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WRET2104

WRET2104. Pengenalan Kepada Rangkaian Multimedia. Jadual Waktu Kursus. Isnin 9 –10 BK2 (Tutorial) Rabu 9 – 11 BK2 (Kuliah) Selasa 10 – 12 Masa konsultasi. Pentaksiran Kursus. Peperiksaan Akhir 50% Ujian 20% Tugasan Kumpulan 20% Tugasan Individu 10%. Rujukan Utama.

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WRET2104

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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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