Abstract
In this paper, we present a wavelength division multiplexing multiring
metropolitan area network architecture using a separate ring as control channel
and a finite number of access nodes. Each access node is equipped with a fixed
tuned transmitter and a fixed tuned receiver to exchange control information
over the control wavelength. Also, each access node has a tunable transmitter
to efficiently exploit all data wavelengths for data transmission. The set
of data wavelengths is divided into wavelength bands. This allows a flexible
node design with a number of parallel tunable receivers per node, each operating
in a specific wavelength band and providing limited tuning time. On the one
hand, our network strategy confronts more efficiently the scalability and
maintenance problems comparatively with most of the access ring protocols.
On the other hand, the proposed access algorithm avoids both the data wavelengths
and the receiver collisions, improving even more the network utilization.
An analytic model is developed for the performance measures evaluation. Also,
we develop another analysis approach using discrete event simulation model
based on self-similar statistics. Analysis is accomplished studying various
numbers of access nodes, data wavelengths, and buffer size.
© 2008 IEEE
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