Synchronization method, device, synchronization device and system

A technology for equipment and adjacent equipment, applied in the field of communications, can solve the problems of inability to obtain time server time signals, multiple or entire network synchronization disorder, and equipment synchronization effect decline. The effect of the sync effect

Active Publication Date: 2019-10-22
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of reselecting and waiting for the lock, the device cannot obtain the time signal of the time server, which will cause the decline of the synchronization effect of the device and affect the communication quality
In more serious cases, when the time server fails, the devices on the entire network need to switch over and track the synchronization information of the standby server, so that the impact of the single point problem spreads to the entire network, resulting in disordered synchronization of multiple or entire networks

Method used

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  • Synchronization method, device, synchronization device and system
  • Synchronization method, device, synchronization device and system
  • Synchronization method, device, synchronization device and system

Examples

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example 1

[0136] like Figure 5 As shown, this example provides a synchronization system, including a plurality of devices; each of the devices includes a master unit and a plurality of slave units. A slave unit of a device can establish a connection with the master unit of an adjacent device for time signal interaction and time calibration of the slave unit, and finally time calibration and synchronization of the master unit between two adjacent devices.

[0137] like Image 6 As shown, this example also provides the device, which includes a master unit and a slave unit; the master unit includes an input subunit and an output subunit; the slave unit includes an input subunit and a comparison subunit. The input subunit of the slave unit is connected with the output subunit of the master unit of another device, acquires the time of the master unit of another device, and calibrates the time of the slave unit. The comparison subunit of the slave unit compares the time of the master unit ...

example 2

[0143] The time synchronization system provided in this example consists of multiple devices connected to each other.

[0144] Optionally, the devices constituting the time synchronization system are at the same level in the network.

[0145] Multiple devices that make up a time synchronization system consist of a master unit and one or more slave units. In the synchronization device, when comparing the time deviations of the master unit and multiple slave units, it is judged whether to extract the time of the slave unit according to the synchronization status of the slave unit. Specifically, if the slave unit cannot currently obtain the time information of its corresponding adjacent master unit or cannot normally lock the corresponding adjacent master unit, the time of the slave unit will not be extracted, and the time information of the slave unit and the master unit will not be compared. time skew.

[0146] One or more slave units are synchronized with the master units of...

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Abstract

Disclosed in the embodiments of the present disclosure are a synchronization method, a synchronization device, a synchronization apparatus and a system. The method applied in a first device comprises: synchronizing the first device with N second devices adjacent to the first device to obtain a time signal of a master time of each of the second devices, N being an integer not less than 2; locking and tracking said N time signals, to form N slave times; and calibrating, according to the N slave times, the master time of the first device. First, after the time signals of the second devices are obtained, the time signals will be locked and tracked to form slave times, thus avoiding the problem that synchronization cannot be achieved when acquiring time signals repeatedly or multiple times or the synchronization effects are poor. Second, the first device obtains the time signals of a plurality of adjacent second devices to synchronize with, rather than to be synchronized with an upstream device, thereby reducing the accumulation of synchronization errors caused by the synchronization of the downstream device and the upstream device, improving synchronization accuracy.

Description

technical field [0001] The present invention relates to a synchronization technology in the communication field, in particular to a synchronization method, device, synchronization device and system. Background technique [0002] Each device can only lock the time information of one upstream device at a time point. When there is a problem with the synchronization with the upstream device, the device needs to reselect the upstream device and switch to tracking the device after stably locking the device. In the process of reselecting and waiting for the lock, the device cannot obtain the time signal of the time server, which will cause the decline of the synchronization effect of the device and affect the communication quality. In more serious cases, when the time server fails, the devices on the entire network need to switch over the synchronization information tracked to the standby server, causing the impact of a single point problem to spread to the entire network, resultin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06
Inventor 胡新天韩柳燕
Owner CHINA MOBILE COMM LTD RES INST
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