Telefonaktiebolaget Lm Ericsson (publ)

Novacloud Licensing LLC

Attila Mihály

Lars Westberg

András Császár

Szilveszter Nádas

Åke Arvidsson

Johan Rune

György Miklós

János Harmatos

Maria Luisa Mas Rosique

Maria Cruz Bartolomé Rodrigo

Zoltán Richárd Turányi

Maria Cruz Bartolome Rodrigo

Oktavian Papp

Magnus Hallenstål

András Zahemszky

Christian Gotare

Gábor Molnár

Gunnar Mildh

Paul Schliwa-Bertling

Göran Rune

Jan Backman

Gergely Pongrácz

Xuejun Cai

Bence Formanek

Magnus Olsson

Bence Cserna

Ying Zhang

Robert Bengt Skog

Magnus Norberg Olsson

Miguel Angel Muñoz De La Torre Alonso

Ayodele Damola

Hans Oskar Eriksson

Lasse Olsson

Lars-Bertil Olsson

Wenliang Xu

Geza Szabo

Marcus Ihlar

Hans-Olof Sundell

Stefan Hellkvist

Róbert Szabó

Zaheduzzaman Sarker

Zoltan Richard Turanyi

Alpár Jüttner

Gábor Tóth

Zoltan Toth

Gábor Paller

Zoltan Lajos Kis

Zoltán Lajos Kis

Mate Szalay-Beko

Gyõrgy Miklös

Gyoergy Miklós

Andràs Csàszàr

András Csàszàr

Endre Szesztay

Octavian Papp

Norbert Purger

Zoltán Tóth

Zoltán Richárd TURÁNYI

András CSÁSZÁR

Zoltán TURÁNYI

Gabor Molnar

Maria Cruz BartolomÉ Rodrigo

Oktávián Papp

Mirja Kuehlewind

Embodiments describing methods performed by a system comprising Network functions including at least a Session Management Function and a User Plane Function for performing a UPF re-anchoring for an application triggered at a User Equipment over an established Packet Data Unit (PDU) Session, where when the system receives the initial trigger for a service triggered by the application (e.g., a DNS request or an application level request), a determination is made by the system based on the information related to the application that re-anchoring of the UPF for that application into a local UPF closer to the UE is required. When re-anchoring of the UPF is successful, the initial trigger is discarded, and the UE is instructed to establish a new PDU session over the local UPF for that application.

Application triggered setup of distributed anchor for edge computing

One aspect provides a method performed by a radio access network node in a telecommunications network. The method comprises: responsive to detection of a trigger event associated with a wireless device having a connection to the telecommunications network via the radio access network node or seeking to establish a connection to the telecommunications network via the radio access network node, transmitting a message directly to a user plane core network node providing functionality for the connection via the radio access network node, the message comprising one or more of: an indication of an identifier of the wireless device; and an indication of an identifier of a session for the wireless device. The user plane core network node has access to a data storage layer shared between a plurality of user plane core network nodes, the data storage layer storing respective contexts for the sessions of a plurality of wireless devices, including the wireless device.

Tunnel initiation in a communications network

One aspect provides a method performed by a radio access network node in a telecommunications network. The method comprises: responsive to detection of a trigger event associated with a wireless device having a connection to the telecommunications network via the radio access network node or seeking to establish a connection to the telecommunications network via the radio access network node, transmitting, directly to a user plane core network node, a message initiating establishment of a user-plane tunnel for the connection between the radio access network node and the user plane core network node. The message comprises one or more of: an indication of an identifier of the wireless device; and an indication of an identifier of a session for the wireless device, and further comprises an indication of a downlink tunnel endpoint identifier of the radio access network node.

A method for providing a policy rule from a User Equipment to a mobile communication system. The method includes establishing a communication channel between the UE and a User Plane entity of the mobile communication system, sending the policy rule through the communication channel from the UE to the UP entity and receiving at the UE from the UP entity an indication of whether the policy rule is accepted or rejected. The UP entity may send the policy rule to a first Control Plane entity for authorization. In turn, the first CP entity may send the policy rule to a second Control Plane entity for authorization. The User Plane entity may be a User Plane Function including a Collaborative Performance Enhancement (COPE) entity.

Policy provisioning to a mobile communication system

A Session Management Function, SMF, () determines that a first data path for a Packet Data Unit, PDU, session between an application client () and a first edge application server, EAS, () should be relocated from a first local PDU session anchor, PSA, () and a first uplink classifier and branching point, ULCL/BP, () to a second PSA () and a second ULCL/BP (). Further, the SMF () determines an edge client subnet, ECS, associated with the second PSA (). Further, the SMF () sends, to an application function, AF, () associated with the application client (), a notification of the relocation. The notification includes an identifier of the ECS and a data network access identifier, DNAI, associated with the second PSA (). From the AF (), the SMF () receives a response that includes an identifier of a second EAS () and the DNAI associated with the second PSA (). Based on the response, the SMF () establishes a second data path for the PDU session between the application client () and the second EAS () via the second PSA () and the second ULCL/BP ().

Coordination of edge application server reselection using edge client subnet

Methods and apparatus are disclosed herein for coordinating seamless service continuity to Edge Application Server (EAS) at relocation in a cellular communications system. In some embodiments, an Application Function (AF) sends to a Policy Control Function (PCF) a steering request comprising a keepExistingPSA indication that indicates that a current user plane (UP) path to a current Data Network Access Identifier (DNAI) and to an EAS should be maintained while a new path to a new DNAI and EAS is established. The PCF generates Policy and Charging Control (PCC) rules including the keepExistingPSA indication, and provides the PCC rules to a Session Management Function (SMF). The SMF determines, based on the keepExistingPSA indication, that simultaneous connectivity over the source PSA and the target PSA is to be provided, and configures the target PSA while maintaining the UP connectivity over the source PSA to the current DNAI and to the EAS.

Mechanism for coordinating seamless service continuity to edge application server at relocation

A method to operate a first service instance set associated with a first storage resource node. The first service instance set may be for a service, and the first storage resource node may store context data for the service. An access context request may be transmitted to the first storage resource node, and the access context request may include an identification for a subgroup of context data being requested from the first storage resource node. An access context response may be received from the first storage resource node. The access context response may correspond to the access context request, and the access context response may include the subgroup of context data corresponding to the identification.

Methods providing network service restoration context and related service instance sets and storage resource nodes

A method () for reducing undesirable visual effects, such as judder, in a video image having one or more frames is disclosed. A server node () generates graphics layers from 3D objects, and augments the layers with the Z-layer information and motion information for the objects. The server node then groups () the graphics layers, encodes () the groups into a video stream such that every video frame of the stream is a composite video frame of the graphics layers, adds () the motion information to the composite video frame, and sends () the stream to a client device (). Upon receipt, the client device extracts () the motion information, compensates the positions of the graphics layers using the Z-layer information and the motion information, and applies a selected positional time-warp algorithm to compensate for the translational and rotational movement of the user's head (). The resultant layers are then combined into a video image and rendered () for the user.

Split rendering for extended reality (XR) applications

The disclosure relates to a method executed in a domain name system (DNS) proxy, and to a DNS proxy, apparatus or system for application server (AS) discovery for edge computing in a mobile network. The method comprises receiving a DNS query from a user equipment (UE) with an application fully qualified domain name (FQDN). Based on FQDN, retrieving a location of the UE that sent the DNS query; adding subnet(s) or full IP address(es) of one or more preferred location for accessing to a data network (DN) as one or more Extension mechanisms for DNS (EDNS) client subnet (ECS) options in the DNS query; forwarding the DNS query to a mobile network operator (MNO) DNS; receiving a DNS response and based on the DNS response determining an AS site and AS IP address(es); requesting traffic steering and sending the DNS response to the UE.

Method for identification of traffic suitable for edge breakout and for traffic steering in a mobile network

A network provides PDU sessions between wireless devices and data networks. UPFs in the network handle the user planes of these PDU sessions, while SMFs in the network manage the PDU sessions. The SMFs have dedicated interfaces for signaling sessions to the UPFs. In the occasion that managing of a PDU session has to be transferred from one SMF to another SMF, the first SMF has to release the signalling session with the UPF for the PDU session, and a second SMF has to re-establish the signaling session with the UPF for the same PDU session. To avoid that during the transfer of the management responsibility transfer the wireless device experiences a hick-up in the PDU session the first SMS includes a control element in the release message to the UPF, indicating to the UPF that the signaling session for the PDU session will be re-established by a second SMF, and that the UPF shall continue the handling of the PDU session till re-establishment.

Handling of session context

A service controller receives an operation request for a service for a consumer node of a communication network, the operation request including a context identifier referring to a context related to the operation request. The service controller forwards the operation request to a first service instance set being identified by the service controller as handling the context related to the operation request. Responsive to determining that the first service instance set is unreachable or unavailable, the service controller selects a second service instance set as a candidate to handle the context related to the operation request. The operation request for the service is then forwarded to the second service instance set.

Methods of operating service control nodes

A redirect server is configured in a service-based architecture, SBA, domain of a wireless communication network. The redirect server may receive configuration signaling indicating that a location of a resource or service in the SBA domain has changed from an old location to a new location. The redirect server receives, from a requestor in the SBA domain, a request that targets the old location of the resource or service in the SBA domain. The redirect, responsive to the request, transmits, from the redirect server to the requestor, a response that redirects the requestor to the new location of the resource or service in the SBA domain.

Redirect server in a wireless communication network

A technique for concurrency control of transactions in a system comprising a plurality of application instances accessing a database system is provided. A method implementation of the technique is performed by the database system and comprises receiving (S) a first transaction start request indicating a start of a first transaction to lock first data stored in the database system against access requests not belonging to the first transaction while the first transaction is ongoing, receiving (S) a second transaction start request indicating a start of a second transaction to lock second data stored in the database system against access requests not belonging to the second transaction while the second transaction is ongoing, the second data at least partly overlapping with the first data, receiving (S) an access request to at least a portion of the second data that overlaps with the first data while the first transaction and the second transaction are ongoing, the access request belonging to the second transaction, and controlling (S) acceptance of the access request based on determining whether the second transaction has a higher priority than the first transaction.

Technique for concurrency control

A dedicated Network Gateway Service (NGS) () in a Service Based Architecture (SBA) domain (), deployed in a core network of a telecommunications system (), arranged for operational message handling with communication entities () of the telecommunications system external of the SBA domain () in accordance with communication interface protocols (N1, N2, N4) of the telecommunications system (). The NGS () is further arranged for service message handling in the SBA domain () with at least one of an Access and Mobility Function (AMF) () and a Session Management Function (SMF) () of the SBA domain ().

Method of and a device for operating network gateway services in a service based telecommunications system

A method of registering a service in a telecommunication network having a Service Based Architecture, SBA. The telecommunication network has a Service Collection Function, SCF, including a plurality of distinct SBA services and including a Collection Controller, CoC, for registering and discovering the plurality of distinct SBA services within the SCF. The telecommunication network further includes a Network Repository Function, NRF, for registering and discovering services within the telecommunication network. The method includes the steps of receiving, by the CoC, from an of the distinct SBA services, a registration message for registering a service, determining, by the CoC, that the service is to be provided within the SCF, refraining, by the CoC, from forwarding the registration message to said NRF based on the determination, registering, by the CoC, the service in the CoC for discovering the service by any of the plurality of distinct SBA services within the SCF.

Method of registering a service in a telecommunication network having a service based architecture, SBA, as well as a corresponding collection controller

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Dunakeszi, Hungary

Attila Mihály