Rover Technology: Enabling Scalable Location-Aware Computing

Location-aware computing involves the automatic tailoring of information and services based on the cur- rent location of the user. We have designed and implemented Rover, a system that enables location-based services, as well as the traditional time-aware, user-aware and device-aware services. To achieve system scalability to very large client sets, Rover servers are implemented in an "action-based" concurrent soft- ware architecture that enables fine-grainedapplication-specificscheduling of tasks. We have demonstrated feasability through implementations for both outdoor and indoor environments on multiple platforms.