Method, terminal and server for allocating Narrow Band Internet of Things system resources

A method for allocating NB-IoT system resources, wherein the method comprises the following steps of:

• acquiring a traffic request of a first terminal, wherein the traffic request includes:
• (1) downlink traffic rate requirement;
• (2) reception strength information, wherein the reception strength information includes one or more of a reception strength of a primary synchronization signal, a reception strength of a secondary synchronization signal and a reception strength of a reference signal in a serving base station of the first terminal;
• (3) reception quality information, wherein the reception quality information includes one or more of a reception quality of the primary synchronization signal, a reception quality of the secondary synchronization signal and a reception quality of the reference signal in the serving base station;
• and (4) traffic priority identifier information;
• determining bearing carriers and the number of the bearing carriers required for bearing downlink data of the first terminal N based on candidate carriers information and the downlink traffic rate requirement, wherein N≥1;
• determining target downlink transmitting power of each of the bearing carriers based on the reception quality information, the determined bearing carriers, the determined number of the bearing carriers and the reception strength information;
• and
• determining to transmit the downlink data of the first terminal on an i-th bearing carrier using the determined target downlink transmitting power if a total downlink transmitting power of the i-th bearing carrier is less than or equal to a first preset threshold.