Abstract: The invention concerns a method for radio communication in a cellular radio network having a radio access network and a core network (CN), the method comprising connecting at least two different core networks to one radio access network (RAN), and sharing at least one network element (RNC, BTS) of the radio access network (RAN) between the at least two different core networks.

Abstract: A method, a system, a network device, a terminal device, and computer programs for controlling a packet data protocol context in a mobile communication system. According to an example embodiment, an enhanced context modification request may be generated at a terminal device of the mobile communication system by adding a preservation information indicating a desired preservation of a packet data protocol context. The enhanced context modification request may be transmitted towards a core network of the mobile communication system, and a context-related decision may be controlled at the core network based on the preservation information.

Abstract: A method for managing user equipment version information in a mobile communications network is provided. A mobile communications network, a network element of core network, and a user equipment implement the method. The mobile communications network comprises a plurality of user equipment, a plurality of network elements, and one or more user equipment version corresponding to a user equipment functionality set that corresponds to a group of user equipment. At least one user equipment is configured to spontaneously integrate an identifier that indicates its user equipment version within a defined signaling message transmitted from the user equipment to a network element, and at least one network element is configured to receive the signaling message and to extract the identifier that indicates the user equipment version from the signaling message.

Abstract: A method, a system, a network device, a terminal device, and computer programs for controlling a packet data protocol context in a mobile communication system. According to an example embodiment, an enhanced context modification request may be generated at a terminal device of the mobile communication system by adding a preservation information indicating a desired preservation of a packet data protocol context. The enhanced context modification request may be transmitted towards a core network of the mobile communication system, and a context-related decision may be controlled at the core network based on the preservation information.

Abstract: A communication management mechanism for a communication network, in which the core network determines whether a user equipment, which was connected to the core network via an access network subsystem, is still reachable via a signaling connection to this specific access network subsystem when a connection release procedure is to be performed. When it is determined that the access network subsystem is assumed by the core network to not be able to reach via a signaling connection the user equipment, an indication element is generated which indicates the result of the core network that the user equipment can not be reached by the access network subsystem via this hitherto signaling connection. This indication element is transmitted to the access network, for example, in connection with a connection release command.

Abstract: A communication management mechanism for a communication network, in which the core network determines whether a user equipment, which was connected to the core network via an access network subsystem, is still reachable via a signaling connection to this specific access network subsystem when a connection release procedure is to be performed. When it is determined that the access network subsystem is assumed by the core network to not be able to reach via a signaling connection the user equipment, an indication element is generated which indicates the result of the core network that the user equipment can not be reached by the access network subsystem via this hitherto signaling connection. This indication element is transmitted to the access network, for example, in connection with a connection release command.

Abstract: A method for managing user equipment version information in a mobile communications network is provided. A mobile communications network, a network element of core network, and a user equipment implement the method. The mobile communications network comprises a plurality of user equipment, a plurality of network elements, and one or more user equipment version corresponding to a user equipment functionality set that corresponds to a group of user equipment. At least one user equipment is configured to spontaneously integrate an identifier that indicates its user equipment version within a defined signaling message transmitted from the user equipment to a network element, and at least one network element is configured to receive the signaling message and to extract the identifier that indicates the user equipment version from the signaling message.

Abstract: The invention concerns a method for radio communication in a cellular radio network having a radio access network and a core network (CN), the method comprising connecting at least two different core networks to one radio access network (RAN), and sharing at least one network element (RNC, BTS) of the radio access network (RAN) between the at least two different core networks.