Network Performance Analysis / Edition 1

Network Performance Analysis / Edition 1

ISBN-10:
1848213123
ISBN-13:
9781848213128
Pub. Date:
11/01/2011
Publisher:
Wiley
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Overview

Network Performance Analysis / Edition 1

The book presents some key mathematical tools for the performance analysis of communication networks and computer systems.
Communication networks and computer systems have become extremely complex. The statistical resource sharing induced by the random behavior of users and the underlying protocols and algorithms may affect Quality of Service.
This book introduces the main results of queuing theory that are useful for analyzing the performance of these systems. These mathematical tools are key to the development of robust dimensioning rules and engineering methods. A number of examples illustrate their practical interest.

Product Details

ISBN-13: 9781848213128
Publisher: Wiley
Publication date: 11/01/2011
Series: ISTE Series , #579
Pages: 253
Product dimensions: 6.40(w) x 9.30(h) x 1.10(d)

Table of Contents

Preface xi

Chapter 1 Introduction 1

1.1 Motivation 1

1.2 Networks 2

1.3 Traffic 3

1.4 Queues 5

1.5 Structure of the book 5

1.6 Bibliography 6

Chapter 2 Exponential Distribution 9

2.1 Definition 9

2.2 Discrete analog 10

2.3 An amnesic distribution 12

2.4 Minimum of exponential variables 13

2.5 Sum of exponential variables 15

2.6 Random sum of exponential variables 16

2.7 A limiting distribution 16

2.8 A "very" random variable 17

2.9 Exercises 18

2.10 Solution to the exercises 20

Chapter 3 Poisson Processes 23

3.1 Definition 23

3.2 Discrete analog 25

3.3 An amnesic process 27

3.4 Distribution of the points of a Poisson process 28

3.5 uperposition of Poisson processes 29

3.6 Subdivision of a Poisson process 30

3.7 A limiting process 30

3.8 A'Very" random process 30

3.9 Exercises 31

3.10 Solution to the exercises 32

Chapter 4 Markov Chains 35

4.1 Definition 36

4.2 Transition probabilities 36

4.3 Periodicity 37

4.4 Balance equations 38

4.5 Stationary measure 38

4.6 Stability and ergodicity 39

4.7 Finite state space 40

4.8 Recurrence and transience 41

4.9 Frequency of transition 42

4.10 Formula of conditional transitions 43

4.11 Chain in reverse time 43

4.12 Reversibility 44

4.13 Kolmogorov's criterion 46

4.14 Truncation of a Markov chain 47

4.15 Random walk 49

4.16 Exercises 51

4.17 Solution to the exercises 52

Chapter 5 Markov Processes 57

5.1 Definition 57

5.2 Transition rates 58

5.3 Discrete analog 59

5.4 Balance equations 60

5.5 Stationary measure 61

5.6 Stability and ergodicity 61

5.7 Recurrence and transience 63

5.8 Frequency of transition 63

5.9 Virtual transitions 64

5.10 Embedded chain 66

5.11 Formula of conditional transitions 68

5.12 Process in reverse time 68

5.13 Reversibility 70

5.14 Kolmogorov's criterion 70

5.15 Truncation of a reversible process 71

5.16 Product of independent Markov processes 73

5.17 Birth-death processes 74

5.18 Exercises 78

5.19 Solution to the exercises 78

Chapter 6 Queues 87

6.1 Kendall's notation 87

6.2 Traffic and load 88

6.3 Service discipline 90

6.4 Basic queues 91

6.5 A general queue 97

6.6 Little's formula 99

6.7 PASTA property 101

6.8 Insensitivity 101

6.9 PoUaczek-Khinchin's formula 102

6.10 The observer paradox 105

6.11 Exercises 108

6.12 Solution to the exercises 111

Chapter 7 Queuing Networks 119

7.1 Jackson networks 119

7.2 Traffic equations 120

7.3 Stationary distribution 122

7.4 Musta property 124

7.5 Closed networks 125

7.6 Whittle networks 127

7.7 Kelly networks 129

7.8 Exercises 131

7.9 Solution to the exercises 133

Chapter 8 Circuit Traffic 141

8.1 Erlang's model 141

8.2 Erlang's formula 142

8.3 Engset's formula 145

8.3.1 Model without blocking 146

8.3.2 Model with blocking 147

8.4 Erlang's waiting formula 149

8.4.1 Waiting probability 149

8.4.2 Mean waiting time 150

8.5 The multiclass Erlang model 151

8.6 Kaufman-Roberts formula 154

8.7 Network models 155

8.8 Decoupling approximation 157

8.9 Exercises 157

8.10 Solutions to the exercises 160

Chapter 9 Real-time Traffic 167

9.1 Flows and packets 167

9.2 Packet-level model 168

9.3 Flow-level model 171

9.4 Congestion rate 173

9.5 Mean throughput 174

9.6 Loss rate 176

9.7 Multirate model 177

9.8 Recursive formula 179

9.9 Network models 179

9.10 Gaussian approximation 181

9.11 Exercises 183

9.12 Solution to the exercises 185

Chapter 10 Elastic Traffic 191

10.1 Bandwidth sharing 191

10.2 Congestion rate 194

10.3 Mean throughput 195

10.4 Loss rate 197

10.5 Multirate model 199

10.6 Recursive formula 202

10.7 Network model 204

10.8 Exercises 205

10.9 Solution to the exercises 208

Chapter 11 Network Performance 215

11.1 IP access networks 215

11.1.1 Poisson arrivals 216

11.1.2 Finite population 217

11.1.3 Approximation 218

11.2 2G mobile networks 219

11.2.1 Voice traffic 219

11.2.2 Data traffic 221

11.3 3G mobile networks 223

11.3.1 Uplink 223

11.3.2 Downlink 225

11.4 3G+ mobile networks 228

11.4.1 Homogeneous case 228

11.4.2 Heterogeneous case 228

11.5 WiFi access networks 231

11.5.1 UDP traffic 233

11.5.2 TCP traffic 236

11.5.3 Random traffic 237

11.6 Data centers 238

11.6.1 Static routing 238

11.6.2 Greedy routing 239

11.6.3 Adaptive routing 240

11.7 Cloud computing 241

11.8 Exercises 242

11.9 Solution to the exercises 245

Index 251

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