Timing synchronization method, apparatus and device of vehicle-mounted equipment and storage medium

Abstract

This invention discloses a method, apparatus, device, and storage medium for timing synchronization of in-vehicle equipment. The method includes: when the target in-vehicle equipment has not obtained GPS timing synchronization information, receiving reference timing synchronization information sent by at least one reference roadside device; wherein none of the reference roadside devices has obtained GPS timing synchronization information; and performing timing synchronization on the target in-vehicle equipment based on the reference timing synchronization information. This invention enables accurate timing synchronization of in-vehicle equipment when roadside devices cannot obtain GPS signals, providing a guarantee for subsequent business operations.

Description

Technical Field

[0001] This invention relates to the field of vehicle network communication technology, and in particular to a timing synchronization method, apparatus, device, and storage medium for vehicle-mounted equipment. Background Technology

[0002] With the continuous development of information technology, vehicle-to-everything (V2X) technology has been widely applied. How to synchronize onboard equipment with various roadside devices in a timely manner is a key issue of concern in the industry.

[0003] Currently, roadside equipment mainly uses Global Positioning System (GPS) signals to synchronize with onboard equipment on a timed basis. However, when roadside equipment is deployed in areas such as tunnels or mountainous regions where GPS signals cannot be obtained, it will be unable to perform its own timed synchronization or synchronize with onboard equipment on a timed basis. Summary of the Invention

[0004] This invention provides a method, apparatus, device, and storage medium for timed synchronization of vehicle-mounted equipment, enabling accurate timed synchronization of vehicle-mounted equipment when roadside equipment cannot obtain GPS signals, thus ensuring the smooth operation of subsequent services.

[0005] In a first aspect, embodiments of the present invention provide a timing synchronization method for an in-vehicle device, the method comprising:

[0006] When the target vehicle-mounted device fails to obtain GPS timing synchronization information, it receives reference timing synchronization information sent by at least one reference roadside device; wherein none of the reference roadside devices has obtained GPS timing synchronization information.

[0007] The target vehicle-mounted device is synchronized according to the reference timing synchronization information.

[0008] In an optional implementation of this embodiment, before receiving reference timing synchronization information sent by at least one reference roadside device, the method further includes:

[0009] The reference roadside equipment is synchronized at regular intervals.

[0010] In an optional implementation of this embodiment, the step of periodically synchronizing each of the reference roadside devices includes:

[0011] Each of the reference roadside devices sequentially acquires standard time synchronization information sent periodically by the target roadside device; wherein, the target roadside device has already acquired the standard time synchronization information, and the standard time synchronization information is GPS time synchronization information;

[0012] Each of the reference roadside devices updates its corresponding reference timing synchronization information based on the acquired standard timing synchronization information in order to perform timing synchronization on each of the reference roadside devices.

[0013] In an optional implementation of this embodiment, the standard timing synchronization information carries the physical subframe number of the current frame and the identifier of the target roadside device.

[0014] In an optional implementation of this embodiment, the step of performing timed synchronization of the target vehicle-mounted device according to each of the reference timing synchronization information includes:

[0015] When the identifier of the target reference roadside device received by the target vehicle-mounted device through the preset channel matches the preset reference device identifier, timing and frequency adjustments are made based on the received timing and frequency deviations to synchronize the target vehicle-mounted device.

[0016] In an optional implementation of this embodiment, the preset channel is a PSCCH and / or a PSSCH channel.

[0017] In an optional implementation of this embodiment, the PSCCH and / or PSSCH channel contains at least two cells;

[0018] Each of the information cells carries the physical subframe number of the current frame and the identifier of the target roadside device.

[0019] Secondly, embodiments of the present invention also provide a timing synchronization device for an in-vehicle device, the device comprising:

[0020] The reference timing synchronization information receiving module is used to receive reference timing synchronization information sent by at least one reference roadside device when the target vehicle-mounted device has not obtained GPS timing synchronization information; wherein, none of the reference roadside devices have obtained GPS timing synchronization information.

[0021] The timing synchronization module is used to perform timing synchronization on the target vehicle-mounted equipment according to the reference timing synchronization information.

[0022] Thirdly, embodiments of the present invention also provide a timing synchronization device for an in-vehicle device, the timing synchronization device for the in-vehicle device comprising:

[0023] One or more processors;

[0024] Storage device for storing one or more programs.

[0025] When the one or more programs are executed by the one or more processors, the one or more processors implement the timed synchronization method for vehicle-mounted devices as described in any embodiment of the present invention.

[0026] Fourthly, embodiments of the present invention also provide a storage medium containing computer-executable instructions, characterized in that the computer-executable instructions, when executed by a computer processor, are used to perform a timing synchronization method for an in-vehicle device as described in any embodiment of the present invention.

[0027] The solution of this invention involves receiving reference timing synchronization information sent by at least one reference roadside device when the target vehicle-mounted device fails to obtain GPS timing synchronization information; wherein, none of the reference roadside devices have obtained GPS timing synchronization information; and timing synchronization of the target vehicle-mounted device is performed according to the reference timing synchronization information, which can achieve accurate timing synchronization of the vehicle-mounted device when the roadside device cannot obtain GPS signal, thus providing a guarantee for the subsequent operation of services. Attached Figure Description

[0028] Figure 1 This is a flowchart of a timing synchronization method for an in-vehicle device according to Embodiment 1 of the present invention;

[0029] Figure 2 This is a flowchart of a timing synchronization method for an in-vehicle device according to Embodiment 2 of the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of a timing synchronization device for a vehicle-mounted device according to Embodiment 2 of the present invention;

[0031] Figure 4 This is a schematic diagram of the timing synchronization device of a vehicle-mounted device in Embodiment 3 of the present invention. Detailed Implementation

[0032] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the embodiments of the present invention, and not all structures.

[0033] Example 1

[0034] Figure 1This is a flowchart of a timed synchronization method for vehicle-mounted devices according to Embodiment 1 of the present invention. This embodiment is applicable to situations where roadside equipment cannot obtain GPS signals, and accurate timed synchronization of vehicle-mounted devices is required. This method can be executed by a timed synchronization device for the vehicle-mounted device. This device can be implemented through software and / or hardware and integrated into the timed synchronization equipment of the vehicle-mounted device. In this embodiment, the timed synchronization device for the vehicle-mounted device can be a computer, server, or tablet computer, etc. For details, refer to... Figure 1 The method specifically includes the following steps:

[0035] Step 110: When the target vehicle-mounted device does not obtain GPS timing synchronization information, it receives reference timing synchronization information sent by at least one reference roadside device.

[0036] None of the aforementioned reference roadside devices acquired GPS timing synchronization information.

[0037] In this embodiment, the target vehicle-mounted device can be a vehicle-mounted terminal installed in any target vehicle. The target vehicle can be a vehicle driving on the road, or a vehicle parked in a parking lot or on the road, etc. This embodiment does not limit it.

[0038] In an optional implementation of this embodiment, when the target vehicle-mounted device fails to obtain GPS timing synchronization information, that is, when each roadside device deployed on the road is unable to obtain GPS timing synchronization information and cannot send GPS timing synchronization information to the target vehicle-mounted device, the target vehicle-mounted device can receive reference timing synchronization information sent by each reference roadside device.

[0039] In a specific example of this embodiment, when the target vehicle-mounted device enters the tunnel, since GPS timing synchronization information cannot be obtained in the tunnel, that is, the roadside devices in the tunnel cannot send GPS timing synchronization information to the target vehicle-mounted device, each roadside device can send reference timing synchronization information to the target device; in this embodiment, each roadside device deployed in the tunnel that cannot obtain GPS timing synchronization information is the reference roadside device involved in this embodiment.

[0040] In an optional implementation of this embodiment, before receiving the reference timing synchronization information sent by each reference roadside device, the target vehicle-mounted device may further perform timing synchronization on each reference roadside device. Accordingly, timing synchronization on each reference roadside device may include: each reference roadside device sequentially acquiring standard timing synchronization information sent periodically by the target roadside device; wherein the target roadside device has already acquired the standard timing synchronization information, and the standard timing synchronization information is GPS timing synchronization information; each reference roadside device updates its corresponding reference timing synchronization information based on the acquired standard timing synchronization information, thereby performing timing synchronization on each reference roadside device.

[0041] It is understood that in this embodiment, the standard timing synchronization information carries the physical subframe number of the current frame and the identifier of the target roadside device.

[0042] Step 120: Perform timed synchronization on the target vehicle-mounted device according to the reference timing synchronization information.

[0043] In one optional implementation of this embodiment, after the target vehicle-mounted device receives reference timing synchronization information sent by at least one reference roadside device, it can further perform timing synchronization on the target vehicle-mounted device according to the received reference timing synchronization information, thereby providing a guarantee for subsequent business processes.

[0044] In an optional implementation of this embodiment, timing synchronization of the target vehicle-mounted device based on the reference timing synchronization information may include: when the identifier of the target reference roadside device received by the target vehicle-mounted device through a preset channel matches the preset reference device identifier, timing adjustment and frequency adjustment are performed based on the received timing deviation and frequency deviation to time-synchronize the target vehicle-mounted device.

[0045] The preset channel can be a PSCCH and / or PSSCH channel, or other channels; this embodiment does not limit its use. It should be noted that the PSCCH and / or PSSCH channel involved in this embodiment contains at least two cells; each cell carries the physical subframe number of the current frame and the identifier of the target roadside device.

[0046] For example, the SCI1 carried by the PSCCH channel may include the information element Special frame ind and Sl-SubFrame; wherein, the number of bits of the information element Special frame ind is 1, which specifically means that 1 indicates that the subsequent PSSCH is a special frame, and 0 indicates that it is not a special frame; the number of bits of the information element Sl-SubFrame is 4, which specifically means that the value range is integer [0,9], which is the result of the s-link subframe number modulo 10.

[0047] For example, the information cells included in SCI1 carried by the PSCCH channel can be shown in the following table:

[0048] cell Number of bits meaning Priority 3 PPPP priority Resource reservation 4 Resource reservation information RIV variable Transmission frequency domain resource information: including LsubCH and the starting subchannel position of the other transmission. Time GAP 4 Gap between first pass and repass MCS 5 MCS value Retransmission index 1 Retransmission instructions Transmission format 1 The last symbol indicates whether to use rate matching or punch indication information. Special frame ind 1 1 indicates that the subsequent PSSCH is a special frame, and 0 indicates that it is not a special frame. Sl-SubFrame 4 The value range is integer[0,9], which is the result of S-Link subframe number modulo 10.

[0049] It should be noted that the data carried in the PSSCH channel also contains two information cells: the physical subframe number of the current frame (range [0, 10239]) and a special RSU ID identifier.

[0050] In this embodiment, when the target vehicle-mounted device fails to obtain GPS timing synchronization information, it receives reference timing synchronization information sent by at least one reference roadside device. Each of the reference roadside devices fails to obtain GPS timing synchronization information. By performing timing synchronization on the target vehicle-mounted device based on the reference timing synchronization information, accurate timing synchronization of the vehicle-mounted device can be achieved when the roadside device cannot obtain a GPS signal, thus ensuring the smooth operation of subsequent services.

[0051] To enable those skilled in the art to better understand the timing synchronization method of the vehicle-mounted equipment involved in this embodiment, a specific example is provided below, and the specific process includes:

[0052] 1. Cell design at the transmitting end

[0053] In this embodiment, the transmitting end is the target roadside device that has acquired standard timing synchronization information. Correspondingly, roadside units that have been GPS-synchronized or synchronized with the target device periodically transmit special LTE-V2X data signals to facilitate synchronization and tracking by other unsynchronized roadside units or mobile units. Since the generation of the DMRS signal sequence and the descrambling of data in the PSSCH channel require the use of subframe numbers, the following two members are added to the SCI1 carried by the PSSCH channel: Special frame ind and Sl-SubFrame.

[0054] 2. Receiver processing

[0055] In this embodiment, the receiving end is each reference roadside device that has not obtained GPS timing synchronization information. It can be understood that since each reference roadside device has not obtained GPS timing synchronization information, it is necessary to perform timing synchronization based on the target roadside device; for example, frame timing synchronization and frame number synchronization can be performed.

[0056] In one optional implementation of this embodiment, the PSCCH / PSSCH channel subframe may contain four DMRS symbols and multiple data symbols. The first data symbol (number 0) serves as a preamble, while the last symbol is not transmitted and serves as a guard interval. Since the four DMRS symbols of the PSCCH use the same sequence, it is only necessary to know the pre-configured information such as the channel bandwidth, the starting RB of the subchannel, the subchannel size, and the number of subchannels. Frame timing synchronization and frequency synchronization can be obtained by extracting frequency domain data and performing autocorrelation and cross-correlation.

[0057] For frame number synchronization of each reference roadside device, the PSCCH of the current subframe can be separated to complete the demodulation and decoding of the PSCCH channel. Extract the sl-subframe from SCI1.

[0058] The information is used for demodulation and decoding of the PSSCH channel. Then, the directSubFrameNumber information element is extracted from the PSSCH channel decoding result as the physical subframe number to complete frame number synchronization, and rsu_id is extracted as the device's sync rsu-id.

[0059] 3. Track the target vehicle-mounted equipment.

[0060] In this embodiment, after the reference devices are synchronized at regular intervals, the target vehicle-mounted device can be further tracked based on these reference roadside devices, that is, the target vehicle-mounted device is synchronized at regular intervals.

[0061] In an optional implementation of this embodiment, for each reference roadside device that has been timed and synchronized, if data sent by other devices may be received in each received subframe, and if the Special frame ind indicator in SCI1 carried by the PSCCH channel is 1, and if the device is a roadside device, the information cell rsu_id carried by the PSCCH channel matches the device's pre-configured track rsu-id; if the device is a target vehicle-mounted device, the information cell rsu_id carried by the PSCCH channel matches the device's sync rsu-id, then the target vehicle-mounted device performs timing adjustment and frequency offset adjustment according to the timing deviation and frequency deviation detected in this data reception.

[0062] Figure 2This is a flowchart of a timing synchronization method for an on-board device according to Embodiment 1 of the present invention. In this example, a tunnel scenario is used as an example for description, which mainly includes the following steps:

[0063] 1) Tunnel entrance RSU (target roadside equipment, such as Figure 2 The RSU0 in the tunnel is based on GPS synchronization information and serves as the reference roadside unit (RSU) for each roadside device within the tunnel, such as... Figure 2 RSU1, RSU2, RSU3, and RSU4 in the tunnel and the OBU (target vehicle-mounted equipment, such as...) entering the tunnel. Figure 2 The OBU1 in the system provides a timing reference, which is pre-configured as (0.0).

[0064] 2) RSU deployment inside the tunnel: Based on different pre-configured instructions, the RSUs are sequentially cascaded to the tunnel entrance to achieve timed synchronization between the RSUs, thereby enabling air interface transmission;

[0065] 3) The OBU inside the tunnel searches and synchronizes with the RSU signal inside the tunnel, realizing timed synchronization between the OBU and the RSU.

[0066] The solution in this embodiment solves the problem of lost synchronization and inability to perform services when GPS is unavailable. It enables accurate and timely synchronization of vehicle-mounted equipment when roadside equipment cannot obtain GPS signals, thus ensuring the smooth operation of subsequent services.

[0067] Example 2

[0068] Figure 3 This is a schematic diagram of a timing synchronization device for an in-vehicle device according to Embodiment 2 of the present invention. This device can execute the timing synchronization methods for in-vehicle devices involved in the above embodiments. (Refer to...) Figure 3 The device includes a reference timing synchronization information receiving module 310 and a timing synchronization module 320.

[0069] The reference timing synchronization information receiving module 310 is used to receive reference timing synchronization information sent by at least one reference roadside device when the target vehicle-mounted device has not obtained GPS timing synchronization information; wherein, none of the reference roadside devices have obtained GPS timing synchronization information.

[0070] The timing synchronization module 320 is used to perform timing synchronization on the target vehicle-mounted device according to the reference timing synchronization information.

[0071] In this embodiment, when the target vehicle-mounted device fails to obtain GPS timing synchronization information, the reference timing synchronization information receiving module receives reference timing synchronization information sent by at least one reference roadside device. Each of the reference roadside devices fails to obtain GPS timing synchronization information. By using the timing synchronization module to perform timing synchronization on the target vehicle-mounted device based on the reference timing synchronization information, accurate timing synchronization of the vehicle-mounted device can be achieved when the roadside devices cannot obtain GPS signals, thus ensuring the smooth operation of subsequent services.

[0072] In an optional implementation of this embodiment, the timing synchronization device for the vehicle-mounted equipment further includes: a reference roadside equipment timing synchronization module, used to perform timing synchronization on each of the reference roadside equipment.

[0073] In an optional implementation of this embodiment, the reference roadside device timing synchronization module is specifically used for each reference roadside device to sequentially acquire standard timing synchronization information sent periodically by the target roadside device; wherein, the target roadside device has already acquired the standard timing synchronization information, and the standard timing synchronization information is GPS timing synchronization information;

[0074] Each of the reference roadside devices updates its corresponding reference timing synchronization information based on the acquired standard timing synchronization information in order to perform timing synchronization on each of the reference roadside devices.

[0075] In an optional implementation of this embodiment, the standard timing synchronization information carries the physical subframe number of the current frame and the identifier of the target roadside device.

[0076] In an optional implementation of this embodiment, the timing synchronization module 320 is specifically used to perform timing adjustment and frequency adjustment based on the received timing deviation and frequency deviation when the identifier of the target reference roadside device received by the target vehicle-mounted device through the preset channel matches the preset reference device identifier, so as to perform timing synchronization of the target vehicle-mounted device.

[0077] In an optional implementation of this embodiment, the preset channel is a PSCCH and / or a PSSCH channel.

[0078] In an optional implementation of this embodiment, the PSCCH and / or PSSCH channel contains at least two cells;

[0079] Each of the information cells carries the physical subframe number of the current frame and the identifier of the target roadside device.

[0080] The timing synchronization device for vehicle-mounted equipment provided in this embodiment of the invention can execute the timing synchronization method for vehicle-mounted equipment provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0081] Example 3

[0082] Figure 4 This is a schematic diagram of the structure of a timing synchronization device for a vehicle-mounted device provided in Embodiment 3 of the present invention, as shown below. Figure 4 As shown, the timing synchronization device of the vehicle-mounted equipment includes a processor 40, a memory 41, an input device 42, and an output device 43; the number of processors 40 in the timing synchronization device of the vehicle-mounted equipment can be one or more. Figure 4 Taking a processor 40 as an example; the processor 40, memory 41, input device 42, and output device 43 in the timing synchronization device of the vehicle-mounted equipment can be connected via a bus or other means. Figure 4 Taking the example of a connection between China and Israel via a bus.

[0083] The memory 41, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the timing synchronization method of the vehicle-mounted device in this embodiment of the invention (e.g., the reference timing synchronization information receiving module 310 and the timing synchronization module 320 in the timing synchronization device of the vehicle-mounted device). The processor 40 executes various functional applications and data processing of the timing synchronization device of the vehicle-mounted device by running the software programs, instructions, and modules stored in the memory 41, thereby realizing the aforementioned timing synchronization method of the vehicle-mounted device.

[0084] The memory 41 may primarily include a program storage area and a data storage area. The program storage area may store the operating system and at least one application program required for a given function; the data storage area may store data created based on terminal usage. Furthermore, the memory 41 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory, or other non-volatile solid-state storage device. In some instances, the memory 41 may further include memory remotely located relative to the processor 40, which can be connected via a network to a timing synchronization device of the in-vehicle equipment. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0085] Input device 42 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the on-board equipment's timing synchronization device. Output device 43 may include display devices such as a display screen.

[0086] Example 4

[0087] Embodiment 4 of the present invention also provides a storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to perform a timing synchronization method for an in-vehicle device, the method comprising:

[0088] When the target vehicle-mounted device fails to obtain GPS timing synchronization information, it receives reference timing synchronization information sent by at least one reference roadside device; wherein none of the reference roadside devices has obtained GPS timing synchronization information.

[0089] The target vehicle-mounted device is synchronized according to the reference timing synchronization information.

[0090] Of course, the computer-executable instructions provided in the embodiments of the present invention are not limited to the method operations described above, but can also perform related operations in the timing synchronization method of the vehicle-mounted device provided in any embodiment of the present invention.

[0091] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0092] It is worth noting that in the embodiments of the timing synchronization device of the above-mentioned vehicle-mounted equipment, the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific names of each functional unit are only for easy differentiation and are not used to limit the scope of protection of the present invention.

[0093] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A method for timed synchronization of an on-board device, characterized in that, include: When the target vehicle-mounted device fails to obtain GPS timing synchronization information, it receives reference timing synchronization information sent by at least one reference roadside device; wherein none of the reference roadside devices has obtained GPS timing synchronization information. The target vehicle-mounted device is synchronized according to the reference timing synchronization information. The method further includes: When the target vehicle device detects that the Special frame ind field in SCI1 carried by the PSCCH channel is 1, and the rsu_id carried by the PSSCH channel matches the sync rsu-id pre-configured by the device, it will adjust the timing and frequency offset of the local synchronization state based on the timing and frequency offset detected during this data reception process, thereby realizing the dynamic maintenance of synchronization accuracy. Before receiving reference timing synchronization information from at least one reference roadside device, the process also includes: The reference roadside equipment is synchronized at regular intervals. The timed synchronization of each of the reference roadside devices includes: Each of the reference roadside devices sequentially acquires standard time synchronization information sent periodically by the target roadside device; wherein, the target roadside device has already acquired the standard time synchronization information, and the standard time synchronization information is GPS time synchronization information; Each of the reference roadside devices updates its corresponding reference timing synchronization information based on the acquired standard timing synchronization information in order to perform timing synchronization on each of the reference roadside devices.

2. The method according to claim 1, characterized in that, The standard timing synchronization information carries the physical subframe number of the current frame and the identifier of the target roadside device.

3. The method according to claim 2, characterized in that, The step of synchronizing the target vehicle-mounted device according to the reference timing synchronization information includes: When the identifier of the target reference roadside device received by the target vehicle-mounted device through the preset channel matches the preset reference device identifier, timing and frequency adjustments are made based on the received timing and frequency deviations to synchronize the target vehicle-mounted device.

4. The method according to claim 3, characterized in that, The preset channel is the PSCCH and / or PSSCH channel.

5. The method according to claim 4, characterized in that, The PSCCH and / or PSSCH channels contain at least two cells; Each of the information cells carries the physical subframe number of the current frame and the identifier of the target roadside device.

6. A timing synchronization device for vehicle-mounted equipment, characterized in that, include: The reference timing synchronization information receiving module is used to receive reference timing synchronization information sent by at least one reference roadside device when the target vehicle-mounted device has not obtained GPS timing synchronization information; wherein, none of the reference roadside devices have obtained GPS timing synchronization information. A timing synchronization module is used to perform timing synchronization on the target vehicle-mounted device according to the reference timing synchronization information. The device further includes: a synchronization state adjustment module, used for... When the target vehicle device detects that the Special frame ind field in SCI1 carried by the PSCCH channel is 1, and the rsu_id carried by the PSSCH channel matches the sync rsu-id pre-configured by the device, it will adjust the timing and frequency offset of the local synchronization state based on the timing and frequency offset detected during this data reception process, thereby realizing the dynamic maintenance of synchronization accuracy. The on-board equipment timing synchronization device further includes: a reference roadside equipment timing synchronization module, used to perform timing synchronization on each of the reference roadside equipment; The reference roadside device timing synchronization module is specifically used for each of the reference roadside devices to sequentially obtain standard timing synchronization information sent periodically by the target roadside device; wherein, the target roadside device has already obtained the standard timing synchronization information, and the standard timing synchronization information is GPS timing synchronization information; Each of the reference roadside devices updates its corresponding reference timing synchronization information based on the acquired standard timing synchronization information in order to perform timing synchronization on each of the reference roadside devices.

7. A timing synchronization device for vehicle-mounted equipment, characterized in that, The timing synchronization device of the vehicle-mounted equipment includes: One or more processors; Storage device for storing one or more programs. When the one or more programs are executed by the one or more processors, the one or more processors implement the timing synchronization method for the vehicle-mounted device as described in any one of claims 1-5.

8. A storage medium containing computer-executable instructions, characterized in that, The computer-executable instructions, when executed by a computer processor, are used to perform the timing synchronization method for the vehicle-mounted device as described in any one of claims 1-5.

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