre-configuration information.

[0190] Furthermore, based on the four scenarios provided in Embodiment 5, this embodiment also provides a method for determining the transmission waveform used by the first channel based on the first channel type and one of the pre-configuration information. The specific scenarios are as follows:

[0191] Scenario 5: The first processing unit 31 determines the transmission waveform used by the first channel based on the type of the first channel and the sixth correspondence, wherein the sixth correspondence includes the correspondence between the channel type and the transmission waveform.

[0192] The first channel type includes at least one of the following: Physical Sidelink Control Channel (PSCCH), Physical Sidelink Shared Channel (PSSCH), Physical Sidelink Feedback Channel (PSFCH), and Physical Sidelink Broadcast Channel (PSBCH).

[0193] The sixth correspondence mentioned in this scenario can be configured on the network side or pre-configured on the terminal device.

[0194] The aforementioned pre-configuration methods can be understood as pre-configuration through protocol definitions, or pre-configuration through the aforementioned pre-configuration information, or pre-configuration through information sent from the network side. Specifically, pre-configuration through pre-configuration information means that the terminal device itself sets pre-configuration information, and the sixth correspondence is determined based on this pre-configuration information; pre-configuration through information sent from the network side can also be understood as the network side sending pre-configuration information or configuration information to the terminal device to pre-configure the sixth correspondence on the terminal device.

[0195] In addition, configuring the sixth correspondence on the network side can be understood as the network side sending configuration information to the terminal device and determining the sixth correspondence through this configuration information.

[0196] In other words, the transmission waveform corresponding to at least one channel type can be determined by the configuration information of the network device or the pre-configured information of the terminal device. Specifically, different channel types can correspond to different transmission waveforms. Of course, multiple channel types can correspond to the same transmission waveform, and it is not excluded that multiple transmission waveforms correspond to the same channel type.

[0197] For example, the correspondence between multiple channel types and multiple transmission waveforms can be configured through protocol definition, pre-configuration, or network-side configuration. For instance, the PSSCH might be pre-configured to use CP-OFDM, and the PSBCH to use DFT-OFDM. The terminal then determines the transmission waveform for the PSSCH (i.e., the first channel) to use CP-OFDM and the PSBCH to use DFT-OFDM based on this correspondence. Other correspondences are also possible, but they will not be exhaustively listed here.

[0198] Scenario 6: The first processing unit 31 determines the transmission waveform used by the first channel based on the pre-configuration information.

[0199] Specifically, the transmission waveform used by the first channel is determined through protocol definition or pre-configuration.

[0200] For example, through pre-configuration, it is determined that PSSCH uses CP-OFDM, PSBCH uses DFT-OFDM, PSFCH uses DFT-OFDM, and PSCCH uses DFT-OFDM. The terminal device determines the transmission waveform of the first channel based on the pre-configuration information, wherein the first channel is one of PSCCH, PSSCH, PSFCH, or PSBCH.

[0201] It should also be noted that in the aforementioned scenarios, the first channel is the Physical Side Cross-Connection Sharing Channel (PSSCH), or the first channel is the Physical Side Cross-Connection Control Channel (PSCCH), or the first channel is the Physical Side Cross-Connection Feedback Channel (PSFCH), or the first channel is the Physical Side Cross-Connection Broadcast Channel (PSBCH).

[0202] As can be seen, by adopting the above scheme, the transmission waveform corresponding to the channel can be predetermined when the terminal device transmits data through the channel, and then transmission can be performed based on the selected transmission waveform. This solves the problems of how the transmitting end selects the transmission waveform and how the receiving end knows which transmission waveform the transmitting end is using for data transmission, thereby ensuring the interaction efficiency of the terminal.

[0203] Example 7

[0204] This invention provides a network device, such as... Figure 6 As shown, it includes:

[0205] The second processing unit 41 determines configuration information, which is used to indicate the transmission waveform used by the first channel of the terminal device.

[0206] The second communication unit 42 sends the configuration information to the terminal device.

[0207] Specifically, this includes the following processing scenarios:

[0208] Scene 1

[0209] The configuration information is used to indicate the first transmission waveform among multiple transmission waveforms.

[0210] The plurality of transmission waveforms are pre-configured on the terminal device or configured by the network device.

[0211] The plurality of transmission waveforms are two or more transmission waveforms.

[0212] The second communication unit 42 configures the multiple transmission waveforms for the terminal device.

[0213] If the configuration information indicates a first transmission waveform, the terminal device determines the first transmission waveform as the transmission waveform used by the first channel among multiple transmission waveforms.

[0214] The multiple transmission waveforms pre-configured on the terminal device can be independent of the channel in advance; that is, the terminal device can arbitrarily select one of the multiple transmission waveforms as the transmission waveform of the first channel.

[0215] Scenario 2: The configuration information is used to indicate a first correspondence, wherein the first correspondence is a correspondence between multiple resource pools and multiple transmission waveforms.

[0216] In this scenario, the terminal device determines the transmission waveform used by the first channel based on the resource pool used by the first channel and a first correspondence, wherein the first correspondence is a correspondence between multiple resource pools and multiple transmission waveforms. The first correspondence is pre-configured on the terminal device or configured by the network device.

[0217] It is important to understand that the transmission waveforms used by different resource pools in this scenario can be defined through network configuration or pre-configuration to determine the corresponding transmission waveform form for each resource pool.

[0218] Specifically, in V2X, multiple resource pools can be configured through network configuration or pre-configuration. Different resource pools can correspond to different transmission waveforms, and the correspondence between resource pools and transmission waveforms can be determined through network configuration or pre-configuration.

[0219] When configuring on the network side, the network side can configure the transmission waveform of each resource pool through RRC signaling.

[0220] Scenario 3: The configuration information is used to indicate a second correspondence, wherein the second correspondence is a correspondence between multiple carriers and multiple transmission waveforms.

[0221] In this scenario, the terminal device determines the transmission waveform used by the first channel based on the carrier used by the first channel and the second correspondence, wherein the second correspondence is a correspondence between multiple carriers and multiple transmission waveforms; the second correspondence is pre-configured on the terminal device or configured by the network device.

[0222] Specifically, different carriers use different transmission waveforms, and the transmission waveform form corresponding to the carrier can be defined through network configuration or pre-configuration.

[0223] V2X can support multiple carriers. For example, Rel-15 V2X can support 8 carriers, and different transmission waveforms can be configured for different carriers. For instance, considering backward compatibility with Rel-14 or Rel-15 terminals, DFT-OFDM transmission waveforms are used on carriers with Rel-14 or Rel-15 terminals; DFT-OFDM or CP-OFDM can be used on other carriers. The specific carrier and transmission waveform used can be determined through pre-configuration or network configuration.

[0224] Another scenario is that V2X can operate on both dedicated carriers and uplink carriers. Therefore, it can use the same transmission waveform as uplink data on the uplink carrier and the same or different transmission waveform on the dedicated carrier.

[0225] It should also be noted that in the aforementioned scenarios, the first channel is the Physical Side Cross-Connection Sharing Channel (PSSCH), or the first channel is the Physical Side Cross-Connection Control Channel (PSCCH), or the first channel is the Physical Side Cross-Connection Feedback Channel (PSFCH), or the first channel is the Physical Side Cross-Connection Broadcast Channel (PSBCH).

[0226] Scene 4

[0227] This embodiment provides another method for determining the transmission waveform used by a channel, wherein the first channel is the Physical Side Cross-Connection Shared Channel (PSSCH), and the Physical Side Cross-Connection Control Channel (PSCCH) corresponding to the first channel is the second channel.

[0228] Accordingly, the terminal device determines the transmission waveform used by the first channel based on the second channel.

[0229] The second channel carries indication information, which is used to indicate the second transmission waveform.

[0230] The transmission waveform used by the data channel PSSCH is indicated by the control channel PSCCH.

[0231] The transmission waveform used by the PSCCH can be pre-configured, network-configured, or determined according to the methods described in scenarios 1 to 3 above. The PSCCH carries information indicating the PSSCH transmission waveform, which can be achieved in the following ways:

[0232] Method 1: The PSCCH displays an indication: The terminal device determines the transmission waveform used by the first channel based on the second channel, including: The terminal device determines that the second transmission waveform indicated by the indication information is the transmission waveform used by the first channel. For example, the SCI (Sidelink Control Information) carried by the PSCCH contains 1 bit of information to indicate the transmission waveform of the PSCCH, as shown in the table below:

[0233] 0 CP-OFDM 1 DFT-OFDM

[0234] It should be understood that the table above is only an example. In fact, 0 can represent DFT-OFDM and 1 can represent CP-OFDM, but this embodiment will not exhaustively list them.

[0235] It should be understood that the table above provides an example of using 1 bit to indicate two transmission waveforms. This embodiment is applicable to using k bits to indicate 2. k A transmission waveform.

[0236] Method 2: Indication via PSCCH DMRS: The configuration information is used to indicate a third correspondence, wherein the third correspondence is the correspondence between at least one of the following: DMRS sequence, cyclic shift, orthogonal overlay code OCC, resource location, and root sequence, and the transmission waveform.

[0237] The third correspondence is pre-configured on the terminal device or configured by the network device.

[0238] Specifically, different transmission waveforms can be indicated by the sequence, cyclic shift, OCC (Orthogonal Cover Code), resource location, and root sequence of the DMRS. The terminal detects the DMRS of the PSCCH, obtains at least one of the information such as the sequence, cyclic shift, OCC, resource location, and root sequence of the DMRS, and determines the transmission waveform adopted by the PSSCH corresponding to the PSCCH according to the third correspondence.

[0239] Method 3: The configuration information is used to indicate the fourth correspondence, wherein the fourth correspondence is the correspondence between multiple scrambling code information and transmission waveform.

[0240] That is, the PSCCH carries SCI information, and the information bits of the SCI need to be scrambled. Different scrambling code sequences can be used to implicitly indicate the transmission waveform used by the PSCCH. The correspondence between different scrambling code information or scrambling code sequences and transmission waveforms is the fourth correspondence.

[0241] The terminal detects the SCI carried on the PSCCH, obtains the mask information used by the SCI, and determines the transmission waveform used by the PSSCH corresponding to the PSCCH according to the fourth correspondence.

[0242] Method 4: The configuration information is used to indicate the fifth correspondence, wherein the fifth correspondence is the correspondence between multiple mask information and transmission waveforms.

[0243] That is, the PSCCH carries SCI information, and the information bits of the SCI need to be masked. Different mask sequences can be used to implicitly indicate the transmission waveform used by the PSCCH. The correspondence between different mask information or mask sequences and transmission waveforms is the fifth correspondence.

[0244] The terminal detects the SCI carried on the PSCCH, obtains the mask information used by the SCI, and determines the transmission waveform used by the PSSCH corresponding to the PSCCH according to the fourth correspondence.

[0245] As can be seen, by adopting the above scheme, when a terminal device transmits data through a channel, it can first determine the transmission waveform corresponding to the channel, and then transmit data based on the selected transmission waveform. This solves the problems of how the transmitting end selects the transmission waveform and how the receiving end knows which transmission waveform the transmitting end is using for data transmission, thereby ensuring the interaction efficiency of the terminal.

[0246] Example 8

[0247] This invention provides a network device, such as... Figure 6 As shown, it includes:

[0248] The second processing unit 41 determines configuration information, which is used to indicate the transmission waveform used by the first channel of the terminal device.

[0249] The second communication unit 42 sends the configuration information to the terminal device.

[0250] Following the various scenarios provided in Embodiment 7, this embodiment also provides the following scenario:

[0251] Scenario 5: The configuration information is used to indicate the sixth correspondence, wherein the sixth correspondence includes the correspondence between channel type and transmission waveform.

[0252] The first channel type includes at least one of the following: Physical Sidelink Control Channel (PSCCH), Physical Sidelink Shared Channel (PSSCH), Physical Sidelink Feedback Channel (PSFCH), and Physical Sidelink Broadcast Channel (PSBCH).

[0253] In this scenario, the sixth correspondence is configured by the network device for the terminal device and sent to the terminal device through configuration information. That is to say, through the configuration information of the network device, the terminal device can be indicated with at least one transmission waveform corresponding to a channel type. Specifically, different channel types can correspond to different transmission waveforms. Of course, multiple channel types can correspond to the same transmission waveform, and it is not excluded that multiple transmission waveforms may correspond to the same channel type.

[0254] For example, through configuration information, the sixth correspondence is indicated to the terminal device as follows: PSSCH uses CP-OFDM transmission waveform, and PSBCH uses DFT-OFDM transmission waveform. Accordingly, the terminal determines that PSSCH (i.e., the first channel) uses CP-OFDM transmission waveform, and PSBCH uses DFT-OFDM transmission waveform, based on this correspondence. Of course, other correspondences may exist, but they will not be exhaustively listed here.

[0255] When configuring on the network side, the network side can configure the transmission waveform of each resource pool through RRC signaling.

[0256] As can be seen, by adopting the above scheme, the transmission waveform corresponding to the channel can be predetermined when the terminal device transmits data through the channel, and then transmission can be performed based on the selected transmission waveform. This solves the problems of how the transmitting end selects the transmission waveform and how the receiving end knows which transmission waveform the transmitting end is using for data transmission, thereby ensuring the interaction efficiency of the terminal.

[0257] This invention also provides a hardware architecture for a terminal device or network device, such as... Figure 7 As shown, it includes: at least one processor 51, memory 52, and at least one network interface 53. The various components are coupled together via a bus system 54. It is understood that the bus system 54 is used to implement communication between these components. In addition to a data bus, the bus system 54 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 5 The general labeled all buses as Bus System 54.

[0258] It is understood that the memory 52 in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.

[0259] In some implementations, memory 52 stores executable modules or data structures, or subsets thereof, or extended sets thereof:

[0260] Operating system 521 and application 522.

[0261] The processor 51 is configured to process the method steps of the aforementioned embodiment 1, which will not be described in detail here.

[0262] An embodiment of the present invention provides a computer storage medium storing computer-executable instructions, which, when executed, implement the method steps of the aforementioned embodiment one.

[0263] If the device described in the embodiments of the present invention is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), magnetic disks, or optical disks. Thus, the embodiments of the present invention are not limited to any specific hardware and software combination.

[0264] Accordingly, embodiments of the present invention also provide a computer storage medium storing a computer program configured to execute the data scheduling method of the embodiments of the present invention.

[0265] Although preferred embodiments of the invention have been disclosed for illustrative purposes, those skilled in the art will recognize that various modifications, additions, and substitutions are possible, and therefore the scope of the invention should not be limited to the embodiments described above.

Claims

1. A data transmission method, comprising: The terminal device determines the transmission waveform used by the first channel based on the second channel; The terminal device transmits data in the first channel according to the transmission waveform; The first channel is the Physical Side Cross-Connection Shared Channel (PSSCH), and the second channel is the Physical Side Cross-Connection Control Channel (PSCCH) corresponding to the first channel.

2. The method according to claim 1, wherein, The second channel carries indication information, which is used to indicate a second transmission waveform; The terminal device determines the transmission waveform used by the first channel based on the second channel, including: The terminal device determines that the second transmission waveform indicated by the indication information is the transmission waveform used by the first channel.

3. The method according to claim 1, wherein, The terminal device determines the transmission waveform used by the first channel based on the second channel, including: The terminal device determines the transmission waveform used by the first channel based on at least one of the following: the sequence of DMRS corresponding to the second channel, cyclic shift, orthogonal coverage code OCC, resource location, root sequence, and a third correspondence. The third correspondence is the correspondence between at least one of the following: the sequence of DMRS, cyclic shift, orthogonal coverage code OCC, resource location, root sequence, and transmission waveform.

4. The method according to claim 3, wherein, The third correspondence is pre-configured on the terminal device or configured by the network device.

5. The method according to claim 1, wherein, The terminal device determines the transmission waveform used by the first channel based on the second channel, including: The terminal device determines the transmission waveform used by the first channel based on the scrambling code information of the second channel and the fourth correspondence relationship, wherein the fourth correspondence relationship is the correspondence between multiple scrambling code information and multiple transmission waveforms.

6. The method according to claim 5, wherein, The fourth correspondence is pre-configured on the terminal device or configured by the network device.

7. The method according to claim 1, wherein, The terminal device determines the transmission waveform used by the first channel based on the second channel, including: The terminal device determines the transmission waveform used by the first channel based on the mask information of the second channel and the fifth correspondence, wherein the fifth correspondence is the correspondence between multiple mask information and multiple transmission waveforms.

8. The method according to claim 7, wherein, The fifth correspondence is pre-configured on the terminal device or configured by the network device.

9. A terminal device, comprising: The first processing unit determines the transmission waveform used by the first channel based on the second channel; The first communication unit performs data transmission in the first channel according to the transmission waveform; The first channel is the Physical Side Cross-Connection Shared Channel (PSSCH), and the second channel is the Physical Side Cross-Connection Control Channel (PSCCH) corresponding to the first channel.

10. The terminal device according to claim 9, wherein, The second channel carries indication information, which is used to indicate a second transmission waveform; The first processing unit determines that the second transmission waveform indicated by the indication information is the transmission waveform used by the first channel.

11. The terminal device according to claim 9, wherein, The first processing unit determines the transmission waveform used by the first channel based on at least one of the following: the sequence of the DMRS corresponding to the second channel, the cyclic shift, the orthogonal coverage code OCC, the resource location, the root sequence, and a third correspondence, wherein the third correspondence is the correspondence between at least one of the DMRS sequence, the cyclic shift, the orthogonal coverage code OCC, the resource location, the root sequence, and the transmission waveform.

12. The terminal device according to claim 11, wherein, The third correspondence is pre-configured on the terminal device or configured by the network device.

13. The terminal device according to claim 9, wherein, The first processing unit determines the transmission waveform used by the first channel based on the scrambling code information of the second channel and the fourth correspondence relationship, wherein the fourth correspondence relationship is the correspondence between multiple scrambling code information and multiple transmission waveforms.

14. The terminal device according to claim 13, wherein, The fourth correspondence is pre-configured on the terminal device or configured by the network device.

15. The terminal device according to claim 9, wherein, The first processing unit determines the transmission waveform used by the first channel based on the mask information of the second channel and the fifth correspondence, wherein the fifth correspondence is the correspondence between multiple mask information and multiple transmission waveforms.

16. The terminal device according to claim 15, wherein, The fifth correspondence is pre-configured on the terminal device or configured by the network device.

17. A terminal device, comprising: The processor and the memory used to store computer programs that can run on the processor. When the processor is used to run the computer program, it performs the steps of the method according to any one of claims 1-8.

18. A computer storage medium storing computer-executable instructions that, when executed, implement the steps of the method according to any one of claims 1-8.

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