Relative time synchronization method, device and system

A time synchronization and relative time technology, applied in the field of radio navigation, can solve problems such as inconvenient installation, and achieve the effects of reducing networking costs, reducing construction difficulties, and simplifying data transmission processes

Pending Publication Date: 2020-05-05
CHANGSHA TECH RES INST OF BEIDOU IND SAFETY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a relative time synchronization method, equipment and system to solve the problem of time synchronization between the communication system base station and the navigation base station, so as to reduce the problems of inconvenient installation and no GNSS signal in the existing solutions

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  • Relative time synchronization method, device and system
  • Relative time synchronization method, device and system
  • Relative time synchronization method, device and system

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Embodiment Construction

[0029] Embodiments of the present invention provide a relative time synchronization method, device and system.

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are Some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] figure 1 It is an information interaction flow chart of an embodiment of a rel...

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Abstract

The invention relates to the field of radio navigation and communication, and discloses a relative time synchronization method, device and system. The relative time synchronization method comprises that a time synchronization node A and a time synchronization node B transmit time synchronization signals to each other and receive the time synchronization signals from each other, the signal sendingtime and receiving time is acquired, the relative time difference offset of the two signals is calculated, the time synchronization signals are transmitted in a designated carrier channel through a wired transmission medium in a wireless mode, and the functions of time measurement and information transmission are realized at the same time; and further the clock of A or B is adjusted according to the acquired relative clock offset. According to the embodiment of the invention, time synchronization among all equipment needing to be synchronized in the whole network can be quickly realized, and the networking and implementation difficulty can be greatly reduced through the existing transmission medium or wireless transmission.

Description

technical field [0001] The invention relates to the field of radio navigation, in particular to a relative time synchronization method, device and system. Background technique [0002] Communication systems, navigation systems, especially indoor navigation systems have very prominent requirements for time synchronization. The time synchronization scheme applied in the existing system is the GNSS time synchronization scheme. Each communication base station or navigation base station is equipped with a GNSS device to provide GNSS time for each base station, thereby realizing time synchronization among multiple base stations. However, it becomes unrealistic for indoor communication base stations and indoor navigation base stations. Since GNSS signals cannot cover indoors, a large number of cables need to be laid for each base station to configure GNSS equipment, which brings great inconvenience to construction, and The cost is high; in addition, not all navigation systems and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04W56/00
CPCH04J3/0638H04J3/0667H04W56/001
Inventor 刘志俭钟小鹏明德祥
Owner CHANGSHA TECH RES INST OF BEIDOU IND SAFETY CO LTD
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