Multiplex communications – Wide area network – Packet switching
Patent
1994-09-27
1996-10-22
Hsu, Alpus H.
Multiplex communications
Wide area network
Packet switching
370 79, 370 853, 370 856, 370 8513, 370 943, H04J 302
Patent
active
055684696
ABSTRACT:
An Ethernet network or other CSMA/CD network includes hub adaptors that are modified to provide a known bounded low maximum access latency. The modified adaptors maintain a state variable whose values indicates whether the last operation by the adaptor was a transmit or a receive. In the case where the last operation was a receive, the adaptor transmits a packet with a minimum or zero backoff and as an option with a reduced interpacket gap. In the case where the last operation was a transmit, the adaptor waits before transmitting a packet a period of time that allows the other node on the channel to transmit a packet if the other node has a packet to transmit.
REFERENCES:
patent: 5319641 (1994-06-01), Fridrich et al.
patent: 5343473 (1994-08-01), Cidon et al.
patent: 5351241 (1994-09-01), Yehonatan
patent: 5353287 (1994-10-01), Kuddes et al.
patent: 5355375 (1994-10-01), Christensen
Hickey John F.
Lo Lai-Chin
Sherer William P.
3Com Corporation
Allen Kenneth R.
Hsu Alpus H.
LeBlanc Stephen J.
Ngo Ricky Q.
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