Method for detecting delayed data frames in a transport function

Of transmission function retards frame for testing, comprising the following steps: compare the frame sorting serial number and stipulation threshold value (304); And the separation serial number super-junction threshold value and detecting is of the delay frame; Delay frame according and corresponding processing for detecting (306). The RLP data transmission protocol; the same frame can be reproduction process frame. The threshold value can be proportional with such conductor; the conductor is a methods group claims from the maximum value frame is multiplied formed between each of the same frame is fixed with air transmitted to the surface frame and focusing of delay unit.