It is described an access module for a relay node for a radio telecommunication network. The access module includes an access communication part for providing a radio connection between the relay node and at least one user equipment, and an access interface for connecting the access module to a backhaul module of the relay node via an Internet Protocol network connection, wherein the access module and the backhaul module are spatially separated from each other. It is further described a backhaul module for a relay node, which includes a backhaul communication part for providing a radio connection between the relay node and a base station of the radio telecommunication network, and a backhaul interface for connecting the backhaul module to an access module of the relay node via an Internet Protocol network connection, wherein the backhaul module and the access module are spatially separated from each other. It is further described a relay node including such an access module and such a backhaul module and a radio message forwarding method, which is carried out with at least one of such a relay node.