This page is an entrance point to the Licentiate thesis of Martin Jonsson, Presented at the Dept. of Computer and Systems Sciences, Stockholm University/KTH, May 2002.
Supporting Context Awareness
in
Ubiquitous Service Environments
Licentiate Thesis
By
Martin Jonsson
The FUSE research group
Department of Computer and Systems
Sciences
Forum 100, 164 40 Kista
Abstract
Computing devices are becoming wireless,
increasingly smaller and embedded into other artefacts. Some of them are mobile
while others are built into the environment. The novel technologies are also
becoming more dependent of communication with other computing devices over
different kinds of networks. These interconnected devices constitute locally
distributed computing environments that will set new requirements on the design
of software systems.
A framework, which provides means to model and
design this kind of computing environments, is introduced under the notion
of Ubiquitous Service Environments, describing
locally distributed systems with interconnected software services.
Two specific problems are addressed for this kind
of computing environments: Firstly how to acquire and distribute information
about a user’s context in order to enable new kinds of application behaviours.
The other problem that is being addressed concerns how to create means for
context aware service discovery, e.g. how a mobile computing device can discover
computational resources in the vicinity.
The Context Shadow system is presented, which
makes it possible for services to ask questions about a person’s current context,
and specifically about the computational services that are relevant to that
context. The system has also been extended with a sensor platform in order
to support the deployment of sensors used to collect context information.
Paper
A: Context Shadow: An Infrastructure for Context
Aware Computing
Submitted for review based on invitation to the journal Applied Artificial
Intelligence.
A shorter version of this paper was presented at the workshop Artificial Intelligence
in Mobile Systems (AIMS) in conjunction with ECAI 2002, July 22nd, 2002. Lyon,
France.
Paper
B: Building extendable sensor infrastructures
for pervasive computing environments
Technical Report 2002-019, Dept. of Computer and Systems Sciences, Stockholm
University/KTH.
Paper
C: A Ubiquitous Service Environment with Active
Documents for Teamwork Support
Presented at the Ubicomp 2001 Conference, Atlanta, Georgia, September 2001.