A method and cell controlling node providing radio communication in a first cell of a communication network, for supporting management of the communication network based on performance related reports sent to a management system. Signal measurement reports are obtained from User Equipments being served by the first cell controlling node, on measurements on signals from cell controlling nodes in neighboring cells. Based on the measurement reports, the cell controlling node identifies a neighboring cell from which signals fulfill a signal condition. A current identity of the identified neighboring cell is then selected as a cell cluster identity, in order to send performance related reports to the management system indicating the cell cluster identity. Cell cluster identity can be shared by cells forming a cell cluster of a specific area, and performance related reports can be more uniform regardless of which cell controlling nodes they are received from.