Paper Info
Title
Footprint: cellular assisted Wi-Fi AP discovery on mobile phones for energy saving
Abstract
Recently commercial mobile phones have been shipped with integrated Wi-Fi NIC (Network Interface Card), while a fundamental barrier for easily using such Wi-Fi is its high energy cost for phone. We profile two integrated mobile phone Wi-Fi NICs and observe that the energy cost on PSM (Power Saving Mode) is greatly reduced, yet the scan state still costs most of the energy when it's not connected on discovering potential AP (Access Point). In this paper, we propose footprint, leveraging the cellular information such as the overheard cellular tower IDs and signal strength, to guild the Wi-Fi scan and thus greatly reduce the number of unnecessary scans through the changes and history logs of the mobile user's locations. Our experiments and implementation demonstrate that our scheme effectively saves energy for mobile phone integrated with Wi-Fi.
Year
DOI
Venue
2009
10.1145/1614293.1614305
Proceedings of the 4th ACM international workshop on Experimental evaluation and characterization
Keywords
DocType
Citations 
cellular,mobile user,energy saving,wi-fi ap discovery,cellular information,power saving,ap discovery,commercial mobile phone,high energy cost,integrated wi-fi nic,wi-fi nics,energy cost,mobile phone,overheard cellular tower ids,integrated mobile phone,signature,signal strength,network interface card
Conference
20
PageRank 
References 
Authors
1.29
12
4
Name
Order
Citations
PageRank
Haitao Wu12394185.35
Kun Tan2135098.64
Jiangfeng Liu3202.31
Yongguang Zhang43461248.65