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首页IEEE 802.11ad-2012标准:60GHz频段的极高吞吐量增强
IEEE 802.11ad-2012标准:60GHz频段的极高吞吐量增强
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"IEEE Std 802.11ad™-2012.pdf"
IEEE Std 802.11ad 是一个重要的无线局域网(WLAN)标准,由电气和电子工程师协会(IEEE)发布。这个标准是802.11系列的一部分,专门针对60GHz频段的极高吞吐量增强。802.11ad 是在2012年制定的,对原有的802.11标准进行了修订,同时考虑了802.11ae和802.11aa的修正内容。
802.11ad 的主要目标是提供比传统Wi-Fi更高的数据传输速率,通常可达到4.6到7 Gbps,远超过2.4GHz和5GHz频段的Wi-Fi标准。这种高速率的实现得益于60GHz频段的宽广带宽,尽管该频段的无线信号传播特性相对较差,但适合短距离、高数据需求的应用,如高清视频传输、虚拟现实和游戏。
标准中的“Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications”部分涵盖了MAC层和物理层的详细规格。MAC层负责管理网络设备间的通信,包括访问控制、错误检测和纠正,以及流量控制等。而PHY层则规定了数据如何在物理介质上传输,包括调制解调方式、编码方案和射频参数。
在60GHz频段,802.11ad 使用了称为“毫米波”(mmWave)的技术,该技术允许使用更小的天线,从而可以集成在小型设备中。此外,802.11ad 还采用了多输入多输出(MIMO)技术,通过多个天线同时发送和接收数据来提升性能。为了解决信号衰减问题,802.11ad 实现了视线传播(Line-of-Sight, LOS)和波束成形(Beamforming)技术,以提高信号定向性和减少干扰。
802.11ad 标准还涉及到授权许可和使用限制,如在下载时的声明,表明该标准文件仅限于HEC蒙特利尔大学使用,并且从IEEE Xplore下载时存在特定的使用条件。
IEEE Std 802.11ad 是一种创新的无线通信技术,旨在提供高速、低延迟的连接,为现代高数据需求的应用提供了强大的支持。它对于家庭、办公室以及需要快速无线传输的环境,如无线回传、物联网设备之间的连接,乃至未来5G网络的某些应用场景,都具有重要的意义。
xiv Copyright © 2012 IEEE. All rights reserved.
10.2 Power management............................................................................................................... 342
10.2.1 Power management in an non-DMG infrastructure network ............................... 342
10.2.4 SM power save ..................................................................................................... 342
10.2.5 Power management in a PBSS and DMG infrastructure BSS ............................. 342
10.3 STA authentication and association ..................................................................................... 349
10.3.1 State variables....................................................................................................... 349
10.3.2 State transition diagram for nonmesh STAs......................................................... 350
10.3.3 Frame filtering based on STA state ...................................................................... 351
10.3.4 Authentication and deauthentication .................................................................... 353
10.3.5 Association, reassociation, and disassociation ..................................................... 354
10.3.6 Additional mechanisms for an AP collocated with a mesh STA ......................... 363
10.3.7 Communicating PBSS information ...................................................................... 363
10.4 TS operation ......................................................................................................................... 363
10.4.1 Introduction .......................................................................................................... 363
10.4.2 TSPEC Construction............................................................................................. 365
10.4.3 TS life cycle.......................................................................................................... 365
10.4.4 TS Setup ............................................................................................................... 366
10.4.7 Failed TS Setup .................................................................................................... 369
10.4.8 Data Transfer ........................................................................................................ 369
10.4.9 TS Deletion........................................................................................................... 370
10.4.10 TS Timeout ........................................................................................................... 370
10.4.13 DMG allocation formats ....................................................................................... 372
10.4.14 PTP TS Operation................................................................................................. 373
10.5 Block Ack operation............................................................................................................. 373
10.5.2 Setup and modification of the Block Ack parameters .......................................... 373
10.7 DLS operation....................................................................................................................... 374
10.7.1 General.................................................................................................................. 374
10.8 TPC procedures ................................................................................................................... 375
10.8.1 General.................................................................................................................. 375
10.8.2 Association based on transmit power capability .................................................. 375
10.8.4 Specification of regulatory and local maximum transmit power levels ............... 375
10.8.6 Adaptation of the transmit power ......................................................................... 376
10.9 DFS procedures ................................................................................................................... 376
10.9.1 General.................................................................................................................. 376
10.9.2 Association based on supported channels ........................................................... 377
10.9.3 Quieting channels for testing ............................................................................... 377
10.9.7 Requesting and reporting of measurements ......................................................... 377
10.9.8 Selecting and advertising a new channel .............................................................. 378
10.11 Radio measurement procedures............................................................................................ 379
10.11.6 Requesting and reporting of measurements.......................................................... 379
10.11.8 Triggered autonomous reporting .......................................................................... 379
10.11.11 Link Measurement................................................................................................ 379
10.11.14 Multiple BSSID Set .............................................................................................. 380
10.11.16 Access Delay Measurement.................................................................................. 380
10.22 Tunneled direct-link setup .................................................................................................... 380
10.22.1 General..................................................................................................................380
10.23 Wireless network management procedures .......................................................................... 380
10.23.14 Channel usage procedures .................................................................................... 380
10.23.15 Group addressed transmission service.................................................................. 381
10.24 WLAN interworking with external networks procedures .................................................... 382
10.24.3 Interworking procedures: generic advertisement service (GAS).......................... 382
10.27 Procedures to manage OBSS ................................................................................................ 382
10.28 DMG beamformed link and BSS maintenance .................................................................... 382
10.28.1 Beamformed link maintenance............................................................................. 382
Authorized licensed use limited to: HEC Universite de Montreal. Downloaded on July 08,2015 at 19:50:16 UTC from IEEE Xplore. Restrictions apply.
Copyright © 2012 IEEE. All rights reserved. xv
10.28.2 PCP Handover ...................................................................................................... 385
10.29 DMG BSS peer and service discovery ................................................................................ 387
10.29.1 Information Request and Response ...................................................................... 387
10.29.2 Peer Service Discovery......................................................................................... 387
10.30 Changing DMG BSS parameters......................................................................................... 388
10.30.1 General..................................................................................................................388
10.30.2 Moving the TBTT................................................................................................. 388
10.30.3 Changing beacon interval duration....................................................................... 389
10.30.4 Maintaining synchronization in a PCP/AP cluster ............................................... 390
10.30.5 Recommending DMG BSS parameters to the PCP/AP........................................ 390
10.31 Spatial sharing and interference mitigation for DMG STAs................................................ 391
10.31.1 General..................................................................................................................391
10.31.2 Spatial sharing and interference assessment......................................................... 391
10.31.3 Achieving spatial sharing and interference mitigation ......................................... 393
10.31.4 PBSS and infrastructure BSS stability in OBSS scenarios................................... 394
10.32 Multi-band operation ........................................................................................................... 394
10.32.1 General..................................................................................................................394
10.32.2 FST setup protocol................................................................................................ 396
10.32.3 FST teardown ....................................................................................................... 405
10.32.4 On-channel Tunneling (OCT) operation .............................................................. 405
10.32.5 FST payload.......................................................................................................... 407
10.33 MMSL cluster operation...................................................................................................... 407
10.33.1 Introduction .......................................................................................................... 407
10.33.2 MMSL cluster setup ............................................................................................. 408
10.34 DMG coexistence with non-IEEE-802.11 systems .............................................................. 409
10.35 DMG relay procedures ......................................................................................................... 410
10.35.1 General..................................................................................................................410
10.35.2 Common relay setup procedures .......................................................................... 411
10.35.3 Relay operation-type change procedure ............................................................... 412
10.35.4 Relay teardown ..................................................................................................... 413
10.36 Quieting adjacent DMG BSSs .............................................................................................. 413
10.36.1 General..................................................................................................................413
10.36.2 Procedure at the requester AP .............................................................................. 414
10.36.3 Procedure at the responder AP ............................................................................. 414
10.37 DMG beamforming .............................................................................................................. 414
10.38 DMG MAC sublayer parameters.......................................................................................... 417
11. Security ............................................................................................................................................ 419
11.1 Framework............................................................................................................................ 419
11.1.2 Security methods .................................................................................................. 419
11.1.3 RSNA equipment and RSNA capabilities ............................................................ 419
11.1.4 RSNA establishment............................................................................................. 419
11.4 RSNA confidentiality and integrity protocols ..................................................................... 421
11.4.1 Overview .............................................................................................................. 421
11.4.3 CTR with CBC-MAC Protocol (CCMP).............................................................. 421
11.4.4 Broadcast/Multicast Integrity Protocol (BIP)....................................................... 421
11.4.5 GCM with Galois Message Authentication Code (GMAC) Protocol (GCMP) ... 421
11.5 RSNA security association management.............................................................................. 427
11.5.1 Security associations............................................................................................. 427
11.5.2 RSNA selection .................................................................................................... 428
11.5.7a RSNA policy selection in a PBSS ........................................................................ 428
11.5.8 RSNA management of the IEEE 802.1X Controlled Port.................................... 428
11.5.11a RSNA authentication in a PBSS........................................................................... 429
Authorized licensed use limited to: HEC Universite de Montreal. Downloaded on July 08,2015 at 19:50:16 UTC from IEEE Xplore. Restrictions apply.
xvi Copyright © 2012 IEEE. All rights reserved.
11.5.14a RSNA key management in a PBSS ...................................................................... 429
11.5.15 RSNA security association termination................................................................ 429
11.5.18 RSNA rekeying..................................................................................................... 429
11.5.19 Multi-band RSNA ................................................................................................ 430
11.6 Keys and key distribution ..................................................................................................... 433
11.6.2 EAPOL-Key frames ............................................................................................. 433
11.6.6 4-Way Handshake................................................................................................. 434
11.7 Mapping EAPOL keys to IEEE 802.11 keys ....................................................................... 435
11.7.8 Mapping PTK to GCMP keys .............................................................................. 435
13. MLME mesh procedures ................................................................................................................. 437
13.1 Mesh STA dependencies ...................................................................................................... 437
21. Directional multi-gigabit (DMG) PHY specification ...................................................................... 439
21.1 DMG PHY introduction ....................................................................................................... 439
21.1.1 Scope .................................................................................................................... 439
21.1.2 DMG PHY functions ............................................................................................ 439
21.2 DMG PHY service interface................................................................................................. 440
21.2.1 Introduction .......................................................................................................... 440
21.2.2 TXVECTOR and RXVECTOR parameters ......................................................... 440
21.2.3 TXSTATUS parameters ....................................................................................... 442
21.3 Common parameters............................................................................................................. 443
21.3.1 Channelization ...................................................................................................... 443
21.3.2 Transmit mask ..................................................................................................... 443
21.3.3 Common requirements ........................................................................................ 443
21.3.4 Timing-related parameters.................................................................................... 446
21.3.5 Mathematical conventions in the signal description............................................. 447
21.3.6 Common preamble ............................................................................................... 448
21.3.7 HCS calculation for headers of control PHY, OFDM PHY, and SC PHY .......... 451
21.3.8 Common LDPC parity matrices ........................................................................... 451
21.3.9 Scrambler.............................................................................................................. 453
21.3.10 Received channel power indicator (RCPI) measurement..................................... 454
21.4 DMG control PHY................................................................................................................ 454
21.4.1 Introduction .......................................................................................................... 454
21.4.2 Frame format ........................................................................................................ 454
21.4.3 Transmission......................................................................................................... 455
21.4.4 Performance requirements ................................................................................... 458
21.5 DMG OFDM PHY ............................................................................................................... 459
21.5.1 Introduction .......................................................................................................... 459
21.5.2 Frame format ........................................................................................................ 459
21.5.3 Transmission......................................................................................................... 459
21.5.4 Performance requirements ................................................................................... 468
21.6 DMG SC PHY ...................................................................................................................... 470
21.6.1 Introduction .......................................................................................................... 470
21.6.2 Frame format ........................................................................................................ 470
21.6.3 Transmission......................................................................................................... 470
21.6.4 Performance requirements ................................................................................... 477
21.7 DMG low-power SC PHY.................................................................................................... 478
21.7.1 Introduction .......................................................................................................... 478
21.7.2 Transmission......................................................................................................... 479
21.8 PLCP transmit procedure...................................................................................................... 482
21.9 PLCP receive procedure ....................................................................................................... 485
Authorized licensed use limited to: HEC Universite de Montreal. Downloaded on July 08,2015 at 19:50:16 UTC from IEEE Xplore. Restrictions apply.
Copyright © 2012 IEEE. All rights reserved. xvii
21.10 Beamforming ........................................................................................................................ 487
21.10.1 Beamforming concept........................................................................................... 487
21.10.2 Beamforming PHY frame format ......................................................................... 487
21.11 Golay sequences ................................................................................................................... 490
21.12 DMG PLME ......................................................................................................................... 491
21.12.1 PLME_SAP sublayer management primitives ..................................................... 491
21.12.2 DMG PHY MIB ................................................................................................... 491
21.12.3 TXTIME calculation............................................................................................. 492
21.12.4 PHY characteristics .............................................................................................. 492
21.13 DMG PMD sublayer............................................................................................................. 494
21.13.1 Scope and field of application .............................................................................. 494
21.13.2 Overview of service.............................................................................................. 494
21.13.3 Overview of interactions ...................................................................................... 494
21.13.4 Basic service and options ..................................................................................... 494
21.13.5 PMD_SAP detailed service specification............................................................. 495
Annex B (normative) Protocol Implementation Conformance Statement (PICS) proforma....................... 499
B.4 PICS proforma...................................................................................................................... 499
B.4.3 IUT configuration ................................................................................................. 499
B.4.4 MAC protocol....................................................................................................... 500
B.4.14 QoS base functionality.......................................................................................... 505
B.4.15 QoS enhanced distributed channel access (EDCA).............................................. 506
B.4.17 Radio management extensions ............................................................................. 507
B.4.26 DMG features ..................................................................................................... 508
Annex C (normative) ASN.1 encoding of the MAC and PHY MIB........................................................... 517
C.3 MIB Detail............................................................................................................................ 517
Annex E (normative) Country elements and operating classes ................................................................... 539
E.1 Country information and operating classes .......................................................................... 539
Annex H (normative) Usage of Ethertype 89-0d......................................................................................... 541
Annex L (informative) Examples of encoding a frame for OFDM PHYs and DMG PHYs
....................... 543
L.4 DMG example data vectors .................................................................................................. 543
L.5 DMG Example 1 – CPHY encoding .................................................................................... 544
L.5.1 CPHY preamble.................................................................................................... 544
L.5.2 CPHY header........................................................................................................ 545
L.5.3 CPHY payload...................................................................................................... 547
L.6 DMG Example 2 – SC PHY encoding ................................................................................. 548
L.6.1 sC PHY Preamble................................................................................................. 548
L.6.2 SC PHY header..................................................................................................... 549
L.6.3 SC PHY payload................................................................................................... 552
L.7 DMG Example 3 – OFDM PHY encoding .......................................................................... 557
L.7.1 OFDM PHY preamble.......................................................................................... 557
L.7.2 OFDM PHY header coding .................................................................................. 558
L.7.3 OFDM PHY header modulation........................................................................... 560
L.7.4 OFDM PHY payload coding ................................................................................ 561
L.7.5 OFDM PHY MCS14 payload modulation ........................................................... 562
L.7.6 OFDM PHY MCS17 payload modulation ........................................................... 564
Authorized licensed use limited to: HEC Universite de Montreal. Downloaded on July 08,2015 at 19:50:16 UTC from IEEE Xplore. Restrictions apply.
xviii Copyright © 2012 IEEE. All rights reserved.
L.7.7 OFDM PHY MCS19 payload modulation ........................................................... 566
L.7.8 OFDM PHY MCS23 payload modulation ........................................................... 568
L.8 DMG Example 4 – LP SC PHY encoding ........................................................................... 569
L.8.1 LP SC PHY preamble........................................................................................... 569
L.8.2 LP SC PHY header ............................................................................................... 570
L.8.3 LP SC PHY MCS26 payload................................................................................ 573
L.8.4 LP SC PHY MCS30 payload................................................................................ 574
Annex M (informative) RSNA reference implementations and test vectors............................................... 577
M.11 GCMP................................................................................................................................... 577
M.11.1 Test vector ............................................................................................................ 577
M.11.2 Example of encryption C code ............................................................................. 579
Annex N (informative) Admission control .................................................................................................. 593
N.3 Guidelines and reference design for sample scheduler and admission control unit ............. 593
N.3.3 Reference design for sample scheduler and admission control unit..................... 593
Annex Y (informative) Functions of the centralized coordination service root (CCSR) ............................ 595
Annex Z (informative) TSPEC aggregation for DMG BSSs ...................................................................... 597
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