Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1997-09-16
1999-09-07
Bost, Dwayne D.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455457, 701300, H04Q 720
Patent
active
059501375
ABSTRACT:
A method, for use in a mobile communications system having a plurality of mobile stations (MS's) and a mobile subscriber information register (MSIR), provides a requesting MS with location information (LI) of a target MS. At a first step, a LI request signal, including a subscriber number assigned to the target MS, a service code representing a LI supplying service and a secret number, is received from the requesting MS. At a second step, it is checked whether the service code of the LI supplying service is included in the subscriber information of the target MS stored in the MSIR. At a third step, if the service code of the LI supplying service is included in the subscriber information of the target MS, it is checked whether the secret numbers included in the subscriber information of the target MS and the LI request signal are identical each other. At a fourth step, if the secret numbers included in the subscriber information of the target MS and in the LI request signal are identical, the LI of the target MS is retrieved from the MSIR. At a fifth step, a current location of the target MS is checked. At a sixth step, it is checked whether the current location and the location represented by the retrieved LI of the target MS are identical. At a final step, if the determination, result obtained in the sixth step is affirmative, the retrieved LI is sent to the requesting MS.
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Bost Dwayne D.
Daewoo Telecom Ltd.
Vuong Quochien B.
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