Embodiments herein relate to a method performed by a network node (100,12,14) for performing allocation of at least a part of a spectrum of radio resources to one or more radio network nodes in a wireless communication network (1). The network node (100,12,14) receives condition data from the one or more radio network nodes, wherein each condition data indicates a condition of a respective radio network node out of the one or more radio network nodes. The network node (100,12,14) performs an allocation of at least a part of the spectrum of radio resources to the one or more radio network nodes based on the received condition data. The network node (100,12,14) transmits to the one or more network nodes, data indicating the allocation of the at least a part of the spectrum of radio resources for the one or more radio network nodes.