UWS Broker for Ubiquitous Web Services Dynamic Discovery

Ubiquitous system provides web services which clients want irrespective of specific places and time. However, current services and devices supported by them are operated by different communication systems. To solve this problem, a system which can guarantee interoperability of services and devices is required. This paper introduces the UWS Broker, which is a middleware to discover services dynamically in ubiquitous environments. The UWS Broker, which is SOA oriented, is devised for different network based devices and services.