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Understanding High-Speed Networking and Multimedia Systems

This course introduces concepts of high-speed networks using ATM technology for multimedia data delivery and quality service assurance. Topics include multimedia systems, networking basics, computer networks, packet switching, and ATM elements. The course aims to equip students with essential knowledge in these areas.

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Understanding High-Speed Networking and Multimedia Systems

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  1. WRET2104 Pengenalan Kepada Rangkaian Multimedia

  2. Jadual Waktu Kursus • Isnin 9 –10 BK2 (Tutorial) • Rabu 9 – 11 BK2 (Kuliah) • Selasa 10 – 12 Masa konsultasi

  3. Pentaksiran Kursus • Peperiksaan Akhir 50% • Ujian 20% • Tugasan Kumpulan 20% • Tugasan Individu 10%

  4. Rujukan Utama • M.R. Karim, 2000, ATM: Technology and Services Delivery, Prentice Hall • James F. Kurose, 2003, Computer Networking, Addison-Wesley • William Stallings, 2002, High-speed Networks and Internets: Performance and QoS, Prentice Hall • Martin James, 1997, Asynchronous Transfer Mode: ATM architecture and implementation, Prentice Hall

  5. Objektif Kursus • Memahami konsep rangkaian berkelajuan tinggi: ATM • Memahami penggunaan rangkaian berkelajuan tinggi dalam penghantaran fail-fail multimedia • Memastikan perkhidmatan yang berkualiti

  6. Pensyarah Mohamad Nizam Hj Ayub http://fsktm.um.edu.my/~nizam BD22 Tel: 7967 6398 nizam_ayub@um.edu.my

  7. Multimedia • The presentation of a computer application, usually interactive, that incorporates media elements such as text, graphics, video, animation, and sound on a computer. Multimedia melds the sensory power of television with the data manipulation and interactive powers of computer. • A multimedia system is characterized by computer-controlled, integrated production, manipulation,presentation, storage and communication of independent information,which is encoded at least through continuous (time-dependent) and a discrete (time-independent) medium.

  8. Size of Multimedia Data • Text only • Text with Image • Video • Video and audio • Animation

  9. Basic concept of Networking • Connectivity • Link – physical medium • Nodes – computers • Type of connectivity • Point-to-point • Multiple access

  10. What is Computer Networks • a set of computer and/or switches connected by communication links • Many topology possible: • local area networks (LAN) versus wide-area networks (WAN) • many different media: fiber optic, coaxial cable, twisted pair, radio, satellite

  11. Packet Switching • data entering network divided into chunks called "packets'' • packets traversing network share network resources (e.g., link bandwidth, buffers) with other packets • on demand resource use: statistical resource sharing • resources demands may exceed resources available: • e.g., A and B packets arrive at R1, destined for C • resource contention:queueing (waiting), delay

  12. Circuit-Switched Networks • all resources (e.g. communication links) needed by call dedicated to that call for duration • example: telephone network • resource demands may exceed resources available • A and B want to call C • resource contention: blocking (busy signal)

  13. Elements of a Network • communication links: • point-to-point (e.g., A-to-B) • broadcast (e.g.,: Ethernet LAN) • host:computer running applications which use network (e.g.: H1) • router:computer (often w/o applications-level programs) routing packets from input line to output line. (e.g., C) • gateway:a router directly connected to two+ networks (e.g. A) • network: set of nodes (hosts/routers/gateways) within single administrative domain • internet; collection of interconnected networks

  14. Protocols • protocol: rules by which active network elements (applications, hosts, routers) communicate with each other • protocols define : • format/order of messages exchanged • actions taken on receipt of message • rules by which two or more people communicate to provide a service, or to get something done • protocols in every day life:

  15. Brief History of Networking • 1830: telegraph • 1876: telephone (circuit-switching) • 1960's: packet switching • Arpanet has 4 nodes • 1970's: • companies: DECnet, IBM SNA • Arpanet has 100 nodes • 1980's: • local area networks • late 80's: 100 Mbps • proliferation of wide area networks: CSNET, MILNET, NSFNET, ARPANET • Internet passes 100,000 nodes in 1989 • 1990's • Arpanet, NSF retired: gov't no longer provides backbone service • explosive growth: 10 million hosts in 1996 • 150Mbps, 660 Mbps • wireless networks • WWW drives Internet mania • current trends: • continued expansion • commercialization • security

  16. Why need to study on ATM • Label switching • 24 bit Virtual Path Identifier (VPI) & Virtual Channel Identifier (VCI) • Low latency • Fixed cell packets (48 byte data + 5 byte identifier) • High-speed and high-bandwidth • 25.6Mb/s – 622Mb/s • Integrated Network (Generic Network) • All type of services (connection/connectionless, delay sensitive information, fixed/dynamic bit rate) • Bandwidth-on-demand

  17. Open Issue: The future of ATM • ATM as a backbone technology • Qos of ATM guarantees • Further reading • http://www.atmforum.com

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