The objective of this thesis is to explore the new open standard framework SIMPLE (Session Initiation Protocol for Instant Messaging and Presence Leveraging Extensions) and its ability to provide presence mediated communication between mobile users.
To discuss central concepts like communication, mobility, presence, context, awareness and interaction overload I have done a literature study and I present important theories and models to explain these concepts.
For giving an overview over new communication options with both voice over IP and GSM available on mobile phones I have made several use cases and scenarios describing these new possibilities
To test the abilities of the SIMPLE framework I have made a working prototype setup which allows for sharing of presence information between users. And I also discuss issues with communication that SIMPLE can help resolve.