Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1995-12-07
1998-10-20
Le, Thanh Cong
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455430, 455436, 455440, H04B 7185
Patent
active
058261885
ABSTRACT:
A method for handing off calls between differing radio telecommunication networks recognizes (302) a desire for an inter-network hand-off. When a Subscriber Unit (120) (SU) identifies (304) a new network, a hand-off with the new network can be requested (320). When the SU (120) does not identify (304) a new network, the old network requests (314) location information relevant to an inter-network hand-off from a Location Inter-Working Server (200) (LIWS). The LIWS (200) provides information about other networks which provide service to the SU location and, when another network provides service to the SU location, a hand-off with the other network can be requested (320).
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patent: 5649308 (1997-07-01), Andrews
Bishop, Jr. James William
Robinson William Neil
Tayloe Daniel Richard
Wild Johanna Alexandra
Cong Le Thanh
Motorola Inc.
Whitney Sherry J.
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