TITRE Adaptive Packet Video Streaming Over IP Networks - LaBRI

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The network administrator uses the PBNM tool (BB) to configure the edge and core routers according to a predefined set of policies. Suppose that the administrator’s domain can handle EF, AF11 and BE class only. The administrator configures the filters using also PBNM tool. The task of the filter is to mark the traffic entering the network with the appropriate PHB according to user profile. At this step, the administrator chooses how to handle excess of traffic (out of profile traffic) by tuning two control thresholds (Min_th and Max_th). External Event Monitor Agent Event Java PDP COPS-PR LDAP Access Policy Store Web server web Interface Java PEP A Java-based Policy Client JNI Interface TCAPI A Java Native Interface C-based Traffic Control API Web-Based Interface PIB Install/Remove/Update Filter Queuing discipline Input Input Filter Filter Class Queuing discipline Class Output Output Queuing Discipline Linux Traffic Control Figure 5-8: Dynamic policy-based management system implementation The Diffserv router implementation is a based on the Linux traffic control implementation described in [153] and [154]. Each element of the Diffserv router is viewed as a set of components that can be managed via the interfaces specified in [183], [184] and [184]. The following elements are included in our router implementation (see Figure 5-9): • Queuing disciplines: the queue determines the order in which data is transmitted. Each network interface has a queuing discipline associated with it, which controls how packets are treated. • Classes: traffic can be divided into classes according to certain rules. Each class maintains a queuing discipline to serve it packets. 120
• Filters: to put packets into classes we use filters. Filters are used to distinguish among different classes of packets and process each class in a specific way. • Policing: used to control the amount of traffic from a given class. Classifier Metter Queuing / Scheduler Meter DiffServ Traffic Path Classifier Marker Packet scheduler DiffServ node (BA) Classifier behavior Traffic Controller Classifier Filter police Class Queiung discipline Figure 5-9: Diffserv router implementation 5.5 Performance Evaluation 5.5.1 DVMA Performance Using Network Simulations In our simulation, the MPEG-4 sequence is obtained by using a set of multimedia components such as audio and video Elementary Streams ESs. Video ES is from the highly bursty Star Wars movie. Voice, Object Description, Scene Description and Data ESs were generated according to an exponential distribution. Three video streams were generated that are associated with: • The MPEG-4 base layer video stream offers a minimum presentation quality (i.e. minQoS), • The MPEG-4 enhanced layer 1 video stream improves minQoS to a better quality (i.e. MedQoS). • The MPEG-4 enhanced layer 2 video stream improves medQoS to the maximum quality (MaxQoS). 5.5.1.1 Network Models We use the network simulation models depicted in Figure 5-10 and Figure 5-11 for evaluating an MPEG-4 video on demand (VOD) service over classical IP best effort service and IP Diffserv services respectively. 121
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UNIVERSITÉ DE VERSAILLES SAINT-QUE
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Résumé Nous constatons aujourd’
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3 Related Work ....................
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5.5.1.2 Simulation Results.........
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List of Figures Figure 1-1: Structu
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Figure 5-15: End-to-end packet tran
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Acknowledgments The first person I
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[11] Toufik Ahmed, Guillaume Burida
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d’accès. Les interactions de QoS
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Métrique MAX_DELAY PREF_MAX_DELAY
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1.1.2 Proposition dun Protocole d'E
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des paquets RTP. Reste toujours le
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Nous pouvons distinguer trois possi
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1.1.2.5.2 Multiplexage des Flux El
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l’horloge est par défaut égale
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La valeur R TCP représente le déb
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Pour ces raisons, nous nous intére
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Telles que illustrés par la Figure
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3. DMIF2SIP vérifie si son propre
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utilisée optionnellement pour loca
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Chapter 2 2 Introduction 2.1 Motiva
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conditions. Based on end-to-end fee
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Chapter 3 3 Related Work Nowadays,
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• multicasting: it takes the stre
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expensive, fixed delivery and recep
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3.1.6 Static vs. Dynamic Channels T
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environment because they require a
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H.261 is called video codec for aud
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VideoScene (VS) VideoObject (VO) Vi
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The emphasis of MPEG-7 will be the
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Temporal scalability involves parti
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multitude of streams. It can switch
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increased linearly in the absence o
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3.2.2.1 End-to-End Retransmission R
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correctly received block. The missi
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epresent user traffic. The delay ca
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3.2.5 IP Signaling Protocols for Pa
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two H.323 endpoints or between an e
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Chapter 4 4 Adaptive Packet Video T
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4.1.1 Video Classification Model Pr
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attributes can refer to the QoS par
Page 85 and 86: In RBF, 2 D = X − is the distance
Page 87 and 88: Figure 4-6: Experiment testbed In t
Page 89 and 90: 190 180 170 End-to-end delay MPEG-4
Page 91 and 92: Sync Layer. The SL-packetized strea
Page 93 and 94: conveyed by MIME format parameters
Page 95 and 96: the same value. This timing informa
Page 97 and 98: 4.2.2.1 Fragmentation We propose to
Page 99 and 100: Timestamp: Indicates the sampling i
Page 101 and 102: When G is used as generator matrix,
Page 103 and 104: 4.2.3 Performance Evaluation Intens
Page 105 and 106: 0.3 0.25 our proposal classical app
Page 107 and 108: lost packet at the receiver. Conseq
Page 109 and 110: marking scheme. The server must be
Page 111 and 112: The video server adds audio-visual
Page 113 and 114: Marker (TR3CM) [131] to mark the ba
Page 115 and 116: VO1 VO2 AVO Scenario Audio BL EL1 E
Page 117 and 118: Throughput (Kbits) 3000 2500 2000 1
Page 119 and 120: Throughput (Kbits) 3000 2500 2000 1
Page 121 and 122: 4000 3500 3000 2500 2000 1500 1000
Page 123 and 124: 45 40 Original Quality Received Qua
Page 125 and 126: Chapter 5 5 A Dynamic Packet Video
Page 127 and 128: The TCM algorithm is based on a tok
Page 129 and 130: BEGIN Initialize the classification
Page 131 and 132: User Profile (Token Bucket) Traffic
Page 133 and 134: 5.3.3 QoS Management Algorithm Spec
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Page 139 and 140: mechanism associated with the Drop
Page 141 and 142: Figure 5-16: Packets loss with IP D
Page 143 and 144: 5.5.2.3 Experimental Results Figure
Page 145 and 146: 1 MPEG-4 Based Layer Stream -AF11 M
Page 147 and 148: 0.2 0.18 MPEG-4 Based Layer Stream
Page 149 and 150: By using our PBNM tool, we allocate
Page 151 and 152: Id Condition Indicator Action 1 Net
Page 153 and 154: The proposed marking algorithm bett
Page 155 and 156: Chapter 6 6 A SIP/MPEG-4 Multimedia
Page 157 and 158: performed by many ways like SLA (Se
Page 159 and 160: 6.1.1.4 SIP Communication Model SIP
Page 161 and 162: • It assign a value (network sess
Page 163 and 164: 6.2.1 SIP2DMIF Subsystem The SIP2DM
Page 165 and 166: Step 1: The MPEG-4 Terminal passes
Page 167 and 168: 1. Set the result C to the empty se
Page 169 and 170: TCP/UDP port, our implementation us
Page 171 and 172: Control & Data Plan Video Rate Cont
Page 173 and 174: characteristics and relevance of ea
Page 175 and 176: References [1] Kazaa Media Desktop
Page 177 and 178: [43] B. Schuster, “Fine granular
Page 179 and 180: [79] D. Bansal and H. Balakrishnan,
Page 181 and 182: [115] N. Laoutaris, I. Stavrakakis,
Page 183 and 184: [154] W. Almesberger, J. H. Salim,
Page 185 and 186: Appendix A A Appendix A: Overview o
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Media aware Delivery unaware ISO/IE
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A.3.3 Scene Description Streams Sce
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This appendix presents structure ex
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