ISO/IEC/IEEE DIS 32857

Telecommunications and information exchange between systems — Wireless Smart Utility Network Field Area Network (FAN)

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General Information

• Status: Not Published
• ICS: 33.040.40 - Data communication networks
• Technical Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Drafting Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Current Stage: 4099 - Full report circulated: DIS approved for registration as FDIS
• Start Date: 16-Feb-2024
• Completion Date: 13-Sep-2025

Standards Content (Sample)

FINAL DRAFT
International
Standard
ISO/IEC/IEEE
FDIS
ISO/IEC JTC 1/SC 6
Telecommunications and
Secretariat: KATS
information exchange between
Voting begins on:
systems — Wireless Smart Utility
2025-09-04
Network Field Area Network (FAN)
Voting terminates on:
2026-01-22
This document has not been edited by the ISO Central Secretariat.
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
FAST TRACK PROCEDURE
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/IEC/IEEE FDIS 32857:2025(en) © IEEE 2025

FINAL DRAFT
ISO/IEC/IEEE FDIS 32857:2025(en)
International
Standard
ISO/IEC/IEEE
FDIS
ISO/IEC JTC 1/SC 6
Telecommunications and
Secretariat: KATS
information exchange between
Voting begins on:
systems — Wireless Smart Utility
Network Field Area Network (FAN)
Voting terminates on:
This document has not been edited by the ISO Central Secretariat.
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPORTING D OCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
© IEEE 2025
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
FAST TRACK PROCEDURE
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
the internet or an intranet, without prior written permission. Permission can be requested from IEEE at the address below.
TO BECOME STAND ARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Institute of Electrical and Electronics Engineers, Inc
3 Park Avenue, New York
NY 10016-5997, USA
Email: [e-mail]
Website: www.ieee.org
Published in Switzerland Reference number
ISO/IEC/IEEE FDIS 32857:2025(en)
© IEEE 2021
© IEEE 2025 – All rights reserved
ii
ISO/IEC/IEEE FDIS 32857:2025(en)

Field Area Network Working Group
Field Area Network Technical Profile Specification

This document is provided under the terms of the agreement (18 Nov 2019) between Wi-SUN Alliance and IEEE. The
contents of this document are Copyright © Wi-SUN Alliance ™.
© IEEE 2021 – All rights reserved
iii
ISO/IEC/IEEE FDIS 32857:2025(en)
Table of Contents
1 INTRODUCTION . 1
Scope . 1
Requirements Language . 1
Structure of This Document . 1
Acknowledgements . 1
2 REFERENCES . 3
Wi-SUN . 3
IEEE . 4
ANSI/TIA . 4
IETF . 4
3 DEFINITIONS AND ACRONYMS . 6
Definitions . 6
Acronyms . 6
4 TECHNICAL REQUIREMENTS . 9
General . 9
Reliability Targets . 9
Adjacent Node Time Synchronization . 9
PHY Layer . 9
4.4.1 Regional Requirements . 9
4.4.2 Data Rates . 9
Data Link Layer . 9
4.5.1 Frequency Hopping . 9
4.5.2 Routing and Forwarding . 10
Network Layer . 10
Transport Layer . 10
Security . 10
5 ARCHITECTURE .12
Overview . 12
© IEEE 2021 – All rights reserved
iv
ISO/IEC/IEEE FDIS 32857:2025(en)
Upper Layer Considerations . 14
Transport Service. 14
5.3.1 General Principles . 14
5.3.2 Node Behavior . 14
Network Service . 14
5.4.1 General Principles . 14
5.4.2 Node Behavior . 15
Data Link Service . 15
5.5.1 General Principles . 15
5.5.2 Node Behavior . 15
PHY Service . 21
5.6.1 General Principles . 21
5.6.2 Node Behavior . 22
Security . 22
6 SPECIFICATION .23
Transport Layer . 23
6.1.1 Operation . 23
Network Layer . 23
6.2.1 Constants . 23
6.2.2 Data Structures. . 23
6.2.3 Operation . 24
Data Link Layer . 33
6.3.1 Constants . 33
6.3.2 Data Structures . 37
6.3.3 LLC Operation . 58
6.3.4 MAC Operation . 61
6.3.5 Service Access Points . 75
PHY Layer . 80
6.4.1 Operating Modes . 81
6.4.2 Preamble Length . 81
6.4.3 Radio Specifications . 81
Security . 81
6.5.1 Public Key Infrastructure . 82
6.5.2 FAN Access Control and Group Key Placement . 83
6.5.3 Node to Node Pairwise (N2NP) Authentication and Key Generation . 92
6.5.4 Frame Security . 125
6.5.5 Node Hardening . 129
6.5.6 State Maintenance Through Power Cycling . 129
7 APPENDIX A – TR51 CHANNEL FUNCTION .130
Random Number Generation . 130
Channel Table Calculation . 130
© IEEE 2021 – All rights reserved
v
ISO/IEC/IEEE FDIS 32857:2025(en)
Calculating the First Element and Step Size . 132
Computation of Hopping Sequence Channel Table. . 133
8 APPENDIX B - UNICAST FRAME EXCHANGE EXAMPLES .135
Directed Frame Exchange: .
...