IEEE 802.11az-2022

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IEEE Standard for Information Technology–Telecommunications and Information Exchange between Systems Local and Metropolitan Area Networks–Specific Requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications Amendment 4: Enhancements for Positioning (Published)

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IEEE	2022

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Description

Amendment Standard – Active. This amendment defines modifications to both the IEEE 802.11 medium access control layer (MAC) and physical layers (PHY). Compared to IEEE Std 802.11-2020 it enables absolute and relative position estimation with higher accuracy, and reduces wireless medium utilization and power consumption, is scalable to dense deployments, and includes security features.

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PDF Pages	PDF Title
1	Front Cover
2	Title page
4	Important Notices and Disclaimers Concerning IEEE Standards Documents
8	Participants
12	Introduction
13	Contents
19	Tables
21	Figures
25	1. Overview 1.3 Supplementary information on purpose
26	3. Definitions, acronyms, and abbreviations 3.2 Definitions specific to IEEE Std 802.11
27	3.4 Acronyms and abbreviations
28	4. General description 4.3 Components of the IEEE 802.11 architecture 4.3.19 Wireless network management 4.3.19.19 Fine timing measurement (FTM)
29	4.5 Overview of the services 4.5.4 Access control and data confidentiality services 4.5.4.2 Authentication
30	6. Layer management 6.3 MLME SAP interface 6.3.5 Authenticate 6.3.5.2 MLME-AUTHENTICATE.request 6.3.5.2.2 Semantics of the service primitive 6.3.5.3 MLME-AUTHENTICATE.confirm 6.3.5.3.2 Semantics of the service primitive
31	6.3.5.4 MLME-AUTHENTICATE.indication 6.3.5.4.2 Semantics of the service primitive
32	6.3.5.5 MLME-AUTHENTICATE.response 6.3.5.5.2 Semantics of the service primitive
33	6.3.56 Fine timing measurement (FTM) 6.3.56.1 General
35	6.3.56.2 MLME-FINETIMINGMSMTRQ.request 6.3.56.2.2 Semantics of the service primitive
36	6.3.56.3 MLME-FINETIMINGMSMTRQ.indication 6.3.56.3.2 Semantics of the service primitive 6.3.56.4 MLME-FINETIMINGMSMT.request 6.3.56.4.1 Function
37	6.3.56.4.2 Semantics of the service primitive
38	6.3.56.4.3 When generated 6.3.56.4.4 Effect of receipt
39	6.3.56.5 MLME-FINETIMINGMSMT.confirm 6.3.56.5.1 Function 6.3.56.5.2 Semantics of the service primitive
40	6.3.56.5.3 When generated 6.3.56.6 MLME-FINETIMINGMSMT.indication 6.3.56.6.2 Semantics of the service primitive
41	8. PHY service specification 8.3 Detailed PHY service specifications 8.3.4 Basic service and options 8.3.4.2 PHY SAP inter-(sub)layer service primitives 8.3.4.3 PHY SAP service primitives parameters
42	8.3.4.4 Vector descriptions 8.3.5 PHY SAP detailed service specification 8.3.5.14 PHY-RXEND.indication 8.3.5.14.2 Semantics of the service primitive 8.3.5.18 PHY-RXLTFSEQUENCE.request 8.3.5.18.1 Function 8.3.5.18.2 Semantics of the service primitive 8.3.5.18.3 When generated
43	8.3.5.18.4 Effect of receipt 8.3.5.19 PHY-RXTRNSEQUENCE.request 8.3.5.19.1 Function 8.3.5.19.2 Semantics of the service primitive 8.3.5.19.3 When generated 8.3.5.19.4 Effect of receipt
44	9. Frame formats 9.3 Format of individual frame types 9.3.1 Control frames 9.3.1.19 VHT/HE/Ranging NDP Announcement frame format
48	9.3.1.22 Trigger frame format 9.3.1.22.1 General
49	9.3.1.22.10 Ranging Trigger variant
50	9.3.1.22a Subvariants of Ranging Trigger variant 9.3.1.22a.1 Poll subvariant
51	9.3.1.22a.2 Sounding subvariant 9.3.1.22a.3 Secure sounding subvariant
52	9.3.1.22a.4 Report subvariant 9.3.1.22a.5 Passive sounding subvariant 9.3.3 (PV0) Management frames 9.3.3.2 Beacon frame format
53	9.3.3.11 Authentication frame format
54	9.4 Management and Extension frame body components 9.4.1 Fields that are not elements 9.4.1.1 Authentication Algorithm Number field 9.4.1.9 Status Code field
55	9.4.1.11 Action field
56	9.4.2 Elements 9.4.2.1 General
57	9.4.2.20 Measurement Request element 9.4.2.20.1 General 9.4.2.21 Measurement Report element 9.4.2.21.10 LCI report (Location configuration information report)
60	9.4.2.24 RSNE 9.4.2.24.3 AKM suites 9.4.2.26 Extended Capabilities element
61	9.4.2.36 Neighbor Report element
62	9.4.2.118 MIC element 9.4.2.127 DMG Capabilities element 9.4.2.127.1 General 9.4.2.127.10 DMG Direction Measurement Capabilities field
63	9.4.2.127.11 DMG Fine Timing and Range Measurement Capability Information field
64	9.4.2.167 Fine Timing Measurement FTM Parameters element
68	9.4.2.187 FILS Wrapped Data element
69	9.4.2.241 RSN Extension element (RSNXE)
70	9.4.2.265 EDMG Capabilities element 9.4.2.265.2 Beamforming Capability subelement
71	9.4.2.296 ISTA Availability Window element 9.4.2.297 RSTA Availability Window element
73	9.4.2.298 Ranging Parameters element
80	9.4.2.299 Secure HE-LTF Parameters element
81	9.4.2.300 Direction Measurement Results element
82	9.4.2.301 Multiple Best AWV ID element
83	9.4.2.302 Multiple AOD Feedback element
84	9.4.2.303 PASN Parameters element
85	9.4.2.304 ISTA Passive TB Ranging Measurement Report element
87	9.4.2.305 RSTA Passive TB Ranging Measurement Report element
88	9.4.2.306 Passive TB Ranging LCI Table element
89	9.4.2.307 LOS Likelihood element
90	9.6 Action frame format details 9.6.6 Radio Measurement action details 9.6.6.6 Neighbor Report Request frame format 9.6.7 Public Action details 9.6.7.1 Public Action frames
91	9.6.7.32 Fine Timing Measurement FTM Request frame format
92	9.6.7.33 Fine Timing Measurement (FTM) frame format
95	9.6.7.49 Location Measurement Report (LMR) frame format
97	9.6.7.50 ISTA Passive TB Ranging Measurement Report frame format 9.6.7.51 Primary RSTA Broadcast Passive TB Ranging Measurement Report frame format
98	9.6.7.52 Secondary RSTA Broadcast Passive TB Ranging Measurement Report frame format
99	9.6.34 Protected Fine Timing frame details 9.6.34.1 Protected Fine Timing Action field
100	10. MAC sublayer functional description 10.3 DCF 10.3.2 Procedures common to the DCF and EDCAF 10.3.2.14 Duplicate detection and recovery 10.3.2.14.2 Transmitter requirements
101	10.3.2.14.3 Receiver requirements 10.12 A-MPDU operation 10.12.3 Minimum MPDU start spacing rules 10.23 HCF 10.23.2 HCF contention based channel access (EDCA) 10.23.2.8 Multiple frame transmission in an EDCA TXOP
102	10.42 DMG beamforming 10.42.10 EDMG beamforming 10.42.10.6 First path beamforming training
104	11. MLME 11.3 STA authentication and association 11.3.1 State variables 11.3.2 State transition diagram for nonmesh STAs
105	11.3.3 Frame filtering based on STA state
106	11.3.4 Authentication and deauthentication 11.3.4.1 General 11.3.4.2 Authentication—originating STA 11.3.4.3 Authentication—destination STA
107	11.3.4.4 Deauthentication—originating STA 11.3.4.5 Deauthentication—destination STA 11.3.5 Association, reassociation, and disassociation 11.3.5.1 General
108	11.3.5.2 Non-AP and non-PCP STA association initiation procedures 11.3.5.3 AP or PCP association receipt procedures 11.3.5.4 Non-AP and non-PCP STA reassociation initiation procedures
109	11.3.5.5 AP or PCP reassociation receipt procedures 11.3.5.6 Non-AP and non-PCP STA disassociation initiation procedures 11.3.5.8 AP or PCP disassociation initiation procedure 11.10 Radio measurement procedures 11.10.10 Usage of the neighbor report 11.10.10.2 Requesting a neighbor report 11.10.10.3 Responding to a neighbor report request
110	11.13 SA Query procedures 11.21 Wireless network management procedures 11.21.6 Fine timing measurement (FTM) procedure 11.21.6.1 OverviewGeneral 11.21.6.1.1 EDCA based Ranging and TB ranging overview
111	11.21.6.1.2 Non-TB ranging overview
112	11.21.6.1.3 Passive TB ranging overview
114	11.21.6.2 FTM capabilities
116	11.21.6.3 Fine timing measurement FTM procedure negotiation 11.21.6.3.1 General
117	11.21.6.3.2 Negotiation for EDCA based ranging measurement exchange
119	11.21.6.3.3 Negotiation for TB and non-TB ranging measurement exchange
123	11.21.6.3.4 Negotiation for secure HE-LTF in the TB and non-TB ranging measurement exchange
125	11.21.6.3.5 Capability negotiation for EDCA based ranging with the Format And Bandwidth field set to value in range 31–43
126	11.21.6.3.6 Negotiation for secure EDMG TRN in EDCA based ranging measurement 11.21.6.3.7 Direction measurement negotiation for DMG STAs
127	11.21.6.3.8 LOS assessment negotiation for EDMG STAs 11.21.6.3.9 Passive TB ranging measurement negotiation
128	11.21.6.4 Measurement exchange 11.21.6.4.1 FTM measurement exchange overview 11.21.6.4.2 EDCA based ranging measurement exchange 11.21.6.4.2.1 Common behavior for EDCA based ranging measurement exchange
134	11.21.6.4.2.2 DMG general measurement exchange
135	11.21.6.4.2.3 DMG/EDMG AOA/AOD measurement exchange
136	11.21.6.4.2.4 DMG AOD feedback exchange after an FTM exchange 11.21.6.4.2.5 DMG LOS assessment for EDCA based ranging measurement exchange
137	11.21.6.4.2.6 DMG first path AWV for EDCA based ranging measurement exchange 11.21.6.4.2.7 DMG secure measurement exchange for EDMG STAs
139	11.21.6.4.3 TB ranging measurement exchange 11.21.6.4.3.1 General
141	11.21.6.4.3.2 Polling phase of TB ranging
142	11.21.6.4.3.3 Measurement Sounding phase of TB ranging
146	11.21.6.4.3.4 Reporting phase of TB ranging measurement
148	11.21.6.4.4 Non-TB ranging measurement exchange 11.21.6.4.4.1 General 11.21.6.4.4.2 Measurement sounding phase of non-TB ranging
151	11.21.6.4.4.3 Non-TB ranging measurement reporting phase
153	11.21.6.4.5 Secure HE-LTF in the TB and non-TB ranging measurement exchange protocol 11.21.6.4.5.1 General 11.21.6.4.5.2 TB ranging measurement exchange with secure HE-LTF
158	11.21.6.4.5.3 Non-TB ranging measurement exchange with secure HE-LTF
162	11.21.6.4.5.4 Overview of secure HE-LTF octet stream generation
163	11.21.6.4.5.5 Secure HE-LTF octet stream generation on an ISTA
164	11.21.6.4.5.6 Secure HE-LTF input octet stream generation on an RSTA
166	11.21.6.4.6 Transmission of a ranging NDP
169	11.21.6.4.7 Time of arrival estimation using phase shift feedback
170	11.21.6.4.8 Measurement exchange in passive TB ranging mode 11.21.6.4.8.1 General 11.21.6.4.8.2 Polling phase of passive TB ranging 11.21.6.4.8.3 Passive TB ranging measurement sounding phase
173	11.21.6.4.8.4 Passive TB ranging Measurement Reporting phase
176	11.21.6.4.9 Passive TB ranging differential time-of-flight calculations using phase shift TOA timestamps
177	11.21.6.5 Fine timing measurement FTM parameter modification 11.21.6.5.1 Availability window parameter modification
178	11.21.6.6 Fine timing measurement FTM session termination 11.21.6.6.1 EDCA based ranging session termination 11.21.6.6.2 TB ranging and non-TB ranging session termination
179	11.21.6.7 LCI and Location Civic retrieval using FTM procedure
180	11.24 Quality-of-service Management frame (QMF) 11.24.1 General 11.24.1.2 Default QMF policy
181	12. Security 12.2 Framework 12.2.4 RSNA establishment 12.2.7 Requirements for management frame protection 12.2.11 EDMG secure ranging sequences
182	12.5 RSNA confidentiality and integrity protocols 12.5.3 CTR with CBC-MAC protocol (CCMP) 12.5.3.2 CCMP MPDU format
183	12.5.3.4 CCMP decapsulation 12.5.3.4.4 PN and replay detection
184	12.5.5 GCM protocol (GCMP) 12.5.5.2 GCMP MPDU format 12.5.5.4 GCMP decapsulation 12.5.5.4.4 PN and replay detection
185	12.6 RSNA security association management 12.6.1 Security associations 12.6.1.1 Security association definitions 12.6.1.1.1 General 12.6.1.1.6 PTKSA
186	12.6.7 RSNA policy selection in an MBSS 12.6.10 RSNA authentication in an infrastructure BSS 12.6.10.1 General 12.6.19 Protection of robust Management frames
187	12.7 Keys and key distribution 12.7.1 Key hierarchy 12.7.1.3 Pairwise key hierarchy
189	12.7.1.6 FT key hierarchy 12.7.1.6.5 PTK 12.7.3 EAPOL-Key frame construction and processing
190	12.11 Authentication for FILS 12.11.2 FILS authentication protocol 12.11.2.5 Key establishment with FILS authentication 12.11.2.5.3 PTKSA Key derivation with FILS authentication
191	12.13 Preassociation security negotiation 12.13.1 General 12.13.2 Discovery of a PASN capable AP
192	12.13.3 Key establishment with PASN authentication 12.13.3.1 Overview
193	12.13.3.2 PASN frame construction and processing
197	12.13.4 PASN authentication with FILS shared key
198	12.13.5 PASN authentication with SAE
199	12.13.6 PASN authentication with FT 12.13.7 PTKSA derivation with PASN authentication
200	12.13.8 MIC computation with PASN authentication 12.13.8.1 MIC computation for PASN second frame 12.13.8.2 MIC computation for PASN third frame
201	12.13.9 Comeback cookies
202	26. High-efficiency (HE) MAC specification 26.5 MU operation 26.5.2 UL MU operation 26.5.2.2 Rules for soliciting UL MU frames 26.5.2.2.4 Allowed settings of the Trigger frame fields and TRS Control subfield 26.5.2.5 UL MU CS mechanism 26.12 HE PPDU post-FEC padding and packet extension
203	26.15 PPDU format, BW, MCS, NSS, and DCM selection rules 26.15.2 PPDU format selection 26.17 HE BSS operation 26.17.2 HE BSS operation in the 6 GHz band 26.17.2.1 General
204	27. High-efficiency (HE) PHY specification 27.1 Introduction 27.1.1 Introduction to the HE PHY
205	27.2 HE PHY service interface 27.2.2 TXVECTOR and RXVECTOR parameters
207	27.2.3a LTFVECTOR parameters
208	27.3 HE PHY 27.3.4 HE PPDU formats 27.3.11 HE preamble 27.3.11.1 Introduction 27.3.18a HE Ranging NDP and HE TB Ranging NDP 27.3.18a.1 HE Ranging NDP
211	27.3.18a.2 HE TB Ranging NDP
212	27.3.18b HE-LTF field using secure HE-LTF 27.3.18b.1 Introduction
213	27.3.18b.2 Generation of a randomized secure HE-LTF sequence 27.3.18b.2.1 Randomized LTF sequence for 20 MHz secure NDP
214	27.3.18b.2.2 Randomized LTF sequence for 40 MHz secure NDP
215	27.3.18b.2.3 Randomized LTF sequence for 80 MHz secure NDP
217	27.3.18b.2.4 Randomized LTF sequence for the 160 MHz secure NDP and for the 80+80 MHz secure NDP
219	27.3.18b.3 Pseudorandom and deterministic per spatial stream phase rotations
220	27.3.18b.4 Frequency domain windowing in HE-LTF field using secure HE-LTF
222	27.3.18b.5 Mathematical description of HE-LTF field using secure HE-LTF
223	27.3.18b.6 Construction of secure HE-LTF symbols
224	27.3.19 Transmit specification 27.3.19.5 Time of departure accuracy 27.3.21 HE transmit procedure
225	27.3.22 HE receive procedure 27.4 HE PLME 27.4.3 TXTIME and PSDU_LENGTH calculation
227	28. Enhanced directional multi-gigabit (EDMG) PHY specification 28.1 Introduction 28.1.1 Introduction to EDMG PHY 28.2 EDMG PHY service interface 28.2.2 TXVECTOR and RXVECTOR parameters
228	28.3 Common parameters 28.3.2 EDMG PPDU format 28.3.2.1 General 28.3.3 EDMG preamble 28.3.3.3 EDMG portion of EDMG format preamble 28.3.3.3.2 EDMG-Header-A definition 28.3.3.3.2.3 Definition for EDMG SC mode and EDMG OFDM mode PPDUs
229	28.5 EDMG and non-EDMG SC mode 28.5.9 Data field 28.5.9.2 Symbol blocking and guard insertion 28.5.9.2.2 SU PPDU transmission 28.5.9.2.2.2 SU PPDU transmission over a 2.16 GHz or a 2.16+2.16 GHz channel with NSTS = 1 28.9 EDMG beamforming 28.9.3 EDMG secure ranging PPDU 28.9.3.1 General 28.9.3.2 EDMG secure ranging PPDU structure 28.9.3.3 EDMG secure ranging PPDU header fields 28.9.3.4 EDMG secure ranging PPDU duration 28.9.3.5 TRN field definition with Secure TRN subfields
230	28.9.3.5.1 TRN field structure with Secure TRN subfields 28.9.3.6 Secure TRN subfield definition for EDMG secure ranging PPDU
231	28.9.3.7 Transmission of an EDMG secure ranging PPDU
232	Annex A (informative) Bibliography
233	Annex B (normative) Protocol Implementation Conformance Statement (PICS) proforma B.4 PICS proforma—IEEE Std 802.11-2020 B.4.3 IUT configuration B.4.4 MAC protocol
235	B.4.37 Enhanced positioning (Ranging) features
238	Annex C (normative) ASN.1 encoding of the MAC and PHY MIB C.3 MIB detail
243	Annex J (informative) RSNA reference implementations and test vectors J.12 PASN Test Vectors J.13 KDK Test Vectors when PASN authentication is not used
244	J.14 LTF Sequence Generation Test Vectors
245	Annex AD (informative) Phase shift feedback calculation
246	Annex AE (informative) SIR-based attack detection
248	Back Cover

Additional information

Standard Title	IEEE Standard for Information Technology–Telecommunications and Information Exchange between Systems Local and Metropolitan Area Networks–Specific Requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications Amendment 4: Enhancements for Positioning (Published)
Published Code	IEEE
Publication Date	2022

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