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Aittola M (2003)
Location-aware services in mobile devices.
M.Sc. thesis, Department of Electrical and Information Engineering, University of Oulu, Finland (in Finnish).
Location-aware services use the user’s location to provide him/her with added
value. Such services are valuable especially to mobile users. Advances on
positioning technologies and small terminal devices have made developing
mobile location-aware services possible. It requires knowledge from many
domains of technology to build a location-aware service. The key domains
include positioning methods and the technologies of modelling, storing,
delivering and visualizing location information.
In this work, the concepts of location information and its use as part of the
user’s context are studied. The research done on context-awareness is reviewed.
Based on the review, the most important ways of using location in context-aware
services are defined. This work also figures out what technologies one could
choose as the building blocks of location-aware services, considering the limited
resources of mobile environment.
This work also presents SmartWare, a platform for mobile services. The
author has contributed to the design and implementation of the platform and
the location-aware mobile services, named SmartServices, built on it. The mapbased
guidance service has been built wholly by the author. The technological
challenges of location-awareness are solved in practice in the process of building
the platform and the services.
SmartWare platform and map-based guidance were tested in SmartLibrary,
a mobile service built in the main library of the University of Oulu. The test
users searched literature from the library using the map-based guidance, and
compared the service to the traditional way of searching literature with shelf
classification codes. The users also gave feedback of the laboriousness and
usability of the searching methods. The results of the test show that finding
material from the library is easier with the map-based guidance than in the
traditional way. Especially novice library users preferred the map-based
guidance. After testing, the guidance was taken into the selection of services of