| 摘要 |
PROBLEM TO BE SOLVED: To reduce a load to a radio base station control device and network that is caused by often registering in the radio base station control terminal device 1 a call area generated when a radio terminal device moves in the vicinity of the call area border. SOLUTION: The radio terminal device PS having a plurality of call area PA information includes a timer 11c for determining timing to delete the call area information that is not required to be held in the call area information 12a. COPYRIGHT: (C)2009,JPO&INPIT
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