Semantic Location Based Services for Smart Spaces

Enhancing the physical environment of users with IT and communication elements is one of the main objectives of the pervasive computing paradigm. The so-called “smart spaces”, which are typical pervasive computing environments, combine computing infrastructure with intelligent and context-aware services in order to advance the users' computing experience. In this paper we describe a metadata-based infrastructure that is required for delivering semantics-aware location-based services in smart spaces. This infrastructure involves geometric and ontological spatial representation as well as graph- and knowledge-based navigation algorithms