Multiplex communications – Wide area network – Packet switching
Patent
1993-08-16
1995-02-21
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 855, 370 8515, H04J 324
Patent
active
053922867
ABSTRACT:
Disclosed is a data transmission unit for use in a system wherein data to be transmitted is organized into packets which may be assigned one of four states: idle, occupied, released, or reset. Or these packets may be assigned one of three states: idle, occupied, or released, each state being able to include a reset bit. Each unit has terminals associated therewith and is assigned two windows on the number of packets it may transmit. One window is a parameter for transmitting data by using idle packets and the other is by using released packets. The unit responds to the state of a received packet, the state of the windows, and the presence or absence of transmit data to control whether the packet transmitted out of the unit is a packet from internal transforming buffers, a released packet from a released cell producing circuit, an occupied packet containing data from the unit's own terminals. A released packet contains the address of the unit which generated it and is generated when there is no data to be transmitted and an idle packet is received by the unit. Any unit can occupy a released packet with data from its terminal within the second window band, thereby increasing data throughput.
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A Study on the Architecture of a High-Speed Ring Network (ATMR) by Ito et al., Switching Systems Engineering, IEICE Technical Report, 1990, pp. 19-24 (with English Abstract).
Kubota Kouji
Tanaka Tsutomu
Hom Shick
Matsushita Electric - Industrial Co., Ltd.
Olms Douglas W.
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