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Professor:
Maria Papadopouli.
Description:
Investigate mobile computing research. Class
web-page
Conserving power and securing
ad hoc wireless networks by enhancing the 802.11 wireless protocol.
We are designing enhancements to the 802.11 protocol in order to improve
power consumption and security. Our protocol design is still underway and
we are pursuing three different approaches, which might be incorporated
into one solution. We have developed experimental and simulation testbeds
to evaluate our protocol. The testbeds are useful for our work but also
applicable for other projects involving the 802.11 wireless protocol.
Table of contents:
| Protocol design documents [top] |
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Final report
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Final Presentation
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Final poster
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March Progress Update (pdf) (Word)
(pdf from latex) -- Provides overview
of different protocol design approaches. Some of the descriptions might
be vague because we are still elaborating the protocols.
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Original Project Proposal -- Written
at start of semester; see update for current objectivies.
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Our MMAC protocol extensions -- Describes
our enhancement to the multi-channel MAC protocol (So and Vaidya). In particular,
it explains our novel application of “secure bit commitment” to negotiate
a rendezvous channel unbiased by the negotiating hosts.
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Net lunch presentation -- First public
presentation about our protocol design. We had useful feedback from the
audience.
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Protocol evaluation (ps) (mathematica):
Algebraic evaluation of four protocols (original 802.11, MMAC, our MMAC,
and minimal channel switching). The description requires an overview understanding
for the protocols, for example, as described in the project update.
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Protocol security (link fixed shortly): describes security considerations
for the protocol design.
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Backoff Model (Word)(ps)
Incorporating Cali et al. backoff model with our protocol evaluation
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Time-multiplexing protocol Similar
to the Point coordination function (PCF)
| Wireless card experiments [top] |
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Power consumption experiment -- This experiment
verifies the wireless-card power consumption measurements made by Feeney.
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NI resume/suspend and channel change delay
-- This experiment measures the delay and power consumption of (1) suspending
and resuming the Orinoco NI state and (2) changing channels.
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Packet loss experiment -- This experiment
investigates the correlation between packet loss and several other parameters.
The parameters are bit rate, frequency of the on interval, and the length
of the on interval. These results will be used to modify the wireless power
management protocol.
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NS2 Simulations -- Getting started on statapps
Reading list -- Reading list general
papers related to wireless protocol design, power management, and security.
Literature review -- Papers related to our
protocol design and therefore reviewed in more detail. Our ideas are inspired
some of these papers.
Paper Review: Energy efficiency through application
adaptation. Prepared for 1 hour comp 290 class presentation
Learning LaTeX -- Documenting getting started
with LaTeX on Windows.
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