Synchronous frame capture method and device

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 ...

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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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