Affiliation:
1. The George Washington University
2. San Jose State University
Abstract
Service provisioning can be enhanced with spectrally spatially flexible
optical networks (SS-FONs) with multicore fibers; however, intercore
crosstalk (XT) is a dominant impairment that complicates the problem
of maintaining the quality of transmission (QoT) and resource
allocation. The selection of modulation formats (MFs), due to their
unique XT sensitivities, further increases the complexity. The
routing, modulation, core, and spectrum assignment (RMCSA) problem
must select the resources carefully to exploit the available capacity
while meeting the desired QoT. In this paper, we propose an RMCSA
algorithm called the tridental resource assignment (TRA) algorithm for
transparent SS-FONs, and its variant, translucency-aware TRA (TaTRA),
for translucent SS-FONs. TRA balances three different factors that
affect network performance under dynamic resource allocation. We
consider translucent networks with flexible regeneration and with and
without modulation and spectrum conversion. Our resource assignment
approach includes both an offline network planning component to
calculate path priorities and an online/dynamic provisioning component
to allocate resources. Extensive simulation experiments performed in
realistic network scenarios indicate that TRA and TaTRA significantly
reduce the bandwidth blocking probability by several orders of
magnitude in some cases.
Funder
National Science Foundation
Subject
Computer Networks and Communications
Cited by
9 articles.
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