Patent ID: 8325692

Claim:
A device for receiving data in a communication system, the device having an acknowledged mode (AM) radio link control (RLC) layer that comprises: a demux/routing module for transferring RLC protocol data units (PDUs) received from a transmitting side, the RLC PDUs comprising D/C fields indicating whether the RLC PDUs are control PDUs on which ciphering has not been performed by the transmitting side or data PDUs on which ciphering has been performed by the transmitting side, wherein the RLC PDUs are transferred to a deciphering module if the RLC PDUs are data PDUs or transferred to an RLC control unit if the RLC PDUs are control PDUs; the deciphering module for deciphering the RLC PDUs that are data PDUs; a receiver buffer for storing the deciphered RLC PDUs; a header removal module for removing headers from the deciphered RLC PDUs; and a reassembly module for reassembling the deciphered RLC PDUs into an RLC service data unit (SDU).