Spectrum resource sharing method, device and system in heterogeneous network

A spectrum resource sharing method in a heterogeneous network comprises: a macro base station dividing an available frequency band into an LPN cell dedicated frequency band, a macro cell dedicated frequency band and a shared frequency band of the LPN cell and the macro cell, these frequency bands being non-overlapping; the macro base station configuring, on the basis of the division result of the available frequency band, the operating frequency band. The technical solution can solve the problems of low spectrum utilization and serious same-frequency interference, etc., that exist in frequency spectrum use scheme in the heterogeneous network.