Method for establishing communications in a network of frequency

Details Method for establishing communications in a network of frequency Method for establishing communications in a network of frequency

1982-12-13

1986-03-25

Cangialosi, Salvatore

Telecommunications

Carrier wave repeater or relay system

Frequency or phase modulation

375 21, 178 2217, H04K 100

Patent

active

045788170

ABSTRACT:
In order to establish communications in a conference network of transmitter-receiver stations, each station establishes a frequency-jumping standby law while a calling station transmits a frequency-diversity call sequence on said standby law and the other stations are listening in accordance with said standby law. Furthermore, each station establishes a second frequency law which is synchronous with the standby law but the stair-steps of which are of longer duration. At the end of a call sequence, the calling station and the stations which have detected this sequence are put in the listening state over a time interval t.sub.1 at the corresponding possible traffic frequency of the second frequency law. Each station which has detected a signal then transmits a jamming signal over a time interval t.sub.2 at the aforementioned traffic frequency and the stations which have not detected any signal extend the listening period by the same time interval t.sub.2. Non-reception of a signal during the time interval t.sub.2 makes it possible to establish a communication at the corresponding frequency.

REFERENCES:
patent: 4013958 (1977-03-01), Spayth
patent: 4193030 (1980-03-01), Rabow et al.
patent: 4308617 (1981-12-01), German, Jr.
patent: 4320514 (1982-03-01), Haskell
patent: 4341925 (1982-07-01), Doland
patent: 4383323 (1983-05-01), Timor
patent: 4476566 (1984-10-01), Dent
patent: 4479226 (1984-10-01), Prabhu et al.

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