Data processing method and device for frame synchronization, and communication system and communication device

A data processing method for frame synchronization, comprising:

• obtaining a sampled data fragment from a received data stream;
• detecting whether the sampled data fragment has a set pattern by performing an autocorrelation processing;
• determining that the sampled data fragment has the set pattern when a processing result of the autocorrelation processing meets a predetermined condition, and determining that the sampled data fragment is a frame parameter field, to position the frame parameter field, wherein the frame parameter field is generated by merging the frame parameter information and related frame parameter information corresponding to the frame parameter information by a sending end and has the set pattern;
• and
• the frame structure data is obtained from the data stream according to the frame parameter field, wherein the frame structure data is obtained by the sending end by packing the frame parameter field with payload data;
• wherein, the autocorrelation processing comprises:
• instructing the receiving end to collect data fragments in the data stream, perform specified processing on the data fragments, conduct correlation detection of unprocessed data fragments and processed data fragments, and determine whether the data fragments conform to the set pattern based on detection results.

A communication system, including a sending end and a receiving end;

• wherein, a device at the sending end of the communication system is a walkie-talkie and a device at the receiving end is a walkie-talkie;
• the walkie-talkie of the sending end comprising a memory, a processor and computer readable instructions stored on the memory and executable by the processor, when executed by the processor, the computer readable instructions instruct the processor to:
• generate related frame parameter information corresponding to frame parameter information based on the frame parameter information, and merge the frame parameter information with the related frame parameter information to generate a frame parameter field with a set pattern;
• pack the frame parameter field with payload data to obtain frame structure data;
• and
• send the frame structure data, wherein the set pattern is used by a receiving end to position the frame parameter field in a received data stream, and subsequently to obtain the frame structure data from the data stream based on the frame parameter field;
• the walkie-talkie of the receiving end comprising a memory, a processor and computer readable instructions stored on the memory and executable by the processor, when executed by the processor, the computer readable instructions instruct the processor to:
• obtain a sampled data fragment from a received data stream;
• detect whether the sampled data fragment has the set pattern by performing an autocorrelation processing;
• determine that the sampled data fragment has the set pattern when a processing result of the autocorrelation processing meets a predetermined condition, and determine that the sampled data fragment is a frame parameter field, to position the frame parameter field;
• and
• wherein the frame structure data is obtained from the data stream according to the frame parameter field, wherein the frame structure data is obtained by the sending end by packing the frame parameter field with payload data;
• wherein, the autocorrelation processing comprises:
• instructing the receiving end to collect data fragments in the data stream, perform specified processing on the data fragments, conduct correlation detection of unprocessed data fragments and processed data fragments, and determine whether the data fragments conform to the set pattern based on detection results.