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<p><b>Abstract</b>—Traditionally, middleware technologies, such as CORBA, Java RMI, and Microsoft's DCOM, have provided a set of distributed computing services that essentially abstract the underlying network services to a monolithic ?black box.? In a mobile operating environment, the fundamental assumption of middleware abstracting a unified distributed service for all types of applications operating over a static network infrastructure is no longer valid. In particular, mobile applications are not able to leverage the benefits of adaptive computing to optimize its computation based on current contextual situations. In this paper, we introduce the <b>Mobi</b>le <b>P</b>latform for <b>A</b>ctively <b>D</b>eployable <b>S</b>ervice (MobiPADS) system. MobiPADS is designed to support context-aware processing by providing an executing platform to enable active service deployment and reconfiguration of the service composition in response to environments of varying contexts. Unlike most mobile middleware, MobiPADS supports dynamic adaptation at both the middleware and application layers to provide flexible configuration of resources to optimize the operations of mobile applications. Within the MobiPADS system, services (known as mobilets) are configured as chained service objects to provide augmented services to the underlying mobile applications so as to alleviate the adverse conditions of a wireless environment.</p>
Middleware, mobile applications, mobile computing support services, mobile environments.

A. T. Chan and S. Chuang, "MobiPADS: A Reflective Middleware for Context-Aware Mobile Computing," in IEEE Transactions on Software Engineering, vol. 29, no. , pp. 1072-1085, 2003.
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