NC State University

Department of Computer Science Colloquia 2001-2002

Date:   Friday, February 22, 2002
Time:   3:30 PM (talk)
Place:   402A Withers, NCSU Historical Campus (click for courtesy parking request)

Speaker:  Eylem Ekici , School of Elec. & Comp. Eng., Georgia Institute of Technology

Routing in Next Generation Terrestrial/Satellite IP Networks

Abstract:   Satellite networks provide global coverage, are capable of consistently sustaining high bandwidth levels and support flexible and scalable network configurations. They are also envisioned as an integral part of the Next Generation Internet, where satellites carry IP-switches that forward packets independently. The end-to-end routing in Next Generation Terrestrial/Satellite IP Networks is a challenging problem because of the dynamic nature of the satellite network topology and the compatibility constraints regarding the existing terrestrial Internet.

In this talk, an efficient solution to the end-to-end routing problem is presented, where the routing inside the satellite network and the routing across the Autonomous Systems is examined separately. As a solution to the routing problem inside the satellite network, the Multi-Layered Satellite Routing Algorithm (MLSR) is introduced. The MLSR algorithm efficiently calculates shortest delay paths between the satellites in the satellite network and the gateways on the Earth based on the link delay measurements. In order to enable seamless integration of terrestrial and satellite IP networks in the Network Layer, the BGP-S protocol is introduced, which is fully compatible with the BGP-4 protocol used in the Internet. The end-to-end routing objective can be achieved through the collective use of these two schemes.

Short Bio:   Eylem Ekici received his BS and MS degrees in computer engineering from Bogazici University in 1997 and 1998, respectively. Currently, he is enrolled in the PhD program of the School of Electrical and Computer Engineering, Georgia Institute of Technology, working on a dissertation under the direction of Prof. Ian F. Akyildiz in the Broadband and Wireless Networking Laboratory. The title of his dissertation is "Routing and Multicasting in Satellite IP Networks." His research interests include satellite networks, wireless networks, routing protocols, and Internet.

Host:   H. Perros and  G. Rouskas,  Computer Science, NCSU

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