What is the difference between NB module and 2G, is it using a base station?

NB is a new 3GPP protocol. It is not the same standard as 2G GSM, but the two are similar. They are also cellular networks regulated by operators. However, NB has lower power consumption and more access points, but NB transmission The rate will be lower. In addition, NB and 2G are not the same base station. Domestic operators switch the base station of 2G to the base station of NB, and deploy NB in the frequency band of 2G.