Patent ID: 6765885
Filing Date: 2004-07-20
Classification: H04L,H04W

Abstract:
A method for determining acceptable ranges of received sequence numbers in a wireless communications protocol, the wireless communications protocol utilizing:protocol data units (PDUs) for transmitting service data units (SDUs), each PDU comprising a sequence number of n bits for indicating a relative sequential ordering of the PDU in a transmitted or received stream of PDUs; and a transmission time interval (TTI) in which a predetermined number of PDUs are transmitted or received in a predetermined time interval; the method comprising:receiving the predetermined number of PDUs within a TTI; determining a starting sequence number and an ending sequence number for the received PDUs within the TTI; and discarding any received PDU within the TTI that has a sequence number that is sequentially before the starting sequence number or that is sequentially after the ending sequence number; wherein obtaining the ending sequence number comprises utilizing information of the predetermined number of PDUs within the TTI.