1. Service Discovery in Wireless Networks • New Ideas • A Jini-based Multimedia Services Application designed for ad hoc wireless systems. • Use of multicast-based service discovery protocols for multimedia services in ad hoc wireless networks. • Adapt to changes in bandwidth in wireless overlay networks. • Provide value-added services to roaming users with minimal configuration. • Integrated user accountability for services. Lookup Service Multicast in a Jini-enabled wireless network Java-based Client GUI Multimedia Provider Service URL Microsoft Access SQL, JDBC • Key Design / Approach • Component-based technologies. • Multimedia Services Application: • Multimedia Client: Plays multimedia files from Service URLs using JMF. • Multimedia Service Provider: Provides Service URLs to clients, interfaces to user database. • Reggie (The Service Lookup by Sun Microsystems): Keeps track of available services. • User Database (Microsoft Access connected to Service Provider via ODBC and JDBC) • Results / Lessons Learned • Service discovery is crucial in emerging packet-based wireless technologies (3G/4G, Bluetooth) • Lessons learned: • Holding users accountable for using wireless bandwidth for value-added services is necessary. • Key challenge: Integrating various enabling technologies (Jini, JMF, JDBC, etc.) Project team: Dogu Arifler, Vivek Sharma URL: http://www.ece.utexas.edu/~arifler/CS395T/index.htm