Document Type

Technical Report

Publication Date

2003-09-24

Filename

wucse-2003-63.pdf

DOI:

doi:10.7936/K7D798TV

Technical Report Number

WUCSE-2003-63

Abstract

Context-aware mobile applications require constant adaptation 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 an infrastructure for sensing, collecting, and providing context information to applications. In this paper, we demonstrate the feasibility of providing such an infrastructure. It 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 opportunistically encountered components. We also discuss the novel context-aware abstractions we implemented and the programming knowledge necessary to write applications using our middleware. Finally, we provide examples that demonstrate the flexibility of the infrastructure and its ability to support a variety of applications.

Comments

PLEASE SEE WUCSE-04-18

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