ISO/IEC INTERNATIONAL STANDARD 16504 First edition 2011-11-15 Information technology - Telecommunications and information exchange between systems MAC and PHY for operation in TV white space Technologies de I'information - Télecommunications et échange d'information entre systemes MAC et PHY pour opération en espace blancTV Reference number ISO/IEC 16504:2011(E) IEC @ISO/IEC2011 ISO/IEC 16504:2011(E) Contents Page Foreword ..vii Introduction. ..vili 1 Scope.. 2 Conformance 3 Normative references. 4 Terms and definitions .. 5 Abbreviations and Acronyms 6 General description.... 6.1 Network components.. 6.2 Network formation.... 6.3 Protocolarchitecture 6.4 Addressing... 6.5 PHY features . 6.6 Overview of MAC service functionality.. 10 6.6.1 Logical groups... 11 6.6.2 Control algorithms 6.6.3 Channel selection.. 6.6.4 The superframe.. 11 6.6.5 Beaconing 12 6.6.6 Medium access 13 6.6.7 Data communication between devices 13 6.6.8 MAC frame data rates... 6.6.9 Security.. 13 6.6.10 Information discovery.... 6.6.11 Support for higherlayer timer synchronization..... 14 6.6.12 Protection of incumbent users .... 14 6.6.13 Self-coexistence ... 6.6.14 Rate adaptation.. 15 6.6.15 Power management.... 15 7 MAC common part sublayer.. 7.1 MAC Frame Format .. 15 7.1.1 Frame format conventions 16 7.1.2 General MAC frame format. 16 7.1.3 Beacon frames... 22 7.1.4 Control frames .. 24 7.1.5 Command frames . 27 7.1.6 Data frames..... 7.1.7 Aggregated data frames .35 7.1.8 Information elements , 35 7.2 Frame processing. 63 7.2.1 Frameaddresses 7.2.2 Frame reception.. .64 7.2.3 Frame transaction . 64 7.2.4 Frame transfer 7.2.5 Frame retry.... 7.2.6 Inter-frame space (IFS) 65 7.2.7 Duplicate detection 66 7.2.8 RTS/CTS uSe... ISO/IEC2011-All rights reserved ili ISO/IEC 16504:2011(E) 7.2.9 MAc header fields.......... 7.2.10 Informationelements ..69 7.3 MAc Structure and Beaconing... .73 7.3.1 Beacon Period..... .74 7.3.2 Beacon slot state. ..74 7.3.3 BP length ... .74 7.3.4 Beacon transmission and reception. .75 7.3.5 7.3.6 BPcontraction.. ..76 7.3.7 Merger of multiple beacon groups... .77 7.3.8 Signalling window......... 7.4 Device Synchronization .. 7.4.1 Clock accuracy.. ..80 7.4.2 Synchronization for devices in hibernation mode .80 7.4.3 7.5 Data Transfer Period 7.5.1 Prioritized Contention Access (PCA). .83 7.5.2 Channel Reservation Access (CRA) .89 7.6 Fragmentation and Aggregation ...... 7.6.1 Fragmentation and reassembly.. ..96 7.6.2 Aggregation..... ..97 7.7 ARQ, Multirate Support and Power Control.... 7.7.1 ARQ Policies ..... 7.7.2 Multi-rate Support.. .100 7.7.3 Transmit Power Control. 100 7.8 Dynamic Channel Selection.... .100 7.9 Power Management Mechanisms .101 7.9.1 Power management modes. 101 7.9.2 Device power states .. 101 7.9.3 Powerstatetransitions..... 101 7.9.4 Hibernation mode operation ... .103 7.9.5 Hibernation anchor operation .. 103 7.10 104 7.11 Protection of incumbents 7.11.1 Channel Measurement 104 7.11.2 Channel Classification ... 107 7.11.3 Channel Evacuation .108 7.12 Self-coexistence.. 109 7.12.1 Self-coexistence scenarios. 109 7.12.2 Distributed self-coexistence mechanisms.... 109 7.12.3 Centralized self-coexistence mechanisms .... .110 7.13 Network Entry and Initialization ... .111 7.13.1 Initial Channel SCAN and Device Discovery... 113 7.13.2 114 7.13.3 Pair discovery .. 115 7.13.4 Createljoin a beacon group ..... 116 7.13.5 116 7.13.6 Setup connections...... 117 7.14 MAC sublayer parameters 118 8 .120 Security.... 8.1 Security mechanisms.. 120 8.1.1 Security operation ... 120 8.1.2 4-way handshake .121 8.1.3 Key transport. 121 8.1.4 Freshness protection 121 8.1.5 Data encryption...... 121 8.1.6 Frame integrity protection 121 8.2 Security modes 121 8.2.1 Security mode O .... 123 iv ISO/IEc2011-All rights reserved ISO/IEC 16504:2011(E) 8.2.2 Security mode 1.... 8.2.3 Security mode 2.. 123 8.3 Temporal keys .123 8.3.1 Mutual authentication and PTK derivation . .124 8.3.2 GTK exchange ...... 125 8.3.3 Pseudo-random