Patent ID: 7583699

Claim:
In a wireless communication system that employs a layered radio interface protocol, an apparatus comprising: a radio resource control (RRC) layer; a medium access control (MAC) layer; and a radio link control (RLC) layer comprising at least three data transmission mode entities, the at least three data transmission mode entities including: a transparent mode RLC entity adapted to control the transmission of data units between the RRC layer and the MAC layer by segmenting and reassembling data units that have no headers; an unacknowledged mode RLC entity adapted to control the transmission of data units between the RRC layer and the MAC layer by framing and deframing data units and detect and discard data units that contain an error; and an acknowledged mode RLC entity adapted to control the flow of data units between the RRC layer and the MAC layer by framing and deframing data units and by error correction.