Patent ID: 6741581
Filing Date: 2004-05-25
Classification: H04L

Abstract:
A method for transmitting data frames in a communications system comprising a transmitter and a receiver, comprising:transmitting a data frame from said transmitter to said receiver; when said transmitter receives a request from the receiver for retransmission of said data frame, retransmitting said data frame to the receiver without transmitting a signaling message identifying said retransmitted data frame; receiving said retransmitted data frame at said receiver; comparing said received retransmitted data frame to other data frames stored in a buffer to locate a potentially matching data frame which potentially matches said received retransmitted data frame and to determine a probability of a match between said received retransmitted data frame and said potentially matching data frame; when a probability of a match between said received retransmitted data frame and one of said data frames in said buffer exceeds at least a first threshold, said receiver soft combines said received retransmitted data frame with the potentially matching said one data frame to form a soft combined data frame; when said probability is below the first threshold, storing said received retransmitted data frame in said buffer; verifying a criteria of said soft combined data frame; and when said criteria of said soft combined data frame is unacceptable, comparing said probability to a second threshold.