The invention relates to method and structures for mobility policy e.g. in a Worldwide Interoperability for Microwave Access, WiMAX, based communication. According to embodiments, a method and devices for mobility control of a terminal are provided wherein a mobility policy parameter defines the mobility control of the terminal. The mobility policy parameter preferably is part of a mobility policy or subscription record stored for a subscriber of the terminal in a subscriber data base. The mobility policy parameter may include at least one of an indication of mobility restriction, possibly indicating included or excluded cells or areas etc; an indication of fixed access, indicating a fixed base station to which the subscriber has to request access; nomadicity, indicating that no handover is allowed for that particular subscriber; and restricted mobility limited to a group of base stations or areas. Embodiments allow to deploy mobile WiMAX for fixed access applications, enabling reuse of existing technology and further development towards full mobility.