In the field of the Internet of Things, there are various communication technologies at the same time. Divided by the dimension of transmission distance, in the field of local area wireless network, there are BLE, Wi-Fi, ZigBee, etc., which are widely used in home, enterprise and other scenarios. For wide-area wireless networks, there are LoRa, NB-IoT, etc., which are specially used for low-rate, low-power, and wide-coverage IoT services. NB-IOT/Zigbee/Lora comparison WiFi is ubiquitous in life, but we know very little about NB-IOT, Zigbee, and Lora. Sino-Inst compares the three wireless networking solutions from five aspects to help you understand these three technologies. Transmission distance comparison NB-IoT: Long-distance, up to ten kilometers, generally more than 10KM; NB-IoT technology improves the power spectral density, realizes wide-area coverage, and effectively solves the problem that existing wireless signals are difficult to cover. LoRa: Long distance, up to ten kilometers, 1~2 kilometers in cities, and 20 kilometers in suburbs; ZigBee: short distance, 10 meters to 100 meters level; Single-network access node capacity NB-IOT: about 200,000. Compared with traditional 2G, 3G and 4G, NB-IoT has a 50-100 times increase in uplink capacity; LoRa: about 60,000, which is actually related to the number of gateway channels, node packet sending frequency, data packet size, etc. Generally, there are 500 to 5000; ZigBee: more than 60,000 in theory, 200-500 in general Battery life NB-IOT: theoretical about 10 years / AA battery, no need to charge; LoRa: Theoretically about 10 years/AA battery; ZigBee: Theoretically about 2 years/AA battery; Cost NB-IOT: The cost of the module is less than 5 US dollars, and the future target is reduced to 1 US dollar. The low cost and low power consumption make NB-IOT more cost-effective and wider application range than other types of IoT; LoRa: The module is about $5; ZigBee: The module is about 1~2 US dollars; Transmission speed NB-IOT: theoretical 160kbp ~ 250Kbps, generally less than 100kbps in practice, limited by low-speed communication interface UART; LoRa: 0.3~50kbps; ZigBee: theoretical 250kps, practically less than 100kbps, limited low-speed communication interface UART;