Radio telecommunication network with fraud-circumventing registr

Details Radio telecommunication network with fraud-circumventing registr Radio telecommunication network with fraud-circumventing registr

1996-03-13

1998-08-04

Tarcza, Thomas H.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

G01S 502

Patent

active

057900736

ABSTRACT:
A system (28) provides communication services to mobile units (24). Mobile units (24) perform a unit-based location process (46, 48) to determine their locations. The system (28) performs a system-based location process (64, 66) to independently determine mobile unit locations. The system-based process may determine location less precisely than the unit-based process. A location selection process (104) evaluates the unit-determined location in view of a system-determined location error region to decide whether the unit-determined location is reliable. If the unit-determined location is reliable, it is used (120) to qualify communication services to be provided to the mobile unit (24). If the unit-determined location is unreliable, the system-based process is repeated (116) to improve the system-determined location precision, and the resulting system-determined location is used (118) to qualify communication services to be provided to the mobile unit (24).

REFERENCES:
patent: 5343512 (1994-08-01), Wang et al.
patent: 5365451 (1994-11-01), Wang et al.
patent: 5412388 (1995-05-01), Attwood
patent: 5412389 (1995-05-01), Olds
patent: 5444450 (1995-08-01), Olds et al.
patent: 5483664 (1996-01-01), Moritz et al.
patent: 5500648 (1996-03-01), Maine et al.
patent: 5515062 (1996-05-01), Maine et al.
patent: 5523997 (1996-06-01), Bishop

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