Preserving quality of service guarantees in spite of flowaggregation
Cobb, J.A.
Networking, IEEE/ACM Transactions on
Volume 10, Issue 1, Feb 2002 Page(s):43 - 53
Digital Object Identifier 10.1109/90.986522
Summary:We investigate how quality of service may be guaranteed to a flow
of packets in the presence of flow aggregation. For efficiency, multiple
flows, known as the constituent flows, are merged together resulting in
a single aggregate flow. After the network node where the aggregation
occurs, packet schedulers are aware of the aggregate flow, but are
unaware of its constituent flows. In spite of this, we show that quality
of service may be guaranteed to the constituent flows, provided the
aggregation is performed fairly. When the delay bound of a flow is
de-coupled from the flow's reserved rate, flow aggregation preserves the
delay bound. When the delay bound of a flow is coupled to the flow's
reserved rate, flow aggregation preserves, and in some cases improves,
the delay bound
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