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Introduction to Data Communications

ECI-M-917 http://eent3.lsbu.ac.uk/staff/baoyb/idc

Methods of Teaching and Learning : Lecture, Tutorial and WorkshopAssessment of the unit :2-hour written examination -- 70% a laboratory report (BB submission) -- 30%

Lecturer: Ya Bao and Vincent Siyau.

Textbook: Computer Networks 4/E, by Andrew S. Tanenbaum, Publisher: Prentice-Hall, 2003. ISBN: 0-13-038488-7.

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Available from Blackwell’s, London Road

Benefits of purchasing this book:

• New problems and lab exercises at the end of each chapter helps reinforce concepts presented and pass your exams

• Based on real-world networks and networking challenges, enabling you to apply theory to the types of problems you are most likely to encounter in industry

• Companion Website containing PowerPoint slides and other learning tools

Andrew TanenbaumComputer Networks 4th Edition

e-book is available at: (access from LSBU host) http://0-proquest.safaribooksonline.com.lispac.lsbu.ac.uk/0130661023

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Background Reading(essential for students who lack of

communication background)

Data and Computer Communications 8/E, by W. Stalling, Publisher: Prentice-Hall, 2007.

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Data Communications and Networking 4/E, by B. Forouzan, Publisher: McGraw-Hill, 2006.

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Simplified Communications Model - Diagram

Chapter 1 Introduction

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Communications Tasks

Transmission system utilization

Addressing

Interfacing Routing

Signal generation Recovery

Synchronization Message formatting

Exchange management Security

Error detection and correction

Network management

Flow control

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Networking

• Business Applications

• Home Applications

• Mobile Users

• Social Issues

•Point to point communication not usually practical—Devices are too far apart—Large set of devices would need impractical number of connections

•Solution is a communications network

—Wide Area Network (WAN)

—Local Area Network (LAN)

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Classification of interconnected processors by scale

Classification of interconnected processors by scale.

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ProtocolsUsed for communications between entities in a system

Must speak the same language

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Design Issues for the Layers

• Addressing

• Error Control

• Flow Control

• Multiplexing

• Routing

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Reference Models

The TCP/IP reference model.

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Hybrid Model

The hybrid reference model to be used in this unit.

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Example Networks

• The Internet

• Connection-Oriented Networks: X.25, Frame Relay, and ATM

• Ethernet: 802.3

• Wireless LANs: 802:11Other networks

PSTN (Public Switched Telephone Network)

GSM and UMTS

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IEEE 802 Standards

The 802 working groups. The important ones are marked with *. The ones marked with are hibernating. The one marked with † gave up.

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Metric Units

The principal metric prefixes.