6th Annual International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services

Research Article

Extracting Co-locator context

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        author={Swaroop Kalasapur and Henry Song and Doreen Cheng},
        title={Extracting Co-locator context},
        proceedings={6th Annual International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services},
        keywords={Location Context Co-locators Semantic Location Bluetooth Location},
  • Swaroop Kalasapur
    Henry Song
    Doreen Cheng
    Year: 2009
    Extracting Co-locator context
    DOI: 10.4108/ICST.MOBIQUITOUS2009.6857
Swaroop Kalasapur1,*, Henry Song1,*, Doreen Cheng1,*
  • 1: Samsung Electronics R&D Center in San Jose, CA, USA.
*Contact email: s.kalasapur@sisa.samsung.com, hsong@sisa.samsung.com, doreen.c@sisa.samsung.com


Having reliable context sources is very important for context-aware applications and the devices around a user can be a useful context for many applications. While the importance of ‘devices around’ as a context has been highlighted many times, to the best of our knowledge, there is no systematic mechanism reported to identify and capture this context. In this paper we report our mechanism for extracting patterns that we call co-locators from the surrounding Bluetooth devices. The co-locator context can then be used as an indication about the user’s surroundings. The context can be directly associated with user behavior in the surroundings, which in turn can be used for recommendation purposes. The context can also be used as a supplemental location indicator in the absence of other location mechanisms such as GPS. We then show that our experimental results support the value of using extracted co-locator patterns as good supplemental location indicators for several applications