A METHOD AND DEVICE FOR SEARCHING AND DEALLOCATING ABNORMAL TERMINAL IN WIRELESS PORTABLE INTERNET SYSTEM

摘要

A method and an apparatus for searching and releasing an abnormal terminal in a wireless mobile Internet system are provided to enhance efficiency in managing radio resources for a terminal by preventing a waste of the radio resources given to the terminal that is abnormally operated. An ACS(Access Controller Subsystem)(30) allocates one group number among periodical ranging code groups to a terminal according to a ranging request from the terminal and transmits the allocated group number and a corresponding code to the terminal. When a ranging request message is transmitted from the terminal, an ATS(Access Traffic Subsystem)(20) searches an abnormal terminal based on the ranging request message.