HW067: Extending Your Wireless Range with Wi-Fi HaLow

Today, we explore Wi-Fi HaLow, also known as 802.11ah, a technology designed to extend the range of wireless communication beyond what traditional Wi-Fi offers. This advancement is particularly significant for applications requiring long-range connectivity, such as in industrial settings, smart cities, and IoT devices. To understand the potential of Wi-Fi HaLow, we spoke with David Rice, Principle Field Application Engineer, and Arien Judge, Open Source Platforms Manager, both from Morse Micro, a company that specializes in creating chips for energy-efficient wireless communication in the sub-1 GHz band.

Wi-Fi HaLow was standardized by the Wi-Fi Alliance in 2015 as a low-power, wide-area wireless technology. It operates in the unlicensed sub-1 GHz band, which is less congested than the traditional 2.4 GHz and 5 GHz bands commonly used by Wi-Fi. This shift allows for longer range and better penetration through walls and other obstacles, making it ideal for applications like smart metering, environmental monitoring, and industrial automation.

David Rice explained that the sub-1 GHz band offers several advantages over higher frequency bands. "The lower frequency allows for better propagation through buildings and other structures, which is crucial for applications where line-of-sight communication isn't always possible," he said. Additionally, Rice noted that the lower frequency bands are less susceptible to interference, which can be a significant issue in densely populated urban areas.

Arien Judge emphasized the energy efficiency of Wi-Fi HaLow. "Devices operating in the sub-1 GHz band can last much longer on a single charge compared to their counterparts in higher frequency bands," she explained. This is particularly important for battery-operated IoT devices, which often rely on long battery life to function effectively.

Morse Micro's chips are designed to take full advantage of the sub-1 GHz band's capabilities. The company's technology enables devices to communicate over longer distances while consuming significantly less power. This makes Wi-Fi HaLow a compelling option for a wide range of applications, from industrial automation to smart city infrastructure.

One of the key challenges in deploying Wi-Fi HaLow is the need for compatible hardware and software. While the standard has been around for several years, widespread adoption has been limited. Morse Micro is working to address this by collaborating with manufacturers to integrate their chips into a variety of devices, from routers to sensors.

In conclusion, Wi-Fi HaLow presents a promising solution for extending wireless range and improving energy efficiency in a variety of applications. As the technology continues to evolve and gain traction, it has the potential to revolutionize the way we connect devices in both indoor and outdoor environments. With the expertise of companies like Morse Micro, the future of long-range wireless communication looks bright.