Method and apparatus for controlling measuring frequency of forbidden registration area in a mobile communication system

An apparatus for controlling a frequency measurement of a forbidden registration area of a User Equipment (UE) in a mobile communication system, the apparatus comprising:

• a forbidden registration area decider for determining whether the UE has entered into a cell within the forbidden registration area;
• a cell measurement controller for limiting measuring cells using a first frequency comprising a frequency of the forbidden registration area for a reference time, not considering the cells as candidates for cell reselection, when the UE enters into the cell within the forbidden registration area, and allowing measuring cells using receivable frequencies including the first frequency by considering the cells using the receivable frequencies as candidates for cell reselection, if no suitable cell for a normal service is found before the reference time expires;
• and
• a cell measurer for measuring cells using allowed frequencies under the cell measurement controller control.

A computer-readable recording medium storing a computer program code for performing a method of controlling a frequency measurement of a forbidden registration area in a mobile communication system, the code comprising executable instructions for:

• determining whether a User Equipment (UE) has entered into a cell within a forbidden registration area;
• limiting measuring cells using a first frequency comprising a frequency of the forbidden registration area for a reference time, not considering the cells as candidates for cell reselection, when the (UE) enters into a cell within the forbidden registration area;
• measuring cells using receivable frequencies including the first frequency by considering the cells using the receivable frequencies as candidates for cell reselection, if no suitable cell for a normal service is found before the reference time expires;
• and
• measuring cells using allowed frequencies.