4G VS NB-IOT
The Internet of Things is one of the key words in the field of electronic communication in recent years. It is mainly researched on sending sensor data distributed in different places to the back of the server for big data analysis.
The characteristics of IoT communication are: the number of sensors is large but the amount of data is small, and the transmission frequency is low. It is very different from the data transmission of hundreds of megabytes/several gigabytes per hour that we watch videos online and play online games. Which method should I choose?
You can choose Beidou short message/iridium where there is no base station signal, and choose 4G or NB-IOT according to the amount of data and transmission frequency where there is a base station signal. It is also possible to combine Beidou short message and NB-IOT to realize communication in areas with and without base stations.
Major operators are currently converting GPRS base stations into NB-IOT base stations, so GPRS will gradually die out within a few years. In addition, although LORA communication claims to be open to the agreement, the chip is monopolized by French semtech company, and coupled with the inherent shortage of spectrum resources, it is difficult to develop in China. So GPRS and LORA are not mentioned here.
The following is the difference between 4G and NB-IOT:
NB-IOT has many advantages, but there are also man-made obstacles: originally data can be sent to the user's server through the NB base station, but the operator builds its own cloud platform (such as Telecom Cloud, China Unicom Cloud) ), the data must arrive at their cloud platform before being sent to the enterprise. In the era of big data, many companies want to control and mine data.
However, this will cause some large enterprises that need data confidentiality to worry about it, and the operator's cloud platform operation is very troublesome, and some small and medium-sized enterprises and individual enthusiasts are blocked. At present, only China Mobile does not have this restriction. It can be directly sent to the user's server or cloud platform through the NB base station like GPRS and 4G.
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