IODetector: A generic service for indoor outdoor detection

Pengfei Zhou, Yuanqing Zheng, Zhenjiang Li, Mo Li, Guobin Shen

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

89 Citations (Scopus)


The location and context switching, especially the indoor/ outdoor switching, provides essential and primitive information for upper layer mobile applications. In this paper, we present IODetector: a lightweight sensing service which runs on the mobile phone and detects the indoor/outdoor environment in a fast, accurate, and efficient manner. Constrained by the energy budget, IODetector leverages primarily lightweight sensing resources including light sensors, magnetism sensors, celltower signals, etc. For universal applicability, IODetector assumes no prior knowledge (e.g., fingerprints) of the environment and uses only on-board sensors common to mainstream mobile phones. Being a generic and lightweight service component, IODetector greatly benefits many location-based and context-aware applications. We prototype the IODetector on Android mobile phones and evaluate the system comprehensively with data collected from 19 traces which include 84 different places during one month period, employing different phone models. We further perform a case study where we make use of IODetector to instantly infer the GPS availability and localization accuracy in different indoor/outdoor environments.
Original languageEnglish
Title of host publicationSenSys 2012 - Proceedings of the 10th ACM Conference on Embedded Networked Sensor Systems
Number of pages14
Publication statusPublished - 1 Dec 2012
Externally publishedYes
Event10th ACM Conference on Embedded Networked Sensor Systems, SenSys 2012 - Toronto, ON, Canada
Duration: 6 Nov 20129 Nov 2012


Conference10th ACM Conference on Embedded Networked Sensor Systems, SenSys 2012
CityToronto, ON


  • GPS availability
  • Indoor and outdoor detection
  • Mobile phones

ASJC Scopus subject areas

  • Computer Networks and Communications


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