Multi-APspecificationversion1.0

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Used with the permission of Wi-Fi Alliance under the terms as stated in this document.

Multi-AP

Specification

Version 1.0

WI-FI ALLIANCE PROPRIETARY – SUBJECT TO CHANGE WITHOUT NOTICE

This document may be used with the permission of Wi-Fi Alliance under the terms set forth herein.

By your use of the document, you are agreeing to these terms. Unless this document is clearly designated

as an approved specification, this document is a work in process and is not an approved Wi-Fi Alliance

specification. This document is subject to revision or removal at any time without notice. Information

contained in this document may be used at your sole risk. Wi-Fi Alliance assumes no responsibility for

errors or omissions in this document. This copyright permission does not constitute an endorsement of the

products or services. Wi-Fi Alliance trademarks and certification marks may not be used unless specifically

allowed by Wi-Fi Alliance.

Wi-Fi Alliance has not conducted an independent intellectual property rights ("IPR") review of this document

and the information contained herein, and makes no representations or warranties regarding IPR, including

without limitation patents, copyrights or trade secret rights. This document may contain inventions for which

you must obtain licenses from third parties before making, using or selling the inventions.

Wi-Fi Alliance owns the copyright in this document and reserves all rights therein. A user of this document

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NO REPRESENTATIONS OR WARRANTIES (WHETHER EXPRESS OR IMPLIED) ARE MADE BY WI-

FI ALLIANCE AND WI-FI ALLIANCE IS NOT LIABLE FOR AND HEREBY DISCLAIMS ANY DIRECT,

INDIRECT, PUNITIVE, SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES

ARISING OUT OF OR IN CONNECTION WITH THE USE OF THIS DOCUMENT AND ANY

INFORMATION CONTAINED IN THIS DOCUMENT.

Multi-AP Specification v1.0

Used with the permission of Wi-Fi Alliance under the terms as stated in this document.

Page 3 of 66

Table of contents

1 OVERVIEW................................................................................................................................................................... 7

1.1 Scope ............................................................................................................................................................ 7

1.2 Purpose ......................................................................................................................................................... 7

2 REFERENCES ............................................................................................................................................................. 8

3 DEFINITIONS AND ACRONYMS ................................................................................................................................ 9

3.1.1 Shall/should/may/might word usage ................................................................................................ 9

3.1.2 Conventions ..................................................................................................................................... 9

3.1.3 Definitions ........................................................................................................................................ 9

3.1.4 Abbreviations and acronyms .......................................................................................................... 10

4 ARCHITECTURE ........................................................................................................................................................ 12

4.1 Multi-AP architecture ................................................................................................................................... 12

4.1.1 Multi-AP example deployment ....................................................................................................... 12

5 MULTI-AP ONBOARDING ......................................................................................................................................... 16

5.1 1905 Push Button Configuration method .................................................................................................... 16

5.2 Backhaul STA onboarding procedure ......................................................................................................... 16

6 MULTI-AP DISCOVERY ............................................................................................................................................. 18

6.1 Multi-AP controller discovery ...................................................................................................................... 18

6.2 Multi-AP service discovery .......................................................................................................................... 18

6.3 Client association and disassociation notification ....................................................................................... 18

7 MULTI-AP CONFIGURATION .................................................................................................................................... 20

7.1 AP configuration .......................................................................................................................................... 20

7.2 AP operational BSS reporting ..................................................................................................................... 21

7.3 Policy configuration ..................................................................................................................................... 21

8 CHANNEL SELECTION ............................................................................................................................................. 22

8.1 Channel Preference Query and Report ...................................................................................................... 22

8.2 Channel Selection Request and Report ...................................................................................................... 22

9 CAPABILITY INFORMATION REPORTING .............................................................................................................. 25

9.1 AP capability ............................................................................................................................................... 25

9.2 Client capability ........................................................................................................................................... 25

10 LINK METRIC COLLECTION ..................................................................................................................................... 26

10.1 Backhaul link metrics .................................................................................................................................. 26

10.2 Per-AP link metrics ...................................................................................................................................... 26

10.2.1 Link metric measurements from the AP ........................................................................................ 26

10.3 Per-STA measurements.............................................................................................................................. 27

10.3.1 Associated STA link measurements from the AP ......................................................................... 27

10.3.2 Unassociated STA RCPI measurements from the AP .................................................................. 28

10.3.3 802.11 beacon measurements from the client .............................................................................. 28

10.4 Combined infrastructure metrics ................................................................................................................. 29

11 CLIENT STEERING .................................................................................................................................................... 30

11.1 Multi-AP Controller initiated steering mandate ........................................................................................... 30

11.2 Multi-AP Controller initiated steering opportunity ........................................................................................ 30

11.3 Multi-AP Agent initiated RCPI-based steering ............................................................................................ 31

11.3.1 RCPI-based steering rules ............................................................................................................ 31

11.4 Multi-AP Agent determination of target BSS ............................................................................................... 31

11.5 Steering mechanisms .................................................................................................................................. 31

11.6 Client association control mechanism ......................................................................................................... 32

12 BACKHAUL OPTIMIZATION ...................................................................................................................................... 34

13 MULTI-AP MESSAGING SECURITY ......................................................................................................................... 35

14 FOUR-ADDRESS MAC HEADER FORMAT .............................................................................................................. 36

Multi-AP Specification v1.0

Used with the permission of Wi-Fi Alliance under the terms as stated in this document.

Page 4 of 66

14.1 Wi-Fi backhaul frame and address handling............................................................................................... 36

14.1.1 Receiver requirements .................................................................................................................. 36

14.1.2 Transmitter requirements .............................................................................................................. 36

14.1.3 Wired backhaul frame and address handling ............................................................................... 37

15 MULTI-AP CONTROL MESSAGING RELIABILITY ................................................................................................... 38

15.1 CMDU reliable multicast transmission ........................................................................................................ 38

15.1.1 CMDU reliable multicast transmission procedures ....................................................................... 38

15.1.2 CMDU reliable multicast reception procedures ............................................................................ 38

16 HIGHER LAYER DATA PAYLOAD OVER 1905 ........................................................................................................ 39

17 MULTI-AP CONTROL MESSAGING ......................................................................................................................... 40

17.1 Multi-AP message format ............................................................................................................................ 40

17.1.1 1905 AP-Autoconfiguration Search message format (extended) ................................................. 41

17.1.2 1905 AP-Autoconfiguration Response message format (extended) ............................................ 41

17.1.3 1905 AP-Autoconfiguration WSC message format (extended) .................................................... 42

17.1.4 1905 Topology Response message format (extended) ................................................................ 42

17.1.5 1905 Topology Notification message format (extended) .............................................................. 42

17.1.6 AP Capability Query message format ........................................................................................... 42

17.1.7 AP Capability Report message format .......................................................................................... 42

17.1.8 Multi-AP Policy Config Request message format ......................................................................... 42

17.1.9 Channel Preference Query message format ................................................................................ 42

17.1.10 Channel Preference Report message format ............................................................................. 42

17.1.11 Channel Selection Request message format ............................................................................. 43

17.1.12 Channel Selection Response message format ........................................................................... 43

17.1.13 Operating Channel Report message format ............................................................................... 43

17.1.14 Client Capability Query message format .................................................................................... 43

17.1.15 Client Capability Report message format ................................................................................... 43

17.1.16 AP Metrics Query Message format ............................................................................................. 43

17.1.17 AP Metrics Response Message format ...................................................................................... 43

17.1.18 Associated STA Link Metrics Query message format ................................................................ 43

17.1.19 Associated STA Link Metrics Response message format .......................................................... 44

17.1.20 Unassociated STA Link Metrics Query message format ............................................................ 44

17.1.21 Unassociated STA Link Metrics Response message format ...................................................... 44

17.1.22 Beacon Metrics Query message format ..................................................................................... 44

17.1.23 Beacon Metrics Response message format ............................................................................... 44

17.1.24 Combined Infrastructure Metrics message format ...................................................................... 44

17.1.25 Client Steering Request message format ................................................................................... 44

17.1.26 Client Steering BTM Report message format ............................................................................. 44

17.1.27 Client Association Control Request message format ................................................................. 45

17.1.28 Steering Completed message format ......................................................................................... 45

17.1.29 Backhaul Steering Request message format ............................................................................. 45

17.1.30 Backhaul Steering Response message format ........................................................................... 45

17.1.31 Higher Layer Data message format ............................................................................................ 45

17.1.32 1905 Ack message format .......................................................................................................... 45

17.2 Multi-AP TLVs format .................................................................................................................................. 45

17.2.1 SupportedService TLV format ....................................................................................................... 45

17.2.2 SearchedService TLV format ........................................................................................................ 46

17.2.3 AP Radio Identifier TLV format ..................................................................................................... 46

17.2.4 AP Operational BSS TLV format ................................................................................................... 46

17.2.5 Associated Clients TLV format ...................................................................................................... 46

17.2.6 AP Capability TLV format .............................................................................................................. 47

17.2.7 AP Radio Basic Capabilities TLV format....................................................................................... 47

17.2.8 AP HT Capabilities TLV format ..................................................................................................... 48

17.2.9 AP VHT Capabilities TLV format ................................................................................................... 48

17.2.10 AP HE Capabilities TLV format ................................................................................................... 49

17.2.11 Steering Policy TLV format ......................................................................................................... 51

17.2.12 Metric Reporting Policy TLV format ............................................................................................ 51

17.2.13 Channel Preference TLV format ................................................................................................. 52

Multi-AP Specification v1.0

Used with the permission of Wi-Fi Alliance under the terms as stated in this document.

Page 5 of 66

17.2.14 Radio Operation Restriction TLV format ..................................................................................... 54

17.2.15 Transmit Power Limit TLV format ............................................................................................... 55

17.2.16 Channel Selection Response TLV format ................................................................................... 55

17.2.17 Operating Channel Report TLV format ....................................................................................... 55

17.2.18 Client Info TLV format ................................................................................................................. 56

17.2.19 Client Capability Report TLV format ........................................................................................... 56

17.2.20 Client Association Event TLV format .......................................................................................... 56

17.2.21 AP Metric Query TLV format ....................................................................................................... 57

17.2.22 AP Metrics TLV format ................................................................................................................ 57

17.2.23 STA MAC Address Type TLV format .......................................................................................... 58

17.2.24 Associated STA Link Metrics TLV format ................................................................................... 58

17.2.25 Unassociated STA Link Metrics Query TLV format .................................................................... 59

17.2.26 Unassociated STA Link Metrics Response TLV format .............................................................. 59

17.2.27 Beacon Metrics Query TLV format .............................................................................................. 60

17.2.28 Beacon Metrics Response TLV format ....................................................................................... 60

17.2.29 Steering Request TLV format ..................................................................................................... 61

17.2.30 Steering BTM Report TLV format ............................................................................................... 62

17.2.31 Client Association Control Request TLV format ......................................................................... 63

17.2.32 Backhaul Steering Request TLV format ..................................................................................... 63

17.2.33 Backhaul Steering Response TLV format ................................................................................... 63

17.2.34 Higher Layer Data TLV format .................................................................................................... 64

17.2.35 Associated STA Traffic Stats TLV............................................................................................... 64

17.2.36 Error Code TLV format ................................................................................................................ 65

APPENDIX A (INFORMATIVE) MISCELLANEOUS ......................................................................................................... 66

A.1 Higher layer protocol field definition (see 16).............................................................................................. 66

A.2 Indication of associated 802.11 clients ....................................................................................................... 66