Bandwidth allocation in a shared transmission channel employing

Details Bandwidth allocation in a shared transmission channel employing Bandwidth allocation in a shared transmission channel employing

1992-12-18

1995-08-29

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 857, 370 856, H04J 314

Patent

active

054467357

ABSTRACT:
In a local area network segment, the bandwidth in the channel between a network interface device, e.g., a port, switching hub, router, bridge or server, and one or more associated station is shared as follows. At the network interface device, a variable is maintained which stores information relating to the success or failure of transmission of packets in the channel. If the channel is sensed idle, the network interface device transmits the packet with probability 1. If the channel is sensed busy, the network interface device senses the channel for an end-of-carrier signal and, thereafter, waits a period of time equal to the interframe gap g. In addition, after an additional delay period .zeta., the network interface device reattempts to transmit the packet in the channel. If the variable maintained by the network interface device is less than a certain limit, the delay .zeta. is selected according to a first basic bandwidth allocation protocol. If the variable is greater than or equal to the limit, the delay is selected according to a second basic bandwidth allocation protocol.

REFERENCES:
patent: 4380088 (1983-04-01), Lipcon
patent: 4594706 (1986-06-01), Kobayashi
patent: 4766591 (1988-08-01), Huang
John D. Spragins, "Telecommunications Protocols and Design" Sect 5.25 Feb. 1991, pp. 227, 229, 230.

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