APPARATUS AND METHOD OF CONTROLLING CELL SELECTION OR CELL RESELECTION IN WIRELESS COMMUNICATION SYSTEM

摘要

The present invention relates to an apparatus and a method of controlling cell selection or cell reselection in a wireless communication system. The present specification discloses a terminal including a receiving unit for receiving an RRC connection release message from a base station; a message processing unit for acquiring exclusive priority contained in the RRC connection release message and a value of a timer which defines the duration of the exclusive priority; a cell change processing unit for controlling start, stop, and expiration of the timer; and a transmitting unit for transmitting a random access preamble to the base station. Even before the timer for maintaining the exclusive priority is expired, the terminal may move to a frequency band other than the frequency band of the exclusive priority, and may reselect a cell in a frequency band better than the cell in the current frequency band, thereby solving problems of delaying call setup or the like for the terminal. [Reference numerals] (AA) START; (BB) END; (S800) Start T320; (S805) T320 stopping condition satisfied?; (S810) Stop T320 timer; (S815) Reselect cell (Priority provided from system information); (S820) Reselect cell (Exclusive priority)