Access Nets: Third International Conference on Access Networks, AccessNets 2008, Las Vegas, NV, USA, October 15-17, 2008. Revised Papers (Lecture Notes ... and Telecommunications Engineering)

Access Nets......Page 1
Preface......Page 7
Organization......Page 8
Table of Contents......Page 12
Introduction......Page 15
WiMAX Basics......Page 16
Global HOWRAN Architecture......Page 19
Head-End Node Hardware Architecture......Page 21
HONU Hardware Architecture......Page 22
HOWRAN Control Plane......Page 23
Wimax Cell Planning with HOWRAN......Page 24
Conclusion......Page 28
Introduction......Page 30
RoF vs. R&F Networks......Page 32
Enabling Technologies......Page 35
State of the Art......Page 39
SuperMAN......Page 42
RPR/WiMAX Interface......Page 44
WDM EPON/Next-Generation WiFi Interface......Page 45
Conclusions......Page 46
Introduction......Page 50
Related Work......Page 51
Comparison of IPACT-Limited and Offline Excess Bandwidth Distribution......Page 52
Simulation Set-Up......Page 53
Impact of Offline, Hybrid, and Online Scheduling......Page 54
Impact of Round Trip Time $RTT$ and Maximum Grant Size $G_{max}$......Page 55
Simulation Results......Page 57
Conclusion......Page 58
Introduction......Page 60
Technology Requirements......Page 61
Technology Resources......Page 62
Decision Variables......Page 63
Additional Constraints......Page 64
The Optimization Algorithm......Page 65
Wireless Coverage......Page 66
Connection to the Backbone Network......Page 67
The Optimization Scenario......Page 69
Optimization Results......Page 71
Assessment through Simulated Annealing Optimization......Page 73
References......Page 75
Introduction......Page 76
DSM Level 1: Dynamics and Politeness......Page 77
The DSL Environment and Stability......Page 78
Tiered Rate Adaptation (TRA)......Page 80
Spectrum Balancing Concept......Page 81
Zap Your Neighbor First: Virtual Noise Power Increases......Page 82
Noise Cancellation Basics......Page 87
Reducing Power by Cancelling Noise......Page 88
CuPONs......Page 89
Conclusion......Page 90
Introduction......Page 92
System Model for QS-CDMA with BPSK......Page 93
Comparison between Orthogonal and Quasi-orthogonal Codes......Page 96
BER Analysis in Presence of Noise......Page 97
Simulation Results......Page 99
Conclusion......Page 101
References......Page 102
Introduction......Page 103
Municipal WiFi Networks......Page 104
Session Mobility......Page 105
General Description......Page 106
Network Topology......Page 107
panOULU Subscription......Page 108
Mobile APs......Page 109
General Network Usage Statistics......Page 110
Session Mobility......Page 111
Roaming Performance......Page 113
Discussion......Page 114
References......Page 115
Introduction......Page 116
Network Topology Acquisition Phase......Page 117
Actual Handover Phase......Page 118
Handover Initiation......Page 120
TBS Selection and Insinuation......Page 121
HO Indication and DL Retransmissions......Page 123
UL Retransmissions and Registration......Page 124
Simulation Scenario......Page 125
NTAP HO Latency Analysis......Page 127
AHOP HO Latency Analysis and CDT Analysis......Page 129
Conclusion......Page 130
Introduction......Page 132
Constrained Queueing Systems......Page 135
Scheduling in IQ Crossbar Switches......Page 137
Transformation of IQ Switch Scheduling to WMN Scheduling......Page 140
Routing in a WMN......Page 143
The Single-Channel WMN......Page 145
A Communication Tree in a 16 Node WMN......Page 146
Experimental Results......Page 147
Scalability......Page 148
References......Page 149
Introduction......Page 152
Simulation Setup......Page 154
Results......Page 155
Conclusions......Page 158
Introduction......Page 160
Pragmatism and Simplicity as the Main Design Principles......Page 161
End-to-End QoS Solution......Page 162
Realising QoS in the Access Network......Page 164
Realising QoS in the First Mile......Page 166
Validation......Page 167
Conclusion......Page 174
Introduction......Page 176
Measurement of Periodically Switching Channel......Page 178
Modeling of Periodically Switching Channel......Page 181
Channel Simulator......Page 183
Effect of Incorrect Channel Estimation......Page 188
Conclusion......Page 189
Introduction......Page 190
Building Broadband Access over Low-Voltage Grid......Page 191
Optimization Paradigms......Page 193
Problem Description......Page 194
Network Costs......Page 195
Downlink and Uplink Delay in B-PLC Access Networks......Page 196
Parameters Setting......Page 199
Pareto-Based Multi-objective Evolutionary Algorithm Solving the GBSP......Page 200
Comparison of Single- and Multi-objective Optimization......Page 202
Conclusions......Page 204
References......Page 205
Introduction......Page 206
Design of B-PLC Sites......Page 208
Comparison with Wireless Networks......Page 209
Problem Definition......Page 210
Traffic Demand in B-PLC Sites......Page 211
Modelling of Interferences in B-PLC Sites......Page 212
Optimization Approaches and Used Metaheuristics......Page 213
Problem Instances and System Characteristics......Page 215
Parameters Setting......Page 216
Evaluation of Pareto-Based MOEAs......Page 218
Conclusions......Page 220
References......Page 221
Introduction......Page 222
Hybrid Fiber-VDSL Access Networks......Page 223
Objective Function and Constraints......Page 224
Strategy......Page 225
Binary Modeling......Page 226
Introduction......Page 227
Enhanced DBPSO......Page 228
Optimization Environment......Page 229
Results and Comparison......Page 230
Conclusion......Page 235
Introduction......Page 238
The Spectrum Balancing Problem......Page 239
Related Work......Page 240
Multi-User Greedy Bit Loading......Page 241
Near-Optimal Multi-user Greedy Bit-Loading......Page 243
A New Cost Function......Page 244
Algorithm Complexity......Page 245
Simulation Results......Page 246
8-User Central Office Scenario......Page 247
8-User Mixed Deployment Scenario......Page 248
Discussion of Results......Page 250
Conclusion......Page 252
Network Architecture......Page 254
User Application Profiles......Page 256
Network Configurations......Page 258
Static Configuration......Page 259
Sensitivity Analysis......Page 260
Dynamic Network Configuration......Page 261
Inter-PON Bandwidth Re-allocation......Page 262
Conclusions......Page 263
References......Page 264
Introduction......Page 265
FPGA Based GPON Emulator......Page 266
Common Method to Achieve Better Performance and Higher Throughput......Page 267
Common Techniques of Parallelism and Pipelining as used in the GPON Emulator......Page 268
Issues Facing Current GPON SAR Implementations......Page 269
Novel GPON SAR......Page 270
Efficiency Advantages Verified by OPNET Simulation Results......Page 271
Conclusions......Page 276
Introduction......Page 278
TCP and Asymmetry Issues......Page 279
Goal and Structure of the Paper......Page 280
Packet Transmission Times......Page 281
Special Case: Small Packets......Page 284
ACK Compression......Page 285
Download-Only Case: Fixed Bandwidth Allocation......Page 286
Impact of DBA......Page 289
Simultaneous Downloading and Uploading......Page 290
Conclusions and Perspectives......Page 292
Introduction......Page 294
Problem Analysis......Page 295
The Fast IPTV Channel Switching Processing Procedure......Page 297
Generating and Maintaining Channel List......Page 298
Message Sequences for Two Channel Switching Cases......Page 299
Test Bed......Page 300
References......Page 301
Introduction......Page 303
Control Message......Page 304
WDM IPACT......Page 305
Simulations......Page 307
Differentiated Services WDM IPACT-ST......Page 309
Conclusions......Page 310
References......Page 311
Introduction......Page 312
VoIP Traffic Model in WiMAX......Page 313
Bundling of Voice Frame (Packet)......Page 314
Scheduling Algorithm......Page 316
Simulation Statistics......Page 317
Performance of Frame Bundling for VoIP in WiMAX......Page 318
Performance of Aggressive AMC for VoIP in WiMAX......Page 321
References......Page 324
Introduction......Page 326
System Model......Page 327
Bit Allocation Algorithms for Single User......Page 329
Adaptive Sub-carrier and Bit Allocation Algorithms for Multi-users......Page 330
Simulation Results......Page 332
References......Page 335
Introduction......Page 337
QoS and Wireless Scheduling......Page 338
Wireless Schedulers for IEEE 802.11e WLAN......Page 339
Initialization of PIMD......Page 340
The PIMD Algorithm......Page 341
Experimental Result......Page 342
Test Scenario 1: Only VBR Traffic......Page 343
Test Scenario 2: Simultaneous Audio, VBR, and CBR Traffic......Page 344
References......Page 345
User Classification......Page 347
Recommended Access Methods......Page 349
References......Page 354
Introduction......Page 355
System Model......Page 356
Overlapped Interference Sequences Identification......Page 358
Hits Quantification due to Overlap......Page 359
MAI Limited BER Analysis......Page 361
Numerical Results and Discussion......Page 364
Conclusion......Page 366
References......Page 367
Introduction......Page 368
UMTS, WLAN and WiMAX Signals......Page 369
Experimental Setup and Results......Page 371
References......Page 378
Introduction......Page 379
Standardized Upstream Power Back-Off for VDSL Systems......Page 381
Parameter Estimation for CUPBO......Page 382
Optimization Algorithm......Page 384
Implementation Details......Page 385
Performance Evaluation for the Two-User Case......Page 387
Conclusions......Page 392
Introduction......Page 395
Experiment Configuration......Page 396
Testbed and Experiment Procedure......Page 397
Noise Modeling and Generation......Page 398
Configuration Parameters......Page 399
Experiment Results Analysis......Page 400
Metric Correlation......Page 402
Modeling Methodology......Page 403
Estimating Packet Loss......Page 404
Estimating Video Quality......Page 406
Related Work......Page 408
Conclusions......Page 409
References......Page 410
Introduction......Page 411
Background and Related Work......Page 412
Design Issues......Page 413
Architectures......Page 414
Resource Management and QoS Support......Page 415
Function Overview......Page 416
Problem Statement......Page 418
Scheduling Algorithm......Page 419
Simulation Results......Page 421
References......Page 422
Introduction......Page 424
The Notation......Page 427
Cost Functions......Page 430
Preprocessing......Page 431
Numerical Results......Page 432
An Illustrative Example......Page 433
Performance Evaluation......Page 435
Conclusions and Further Works......Page 437
Introduction......Page 441
Theoretical Background......Page 442
Difficulties......Page 445
Dispersion......Page 446
Spatial Resolution......Page 447
Proposed Approach......Page 449
Processing......Page 450
Non-parametric Estimation......Page 452
Conclusions......Page 453
References......Page 454
Introduction......Page 455
Decoder Scheme......Page 457
Codec Scheme over AWG-Based......Page 458
MAI Cancellation......Page 460
Signal Power Evaluation......Page 461
PIIN Power Evaluation......Page 462
Signal to PIIN Ratio Evaluation......Page 464
Simulations and Discussions......Page 466
Conclusions......Page 468
References......Page 469
Introduction......Page 471
Related Work......Page 472
Considerations for Radio......Page 473
Sampling Design......Page 474
Case Study: Portland, Oregon......Page 476
Test Device and Procedure......Page 477
Results......Page 479
Conclusion......Page 482
Author Index......Page 485