Friday 29th of March 2024
 

Estimation of Resources Availability in OBS Networks: A QoS-Based Approach


Amor Lazzez

Optical burst switching (OBS) technology is one of the promising solutions for the next generation Internet backbones. One of the major issues in the design of optical burst-switched networks is the estimation of the availability of network resources needed for the transmission of an input traffic while ensuring the required quality of service (QoS). A few works have addressed the availability issue in the design of OBS networks. In this paper, we present a novel scheme to estimate resources availability in an OBS network based on node architecture suitable for contention resolution and QoS provisioning. We develop a mathematical model to estimate the probability that the network or a network device is unavailable at a given point of time or during a time slot. Also, we perform a simulation study to validate the proposed scheme and give an idea about the effects of some network and traffic parameters on the availability of network resources and the provided QoS.

Keywords: OBS, QoS, Resources Availability

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ABOUT THE AUTHOR

Amor Lazzez
Amor Lazzez is currently an Assistant Professor of Computer and Information Science at Taif University, Kingdom of Saudi Arabia. He received the Engineering diploma with honors from the high school of computer sciences (ENSI), Tunisia, in June 1998, the Master degree in Telecommunication from the high school of communication (Sup’Com), Tunisia, in November 2002, and the Ph.D. degree in information and communications technologies form the high school of communication, Tunisia, in November 2007. Dr. Lazzez is a researcher at the Digital Security research unit, Sup’Com. His primary areas of research include design and analysis of architectures and protocols for optical networks.


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