A wireless device and a method performed thereby for camping on a cell in a wireless communication network when the wireless device is in an idle mode of operation. The wireless communication network comprises a low power network node and a neighbouring network node, wherein the low power network node and the neighbouring network node are configured with a first set of frequency bands B' and the low power network node is configured with a second set of frequency bands B". The second set of frequency bands B" is specific for the low power network node and the neighbouring network node is not configured with the second set of frequency bands B".