Technical Report Number
Context-aware mobile applications require constant adapta-tion to their changing environments. Technological advancements have increased the pervasiveness of mobile computing devices such as laptops, handhelds, cellular phones, and embedded sensors. The sheer amount of context information necessary for adaptation places a heightened burden on application developers as they must manage and utilize vast amounts of data from diverse sources. Facilitating programming in this data-rich environment requires a middleware infrastructure for sensing, collect-ing, and providing context information to applications. In this paper, we demonstrate the feasibility of providing such a middleware that allows programmers to focus on high-level interactions among programs and to employ declarative abstract speciﬁcations of context in settings that exhibit high levels of mobility and transient interactions with opportunis-tically encountered components. We also discuss the novel context-aware abstractions the middleware provides and the programming knowledge necessary to write applications using our middleware. Finally, we provide examples demonstrating the ﬂexibility of the infrastructure and its abil-ity to support diﬀering tasks from a wide variety of application domains.
Julien, Christine; Roman, Gruia-Catalin; and Payton, Jamie, "Bringing Context-Awareness to Applications in Ad Hoc Mobile Networks" Report Number: WUCSE-2004-18 (2004). All Computer Science and Engineering Research.