Patent attributes
A method, apparatus, and computer program for operating a shared spectrum pool in a cellular communication system is disclosed. The method includes: selecting, by a network apparatus of a first cellular communication system, a first frequency sub-band comprised in a shared spectrum pool of a licensed frequency spectrum as a primary sub-band, wherein the shared spectrum pool is divided into a plurality of sub-bands; forming, by the network apparatus, a frequency allocation pattern for the first frequency band, wherein the frequency allocation pattern specifies frequency allocation to at least one base station of the first cellular communication system within the first frequency sub-band; causing, by the network apparatus, said at least one base station of the first cellular communication system to occupy the first frequency sub-band according to the frequency allocation pattern; and causing, by the network apparatus, at least one base station of the first cellular communication system to occupy a second frequency sub-band comprised in the shared spectrum pool of a licensed frequency spectrum, wherein the second sub-band is a primary sub-band of a second cellular communication system.
