Publicerad: 2003-12-10
ISBN:
ISSN: 1650-3686 (tryckt), 1650-3740 (online)
Due to the variety of widespread network communication technologies; a user has more possibilities to access various services. However; having alternative networks and services does not bring ease to the user immediately; but often results in increased burdens in terms of repetitive configuration and selection work; although the user is only interested in the actual use of the appropriate services. Our project tries to attack this problem; aiming to facilitate the users (in particular the mobile users) ability to make use of different services in an affordable way; based on adaptive services which exploit their awareness of the users context. In this paper; we propose a service-oriented context infrastructure; to simplify the exchange of context among services; thus facilitating users and applications access of services in an efficient way. The Session Initiation Protocol (SIP) and its sibling protocols were adopted for transferring context information (encoded in XML) within our infrastructure.
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