(cid:17)(cid:28)(cid:22)(cid:30)(cid:21)(cid:25)(cid:24)(cid:27)(cid:1)(cid:18)(cid:27)(cid:31)(cid:23)(cid:26)(cid:28)(cid:29)(cid:23)(cid:1)(cid:20)(cid:17)(cid:13)(cid:1)(cid:7)(cid:19)(cid:12)(cid:9)(cid:5)(cid:17)(cid:10)(cid:7)(cid:2)(cid:8)(cid:8)(cid:5)(cid:19)(cid:2)(cid:7)(cid:12)(cid:18)(cid:6)(cid:2)(cid:12)(cid:11)(cid:15)(cid:14)(cid:2)(cid:5)(cid:19)(cid:9)(cid:8)(cid:3)(cid:8)(cid:4)(cid:14)(cid:17)(cid:9)(cid:16)(cid:12)
`
`DECLARATION OF DAVID RINGLE
`
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`I am the Director of IEEE-SA Governance for the Institute of Electrical and
`Electronics Engineers, Incorporated (“IEEE”).
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`2.
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`IEEE is a neutral third party in this dispute.
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`8. The document below, along with its abstract, has been attached as Exhibit A to this
`declaration:
`
`A. 802.11a-1999 - IEEE Standard for Telecommunications and Information
`Exchange Between Systems - LAN/MAN Specific Requirements - Part 11:
`Wireless Medium Access Control (MAC) and physical layer (PHY)
`specifications: High Speed Physical Layer in the 5 GHz band, date of
`publication December 30, 1999.
`
`9.
`
`I obtained a copy of Exhibit A through IEEE Xplore, where it is maintained in the
`ordinary course of IEEE’s business. Exhibit A is a true and correct copy of the
`Exhibit as it existed on or about June 26, 2023.
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`(cid:17)(cid:28)(cid:22)(cid:30)(cid:21)(cid:25)(cid:24)(cid:27)(cid:1)(cid:18)(cid:27)(cid:31)(cid:23)(cid:26)(cid:28)(cid:29)(cid:23)(cid:1)(cid:20)(cid:17)(cid:13)(cid:1)(cid:7)(cid:19)(cid:12)(cid:9)(cid:5)(cid:17)(cid:10)(cid:7)(cid:2)(cid:8)(cid:8)(cid:5)(cid:19)(cid:2)(cid:7)(cid:12)(cid:18)(cid:6)(cid:2)(cid:12)(cid:11)(cid:15)(cid:14)(cid:2)(cid:5)(cid:19)(cid:9)(cid:8)(cid:3)(cid:8)(cid:4)(cid:14)(cid:17)(cid:9)(cid:16)(cid:12)
`
`10. Exhibit A states the date of its publication.
`
`11. 802.11a-1999 - IEEE Standard for Telecommunications and Information Exchange
`Between Systems - LAN/MAN Specific Requirements - Part 11: Wireless Medium
`Access Control (MAC) and physical layer (PHY) specifications: High Speed Physical
`Layer in the 5 GHz band, date of publication December 30, 1999. This document is
`currently available for public download from the IEEE digital library, IEEE Xplore.
`
`12. I hereby declare that all statements made herein of my own knowledge are true and
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`Executed on:
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`(cid:5)(cid:1)(cid:3)(cid:5)(cid:1)(cid:3)(cid:2)(cid:3)(cid:4)
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`(cid:17)(cid:28)(cid:22)(cid:30)(cid:21)(cid:25)(cid:24)(cid:27)(cid:1)(cid:18)(cid:27)(cid:31)(cid:23)(cid:26)(cid:28)(cid:29)(cid:23)(cid:1)(cid:20)(cid:17)(cid:13)(cid:1)(cid:7)(cid:19)(cid:12)(cid:9)(cid:5)(cid:17)(cid:10)(cid:7)(cid:2)(cid:8)(cid:8)(cid:5)(cid:19)(cid:2)(cid:7)(cid:12)(cid:18)(cid:6)(cid:2)(cid:12)(cid:11)(cid:15)(cid:14)(cid:2)(cid:5)(cid:19)(cid:9)(cid:8)(cid:3)(cid:8)(cid:4)(cid:14)(cid:17)(cid:9)(cid:16)(cid:12)
`DocuSign Envelope ID: 4F962D74-552F-49E3-98BA-2F65051AD6C9
`
`EXHIBIT A
`EXHIBIT A
`
`

`

`IEEE Std 802.11a-1999
`(Supplement to
`IEEE Std 802.11-1999)
`
`Supplement to IEEE Standard for
` Information technology—
`Telecommunications and information exchange
` between systems—
`Local and metropolitan area networks—
`Speci(cid:192)c requirements—
`
`Part 11: Wireless LAN Medium Access Control
`(MAC) and Physical Layer (PHY) speci(cid:192)cations:
`
`High-speed Physical Layer in the 5 GHZ Band
`
`Sponsor
`LAN/MAN Standards Committee
`of the
`IEEE Computer Society
`
`Approved 16 September 1999
`IEEE-SA Standards Board
`
`Abstract: Changes and additions to IEEE Std. 802.11-1999 are provided to support the new high-
`rate physical layer (PHY) for operation in the 5 GHz band.
`Keywords: 5 GHz, high speed, local area network (LAN), orthogonal frequency division multiplex-
`ing (OFDM), radio frequency, unlicensed national information infrastructure (U-NII), wireless
`
`The Institute of Electrical and Electronics Engineers, Inc.
`3 Park Avenue, New York, NY 10016-5997, USA
`
`Copyright © 1999 by the Institute of Electrical and Electronics Engineers, Inc.
`All rights reserved. Published 30 December 1999. Printed in the United States of America.
`
`Print:
`PDF:
`
`ISBN 0-7381-1809-5 SH94787
`ISBN 0-7381-1810-9 SS94787
`
`No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior
`written permission of the publisher.
`
`Authorized licensed use limited to: IEEE Staff. Downloaded on June 26,2023 at 17:16:57 UTC from IEEE Xplore. Restrictions apply.
`
`

`

`
`
`
`
`IEEE Standards
` documents are developed within the IEEE Societies and the Standards Coordinating Com-
`mittees of the IEEE Standards Association (IEEE-SA) Standards Board. Members of the committees serve
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`received from users of the standard. Every IEEE Standard is subjected to review at least every (cid:192)ve years for
`revision or reaf(cid:192)rmation. When a document is more than (cid:192)ve years old and has not been reaf(cid:192)rmed, it is rea-
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`Introduction
`
`(This introduction is not part of IEEE Std 802.11a-1999, Supplement to IEEE Standard for Information technology—
`Telecommunications and information exchange between systems—Local and metropolitan area networks—Speci(cid:192)c
`Requirements—Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) speci(cid:192)cations: High-
`speed Physical Layer in the 5 GHz Band.)
`
`This standard is part of a family of standards for local and metropolitan area networks. The relationship
`between the standard and other members of the family is shown below. (The numbers in the (cid:192)gure refer to
`IEEE standard numbers.)
`
`802.2 LOGICAL LINK CONTROL
`
`802.1 BRIDGING
`
`DATA
`LINK
`LAYER
`
`802.3
`MEDIUM
`ACCESS
`
`802.4
`MEDIUM
`ACCESS
`
`802.5
`MEDIUM
`ACCESS
`
`802.6
`MEDIUM
`ACCESS
`
`802.9
`MEDIUM
`ACCESS
`
`802.11
`MEDIUM
`ACCESS
`
`802.12
`MEDIUM
`ACCESS
`
`802.3
`PHYSICAL
`
`802.4
`PHYSICAL
`
`802.5
`PHYSICAL
`
`802.6
`PHYSICAL
`
`802.9
`PHYSICAL
`
`802.11
`PHYSICAL
`
`802.12
`PHYSICAL
`
`PHYSICAL
`LAYER
`
`802.1 MANAGEMENT
`
`802 OVERVIEW & ARCHITECTURE*
`
`802.10 SECURITY
`
`* Formerly IEEE Std 802.1A.
`
`This family of standards deals with the Physical and Data Link layers as de(cid:192)ned by the International Organiza-
`tion for Standardization (ISO) Open Systems Interconnection (OSI) Basic Reference Model (ISO/IEC
`7498-1:1994). The access standards de(cid:192)ne seven types of medium access technologies and associated physi-
`cal media, each appropriate for particular applications or system objectives. Other types are under
`investigation.
`
`The standards de(cid:192)ning the access technologies are as follows:
`
`•
`
`IEEE Std 802
`
`Overview and Architecture. This standard provides an overview to the family
`
`
`of IEEE 802 Standards.
`
`• ANSI/IEEE Std 802.1B
`and 802.1k
`[ISO/IEC 15802-2]
`
`LAN/MAN Management. De(cid:192)nes an OSI management-compatible architec-
`
`ture, and services and protocol elements for use in a LAN/MAN environment
`for performing remote management.
`
`• ANSI/IEEE Std 802.1D
`[ISO/IEC 15802-3]
`
`Media Access Control (MAC) Bridges. Speci(cid:192)es an architecture and protocol
`
`
`
`for the interconnection of IEEE 802 LANs below the MAC service boundary.
`
`• ANSI/IEEE Std 802.1E
`[ISO/IEC 15802-4]
`
`System Load Protocol. Speci(cid:192)es a set of services and protocol for those
`
`aspects of management concerned with the loading of systems on IEEE 802
`LANs.
`
`•
`
`IEEE Std 802.1F
`
`Common De(cid:192)nitions and Procedures for IEEE 802 Management Information
`
`• ANSI/IEEE Std 802.1G
`[ISO/IEC 15802-5]
`
`Remote Media Access Control Bridging . Speci(cid:192)es extensions for the intercon-
`
`
`
`nection, using non-LAN communication technologies, of geographically sepa-
`rated IEEE 802 LANs below the level of the logical link control protocol.
`
`Copyright © 1999 IEEE. All rights reserved.
`Authorized licensed use limited to: IEEE Staff. Downloaded on June 26,2023 at 17:16:57 UTC from IEEE Xplore. Restrictions apply.
`
`iii
`
`

`

`• ANSI/IEEE Std 802.2
`[ISO/IEC 8802-2]
`
`• ANSI/IEEE Std 802.3
`[ISO/IEC 8802-3]
`
`• ANSI/IEEE Std 802.4
`[ISO/IEC 8802-4]
`
`• ANSI/IEEE Std 802.5
`[ISO/IEC 8802-5]
`
`Logical Link Control
`
`CSMA/CD Access Method and Physical Layer Speci(cid:192)cations
`
`Token Passing Bus Access Method and Physical Layer Speci(cid:192)cations
`
`Token Ring Access Method and Physical Layer Speci(cid:192)cations
`
`• ANSI/IEEE Std 802.6
`[ISO/IEC 8802-6]
`
`Distributed Queue Dual Bus Access Method and Physical Layer Speci(cid:192)ca-
`tions
`
`• ANSI/IEEE Std 802.9
`[ISO/IEC 8802-9]
`
`Integrated Services (IS) LAN Interface at the Medium Access Control and
`Physical Layers
`
`• ANSI/IEEE Std 802.10
`
`Interoperable LAN/MAN Security
`
`•
`
`IEEE Std 802.11
`[ISO/IEC DIS 8802-11]
`
`Wireless LAN Medium Access Control and Physical Layer Speci(cid:192)cations
`
`• ANSI/IEEE Std 802.12
`[ISO/IEC DIS 8802-12]
`
`Demand Priority Access Method, Physical Layer and Repeater Speci(cid:192)ca-
`tions
`
`In addition to the family of standards, the following is a recommended practice for a common Physical
`Layer technology:
`
`•
`
`IEEE Std 802.7
`
`IEEE Recommended Practice for Broadband Local Area Networks
`
`The following additional working groups have authorized standards projects under development:
`
`• IEEE 802.14
`
`Standard Protocol for Cable-TV Based Broadband Communication Network
`
`•
`
`•
`
`IEEE 802.15
`
`Wireless Personal Area Networks Access Method and Physical Layer
` Speci(cid:192)cations
`
`IEEE 802.16
`
`Broadband Wireless Access Method and Physical Layer Speci(cid:192)cations
`
`iv
`
`Copyright © 1999 IEEE. All rights reserved.
`Authorized licensed use limited to: IEEE Staff. Downloaded on June 26,2023 at 17:16:57 UTC from IEEE Xplore. Restrictions apply.
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`Editor’s Notes
`
`Clause 4, subclause 9.1, and Clause 17 in this supplement will be inserted into the base standard as an addi-
`tional PHY speci(cid:192)cation for the 5 GHz unlicensed national information infrastructure (U-NII) band.
`
`There are three annexes included in this supplement. Following are instructions to merge the information in
`these annexes into the base document.
`
`Annex A: This annex shows a change to the table in A.4.3 of the base standard (IUT con(cid:192)guration) and the
`
`addition of a new subclause. Item *CF6 should be added to the table in A.4.3 of the base standard. The entire
`subclause A.4.8 (Orthogonal frequency division multiplex PHY functions) should be added to the end of
`Annex A in the base standard (i.e., after A.4.7).
`
`Annex D:
`This annex contains additions to be made to Annex D (ASN.1 encoding of the MAC and PHY
`MIB) of the base standard. There are (cid:192)ve sections that provide instructions to merge the information con-
`tained herein into the appropriate locations in Annex D of the base standard.
`
`Annex G:
`This annex is new to the base standard. The purpose of Annex G is to provide an example of
`encoding a frame for the OFDM PHY, described in Clause 17, including all intermediate stages.
`
`Copyright © 1999 IEEE. All rights reserved.
`Authorized licensed use limited to: IEEE Staff. Downloaded on June 26,2023 at 17:16:57 UTC from IEEE Xplore. Restrictions apply.
`
`v
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`Participants
`
`At the time this standard was balloted, the 802.11 working group had the following membership:
`
`Chair
`
`Vic Hayes,
`
`
`
`Stuart J. Kerry, Vice Chair
`Al Petrick
`,
`Co-Vice Chair
`George Fishel
`,
`Secretary
`
`Robert O'Hara
`,
`Chair and editor, 802.11-rev
`Allen Heberling
`,
`State-diagram editor
`Michael A. Fischer
`,
`State-diagram editor
`Dean M. Kawaguchi
`,
`Chair PHY group
`David Bagby
`,
`Chair MAC group
`
`Naftali Chayat
`,
`Chair Task Group a
`Hitoshi Takanashi
`,
`Editor 802.11a
`
`John Fakatselis
`
`,
`Chair Task Group b
`
`Carl F. Andren,
`Editor 802.11b
`
`Jeffrey Abramowitz
`Reza Ahy
`Keith B. Amundsen
`James R. Baker
`Kevin M. Barry
`Phil Belanger
`John Biddick
`Simon Black
`Timothy J. Blaney
`Jan Boer
`Ronald Brockmann
`Wesley Brodsky
`John H. Cafarella
`Wen-Chiang Chen
`Ken Clements
`Wim Diepstraten
`Peter Ecclesine
`Richard Eckard
`Darwin Engwer
`Greg Ennis
`Jeffrey J. Fischer
`John Fisher
`Ian Gifford
`Motohiro Gochi
`Tim Godfrey
`Steven D. Gray
`Jan Haagh
`Karl Hannestad
`Kei Hara
`
`Chris D. Heegard
`Robert Heile
`Juha T. Heiskala
`Maarten Hoeben
`Masayuki Ikeda
`Donald C. Johnson
`Tal Kaitz
`Ad Kamerman
`Mika Kasslin
`Patrick Kinney
`Steven Knudsen
`Bruce P. Kraemer
`David S. Landeta
`James S. Li
`Stanley Ling
`Michael D. McInnis
`Gene Miller
`Akira Miura
`Henri Moelard
`Masaharu Mori
`Masahiro Morikura
`Richard van Nee
`Erwin R. Noble
`Tomoki Ohsawa
`Kazuhiro Okanoue
`Richard H. Paine
`Roger Pandanda
`Victoria M. Poncini
`Gregory S. Rawlins
`Stanley A. Reible
`
`Frits Riep
`William Roberts
`Kent G. Rollins
`Clemens C.W. Ruppel
`Anil K. Sanwalka
`Roy Sebring
`Tie-Jun Shan
`Stephen J. Shellhammer
`Matthew B. Shoemake
`Thomas Siep
`Donald I. Sloan
`Gary Spiess
`Satoru Toguchi
`Cherry Tom
`Mike Trompower
`Tom Tsoulogiannis
`Bruce Tuch
`Sarosh N. Vesuna
`Ikuo Wakayama
`Robert M. Ward, Jr.
`Mark Webster
`Leo Wilz
`Harry R. Worstell
`Lawrence W. Yonge, III
`Chris Zegelin
`Jonathan M. Zweig
`James Zyren
`
`vi
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`Copyright © 1999 IEEE. All rights reserved.
`Authorized licensed use limited to: IEEE Staff. Downloaded on June 26,2023 at 17:16:57 UTC from IEEE Xplore. Restrictions apply.
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`The following members of the balloting committee voted on this standard:
`Raj Jain
`Carl F. Andren
`A. Kamerman
`Jack S. Andresen
`Dean M. Kawaguchi
`Lek Ariyavisitakul
`Stuart J. Kerry
`David Bagby
`Patrick Kinney
`Kevin M. Barry
`Daniel R. Krent
`John H. Cafarella
`Walter Levy
`James T. Carlo
`Stanley Ling
`David E. Carlson
`Randolph S. Little
`Linda T. Cheng
`Roger B. Marks
`Thomas J. Dineen
`Peter Martini
`Christos Douligeris
`Richard McBride
`Peter Ecclesine
`Bennett Meyer
`Richard Eckard
`David S. Millman
`Philip H. Enslow
`Hiroshi Miyano
`John Fakatselis
`Warren Monroe
`Jeffrey J. Fischer
`Masahiro Morikura
`Michael A. Fischer
`Shimon Muller
`Robert J. Gagliano
`Peter A. Murphy
`Gautam Garai
`Paul Nikolich
`Alireza Ghazizahedi
`Erwin R. Noble
`Tim Godfrey
`Satoshi Obara
`Patrick S. Gonia
`Robert O'Hara
`Steven D. Gray
`Charles Oestereicher
`Chris G. Guy
`Kazuhiro Okanoue
`Vic Hayes
`Roger Pandanda
`Allen Heberling
`Ronald C. Petersen
`Chris D. Heegard
`Al Petrick
`Juha T. Heiskala
`Vikram Punj
`
`Pete Rautenberg
`Stanley A. Reible
`Edouard Y. Rocher
`Kent Rollins
`James W. Romlein
`Floyd E. Ross
`Christoph Ruland
`Anil K. Sanwalka
`Norman Schneidewind
`James E. Schuessler
`Rich Seifert
`Matthew B. Shoemake
`Leo Sintonen
`Hitoshi Takanashi
`Mike Trompower
`Mark-Rene Uchida
`Scott A. Valcourt
`Richard Van Nee
`Sarosh N. Vesuna
`John Viaplana
`Hirohisa Wakai
`Robert M. Ward, Jr.
`Mark Webster
`Harry R. Worstell
`Stefan M. Wurster
`Oren Yuen
`Jonathan M. Zweig
`James Zyren
`
`When the IEEE-SA Standards Board approved this standard on 16 September 1999, it had the following
`membership:
`
`Richard J. Holleman, Chair
`
`
`
`Donald N. Heirman, Vice Chair
`
`Judith Gorman,
`Secretary
`
`James H. Gurney
`Lowell G. Johnson
`Robert J. Kennelly
`E. G. “Al” Kiener
`Joseph L. Koep(cid:192)nger*
`L. Bruce McClung
`Daleep C. Mohla
`Robert F. Munzner
`
`Louis-François Pau
`Ronald C. Petersen
`Gerald H. Peterson
`John B. Posey
`Gary S. Robinson
`Akio Tojo
`Hans E. Weinrich
`Donald W. Zipse
`
`Satish K. Aggarwal
`Dennis Bodson
`Mark D. Bowman
`James T. Carlo
`Gary R. Engmann
`Harold E. Epstein
`Jay Forster*
`Ruben D. Garzon
`
`**Member Emeritus
`
`Also included is the following nonvoting IEEE-SA Standards Board liaison:
`
`Robert E. Hebner
`
`Janet Rutigliano
`IEEE Standards Project Editor
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`vii
`Copyright © 1999 IEEE. All rights reserved.
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`Contents
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`Editor’s Notes....................................................................................................................................................v
`
`4.
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`Abbreviations and acronyms................................................................................................................ 2
`
`9.1 Multirate support.......................................................................................................................... 2
`10.4 PLME SAP interface.................................................................................................................... 2
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`17.
`
`OFDM PHY specification for the 5 GHz band.................................................................................... 3
`
`17.1 Introduction.................................................................................................................................. 3
`17.2 OFDM PHY specific service parameter list ................................................................................ 5
`17.3 OFDM PLCP sublayer................................................................................................................. 7
`17.4 OFDM PLME ............................................................................................................................ 34
`17.5 OFDM PMD sublayer................................................................................................................ 39
`
`Annex A (normative), Protocol Implementation Conformance Statement (PICS) proforma ....................... 46
`
`Annex D (normative), ASN.1 encoding of the MAC and PHY MIB............................................................ 51
`
`Annex G (informative), An example of encoding a frame for OFDM PHY................................................. 54
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`viii
`Copyright © 1999 IEEE. All rights reserved.
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`Supplement to IEEE Standard for
` Information technology—
`Telecommunications and information exchange
` between systems—
`Local and metropolitan area networks—
`Speci(cid:192)c requirements—
`
`Part 11: Wireless LAN Medium Access
`Control (MAC) and Physical Layer
`(PHY) speci(cid:192)cations:
`
`High-speed Physical Layer in the
`5 GHZ Band
`
`[These additions are based on IEEE Std 802.11, 1999 Edition.]
`
`EDITORIAL NOTE—The editing instructions contained in this supplement de(cid:192)ne how to merge the material contained
`herein into IEEE Std 802.11, 1999 Edition, to form the new comprehensive standard as created by the addition of IEEE
`Std 802.11a-1999.
`
`bold italic. Three editing instructions are used: change, delete, and
`
`The editing instructions are shown in
` is used to make small corrections to existing text or tables. The editing instruction speci(cid:192)es
`Change
`insert.
`the location of the change and describes what is being changed either by using strikethrough (to remove old
`
`Delete removes existing material.
`
`Insert adds new material
`material) or underscore (to add new material).
`without disturbing the existing material. Insertions may require renumbering. If so, renumbering instructions
`are given in the editing instructions. Editorial notes will not be carried over into future editions.
`
`Copyright © 1999 IEEE. All rights reserved.
`Authorized licensed use limited to: IEEE Staff. Downloaded on June 26,2023 at 17:16:57 UTC from IEEE Xplore. Restrictions apply.
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`IEEE
`Std 802.11a-1999
`
`SUPPLEMENT TO IEEE STANDARD FOR INFORMATION TECHNOLOGY—
`
`4. Abbreviations and acronyms
`
`Insert the following acronyms alphabetically in the list in Clause 4:
`
`BPSK
`C-MPDU
`FFT
`GI
`IFFT
`OFDM
`PER
`QAM
`QPSK
`U-NII
`
`binary phase shift keying
`coded MPDU
`Fast Fourier Transform
`guard interval
`inverse Fast Fourier Transform
`orthogonal frequency division multiplexing
`packet error rate
`quadrature amplitude modulation
`quadrature phase shift keying
`unlicensed national information infrastructure
`
`9.1 Multirate support
`
`Add the following text to the end of 9.6:
`
`For the 5 GHz PHY, the time required to transmit a frame for use in the Duration/ID (cid:192)eld is determined
`using the PLME-TXTIME.request primitive and the PLME-TXTIME.con(cid:192)rm primitive. The calculation
`method of TXTIME duration is de(cid:192)ned in 17.4.3.
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`10.4 PLME SAP interface
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`Add the following text to the end of 10.4:
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`Remove the references to aMPDUDurationFactor from 10.4.3.1.
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`Add the following subclauses at the end of 10.4:
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`10.4.6 PLME-TXTIME.request
`
`10.4.6.1 Function
`
`This primitive is a request for the PHY to calculate the time that will be required to transmit onto the wire-
`less medium a PPDU containing a speci(cid:192)ed length MPDU, and using a speci(cid:192)ed format, data rate, and
`signalling.
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`10.4.6.2 Semantics of the service primitive
`
`This primitive provides the following parameters:
`
`PLME-TXTIME.request(TXVECTOR)
`
`The TXVECTOR represents a list of parameters that the MAC sublayer provides to the local PHY entity in
`order to transmit a MPDU, as further described in 12.3.4.4 and 17.4 (which de(cid:192)nes the local PHY entity).
`
`2
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`HIGH-SPEED PHYSICAL LAYER IN THE 5 GHz BAND
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`10.4.6.3 When generated
`
`IEEE
`Std 802.11a-1999
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`This primitive is issued by the MAC sublayer to the PHY entity whenever the MAC sublayer needs to deter-
`mine the time required to transmit a particular MPDU.
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`10.4.6.4 Effect of receipt
`
`The effect of receipt of this primitive by the PHY entity shall be to generate a PHY-TXTIME.con(cid:192)rm primi-
`tive that conveys the required transmission time.
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`10.4.7 PLME-TXTIME.con(cid:192)rm
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`10.4.7.1 Function
`
`This primitive provides the time that will be required to transmit the PPDU described in the corresponding
`PLME-TXTIME.request.
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`10.4.7.2 Semantics of the service primitive
`
`This primitive provides the following parameters:
`
`PLME-TXTIME.con(cid:192)rm(TXTIME)
`
`The TXTIME represents the time in microseconds required to transmit the PPDU described in the corre-
`sponding PLME-TXTIME.request. If the calculated time includes a fractional microsecond, the TXTIME
`value is rounded up to the next higher integer.
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`10.4.7.3 When generated
`
`This primitive is issued by the local PHY entity in response to a PLME-TXTIME.request.
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`10.4.7.4 Effect of receipt
`
`The receipt of this primitive provides the MAC sublayer with the PPDU transmission time.
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`Add the entire Clause 17 to the base standard:
`
`17. OFDM PHY speci(cid:192)cation for the 5 GHz band
`
`17.1 Introduction
`
`This clause speci(cid:192)es the PHY entity for an orthogonal frequency division multiplexing (OFDM) system and
`the additions that have to be made to the base standard to accommodate the OFDM PHY. The radio fre-
`quency LAN system is initially aimed for the 5.15–5.25, 5.25–5.35 and 5.725–5.825 GHz unlicensed
`national information structure (U-NII) bands, as regulated in the United States by the Code of Federal Regu-
`lations, Title 47, Section 15.407. The OFDM system provides a wireless LAN with data payload communi-
`cation capabilities of 6, 9, 12, 18, 24, 36, 48, and 54 Mbit/s. The support of transmitting and receiving at data
`rates of 6, 12, and 24 Mbit/s is mandatory. The system uses 52 subcarriers that are modulated using binary or
`quadrature phase shift keying (BPSK/QPSK), 16-quadrature amplitude modulation (QAM), or 64-QAM.
`Forward error correction coding (convolutional coding) is used with a coding rate of 1/2, 2/3, or 3/4.
`
`Copyright © 1999 IEEE. All rights reserved.
`Authorized licensed use limited to: IEEE Staff. Downloaded on June 26,2023 at 17:16:57 UTC from IEEE Xplore. Restrictions apply.
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`IEEE
`Std 802.11a-1999
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`17.1.1 Scope
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`SUPPLEMENT TO IEEE STANDARD FOR INFORMATION TECHNOLOGY—
`
`This subclause describes the PHY services provided to the IEEE 802.11 wireless LAN MAC by the 5 GHz
`(bands) OFDM system. The OFDM PHY layer consists of two protocol functions, as follows:
`
`a) A PHY convergence function, which adapts the capabilities of the physical medium dependent
`(PMD) system to the PHY service. This function is supported by the physical layer convergence pro-
`cedure (PLCP), which de(cid:192)nes a method of mapping the IEEE 802.11 PHY sublayer service data
`units (PSDU) into a framing format suitable for sending and receiving user data and management
`information between two or more stations using the associated PMD system.
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`b) A PMD system whose function de(cid:192)nes the characteristics and method of transmitting and receiving
`data through a wireless medium between two or more stations, each using the OFDM system.
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`17.1.2 OFDM PHY functions
`
`The 5 GHz OFDM PHY architecture is depicted in the reference model shown in Figure 11 of IEEE Std
`802.11, 1999 Edition (5.8). The OFDM PHY contains three functional entities: the PMD function, the PHY
`convergence function, and the layer management function. Each of these functions is described in detail in
`17.1.2.1 through 17.1.2.4.
`
`The OFDM PHY service is provided to the MAC through the PHY service primitives described in Clause 12
`of IEEE Std 802.11, 1999 Edition.
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`17.1.2.1 PLCP sublayer
`
`In order to allow the IEEE 802.11 MAC to operate with minimum dependence on the PMD sublayer, a PHY
`convergence sublayer is de(cid:192)ned. This function simpli(cid:192)es the PHY service interface to the IEEE 802.11
`MAC services.
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`17.1.2.2 PMD sublayer
`
`The PMD sublayer provides a means to send and receive data between two or more stations. This clause is
`concerned with the 5 GHz band using OFDM modulation.
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`17.1.2.3 PHY management entity (PLME)
`
`The PLME performs management of the local PHY functions in conjunction with the MAC management
`entity.
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`17.1.2.4 Service speci(cid:192)cation method
`
`The models represented by (cid:192)gures and state diagrams are intended to be illustrations of the functions pro-
`vided. It is important to distinguish between a model and a real implementation. The models are optimized
`for simplicity and clarity of presentation; the actual method of implementation is left to the discretion of the
`IEEE 802.11 OFDM PHY compliant developer.
`
`The service of a layer or sublayer is the set of capabilities that it offers to a user in the next higher layer (or
`sublayer). Abstract services are speci(cid:192)ed here by describing the service primitives and parameters that char-
`acterize each service. This de(cid:192)nition is independent of any particular implementation.
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`4
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`HIGH-SPEED PHYSICAL LAYER IN THE 5 GHz BAND
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`17.2 OFDM PHY speci(cid:192)c service parameter list
`
`17.2.1 Introduction
`
`IEEE
`Std 802.11a-1999
`
`The architecture of the IEEE 802.11 MAC is intended to be PHY independent. Some PHY implementations
`require medium management state machines running in the MAC sublayer in order to meet certain PMD
`requirements. These PHY-dependent MAC state machines reside in a sublayer de(cid:192)ned as the MAC sublayer
`management entity (MLME). In certain PMD implementations, the MLME may need to interact with the
`PLME as part of the normal PHY SAP primitives. These interactions are de(cid:192)ned by the PLME parameter list
`currently de(cid:192)ned in the PHY service primitives as TXVECTOR and RXVECTOR. The list of these parame-
`ters, and the values they may represent, are de(cid:192)ned in the speci(cid:192)c PHY speci(cid:192)cations for each PMD. This
`subclause addresses the TXVECTOR and RXVECTOR for the OFDM PHY.
`
`17.2.2 TXVECTOR parameters
`
`The parameters in Table 76 are de(cid:191)ned as part of the TXVECTOR parameter list in the PHY-
`TXSTART.request service primitive.
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`Table 76—TXVECTOR parameters
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`Parameter
`
`Associate primitive
`
`Value
`
`LENGTH
`
`DATATRATE
`
`PHY-TXSTART.request
`(TXVECTOR)
`
`1–4095
`
`PHY-TXSTART.request
`(TXVECTOR)
`
`6, 9, 12, 18, 24, 36, 48,
`and 54
`(Support of 6, 12, and
`24 data rates is manda-
`tory.)
`