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Viewing report
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Available Bandwith Estimation. Edition No. 1
VDM Publishing House, Nov 2008, Pages: 64
In this book, available bandwidth estimation tools
including Delphi, Spruce, and Pathload are
evaluated. Among all, Pathload is the most reliable
tool that considers the IC/CS phenomenon. Pathload
sends multiple trains called fleets. After each
fleet is sent, statistical evaluation of the inter-
packet time gaps at the destination compared to the
inter-packet time gaps at the sender determines
whether the trend of the inter-packet time gaps in
that fleet has been increasing, non-increasing, or
undeterminable. The transmission rate for the next
fleet is adjusted based on the trend of the current
fleet until the results converge. One challenge of
Pathload is that the underlying one way delay
detection and the method of handling IC/CS effect is
far from perfect. In this book, the previously
proposed algorithm for efficient OWD trend detection
based on a statistical method is implemented into
the Pathload. Then, the enhanced Pathload is
compared to Pathload.
Experiments in our laboratory network and across
several Internet paths clearly show that our
enhanced Pathload significantly outperforms tests
using Pathload with its original OWD trend detection
algorithm.
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