Patent ID: 7768961

Claim:
A method for reliable transmission of data, the method comprising: receiving a plurality of radio link control (RLC) unacknowledged mode (UM) protocol data units (PDUs) over at least one primary channel; receiving a plurality of RLC UM PDUs over at least one auxiliary channel, wherein the plurality of RLC UM PDUs received over the at least one auxiliary channel are identical to the plurality of RLC UM PDUs received over the at least one primary channel; on a condition that at least one RLC UM PDU is missing from the PDUs received over the primary channel, obtaining the missing RLC UM PDU from the auxiliary channel and completing a service data unit (SDU) by combining the PDUs received over the primary channel with the missing PDU obtained from the auxiliary channel; starting a timer on a condition that a next PDU, after the missing PDU, is received over the primary channel; stopping the timer on a condition that the missing PDU is received on the auxiliary channel; and deleting the PDUs received over the primary channel on a condition that the missing RLC UM PDU cannot be obtained from the auxiliary channel before the timer expires.