Optical hybrid switching - Combined optical burst switching and optical circuit switching

Abstract

In this paper, we propose a new optical hybrid switching technique which combined Optical Burst Switching (OBS) and Optical Circuit Switching (OCS) using flow classification. In particular, this switching technique classifies incoming IP traffic flows into short-lived and long-lived flows for Quality of Service (QoS) provisioning according to traffic characteristics. The aim is to maximize network utilization while satisfying user's QoS requirements. We model the system as a single server queue in a Markovian environment. The burst generation process is assumed to follow a two-state Markov Modulated Poisson Process (MMPP), and the service rate fluctuates based on the number of concurrent OCS sessions. Results for the delay and OBS burst assembly time are derived. © Springer-Verlag Berlin Heidelberg 2004.