Patent ID: 8121152

Claim:
A method for encoding a broadcast channel protocol data unit (BCH PDU) based on a broadcast control channel (BCCH) scheduling error in a universal mobile telecommunications system (UMTS) having a Node B and a radio network controller, the method comprising: (a) setting up a call between the radio network controller and the Node B to receive system information and scheduling information for a system information update from the radio network controller; (b) initializing the broadcast channel protocol data unit and control information for every system frame number (SFN) at the Node B; (c) detecting the broadcast control channel scheduling error on the scheduling information for the system information update based on segment types of the system information when combining the system information for every system frame number; and (d) in case the broadcast control channel scheduling error is not detected in the step (c), encoding the broadcast channel protocol data unit to be incorporated therein the system information, wherein, in the step (d), the broadcast channel protocol data unit for every system frame number is encoded using control parameters, each of the control parameters including a first parameter indicating a bit position in the broadcast channel protocol data unit and a second parameter indicating a right shift amount of a segment existing in the broadcast channel protocol data unit, wherein a new segment is to be added into the bit position.