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Clock synchronization method, time reference source device and clock recurrence equipment

A clock synchronization and time reference technology, applied in the field of communications, can solve problems such as the inability to meet future 5G clock requirements, and achieve the effect of accurate and fast clock synchronization

Inactive Publication Date: 2018-11-23
SHENZHEN ZHONGXING SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a method for clock synchronization, time reference source equipment and clock reproduction equipment to solve the following problems in the prior art: the indoor positioning of the 5G system in the future requires ns-level precision, however, the traditional GPS timing accuracy is about 30ns , unable to meet future 5G clock demands

Method used

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  • Clock synchronization method, time reference source device and clock recurrence equipment
  • Clock synchronization method, time reference source device and clock recurrence equipment
  • Clock synchronization method, time reference source device and clock recurrence equipment

Examples

Experimental program
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Effect test

example 1

[0070] as attached Figure 5 As shown, the time reproduction terminal (network element A) and the time reference source (network element B) of the device of the present invention observe the local GPS visible satellite simultaneously, Image 6 After the GPS satellite antenna obtains the information, the GPS satellite receiver parses out the ephemeris, navigation and other information, and communicates with Image 6 The local clock generated by the local clock signal generator (high stability crystal oscillator or atomic clock) performs ultra-high precision phase discrimination, and then transmits the local time deviation information to the time reference source device (network element B) through wired, wireless communication network or satellite communication network .

[0071] at the same time Image 6 The medium time reference source device calculates the time deviation from the GPS satellite navigation system based on a high-stable time source (such as rubidium atomic clo...

example 2

[0074] as attached Figure 5 As shown, the time reappearance terminal (network element A) and the time reference source (network element B) of the device of the present invention simultaneously observe the local Beidou visual satellite, Image 6 After the Beidou satellite antenna obtains the information, it analyzes the ephemeris, navigation and other information through the Beidou satellite receiver, and communicates with Image 6 The local clock generated by the local clock signal generator (high stability crystal oscillator or atomic clock) performs ultra-high precision phase discrimination, and then transmits the local time deviation information to the time reference source device (network element B) through wired, wireless communication network or satellite communication network .

[0075] at the same time Image 6 The medium time reference source device calculates the time deviation from the Beidou satellite navigation system based on a high-stable time source in the n...

example 3

[0078] In a small area, a common-view clock broadcast tower is used to achieve ultra-high-precision clock synchronization. as attached Figure 7 As shown, the time reproduction terminal (network element A) and the time reference source (network element B) of the device of the present invention simultaneously observe the visible clock broadcasting tower at the location, Figure 7 After the broadcast antenna obtains the information, the receiver parses out the clock, navigation and other information, and communicates with Figure 7 The local clock generated by the local clock signal generator (high stability crystal oscillator or atomic clock) performs ultra-high precision phase discrimination, and then transmits the local time deviation information to the time reference source device (network element B) through wired, wireless communication network or satellite communication network .

[0079] at the same time Figure 7 The medium time reference source device calculates the ...

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Abstract

The invention discloses a clock synchronization method, a time reference source device and clock recurrence equipment. The method comprises the steps that a first network element determines time deviation correction information according to respective network element clock corrections, specific to a predetermined satellite, of the first network element and a second network element and the time deviation correction information is sent to the second network element, so as to synchronize a clock of the second network element. The method disclosed by the invention has the advantages that the firstnetwork element is taken as the time reference source device and determines the time deviation correction information according to the respective network element clock corrections, specific to the predetermined satellite, of the first network element and the second network element, thus the clock of the second network element can be corrected according to the clock correction obtained through calculation; and the clock correction is calculated by monitoring the same satellite, thus clock synchronization between the network elements is accurately and rapidly realized, and the problems in the prior art are solved.

Description

technical field [0001] The invention relates to the communication field, in particular to a clock synchronization method, a time reference source device and a clock reproduction device. Background technique [0002] With the continuous development of wireless 5G (fifth generation mobile communication technology, 5Generation) communication technology, future communication puts forward higher requirements for the synchronization performance of the clock synchronization network. At about ±200ns, the key technology CoMP-JP (Coordinated Multipoint Transmission Processing) of LTE-Advanced (Long Term Evolution Advanced) requires the relative time accuracy between adjacent base stations to be about ±500ns; the future 5G system Indoor positioning requires ns-level accuracy. However, the traditional GPS timing accuracy is around 30 ns, which cannot meet the future 5G clock requirements. Contents of the invention [0003] The present invention provides a method for clock synchroniza...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04J3/06
CPCH04J3/0638H04W56/0015H04J3/06H04W56/00
Inventor 李伯飞何力罗彬
Owner SHENZHEN ZHONGXING SOFTWARE CO LTD
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