Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1991-11-25
1994-04-26
Kuntz, Curtis
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
379 60, H04M 1100
Patent
active
053074009
ABSTRACT:
A continuous and accurate location system for a mobile telephone subscriber which utilizes a temporary location indication as well as a registration location. If a visiting mobile subscriber sends a registration access, the visited system acknowledges the registration, records the mobile subscriber's presence and signals the mobile subscriber's home system of the mobile's presence. Receipt of the mobile's location from the visited system causes the mobile subscriber's home system to update its registration location data for that particular mobile. If a visiting mobile subscriber initiates a call access from within the visited system without registering within the visited system, the visited system allocates a record for the mobile indicating within the record that it has not received a registration from the mobile and transmits to the home system a temporary location signal. The home system stores the temporary location indication, without deleting the existing registration location data for the mobile subscriber and deletes the indication upon the conclusion of the mobile subscriber's call from within the visited system. The temporary location indication is used by the home system to effectuate the routing of calls for the mobile.
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Palmgren Christer
Sawyer Francois
Cumming William D.
Kuntz Curtis
Telefonaktiebolaget L M. Ericsson
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