Researchers: Nelson X. Liu, Huigang Chen, Georgios Papageorgiou, Jia-Shiang Zhou, John Baras

Synopsis: The principal objective of the research is the development of robust multi-models of network traffic of minimum complexity for network control and planning. The research program consists of three closely interrelated and coordinated thrusts: Network Traffic Models for Control and Planning; Adaptive Hierarchical Modeling Incorporating On-Line Measurements; Simulation Experimentation and Validation. More detailed description of the project can be found at: http://www.isr.umd.edu/CSHCN/research/darpa/darpa-modeling/index.html.

The research is part of the DARPA NMS project. Information about the project can be found at:
http://www.darpa.mil/ipto/research/nms/index.htm and http://www.nms-integration.org/

Faculty Researcher:

Nelson X. Liu

Dr. Nelson Liu has been with Institute for Systems Research, University of Maryland since February 2001. He worked as a post-doctorate fellow at Unversity of Cambridge, UK between Januray 2000 and February 2001. Prior to that he was a project manager in a Motorola R&D lab in Beijing. Dr. Liu has a PhD degree in computer science, and MS and BS degrees in electrical engineering. His interest includes network modeling and management, quality of services for Internet and hybrid networks, and service provisioning and distribution. Currently, he is working on scalable hybrid network dimensioning, planning, and management based on online traffic measurement, modeling, and simulations.

Full-time members:

Huigang Chen

Working on the RED Control performance in the context of TCP traffic with Long Range Dependence (LRD) characteristics, and parametric setting of the control on the requirement of robustness in response to various LRD settings. Design (sub)optimal active queueing management schemes to achieve robust performance.

George Papageorgiou

Working on cross-layer analysis and design of wireless networks, and vertical association of operations found in the lower layers of the protocol stack.

Jia-Shiang Zhou

Working on mono/multifractal behavior (self-similarity)of the Internet LAN/WAN traffic and the corresponding scheduling and buffer management problems.

Part-time members:

Nalini Bharatula, Alvaro Cardenas, Nidhi Chotani (Graduated), Karthikeyan Chandrashekar, Dinesh Dharmaraju (Graduated), Senni Perumal, Majid Raissi-Dehkordi (Researcher), Xiaoming Zhou

 

Tools: NS2 and MATLAB

Project web page: http://www.isr.umd.edu/CSHCN/research/darpa/darpa-modeling/index.html