A carrier synchronization method, device and system

A technology of carrier synchronization and main carrier, which is applied in the field of communication, can solve the problem that the carrier cannot be synchronized, and achieve the effect of improving stability and reliability

Active Publication Date: 2016-03-30
HUAWEI DIGITAL POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a carrier synchronization method, device and system, which can solve the problem that the carrier cannot be synchronized when a single point of failure occurs, realize seamless switching of the carrier synchronization signal when a failure occurs, and further improve the stability and reliability of the system sex

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  • A carrier synchronization method, device and system
  • A carrier synchronization method, device and system
  • A carrier synchronization method, device and system

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Embodiment Construction

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] An embodiment of the present invention provides a carrier synchronization method, such as figure 1 As shown, the method includes:

[0044] S101. The slave device receives a main carrier synchronization signal sent from the first master according to a preset period, and adjusts its own carrier signal according to the main carrier synchronization signal, so that its own carrier signal is synchronized with the main carrier synchronization signal.

[0045]...

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Abstract

The embodiment of the invention provides a method, a device and a system for carrier synchronization, relating to the communication field. The method, the device and the system are capable of solving the problem that the carrier cannot synchronize when a single-point failure appears, realizing the seamless changeover of carrier synchronization signals in failure, and improving the stability and reliability of the system. The carrier synchronization method comprises the following steps: receiving a main carrier synchronization signal sent by a first mainframe according to a preset period, and adjusting an own carrier signal according to the main carrier synchronization signal, so that the own carrier signal is synchronized with the main carrier synchronization signal; receiving a backup carrier synchronization signal from a second mainframe, wherein a backup carrier synchronization signal is sent after the second mainframe receives the main carrier synchronization signal sent according to the preset period; the backup carrier synchronization signal is synchronized with the main carrier synchronization signal; if the main carrier synchronization signal from the first mainframe is not received within the preset period, the own carrier signal is adjusted according to the backup carrier synchronization signal, so that the adjusted own carrier signal is synchronized with the main carrier synchronization signal.

Description

technical field [0001] The present invention relates to the communication field, in particular to a carrier synchronization method, device and system. Background technique [0002] In the paralleling of inverter power modules, in order to control the impact of high-frequency circulating current on the circuit system, we often use the carrier synchronization method to control it. Among them, carrier synchronization (CarrierSynchronization) refers to the frequency and phase of the modulated signal, and the amplitude demodulation of the sinusoidal oscillation that is the same as the carrier component is added separately, that is, coherent demodulation is realized, so that the receiving end generates the same signal as the sending end. Techniques and methods for frequency in-phase signals. [0003] The prior art method to achieve carrier synchronization of parallel modules is that the master sends out a carrier synchronization signal, and other slaves capture the synchronizatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
Inventor 舒震寰徐运燕
Owner HUAWEI DIGITAL POWER TECH CO LTD
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