ISO/IEC 21228:2019 PDF

Name: ISO/IEC 21228:2019 — Information technology — Telecommunications and information exchange between systems — Coexistence mechanism for broadband powerline communication technologies
SKU: ISO/IEC 21228:2019
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Information technology — Telecommunications and information exchange between systems — Coexistence mechanism for broadband powerline communication technologies

Название (английский):

ISO/IEC 21228:2019

Information technology — Telecommunications and information exchange between systems — Coexistence mechanism for broadband powerline communication technologies

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 6
Дата публикации:: 24 мая 2019 г.
Издание:: ISO/IEC IS 21228 edition 1 version 1
ICS:: 35.110

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Описание (английский):

This document specifies the coexistence mechanism for various broadband powerline communication systems. By using the coexistence mechanism, possible harmful interference between different standard-based high-speed powerline communication systems can be avoided.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO/IEC 21228:2019 defines a coexistence mechanism for broadband powerline communication (PLC) technologies. The standard specifies a coexistence protocol (CP) that enables multiple, non‑interoperable high‑speed PLC systems to share the same powerline medium without causing harmful interference. It extends existing inter-system protocols to accommodate another in‑home system while preserving backward compatibility with IEEE Std 1901 ISP behavior.

Key topics and technical requirements

Coexistence protocol (CP): Shares time‑domain and frequency‑domain resources between different broadband PLC systems. The CP is largely aligned with the IEEE 1901 inter‑system protocol (ISP) and ITU‑T G.9972 coexistence concepts.

Resource sharing methods: Two primary multiplexing strategies are used:

Time Domain Multiplex (TDM) - extended TDM resource allocation to support up to four non‑interoperable systems on the same powerline.
Frequency Domain Multiplex (FDM) - alternative method for splitting spectral resources among systems.

Extended TDM schemes:

Utilizing TDM resources of an absent in‑home system (IH-A assumes the allocation of the first absent system in a fixed order IH‑W, IH‑O, IH‑G).
Utilizing TDM resources of an access system when no access or absent in‑home systems exist.

Compatibility and detection rules:

IH‑A transmits ISP signals with a different periodicity (8×T) versus standard systems (4×T) so it can detect newly connected systems and relinquish resources accordingly.
IH‑A uses phase vectors corresponding to the first absent in‑home system as specified in IEEE 1901 tables for synchronization.

Applications and practical value

Prevents harmful interference in environments where multiple broadband PLC standards coexist (e.g., mixed deployments of IEEE 1901, ITU‑T G.hn, ISO/IEC 12139‑1).

Enables reliable home networking and in‑premises broadband services over existing powerline infrastructure when devices from different standards operate nearby.

Useful for system designers and implementers who need to ensure interoperability at the coexistence layer without changing underlying PHY/MAC implementations.

Who should use this standard

PLC equipment manufacturers implementing multi‑standard coexistence.

Network architects and integrators deploying in‑home or access PLC solutions.

Standards developers and test laboratories validating coexistence behavior.

Regulators and certification bodies assessing coexistence mitigation in shared powerline environments.

Related standards

IEEE Std 1901-2010 (ISP and TDM/FDM coexistence)

ISO/IEC 12139‑1 (High‑speed PLC MAC/PHY)

ITU‑T G.9960 / G.9961 (G.hn family)

ITU‑T G.9972:2010 (Coexistence mechanism for wireline home networking)

Keywords: ISO/IEC 21228:2019, coexistence mechanism, broadband powerline communication, PLC coexistence, time domain multiplex, frequency domain multiplex, IEEE 1901, G.hn, ISP, CP.

ISO/IEC 21228:2019 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and practical value

Who should use this standard

Related standards

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