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Information Technology

Networking

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Displaying 551 - 575 of 833

Rate Adaptive Video Transmission Over Ad-Hoc Networks

September 1, 2004
Author(s)
Hamid Gharavi, K Ban
In mobile ad-hoc network environments where the network topology is expected to change considerably, providing reliable video communications is a challenging task. This paper is mainly concerned with developing a packet control mechanism to reduce bursts

Micro-Time-Scale Network Measurements and Harmonic Effects

April 28, 2004
Author(s)
Mark E. Carson, Darrin J. Santay
As network transmission speeds increase, packet streams increasingly uncover fine details of the interior behavior of router hardware and software. This behavior reveals itself as a set of harmonic effects, as interior clocks periodically interrupt packet

A Cross-Correlation Based Method for Spatial-Temporal Traffic Analysis

March 10, 2004
Author(s)
Kevin L. Mills, J Yuan
Analyzing spatial-temporal characteristics of traffic in large-scale networks requires both suitable analysis method and a means to reduce the amount of data that must be collected. Of particular interest would be techniques that reduce the amount of data

Segmentation for Robust Tracking in the Presence of Severe Occlusion

February 18, 2004
Author(s)
Camillo A. Gentile, M Sznaier, O Camps
Tracking an object in a sequence of images can fail due to partial occlusion or clutter. Robustness to occlusion can be increased by tracking the object as a set of parts such that not all of these are occluded at the same time. However, successful

Network Security Testing

November 1, 2003
Author(s)
Shirley M. Radack
This ITL Bulletin summarizes NIST Special Publication 800-42, Guideline on Network Security Testing, by John Wack, Miles Tracy, and Murugiah Souppaya, which assists organizations in testing their Internet-connected and operational systems. The guide

Understanding Self-Healing in Service-Discovery Systems

November 1, 2003
Author(s)
Christopher E. Dabrowski, Kevin L. Mills
Service-discovery systems aim to provide consistent views of distributed components under varying network conditions. To achieve this aim, designers rely upon a variety of self-healing strategies, including: architecture and topology, failure-detection and

Backup Resource Pooling in (M : N) n Fault Recovery Schemes in GMPLS Optical Networks

October 1, 2003
Author(s)
Kotikalapudi Sriram, David W. Griffith, San-Nan K. Lee, Nada T. Golmie
In resilient optical networks, there is a tradeoff between the amount of resources allocated for protection versus the probability that a failed working path cannot be covered, known as protection blocking probability. Often the network topology permits

A Link-Level Simulator of the CDMA2000 Reverse-Link Layer

August 1, 2003
Author(s)
Hamid Gharavi, R Wyatt-Millington, F Chin, K Ban
This paper presents the design and implementation of a simulation model for the cdma2000 reverse link. The model includes all the radio configurations and their corresponding data rates in accordance with the IS-2000 specifications. The paper first
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