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PREAMBLE OF DATA COMMUNICATION NETWORKS

PREAMBLE OF DATA COMMUNICATION NETWORKS. PREAMBLE STRUCTURE HOLLISTIC FIX KEY CONCEPT KEY RESEARCH AREA KEY APPLICATION INDUSTRIAL APPLICATION RESEARCH HOW WE STUDY KEY JOBS PROJECTS ONE CAN DO TRENDS. INDEX. PREMBLE STRUCTURE. 1. NAME OF THE INSTRUCTOR-Mayuri Kulshreshtha

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PREAMBLE OF DATA COMMUNICATION NETWORKS

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  1. PREAMBLE OFDATA COMMUNICATION NETWORKS

  2. PREAMBLE STRUCTURE • HOLLISTIC FIX • KEY CONCEPT • KEY RESEARCH AREA • KEY APPLICATION • INDUSTRIAL APPLICATION • RESEARCH • HOW WE STUDY • KEY JOBS • PROJECTS ONE CAN DO • TRENDS INDEX

  3. PREMBLE STRUCTURE

  4. 1. NAME OF THE INSTRUCTOR-Mayuri Kulshreshtha 2. CABIN LOCATION-Room No.307 3. TELEPHONENO.-9927788681 4. EMAIL-ID-mayuri.kulsh@gmail.com 5. MEETING HOURS– 1 hour in break TEACHERS INTRODUCTION

  5. PREREQUISITES • Basic Knowledge of Computers and Communication • (Before 12th standard) • (12th standard) • Basic Knowledge of communication. • Basic Knowledge of algorithm. • knowledge of computer S/W and H/W HOLLISTIC FIX OF DATA COMMUNICATION NETWORKS

  6. PRE REQISTES 1ST SEMESTER • COMPUTER CONCEPTS -Introduction to any Operating System -Concept of an algorithm -Structured Programming 3rd Semester • Switching Theory and Logic Design (STLD) - Number system -binary codes -Error correction and detection HOLLISTIC FIX………Continued

  7. PRE REQUISTES (5thSemester) • Basic Principles of Communication • -PCM Coding • -Fundamentals of Time Division Multiplexing • -Error Control Coding • Basic knowledge Microprocessors and Applications -Evolution of Microprocessors -History of computers -Timing and control -Serial Data transfer (USART 8251) HOLLISTIC FIX………Continued

  8. PRE REQUISTES (7th SEM) • Basic knowledge of Electronic switching -Switching methods -Routing -National numbering Plan -ATM -Traffic Engineering -Types of switches HOLLISTIC FIX OF DCN………Continued

  9. PRE REQUISTES (7th SEM) • Basic knowledge of satellite communication -Multiple Access techniques -Broadcasting methods -Error control for digital satellite links -Propagation effects HOLLISTIC FIX OF DCN………Continued

  10. PRE REQUISTES (7th SEM) • Basic knowledge of Optical Fiber Communication -Transmission Characteristics of Optical fiber. -Optical Sources -Optical detectors HOLLISTIC FIX OF DCN………Continued

  11. SCOPE IN RELATED FIELDS… • Mobile Communication • Wireless Technologies • Computer networking • Telecommunication Switching • Internet • Network security HOLLISTIC FIX OF DCN…….Continued

  12. COMMUNICATION –Sharing or transfer of information . Which may be: -Face to Face -At some distance KEY CONCEPTS RELATED TO DCN

  13. KEY CONCEPTS RELATED TO DCN TX TXmission system RX destination source SOURCE SYSTEM DESTINATION SYSTEM

  14. Key concept of data communication Data communication is the exchange of data between two devices via some form of transmission media . Communicating devices must be part of communication system Communication system is made up of combination of H/W & S/W.

  15. What is Information? Also watch-- http://nptel.iitm.ac.in/showVideo.php?v=nvmo9voRiSs

  16. Transmission Path & Repeater • Main cause for degradation of pulse is noise • Regenerative repeaters are used to get the pulse in its original form

  17. The rules and conventions used in the conversation are collectively known as the protocol • Basically, a protocol is an agreement between the communicating parties on how communication is to proceed. PROTOCOL

  18. In information technology, a protocol (from the Greek protocollon, which was a leaf of paper glued to a manuscript volume, describing its contents) is the special set of rules that end points in a telecommunication connection use when they communicate

  19. Protocols exist at several levels in a telecommunication connection. For example, there are protocols for the data interchange at the hardware device level and protocols for data interchange at the application program level. In the standard model known as Open Systems Interconnection (OSI), there are one or more protocols at each layer in the telecommunication exchange that both ends of the exchange must recognize and observe.

  20. Protocols are often described in an industry or international standard An agreed-upon format for transmitting data between two devices. The protocol determines the following: · the type of error checking to be used data compression method, if any

  21. COMUTER NETWORKS • A large number of separate but interconnected computers to do the particular job are called computer networks. A N/W WITH TWO CLIENTS AND ONE SERVER

  22. NETWORK STRUCTURE • According to type of connection • -Point to Point • -Multipoint link station station Mainfr-ame

  23. MESH • RING • STAR • BUS • HYBRID Network topologies

  24. Network architecture-A set of layers and protocols is called a network architecture Network ARCHITECTURE

  25. The first computer networks were designed with the hardware as the main concern and the software as an afterthought. This strategy no longer works. Network software is now highly structured. We examine the software structuring technique in some detail.

  26. ROUTING • When there are multiple paths between source and destination, a route must be chosen. This is called ROUTING • Different Routing Algorithm are: • Shortest Path • Bellman Ford • Link state routing • Broadcasting

  27. The objective of the switching is to identify switching candidates to eliminate or reduce system overloads. • Three types of switching methods are: • Message switching • Circuit Switching • Packet Switching SWITCHING

  28. Connection Oriented Service • Connection Less Service Services

  29. Multiplexing

  30. Synchronization Transmitter & receiver section of the Communication Equipment should behave sequentially

  31. Error Control Coding Coding is done to remove the interference CHARLIE TO ALPHA!!!!!! CHARLIE TO ALPHA!!!!!!! The interference can cause the distortion of data. Once the coding is done, data becomes error free & can be detected uniquely

  32. Research areas in cluster of DC: • Fast Multiple Access more than the speed of light. • To reduce the complexity present in the ISO-OSI model. • To use better transmission media and interface for data communication • To increase the Channel Capacity KEY RESEARCH AREA OF DATA COMMUNICATION NETWORKS

  33. Key Jobs & Companies PRIVATE SECTOR  Texas Instruments www.ti.com Alcatel Lucent.www.alcatel-lucent.inNSNwww.nokiasiemensnetworks.comST microelectronicswww.st.comReliance Communications www.relianceinfo.comBharti Airtelwww.airtel.in

  34. Electronics Corporation of India Limited. www.ecil.co.in Bharat Electronics Limited. www.bel-india.com Hindustan Aeronautics Limited. www.hal-india.com Defense Research & Development Organization. www.drdo.org Bharat Sanchar Nigam Limited. www.bsnl.co.in PUBLIC SECTOR JOBS

  35. HOW WE STUDY......?

  36. Kit based Projects: • ELECTRONICS & EMBEDDED SYSTEM RELATED - PROJECTS IN THE AREAS OF EMBEDDED SYSTEMS Wireless based Projects: • Designing robust collaborative services in distributed wireless networks • Wireless GPRS services • GSM BASE HOME SECUIRTY SYSTEM Project based on network security: • Design of network security projects using honeypots PROJECTS IN Data COMMUNICATION networks

  37. March 10, 1876- Telephone by Graham Bell Early 1900’s- Teletypewriter 1960- Character coding in the form of 8bit character 1967- Voice Digitization technique- PCM 1969-Caterphone TRENDS IN DCn

  38. TRENDS IN DCn

  39. 1974- Data phone Digital Services 1980-Dial Modem Technology (FAX) 1984-Client Server Architectures 1990’s- VPN Trends Continued

  40. Till date- Broadband ISDN, Cell based transmission, Satellite & GPS, VOIP, Video Confrencing Future Trends- High Speed communication across the galaxies Breaking the Shannon Limit Trends….. continued

  41. THANK YOU

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