Multiplex communications – Wide area network – Packet switching
Patent
1994-05-24
1996-02-06
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 8512, 370 8515, H04J 316
Patent
active
054901456
ABSTRACT:
The invention provides a communication network system which permits parallel access of a plurality of nodes to a transmission line and which has a high throughput and low delay, with fairness among the nodes maintained. In the communication network system, a plurality of tokens correspondingly associated with the nodes, respectively, are allowed to circulate on the transmission line. Each node is allowed to transmit data only when the frame insertion buffer is empty. The node, when having data to be transmitted, awaits the arrival of a token. If a token that has arrived corresponds to the self node, or if a node corresponding to the arrived token is downstream of the destination node as viewed from the own self node, the node forms a packet from its holding data and transmits it onto the transmission line.
REFERENCES:
patent: 4567590 (1986-01-01), Bederman
patent: 4932023 (1990-06-01), Geyer et al.
patent: 5155725 (1992-10-01), Khalil
patent: 5274637 (1993-12-01), Sakamura et al.
Asano Hiroaki
Iwasaki Shiro
Nishioka Shinako
Tanabe Takumi
Tanaka Osamu
Matsushita Electric Industrial Company Ltd.
Ngo Ricky Q.
Olms Douglas W.
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