Expansion and Evolution of NB-IoT under 5G Co-construction and Sharing

Abstract

NB-IoT is an IoT technology focusing on low power and wide area (LPWA). Due to its advantages of wide coverage, multiple connections, low cost, and low power consumption, it has been widely used worldwide. With the advent of the era of 5G Internet of Everything and the growth of China's domestic sharing economy, the market's demand for NB-IoT capacity has increased, and individual scenarios require NB-IoT capacity expansion. In December 2021, China Telecom has written the technical requirements for NB-IoT equipment to support the B3 frequency band into the corporate standard. Under the background of co-construction and sharing between the two major domestic operators, how to use B3(1800MHz) and B5(800MHz) bands for NB-IOT capacity expansion has become a problem to be solved. Considering that the business of the two major operators on the B3 band will evolve to 5G under the background of co-construction and sharing, this paper analyses the characteristics of NB-IoT technology and networking scheme, and proposes the expansion scheme of NB-IoT technology in the B3 and B5 bands in combination with the characteristics of NB-IoT, which provides a reference for operators to jointly use B3 and B5 bands deploy NB-IoT in the future.