Accurate WiFi Based Localization for Smartphones Using Peer Assistance

doi:10.1109/TMC.2013.140

CORC > 北京大学 > 信息科学技术学院

	Accurate WiFi Based Localization for Smartphones Using Peer Assistance
	Liu, Hongbo ; Yang, Jie ; Sidhom, Simon ; Wang, Yan ; Chen, Yingying ; Ye, Fan
刊名	ieee transactions on mobile computing
	2014
关键词	Smartphone peer assisted localization WiFi fingerprint localization
DOI	10.1109/TMC.2013.140
英文摘要	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 similar to 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.; Computer Science, Information Systems; Telecommunications; SCI(E); EI; 2; ARTICLE; hl45@iupui.edu; jie.yang@cs.fsu.edu; ssidhom@stevens.edu; ywang10@stevens.edu; yingying.chen@stevens.edu; yefan@pku.edu.cn; 10; 2199-2214; 13
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/208631]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Liu, Hongbo,Yang, Jie,Sidhom, Simon,et al. Accurate WiFi Based Localization for Smartphones Using Peer Assistance[J]. ieee transactions on mobile computing,2014.
APA	Liu, Hongbo,Yang, Jie,Sidhom, Simon,Wang, Yan,Chen, Yingying,&Ye, Fan.(2014).Accurate WiFi Based Localization for Smartphones Using Peer Assistance.ieee transactions on mobile computing.
MLA	Liu, Hongbo,et al."Accurate WiFi Based Localization for Smartphones Using Peer Assistance".ieee transactions on mobile computing (2014).