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% Ujian20% Tugasan Kumpulan20% Tugasan Individu10%

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

Objektif Kursus 1. Memahami konsep rangkaian berkelajuan tinggi: ATM 2. Memahami penggunaan rangkaian berkelajuan tinggi dalam penghantaran fail-fail multimedia 3. Memastikan perkhidmatan yang berkualiti

Pensyarah Mohamad Nizam Hj Ayub BD22 Tel:

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.

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

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

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

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

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)

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

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:

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 's Arpanet, NSF retired: gov't no longer provides backbone service explosive growth: 10 million hosts in Mbps, 660 Mbps wireless networks WWW drives Internet mania current trends: continued expansion commercialization security

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

Open Issue: The future of ATM ATM as a backbone technology Qos of ATM guarantees Further reading