WE CLAIM:
1. A communication method performed in a mobile communication system which
comprises user equipment, base stations, and a radio network controller managing an
access made by the user equipment to the base stations and a tracking area for tracking a
location of the user equipment, the method comprising:
requesting an update of the tracking area from the user equipment to the radio network controller through the base stations manually selected by the user equipment;
checking, in the radio network controller, whether the access made by the user equipment to the base stations is allowed; and
rejecting the update of the tracking area from the radio network controller to the user equipment through the base stations, when the access made by the user equipment to the base stations is not allowed.
2. A mobile communication system comprising:
user equipment;
base stations; and
a radio network controller configured to manage an access made by the user equipment to the base stations and a tracking area for tracking a location of the user equipment, wherein
the user equipment is configured to request an update of the tracking area to the radio network controller through the base stations manually selected by the user equipment, and
the radio network controller is configured to
check whether the access made by the user equipment to the base stations is allowed, and
reject the update of the tracking area to the user equipment through the base stations, when the access made by the user equipment to the base stations is not allowed.
3. A user equipment in a mobile communication system comprising a plurality of user
equipment that includes the user equipment, base stations, and a radio network controller
managing an access made by the user equipment to the base stations and a tracking area
for tracking a location of the user equipment, the user equipment comprising:

circuitry configured to request an update of the tracking area to the radio network controller through the base stations manually selected by the user equipment.
4. A radio network controller in a mobile communication system comprising user equipment, base stations, and a radio network controller managing an access made by the user equipment to the base stations and a tracking area for tracking a location of the user equipment, the radio network controller comprising: circuitry configured to
check whether the access made by the user equipment to the base stations is allowed, when an update of the tracking area through the base stations manually selected by the user equipment is requested; and
reject the update of the tracking area to the user equipment through the base stations, when the access made by the user equipment to the base stations is not allowed.