Title :
A Comparison of Elastic and Mixed Line Rate Optical Slot Switching WDM Metro Rings
Author :
Pointurier, Yvan ; Uscumlic, Bogdan ; Cerutti, I. ; Antona, Jean-Christophe
Author_Institution :
Bell Labs., Alcatel-Lucent, Nozay, France
Abstract :
We propose optimal resource allocation techniques for two kinds of optical slot switching metro rings: 1) fixed mixed line rate (fMLR), where the rate of each transponder (TRX) is fixed and set at network planning time; and 2) elastic TRX, where the rate may adjust dynamically on a per-slot basis during network operation. We then numerically compare the cost (CAPEX or energy) of fMLR and elastic networks, and investigate the suitability of each of the two considered network technologies for several ring topologies, TRX cost models, and traffic distributions and loads.
Keywords :
metropolitan area networks; numerical analysis; optical communication equipment; optical switches; resource allocation; switching networks; telecommunication network topology; telecommunication traffic; transponders; wavelength division multiplexing; CAPEX; TRX cost models; elastic TRX; elastic line rate optical slot switching WDM metro rings; fMLR; fixed mixed line rate; mixed line rate optical slot switching WDM metro rings; network operation; network planning time; network technologies; numerical analysis; optimal resource allocation; ring topologies; traffic distributions; traffic loads; transponder; Optical packet switching; network planning;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2266151
