Patent ID: 7187677
Filing Date: 2007-03-06
Classification: H04L

Abstract:
1. A method for use in data unit transmissions between a transmitter and a receiver implemented in the receiver, comprising: detecting a sequence number of data units received by the receiver; storing the received data units in a buffer; identifying a missing data unit in the sequence; starting a timer if a data unit is received having a sequence number greater than a sequence number of the missing data unit; if the timer expires before the missing data unit is received, removing from the buffer the received data units having sequence numbers less than the sequence number of the missing data unit; receiving the missing data unit before the timer expires; stopping the timer; and removing the received data units having a sequence number less than the sequence number of the missing data unit, the received missing data unit and the received data units each having a sequence number less than the sequence number of the received missing data unit are sent to a higher protocol layer for further processing.