IEEE 802.11ac-2013

$157.63

IEEE Standard for Information technology–Telecommunications and information exchange between systems—Local and metropolitan area networks–Specific requirements–Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications–Amendment 4: Enhancements for Very High Throughput for Operation in Bands below 6 GHz.

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IEEE	2013

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Description

Amendment Standard – Superseded. The purpose of this amendment is to improve the IEEE 802.11™ wireless local area network (WLAN) user experience by providing significantly higher basic service set (BSS) throughput for existing WLAN application areas and to enable new market segments for operation below 6 GHz including distribution of multiple multimedia/data streams.

PDF Catalog

PDF Pages	PDF Title
1	IEEE Std 802.11ac™-2013 front cover
3	Title page
4	AbstractKeywords
5	Important Notices and Disclaimers Concerning IEEE Standards Documents
8	Participants
12	Introduction
13	Contents
24	Tables
27	Figures
31	IMPORTANT NOTICE
32	3. Definitions, acronyms and abbreviations 3.1 Definitions 3.2 Definitions specific to IEEE 802.11
38	3.3 Abbreviations and acronyms
40	4. General description 4.3 Components of the IEEE 802.11 architecture 4.3.4 Distribution system (DS) concepts 4.3.4.3 Robust security network association (RSNA) 4.3.10a Very high throughput (VHT) STA
41	4.5 Overview of the services 4.5.4 Access control and data confidentiality services 4.5.4.1 General 4.5.4.7 Replay detection 4.5.4.9 Robust management frame protection
42	4.9 Reference model 4.9.1 General
43	5. MAC service definition 5.1 Overview of MAC services 5.1.2 Security services 5.2 MAC data service specification 5.2.2 MA-UNITDATA.request 5.2.2.2 Semantics of the service primitive
44	6. Layer management 6.1 Overview of management model 6.3 MLME SAP interface 6.3.3 Scan 6.3.3.3 MLME-SCAN.confirm 6.3.3.3.2 Semantics of the service primitive 6.3.4 Synchronize 6.3.4.2 MLME-JOIN.request 6.3.4.2.2 Semantics of the service primitive
45	6.3.4.2.4 Effect of receipt 6.3.7 Associate 6.3.7.2 MLME-ASSOCIATE.request 6.3.7.2.2 Semantics of the service primitive
46	6.3.7.3 MLME-ASSOCIATE.confirm 6.3.7.3.2 Semantics of the service primitive
47	6.3.7.4 MLME-ASSOCIATE.indication 6.3.7.4.2 Semantics of the service primitive
48	6.3.7.5 MLME-ASSOCIATE.response 6.3.7.5.2 Semantics of the service primitive
49	6.3.8 Reassociate 6.3.8.2 MLME-REASSOCIATE.request 6.3.8.2.2 Semantics of the service primitive 6.3.8.3 MLME-REASSOCIATE.confirm 6.3.8.3.2 Semantics of the service primitive
50	6.3.8.4 MLME-REASSOCIATE.indication 6.3.8.4.2 Semantics of the service primitive
51	6.3.8.5 MLME-REASSOCIATE.response 6.3.8.5.2 Semantics of the service primitive
52	6.3.11 Start 6.3.11.2 MLME-START.request 6.3.11.2.2 Semantics of the service primitive
53	6.3.11.2.4 Effect of receipt
54	6.3.19 SetKeys 6.3.19.1 MLME-SETKEYS.request 6.3.19.1.2 Semantics of the service primitive 6.5 PLME SAP interface 6.5.4 PLME-CHARACTERISTICS.confirm 6.5.4.2 Semantics of the service primitive
56	6.5.8 PLME-TXTIME.confirm 6.5.8.1 Function
57	6.5.8.2 Semantics of the service primitive
58	7. PHY service specification 7.1 Scope 7.2 PHY functions 7.3 Detailed PHY service specifications 7.3.2 Overview of the service 7.3.4 Basic service and options 7.3.4.5 Vector descriptions
59	7.3.5 PHY-SAP detailed service specification 7.3.5.2 PHY-DATA.request 7.3.5.2.2 Semantics of the service primitive 7.3.5.3 PHY-DATA.indication 7.3.5.3.3 When generated 7.3.5.6 PHY-TXSTART.confirm 7.3.5.6.3 When generated
60	7.3.5.11 PHY-CCA.indication 7.3.5.11.2 Semantics of the service primitive
61	7.3.5.11.3 When generated
62	7.3.5.13 PHY-RXEND.indication 7.3.5.13.2 Semantics of the service primitive
63	8. Frame formats 8.2 MAC frame formats 8.2.3 General frame format 8.2.4 Frame fields 8.2.4.1 Frame Control field 8.2.4.1.3 Type and Subtype fields 8.2.4.1.8 More Data field
64	8.2.4.1.10 Order field 8.2.4.2 Duration/ID field 8.2.4.3 Address fields 8.2.4.3.8 TA field 8.2.4.5 QoS Control field 8.2.4.5.4 Ack Policy subfield
65	8.2.4.6 HT Control field 8.2.4.6.1 General 8.2.4.6.2 HT variant
67	8.2.4.6.3 VHT variant
70	8.2.4.7 Frame Body field 8.2.4.7.1 General
71	8.2.5 Duration/ID field (QoS STA) 8.2.5.1 General 8.2.5.2 Setting for single and multiple protection under enhanced distributed channel access (EDCA)
72	8.3 Format of individual frame types 8.3.1 Control frames 8.3.1.2 RTS frame format
73	8.3.1.3 CTS frame format 8.3.1.4 ACK frame format 8.3.1.5 PS-Poll frame format 8.3.1.6 CF-End frame format 8.3.1.8 BlockAckReq frame format 8.3.1.8.1 Overview
74	8.3.1.9 BlockAck frame format 8.3.1.9.1 Overview 8.3.1.20 VHT NDP Announcement frame format
75	8.3.1.21 Beamforming Report Poll frame format
76	8.3.2 Data frames 8.3.2.1 Data frame format 8.3.2.2 Aggregate MSDU (A-MSDU) format 8.3.2.2.1 General 8.3.3 Management frames 8.3.3.1 Format of management frames
77	8.3.3.2 Beacon frame format
78	8.3.3.5 Association Request frame format 8.3.3.6 Association Response frame format
79	8.3.3.7 Reassociation Request frame format 8.3.3.8 Reassociation Response frame format 8.3.3.9 Probe Request frame format
80	8.3.3.10 Probe Response frame format
81	8.4 Management and Extension frames body components 8.4.1 Fields that are not information elements 8.4.1.9 Status Code field 8.4.1.11 Action field 8.4.1.27 CSI Report field 8.4.1.28 Noncompressed Beamforming Report field
82	8.4.1.29 Compressed Beamforming Report field 8.4.1.32 Rate Identification field
83	8.4.1.47 VHT MIMO Control field
85	8.4.1.48 VHT Compressed Beamforming Report field
94	8.4.1.49 MU Exclusive Beamforming Report field
98	8.4.1.50 Operating Mode field
99	8.4.1.51 Membership Status Array field
100	8.4.1.52 User Position Array field
101	8.4.2 Information elements 8.4.2.1 General 8.4.2.3 Supported Rates element 8.4.2.10 Country element
104	8.4.2.17 Power Capability element
105	8.4.2.22 Secondary Channel Offset element 8.4.2.23 Measurement Request element 8.4.2.23.2 Basic request 8.4.2.23.3 CCA request 8.4.2.23.4 RPI histogram request 8.4.2.23.5 Channel Load request
106	8.4.2.23.6 Noise Histogram Request
107	8.4.2.23.7 Beacon Request
108	8.4.2.23.8 Frame request
109	8.4.2.24 Measurement Report element 8.4.2.24.2 Basic report 8.4.2.24.3 CCA report 8.4.2.24.4 RPI histogram report
110	8.4.2.24.5 Channel Load request 8.4.2.24.6 Noise Histogram Report
111	8.4.2.24.7 Beacon Report 8.4.2.24.8 Frame Report
112	8.4.2.27 RSNE 8.4.2.27.1 General 8.4.2.27.2 Cipher suites
114	8.4.2.27.3 AKM suites 8.4.2.29 Extended Capabilities element
115	8.4.2.31 EDCA Parameter Set element 8.4.2.38 AP Channel Report element
116	8.4.2.39 Neighbor Report element
117	8.4.2.40 RCPI element 8.4.2.48 Multiple BSSID element 8.4.2.56 Supported Operating Classes element
118	8.4.2.57 Management MIC element
119	8.4.2.58 HT Capabilities element 8.4.2.58.2 HT Capabilities Info field 8.4.2.58.4 Supported MCS Set field
120	8.4.2.58.5 HT Extended Capabilities field 8.4.2.58.6 Transmit Beamforming Capabilities
121	8.4.2.59 HT Operation element 8.4.2.69 Event Request element 8.4.2.69.4 Peer-to-Peer Link event request 8.4.2.70 Event Report element 8.4.2.70.4 Peer-to-Peer Link event report
122	8.4.2.71 Diagnostic Request element 8.4.2.71.5 Diagnostic Information subelement descriptions 8.4.2.73 Location Parameters element 8.4.2.73.3 Location Indication Channels subelement
123	8.4.2.73.5 Radio Information subelement 8.4.2.73.8 Time of Departure subelement 8.4.2.88 Channel Usage element 8.4.2.160 VHT Capabilities element 8.4.2.160.1 VHT Capabilities element structure
124	8.4.2.160.2 VHT Capabilities Info field
127	8.4.2.160.3 Supported VHT-MCS and NSS Set field
128	8.4.2.161 VHT Operation element
129	8.4.2.162 Extended BSS Load element
130	8.4.2.163 Wide Bandwidth Channel Switch element
131	8.4.2.164 VHT Transmit Power Envelope element
132	8.4.2.165 Channel Switch Wrapper element
133	8.4.2.166 AID element
134	8.4.2.167 Quiet Channel element 8.4.2.168 Operating Mode Notification element
135	8.5 Action frame format details 8.5.2 Spectrum management Action frames 8.5.2.6 Channel Switch Announcement frame format
136	8.5.4 DLS Action frame details 8.5.4.2 DLS Request frame format 8.5.4.3 DLS Response frame format 8.5.8 Public Action details 8.5.8.3 Measurement Pilot frame format
137	8.5.8.7 Extended Channel Switch Announcement frame format 8.5.8.16 TDLS Discovery Response frame format
138	8.5.13 TDLS Action frame details 8.5.13.2 TDLS Setup Request Action field format 8.5.13.3 TDLS Setup Response Action field format
139	8.5.13.4 TDLS Setup Confirm Action field format 8.5.13.7 TDLS Channel Switch Request Action field format
140	8.5.14 WNM Action fields 8.5.14.24 Channel Usage Response frame format 8.5.16 Self-protected Action frame details 8.5.16.2 Mesh Peering Open frame format 8.5.16.2.2 Mesh Peering Open frame details
141	8.5.16.3 Mesh Peering Confirm frame format 8.5.16.3.2 Mesh Peering Confirm frame details 8.5.23 VHT Action frame details 8.5.23.1 VHT Action field
142	8.5.23.2 VHT Compressed Beamforming frame format 8.5.23.3 Group ID Management frame format
143	8.5.23.4 Operating Mode Notification frame format 8.6 Aggregate MPDU (A-MPDU) 8.6.1 A-MPDU format
146	8.6.3 A-MPDU contents
148	9. MAC sublayer functional description 9.2 MAC architecture 9.2.1 General 9.2.4 Hybrid coordination function (HCF) 9.2.4.1 General
149	9.2.4.2 HCF contention-based channel access (EDCA) 9.2.7 Fragmentation/defragmentation overview
150	9.3 DCF 9.3.1 General 9.3.2 Procedures common to both DCF and EDCAF 9.3.2.3 IFS 9.3.2.3.2 RIFS 9.3.2.3.4 PIFS
151	9.3.2.5a VHT RTS procedure 9.3.2.6 CTS and DMG CTS procedure
152	9.3.2.7 Dual CTS protection 9.3.2.7.1 Dual CTS protection procedure 9.3.2.9a MU acknowledgment procedure
154	9.3.4 DCF access procedure 9.3.4.4 Recovery procedures and retransmit limits 9.3.7 DCF timing relations 9.5 Fragmentation
155	9.7 Multirate support 9.7.1 Overview 9.7.4 Basic Rate Set and Basic MCS Set for mesh STA 9.7.5 Rate selection for data and management frames 9.7.5.3 Rate selection for other group addressed data and management frames 9.7.5.5a Rate selection for data frames sent within an FMS stream
156	9.7.5.6 Rate selection for other individually addressed data and management frames
157	9.7.6 Rate selection for control frames 9.7.6.1 General rules for rate selection for control frames
158	9.7.6.2 Rate selection for control frames that initiate a TXOP 9.7.6.4 Rate selection for control frames that are not control response frames
159	9.7.6.5 Rate selection for control response frames 9.7.6.5.1 Introduction 9.7.6.5.2 Selection of a rate or MCS
160	9.7.6.5.3 Control response frame MCS computation
162	9.7.6.6 Channel Width selection for control frames
164	9.7.8 Modulation classes
165	9.7.9 Non-HT basic rate calculation 9.7.10 Channel Width in non-HT and non-HT duplicate PPDUs
166	9.7.11 Rate selection constraints for VHT STAs 9.7.11.1 Rx Supported VHT-MCS and NSS Set 9.7.11.2 Tx Supported VHT-MCS and NSS Set
167	9.7.11.3 Additional rate selection constraints for VHT PPDUs
168	9.9 HT Control field operation 9.11 A-MSDU operation
169	9.12 A-MPDU operation 9.12.2 A-MPDU length limit rules
170	9.12.3 Minimum MPDU Start Spacing field 9.12.4 A-MPDU aggregation of group addressed data frames
171	9.12.5 Transport of A-MPDU by the PHY data service 9.12.6 A-MPDU padding for VHT PPDU
172	9.12.7 Setting the EOF field of the MPDU delimiter
173	9.12.8 Transport of VHT single MPDUs 9.15 STBC operation 9.16 Short GI operation
175	9.17a Group ID and partial AID in VHT PPDUs
176	9.18 Operation across regulatory domains 9.18.5 Operation with operating classes and the VHT Transmit Power Envelope element
177	9.19 HCF 9.19.2 HCF contention-based channel access (EDCA) 9.19.2.2 EDCA TXOPs
178	9.19.2.3 Obtaining an EDCA TXOP
179	9.19.2.3a Sharing an EDCA TXOP 9.19.2.4 Multiple frame transmission in an EDCA TXOP
181	9.19.2.5 EDCA backoff procedure
183	9.19.2.6 Retransmit procedures 9.19.2.6.1 General
184	9.19.2.7 Truncation of a TXOP 9.19.2.8 EDCA channel access in a VHT BSS
185	9.19.3 HCCA 9.19.3.2 HCCA procedure 9.19.3.2.4 Recovery from the absence of an expected reception 9.19.3.5 HCCA transfer rules 9.19.3.5.3 Use of RTS/CTS
186	9.19.3.5.4 HCCA transfer rules for a VHT STA 9.21 Block Acknowledgment (Block Ack) 9.21.10 GCR Block Ack 9.21.10.3 GCR Block Ack BlockAckReq and BlockAck frame exchanges 9.23 Protection mechanisms 9.23.5 L-SIG TXOP protection 9.23.5.3 L-SIG TXOP protection rules at the TXOP responder 9.23.6 Protection Rules for VHT STAs 9.25 Reverse Direction Protocol 9.25.1 Reverse direction (RD) exchange sequence
187	9.25.3 Rules for RD initiator 9.25.4 Rules for responder 9.26 PSMP operation 9.26.1 Frame transmission mechanism during PSMP 9.26.1.2 PSMP downlink transmission (PSMP-DTT)
188	9.27 Sounding PPDUs 9.28 Link adaptation 9.28.2 Link adaptation using the HT variant HT Control field
189	9.28.3 Link adaptation using the VHT variant HT Control field
192	9.29 Transmit beamforming 9.29.1 General HT steering matrix calculations 9.29.2 HT tTransmit beamforming with implicit feedback 9.29.2.1 General
194	9.29.2.3 Bidirectional implicit transmit beamforming 9.29.2.4 Calibration 9.29.2.4.1 Introduction 9.29.2.4.3 Sounding exchange for calibration 9.29.2.4.4 CSI reporting for calibration 9.29.3 Explicit feedback beamforming
195	9.29.4 VHT MU beamforming 9.30 Antenna selection (ASEL) 9.30.1 Introduction 9.31 Null data packet (NDP) sounding 9.31.1 NDP rules
197	9.31.2 Transmission of an HT NDP 9.31.3 Determination of HT NDP destination 9.31.4 Determination of HT NDP source
198	9.31.5 VHT sounding protocol 9.31.5.1 General 9.31.5.2 Rules for VHT sounding protocol sequences
202	9.31.5.3 Rules for fragmented feedback in VHT sounding protocol sequences
203	9.31.6 Transmission of a VHT NDP
204	10. MLME 10.1 Synchronization 10.1.3 Maintaining synchronization 10.1.3.2 Beacon generation in non-DMG infrastructure networks 10.2 Power management 10.2.1 Power management in a non-DMG infrastructure network 10.2.1.17 TIM broadcast
205	10.2.1.19 VHT TXOP power save
206	10.3 STA authentication and association 10.3.5 Association, reassociation, and disassociation 10.3.5.3 PCP/AP association receipt procedures 10.3.5.5 PCP/AP reassociation receipt procedures 10.8 TPC procedures 10.8.2 Association based on transmit power capability
207	10.8.3a Interpretation of transmit power capability 10.8.4 Specification of regulatory and local maximum transmit power levels
208	10.9 DFS procedures 10.9.3 Quieting channels for testing
209	10.11 Radio measurement procedures 10.11.9 Specific measurement usage 10.11.9.1 Beacon Report
210	10.11.9.3 Channel Load Report
211	10.11.9.4 Noise Histogram Report 10.11.18 AP Channel Report 10.15 20/40 MHz BSS operation 10.15.2 Basic 20/40 MHz BSS functionality
212	10.15.8 Support for DSSS/CCK in 40 MHz 10.15.9 STA CCA sensing in a 20/40 MHz BSS 10.15.12 Switching between 40 MHz and 20 MHz 10.16 Phased coexistence operation (PCO) 10.16.1 General description of PCO
213	10.17 20/40 BSS Coexistence Management frame usage 10.22 Tunneled direct link setup 10.22.1 General
214	10.22.6 TDLS channel switching 10.22.6.3 TDLS channel switching and power saving 10.22.6.4 Setting up a wide bandwidth off-channel direct link 10.22.6.4.1 General
215	10.22.6.4.2 Basic wideband functionality 10.22.6.4.3 Channel selection for a wideband off-channel direct link 10.22.6.4.4 Switching from a wideband to a 20 MHz direct link 10.22.6.4.5 CCA sensing and NAV assertion in a 20 MHz, 40 MHz, 80 MHz, 160 MHz, or 80+80 MHz direct link 10.25 Quality-of-Service management frame (QMF) 10.25.1 General 10.25.1.2 Default QMF policy
216	10.39 VHT BSS operation 10.39.1 Basic VHT BSS functionality
217	10.39.2 Channel selection methods for a VHT BSS
218	10.39.3 Scanning requirements for VHT STA 10.39.4 Channel switching methods for a VHT BSS
221	10.39.5 NAV assertion in a VHT BSS 10.39.6 VHT STA antenna indication 10.39.7 BSS basic VHT-MCS and NSS set operation 10.40 Group ID management operation
222	10.41 Notification of operating mode changes
225	11. Security 11.4 RSNA confidentiality and integrity protocols 11.4.3 CTR with CBC-MAC Protocol (CCMP) 11.4.3.1 General 11.4.3.2 CCMP MPDU format
226	11.4.3.3 CCMP cryptographic encapsulation 11.4.3.3.6 CCM originator processing 11.4.3.4 CCMP decapsulation 11.4.3.4.2 CCM recipient processing 11.4.4 Broadcast/Multicast Integrity Protocol (BIP) 11.4.4.1 BIP overview
227	11.4.4.5 BIP transmission 11.4.4.6 BIP reception
228	11.4.5 GCM with Galois Message Authentication Code (GMAC) Protocol (GCMP) 11.4.5.1 GCMP overview 11.5 RSNA security association management 11.5.3 RSNA policy selection in an ESS 11.5.5 RSNA policy selection in an IBSS and for DLS
229	11.5.7 RSNA policy selection in an MBSS 11.6 Keys and key distribution 11.6.1 Key hierarchy 11.6.1.2 PRF
230	11.6.1.3 Pairwise key hierarchy
232	11.6.1.7 FT key hierarchy 11.6.1.7.2 Key derivation function (KDF) 11.6.1.7.3 PMK-R0
233	11.6.1.7.4 PMK-R1 11.6.1.7.5 PTK
234	11.6.2 EAPOL-Key frames
235	11.6.3 EAPOL-Key frame construction and processing 11.7 Mapping EAPOL keys to IEEE 802.11 keys 11.7.7 Mapping IGTK to BIP keys
236	13. MLME mesh procedures 13.2 Mesh discovery 13.2.4 Mesh STA configuration 13.2.7 Candidate peer mesh STA
237	18. Orthogonal frequency division multiplexing (OFDM) PHY specification 18.2 OFDM PHY specific service parameter list 18.2.2 TXVECTOR parameters 18.2.2.1 General 18.2.2.7 TXVECTOR CH_BANDWIDTH_IN_NON_HT 18.2.2.8 TXVECTOR DYN_BANDWIDTH_IN_NON_HT
238	18.2.3 RXVECTOR parameters 18.2.3.1 General 18.2.3.7 RXVECTOR CH_BANDWIDTH_IN_NON_HT 18.2.3.8 RXVECTOR DYN_BANDWIDTH_IN_NON_HT 18.3 OFDM PLCP sublayer 18.3.2 PLCP frame format 18.3.2.2 Overview of the PPDU encoding process
239	18.3.5 DATA field 18.3.5.5 PLCP DATA scrambler and descrambler
241	18.3.9 PMD transmit specifications 18.3.9.3 Transmit spectrum mask 18.3.9.7 Modulation accuracy 18.3.9.7.2 Transmitter center frequency leakage
242	19. Extended Rate PHY (ERP) specification 19.3 Extended Rate PLCP sublayer 19.3.3 PLCP data modulation and rate change 19.3.3.4 Long and short DSSS-OFDM PLCP format 19.3.3.4.1 General
243	20. High Throughput (HT) PHY specification 20.1 Introduction 20.1.1 Introduction to the HT PHY 20.3 HT PLCP sublayer 20.3.10 Transmission of NON_HT format PPDUs with more than one antenna transmit chain 20.3.11 Data field 20.3.11.3 Scrambler 20.3.20 PMD transmit specification 20.3.20.1 Transmit spectrum mask 20.3.20.7 Modulation accuracy 20.3.20.7.2 Transmit center frequency leakage
244	22. Very High Throughput (VHT) PHY specification 22.1 Introduction 22.1.1 Introduction to the VHT PHY
245	22.1.2 Scope 22.1.3 VHT PHY functions 22.1.3.1 General 22.1.3.2 PHY management entity (PLME) 22.1.3.3 Service specification method 22.1.4 PPDU formats
246	22.2 VHT PHY service interface 22.2.1 Introduction 22.2.2 TXVECTOR and RXVECTOR parameters
254	22.2.3 Effects of CH_BANDWIDTH parameter on PPDU format
256	22.2.4 Support for NON_HT and HT formats 22.2.4.1 General
258	22.2.4.2 Support for NON_HT format when NON_HT_MODULATION is OFDM
259	22.2.4.3 Support for HT formats 22.3 VHT PHY layer 22.3.1 Introduction 22.3.2 VHT PPDU format
260	22.3.3 Transmitter block diagram
264	22.3.4 Overview of the PPDU encoding process 22.3.4.1 General 22.3.4.2 Construction of L-STF
265	22.3.4.3 Construction of the L-LTF
266	22.3.4.4 Construction of L-SIG
267	22.3.4.5 Construction of VHT-SIG-A
268	22.3.4.6 Construction of VHT-STF
269	22.3.4.7 Construction of VHT-LTF
271	22.3.4.8 Construction of VHT-SIG-B 22.3.4.9 Construction of the Data field in a VHT SU PPDU 22.3.4.9.1 Using BCC
272	22.3.4.9.2 Using LDPC
273	22.3.4.10 Construction of the Data field in a VHT MU PPDU 22.3.4.10.1 General 22.3.4.10.2 Using BCC 22.3.4.10.3 Using LDPC 22.3.4.10.4 Combining to form a VHT MU PPDU 22.3.5 VHT modulation and coding scheme (VHT-MCS)
274	22.3.6 Timing-related parameters
277	22.3.7 Mathematical description of signals 22.3.7.1 Notation 22.3.7.2 Subcarrier indices in use
278	22.3.7.3 Channel frequencies
279	22.3.7.4 Transmitted signal
283	22.3.7.5 Definition of tone rotation
284	22.3.8 VHT preamble 22.3.8.1 Introduction 22.3.8.2 Non-VHT portion of VHT format preamble 22.3.8.2.1 Cyclic shift for pre-VHT modulated fields
285	22.3.8.2.2 L-STF definition 22.3.8.2.3 L-LTF definition
286	22.3.8.2.4 L-SIG definition
288	22.3.8.3 VHT portion of VHT format preamble 22.3.8.3.1 Introduction 22.3.8.3.2 Cyclic shift for VHT modulated fields 22.3.8.3.3 VHT-SIG-A definition
293	22.3.8.3.4 VHT-STF definition
294	22.3.8.3.5 VHT-LTF definition
298	22.3.8.3.6 VHT-SIG-B definition
302	22.3.9 Transmission of NON_HT and HT PPDUs with multiple transmit chains 22.3.9.1 Transmission of 20 MHz NON_HT PPDUs with more than one transmit chain 22.3.9.2 Transmission of HT PPDUs with more than four transmit chains 22.3.10 Data field 22.3.10.1 General
303	22.3.10.2 SERVICE field 22.3.10.3 CRC calculation for VHT-SIG-B
304	22.3.10.4 Scrambler 22.3.10.5 Coding 22.3.10.5.1 General 22.3.10.5.2 BCC encoder parsing operation
305	22.3.10.5.3 Binary convolutional coding and puncturing 22.3.10.5.4 LDPC coding 22.3.10.5.5 Encoding process for VHT MU PPDUs
307	22.3.10.6 Stream parser
308	22.3.10.7 Segment parser
309	22.3.10.8 BCC interleaver
312	22.3.10.9 Constellation mapping 22.3.10.9.1 General
317	22.3.10.9.2 LDPC tone mapping
318	22.3.10.9.3 Segment deparser 22.3.10.9.4 Space-time block coding
319	22.3.10.10 Pilot subcarriers
321	22.3.10.11 OFDM modulation 22.3.10.11.1 Transmission in VHT format
322	22.3.10.12 Non-HT duplicate transmission
323	22.3.11 SU-MIMO and DL-MU-MIMO Beamforming 22.3.11.1 General
324	22.3.11.2 Beamforming Feedback Matrix V 22.3.11.3 Maximum Number of Total Spatial Streams in VHT MU PPDUs
325	22.3.11.4 Group ID 22.3.12 VHT preamble format for sounding PPDUs
326	22.3.13 Regulatory requirements 22.3.14 Channelization
327	22.3.15 Transmit RF delay 22.3.16 Slot time 22.3.17 Transmit and receive port impedance
328	22.3.18 VHT transmit specification 22.3.18.1 Transmit spectrum mask
331	22.3.18.2 Spectral flatness
333	22.3.18.3 Transmit center frequency and symbol clock frequency tolerance 22.3.18.4 Modulation accuracy 22.3.18.4.1 Introduction to modulation accuracy tests 22.3.18.4.2 Transmit center frequency leakage 22.3.18.4.3 Transmitter constellation error
334	22.3.18.4.4 Transmitter modulation accuracy (EVM) test
335	22.3.18.5 Time of Departure accuracy
336	22.3.19 VHT receiver specification 22.3.19.1 Receiver minimum input sensitivity 22.3.19.2 Adjacent channel rejection
337	22.3.19.3 Nonadjacent channel rejection
338	22.3.19.4 Receiver maximum input level 22.3.19.5 CCA sensitivity 22.3.19.5.1 General 22.3.19.5.2 CCA sensitivity for operating classes requiring CCA-ED 22.3.19.5.3 CCA sensitivity for signals occupying the primary 20 MHz channel
339	22.3.19.5.4 CCA sensitivity for signals not occupying the primary 20 MHz channel
340	22.3.19.6 RSSI 22.3.20 PHY transmit procedure
343	22.3.21 PHY receive procedure
348	22.4 VHT PLME 22.4.1 PLME_SAP sublayer management primitives 22.4.2 PHY MIB
351	22.4.3 TXTIME and PSDU_LENGTH calculation
353	22.4.4 PHY characteristics 22.5 Parameters for VHT-MCSs
370	Annex B (normative) Protocol Implementation Conformance Statement (PICS) proforma B.2 Abbreviations and special symbols B.2.2 General abbreviations for Item and Support columns B.4 PICS proforma—IEEE Std 802.11- B.4.3 IUT configuration
371	B.4.4 MAC protocol B.4.4.1 MAC protocol capabilities B.4.4.2 MAC frames
372	B.4.12 Spectrum management extensions
373	B.4.18 DSE functions
375	B.4.19 High-throughput (HT) features B.4.19.1 HT MAC features
376	B.4.27 Very high throughput (VHT) features B.4.27.1 VHT MAC features
378	B.4.27.2 VHT PHY features
383	Annex C (normative) ASN.1 encoding of the MAC and PHY MIB C.3 MIB Detail
404	Annex D (normative) Regulatory references D.1 External regulatory references
405	D.2 Radio performance specifications D.2.5 CCA-ED threshold
406	Annex E (normative) Country elements and operating classes E.1 Country information and operating classes
412	E.2 Band-specific operating requirements E.2.2 3650–3700 MHz in the United States
413	Annex G (normative) Frame exchange sequences G.1 General
414	G.4 HT and VHT sequences
418	Annex M (informative) RSNA reference implementations and test vectors M.6 Additional test vectors M.6.4 CCMP-128 test vector
419	M.7 Key hierarchy test vectors for pairwise keys M.7.1 General M.7.2 CCMP-128 pairwise key derivation M.9 Management frame protection test vectors M.9.1 BIP-CMAC-128 with broadcast Deauthentication frame
420	M.9.2 CCMP-128 with unicast Deauthentication frame
421	M.11 GCMP M.11.1 Test vector
422	Annex S (informative) Additional VHT and HT Information S.1 VHT and HT waveform generator tool S.4 Illustration of determination of NDP addresses
423	Annex T (informative) Location and Time Difference accuracy test T.2 Time Difference of departure accuracy test
424	Annex V (informative) Interworking with external networks V.2 Network discovery and selection V.2.4 Sales meeting
425	Annex W (informative) Mesh BSS operation W.1 Clarification of Mesh Data frame format

Additional information

Standard Title	IEEE Standard for Information technology–Telecommunications and information exchange between systems—Local and metropolitan area networks–Specific requirements–Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications–Amendment 4: Enhancements for Very High Throughput for Operation in Bands below 6 GHz.
Published Code	IEEE
Publication Date	2013

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