ISO/IEC 5021-1:2023

INTERNATIONAL ISO/IEC
STANDARD 5021-1
First edition
2023-07
Telecommunications and information
exchange between systems — Wireless
LAN access control —
Part 1:
Networking architecture
Reference number
© ISO/IEC 2023
© ISO/IEC 2023
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© ISO/IEC 2023 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 2
5 Network architecture and operating mechanism . 2
5.1 Network architecture . 2
5.2 Operating mechanism . 3
6 First association of an AP with a cloud AC . 4
6.1 Procedure . 4
6.2 Cloud AC selection . 4
6.3 AP association . 5
7 CADP-based cloud AC switchover . 6
7.1 Cloud AC switchover for optimization or replacement . 6
7.2 Active/standby cloud AC switchover . 7
8 CADP hot backup . .8
Bibliography .10
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© ISO/IEC 2023 – All rights reserved

Foreword
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Subcommittee SC 6, Telecommunications and information exchange between systems.
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© ISO/IEC 2023 – All rights reserved

INTERNATIONAL STANDARD ISO/IEC 5021-1:2023(E)
Telecommunications and information exchange between
systems — Wireless LAN access control —
Part 1:
Networking architecture
1 Scope
This document specifies a cloud AC based wireless local area network (WLAN) networking architecture,
defines the cloud access controller dispatch platform (CADP) operating mechanism and the interaction
between the network elements such as CADPs, access points (APs), cloud access controllers (ACs) and
the WLAN network management system (NMS), and specifies the main functional requirements of each
network element.
This document applies to public WLAN networking scenarios.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO/IEC/IEEE 8802-11, Telecommunications and information exchange between systems — Specific
requirements for local and metropolitan area networks — Part 11: Wireless LAN medium access control
(MAC) and physical layer (PHY) specifications
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC/IEEE 8802-11 and the
following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
access controller
AC
network entity that provides AP access to the network infrastructure in the data plane, control plane,
management plane, or a combination therein
[SOURCE: IETF RFC 5415:2009, 1.4, modified — "wireless termination point" has been replaced with
"access point".]
3.2
cloud access controller
cloud AC
access controller entity deployed in the core network, which is coordinated and implemented by cloud
access controller dispatch platform (3.5) for contr
...