IP Multimedia Subsystem that is IMS (IP Multimedia Subsystem), is put forward by the third generation of mobile communication partner organizations3GPP (The third Generation Partnership Project),as the general network architecture in IP-based networks to provide multimedia services. It is characterized by realizing the communication has nothing to do with the access methods, complied with the
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IP Multimedia Subsystem that is IMS (IP Multimedia Subsystem), is put forward by the third generation of mobile communication partner organizations3GPP (The third Generation Partnership Project),as the general network architecture in IP-based networks to provide multimedia services. It is characterized by realizing the communication has nothing to do with the access methods, complied with the
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With the increasing development of the Internet, “Best Effort” service can not satisfy requirements of various applications any more. So IETF had proposed Integrated Services (IntServ) Model and Differentiated Services (DiffServ) Model in succession. As IntServ do not have a good scalability, therefore single IntServ Model can’t widely used in the Internet. But DiffServ avoids
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With the development of Internet and Web technologies, traditional distributed computing technologies have not been suitable for the Web application environment. Therefore, Web services come forth that become the focus in the area of industry and academia with the advantages, such as self-contained, modularization, loose coupling and standardization. Nowadays, compositing previous available Web services into
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With the development of Web services technology, more and more Web services provide the same service, how to find the needs that from the same function Web services has become a hot spot. However, the existing keyword-based Web service discovery can not completely meet the customer needs. In response to this question, this thesis proposes
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A major research topic in computer networks is to study how to provide high quality service in the next generation Internet. This thesis concentrates on the study of Quality of Service (QoS) routing algorithms and related technologies with inaccurate network state information, and the analysis on the influence created by the inaccuracy of network state
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Informationization is becoming one of the most important characteristics of the global economic development. Business grows with its applications developed based on the Internet. Networks, especially the Internet, are evolving to be the largest platform of information exchange. Besides, the rapid development of multimedia technology speeds up the dramatic extension of the Internet. The emerging
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Advances in communication technologies and inventions in network applications have posed new challenges to performance and functionalities of Internet router. In the last decade, the Internet has evolved into the largest data communication network in the world, and its backbone network’s bandwidth and traffic have been increasing explosively, which requires high-performance router to meet the
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Following the fast growth of the Internet in recent years, more and more multimedia application carry out in the Internet. Future networks are expected to support various applications, specially multimedia application such as VoIP, VoD. To satisfy different QoS (Quality-of-Service) requirements, some mechanisms need to be employed. But because the Internet nowadays based on IPv4
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The research on Quality of Service (QoS) has been an active area in telecommu-nication society since 1990s. In recent years, Di?erentiated Service (Di?Serv) networkhas been recognized as the main solution for the QoS problem for current Internet.The Assured Forwarding (AF) has been adopted to provide guaranteed subscribedbandwidth for multimedia services. However, with the deployment of
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