Distributed Multimedia Retrieval Strategies for Large Scale Networked Systems (eBook)

Contents 7
List of Figures 11
List of Tables 18
Preface 19
Acknowledgments 24
Chapter 1 DISTRIBUTED TECHNOLOGIES FOR MULTIMEDIA RETRIEVAL OVER NETWORKS 26
1.1. Video on Demand: The Challenge and Contemporary Solutions 26
1.2. General Multimedia Storage and Retrieval Architectures 28
1.3. RAID Array Technology: A Useful Insight 36
1.4. Related Network Technologies 38
1.5. Scalable Video 45
1.6. Are SANs an Efficient Solution? 47
1.7. Concluding Remarks 53
Chapter 2 MULTIPLE SERVERS RETRIEVAL STRATEGY DATA PARTITIONING APPROACH 54
2.1. Introduction to Multiple Server Technology 54
2.2. Problem Definition and Preliminary Remarks 58
2.3. Single Installment Retrieval Policy 62
2.4. Multi- installment Servicing Policy 66
2.5. Discussions on MSR Strategy 71
2.6. Concluding Remarks 76
Chapter 3 SUPPORTING MULTIPLE CLIENTS: CHANNEL PARTITIONING APPROACH 79
3.1. Tuning MSR Scheme for Multiple Clients: Issues and Challenges 79
3.2. System Model 81
3.3. Design of the TGS Server 87
3.4. Performance Study 106
3.5. Concluding Remarks 112
Chapter 4 AN ALTERNATIVE RETRIEVAL STRATEGY: A PLAY-WHILE- RETRIEVE APPROACH 116
4.1. Service Model and Preliminary Remarks 117
4.2. Design of Movie Retrieval Strategies 122
4.3. Buffer Management at Client Sites 134
4.4. Performance Evaluation of PWR: Single and Multi- installment Strategies 141
4.5. Concluding Remarks 150
Chapter 5 SCHEDULING OVER UNRELIABLE CHANNELS 154
5.1. Nothing Is Certain But Death And Taxes! 154
5.2. A Refined Model 154
5.3. CBR Case 157
5.4. VBR Case 166
5.5. Optimum Server Ordering 168
5.6. Determining the Optimum Relaxation Parameter c 173
5.7. Coupling the Relaxation Parameter c and the Number of Installments M 179
5.8. Simulation Study 180
5.9. Concluding Remarks 187
Chapter 6 ADAPTING TO NETWORK VARIABILITY 192
6.1. Relaxing the constraints is not enough 192
6.2. Dynamic Schedule Adaptation 192
6.3. Single Installment Revisited 195
6.4. Simulation Study 198
6.5. Discrete Event Simulation Study 205
6.6. Concluding Remarks 209
Chapter 7 FAULT- TOLERANCE ANALYSIS FOR MULTIPLE SERVERS MOVIE RETRIEVAL STRATEGY 212
7.1. What can go Wrong with an MSR strategy? 212
7.2. Revisiting the Design and Analysis of MSR Strategy with Server Reliability 217
7.3. Failure- Recovery Analysis 222
7.4. Performance Evaluation and Discussions 227
7.5. Concluding Remarks 234
Chapter 8 AN AGENT DRIVEN PRACTICAL MSR SYSTEM: JINI TECHNOLOGY 238
8.1. Challenges in Realizing a Practical MSR System 238
8.2. Service Description and Retrieval Strategy 242
8.3. Design of the JVoD Software Architecture 252
8.4. Implementation Test-bed and Discussions 265
8.5. Concluding Remarks 270
Chapter 9 FUTURE RESEARCH DIRECTIONS 273
References 278
Index 286
GLOSSARY 288