Title :
Improvements on performance of photonic packet switching nodes by priority assignment and buffer sharing
Author :
Ribeiro, Moises R N ; O´Mahony, M.J.
Author_Institution :
Dept. of Electron. Syst. Eng., Essex Univ., Colchester, UK
Abstract :
Photonic packet switching faces a major challenge in providing low packet loss probability under the constraint of shallow optical buffers depth. Although improvements have been found by exploiting the wavelength domain through the use of WDM and wavelength conversion, performance enhancement by assigning priority to packets have yet to be investigated. This paper describes analytical models for the performance of photonic switching nodes under uncorrelated traffic dealing with packets having two different priorities. Nodes with and without optical buffers are considered. Buffer sharing among packets with different priorities backed by an early-discard mechanism is studied. Simple management methodologies are proposed for optimizing resources usage
Keywords :
buffer storage; optical wavelength conversion; packet switching; photonic switching systems; probability; telecommunication network management; telecommunication traffic; wavelength division multiplexing; WDM; analytical models; buffer sharing; early-discard mechanism; low packet loss probability; management methodologies; optical buffers; optical transport network management; performance; photonic packet switching nodes; priority assignment; resource usage optimisation; shallow optical buffers depth; uncorrelated traffic; wavelength conversion; wavelength domain; Analytical models; Optical buffering; Optical losses; Optical packet switching; Optical wavelength conversion; Optimization methods; Packet switching; Resource management; Traffic control; Wavelength division multiplexing;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853791
