A data transmission method, device, terminal and equipment

Abstract

The application discloses a data transmission method and device, a terminal and equipment, relates to the technical field of Internet of Vehicles, and is applied to the terminal. The method comprises the following steps: in the case of needing to acquire road safety information, at least one of the following is executed: adjusting a sensing mode from a partial sensing mode to a full sensing mode, listening to all time-frequency resources, and receiving the road safety information; acquiring target time-frequency resources through interaction with a first device, and receiving the road safety information on the target time-frequency resources; listening to first time-frequency resources, and receiving the road safety information; wherein, the first time-frequency resources comprise time-frequency resources in which the terminal expects the first device to send the road safety information, or the first time-frequency resources are preconfigured time-frequency resources. In this way, the terminal can acquire road safety information sent by other devices in time through sensing related time-frequency resources, potential collision risk warning failure can be avoided, the safe passing of the terminal can be ensured, and road safety hazards can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of Internet of Vehicles, and in particular to a data transmission method and device, a terminal and equipment. BACKGROUND

[0002] In Vehicle to Everything (V2X) communication, a Pedestrian UE (P-UE) including a pedestrian, a cyclist and a powered two-wheeler, etc. has only a low battery capacity and limited wireless capability and must work in a low-power mode, therefore, the P-UE generally adopts a partial sensing mode for sensing, however, the partial sensing can only sense part of time domain resources, or the P-UE adopts a Sidelink Discontinuous Reception (SL DRX) mechanism for receiving, in this way, the P-UE can only listen to part of subframes and can only partially obtain the position information of surrounding vehicles and vulnerable road users, and cannot further process V2X applications based on the obtained position information, for example, a potential collision risk warning for a vehicle, resulting in ineffective potential collision risk warning and failure to guarantee safe travel of the P-UE, which poses a great road safety hazard. SUMMARY

[0003] The present application aims to provide a data transmission method and device, a terminal and equipment, thereby solving the problem that the P-UE adopts the partial sensing mode and causes ineffective potential collision risk warning and road safety hazard.

[0004] In the first aspect, to achieve the above object, the present application provides a data transmission method applied to a terminal, comprising:

[0005] In the case of needing to obtain road safety information, at least one of the following is performed:

[0006] Adjusting a sensing mode from a partial sensing mode to a full sensing mode, listening to all time-frequency resources and receiving road safety information;

[0007] Obtaining a target time-frequency resource through interaction with a first device and receiving road safety information on the target time-frequency resource;

[0008] Listening to a first time-frequency resource and receiving road safety information; wherein the first time-frequency resource includes a time-frequency resource expected by the terminal for the first device to send road safety information, or the first time-frequency resource is a preconfigured time-frequency resource.

[0009] In a second aspect, to achieve the above object, an embodiment of the present application provides a data transmission method, applied to a first device, and comprising at least one of the following:

[0010] determining a target time-frequency resource through interaction with the terminal, wherein the target time-frequency resource is used to carry road safety information sent to the terminal;

[0011] determining a time-frequency resource used to send road safety information in a first time-frequency resource, and sending the road safety information, wherein the first time-frequency resource comprises a time-frequency resource in which the terminal expects the first device to send road safety information, or the first time-frequency resource is a preconfigured time-frequency resource.

[0012] In a third aspect, to achieve the above object, an embodiment of the present application provides a data transmission device, applied to a terminal, and comprising:

[0013] in a case where road safety information needs to be acquired, performing at least one of the following:

[0014] adjusting a perception mode from a partial perception mode to a full perception mode, listening to all time-frequency resources, and receiving road safety information;

[0015] acquiring a target time-frequency resource through interaction with the first device, and receiving road safety information on the target time-frequency resource;

[0016] listening to a first time-frequency resource, and receiving road safety information; wherein the first time-frequency resource comprises a time-frequency resource in which the terminal expects the first device to send road safety information, or the first time-frequency resource is a preconfigured time-frequency resource.

[0017] In a fourth aspect, to achieve the above object, an embodiment of the present application provides a data transmission device, applied to a first device, and comprising a processing module, configured to perform at least one of the following:

[0018] determining a target time-frequency resource through interaction with the terminal, wherein the target time-frequency resource is used to carry road safety information sent to the terminal;

[0019] determining a time-frequency resource used to send road safety information in a first time-frequency resource, and sending the road safety information, wherein the first time-frequency resource comprises a time-frequency resource in which the terminal expects the first device to send road safety information, or the first time-frequency resource is a preconfigured time-frequency resource.

[0020] In a fifth aspect, to achieve the above object, embodiments of the present application provide a terminal, comprising a transceiver, a memory, a processor, and a computer program stored in the memory and running on the processor, and the processor implements the data transmission method of the first aspect when executing the computer program.

[0021] In a sixth aspect, to achieve the above object, embodiments of the present application provide a first device, comprising a transceiver, a memory, a processor, and a computer program stored in the memory and running on the processor, and the processor implements the data transmission method of the second aspect when executing the computer program.

[0022] In a seventh aspect, to achieve the above object, embodiments of the present application provide a readable storage medium having a program or instructions stored thereon, and the program or instructions are executed by a processor to implement the data transmission method of the first aspect, or implement the data transmission method of the second aspect.

[0023] The above technical solutions of the present application have at least the following beneficial effects:

[0024] In the data transmission method of the embodiments of the present application, when the terminal needs to obtain road safety information, at least one of the following is executed: adjusting the perception mode from the partial perception mode to the full perception mode, listening to all time-frequency resources, and receiving the road safety information; obtaining the target time-frequency resource through interaction with the first device, and receiving the road safety information on the target time-frequency resource; listening to the first time-frequency resource, and receiving the road safety information; wherein the first time-frequency resource includes a time-frequency resource in which the terminal expects the first device to send the road safety information, or the first time-frequency resource is a preconfigured time-frequency resource. In this way, when the terminal needs to obtain road safety information, the terminal can obtain road safety information sent by other devices in time through perception of related time-frequency resources, avoid the situation that the potential collision risk warning is invalid, ensure the safe passage of the terminal, and reduce the road safety hidden danger. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 FIG. 1 is a schematic diagram of a full perception mechanism;

[0026] Figure 2 FIG. 2 is a schematic diagram of a partial perception mechanism;

[0027] Figure 3 FIG. 3 is a schematic diagram of a direct link DRX mechanism;

[0028] Figure 4 FIG. 4 is one of flowcharts of the data transmission method of the embodiments of the present application;

[0029] Figure 5 FIG. 5 is another of flowcharts of the data transmission method of the embodiments of the present application;

[0030] Figure 6 Fig. 1 is a schematic diagram of a data transmission device according to an embodiment of the present application;

[0031] Figure 7 Fig. 2 is another schematic diagram of a data transmission device according to an embodiment of the present application;

[0032] Figure 8 Fig. 3 is a schematic diagram of a terminal according to an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to make the technical problems solved by the present application, technical solutions and advantages clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help a comprehensive understanding of the embodiments of the present application. Therefore, it should be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, in order to be clear and concise, the description of known functions and structures is omitted.

[0034] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0035] In various embodiments of the present application, it should be understood that the size of the serial number of the following processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0036] In the embodiments provided by the present application, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that the determination of B according to A does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0037] In the description of the embodiments of the present application, first, some concepts used in the following description are explained.

[0038] In PC5 interface-based V2X communication, a terminal acquires resource occupation of other users through a sensing mechanism, and selects resources according to the sensing result. According to the sensing mode, it is divided into full sensing and partial sensing.

[0039] Full sensing:

[0040] Full sensing is primarily used for power-insensitive terminals such as vehicles and roadside units (RSUs). It continuously senses the channel after resource selection and before air interface transmission, reselecting resources upon detecting conflicts to avoid collisions caused by non-periodic services, thereby improving transmission reliability. The Full sensing mechanism in Long Term Evolution Vehicle to Everything (LTE-V2X) is as follows... Figure 1 As shown.

[0041] Partial sensing:

[0042] Considering the power consumption issues caused by continuous channel awareness by P-UEs, the 3rd Generation Partnership Project (3GPP) introduced a partial awareness mechanism in the LTE-V2X standard design. P-UEs performing partial awareness use the minimum number of candidate subframes Y configured by higher layers. min In the resource selection window, you can independently determine the positions of Y candidate subframes (Y≥Y). min By listening Based on the resource usage results on the subframe, candidate subframes are determined. Available resources on the network. The set of k values ​​is determined by higher-layer parameters. In the case that sidelink (SL) communication does not share a carrier with uplink and downlink transmissions, P... step The value is 100ms. The partial sensing mechanism of LTE-V2X is as follows: Figure 2 As shown.

[0043] Discontinuous Reception (DRX):

[0044] In the enhanced phase of New Radio Vehicle to Everything (NR-V2X), considering the diverse application scenarios of NR-V2X, power-saving mode UEs not only have transmitting needs but also receiving needs. To reduce the power consumption generated when power-saving mode UEs perform receiving operations, the DRX mechanism was introduced for the PC5 interface in the enhanced phase of NR-V2X.

[0045] The basic principle of the SL DRX mechanism is as follows: Figure 3As shown. Among them, the on duration (On Duration) represents the time period in which the UE monitors the sidelink control information (SCI), during which the receiving radio channel is open, and the UE continuously monitors the first stage SCI (1st-stage SCI) carried by the sidelink control channel and the second stage SCI (2nd-stage SCI) carried by the sidelink shared channel. In addition to the On Duration, the UE can skip the monitoring of SCI to achieve the purpose of power saving. The On Duration starts after the starting subframe of each DRX cycle is offset by drx-SlotOffset time slots, and its duration is configured by the high-layer parameter sl-drx-onDurationTimer.

[0046] Although SL DRX can achieve terminal power saving by reducing the time for the UE to monitor SCI, it will also have some impact on the perception and resource selection mechanism of the UE. For example, if the receiving UE adopts the DRX mechanism, the transmitting UE needs to consider the DRX configuration of the receiving UE in addition to considering the channel occupancy when performing resource selection, to ensure that the receiving UE can successfully monitor the SCI within the DRX On Duration.

[0047] Partial sensing mechanism and SL DRX mechanism belong to P-UE terminal power saving mechanism, and their main idea is to reduce the number of subframes monitored by the UE to achieve terminal power saving. When the two mechanisms work together, the sensing subframes of the partial sensing should be a subset of the On-During time of the SL DRX.

[0048] Whether it is the Partial sensing mechanism or the SL DRX mechanism, since the message sender (V-UE or P-UE) does not know the monitoring subframe time of the message receiver (P-UE), the P-UE can only partially obtain the position information of the surrounding vehicles and vulnerable road users, and cannot further process V2X applications based on the obtained position information, such as potential collision risk warning, which poses a great road safety hazard.

[0049] Based on the above, the embodiments of the present application provide a data transmission method, which is applied to a terminal, such as a vehicle, a pedestrian, a road infrastructure, etc. Figure 4 As shown, comprising:

[0050] Step 401, in the case of needing to obtain road safety information, at least one of the following is performed:

[0051] adjusting the sensing mode from the partial sensing mode to the full sensing mode, listening to all time-frequency resources, and receiving the road safety information; here, the terminal adjusts the sensing mode from the partial sensing mode for power saving to the full sensing mode, so as to listen to all time-frequency resources, thereby receiving the road safety information sent by other devices in time, obtaining the position information of surrounding vehicles and vulnerable road users, and further performing V2X application processing to realize potential collision risk warning and reduce road safety hazards;

[0052] obtaining a target time-frequency resource through interaction with a first device, and receiving the road safety information on the target time-frequency resource; here, the first device is, for example, a road side device (Road Side Unit, RSU) or a base station; and the target time-frequency resource can be a single time-frequency resource or a periodic time-frequency resource;

[0053] listening to a first time-frequency resource and receiving the road safety information; the first time-frequency resource includes a time-frequency resource in which the terminal expects the first device to send the road safety information, or the first time-frequency resource is a preconfigured time-frequency resource.

[0054] In the data transmission method of the embodiments of the present application, when the terminal needs to obtain road safety information, the terminal performs at least one of the following: adjusting the sensing mode from the partial sensing mode to the full sensing mode, listening to all time-frequency resources, and receiving the road safety information; obtaining a target time-frequency resource through interaction with a first device, and receiving the road safety information on the target time-frequency resource; and listening to a first time-frequency resource and receiving the road safety information; the first time-frequency resource includes a time-frequency resource in which the terminal expects the first device to send the road safety information, or the first time-frequency resource is a preconfigured time-frequency resource. In this way, when the terminal needs to obtain road safety information, the terminal can obtain road safety information sent by other devices in time through sensing related time-frequency resources, so as to obtain the position information of surrounding vehicles and vulnerable road users according to the road safety information, and further perform V2X application based on the obtained position information, realize potential collision risk warning, ensure safe driving, and reduce road safety hazards.

[0055] As an optional implementation, obtaining the target time-frequency resource through interaction with the first device includes:

[0056] sending a first message to the first device, the first message being used to request road safety information, and the first message including at least part of listening subframe information of the terminal in the partial sensing mode;

[0057] receiving a second message fed back by the first device, the second message including target time-frequency resources, wherein the target time-frequency resources are determined by sensing information of the first device and / or at least partial listening subframe information in the partial sensing mode of the terminal.

[0058] That is, the terminal sends a message for requesting road safety information to the first device, the message carrying partial or all listening subframe information of the terminal in the partial sensing mode, and the first device selects time-frequency resources for sending road safety information based on the listening subframe information carried in the message and / or sensing information of the first device after receiving the message.

[0059] Here, it should be noted that in this optional implementation, the first device is, for example, an RSU. Further, after the first device sends the second message to the terminal, it further sends road safety information on the selected time-frequency resources (carried in the second message) so that the terminal can listen to the time-frequency resources, thereby receiving the road safety information and further obtaining position information of surrounding vehicles and vulnerable road users according to the road safety information, and performing further V2X applications based on the obtained position information, realizing potential collision risk warning, ensuring safe passage, and reducing road safety hazards.

[0060] Further, the first message further includes at least one of the following related to the terminal: terminal type, terminal position, current traffic environment, moving speed, acceleration, angular velocity, and moving direction. In this way, the first device can determine the priority of the terminal based on these information, so as to allocate resources / prioritize sending road safety information to high-priority terminals based on priority when receiving first information sent by multiple terminals, thereby reducing road safety hazards of high-priority terminals.

[0061] Taking the first device as an RSU as an example, a specific implementation process of the above optional implementation (RSU selects time-frequency resources for road safety information according to its own sensing information and informs P-UE, and P-UE receives road safety information on the informed time-frequency resources) is described as follows:

[0062] 1. The P-UE sends a first message to the RSU, indicating a request for road safety information and carrying time-frequency resource information of the P-UE partial sensing listening subframe;

[0063] 2. After receiving the first message, the RSU determines time-frequency resources for sending road safety information according to its own sensing information, or according to at least partial listening subframe information of the terminal in the partial sensing mode carried in the first message, or according to the sensing information of the terminal in the partial sensing mode and the at least partial listening subframe information of the terminal in the partial sensing mode.

[0064] 3. The RSU determines to send a second message on a certain time-frequency resource position of the time-frequency resource of the P-UE Partial sensing monitoring subframe according to the sensing information of the RSU and the P-UE Partial sensing monitoring time-frequency resource information of the subframe, wherein the second message carries information of the time-frequency resource for sending the road safety information, and the time-frequency resource for sending the second message is located before the time-frequency resource for sending the road safety information;

[0065] 4. The RSU sends the road safety information on the time-frequency resource position determined in step 2.

[0066] 5. After receiving the second message, the P-UE monitors the specified time-frequency resource to receive the road safety information.

[0067] Further, when the first message includes information related to the terminal, if the RSU receives multiple first messages from multiple P-UE, the RSU determines the priority of each terminal according to the information related to each terminal, and preferentially sends the second message to the P-UE with higher priority.

[0068] As another optional implementation, the target time-frequency resource is obtained through interaction with the first device, including:

[0069] In the case where the first device is a base station, a third message is sent to the first device, the third message being used to request allocation of a time-frequency resource for carrying road safety information, wherein the third message includes at least one of the following information related to the terminal: terminal type, terminal position, current traffic environment, moving speed, acceleration, angular velocity and moving direction; here, the first device can determine the RSU related to the terminal based on the at least one of the above information related to the terminal, and allocate time-frequency resources for sending road safety information to each determined RSU; wherein the terminal can send the third message to the base station through the Uu interface, or the terminal can send the third message to the base station through the PC5 interface; wherein when the terminal interacts with the base station through the PC5 interface, in one case, the third message does not carry any time-frequency resource information, and the terminal continuously monitors the subframe after sending the third message until receiving the fourth message fed back by the base station; in another case, the third message carries the time-frequency resource on which the terminal expects the base station to send the fourth message, and the base station sends the fourth message on the time-frequency resource on which the terminal expects the base station to send the fourth message, and the terminal monitors and receives the fourth message on the time-frequency resource;

[0070] receiving a fourth message fed back by the first device, the fourth message comprising: time-frequency resources for transmitting road safety information allocated by the first device for a plurality of roadside units (RSUs), or the fourth message comprising: discontinuous reception (DRX) configuration information of the terminal; wherein the DRX configuration information is related to time-frequency resources for transmitting road safety information allocated for each of the RSUs;

[0071] determining the target time-frequency resource according to the time-frequency resources for transmitting road safety information allocated by the first device for the plurality of RSUs or the DRX configuration information of the terminal. For example, the target time-frequency resource is a time domain resource corresponding to an On Duration phase in the time-frequency resources allocated by the first device for each of the RSUs or the DRX configuration information.

[0072] Here, one specific implementation process of the optional implementation manner described above is explained (the base station uniformly allocates time-frequency resources for transmitting road safety information according to the request of the P-UE, and informs the RSU associated with the requesting P-UE of the allocated time-frequency resources. At the same time, the base station feeds back road safety information receiving configuration to the requesting P-UE, and the receiving configuration can be time-frequency resources for receiving road safety information, or DRX configuration). The specific steps are as follows:

[0073] 1. The P-UE sends a third message to the base station to request allocation of time-frequency resources for road safety information, and carries at least one of the following related to the P-UE: terminal type, terminal location, current traffic environment, moving speed, acceleration, angular speed and moving direction. As described above, the P-UE can send the third message to the base station through the Uu interface or the PC5 interface;

[0074] 2. The base station determines the RSU associated with the P-UE according to at least one of the following related to the P-UE: terminal type, terminal location, current traffic environment, moving speed, acceleration, angular speed and moving direction. There can be multiple RSUs associated with the P-UE;

[0075] 3. The base station allocates time-frequency resources for road safety information, wherein different RSUs can be allocated different time-frequency resources to avoid resource collision between different RSUs;

[0076] 4. The base station sends a sixth message to the RSU, carrying the time-frequency resources for road safety information allocated for the RSU;

[0077] 5. The base station sends a fourth message to the P-UE, carrying the time-frequency resources for road safety information allocated for all associated RSUs or the DRX configuration of the P-UE; the DRX configuration of the P-UE is determined according to the time-frequency resources for road safety information;

[0078] 6. After receiving the sixth message, the RSU transmits the road safety information on the specified time-frequency resource;

[0079] 7. After receiving the fourth message, the P-UE listens on the specified time-frequency resource or according to the DRX configuration to receive the road safety information.

[0080] As a further specific implementation, when the first time-frequency resource is a pre-configured time-frequency resource, the pre-configured time-frequency resource is a first number of continuous subframes selected in each first time length from a pre-configured starting time.

[0081] Here, it should be noted that when the first time-frequency resource is a pre-configured time-frequency resource, one or more sets of time-frequency resources can be configured for the terminal and the first device. Since the first device is a relatively fixed device, one set of time-frequency resources can be configured for the first device. Since the terminal is a mobile device, multiple sets of time-frequency resources can be configured for the terminal, and each set of time-frequency resources corresponds to a certain geographic area. The terminal can select a pre-configured time-frequency resource based on its location, and the time-frequency resource selected by the terminal is the same as the time-frequency resource of the first device with which it interacts.

[0082] Further, as an optional implementation, before listening to the first time-frequency resource to receive the road safety information, the method further comprises:

[0083] sending a fifth message to the first device, the fifth message being used to request the road safety information. Wherein,

[0084] The first case: the fifth message can not carry any parameters. In this case, it can be determined that the road safety information is obtained from the first device based on the pre-configured time-frequency resource. Thus, the specific process is as follows: the terminal sends the fifth message to the first device, and the first device responds to the fifth message and sends the road safety information to the terminal based on the pre-configured time-frequency resource; the terminal listens to the pre-configured time-frequency resource to receive the road safety information sent by the first device.

[0085] The implementation process of a specific example (pre-configured time-frequency resource of road safety information) for this case is as follows:

[0086] 1. Pre-configure the time-frequency resource of road safety information on the P-UE and the first device (base station or RSU);

[0087] 2. The P-UE sends a fifth message to indicate that the road safety information is requested;

[0088] 3. After receiving the fifth message, the base station or RSU transmits the road safety information on the pre-configured time-frequency resource;

[0089] 4. The P-UE listens on the preconfigured time-frequency resource to receive the road safety information;

[0090] The second case: when the first time-frequency resource includes the time-frequency resource where the terminal expects the first device to send the road safety information, the fifth message includes information of at least part of the time-frequency resource in the first time-frequency resource, so that the specific process is: the terminal sends the fifth message to the first device, the first device determines the target time-frequency resource in the at least part of the time-frequency resource based on the information of at least part of the time-frequency resource in the first time-frequency resource included in the fifth message and information such as time-frequency resources currently occupied by the first device, and then the first device sends the road safety information on the target time-frequency resource, and the terminal listens to the at least part of the time-frequency resource to receive the road safety information sent by the first device.

[0091] The implementation process of a specific example (the first device (RSU) determines the time-frequency resource of the road safety information according to the time-frequency resource position where the P-UE expects the RSU to send the road safety information) is as follows:

[0092] 1. The P-UE sends the fifth message to the RSU to indicate the request for the road safety information, and carries the time-frequency resource where the RSU is expected to send the road safety information; wherein the time-frequency resource where the RSU is expected to send the road safety information is determined by the P-UE according to the partial sensing subframe position;

[0093] 2. After the RSU receives the fifth message, the RSU determines one or more time-frequency resources according to the time-frequency resource where the RSU is expected to send the road safety information and information such as time-frequency resources currently occupied by the RSU;

[0094] 3. The RSU sends the road safety information on the determined time-frequency resource;

[0095] 4. The P-UE listens to the partial sensing subframe to receive the road safety information.

[0096] The third case: when the first time-frequency resource includes the time-frequency resource in which the terminal expects the first device to send road safety information, the fifth message includes information of at least part of the time-frequency resource in the first time-frequency resource and at least one of the following information related to the terminal: terminal type, terminal location, current traffic environment, moving speed, acceleration, angular velocity and moving direction. In this case, the specific process is: the terminal sends the fifth message to the first device, the first device receives the fifth message sent by multiple terminals, the first device determines the priority of each terminal according to at least one of the information related to the terminal included in the fifth message, and based on the priority, the first device determines the RSU associated with the terminal with higher priority preferentially, and allocates time-frequency resources for the RSU to send road safety information, and sends the allocated time-frequency resources to the terminal and the RSU, so that the RSU sends road safety information to the high-priority terminal using the time-frequency resources allocated to it.

[0097] A specific implementation process of the third case is as follows:

[0098] 1. The P-UE sends the fifth message to the RSU, indicating that the road safety information is requested, and carrying the time-frequency resource in which the RSU is expected to send the road safety information; wherein the time-frequency resource in which the RSU is expected to send the road safety information is determined by the P-UE according to the partial sensing subframe position;

[0099] 2. After the RSU receives the fifth message sent by multiple terminals, the priority of each terminal is determined according to the information related to the terminal, and one or more time-frequency resources are determined for each terminal according to the priority, the time-frequency resource in which the RSU is expected to send the road safety information by each terminal, and the time-frequency resource occupied by the current service;

[0100] 3. The RSU sends road safety information on the determined time-frequency resource;

[0101] 4. The P-UE performs listening in the partial sensing subframe to receive road safety information.

[0102] Here, it should be noted that in the second and third cases, if the current service contains road safety information, and the time-frequency resource in which the RSU is expected to send road safety information intersects with the time-frequency resource occupied by the road safety information, and the number of time-frequency resources in the intersection meets the minimum transmission resource requirement, then there is no need to reselect the road safety information time-frequency resource, and the time-frequency resource occupied by the road safety information is continued to be used;

[0103] If the current service contains road safety information, and the intersection of the time-frequency resources expected to be used by the RSU to transmit the road safety information and the time-frequency resources already occupied by the road safety information exists, but the number of time-frequency resources in the intersection does not meet the minimum transmission resource requirement, the time-frequency resources of the road safety information need to be re-determined. Specifically:

[0104] The RSU determines a candidate time-frequency resource set of the road safety information according to the time-frequency resources expected to be used by the RSU to transmit the road safety information and the time-frequency resources already occupied by the current service. The candidate time-frequency resource set is the time-frequency resources remaining after the time-frequency resources expected to be used by the RSU to transmit the road safety information are removed from the time-frequency resources already occupied by the current service;

[0105] The RSU determines the number of time-frequency resources to be added, and selects a corresponding number of time-frequency resources from the candidate time-frequency resource set of the road safety information;

[0106] The RSU takes the union of the added time-frequency resources and the resources already occupied by the current road safety information as the re-determined time-frequency resources of the road safety information;

[0107] If the current service does not contain road safety information, the time-frequency resources of the road safety information need to be determined. Specifically:

[0108] The RSU determines a candidate time-frequency resource set of the road safety information according to the time-frequency resources expected to be used by the RSU to transmit the road safety information and the time-frequency resources already occupied by the current service. The candidate time-frequency resource set is the time-frequency resources remaining after the time-frequency resources expected to be used by the RSU to transmit the road safety information are removed from the time-frequency resources already occupied by the current service;

[0109] The RSU selects one or more time-frequency resources from the candidate time-frequency resource set. The number of time-frequency resources depends on the minimum transmission resource requirement.

[0110] The RSU takes the union of the added time-frequency resources and the resources already occupied by the current road safety information as the re-determined time-frequency resources of the road safety information;

[0111] Further, if the RSU receives a plurality of fifth messages sent by P-UEs, when determining the time-frequency resources, the RSU first integrates all received time-frequency resources expected to be used by the RSU to transmit the road safety information, determines the P-UEs expected to be received corresponding to each time-frequency resource, and preferentially selects time-frequency resources with a larger number of P-UEs expected to be received when selecting (adding) resources.

[0112] Further, as an optional implementation, the method further includes:

[0113] In any of the following cases, it is determined that road safety information needs to be obtained:

[0114] Receiving the enabling operation of the user; that is, one case is that the terminal user enables the terminal, i.e. requires to acquire the safety information of the surrounding vehicles and vulnerable road users, and the terminal (P-UE) determines to acquire the safety information of the surrounding vehicles and vulnerable road users; another case is that the terminal user cancels the enabling operation of the terminal, i.e. no longer requires to acquire the safety information of the surrounding vehicles and vulnerable road users, and the terminal (P-UE) determines not to acquire the safety information of the surrounding vehicles and vulnerable road users;

[0115] According to the electronic fence information, the map information and the position coordinates of the terminal, determining that the traffic environment where the terminal is located is a preset complex traffic environment; that is, the P-UE determines the traffic environment where the current position is located according to the electronic fence information, the map information and the position coordinates, one case is that when the traffic environment where the P-UE is located belongs to the complex traffic environment, the P-UE determines to acquire the safety information of the surrounding vehicles and vulnerable road users. Another case is that when the traffic environment where the P-UE is located does not belong to the complex traffic environment, the P-UE determines not to acquire the safety information of the surrounding vehicles and vulnerable road users. Here, the preset complex traffic environment includes but is not limited to at least one of the following: pedestrian crossing; road fork; road intersection; intersection without traffic lights; accident-prone road section; path crossing the road; and mixed vehicle road section, etc.

[0116] According to the electronic fence information, the map information, the position coordinates of the terminal and the moving direction of the terminal, determining that the traffic environment that the terminal will pass through is a preset complex traffic environment; that is, the P-UE determines the moving track according to the electronic fence information, the map information, the position coordinates and the moving direction, and determines the traffic environment that will be passed through according to the moving track, one case is that when the traffic environment that will be passed through belongs to the complex traffic environment, the P-UE determines to acquire the safety information of the surrounding vehicles and vulnerable road users; another case is that when the traffic environment that will be passed through does not belong to the complex traffic environment, the P-UE determines not to acquire the safety information of the surrounding vehicles and vulnerable road users;

[0117] The moving speed of the terminal is greater than a first threshold; that is, when the moving speed of the P-UE exceeds the first threshold, the P-UE determines to acquire the safety information of the surrounding vehicles and vulnerable road users, otherwise, it does not need to acquire the safety information of the surrounding vehicles and vulnerable road users;

[0118] The remaining power of the terminal is greater than a second threshold; that is, one case is that the P-UE determines to acquire the safety information of the surrounding vehicles and vulnerable road users according to the remaining power of the device, when the remaining power of the P-UE device is greater than the second threshold; another case is that the P-UE determines to acquire the safety information of the surrounding vehicles and vulnerable road users according to the remaining power of the device, when the remaining power of the P-UE device is less than or equal to the second threshold.

[0119] Further, as an optional implementation, the road safety information further comprises first indication information, the first indication information being used for indicating time-frequency resources for sending next road safety information. That is, if the time-frequency resources for sending road safety information change, for example, resource reselection of road safety information, the time-frequency resources for sending next road safety information are indicated in the road safety information.

[0120] The embodiment of the application further provides a data transmission method, applied to a first device, for example, the first device is an RSU or a base station, etc. Figure 5 As shown in the figure, the method comprises the following steps:

[0121] The target time-frequency resources are determined through interaction with the terminal, wherein the target time-frequency resources are used for carrying road safety information sent to the terminal;

[0122] The time-frequency resources for sending road safety information are determined in the first time-frequency resources, and the road safety information is sent, wherein the first time-frequency resources comprise time-frequency resources expected by the terminal for the first device to send road safety information, or the first time-frequency resources are preconfigured time-frequency resources.

[0123] In the embodiment of the application, the first device determines target time-frequency resources for carrying road safety information sent to the terminal through interaction with the terminal, so that the terminal can acquire road safety information by listening to the target time-frequency resources, or the first device sends road safety information to the terminal based on preconfigured time-frequency resources or time-frequency resources expected by the terminal. The above two modes can enable the terminal to acquire road safety information in time by listening to time-frequency resources, to know the position information of surrounding vehicles and vulnerable road users, and to further perform V2X application based on the known position information, to realize potential collision risk warning, to ensure safe passage, and to reduce road safety hazards.

[0124] As an optional implementation, the target time-frequency resources are determined through interaction with the terminal, comprising:

[0125] receiving a first message sent by the terminal, the first message being used to request road safety information, and the first message including at least partial listening subframe information of the terminal in the partial sensing mode; that is, the terminal can request the first device for road safety information based on its own needs, and carries the subframe information that the terminal can listen to in the request, so that the terminal does not need to adjust the parameter information of the partial sensing mode;

[0126] determining the target time-frequency resource according to the at least partial listening subframe information of the terminal in the partial sensing mode and / or the sensing information of the first device; in this way, the first device can determine the time-frequency resource for sending road safety information to the terminal based on the request of the terminal, so that the terminal can obtain the required information in time.

[0127] Further, as an optional implementation, the first message further includes at least one of the following related to the terminal: terminal type, terminal position, current traffic environment, moving speed, acceleration, angular speed and moving direction;

[0128] wherein the target time-frequency resource is determined according to the at least partial listening subframe information of the terminal in the partial sensing mode and / or the sensing information of the first device, including:

[0129] In the case of receiving a plurality of first messages sent by the terminals, the priority of each terminal is determined according to at least one of the terminal type, the terminal position, the current traffic environment, the moving speed, the acceleration and the angular speed; here, the priority of the terminal is related to the order in which the first device sends road safety information to each terminal (that is, the priority of the terminal is related to the urgency of the terminal to obtain road safety information); in addition, the current traffic environment of the terminal can be directly provided by the terminal, or can be determined by the first device based on other parameters carried in the first message, for example, at least one of the position, moving speed, acceleration and angular speed of the terminal, and map information or electronic fence, etc.

[0130] According to the priority of the terminal, the target time-frequency resource of each terminal is determined according to the at least partial listening subframe information of each terminal in the partial sensing mode and / or the sensing information of the first device in turn.

[0131] Further, as an optional implementation, after determining the target time-frequency resource according to the at least partial listening subframe information of the terminal in the partial sensing mode and / or the sensing information of the first device, the method further includes:

[0132] determining the sending time-frequency resource of the second message according to the at least partial listening subframe information of the terminal in the partial sensing mode and the sensing information of the first device.

[0133] feedback a second message to the terminal on the time-frequency resource on which the second message is sent, wherein the second message comprises the target time-frequency resource; here, the target time-frequency resource can be one or more of the subframe information listened to by the terminal, so that the terminal does not need to adjust the partial sensing parameter information; or the target time-frequency resource can also be one or more (for example, not the subframe information listened to by the terminal) determined according to the sensing information of the first device, so that the terminal needs to adjust its own partial sensing parameter according to the second message; in addition, the time-frequency resource on which the first device sends the second message is the time-frequency resource in the subframe information carried in the first message;

[0134] sending the road safety information on the target time-frequency resource.

[0135] As another optional implementation, the target time-frequency resource is determined through interaction with the terminal, comprising:

[0136] In the case where the first device is a base station, receiving a third message sent by the terminal, wherein the third message is used to request allocation of a time-frequency resource carrying road safety information, and the third message comprises at least one of the following information related to the terminal: terminal type, terminal position, current traffic environment, moving speed, acceleration, angular velocity and moving direction;

[0137] determining a plurality of RSUs associated with the terminal according to at least one of the terminal type, the terminal position, the current traffic environment, the moving speed, the acceleration, the angular velocity and the moving direction; here, the RSU associated with the terminal is an RSU near the terminal or an RSU to be passed through by the terminal, that is, an RSU in the traffic environment in which the terminal is located;

[0138] allocating a time-frequency resource for sending road safety information to each of the RSUs, wherein the target time-frequency resource comprises the time-frequency resource allocated by the first device for each of the RSUs; here, in order to avoid resource collision between different RSUs, the resource allocated by the base station for each RSU in this step can be different time-frequency resources;

[0139] In this optional implementation, the first device is a base station, and the base station is used to allocate a time-frequency resource for carrying road safety information; if the road safety information is sent by an RSU, the base station allocates a time-frequency resource for each RSU associated with the terminal; in addition, if the road safety information is sent by the base station, the base station can directly determine the time-frequency resource on which the road safety information is sent to the terminal, wherein this optional implementation is described in the mode of allocating road safety information by an RSU.

[0140] Further, based on the optional implementation manner above, after the target time-frequency resource is determined through the interaction with the terminal, the method further includes:

[0141] sending a sixth message to each of the RSUs, the sixth message including the time-frequency resource allocated to the RSU by the base station, the sixth message being used to instruct each of the RSUs to send road safety information on the time-frequency resource included in the sixth message; in this way, each RSU can send road safety information to the terminal based on the acquired time-frequency resource;

[0142] feeding back a fourth message to the terminal, the fourth message including the time-frequency resource allocated to each of the RSUs by the first device, or the fourth message including discontinuous reception (DRX) configuration information of the terminal; wherein the DRX configuration information is related to the time-frequency resource allocated to each of the RSUs by the first device; in this way, the terminal can listen to the time-frequency resource allocated to each RSU by the base station, or listen based on the DRX configuration information, to acquire road safety information sent by each RSU.

[0143] As an optional implementation manner, the step of determining, in the first time-frequency resource, a time-frequency resource for sending road safety information includes:

[0144] when the first time-frequency resource is a preconfigured time-frequency resource, selecting a first number of continuous subframes in each first time length from a preconfigured starting time point;

[0145] determining, as an offset value, a first value obtained by taking the identity of the first device as a modulus of the first number; that is, the first device identity is taken as a modulus of the first number as the offset;

[0146] acquiring, according to the offset value, a time-frequency resource for sending road safety information in the first number of continuous subframes, that is, in the first number of continuous subframes, the time-frequency resource corresponding to the offset value is the time-frequency resource for sending road safety information.

[0147] In this step, the time-frequency resource for sending road safety information is selected in the preconfigured time-frequency resource, so that the terminal can listen to the preconfigured time-frequency resource based on the preconfigured information, thereby acquiring road safety information in time.

[0148] As an optional implementation manner, before the time-frequency resource for sending road safety information is determined in the first time-frequency resource and the road safety information is sent, the method further includes:

[0149] receiving a fifth message sent by the terminal, the fifth message being used to request road safety information.

[0150] As a specific example, the terminal sends a fifth message for requesting road safety information to the first device, and the first device determines time-frequency resources for sending road safety information according to pre-configured time-frequency resources and sends road safety information to the terminal in response to the fifth message.

[0151] As another optional implementation, when the first time-frequency resources include time-frequency resources in which the terminal expects the first device to send road safety information, the fifth message includes information of at least part of the time-frequency resources in the first time-frequency resources, or the fifth message includes information of at least part of the time-frequency resources in the first time-frequency resources and at least one of the following related to the terminal: terminal type, terminal location, current traffic environment, moving speed, acceleration, angular speed and moving direction.

[0152] Here, when the fifth message includes information of at least part of the time-frequency resources in the first time-frequency resources, the first device can determine one or more time-frequency resources for sending road safety information based on information of time-frequency resources carried in the fifth message and information such as time-frequency resources already occupied by the first device.

[0153] In the first time-frequency resources, the time-frequency resources for sending road safety information are determined, including:

[0154] In the case of receiving a plurality of fifth messages sent by the terminals, and the plurality of fifth messages include at least one of the following related to the terminal: terminal type, terminal location, current traffic environment, moving speed, acceleration, angular speed and moving direction, the priority of each terminal is determined according to at least one of the terminal type, the terminal location, the current traffic environment, the moving speed, the acceleration and the angular speed.

[0155] According to the priority of the terminal, the time-frequency resources for sending road safety information are determined for each terminal in the first time-frequency resources corresponding to each terminal in turn.

[0156] That is, in the case of receiving a plurality of fifth messages sent by the terminals, the time-frequency resources for sending road safety information corresponding to the terminals are determined in priority for the terminals with higher priority based on the priority of the terminals. It should be noted that the terminals with higher priority are terminals with relatively urgent demand for road safety information.

[0157] As an optional implementation, in the case that the time-frequency resource for sending the road safety information needs to be changed, the road safety information further comprises first indication information, the first indication information being used for indicating the time-frequency resource for sending next road safety information. Here, by adding the time-frequency resource for sending next road safety information in the road safety information, the terminal can receive the road safety information in time, so as to ensure the safe passing of itself.

[0158] Next, the specific embodiments for implementing the transmission of the road safety information in the embodiments of the present application are described:

[0159] Embodiment 1: P-UE adjusts the sensing mode of itself to obtain road safety information (the terminal switches the sensing mode from partial sensing mode to full sensing mode)

[0160] The P-UE user is driving at high speed, considers the safety of itself, starts the potential collision risk warning application, and enables the reception of road safety information; the P-UE switches the sensing mode: from partial sensing mode to full sensing mode; the P-UE continuously monitors each subframe, receives the basic safety information (Basic Safety Message, BSM) sent by the surrounding vehicles and the pedestrian safety information (Pedestrian Safety Message, PSM) sent by the vulnerable road users.

[0161] The P-UE user is no longer driving at high speed, closes the potential collision risk warning application, and no longer receives road safety information; the P-UE switches the sensing mode: from full sensing mode to partial sensing mode.

[0162] Embodiment 2: P-UE and RSU pre-configure the time-frequency resource of road safety information (send road safety information based on pre-configured time-frequency resource)

[0163] The time-frequency resource of road safety information is pre-configured on the P-UE and the RSU, such as: the first 10 subframes of every 100 physical subframes are configured for the transmission of road safety information;

[0164] The P-UE determines that it is currently at a road fork according to the map information and the current position coordinates, and thus needs to obtain the safety information of the surrounding vehicles and the vulnerable road users;

[0165] The P-UE sends the fifth message (the fifth message can not carry any parameters) to indicate the request for road safety information;

[0166] The RSU receives the fifth message, determines that there is a P-UE requesting road safety information according to the message indication and the UE ID of the P-UE;

[0167] The RSU determines a subframe offset of 1 according to its UE ID modulo 10, and determines to transmit road safety information on the second subframe of every 100 physical subframes;

[0168] The P-UE listens on the first 10 subframes of every 100 physical subframes, and receives road safety information on the second subframe.

[0169] Embodiment 3: The base station uniformly allocates time-frequency resources for road safety information; the process is described as follows:

[0170] The P-UE determines, according to map information, position coordinates, and a moving direction, that the moving trajectory is a path crossing a road, and thus needs to obtain safety information of surrounding vehicles and vulnerable road users;

[0171] The P-UE sends a third message to the base station, requesting allocation of time-frequency resources for road safety information, and carrying information such as P-UE position, moving direction, and moving speed;

[0172] After receiving the third message, the base station determines, according to the message indication and the UE ID of the P-UE, that the P-UE requests road safety information;

[0173] The base station determines, according to information such as P-UE position, moving direction, and moving speed, that RSUs that need to send road safety information to the P-UE on the moving trajectory of the P-UE are RSU1, RSU2, and RSU3;

[0174] The base station allocates time-frequency resources for RSU1, RSU2, and RSU3 to send road safety information: the base station determines, according to the coverage range of the RSUs, that RSU1 does not have intersection coverage with RSU2 and RSU3, and RSU2 has intersection coverage with RSU3, and thus determines that the time-frequency resources for RSU1 and RSU2 to send road safety information are subframes 1 and 2, the time-frequency resources for RSU3 to send road safety information are subframes 3 and 4, and the period is 100 ms;

[0175] The base station sends a sixth message to RSU1, RSU2, and RSU3 respectively, carrying the time-frequency resources for road safety information;

[0176] The base station sends a fourth message to the P-UE, carrying a set of time-frequency resources for road safety information, i.e., subframes 1, 2, 3, and 4, and the period is 100 ms;

[0177] After receiving the sixth message, RSU1 and RSU2 send road safety information on subframes 1 and 2 every 100 ms, and RSU3 sends road safety information on subframes 3 and 4 every 100 ms;

[0178] After receiving the fourth message, the P-UE performs listening on subframes 1, 2, 3, and 4 to receive road safety information.

[0179] In embodiment 4, the RSU determines the time-frequency resources of the road safety information according to the time-frequency resources in which the P-UE expects the RSU to send the road safety information, and the process is described as follows:

[0180] The P-UE determines, according to the moving speed of the P-UE, that the current moving speed exceeds 40Km / h, and the speed is relatively high, and thus needs to acquire safety information of surrounding vehicles and vulnerable road users;

[0181] The P-UE sends a fifth message to the RSU, indicating a request for road safety information and carrying time-frequency resources in which the P-UE expects the RSU to send the road safety information. Because the P-UE performs partial sensing listening on subframes 4-10, the P-UE expects the RSU to send the road safety information on subframes 4-10 with a period of 100ms;

[0182] After receiving the fifth message, the RSU determines, according to the message indication and the UE ID of the P-UE, that the P-UE requests road safety information;

[0183] The RSU determines subframes 7 and 8 as the time-frequency resources for sending the road safety information according to the time-frequency resources in which the P-UE expects the RSU to send the road safety information and current time-frequency resources occupied by services, and the period is 100ms;

[0184] The RSU sends the road safety information on subframes 7 and 8 every 100ms;

[0185] The P-UE performs listening on subframes 4-10 and receives the road safety information on subframes 7 and 8.

[0186] In embodiment 5, the RSU selects the time-frequency resources of the road safety information according to sensing information of the RSU and informs the P-UE, and the process is described as follows:

[0187] The P-UE determines, according to the moving speed of the P-UE, that the current moving speed exceeds 40Km / h, and the speed is relatively high, and thus needs to acquire safety information of surrounding vehicles and vulnerable road users;

[0188] The P-UE sends a first message to the RSU, indicating a request for road safety information and carrying time-frequency resource information of a partial sensing listening subframe (subframes 4-10 with a period of 100ms);

[0189] After receiving the first message, the RSU determines, according to the message indication and the UE ID of the P-UE, that the P-UE requests road safety information;

[0190] RSU determines the time-frequency resources for sending road safety information as subframes 21 and 24 with a period of 100 ms according to its own sensing information;

[0191] RSU sends a response of the sixth message on subframe 8, carrying the time-frequency resources for sending road safety information;

[0192] P-UE performs partial sensing on subframes 4-10, and receives the response of the sixth message on subframe 8, and determines to monitor subframes 21 and 24 to obtain road safety information. In order to reduce power consumption caused by monitoring on and off, the P-UE can continuously monitor on subframes 21, 22, 23 and 24;

[0193] RSU sends road safety information on subframes 21 and 24 every 100 ms period;

[0194] P-UE receives road safety information on subframes 21 and 24;

[0195] Due to resource reselection of road safety information, RSU changes the time-frequency resources for sending road safety information, and determines the time-frequency resources for sending road safety information as subframes 31 and 34;

[0196] RSU sends road safety information on subframes 21 and 24, and indicates the change of time-frequency resources, and the next time-frequency resource position is subframes 31 and 34;

[0197] P-UE receives road safety information on subframes 21 and 24, and learns that the next time-frequency resource position is subframes 31 and 34, and determines to monitor subframes 31 and 34 to obtain road safety information in the next 100 ms period, and no longer monitors subframes 21 and 24.

[0198] Embodiment 6: RSU processing of P-UE priority, the process is described as follows:

[0199] Due to its own device capability, time-frequency resource occupation, etc., for example, the road safety information requested by the P-UE should not affect the normal business of the RSU, and the RSU can allocate at most 10 time-frequency resources for sending road safety information;

[0200] The current RSU has allocated 8 time-frequency resources for sending road safety information: subframes 11-14, 16-19, with a period of 100 ms.

[0201] P-UE1 determines the moving trajectory as a path crossing the road according to map information, position coordinates and moving direction, and therefore needs to obtain safety information of surrounding vehicles and vulnerable road users, and the P-UE priority is 1;

[0202] P-UE1 sends the fifth message to the RSU, indicating a request for road safety information, and carrying the time-frequency resources expected to be used by the RSU to send the road safety information. Because the P-UE Partial sensing monitoring subframe position is subframes 4-10, and the P-UE sends the PSM message in subframes 6 and 8, the time-frequency resources expected to be used by the RSU to send the road safety information are subframes 4, 5, 7, 9, and 10, with a period of 100 ms.

[0203] P-UE2 determines, according to the P-UE2 moving speed, that the current moving speed exceeds 40 Km / h, and the speed is fast, so it needs to obtain the safety information of surrounding vehicles and vulnerable road users, and the P-UE priority is 2.

[0204] P-UE1 sends the fifth message to the RSU, indicating a request for road safety information, and carrying the time-frequency resources expected to be used by the RSU to send the road safety information. Because the P-UE Partial sensing monitoring subframe position is subframes 4-10, and the P-UE sends the PSM message in subframes 9 and 10, the time-frequency resources expected to be used by the RSU to send the road safety information are subframes 4, 5, 6, 7, and 8, with a period of 100 ms.

[0205] The RSU receives the fifth message from P-UE1 and P-UE2 respectively, and determines, according to the message indication and the UE ID of the P-UE, that there is a P-UE requesting road safety information.

[0206] The RSU determines, according to the time-frequency resources expected to be used by the RSU to send the road safety information and the time-frequency resources currently occupied by the current service (subframes 4, 7, 8, and 10 are currently occupied by the service), that the time-frequency resources available for sending the road safety information are subframes 5, 6, and 9, but the RSU can allocate at most 2 subframes for sending the road safety information. Therefore, the RSU can select subframes 5 and 9, or select 5 and 6. However, because the priority of P-UE1 is higher than that of P-UE2, P-UE1 should be given priority to receive the road safety information, so the RSU selects subframes 5 and 9 this time.

[0207] The RSU sends the road safety information on subframes 5, 9, 11-14, and 16-19 every 100 ms.

[0208] P-UE1 monitors subframes 4-10, and receives the road safety information on subframes 5 and 9.

[0209] P-UE2 monitors subframes 4-10, and receives the road safety information on subframe 5, but cannot receive the road safety information on subframe 9, and decoding failure of the road safety information received on subframe 5 may occur.

[0210] The application proposes a judgment criterion for whether a P-UE needs to acquire safety information of surrounding vehicles and vulnerable road users, and five methods for the P-UE to acquire the safety information of the surrounding vehicles and vulnerable road users, solving the problem that a current P-UE low-power consumption device cannot acquire the position information of surrounding vehicles and vulnerable road users due to only sensing part of time domain resources, cannot guarantee its own safe travel, and has great road safety risks.

[0211] The application also provides a data transmission apparatus applied to a terminal, as shown in the figure, comprising: Figure 6

[0212] The processing module 601 is configured to perform at least one of the following in the case of needing to acquire road safety information:

[0213] adjusting the sensing mode from the partial sensing mode to the full sensing mode, listening to all time-frequency resources, and receiving the road safety information;

[0214] acquiring a target time-frequency resource through interaction with a first device, and receiving the road safety information on the target time-frequency resource;

[0215] listening to a first time-frequency resource and receiving the road safety information; wherein the first time-frequency resource comprises a time-frequency resource in which the terminal expects the first device to send the road safety information, or the first time-frequency resource is a preconfigured time-frequency resource.

[0216] Optionally, when acquiring the target time-frequency resource through interaction with the first device, the processing module 601 is specifically configured to:

[0217] sending a first message to the first device, wherein the first message is used for requesting the road safety information, and the first message comprises at least part of listening subframe information of the terminal in the partial sensing mode;

[0218] receiving a second message fed back by the first device, wherein the second message comprises the target time-frequency resource, and the target time-frequency resource is determined by sensing information of the first device and / or at least part of the listening subframe information of the terminal in the partial sensing mode.

[0219] Optionally, the first message further comprises at least one of the following related to the terminal: terminal type, terminal position, current traffic environment, moving speed, acceleration, angular speed and moving direction.

[0220] Optionally, when acquiring the target time-frequency resource through interaction with the first device, the processing module 601 is specifically configured to:

[0221] ​In a case that the first device is a base station, a third message is sent to the first device, the third message being used for requesting to allocate time-frequency resources for carrying road safety information, wherein the third message comprises at least one of the following information related to the terminal: terminal type, terminal location, current traffic environment, moving speed, acceleration, angular speed and moving direction;

[0222] A fourth message fed back by the first device is received, the fourth message comprising: time-frequency resources allocated by the first device for a plurality of road side units (RSUs) to send road safety information, or the fourth message comprising: discontinuous reception (DRX) configuration information of the terminal; wherein the DRX configuration information is related to time-frequency resources allocated by the first device for each of the RSUs to send road safety information;

[0223] The target time-frequency resources are determined according to the time-frequency resources allocated by the first device for the plurality of RSUs to send road safety information or the DRX configuration information of the terminal.

[0224] Optionally, in a case that the first time-frequency resources are preconfigured time-frequency resources, the preconfigured time-frequency resources are a first number of continuous subframes selected in each first time length from a preconfigured starting time point.

[0225] Optionally, the apparatus further comprises:

[0226] The sending module is configured to send a fifth message to the first device before the processing module 601 listens to the first time-frequency resources to receive road safety information, the fifth message being used for requesting road safety information.

[0227] Optionally, in a case that the first time-frequency resources comprise time-frequency resources in which the terminal expects the first device to send road safety information, the fifth message comprises information of at least part of the time-frequency resources in the first time-frequency resources, or the fifth message comprises information of at least part of the time-frequency resources in the first time-frequency resources and at least one of the following information related to the terminal: terminal type, terminal location, current traffic environment, moving speed, acceleration, angular speed and moving direction.

[0228] Optionally, the apparatus further comprises:

[0229] The determining module is configured to determine that road safety information needs to be acquired in any of the following cases:

[0230] A user's enabling operation is received;

[0231] According to the electronic fence information, the map information and the location coordinates of the terminal, it is determined that the terminal is in a preset complex traffic environment;

[0232] According to the electronic fence information, the map information, the position coordinates of the terminal, and the moving direction of the terminal, it is determined that the traffic environment to be passed through by the terminal is the preset complex traffic environment.

[0233] The moving speed of the terminal is greater than a first threshold value.

[0234] The remaining power of the terminal is greater than a second threshold value.

[0235] Optionally, the road safety information further comprises first indication information, and the first indication information is used for indicating time-frequency resources for sending next road safety information.

[0236] It is to be noted that the above data transmission apparatus provided by the embodiments of the present application can realize all the method steps achieved by the above data transmission method applied to a terminal, and can achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments in the embodiments will not be described in detail.

[0237] The embodiments of the present application further provide a data transmission method applied to a first device, such as a base station. Figure 7 As shown in the figure, the method comprises a processing module 701, wherein the processing module 701 is specifically used for performing at least one of the following:

[0238] Through interaction with the terminal, a target time-frequency resource is determined, wherein the target time-frequency resource is used for carrying road safety information sent to the terminal.

[0239] In a first time-frequency resource, a time-frequency resource used for sending road safety information is determined, and the road safety information is sent, wherein the first time-frequency resource comprises a time-frequency resource in which the terminal expects the first device to send road safety information, or the first time-frequency resource is a preconfigured time-frequency resource.

[0240] Optionally, when the processing module 701 is used for determining the target time-frequency resource through interaction with the terminal, it is specifically used for:

[0241] A first message sent by the terminal is received, and the first message is used for requesting road safety information, and the first message comprises at least partial listening subframe information of the terminal in a partial sensing mode.

[0242] According to the at least partial listening subframe information of the terminal in the partial sensing mode and / or sensing information of the first device, the target time-frequency resource is determined.

[0243] Optionally, the first message further comprises at least one of the following related to the terminal: terminal type, terminal position, current traffic environment, moving speed, acceleration, angular speed, and moving direction.

[0244] The processing module 701 is specifically configured to:

[0245] In a case where a plurality of first messages are received from the terminals, the priority of each terminal is determined according to at least one of the terminal type, the terminal position, the current traffic environment, the moving speed, the acceleration, and the angular velocity;

[0246] According to the priority of the terminal, the target time-frequency resource of each terminal is determined according to at least part of the listening subframe information of the terminal in the partial sensing mode and / or the sensing information of the first device.

[0247] Optionally, the apparatus further includes a determination module and a first sending module, after the processing module 701 determines the target time-frequency resource according to at least part of the listening subframe information of the terminal in the partial sensing mode and / or the sensing information of the first device, the determination module is configured to determine the sending time-frequency resource of the second message according to at least part of the listening subframe information of the terminal in the partial sensing mode and the sensing information of the first device.

[0248] The first sending module is configured to feed back the second message to the terminal on the sending time-frequency resource of the second message, and the second message includes the target time-frequency resource; and send the road safety information on the target time-frequency resource.

[0249] Optionally, the processing module 701 is configured to determine the target time-frequency resource through interaction with the terminal, and is specifically configured to:

[0250] In a case where the first device is a base station, a third message sent by the terminal is received, and the third message is used to request to allocate a time-frequency resource for carrying road safety information, wherein the third message includes at least one of the following related to the terminal: terminal type, terminal position, current traffic environment, moving speed, acceleration, angular velocity, and moving direction;

[0251] According to at least one of the terminal type, the terminal position, the current traffic environment, the moving speed, the acceleration, the angular velocity, and the moving direction, a plurality of RSUs associated with the terminal are determined.

[0252] Each of the RSUs is allocated a time-frequency resource for sending road safety information, and the target time-frequency resource includes the time-frequency resource allocated by the first device for each of the RSUs.

[0253] Optionally, the apparatus further comprises a second sending module, after the processing module 701 is configured to determine the target time-frequency resource through interaction with the terminal, the second sending module is specifically configured to:

[0254] sending a sixth message to each of the RSUs, the sixth message comprising time-frequency resources allocated to the RSUs by the base station, the sixth message being used to instruct each of the RSUs to send road safety information on the time-frequency resources comprised in the sixth message;

[0255] feeding back a fourth message to the terminal, the fourth message comprising time-frequency resources allocated to each of the RSUs by the first device, or the fourth message comprising discontinuous reception (DRX) configuration information of the terminal; wherein the DRX configuration information is related to the time-frequency resources allocated to each of the RSUs by the first device.

[0256] Optionally, when the processing module 701 is configured to determine the time-frequency resource for sending road safety information in the first time-frequency resource, the processing module 701 is specifically configured to:

[0257] when the first time-frequency resource is a preconfigured time-frequency resource, selecting a first number of continuous subframes in each first time length from a preconfigured starting time point;

[0258] determining a first value obtained by taking the identity of the first device as a modulus of the first number as an offset value;

[0259] acquiring the time-frequency resource for sending road safety information in the first number of continuous subframes according to the offset value.

[0260] Optionally, the apparatus further comprises a receiving module, before the processing module 701 is configured to determine the time-frequency resource for sending road safety information in the first time-frequency resource and send the road safety information, the receiving module is configured to receive a fifth message sent by the terminal, the fifth message being used to request road safety information.

[0261] Optionally, when the first time-frequency resource comprises time-frequency resources in which the terminal expects the first device to send road safety information, the fifth message comprises information of at least part of the time-frequency resources in the first time-frequency resource, or the fifth message comprises information of at least part of the time-frequency resources in the first time-frequency resource and at least one of the following related to the terminal: terminal type, terminal location, current traffic environment, moving speed, acceleration, angular velocity, and moving direction;

[0262] wherein, when the processing module 701 is configured to determine the time-frequency resource for sending road safety information in the first time-frequency resource, the processing module 701 is specifically configured to:

[0263] In a case that the fifth messages are received from the plurality of terminals, and the plurality of fifth messages comprise at least one of the following: a terminal type, a terminal position, a current traffic environment, a moving speed, an acceleration, an angular speed and a moving direction of the terminal, the priority of each terminal is determined according to at least one of the terminal type, the terminal position, the current traffic environment, the moving speed, the acceleration and the angular speed;

[0264] According to the priority of the terminal, time-frequency resources for transmitting road safety information are determined for each terminal in a first time-frequency resource corresponding to each terminal.

[0265] Optionally, in a case that the time-frequency resources for transmitting the road safety information need to be changed, the road safety information further comprises first indication information, the first indication information being used for indicating time-frequency resources for transmitting next road safety information.

[0266] It should be noted that the above data transmission apparatus provided by the embodiments of the present application can realize all the method steps achieved by the above data transmission method applied to the first device, and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments will not be described in detail.

[0267] As shown in Figure 8 the embodiments of the present application provide a terminal, comprising a transceiver 810, a processor 800, a memory 820, and a program or instruction stored in the memory 820 and executable on the processor 800; the processor 800 executes the program or instruction to realize the above data transmission method.

[0268] The transceiver 810 is configured to receive and transmit data under the control of the processor 800.

[0269] In the above Figure 8 , the bus architecture can include any number of interconnected buses and bridges, which are linked together by various circuits of the processor 800 representing one or more processors and the memory 820 representing memory. The bus architecture can also link various other circuits such as peripheral devices, voltage stabilizers and power management circuits, which are well known in the art, and therefore, will not be described further herein. The bus interface provides an interface. The transceiver 810 can be a plurality of elements, i.e. including a transmitter and a receiver, which provide units for communicating with various other devices on a transmission medium. For different terminals, the user interface 830 can also be an interface that can be connected to the required device, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

[0270] The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 can store data used by the processor 1300 in performing operations.

[0271] The embodiment of the present application further provides a first device, comprising a transceiver, a memory, a processor and a computer program stored in the memory and running on the processor, and the processor implements the data transmission method applied to the first device as described above when executing the computer program, and the same technical effects can be achieved, and here the same parts and beneficial effects of the method embodiment in the embodiment will not be described in detail.

[0272] In addition, the embodiment of the present application further provides a readable storage medium, and the readable storage medium stores a program, and the program is executed by the processor to implement each process of the data transmission method embodiment as described above, and the same technical effects can be achieved, and here the same parts and beneficial effects of the method embodiment in the embodiment will not be described in detail. The readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0273] Finally, it should be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0274] The above is the preferred embodiment of the present application, and it should be noted that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A data transmission method, characterized by, The application is applied to a terminal, and comprises: In a case where road safety information needs to be acquired, at least one of the following is performed: Through interaction with a first device, a target time-frequency resource is acquired, and road safety information is received on the target time-frequency resource; A first time-frequency resource is listened to, and road safety information is received, the first time-frequency resource comprising a time-frequency resource in which the terminal expects the first device to send road safety information; wherein, through interaction with the first device, the target time-frequency resource is acquired, comprising: sending a first message to the first device, the first message being used for requesting road safety information, the first message comprising at least partial listening subframe information of the terminal in a partial sensing mode; receiving a second message fed back by the first device, the second message comprising a target time-frequency resource, wherein the target time-frequency resource is determined by sensing information of the first device and / or at least partial listening subframe information of the terminal in the partial sensing mode; or, In a case where the first device is a base station, a third message is sent to the first device, the third message being used for requesting allocation of a time-frequency resource carrying road safety information, wherein the third message comprises at least one of the following related to the terminal: terminal type, terminal position, current traffic environment, moving speed, acceleration, angular speed and moving direction; a fourth message fed back by the first device is received, the fourth message comprising: time-frequency resources allocated by the first device to a plurality of road side units (RSUs) for sending road safety information, or the fourth message comprising: discontinuous reception (DRX) configuration information of the terminal; wherein the DRX configuration information is related to time-frequency resources allocated by the first device to each of the RSUs for sending road safety information; the target time-frequency resource is determined according to the time-frequency resources allocated by the first device to the plurality of RSUs for sending road safety information or the DRX configuration information of the terminal; Before the listening to the first time-frequency resource and the receiving of the road safety information, the method further comprises: A fifth message is sent to the first device, the fifth message being used for requesting road safety information; when the first time-frequency resource comprises a time-frequency resource in which the terminal expects the first device to send road safety information, the fifth message comprises information of at least partial time-frequency resources in the first time-frequency resource, or the fifth message comprises information of at least partial time-frequency resources in the first time-frequency resource and at least one of the following related to the terminal: terminal type, terminal position, current traffic environment, moving speed, acceleration, angular speed and moving direction.

2. The method of claim 1, wherein, The first message further comprises at least one of the following related to the terminal: terminal type, terminal position, current traffic environment, moving speed, acceleration, angular speed and moving direction.

3. The method of claim 1, wherein, The method further comprises: In any of the following cases, it is determined that road safety information needs to be acquired: A user's enabling operation is received; According to electronic fence information, map information and position coordinates of the terminal, it is determined that a traffic environment in which the terminal is located is a preset complex traffic environment; determining, according to the electronic fence information, the map information, the position coordinates of the terminal, and the moving direction of the terminal, that a traffic environment to be passed through by the terminal is a preset complex traffic environment; the moving speed of the terminal is greater than a first threshold value; the remaining power of the terminal is greater than a second threshold value.

4. The method of claim 1, wherein, The road safety information further includes first indication information, and the first indication information is used to indicate time-frequency resources for sending next road safety information.

5. A data transmission method, characterized by, The method is applied to a first device, and includes at least one of the following: determining, through interaction with the terminal, a target time-frequency resource, wherein the target time-frequency resource is used to carry road safety information sent to the terminal; determining, in a first time-frequency resource, a time-frequency resource used to send the road safety information, and sending the road safety information, wherein the first time-frequency resource includes a time-frequency resource in which the terminal expects the first device to send the road safety information; wherein the determining, through interaction with the terminal, of the target time-frequency resource includes: receiving a first message sent by the terminal, the first message being used to request road safety information, and the first message including at least partial listening subframe information of the terminal in a partial perception mode; determining the target time-frequency resource according to the at least partial listening subframe information of the terminal in the partial perception mode and / or perception information of the first device; determining a sending time-frequency resource of a second message according to the at least partial listening subframe information of the terminal in the partial perception mode and the perception information of the first device; feeding back, to the terminal, the second message on the sending time-frequency resource of the second message, the second message including the target time-frequency resource; sending the road safety information on the target time-frequency resource; or, in a case where the first device is a base station, receiving a third message sent by the terminal, the third message being used to request allocation of a time-frequency resource carrying road safety information, wherein the third message includes at least one of the following related to the terminal: a terminal type, a terminal position, a currently located traffic environment, a moving speed, an acceleration, an angular speed, and a moving direction; determining a plurality of RSUs associated with the terminal according to at least one of the terminal type, the terminal position, the currently located traffic environment, the moving speed, the acceleration, the angular speed, and the moving direction; allocating, for each of the RSUs, a time-frequency resource used to send road safety information, wherein the target time-frequency resource includes the time-frequency resource allocated by the first device for each of the RSUs; feeding back, to the terminal, a fourth message, the fourth message including: the time-frequency resource allocated by the first device for each of the RSUs, or the fourth message including: discontinuous reception (DRX) configuration information of the terminal; wherein the DRX configuration information is related to the time-frequency resource allocated by the first device for each of the RSUs; wherein, before the determining, in the first time-frequency resource, of the time-frequency resource used to send the road safety information, and the sending of the road safety information, the method further includes: receive a fifth message sent by the terminal, the fifth message being used for requesting road safety information; when the first time-frequency resource comprises a time-frequency resource in which the terminal expects the first device to send road safety information, the fifth message comprises information of at least part of the time-frequency resource in the first time-frequency resource, or the fifth message comprises information of at least part of the time-frequency resource in the first time-frequency resource and at least one of the following related to the terminal: terminal type, terminal position, current traffic environment, moving speed, acceleration, angular speed and moving direction.

6. The method of claim 5, wherein, The first message further comprises at least one of the following related to the terminal: terminal type, terminal position, current traffic environment, moving speed, acceleration, angular speed and moving direction. The target time-frequency resource is determined according to at least part of the listening subframe information of the terminal in the partial perception mode and / or the perception information of the first device. In a case where a plurality of first messages sent by the terminals are received, the priority of each terminal is determined according to at least one of the terminal type, the terminal position, the current traffic environment, the moving speed, the acceleration and the angular speed. According to the priority of the terminal, the target time-frequency resource of each terminal is determined according to at least part of the listening subframe information of the terminal in the partial perception mode and / or the perception information of the first device in sequence.

7. The method of claim 5, wherein, After the target time-frequency resource is determined through the interaction with the terminal, the method further comprises: sending a sixth message to each RSU, the sixth message comprising a time-frequency resource allocated to the RSU by the base station, the sixth message being used for instructing each RSU to send road safety information on the time-frequency resource comprised in the sixth message.

8. The method of claim 5, wherein, In the first time-frequency resource, the time-frequency resource used for sending road safety information is determined, comprising: In a case where a plurality of fifth messages sent by the terminals are received, and the plurality of fifth messages comprise at least one of the following related to the terminal: terminal type, terminal position, current traffic environment, moving speed, acceleration, angular speed and moving direction, the priority of each terminal is determined according to at least one of the terminal type, the terminal position, the current traffic environment, the moving speed, the acceleration and the angular speed. According to the priority of the terminal, the time-frequency resource used for sending road safety information is determined for each terminal in the first time-frequency resource corresponding to each terminal in sequence. In a case where the time-frequency resource used for sending the road safety information needs to be changed, the road safety information further comprises first indication information, the first indication information being used for indicating a time-frequency resource used for sending next road safety information.

9. The method of claim 5, wherein, Applied to a terminal, comprising:

10. A data transmission apparatus, characterized by comprising: In a case where road safety information needs to be acquired, the processing module is configured to perform at least one of the following: acquire a target time-frequency resource through interaction with a first device, and receive road safety information on the target time-frequency resource; ​ listening to a first time-frequency resource to receive road safety information, wherein the first time-frequency resource comprises time-frequency resources in which the terminal expects the first device to transmit road safety information; wherein the target time-frequency resource is obtained through interaction with the first device, including: sending a first message to the first device, the first message being used to request road safety information, the first message comprising at least partial listening subframe information of the terminal in the partial sensing mode; receiving a second message fed back by the first device, the second message comprising the target time-frequency resource, wherein the target time-frequency resource is determined by sensing information of the first device and / or at least partial listening subframe information of the terminal in the partial sensing mode; or in the case that the first device is a base station, sending a third message to the first device, the third message being used to request allocation of time-frequency resources carrying road safety information, wherein the third message comprises at least one of the following related to the terminal: terminal type, terminal location, current traffic environment, moving speed, acceleration, angular velocity and moving direction; receiving a fourth message fed back by the first device, the fourth message comprising: time-frequency resources allocated by the first device for a plurality of road side units (RSUs) to transmit road safety information, or the fourth message comprising: discontinuous reception (DRX) configuration information of the terminal; wherein the DRX configuration information is related to time-frequency resources allocated by the first device for each of the RSUs to transmit road safety information; determining the target time-frequency resource according to the time-frequency resources allocated by the first device for the plurality of RSUs to transmit road safety information or the DRX configuration information of the terminal; the apparatus further comprises: a sending module configured to send a fifth message to the first device, the fifth message being used to request road safety information; when the first time-frequency resource comprises time-frequency resources in which the terminal expects the first device to transmit road safety information, the fifth message comprising information of at least partial time-frequency resources in the first time-frequency resource, or the fifth message comprising information of at least partial time-frequency resources in the first time-frequency resource and at least one of the following related to the terminal: terminal type, terminal location, current traffic environment, moving speed, acceleration, angular velocity and moving direction.

11. A data transmission apparatus, characterized by comprising: applicable to a first device, comprising: a processing module configured to perform determining a target time-frequency resource through interaction with a terminal, wherein the target time-frequency resource is used to carry road safety information transmitted to the terminal, determining time-frequency resources in which road safety information is transmitted in a first time-frequency resource, and transmitting the road safety information, wherein the first time-frequency resource comprises time-frequency resources in which the terminal expects the first device to transmit road safety information; The target time-frequency resource is determined through interaction with the terminal, including: receiving a first message sent by the terminal, the first message being used for requesting road safety information, the first message including at least partial listening subframe information of the terminal in a partial perception mode; determining the target time-frequency resource according to the at least partial listening subframe information of the terminal in the partial perception mode and / or perception information of the first device; determining a sending time-frequency resource of a second message according to the at least partial listening subframe information of the terminal in the partial perception mode and the perception information of the first device; feeding back the second message to the terminal on the sending time-frequency resource of the second message, the second message including the target time-frequency resource; sending road safety information on the target time-frequency resource; or, In the case where the first device is a base station, receiving a third message sent by the terminal, the third message being used for requesting allocation of a time-frequency resource carrying road safety information, wherein the third message includes at least one of the following related to the terminal: terminal type, terminal location, current traffic environment, moving speed, acceleration, angular speed and moving direction; determining a plurality of RSUs associated with the terminal according to at least one of the terminal type, the terminal location, the current traffic environment, the moving speed, the acceleration, the angular speed and the moving direction; allocating a time-frequency resource for sending road safety information to each of the RSUs, wherein the target time-frequency resource includes the time-frequency resource allocated by the first device to each of the RSUs; feeding back a fourth message to the terminal, the fourth message including: the time-frequency resource allocated by the first device to each of the RSUs, or the fourth message including: discontinuous reception (DRX) configuration information of the terminal; wherein the DRX configuration information is related to the time-frequency resource allocated by the first device to each of the RSUs; The apparatus further includes: The receiving module is configured to receive a fifth message sent by the terminal, the fifth message being used for requesting road safety information; when the first time-frequency resource includes a time-frequency resource on which the terminal expects the first device to send road safety information, the fifth message includes information of at least partial time-frequency resources in the first time-frequency resource, or the fifth message includes information of at least partial time-frequency resources in the first time-frequency resource and at least one of the following related to the terminal: terminal type, terminal location, current traffic environment, moving speed, acceleration, angular speed and moving direction.

12. A terminal comprising a transceiver, a memory, a processor, and a computer program stored on the memory and running on the processor, characterized in that, The processor, when executing the computer program, implements the data transmission method according to any one of claims 1 to 4.

13. A first device comprising a transceiver, a memory, a processor, and a computer program stored on the memory and running on the processor, wherein, The processor, when executing the computer program, implements the data transmission method according to any one of claims 5 to 9.

14. A readable storage medium, on which a program or instructions are stored, characterized in that, The program or instructions, when executed by the processor, implement the data transmission method according to any one of claims 1 to 4, or implement the data transmission method according to any one of claims 5 to 9.

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