Abstract
Wavelength conversion is an efficient way to improve the optical packet
blocking performance for all-optical packet switching networks. The
synchronous OPS node architecture, with a hybrid shared wavelength
conversion (HSWC) scheme based on shared per output fiber and shared per
node wavelength conversion, is put forward to reduce the packet loss
probability in this paper. A heuristics is developed into assigning the
wavelength channels for packets in the proposed optical nodes. The limited
range wavelength converters first available (LFA) algorithm and parametric
wavelength converters first available (PFA) algorithm are used to schedule
contending optical packets to available wavelength channels. Simulation
results show that the hybrid shared wavelength conversion scheme has
significant performance improvement in terms of packet loss probability. And
the utilization of wavelength converter is greatly improved for OPS node
with hybrid shared wavelength conversion scheme. Furthermore, the PFA
scheduling algorithm compared with LFA algorithm is validated to improve the
wavelength assignment efficiency and reduce the required total wavelength
converters for OPS nodes.
© 2011 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