What is the real difference between NB-lot and LoRa?
1. Perception layer (information acquisition layer), that is, the use of various sensors and other equipment to obtain the information of objects anytime, anywhere;
Second, the network layer (information transmission layer), through the integration of various telecommunication networks and the Internet, the information of objects is transmitted accurately in real time;
3. The application layer (information processing layer) processes the information obtained by the perception layer to realize practical applications such as intelligent identification, positioning, tracking, monitoring and management.
Just like the smart fire protection system, the situation in the room is uploaded to the cloud through the network through smoke detectors and temperature and humidity sensors, and then communicated to the comprehensive early warning platform, so that the situation in the room can be monitored through the platform. Once the temperature and humidity are found to exceed normal range, or if smoke is detected, the platform will issue an early warning.
The NB-IoT and LoRa we are talking about today belong to the network layer and are used to transmit information, just like our 3G/4G and WIFI. The difference is that NB-IoT and LoRa are Low Power Wide Area Network (LPWAN), which is an IoT communication technology that can achieve low bandwidth, low power consumption, long distance, and a large number of connections.
From a technical point of view, LoRa is an ultra-long-distance wireless transmission scheme based on spread spectrum technology launched by Semtech in the United States. The main difference between the two is that the former is based on unlicensed frequency bands and the latter is based on licensed frequency bands.
LoRa works in the unlicensed frequency band of Sub-1G, and network equipment can be established without application. Relatively speaking, the network architecture is simple, and no additional communication fees are required in practical applications, and because it is an open frequency band, the practical application is very wide, but easy Interference from other devices in the same frequency band.
NB-IoT and cellular communications use licensed frequency bands provided by operators, so there is relatively less interference. Although a certain communication fee needs to be paid in practical applications, the signal service quality is better and the security is more guaranteed.
Generally speaking, the two have their own characteristics and application adaptability. There is no qualitative choice between the two in terms of technology, and there is no absolute difference between them.
In addition to the technical level, it is more about the competition of the industrial structure. LoRa is the technology of American Semtech company, and the core patents are mainly owned by foreign companies;
NB-IoT has more local advantages. It can be seen from the patent distribution map that it has an advantage in the number of patents. Since Chinese enterprises have more NB-IoT technology patents, my country is more inclined to develop NB-IoT from a policy perspective.
According to the NB-IoT construction plan released by the Ministry of Industry and Information Technology, more than 1.5 million NB-IoT base stations will be built in China by 2020, and the number of connections will exceed 600 million. Therefore, NB-IoT has a very friendly development environment in China.
Taken together, NB-IoT and LoRa are technically indistinguishable, depending on the usage scenario. But from a policy perspective, NB-IoT has more development opportunities.
The above is the NB-loT and LoRa that everyone has been arguing about, and there are other questions you want to know. Welcome to leave a message.