| Preface | p. xv |
| Computer Communications Networks - Introduction | p. 1 |
| Main Components | p. 2 |
| The Computer System | p. 2 |
| The Communications System | p. 3 |
| The Networking System | p. 4 |
| Network Development Example | p. 5 |
| Three Role Players | p. 5 |
| Network Design | p. 6 |
| Standardization | p. 9 |
| Example 1 - Communication of Voice | p. 9 |
| Example 2 - File Transfer | p. 10 |
| Classification of Networks | p. 12 |
| Local Area Networks (LANs) | p. 12 |
| Wide Area Networks (WANs) | p. 12 |
| Metropolitan Area Networks (MANs) | p. 13 |
| Network Protocol Architecture | p. 13 |
| Protocols | p. 13 |
| Standards | p. 13 |
| Protocol Architecture | p. 14 |
| Example of a Protocol Architecture | p. 14 |
| Open System | p. 15 |
| Summary | p. 15 |
| Review Questions | p. 16 |
| Network Architectures - Examples | p. 17 |
| The OSI Reference Model (OSI-RM) | p. 18 |
| OSI-RM Characteristics and Terminology | p. 18 |
| Communications Model within an OSI Node | p. 19 |
| Communications Across the OSI Network | p. 22 |
| Inter-layer communication | p. 23 |
| OSI-RM Layer Definitions and Functions | p. 25 |
| The TCP/IP Protocol Suite | p. 36 |
| The Internet Protocol (IP) | p. 39 |
| The Transmission Control Protocol (TCP) | p. 40 |
| The Application Protocols for the Internet | p. 41 |
| Lower Layers of the Internet | p. 41 |
| The IEEE Wireless Local Area Network (IEEE WLAN) | p. 42 |
| Local Area Networks | p. 42 |
| Wireless Local Area Networks | p. 43 |
| The Physical Layer (PHY) | p. 45 |
| The Medium Access Control (MAC) Layer | p. 46 |
| Framework for Studying a Protocol | p. 47 |
| Standardization of Protocols | p. 48 |
| International Telecommunications Union (ITU) | p. 49 |
| The Internet Society | p. 49 |
| International Organization for Standardization (ISO) | p. 50 |
| European Telecommunications Standards Institute (ETSI) | p. 50 |
| American National Standard Institute (ANSI) | p. 50 |
| Institute of Electrical and Electronic Engineers (IEEE) | p. 51 |
| Summary | p. 52 |
| Review Questions | p. 53 |
| Network and User Data | p. 55 |
| The Network Data | p. 56 |
| The Physical Layer Data | p. 57 |
| Sequence of Events and Definitions | p. 57 |
| Modulation of data and signals | p. 67 |
| Digital Encoding of Data | p. 70 |
| Non-Return to Zero (NRZ) | p. 71 |
| Multilevel Encoding | p. 72 |
| Manchester Coding | p. 73 |
| General Characteristics of Bit Encoding | p. 74 |
| Zero-substitution and nB/NB Translation | p. 75 |
| Passband Modulation | p. 76 |
| The Carrier Signal | p. 76 |
| Analog Modulation | p. 77 |
| Digital Modulation | p. 80 |
| Amplitude Shift Keying (ASK) | p. 80 |
| Frequency Shift Keying (FSK) | p. 81 |
| Phase Shift Keying (PSK) | p. 82 |
| The User Data | p. 84 |
| Digital Transmission of Voice | p. 84 |
| The Sampling Theorem | p. 85 |
| Pulse Coded Modulation (PCM) | p. 85 |
| Delta Modulation | p. 91 |
| Text and Numerical Data | p. 93 |
| ASCII (American National Standard Code for Information Interchange) | p. 94 |
| ISO 8859-1 (ISO Latin -1) | p. 95 |
| UCS (Universal multiple-octet coded Character Set) | p. 96 |
| Summary | p. 98 |
| Review Questions | p. 99 |
| The Physical Layer | p. 101 |
| Channel Impairments | p. 102 |
| Signal Attenuation | p. 102 |
| Delay Distortion | p. 104 |
| Noise | p. 105 |
| Multipath | p. 106 |
| Transmission Media | p. 107 |
| Cables in data communications | p. 108 |
| Twisted Pair Copper Cables | p. 108 |
| Co-axial Cable | p. 110 |
| Optical Fiber Cable (OFC) | p. 111 |
| The Wireless Media | p. 111 |
| Characteristics | p. 112 |
| Examples of Wireless Bands | p. 112 |
| Physical Layer Protocol Example: EIA-232-F | p. 113 |
| Mechanical Characteristics | p. 114 |
| Electrical Characteristics | p. 116 |
| Functional Characteristics | p. 116 |
| Procedural Characteristics | p. 118 |
| PHY for IEEE Wireless Local Area Network | p. 121 |
| WLAN Types | p. 122 |
| Frequency Hopping Spread Spectrum (FH-SS) for 2.4 GHz Specification | p. 123 |
| Direct Sequence Spread Spectrum (DS-SS) for 2.4 GHz Specification | p. 126 |
| Infrared PHY for IEEE WLAN | p. 127 |
| The Integrated Services Digital Network (ISDN) PHY | p. 128 |
| Review Questions | p. 130 |
| Data Link Control Layer Functions and Procedures | p. 131 |
| Data Link Layer Functions | p. 132 |
| Synchronization | p. 132 |
| Addressing Modes | p. 132 |
| Connection setup and termination | p. 133 |
| Error Control | p. 133 |
| Flow Control | p. 133 |
| Link Control and Testing | p. 133 |
| Multiplexing | p. 134 |
| Synchronization | p. 134 |
| Synchronous Transmission | p. 134 |
| Asynchronous Transmission | p. 136 |
| Connection Setup and Termination | p. 139 |
| Addressing | p. 140 |
| Error Control | p. 142 |
| Parity bit | p. 144 |
| Block Error Check | p. 146 |
| The Cyclic Redundancy Check (CRC) | p. 146 |
| Flow Control | p. 156 |
| Stop-and-Wait (SnW) Flow Control | p. 156 |
| The Sliding-windows (SW) Flow Control Mechanism | p. 158 |
| Link Utilization of Window Flow Control Mechanisms | p. 162 |
| Full-duplex Communications Using Window Flow Control | p. 163 |
| Flow Control Based Error Recovery Mechanisms | p. 164 |
| Stop-and-Wait ARQ | p. 164 |
| Go-Back-N ARQ | p. 165 |
| Selective Reject ARQ | p. 166 |
| Maximum Window Size | p. 167 |
| Link Control and Testing | p. 168 |
| Review Questions | p. 169 |
| Data Link Control Layer Protocol Examples | p. 171 |
| HDLC (High-level Data Link Control) Protocol | p. 172 |
| HDLC Frame Types | p. 172 |
| HDLC station types | p. 176 |
| Primary station | p. 176 |
| Secondary station | p. 176 |
| Combined stations | p. 176 |
| Operation modes | p. 176 |
| Normal Response Mode (NRM) | p. 176 |
| Asynchronous Balanced Mode (ABM) | p. 176 |
| Asynchronous Response Mode (ARM) | p. 177 |
| Extended Modes | p. 177 |
| The HDLC Frame | p. 177 |
| Flag | p. 177 |
| Address Field | p. 177 |
| Frame Check Sequence (FCS) | p. 178 |
| HDLC Protocol Operation | p. 178 |
| Selection of Timeout | p. 179 |
| Connection Setup and Termination | p. 179 |
| Data Exchange | p. 180 |
| Asynchronous Transfer Mode (ATM) Protocol | p. 185 |
| The ATM Cell | p. 186 |
| ATM Protocol Procedures | p. 191 |
| Virtual circuit and the frame relay protocol | p. 191 |
| Error Control | p. 192 |
| Medium Access Control (MAC) Layer for IEEE Wireless LANs | p. 193 |
| Random Access in LANs | p. 194 |
| Collision Avoidance | p. 195 |
| The Distributed Coordination Function (DCF) | p. 196 |
| MAC Frame Structure | p. 197 |
| MAC Frame Types | p. 198 |
| Review Questions | p. 200 |
| Multiplexing and Carrier Systems | p. 201 |
| Analog and Digital Transmissions | p. 202 |
| Analog and Digital Multiplexing | p. 202 |
| Frequency Division Multiplexing (FDM) | p. 203 |
| Frequency Division Duplexing (FDD) | p. 204 |
| Time Division Multiplexing (TDM) | p. 205 |
| Synchronous TDM | p. 205 |
| Statistical TDM | p. 206 |
| Statistical Versus Synchronous TDM | p. 208 |
| The TDM Switch | p. 209 |
| Digital Carrier Systems | p. 211 |
| The DS-1 Carrier System | p. 212 |
| Total Bit Rate | p. 213 |
| Signaling Information | p. 213 |
| Problems with T-1/E-1 Systems | p. 214 |
| Synchronous Optical Network/ Synchronous Digital Hierarchy | p. 215 |
| Digital Subscriber's Line (DSL) | p. 217 |
| 8.1. Integration With Telephone | p. 218 |
| Multiplexing at higher layers | p. 218 |
| Multiple Protocols Per Layer With Connection-oriented Mode | p. 219 |
| Multiple Connections Per Protocol | p. 220 |
| Review Questions | p. 222 |
| The Network and Higher Layer Functions | p. 223 |
| The Network Layer | p. 224 |
| Typical Functions of Network layer | p. 225 |
| Connectionless Network Layers | p. 225 |
| Connection-oriented Mode | p. 229 |
| The End-to-end Layers | p. 230 |
| X.25 Packet Layer Protocol | p. 232 |
| X.25 Packet Types | p. 233 |
| Review Questions | p. 236 |
| Performance Models for Data Networks | p. 237 |
| The Network Performance | p. 238 |
| Performance of the Physical Layer Protocols | p. 239 |
| Performance Improvement at PHY | p. 240 |
| Data Link Layer Performance | p. 242 |
| Flow Control Procedures | p. 243 |
| Error Control Procedures | p. 246 |
| Performance of the MAC Sublayer | p. 248 |
| Performance of the network and higher layers | p. 249 |
| Connectionless and Connection-oriented Protocols | p. 250 |
| QoS Differentiation in Connectionless Protocols | p. 252 |
| Performance of End-to-end Protocols | p. 254 |
| System Simulation for Performance Prediction | p. 255 |
| What is Simulation? | p. 255 |
| Designing a Simulation Program Versus Using a Package | p. 257 |
| Performance of Wireless and Mobile Networks | p. 257 |
| The Wireless Network Channel | p. 258 |
| Resource Management in Wireless Networks | p. 262 |
| Mobility Management in Mobile Networks | p. 264 |
| Review Questions | p. 266 |
| References | p. 267 |
| Index | p. 273 |
| Table of Contents provided by Syndetics. All Rights Reserved. |
