NETWORK NODE AND METHOD FOR MANAGING POWER OF CELL REFERENCE SYMBOLS

A method performed by a network node for managing power of Cell Reference Symbols, CRS, wherein the network node 110 operates one or more cells and the network node 110 is configured to transmit the CRS in a first power mode. When the network node 110 identifies (301) a first cell 130 which is not actively serving any UEs 120, which cell is also referred to as an empty cell 130, the network node 110 reduces (302) the power of the CRS in the first cell 130 in relation to the first power mode. By reducing the power of the CRS, the overall interference of the CRS from the empty cell 130 is reduced, thereby enhancing the performance in cells actively serving UEs 120.