Design and Implementation of Mobile Multimedia IM System Based on Hierarchical Model

In order to meet the rapidly growing and changing needs of mobile instant messaging (IM), this paper provides a new service model and implementation mechanism based on Jabber and hierarchical thinking. The communication protocol of our system provides an open, expandable, real-time communication technology that can be used to build a wide range of XML applications. We use Linux C++, MySQL, and protocol conversion technology to develop the services of server and use J2ME technology to develop mobile client software. The system uses the newest network technology to supply WAP access and provide Web services. It is demonstrated by experiment that the system based on the hierarchical model can build stable and efficient mobile IM service that covers multimedia content sharing and corresponds with external services conveniently. It processes a message at an average of 4 milliseconds and the error rate is one ten thousandth.

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