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Method and system for acquiring high-precision time from 5G base station through air interface

A high-precision, 5G technology, applied in wireless communication, electrical components, synchronization devices, etc., can solve problems such as not being able to reach terminal equipment, achieve convenient operation, solve time synchronization problems, and eliminate delays

Active Publication Date: 2020-09-25
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

[0003] With the advancement of science and technology, the Internet of Everything, and the access of more electronic devices to the network, people's requirements for higher time accuracy are becoming stronger and stronger. With the construction of 5G, it is possible to build a high-precision time network, but high-precision The time network can only reach the base station side, but cannot reach the terminal equipment

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  • Method and system for acquiring high-precision time from 5G base station through air interface
  • Method and system for acquiring high-precision time from 5G base station through air interface
  • Method and system for acquiring high-precision time from 5G base station through air interface

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Embodiment approach

[0033] refer to Figure 4 , the method for obtaining high-precision time from a 5G base station through an air interface according to the present invention includes the following steps:

[0034] 1) Obtain basic information from the air interface of the 5G base station;

[0035] 3GPP defines SSB (Synchronization Signal Block) in 5G NR, which is mainly used for downlink synchronization. Through this synchronization signal, the basic information that can be obtained by the air interface of 5G base station includes SIB16 containing time information Ts issued by 5G base station (included in SSB In the frame structure) timing signaling, the local time of the SIB16 timing signaling start / stop time slot, the system frame number of the frame where the SIB16 timing signaling is located, and the uplink timing advance TimeAdvance for communication with the current 5G base station;

[0036] 2) Calculate the air interface delay parameter Ta through the uplink time advance TimeAdvance obtai...

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Abstract

The invention discloses a method and a system for obtaining high-precision time from a 5G base station through an air interface. The method comprises the following steps that: 1) basic information isacquired from an air interface of a 5G base station, and the basic information comprises SIB16 time service signaling which is issued by the 5G base station and contains time information and uplink time advance TimeAdvance of communication with the current 5G base station; 2) an air interface delay parameter is calculated through a plurality of groups of uplink time advances TimeAdvance obtained by continuous measurement; 3) time information contained in the SIB16 time service signaling is corrected according to the air interface delay parameter to obtain corrected high-precision time information; and 4) the corrected high-precision time information is sent to terminal equipment in the form of a customized frame, the terminal equipment acquires high-precision time through the customized frame. The method and the system can provide high-precision time service for the terminal equipment based on the 5G technology.

Description

technical field [0001] The invention belongs to the field of 5G high-precision time, and relates to a method and system for obtaining high-precision time from a 5G base station through an air interface. Background technique [0002] In the past, high-precision time synchronization was mainly realized by satellites. However, there are problems such as inconvenient installation of satellite antennas and difficult maintenance. Therefore, no ground network has been formed, and a time synchronization device is established in the station to independently obtain satellite information from the sky. [0003] With the advancement of science and technology, the Internet of Everything, and the access of more electronic devices to the network, people's requirements for higher time accuracy are becoming stronger and stronger. With the construction of 5G, it is possible to build a high-precision time network, but high-precision The time network also only reaches the base station side, bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W8/24H04W56/00
CPCH04W8/245H04W56/0015
Inventor 汪洋滕玲王智慧丁慧霞张庚孟萨出拉吴赛杨德龙李健王亚男
Owner CHINA ELECTRIC POWER RES INST
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