Inter-network shared frequency spectrum optimization system and method

An inter-network shared frequency spectrum optimization method comprising at least a first network and a second network, the first network comprising a first cell cluster, the second network comprising a second cell cluster, the cell clusters having a shared spectrum pool, and each cell cluster having a plurality of base stations working in a CSG mode or an OPEN mode, wherein

• the shared spectrum pool is established between the first network and the second network, the first network triggers initialization of the shared spectrum pool according to an spectrum demand thereof, and then the first network and the second network initialize the shared spectrum pool;
• the initialization of the shared spectrum pool comprises following steps:
• the first network triggering the initialization of the shared spectrum pool according to a resource demand thereof, and sending a shared spectrum pool initialization indication signaling to the second network;
• the second network calculating a shared spectrum pool initialized allocation proportion or a shared spectrum pool initialized allocation value, according to parameters of the shared spectrum pool initialization indication signaling, and sending the shared spectrum pool initialized allocation proportion or the shared spectrum pool initialized allocation value to the first network;
• and
• the first network comparing the shared spectrum pool initialized allocation proportion or the shared spectrum pool initialized allocation value received by the first network, with a shared spectrum pool initialized allocation proportion or a shared spectrum pool initialized allocation value calculated by the first network,
• when the comparison result shows consistency, sending an indication to the second network and allocating spectrum resources, and when the comparison result shows inconsistency, sending an indication to the second network and returning to the calculating step by the second network;
• after the initialization of the shared spectrum pool is completed, quantity of a spectrum resource occupied by each OPEN-mode base station in the first cell cluster is same as that of a spectrum resource occupied by each OPEN-mode base station in the second cell cluster;
• or, quantity of spectrum resources individually occupied by terminals served by each OPEN-mode base station in the first cell cluster is same as that of spectrum resources individually occupied by terminals served by each OPEN-mode base station in the second cell cluster.