Method and device for selecting one station from a set of statio

Details Method and device for selecting one station from a set of statio Method and device for selecting one station from a set of statio

1984-09-20

1987-12-15

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 89, 370 95, 3408255, H04J 302, H04Q 1900

Patent

active

047138050

ABSTRACT:
In a method of selecting one station from a set of stations dialoging with a main station, the main station consults groups of stations one at a time, sending a consultation message to each group consulted. Within each group, stations having information to transmit request reservation of a multiplex link time slot connecting the group to the main station. Each station having information to transmit makes this request after a time delay which depends on the address of the station within the group has elapsed since reception of a synchronization signal. When the main station consults a group, only the station which has reserved this multiplex link can send over the link. In a system implementing this method, each group of stations comprises a self-assigned bus and a synchronization signal link. Each station comprises an assignment system connected to the self-assignment bus and to a microproccessor in the station.

REFERENCES:
patent: 3978451 (1976-08-01), Ito et al.
patent: 4199662 (1980-04-01), Lowe
patent: 4539679 (1985-10-01), Bux et al.
patent: 4550402 (1985-10-01), Gable et al.
patent: 4567589 (1986-01-01), Lecomte et al.
IBM Technical Disclosure Bulletin, vol. 18, No. 2, Sep. 1974, N.Y. U.S., J. L. Dellheim et al.: "Polling Method Using Subgroups of Polled Stations", p. 1131, a whole.
Electronic Engineering, vol. 50, No. 606, May 1978, Londres (GB) C. Moller: "A Simple Data Bus for Low Data Rates", pp. 41-43, p. 41 right column, line 26-p. 43, left column, line 20.
Electrical Communication, vol. 56, No. 1, 1981 New York U.S., E. A. Smith et al: "Impact of Non-Voice Services on Network Evolution", pp. 17-30--p. 26, FIGS. 3, 4.

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