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Design and Realization of Service Context Subsystem in Context Aware Autonomic Network

Author: WangZuoSi
Tutor: WangWenDong
School: Beijing University of Posts and Telecommunications
Course: Computer Science and Technology
Keywords: Autonomous networks Quality of service Context-aware Keyframes
CLC: TP311.52
Type: Master's thesis
Year: 2010
Downloads: 53
Quote: 2
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Abstract


With a variety of new technologies are emerging and application of traditional Internet service provides users with the ability to obtain a huge success. However, the growing proliferation of Internet applications and technologies, and complicated at the same time, the network is facing tremendous pressure. On the one hand, the transfer of data types and interactive forms occur diversity changes, no longer confined to the traditional text data transmission and point-to-point interactive mode; the other hand, the traditional architecture of the Internet, the network hierarchical design the drawbacks, business quality of service, network security, as well as other properties are also increasingly exposed. Therefore, there is an urgent need for the Internet architecture necessary improvements to enhance its service capabilities. Topic of \the latest technology, exploration and research to adapt to future network / business needs of autonomy of the new communication network architecture model; autonomous network prototype test, to verify the feasibility of the architecture of the network. The research topics of this paper, context-aware autonomous network business context Subsystem Design and Implementation \For many defects of the current Internet network traffic management measures, such as traffic management mainly refers to the basic flow of the business, the flow of control, the business simple, rough source address filtering, traffic management and lack of perception of the users and the business and other issues, the subject of autonomy from the network point of view, the business context subsystem, network traffic management initiative to conduct business on the business flow depth self-aware, in order to improve the current lack of network traffic management measures. Thesis research business context-aware key technologies and CAANM functional requirements of the business context, design the autonomous network architecture model business context subsystem functional modules, so that to provide active support for the autonomy of the other modules of the system behavior, conditions for CAANM autonomy characteristics. In the a subsystem prototype implementation of the business context, on the research topic of this article is popular for the current Internet, real-time streaming media services require a higher quality of service (QoS, Quality of Service), proposed QoS support real-time video stream key frame identification algorithm (RVKI, Real-Time Video Stream Key Frame Identification Algorithm for QoS). The algorithm can be the source of real-time streaming media business end based on the real-time identification of key frames in IP packets on the packet level and mark recognition results can provide the basis for network QoS management strategy. After test verifies RVKI algorithm to efficiently and accurately identify the key frames to provide users with effective QoS guarantees when network congestion occurs. The test results show that the RVKI able to be efficient, accurate and real-time multimedia services stream their content, depth perception, and the ability to provide intellectual support for autonomous network module to improve the user-perceived QoS. Finally, the paper work and research directions of possible further work are summarized

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