Mobile telephone for roaming using dual mode/band equipment incl

Details Mobile telephone for roaming using dual mode/band equipment incl Mobile telephone for roaming using dual mode/band equipment incl

1996-02-16

1999-12-07

Cumming, William

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455436, 455552, 455435, 455558, 379357, H01S 400

Patent

active

059998113

ABSTRACT:
According to exemplary embodiments of the present invention, mobile stations are provided with a preferred roaming selection list at a predetermined memory location in a subscriber identity module (SIM). The preferred roaming selection list identifies and prioritizes network operators to which that mobile station can be connected. Pointers are provided in the preferred roaming selection list to memory locations in the SIM where lists of networks associated with each entry in the list are stored. The memory locations are specified to be compatible with existing standards. The preferred roaming selection list can be modified over the air interface, e.g., via SMS class 2 messages, or by the user via the keypad of the mobile station.

REFERENCES:
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patent: 5093926 (1992-03-01), Sasuta
patent: 5159625 (1992-10-01), Zicker
patent: 5463675 (1995-10-01), Gerszberg
patent: 5586338 (1996-12-01), Lynch et al.
patent: 5610919 (1997-03-01), Willard et al.
patent: 5613204 (1997-03-01), Haberman et al.
patent: 5666650 (1997-09-01), Turcotte et al.
patent: 5675628 (1997-10-01), Hokkanen
International Search Report re PCT/US97/02122 Date of mailing of search report: Jul. 16, 1997.

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