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On power and throughput tradeoffs of wi fi and bluetooth in smartphones
1. On Power and Throughput Tradeoffs of WiFi and Bluetooth in Smartphones
This paper describes a combined power and throughput performance study of WiFi and
Bluetooth usage in smartphones. The work measures the obtained throughput in various settings
while employing each of these technologies, and the power consumption level associated with
them. In addition, the power requirements of Bluetooth and WiFi in their respective non-
communicating modes is also compared. The study reveals several interesting phenomena and
tradeoffs. In particular, the paper identifies many situations in which WiFi is superior to
Bluetooth, countering previous reports. The study also identifies a couple of scenarios that are
better handled by Bluetooth. The conclusions from this study suggest preferred usage patterns, as
well as operative suggestions for researchers and smartphone developers. This includes a cross-
layer optimization for TCP/IP that could greatly improve the throughput to power ratio whenever
the transmitter is more capable than the receiver.
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