Synchronization frame encoding and decoding method and device

An encoding method and a decoding method technology, which are applied in the field of encoding and decoding methods of synchronization frames and devices thereof, and can solve the problems of synchronization errors of receivers, errors in receiving signaling data, etc.

Inactive Publication Date: 2008-04-30
HUAWEI TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In this scheme, an error in any bit of the index number of any synchronization frame may cau

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  • Synchronization frame encoding and decoding method and device
  • Synchronization frame encoding and decoding method and device
  • Synchronization frame encoding and decoding method and device

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Embodiment Construction

[0071] The core idea of ​​the present invention is to add a check bit in the synchronization frame to ensure the correctness of the index number of the synchronization frame, so as to achieve correct time synchronization of the data frame. The basic content of the present invention includes the coding method and the decoding method of the synchronization frame:

[0072] The coding method of the synchronization frame: when the sender generates the synchronization frame, in addition to constructing the synchronization sequence and the index number, it also constructs the check digit according to the synchronization sequence and the index number, and then combines the synchronization sequence, the index number and the check digit to generate Synchronization frame, and then send the synchronization frame and the valid data frame in sequence;

[0073] The decoding method of the synchronization frame: the receiver finds the frame header of the synchronization frame according to the sync...

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Abstract

The invention discloses a synchronous frame encoding method, which comprises the following steps: A, a synchronization sequence and an index number of a synchronous frame are generated; B, a check bit is formed in accordance with the generated synchronization sequence and the index number; C, the synchronous frame including the check bit is assembled in accordance with the synchronization sequence, the index number and the check bit and is then transmitted. The invention also discloses a synchronous frame decoding method, a synchronous frame encoder and a synchronous frame decoder. The inventive proposal is able to make the synchronization sequence and the index number of the synchronous frame process certain error correction capability, thereby effectively offsetting the various interference in the wireless communication channel; the invention is able to make the receiver check the error to the synchronous frame, thereby greatly improving the reliability and effectiveness of the communication.

Description

Technical field [0001] The present invention relates to the field of communication technology, and in particular to a method and device for encoding and decoding a synchronization frame. Background technique [0002] How to achieve precise synchronization of data frames has always been a difficult problem in communication, and therefore it is also a key technology in communication systems. Synchronization technology mainly includes two aspects: time synchronization and frequency synchronization. Without precise time synchronization, we cannot know the exact starting position of the signal, which will make the receiver's interpretation of the signal completely wrong. [0003] E.g figure 1 As shown, the abscissa of the coordinate axis represents symbols arranged in chronological order, and A and B represent symbol sequences. The correct data frame signal is the A sequence, that is, symbols 1-100; but because of synchronization errors, the 10th symbol is mistaken as the starting po...

Claims

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Application Information

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IPC IPC(8): H04L7/04H04J3/06
Inventor 武雨春
Owner HUAWEI TECH CO LTD
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