LoRa is a wireless communication technology that is a type of LPWAN (Low-Power Wide-Area Network) and is used in many smart devices. Sure, Wi-Fi reigns supreme for browsing the web, and Bluetooth is great for connecting headphones and wearables, but a smart home is a low-power, always-awake system that can connect from one end of your home to the other. The three main standards used in intelligent control categories (switches, infrared, curtain motors, induction switches, etc.), security configuration categories, and automation controllers are ZigBee, Z-Wave, and LoRa.
Where does LoRa come from?
LoRa is a low-power local area network wireless standard created by semtech. Low-power consumption generally makes it difficult to cover long distances, and long-distance power consumption is generally high. If you want a horse to not eat grass, it has to run far. It seems difficult to do. The name of LoRa is Long Range Radio. Its biggest feature is that it can propagate farther than other wireless methods under the same power consumption conditions, achieving the unity of low power consumption and long distance. The communication distance is 3-5 times longer than that of traditional wireless radio frequency.
What are the characteristics of LoRa?
Transmission distance: up to 2-5 Km in towns and 15 Km in suburbs.
Working frequency: ISM frequency band includes 433, 868, 915 MH, etc.
Standard: IEEE 802.15.4g.
Modulation method: Based on spread spectrum technology, a variant of linear modulation spread spectrum (CSS), with forward error correction (FEC) capability, semtech company's proprietary patented technology.
Capacity: A LoRa gateway can connect thousands of LoRa nodes.
Battery life: up to 10 years.
Security: AES128 encryption.
Transmission rate: several hundred to tens of Kbps. The lower the rate, the longer the transmission distance. It's like a person picking things. If you pick more, you won't go far, but if you pick less, you can go farther.
How does LoRa work?
LoRa is a communication technology used to connect smart home devices to collect, organize and feedback data. It can be found in smart switches, infrared, temperature and humidity sensors and other devices. Compared with wifi and Bluetooth, it consumes much less power, but its communication distance can be longer.
LoRa uses a star structure to achieve long-distance connection stability and ensure node battery life.
This star network structure can ensure that communication delays between smart homes are reduced and provide a better experience.
The importance of LoRa