Nokia Technologies Oy

Nokia Solutions and Networks Oy

Georgios Gkellas

Bruno Landais

Laurent Thiebaut

Saurabh Khare

Anja Jerichow

Devaki Chandramouli

Chaitanya Aggarwal

Horst Thomas Belling

Yannick Lair

Philippe Godin

Colin Leon Kahn

Alessio Casati

Klaus Hoffmann

Rainer Liebhart

Ulrich Wiehe

Shubhranshu Singh

Alexander Milinski

Pallab Gupta

Lazaros Gkatzikis

Carlos Manzanares Sancho

Mu He

Attila Molnár

Szabolcs Csaba Deak

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.

Apparatus, method, and computer program

Systems, methods, apparatuses, and computer program products for determination of non-3GPP interworking function(s) (N3IWFs), which support slices targeted by a device or user equipment (UE), are provided. One method may include transmitting, by a UE or device, a request to at least one network node. The request may be to obtain information on network slices supported by at least one N3IWF. The method may also include receiving, from the at least one network node, a response comprising information for one or more N3IWFs and, based on the received information for the N3IWF(s), selecting one of the N3IWF(s) to use to connect to a 5G core network (5GC).

Methods and apparatuses for determination of non-3GPP interworking function (N3IWF)

According to an example aspect of the present invention, there is provided an apparatus configured to function as a network function repository, and transmit to a network function consumer an access token authorizing access to a service provided by a network function producer, the access token comprising an at least one of: indication of a fully qualified domain name of the network function consumer, an indication of a domain from which access to the network function producer is allowed and an indication of a stand-alone non-public network from which access to the network function producer is allowed.

Network security

According to an example aspect of the present invention, there is provided an apparatus configured to process a request for an access token authorizing access for a network function consumer to a service provided by a network function producer, the request being received in the apparatus from a service communication proxy, wherein the processing comprises one or more of the following verification: verification that a credential data element comprised in the request, cryptographically signed by the network function consumer, identifies the request, the service or a type of the service, and verification with reference to a further node, or to a profile of the network function consumer, that the service communication proxy is authorized to act on behalf of the network function consumer, and transmit, responsive to at least one of the verifications being successful, the requested access token, the access token comprising an indication of the service communication proxy.

Systems, methods, apparatuses, and computer program products for access traffic steering, switching, and splitting (ATSSS) with branching point (BP) on the path are provided. The method may include determining that an existing user plane function is sub-optimal in terms of routing and latency incurred with respect to traffic for a given packet data unit session of a user equipment. The method may also include establishing, based on the determination, a new user plane function for the packet data unit session. The method may further include establishing a branching point user plane function that interfaces with the existing user plane function, the new user plane function, and a plurality of network access types. In addition, the method may include updating the user equipment by providing the user equipment with relevant multi-access traffic steering rules.

Multiple user plane function supporting access traffic steering, switching, and splitting for multi-access packet data unit session

There is provided an apparatus comprising means for receiving information about an identification of a network function set associated with at least one packet data network connection. The means is further configured for, in response to receiving an indication that a network function instance of the network function set supporting the at least one packet data network connection is no longer available, transferring the at least one packet data network connection from the network function instance to another network function instance comprised within the network function set.

Mobility management entity initiated transfer of a packet data network connection

According to an example aspect of the present invention, there is provided a method comprising, receiving, by an intermediary network function, a subscription request from a network function consumer requesting data of a network function producer, wherein the subscription request comprises a client credential assertion of the network function consumer and an access token, authorizing and authenticating, by the intermediary network function, the network function consumer upon successful validation of the access token and the client credential assertion validation and transmitting, by the intermediary network function, an access token request to an authorization server to get another access token, wherein said another access token is to be used to validate the network function consumer to access services of the network function producer, and the access token request comprises the client credential assertion of the network function consumer requesting data of the network function producer.

Authorization in communication networks

There is provided an apparatus comprising at least one processor and at least one memory including a computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the apparatus at least to: receive, at a first network repository function in a first network from a security edge protection proxy in a second network, a request for discovering one or more roaming hubs and/or security edge protection proxies in the first network; and send, from the first network repository function to the security edge protection proxy in the second network, a response comprising information identifying the one or more roaming hubs and/or security edge protection proxies in the first network and information identifying one or more further networks which can be reached via a respective roaming hub and/or security edge protection proxy in the first network.

Method, apparatus and computer program

Techniques for determining a registration area are provided. A network entity may receive one or more indications of topology information from one or more radio access network nodes. Each indication of topology information is related to one or more tracking areas and each tracking area is associated with one or more cells in a radio access network served by each of the one or more radio access network nodes. The network entity may determine a registration area based at least in part on the received one or more indications of topology information related to the one or more tracking areas.

Method and apparatus for tracking area topology

Systems, methods, apparatuses, and computer program products for load and/or overload control in 5GC SBA are provided. One method may include transmitting, from a network function (NF) service consumer, overload control information (OCI) comprising scope information to a network function (NF) service producer or service communication proxy (SCP). The scope information may include at least one of: scope set to a notification uniform resource identifier (URI), or scope set to one of network function (NF) service instance, network function (NF) service set, network function (NF) instance, or network function (NF) set, and optionally a service name.

Overload control information from a network function service consumer in 5G core network (5GC) service based architecture (SBA)

Systems, methods, apparatuses, and computer program products for the assignment of a common edge application server (EAS) for ad-hoc groups of user equipment (UE). A method may include generating or updating binding information comprising a correlation between a group identifier of an ad-hoc group of user equipment (UE) and an edge application server (EAS) identifier assigned to the ad-hoc group, and storing, updating, and/or deleting the binding information, or causing the binding information to be stored, in a database.

Edge application server assignment for ad-hoc groups of user equipment

There is provided an apparatus, said apparatus comprising means for providing, from a first function instance of a set of first function instances to a second function, first information comprising an indication that a protocol session between the first function and the second function is controllable by different instances of the set of first function instances and receiving, at one of the set of first function instances from the second function, a protocol session related message based on the first information.

Apparatus, method and computer program for user plane function control by a set of controllers

Preference information is received at a network repository function from a first network function, the preference information indicating one or more optional preferences for a respective second network function or network function service. Information is provided to the first network function about one or more second network functions or network function services, the one or more second network functions or network function services being selected taking into account the preference information.

Method, apparatus, and computer program

There is provided an apparatus that comprises means for receiving a request from a second network function including information relating to the second network function, determining, based on the information relating to the second network function, at least one proxy function and in response to the request, providing to the second network function information relating to the at least one determined proxy function.

Apparatus, method and computer program related to information about SCP(s) and SEPP(s) stored in NRF

Systems, methods, and software for inter-PLMN communications. In one embodiment, a roaming hub receives a message from a sending entity across an N32 interface, and determines whether the message includes an HTTP custom header that indicates a PLMN that is validated. When the message as received does not include the HTTP custom header, the roaming hub adds the HTTP custom header to the message that indicates the PLMN of the sending entity, integrity protects the HTTP custom header, and forwards the message toward a receiving entity.

Growing community of inventors

Petroupoli Attikis, Greece

Georgios Gkellas