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We investigate using opportunistic communication in order to utilize
transient connections while on the move. Our experiments provide
an upper bound for this type of communcation.
Wireless networking can support in-motion users by providing
occasional opportunities to transmit and receive data. We measure
the performance of UDP and TCP transfers between a car traveling
at speeds from 5 mph to 75 mph, and an 802.11b access point. We
analyze the impact of bandwidth and delay limitations in the
backhaul network on the feasibility of in-motion transfer with
typical Internet applications. We observe that in interference-free
environments, a significant amount of data can be transferred using
off-the-shelf equipment. We find that performance suffers mostly
from network or application related problems instead of wireless
link issues, i.e., protocols with handshakes, bandwidth
limitations, and long round-trip times.
Richard Gass, James Scott, and Christophe Diot
Measurements of 802.11 In-Motion Networking
To appear in the 7th IEEE Workshop on Mobile Computing Systems
and Applications,Semiahmoo Resort, Washington, USA, April, 2006
Download: (pdf)
(pps)
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