In an embodiment, a method of managing resources in a cell cluster of a wireless network is disclosed. The cell cluster comprises a plurality of cells, each cell having an inner region and an outer region. The method comprises: setting, for each cell, a power ratio, the power ratio being the ratio of the power level to be used for transmission of signals to wireless devices located in the inner region of that cell to the power level to be used for transmission of signals to wireless devices located in the outer region of that cell; allocating network resources from a plurality of network resources to wireless devices located in the outer regions; for each cell, allocating network resources to wireless devices located in the inner region of that cell from network resources of the plurality of network resources that are not allocated to wireless devices located in the outer region of that cell; receiving, for each cell, indications of a first data throughput rate for transmission of data to the wireless devices located in the outer regions; comparing, for each cell, the first data throughput rate with a threshold data rate; and decreasing the power ratio for cells in which the first data throughput rate is less than the threshold data rate.