Dynamic federation of partitioned applications in ubiquitous computing environments

A framework for the dynamic aggregation of ubiquitous computers is presented. The framework aggregates applications from more than one mobile component that can migrate from computer to computer during the execution of applications. Using location-tracking systems, the framework can spatially bind partitioned applications to users and other things and dynamically allocate and migrate a federation of partitioned applications on multiple computers according to the capabilities and locations of the computers and the positions of users. The framework also provides inter-component communications and component relocation semantics so that an application made up components can adapt its structure and functionality to changes in resource availability and the physical environment. A prototype implementation of the framework built on a Java-based mobile agent system and its applications are described.