Design And Implementation Of Converged User Information System In CPM Service

With the evolution of network technology and terminal capability, the user requirements of messaging services gradually turn to multimedia interaction, multi-address/multi-service access and unified service experience. As a result, Open Mobile Alliance (OMA) defined Converged IP Messaging (CPM) service, which can provide IP-based converged multi-media messaging service experience through a horizontal enabler framework based on SIP/IP core network. Based on a unified framework, CPM service system breaks the isolation barriers among various messaging service systems, so it can provide an integrated messaging service experience.In a variety of CPM service scenarios, different kinds of user-specific information maintained by distributed network entities is significantly supportive for decision-making, service control and delivery process in CPM service system. However, sometimes there is some redundancy or conflicts of CPM user information in different sources. It will result in tremendous impact for accurate and efficient service delivery and user experience improvement in CPM service. So, the realization of user information convergence is one of the key problems to deliver a converged messaging service.By achieving a converged user information subsystem in CPM service system, which enables real-time perception, information relevance and redundancy processing of CPM user information from distributed information sources, CPM service system can get better efficiency and accuracy. Based on the research of CPM service proposed by OMA, the author of this thesis analyses the user information sources, information categories and information usage in CPM service. According to the converged user information scheme proposed by project team, the author have designed and realized converged user information system which is composed of user information supportive system and user information convergency scheme. The converged user information system has been tested and validated in project team, and applied in prototype system of CPM service.At the first part of this thesis, we introduce CPM service system and information sources and usage of CPM user information. Then we describe the Converged User Information scheme and system. On the basis of that, we emphasize on the requirement analysis, design and implementation of the system, and provide the test results. Lastly, we give the analysis of the validity of CPM-based Converged User Information System based on the test results.