A method in a user equipment for managing dual registration in one or more radio communication systems, the one or more radio communication systems including multiple networks each supporting a different radio access technology, the method comprising: establishing a communication connection between the user equipment and a first one of the multiple networks; and establishing a communication connection between the user equipment and a second one of the multiple networks, while maintaining the communication connection between the user equipment and the first one of the multiple networks; wherein a shared common control element in the user equipment manages the flow of information between the user equipment and each of the multiple networks via the respective communication connections, thereby allowing for parallel user equipment activity in at least the first one and the second one of the multiple networks, wherein the shared common control element includes one or more away patterns, that are each shared with a respective one of the first one and the second one of the multiple networks, where each of the one or more away patterns define periods of time during which the corresponding one of the first one and the second one of the multiple networks should avoid scheduling communications with the user equipment, wherein the shared common control element includes a multilayer non access stratum having respective lower non access stratum associated with a corresponding one of each of the multiple networks, and having an upper common layer non access stratum which coordinates the parallel user equipment activity across the multiple networks; the method further comprising: exchanging radio communication capabilities with one or more core network nodes associated with the multiple networks of the radio communication system; receiving from the upper common layer non access stratum an indication as to whether one or more of the lower non access stratums associated with each of the multiple networks should be used for supporting concurrent access to the multiple networks. establishing a communication connection between the user equipment and a first one of the multiple networks; and establishing a communication connection between the user equipment and a second one of the multiple networks, while maintaining the communication connection between the user equipment and the first one of the multiple networks; wherein a shared common control element in the user equipment manages the flow of information between the user equipment and each of the multiple networks via the respective communication connections, thereby allowing for parallel user equipment activity in at least the first one and the second one of the multiple networks, wherein the shared common control element includes one or more away patterns, that are each shared with a respective one of the first one and the second one of the multiple networks, where each of the one or more away patterns define periods of time during which the corresponding one of the first one and the second one of the multiple networks should avoid scheduling communications with the user equipment, wherein the shared common control element includes a multilayer non access stratum having respective lower non access stratum associated with a corresponding one of each of the multiple networks, and having an upper common layer non access stratum which coordinates the parallel user equipment activity across the multiple networks; the method further comprising: exchanging radio communication capabilities with one or more core network nodes associated with the multiple networks of the radio communication system; receiving from the upper common layer non access stratum an indication as to whether one or more of the lower non access stratums associated with each of the multiple networks should be used for supporting concurrent access to the multiple networks. exchanging radio communication capabilities with one or more core network nodes associated with the multiple networks of the radio communication system; receiving from the upper common layer non access stratum an indication as to whether one or more of the lower non access stratums associated with each of the multiple networks should be used for supporting concurrent access to the multiple networks.