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首页IEEE发布802.11协议2020版:无线局域网MAC和PHY规范。
IEEE发布802.11协议2020版:无线局域网MAC和PHY规范。
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更新于2024-03-20
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IEEE 802.11协议是一项关于无线局域网(Wireless LAN)介质访问控制(MAC)和物理层(PHY)规范的信息技术标准。2020年版本的IEEE 802.11协议由IEEE计算机学会的局域网/城域网标准委员会开发,是对2016年版本的修订。这一标准旨在规定无线局域网设备之间如何进行有效通信,包括信道访问控制、数据传输和物理层连接等方面。IEEE 802.11标准致力于提高无线局域网的性能、稳定性和安全性,以满足当今不断增长的无线通信需求。
IEEE 802.11协议的2020版本涵盖了一系列关于无线局域网技术的关键规范和指导。该标准的修订版本加入了一些新的特性和改进,旨在提升无线局域网设备的性能和效率。通过更新和完善无线局域网设备的介质访问控制和物理层规范,IEEE 802.11协议为用户提供了更好的连接体验和更快的数据传输速度。该协议还通过引入新技术,如多用户MIMO(MU-MIMO)和增强的信道利用技术,进一步优化了无线局域网的性能。
IEEE 802.11协议的2020版本对无线局域网设备的互操作性和兼容性提出了更高要求。通过标准化无线局域网设备之间的通信方式和技术规范,该标准有助于不同厂商生产的设备在同一网络中实现互联互通。此外,IEEE 802.11协议还要求无线局域网设备具备一定的安全性能,以防止潜在的网络攻击和数据泄露。通过加强认证和加密机制,这一标准有助于确保用户信息在无线通信中的安全性和隐私性。
总的来说,IEEE 802.11协议的2020版本是一项关键的无线局域网技术标准,为用户和厂商提供了良好的通信指引和技术指导。通过标准化无线局域网设备的介质访问控制和物理层规范,该协议促进了无线局域网技术的进步和发展。同时,该标准还对无线局域网设备的性能、安全性和互操作性提出了更高要求,有助于确保无线通信的稳定性和可靠性。IEEE 802.11协议的2020版本将继续推动无线局域网技术的创新和进步,为用户提供更快速、更安全、更可靠的无线通信服务。
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Copyright © 2021 IEEE. All rights reserved.
4.3.24.4 Mirrored stream classification service (MSCS).................................. 250
4.3.24.5 Overlapping BSS (OBSS) management ............................................. 250
4.3.24.6 Interworking with IEEE 802.1Q Stream Reservation Protocol (SRP) 250
4.3.24.7 Intra-access category prioritization..................................................... 250
4.3.25 Operation under geolocation database (GDB) control .......................................... 251
4.3.26 CDMG STA........................................................................................................... 252
4.3.27 CMMG STA .......................................................................................................... 253
4.3.28 General link (GLK)................................................................................................ 254
4.3.28.1 General ................................................................................................ 254
4.3.28.2 Selective reception of group addressed frames................................... 254
4.3.28.3 GLK Service Sets................................................................................ 255
4.3.29 Ethertype protocol discrimination (EPD) .............................................................. 259
4.4 Logical service interfaces ...................................................................................................... 260
4.4.1 General................................................................................................................... 260
4.4.2 SS ........................................................................................................................... 260
4.4.3 PBSS control point service (PCPS) ....................................................................... 261
4.4.4 DSS ........................................................................................................................ 261
4.5 Overview of the services........................................................................................................ 262
4.5.1 General................................................................................................................... 262
4.5.2 Distribution of MSDUs within a DS...................................................................... 263
4.5.2.1 Distribution ......................................................................................... 263
4.5.2.2 Integration ........................................................................................... 264
4.5.2.3 QoS traffic scheduling ........................................................................ 264
4.5.3 Connectivity-related services................................................................................. 264
4.5.3.1 General ................................................................................................ 264
4.5.3.2 Mobility types ..................................................................................... 265
4.5.3.3 Association.......................................................................................... 265
4.5.3.4 Reassociation ...................................................................................... 266
4.5.3.5 Disassociation ..................................................................................... 266
4.5.4 Access control and data confidentiality services ................................................... 267
4.5.4.1 General ................................................................................................ 267
4.5.4.2 Authentication..................................................................................... 267
4.5.4.3 Deauthentication ................................................................................. 268
4.5.4.4 Data confidentiality............................................................................. 269
4.5.4.5 Key management................................................................................. 270
4.5.4.6 Data origin authenticity....................................................................... 270
4.5.4.7 Replay detection.................................................................................. 270
4.5.4.8 Fast BSS transition.............................................................................. 270
4.5.4.9 Management frame protection ............................................................ 270
4.5.4.10 MAC privacy enhancements............................................................... 271
4.5.5 Spectrum management services............................................................................. 271
4.5.5.1 General ................................................................................................ 271
4.5.5.2 TPC ..................................................................................................... 271
4.5.5.3 DFS ..................................................................................................... 271
4.5.6 Traffic differentiation and QoS support................................................................. 272
4.5.6.1 General ................................................................................................ 272
4.5.6.2 Quality-of-service management frame support................................... 272
4.5.7 Support for higher layer timer synchronization ..................................................... 272
4.5.8 Radio measurement service ................................................................................... 273
4.5.9 Interworking with external networks ..................................................................... 273
4.5.9.1 General ................................................................................................ 273
4.5.9.2 Preassociation discovery (PAD) ......................................................... 274
4.5.10 Generic advertisement service (GAS) ................................................................... 275
4.6 Multiple logical address spaces ............................................................................................. 276
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Copyright © 2021 IEEE. All rights reserved.
4.7 Differences among ESS, PBSS, and IBSS LANs.................................................................. 276
4.8 Differences between ESS and MBSS LANs ......................................................................... 278
4.9 Reference model .................................................................................................................... 279
4.9.1 General................................................................................................................... 279
4.9.2 Interworking reference model................................................................................ 279
4.9.3 Reference model for supporting multiple MAC sublayers .................................... 281
4.9.4 Reference model for multi-band operation ............................................................ 282
4.10 IEEE Std 802.11 and IEEE Std 802.1X-2010 ....................................................................... 284
4.10.1 General................................................................................................................... 284
4.10.2 IEEE 802.11 usage of IEEE Std 802.1X-2010 ...................................................... 284
4.10.3 Infrastructure functional model overview.............................................................. 284
4.10.3.1 General ................................................................................................ 284
4.10.3.2 AKM operations with AS ................................................................... 284
4.10.3.3 AKM operations with a password or PSK.......................................... 287
4.10.3.4 Alternate operations with PSK............................................................ 288
4.10.3.5 Disassociation ..................................................................................... 288
4.10.3.6 AKM operations using FILS authentication ....................................... 288
4.10.4 IBSS functional model description ........................................................................ 289
4.10.4.1 General ................................................................................................ 289
4.10.4.2 Key usage............................................................................................ 289
4.10.4.3 Sample IBSS 4-way handshakes......................................................... 290
4.10.4.4 IBSS IEEE 802.1X example ............................................................... 291
4.10.5 PBSS functional model description ....................................................................... 292
4.10.6 Authenticator-to-AS protocol ................................................................................ 293
4.10.7 PMKSA caching .................................................................................................... 293
4.10.8 Protection of group addressed robust Management frames................................... 294
5. MAC service definition ................................................................................................................... 295
5.1 Overview of MAC services ................................................................................................... 295
5.1.1 Data service............................................................................................................ 295
5.1.1.1 General ................................................................................................ 295
5.1.1.2 Determination of UP ........................................................................... 295
5.1.1.3 Interpretation of priority parameter in MAC service primitives......... 295
5.1.1.4 Interpretation of service class parameter in MAC service
primitives in a STA ............................................................................. 296
5.1.2 Security services .................................................................................................... 297
5.1.3 MSDU ordering ..................................................................................................... 297
5.1.4 MSDU format ........................................................................................................ 298
5.1.5 MAC data service architecture .............................................................................. 299
5.1.5.1 General ................................................................................................ 299
5.1.5.2 Non-GLK non-AP STA role ............................................................... 302
5.1.5.3 Non-GLK AP role............................................................................... 302
5.1.5.4 Non-GLK mesh STA role ................................................................... 303
5.1.5.5 Mesh gate role..................................................................................... 303
5.1.5.6 S1G relay............................................................................................. 303
5.1.5.7 GLK STA role..................................................................................... 305
5.1.5.8 GLK AP role ....................................................................................... 305
5.1.5.9 GLK mesh STA role ........................................................................... 305
5.2 MAC data service specification............................................................................................. 307
5.2.1 General................................................................................................................... 307
5.2.2 GLK MAC data service specification.................................................................... 307
5.2.3 MA-UNITDATA.request ...................................................................................... 307
5.2.3.1 Function .............................................................................................. 307
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Copyright © 2021 IEEE. All rights reserved.
5.2.3.2 Semantics of the service primitive ...................................................... 307
5.2.3.3 When generated................................................................................... 308
5.2.3.4 Effect of receipt................................................................................... 308
5.2.4 MA-UNITDATA.indication .................................................................................. 310
5.2.4.1 Function .............................................................................................. 310
5.2.4.2 Semantics of the service primitive ...................................................... 310
5.2.4.3 When generated................................................................................... 311
5.2.4.4 Effect of receipt................................................................................... 311
5.2.5 MA-UNITDATA-STATUS.indication.................................................................. 313
5.2.5.1 Function .............................................................................................. 313
5.2.5.2 Semantics of the service primitive ...................................................... 313
5.2.5.3 When generated................................................................................... 314
5.2.5.4 Effect of receipt................................................................................... 314
6. Layer management........................................................................................................................... 315
6.1 Overview of management model........................................................................................... 315
6.2 Generic management primitives ............................................................................................ 316
6.3 MLME SAP interface ............................................................................................................ 316
6.3.1 Introduction............................................................................................................ 316
6.3.2 Power management................................................................................................ 317
6.3.2.1 Introduction......................................................................................... 317
6.3.2.2 MLME-POWERMGT.request............................................................ 317
6.3.2.3 MLME-POWERMGT.confirm........................................................... 318
6.3.3 Scan........................................................................................................................ 318
6.3.3.1 Introduction......................................................................................... 318
6.3.3.2 MLME-SCAN.request ........................................................................ 318
6.3.3.3 MLME-SCAN.confirm ....................................................................... 322
6.3.3.4 MLME-SCAN-STOP.request ............................................................. 337
6.3.4 Synchronization ..................................................................................................... 337
6.3.4.1 Introduction......................................................................................... 337
6.3.4.2 MLME-JOIN.request .......................................................................... 337
6.3.4.3 MLME-JOIN.confirm ......................................................................... 340
6.3.5 Authenticate ........................................................................................................... 341
6.3.5.1 Introduction......................................................................................... 341
6.3.5.2 MLME-AUTHENTICATE.request .................................................... 341
6.3.5.3 MLME-AUTHENTICATE.confirm ................................................... 342
6.3.5.4 MLME-AUTHENTICATE.indication................................................ 344
6.3.5.5 MLME-AUTHENTICATE.response.................................................. 345
6.3.6 Deauthenticate ....................................................................................................... 347
6.3.6.1 Introduction......................................................................................... 347
6.3.6.2 MLME-DEAUTHENTICATE.request............................................... 347
6.3.6.3 MLME-DEAUTHENTICATE.confirm.............................................. 347
6.3.6.4 MLME-DEAUTHENTICATE.indication .......................................... 348
6.3.7 Associate................................................................................................................ 348
6.3.7.1 Introduction......................................................................................... 348
6.3.7.2 MLME-ASSOCIATE.request............................................................. 349
6.3.7.3 MLME-ASSOCIATE.confirm............................................................ 352
6.3.7.4 MLME-ASSOCIATE.indication ........................................................ 358
6.3.7.5 MLME-ASSOCIATE.response .......................................................... 363
6.3.8 Reassociate............................................................................................................. 367
6.3.8.1 Introduction......................................................................................... 367
6.3.8.2 MLME-REASSOCIATE.request........................................................ 367
6.3.8.3 MLME-REASSOCIATE.confirm....................................................... 371
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Copyright © 2021 IEEE. All rights reserved.
6.3.8.4 MLME-REASSOCIATE.indication ................................................... 377
6.3.8.5 MLME-REASSOCIATE.response ..................................................... 383
6.3.9 Disassociate ........................................................................................................... 388
6.3.9.1 MLME-DISASSOCIATE.request ...................................................... 388
6.3.9.2 MLME-DISASSOCIATE.confirm ..................................................... 388
6.3.9.3 MLME-DISASSOCIATE.indication.................................................. 389
6.3.10 Reset....................................................................................................................... 389
6.3.10.1 Introduction......................................................................................... 389
6.3.10.2 MLME-RESET.request....................................................................... 389
6.3.11 Start........................................................................................................................ 390
6.3.11.1 Introduction......................................................................................... 390
6.3.11.2 MLME-START.request ...................................................................... 390
6.3.11.3 MLME-START.confirm ..................................................................... 396
6.3.12 Stop ........................................................................................................................ 397
6.3.12.1 General ................................................................................................ 397
6.3.12.2 MLME-STOP.request ......................................................................... 397
6.3.13 Protocol layer model for spectrum management and radio measurement............. 398
6.3.14 Measurement request ............................................................................................. 401
6.3.14.1 Introduction......................................................................................... 401
6.3.14.2 MLME-MREQUEST.request ............................................................. 401
6.3.14.3 MLME-MREQUEST.indication......................................................... 402
6.3.15 Channel measurement............................................................................................ 403
6.3.15.1 Introduction......................................................................................... 403
6.3.15.2 MLME-MEASURE.request................................................................ 403
6.3.15.3 MLME-MEASURE.confirm............................................................... 403
6.3.16 Measurement report ............................................................................................... 404
6.3.16.1 Introduction......................................................................................... 404
6.3.16.2 MLME-MREPORT.request................................................................ 404
6.3.16.3 MLME-MREPORT.indication ........................................................... 405
6.3.17 Channel switch....................................................................................................... 406
6.3.17.1 MLME-CHANNELSWITCH.request ................................................ 406
6.3.17.2 MLME-CHANNELSWITCH.confirm ............................................... 407
6.3.17.3 MLME-CHANNELSWITCH.indication............................................ 408
6.3.17.4 MLME-CHANNELSWITCH.response.............................................. 409
6.3.18 TPC request............................................................................................................ 410
6.3.18.1 Introduction......................................................................................... 410
6.3.18.2 MLME-TPCADAPT.request .............................................................. 410
6.3.18.3 MLME-TPCADAPT.confirm ............................................................. 411
6.3.19 SetKeys .................................................................................................................. 412
6.3.19.1 MLME-SETKEYS.request ................................................................. 412
6.3.20 DeleteKeys............................................................................................................. 413
6.3.20.1 MLME-DELETEKEYS.request ......................................................... 413
6.3.21 MIC (michael) failure event .................................................................................. 414
6.3.21.1 MLME-MICHAELMICFAILURE.indication.................................... 414
6.3.22 EAPOL................................................................................................................... 415
6.3.22.1 MLME-EAPOL.request...................................................................... 415
6.3.22.2 MLME-EAPOL.confirm..................................................................... 416
6.3.23 SetProtection.......................................................................................................... 416
6.3.23.1 MLME-SETPROTECTION.request................................................... 416
6.3.24 MLME-PROTECTEDFRAMEDROPPED ........................................................... 417
6.3.24.1 MLME-PROTECTEDFRAMEDROPPED.indication ....................... 417
6.3.25 TS management interface ...................................................................................... 418
6.3.25.1 General ................................................................................................ 418
6.3.25.2 MLME-ADDTS.request ..................................................................... 419
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Copyright © 2021 IEEE. All rights reserved.
6.3.25.3 MLME-ADDTS.confirm .................................................................... 421
6.3.25.4 MLME-ADDTS.indication ................................................................. 424
6.3.25.5 MLME-ADDTS.response ................................................................... 426
6.3.25.6 MLME-DELTS.request ...................................................................... 429
6.3.25.7 MLME-DELTS.indication.................................................................. 430
6.3.25.8 MLME-ADDTSRESERVE.request.................................................... 431
6.3.25.9 MLME-ADDTSRESERVE.confirm................................................... 432
6.3.25.10 MLME-ADDTSRESERVE.indication ............................................... 433
6.3.25.11 MLME-ADDTSRESERVE.response ................................................. 434
6.3.26 Higher layer synchronization support.................................................................... 434
6.3.26.1 Introduction......................................................................................... 434
6.3.26.2 MLME-HL-SYNC.request ................................................................. 435
6.3.26.3 MLME-HL-SYNC.indication ............................................................. 435
6.3.27 Block Ack .............................................................................................................. 436
6.3.27.1 General ................................................................................................ 436
6.3.27.2 MLME-ADDBA.request..................................................................... 436
6.3.27.3 MLME-ADDBA.confirm ................................................................... 437
6.3.27.4 MLME-ADDBA.indication ................................................................ 439
6.3.27.5 MLME-ADDBA.response .................................................................. 440
6.3.27.6 MLME-DELBA.request ..................................................................... 441
6.3.27.7 MLME-DELBA.indication ................................................................. 442
6.3.28 Schedule element management.............................................................................. 443
6.3.28.1 Introduction......................................................................................... 443
6.3.28.2 MLME-SCHEDULE.request.............................................................. 443
6.3.28.3 MLME-SCHEDULE.indication ......................................................... 444
6.3.29 Vendor-specific action........................................................................................... 445
6.3.29.1 Introduction......................................................................................... 445
6.3.29.2 MLME-VSPECIFIC.request............................................................... 445
6.3.29.3 MLME-VSPECIFIC.indication .......................................................... 446
6.3.30 Neighbor report request ......................................................................................... 447
6.3.30.1 General ................................................................................................ 447
6.3.30.2 MLME-NEIGHBORREPREQ.request............................................... 447
6.3.30.3 MLME-NEIGHBORREPREQ.indication .......................................... 448
6.3.31 Neighbor report response....................................................................................... 449
6.3.31.1 General ................................................................................................ 449
6.3.31.2 MLME-NEIGHBORREPRESP.request ............................................. 449
6.3.31.3 MLME-NEIGHBORREPRESP.indication......................................... 450
6.3.32 Link Measure Request ........................................................................................... 451
6.3.32.1 General ................................................................................................ 451
6.3.32.2 MLME-LINKMEASURE.request ...................................................... 451
6.3.32.3 MLME-LINKMEASURE.confirm ..................................................... 452
6.3.33 MLME SAP interface for resource request ........................................................... 453
6.3.33.1 MLME-RESOURCE-REQUEST.request........................................... 453
6.3.33.2 MLME-RESOURCE-REQUEST.indication ...................................... 454
6.3.33.3 MLME-RESOURCE-REQUEST.response ........................................ 455
6.3.33.4 MLME-RESOURCE-REQUEST.confirm ......................................... 455
6.3.33.5 MLME-RESOURCE-REQUEST-LOCAL.request............................ 456
6.3.33.6 MLME-RESOURCE-REQUEST-LOCAL.confirm........................... 457
6.3.34 MLME SAP interface for remote requests ............................................................ 457
6.3.34.1 MLME-REMOTE-REQUEST.request ............................................... 457
6.3.34.2 MLME-REMOTE-REQUEST.indication........................................... 458
6.3.35 Extended channel switch announcement ............................................................... 458
6.3.35.1 General ................................................................................................ 458
6.3.35.2 MLME-EXTCHANNELSWITCH.request......................................... 459
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