Title:
On Resource Management and QoS Guarantees For Long Range Dependent Traffic
On Resource Management and QoS Guarantees For Long Range Dependent Traffic
Authors
Adas, Abdelnaser M.
Mukherjee, Amarnath
Mukherjee, Amarnath
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Abstract
It has been known for several years now that variable-bit-rate
video sources are strongly auto-correlated. Recently, several
studies have indicated that the resulting stochastic processes
exhibit long-range dependence properties. This implies that
large buffers at intermediate switching points may not provide
adequate delay performance for such classes of traffic in
Broadband packet-switched networks (such as ATM).
Given these observations, and the need to provide guaranteed
maximum-delay and delay-jitter bounds, and low cell-loss
probabilities to applications, the solution appears to be
(a) allocating higher rates if the distribution tails are large,
(b) using multiplexing to narrow these tails,
(c) applying a per circuit frame-clock in conjunction with
an active cell-discard strategy
to deal with long-range dependence.
Strategy (c) is a version of the Stop and Go Stop queuing that
does not require tight deterministic rate specifications, but
provides maximum-delay and delay-jitter bounds over
multiple hops as in the original proposal.
The combined strategy is a hybrid between packet switching
and circuit switching technology.
This research was supported in part by the National Science Foundation
under grant NCR-9396299. This is a revised and extended version of a paper
that is to be presented at the IEEE Infocom '95 Conference in Boston
in April 1995.
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Date Issued
1994
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456016 bytes
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Technical Report