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Multi-AP_Specification_v2.0.pdf
Multi-AP
Specification
Version 2.0
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© 2019 Wi-Fi Alliance. All Rights Reserved.
Multi-AP Specification v2.0
Version
Date YYYY-MM-DD
Remarks
Document revision history
1.0
2.0
2018-06-18
2019-12-18
Initial release.
Updated with Profile-2 features
Used with the permission of Wi-Fi Alliance under the terms as stated in this document.
© 2019 Wi-Fi Alliance. All Rights Reserved.
Page 2 of 113
Multi-AP Specification v2.0
1
2
3
4
5
6
7
8
9
10
11
Table of contents
OVERVIEW................................................................................................................................................................... 9
1.1
Scope ............................................................................................................................................................ 9
Purpose ......................................................................................................................................................... 9
1.2
REFERENCES ........................................................................................................................................................... 10
DEFINITIONS AND ACRONYMS .............................................................................................................................. 11
3.1.1 Shall/should/may/might word usage .............................................................................................. 11
3.1.2 Conventions ................................................................................................................................... 11
3.1.3 Definitions ...................................................................................................................................... 11
3.1.4 Abbreviations and acronyms .......................................................................................................... 13
ARCHITECTURE ........................................................................................................................................................ 15
Multi-AP architecture ................................................................................................................................... 15
4.1
4.1.1 Multi-AP example deployment ....................................................................................................... 15
MULTI-AP ONBOARDING ......................................................................................................................................... 19
1905 Push Button Configuration method .................................................................................................... 19
5.1
5.2
PBC Backhaul STA onboarding procedure................................................................................................. 19
MULTI-AP DISCOVERY ............................................................................................................................................. 22
6.1
Multi-AP controller discovery ...................................................................................................................... 22
Multi-AP service discovery .......................................................................................................................... 23
6.2
6.3
Client association and disassociation notification ....................................................................................... 23
MULTI-AP CONFIGURATION .................................................................................................................................... 25
7.1
AP configuration .......................................................................................................................................... 25
AP operational BSS reporting ..................................................................................................................... 27
7.2
7.3
Policy configuration ..................................................................................................................................... 27
CHANNEL SELECTION ............................................................................................................................................. 29
8.1
Channel Preference Query and Report ...................................................................................................... 29
Channel Selection Request and Report ...................................................................................................... 29
8.2
8.2.1 Coordinated DFS CAC ................................................................................................................... 31
8.2.2 DFS CAC Scan Requirements on a Multi-AP Controller ............................................................... 31
8.2.3 DFS CAC Scan Requirements on a Multi-AP Agent ..................................................................... 31
CAPABILITY INFORMATION REPORTING .............................................................................................................. 33
AP capability ............................................................................................................................................... 33
9.1
Client capability ........................................................................................................................................... 33
9.2
9.3
Backhaul STA capability ............................................................................................................................. 34
LINK METRIC COLLECTION ..................................................................................................................................... 35
Backhaul link metrics .................................................................................................................................. 35
10.1
Per-AP metrics and bulk STA metrics ......................................................................................................... 35
10.2
10.2.1 Link metric measurements from the AP ........................................................................................ 35
10.2.2 Channel Scan ................................................................................................................................ 36
Per-STA measurements .............................................................................................................................. 38
10.3.1 Associated STA link measurements from the AP ......................................................................... 38
10.3.2 Unassociated STA RCPI measurements from the AP .................................................................. 39
10.3.3 802.11 beacon measurements from the client .............................................................................. 40
Combined infrastructure metrics ................................................................................................................. 40
10.3
10.4
CLIENT STEERING .................................................................................................................................................... 42
11.1
Multi-AP Controller initiated steering mandate ........................................................................................... 42
Multi-AP Controller initiated steering opportunity ........................................................................................ 42
11.2
Multi-AP Agent initiated RCPI-based steering ............................................................................................ 43
11.3
11.3.1 RCPI-based steering rules ............................................................................................................ 43
Multi-AP Agent determination of target BSS ............................................................................................... 43
11.4
Used with the permission of Wi-Fi Alliance under the terms as stated in this document.
© 2019 Wi-Fi Alliance. All Rights Reserved.
Page 3 of 113
Multi-AP Specification v2.0
11.5
11.6
11.7
Steering mechanisms .................................................................................................................................. 43
Client association control mechanism ......................................................................................................... 44
Wi-Fi Agile Multiband and Tunneled Message support .............................................................................. 45
12
BACKHAUL OPTIMIZATION ...................................................................................................................................... 47
12.1
Backhaul optimization by backhaul station association control .................................................................. 47
13 MULTI-AP MESSAGING SECURITY ......................................................................................................................... 49
14
FOUR-ADDRESS MAC HEADER FORMAT .............................................................................................................. 50
Wi-Fi backhaul frame and address handling............................................................................................... 50
14.1
14.1.1 Receiver requirements .................................................................................................................. 50
14.1.2 Transmitter requirements .............................................................................................................. 50
14.1.3 Wired backhaul frame and address handling ............................................................................... 51
15.1
15 MULTI-AP CONTROL MESSAGING RELIABILITY ................................................................................................... 52
CMDU reliable multicast transmission ........................................................................................................ 52
15.1.1 CMDU reliable multicast transmission procedures ....................................................................... 52
15.1.2 CMDU reliable multicast reception procedures ............................................................................ 52
16
HIGHER LAYER DATA PAYLOAD OVER 1905 ........................................................................................................ 53
17.1
17 MULTI-AP CONTROL MESSAGING ......................................................................................................................... 54
Multi-AP message format ............................................................................................................................ 54
17.1.1 1905 AP-Autoconfiguration Search message format (extended) ................................................. 61
17.1.2 1905 AP-Autoconfiguration Response message format (extended) ............................................ 61
17.1.3 1905 AP-Autoconfiguration WSC message format (extended) .................................................... 61
17.1.4 1905 Topology Response message format (extended) ................................................................ 61
17.1.5 1905 Topology Notification message format (extended) .............................................................. 62
17.1.6 AP Capability Query message format ........................................................................................... 62
17.1.7 AP Capability Report message format .......................................................................................... 62
17.1.8 Multi-AP Policy Config Request message format ......................................................................... 62
17.1.9 Channel Preference Query message format ................................................................................ 62
17.1.10 Channel Preference Report message format ............................................................................. 62
17.1.11 Channel Selection Request message format ............................................................................. 62
17.1.12 Channel Selection Response message format ........................................................................... 63
17.1.13 Operating Channel Report message format ............................................................................... 63
17.1.14 Client Capability Query message format .................................................................................... 63
17.1.15 Client Capability Report message format ................................................................................... 63
17.1.16 AP Metrics Query Message format ............................................................................................. 63
17.1.17 AP Metrics Response Message format....................................................................................... 63
17.1.18 Associated STA Link Metrics Query message format ................................................................ 63
17.1.19 Associated STA Link Metrics Response message format .......................................................... 63
17.1.20 Unassociated STA Link Metrics Query message format ............................................................ 64
17.1.21 Unassociated STA Link Metrics Response message format ...................................................... 64
17.1.22 Beacon Metrics Query message format ..................................................................................... 64
17.1.23 Beacon Metrics Response message format ............................................................................... 64
17.1.24 Combined Infrastructure Metrics message format ...................................................................... 64
17.1.25 Client Steering Request message format ................................................................................... 64
17.1.26 Client Steering BTM Report message format ............................................................................. 64
17.1.27 Client Association Control Request message format ................................................................. 65
17.1.28 Steering Completed message format ......................................................................................... 65
17.1.29 Backhaul Steering Request message format ............................................................................. 65
17.1.30 Backhaul Steering Response message format ........................................................................... 65
17.1.31 Higher Layer Data message format ............................................................................................ 65
17.1.32 1905 Ack message format .......................................................................................................... 65
17.1.33 Channel Scan Request message format .................................................................................... 65
17.1.34 Channel Scan Report message format ....................................................................................... 65
17.1.35 CAC Request message format ................................................................................................... 65
17.1.36 CAC Termination message format .............................................................................................. 65
17.1.37 Error Response message format ................................................................................................ 66
Used with the permission of Wi-Fi Alliance under the terms as stated in this document.
© 2019 Wi-Fi Alliance. All Rights Reserved.
Page 4 of 113
Multi-AP Specification v2.0
17.2
17.1.38 Topology Query message format ................................................................................................ 66
17.1.39 Association Status Notification message format ......................................................................... 66
17.1.40 Tunneled message format .......................................................................................................... 66
17.1.41 Client Disassociation Stats message format .............................................................................. 66
17.1.42 Backhaul STA Capability Query message format ....................................................................... 66
17.1.43 Backhaul STA Capability Report message format ...................................................................... 66
17.1.44 Failed Connection message ....................................................................................................... 66
Multi-AP TLVs format .................................................................................................................................. 67
17.2.1 SupportedService TLV format ....................................................................................................... 67
17.2.2 SearchedService TLV format ........................................................................................................ 67
17.2.3 AP Radio Identifier TLV format ..................................................................................................... 67
17.2.4 AP Operational BSS TLV format ................................................................................................... 67
17.2.5 Associated Clients TLV format ...................................................................................................... 68
17.2.6 AP Capability TLV format .............................................................................................................. 68
17.2.7 AP Radio Basic Capabilities TLV format ...................................................................................... 69
17.2.8 AP HT Capabilities TLV format ..................................................................................................... 69
17.2.9 AP VHT Capabilities TLV format ................................................................................................... 70
17.2.10 AP HE Capabilities TLV format ................................................................................................... 71
17.2.11 Steering Policy TLV format ......................................................................................................... 72
17.2.12 Metric Reporting Policy TLV format ............................................................................................ 73
17.2.13 Channel Preference TLV format ................................................................................................. 74
17.2.14 Radio Operation Restriction TLV format ..................................................................................... 75
17.2.15 Transmit Power Limit TLV format ............................................................................................... 76
17.2.16 Channel Selection Response TLV format ................................................................................... 76
17.2.17 Operating Channel Report TLV format ....................................................................................... 77
17.2.18 Client Info TLV format ................................................................................................................. 77
17.2.19 Client Capability Report TLV format ........................................................................................... 77
17.2.20 Client Association Event TLV format .......................................................................................... 78
17.2.21 AP Metric Query TLV format ....................................................................................................... 78
17.2.22 AP Metrics TLV format ................................................................................................................ 78
17.2.23 STA MAC Address Type TLV format .......................................................................................... 79
17.2.24 Associated STA Link Metrics TLV format ................................................................................... 79
17.2.25 Unassociated STA Link Metrics Query TLV format .................................................................... 80
17.2.26 Unassociated STA Link Metrics Response TLV format .............................................................. 80
17.2.27 Beacon Metrics Query TLV format .............................................................................................. 81
17.2.28 Beacon Metrics Response TLV format ....................................................................................... 82
17.2.29 Steering Request TLV format ..................................................................................................... 82
17.2.30 Steering BTM Report TLV format ............................................................................................... 83
17.2.31 Client Association Control Request TLV format ......................................................................... 84
17.2.32 Backhaul Steering Request TLV format ..................................................................................... 84
17.2.33 Backhaul Steering Response TLV format ................................................................................... 85
17.2.34 Higher Layer Data TLV format .................................................................................................... 85
17.2.35 Associated STA Traffic Stats TLV format ................................................................................... 85
17.2.36 Error Code TLV format ................................................................................................................ 86
17.2.37 Channel Scan Reporting Policy TLV format ............................................................................... 87
17.2.38 Channel Scan Capabilities TLV format ....................................................................................... 87
17.2.39 Channel Scan Request TLV format ............................................................................................ 88
17.2.40 Channel Scan Result TLV format ............................................................................................... 89
17.2.41 Timestamp TLV format ............................................................................................................... 91
17.2.42 CAC Request TLV format ........................................................................................................... 91
17.2.43 CAC Termination TLV format ...................................................................................................... 92
17.2.44 CAC Completion Report TLV format........................................................................................... 93
17.2.45 CAC Status Report TLV format ................................................................................................... 93
17.2.46 CAC Capabilities TLV format ...................................................................................................... 94
17.2.47 Multi-AP Profile TLV format ........................................................................................................ 95
17.2.48 Profile-2 AP Capability TLV format ............................................................................................. 96
17.2.49 Default 802.1Q Settings TLV format ........................................................................................... 96
17.2.50 Traffic Separation Policy TLV format .......................................................................................... 96
Used with the permission of Wi-Fi Alliance under the terms as stated in this document.
© 2019 Wi-Fi Alliance. All Rights Reserved.
Page 5 of 113
Multi-AP Specification v2.0
17.2.51 Profile-2 Error Code TLV format ................................................................................................. 97
17.2.52 AP Radio Advanced Capabilities TLV format ............................................................................. 97
17.2.53 Association Status Notification TLV format ................................................................................. 97
17.2.54 Source Info TLV format ............................................................................................................... 98
17.2.55 Tunneled message type TLV format ........................................................................................... 98
17.2.56 Tunneled TLV format .................................................................................................................. 98
17.2.57 Profile-2 Steering Request TLV format ....................................................................................... 99
17.2.58 Unsuccessful Association Policy TLV format ............................................................................ 100
17.2.59 Metric Collection Interval TLV format ........................................................................................ 100
17.2.60 Radio Metrics TLV format ......................................................................................................... 101
17.2.61 AP Extended Metrics TLV format .............................................................................................. 101
17.2.62 Associated STA Extended Link Metrics TLV format ................................................................. 102
17.2.63 Status Code TLV format ........................................................................................................... 102
17.2.64 Reason Code TLV format ......................................................................................................... 103
17.2.65 Backhaul STA Radio Capabilities TLV format .......................................................................... 103
17.2.66 Backhaul BSS Configuration TLV ............................................................................................. 103
18 MULTI-AP PROFILES .............................................................................................................................................. 104
19
TRAFFIC SEPARATION .......................................................................................................................................... 106
19.1
Traffic Separation in Multi-AP Network ..................................................................................................... 106
19.1.1 Traffic Separation Overview (Informative) .................................................................................. 106
19.1.2 Multi-AP Controller Requirements .............................................................................................. 108
19.1.3 Multi-AP Agent Requirements ..................................................................................................... 108
VLAN Tagging in Multi-AP ........................................................................................................................ 110
19.2
APPENDIX A
A.1
A.2
A.3
(INFORMATIVE) MISCELLANEOUS ....................................................................................................... 112
Higher layer protocol field definition (see 16) ........................................................................................... 112
Indication of associated 802.11 clients ..................................................................................................... 112
Implementation Notes (Informative) .......................................................................................................... 112
A.3.1 Traffic Separation ......................................................................................................................... 112
A.3.2 Controller implementation for Policy Set Up ................................................................................ 112
A.3.3 Fragmentation of IEEE 1905 ........................................................................................................ 112
A.3.4 Multi-AP Logical Ethernet Interfaces ............................................................................................ 112
Used with the permission of Wi-Fi Alliance under the terms as stated in this document.
© 2019 Wi-Fi Alliance. All Rights Reserved.
Page 6 of 113
Multi-AP Specification v2.0
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
Table 16.
Table 17.
Table 18.
Table 19.
Table 20.
Table 21.
Table 22.
Table 23.
Table 24.
Table 25.
Table 26.
Table 27.
Table 28.
Table 29.
Table 30.
Table 31.
Table 32.
Table 33.
Table 34.
Table 35.
Table 36.
Table 37.
Table 38.
Table 39.
Table 40.
Table 41.
Table 42.
Table 43.
Table 44.
Table 45.
Table 46.
Table 47.
Table 48.
Table 49.
Table 50.
Table 51.
Table 52.
Table 53.
Table 54.
Table 55.
Table 56.
List of tables
Definitions ................................................................................................................................................... 11
Abbreviations and acronyms ....................................................................................................................... 14
Multi-AP IE format ....................................................................................................................................... 21
Multi-AP Default 802.1Q Setting subelement format .................................................................................. 21
Extension of 1905 Media type Table 6-12 in [2] ......................................................................................... 22
Extension of Authentication Types Table 32 in [5] ...................................................................................... 25
Multi-AP Extension subelement .................................................................................................................. 26
Multi-AP Profile subelement ........................................................................................................................ 27
Message types ............................................................................................................................................ 54
Message Content by Profile ........................................................................................................................ 58
SupportedService TLV format ..................................................................................................................... 67
SearchedService TLV format ...................................................................................................................... 67
AP Radio Identifier TLV format ................................................................................................................... 67
AP Operational BSS TLV format ................................................................................................................. 68
Associated Clients TLV format .................................................................................................................... 68
AP Capability TLV format ............................................................................................................................ 68
AP Radio Basic Capabilities TLV format ..................................................................................................... 69
AP HT Capabilities TLV format ................................................................................................................... 69
AP VHT Capabilities TLV format ................................................................................................................. 70
AP HE Capabilities TLV format ................................................................................................................... 71
Steering Policy TLV format ......................................................................................................................... 72
Metric Reporting Policy TLV format ............................................................................................................ 73
Channel Preference TLV format ................................................................................................................. 74
Radio Operation Restriction TLV format ..................................................................................................... 75
Transmit Power Limit TLV format ............................................................................................................... 76
Channel Selection Response TLV format ................................................................................................... 76
Operating Channel Report TLV format ....................................................................................................... 77
Client Info TLV format ................................................................................................................................. 77
Client Capability Report TLV format ........................................................................................................... 77
Client Association Event TLV format .......................................................................................................... 78
AP Metric Query TLV format ....................................................................................................................... 78
AP Metrics TLV format ................................................................................................................................ 78
STA MAC Address Type TLV format .......................................................................................................... 79
Associated STA Link Metrics TLV format ................................................................................................... 80
Unassociated STA Link Metrics Query TLV format .................................................................................... 80
Unassociated STA Link Metrics Response TLV format .............................................................................. 81
Beacon Metrics Query TLV format .............................................................................................................. 81
Beacon Metrics Response TLV format ....................................................................................................... 82
Steering Request TLV format ..................................................................................................................... 82
Steering BTM Report TLV format ............................................................................................................... 83
Client Association Control Request TLV format ......................................................................................... 84
Backhaul Steering Request TLV format ...................................................................................................... 84
Backhaul Steering Response TLV format ................................................................................................... 85
Higher Layer Data TLV format .................................................................................................................... 85
Associated STA Traffic Stats TLV ............................................................................................................... 85
Error Code TLV format ................................................................................................................................ 86
Channel Scan Reporting Policy TLV ........................................................................................................... 87
Channel Scan Capabilities TLV .................................................................................................................. 88
Channel Scan Request TLV ....................................................................................................................... 89
Channel Scan Result TLV ........................................................................................................................... 89
Timestamp TLV ........................................................................................................................................... 91
CAC Request TLV format ........................................................................................................................... 92
CAC Termination TLV format ...................................................................................................................... 92
CAC Completion Report TLV format ........................................................................................................... 93
CAC Status Report TLV format ................................................................................................................... 93
CAC Capabilities TLV format ...................................................................................................................... 94
Used with the permission of Wi-Fi Alliance under the terms as stated in this document.
© 2019 Wi-Fi Alliance. All Rights Reserved.
Page 7 of 113
Multi-AP Specification v2.0
Table 57.
Table 58.
Table 59.
Table 60.
Table 61.
Table 62.
Table 63.
Table 64.
Table 65.
Table 66.
Table 67.
Table 68.
Table 69.
Table 70.
Table 71.
Table 72.
Table 73.
Table 74.
Table 75.
Table 76.
Table 77.
Table 78.
Multi-AP Profile TLV format ........................................................................................................................ 95
Profile-2 AP Capability TLV format ............................................................................................................. 96
Default 802.1Q Settings TLV format ........................................................................................................... 96
Traffic Separation Policy TLV format .......................................................................................................... 96
Profile-2 Error Code TLV format ................................................................................................................. 97
AP Radio Advanced Capabilities TLV format ............................................................................................. 97
Association Status Notification TLV format ................................................................................................. 98
Source Info TLV format ............................................................................................................................... 98
Tunneled message type TLV format ........................................................................................................... 98
Tunneled TLV format .................................................................................................................................. 99
Profile-2 Steering Request TLV format ....................................................................................................... 99
Unsuccessful Association Policy TLV format ............................................................................................ 100
Metric Collection Interval TLV format ........................................................................................................ 100
Radio Metrics TLV format ......................................................................................................................... 101
AP Extended Metrics TLV format .............................................................................................................. 101
Associated STA Extended Link Metrics TLV format ................................................................................. 102
Status Code TLV format............................................................................................................................ 102
Reason Code TLV format ......................................................................................................................... 103
Backhaul STA Radio Capabilities TLV format .......................................................................................... 103
Backhaul BSS Configuration TLV format .................................................................................................. 103
Profile Section Applicability ....................................................................................................................... 104
Higher layer protocol field definition .......................................................................................................... 112
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Multi-AP example deployment 1 ................................................................................................................. 16
Multi-AP example deployment 2 ................................................................................................................. 17
Multi-AP example deployment 3 ................................................................................................................. 18
Onboarding/Configuring BSS ...................................................................................................................... 19
Example Network Configuration with Traffic Separation Enabled ............................................................ 107
IEEE 802.11 frame with 802.1Q C-TAG ................................................................................................... 111
Ethernet frame with 802.1Q C-TAG .......................................................................................................... 111
Used with the permission of Wi-Fi Alliance under the terms as stated in this document.
© 2019 Wi-Fi Alliance. All Rights Reserved.
Page 8 of 113
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