IP over WDM 網路中具服務品質保證及群播技術之研究(1/2)
Date Issued
2004-07-31
Date
2004-07-31
Author(s)
DOI
922213E002064
Abstract
In this project, we formulate an optimization
problem for the design of light-tree based
logical topology in Wavelength Division
Multiplexing (WDM) networks. The problem
is comprised of two parts: (1) multicast
routing and wavelength assignment of lighttrees,
and (2) the design of light-tree based
logical topology for multicast streams. In the
first part, we use Mixed Integer Linear
Programming (MILP) to solve the optimal
routing and wavelength assignment problem
of light-trees with an end-to-end delay bound,
and obtain the optimal placement of power
splitters and wavelength converters. The
numerical results show that networks with
just a few power splitters and wavelength
converters can efficiently carry multicast data.
In the second part, we extend the above
formulation to design the logical topology
based on light-trees for multicast streams. In
our approach, a light-tree can carry data of
multiple multicast streams, and data of a
multicast stream may traverse multiple lighttrees
to reach a receiver. The numerical
results show that our approach use network
resources more efficiently, as compared to
the approach with a separate light-tree for a
multicast stream and to the approach of
transporting multicast streams over logical
networks.
Subjects
Mixed Integer linear
programming (MILP)
programming (MILP)
WDM
multicas
light
tree
tree
logical topology
Publisher
臺北市：國立臺灣大學電機工程學系暨研究所
Type
report
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