System for determining and registering location of mobile termin

Details System for determining and registering location of mobile termin System for determining and registering location of mobile termin

1994-07-29

1996-08-06

Tarcza, Thomas H.

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

Directive

Including a satellite

342352, 455 121, G01S 502

Patent

active

055438130

ABSTRACT:
The non-geosynchronous orbiting satellites each transmit identification information given to each of spot beams irradiated from them. A mobile terminal, when registering its location, receives the spot beam identification information at some moments in time with the predetermined time interval. Then, the mobile terminal transmits the received spot beam identification information and each of their reception time together with the terminal identification information assigned to the mobile terminal. On the basis of an overlapped area of spot beam coverage areas at time when each of identification information is received by the terminal, a terrestrial network estimates and registers the latest location of the mobile terminal.

REFERENCES:
patent: 4652884 (1987-03-01), Starker
patent: 5396643 (1995-03-01), Frenzer et al.

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