Multiplex communications – Wide area network – Packet switching
Patent
1984-04-20
1986-06-10
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370104, H04J 306
Patent
active
045947066
ABSTRACT:
In a packet communication system of a multiaccess type in which a single communication medium is used commonly and divided into a plurality of channels, respective users observe states of the channels and the probability of packet transmission to respective channels is controlled in accordance with observed information, respective users are assigned parameters corresponding to respective channels and the probability of packet transmission onto the channels is controlled according to the parameters, a dummy packet is continuously transmitted for a predetermined time at in channels having low utilization factors, for data requiring immediate transmission. In a modification, a setup packet is sent for data requiring immediate transmission. All the users determine whether the received packet is the setup packet and the set the stored parameters. Accordingly, in another modification, a setup packet is transmitted for data requiring immediate transmission and a dummy packet is continuously transmitted in a channel for which the origination setting packet is successful.
REFERENCES:
patent: 4154983 (1979-05-01), Pedersen
patent: 4322845 (1982-03-01), Fennel, Jr. et al.
patent: 4482999 (1984-11-01), Janson et al.
patent: 4491947 (1985-01-01), Frank
patent: 4504946 (1985-03-01), Raychaudhuri
"Priority Based Packet Reservation Demand Assignmemt TDMA System", Electronics and Communications in Japan, vol. 66-B, No. 4, 1983.
"Demand Assignment TDMA System for Integrated Digital Satellite Communication Experiment", Japan Telecomm. Review., vol. 23, No. 1, 1981.
NEC Corporation
Olms Douglas W.
Rokoff Kenneth I.
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