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On power and throughput tradeoffs of wi fi and bluetooth in smartphones
1. ON POWER AND THROUGHPUT TRADEOFFS OF WI-FI AND
BLUETOOTH IN SMARTPHONE’S
ABSTRACT
This project describes a combined power and throughput performance
study of Wi-Fi and Bluetooth usage in smart phones. 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 Wi-Fi in their respective non-communicating modes are
also compared. The study reveals several interesting phenomena and tradeoffs. In particular, the
paper identifies many situations in which Wi-Fi 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
researcher’s and smart phone 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.
