Time synchronization method, device and system and storage medium

A time synchronization device and time synchronization technology, applied in the field of mobile communication, can solve the problems of different clock crystal oscillator performance and large error, etc.

Active Publication Date: 2020-07-10
CHINA MOBILE COMM LTD RES INST +1
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, satellite receivers are independently deployed at each site, and the performance of each satellite receiver is different. For example, the performance of each receiver in the same network and the internal clock crystal oscillator of each device is different, resulting in the delay in obtaining time through each satellite receiver. The relative error between each site is relatively large

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Time synchronization method, device and system and storage medium
  • Time synchronization method, device and system and storage medium
  • Time synchronization method, device and system and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0153] For the above-mentioned second embodiment, the tracking device can receive the first time difference from multiple master devices, and select one of the master devices to track. If the currently selected master device fails or cannot communicate, the tracking device will follow the tracking priority to re-elect a master device.

[0154] During specific implementation, the master device may be connected to the UTC to obtain the time source. If the master device is connected to the UTC to obtain the time source, the local time of the above-mentioned master device may be the local time after UTC is tracked.

[0155]During specific implementation, there may be multiple satellite times received by the tracking device and the master device. In this implementation mode, a first time difference and a second time difference can be calculated for each received satellite time , in order to distinguish the time difference corresponding to different satellites, the master device and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a time synchronization method, device, system and a storage medium, which are used for improving the precision of time synchronization and reducing relative errors among time synchronization equipment without increasing the cost of a satellite receiver. The time synchronization method implemented by the tracking device is applied to a time synchronization network, and the time synchronization network comprises a main device and the tracking device. also disclosed is the method, the method comprising: a tracking device obtaining a time synchronization adjustment value, wherein the time synchronization adjustment value is determined according to a first time difference value corresponding to the main device and a second time difference value corresponding to the tracking device; wherein the first time difference value is the time difference value between the local time of the main device and the received satellite time, and the second time difference value is thetime difference value between the local time of the tracking equipment and the received satellite time; and the tracking device adjusting the local time according to the time synchronization adjustment value.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a time synchronization method, device, system and storage medium. Background technique [0002] In the mobile communication system, in order to meet the high-precision time synchronization requirements, the base station can be solved by installing a satellite timing receiver, or the base station can obtain time information through the transmission network. If the time signal is transmitted through the transmission network, a time server needs to be deployed upstream of the transmission network. The time server usually obtains the time source through a satellite timing receiver, and the network transmission time is passed to the downstream using the PTP (Precision Time Synchronization Protocol) protocol. base station. [0003] Such as figure 1 As shown, it is a schematic diagram of the time synchronization network structure, including GNSS (Global Navigation...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityApplications(China)
IPC IPC(8): H04J3/06
CPCH04J3/0638H04J3/0682H04J3/06G04R20/02
Inventor韩柳燕
OwnerCHINA MOBILE COMM LTD RES INST