Channel transmission method, device and system for NB-IoT

The invention provides a channel transmission method, device and system for NB-IoT. The method comprises the following step: an NB-IoT base station determines a time-frequency resource location of a channel that is subjected to frequency hopping according to frequency hopping information, and performs channel transmission with an NB-IoT terminal on a time-frequency resource corresponding to the time-frequency resource location. Thereby, the purpose of introducing frequency hopping to the NB-IoT can be achieved, and the frequency diversity gain can be increased through frequency hopping.