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Ubiquitous Mobile Awareness from Sensor Networks
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media. (SensorBasedServices, SensibleReality)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.ORCID iD: 0000-0002-1342-0966
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2009 (English)In: Lecture Notes of the Institute for Computer Sciences Social Informatics and Telecommunications Engineering Volume 12, Springer, 2009, p. 147-150Conference paper, Published paper (Refereed)
Abstract [en]

Users require applications and services to be available everywhere,enabling them to focus on what is important to them. Therefore, contextinformation (e.g., spatial data, user preferences, available connectivity anddevices, etc.) has to be accessible to applications that run in end systems closeto users. In response to this, we present a novel architecture for ubiquitoussensing and sharing of context in mobile services and applications. Thearchitecture offers distributed storage of context derived from sensor networkswirelessly attached to mobile phones and other devices. The architecture alsohandles frequent updates of sensor information and is interoperable withpresence in 3G mobile systems, thus enabling ubiquitous sensing applications.We demonstrate these concepts and the principle operation in a sampleubiquitous Mobile Awareness service.

Place, publisher, year, edition, pages
Springer, 2009. p. 147-150
National Category
Computer Sciences
Identifiers
URN: urn:nbn:se:miun:diva-9949ISI: 000302334000018Scopus ID: 2-s2.0-84885888176OAI: oai:DiVA.org:miun-9949DiVA, id: diva2:241024
Conference
Workshops on Mobile Wireless Middleware, Operating Systems, and Applications, Mobilware 2009; Berlin; Germany; 28 April 2009 through 29 April 2009
Available from: 2009-09-30 Created: 2009-09-30 Last updated: 2018-01-13Bibliographically approved
In thesis
1. Enabling Adaptive Context Views for Mobile Applications: Negotiating Global and Dynamic Sensor Information
Open this publication in new window or tab >>Enabling Adaptive Context Views for Mobile Applications: Negotiating Global and Dynamic Sensor Information
2011 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Mobile devices with Internet access and large amounts of sensors, pushes the development of intelligent services towards new forms of pervasive applications. These applications are made context-aware by utilizing information from sensors and hence the context of a situation, in order to provide a better service. Based on this, the focus of this thesis is on the challenge of creating context awareness in mobile applications. That both utilizes dynamic context information from globally available sensors and provides adaptive views of relevant context information to applications.

The first challenge is to identify the properties of an architecture that provides scalable access to information from global sensors within bounded time, because existing systems do not support these properties in a satisfactory manner. The majority of related systems employ a centralized approach with limited support for global sensor information due to poor scalability. Therefore, this thesis proposes a distributed architecture capable of exchanging context between users and entities on a peer-to-peer overlay. Pervasive applications can thus utilize global sensor information in a scalable and manageable way within predictable time bounds.

The second challenge to support continually changing and evolving context information, while providing it as both adaptive and manageable views to applications. To address this particular problem, this thesis proposes the usage of a locally stored evolving context object called a context schema. In detail, this schema contains all context information that is considered as being relevant for a specific user or entity. Furthermore, this thesis proposes an application interface that can provide snapshots of the evolving context schemas as adaptive views. These views can then be used in context-aware mobile applications, without inducing unnecessary delays.

By successfully addressing the challenges, this thesis enables the creation of pervasive and adaptive applications that utilize evolving context in mobile environments. These capabilities are made possible by enabling access to global sensor information based on a distributed context exchange overlay, in combination with evolving context schemas offered as views through an application interface. In support of these claims, this thesis has developed numerous proof-of-concept applications and prototypes to verify the approach. Hence, this thesis concludes that the proposed approach with evolving context information has the ability to scale in a satisfactory manner and also has the ability to dynamically offer relevant views to applications in a manageable way.

Place, publisher, year, edition, pages
Sundsvall: Mittuniversitetet, 2011. p. 68
Series
Mid Sweden University licentiate thesis, ISSN 1652-8948 ; 58
Keywords
Context, Sensors, Mobile applications
National Category
Computer Sciences
Identifiers
urn:nbn:se:miun:diva-13919 (URN)STC (Local ID)978-91-86694-36-4 (ISBN)STC (Archive number)STC (OAI)
Opponent
Supervisors
Projects
MediaSense
Available from: 2011-06-03 Created: 2011-06-03 Last updated: 2018-01-12Bibliographically approved

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Kanter, TheoPettersson, StefanForsström, StefanKardeby, VictorÖsterberg, Patrik

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