By Topic

Accurate and approximate evaluations of asynchronous tunable-wavelength-converter sharing schemes in optical burst-switched networks

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Yao Mingwu ; Sch. of Commun. Eng., Xidian Univ., Xi'an, China ; Liu Zengji ; W. Aijun

The sharing of tunable wavelength converters (TWCs) is widely believed as a feasible way of reducing the cost of an optical-packet-switching (OPS) or optical-burst-switching (OBS) node. Theoretical analyses of the performance of different TWC sharing schemes in published works are mostly confined to synchronous switching nodes, and for asynchronous switching nodes, only simulation results are given. In this paper, a theoretical analysis of the performance of the TWC share-per-link (SPL) scheme for an asynchronous switching node is given with the assumptions of Poisson burst arrival and exponential burst-length distribution. Based on this analysis, the performance of a share-per-node (SPN) scheme can be evaluated by means of two approximate-evaluation models (AEMs). Quick evaluation methods for SPL and SPN schemes are also proposed. Simulation results show that the theoretical analysis is accurate and the approximate ones can get quite similar results. All results indicate that both SPL and SPN schemes will save TWCs in an OBS node, whereas SPN will save more than SPL to obtain the same burst-loss performance.

Published in:

Journal of Lightwave Technology  (Volume:23 ,  Issue: 10 )