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Time synchronization method, device, network device and computer-readable storage medium

A technology for time synchronization and network equipment, applied in the field of communication, can solve the problems of low precision and poor stability, achieve the effect of fast synchronization convergence, improve synchronization stability and synchronization accuracy, and avoid network shocks

Active Publication Date: 2022-04-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The time synchronization method, device, network equipment, and computer-readable storage medium provided by the embodiments of the present invention mainly solve the technical problem of providing a new time synchronization scheme to solve the problem of low precision and poor stability of existing time synchronization schemes. question

Method used

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  • Time synchronization method, device, network device and computer-readable storage medium
  • Time synchronization method, device, network device and computer-readable storage medium
  • Time synchronization method, device, network device and computer-readable storage medium

Examples

Experimental program
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Embodiment 1

[0039] The full name of the IEEE 1588 Time Synchronization Protocol is the Precision Clock Synchronization Protocol Standard for Network Measurement and Control Systems (IEEE1588 Precision Clock Synchronization Protocol), referred to as PTP (Precision timing Protocol, Precision Time Protocol). It supports time synchronization between master and slave devices through packet exchange, with sub-microsecond time synchronization accuracy. The 1588 time synchronization system can be realized by pure software, for example, using the CPU to implement the 1588 protocol stack to complete the sending and receiving of PTP messages, time stamp processing and time synchronization. Realizing the 1588 time synchronization system by CPU pure software has some advantages: simple implementation, only need to maintain 1588 protocol stack, independent of the specific hardware at the bottom; fast synchronization convergence; low cost, etc. However, limited by the performance of the CPU, the sending...

Embodiment 2

[0061] This embodiment will continue to introduce the time synchronization method provided by this embodiment with some specific examples. Please refer to image 3 Flowchart showing the time synchronization method:

[0062] In this embodiment, the time synchronization protocol is the 1588 time synchronization protocol, that is, the PTP protocol, and the time synchronization chip is a 1588 function chip for example. This example is not the only implementation of the present invention. In addition, in the slave device, the system clock can be implemented by an FPGA (Field-Programmable Gate Array, Field Programmable Gate Array), and provided to each device, module, etc. in the device that needs to use the system time.

[0063] S302: The processor performs time synchronization on the system clock according to the time synchronization protocol.

[0064] The slave device control processor runs the time synchronization protocol stack according to the time synchronization protocol, ...

Embodiment 3

[0079] This embodiment provides a time synchronization device, please refer to Figure 5 , the time synchronization device 50 includes a software synchronization module 502 and a chip synchronization module 504 . Wherein the first synchronization module 502 is used to control the processor to perform time synchronization on the system clock according to the time synchronization protocol, and the synchronization detection module 504 is used to detect whether the time synchronization of the system clock has reached a stable state; After the detection result of the module 504 is yes, the time synchronization chip is switched to continue time synchronization of the system clock.

[0080] When two network devices interact, it is necessary to ensure that the system times of the two network devices are consistent. In general, the slave device synchronizes the time of its own system clock with the time of the master device. Therefore, in this embodiment, the time synchronization appa...

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Abstract

Embodiments of the present invention provide a time synchronization method, device, network equipment, and computer-readable storage medium. The processor first performs time synchronization on the system clock according to the time synchronization protocol, and after determining that the time synchronization of the system clock has reached a stable state, switches to The time synchronization chip continues to synchronize the system clock. Since the solution of the processor performing time synchronization according to the time synchronization protocol has the advantage of fast synchronization convergence speed, using this solution at the beginning of time synchronization can make the time deviation between the local device and the master device converge quickly. Since the time synchronization chip will fully suppress and filter the message data with the main device, after the time synchronization of the system clock reaches a stable state, the time synchronization chip will continue to perform time synchronization after the time synchronization chip, which can avoid network shocks, interference noise, etc. The impact of the time synchronization result, thereby improving the synchronization stability and synchronization accuracy of the system clock time synchronization.

Description

technical field [0001] The present invention relates to the communication field, in particular to a time synchronization method, device, network equipment and computer-readable storage medium. Background technique [0002] With the rise of 5G (5th Generation, fifth-generation mobile communication) network technology, and the promotion of 5G-related application requirements and clock technology standards, the IEEE (Institute of Electrical and Electronics Engineers, Institute of Electrical and Electronics Engineers) 1588 time synchronization protocol is Network clock time synchronization plays an important role. As an important backup of the GPS (Global Positioning System, Global Positioning System) time source, the 1588 clock provides a high-precision clock time synchronization function for the entire communication network, providing strong support and guarantee for the normal operation of network communication services. [0003] In the prior art, the CPU of the network devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06
CPCH04J3/0661H04J3/06
Inventor 罗俊翔
Owner ZTE CORP
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