A network node for wireless access is operating in a cellular network for an unlicensed frequency band and arranged for serving wireless devices in the unlicensed frequency band. The serving of the wireless devices in the unlicensed band relies on making a clear channel assessment in the unlicensed band for ascertaining that the unlicensed band is currently not occupied by other transmissions and when not occupied commencing transmission. Upon commencing the transmission, the network node is arranged to attempt scheduling a paging message together with a message providing a discovery signal and determine whether the transmission of the discovery signal and the paging message use the same subframe scrambling code, and if they do, transmit the paging message and the discovery signal in the same subframe. A method and computer program for the network node are also disclosed.