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Timing adjustment method and device, Internet of Vehicles equipment and storage medium

A technology for timing adjustment and Internet of Vehicles, applied in the field of communication, can solve the problems affecting the communication performance of device 2 and the frequency deviation of device 2, etc., to avoid transmission delay, improve communication performance, and save time-frequency resources.

Active Publication Date: 2021-06-29
MORNINGCORE HLDG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the Internet of Vehicles system, in addition to fixed Internet of Vehicles devices, there are also a large number of mobile Internet of Vehicles devices. If In Figure 1b, device 1 or device 2 is moving, then device 2 performs frequency monitoring according to the received synchronization signal Doppler is included in the offset adjustment result, which is likely to cause a frequency deviation in device 2, thereby affecting the communication performance of device 2

Method used

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  • Timing adjustment method and device, Internet of Vehicles equipment and storage medium
  • Timing adjustment method and device, Internet of Vehicles equipment and storage medium
  • Timing adjustment method and device, Internet of Vehicles equipment and storage medium

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Embodiment 1

[0032] Figure 1c It is a flowchart of a timing adjustment method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation where the timing adjustment of the machine is performed when the Internet of Vehicles equipment cannot receive GNSS signals. This method can be implemented by a timing adjustment device. Execution, the device can be implemented by software and / or hardware, and generally can be integrated in the Internet of Vehicles device, specifically including the following steps:

[0033] Step 110, when it is detected that the GNSS signal of the global navigation satellite system is lost, obtain the latest received historical GNSS signal, and calculate the synchronization reference time according to the historical GNSS signal.

[0034] In this embodiment, the IoV device may be a wireless communication device supporting V2X technology, where the IoV device may support cellular mobile communication technology, such as the 4th gener...

Embodiment 2

[0054] This embodiment is a further refinement of the first embodiment above, and explanations of terms that are the same as or corresponding to those in the above embodiment will not be repeated in this embodiment. Figure 2a It is a flowchart of a timing adjustment method provided by Embodiment 2 of the present invention. In this embodiment, the technical solution of this embodiment can be combined with one or more methods in the solutions of the above embodiments. In this embodiment For example, such as Figure 2a As shown, the method provided in the embodiment of the present invention may also include:

[0055] Step 210, when the loss of the GNSS signal is detected, the latest received historical GNSS signal is obtained, and the synchronization reference time is calculated according to the historical GNSS signal.

[0056] In one implementation of the embodiments of the present invention, calculating the synchronization reference time according to the historical GNSS signa...

Embodiment 3

[0072] image 3 A structural diagram of a timing adjustment device provided by Embodiment 3 of the present invention, the device includes: a synchronization reference time calculation module 310 , a delay deviation calculation module 320 , a timing adjustment module 330 and a return execution module 340 .

[0073] Wherein, the synchronization reference time calculation module 310 is used to obtain the last received historical GNSS signal when detecting the loss of the global navigation satellite system signal GNSS, and calculate the synchronization reference time according to the historical GNSS signal;

[0074] The delay deviation calculation module 320 is used to receive the service data frame in the Internet of Vehicles according to the current synchronization reference time, and calculate the delay deviation of each user data included in the service data frame;

[0075] The timing adjustment module 330 is configured to update the synchronization reference time according to...

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Abstract

The invention discloses a timing adjustment method and device, Internet of Vehicles equipment and a storage medium. The method comprises the steps: obtaining a historical GNSS signal received last time when the loss of a GNSS signal is detected, and calculating a synchronization reference time according to the historical GNSS signal; according to the current synchronization reference time, receiving a service data frame in the Internet of Vehicles, and calculating a time delay deviation of each piece of user data included in the service data frame; updating the synchronization reference time according to each time delay deviation, and performing timing adjustment on a local machine by using the updated synchronization reference time; and returning to execute the operation of receiving the service data frame in the Internet of Vehicles according to the current synchronization reference time until the GNSS signal is received again. According to the technical scheme of the embodiment of the invention, time-frequency resources in the Internet of Vehicles equipment can be saved, the problem of transmission delay or transmission distance shortening caused by synchronization of the Internet of Vehicles equipment is avoided, and the communication performance of the Internet of Vehicles equipment can be improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a timing adjustment method and device, a vehicle networking device, and a storage medium. Background technique [0002] In recent years, with the in-depth research of unmanned driving technology, a vehicle networking technology (Vehicle to X, V2X) based on information interaction between vehicles, vehicles and people, and vehicles and roads has been developed. In V2X, the information of the Internet of Vehicles is sent in the form of broadcast, and the devices of the Internet of Vehicles are independent. In order to ensure the synchronization of sending and receiving between devices, a variety of synchronization source schemes are defined in the specification, including global navigation satellites. System (Global Navigation Satellite System, GNSS) synchronization source, base station synchronization source, reference device synchronization sou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04W56/00H04W4/40
CPCH04J3/0644H04J3/0682H04W56/001H04W56/005H04W56/0065H04W4/40
Inventor 弋朝伟
Owner MORNINGCORE HLDG CO LTD
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