Paper Info
Title
Directional handoff using geomagnetic sensor in indoor WLANs
Abstract
More and more mobile devices, such as smartphones and pad/tab devices, are being used in IEEE 802.11 Wireless LANs (or Wi-Fi). However, mobile users are currently unsatisfied with using Wi-Fi on the move due to large handoff delay. In order to perform fast handoff, this paper proposes a new scheme using a geomagnetic sensor (or a digital compass) embedded in mobile devices. The proposed scheme predicts the direction of movement of a Mobile Station (MS) from the currently associated Access Point (AP) and performs active scanning with a reduced number of channels. The proposed scheme was implemented in Android smartphones and their performance was evaluated in a real indoor WLAN environment. Our test results show that the proposed scheme reduces handoff delay compared to conventional handoff and selective scanning scheme. In addition, the proposed scheme does not require modification to existing APs, which makes it very practical for using real-time multimedia services on current mobile devices.
Year
DOI
Venue
2012
10.1109/PerCom.2012.6199859
PerCom
Keywords
Field
DocType
mobile devices,ieee 802.11,ap table,handoff delay reduction,android smartphones,digital compass,active scanning,mobility management (mobile radio),mobile station movement direction prediction,geomagnetic sensor,directional handoff,indoor wlans,real-time multimedia services,access point,performance evaluation,smart phones,wireless lan,fast handoff,wi-fi,magnetic sensors,indoor radio,azimuth,mobile station,real time,mobile device,ieee 802 11,authentication
IEEE 802.11,Compass,Android (operating system),Mobile station,Computer science,Computer network,Communication channel,Mobile device,Earth's magnetic field,Handover
Conference
ISSN
ISBN
Citations 
2474-2503
978-1-4673-0257-9
6
PageRank 
References 
Authors
0.50
7
4
Name
Order
Citations
PageRank
Sangyup Han1152.83
Myung-Chul Kim266557.05
Ben Lee327331.56
Sungwon Kang440449.55