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Handheld Routers: Intelligent Bandwidth Aggregation for Mobile Collaborative Communities
Sharma, Puneet; Lee, Sung-Ju; Brassil, Jack; Shin, Kang G.
HPL-2003-37R1
Keyword(s): bandwidth aggregation; link striping; inverse multiplexing; application-awareness
Abstract: Multi-homed, mobile wireless computing and
communication devices can spontaneously form
communities to logically combine and share the
bandwidth of each other's wide-area communication
links using inverse multiplexing. But membership
in such a community can be highly dynamic, as
devices and their associated WAN links randomly
join and leave the community. We identify the
issues and tradeoffs faced in designing a
decentralized inverse multiplexing system in this
challenging setting, and determine precisely how
heterogeneous WAN links should be characterized,
and when they should be added to, or deleted from,
the shared pool. We then propose methods of
choosing the appropriate channels on which to
assign newly-arriving application flows. Using
video traffic as a motivating example, we
demonstrate how significant performance gains can
be realized by adapting allocation of the shared
WAN channels to specific application requirements.
Our simulation and experimentation results show
that collaborative bandwidth aggregation systems
are, indeed, a practical and compelling means of
achieving high-speed Internet access for groups
of wireless computing devices beyond the reach of
public or private access points.
15 Pages
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