Fecha de publicación: 04/07/2023 Fuente: Wipo "IOT" The invention provides a 5G antenna inclination angle determination method and system based on NB-IoT (Narrow Band Internet of Things). Comprising the steps that a monitoring center sends a request instruction to an NB-IoT core network; the NB-IoT core network sends the measurement instruction to a target NB-IoT base station based on the target NB-IoT base station information of the inclination angle of the 5G antenna to be measured; the target NB-IoT base station encodes the received measurement instruction in a first radio frequency signal and sends the first radio frequency signal to NB-IoT terminals on each base station antenna board of the target NB-IoT base station; the NB-IoT terminal measures the inclination angle data of the 5G antenna by using an acceleration sensor; encoding the 5G antenna inclination angle data and the terminal ID of the NB-IoT terminal in a second radio frequency signal, and sending the second radio frequency signal to the target NB-IoT base station, so as to return the second radio frequency signal to the monitoring center through the NB-IoT core network; and the monitoring center determines the 5G antenna inclination angle of each base station antenna.