Abstract: A method for an emulation or interworking functionality between a first mobile communication network and a second mobile communication network includes: transmitting a specific modification within one of the first and second mobile communication networks regarding a corresponding plurality of network functions or services or network elements to an emulation function; and translating the specific modification within the one of the first and second mobile communication networks regarding the corresponding plurality of network functions or services or network elements to or into a corresponding specific modification of a first interface or second interface of the emulation function.

Abstract: A method for an interconnection functionality between a first mobile communication network and a second mobile communication network includes: associating or assigning private identifier information to specific public land mobile network (PLMN) identifier information related to the second mobile communication network; and in respect of signalling messages and/or data traffic packets that are to be routed or to be addressed or to be processed, providing for or supporting, by a network identifier and number translating functionality, a replacement and/or a translation, in both directions, between the private identifier information and the specific PLMN identifier information related to the second mobile communication network.

Abstract: A method for enhanced emergency call handling and/or continuation of an emergency call in a telecommunications network includes: in a first step, an emergency call is initiated by a mobile communication device and set up as an IP multimedia subsystem emergency call; in a second step, during or subsequent to the first step, the mobile communication device receives, from the telecommunications network, a temporary local profile information comprising a security credential information and comprising or corresponding to a public identity of the mobile communication device and provided by the telecommunications network; and in a third step, subsequent to the second step, the mobile communication device triggers an IP multimedia subsystem registration at or to the telecommunications network, using the temporary local profile information.

Abstract: A method for an emulation functionality between a first mobile communication network and a second mobile communication network includes: implementing, by an emulation function and its first and second interfaces using a respective plurality of emulated network functions or services and emulated network elements, an exchange of messages between the first and second mobile communication networks, thereby mapping between equivalent capabilities or needs of respective network functions or services and respective network elements and providing for: implementation of first individual interfaces or first individual interface types between the network functions or services and respective corresponding emulated network functions or services in the form of application programming interfaces (APIs); and implementation of second individual interfaces or second individual interface types between the network elements and respective corresponding emulated network elements in the form of network standard-specific interfaces

Abstract: A method for an enhanced initiation and/or routing of an emergency session in a packet switched communication system includes: determining or defining—by a mobile communication device or by means of the mobile communication device—of personal communication ability information and/or personal medical condition information of a user of the mobile communication device; and initiating the emergency session by using the mobile communication device. Initiating the emergency session comprises transmitting an emergency message, via a packet switched connection of the mobile communication device, to the packet switched communication system. The personal communication ability information and/or the personal medical condition information is part of the emergency message.

Abstract: A 5G communication system includes at least one visited network slice; a home network slice; and a bridge entity. The at least one visited network slice comprises a visited radio access network (RAN) entity. The home network slice comprises a home Access and Mobility Management Function (AMF) entity. The bridge entity coupled between the visited RAN entity and the home AMF entity, wherein the bridge entity is configured to route a registration request message of a roaming user equipment (UE) received from the visited RAN entity to the home AMF entity.

Abstract: A radio access network (RAN) slice provides radio access to a communication network for a user equipment. The RAN slice is uniquely identified by a RAN slice identifier. The RAN slice includes: a base station for providing access to the RAN slice for the user equipment; an access and mobility management function (AMF) entity configured to handle the RAN slice identifier identifying the RAN slice; and a session management function (SMF) entity configured to handle data communications of the user equipment over the RAN slice. The base station is configured to receive an attach request originating from the user equipment to connect to the RAN slice, and to reject access to the RAN slice in response to the attach request not comprising the RAN slice identifier.

Abstract: A method for an emulation and/or interworking functionality between a first mobile communication network and a second mobile communication network includes: transmitting a specific modification within one of the first and second mobile communication networks regarding a corresponding plurality of network functions or services or network elements to an emulation function; and translating the specific modification within the one of the first and second mobile communication networks regarding the corresponding plurality of network functions or services or network elements to or into a corresponding specific modification of a first and/or second interface of the emulation function.

Abstract: A method for an interconnection functionality between a first mobile communication network and a second mobile communication network includes: associating or assigning private identifier information to specific public land mobile network (PLMN) identifier information related to the second mobile communication network; and in respect of signalling messages and/or data traffic packets that are to be routed or to be addressed or to be processed, providing for or supporting, by a network identifier and number translating functionality, a replacement and/or a translation, in both directions, between the private identifier information and the specific PLMN identifier information related to the second mobile communication network.

Abstract: A method for an emulation and/or interworking functionality between a first mobile communication network and a second mobile communication network includes: implementing, by the emulation function and its first and second interfaces using a respective plurality of emulated network functions or services and emulated network elements, an exchange of messages towards and/or from both the first and second mobile communication networks, thereby mapping between equivalent capabilities and/or needs of the respective network functions or services and network elements and providing for: the implementation of first individual interfaces or first individual interface types between network functions or services and the respective corresponding emulated network functions or services in the form of application programming interfaces (APIs); and the implementation of second individual interfaces or second individual interface types between the network elements and the respective corresponding emulated network elements in th

Abstract: A method for establishing a roaming connection over a bootstrap server includes: transmitting, by a communication terminal, a registration request to a network access entity of a visited communication network, wherein the registration request comprises an identification of the communication terminal; forwarding, by the network access entity, the registration request to a bootstrap server of the visited communication network; transmitting, by the bootstrap server, network access data for accessing the visited communication network to the communication terminal based on the identification of the communication terminal, wherein the network access data indicates capabilities of the visited communication network; and establishing, by the communication terminal, the roaming connection via the visited communication network based on the network access data.

Abstract: A user equipment is connected to a telecommunications network comprising or associated to an IMS network. The user equipment comprises a memory for storing request timer information related to a request timeout time interval. A method for handling an Internet Multimedia Subsystem (IMS) conversational service of the user equipment includes: storing, by the user equipment, the request timer information in the memory of the user equipment; and attempting, by the user equipment, to register to the IMS network and/or to initiate the IMS conversational service while the request timeout time interval has not expired.

Abstract: A method for an enhanced initiation and/or routing of an emergency session in a packet switched communication system includes: determining or defining—by a mobile communication device or by means of the mobile communication device—of personal communication ability information and/or personal medical condition information of a user of the mobile communication device; and initiating the emergency session by using the mobile communication device. Initiating the emergency session comprises transmitting an emergency message, via a packet switched connection of the mobile communication device, to the packet switched communication system. The personal communication ability information and/or the personal medical condition information is part of the emergency message.

Abstract: A method for initiating a roaming communication link with a user equipment in a visited communication network comprises: transmitting a registration request by the UE to a network entity of the visited communication network; detecting by the network entity of the visited communication network that the registration request is related to a roaming communication with the UE; determining by the network entity of the visited communication network a home communication network of the UE; retrieving, by the network entity of the visited communication network, subscriber-specific data of the UE from a routing data layer entity of the visited communication network for roaming the UE in the visited communication network, wherein the RDL entity is coupled to the home communication network of the UE via a data base interface; and initiating the roaming communication link with the UE based on the subscriber-specific data of the UE received via the RDL entity.

Abstract: A method for establishing a roaming connection over a bootstrap server includes: transmitting, by a communication terminal, a registration request to a network access entity of a visited communication network, wherein the registration request comprises an identification of the communication terminal; forwarding, by the network access entity, the registration request to a bootstrap server of the visited communication network; transmitting, by the bootstrap server, network access data for accessing the visited communication network to the communication terminal based on the identification of the communication terminal, wherein the network access data indicates capabilities of the visited communication network; and establishing, by the communication terminal, the roaming connection via the visited communication network based on the network access data.

Abstract: A telecommunications network comprises an access network and a core network. The access network is a packet switched oriented access network. A user equipment comprises or is able to access the local emergency service information. The local emergency service information is provisioned or provided to the user equipment by the telecommunications network or by another telecommunications network. A packet switched emergency call is initiated, by the user equipment, while the user equipment is connected to the telecommunications network, and an emergency uniform resource name is transmitted, by the user equipment, to a network node of the telecommunications network. The emergency uniform resource name comprises: country and/or network information; and emergency type information and/or emergency call telephone number information. The packet switched emergency call is transferred or routed to a public safety answering point.

Abstract: A method for processing an emergency message in a communication network includes: transmitting, by a user equipment (UE), an emergency message to an access network entity of a network slice of the communication network, wherein the emergency message comprises an emergency identifier (E_ID); detecting by the access network entity of the network slice of the communication network, based on the E_ID, that the emergency message is related to an emergency; forwarding the emergency message to an emergency network slice of the communication network based on the emergency detection; and establishing, by the emergency network slice, a communication link between the UE and a public safety answering point (PSAP) for processing the emergency message.

Abstract: A method for processing an emergency message in a communication network includes: transmitting, by a user equipment (UE), an emergency message to an access network entity of a network slice of the communication network, wherein the emergency message comprises an emergency identifier (E_ID); detecting by the access network entity of the network slice of the communication network, based on the E_ID, that the emergency message is related to an emergency; forwarding the emergency message to an emergency network slice of the communication network based on the emergency detection; and establishing, by the emergency network slice, a communication link between the UE and a public safety answering point (PSAP) for processing the emergency message.

Abstract: A radio access network (RAN) slice provides radio access to a communication network for a user equipment. The RAN slice is uniquely identified by a RAN slice identifier. The RAN slice includes: a base station for providing access to the RAN slice for the user equipment; an access and mobility management function (AMF) entity configured to handle the RAN slice identifier identifying the RAN slice; and a session management function (SMF) entity configured to handle data communications of the user equipment over the RAN slice. The base station is configured to receive an attach request originating from the user equipment to connect to the RAN slice, and to reject access to the RAN slice in response to the attach request not comprising the RAN slice identifier.

Abstract: A 5G communication system includes at least one visited network slice; a home network slice; and a bridge entity. The at least one visited network slice comprises a visited radio access network (RAN) entity. The home network slice comprises a home Access and Mobility Management Function (AMF) entity. The bridge entity coupled between the visited RAN entity and the home AMF entity, wherein the bridge entity is configured to route a registration request message of a roaming user equipment (UE) received from the visited RAN entity to the home AMF entity.