CN116636276A - Data transmission method and device - Google Patents

Abstract

The present disclosure provides a data transmission method and apparatus, which may be applied in a mobile communication technology, where the method includes: the method comprises the steps that a sending terminal device determines a target frequency spectrum according to data characteristics of data, wherein the target frequency spectrum is a licensed frequency spectrum or an unlicensed frequency spectrum; and transmitting the side-link Sidelink data by using the target frequency spectrum. Therefore, when the transmitting terminal equipment needs to transmit the Sidelink data, whether the Sidelink data uses authorized spectrum transmission or unauthorized spectrum transmission can be determined according to the data characteristics of the data, and the applicability of the method can be improved.

Description

Data transmission method and device technical field

The present disclosure relates to the field of communication technologies, and in particular, to a data transmission method and device.

Background technique

At present, in order to support direct communication between the sending terminal device and the receiving terminal device, a sidelink (Sidelink) communication mode is introduced, wherein the communication interface between the sending terminal device and the receiving terminal device is a PC-5 interface. According to the corresponding relationship between the sending terminal device and the receiving terminal device, Sidelink supports three transmission methods, namely unicast, multicast and broadcast.

When the sending terminal device works in the licensed spectrum, the terminal device can perform Sidelink data transmission according to the configuration of the network device. In order to expand the available frequency, the sending terminal device can also perform Sidelink data transmission (Sidelink Unlicense) on the unlicensed (Unlicense) spectrum.

However, when there are licensed spectrum resources and unlicensed spectrum resources at the same time, when the sending terminal device has Sidelink data to send, which resource the sending terminal device chooses to use is a problem that needs to be solved.

Contents of the invention

The embodiment of the first aspect of the present disclosure provides a data transmission method, the method is executed by a sending terminal device, and the method includes: determining the target spectrum according to the data characteristics of the data, wherein the target spectrum is a licensed spectrum or an unlicensed frequency spectrum. Authorized spectrum; use the target spectrum to transmit Sidelink data.

In this technical solution, the sending terminal device determines the target spectrum according to the data characteristics of the data, wherein the target spectrum is a licensed spectrum or an unlicensed spectrum; the sidelink data is transmitted using the target spectrum. Therefore, when the sending terminal device needs to transmit Sidelink data, it can be determined whether the Sidelink data is transmitted using the licensed spectrum or the unlicensed spectrum according to the data characteristics of the data, which can improve the applicability of the method.

In a possible implementation manner, the determining the target frequency spectrum according to the data characteristic of the data includes: determining an identifier corresponding to the data characteristic of the data, where the identifier is used to indicate the data corresponding to the data characteristic The spectrum used for transmission is a licensed spectrum or an unlicensed spectrum; and the target spectrum is determined according to the identifier.

In a possible implementation manner, the data characteristic of the data includes the destination address corresponding to the Sidelink data, and the determining the identifier corresponding to the data characteristic of the data includes: obtaining the identifier corresponding to the destination address, wherein , an identifier corresponding to the destination address, used to indicate that the spectrum used by the destination address is a licensed spectrum or an unlicensed spectrum.

In a possible implementation manner, the destination address is a Layer 2 address of the receiving terminal device.

In a possible implementation manner, the data characteristic of the data includes a sidelink radio bearer corresponding to the Sidelink data, and the determining the identifier corresponding to the data characteristic of the data includes: acquiring the identifier corresponding to the sidelink radio bearer , wherein the identifier corresponding to the sidelink radio bearer is used to indicate that the spectrum used by the Sidelink data of the sidelink radio bearer is a licensed spectrum or an unlicensed spectrum.

In a possible implementation manner, the data characteristics of the data include the QoS Profile of the Sidelink data quality of service attribute set, and the determining the identifier corresponding to the data characteristics of the data includes: acquiring the QoS Profile corresponding to the QoS Profile An identifier, wherein the identifier corresponding to the QoS Profile is used to indicate that the spectrum used by the QoS Profile is a licensed spectrum or an unlicensed spectrum.

In a possible implementation manner, the QoS Profile is determined according to one of the following information: PC5 service quality identifier PQI; PC5 service quality flow identifier PFI; data transmission quality requirements.

In a possible implementation manner, the method further includes: preconfiguring the correspondence between the data characteristic of the data and the identifier; or; receiving a system message or a reconfiguration message sent by a network device, wherein the The corresponding relationship between the data characteristic of the data carried in the system message or the reconfiguration message and the identifier.

In a possible implementation manner, the correspondence between the data characteristics of the data and the identifier is configured in a list, and the list includes all data characteristics of data using authorized spectrum, which are not in the list The data characteristics of the data use the unlicensed spectrum, or, the list includes all the data characteristics of the data using the unlicensed spectrum, and the data characteristics of the data not in the list use the authorized spectrum.

In a possible implementation manner, the data characteristics of the data include a sidelink radio bearer corresponding to the Sidelink data, and a QoS Profile corresponding to the sidelink radio bearer, and the determining the target spectrum according to the data characteristics of the data includes : According to the QoS Profile corresponding to the sidelink radio bearer, determine the target frequency spectrum used by the data transmission corresponding to the sidelink radio bearer.

In a possible implementation manner, the determining the target spectrum used for data transmission corresponding to the sidelink radio bearer according to the QoS Profile corresponding to the sidelink radio bearer includes: responding to the QoS profile corresponding to the sidelink radio bearer At least one identifier corresponding to the QoS Profile indicates the use of the authorized spectrum, then determining that the target spectrum is the authorized spectrum; or, in response to the identifiers corresponding to all the QoS Profiles corresponding to the sidelink radio bearer indicating the use of the authorized spectrum, then It is determined that the target spectrum is an authorized spectrum.

In a possible implementation manner, the data characteristics of the data include the destination address corresponding to the Sidelink data and the QoS Profile corresponding to the destination address, and the determining the target spectrum according to the data characteristics of the data includes: responding All the identifiers corresponding to the QoS Profiles corresponding to the destination address indicate the use of authorized spectrum, then it is determined that the target spectrum used for the data transmission of the destination address is an authorized spectrum; or, in response to the At least one identifier corresponding to the QoS Profile indicates the use of authorized spectrum, then it is determined that the target spectrum used by the data transmission of the destination address is the authorized spectrum.

In a possible implementation manner, the method further includes: when the sending terminal device is in the connected state, reporting indication information to the network device, wherein the indication information is used to indicate the destination address corresponding to the Sidelink data The spectrum used, or used to indicate the spectrum used by the sidelink radio bearer corresponding to the Sidelink data.

In a possible implementation manner, the reporting the indication information to the network device when the terminal device is in the connected state includes: when the sending terminal device is in the connected state, sending the information to the network device through radio resource control RRC information. The network device reports the indication information.

In a possible implementation manner, the method further includes: receiving resources sent by the network device by scheduling the frequency spectrum indicated by the indication information.

In a possible implementation manner, the sending the Sidelink data by using the target spectrum includes: sending the Sidelink data by using radio resources of the target spectrum.

The embodiment of the second aspect of the present disclosure provides another data transmission method, the method is executed by a network device, including: receiving indication information reported by the sending terminal equipment, wherein the indication information is used to indicate the destination address corresponding to the Sidelink data The spectrum used, or used to indicate the spectrum used by the sidelink radio bearer corresponding to the Sidelink data.

In a possible implementation manner, the method further includes: scheduling the frequency spectrum indicated by the indication information, and sending resources to the sending terminal device.

The embodiment of the third aspect of the present disclosure provides yet another data transmission method, the method is executed by the receiving terminal device, including: receiving the Sidelink data sent by the sending terminal device, wherein the Sidelink data is the transmitted The terminal device determines a target spectrum according to the data characteristics of the data, and uses the target spectrum to send, and the target spectrum is a licensed spectrum or an unlicensed spectrum.

The embodiment of the fourth aspect of the present disclosure provides a data transmission device, the data transmission device has some or all functions of the sending terminal device in the method described in the first aspect above, for example, the function of the data transmission device can have the functions described in the present disclosure. The functions of some or all of the embodiments may also have the functions of independently implementing any one of the embodiments in the present disclosure. The functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. The hardware or software includes one or more units or modules corresponding to the above functions.

The embodiment of the fifth aspect of the present disclosure provides another data transmission device. The data transmission device has part or all of the functions of the network device in the method described in the second aspect above. For example, the functions of the data transmission device can have the The functions of some or all of the embodiments may also have the functions of independently implementing any one of the embodiments in the present disclosure. The functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. The hardware or software includes one or more units or modules corresponding to the above functions.

The embodiment of the sixth aspect of the present disclosure provides yet another data transmission device, which has some or all functions of the receiving terminal device in the method described in the third aspect above, for example, the functions of the data transmission device can have the functions of the present disclosure Some or all of the functions in the embodiments may also have the functions of independently implementing any one of the embodiments in the present disclosure. The functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. The hardware or software includes one or more units or modules corresponding to the above functions.

The embodiment of the seventh aspect of the present disclosure provides another data transmission device. The device includes a processor. When the processor calls the computer program in the memory, it executes the method described in the first aspect above, or executes the second method described above. The method described in the above aspect, or execute the method described in the third aspect above.

The embodiment of the eighth aspect of the present disclosure provides another data transmission device. The device includes a processor and a memory, and a computer program is stored in the memory. When the computer program is executed by the processor, the above-mentioned first The method described in the above aspect, or execute the method described in the second aspect above, or execute the method described in the third aspect above.

The embodiment of the ninth aspect of the present disclosure provides another data transmission device, the device includes a processor and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to The device is made to execute the method described in the first aspect above, or execute the method described in the second aspect above, or execute the method described in the third aspect above.

The embodiment of the tenth aspect of the present disclosure provides a communication system, the system includes the data transmission device described in the fourth aspect, or the system includes the data transmission device described in the fifth aspect, or the system includes the sixth aspect The data transmission device described above, or, the system includes the data transmission device described in the seventh aspect, or, the system includes the data transmission device described in the eighth aspect, or, the system includes the data transmission device described in the ninth aspect device.

The embodiment of the eleventh aspect of the present disclosure provides a computer-readable storage medium for storing instructions used by the above-mentioned sending terminal device. When the instructions are executed, the sending terminal device executes the above-mentioned first aspect. The method described above, or used to store instructions used by the above-mentioned network equipment, and when the instructions are executed, the network equipment executes the method described in the second aspect above, or used to store instructions for the above-mentioned receiving terminal equipment The used instruction, when the instruction is executed, causes the receiving terminal device to execute the method described in the third aspect above.

The embodiment of the twelfth aspect of the present disclosure provides a computer program product including a computer program, which, when run on a computer, causes the computer to execute the method described in the first aspect above, or causes the computer to execute the method described in the second aspect above The method described above, or make the computer execute the method described in the third aspect above.

The embodiment of the thirteenth aspect of the present disclosure provides a chip system, the chip system includes at least one processor and an interface, used to support the sending terminal device to implement the functions involved in the first aspect, or to support the network device to implement the first aspect The functions involved in the second aspect, or used to support the receiving terminal device to implement the functions involved in the third aspect, for example, determine or process at least one of the data and information involved in the above methods. In a possible design, the chip system further includes a memory, and the memory is used to store necessary computer programs and data of the sending terminal device, the network device or the receiving terminal device. The system-on-a-chip may consist of chips, or may include chips and other discrete devices.

The embodiment of the fourteenth aspect of the present disclosure provides a computer program that, when run on a computer, causes the computer to execute the method described in the first aspect above, or causes the computer to execute the method described in the second aspect above, or , so that the computer executes the method described in the third aspect above.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background art, the following will describe the drawings that need to be used in the embodiments of the present disclosure or the background art.

FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present disclosure;

FIG. 2 is a schematic flowchart of a data transmission method provided by an embodiment of the present disclosure;

FIG. 3 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure;

FIG. 4 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure;

FIG. 5 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure;

FIG. 6 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure;

FIG. 7 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure;

FIG. 8 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure;

FIG. 9 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure;

FIG. 10 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure;

FIG. 11 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure;

FIG. 12 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram of a data transmission device provided by an embodiment of the present disclosure;

FIG. 14 is a schematic structural diagram of another data transmission device provided by an embodiment of the present disclosure;

FIG. 15 is a schematic structural diagram of a chip provided by an embodiment of the present disclosure.

Detailed ways

In order to better understand a data transmission method disclosed in the embodiment of the present disclosure, the communication system to which the embodiment of the present disclosure is applicable is firstly described below.

In order to make the purpose, technical solution and advantages of the present disclosure clearer, the implementation manners of the present disclosure will be further described in detail below in conjunction with the accompanying drawings.

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numerals in different drawings indicate the same or similar elements. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present disclosure. The communication system may include, but is not limited to, a network device and a terminal device. The number and shape of the devices shown in Figure 1 are for example only and do not constitute a limitation to the embodiments of the present disclosure. In practical applications, two or more network equipment, two or more terminal equipment. The communication system shown in FIG. 1 only includes one network device 101 and one terminal device 102 as an example.

It should be noted that the technical solutions of the embodiments of the present disclosure may be applied to various communication systems. For example: long term evolution (long term evolution, LTE) system, fifth generation (5th generation, 5G) mobile communication system, 5G new radio (new radio, NR) system, or other future new mobile communication systems, etc.

The network device 101 in the embodiment of the present disclosure is an entity on the network side for transmitting or receiving signals. For example, the network device 101 may be an evolved base station (evolved NodeB, eNB), a transmission reception point (transmission reception point or transmit receive point, TRP), a next generation base station (next generation NodeB, gNB) in the NR system, or other future mobile A base station in a communication system or an access node in a wireless fidelity (wireless fidelity, WiFi) system, etc. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the network device. The network device provided by the embodiments of the present disclosure may be composed of a centralized unit (central unit, CU) and a distributed unit (distributed unit, DU), wherein the CU may also be called a control unit (control unit), and the CU-DU The structure of the network device, such as the protocol layer of the base station, can be separated, and the functions of some protocol layers are placed in the centralized control of the CU, and the remaining part or all of the functions of the protocol layer are distributed in the DU, and the CU centrally controls the DU.

The terminal device 102 in the embodiment of the present disclosure is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal equipment may also be called terminal equipment (terminal), user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal equipment (mobile terminal, MT) and so on. The terminal device can be a car with communication function, smart car, mobile phone, wearable device, tablet computer (Pad), computer with wireless transceiver function, virtual reality (virtual reality, VR) terminal device, augmented reality ( augmented reality (AR) terminal equipment, wireless terminal equipment in industrial control (industrial control), wireless terminal equipment in self-driving (self-driving), wireless terminal equipment in remote medical surgery (remote medical surgery), smart grid ( Wireless terminal devices in smart grid, wireless terminal devices in transportation safety, wireless terminal devices in smart city, wireless terminal devices in smart home, etc. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal device.

In the above communication system, in order to support the direct communication between the sending terminal device and the receiving terminal device, a sidelink (Sidelink) communication mode is introduced. According to the corresponding relationship between the sending terminal device and the receiving terminal device, Sidelink supports three transmission methods, namely unicast, multicast and broadcast.

Among them, in unicast, each terminal device corresponds to a destination identifier; in multicast, each terminal device can belong to one or more groups, and each group corresponds to a destination identifier; in broadcast, all terminals Each device corresponds to at least one destination identifier.

When the sending terminal device sends Sidelink data, it needs to address according to the destination address of the receiving terminal device and the source address of the sending terminal device. The application layer sends the layer 2 address corresponding to the source address and the layer 2 address corresponding to the destination address to the receiving terminal device. Entry layer, the length is 24 bits. Among them, the lower 8 bits of the layer 2 address corresponding to the source address are carried in SCI (system control information, system control information), and become the layer 1 address corresponding to the source address, and the remaining 16 bits are in MAC (media access control, media access control ) carried in the subheader. The lower 16 bits of the layer 2 address corresponding to the destination address are carried in the SCI to become the layer 1 address corresponding to the destination address, and the remaining 8 bits are carried in the MAC subheader.

Sidelink data with the same QoS (quality of service) requirements are mapped to different QoS flows (QoS flows), and one or more QoS flows can be mapped to a sidelink radio bearer, which is an access layer transmission the smallest granularity. Each QoS flow is identified by a PFI (PC5 QoS flow identifier, PC5 quality of service flow identifier). The QoS requirements of Sidelink data are specified by QoS Profile (Quality of Service Profile, quality of service attribute set), where QoS Profile can include transmission quality requirements such as transmission delay, data rate requirements, error rate, transmission priority, and maximum peak rate .

QoS Profiles include standardized QoS Profiles and non-standardized QoS Profiles. The transmission quality requirements corresponding to standardized QoS Profiles are defined in the protocol and identified and indexed by PQI (PC5QoS identifier, PC5 Quality of Service Identifier). Non-standardized QoS Profiles cannot be identified by PQI, and various transmission quality requirements need to be displayed and configured.

When the sending terminal device works in the licensed frequency spectrum, if the sending terminal device is connected to the network device, the sending terminal device can send Sidelink data according to the configuration of the network device. If the sending terminal device is not connected to a network device, the sending terminal device can send Sidelink data according to preconfiguration. Wherein, the foregoing pre-configuration includes available time-frequency resources, resource transmission modes, transmission power, and the like.

The sending terminal device in the connected state needs to send a sidelink terminal device message (i.e., a SidelinkUEInformation message) to the network device, wherein the SidelinkUEInformation message includes Sidelink sending resource request information, and the Sidelink sending resource request information is in the form of a list, each in the list The first element is the sidelink transmission characteristic of the receiving end-device communicating with the sending end-device. Wherein, the above-mentioned sidelink transmission characteristics may include the sidelink identifier of the receiving terminal device, corresponding transmission mode (including unicast, multicast and broadcast), QoS, and target transmission frequency.

In order to expand the available frequency, the sending terminal device can also perform Sidelink data transmission (Sidelink Unlicense) on the unlicensed (Unlicense) spectrum. When the sending terminal device sends Sidelink data on the unlicensed spectrum, mechanisms such as LBT (listen before talk, listen before talk) are required to avoid interference while taking into account the fairness between different devices.

However, when there are licensed spectrum resources and unlicensed spectrum resources at the same time, when the sending terminal device has Sidelink data to send, which resource the sending terminal device chooses to use is a problem that needs to be solved.

In view of the above problems, the present disclosure provides a data transmission method and device.

It can be understood that the communication system described in the embodiments of the present disclosure is to illustrate the technical solutions of the embodiments of the present disclosure more clearly, and does not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. With the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

The data transmission method and device provided by the present disclosure will be described in detail below with reference to the accompanying drawings.

Please refer to FIG. 2 . FIG. 2 is a schematic flowchart of a data transmission method provided by an embodiment of the present disclosure. The data transmission method may be performed by a terminal device in the communication system shown in FIG. 1 , specifically, it may be performed by a sending terminal device.

As shown in Figure 2, the data transmission method may include but not limited to the following steps:

Step 201: Determine a target spectrum according to data characteristics of the data, where the target spectrum is a licensed spectrum or an unlicensed spectrum.

In the embodiment of the present disclosure, the data characteristics may include the destination address corresponding to the Sidelink data to be transmitted, the QoS Profile corresponding to the destination address, the sidelink radio bearer corresponding to the Sidelink data, the QoS Profile corresponding to the sidelink radio bearer, and the QoS Profile corresponding to the Sidelink data At least one of the .

In the embodiments of the present disclosure, the licensed spectrum may also be called an unshared spectrum, and the unlicensed spectrum may also be called a shared spectrum.

In the embodiment of the present disclosure, the target spectrum may be determined according to data characteristics of the data, where the target spectrum may be a licensed spectrum, or the target spectrum may also be an unlicensed spectrum.

Step 202, using the target frequency spectrum to transmit Sidelink data.

In the embodiment of the present disclosure, the determined target spectrum can be used to transmit the Sidelink data, that is, the sending terminal device can use the target spectrum to send the Sidelink data to the receiving terminal device.

In the data transmission method of the embodiment of the present disclosure, the sending terminal device determines the target spectrum according to the data characteristics of the data, wherein the target spectrum is a licensed spectrum or an unlicensed spectrum; the sidelink data is transmitted using the target spectrum. Therefore, when the sending terminal device needs to transmit Sidelink data, it can be determined whether the Sidelink data is transmitted using the licensed spectrum or the unlicensed spectrum according to the data characteristics of the data, which can improve the applicability of the method.

Please refer to FIG. 3 . FIG. 3 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure. The data transmission method may be performed by a terminal device in the communication system shown in FIG. 1 , specifically, it may be performed by a sending terminal device. The data transmission method may be executed alone, or may be executed in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be executed in combination with any technical solution in related technologies.

As shown in Figure 3, the data transmission method may include but not limited to the following steps:

Step 301, determine an identifier corresponding to the data characteristic of the data, where the identifier is used to indicate that the spectrum used for data transmission corresponding to the data characteristic is a licensed spectrum or an unlicensed spectrum.

In this embodiment of the present disclosure, the data characteristic may correspond to an identifier, and the identifier is used to indicate whether the spectrum used for data transmission corresponding to the data characteristic is a licensed spectrum or an unlicensed spectrum.

In any embodiment of the present disclosure, the corresponding relationship between the data characteristics of the above data and the identification can be preconfigured by the sending terminal device, so that in the present disclosure, the identification corresponding to the data characteristics of the above data can be determined according to the preconfiguration .

In any embodiment of the present disclosure, the corresponding relationship between the data characteristics and the identification of the above data can be configured through the network device, for example, the network device can send the data characteristics and the identification of the above data through a system message or a reconfiguration message Correspondence between. That is, in this disclosure, the sending terminal device may receive a system message or a reconfiguration message sent by a network device, where the system message or the reconfiguration message carries the correspondence between the data characteristics of the data and the identifier, so that the system message or the reconfiguration message may Configure a message to determine the identifier corresponding to the data characteristic of the above data.

In any embodiment of the present disclosure, the correspondence between the data characteristics of the above data and the identifiers may be configured in a list, wherein the list may include all data characteristics of data using authorized spectrum, which are not located in the list The data characteristics of the data in the list use unlicensed spectrum, or the list may include all the data characteristics of the data using the unlicensed spectrum, and the data characteristics of the data not in the list use the authorized spectrum. Therefore, in the present disclosure, the identifier corresponding to the data characteristic of the above data may be determined according to the above list.

Step 302, determine the target frequency spectrum according to the identifier.

In the embodiment of the present disclosure, the target frequency spectrum may be determined according to the identifier corresponding to the data characteristic. For example, when the identifier corresponding to the data characteristic indicates that the spectrum used for data transmission corresponding to the data characteristic is a licensed spectrum, the target spectrum is a licensed spectrum. Alternatively, when the identifier corresponding to the data characteristic indicates that the spectrum used for data transmission corresponding to the data characteristic is an unlicensed spectrum, the target spectrum is an unlicensed spectrum.

As an example, the corresponding relationship between the data characteristics and the identification is configured in a list for illustration. It is assumed that the list includes all data characteristics using authorized spectrum. If the data characteristics of the above data are included in the list, The target spectrum is a licensed spectrum, and if the data characteristics of the above data are not included in the list, the target spectrum is an unlicensed spectrum. For another example, assuming that the list includes all data characteristics using unlicensed spectrum, if the data characteristics of the above data are included in the list, the target spectrum is an unlicensed spectrum, and if the data characteristics of the above data are not included in the list, Then the target spectrum is the licensed spectrum.

Step 303, using the target frequency spectrum to transmit Sidelink data.

In the embodiment of the present disclosure, the determined target frequency spectrum may be used to transmit Sidelink data.

In the data transmission method of the embodiment of the present disclosure, the sending terminal device determines the target spectrum according to the data characteristics of the data, wherein the target spectrum is a licensed spectrum or an unlicensed spectrum; the sidelink data is transmitted using the target spectrum. Therefore, when the sending terminal device needs to transmit Sidelink data, it can be determined whether the Sidelink data is transmitted using the licensed spectrum or the unlicensed spectrum according to the data characteristics of the data, which can improve the applicability of the method.

It should be noted that the foregoing possible implementation manners may be implemented individually or in combination, which is not limited in this embodiment of the present disclosure.

Please refer to FIG. 4 . FIG. 4 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure. The data transmission method may be performed by a terminal device in the communication system shown in FIG. 1 , specifically, it may be performed by a sending terminal device. The data transmission method may be executed alone, or may be executed in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be executed in combination with any technical solution in related technologies.

As shown in Figure 4, the data transmission method may include but not limited to the following steps:

Step 401, in response to the data characteristics of the data including the destination address corresponding to the Sidelink data, obtain an identifier corresponding to the destination address, where the identifier corresponding to the destination address is used to indicate that the spectrum used by the destination address is a licensed spectrum or an unlicensed spectrum.

In the embodiment of the present disclosure, the destination address is an address corresponding to the receiving terminal device. Optionally, the target address may be the Layer 2 address of the receiving terminal device.

In the embodiment of the present disclosure, when the data characteristics include the destination address corresponding to the Sidelink data to be transmitted, the identifier corresponding to the destination address can be obtained, and the identifier corresponding to the destination address is used to indicate that the frequency spectrum used by the destination address is Licensed or unlicensed spectrum. That is, in the present disclosure, the destination address may correspond to an identifier, and the identifier is used to indicate whether the spectrum used by the destination address is a licensed spectrum or an unlicensed spectrum.

In any embodiment of the present disclosure, the corresponding relationship between the destination address and the identifier may be preconfigured by the sending terminal device, so that in the present disclosure, the identifier corresponding to the above destination address may be determined according to the preconfiguration.

In any embodiment of the present disclosure, the above-mentioned corresponding relationship between the destination address and the identifier can be configured through the network device, for example, the network device can send the above-mentioned corresponding relationship between the destination address and the identifier through a system message or a reconfiguration message . That is, in this disclosure, the sending terminal device can receive a system message or a reconfiguration message sent by a network device, wherein the system message or the reconfiguration message carries the correspondence between the destination address and the identifier, so that the system message or the reconfiguration message can , to determine the identifier corresponding to the above destination address.

In any embodiment of the present disclosure, the correspondence between the above-mentioned destination addresses and identifiers may be configured in a list, wherein the list may include all destination addresses that use licensed spectrum, and destination addresses that are not in the list Use unlicensed spectrum, or, the list may include all destination addresses using unlicensed spectrum, and destination addresses not in the list use licensed spectrum. Therefore, in the present disclosure, the identifier corresponding to the above-mentioned destination address can be determined according to the above-mentioned list.

Step 402: Determine the target frequency spectrum according to the identifier corresponding to the destination address.

In the embodiment of the present disclosure, the target frequency spectrum may be determined according to the identifier corresponding to the destination address. For example, when the identifier corresponding to the destination address indicates that the spectrum used by the destination address is a licensed spectrum, the target spectrum is a licensed spectrum. Alternatively, when the identifier corresponding to the destination address indicates that the spectrum used by the destination address is an unlicensed spectrum, the target spectrum is an unlicensed spectrum.

As an example, the corresponding relationship between the destination address and the identifier is configured in a list for illustration. Assume that the list includes all destination addresses using authorized spectrum. If the above destination address is included in the list, the target spectrum is licensed spectrum, and if the above destination address is not included in the list, the target spectrum is an unlicensed spectrum. For another example, assuming that the list includes all destination addresses using unlicensed spectrum, if the above destination address is included in the list, the target spectrum is unlicensed spectrum, and if the above destination address is not included in the list, then the target spectrum is licensed spectrum.

Step 403, using the target frequency spectrum to transmit Sidelink data.

In the embodiment of the present disclosure, the determined target frequency spectrum may be used to transmit Sidelink data.

In the data transmission method of the embodiment of the present disclosure, the sending terminal device determines the target spectrum according to the data characteristics of the data, wherein the target spectrum is a licensed spectrum or an unlicensed spectrum; the sidelink data is transmitted using the target spectrum. Therefore, when the sending terminal device needs to transmit Sidelink data, it can be determined whether the Sidelink data is transmitted using the licensed spectrum or the unlicensed spectrum according to the data characteristics of the data, which can improve the applicability of the method.

It should be noted that the foregoing possible implementation manners may be implemented individually or in combination, which is not limited in this embodiment of the present disclosure.

Please refer to FIG. 5 . FIG. 5 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure. The data transmission method may be performed by a terminal device in the communication system shown in FIG. 1 , specifically, it may be performed by a sending terminal device. The data transmission method may be executed alone, or may be executed in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be executed in combination with any technical solution in related technologies.

As shown in Figure 5, the data transmission method may include but not limited to the following steps:

Step 501, in response to the data characteristics of the data including the sidelink radio bearer corresponding to the Sidelink data, obtain an identifier corresponding to the sidelink radio bearer, wherein the identifier corresponding to the sidelink radio bearer is used to indicate that the spectrum used by the Sidelink data of the sidelink radio bearer is a licensed spectrum or unlicensed spectrum.

In the embodiment of the present disclosure, when the data characteristics include the sidelink radio bearer corresponding to the Sidelink data to be transmitted, the identification corresponding to the sidelink radio bearer can be obtained, and the identification corresponding to the sidelink radio bearer is used to indicate the sidelink radio bearer Whether the spectrum used by Sidelink data is licensed or unlicensed. That is, in this disclosure, the sidelink radio bearer may correspond to an identifier, and the identifier is used to indicate whether the spectrum used by the Sidelink data of the sidelink radio bearer is a licensed spectrum or an unlicensed spectrum.

In any embodiment of the present disclosure, the sending terminal device may preconfigure the corresponding relationship between the sidelink radio bearer and the identifier, so that in the present disclosure, the identifier corresponding to the sidelink radio bearer may be determined according to the preconfiguration.

In any embodiment of the present disclosure, the above-mentioned correspondence between the sidelink radio bearer and the identity can be configured through the network device, for example, the network device can send the above-mentioned sidelink radio bearer and the identity through a system message or a reconfiguration message Correspondence. That is, in this disclosure, the sending terminal device can receive a system message or a reconfiguration message sent by a network device, wherein the system message or the reconfiguration message carries the correspondence between the sidelink radio bearer and the identity, so that the system message or the reconfiguration message can message to determine the identity corresponding to the sidelink radio bearer.

In any embodiment of the present disclosure, the above-mentioned correspondence between sidelink radio bearers and identities may be configured in a list, wherein the list may include all sidelink radio bearers using licensed spectrum, and those not in the list The sidelink radio bearers use unlicensed spectrum, or the list may include all sidelink radio bearers using unlicensed spectrum, and the sidelink radio bearers not in the list use licensed spectrum. Therefore, in the present disclosure, the identifier corresponding to the sidelink radio bearer may be determined according to the above list.

Step 502: Determine the target frequency spectrum according to the identifier corresponding to the sidelink radio bearer.

In the embodiment of the present disclosure, the target frequency spectrum may be determined according to the identifier corresponding to the sidelink radio bearer. For example, when the identifier corresponding to the sidelink radio bearer indicates that the spectrum used by the Sidelink data of the sidelink radio bearer is the licensed spectrum, the target spectrum is the licensed spectrum. Or, when the identifier corresponding to the sidelink radio bearer indicates that the spectrum used by the Sidelink data of the sidelink radio bearer is an unlicensed spectrum, the target spectrum is an unlicensed spectrum.

As an example, the corresponding relationship between sidelink radio bearers and identities is configured in a list for illustration. Assume that the list includes all sidelink radio bearers using licensed spectrum. If the above-mentioned sidelink radio bearers are included in the list, then The target spectrum is a licensed spectrum, and if the above-mentioned sidelink radio bearer is not included in the list, the target spectrum is an unlicensed spectrum. For another example, assuming that the list includes all sidelink radio bearers using unlicensed spectrum, if the above-mentioned sidelink radio bearers are included in the list, the target spectrum is unlicensed spectrum, and if the above-mentioned sidelink radio bearers are not included in the list, then The target spectrum is licensed spectrum.

Step 503, using the target frequency spectrum to transmit Sidelink data.

In the embodiment of the present disclosure, the determined target frequency spectrum may be used to transmit Sidelink data.

In the data transmission method of the embodiment of the present disclosure, the sending terminal device determines the target spectrum according to the data characteristics of the data, wherein the target spectrum is a licensed spectrum or an unlicensed spectrum; the sidelink data is transmitted using the target spectrum. Therefore, when the sending terminal device needs to transmit Sidelink data, it can be determined whether the Sidelink data is transmitted using the licensed spectrum or the unlicensed spectrum according to the data characteristics of the data, which can improve the applicability of the method.

It should be noted that the foregoing possible implementation manners may be implemented individually or in combination, which is not limited in this embodiment of the present disclosure.

Please refer to FIG. 6 . FIG. 6 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure. The data transmission method may be performed by a terminal device in the communication system shown in FIG. 1 , specifically, it may be performed by a sending terminal device. The data transmission method may be executed alone, or may be executed in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be executed in combination with any technical solution in related technologies.

As shown in Figure 6, the data transmission method may include but not limited to the following steps:

Step 601, in response to the data characteristics of the data including the QoS Profile of Sidelink data, obtain the identifier corresponding to the QoS Profile, where the identifier corresponding to the QoS Profile is used to indicate that the spectrum used by the QoS Profile is a licensed spectrum or an unlicensed spectrum.

In the embodiment of the present disclosure, when the data characteristics include the QoS Profile of the Sidelink data to be transmitted, the identification corresponding to the QoS Profile can be obtained, and the identification corresponding to the QoS Profile is used to indicate that the spectrum used by the QoS Profile is authorized Spectrum, or unlicensed spectrum. That is, in this disclosure, the QoS Profile may correspond to an identifier, and the identifier is used to indicate whether the spectrum used by the QoS Profile is a licensed spectrum or an unlicensed spectrum.

In any embodiment of the present disclosure, the QoS Profile may be determined according to one of the following information: PQI; PFI; data transmission quality requirements.

Wherein, the data transmission quality requirement may include transmission quality requirements such as transmission delay, data rate requirement, error rate, transmission priority, and maximum peak rate.

In any embodiment of the present disclosure, the corresponding relationship between the QoS Profile and the identifier can be pre-configured by the sending terminal device, so that in the present disclosure, the identifier corresponding to the above-mentioned QoS Profile can be determined according to the preconfiguration.

In any embodiment of the present disclosure, the above-mentioned correspondence between the QoS Profile and the identity can be configured through the network device, for example, the network device can send the above-mentioned correspondence between the QoS Profile and the identity through a system message or a reconfiguration message . That is, in this disclosure, the sending terminal device can receive a system message or a reconfiguration message sent by a network device, wherein the system message or the reconfiguration message carries the correspondence between the QoS Profile and the identifier, so that the system message or the reconfiguration message can , to determine the identifier corresponding to the aforementioned QoS Profile.

In any embodiment of the present disclosure, the correspondence between the above-mentioned QoS Profiles and identifiers may be configured in a list, wherein the list may include all QoS Profiles that use licensed spectrum, and the QoS Profiles that are not in the list Use unlicensed spectrum, or the list may include all QoS Profiles using unlicensed spectrum, and QoS Profiles not in the list use licensed spectrum. Therefore, in the present disclosure, the identifier corresponding to the above-mentioned QoS Profile can be determined according to the above-mentioned list.

Step 602: Determine the target spectrum according to the identifier corresponding to the QoS Profile.

In the embodiment of the present disclosure, the target frequency spectrum may be determined according to the identifier corresponding to the QoS Profile. For example, when the identifier corresponding to the QoS Profile indicates that the spectrum used by the QoS Profile is a licensed spectrum, the target spectrum is a licensed spectrum. Or, when the identifier corresponding to the QoS Profile indicates that the spectrum used by the QoS Profile is an unlicensed spectrum, the target spectrum is an unlicensed spectrum.

As an example, the corresponding relationship configuration between QoS Profile and identity is illustrated in a list, assuming that the list includes all QoS Profiles using licensed spectrum, if the above-mentioned QoS Profile is included in the list, the target spectrum is Licensed spectrum, and if the above-mentioned QoS Profile is not included in the list, the target spectrum is an unlicensed spectrum. For another example, assuming that the list includes all QoS Profiles using unlicensed spectrum, if the above-mentioned QoS Profile is included in the list, the target spectrum is unlicensed spectrum, and if the above-mentioned QoS Profile is not included in the list, then the target spectrum is licensed spectrum.

Step 603, using the target frequency spectrum to transmit Sidelink data.

In the embodiment of the present disclosure, the determined target frequency spectrum may be used to transmit Sidelink data.

In the data transmission method of the embodiment of the present disclosure, the sending terminal device determines the target spectrum according to the data characteristics of the data, wherein the target spectrum is a licensed spectrum or an unlicensed spectrum; the sidelink data is transmitted using the target spectrum. Therefore, when the sending terminal device needs to transmit Sidelink data, it can be determined whether the Sidelink data is transmitted using the licensed spectrum or the unlicensed spectrum according to the data characteristics of the data, which can improve the applicability of the method.

It should be noted that the foregoing possible implementation manners may be implemented individually or in combination, which is not limited in this embodiment of the present disclosure.

Please refer to FIG. 7 . FIG. 7 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure. The data transmission method may be performed by a terminal device in the communication system shown in FIG. 1 , specifically, it may be performed by a sending terminal device. The data transmission method may be executed alone, or may be executed in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be executed in combination with any technical solution in related technologies.

As shown in Figure 7, the data transmission method may include but not limited to the following steps:

Step 701: In response to the data characteristics of the data including the sidelink radio bearer corresponding to the Sidelink data and the QoS Profile corresponding to the sidelink radio bearer, determine the target spectrum used for data transmission corresponding to the sidelink radio bearer according to the QoS Profile corresponding to the sidelink radio bearer.

In the embodiment of the present disclosure, when the data characteristics of the data include the sidelink radio bearer corresponding to the Sidelink data to be transmitted and the QoS Profile corresponding to the sidelink radio bearer, the corresponding sidelink radio bearer can be determined according to the QoS Profile corresponding to the sidelink radio bearer. The target spectrum used for data transmission.

In any embodiment of the present disclosure, in a case where the identifier corresponding to at least one QoS Profile corresponding to the above-mentioned sidelink radio bearer indicates to use the authorized spectrum, it is determined that the target spectrum is the authorized spectrum.

In any one of the embodiments of the present disclosure, in a case where the identifiers corresponding to all the QoS Profiles corresponding to the sidelink radio bearer indicate to use the authorized spectrum, it is determined that the target spectrum is the authorized spectrum.

In any one of the embodiments of the present disclosure, in a case where the identifiers corresponding to all the QoS Profiles corresponding to the sidelink radio bearers indicate the use of unlicensed spectrum, it is determined that the target spectrum is the unlicensed spectrum.

Step 702, using the target frequency spectrum to transmit Sidelink data.

In the embodiment of the present disclosure, the determined target frequency spectrum may be used to transmit Sidelink data.

In the data transmission method of the embodiment of the present disclosure, the sending terminal device determines the target spectrum according to the data characteristics of the data, wherein the target spectrum is a licensed spectrum or an unlicensed spectrum; the sidelink data is transmitted using the target spectrum. Therefore, when the sending terminal device needs to transmit Sidelink data, it can be determined whether the Sidelink data is transmitted using the licensed spectrum or the unlicensed spectrum according to the data characteristics of the data, which can improve the applicability of the method.

It should be noted that the foregoing possible implementation manners may be implemented individually or in combination, which is not limited in this embodiment of the present disclosure.

Please refer to FIG. 8 . FIG. 8 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure. The data transmission method may be performed by a terminal device in the communication system shown in FIG. 1 , specifically, it may be performed by a sending terminal device. The data transmission method may be executed alone, or may be executed in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be executed in combination with any technical solution in related technologies.

As shown in Figure 8, the data transmission method may include but not limited to the following steps:

Step 801, in response to the data characteristics of the data including the destination address corresponding to the Sidelink data and the QoS Profile corresponding to the destination address, determine the target frequency spectrum used by the data transmission of the destination address according to the QoS Profile corresponding to the destination address.

In the embodiment of the present disclosure, when the data characteristics of the data include the destination address corresponding to the Sidelink data to be transmitted and the QoS Profile corresponding to the destination address, the data transmission of the destination address can be determined according to the QoS Profile corresponding to the destination address. target spectrum.

In any embodiment of the present disclosure, in a case where the identifier corresponding to at least one QoS Profile corresponding to the destination address indicates the use of authorized spectrum, it is determined that the target spectrum used for data transmission of the destination address is the licensed spectrum.

In any embodiment of the present disclosure, in the case where the identifiers corresponding to all QoS Profiles corresponding to the above destination address indicate the use of authorized spectrum, it is determined that the target spectrum used for data transmission of the destination address is the licensed spectrum.

In any embodiment of the present disclosure, in the case where the identifiers corresponding to all QoS Profiles corresponding to the destination address indicate the use of unlicensed spectrum, it is determined that the target spectrum used for data transmission of the destination address is an unlicensed spectrum.

Step 802, using the target frequency spectrum to transmit Sidelink data.

In the embodiment of the present disclosure, the determined target frequency spectrum may be used to transmit Sidelink data.

In the data transmission method of the embodiment of the present disclosure, the sending terminal device determines the target spectrum according to the data characteristics of the data, wherein the target spectrum is a licensed spectrum or an unlicensed spectrum; the sidelink data is transmitted using the target spectrum. Therefore, when the sending terminal device needs to transmit Sidelink data, it can be determined whether the Sidelink data is transmitted using the licensed spectrum or the unlicensed spectrum according to the data characteristics of the data, which can improve the applicability of the method.

It should be noted that the foregoing possible implementation manners may be implemented individually or in combination, which is not limited in this embodiment of the present disclosure.

Please refer to FIG. 9 . FIG. 9 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure. The data transmission method may be performed by a terminal device in the communication system shown in FIG. 1 , specifically, it may be performed by a sending terminal device. The data transmission method may be executed alone, or may be executed in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be executed in combination with any technical solution in related technologies.

As shown in Figure 9, the data transmission method may include but not limited to the following steps:

Step 901: When the sending terminal device is in the connected state, report indication information to the network device, wherein the indication information is used to indicate the spectrum used by the destination address corresponding to the Sidelink data, or used to indicate the frequency spectrum used by the sidelink radio bearer corresponding to the Sidelink data spectrum.

In this embodiment of the disclosure, when the sending terminal device is in the connected state, the sending terminal device may report indication information to the network device, the indication information is used to indicate the frequency spectrum used by the destination address corresponding to the Sidelink data, or to indicate the Sidelink Spectrum used by the sidelink radio bearer corresponding to the data.

In any embodiment of the present disclosure, when the sending terminal device is in the connected state, the sending terminal device may report indication information to the network device through RRC (radio resource control, radio resource control) information.

In any embodiment of the present disclosure, the sending terminal device may also receive resources sent by the network device by scheduling the frequency spectrum indicated by the above indication information.

As an example, when the indication information indicates that the spectrum used by the destination address corresponding to the Sidelink data is an unlicensed spectrum, or indicates that the spectrum used by the sidelink radio bearer corresponding to the Sidelink data is an unlicensed spectrum, the network device may schedule the unlicensed spectrum to send The terminal device sends the resource, and correspondingly, the sending terminal device can receive the resource sent by the network device by scheduling the unlicensed spectrum.

As another example, when the indication information indicates that the spectrum used by the destination address corresponding to the Sidelink data is a licensed spectrum, or indicates that the spectrum used by the sidelink radio bearer corresponding to the Sidelink data is a licensed spectrum, the network device may schedule the licensed spectrum to the sending terminal device For sending resources, correspondingly, the sending terminal device may receive the resources sent by the network device by scheduling the authorized frequency spectrum.

In the data transmission method of the embodiments of the present disclosure, when the sending terminal device is in the connected state, it reports indication information to the network device, wherein the indication information is used to indicate the frequency spectrum used by the destination address corresponding to the Sidelink data, or is used to indicate the sidelink data Spectrum used by the corresponding sidelink radio bearer. In this way, the indication information is reported to the network device, so that the network device can schedule the frequency spectrum indicated by the indication information, and send resources to the sending terminal device, which can improve the reliability of data transmission.

It should be noted that the foregoing possible implementation manners may be implemented individually or in combination, which is not limited in this embodiment of the present disclosure.

Please refer to FIG. 10 . FIG. 10 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure. The data transmission method may be performed by a terminal device in the communication system shown in FIG. 1 , specifically, it may be performed by a sending terminal device. The data transmission method may be executed alone, or may be executed in combination with any embodiment in the present disclosure or a possible implementation manner in the embodiment, and may also be executed in combination with any technical solution in related technologies.

As shown in Figure 10, the data transmission method may include but not limited to the following steps:

Step 1001: Determine a target spectrum according to data characteristics of the data, where the target spectrum is a licensed spectrum or an unlicensed spectrum.

In the embodiments of the present disclosure, step 1001 may be implemented in any one of the embodiments of the present disclosure, which is not limited in the embodiments of the present disclosure, and will not be repeated here.

Step 1002, using radio resources of the target spectrum to send Sidelink data.

In the embodiment of the present disclosure, after the target spectrum is determined, the determined radio resources of the target spectrum may be used to send Sidelink data. For example, the Sidelink data from the sidelink radio bearer may be sent through the radio resource of the target spectrum, or the Sidelink data may be sent to the destination address, or the Sidelink data corresponding to the QoS Profile may be transmitted.

In the data transmission method of the embodiment of the present disclosure, the sending terminal device determines the target spectrum according to the data characteristics of the data, wherein the target spectrum is a licensed spectrum or an unlicensed spectrum; the sidelink data is transmitted using the target spectrum. Therefore, when the sending terminal device needs to transmit Sidelink data, it can be determined whether the Sidelink data is transmitted using the licensed spectrum or the unlicensed spectrum according to the data characteristics of the data, which can improve the applicability of the method.

It should be noted that the foregoing possible implementation manners may be implemented individually or in combination, which is not limited in this embodiment of the present disclosure.

In any embodiment of the present disclosure, the sending terminal device may choose to use licensed spectrum or unlicensed spectrum to transmit Sidelink data according to data characteristics of the data.

As an example, the data characteristic includes a destination address corresponding to the Sidelink data, and an identifier corresponding to the destination address is used to indicate that the spectrum used by the Sidelink data sent to the destination address is an unlicensed spectrum or a licensed spectrum. Wherein, the destination address may be the layer 2 address of the receiving terminal device.

As another example, the data characteristic includes a sidelink radio bearer corresponding to the Sidelink data, and an identifier corresponding to the sidelink radio bearer is used to indicate that the Sidelink data from the sidelink radio bearer is sent, and the spectrum used is an unlicensed spectrum or a licensed spectrum.

As another example, the data characteristic includes a QoS Profile of the Sidelink data, and an identifier corresponding to the QoS Profile, which is used to indicate that the spectrum used by the QoS Profile is a licensed spectrum or an unlicensed spectrum.

Among them, the QoS Profile can be referred to by PQI, PFI or data transmission quality requirements.

As another example, the data characteristic includes a sidelink radio bearer corresponding to the Sidelink data, and in response to the identifiers corresponding to all QoS Profiles corresponding to the sidelink radio bearer indicating the use of authorized spectrum, then determining the transmission of the Sidelink data from the sidelink radio bearer, The spectrum used is licensed spectrum.

As yet another example, the data characteristic includes a sidelink radio bearer corresponding to the Sidelink data, and in response to an identifier corresponding to at least one QoS Profile corresponding to the sidelink radio bearer indicating the use of an authorized spectrum, then determining the transmission of the Sidelink data from the sidelink radio bearer, The spectrum used is licensed spectrum.

As another example, the data characteristic includes the destination address corresponding to the Sidelink data, and in response to the identifiers corresponding to all the QoS Profiles corresponding to the destination address indicating the use of authorized spectrum, it is determined that the spectrum used for data transmission of the destination address is the licensed spectrum.

As yet another example, the data characteristics include a destination address corresponding to the Sidelink data, and in response to an identifier corresponding to at least one QoS Profile corresponding to the destination address indicating the use of an authorized spectrum, determine that the spectrum used for data transmission at the destination address is an authorized spectrum.

In any embodiment of the present disclosure, when the sending terminal device is in the connected state, the sending terminal device may report the destination address or the spectrum (licensed spectrum or unlicensed spectrum) used by the sidelink radio bearer to the network device.

As an example, the destination address or the frequency spectrum used by the sidelink radio bearer may be carried in an RRC message.

In any embodiment of the present disclosure, after receiving the information reported by the sending terminal device, the network device may choose to schedule the authorized spectrum or the unlicensed spectrum transmission resource. For example, when the spectrum used by the destination address or the sidelink radio bearer is an unlicensed spectrum, the network device can schedule unlicensed spectrum transmission resources, or, when the spectrum used by the destination address or the sidelink radio bearer is a licensed spectrum, the network device can Scheduling authorized spectrum transmission resources.

Please refer to FIG. 11 . FIG. 11 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure. The data transmission method can be executed by a network device in the communication system shown in FIG. 1 .

As shown in Figure 11, the data transmission method may include but not limited to the following steps:

Step 1101, receiving indication information reported by the sending terminal device, wherein the indication information is used to indicate the frequency spectrum used by the destination address corresponding to the Sidelink data, or used to indicate the frequency spectrum used by the sidelink radio bearer corresponding to the Sidelink data.

In this embodiment of the present disclosure, the sending terminal device may report indication information to the network device, where the indication information is used to indicate the frequency spectrum used by the destination address corresponding to the Sidelink data, or used to indicate the frequency spectrum used by the sidelink radio bearer corresponding to the Sidelink data. Correspondingly, the network device may receive the indication information reported by the sending terminal device.

In any embodiment of the present disclosure, the network device may schedule the frequency spectrum indicated by the indication information according to the indication information, and send resources to the sending terminal device.

As an example, when the indication information indicates that the spectrum used by the destination address corresponding to the Sidelink data is an unlicensed spectrum, or indicates that the spectrum used by the sidelink radio bearer corresponding to the Sidelink data is an unlicensed spectrum, the network device may schedule the unlicensed spectrum to send The terminal device sends the resource, and correspondingly, the sending terminal device can receive the resource sent by the network device by scheduling the unlicensed spectrum.

As another example, when the indication information indicates that the spectrum used by the destination address corresponding to the Sidelink data is a licensed spectrum, or indicates that the spectrum used by the sidelink radio bearer corresponding to the Sidelink data is a licensed spectrum, the network device may schedule the licensed spectrum to the sending terminal device For sending resources, correspondingly, the sending terminal device may receive the resources sent by the network device by scheduling the authorized frequency spectrum.

It should be noted that the explanations of the data transmission method performed by the sending terminal device in any of the foregoing embodiments are also applicable to the data transmission method performed by the network device, and the implementation principles thereof are similar, so details are not repeated here.

In the data transmission method of the embodiment of the present disclosure, the network device receives and sends the instruction information reported by the terminal device, where the instruction information is used to indicate the frequency spectrum used by the destination address corresponding to the Sidelink data, or used to indicate the sidelink radio bearer corresponding to the Sidelink data spectrum used. Therefore, by reporting the indication information to the network device through the sending terminal device, the network device can schedule the frequency spectrum indicated by the indication information and send resources to the sending terminal device, thereby improving the reliability of data transmission.

It should be noted that the foregoing possible implementation manners may be implemented individually or in combination, which is not limited in this embodiment of the present disclosure.

Please refer to FIG. 12 . FIG. 12 is a schematic flowchart of another data transmission method provided by an embodiment of the present disclosure. The data transmission method may be executed by a terminal device in the communication system shown in FIG. 1 , and specifically may be executed by a receiving terminal device.

As shown in Figure 12, the data transmission method may include but not limited to the following steps:

Step 1201, receiving Sidelink data sent by the sending terminal device, wherein the Sidelink data is sent by the sending terminal device after determining a target spectrum according to data characteristics of the data, using the target spectrum, and the target spectrum is a licensed spectrum or an unlicensed spectrum.

In the embodiment of the present disclosure, the sending terminal device can determine the target spectrum according to the data characteristics of the data, and use the target spectrum to send Sidelink data to the receiving terminal device. Correspondingly, the receiving terminal device can receive the Sidelink data sent by the sending terminal device.

It should be noted that the explanations of the data transmission method performed by the sending terminal device in any of the foregoing embodiments are also applicable to the data transmission method performed by the receiving terminal device, and the implementation principles thereof are similar, so details are not repeated here.

In the data transmission method of the embodiment of the present disclosure, the receiving terminal device receives the Sidelink data sent by the sending terminal device, wherein, the Sidelink data is determined by the sending terminal device according to the data characteristics of the data, and sent using the target spectrum, and the target spectrum is authorized spectrum or unlicensed spectrum. Therefore, when the sending terminal device needs to transmit Sidelink data, it can be determined whether the Sidelink data is transmitted using the licensed spectrum or the unlicensed spectrum according to the data characteristics of the data, which can improve the applicability of the method.

In the above embodiments provided in the present disclosure, the methods provided in the embodiments of the present disclosure are introduced from the perspectives of terminal devices and network devices. In order to implement the various functions in the method provided by the above embodiments of the present disclosure, the terminal device and the network device may include a hardware structure and a software module, and implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. A certain function among the above-mentioned functions may be implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module.

Please refer to FIG. 13 , which is a schematic structural diagram of a data transmission device 130 provided by an embodiment of the present disclosure. The data transmission device 130 shown in FIG. 13 may include a processing unit 1301 and a transceiver unit 1302 . The transceiver unit 1302 may include a sending unit and/or a receiving unit, the sending unit is used to implement a sending function, the receiving unit is used to implement a receiving function, and the transceiver unit may implement a sending function and/or a receiving function.

The data transmission device 130 may be a terminal device, or a device in the terminal device, or a device that can be used in conjunction with the terminal device, or the data transmission device 130 may be a network device, or a device in the network device, It can also be a device that can be matched with network equipment.

When the data transmission apparatus 130 is a terminal device: the processing unit 1301 is configured to determine a target spectrum according to data characteristics of the data, where the target spectrum is a licensed spectrum or an unlicensed spectrum.

The transceiver unit 1302 is configured to transmit Sidelink data by using the target frequency spectrum.

In some embodiments, the processing unit 1301 is specifically configured to determine the identifier corresponding to the data characteristic of the data, wherein the identifier is used to indicate that the spectrum used for data transmission corresponding to the data characteristic is a licensed spectrum or an unlicensed spectrum; determine the target according to the identifier spectrum.

In some embodiments, the data characteristics of the data include the destination address corresponding to the Sidelink data, and the processing unit 1301 is specifically configured to obtain an identifier corresponding to the destination address, wherein the identifier corresponding to the destination address is used to indicate that the frequency spectrum used by the destination address is authorized spectrum or unlicensed spectrum.

In some embodiments, the destination address is the Layer 2 address of the receiving terminal device.

In some embodiments, the data characteristics of the data include the sidelink radio bearer corresponding to the Sidelink data, and the processing unit 1301 is specifically configured to obtain an identifier corresponding to the sidelink radio bearer, where the identifier corresponding to the sidelink radio bearer is used to indicate the sidelink radio bearer The spectrum used by Sidelink data is licensed or unlicensed.

In some embodiments, the data characteristics of the data include the QoS Profile of the Sidelink data, and the processing unit 1301 is specifically configured to obtain an identifier corresponding to the QoS Profile, wherein the identifier corresponding to the QoS Profile is used to indicate that the spectrum used by the QoS Profile is a licensed spectrum or unlicensed spectrum.

In some embodiments, the QoS Profile is determined according to one of the following information: PQI; PFI; data transmission quality requirements.

In some embodiments, the processing unit 1301 is further configured to preconfigure a correspondence between data characteristics and identifiers of the data.

The transceiver unit 1302 is further configured to receive a system message or a reconfiguration message sent by a network device, wherein the system message or the reconfiguration message carries a correspondence between data characteristics and identifiers of data.

In some embodiments, the correspondence between the data characteristics of the data and the identifiers is configured in a list, the list includes all the data characteristics of the data using the authorized spectrum, and the data characteristics of the data not in the list use the unlicensed spectrum, or , the list includes all the data characteristics of the data using the unlicensed spectrum, and the data characteristics of the data not in the list use the authorized spectrum.

In some embodiments, the data characteristics of the data include the sidelink radio bearer corresponding to the Sidelink data, and the QoS Profile corresponding to the sidelink radio bearer. The processing unit 1301 is specifically configured to determine the sidelink radio bearer corresponding to the sidelink radio bearer according to the QoS Profile corresponding to the sidelink radio bearer. Spectrum of interest for data transmission

In some embodiments, the processing unit 1301 is specifically configured to determine that the target spectrum is the licensed spectrum in response to an identifier corresponding to at least one QoS Profile corresponding to the sidelink radio bearer indicating to use the licensed spectrum; or, in response to all QoS profiles corresponding to the sidelink radio bearer The identifiers corresponding to the QoS Profile all indicate to use the licensed spectrum, and it is determined that the target spectrum is the licensed spectrum.

In some embodiments, the data characteristics of the data include the destination address corresponding to the Sidelink data, and the QoS Profile corresponding to the destination address, and the processing unit 1301 is specifically configured to respond to the identifiers corresponding to all the QoS Profiles corresponding to the destination address indicating the use of authorized spectrum , then it is determined that the target spectrum used by the data transmission of the destination address is an authorized spectrum; or, in response to the identification corresponding to at least one QoS Profile corresponding to the target address indicating that the authorized spectrum is used, then it is determined that the target spectrum used by the data transmission of the destination address is an authorized spectrum .

In some embodiments, the transceiver unit 1302 is further configured to report indication information to the network device when the sending terminal device is in the connected state, where the indication information is used to indicate the frequency spectrum used by the destination address corresponding to the Sidelink data, or for Indicates the frequency spectrum used by the sidelink radio bearer corresponding to the sidelink data.

In some embodiments, the transceiving unit 1302 is specifically configured to report indication information to the network device through RRC information when the sending terminal device is in a connected state.

In some embodiments, the transceiving unit 1302 is further configured to receive resources sent by the network device through the frequency spectrum indicated by the scheduling indication information.

In some embodiments, the transceiving unit 1302 is specifically configured to use radio resources of the target spectrum to send Sidelink data.

In some embodiments, the transceiver unit 1302 is configured to receive Sidelink data sent by the sending terminal device, wherein the Sidelink data is sent by the sending terminal device using the target spectrum after determining the target spectrum according to the data characteristics of the data. The spectrum is a licensed spectrum or an unlicensed spectrum.

When the data transmission device 130 is a network device: the transceiver unit 1302 is configured to receive indication information reported by the sending terminal equipment, wherein the indication information is used to indicate the frequency spectrum used by the destination address corresponding to the Sidelink data, or to indicate that the Sidelink data corresponds to Spectrum used by sidelink radio bearers.

The transceiving unit 1302 is further configured to schedule the frequency spectrum indicated by the instruction information, and send resources to the sending terminal device.

It should be noted that the explanation of the method executed on the sending terminal device side in any of the above-mentioned embodiments in Figure 2 to Figure 10, or the explanation of the method executed on the network device side in the above-mentioned embodiment in Figure 11, or the above-mentioned The explanation of the method executed by the receiving terminal device side in the embodiment in FIG. 12 is also applicable to the data transmission device 130 in this embodiment, and its implementation principle is similar, so details are not repeated here.

Please refer to FIG. 14 . FIG. 14 is a schematic structural diagram of another data transmission device provided by an embodiment of the present disclosure. The data transmission device 140 may be a terminal device (including a sending terminal device and a receiving terminal device) or a network device, and may also be a chip, a chip system, or a processor that supports the terminal device or network device to implement the above method. The device can be used to implement the methods described in the above method embodiments, and for details, refer to the descriptions in the above method embodiments.

The data transmission device 140 may include one or more processors 1401 . The processor 1401 may be a general-purpose processor or a special-purpose processor. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processor can be used to control data transmission devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.), and execute computer Programs, which process data for computer programs.

Optionally, the data transmission device 140 may further include one or more memories 1402, on which a computer program 1403 may be stored, and the processor 1401 executes the computer program 1403, so that the data transmission device 140 executes the method described in the foregoing method embodiments. method. The computer program 1403 may be solidified in the processor 1401, and in this case, the processor 1401 may be implemented by hardware.

Optionally, data may also be stored in the memory 1402 . The data transmission device 140 and the memory 1402 can be set separately or integrated together.

Optionally, the data transmission device 140 may further include a transceiver 1405 and an antenna 1406 . The transceiver 1405 may be called a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement a transceiver function. The transceiver 1405 may include a receiver and a transmitter, and the receiver may be called a receiver or a receiving circuit for realizing a receiving function; the transmitter may be called a transmitter or a sending circuit for realizing a sending function.

Optionally, the data transmission device 140 may further include one or more interface circuits 14014 . The interface circuit 14014 is used to receive code instructions and transmit them to the processor 1401 . The processor 1401 runs code instructions to enable the data transmission device 140 to execute the methods described in the foregoing method embodiments.

The data transmission device 140 is a terminal device: a processor 1401, configured to execute any one of the method embodiments in FIG. 2 to FIG. 10 of the present disclosure, or execute the method embodiment shown in FIG. 12 of the present disclosure.

The data transmission device 140 is a network device: a processor 1401 configured to execute the method embodiment shown in FIG. 11 above in the present disclosure.

It should be noted that the explanations of the data transmission method in any of the above-mentioned embodiments in FIG. 2 to FIG. 12 are also applicable to the data transmission device 140 in this embodiment, and its implementation principles are similar, so details are not repeated here.

In an implementation manner, the processor 1401 may include a transceiver for implementing receiving and sending functions. For example, the transceiver may be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuits, interfaces or interface circuits for realizing the functions of receiving and sending can be separated or integrated together. The above-mentioned transceiver circuit, interface or interface circuit may be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface or interface circuit may be used for signal transmission or transfer.

In an implementation manner, the data transmission device 140 may include a circuit, and the circuit may implement the function of sending or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in this disclosure can be implemented on integrated circuits (integrated circuits, ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board, PCB), electronic equipment, etc. The processor and transceiver can also be fabricated using various IC process technologies such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), p-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The data transmission device described in the above embodiments may be a terminal device or a network device, but the scope of the data transmission device described in this disclosure is not limited thereto, and the structure of the data transmission device may not be limited by FIG. 14 . The data transmission means may be a stand-alone device or may be part of a larger device. Examples of data transfer devices could be:

(1) Stand-alone integrated circuits ICs, or chips, or chip systems or subsystems;

(2) A set of one or more ICs, optionally, the set of ICs may also include storage components for storing data and computer programs;

(3) ASIC, such as modem (Modem);

(4) Modules that can be embedded in other devices;

(5) Receivers, terminal equipment, intelligent terminal equipment, cellular phones, wireless equipment, handsets, mobile units, vehicle equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.;

(6) Others and so on.

For the case where the data transmission device may be a chip or a chip system, refer to the schematic structural diagram of the chip shown in FIG. 15 . The chip shown in FIG. 15 includes a processor 1501 and an interface 1502 . Wherein, the number of processors 1501 may be one or more, and the number of interfaces 1502 may be more than one.

For the case where the chip is used to implement the functions of the terminal device in the embodiments of the present disclosure:

Interface 1502, used to transmit code instructions to the processor;

The processor 1501 is configured to execute code instructions to execute the method shown in any one of the embodiments in FIG. 2 to FIG. 10 , or to execute the method shown in FIG. 12 .

For the case where the chip is used to implement the functions of the network device in the embodiments of the present disclosure:

Interface 1502, used to transmit code instructions to the processor;

The processor 1501 is configured to run code instructions to execute the method shown in the embodiment of FIG. 11 .

Optionally, the chip further includes a memory 1503 for storing necessary computer programs and data.

It should be noted that the explanations of the data transmission method in any of the above-mentioned embodiments in FIG. 2 to FIG. 12 are also applicable to the chip in this embodiment, and its implementation principles are similar, so details are not repeated here.

Those skilled in the art can also understand that various illustrative logical blocks and steps listed in the embodiments of the present disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such functions are implemented by hardware or software depends on the specific application and overall system design requirements. Those skilled in the art may use various methods to implement functions for each specific application, but such implementation should not be understood as exceeding the protection scope of the embodiments of the present disclosure.

The embodiment of the present disclosure also provides a communication system, the system includes the data transmission device as the terminal device or the network device in the aforementioned embodiment of Figure 14, or, the system includes the data transmission device as the terminal device or the network device in the aforementioned embodiment of Figure 15 transmission device.

The present disclosure also provides a readable storage medium on which instructions are stored, and when the instructions are executed by a computer, the functions of any one of the above method embodiments are realized.

The present disclosure also provides a computer program product, which implements the functions of any one of the above method embodiments when executed by a computer.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer programs. When the computer program is loaded and executed on the computer, all or part of the processes or functions according to the embodiments of the present disclosure will be generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer program can be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program can be downloaded from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk (solid state disk, SSD)) etc.

Those of ordinary skill in the art can understand that the first, second, and other numbers involved in the present disclosure are only for convenience of description, and are not used to limit the scope of the embodiments of the present disclosure, and also indicate the sequence.

At least one in the present disclosure can also be described as one or more, and a plurality can be two, three, four or more, and the present disclosure is not limited. In the embodiments of the present disclosure, for a technical feature, the technical feature is distinguished by "first", "second", "third", "A", "B", "C" and "D", etc. The technical features described in the "first", "second", "third", "A", "B", "C" and "D" have no sequence or order of magnitude among the technical features described.

It can be understood that "plurality" in the present disclosure refers to two or more, and other quantifiers are similar. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The character "/" generally indicates that the contextual objects are an "or" relationship. The singular forms "a", "said" and "the" are also intended to include the plural unless the context clearly dictates otherwise.

As used herein, the word "if" may be construed as "at" or "when" or "in response to a determination."

The correspondence shown in each table in the present disclosure may be configured or predefined. The values of the information in each table are just examples, and may be configured as other values, which are not limited in the present disclosure. When configuring the corresponding relationship between the information and each parameter, it is not necessarily required to configure all the corresponding relationships shown in the tables. For example, in the table in the present disclosure, the corresponding relationship shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, for example, splitting, merging, and so on. The names of the parameters shown in the titles of the above tables may also adopt other names understandable by the communication device, and the values or representations of the parameters may also be other values or representations understandable by the communication device. When the above tables are implemented, other data structures can also be used, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables can be used wait.

Predefinition in the present disclosure can be understood as definition, predefinition, storage, prestorage, prenegotiation, preconfiguration, curing, or prefiring.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementation should not be considered beyond the scope of the present disclosure.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

The above is only a specific implementation of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope of the present disclosure. should fall within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be determined by the protection scope of the claims.

Claims (25)

1. A data transmission method, the method being performed by a transmitting terminal device, comprising:

   determining a target frequency spectrum according to the data characteristics of the data, wherein the target frequency spectrum is a licensed frequency spectrum or an unlicensed frequency spectrum;

   and transmitting side-link Sidelink data by using the target frequency spectrum.
2. The method of claim 1, wherein determining the target spectrum based on the data characteristics of the data comprises:

   determining an identifier corresponding to the data characteristic of the data, wherein the identifier is used for indicating that a frequency spectrum used by data transmission corresponding to the data characteristic is a licensed frequency spectrum or an unlicensed frequency spectrum;

   and determining the target frequency spectrum according to the identification.
3. The method according to claim 2, wherein the data characteristic of the data includes a destination address corresponding to the sidlink data, and the determining the identifier corresponding to the data characteristic of the data includes:

   and acquiring an identifier corresponding to the destination address, wherein the identifier corresponding to the destination address is used for indicating that a frequency spectrum used by the destination address is an authorized frequency spectrum or an unlicensed frequency spectrum.
4. A method according to claim 3, characterized in that the destination address is a layer 2 address of the receiving terminal device.
5. The method of claim 2, wherein the data characteristic of the data includes a Sidelink radio bearer corresponding to the Sidelink data, and the determining the identifier corresponding to the data characteristic of the data includes:

   and acquiring an identifier corresponding to the Sidelink radio bearer, wherein the identifier corresponding to the Sidelink radio bearer is used for indicating whether a frequency spectrum used by the Sidelink data of the Sidelink radio bearer is an authorized frequency spectrum or an unlicensed frequency spectrum.
6. The method according to claim 2, wherein the data characteristics of the data include a QoS Profile of the sip data, and the determining the identifier corresponding to the data characteristics of the data includes:

   and acquiring the identifier corresponding to the QoS Profile, wherein the identifier corresponding to the QoS Profile is used for indicating that the frequency spectrum used by the QoS Profile is a licensed frequency spectrum or an unlicensed frequency spectrum.
7. The method of claim 6, wherein the QoS Profile is determined based on one of the following information:

   the PC5 quality of service identity PQI;

   PC5 quality of service flow identity PFI;

   data transmission quality requirements.
8. The method according to any one of claims 2-7, further comprising:

   Pre-configuring the corresponding relation between the data characteristics of the data and the identification;

   or alternatively;

   and receiving a system message or a reconfiguration message sent by the network equipment, wherein the system message or the reconfiguration message carries the corresponding relation between the data characteristics of the data and the identification.
9. The method according to any one of claims 2-7, wherein the correspondence between the data properties of the data and the identification is configured in a list, wherein the list comprises data properties of all data using licensed spectrum, wherein the data properties of data not located in the list use unlicensed spectrum, or wherein the list comprises data properties of all data using unlicensed spectrum, wherein the data properties of data not located in the list use licensed spectrum.
10. The method of claim 1, wherein the data characteristics of the data include a Sidelink radio bearer corresponding to the Sidelink data and a QoS Profile corresponding to the Sidelink radio bearer, and wherein determining the target spectrum according to the data characteristics of the data comprises:

    and determining the target frequency spectrum used by the data transmission corresponding to the sidelink wireless bearing according to the QoS Profile corresponding to the sidelink wireless bearing.
11. The method of claim 10, wherein the determining the target spectrum used for data transmission corresponding to the sidelink radio bearer according to the QoS Profile corresponding to the sidelink radio bearer comprises:

    determining that the target spectrum is a licensed spectrum if at least one identifier corresponding to the QoS Profile corresponding to the sidelink radio bearer indicates that the licensed spectrum is used;

    or,

    and determining that the target spectrum is a licensed spectrum if all the identifiers corresponding to the QoS Profile corresponding to the sidelink radio bearer indicate to use the licensed spectrum.
12. The method of claim 1, wherein the data characteristics of the data include a destination address corresponding to the sip link data and a QoS Profile corresponding to the destination address, and wherein determining the target spectrum according to the data characteristics of the data includes:

    determining that the target spectrum used by the data transmission of the destination address is a licensed spectrum if all the identifiers corresponding to the QoS Profile corresponding to the destination address indicate the use of the licensed spectrum;

    or,

    and determining that the target spectrum used by the data transmission of the destination address is a licensed spectrum if the identification corresponding to at least one QoS Profile corresponding to the destination address indicates that the licensed spectrum is used.
13. The method according to any one of claims 1-12, further comprising:

    and when the sending terminal equipment is in a connection state, reporting indication information to network equipment, wherein the indication information is used for indicating a frequency spectrum used by a destination address corresponding to the Sidelink data or a frequency spectrum used by a Sidelink radio bearer corresponding to the Sidelink data.
14. The method according to claim 13, wherein reporting the indication information to the network device when the terminal device is in the connected state includes:

    and when the sending terminal equipment is in a connection state, reporting the indication information to the network equipment through Radio Resource Control (RRC) information.
15. The method according to claim 13 or 14, wherein the method further comprises:

    and receiving the resource sent by the network equipment through the frequency spectrum indicated by the scheduling indication information.
16. The method according to any one of claims 1-15, wherein the transmitting side-link-profile data using the target spectrum comprises:

    and transmitting the Sidelink data by using the wireless resource of the target frequency spectrum.
17. A method of data transmission, the method performed by a network device, comprising:

    and receiving indication information reported by a sending terminal device, wherein the indication information is used for indicating a frequency spectrum used by a destination address corresponding to the Sidelink data or a frequency spectrum used by a Sidelink radio bearer corresponding to the Sidelink data.
18. The method of claim 17, wherein the method further comprises:

    and scheduling the frequency spectrum indicated by the indication information and sending resources to the sending terminal equipment.
19. A data transmission method, the method being performed by a receiving terminal device, comprising:

    and receiving side-link data transmitted by a transmitting terminal device, wherein the side-link data is transmitted by the transmitting terminal device by using a target frequency spectrum determined according to the data characteristics of the data, and the target frequency spectrum is an authorized frequency spectrum or an unlicensed frequency spectrum.
20. A data transmission apparatus, characterized in that the apparatus is applied to a transmitting terminal device, comprising:

    the processing unit is used for determining a target frequency spectrum according to the data characteristics of the data, wherein the target frequency spectrum is a licensed frequency spectrum or an unlicensed frequency spectrum;

    And the receiving and transmitting unit is used for transmitting the side-link Sidelink data by using the target frequency spectrum.
21. A data transmission apparatus, the apparatus being applied to a network device, comprising:

    and the receiving and transmitting unit is used for receiving indication information reported by the sending terminal equipment, wherein the indication information is used for indicating a frequency spectrum used by a destination address corresponding to the Sidelink data or a frequency spectrum used by a Sidelink radio bearer corresponding to the Sidelink data.
22. A data transmission apparatus, the apparatus being applied to a receiving terminal device, comprising:

    the transmitting and receiving unit is used for receiving side-link data transmitted by the transmitting terminal equipment, wherein the side-link data is obtained by determining a target frequency spectrum according to the data characteristics of the data by the transmitting terminal equipment, and the target frequency spectrum is transmitted by using the target frequency spectrum, and is an authorized frequency spectrum or an unlicensed frequency spectrum.
23. A data transmission apparatus comprising a processor and a memory in which a computer program is stored which, when executed by the processor, performs the method of any one of claims 1 to 16, or performs the method of claim 17 or 18, or performs the method of claim 19.
24. A data transmission apparatus, comprising: a processor and interface circuit;

    the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor;

    the processor being configured to execute the code instructions to perform the method of any one of claims 1 to 16, or to perform the method of claim 17 or 18, or to perform the method of claim 19.
25. A computer readable storage medium storing instructions which, when executed, cause the method of any one of claims 1 to 16 to be carried out, or perform the method of claim 17 or 18, or perform the method of claim 19.