TITRE Adaptive Packet Video Streaming Over IP Networks - LaBRI

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two H.323 endpoints or between an endpoint and the GK. H.225 specifies the mandatory Q.931 messages that are used for call signaling. Q.931 is actually an ISDNrelated protocol used to set up and clear calls. A Q.931 packet may contain a number of parameters known as information elements. For example, a Q.931 packet may contain a user information element. H.323 specifies that the user information element must contain an H.225 message. All the H.323 parameters are coded in user information element of Q.931 messages • H.245 Control Signaling: it is used to exchange end-to-end control messages governing the operation of the H.323 endpoint. These control messages carry information related to the following: capabilities exchange, opening and closing of logical channels used to carry media streams, flow-control messages and general commands and indications. • T.120 Data interoperability: T.120 is a series of multimedia communications protocols and is the default basis of data interoperability between an H.323 terminal and other terminals. 3.2.5.2.2 IETF Protocols Suite The IETF has defined a set of protocol suitable for packet video application. The latest one is SIP (Session Initiation Protocol) that regroup the majority of others protocols. SIP is an application-layer control and signaling protocol for creating, modifying and terminating sessions with one or more participants. These sessions include IP multimedia conferences, IP telephony calls and multimedia distribution [140]. SIP has been approved in early 1999 as an official standard by the IETF for signaling communications services on the Internet. SIP can be used to initiate sessions as well as invite members to sessions. The SIP architecture includes the following protocols: • RTP (Real-Time Transport Protocol) for transporting real time audio, video and data [110], and RTCP (Real-Time Transport Control Protocol) is the control protocol for RTP, and provides mechanisms for data distribution monitoring, cross media synchronization, and sender identification. The sender transmits a multimedia data stream by using RTP packets. The receiver periodically sends RTCP packets that contain information about the received RTP packets. The information includes feedback and statistics such as the highest sequence number received, inter-arrival jitter, or packet loss rate. • RTSP (Real-Time Streaming Protocol) for setting up and controlling on-demand media streams [145]. RTSP is used for initiating and controlling delivery of stored and live multimedia content to both unicast and multicast destinations. RTSP borrows time concept from MPEG-2 DSM-CC, but unlike DSM-CC, it does not depend on an entire set of supporting protocols. RTSP is transport-independent, and can use either 60
TCP or UDP as the transport protocol. The state machine makes RTSP suitable for remote digital editing and retrieval. RTSP is also text-based protocol, and therefore easy to parse. RTSP reuses the HTTP concept, but unlike HTTP, RTSP is a state full protocol. • MGCP (Media Gateway Control Protocol) and Megaco for controlling media gateways [146]. • SDP (Session Description Protocol) for describing multimedia sessions [141]. SDP is intended for describing multimedia sessions for the purposes of session announcement, session invitation, and other forms of multimedia session initiation. The purpose of SDP is to convey information about media streams in multimedia sessions to allow the recipients of a session description to participate in the session. Therefore terminal capability is described by SDP. • SAP (Session Announcement Protocol) for announcing multicast session [147]. SAP is used to assist the advertisement of multicast multimedia conferences and other multicast sessions, and to communicate the relevant session setup information to prospective participants. SAP announces a multicast session by multicasting packets periodically a well-known multicast group. The packets contain a description of the session using SDP. • TRIP (Telephony Routing over IP) for locating the best gateway between the Internet and the PSTN (Public Switched Telephone Network) [148]. • Suite of resources management and multicast address allocation protocols. 3.2.5.2.3 ISO/IEC 14496-6 (MPEG-4 DMIF) MPEG-4 DMIF [144] is the control plane of MPEG-4 Delivery layer that allows applications to transparently access and view multimedia streams whether the source of the stream is located on an interactive remote end-system, the stream is available on broadcast media or is located on stored media. DMIF framework covers three major technologies: (1) interactive network technology, (2) broadcast technology and (3) the disk technology. An application accesses data through the DAI irrespectively whether such data comes from a broadcast source, from local storage or from remote server. In all scenarios the Local Application only interacts through DAI primitives. 61
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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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Page 32 and 33: La valeur R TCP représente le déb
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Page 36 and 37: Telles que illustrés par la Figure
Page 38 and 39: 3. DMIF2SIP vérifie si son propre
Page 40 and 41: utilisée optionnellement pour loca
Page 42 and 43: Chapter 2 2 Introduction 2.1 Motiva
Page 44 and 45: conditions. Based on end-to-end fee
Page 46 and 47: Chapter 3 3 Related Work Nowadays,
Page 48 and 49: • multicasting: it takes the stre
Page 50 and 51: expensive, fixed delivery and recep
Page 52 and 53: 3.1.6 Static vs. Dynamic Channels T
Page 54 and 55: environment because they require a
Page 56 and 57: H.261 is called video codec for aud
Page 58 and 59: VideoScene (VS) VideoObject (VO) Vi
Page 60 and 61: The emphasis of MPEG-7 will be the
Page 62 and 63: Temporal scalability involves parti
Page 64 and 65: multitude of streams. It can switch
Page 66 and 67: increased linearly in the absence o
Page 68 and 69: 3.2.2.1 End-to-End Retransmission R
Page 70 and 71: correctly received block. The missi
Page 72 and 73: epresent user traffic. The delay ca
Page 74 and 75: 3.2.5 IP Signaling Protocols for Pa
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Page 81 and 82: 4.1.1 Video Classification Model Pr
Page 83 and 84: attributes can refer to the QoS par
Page 85 and 86: In RBF, 2 D = X − is the distance
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Page 95 and 96: the same value. This timing informa
Page 97 and 98: 4.2.2.1 Fragmentation We propose to
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Page 101 and 102: When G is used as generator matrix,
Page 103 and 104: 4.2.3 Performance Evaluation Intens
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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
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Page 115 and 116: VO1 VO2 AVO Scenario Audio BL EL1 E
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Page 125 and 126: Chapter 5 5 A Dynamic Packet Video
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The TCM algorithm is based on a tok
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BEGIN Initialize the classification
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User Profile (Token Bucket) Traffic
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5.3.3 QoS Management Algorithm Spec
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Figure 5-7: Hierarchical aggregatio
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• Filters: to put packets into cl
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mechanism associated with the Drop
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Figure 5-16: Packets loss with IP D
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5.5.2.3 Experimental Results Figure
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1 MPEG-4 Based Layer Stream -AF11 M
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0.2 0.18 MPEG-4 Based Layer Stream
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By using our PBNM tool, we allocate
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Id Condition Indicator Action 1 Net
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The proposed marking algorithm bett
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Chapter 6 6 A SIP/MPEG-4 Multimedia
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performed by many ways like SLA (Se
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6.1.1.4 SIP Communication Model SIP
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• It assign a value (network sess
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6.2.1 SIP2DMIF Subsystem The SIP2DM
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Step 1: The MPEG-4 Terminal passes
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1. Set the result C to the empty se
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TCP/UDP port, our implementation us
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Control & Data Plan Video Rate Cont
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characteristics and relevance of ea
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References [1] Kazaa Media Desktop
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[43] B. Schuster, “Fine granular
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[79] D. Bansal and H. Balakrishnan,
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[115] N. Laoutaris, I. Stavrakakis,
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[154] W. Almesberger, J. H. Salim,
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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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