This Article 
 Bibliographic References 
 Add to: 
How to Mitigate Signal Dragging during Wardriving
January-March 2010 (vol. 9 no. 1)
pp. 20-27
Jinyoung Han, Seoul National University
Jeongkeun Lee, Hewlett-Packard Laboratories
Ted "Taekyoung" Kwon, Seoul National University
Daehyung Jo, Samsung Electronics
Taejoon Ha, Radiant Technologies
Yanghee Choi, Seoul National University
In wardriving, test devices in moving vehicles measure received signal strengths (RSSs) from nearby base stations (BSs) and record them with location information, which is a key component in localization technologies. In this article, the authors analyze the wardriving data in real WCDMA, GSM, and Wi-Fi networks and describe how signal dragging degrades their performance. They also propose three methods for postprocessing wardriving data to filter out any outdated BS information, thereby mitigating this effect.

1. M.Y. Chen et al., "Practical Metropolitan-Scale Positioning for GSM Phones," Proc. Ubicomp, Springer, 2006, pp. 225–242.
2. Y.-C. Cheng et al., "Accuracy Characterization for Metropolitan-Scale Wi-Fi Localization," Proc. Mobisys, ACM Press, 2005, pp. 233–245.
3. J. Lee et al., "Distributed and Energy-Efficient Target Localization and Tracking in Wireless Sensor Networks," Computer Comm., vol. 29, nos. 13–14, 2006, pp. 2494–2505.
4. D. Fox et al., "Bayesian Filtering for Location Estimation," IEEE Pervasive Computing, vol. 2, no. 3, 2003, pp. 24–33.
5. A. Lamarca et al., "Place Lab: Device Positioning Using Radio Beacons in the Wild," Proc. 3rd Int'l Conf. Pervasive Computing, Springer, 2005, pp. 116–133.
6. M. Kim, J. Fielding, and D. Kotz, "Risks of Using AP Locations Discovered through War Driving," Proc. Pervasive, Springer, 2006, pp. 67–82.
7. P. Bahl and V.N. Padmanabhan, "Radar: An In-Building RF-Based User Location and Tracking System," Proc. IEEE Infocom, IEEE Press, 2000, pp. 775–784.
8. D. Jo et al., "Signal Dragging: Effects of Terminal Movement on War-Driving in CDMA/WCDMA Networks," Proc. Location- and Context-Awareness (LOCA), Springer, 2007, pp. 211–227.
9. "Upper Layer (Layer 3) Signaling Standard for CDMA2000 Spread Spectrum System, 3GPP2 C.S0005-D v2.0," 3GPP2, 2005;

Index Terms:
location-based services, location-dependent and sensitive, mobile applications, computer applications, mobile computing
Jinyoung Han, Jeongkeun Lee, Ted "Taekyoung" Kwon, Daehyung Jo, Taejoon Ha, Yanghee Choi, "How to Mitigate Signal Dragging during Wardriving," IEEE Pervasive Computing, vol. 9, no. 1, pp. 20-27, Jan.-March 2010, doi:10.1109/MPRV.2010.6
Usage of this product signifies your acceptance of the Terms of Use.