Abstract: There is provided an apparatus, method and computer program for an apparatus for a first policy control function, that causes to apparatus to: receive, from a session management function, a request for a policy to be established for a session for a subscriber, wherein the subscriber is subscribed in a second domain and the first policy control function is configured to operate in a first domain; determine a policy for the requested session, the determined policy comprising an indication of an allowed usage for the subscriber and at least one trigger condition for the policy to be updated; signal the at least one trigger condition to the session management function; and monitor the allowed usage for the subscriber by updating the policy in response to receipt of an indication that the at least one trigger condition has been met.

Abstract: Various aspects described herein relate to apparatus, methods, and computer programs for retrieving an identifier of a subscription network of a mobile subscriber in a communication system. For example, one such method includes registering with a network repository function network function as a mobile number portability network function providing a service allowing a consumer to retrieve an identifier of a subscription network of a mobile subscriber. This method also includes receiving a request from the consumer to retrieve the identifier of the subscription network of the mobile subscriber. This method further includes sending a response to the consumer comprising information to retrieve the identifier of the subscription network of the mobile subscriber.

Abstract: Systems, methods, apparatuses, and computer program products for providing IMS level awareness of high latency device are provided. One method, when a UE attaches to EPC, receiving, at a network node, an indication that the UE is a high latency device. The method may also include assigning, to the UE, an IP address selected from a special IP address range that is designated specifically for high latency devices. When the UE performs IMS registration, the method may include determining that the UE is a high latency UE based on the UE's IP address provided with the IMS registration request and assigned during the EPC attach procedure.

Abstract: It is provided a method, comprising monitoring, for each of plural attempts of a web identity to register for an internet protocol multimedia service, if the respective attempt is received; generating, for each of the plural attempts if the respective attempt is received, a respective private user identification based on the web identity and a respective distinguishing identifier, wherein probability that two of the private user identifications have a same value is less than a predefined limit; providing the respective private user identification in response to the respective attempt.

Abstract: Systems, methods, apparatuses, and computer program products for providing IMS level awareness of high latency device are provided. One method, when a UE attaches to EPC, receiving, at a network node, an indication that the UE is a high latency device. The method may also include assigning, to the UE, an IP address selected from a special IP address range that is designated specifically for high latency devices. When the UE performs IMS registration, the method may include determining that the UE is a high latency UE based on the UE's IP address provided with the IMS registration request and assigned during the EPC attach procedure.

Abstract: It is provided a method, comprising monitoring, for each of plural attempts of a web identity to register for an internet protocol multimedia service, if the respective attempt is received; generating, for each of the plural attempts if the respective attempt is received, a respective private user identification based on the web identity and a respective distinguishing identifier, wherein probability that two of the private user identifications have a same value is less than a predefined limit; providing the respective private user identification in response to the respective attempt.

Abstract: Systems, methods, apparatuses, and computer program products for providing security between WebRTC clients and IMS are provided. One method includes storing, by a network node, at least one parameter per internet protocol multimedia subsystem (IMS) subscription, where the at least one parameter comprises at least one identity of any web real time communication (WebRTC) web server function that is authorized to authenticate an IMS subscriber in WebRTC. The method may further include receiving a WebRTC web server function identity from a call state control function, comparing the received WebRTC web server function identity with the at least one parameter associated with the IMS subscription, and rejecting IMS communication when there is not a match between the received WebRTC web server function identity and the at least one parameter associated with the IMS subscription.

Abstract: A mechanism for an apparatus in a communication network is described. The mechanism comprises receiving provisioning from a second apparatus, wherein said provisioning comprising at least a public identity and a pre-defined range of private identity associated with the public identity, receiving a request comprising a first public identity and its associated private identity from a third apparatus, determining the first public identity already exists in the apparatus, determining the received private identity is not identical to any private identity already provisioned in the apparatus, determining the received private identity is not identical to any private identity in a temporary profile, determining the received private identity is within a pre-defined range of private identity associated with the first public identity, creating a temporary private identity identical to the received private identity and a temporary profile for the received private identity.

Abstract: The present invention addresses method, apparatus and computer program product for enabling International Mobile Equipment Identifier based Lawful Interception for Internet Protocol IP Multimedia Subsystem, VoLTE and beyond systems. Thereby, an International Mobile Equipment Identifier allocated to a User Equipment and verified by an Evolved Packet Core is transmitted from a Mobility Management Entity to a Packet Gateway, the International Mobile Equipment Identifier is transmitted to a Proxy Call State Control Function via Policy and Charging Rules Function within the Policy and Charging Control procedures at Internet Protocol Multimedia Subsystem registration, and the International Mobile Equipment Identifier is transmitted to a Serving Call State Control Function at call set-up.

Abstract: A method, apparatus, and computer readable medium is provided for a reverse single radio voice call continuity handover procedure, where an access transfer control function is only allocated dynamically during a call setup phase, if the access transfer control function is needed to support the reverse single radio voice call continuity handover procedure.

Abstract: Systems, methods, apparatuses, and computer program products for providing security between WebRTC clients and IMS are provided. One method includes storing, by a network node, at least one parameter per internet protocol multimedia subsystem (IMS) subscription, where the at least one parameter comprises at least one identity of any web real time communication (WebRTC) web server function that is authorized to authenticate an IMS subscriber in WebRTC. The method may further include receiving a WebRTC web server function identity from a call state control function, comparing the received WebRTC web server function identity with the at least one parameter associated with the IMS subscription, and rejecting IMS communication when there is not a match between the received WebRTC web server function identity and the at least one parameter associated with the IMS subscription.

Abstract: The invention relates to a session control entity, method and computer program for receiving an indication indicating a network where an access network entity for a user is located, transmitting a message for establishing a session for the user, and, including the indication indicating the network in the message.

Abstract: The invention relates to transferring subscription data of a user from a first subscription server to a second subscription server, and involving the first subscription server in handling of terminating requests to the user, until the user performs registration procedure, and involving the second subscription server in handling of terminating requests to the user, after the user has performed the registration procedure.

Abstract: The invention relates to a session control entity, a method and a computer program product for assigning for a user, during establishment of a packet data connection, an interne protocol (IP) address allocated for an emergency packet data connection if the packet data connection is an emergency packet data connection.

Abstract: For multiple registration of a multimodal communication terminal (MKE) via at least one access network in an IMS-based service communication system in a mobile and/or convergent communication system, where the multimodal communication terminal (MKE) is registered for at least one communication service via a first access network (WIAN) in at least one service control unit in the IMS-based service communication system (S-CSCF), a registration message with an access network identifier (ZK) is produced and is transmitted to the at least one service control unit (S-CSCF) in the IMS-based service communication system. The at least one service control unit evaluates the access network identifier (ZK) and takes it as a basis for performing further registration of the multimodal communication terminal in the IMS-based service communication system (S-CSCF).

Abstract: The present invention relates to an S-CSCF receiving a terminating request associated with a called user and executing services for the called user. The S-CSCF determines an indication in Session Case indicating originating services handling in call forwarding situation, and based on this executes a subset of services for the user.

Abstract: A method for user registration in Internet protocol multimedia subsystem is provided including receiving a registration request including a first identification of a control function, comparing said first identification of the control function with a second identification of the control function, and proceeding with the registration request based on the result of said comparing.

Abstract: For multiple registration of a multimodal communication terminal (MKE) via at least one access network in an IMS-based service communication system in a mobile and/or convergent communication system, where the multimodal communication terminal (MKE) is registered for at least one communication service via a first access network (WIAN) in at least one service control unit in the IMS-based service communication system (S-CSCF), a registration message with an access network identifier (ZK) is produced and is transmitted to the at least one service control unit (S-CSCF) in the IMS-based service communication system. The at least one service control unit evaluates the access network identifier (ZK) and takes it as a basis for performing further registration of the multimodal communication terminal in the IMS-based service communication system (S-CSCF).

Abstract: A method for maintaining at least one data connection to a terminal during a changeover from a first communication access network to at least one second communication access network, comprising at least two private user identities and at least two IP addresses are allocated to the terminal in order to form a public user identity for the user of the terminal, wherein the terminal registers itself in an IP communication network in parallel per communication access network with in each case one private user identity and with the common public user identity and an IP address for the first communication access network and the at least one second communication access network.

Abstract: The present invention relates to an S-CSCF receiving a terminating request associated with a called user and executing services for the called user. The S-CSCF determines an indication in Session Case indicating originating services handling in call forwarding situation, and based on this executes a subset of services for the user.