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10.6.5 Rate selection for Data and Management frames ...................................................... 244
10.6.5.1 Rate selection for non-STBC Beacon and non-STBC PSMP frames...... 244
10.6.5.3 Rate selection for other group addressed Data and Management frames 245
10.6.6 Rate selection for Control frames .............................................................................. 245
10.6.6.1 General rules for rate selection for Control frames ................................. 245
10.6.6.6 Channel Width selection for Control frames ........................................... 245
10.6.10 Modulation classes..................................................................................................... 246
10.6.11 Non-HT basic rate calculation ................................................................................... 247
10.6.12 Channel Width in non-HT and non-HT duplicate PPDUs ........................................ 248
10.6.13 Rate selection constraints for VHT STAs.................................................................. 248
10.6.13.3 Additional rate selection constraints for VHT PPDUs ............................ 248
10.8 HT Control field operation ...................................................................................................... 249
10.9 Control Wrapper operation ...................................................................................................... 251
10.11 A-MSDU operation.................................................................................................................. 251
10.12 A-MPDU operation.................................................................................................................. 252
10.12.1 A-MPDU contents ..................................................................................................... 252
10.12.2 A-MPDU length limit rules ....................................................................................... 252
10.12.3 Minimum MPDU Sstart Sspacing field rules ............................................................ 254
10.12.4 A-MPDU aggregation of group addressed Data frames ............................................ 254
10.12.6 A-MPDU padding for VHT PPDU, HE, or S1G PPDU............................................ 256
10.12.7 Setting the EOF/Tag field of the MPDU delimiter.................................................... 256
10.13 PPDU duration constraint ........................................................................................................ 256
10.15 Low-density parity check code (LDPC) operation .................................................................. 256
10.22 Operation across regulatory domains ...................................................................................... 257
10.22.3 Operation with operating classes ............................................................................... 257
10.22.4 Operation with the Transmit Power Envelope element ............................................. 258
10.23 HCF.......................................................................................................................................... 259
10.23.1 General....................................................................................................................... 259
10.23.2 HCF contention based channel access (EDCA) ........................................................ 259
10.23.2.2 EDCA backoff procedure ........................................................................ 259
10.23.2.4 Obtaining an EDCA TXOP ..................................................................... 260
10.23.2.5 EDCA channel access in a VHT, HE, or TVHT BSS ............................. 261
10.23.2.7 Sharing an EDCA TXOP......................................................................... 262
10.23.2.8 Multiple frame transmission in an EDCA TXOP.................................... 263
10.23.2.9 TXOP limits............................................................................................. 265
10.23.2.10 Truncation of TXOP ................................................................................ 267
10.23.2.11 Termination of TXOP.............................................................................. 267
10.23.2.12 Retransmit procedures ............................................................................. 267
10.23.3 HCF controlled channel access (HCCA) ................................................................... 268
10.23.3.5 HCCA transfer rules ................................................................................ 268
10.25 Block acknowledgment (block ack) ........................................................................................ 268
10.25.2 Setup and modification of the block ack parameters................................................. 268
10.25.5 Selection of BlockAck and BlockAckReq variants................................................... 268
10.25.6 HT-immediate block ack extensions.......................................................................... 269
10.25.6.1 Introduction to HT-immediate block ack extensions............................... 269
10.25.6.3 Scoreboard context control during full-state operation ........................... 270
10.25.6.5 Generation and transmission of BlockAck frames by an HT STA,
DMG STA, or S1G STA.......................................................................... 270
10.25.6.6 Receive reordering buffer control operation............................................ 270
10.25.8 GCR and GLK-GCR block ack ................................................................................. 271
10.25.8.1 Introduction General ................................................................................ 271
10.25.8.4 GCR block ack BlockAckReq and BlockAck frame exchanges ............. 271
10.27 Protection mechanisms ............................................................................................................ 273
10.27.6 Protection rules for HE STAs .................................................................................... 273
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