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High Performance Communication Networks

High Performance Communication Networks. Brian L. Mark. 20 th Anniversary of ECE Dept. at GMU. Outline. Broadband Switch Architectures Handoff in Cellular Networks Mobility Tracking in Wireless Networks Security and Quality-of-Service in MANETs Educational Networking Laboratory.

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High Performance Communication Networks

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  1. High Performance Communication Networks Brian L. Mark 20th Anniversary of ECE Dept. at GMU Outline • Broadband Switch Architectures • Handoff in Cellular Networks • Mobility Tracking in Wireless Networks • Security and Quality-of-Service in MANETs • Educational Networking Laboratory

  2. Recent Graduate Students • 3 PhD, 1 M.S. Thesis Current Graduate Students / Postdoc • 1 Postdoc, 2 PhD (one part-time), 1 M.S. Thesis External Research Funding • TRW Foundation, “Resource Management and Traffic Control for Wireless Networks,” 2001-2004. • NSF Early Faculty Career Award, “Design, Modeling, and Control of High Performance Communication Networks,” 2002-2007. • NSF-funded “SEQUOIA” project, “Integrating security and quality-of-service in routing and mobility management for ad hoc networks,” 2002-2005.

  3. High-Speed Internet Backbone Edge Network Edge Network Core Network Edge Network Edge Network

  4. Broadband Switch Architectures 1 1 1 2 1 1 Crossbar Switch Fabric Optical Space Switch V 2 2 1 Routing 2n 2 2n N N V FDL Control Module O/E E/O 1 Source S Ejection channel Injection channel S Xiaomin Lu, “Modeling and Analysis of Broadband Switch Architectures,” PhD in ECE, Dec. 2002. Multi-hop Node Architecturefor Edge Networks Optical Burst Switchfor Core Networks Research Results: Scheduling algorithms and performance models for multi-hope edge switch and optical burst switch architectures.

  5. 3G and 4G Cellular Networks Internet Web Server Route 1 Network 1 BS1 Route 2 BS2 Network 2

  6. Handoff in Cellular Networks BS2 BS3 BS5 r(t) BS0 BS1 BS4 Alexe Leu, “Modeling and Analysis of Handoff Algorithms in Cellular Networks,” PhD in ECE, Nov. 2003. • Research Results: • Closed-form analysis of handoff probabilities for hysteresis and timer-based handoff algorithms. • Local averaging technique for faster handoff.

  7. Mobility tracking in cellular networks Coordinate adjustment Zainab Zaidi, “Mobility Modeling and Tracking in Wireless Networks,” PhD in ECE, Feb. 2004. Autoregressive Mobility Model Mobility Tracking Scheme Parameter Estimator Pre-filter Initialization KalmanFilter

  8. Mobile Ad Hoc Networks (MANETs) • No infrastructure • Mobile nodes serve as relays

  9. SEQUOIA Project “SEcurity and QUality-Of-service Integration in Ad hoc wireless networks • Funded under NSF Trusted Computing Program Co-investigators: • Dr. Roshan Thomas, McAfee Research • Dr. Kris Gaj Research associate: • Dr. Zainab Zaidi Graduate students: • Marek Hejmo, PhD, “Quality-of-Service Provisioning” • Charikleia Zouridaki, PhD, “Security Mechanisms” • Stefan Velica, MS, “Secure Routing”

  10. Mobility-aware routing for MANETs N1 N2 y N0 N3 x 1. Distributed Mobility Tracking 2. Prediction of link availability 3. Routing based on link availability

  11. Security-inclusive Routing for MANETs High Trust Level High Tamper Resistance Enemy Territory A J F M K G S C D B E L H N Routing with multiple security attributes

  12. Educational Networking Laboratory Jose Rivera, “Data Networking Laboratory,” MS Project, 2001 An Early Version… Asynchronous Port Connectivity Ethernet access GMU, Fairfax Dallas Cisco 4000 Cisco 7000 Seattle Fairfax_GMU Atlanta Cisco 2820 Boston Cisco 7000 Cisco 3000 Miami Cisco 3000 Washington DC

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