Telefonaktiebolaget Lm Ericsson (Publ)

Maria-Carmen Belinchón Vergara

Hubert Przybysz

Stephen Terrill

Nuria Esteban Vares

Berta Isabel Escribano Bullon

Germán Blanco

Germán Blanco Blanco

Nuria Vares Esteban

Tobias Austrell

Robert Peter Khello

Juan Manuel Fernandez Galmes

Annika Jonsson

Miguel Angel Pallares Lopez

Evaristo Jose Camarero

Luis López Soria

Berta-Isabel Escribano Bullon

A Home Subscriber Server for handling IP Multimedia Subsystem subscriptions comprises means for maintaining associations between public user identities and Service Profiles, where two or more public user identities can be associated with a common Service Profile, and means for identifying to a network node all public user identities that are associated with a common Service Profile.

Service profile handling in the IMS

Service Profile handling in the IMS

The present invention is aimed to carry out an effective handover between a first and a second serving call control servers in order to fit suitable server capabilities for servicing a user, as well as to provide a mechanism whereby a subscriber server may upgrade the selection criteria for assigning the second serving call control server. Therefore, the present invention provides a new method and enhanced servers for re-assigning the second serving call control server, whereby the still ongoing sessions for the user in the first serving call control server are kept alive, and where a serving call control server is arranged to report towards the subscriber server what portions of a user profile are not understood or not supported at said serving call control server.

Servers and methods for handover between two serving call control servers

A method of handling IP Multimedia Public Identity registration within an IP Multimedia Subsystem network. The method comprises receiving at a Call Session Control Function a SIP REGISTER message including a completed IP Multimedia Public Identity Attribute-Value-Pair and no IP Multimedia Private Identity. The method further comprises deriving at the Call Session Control Function an IP Multimedia Private Identity using the IP Multimedia Public Identity and sending a Cx query from the Call Session Control Function to a Home Subscriber Server, the query including the IP Multimedia Public Identity and the derived IP Multimedia Private Identity. The Home Subscriber Server identifies a subsubscription using the IP Multimedia Public Identity, and determines that the derived IP Multimedia Private Identity is not associated with said subscription. The HSS the identifies a default IP Multimedia Private Identity associated with subscription associated with said subscription, and returns a Cx response to said Call Session Control Function including said default IP Multimedia Private Identity. The Call Session Control Function uses the received, default IP Multimedia Private Identity to further handle said SIP message.

IP multimedia subsystem user identity handling

A single IMPI is determined, allowing the progress of a terminating call that addresses a given IMPU shared by more than one IMPI of an IMS subscription. A number of policies are applied per IMPI basis on how to progress the terminating call. A HSS is provided where the policies are configured and, a method is disclosed including IMPU with a number of policies. Additionally, the method may also include a step of configuring at the HSS the more than one IMPI with a priority indication usable to set the order in which the more than one IMPI are checked to determine at least one for which the policies allow to progress the terminating call.

Handling of terminating calls for a shared public user identity in an IP multimedia subsystem

The present invention faces the issue of exercising a parental control over children's activities in the IMS network, in terms of registering into the IMS network as well as in terms of call establishment, and provides for a new IMS subscription model supporting a hierarchy of IMPI's, so-called 'primary' IMPI's and so-called 'secondary' IMPI's, whereby only the primary IMPI's are allowed to register themselves, whereas the secondary IMPI's can only register themselves after having been previously registered by a primary IMPI. To this end, the present invention provides for a new method and an enhanced HSS to allow the implicit registration of one or more &#x2018;secondary&#x2019; IMPI's upon the explicit registration of an IMS subscriber with a given IMPI/IMPU pair, wherein the given IMPI is a &#x2018;primary&#x2019; IMPI and the given IMPU is associated with a registration set of IMPI's which includes said one or more &#x2018;secondary&#x2019; IMPI's.

Method, apparatuses and computer program for parental control over children's activities in an IMS network

A generic method is described for storing data in the HSS () by the S-CSCF () of an IMS. When a SIP message containing new information relating to an IMPI/IMPU pair is received by the S-CSCF (), a data package is created for storage at the HSS (), containing the new information. An SAR command is sent to the HSS () containing an AVP including an instruction to the HSS () and the new data package. In one aspect a unique data package is controlled by the S-CSCF (). When new information relating to the IMPI/IMPU is received in a SIP message, this is added to any previously sent data package to create a new data package. In another aspect the HSS () controls a unique data package, returning the data package to the S-CSCF () to be amended if necessary. In another aspect separate data packages are used.

Storage of network data

Methods and apparatus facilitate recovery of an IMS in which an S-CSCF has suffered a restart (after a failure, software upgrade, or other reasons). One or more of first and second methods comprise submitting, from the S-CSCF towards a HSS, contact data required by the S-CSCF to contact a given subscriber, or to contact a proxy server through which the subscriber is accessible; storing the contact data at the HSS; and providing from the HSS towards an IMS entity, which may be previously assigned S-CSCF or a new S-CSCF, contact information elements selectable from the contact data.

Methods, apparatuses and computer program for IMS recovery upon restart of a S-CSCF

A method and a HSS server allow the implicit registration of more than one IMS Private User Identity (IMPI), or the implicit registration of more than one contact address, or both, upon explicit registration of a subscriber with a given IMPI/IMPU (IMS Public User identity) pair and a given contact address. In particular, the method includes configuring subscriber data for the subscriber at the HSS with at least one implicit registration set selected from: a set of IMPIs associated with a given IMPI or with a given IMPU, and a set of contact addresses per IMPI basis; downloading from the HSS towards the S-CSCF the implicit registration set; and building up a corresponding data model therein.

Growing community of inventors

Getafe, Spain

Maria-Carmen Belinchón Vergara