Method and system for controlling TDMA timing in satellite commu

Details Method and system for controlling TDMA timing in satellite commu Method and system for controlling TDMA timing in satellite commu

1996-12-12

1999-11-23

Horabik, Michael

Multiplex communications

Communication over free space

Repeater

370324, 370347, 370350, 370503, 370337, 455 132, 713400, H04B 719

Patent

active

059912804

ABSTRACT:
A TDMA timing control method and apparatus for use in a TDMA satellite communication network synchronizes land earth stations in a global beam system and even in a multi beam system having generally no return channel. A land earth station of the satellite network generates a transmission timing thereof on the basis of its own time base and detects a receiving time of a signal from another land earth station. Times of the land earth stations are synchronized by exchanging the information of their own transmission timing and the receiving times of the signals with other land earth stations through control bursts, calculating time errors of their own time bases by solving simultaneous equations including time errors of the time bases of the other land earth station and propagation times to the satellite as unknown quantities and correcting the times of the time bases on the basis of the time errors.

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patent: 5867489 (1999-02-01), Hershey et al.
patent: 5878034 (1999-03-01), Hershey et al.

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