Multiplex communications – Wide area network – Packet switching
Patent
1994-06-08
1996-07-02
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 953, H04J 306
Patent
active
055330150
ABSTRACT:
Transmission system comprising at least two subscriber devices exchanging information signals in the simplex mode. This transmission system comprises at least a remote and a near subscriber device (A1, B1) exchanging information signals in the simplex mode by means of a multiplex of the time-division type in which a control time interval is provided. For a communication between a remote subscriber and a near subscriber, a control time interval (XCCH) is allocated for the transmission of a request to speak made by one of the subscribers. The request to speak received by the other subscriber is used for preventing him from transmitting.
REFERENCES:
patent: 4564838 (1986-01-01), Boulogne et al.
patent: 4625308 (1986-11-01), Kim et al.
patent: 5091906 (1992-02-01), Reed et al.
patent: 5164942 (1992-11-01), Kamerman et al.
patent: 5212684 (1993-05-01), MacNamee et al.
International Switching Symposium, vol. II Mar. 1987, Phoenix (US) pp. 759-765; Robert et al: "Alctael Land Mobile System CD900 A Full Digital Cellular Approach Using Wideband TDMA".
39th IEEE Vehicular Echnology Conference, vol. 11, May 1989, San Francisco (US), pp. 712-717; A. Maloberti: "Radio Transmission Interface of the Digital Paneuropean Mobile System".
Guedes Yvon
Makowski Pierre
Sfez Remi
Olms Douglas W.
Schmitt Michael E.
Ton Dang
U.S. Philips Corporation
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