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IMS-based group list management server design and implementation

Author: Yao
Tutor: FanLuHongï¼›ZhangYong
School: University of Electronic Science and Technology
Course: Software Engineering
Keywords: IMS GLMS SIP XCAP text compression
CLC: TP393.05
Type: Master's thesis
Year: 2011
Downloads: 6
Quote: 0
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Abstract


With the fast development and deep application of internet technology in mobile communication, the 3G has developed extensively . And 4G has fulfilled the content of technology. And it will be applied in the future. The development of mobile communication field pushed the emergence of more communication services. In the 3G technology , new multimedia services are provided by many big corporations. IMS is an IP multimedia subsystem advanced by 3GPP.As a project of network convergence, IMS adopted SIP as a session protocol, to converge mobile network and fix network, making communication independent of the interface methods in IMS. Multimedia operation control function is detached from the carrying capacity. IMS will be a general platform, supply not only multimedia operation based on IP, but also voice, data and video based on tradition technology. MSN, QQ , instant message, multimedia session operation can run at IMS platform. IMS network structure is a over network, which spliced exchange of circuit and IP group . With them, IMS directed the orientation of multimedia communication development.An important group list management service is provided by IMS. Many instant message services need group list management, as a common platform, thus group List management services is exited in IMS. The functions is provided by group list management service including two parts: group management and list management. Specifically speaking, it includes the function of Query, addition , update and delegation of group list and contactors ,but also the function of notifying the terminal user to join and list.Based on the rules of group list management server in the OMA document, the paper advanced a system structure of CF and DF, including analyzing the system function, advancing the structure, based on the existed parser tools, giving a new parser modal, designing and fulfilling the SIP protocol stack; design a status machine and process logic XCAP message; advanced a simplified project of SIP message. this part content become an innovation. Advanced and described the process of group owner inviting terminal user to join the group. combined SIP with XCAP to realize list describe-notify. replace XML with database table to store list data; used java to develop a simulated terminal to test system function.

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