Distraction-Free Service in Pervasive Environments Based on Multi-constrained QoS Routing

Pervasive computing provides an off-desktop computing paradigm, which allows users to access information and services anywhere and anytime. A pervasive environment is featured by user mobility. In other words, users may be moving around different locations. The user mobility makes it challenging to provide a distraction-free service since a userpsilas interaction context may change according to his/her location. One fundamental issue is to provide a multi-constrained QoS route between a user and a service provider, which may be changing upon time. This paper proposes a well-designed exact algorithm for the routing issue. Simulation results prove the performance of our approach.