(On-going)
White Space Networking (2003-): Along with a small team, built and
deployed the world's first White Space Networking (October 16, 2009). Authored Microsoft's
proposal for spectrum etiquette (2003). Published papers, started conferences & workshops,
gave keynotes and plenaries, developed prototypes etc. With the historic Nov. 4, 2008 FCC
ruling that has opened up 180 MHz+ of spectrum for unlicensed devices, white space
networking is poised to becoming bigger than the Wi-Fi revolution.
(On-going)
Enterprise Network Management (2005-): Took a unique approach to
the management of networked applications and services in large enterprises. The approach requires
end-hosts to cooperatively detect, diagnose, and recover from network performance problems. Unlike
existing products, end-hosts gather, aggregate, and analyzing data at all layers of the
networking stack to determine the root cause of the problems impacting applications
and services. The work includes several projects in the wireless and wired network management.
Built the world's first multi-radio single network system (2003) Introduced
important new design ideas on using multiple radios to improve the performance
of wireless mesh networks, wireless LANs, and cell phones. These designs have
proliferated deeply into the computer and telecommunication industry. Awarded
multiple patents and received considerable coverage from mainstream media
for this work.
Built the world’s first wireless network virtualization architecture (2002):
this architecture enables a network card to connect to multiple networks simultaneously.
Software downloads exceeded over 100,000 making it the
second most popular download
in Microsoft Research’s history (up until 2007). It is being shipped to millions of users via Windows 7. Received many accolades
from main stream media. The design is fundamental to NSF’s GENI WLAN virtualization
efforts.
Built and deployed the world’s first public Wi-Fi hotspot network (2000).
Deployed the network in Bellevue, Washington from 1999 to 2001 (New York Times Article, Feb. 28, 2000).
The wireless edge server design is being used by all the major Wi-Fi equipment vendors,
beating out the competing IEEE 801.1x design. Awarded 5 international patents and
considerable favorable press coverage. (Click
here to check out the original web site, June 1999)
Built and deployed the world's first Wi-Fi based indoor location determination
system (1999). Original paper has been cited over 2300 times and in large part has
created the field of indoor positioning systems using commodity hardware. Several companies
including Ekahau, Symbol, Nortel, Intel, Cisco, and Microsoft have commercialized versions of
this system and many universities are using it as a foundation for research in
location and context aware systems. Awarded 9 U.S. and international patents for this work.
(Click
here to see original demo, April 2000)
Built the world’s first commodity multimedia hardware adapter for PCs (1992).
The hardware had real-time audio-video coding/decoding and image rendering capabilities.
It was used world-wide for research in high-speed (ATM, FDDI) and packet video networks
(Sequoia 2000, BERKOM, BAGnet & MBONE)
Provided visionary leadership in community mesh networking (2003), Popularized
this networking paradigm as an alternative technology for broadband access in cities, neighborhoods,
offices, and rural areas. Helped create the Digital Inclusion Program that provided $1.5 million
in research funding. Developed the Academic Resource Kit 2005 & 2007 for teaching & research. The
kit is being used by over 1200 Universities world-wide. Gave keynotes and taught several
courses. Published multiple papers, awarded 8 international patents, received wide press
coverage, and licensed out the technology to start-up companies.
Contributed to multiple wireless networking standards: The IEEE 802.11e
standard incorporates ideas from the distributed weighted fair scheduling algorithm that we
invented. The IEEE 802.11s mesh standard incorporates abstractions related to multiple radios
and fast channel switching. The Bluetooth SIG's Local Positioning WG incorporated the signal
strength matching techniques that we invented. The NativeWiFi and Wireless Zero Configuration
in the Windows are derivatives my work.
Active Research Projects
KNOWS, Kogntive Networking Over White Spaces (2003-present)
HAWAII, Cloud Assisted Mobile Web Services &
MAUI, Stretching the Cloud for SmartPhones (2009-present)
The 7th IEEE/IFIP International Conference on Embedded and Ubiquitous Computing (EUC 2009),
August 31 (Vancouver, Canada)
The Sixth International Conference on Wireless On-demand Network Systems and Services,
February 2, 2009 (Snowbird, Utah, USA)
First Workshop on Wireless Broadband Access for Communities and Rural Developing Regions,
December 11, 2008 (Karlstad, Sweden)
Second IFIP International Symposium on Wireless Communications and Information Technology in Developing
Countries, October 7, 2008 (Pretoria, South Africa)
MSR’s Cognitive Wireless Networking Summit, June 4, 2008 (Snoqualmie, Washington, USA)
First International Workshop on Cognitive Dynamic Systems and Their Applications 2008,
May 27, 2008 (Ontario, Canada)
Intel's Communications Internal Conference (ICOMM 2008),
April 9, 2008 (Stevenson, Washington, USA)
The Third International Conference on Communication System Software and Middleware
(COMSWARE 2008), January 8, 2008 (Bangalore, India)
The Ninth International Conference on Distributed Computing and Networking
(ICDCN), January 6, 2008 (Kokatta, India)
IFIP Symposium on Computer Performance Modeling, Measurements, and Evaluation
(PERFORMANCE), October 2, 2007 (Cologne, Germany)
ACM Workshop on Mobility in Evolving Internet Architecture (MobiArch),
August 27, 2007 (Kyoto, Japan)
Conference on Heterogeneous Networking for Quality, Reliability, Security and
Robustness (QShine),
August 15, 2007 (Vancouver, Canada)
IEEE International Symposium on Wireless Pervasive Computing, February 5, 2007,(San Juan, Puerto Rico)
SPIE Broadband Access Communication Technologies Conference, October 1, 2006, (Boston, Massachusetts, USA)
First International Workshop on "Wireless Mesh: Moving towards Applications",
August 10, 2006 (Waterloo, Ontario, Canada)
Workshop on Wireless Personal and Local Area Networks, January 8, 2006 (New Delhi, India)
Texas Wireless Symposium, October 26-28, 2005 (Austin, Texas)
International Symposium on Wireless Communication Systems (ISWCS), September 5-7, 2005 (Siena, Italy)
International Conference on Mobile Business (ICMB), July 11-13, 2005 (Sidney, Australia)
MICS Workshop ETH Zurich, July 6-7, 2004 (Zurich, Switzerland)
Reactions and Perspectives,
National Science Foundation Workshop on Future Wireless Communication Networks,
Arlington, VA (Nov. 2-3, 2009)
Broadband Spectrum: A Looming Crisis?,
Federal Communications Commission's National Broadband Plan Field Hearing on Mobile Broadband,
San Diego, CA (Oct. 8, 2009)
The Future of Information Systems and Communications, Centennial Forum,
100th Anniversary of Electrical and Computer Engineering Department,
University of Maryland, Baltimore, MD (Sep. 27, 2008)
Exchanges and Trends in Networking, sponsored by European Cooperation
in Science and Technology (EU) and the National Science Foundation (USA),
Chania, Greece (Jun. 23, 2003)
You can download my tutorial on mesh networking. The
power point file is 26,460 KBytes and the PDF version is 4,829 KBytes. I would love to know if you used any portion of this tutorial in your talks or presentation and all comments are welcome.
