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Synchronous frame capture method and device

A synchronization frame and synchronization bit technology, applied in the field of communication, can solve the problems of long synchronization time, complicated implementation process, and incompatibility with the actual needs of high-speed digital communication, and achieve the effect of simplifying the process, overcoming the complexity of the implementation process and shortening the time.

Active Publication Date: 2017-06-16
深圳新视光电科技有限公司
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Problems solved by technology

[0004] The existing multi-frame synchronization methods are mostly used in low-speed communication systems, but in high-speed broadband systems, the existing multi-frame synchronization methods need to be completed in two steps: single-frame synchronization and multi-frame synchronization. The implementation process is complicated and the synchronization time is long. Not suitable for the actual needs of high-speed digital communication

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  • Synchronous frame capture method and device

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Embodiment Construction

[0026] The present invention will be described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.

[0027] The embodiment of the present invention provides a synchronous frame capture method, such as figure 1 As shown, the main processing flow includes:

[0028] Step S11: Starting from the first codeword, divide a predetermined number of codewords into multiple hypothetical single frames with a predetermined single-frame codeword length according to the order in which the codewords are received, wherein the number of multiple hypothetical single frames obtained by dividing It is greater than the number of single frames that make up the multiframe, in which one of the specified bits in the above single frame is a synchronization bit, and the remaining bits are service bits;

[0029] Step S12: sequentially extract the i-th codeword from multiple hypothetical single frames, where 0≤i≤the length of the single frame ...

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Abstract

The invention relates to the technical field of communication, in particular to a synchronous frame capturing method and a synchronous frame capturing device. The synchronous frame capturing method includes: starting from the first codon, separating a preset amount of codons into a plurality of assumed single frames by a preset single-frame codon length; sequentially extracting the codons at the ith bit from the assumed single frames, wherein the i is not smaller than zero and not larger than the value obtained by subtracting one from the single-frame codon length; ranking the extracted codons according to a sequential extraction order so as to obtain assumed synchronous frames; comparing the assumed synchronous frames with a target sequence in a step-by-step dislocation manner; if one section of continuous codon fields in the assumed synchronous frames is identical to the target sequence, determining the current ith bit as a synchronization bit for the single frames, determining the continuous codon fields as codons of a synchronous sequence of the synchronous frames, and determining the first one of the single frames and the starting frame of multiframes according to the first one in the continuous codon fields. The synchronous frame capturing method and the synchronous frame capturing device have the advantages that synchronization of the multiframes is finished in one step, a process for synchronization of the multiframes is simplified, and the time for synchronization of the multiframes is shortened.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular, to a method and device for capturing a synchronization frame. Background technique [0002] A multiframe is a data structure composed of multiple single frames. In the process of digital communication, the sending end dynamically sends data frames, which contain synchronization information. The receiving end realizes multi-frame synchronization by capturing the synchronization information in the received data frame. [0003] Specifically, most of the existing multiframe structures are composited on the basis of a single frame structure. The multiframe structure includes an obvious centralized synchronization type single frame structure. The synchronization information occupies more system bandwidth and the transmission efficiency is not high enough. Since the single frame included in the existing multi-frame adopts the centralized synchronization method, the single ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L7/00
Inventor 师向群
Owner 深圳新视光电科技有限公司
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