Communications method and network with frequency allocation

Details Communications method and network with frequency allocation Communications method and network with frequency allocation

1992-01-24

1994-04-26

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359120, 370 691, 370 951, H04B 1020, H04J 1402

Patent

active

053071913

ABSTRACT:
Calls are made in known manner between terminals in the form of information-carrying modulation applied to emission waves that travel along common transmission lines. An emission frequency (F(2P-1)) is allocated to each terminal for each call. According to the invention, a marking wave is supplied to all of the terminals while no call is yet being set up, thereby marking an emission frequency. When a new call is being set up, the marked frequency is allocated for the new call to at least one of the terminals that are to participate in the call. The invention is particularly applicable to communications by means of optical fibers.

REFERENCES:
patent: 4339816 (1982-07-01), Reed
patent: 4797879 (1989-01-01), Habbab
patent: 4868811 (1989-09-01), Suzuki
patent: 5093743 (1992-03-01), Eng
patent: 5127067 (1992-06-01), Delcoco
Habbab et al, "Protocols for Very High-Speed Optical Fiber Local Area Networks Using a Passive Star Topology", J of Lightwave Technology v. LT-5 n.12, Dec. 1987.
N. Shimosoka, et al., "Photonic Wavelength-Division . . . ", IEEE Photonics, Techn. Letters, N.Y., vol. 2, No. 4, Apr. 1990, pp. 301-303.
H. G. Alles, "An Intelligent Network . . . ", Proceedings, 1978 Int'l. Zurich Seminar on Digital Comm., Zurich, Mar. 1978, pp. A5.1-A5.6.
S. Suzuki, et al., "A Photonic Wave length-Division . . . ", Conf. Record, IEEE Int'l. Conf. on Comm., Boston, Jun. 1989, vol. 2, pp. 722-727.

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