WIMEDIA UWB: TECHNOLOGY OF CHOICE FOR WIRELESS USB AND BLUETOOTH
CONTENTS INTRODUCTION 1 1 WHAT IS UWB? 1 2 WHY UWB? 1 2 1 HIGHER CHANNEL CAPACITY AND POWER EF?CIENCY 1 2 2 LITTLE INTERFERENCE TO AND FROM NARROWBAND SYSTEMS 1 2 3 UNMET WPAN DEMAND 1 2 4 HIGH-PRECISION RANGING 1 3 UWB MARKET 1 3 1 CLUTTER OF CABLES 1 3 2 NETWORKING SHORTCOMINGS 1 3 3 UWB FILLS A GAP 1 3 4 W-USB 1 3 5 HIGH RATE BLUETOOTH 1 3 6 IP OVER UWB 1 3 7 WHAT TO EXPECT 1 4 UWB STANDARDIZATION 1 4 1 IEEE 1 4 2 WIMEDIA VERSUS UWB FORUM 1 4 3 ECMA INTERNATIONAL 1 5 UWB APPLICATIONS 1 6 SUMMARY FEATURES 1 7 TERMINOLOGY REFERENCES WORLDWIDE REGULATIONS 2 1 UNITED STATES 2 2 JAPAN 2 3 KOREA 2 4 EUROPE 2 5 CHINA 2 6 SUMMARY PHYSICAL LAYER 3 1 FEATURE SUMMARY 3 1 1 PACKET RADIO 3 1 2 MB-OFDM 3 1 3 ERROR CORRECTION AND VARIABLE DATA RATE 3 2 WIMEDIA OFDM 3 2 1 FREQUENCY-SELECTIVE FADING 3 2 2 MATHEMATICAL FRAMEWORK 3 2 3 EXTENSIONS TO OFDM THE ZERO POST?X AND FURTHER ISI REDUCTION ZERO, PILOT, AND GUARD SUBCARRIERS 3 2 4 SPREADING 3 2 5 MODULATION 3 2 6 TONE NULLING 3 2 7 SUMMARY 3 3 PMD 3 3 1 WIMEDIA BAND PLAN 3 3 2 FREQUENCY HOPPING 3 3 3 COMMON CLOCK REFERENCE 3 3 4 TRANSMIT POWER CONTROL 3 4 SCRAMBLING, INTERLEAVING, AND ERROR CORRECTION 3 4 1 SCRAMBLING 3 4 2 CONVOLUTIONAL CODING 3 4 3 HEADER PROTECTION: HEADER CHECK SEQUENCE AND REED–SOLOMON CODING 3 4 4 INTERLEAVING 3 4 5 SUMMARY 3 5 PACKET STRUCTURE 3 5 1 STANDARD AND BURST MODES 3 5 2 PLCP PREAMBLE 3 5 3 PLCP HEADER 3 5 4 MODULATED PSDU 3 6 PERFORMANCE REQUIREMENTS 3 6 1 S/N MEASUREMENTS AND TERMINOLOGY 3 6 2 TRANSMITTER ERROR SPECI?CATIONS TRANSMIT SPECTRAL MASK TRANSMITTER CONSTELLATION ERROR 3 6 3 RECEIVER PERFORMANCE SPECI?CATIONS 3 6 4 SIGNAL QUALITY MEASUREMENTS 3 6 5 CHANNELS AND CHANNEL MODELING 3 7 RANGING 3 8 PHY SERVICES AND INTERFACES 3 8 1 MANAGEMENT SERVICES 3 8 2 TRANSMIT AND RECEIVE SERVICES 3 8 3 CCA SERVICE MEDIUM ACCESS CONTROL SUBLAYER 4 1 FEATURE SUMMARY 4 1 1 PEER-TO-PEER 4 1 2 AD HOC 4 1 3 TWO-HOP NETWORKING 4 1 4 PRIORITIZED CONTENTION ACCESS (PCA) 4 1 5 DISTRIBUTED RESERVATION PROTOCOL (DRP) 4 1 6 MOBILITY 4 1 7 BEACONING 4 1 8 BAND GROUPS AND TIME-FREQUENCY CHANNELS (TFC) 4 1 9 ACKNOWLEDGMENT POLICIES 4 1 10 RESERVATION POLICIES 4 1 11 SECURITY 4 1 12 HIBERNATION 4 1 13 FRAGMENTATION, AGGREGATION 4 1 14 RANGING 4 2 SUPERFRAMES AND TIMESLOTS 4 3 DEVICE ADDRESS 4 4 FRAME FORMATS 4 4 1 BEACON FRAMES BPOIE DRP IE ASIE 4 4 2 CONTROL FRAMES 4 4 3 COMMAND FRAMES 4 4 4 DATA FRAMES 4 4 5 AGGREGATED DATA FRAMES 4 5 FRAME PROCESSING 4 5 1 FRAME RECEPTION AND TRANSMISSION 4 5 2 ACKNOWLEDGMENTS AND RETRANSMISSIONS 4 5 3 FRAME TRANSACTION AND INTER-FRAME SPACING 4 5 4 FRAGMENTATION AND AGGREGATION 4 5 5 CHANNEL SELECTION 4 6 SYNCHRONIZATION 4 6 1 SOURCES OF TIMING ERROR 4 6 2 BPST ALIGNMENT 4 6 3 GUARD TIME 4 7 POWER CONSERVATION 4 7 1 POWER MODES 4 7 2 POWER STATES 4 8 BEACON PROTOCOL 4 8 1 BP 4 8 2 BEACON LOSS OR COLLISION 4 8 3 BEACON CONTRACTION 4 8 4 ALIEN BEACONS 4 8 5 BP MERGING 4 9 DRP 4 10 PCA 4 11 MAC POLICIES 4 11 1 RESERVATION SIZE LIMITATIONS 4 11 2 RESERVATION COMPACTION 4 11 3 PCA RESERVATION RULES 4 12 SECURITY 4 13 RANGING PROTOCOL ADAPTATION LAYER 5 1 CW-USB 5 1 1 USB VERSUS CW-USB 5 1 2 FRAME FORMATS 5 1 3 TRANSACTION GROUPS 5 1 4 DEVICE BEACONING 5 1 5 DATA FLOW AND CONNECTION PROCESS 5 1 6 DUAL ROLE DEVICE 5 1 7 ASSOCIATION MODEL 5 1 8 IMPLEMENTATION AND INTERFACE ISSUES