Context-Aware Service Infrastructure

This paper presents an infrastructure for building and operating context-aware services in ambient computing environments. The system is managed in a non-centralized manner and provides users with agents and detects the locations of users and deploys multiple location-aware service-provider agents at distributed computers by using active RFID-tags and mobile agent technology. For example, when a user moves from location to location, the system can dynamically deploy his/her service-provider agents at the computers close to the current location. We also evaluated the system in the real world to demonstrate its utility and effectiveness.