Spectrum inquiry method and device for automatic frequency coordination protocol

An automatic frequency coordination device, the device comprising:

• at least one processor;
• a storage unit;
• and
• one or more programs that are stored in the storage unit and executed by the at least one processor, the one or more programs comprising instructions for:
• inquiring an automatic frequency coordination server for information of adjacent automatic frequency coordination devices corresponding to the automatic frequency coordination device, and obtaining an adjacent device list corresponding to the automatic frequency coordination device;
• and
• obtaining spectrum information of the adjacent automatic frequency coordination devices in the adjacent device list, and determining, according to the spectrum information, whether to inquire from the automatic frequency coordination server and update the spectrum information of the automatic frequency coordination devices;
• wherein, the step of obtaining spectrum information of the adjacent automatic frequency coordination devices in the adjacent device list comprises:
• passively obtaining the spectrum information of the adjacent automatic frequency coordination devices;
• and
• a step of passively obtaining the spectrum information of the adjacent automatic frequency coordination devices, and determining, according to the spectrum information, whether to inquire from the automatic frequency coordination server and update the spectrum information of the automatic frequency coordination devices comprises:
• inquiring the automatic frequency coordination server for the spectrum information of the automatic frequency coordination device, and storing a third spectrum information of the automatic frequency coordination device;
• receiving a fourth spectrum information of the adjacent automatic frequency coordination devices sent by the adjacent automatic frequency coordination devices;
• calculating difference degree Δ between the third spectral information and the fourth spectral information;
• and
• if the difference degree Δ exceeds the threshold value, then inquiring the automatic frequency coordination server again for the spectrum information of the automatic frequency coordination device itself, and updating the spectrum information to a latest spectrum information returned by the automatic frequency coordination server.