A composite sensor-based context modeling method for context-aware pervasive computing
YS Xu, ZX Ma, Xiaoyong Chen, L Li · Lanzhou University Institutional Repository · 2008
Context-aware systems are one of the most important application domains of pervasive computing. In this paper, a new context model is proposed, which is based on the composite sensor concept. Unlike simple ones (physical, virtual or logical sensors), a composite sensor is a logical sensor which is integrated from simple and/or other composite ones. Therefore, composite sensor has more semantic meaning than simple ones and can be used to describe complicated context domain objects, in a natural way that separates requirement from design. Based on composite sensor context model, we present a context modeling method, ComSensor, and a pervasive computing architecture, ComArch, which is suitable for different kinds of pervasive computing applications. The performance examining results of a simulation prototype system show that applications based upon ComArch can run in real-time mode.