The transmission speed and distance of wireless Wi-Fi are quite remarkable. Currently, Wi-Fi is the most widely used wireless communication technology, with a transmission distance of 100 to 300 meters and a considerable speed. It is based on the IEEE 802.11 standard and has undergone several generations of development, with speeds continuously soaring. For instance, the first generation had a rate of only 2 Mbps, while the sixth generation, 802.11ax, can reach up to 2.4 Gbps in the 2.4/5 GHz bands.
In comparison, Zigbee has a transmission distance of 50 to 300 meters but only a rate of 250 kbps; Bluetooth has a transmission distance of 2 to 30 meters with a rate of 1 Mbps. Considering both transmission distance and speed, Wi-Fi has a clear advantage. However, each technology has its shortcomings, and none can fully meet all the needs of smart home applications.