TITRE Adaptive Packet Video Streaming Over IP Networks - LaBRI

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SIP UAC DMIF-SIP IWF DNI (1) INVITE (2) DS_SessionSetupRequest (3) 100 TRYING (4) DS_SessionSetupConfirm DAI MPEG-4 (5) DS_ServiceAttachRequest (7) DS_ServiceAttachConfirm Connect to the application running the service (6) (8) 200 OK (9) ACK (10) DS_ChannelAddRequest (12) Media Channel (RTP) Addition of channels (11) User A User B Figure 6-8: SIP2DMIF interworking Step 8: SIP2DMIF IWF sends a 200 OK message back to SIP User A. The 200 OK Response notifies SIP User A that the connection has been made. This message contains also the intersection of the two terminals capabilities. If there is no support media between the two terminals a 400 Bad Request response with 304 Warning header field is sent. Step 9: SIP User A sends an ACK to DMIF-SIP IWF Step 10: By receiving the ACK Media channel must be done. For this fact, a DS_ChannelAddRequest is sent to DNI of MPEG-4 Terminal. Step 11: The MPEG-4 Terminal notifies the creation of the requested channels. Step 12: When RTP channel is opened between SIP User A and DMIF User B, media can flows and videoconferencing can begin. 6.2.2 DMIF2SIP Subsystem The DMIF2SIP subsystem of the DMIF-SIP IWF is the part of the IWF that terminates and originates DMIF signaling from and to DMIF network respectively. We call this function DMIF2SIP (DMIF to SIP) signaling. The DMIF2SIP signaling allows a MPEG-4 DMIF terminal to call SIP UAC. Processing steps for establishing connection between an MPEG-4 DMIF terminal and a SIP terminal are illustrated in Figure 6-9 and explained in the following: 148
Step 1: The MPEG-4 Terminal passes a DA_ServiceAttach() primitive indicating the User B address (email address, phone number, etc.). DNI layer assigns a local session to this request. Step 2: DNI Layer sends a DS_SessionSetupRequest to DMIF2SIP IWF to establish a network session with SIP terminal. Step 3: Upon receiving the Session establishment request, the DMIF2SIP IWF sends an INVITE message to SIP Terminal to participate in videoconferencing. The INVITE request contains: a). The address of User B is inserted in the Request-URI field in the form of SIP URL b). User A address is recognized as the call session initiator in the From field. c). DMIF2SIP checks whether its own address is contained in the Via field (to prevent loops), otherwise, it copies it own address in Via filed. d). DMIF2SIP IWF create a unique numeric identifier which is assigned to the call and is inserted in the Call-ID field. e). The transaction number within a single call leg is identified in the CSeq filed. f). The Media capability User A (DMIF terminal) is ready to receive is transformed to form a SDP message. MPEG-4 DAI DNI DMIF2SIP IWF SIP UAC (1) the application initiates the service (2) DS_SessionSetupRequest (3) INVITE (4) 200 OK (5) DS_SessionSetupConfirm (6) DS_ServiceAttachRequest (7) DS_ServiceAttachConfirm (8) the application request a new channel (9) DS_ChannelAddRequest (10) ACK (11) Media Channel (RTP) User A User B Figure 6-9: DMIF2SIP interworking 149
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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
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In RBF, 2 D = X − is the distance
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Figure 4-6: Experiment testbed In t
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190 180 170 End-to-end delay MPEG-4
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Sync Layer. The SL-packetized strea
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conveyed by MIME format parameters
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the same value. This timing informa
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4.2.2.1 Fragmentation We propose to
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Timestamp: Indicates the sampling i
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When G is used as generator matrix,
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4.2.3 Performance Evaluation Intens
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0.3 0.25 our proposal classical app
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lost packet at the receiver. Conseq
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marking scheme. The server must be
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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
Page 135 and 136: Figure 5-7: Hierarchical aggregatio
Page 137 and 138: • Filters: to put packets into cl
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: 6.2.1 SIP2DMIF Subsystem The SIP2DM
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
Page 187 and 188: Media aware Delivery unaware ISO/IE
Page 189 and 190: A.3.3 Scene Description Streams Sce
Page 191: This appendix presents structure ex
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