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

Technologies de l'information — Télécommunications et échange d'information entre systèmes — Réseaux locaux et métropolitains — Exigences spécifiques — Partie 11: Spécifications du contrôle d'accès du milieu sans fil (MAC) et de la couche physique (PHY) — Amendement 4

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INTERNATIONAL ISO/IEC/
STANDARD IEEE
8802-11
First edition
2012-11-01
AMENDMENT 4
2015-09-01
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
Technologies de l'information — Télécommunications et échange
d'information entre systèmes — Réseaux locaux et métropolitains —
Exigences spécifiques —
Partie 11: Spécifications du contrôle d'accès du milieu sans fil (MAC) et
de la couche physique (PHY)
AMENDEMENT 4
Reference number
ISO/IEC/IEEE 8802-11:2012/Amd.4:2015(E)
©
IEEE 2013

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ISO/IEC/IEEE 8802-11:2012/Amd.4:2015(E)
©  IEEE 2013
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from ISO, IEC or IEEE at the respective
address below.
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Web www.iso.org
Published in Switzerland
ii © IEEE 2013 – All rights reserved

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ISO/IEC/IEEE 8802-11:2012/Amd.4:2015(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are members of
ISO or IEC participate in the development of International Standards through technical committees established
by the respective organization to deal with particular fields of technical activity. ISO and IEC technical
committees collaborate in fields of mutual interest. Other international organizations, governmental and non-
governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO
and IEC have established a joint technical committee, ISO/IEC JTC 1.
IEEE Standards documents are developed within the IEEE Societies and the Standards Coordinating
Committees of the IEEE Standards Association (IEEE-SA) Standards Board. The IEEE develops its standards
through a consensus development process, approved by the American National Standards Institute, which
brings together volunteers representing varied viewpoints and interests to achieve the final product. Volunteers
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process and establishes rules to promote fairness in the consensus development process, the IEEE does not
independently evaluate, test, or verify the accuracy of any of the information contained in its standards.
The main task of ISO/IEC JTC 1 is to prepare International Standards. Draft International Standards adopted
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Standard requires approval by at least 75 % of the national bodies casting a vote.
Attention is called to the possibility that implementation of this standard may require the use of subject matter
covered by patent rights. By publication of this standard, no position is taken with respect to the existence or
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advised that determination of the validity of any patent rights, and the risk of infringement of such rights, is
entirely their own responsibility. Further information may be obtained from ISO or the IEEE Standards
Association.
Amendment 4 to ISO/IEC/IEEE 8802-11 was prepared by the LAN/MAN of the IEEE Computer Society (as
IEEE 802.11-2013). It was adopted by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 6, Telecommunications and information exchange between systems, in parallel with its
approval by the ISO/IEC national bodies, under the “fast-track procedure” defined in the Partner Standards
Development Organization cooperation agreement between ISO and IEEE. IEEE is responsible for the
maintenance of this document with participation and input from ISO/IEC national bodies.
© IEEE 2013 – All rights reserved iii

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ISO/IEC/IEEE 8802-11:2012/Amd.4:2015(E)
(blank page)
iv © IEEE 2013 – All rights reserved

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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
IEEE Computer Society
Sponsored by the
LAN/MAN Standards Committee
IEEE
™-
IEEE Std 802.11ac 2013
3 Park Avenue
(Amendment to
New York, NY 10016-5997
IEEE Std 802.11™-2012,
USA
as amended by IEEE Std 802.11ae™-2012,
IEEE Std 802.11aa™-2012,
and IEEE Std 802.11ad™-2012)

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ISO/IEC/IEEE 8802-11:2012/Amd.4:2015(E)
IEEE Std 802.11ac™-2013
(Amendment to
IEEE Std 802.11™-2012,
as amended by IEEE Std 802.11ae™-2012,
IEEE Std 802.11aa™-2012,
and IEEE Std 802.11ad™-2012)
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
Sponsor
LAN/MAN Standards Committee
of the
IEEE Computer Society
Approved 11 December 2013
IEEE-SA Standards Board

---------------------- Page: 6 ----------------------
ISO/IEC/IEEE 8802-11:2012/Amd.4:2015(E)
Abstract: 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.
Keywords: 256-QAM, beamforming, IEEE 802.11ac™, multi-user MIMO, noncontiguous
frequency segments, very high throughput, wider bandwidth
The Institute of Electrical and Electronics Engineers, Inc.
3 Park Avenue, New York, NY 10016-5997, USA
Copyright © 2013 by The Institute of Electrical and Electronics Engineers, Inc.
All rights reserved. Published 18 December 2013. Printed in the United States of America.
IEEE and 802 are registered trademarks in the U.S. Patent & Trademark Office, owned by The Institute of Electrical and
Electronics Engineers, Incorporated.
PDF: ISBN 978-0-7381-8860-7 STD98502
Print: ISBN 978-0-7381-8861-4 STDPD98502
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written permission of the publisher.

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ISO/IEC/IEEE 8802-11:2012/Amd.4:2015(E)
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ISO/IEC/IEEE 8802-11:2012/Amd.4:2015(E)
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ISO/IEC/IEEE 8802-11:2012/Amd.4:2015(E)
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ISO/IEC/IEEE 8802-11:2012/Amd.4:2015(E)
Participants
At the time this standard was completed, the IEEE 802.11 Working Group had the following membership:
Bruce P. Kraemer, Chair
Jon W. Rosdahl and Adrian P. Stephens, Vice-chairs
Stephen McCann, Secretary
The following were officers of Task Group ac:
Osama S. Aboul-Magd, Chair
Joonsuk Kim and Menzo M. Wentink, Vice-chairs
Robert Stacey, Technical Editor
David Xun Yang, Secretary
Subir Das Yasuhiko Inoue
Santosh P. Abraham
Rolf J. de Vegt Akio Iso
Roberto Aiello
Hossein Dehghan Mitsuru Iwaoka
Carlos H. Aldana
Yohannes Demessie ByungJang Jang Jeong
Thomas Alexander
Theodorus Denteneer Jorjeta G. Jetcheva
Peiman Amini
Klaus Doppler ZhongYi Jin
Sirikiat Lek Ariyavisitakul
Offie Drennan Vince Jones
Lee R. Armstrong
Roger P. Durand Avinash Joshi
Yusuke Asai
Peter Ecclesine Padam Kafle
Alex Ashley
Richard Edgar Carl W. Kain
Torrey Atcitty
Naveen K. Kakani
Kwok Shum Au Marc Emmelmann
Byeongwoo Kang
Vijay Auluck Leonid Epstein
Hyunduk Kang
Stefan Aust Vinko Erceg
Assaf Y. Kasher
Geert A. Awater Ping Fang
Shuzo Kato
David Bagby Fei Qin
Richard H. Kennedy
Michael Bahr Stanislav Filin
John Kenney
Gabor Bajko Matthew J. Fischer
Stuart J. Kerry
Raja Banerjea George Flammer
Prithpal Khakuria
Phillip Barber Noriyasu Fukatsu
Thet Khine
John R. Barr Patrick Fung
Bonghoe Kim
Tuncer Baykas Chittabrata Ghosh
Byoung-Hoon Kim
Alan Berkema James P. K. Gilb
Eun Sun Kim
Anirudh Bhatt Reinhard Gloger
Jinkyeong Kim
Bijoy Bhukania Daning Gong
Suhwook Kim
Ted Booth Michelle Gong
Youhan Kim
Philippe Boucachard David Goodall
Youngsoo Kim
Andre Bourdoux Elad Gottlib
Yunjoo Kim
George Bumiller Sudheer A. Grandhi
Shoichi Kitazawa
George Calcev Michael Grigat
Tero Kivinen
Chris Calvert David Halasz
Jarkko Kneckt
Mark Hamilton
Daniel Camps Mur
Gwangzeen Ko
Christopher J. Hansen
Laurent Cariou
Mark M. Kobayashi
Hiroshi Harada
William Carney
Fumihide Kojima
Dan N. Harkins
Philippe Chambelin
Tom Kolze
Kim Chang Brian D. Hart
Timo Koskela
Clint F. Chaplin Ahmadreza Hedayat
Thomas M. Kurihara
Bin Chen Robert F. Heile
Joseph Kwak
Minho Cheong Guido R. Hiertz
Paul Lambert
Inhwan Choi Garth D. Hillman
Zhou Lan
In-Kyeong Choi Ken Hiraga
Leonardo Lanante
Jee-Yon Choi David Howard
James Lansford
Liwen Chu Jing-Rong Hsieh
Daewon Lee
John Coffey Ju-Lan Hsu
Donghun Lee
Kenneth Coop David Hunter
Jae Seung Seung Lee
Carlos Cordeiro Sung Hyun Hwang
vi Copyright © 2013 IEEE. All rights reserved.

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ISO/IEC/IEEE 8802-11:2012/Amd.4:2015(E)
Jihyun Lee James E. Petranovich James D. Tomcik
Yuro Lee Albert Petrick
Ichihiko Toyoda
Zhongding Lei John Petro
Solomon B. Trainin
Wai Kong Kong Leung Krishna Madhavan Pillai
Ha Nguyen Tran
Honggang Li Riku Pirhonen
Masahiro Umehira
Juho Pirskanen
Huan-Bang Li
Richard D. J. Van Nee
Lingjie Li Vishakan Ponnampalam
Allert Van Zelst
Yunzhou Li Ron Porat
Prabodh Varshney
Erik Lindskog Henry S. Ptasinski
Jeremy Link Satish Putta
Ganesh Venkatesan
Lu Liru Chang-Woo Chang Pyo
Sameer Vermani
Emily H. Qi
Jianhan Liu
Dalton T. Victor
Huyu Qu
Siyang Liu
Gabriel Villardi
Yong Liu Jim E. Raab
Bhupender Virk
Peter Loc Harish Ramamurthy
George A. Vlantis
Yi Luo Jayaram Ramasastry
Sanjay Wadhwa
Zhendong Luo Ivan Reede
Kaiying Lv Edward Reuss Chao Chun Wang
Maximilian Riegel
Bradley Lynch Haiguang Wang
Michael Lynch Mark Rison
James June Wang
Jouni K. Malinen Dongwook Roh
Junyi Wang
Hiroshi Mano Alexander Safonov
Lei Wang
Avi Masour Kazuyuki Sakoda
Qi Wang
Simone Merlin Ruben Salazar Cardozo
Lisa Ward
Hemanth Sampath
Murat Mese
Fujio Watanabe
James Miller Sigurd Schelstraete
Lei Wen
Fanny Mlinarsky Timothy Schmidl
Apurva Mody Cristina Seibert
Nicholas West
Emmanuel Monnerie Yongho Seok
Ian Wong
Michael Montemurro Kunal Shah
James Worsham
Rajendra T. Moorti Huairong Shao
Harry R. Worstell
Hitoshi Morioka Nir Shapira
Tianyu Wu
Andrew Myles Steve Shearer
Zhanji Wu
Yukimasa Nagai Stephen J. Shellhammer
Akira Yamada
Hiroki Nakano Ian Sherlock
Sai Shankar Nandagopalan Wei Shi Huanchun Ye
Pradeep Nemavat Nobuhiko Shibagaki
James Yee
Chiu Ngo Shusaku Shimada
Jung Yee
Paul Nikolich Thomas M. Siep
Peter Yee
Knut Odman Michael Sim
Su Khiong Yong
Hiroyo Ogawa Dwight Smith
Christopher Young
Jong-Ee Oh Graham Kenneth Smith
Heejung Yu
Minseok Oh Ill Soo Sohn
Artur Zaks
David Olson Chunyi Song
Dezhi Zhang
Satoshi Oyama Dorothy Stanley
Santosh G. Pandey Chin-Sean Sum
Hongyuan Zhang
Anna Pantelidou Bo Sun
Junjian Zhang
Thomas Pare Chen Sun
Ning Zhang
Jaewoo Park Mohammad Hossein Taghavi
Mu Zhao
Jonghyun Park Kazuaki Takahashi
Qiang Zhao
Minyoung Park
Mineo Takai
Jun Zheng
Seung-Hoon Park Joseph Teo
Chunhui Zhu
Sandhya Patil Jerry Thrasher
Eldad Perahia Jens Tingleff Lawrence Zuckerman
Copyright © 2013 IEEE. All rights reserved. vii

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ISO/IEC/IEEE 8802-11:2012/Amd.4:2015(E)
The following members of the individual balloting committee voted on this standard. Balloters may have
voted for approval, disapproval, or abstention.
Osama S. Aboul-Magd Yasuhiko Inoue
Paul Nikolich
Tomoko Adachi Sergiu Iordanescu
Satoshi Obara
Akio Iso
Thomas Alexander Robert O’Hara
Nobumitsu Amachi Atsushi Ito Satoshi Oyama
Arthur Astrin Mitsuru Iwaoka Stephen Palm
Kwok Shum Au Raj Jain Sandhya Patil
Phillip Barber Junghoon Jee Eldad Perahia
Tuncer Baykas Vincent Jones James Petranovich
Mathild Benveniste Bobby Jose Brian Phelps
Joe Natharoj Juisai Juho Pirskanen
Nancy Bravin
Clinton Powell
William Byrd Shinkyo Kaku
Venkatesha Prasad
George Calcev Hyunduk Kang
Michael Probasco
William Carney Hyunjeong Kang
Ivan Reede
Juan Carreon Piotr Karocki
Maximilian Riegel
Douglas Chan Assaf Kasher
Robert Robinson
Xin Chang Ruediger Kays
Jon W. Rosdahl
John Kenney
Hong Cheng
Naotaka Sato
Minho Cheong Stuart Kerry
Peter Saunderson
Paul Chiuchiolo Yongbum Kim
Bartien Sayogo
Hangyu Cho Youhan Kim
Sigurd Schelstraete
Keith Chow Gwangzeen Ko
Yongho Seok
Charles Cook Bruce P. Kraemer
Ian Sherlock
Thomas Kurihara
Carlos Cordeiro
Shusaku Shimada
Neiyer Correal Joseph Kwak
Ju-Hyung Son
Alessandro De Filippo Geoff Ladwig
Myung Sun Song
Michael de la Garrigue Jeremy Landt
Kapil Sood
Michael Denson Nils Langhammer
Manikantan Srinivasan
Hendricus De Ruijter James Lansford
Robert Stacey
Wael Diab Jae Seung Lee
Dorothy Stanley
Wookbong Lee
Patrick Diamond
Thomas Starai
Roger Durand Hyeong Ho Lee
Adrian P. Stephens
Sourav Dutta John Lemon
Rene Struik
Peter Ecclesine James Lepp
Walter Struppler
Richard Edgar Joseph Levy
Chin-Sean Sum
Marc Emmelmann Yunbo Li
Bo Sun
David Evans Arthur H. Light
Mohammad Taghavi
Matthew Fischer Lu Liru
Rakesh Taori
George Flammer Yi Luo
Thomas Tetzlaff
P. Flynn Chris Lyttle
Jens Tingleff
Avraham Freedman Elvis Maculuba
Keat Beng Toh
Devon Gayle Jouni Malinen
Fei Tong
Monisha Ghosh James Marin
Solomon Trainin
David Goodall Roger Marks
Ha Nguyen Tran
Sudheer Grandhi Jeffery Masters
Kazuyoshi Tsukada
Randall Groves W. Kyle Maus
Mark-Rene Uchida
Michael Gundlach Stephen McCann
Richard Van Nee
Chris Guy Steven Methley
Allert Van Zelst
Gloria Gwynne David Mitton
Dmitri Varsanofiev
Rainer Hach Michael Montemurro
Prabodh Varshney
David Halasz
Jose Morales
John Vergis
Hiroshi Hamano Joseph Moran
George Vlantis
Mark Hamilton Kenichi Mori
Haiming Wang
Christopher Hansen Ronald Murias
James June Wang
Jerome Henry Rick Murphy
Lei Wang
Marco Hernandez Peter Murray
Xiang Wang
Dien Hoang Andrew Myles
Stephen Webb
Werner Hoelzl Juichi Nakada
Hung-Yu Wei
David Howard Michael Newman
Menzo M. Wentink
David Hunter Charles Ngethe
Tianyu Wu
Noriyuki Ikeuchi Nick S.A. Nikjoo
David Xun Yang
viii Copyright © 2013 IEEE. All rights reserved.

---------------------- Page: 13 ----------------------
ISO/IEC/IEEE 8802-11:2012/Amd.4:2015(E)
James Yee Hongyuan Zhang Mingtuo Zhou
Oren Yuen Jiayin Zhang Chunhui Zhu
Daidi Zhong
When the IEEE-SA Standards Board approved this standard on 11 December 2013, it had the following
membership:
John Kulick, Chair
David J. Law, Vice Chair
Richard H. Hulett, Past Chair
Konstantinos Karachalios, Secretary
Masayuki Ariyoshi Mark Halpin Ron Petersen
Peter Balma Gary Hoffman Gary Robinson
Farooq Bari Paul Houzé Jon Walter Rosdahl
Ted Burse Jim Hughes Adrian Stephens
Wael William Diab Michael Janezic Peter Sutherland
Stephen Dukes Joseph L. Koepfinger* Yatin Trivedi
Jean-Philippe Faure Oleg Logvinov Phil Winston
Alexander Gelman Yu Yuan
*Member Emeritus
Also included are the following nonvoting IEEE-SA Standards Board liaisons:
Richard DeBlasio, DOE Representative
Michael Janezic, NIST Representative
Michelle Turner
IEEE Standards Program Manager, Document Development
Kathryn Bennett
IEEE Standards Program Manager, Technical Program Development
Copyright © 2013 IEEE. All rights reserved. ix

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ISO/IEC/IEEE 8802-11:2012/Amd.4:2015(E)
Introduction
This introduction is not part of IEEE Std 802.11ac™-2013, 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.
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.
x Copyright © 2013 IEEE. All rights reserved.

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ISO/IEC/IEEE 8802-11:2012/Amd.4:2015(E)
Contents
3. Definitions, acronyms and abbreviations . 2
3.1 Definitions . 2
3.2 Definitions specific to IEEE 802.11 . 2
3.3 Abbreviations and acronyms . 8
4. General description. 10
4.3 Components of the IEEE 802.11 architecture . 10
4.3.4 Distribution system (DS) concepts. 10
4.3.4.3 Robust security network association (RSNA) . 10
4.3.10a Very high throughput (VHT) STA . 10
4.5 Overview of the services. 11
4.5.4 Access control and data confidentiality services. 11
4.5.4.1 General. 11
4.5.4.7 Replay detection . 11
4.5.4.9 R
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