High Performance Communication Networks Performance Communications... · High Performance Communication Networks Brian L. Mark • Broadband Switch Architectures • Handoff in Cellular

High Performance Communication Networks

Brian L. Mark

•  Broadband Switch Architectures

•  Handoff in Cellular Networks

•  Mobility Tracking in Wireless Networks

•  Security and Quality-of-Service in MANETs

•  Educational Networking Laboratory

Outline

20th Anniversary of ECE Dept. at GMU

Recent Graduate Students •  3 PhD, 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.

Current Graduate Students / Postdoc •  1 Postdoc, 2 PhD (one part-time), 1 M.S. Thesis

High-Speed Internet Backbone

Broadband Switch Architectures

N

1

2

O/E E/O Control Module

Optical Space Switch

FDL

1

2

N

Optical Burst Switch for Core Networks

Research Results: Scheduling algorithms and performance models for multi-hope edge switch and optical burst switch architectures.

Xiaomin Lu, �Modeling and Analysis of Broadband Switch Architectures,� PhD in ECE, Dec. 2002.

2n

1 2

V

1 2

V

Crossbar Switch Fabric

Routing

1

Injection channel

Ejection channel

1

2n

S 1

S Source

Multi-hop Node Architecture for Edge Networks

3G and 4G Cellular Networks

Network 1

Web Server

BS1

BS2

Internet

Network 2

Route 2

Handoff in Cellular Networks Alexe Leu, �Modeling and Analysis of Handoff Algorithms in Cellular Networks,� PhD in ECE, Nov. 2003.

BS1

BS2 BS3

BS0 BS4

BS5

r(t)

Research Results: •  Closed-form analysis of handoff probabilities for hysteresis and timer-based handoff algorithms.

•  Local averaging technique for faster handoff.

Mobility tracking in cellular networks

1,nsCoordinate adjustment

1n,o Pre-filter

1ˆn,o

KalmanFilter

Initialization

1,0s1,ˆns

Parameter Estimator

)ˆ,ˆ( (n)(n) QA

Autoregressive Mobility Model

ni1,-niin, wsAs +=

Mobility Tracking Scheme

Zainab Zaidi, �Mobility Modeling and Tracking in Wireless Networks,� PhD in ECE, Feb. 2004.

•  No infrastructure •  Mobile nodes serve as relays

Mobile Ad Hoc Networks (MANETs)

SEQUOIA Project

•  Dr. Roshan Thomas, McAfee Research

•  Dr. Kris Gaj

Co-investigators:

Graduate students: •  Marek Hejmo, PhD, �Quality-of-Service Provisioning�

•  Charikleia Zouridaki, PhD, �Security Mechanisms�

•  Stefan Velica, MS, �Secure Routing�

Research associate: •  Dr. Zainab Zaidi

•  Funded under NSF Trusted Computing Program

�SEcurity and QUality-Of-service Integration in Ad hoc wireless networks

Mobility-aware routing for MANETs

x

y

N0

N1 N2

N3

1. Distributed Mobility Tracking

2. Prediction of link availability

3. Routing based on link availability

High Trust Level High Tamper Resistance

Routing with multiple security attributes

H L

D S

A

B E

C

F

G K M

N

J Enemy Territory

Security-inclusive Routing for MANETs

Educational Networking Laboratory

Cisco 4000 Dallas

Seattle

Cisco 3000

Boston

Miami Cisco 3000

Cisco 7000

Atlanta

Washington DC

Cisco 7000

Ethernet access GMU, Fairfax

Cisco 2820 Fairfax_GMU

Asynchronous Port Connectivity

Jose Rivera, �Data Networking Laboratory,� MS Project, 2001

An Early Version…