A network node (110, 120, 130) and a method therein for radio access resource allocation of a mobile station (140) is disclosed. The network node (110, 120, 130) comprises a receiver (630), configured to receive at least one first parameter value associated with a radio communication condition of the mobile station (140), at least one second parameter value associated with communication capabilities of the mobile station (140), and at least one third parameter value indicating operability in MRTD of the mobile station (140). Further the network node (110, 120, 130) comprises a processor (620), configured to allocate at least one radio access resource to the mobile station (140), based on the received parameter values. In addition, the network node (110, 120, 130) comprises a transmitter (610), configured to inform the mobile station (140) of the at least one allocated radio access resource.