IMS域的切换研究IMS的业务开发-计算机应用技术专业毕业论文.docx

北京邮电大学硕士学位论文 IMS域的切换研究和IMS的业务开发 IMS HANDoFF RESEARCH AND IMS APPLICATION DEVELoPMENT ABSTRACT IMS(IP Multimedia Subsystem)is not only the core technology for next generation networks，but also for resolving integration of mobile and fixed networks，introducing the different mode of service of voice，data, video triple integration．心for IMS industry chain developmenmt，there are still many issues to be addressed at present．In the technical standards， IMS mobile management mechanism iS not perfect enough．IMS is not suitable for real—time applications，Can not guarantee the continuity of conversation；at the product level，lack of attractive new service and new applications，business models and profit model are uncertain． This Paper analyses the IMS network architecture and the requirements of mobility management，make theory and quantitative analysis of the mobile IP protocol and SIP mobility management mechanism，proposes a seamless switching solution that suitable for the IMS heterogeneous network environment，the solution reducing the handoff delay by advanced address reservation，and reducing packet lost by advanced data transmitted．This solution do not need additional network components．itS easy to implement． By analysing the IMS network applications，this paper presents an IMS-based innovative business applications：audio and video interviews service．The service based on the IMS．and make fuU use of the facilities provided by the IMS and the flexibility of SIP．solve the current 1ack of valuable 3 G network applications，and to enlaance the user experience． This paper also conduct a detailed functional analysis and system design． KEY WORDS IMS，Seamless handoff，heterogeneous network,SIP， VideoAudio system  独创性(或创新性)声明 本人卢明所呈交的沦文是本人在导师指导下进行的研究_L作及取得的研究成果。尽我 所知，除了文中特别加以标注和致谢中所罗列的内容以外，论文中不包含其他人已经发表 或撰写过的研究成果，也不包含为获得北京邮电大学或其他教育机构的学位或证书而使用 过的材料。与我一同工作的同志对本研究所做的任何贡献均已在论文中作了明确的说明并 表示了谢意。 申请学位论文与资料若有不实之处，本人承担一切相关责任。 本人签名：本人签名： 墓弪查挫丞拉企比 日期：．．日期：．． 坦2虚：≥：；j坦2a：≥：；j 关于论文使