Method and apparatus for transmitting and receiving a data block in a wireless communication system

The invention claims a using the hybrid automatic repeat request protocol in wireless communication system based on a method and a device for data transmission. The component according to method the invention claims, wherein emitting end, firstly to supply component data or which is connected decoded and subsection and supplementary known data, using the code in the length of each data connection with different, and then and uniform coding obtained data packet the output. The receiving end, data packet data comprise a connection information section of the line, fixedly decodes; aThe data packet is comprise a information of the line, a buffer the data wire of a information of the data wire and corresponding a information section of the data wire of received unmating the correctly not decoded, with a current is not connected decoded and first and secondary decoding, a section of the data wire. Coding scheme for the invention claims a linear code and code rate of different different transmission table, made of simplifying decodes for realizing device, a data connection with the corresponding decoding is by of the constant-speed coding is not connected decoded provides on-off of secondary decoding, so the decoding improving reliability, wherein efficiency improving transmission of power system.