Title:
Fast and Accurate Link Discovery Integrated with Reliable Multicast in 802.11
Fast and Accurate Link Discovery Integrated with Reliable Multicast in 802.11
Author(s)
Lertpratchya, Daniel
Blough, Douglas M.
Riley, George F.
Blough, Douglas M.
Riley, George F.
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Abstract
Abstract—Maintaining accurate neighbor information in
wireless networks is an important operation upon which
many higher layer protocols rely. However, this operation
is not supported in the IEEE 802.11 MAC layer, forcing
applications that need it to each include their own neighborhood
mechanism, creating redundancies and inefficiencies
and failing to capitalize on potential synergies with other
MAC layer operations. In this work, we propose to integrate
link discovery and neighborhood maintenance with a reliable
multicast extension to the IEEE 802.11 MAC.We show through
simulations that our protocol adapts to neighborhood changes
faster than traditional neighborhood maintenance mechanisms,
thereby allowing MAC-layer multicast operations to achieve
higher delivery rates. We also demonstrate that our protocol
can quickly and reliably distinguish between unidirectional and
bidirectional links. Traditional mechanisms assume links are
bidirectional based on one-way reception of a short “hello”
packet, which results in significant problems with higher-layer
operations such as routing because of many unidirectional links
being classified as bidirectional.
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Date Issued
2013
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Resource Type
Text
Resource Subtype
Technical Report