Patent ID: 8396080

Claim:
A method of processing a radio link control (RLC) protocol data unit (PDU) at a RLC layer operating in an unacknowledged mode (UM) in a mobile communication system, the method comprising: receiving at least one RLC PDU from a lower layer, the at least one RLC PDU corresponding to an RLC service data unit (RLC SDU); determining whether the at least one RLC PDU includes a start point of the RLC SDU when the RLC SDU fails to be reassembled from the at least one RLC PDU; reassembling the at least one RLC PDU to generate a partial RLC SDU if the at least one RLC PDU includes the start point of the RLC SDU; and discarding all of the at least one RLC PDU if none of the at least one RLC PDU includes the start point of the RLC SDU.