Title :
Online impairments-aware routing within a path computation element
Author :
Fernando Solano;Mateusz Żotkiewicz;Michał Pióro
Author_Institution :
Warsaw University of Technology, Nowowiejska 15/19, 00-665, Poland
Abstract :
A Path Computation Element (PCE) is a computing device in a network capable of calculating paths. Once a PCE receives a path computation request, the PCE is suppose to provide a response within a reasonable short time. However, computing a feasible path is not a straightforward task, since the computational problem must consider several constraints in a short time. In this paper we propose an algorithm for light-paths computation for this purpose that is intended to comply with the PCE standard. Our algorithm considers optical impairments, wavelength conversion and nodes with limited switching capabilities. Optical impairments are estimated using a Q-factor. The routing problem is solved using Multi-Constrained Shortest Path exact algorithm.
Keywords :
"Routing","Optical wavelength conversion","Optical fiber networks","Computer networks","Algorithm design and analysis","Protocols","Phase change materials","Telecommunication computing","Quality of service","Optical control"
Conference_Titel :
Signals, Systems and Computers, 2009 Conference Record of the Forty-Third Asilomar Conference on
Print_ISBN :
978-1-4244-5825-7
Electronic_ISBN :
1058-6393
DOI :
10.1109/ACSSC.2009.5470051
