WO2019007184A1

WO2019007184A1 - Data transmission method and device

Info

Publication number: WO2019007184A1
Application number: PCT/CN2018/090011
Authority: WO
Inventors: 赵锐; 赵丽; 李晨鑫; 房家奕; 彭莹
Original assignee: 电信科学技术研究院有限公司
Priority date: 2017-07-06
Filing date: 2018-06-05
Publication date: 2019-01-10
Also published as: CN109428692B; CN109428692A

Abstract

Disclosed are a data transmission method and device for flexibly configuring physical channel structures adopted among different terminals so as to be applicable to more application scenarios. The method comprises: a first terminal determines a first physical channel structure required for data transmission between the first terminal and a second terminal by means of a direct-connection link channel, and determines a second physical channel structure required for data transmission between the first terminal and a third terminal by means of a direct-connection link channel, the first physical channel structure being different from the second physical channel structure; and the first terminal adopts the first physical channel structure to execute data transmission to the second terminal by means of the direct-connection link channel, and the first terminal adopts the second physical channel structure to execute data transmission to the third terminal by means of the direct-connection link channel.

Description

Data transmission method and device

This application claims the priority of the Chinese Patent Application filed on Jan. 6, 2017, the Chinese Patent Application No. 201710547069.X, the application entitled "A Data Transmission Method and Apparatus", the entire contents of which are incorporated herein by reference. In the application.

Technical field

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

Background technique

In vehicle communication (Vehicle to X, V2X), Vehicle refers to a terminal on a vehicle, and X can represent a plurality of terminal entities, such as a terminal on a vehicle in a vehicle to vehicle (V2V) It can also be a pedestrian terminal in Vehicle to Pedestrian (V2P), or a terminal in the infrastructure in Vehicle to Infrastructure (V2I), and a vehicle and network. Network side device in the side communication (Vehicle to Network, V2N). Specifically, the main data transmitted in vehicle communication is road safety information. Among them, V2X mainly includes two communication modes, one is V2X direct communication, that is, two terminals of V2X communicate directly, and the other is V2X indirect communication, that is, two terminals of V2X perform indirect communication through the base station. The mode of terminal resource selection in V2X mainly includes two types. One is that the terminal itself selects idle resources in the resource pool configured for it; the other is that the base station performs resource allocation for the terminal.

The terminal in the V2X includes two types of channels when transmitting data, one is a Physical Sidelink Control Channel (PSCCH) for transmitting Scheduling Assignment (SA); the other is A physical side link control channel (PSSCH) for transmitting data information (data). Among them, the physical channel structure adopted by PSCCH and PSSCH is the same.

Since the main consideration in configuring the physical channel structure is that the transmission modes between the terminals are broadcast-based transmission methods, the configuration is more severe when configuring the physical channel structure, for example, considering the extreme relative speed to ensure normal communication. The configuration is performed, and the physical channel structures for data transmission between all terminals are configured to the same physical channel structure. However, in the current vehicle communication, an application scenario such as fleet communication is also included. In these application scenarios, since the relative speed between the vehicles in the fleet is small, there is no need to adopt a more severe physical channel structure. However, according to the present, only a unified physical channel structure can be adopted, and the physical channel structure cannot be changed according to the application scenario, and the mode is single.

Summary of the invention

The embodiment of the present invention provides a data transmission method and device, which are used to flexibly configure a physical channel structure adopted between different terminals, and are applicable to more application scenarios.

In a first aspect, a data transmission method is provided, the method comprising:

Determining, by the first terminal, the first physical channel structure that is required when the first terminal and the second terminal perform data transmission through the through link channel, and determining that the first terminal and the third terminal perform data through the through link channel a second physical channel structure that is required to be transmitted; the first physical channel structure is different from the second physical channel structure;

The first terminal uses the first physical channel structure to perform data transmission with the second terminal through a through link channel, and the first terminal adopts the second physical channel structure to pass the through link channel and the The third terminal performs data transmission.

Optionally, the first physical channel structure is different from the second physical channel structure, and includes:

The first physical channel structure and the second physical channel structure include a transmission waveform, a subcarrier spacing, a transmission time interval, a pilot structure, a TTI length, a number of symbols included in the TTI, an AGC tracking length in the TTI, and an AGC in the TTI. One or more of the tracked position, the length of the GP in the TTI, and the location of the GP in the TTI are different.

Optionally, the communication manner of the first terminal and the second terminal is multicast; and the communication manner of the first terminal and the third terminal is broadcast.

Optionally, the first terminal determines a first physical channel structure that is required to be used by the first terminal and the second terminal to perform data transmission through a through link channel, and determines that the first terminal and the third terminal pass The second physical channel structure required for the data transmission of the through link channel includes:

Determining, by the first terminal, the first terminal and the second terminal that are selected by the first terminal or the second terminal, a physical channel structure, the first resource pool corresponding to the first physical channel structure;

And determining, by the first terminal, that the first terminal and the third terminal perform data transmission through the through link channel according to the second resource pool selected by the first terminal or the third terminal a second physical channel structure, the second resource pool corresponding to the second physical channel structure.

Optionally, the first terminal determines a first physical channel structure that is required to be used by the first terminal and the second terminal to perform data transmission on the through-link channel, including:

The first terminal determines the first physical channel structure according to a physical channel structure configured in advance for the first terminal and the second terminal.

Optionally, the method further includes:

Transmitting, by the first terminal, the first indication message to the second terminal, where the first indication message is used to indicate that the first terminal and the second terminal determined by the first terminal pass the through link channel The first physical channel structure that is required for data transmission.

Optionally, the first terminal and the second terminal use the first physical channel structure to perform data transmission through a through link channel, and the first terminal and the third terminal adopt the second physics. The channel structure performs data transmission through the through link channel simultaneously in the same TTI.

Optionally, the method further includes:

The first terminal sends a second indication message to the second terminal, where the second indication message is used to indicate that the first terminal is configured by the second terminal and the third terminal The second physical channel structure required for data transmission by the terminal through the through link channel.

In a second aspect, a data transmission method is provided, the method comprising:

Determining, by the base station, a first physical channel structure that is required when the first terminal and the second terminal perform data transmission through the through link channel;

Sending, by the base station, configuration information to the first terminal and/or the second terminal, so that the first terminal and the second terminal can use the first physical channel structure to perform data transmission through a through link channel; The configuration information is used to indicate the first physical channel structure determined by the base station.

Optionally, the sending, by the base station, configuration information to the first terminal and/or the second terminal includes:

The base station sends the configuration information to the first terminal and/or the second terminal by using broadcast signaling and/or RRC signaling.

In a third aspect, a data transmission method is provided, the method comprising:

The second terminal receives the first indication message sent by the first terminal or the configuration information sent by the base station, where the first indication message is used to indicate that the first terminal and the second terminal determined by the first terminal pass the through link channel. The first physical channel structure that is required to be used for data transmission; the configuration information is used to indicate a first physical channel that is required to be used by the first terminal and the second terminal to perform data transmission through the through link channel determined by the base station structure;

The second terminal uses the first physical channel structure to perform data transmission with the first terminal through a through link channel.

A fourth aspect provides a terminal, where the terminal includes:

a first determining unit, configured to determine a first physical channel structure that is required to be used by the terminal and the second terminal to perform data transmission through the through link channel, and determine that the terminal and the third terminal perform data through the through link channel a second physical channel structure that is required to be transmitted; the first physical channel structure is different from the second physical channel structure;

a first data transmission unit, configured to perform data transmission with the second terminal through the through link channel by using the first physical channel structure, and pass the through link channel and the third by using the second physical channel structure The terminal performs data transmission.

Optionally, the communication mode of the terminal and the second terminal is multicast; and the communication mode of the terminal and the third terminal is broadcast.

Optionally, the first determining unit determines a first physical channel structure that is required to be used when the terminal and the second terminal perform data transmission through the through link channel, and determines that the terminal and the third terminal pass the through link. The second physical channel structure required for the channel to perform data transmission, including:

The first determining unit determines, according to the first resource pool selected by the terminal or the second terminal, a first physical channel that is required to be used by the terminal and the second terminal to perform data transmission through a through link channel. a structure, the first resource pool corresponding to the first physical channel structure;

And determining, according to the terminal or the second resource pool selected by the third terminal, a second physical channel structure that is required when the terminal and the third terminal perform data transmission through a through link channel. The second resource pool corresponds to the second physical channel structure.

Optionally, the first determining unit determines a first physical channel structure that is required to be used by the terminal and the second terminal to perform data transmission on the through-link channel, including:

The first determining unit determines the first physical channel structure according to a physical channel structure configured in advance for the first terminal and the second terminal.

Optionally, the terminal further includes a first sending unit,

The first sending unit is configured to send the first indication message to the second terminal, where the first indication message is used to indicate the terminal and the second terminal determined by the first determining unit The first physical channel structure required for data transmission through a through link channel.

Optionally, the terminal further includes a second sending unit;

The second sending unit is configured to send a second indication message to the second terminal, where the second indication message is used to indicate that the terminal is configured by the second terminal and the second terminal The second physical channel structure required for data transmission by the third terminal through the through link channel.

A fifth aspect provides a base station, where the base station includes:

a second determining unit, configured to determine a first physical channel structure that is required when the first terminal and the second terminal perform data transmission through the through link channel;

a third sending unit, configured to send configuration information to the first terminal and/or the second terminal, so that the first terminal and the second terminal can adopt the first physical channel structure to pass through a through link channel Performing data transmission; the configuration information is used to indicate the first physical channel structure determined by the base station.

Optionally, the sending, by the third sending unit, the configuration information to the first terminal and/or the second terminal includes:

The third sending unit sends the configuration information to the first terminal and/or the second terminal by using broadcast signaling and/or RRC signaling.

A sixth aspect provides a terminal, where the terminal includes:

a receiving unit, configured to receive a first indication message sent by the first terminal or configuration information sent by the base station, where the first indication message is used to indicate that the first terminal and the second terminal determined by the first terminal pass the through link The first physical channel structure that is required to be used for data transmission by the channel; the configuration information is used to indicate that the first terminal and the second terminal determined by the base station need to adopt the data through the through link channel for data transmission. Physical channel structure;

And a second data transmission unit, configured to perform data transmission with the first terminal by using the first physical channel structure through a through link channel.

In a seventh aspect, a terminal is provided, comprising: a processor that implements the following process when executing a computer program stored in a memory:

Determining a first physical channel structure that needs to be adopted when the terminal and the second terminal perform data transmission through the through link channel, and determining a number required for the terminal and the third terminal to perform data transmission through the through link channel a second physical channel structure; the first physical channel structure is different from the second physical channel structure; using the first physical channel structure to perform data transmission with the second terminal through a through link channel, and adopting the The two physical channel structures perform data transmission with the third terminal through a through link channel.

Optionally, the processor determines a first physical channel structure that is required to be used by the terminal and the second terminal to perform data transmission through a through link channel, and determines that the terminal and the third terminal perform a through link channel. The second physical channel structure required for data transmission, including:

Determining, by the processor, the first physical channel structure that is required to be used by the terminal and the second terminal to perform data transmission through the through link channel, according to the first resource pool selected by the terminal or the second terminal, The first resource pool corresponds to the first physical channel structure;

Optionally, the determining, by the processor, the first physical channel structure that is required to be used by the terminal and the second terminal to perform data transmission on the through-link channel, including:

The processor determines the first physical channel structure according to a physical channel structure configured in advance for the first terminal and the second terminal.

Optionally, the processor is further configured to:

Transmitting the first indication message to the second terminal, where the first indication message is used to indicate that the terminal determined by the first determining unit and the second terminal perform data transmission through a through link channel The first physical channel structure that needs to be employed.

Optionally, the processor is further configured to:

Sending a second indication message to the second terminal, where the second indication message is used to indicate that the second terminal and the third terminal configured by the terminal for the second terminal are performed by using a through link channel The second physical channel structure that is required for data transmission.

In an eighth aspect, a base station includes a processor that implements the following processes when executing a computer program stored in a memory:

Determining a first physical channel structure that is required when the first terminal and the second terminal perform data transmission through the through link channel; sending configuration information to the first terminal and/or the second terminal, so that the first terminal And transmitting, by the second terminal, the data transmission through the through link channel by using the first physical channel structure; the configuration information is used to indicate the first physical channel structure determined by the base station.

Optionally, the sending, by the processor, the configuration information to the first terminal and/or the second terminal includes:

In a ninth aspect, a terminal includes a processor that implements the following processes when executing a computer program stored in a memory:

Receiving a first indication message sent by the first terminal or configuration information sent by the base station; the first indication message is used to indicate that the first terminal and the second terminal determined by the first terminal perform data transmission through a through link channel The first physical channel structure that is required to be used; the configuration information is used to indicate a first physical channel structure that is required to be used by the first terminal and the second terminal to perform data transmission through the through link channel determined by the base station; The first physical channel structure performs data transmission with the first terminal through a through link channel.

A tenth aspect, a computer readable storage medium having stored thereon a computer program, wherein the computer program is executed by a processor to implement data transmission as provided by the first aspect, the second aspect, and the third aspect Method The steps of any of the methods described.

In the embodiment of the present application, the first physical channel structure is adopted when the first terminal and the second terminal perform data transmission, and the second physical channel structure is adopted when the first terminal and the third terminal perform data transmission, and the two physical The channel structure is different. When data transmission between different terminals is performed, the physical channel structure adopted between different terminals can be flexibly configured while satisfying the requirements of data transmission, and thus is applicable to more application scenarios.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings to be used in the embodiments of the present application will be briefly described below. Obviously, the following drawings are only some embodiments of the present application, for Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a schematic diagram of a TTI structure in the prior art;

2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention;

3 is an application scenario diagram of vehicle fleet communication according to an embodiment of the present invention;

4 is a schematic diagram of a pilot structure according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of another pilot structure according to an embodiment of the present disclosure;

FIG. 6 is a schematic flowchart diagram of another data transmission method according to an embodiment of the present disclosure;

FIG. 7 is a schematic flowchart diagram of still another data transmission method according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of a computer device according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application.

The technical background of the embodiment of the present application is described below.

Currently, the physical channel structure of PSCCH and PSSCH is defined as follows:

(1) Data transmission using a single-carrier frequency-division multiple (SC-FDM) waveform. Wherein, since SC-FDMA is a single-carrier (Single-carrier) data transmission, it has a lower peak/average power ratio compared to Orthogonal Frequency Division Multiple (OFDM) (peak- To-average power ratio (PAPR), lower PAPR can make the power amplifier of the terminal more efficient.

(2) using a subcarrier spacing of 15 kHz;

(3) The transmission time interval (TTI) length is 1 ms. Please refer to FIG. 1 , which is a schematic diagram of a TTI structure in the prior art. Wherein, the hatched area in FIG. 1 , that is, the first symbol in the TTI is an Automatic Gain Control (AGC) region; the oblique grid region in FIG. 1 , the 3rd, 6th, and 9th in the TTI The 12 symbols are DeModulation Reference Signal (DMRS), which is the area occupied by the pilot signal, which occupies 4 symbols in the TTI. The square area in Figure 1, that is, the last symbol in the TTI is used as protection. Guard Period (GP), used for protection from downlink to uplink conversion; the blank area in Figure 1 is the data area.

The main consideration in configuring the above physical channel structure is that the transmission modes between the terminals are broadcast-based transmission methods. Therefore, the configuration is more severe when configuring the physical channel structure. For example, the above four pilot signals are used to It adapts to network changes when the vehicle speed is higher, and configures the physical channel structure for data transmission between all terminals to be the same physical channel structure. However, in the current vehicle communication, an application scenario such as fleet communication is also included. In these application scenarios, since the relative speed between the vehicles in the fleet is small, there is no need to adopt a more severe physical channel structure. However, according to the present, only a unified physical channel structure can be adopted, and the physical channel structure cannot be changed according to the application scenario, and the mode is single.

In view of this, the embodiment of the present application provides a data transmission method, in which a first terminal and a second terminal use a first physical channel structure for data transmission, and a first terminal and a third terminal perform data transmission. Two physical channel structures, and the two physical channel structures are different. When data transmission between different terminals is performed, the physical channel structure adopted between different terminals can be flexibly configured while satisfying the requirements of data transmission. And then apply to more application scenarios.

The technical solutions provided by the embodiments of the present application are described below with reference to the accompanying drawings.

Referring to FIG. 2, an embodiment of the present application provides a data transmission method, where the method includes:

Step 201: The first terminal determines a first physical channel structure that needs to be adopted when the first terminal and the second terminal perform data transmission through the through link channel, and determines that the first terminal and the third terminal perform data transmission through the through link channel. a second physical channel structure to be used; the first physical channel structure is different from the second physical channel structure;

Step 202: The first terminal uses the first physical channel structure to perform data transmission with the second terminal through the through link channel, and the first terminal uses the second physical channel structure to perform data transmission with the third terminal through the through link channel.

Please refer to FIG. 3 , which is an application scenario diagram of vehicle fleet communication according to an embodiment of the present application. Wherein, the first fleet includes four vehicles, each of which may include one terminal, and the first terminal and the second terminal may be terminals included in any two of the vehicles, and the number of the first fleet in FIG. 3 is only For example, the embodiment of the present application does not limit the number of terminals included in the first fleet. In addition, the embodiment of the present application is also not limited to data transmission between terminals included in two vehicles in the first fleet, and may also include terminals included in multiple vehicles, for example, may be terminals included in 3 vehicles or 4 vehicles. For the convenience of the description, the first embodiment and the second terminal are taken as an example for description. The application scenario further includes a third terminal located outside the first fleet.

Of course, the method of the embodiment of the present application is not limited to the scenario applied to the fleet communication shown in FIG. 3, and can also be applied to other application scenarios, such as advanced driving, sensor information sharing, and remote control. It should be noted that the method in the embodiment of the present application is mainly applied to the data transmission through the through-link channel, and the subsequent data transmission also refers to the data transmission through the through-link channel, and details are not described herein.

In the embodiment of the present application, the first terminal and the second terminal may perform data transmission with the third terminal other than the first fleet in addition to data transmission between the first fleet.

In the embodiment of the present application, when the first terminal and the second terminal need to perform data transmission, and the third terminal outside the first fleet performs data transmission, for example, when the first terminal needs to transmit road safety information to the second terminal, or When the first terminal needs to transmit the road security information to the third terminal, first, the first physical channel structure required for data transmission between the first terminal and the second terminal, and between the first terminal and the third terminal are determined. The second physical channel structure required for data transmission.

The first terminal and the second terminal may adopt a multicast communication mode because they belong to the terminal in the first fleet. Of course, if the second terminal communicates with other vehicles in the fleet, the communication mode is also multicast. For example, the first terminal may further include a fourth terminal, and the communication manners of the second terminal and the fourth terminal are also multicast; and the third terminal is located outside the first fleet, the first terminal and the third terminal may adopt Broadcast communication method.

Wherein, since the communication between the first terminal and the second terminal is performed within the first fleet, the relative speed of the first terminal and the second terminal is small during the traveling of the fleet, and the A physical channel structure only needs to meet the requirements of data transmission, instead of adopting a second physical channel structure suitable for higher speed between terminals, correspondingly, the first physical channel structure may use less resources correspondingly. That is, the first physical channel structure may be a physical channel structure that is smaller than the second physical channel structure overhead.

The physical channel structure may include multiple components, including but not limited to the following:

(1) Transmission waveform, which is a method of carrying a carrier of data when performing data transmission. The transmission waveform can include both DFDM and SC-FDM.

(2) Subcarrier spacing, the subcarrier spacing may be, for example, 15 kHz, 30 kHz, 60 kHz, or the like.

(3) The TTI length or the number of symbols included in the TTI, for example, when the symbols included in the TTI structure are less, the TTI length is shorter.

(4) Pilot structure, the pilot structure can be configured according to the timing of the network and the like. Please refer to FIG. 4 and FIG. 5, which are schematic diagrams of two different pilot structures. Wherein, the DMRS pilot signal uses less resources than the DMRS pilot signal in the prior art, and in FIG. 4, the pilot signal adopts a segment and is discontinuously arranged, and the pilot signal in FIG. 5 is used. A structure that is continuously arranged in the lateral direction.

(5) Length of AGC tracking in TTI.

(6) The location of the AGC tracking in the TTI.

(7) The length of the GP in the TTI.

(8) The location of the GP in the TTI.

In the embodiment of the present application, when any one of the foregoing components of the configured physical channel structure is different, the configured physical channel structure is different. Therefore, in the actual communication process, the foregoing component factors may be flexibly combined. Configure a physical channel structure that is more suitable for the current communication process. For example, the transmission waveform used by the first physical channel structure is DFDM, and the transmission waveform of the second physical channel structure may be SC-FDM; or the transmission waveform used by the first physical channel structure is DFDM, and the length of the TTI is The transmission waveform that can be used for 0.5 ms and the second physical channel structure is SC-FDM, and the TTI length is 1 ms.

Specifically, the difference between the first physical channel structure and the second physical channel structure in the embodiment of the present application may be different in one or more of the foregoing component factors. Among them, a plurality of constituent factors can be combined to obtain a plurality of different physical channel structures.

In the embodiment of the present application, first, determining a first physical channel structure used by the first terminal and the second terminal for performing data transmission, and determining a second physical channel structure used by the first terminal and the third terminal for performing data transmission .

Specifically, the first terminal may determine, according to the first resource pool selected by the first terminal or the second terminal, a first physical channel structure that is required to be used when the first terminal and the second terminal perform data transmission, and according to the first terminal or The second resource pool selected by the third terminal determines a second physical channel structure that needs to be adopted when the first terminal and the third terminal perform data transmission.

In the embodiment of the present application, before the data transmission by the communication device, the resource for data transmission is first determined. For example, before the first terminal wants to transmit the road security information to the second terminal, the first terminal may first be the first terminal. Selecting an idle transmission resource as the transmission resource of the road security information, or when the first terminal is in the coverage of the base station, the first terminal may also allocate the first transmission resource pool allocated by the base station to the first transmission resource pool. The transmission resource in the medium is used as a transmission resource of the road safety information. Then, after the first resource pool for transmitting data is determined, the first terminal may determine the physical channel structure corresponding to the first resource pool as the first physical channel structure. The first resource pool selected by the second terminal or the second resource pool selected by the third terminal is similar to the foregoing, and details are not described herein again.

The corresponding relationship between the resource pool and the physical channel structure may be configured by the network side or the base station, or may be a pre-configured fixed correspondence relationship, that is, different resource pools may correspond to the same or different physical channel structures. For example, the first resource pool corresponds to the first physical channel structure, and the second resource pool corresponds to the second physical channel structure. At the same time, the resource pool may be configured as a first resource pool used when the first terminal and the second terminal perform data transmission, and the resource pool is different when the terminal in the first fleet performs data transmission with the third terminal. a second resource pool, such that when the first terminal and the second terminal are performing data transmission, the first physical channel structure corresponding to the used resource pool is used for data transmission between the terminal and the third terminal in the first fleet The second physical channel structure corresponding to the resource pool utilized is definitely different.

In the embodiment of the present application, in addition to the foregoing method corresponding to the selected resource pool, the first terminal may further determine the first physical channel structure according to the physical channel structure configured by the base station for the first terminal and the second terminal.

When the first fleet is located within the coverage of the base station, the first physical channel structure used by the first terminal and the second terminal for data transmission may be configured by the base station. Specifically, the base station may determine information such as a relative speed or a relative distance between the first terminal and the second terminal according to the movement trajectory of the first terminal and the second terminal, and further allocate a first physics suitable for the current first terminal and the second terminal. Channel structure.

Specifically, the configuration information of the physical channel structure configured by the base station for the terminal in the first fleet may be sent to the terminal in the first fleet by using broadcast signaling and/or radio resource control (RRC) signaling. The configuration information includes configuration parameters of constituent factors of the physical channel structure, such as the above-mentioned transmission waveform, TTI length, and the like. The configuration information may include all components of the physical channel structure, that is, each component is configured, or may only include configuration parameters of individual component factors, that is, only individual component factors are configured, and unconfigured may be used. The default configuration parameters in the protocol.

In the embodiment of the present application, the first physical channel structure may also be pre-configured, that is, the data transmission inside the first team set in advance adopts the first physical channel structure.

In the embodiment of the present application, in order to facilitate management of the terminal in the first fleet, a fleet leader is set in the first fleet, and the fleet leader can coordinate data transmission between the teams, including but not limited to The resources utilized for data transmission and the physical channel structure used for data transmission. It can be assumed here that the first terminal is a fleet leader in the first fleet. The first terminal may determine, according to data to be transmitted by the first terminal and the second terminal, or a relative speed of the first terminal and the second terminal, or a working frequency of the first terminal, to determine data transmission between the first terminal and the second terminal. The first physical channel structure that needs to be used.

The first terminal can determine the first physical channel structure to be used according to the data to be transmitted inside the fleet. For example, when the data to be transmitted between the first terminal and the second terminal has a high delay requirement, the first terminal may determine to use a physical channel structure with a shorter TTI length for data transmission, thereby reducing data transmission time. Delay.

The first terminal can determine the first physical channel structure to be used according to the relative vehicle speed between the terminals inside the fleet. For example, when the relative vehicle speed between the first terminal and the second terminal is low, the first terminal may determine to use less physical signal structure of the pilot signal for data transmission, thereby reducing resources occupied by the pilot signal. , thereby reducing the overhead of data transmission.

The first terminal may determine the first physical channel structure to be used according to the working frequency of the fleet or the number of terminals communicating within the fleet. For example, when the number of terminals that need to perform data transmission is small, and the distance between the terminals is relatively close, the first terminal may determine a physical channel structure using the transmission waveform as an OFDM method, thereby also configuring the configured pilot. There are fewer signals to reduce the overhead of data transfer.

After the first terminal determines the first physical channel structure, the first terminal may further send a first indication message to the second terminal, where the first indication message is used to indicate that the first terminal and the second terminal determined by the first terminal perform data transmission. A physical channel structure, after the second terminal receives the first indication message, the first physical channel structure may be used to perform data transmission with the first terminal.

As the fleet leader in the first fleet, the first terminal can coordinate the data transmission inside the first fleet, and can also coordinate the physical channel structure when the first fleet and the terminal outside the first fleet perform data transmission. For example, when the first fleet needs to transmit data with the third terminal outside the first fleet, it is often unnecessary for all terminals in the first fleet to transmit data with the third terminal, so the first terminal can be in the first fleet. The one or more terminals send an indication message to specify that one or more terminals in the first fleet can perform data transmission with the third terminal while performing data transmission inside the fleet. At the same time, the designated terminal may perform data transmission with the third terminal according to the physical channel structure specified by the first terminal. For example, the second terminal performs data transmission with the third terminal according to the second physical channel structure specified by the first terminal. Wherein, the indication message includes configuration parameters of constituent factors of the physical channel structure, such as the above-mentioned transmission waveform, TTI length, and the like. The indication message may include all components of the physical channel structure, that is, each component is configured, or may only include configuration parameters of individual component factors, that is, only individual component factors are configured, and unconfigured may be used. The default configuration parameters in the protocol.

In the embodiment of the present application, any one of the first fleets may perform data transmission with the terminal inside the first fleet by using the first physical channel structure, and may also perform the second physical channel structure with the terminal outside the first fleet. data transmission. For example, the first terminal uses the first physical channel structure to perform data transmission with the second terminal, and the first terminal uses the second physical channel structure to perform data transmission with the third terminal simultaneously in the same TTI. From the perspective of the first terminal, data transmission is performed with the second terminal and the third terminal in two physical channel structures at the same time, so that the impact of the half duplex on the first terminal can be reduced, so that the first terminal can have more The time is received for data to avoid missing information sent by the second terminal and the third terminal.

After describing how to determine the first physical channel structure and the second physical channel structure, the following may cite two possible cases of the first physical channel structure and the second physical channel structure:

(1) The transmission waveform of the first physical channel structure is OFDM, and the transmission waveform of the second physical channel structure is SC-FDM. Specifically, since the range of communication is known within the vehicle fleet, that is, the multicast communication mode, the distance required for data transmission can usually be smaller than that of the broadcast, thereby reducing the efficiency of the power amplifier, that is, adopting the OFDM method. The OFDM approach can make resource allocation more flexible, and its pilot structure can be more sparse, thereby improving resource utilization.

(2) The TTI length of the first physical channel structure may be half a subframe or shorter, and is suitable for a communication mode for multicast; the TTI length of the second physical channel structure is a subframe, that is, 1 ms, which is suitable for broadcast communication. the way. The length of the TTI can be related to the delay requirement of the service performed during the data transmission. Therefore, the TTI length applicable to different services can be flexibly configured according to the delay requirements of the two services using the two physical channel structures. .

Please continue to refer to FIG. 2, the first physical channel structure required for determining the data transmission of the first terminal and the second terminal in the first fleet, and the determination of the first terminal and the third terminal for data transmission. After the second physical channel structure, the first terminal and the second terminal may use the first physical channel structure for data transmission, and the first terminal and the third terminal use the second physical channel structure for data transmission.

In summary, the first physical channel structure is adopted when data transmission is performed inside the first fleet, and the second physical channel structure is adopted when the terminal in the first fleet and the third terminal outside the first fleet perform data transmission. And the two physical channel structures are different, then the data transmission in the first fleet can have lower overhead requirements, that is to say, the first fleet can use the first physical channel structure with less overhead. Data transmission, in this way, can make the use of less resources while reducing the overhead of data transmission inside the fleet while meeting the requirements of data transmission, thereby improving the utilization of resources. At the same time, when data transmission between different terminals is performed, the physical channel structure adopted between different terminals can be flexibly configured while satisfying the requirements of data transmission, and thus is applicable to more application scenarios.

Referring to FIG. 6, an embodiment of the present application further provides a data transmission method, where the method includes:

Step 601: The base station determines a first physical channel structure that is required when the first terminal and the second terminal perform data transmission through the through link channel.

Step 602: The base station sends configuration information to the first terminal and/or the second terminal, so that the first terminal and the second terminal can use the first physical channel structure to perform data transmission through the through link channel; the configuration information is used to indicate that the base station determines The first physical channel structure.

Here, the application scenario shown in FIG. 3 is taken as an example for description. Wherein, when the first fleet is located within the coverage of the base station, the first physical channel structure used by the first terminal and the second terminal for data transmission may be configured by the base station. Specifically, the base station may determine information such as a relative speed or a relative distance between the first terminal and the second terminal according to the movement trajectory of the first terminal and the second terminal, and further allocate a first physics suitable for the current first terminal and the second terminal. Channel structure. The base station may send the configuration information to the first terminal and/or the second terminal, so that after the first terminal and the second terminal receive the configuration information, the first physical channel structure configured by the base station may be known. A description of the embodiment portion shown in FIG. 2.

Referring to FIG. 7, an embodiment of the present application further provides a data transmission method, where the method includes:

Step 701: The second terminal receives the first indication message sent by the first terminal or the configuration information sent by the base station, where the first indication message is used to indicate that the first terminal and the second terminal determined by the first terminal perform data transmission through the through link channel. The first physical channel structure that is required to be used; the configuration information is used to indicate a first physical channel structure that is required to be used by the first terminal and the second terminal to perform data transmission through the through-link channel;

Step 702: The second terminal uses the first physical channel structure to perform data transmission with the first terminal through the through link channel.

Here, the application scenario shown in FIG. 3 is taken as an example for description. After the first terminal and the base station respectively send the first indication message and the configuration information to the second terminal, the first indication message is used to indicate that the first terminal and the second terminal determined by the first terminal perform data transmission through the through link channel. The first physical channel structure is required to be used; the configuration information is used to indicate a first physical channel structure that is required to be used by the first terminal and the second terminal to perform data transmission through the through link channel. Therefore, after the second terminal accepts the first first indication message message or the configuration information, the second terminal can know the first physical channel structure configured by the first terminal or the base station, and can adopt the first physical channel structure to pass through. The link channel performs data transmission with the first terminal. For details, refer to the description of the embodiment part shown in FIG. 2, and details are not described herein again.

The device provided in the embodiment of the present application is described below with reference to the accompanying drawings.

Referring to FIG. 8, an embodiment of the present application provides a data transmission device 80 based on the same inventive concept. The device includes:

The first determining unit 801 determines a first physical channel structure that needs to be adopted when the terminal and the second terminal perform data transmission through the through link channel, and determines that the terminal and the third terminal perform data transmission through the through link channel. a second physical channel structure that is required to be used; the first physical channel structure is different from the second physical channel structure;

a first data transmission unit 802, configured to perform data transmission with the second terminal by using a first physical channel structure through a through link channel, and use the second physical channel structure to pass the through link channel and the first The three terminals perform data transmission.

Optionally, the first determining unit 801 determines a first physical channel structure that is required to be used when the terminal and the second terminal perform data transmission through the through link channel, and determines that the terminal and the third terminal pass the through link. The second physical channel structure required for the data transmission of the channel, including:

The first determining unit 801 determines, according to the first resource pool selected by the terminal or the second terminal, a first physics that is required when the terminal and the second terminal perform data transmission through a through link channel. a channel structure, the first resource pool corresponding to the first physical channel structure;

Optionally, the first determining unit 801 determines a first physical channel structure that is required to be used when the terminal and the second terminal perform data transmission by using the through link channel, and includes:

The first determining unit 801 determines the first physical channel structure according to a physical channel structure configured in advance for the first terminal and the second terminal.

Optionally, the terminal further includes a first sending unit 803.

The first sending unit 803 is configured to send the first indication message to the second terminal, where the first indication message is used to indicate the terminal and the first determined by the first determining unit 801 The first physical channel structure that is required when the second terminal performs data transmission through the through link channel.

Optionally, the terminal further includes a second sending unit 804;

The second sending unit 804 is configured to send a second indication message to the second terminal, where the second indication message is used to indicate that the terminal is configured by the second terminal and the second terminal The second physical channel structure that is required when the third terminal performs data transmission through the through link channel.

The device can be used to perform the method provided by the embodiment shown in FIG. 2. Therefore, for the functions and the like that can be implemented for each functional module of the terminal, reference may be made to the description of the embodiment shown in FIG. 2, and details are not described herein. Wherein, since the first transmitting unit 803 and the second transmitting unit 804 are not mandatory functional modules, they are shown by broken lines in FIG. 8.

Referring to FIG. 9, an embodiment of the present application provides a base station 90 based on the same inventive concept. The device includes:

a second determining unit 901, configured to determine a first physical channel structure that is required when the first terminal and the second terminal perform data transmission through the through link channel;

The third sending unit 902 is configured to send configuration information to the first terminal and/or the second terminal, so that the first terminal and the second terminal can adopt the first physical channel structure to pass the through link. The channel performs data transmission; the configuration information is used to indicate the first physical channel structure determined by the base station.

Optionally, the sending, by the third sending unit 902, the configuration information to the first terminal and/or the second terminal includes:

The third sending unit 902 sends the configuration information to the first terminal and/or the second terminal by using broadcast signaling and/or RRC signaling.

The device can be used to perform the method provided by the embodiment shown in FIG. 7. Therefore, for the functions and the like that can be implemented for each functional module of the base station, reference may be made to the description of the embodiment shown in FIG.

Referring to FIG. 10, an embodiment of the present application provides a data transmission device 100 based on the same inventive concept. The device includes:

The receiving unit 1001 is configured to receive the first indication message sent by the first terminal or the configuration information sent by the base station, where the first indication message is used to indicate that the first terminal and the second terminal determined by the first terminal pass the pass-through The first physical channel structure that is required to be used when the link channel performs data transmission; the configuration information is used to indicate that the first terminal and the second terminal determined by the base station need to adopt the data transmission through the through link channel a physical channel structure;

The second data transmission unit 1002 is configured to perform data transmission with the first terminal by using the first physical channel structure through a through link channel.

The device can be used to perform the method provided in the embodiment shown in FIG. 8. Therefore, for the functions and the like that can be implemented for each functional module of the terminal, reference may be made to the description of the embodiment shown in FIG. 8, and details are not described herein.

Referring to FIG. 11 , an embodiment of the present application further provides a computer device, where the computer device includes a processor 1101. The processor 1101 is configured to implement the steps of the data transmission method provided by the embodiment of the present application when the computer program stored in the memory is executed. .

Optionally, the processor 1101 may be a central processing unit, an application specific integrated circuit (ASIC), and may be one or more integrated circuits for controlling program execution, and may be used on site. A hardware circuit developed by a Field Programmable Gate Array (FPGA) can be a baseband processor.

Optionally, the processor 1101 may include at least one processing core.

Optionally, the computer device further includes a memory 1102. The memory 1102 can include a read only memory (English: Read Only Memory, ROM for short), a random access memory (English: Random Access Memory, RAM for short), and a disk storage. The memory 1102 is used to store data required for the processor 1101 to operate. The number of memories 1102 is one or more. Among them, the memory 1102 is shown together in FIG. 11, but it is necessary to know that the memory 1102 is not a mandatory functional module, and thus is shown by a broken line in FIG.

An embodiment of the present application further provides a computer readable storage medium, where the computer program is stored, and the computer program is executed by the processor to implement the steps of the data transmission method provided by the embodiment of the present application.

In the embodiments of the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit or unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.

The functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may also be an independent physical module.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the technical solutions of the embodiments of the present application may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a computer device, for example, A personal computer, server, or network device, etc., or a processor executes all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a Universal Serial Bus flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk. Or a variety of media such as optical discs that can store program code.

The above-mentioned embodiments are only used to describe the technical solutions of the present application in detail, but the description of the above embodiments is only used to help understand the method of the embodiments of the present application, and should not be construed as limiting the embodiments of the present application. Variations or substitutions that may be readily conceived by those skilled in the art are intended to be included within the scope of the embodiments of the present application.

Claims

A data transmission method, comprising:

Determining, by the first terminal, the first physical channel structure that is required when the first terminal and the second terminal perform data transmission through the through link channel, and determining that the first terminal and the third terminal perform data through the through link channel a second physical channel structure that is required to be transmitted; the first physical channel structure is different from the second physical channel structure;

The first terminal uses the first physical channel structure to perform data transmission with the second terminal through a through link channel, and the first terminal adopts the second physical channel structure to pass the through link channel and the The third terminal performs data transmission.
The method of claim 1, wherein the first physical channel structure is different from the second physical channel structure, including:

The first physical channel structure and the second physical channel structure include a transmission waveform, a subcarrier spacing, a transmission time interval, a pilot structure, a TTI length, a number of symbols included in the TTI, an AGC tracking length in the TTI, and an AGC in the TTI. One or more of the tracked position, the length of the GP in the TTI, and the location of the GP in the TTI are different.
The method according to claim 2, wherein the communication mode of the first terminal and the second terminal is multicast; and the communication manner of the first terminal and the third terminal is broadcast.
The method according to claim 3, wherein the first terminal determines a first physical channel structure to be used when the first terminal and the second terminal perform data transmission through a through link channel, and determines a location The second physical channel structure required for the first terminal and the third terminal to perform data transmission through the through link channel, including:

Determining, by the first terminal, the first terminal and the second terminal that are selected by the first terminal or the second terminal, a physical channel structure, the first resource pool corresponding to the first physical channel structure;

And determining, by the first terminal, that the first terminal and the third terminal perform data transmission through the through link channel according to the second resource pool selected by the first terminal or the third terminal a second physical channel structure, the second resource pool corresponding to the second physical channel structure.
The method of claim 3, wherein the first terminal determines a first physical channel structure that is required to be used by the first terminal and the second terminal to perform data transmission on the through-link channel, including:

The first terminal determines the first physical channel structure according to a physical channel structure configured in advance for the first terminal and the second terminal.
The method of claim 3, wherein the method further comprises:

Transmitting, by the first terminal, the first indication message to the second terminal, where the first indication message is used to indicate that the first terminal and the second terminal determined by the first terminal pass the through link channel The first physical channel structure that is required for data transmission.
The method according to claim 3, wherein said first terminal and said second terminal use said first physical channel structure for data transmission through a through link channel, with said first terminal and said The third terminal uses the second physical channel structure to perform data transmission through the through link channel simultaneously in the same TTI.
The method of any of claims 1-7, wherein the method further comprises:

The first terminal sends a second indication message to the second terminal, where the second indication message is used to indicate that the first terminal is configured by the second terminal and the third terminal The second physical channel structure required for data transmission by the terminal through the through link channel.
A data transmission method, comprising:

Determining, by the base station, a first physical channel structure that is required when the first terminal and the second terminal perform data transmission through the through link channel;

Sending, by the base station, configuration information to the first terminal and/or the second terminal, so that the first terminal and the second terminal can use the first physical channel structure to perform data transmission through a through link channel; The configuration information is used to indicate the first physical channel structure determined by the base station.
The method of claim 9, wherein the sending, by the base station, configuration information to the first terminal and/or the second terminal comprises:

The base station sends the configuration information to the first terminal and/or the second terminal by using broadcast signaling and/or RRC signaling.
A data transmission method, comprising:

The second terminal receives the first indication message sent by the first terminal or the configuration information sent by the base station, where the first indication message is used to indicate that the first terminal and the second terminal determined by the first terminal pass the through link channel. The first physical channel structure that is required to be used for data transmission; the configuration information is used to indicate a first physical channel that is required to be used by the first terminal and the second terminal to perform data transmission through the through link channel determined by the base station structure;

The second terminal uses the first physical channel structure to perform data transmission with the first terminal through a through link channel.
A terminal, comprising:

a first determining unit, configured to determine a first physical channel structure that is required to be used by the terminal and the second terminal to perform data transmission through the through link channel, and determine that the terminal and the third terminal perform data through the through link channel a second physical channel structure that is required to be transmitted; the first physical channel structure is different from the second physical channel structure;

a first data transmission unit, configured to perform data transmission with the second terminal through the through link channel by using the first physical channel structure, and pass the through link channel and the third by using the second physical channel structure The terminal performs data transmission.
The terminal according to claim 12, wherein the first physical channel structure is different from the second physical channel structure, and includes:

The first physical channel structure and the second physical channel structure include a transmission waveform, a subcarrier spacing, a transmission time interval, a pilot structure, a TTI length, a number of symbols included in the TTI, an AGC tracking length in the TTI, and an AGC in the TTI. One or more of the tracked position, the length of the GP in the TTI, and the location of the GP in the TTI are different.
The terminal according to claim 12, wherein the communication mode of the terminal and the second terminal is multicast; and the communication mode of the terminal and the third terminal is broadcast.
The terminal according to claim 14, wherein the first determining unit determines a first physical channel structure that needs to be adopted when the terminal and the second terminal perform data transmission through a through link channel, and determines the The second physical channel structure required for the terminal and the third terminal to perform data transmission through the through link channel, including:

The first determining unit determines, according to the first resource pool selected by the terminal or the second terminal, a first physical channel that is required to be used by the terminal and the second terminal to perform data transmission through a through link channel. a structure, the first resource pool corresponding to the first physical channel structure;

And determining, according to the terminal or the second resource pool selected by the third terminal, a second physical channel structure that is required when the terminal and the third terminal perform data transmission through a through link channel. The second resource pool corresponds to the second physical channel structure.
The terminal according to claim 14, wherein the first determining unit determines a first physical channel structure that needs to be adopted when the terminal and the second terminal perform data transmission through a through-link channel, including:

The first determining unit determines the first physical channel structure according to a physical channel structure configured in advance for the first terminal and the second terminal.
The terminal according to claim 14, wherein the terminal further comprises a first sending unit,

The first sending unit is configured to send the first indication message to the second terminal, where the first indication message is used to indicate the terminal and the second terminal determined by the first determining unit The first physical channel structure required for data transmission through a through link channel.
The terminal according to claim 14, wherein the first terminal and the second terminal perform data transmission through the through link channel by using the first physical channel structure, and the first terminal and the The third terminal uses the second physical channel structure to perform data transmission through the through link channel simultaneously in the same TTI.
The terminal according to any one of claims 12 to 18, wherein the terminal further comprises a second sending unit;

The second sending unit is configured to send a second indication message to the second terminal, where the second indication message is used to indicate that the terminal is configured by the second terminal and the second terminal The second physical channel structure required for data transmission by the third terminal through the through link channel.
A base station, comprising:

a second determining unit, configured to determine a first physical channel structure that is required when the first terminal and the second terminal perform data transmission through the through link channel;

a third sending unit, configured to send configuration information to the first terminal and/or the second terminal, so that the first terminal and the second terminal can adopt the first physical channel structure to pass through a through link channel Performing data transmission; the configuration information is used to indicate the first physical channel structure determined by the base station.
The base station according to claim 20, wherein the sending, by the third sending unit, the configuration information to the first terminal and/or the second terminal comprises:

The third sending unit sends the configuration information to the first terminal and/or the second terminal by using broadcast signaling and/or RRC signaling.
A terminal, comprising:

a receiving unit, configured to receive a first indication message sent by the first terminal or configuration information sent by the base station, where the first indication message is used to indicate that the first terminal and the second terminal determined by the first terminal pass the through link The first physical channel structure that is required to be used for data transmission by the channel; the configuration information is used to indicate that the first terminal and the second terminal determined by the base station need to adopt the data through the through link channel for data transmission. Physical channel structure;

And a second data transmission unit, configured to perform data transmission with the first terminal by using the first physical channel structure through a through link channel.
A terminal, comprising: a processor, the processor performing the following process when executing a computer program stored in a memory:

Determining a first physical channel structure that needs to be adopted when the terminal and the second terminal perform data transmission through the through link channel, and determining a number required for the terminal and the third terminal to perform data transmission through the through link channel a second physical channel structure; the first physical channel structure is different from the second physical channel structure; using the first physical channel structure to perform data transmission with the second terminal through a through link channel, and adopting the The two physical channel structures perform data transmission with the third terminal through a through link channel.
The terminal according to claim 23, wherein the first physical channel structure is different from the second physical channel structure, and includes:

The first physical channel structure and the second physical channel structure include a transmission waveform, a subcarrier spacing, a transmission time interval, a pilot structure, a TTI length, a number of symbols included in the TTI, an AGC tracking length in the TTI, and an AGC in the TTI. One or more of the tracked position, the length of the GP in the TTI, and the location of the GP in the TTI are different.
The terminal according to claim 23, wherein the communication mode of the terminal and the second terminal is multicast; and the communication mode of the terminal and the third terminal is broadcast.
The terminal according to claim 25, wherein said processor determines a first physical channel structure required for data transmission by said terminal and said second terminal over a through link channel, and determining said terminal and The second physical channel structure required for the third terminal to perform data transmission through the through link channel, including:

Determining, by the processor, the first physical channel structure that is required to be used by the terminal and the second terminal to perform data transmission through the through link channel, according to the first resource pool selected by the terminal or the second terminal, The first resource pool corresponds to the first physical channel structure;

And determining, according to the terminal or the second resource pool selected by the third terminal, a second physical channel structure that is required when the terminal and the third terminal perform data transmission through a through link channel. The second resource pool corresponds to the second physical channel structure.
The terminal according to claim 25, wherein the processor determines a first physical channel structure to be used when the terminal and the second terminal perform data transmission through the through link channel, including:

The processor determines the first physical channel structure according to a physical channel structure configured in advance for the first terminal and the second terminal.
The terminal according to claim 25, wherein the processor is further configured to:

Transmitting the first indication message to the second terminal, where the first indication message is used to indicate that the terminal determined by the first determining unit and the second terminal perform data transmission through a through link channel The first physical channel structure that needs to be employed.
The terminal according to claim 25, wherein said first terminal and said second terminal use said first physical channel structure for data transmission through a through link channel, with said first terminal and said The third terminal uses the second physical channel structure to perform data transmission through the through link channel simultaneously in the same TTI.
The terminal according to any one of claims 23 to 29, wherein the processor is further configured to:

Sending a second indication message to the second terminal, where the second indication message is used to indicate that the second terminal and the third terminal configured by the terminal for the second terminal are performed by using a through link channel The second physical channel structure that is required for data transmission.
A base station, comprising: a processor, the processor performing the following process when executing a computer program stored in a memory:

Determining a first physical channel structure that is required when the first terminal and the second terminal perform data transmission through the through link channel; sending configuration information to the first terminal and/or the second terminal, so that the first terminal And transmitting, by the second terminal, the data transmission through the through link channel by using the first physical channel structure; the configuration information is used to indicate the first physical channel structure determined by the base station.
The base station according to claim 31, wherein the sending, by the processor, the configuration information to the first terminal and/or the second terminal comprises:

The third sending unit sends the configuration information to the first terminal and/or the second terminal by using broadcast signaling and/or RRC signaling.
A terminal, comprising: a processor, the processor performing the following process when executing a computer program stored in a memory:

Receiving a first indication message sent by the first terminal or configuration information sent by the base station; the first indication message is used to indicate that the first terminal and the second terminal determined by the first terminal perform data transmission through a through link channel The first physical channel structure that is required to be used; the configuration information is used to indicate a first physical channel structure that is required to be used by the first terminal and the second terminal to perform data transmission through the through link channel determined by the base station; The first physical channel structure performs data transmission with the first terminal through a through link channel.
A computer readable storage medium having stored thereon a computer program, wherein the computer program is executed by a processor to implement the steps of the method of any of claims 1-11.