Abstract
How serious is spectrum fragmentation in an elastic optical network?
It is addressed by the tremendous provisioning gain achieved by eliminating
a particular kind of fragmentation, namely, one that could be removed by Hitless Optical Path Shift (HOPS), a non-disruptive
defragmentation technology. We devised a series of HOPS-based defragmentation
algorithms, ranging from proactive to reactive strategies. Analysis and simulation
results show that for typical backbone networks operated with a light load,
using our optimal reactive defragmentation scheme, 98% of the requested spectrum
bandwidth, that is otherwise blocked, can be provisioned. Moreover, the corresponding
defragmentation costs (in terms of impact on existing connections, and defragmentation
delay) are kept at minimum.
© 2013 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription