Modeling and blocking probability evaluation for multi-priority circuit switched optical networks

Speaker : Moshe Zukerman
City University of Hong Kong
Date: 30/06/2011
Time: 2:00 pm - 3:00 pm
Location: LINCS Meeting Room 40


It is expected that circuit switching (CS) will play an important major role in future optical networks. CS normally does not require buffering which is very costly in the optical domain. If the traffic on a CS network is well managed CS networks can guarantee quality of service (QoS) to customers in a way that can even lead to efficient link utilization and low consumption of energy per bit. In the core Internet, where traffic is heavily multiplexed, it is easier to achieve high utilization and therefore the role of CS at the core is clearly important. However, CS can also lead to a green and efficient operation end-to-end for large bursts of data. Accurate, robust and scalable blocking probability evaluation is an important element in CS traffic management. We consider an optical network that uses various circuit-switching based technologies such as OCS and OFS. We model it as two-priority circuit-switched network with non-hierarchical alternate routing. We evaluate the blocking probability using algorithms based on the Erlang Fixed-point Approximation (EFPA) and the Overflow Priority Classification Approximation (OPCA). For a particular example of a 6-node fully meshed network with alternate routing, we compare numerically between OPCA over EFPA and discuss traffic implications.

Biography: Moshe Zukerman received his B.Sc. in Industrial Engineering and Management and his M.Sc. in Operation Research from Technion-Israel Institute of Technology and a Ph.D. degree in Engineering from The University of California Los Angeles in 1985.During 1986-1997 he served in Telstra Research Laboratories (TRL). During 1997-2008 he was with The University of Melbourne. In Dec 2008,he joined City University of Hong Kong where he is a Chair Professor of Information Engineering. He has served on the editorial boards of various journals such as IEEE JSAC, IEEE/ACM Transactions on Networking, IEEE Communications Magazine, Computer Networks and Computer Communications. Prof. Zukerman has over 300 publications in scientific journals and conference proceedings, has been awarded several national and international patents, two conference best paper awards and honorary Professorships at CCNU, Wuhan. CityU, Hong Kong and BJTU, Beijing. He is a Fellow of the IEEE and has served as a member and Chair of the IEEE Koji Kobayashi Computers and Communications Award Committee.