Improving IEEE 802.11 PSM for smartphones by exploiting Hidden Tail-time

Author

Young Deok Park ; Kyoung-Hak Jung ; Young-Joo Suh

Author_Institution

Dept. of Comput. Sci. & Eng., Pohang Univ. of Sci. & Technol. (POSTECH), Pohang, South Korea

fYear

2013

fDate

23-25 Oct. 2013

Firstpage

1

Lastpage

3

Abstract

WiFi interface is a significant contributor to battery draining on mobile device such as WiFi smartphone. Since distinguishing between unwanted packet and active packet is not feasible at MAC layer, the power management mechanism is equally affected by unwanted packets (packets with unreachable destination port). In this paper, we propose a probing and discarding scheme. It forces unwanted packet to be delivered through the “Hidden Tail-time” that is an additional awake time immediately before smartphone switches from awake-state to sleep-state. Thus, unwanted packets never affect the PSM mechanism. Our proposed scheme improves power saving by up to 67% under mixed setting of unwanted packet and active packet.

Keywords

smart phones; wireless LAN; IEEE 802.11 PSM; MAC layer; PSM mechanism; WiFi interface; WiFi smartphone; active packet; awake-state; battery draining; destination port; discarding scheme; hidden tail-time; mobile device; power management mechanism; power saving; probing scheme; sleep-state; smartphone switches; Batteries; Computer aided manufacturing; Delays; IEEE 802.11 Standards; Power demand; Smart phones; Switches; Hidden Tail-time; IEEE 802.11; PSM; Tail-time;

fLanguage

English

Publisher

ieee

Conference_Titel

Network of the Future (NOF), 2013 Fourth International Conference on the

Conference_Location

Pohang

Type

conf

DOI

10.1109/NOF.2013.6724528

Filename

6724528