Energy efficient Wifi tethering on a smartphone

Author

Kyoung-Hak Jung ; Yuepeng Qi ; Chansu Yu ; Young-Joo Suh

Author_Institution

Dept. of Comput. Sci. & Eng., Pohang Univ. of Sci. & Tech., Pohang, South Korea

fYear

2014

fDate

April 27 2014-May 2 2014

Firstpage

1357

Lastpage

1365

Abstract

While numerous efforts have been made to save energy of “client” devices but it has not been addressed for access points (APs) as they are assumed to be supported by AC power. This paper proposes E-MAP, which is an energy saving algorithm for a tethering smartphone that plays a role of mobile AP (MAP) temporarily. It saves MAP´s energy by introducing the sleep cycle as in power save mode (PSM) in 802.11 but successfully keeps clients from transmitting while it sleeps. One important design goal of E-MAP is backward compatibility, i.e., it requires no modification on the client side and supports PSM and adaptive PSM (A-PSM) as well as normal constant awake mode (CAM) clients. Experiments show that E-MAP reduces the energy consumption of a Wifi tethering smartphone by up to 54% with a little impact on packet delay under various traffic patterns derived from real-life traces.

Keywords

packet radio networks; smart phones; telecommunication power management; telecommunication traffic; wireless LAN; A-PSM; CAM client; E-MAP; IEEE 802.11; MAP; adaptive PSM; client device; energy efficient Wi-Fi tethering; energy saving algorithm; mobile AP; normal constant awake mode; power save mode; sleep cycle; smartphone; traffic patterns; Bismuth; Computer aided manufacturing; Computers; Delays; IEEE 802.11 Standards; Protocols; Uplink;

fLanguage

English

Publisher

ieee

Conference_Titel

INFOCOM, 2014 Proceedings IEEE

Conference_Location

Toronto, ON

Type

conf

DOI

10.1109/INFOCOM.2014.6848069

Filename

6848069