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PRESENTATIONS

What:	The 2nd IASTED International Conference on Communications, Internet, & Information Technology (CIIT)
Where:	Scottsdale, Arizona
When:	November 17 - 19, 2003
Title:	Fault-Tolerant Reconfigurable Ethernet-Based IP Network Proxy (presentation slides - 582KB)
Who:	Jan Baranski, Research Associate Telecommunication and Information Technology Laboratory Department of Electrical and Computer Engineering Mississippi State University
Abstract: Using commonly available hardware and software, we present a proxy scheme for IP over Ethernet networks that provides a fault-tolerant solution without the need for modification of existing networking equipment. This type of fault-tolerant reconfigurable Ethernet-based proxy (FREP) is transparent to current applications and provides full redundancy with minimal packet loss and fast reconfiguration times. A prototype implementation yielded a reconfiguration time of 1.55 sec. Routing delays from the OSPF dynamic routing protocol, however, increased the apparent interruption of service to an average of 10.2 sec when tested in a three-subnet/three-router testbed network. An almost instantaneous recovery time of < 0.02 sec was observed in all cases. The proposed proxy scheme can be deployed in any network based on a topology that allows two connections between a subnet and the backbone. The solution relies on a dynamic routing protocol to provide backbone-level routing around the malfunctioning inter-network link.

What:	The 2nd IASTED International Conference on Communications, Internet, & Information Technology (CIIT)
Where:	Scottsdale, Arizona
When:	November 17 - 19, 2003
Title:	Proportional Bandwidth, Delay, and Loss Differentiation (presentation slides - 572KB)
Who:	Manimaran Selvaraj Telecommunication and Information Technology Laboratory Department of Electrical and Computer Engineering Mississippi State University
Abstract: Proportional Differentiated Services can be provisioned in terms of bandwidth, delay, or packet loss. Several studies contributed schedulers and packet droppers that achieved proportional bandwidth, delay, or loss differentiation. However, all these schemes differentiated in terms of only one of the three metrics. A simple, unified, scalable, and robust scheme to simultaneously control all three metrics was felt important. By controlling just delay and packet loss, proportional differentiation can be achieved in terms of all three metrics. A robust adaptive scheduler for proportional delay differentiation services is presented. Proportional services are further policed by a class based packet dropper. The combination of the adaptive scheduler and the packet dropper treats different traffic classes proportionally in terms of all three metrics. Simulation experiments show that regardless of the network traffic characteristics, our scheme can effectively differentiate services in terms of bandwidth, delay, and loss simultaneously.
What:	Graduate Student Seminar Series
Where:	Simrall Conference Room (216 Simrall)
When:	3 PM, Friday, April 11, 2003
Title:	Wireless Ad Hoc Networks (presentation slides - 504KB)
Who:	Subramanian Parameswaran, M.S. Candidate, Electrical Engineering Telecommunication and Information Technology Laboratory Department of Electrical and Computer Engineering Mississippi State University
Abstract: Wireless Communication between mobile users is becoming more popular each day. The recent advance in technology in the form of wireless data communication devices, such as wireless modems/LANs has contributed to the growing popularity of Wireless Communication. There are two distinct approaches for enabling Wireless communication between two hosts. One method is to use the conventional cellular infrastructure and the second is to use Ad Hoc Networks. An ad hoc network is a collection of wireless mobile nodes, dynamically formed without the use of any physical infrastructure or centralized administration. The nodes use a wireless interface to send packet data. They find application in tactical military networks, sensor networks, disaster relief networks etc., where the deployment of a network needs to be done without any infrastructure. This presentation discusses the concept of wireless ad hoc networks and the current research issues, with an emphasis on the routing process.
What:	Graduate Student Seminar Series
Where:	Simrall Conference Room (216 Simrall)
When:	3 PM, Friday, October 4, 2002
Title:	A Survey on Wireless Sensor Networks (presentation slides - 353KB)
Who:	Jing Li, M.S. Candidate, Electrical Engineering Telecommunication and Information Technology Laboratory Department of Electrical and Computer Engineering Mississippi State University
Abstract: A Wireless Sensor Network (WSN) provides a low-cost and multifunctional means to link communications and computer networks to the physical world. It can be applied in different fields, especially in many emergent and human-inaccessible scenarios, such as battlefield surveillance, seismic detection, ocean monitoring, and biomedical application.  The low-energy, high fidelity and dynamic operation characteristics of WSNs pose great design challenges for researchers. This presentation gives an overview of the current research state and outlines the open design issues for wireless sensor networks.

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