Spectrum manager and method for allocating a shared frequency spectrum to operators in a wireless communication system, as well as a corresponding base station

A base station for wireless communication with terminals in a wireless communication system having a plurality of base stations and a spectrum manager for wireless communication with terminals in the wireless communication system, the spectrum manager configured to:

• group the plurality of base stations which are operated by at least two operators into clusters based on spectrum demand related information, determine a spectrum partition pattern for each cluster based on the spectrum demand related information and information of the grouped based station clusters, a spectrum partition pattern specifying the partition and allocation of frequency spectrum fragments to at least two operators in a corresponding cluster of the wireless communication system, wherein a frequency spectrum fragment is allocated to only one of the at least two operators in each cluster, and forward information regarding the spectrum partition pattern to the plurality of base stations or to one or a plurality of network entities of the at least two operators, the base station configured to:
• receive information regarding the spectrum partition patterns from said spectrum manager;
• and
• communicate with terminals in the wireless communication system on the basis of said received information regarding the spectrum partition patterns.