Abstract
ATM, the Asynchronous Transfer Mode cell-based switching technique, was finally recognized in 1992 by the relevant International standardization entities, as the switching and multiplexing solution for implementing the future Broadband Integrated Services Digital Network (B-ISDN). Because of its service-independent characteristics. ATM will provide B-ISDN with capabilities for integrated support of a wide range of services in a very flexible and efficient way. Transmission of multimedia services in the B-ISDN is currently being addressed by several Study Groups of ITU-T and ETSI. In addition to identifying the required network capabilities and to defining the functional model of multimedia services in the B-ISDN, the possible alternatives for performing the multiplexing operation of the different components of a multimedia application are also being evaluated. The MPEG2 standard (ISO/EEC 13818), which is now in its final phase of specification, is being accepted worldwide as the appropriate coding technique to implement almost all types of video applications and multimedia services involving good-quality full-motion video. It seems therefore important to evaluate the alternatives for performing the multiplexing operation of the elementary components of an MPEG2-based multimedia application over ATM networks. In fact, different Study Groups of both ITU-T and ETSI, as well as the ATM Forum, are now evaluating alternatives for mapping MPEG2 streams into ATM cells.
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Abbreviations
- Vocabulary and abbreviations:
-
Access Unit — coded representation of an elementary stream presentation unit. In the case of video, an access unit is the coded representation of a picture. In the case of audio, is the coded representation of an audio frame
- ALL:
-
ATM Adaptation Layer
- ATM:
-
Asynchronous Transfer Mode
- CA:
-
Channel Adapter
- CLP:
-
Cell Loss Priority
- MPEG:
-
Motion Picture Experts Group
- Packetizer:
-
a functional block which builds packets from a raw elementary stream, including control information in the packet header.
- PES:
-
Packetized Elementary Streams
- PID:
-
Packet IDentification
- PS:
-
Program Stream
- QOS:
-
Quality of Service
- TS:
-
Transport Stream
- VC:
-
Virtual Channel
- VCI:
-
Virtual Channel Identifier
References
ISO/IEC: Information Technology — Generic Coding of Moving Pictures and associated Audio information — Part 1: Systems ISO/IEC DIS 13818-1 (1994)
ISO/IEC: Information Technology — Generic Coding of Moving Pictures and associated Audio — Part 2: Video, Recommendation H.262 ISO/IEC DIS 13818-2 (1994)
ITU-T SG XVIII: IVS Baseline Document (1992)
ITU-T SG XV: Status Report on ATM Video Coding Standardization, Issue3 (1992)
ITU-T SGXV: Multimedia multiplexing method for audiovisual communication Doc. AVC-370 (1992)
ISO/IEC JTC1/SC29/WG11: ATM mappings of Transport Layer Packets (1993)
ISO/IEC JTC1/SC29/WG11/MPEG93/645 Preliminary studies into ATM mapping of MPEG2 Transport Layer packets (1993)
ATM Forum/93-1016: Recovery of the MPEG2 system clock over ATM (1993)
ATM Forum/93-976: ATM multimedia System Structure (1993)
ISO/IEC JTC1/SC29/WG11/MPEG93/750 MPEG2 Transport Packet transmission over ATM (1993)
ATM Forum/93: MPEG in ATM networks and a proposal for a VBR Video Adaptation Layer: AAL6 (1994)
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© 1994 Springer-Verlag Berlin Heidelberg
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Andrade, T., Alves, A.P. (1994). Transmission of MPEG2 applications over ATM networks. In: Hutchison, D., Danthine, A., Leopold, H., Coulson, G. (eds) Multimedia Transport and Teleservices. COST237 1994. Lecture Notes in Computer Science, vol 882. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-58759-4_42
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DOI: https://doi.org/10.1007/3-540-58759-4_42
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