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QoS simulation model in NS2
 Balej, Jiří ; Burda, Karel (referee) ; Šimek, Milan (advisor)
In this bachelor thesis is described fundamental principle of IPTV and all the necessary conditions for high-quality video and audio signal. In reference is the recommendation of DSL Forum TR-126, where are summarized QoS parameters for IPTV. There is the explanation of Triple play service as a combined distribution of television, telephone and high-speed Internet. In one chapter are presented methods for asssure Quality of Service (QoS). There are described the method of Integrated services and especially Differentiated services. It explains a function of edge and core routers in Differentiated services. Methods for random early detection (RED) a scheduling are described too. The aim of this thesis was to create two laboratory tasks in the Network Simulator 2. The first lab simulates VoIP traffic in data network and assure QoS for VoIP. In the second lab is a simulated the network with Triple play service and the goal is to assure the recommended parameters for IPTV. To resolve the aim of this work, was needed to study the function of Network Simulator 2 and focus on settings for Differentiated services.
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