Method and system for controlling user traffic to a fast packet

Details Method and system for controlling user traffic to a fast packet Method and system for controlling user traffic to a fast packet

1992-06-04

1995-01-10

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 941, H04J 314, H04Q 1104

Patent

active

053814070

ABSTRACT:
A method and system are provided for controlling user traffic to a fast packet switching system using the leaky bucket scheme. Each of the packets (53 byte length cell) originates at a source of packets and has a virtual channel identifier (VCI). The method includes the step of receiving the packets, each of the packets having associated therewith an arrival time. The packets are stored at an addressable location in a first memory. The first memory having a plurality of addressable locations. In a second memory, there are stored addresses corresponding to the addressable locations in the first memory in which a packet is not yet stored. The addresses stored in the second memory are utilized in the step of storing the received packets. A credit manager circuit determines whether a stored packet complies with predetermined traffic parameters such as average arrival rate and maximum burst rate. This determination is based on a packet's arrival time and its VCI to obtain a validated packet. The credit manager circuit retrieves the validated packet from the first memory and the retrieved packet is then transmitted to the packet switching system.

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L. Zhang, "VirtualClock: A new traffic control algorithm for packet switching networks," in Proc. SIGCOMM '90, Philadelphia, Pa., Sep. 1990, pp. 19-29.
J. S. Turner, "New directions in communications (or which way to the information age?)" IEEE Commun. Mag., vol. 24, No. 10, pp. 8-15, Oct. 1986.

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