As the number of IoT (Internet of Things) devices continues to increase, the global demand for stable, long-range connections is also growing rapidly. According to IoT Analytics, there will be more than 27 billion IoT devices worldwide by 2025. In this context, Wi-Fi HaLow is gradually becoming a key technology to solve IoT connectivity problems. Although Wi-Fi 7 has attracted a lot of attention as the latest and fastest Wi-Fi standard, Wi-Fi HaLow has also occupied a place in the IoT ecosystem with its advantages of low power consumption, long distance and device support.
What is Wi-Fi HaLow?
Wi-Fi HaLow is based on the IEEE 802.11ah protocol and is specifically targeted at low-power, long-range IoT needs. Unlike traditional Wi-Fi 5, 6, and 6E, Wi-Fi HaLow operates in the frequency band below 1GHz, usually the 900 MHz band. This enables it to provide reliable wireless connections over longer distances, with a coverage range of up to 3 km or more (a recent test showed that Wi-Fi HaLow achieved a transmission distance of about 3 km (about 1.86 miles) in a beach environment.), especially in line-of-sight scenarios. In addition, due to its use of lower frequency bands, Wi-Fi HaLow is better able to penetrate obstacles (such as walls, metal structures, etc.), making it ideal for scenarios that require wide coverage, such as smart homes, smart cities, and industrial automation.
Unique advantages of Wi-Fi HaLow
1. Ultra-long distance and penetration
The low-frequency signal of Wi-Fi HaLow has strong penetration and long-distance coverage. When operating in the 900 MHz band, HaLow can stably transmit data at a longer distance while penetrating dense materials such as walls and metal. In contrast, traditional 2.4 GHz and 5 GHz Wi-Fi signals are powerless when faced with obstacles. Wi-Fi HaLow provides superior performance for IoT devices with a wide coverage, especially in smart agriculture or industrial IoT scenarios.
2. Low power consumption supports long-term operation of IoT devices
Wi-Fi HaLow supports advanced power management features such as Target Wake Time (TWT) and Restricted Access Window (RAW). These features allow devices to enter low-power mode when idle and wake up only when needed, greatly extending the battery life of battery-powered devices. This is especially important for battery-powered devices such as sensors and security cameras, which need to operate for a long time and not frequently replace batteries.
3. Support large-scale device connections
Wi-Fi HaLow is designed to allow up to 8191 devices to be connected, far more than most IoT protocols. This advantage makes it an ideal choice for large-scale IoT projects such as smart cities or industrial parks. In contrast, other IoT protocols such as Z-Wave or Thread have much smaller device capacities.