Abstract: A service provisioning mediator entity in a communications system is provided with information defining a set of service provisioning triggering messages. In response to receiving a service provisioning triggering message including an identifier associated with a user from a further network entity involved in providing the service to the user, the service provisioning mediator entity triggers service provisioning in the communications system for the user. The service provisioning triggering message may be sent by a controlling network entity upon receiving from an information store a message indicating that a user attempting to register is not recognized. If the user is recognized, trigger information in the information store may be used for directed a session to a network entity configured to handle service provisioning triggering messages. As a further alternative, a user may request service provisioning by sending a service provisioning triggering message from a communication device.

Abstract: A method for controlling registration in a communication system is provided. In the method, a request for registration of a user relating to a subscriber is received in a network entity. The method further comprises providing the network entity with control information associated with at least one limitation regarding simultaneous registrations allowed for the subscriber or the user and controlling the registration based on the control information. Furthermore, a communication system and a network entity configured to control a registration are provided.

Abstract: A method of reassigning user data in a communications system is disclosed, with a plurality of identities for each user. The method includes storing in a user information store the plurality of identities in association with a first serving controller, the plurality of identities being associated with respective registration statuses selected from a registered status and an unregistered status; detecting that the user has requested registration to a second serving controller using one of the identities; and issuing a registration termination request identifying each identity, which has been newly assigned to the second serving controller as a result of the requested registration. Responsive to the registration termination request, re-registration notification is issued to the user and all identities of the said user from the first serving controller are dissociated.

Abstract: A method of registering users in a mobile communications system, the method comprising the steps of: storing in a user information store primary and secondary identifiers identifying a first serving controller; receiving a request from a serving controller, said request identifying that serving controller using primary and secondary identifiers; comparing the primary identifier in the user information store with the primary identifier in said request and, if there is a mismatch, comparing the secondary identifier in the user information store with the secondary identifier in said request wherein, when there is a mismatch between the secondary identifiers it is determined that the serving controller identified in the request is not the first serving controller; and when there is a match between the secondary identifiers it is determined that the serving controller identified in the request is the first serving controller.

Abstract: A method assists the registration of subscription characteristics in a communications system, wherein a private user identity characteristic can be paired with a public user identity characteristic and more than one private user identity may be associated with a subscription. The method includes transmitting, from a subscription information store entity of the system to a service provision entity of the system, a first message containing data specifying characteristics of a pairing of a first private user identity and a public user identity. The message also includes an indication of any further private user identities other than the first private user identity that are associated with the same subscription as the first private user identity.

Abstract: Authentication of a user of a communication system comprising a session control server and an authentication server, wherein the communication system supports at least two separate authentication schemes, comprising the steps of determining, at the session control server, that a registration request from the user to be authenticated leaves undefined the authentication scheme to be used for authenticating the user; and inquiring, from the authentication server, which authentication scheme is to be used for authenticating the user, said inquiring being based on an identity of the user and pre-stored information at the authentication server on a mapping between user identities and usable authentication schemes.

Abstract: Performing an authentication of a subscriber in a communication system comprising at least two subsystems is disclosed, the authentication of the subscriber requiring authentications of the subscriber in any of the subsystems, the method performing a bundled subscriber authentication by using an authentication in a first one of the subsystems for an authentication in a second one of the subsystems.

Abstract: A service provisioning mediator entity in a communications system is provided with information defining a set of service provisioning triggering messages. In response to receiving a service provisioning triggering message including an identifier associated with a user from a further network entity involved in providing the service to the user, the service provisioning mediator entity triggers service provisioning in the communications system for the user. The service provisioning triggering message may be sent by a controlling network entity upon receiving from an information store a message indicating that a user attempting to register is not recognized. If the user is recognised, trigger information in the information store may be used for directed a session to a network entity configured to handle service provisioning triggering messages. As a further alternative, a user may request rervice provisioning by sending a service provisioning triggering message from a communication device.

Abstract: A method assists the registration of subscription characteristics in a communications system, wherein a private user identity characteristic can be paired with a public user identity characteristic and more than one private user identity may be associated with a subscription. The method includes transmitting, from a subscription information store entity of the system to a service provision entity of the system, a first message containing data specifying characteristics of a pairing of a first private user identity and a public user identity. The message also includes an indication of any further private user identities other than the first private user identity that are associated with the same subscription as the first private user identity.

Abstract: A method of registering users in a mobile communications system, the method comprising the steps of: storing in a user information store primary and secondary identifiers identifying a first serving controller; receiving a request from a serving controller, said request identifying that serving controller using primary and secondary identifiers; comparing the primary identifier in the user information store with the primary identifier in said request and, if there is a mismatch, comparing the secondary identifier in the user information store with the secondary identifier in said request wherein, when there is a mismatch between the secondary identifiers it is determined that the serving controller identified in the request is not the first serving controller; and when there is a match between the secondary identifiers it is determined that the serving controller identified in the request is the first serving controller.

Abstract: A method of reassigning user data in a communications system is disclosed, with a plurality of identities for each user. The method includes storing in a user information store the plurality of identities in association with a first serving controller, the plurality of identities being associated with respective registration statuses selected from a registered status and an unregistered status; detecting that the user has requested registration to a second serving controller using one of the identities; and issuing a registration termination request identifying each identity, which has been newly assigned to the second serving controller as a result of the requested registration. Responsive to the registration termination request, re-registration notification is issued to the user and all identities of the said user from the first serving controller are dissociated.

Abstract: A method for controlling registration in a communication system is provided. In the method, a request for registration of a user relating to a subscriber is received in a network entity. The method further comprises providing the network entity with control information associated with at least one limitation regarding simultaneous registrations allowed for the subscriber or the user and controlling the registration based on the control information. Furthermore, a communication system and a network entity configured to control a registration are provided.