Coping with Uncertainties in Large-Scale Distributed Systems

PhD Thesis Proposal Defence


Title: "Coping with Uncertainties in Large-Scale Distributed Systems"

by

Mr. Yuan HE


Abstract:

Large-scale distributed system, such as peer-to-peer networks and wireless 
sensor networks, support a wide variety of popular applications nowadays. 
Being distributed and self-organized, those systems are inevitably 
affected by various uncertainties, resulting in limited applicability, 
reliability, and efficiency. This proposal mainly addresses three key 
issues that emerge from real applications, namely critical node detection 
that ensures the system's topological reliability against uncertain 
connectivity, VCR-oriented design of peer-to-peer video-on-demand against 
uncertain user behaviors, and range-free localization for networked sensor 
nodes against irregular wireless signal strengths. I develop theoretical 
principles and practical approaches to address the above issues. Through 
extensive real-world implementations and trace-driven simulations, I 
evaluate those approaches and the results demonstrate satisfactory 
effectiveness and efficiency. As the future work towards my dissertation, 
this proposal also includes the research plan concerning two issues. Based 
on measurements and observations on a long-term and large-scale sensor 
network system, GreenOrbs, I will conduct study on error-resilient 
localization against uncertain ranging errors and self-adapted routing 
against uncertain network dynamics.


Date:  			Thursday, 25 February 2010

Time:           	1:00pm - 3:00pm

Venue:          	Room 4472
			lifts 25/26

Committee Members:      Dr. Yunhao Liu (Supervisor)
			Dr. Ke Yi (Chairperson)
			Dr. Lei Chen 
			Dr. Lin Gu


**** ALL are Welcome ****