Routing of Multicast Audio/Video Streams in Reconfigurable WDM
Ciro A. Noronha
Optivision, Inc.
3450 Hillview Ave.
Palo Alto, CA 94304
Email: ciro_AT_optivision.com
Fouad A. Tobagi
Stanford University
Electrical Engineering Dept.
Gates Bldg 3a-339
Stanford, CA 94305
Email: tobagi_AT_bodega.stanford.edu
Abstract
Due to its low attenuation, fiber has become the medium of choice
for point-to-point links. Using Wavelength-Division Multiplexing
(WDM), many independent channels can be created in the same fiber. A
network node equipped with a tunable optical transmitter can select
any of these channels for sending data. An optical interconnection
combines the signal from the various transmitters in the network, and
makes it available to the optical receivers, which may also be
tunable. By properly tuning transmitters and/or receivers,
point-to-point links can be dynamically created and destroyed.
Therefore, in a WDM network, the routing algorithm has an additional
degree of freedom compared to traditional networks: it can modify the
network topology to create the routes. In this paper, we consider the
problem of routing multicast audio/video streams in WDM networks and
propose heuristic algorithms to solve it. The performance of these
heuristics is evaluated in a number of scenarios, with a realistic
traffic model, and from the evaluation we derive guidelines for usage
of the proposed algorithms.
Keywords: WDM, multicast, optical networks, routing
JNSM: Vol. 4, No. 2, 1996
Routing of Multicast Audio/Video Streams in Reconfigurable WDM [Vol. 4, No. 2, 1996]
NOTE: only abstract of paper available on-line
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