This chapter is structured as follows. First, the main characteristics of smart devices as a means toprovide an embodiment for smart services and viewpoints, abstraction and virtualisation for theseare considered. A range of architectural models for UbiCom systems are analysed (Section 3.2).Next the service provision and access life-cycle described (Section 3.3). Finally, operating systemsupport for service execution is discussed (Section 3.4).
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