Patent ID: 8855666

Claim:
A location registration processing method in which a mobile station performs location registration processing using an RRC connection message based on a predetermined system information, the method comprising the step of starting, at the mobile station, the location registration processing on the basis of a Master Information Block (MIB) and a first and a second System Information Block (SIB 1 to SIB 2 ), when acquiring the MIB and SIB 1 to SIB 2 among a plurality of pieces of system information broadcasted by a radio base station, and before completing acquiring the rest of the plurality of pieces of system information, the MIB and SIB 1 to SIB 2 comprising information necessary for performing the location registration processing, wherein the plurality of pieces of system information comprises the MIB, the SIB 1 to SIB 2 , and SIBs (System Information Blocks) 3 to 8 ; and wherein SIBs 3 to 8 are pieces of system information which includes information that the mobile station UE needs for performing cell selection or cell reselection.