Status report method of automatic retransfer request

The invention discloses a kind of state report method of sender retransmits demand automatically, firstly sliding window of sender retransmits demand automatically is set ''maximum unacknowledged window threshold''; the ARQ noumenon sends ARQ PDU data pack to HARQ noumenon; the HARQ noumenon receives PDU from ARQ noumenon, and cascade or cascaded processed based on the instantaneous channel condition, sends HARQ PDU to receiver; the ARQ noumenon executes the window sliding operation based on the received message, and detects current unacknowledged window value; when it detects that it exceed the preset ''maximum unacknowledged window threshold'', it sends the ''demand state report message'' to the HARQ noumenon; the HARQ noumenon judges if the received message is ''demand state report message'' sent by the ARQ noumenon, the current saved accept confirmation message to the ARQ noumenon. The invention decreases time delay and increases the integral performance of system.