Method for sharing frequencty spectrum between networks

A method for sharing a frequency spectrum between networks, used to implement allocation of a shared frequency spectrum between a first network (A) and a second network (B), comprising the following steps:

• measuring a strength of a network signal of the second network (B);
• calculating a network overlapping level indicator according to the strength of the network signal of the second network (B), and obtaining network-coverage-topology-based information of the second network (B) according to the network overlapping level indicator (V), the network overlapping level indicator indicating a level at which the first network (A) overlaps with the second network (B);
• the first network (A) exchanging the network- coverage-topology-based information of the second network (B) with the second network (B), and obtaining network-coverage-topology-based information of the first network (A) from the second network (B);
• and
• calculating the shared frequency spectrum shared between the first network (A) and the second network (B).