Performance evaluation of slotted optical burst switching systems with quality of service differentiation

Date
2009
Authors
Ozturk, O.
Karasan, E.
Akar, N.
Advisor
Instructor
Source Title
Journal of Lightwave Technology
Print ISSN
0733-8724
Electronic ISSN
1558-2213
Publisher
Institute of Electrical and Electronics Engineers
Volume
27
Issue
14
Pages
2621 - 2633
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Abstract

Slotted optical burst switching (SOBS) has recently caught the attention of the optical networking community due to performance gains achievable with synchronous infrastructures. In this paper, we study the loss probabilities in a slotted optical burst switching node fed with Poisson burst traffic where the fixed burst size is an integer multiple of the slot length. We develop a discrete-time Markov chain (DTMC) based framework to obtain the loss probabilities in systems with and without quality of service (QoS) differentiation. In particular, we focus on analytical modeling of priority scheduling and offset-based QoS differentiation mechanisms for SOBS networks. The latter problem suffers from the curse of dimensionality which we address by a discrete phase type distribution approximation for the discrete Poisson distribution leading to an accurate approximation for the loss probabilities. A hybrid QoS mechanism which jointly utilizes offset-based differentiation together with priority scheduling is also analyzed. © 2009 IEEE.

Course
Other identifiers
Book Title
Keywords
Discrete phase type distribution, Offset-based differentiation, Priority scheduling, QoS, Synchronous optical burst switching
Citation
Published Version (Please cite this version)