Signal assessed user terminal system access in satellite communi

Details Signal assessed user terminal system access in satellite communi Signal assessed user terminal system access in satellite communi

1997-08-22

2000-04-18

Trost, William G.

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455 131, H04Q 738

Patent

active

060525878

ABSTRACT:
A satellite communications system comprises satellites 9A-C, earth stations 7A-E, user terminals 11 and controlling gateways 3 in the form of mobile satellite switching centers 5A-E. Access to and from a user terminal 11 may be gained from and to a terrestrial telephone system 1 by earth stations 7A-E contacting the satellites 9A-C and by the satellites contacting the user terminals 11. The satellites 9A-C periodically broadcast messages indicative of the earth station 7A-E with which they are instantly in contact. The user terminal 11 listens to these broadcasts, assesses the quality of the received signal, and keeps a league table based on an accumulated score allocated to each earth station 7A-E which can be heard. When calling into the system, the user terminal pages earth stations in descending order of score in the league table. When in contact, the user terminal 11 sends the league table to the system. When subsequently trying to contact the user terminal 11, the system uses earth stations in descending order of score in the league table, last received from the user terminal.

REFERENCES:
patent: 5327572 (1994-07-01), Freeburg
patent: 5481592 (1996-01-01), Azer
patent: 5590395 (1996-12-01), Diekelman
patent: 5619209 (1997-04-01), Horstein et al.
patent: 5652750 (1997-07-01), Dent et al.
patent: 5655005 (1997-08-01), Wiedeman et al.
patent: 5832379 (1997-10-01), Mallinckrodt
patent: 5860058 (1996-08-01), Daniel et al.

Affiliated with

Also associated with

Rating

Signal assessed user terminal system access in satellite communi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Signal assessed user terminal system access in satellite communi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal assessed user terminal system access in satellite communi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2344291