Distributed Admission Control and Quality Control for Multicast Network
Item
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Title
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Distributed Admission Control and Quality Control for Multicast Network
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Identifier
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d_2009_2013:4f116a46a8ab:11393
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identifier
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11658
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Creator
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Yang, Qihua,
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Contributor
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Tarek N. Saadawi
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Date
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2012
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Language
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English
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Publisher
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City University of New York.
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Subject
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Electrical engineering
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Abstract
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The evolution of network communication techniques has reached a point where more and more applications, such as video conference and streaming audio require a guaranteed quality service. A lot of researchers propose different admission control schemes or resource schedule schemes to limit or reasonable use the network resource. Most of them focus on the unicast network while few consider the feature of multicast network. Multicast streaming use the different transmitting mode and has different network resource access approach.;The motivation of this thesis is to propose the network resource measurement algorithms regarding to the multicast characters and design a multicast admission control and quality control scheme. This system control the receiver to join the group by segment path measurement algorithm, choose the best branch point by single link capacity measurement algorithm and switch the group for the receivers by measurement and SVR mixed prediction algorithm in order to ensure the streaming quality.;We present a segment path capacity measurement by injecting a few different sized probing packets. We probe the branch tree instead of the full path to improve the efficiency and reduce the disturbance of cross traffic. The segment capacity together with end-to-end queuing delay decides whether the new receiver is accepted to join the group or not.;We introduce the single link capacity measurement by using the probing packet train pair. It is the further development of segment probing algorithm. This algorithm can be used to resource management, topology control and the branch point selection. We use the link capacity distribution to select the best branch point to graft the multicast receiver to the multicast tree.;Next we design a SVR and measurement based network condition prediction algorithm. For multicast streaming mechanism, in order to ensure the quality service of receiver, the same source normally creates multiple groups, which provide different streaming quality. The receiver can switch group based on the real time network condition. Our scheme injects the probing packet to measurement end-to-end queuing delay. The delay and buffer information are collected as training set of SVR algorithm to predict the network condition in near future. It can trigger the receiver to switch the group before it suffers severe packet loss or delay.;We also implement the multicast admission control system. The system supports multi group switching for receivers. The receiver measures the network by the algorithms we mentioned above to decide which group to join. In real time, the receiver monitors the network and switches the group in order to maintain the quality of streaming service. The system supports almost all kinds of video streaming format and has good performance.
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Type
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dissertation
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Source
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2009_2013.csv
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degree
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Ph.D.
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Program
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Engineering
