Multiple channel per burst TDMA multiple transponder network

Details Multiple channel per burst TDMA multiple transponder network Multiple channel per burst TDMA multiple transponder network

1977-07-07

1979-01-16

Brown, Thomas W.

325 4, H04J 306

Patent

active

041350596

ABSTRACT:
A time division multiple access (TDMA) communication system has a plurality of geographically separated stations including a first group of stations, each of which can communicate with any other station in the first group through a first transponder in a predetermined portion of a TDMA frame (intra-group traffic), and a second group of stations, each of which can communicate with any other station in the second group through a second transponder in a predetermined portion of a TDMA frame associated with the second transponder (intra-group traffic). The TDMA frames of the first and second transponders are synchronized and inter-group traffic, i.e., communications between a station in the first group and a station in the second group, takes place in another predetermined portion of each of the frames which is exclusive of the predetermined portion of both frames used for intra-group traffic. Transponder hopping is employed without requiring needless duplication of terminal equipment and, at the same time, assuring non-overlapping transmissions through the same transponder. The stations transmit in a multiple channel per burst format with fully variable demand assignment. The invention is a control method and apparatus for providing a control channel for (1) ascertaining the per-station intra-group and inter-group traffic requirements, (2) allotting each station the necessary burst position and duration (capacity), and (3) synchronizing burst length changes and movement of a station's bursts to insure non-interference with transmission of other stations.

REFERENCES:
patent: 3644678 (1972-02-01), Schmidt
patent: 3649764 (1972-03-01), Maillet
patent: 3818453 (1974-06-01), Schmidt et al.
patent: 4004098 (1977-01-01), Shimasaki

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