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1、IEEE P802.11n/D5.0, May 2008 Copyright 2008 IEEE. All rights reserved.i This is an unapproved IEEE Standards Draft, subject to change. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
2、59 60 61 62 63 64 65 IEEE P802.11n/D5.0 Draft 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: Amen
3、dment 5: Enhancements for Higher Throughput Prepared by the 802.11 Working Group of the 802 Committee Copyright 2008 by the IEEE. Three Park Avenue New York, NY 10016-5997, USA All rights reserved. This document is an unapproved draft of a proposed IEEE Standard. As such, this document is subject to
4、 change. USE AT YOUR OWN RISK! Because this is an unapproved draft, this document must not be uti- lized for any conformance/compliance purposes. Permission is hereby granted for IEEE Standards Commit- tee participants to reproduce this document for purposes of international standardization consider
5、ation. Prior to adoption of this document, in whole or in part, by another standards development organization, permis- sion must first be obtained from the IEEE Standards Activities Department (stds.iprieee.org). Other enti- ties seeking permission to reproduce this document, in whole or in part, mu
6、st also obtain permission from the IEEE Standards Activities Department. IEEE Standards Activities Department 445 Hoes Lane Piscataway, NJ 08854, USA Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=J
7、apan, IHS Not for Resale, 11/15/2008 20:36:43 MSTNo reproduction or networking permitted without license from IHS -,-,- IEEE P802.11n/D5.0, May 2008 iiCopyright 2008 IEEE. All rights reserved. This is an unapproved IEEE Standards Draft, subject to change. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
8、 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 Abstract: This amendment defines modifications to both the 802.11 physical layers (PHY) and the 802.11 Medium Access Control Layer (MAC) so that modes of oper
9、ation can be enabled that are capable of much higher throughputs, with a maximum throughput of at least 100 Mb/s, as measured at the MAC data service access point (SAP). Keywords: Wireless LAN, Medium Access Control, Physical Layer, Radio, Multiple Input Multiple Out- put, MIMO, MIMO-OFDM, High Thro
10、ughput Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 11/15/2008 20:36:43 MSTNo reproduction or networking permitted without license from IHS -,-,- IEEE P802.11n/D5.0, May
11、 2008 Copyright 2008 IEEE. All rights reserved.iii This is an unapproved IEEE Standards Draft, subject to change. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65
12、Introduction This amendment specifies enhancements to 802.11 PHY and MAC layers to provide modes of operation with useful data rates substantially higher than those previously available. Significantly higher 802.11 wireless lo- cal area network (LAN) throughput is expected to improve user experience
13、s for current applications and to enable new applications and market segments. Notice to users Errata Errata, if any, for this and all other standards can be accessed at the following URL: http:/standards.ieee.org/reading/ieee/updates/errata/index.html. Users are encouraged to check this URL for err
14、ata periodically. Interpretations Current interpretations can be accessed at the following URL: http:/standards.ieee.org/reading/ieee/interp/index.html. Patents Attention is called to the possibility that implementation of this amendment may require use of subject mat- ter covered by patent rights.
15、By publication of this standard, no position is taken with respect to the existence or validity of any patent rights in connection therewith. A patent holder or patent applicant has filed a state- ment of assurance that it will grant licenses under these rights without compensation or under reasonab
16、le rates, with reasonable terms and conditions that are demonstrably free of any unfair discrimination to appli- cants desiring to obtain such licenses. Other Essential Patent Claims may exist for which a statement of assurance has not been received. The IEEE is not responsible for identifying Essen
17、tial Patent Claims for which a license may be required, for conducting inquiries into the legal validity or scope of Patents Claims, or determining whether any licensing terms or conditions are reasonable or non-discriminatory. Users of this standard are expressly advised that determination of the v
18、alidity of any patent rights, and the risk of infringe- ment of such rights, is entirely their own responsibility. Further information may be obtained from the IEEE Standards Association. Participants At the time this draft Standard was completed, the 802.11 Working Group had the following membershi
19、p: Bruce Kraemer, Chair Jon Rosdahl and Adrian Stephens, Vice-chairs Stephen McCann, Secretary (This introduction is not part of IEEE P802.11n/D5.0, Draft Amendment to Standard for Information Technology-Telecommunications and information exchange between systems-Local and Metropolitan networks-Spec
20、ific requirements-Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Enhancements for Higher Throughput.) Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan
21、, IHS Not for Resale, 11/15/2008 20:36:43 MSTNo reproduction or networking permitted without license from IHS -,-,- IEEE P802.11n/D5.0, May 2008 ivCopyright 2008 IEEE. All rights reserved. This is an unapproved IEEE Standards Draft, subject to change. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
22、20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 EDITORIAL NOTEa three column list of voting members of 802.11 on the day the draft was sent for sponsor ballot will be inserted The following were officers of Tas
23、k Group n: Bruce Kraemer, Chair Sheung Li, Vice-Chair Garth Hillman, Secretary Adrian P. Stephens, Technical Editor Contributions to this amendment were received from the following individuals: Abbott, Bill Abraham, Santosh Adachi, Tomoko Akhmetov, Dmitry Aldana, Carlos Andrus, Dave Anholt, Micha Ao
24、ki, Tsuguhide Asai, Yusuke Awater, Geert Bagby, David Banerjee, Kaberi Bansal, Amit Basson, Gal Batra, Anuj Benko, John Benveniste, Mathilde Bjerke, Bjorn Blakenship, Yufei Borges, Daniel Chan, Douglas Chang, Jerry Chang, John Chen, Jeng-Hong Chen, Stephen Chen, Yi-Ming Chiang, Pei-ju Chin, Francois
25、 Chin, Woon Hau Chou, Emily Chu, Liwen Chugg, Keith Classon, Brian Coffey, Sean Convertino, Gabriella de Courville, Marc de Vegt, Rolf Dielacher, Franz Doi, Yoshiharu Dorsey, John Douglas, Brett Ecclesine, Peter Engwer, Darwin Epstein, Leonid Erceg, Vinko Eroz, Mustafa Fechtel, Stefan Feinberg, Paul
26、 Fischer, Matthew Frederiks, Guido Fukagawa, Takashi Fung, Patrick Gallizio, Edoardo Gardner, James Gatti, Devis Ghosh, Monisha Gosteau, Jeremy Grandhi, Sudheer Gray, Paul Gresset, Nicolas Gu, Daqing Gunduzhan, Emre Hansen, Christopher Hart, Brian Hedberg, David Hillman, Garth Ho, Jin-Meng Hocevar,
27、Dale Hoo, Louise Ikram, Muhammad Inoue, Yasuhiko Ishida, Kaz Ishidoshiro, Takashi Iyer, Lakshmi Jacobson, Eric Jauh, Yuh-Ren Jeon, Taehyun Jokela, Jari Jones, VK Kafle, Padam Kakani, Naveen Kandala, Sriniavs Kapur, Ateet Kasher, Assaf Kato, Masato Ketchum, John Kim, Joonsuk Kim, Pansop Kim, Youngsoo
28、 Kleindl, Guenter Kobayashi, Kiyotaka Kose, Cenk Kraemer, Bruce Kuehnel, Thomas Kunihiro, Takushi Kwak, Joe Kwak, Joseph Kwon, Edwin Labbe, Patrick Lauer, Joseph Lee, Dongjun Lee, Lin-Nan Lee, Sheng Lee, Sok-kyu Lei, Zhongding Levy, Joseph Leyonhjelm, Scott Li, Pen Li, Sheung Li, Yuan Liao, Kevin Li
29、m, Isaac Lin, Alfred Liu, Albert Liu, Der-Zheng Livshitz, Michael Loc, Peter Lojko, Peter Lou, Hui-Ling Matache, Adina Mazet, Laurent McFarland, William McNamara, Darren Medvedev, Irina Meylan, Arnaud Miki, Morgan Min, Seungwook Mo, Patrick Molisch, Andy Copyright The Institute of Electrical and Ele
30、ctronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 11/15/2008 20:36:43 MSTNo reproduction or networking permitted without license from IHS -,-,- IEEE P802.11n/D5.0, May 2008 Copyright 2008 IEEE. All rights reserved.v Thi
31、s is an unapproved IEEE Standards Draft, subject to change. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 Moorti, R. Tushar Moreton, Mike Morioka, Yuichi Muck,
32、Markus Mujtaba, Syed Aon Myles, Andrew Nabar, Rohit Nagai, Yukimasa Nagata, Kengo Nakao, Seigo Nanda, Sanjiv Ngo, Chiu Nimbalker, Ajit Nitsche, Gunnar Niu, Huaning Oakes, Ivan Ohtani, Yoshihiro Ojard, Eric Onizawa, Takeshi Oostveen, Job Osnato, Fabio Padam, Kafle Pai, Pratima Palanivelu, Arul Parame
33、swaran, Subra Pare, Thomas Patillon, Jean-Noel Peng, Wei-Chung Perahia, Eldad Petranovich, Jim Pillai, Krishna Madhavan Pillai, Madhavan Poloni, Angelo Poojary, Neeraj Ptasinski, Henry Purkovic, Aleksandar Qian, Luke Raissinia, Ali Ramakrishnan, Sthanunathan Ramesh, Sridhar Riva, Raffaele Rosdahl, J
34、on Rouquette-Leveil, Stephanie Rude, Mike Sadowsky, John Salhotra, Atul Scarpa, Vincenzo Schultz, Donald Schylander, Erik Seals, Michael Shao, Huai-Rong Sharma, Suman Shellhammer, Steve Sherlock, Ian Shida, Masaaki Shono, Takashi Simoens, Sebastien Siti, Massimiliano Smith, Doug Smith, Matt Soomro,
35、Amjad Stacey, Robert Stephens, Adrian Stephenson, Dave Stolpman, Victor Sun, Sumei Sun, Xiantao Surineni, Shravan Sutskover, Ilan Takagi, Eiji Takagi, Masahiro Takahashi, Seiichiro Takeda, Daisuke Tan, Teik-Kheong Tanaka, Yasuhiro ten Brink, Stephan Thiagarajan, Ganesan Tokubo, Eric Towell, Tim Trac
36、hewsky, Jason Trainin, Solomon Tung, David Valle, Stefano van Nee, Richard van Waes, Nico van Zelst, Allert Vila Casado, Andres Vlantis, George Wakeley, Timothy Walker, Jesse Wallace, Brad Wallace, Mark Walton, Rod Wang, Qi Wang, Xiaowen Waters, Deric Webster, Mark Wentink, Menzo Wesel, Richard Wilh
37、oyte, Mike Wong, Timothy Woodyatt, James Wu, Yan Xhafa, Ariton Xia, Bo Yamaura, Tomoya Yang, Eric Yeh, Wen-Chang YI, S Young, Christopher Yu, Heejung Zaks, Artur Zeira, Eldad Zhang, Hongyuan Zhang, Jin Zhang, Ning Zhou, Quan Zweig, Johnny Zyren, Jim The following members of the individual balloting
38、committee voted on this Standard. Balloters may have voted for approval, disapproval, or abstention. EDITORIAL NOTEa three-column list of responding sponsor ballot members will be inserted by IEEE staff Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under licen
39、se with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 11/15/2008 20:36:43 MSTNo reproduction or networking permitted without license from IHS -,-,- IEEE P802.11n/D5.0, May 2008 viCopyright 2008 IEEE. All rights reserved. This is an unapproved IEEE Standards Draft, subject to
40、 change. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 Table of Contents 3.Definitions . 2 4.Abbreviations and acronyms . 7 5.General description 9 5.2.9High Th
41、roughput (HT) STA 9 6.MAC service definition . 10 6.1Overview of MAC services . 10 6.1.5MAC data service architecture 10 7.Frame formats 12 7.1MAC frame formats. 12 7.1.1Conventions. 12 7.1.2General frame format. 12 7.1.3Frame fields . 13 7.1.3.1Frame control field. 13 7.1.3.1.2Type and Subtype fiel
42、ds 13 7.1.3.1.6Power Management field. 14 7.1.3.1.7More Data field 14 7.1.3.1.9Order field 14 7.1.3.2Duration/ID field 14 7.1.3.3Address fields 14 7.1.3.3.4DA field . 14 7.1.3.3.5SA field 15 7.1.3.4Sequence Control field. 15 7.1.3.4.1Sequence Number field 15 7.1.3.4.2Fragment Number field 15 7.1.3.5
43、QoS Control field. 15 7.1.3.5.1TID subfield. 16 7.1.3.5.3Ack Policy subfield 17 7.1.3.5.5Queue Size subfield. 17 7.1.3.5.6TXOP Duration Requested subfield 18 7.1.3.5.7AP PS Buffer State subfield. 18 7.1.3.5.8A-MSDU Present subfield. 18 7.1.3.5aHT Control field. 18 7.1.3.6Frame Body field. 22 7.1.4Du
44、ration/ID field (QoS STA)in data and management frames . 23 7.2Format of individual frame types. 26 7.2.1Control frames . 26 7.2.1.1RTS frame format 26 7.2.1.2CTS frame format 26 7.2.1.3ACK frame format. 27 7.2.1.7Block Ack Request (BlockAckReq) frame format 28 7.2.1.7.1Overview of the BlockAckReq f
45、rame format 28 7.2.1.7.2Basic BlockAckReq variant. 30 7.2.1.7.3Compressed BlockAckReq variant 30 7.2.1.7.4Multi-TID BlockAckReq variant. 30 Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS
46、Not for Resale, 11/15/2008 20:36:43 MSTNo reproduction or networking permitted without license from IHS -,-,- IEEE P802.11n/D5.0, May 2008 Copyright 2008 IEEE. All rights reserved.vii This is an unapproved IEEE Standards Draft, subject to change. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
47、 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 7.2.1.8Block Ack (BlockAck) frame format 31 7.2.1.8.1Overview of the BlockAck frame format 31 7.2.1.8.2Basic BlockAck variant. 33 7.2.1.8.3Compressed BlockAck variant
48、34 7.2.1.8.4Multi-TID BlockAck variant. 34 7.2.1.9Control Wrapper frame 35 7.2.2Data frames 36 7.2.2.1Data frame format 36 7.2.2.2Aggregate MSDU format (A-MSDU). 38 7.2.3Management frames. 39 7.2.3.1Beacon frame format . 39 7.2.3.4Association Request frame format. 40 7.2.3.5Association Response fram
49、e format 41 7.2.3.6Reassociation Request frame format . 41 7.2.3.7Reassociation Response frame format. 42 7.2.3.8Probe Request frame format 42 7.2.3.9Probe Response frame format 43 7.2.3.13Action No Ack frame format. 43 7.3Management frame body components. 44 7.3.1Fields that are not information elements 44