Dynamic Activity Lifecycle Management in Ubiquitous Computing Environments

It is inherently allowed that a user engages in more than one activity at the same time. The interweave of multiple activities makes an activity have more than two states, i.e. the paused state in addition to active and inactive states and move from one state to another. In this paper, we propose an activity lifecycle management scheme that enables a system to adapt the services which help a user to do an activity to the state transitions of the activity. The proposed scheme detects the interruption between activities in terms of perceivable effects of their associated services. The state transitions of an activity driven by the interruption are handled by Event-Condition-State-Action (ECSA) policy, which is extended from ECA policy. It specifies how the services should be adapted to the interruption degree - how much the interrupting activity interferes the current activity as well as the state transition of an activity.