Categorized Multimedia Information Sharing Service in IMS

Abstract

A new SIP event package called information-category is proposed based on the SIP event notification framework. With this event package an information sharing service is provided in IMS with SIP signaling. The end user could subscribe to interested information categories with SUBSCRIBE, get information from information sharing application server with NOTIFY, and post information with PUBLISH message. A method is provided to let information-category subscribers share multimedia information. Some basic SIP event notification extensions are analyzed to show the new event package is compliant with the existing event package family. With this new service SIP users could get seamless access to community-based and user-generated content on various devices in IMS network.