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Frame synchronization method and device

A frame synchronization and frame out-of-synchronization technology, applied in the field of communication, can solve the problems of inability to meet high-speed application transmission requirements and time-consuming, and achieve the effects of reducing processing delay, improving processing efficiency, and saving logic resources.

Active Publication Date: 2015-09-23
RAISECOM TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

It can be seen that in the above method, the serial processing method is still used to search the frame header for the parallel code stream. It needs to search several frames to find the correct frame header, which takes a lot of time and still cannot meet the transmission requirements of high-speed applications.

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Embodiment Construction

[0049] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. 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.

[0050] The embodiments of the present invention can be applied to various communication transmission systems, such as digital communication transmission systems, optical transmission systems, etc., and the embodiments of the present invention can be applied to high-speed transmission fields such as OTN, and realize the scheme of frame synchronization of high-speed serial code streams; Preferably, the high-speed serial code stream in the ...

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Abstract

The embodiment of the invention discloses a frame synchronization method and device, and relates to the field of communication, wherein the method and device are used for improving the processing efficiency of frame synchronization. In the embodiment of the invention, the method comprises the steps: converting a received serial code stream and obtaining a parallel cod stream; employing a preset key field of a frame head corresponding to a data frame contained in the parallel code stream to match with each sub parallel code stream in the parallel code stream in a parallel manner; determining the offset of the frame head in a parallel code stream according to the position of the sub parallel code stream, which is successfully matched with the preset key field, in the parallel code stream; carrying out the pre-aligning processing of the parallel code stream according to the frame length corresponding to the data frame contained in the parallel code stream and the determined offset of the frame head; judging whether the pre-aligned frame head is a pseudo frame head or not, enabling the parallel code stream after pre-aligning to serve as a synchronized parallel code stream if the pre-aligned frame head is not the pseudo frame head, and outputting the parallel code stream, thereby solving the above problems.

Description

technical field [0001] The present invention relates to the communication field, in particular to a frame synchronization method and device. Background technique [0002] With the development of communication and computer technology, the requirement for network data transmission bandwidth is increasing, and optical transmission network has been more and more widely used. [0003] In an Optical Transport Network (OTN, Optical Transport Network), the accuracy of frame synchronization directly affects the stability of the communication system. Current frame synchronization methods mainly include serial frame synchronization and parallel frame synchronization. The serial frame synchronization method is mainly aimed at the field of low-speed transmission. This method is to search the frame header from the serial code stream, and use one or more shift registers to buffer data in multiple cycles, and compare the shift registers in each cycle. Until the frame header is detected, t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04Q11/00
Inventor 李俊郭敬东
Owner RAISECOM TECH
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