Campus Event Calendar
Event Entry
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What and Who
Opportunistic Wireless Network Architectures
Rohan Narayana Murty
Harvard University
SWS Colloquium
Rohan Narayana Murty is a doctoral candidate in the Computer Science
Department at Harvard University. He received an undergraduate degree
in Computer Science from Cornell University in 2005. His research
interests span networked systems including networks, mobile computing,
and distributed systems. His thesis work has won the best paper at
SIGCOMM 2009, the Microsoft Research Graduate Fellowship, a Siebel
Scholars Fellowship, and a Jim Gray Seed Grant.
AG 1, AG 2, AG 3, AG 4, AG 5, SWS, RG1, MMCI
Expert Audience
English
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Date, Time and Location
Monday, 28 March 2011
10:30
60 Minutes
E1 5
5th floor
Saarbrücken
Abstract
With wireless networks slated to become the dominant method of
internet access of the future, the radio spectrum is fast becoming a
scarce and expensive resource. Despite the significant growing
pressures on the demand for spectrum, there are large portions of the
overall spectrum that are severely under-utilized ultimately leading
to inefficient use of available capacity. To address these problems we
build opportunistic wireless networks, which work by continually
seeking and using portions of the spectrum that are unused by the
spectrum owners (incumbents) while ensuring non-interference with the
incumbents. A prominent emerging system where opportunistic wireless
networking can work well is in the so-called white spaces. Enabled by
two historic rulings (in 2008 and 2010) by the Federal Communications
Commission (FCC) in the United States, white spaces are those
television channels that, in an instant in time, are not used by the
incumbents: television stations or wireless microphones.
In this talk I will present the challenges encountered when building
the next generation of wireless networks that operate
opportunistically over these white spaces., I will first present WhiteFi,
which consists of new algorithms and protocols for networking over the
white spaces. I will then present SenseLess, a white spaces network that
obviates the need for white space devices to sense the presence of
incumbents. I will present results and evaluations from prototype
implementations and deployments of the two systems.
Contact
Brigitta Hansen
0681 - 9325691
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Video Broadcast
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Kaiserslautern
G26
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Brigitta Hansen, 03/22/2011 14:07 -- Created document.