G.hn: Powering the Industrial IoT Revolution for Cost‑Effective, Reliable Connectivity

Livia Rosu of HomeGrid Forum

We live in an increasingly digital world, where technology keeps us connected across all facets of life. According to DataProt, there were more than 10 billion active Internet of Things (IoT) devices in 2021, a figure projected to exceed 25 billion by 2030.

While early IoT deployments focused on consumer markets, the technology is now unlocking transformative opportunities in industrial settings. Sensors, automated and remotely‑controlled equipment generate vast amounts of data that, when analyzed, can overhaul operations, boost profits, and enhance productivity, explains Livia Rosu, president of HomeGrid Forum.

As Industrial IoT (IIoT) devices multiply, network infrastructure must handle high‑speed communication demands swiftly and efficiently. G.hn technology plays a pivotal role by delivering a secure, robust backbone that ensures optimal efficiency, security, scalability, and safety. In the Industry 4.0 era, G.hn is essential for sustaining IIoT growth.

The Role of G.hn

G.hn operates across four media types—powerline, coaxial cable, telephone cable, and plastic optical fibre—enabling data and power to travel on a single line. This simplifies wiring architecture, reuses existing cabling, and cuts installation, maintenance, and material costs. For companies pressured to maximize ROI, G.hn offers an exceptionally cost‑effective solution.

Beyond cost, G.hn delivers superior power‑line noise immunity compared to other connectivity technologies. It bridges legacy systems—still prevalent in industrial environments—with modern IoT platforms, ensuring fast, reliable communication.

Advanced power‑line noise mitigation is built into G.hn, including PHY‑layer selective retransmission for instant impulse noise, and synchronous‑noise mitigation that applies adaptive subcarrier bit‑loading in the presence of power‑switching, chargers, and LED lighting.

The adaptive subcarrier bit‑loading algorithm and advanced LDPC error correction maximize spectrum efficiency in noisy channels. For industrial applications, low latency outweighs high bandwidth; thus, power‑line communications provide cost‑effective, end‑to‑end IP connectivity with simultaneous power distribution.

DIN‑rail G.hn solutions already optimize data transmission in control cabinets and fuse boxes. The widespread G.hn profiles also support coaxial cabling, offering resilience in harsh environments.

Enabling High‑Speed Connectivity

Low latency and reliable connectivity are critical for uninterrupted machine‑to‑machine operations. G.hn serves as essential time‑critical and safety‑critical infrastructure, with self‑healing capabilities that maintain mission‑critical communications.

G.hn’s rapid installation leverages existing wiring to deliver the low‑latency connectivity industrial applications demand. Its topologies support up to 250 nodes in multi‑hop, point‑to‑multipoint (P2MP) configurations.

A G.hn software stack, featuring multi‑hop, low‑latency, and high‑throughput, is ideal for large‑scale, fast IIoT deployments—smart elevator control, metering, grids, parking, building automation, environmental sensors, video surveillance, and employee safety panels—thanks to real‑time, two‑way traffic handling and ample bandwidth.

Custom G.hn solutions for an IIoT Self‑Organised Network (SON) provide plug‑and‑play repeater selection, automated configuration, and distributed decision‑making, ensuring rapid installation, optimal path selection, and network self‑healing.

An IIoT Future with G.hn

Industrial environments already benefit from G.hn‑enabled IIoT, and its importance will grow as demand for high‑speed connectivity rises. HomeGrid Forum members are developing G.hn‑based industrial products that drive digital transformation across sectors. To fully harness IIoT’s potential, G.hn must simplify system integration and deliver robust, reliable performance for future‑proof applications.

The author is Livia Rosu, president of HomeGrid Forum.

About the author

Livia Rosu has just been appointed president of the HomeGrid Forum. Previously she chaired the marketing working group and served on the board of directors for six years. The Forum supports the deployment and innovation of G.hn, the world‑renowned Gigabit networking technology based on ITU‑T standards, providing a backbone for smart home connectivity and bandwidth‑intensive applications. Livia is a qualified Computer Science engineer (MSc, MBA) with over 18 years of experience in telecommunications business development, focused on standardising revolutionary technologies for next‑generation applications such as Li‑Fi, Smart Grids, and Smart Cities.