From the October 2014 issue
Accurate WiFi Based Localization for Smartphones Using Peer Assistance
By Hongbo Liu, Jie Yang, Simon Sidhom, Yan Wang, Yingying Chen, and Fan Ye
Highly accurate indoor localization of smartphones is critical to enable novel location based features for users and businesses. In this paper, we first conduct an empirical investigation of the suitability of WiFi localization for this purpose. We find that although reasonable accuracy can be achieved, significant errors (e.g., \(6\sim 8m\) ) always exist. The root cause is the existence of distinct locations with similar signatures, which is a fundamental limit of pure WiFi-based methods. Inspired by high densities of smartphones in public spaces, we propose a peer assisted localization approach to eliminate such large errors. It obtains accurate acoustic ranging estimates among peer phones, then maps their locations jointly against WiFi signature map subjecting to ranging constraints. We devise techniques for fast acoustic ranging among multiple phones and build a prototype. Experiments show that it can reduce the maximum and 80-percentile errors to as small as \(2m\) and \(1m\) , in time no longer than the original WiFi scanning, with negligible impact on battery lifetime.
Editorials and Announcements
- According to Thomson Reuters' 2013 Journal Citation Report, TMC has an impact factor of 2.912.
- Get Your Journals as eBooks for Free
- We are pleased to announce that Prasant Mohapatra, the Tim Bucher Family Endowed Chair in the Computer Science Department at the University of California, Davis, has been named the new Editor-in-Chief of the IEEE Transactions on Mobile Computing starting in 2014.
- Print on Demand is Now Available for OnlinePlus Titles
- eBooks of issues of TMC can now be downloaded from the Computer Society Digital Library
- EIC Editorial (July 2014)
- A Message from the Outgoing Editor-in-Chief and Associate Editor-in-Chief (Jan. 2014)
- Editorial: Reviewer Appreciation Program (Aug. 2013)
- Editorial and Changes to the Editorial Board (Jan. 2012)
Access recently published TMC articles
Subscribe to the RSS feed of latest TMC content added to the digital library.
Sign up for the Transactions Connection newsletter.
Listen to the OnlinePlus podcast: Computer Society Publishing—two more titles migrate to OnlinePlus™ in 2012.
In this podcast, VP of Publications, David Alan Grier talks about Transactions on Mobile Computing and Transactions on Parallel and Distributed Systems migrating to OnlinePlus™.
TMC is a joint publication of the:
TMC is published in cooperation with: IEEE Electromagnetic Compatibility Society, IEEE Engineering in Medicine and Biology Society, IEEE Technology Management Council, IEEE Information Theory Society, IEEE Instrumentation and Measurement Society, IEEE Power & Energy Society, IEEE Robotics and Automation Society, and IEEE Systems, Man, and Cybernetics Society
TMC is indexed in ISI
IEEE Transactions on Mobile Computing (TMC) is a scholarly archival journal published monthly that focuses on the key technical issues related to Mobile Computing. It is the intent of TMC to publish mature works of research, typically those that have appeared in part in conferences.
Furthermore, it is the intent ofTMC to focus on issues at the link-layer and above in wireless communications, and to focus only on topics explicitly or plausibly related to mobile systems.
Read the full scope of TMC