APPARATUS AND A METHOD FOR RECOVERING THE INCONSISTENCY OF CIPHERED PARAMETERS IN A WIRELESS COMMUNICATION SYSTEM, CAPABLE OF DETERMINING WHETHER OR NOT THE CIPHERED PARAMETERS ARE MISMATCHED IN A LOWER LAYER

摘要

PURPOSE: An apparatus and a method for recovering the inconsistency of ciphered parameters in a wireless communication system are provided to prevent the stop of data transmission or the degradation of data throughput by rapidly recovering the inconsistency of the ciphered parameters in a lower layer.;CONSTITUTION: A receiving terminal in a wireless communication system comprises a radio frequency (RF) processing part (610), a modem (620), a storage part (630), and a control part (640). The RF processing part transmits and receives signals for band conversion, amplification, and others through a wireless channel. The modem converts a base band signal and a bit string according to the size of a physical layer of the system. The storage part stores data on basic programs, application programs, and setting information for the operation of the receiving terminal. A radio link control (RLC) processing part (642) of the control part generates ciphered key streams using ciphered parameters stored in the storage part; and ciphers and deciphers RLC protocol data units transmitted by the ciphered key streams. The RLC processing part recombines the payload of the RLC protocol data units to generate an IP packet.;COPYRIGHT KIPO 2013;[Reference numerals] (610) Radio frequency (RF) processing part; (620) Modem; (630) Storage part; (640) Control part; (642) Radio link control (RLC) processing part; (644) IP processing unit; (AA) Encoding parameter