Telefonaktiebolaget Lm Ericsson (Publ)

Peter Ramle

Josefin Karlsson

Lasse Olsson

Lars-Bertil Olsson

Peter Hedman

Qian Chen

Mikael Wass

Paul Schliwa-Bertling

Stefan Rommer

Gunnar Rydnell

Aldo Bolle

Kaj Johansson

Ralf Keller

Yong Yang

Ann-Christine Sander

Jan Backman

Afshin Abtin

Hans-Olof Sundell

Christer Gustafsson

Folke Ahlström

Thomas Castmo

Ulf Henrik Larsson

Kevin Zhang

Lars Karlqvist

Wang Min Lennartsson

Anders Bränneby

Ulf Larsson

Lars Gunnar Folke AHLSTRÖM

This disclosure combines the Attach and Tracking Area Update procedures into one new mobility procedure: the Registration procedure. One advantage of the proposed Registration procedure is that, if the new SHF is unable to obtain UE data from the old SHF the new SHF will nevertheless register the UE so that the UE does not have to perform another registration procedure (e.g., an Attach procedure).

Systems and methods for user equipment (UE) registration

During PDN connection establishment in the EPC, a UE and a session management entity (SME) (e.g., PGW-C+SMF) exchange information. In case the SME supports more than one S-NSSAI, before the SME provides an S-NSSAI to the UE, the SME should check such that the selected S-NSSAI is among the UE's subscribed S-NSSAIs by retrieving the Subscribed S-NSSAI from a UDM using, for example, the Nudm_SDM_Get service operation.

Selecting a network slice identifier

A method implemented by a Policy Control Function (PCF) of a Core Network (CN) node in a communications network includes receiving a request message from an Access and Mobility management Function (AMF). The request message includes a requested Data Network Name (DNN) designated by a wireless terminal in a Protocol Data Unit (PDU) session establishment request to the AMF. Responsive to the request message and to session-specific information, a selected DNN and a Session Management Function (SMF) index is determined. Each of one or more SMFs are registered with a Network Repository Function (NRF) of the CN node or a different CN node according to a corresponding SMF profile. The selected DNN and the SMF index are sent to the AMF to facilitate selection of one of the one or more SMFs via the NRF for establishment of the PDU session between the wireless terminal and the selected SMF.

DNN manipulation using selection priority

Systems and methods are disclosed herein for Access and Mobility Function (AMF) re-allocation. In one embodiment, a method for AMF re-allocation includes, at an initial AMF, receiving a registration request for a User Equipment (UE) from a Radio Access Network (RAN), deciding to initiate an AMF re-allocation procedure, sending the registration request to the RAN for delivery to a target AMF for the AMF re-allocation procedure, and sending a UE security context of the UE to another Network Function (NF). The method further includes, at the target AMF, receiving a message from the RAN wherein the message includes the registration request from the UE, obtaining the UE security context of the UE from the other NF, and performing protected NAS signaling related to a registration procedure for the UE using the UE security context of the UE.

AMF re-allocation solution with network slice isolation

Network slice configuration update methods for providing a user equipment (UE) registered with (or attempting to register with) a Public Land Mobile Network (PLMN) the most up-to-date Configured NSSAI for the PLMN.

Network slice configuration update

Embodiments herein relate to e.g. a method performed by a network node for handling a communication of a user equipment, UE, in a wireless communication network. The network node transmits to a radio network node associated with the UE, a request message indicating a request for capability data for the UE, wherein the request message comprises a security indication, and wherein the security indication indicates data for setting up a secure connection to the UE.

Radio network node, network node and methods for setting up a secure connection to the user equipment (UE)

Embodiments of a method in a radio access node and a corresponding radio access node are disclosed. The method comprises: sending, to a mobility function entity, first information indicative of a tracking area(s) and a network slice(s) supported by the radio access node; and receiving, from the mobility function entity, second information indicative of a network slice(s) that are: (a) supported by the radio access node and the mobility function entity and (b) permitted by one or more network policies, for each of at least one of the tracking area(s) supported by the radio access node; or (a) supported by the mobility function entity and (b) permitted by one or more network policies, for each of at least one of the tracking area(s) supported by the radio access node. Embodiments of a method in a mobility function entity and a corresponding mobility function entity are also disclosed.

Service area definition at network slicing

A method of operating a core access and mobility management function (AMF) node configured to operate in a communications network includes receiving a protocol data unit (PDU) session request from user equipment (UE). The PDU session request includes a requested data network name (DNN). The method also includes determining if a trigger has been activated. The method further includes receiving a manipulated DNN or replacement DNN for the requested DNN in response to the trigger being activated.

Data network name (DNN) manipulation

Embodiments here in relate to methods for message handling performed by an Access and Mobility Management function, AMF, and a User Equipment, UE, as well as a corresponding AMF and UE. Particularly, embodiments herein relate to methods for handling service requests performed by an Access and Mobility Management function, AMF, and a User Equipment, UE, as well as a corresponding AMF and UE.

Service request handling

Disclosed herein is a method of operation of a network node and a network node for executing the method to enable definition of an allowed area in which data services are provided to a wireless device, the allowed area having a size defined by one or more criteria comprising a predefined maximum number of tracking areas within the allowed area, the method comprises: upon attachment of the wireless device, accepting registrations of new tracking areas for the allowed area of the wireless device as long as the one or more criteria that define the size of the allowed area are satisfied.

Allocation of allowed registered area

Embodiments herein relate to methods for resetting () a dynamically generated allowed area list, a Dynamic Allowed Area (DAA) list, for a user equipment (UE) performed by a network function (AMF, PCF), as well as a corresponding network function configured to perform the method. Further, embodiments herein relate to a corresponding method performed by a UE as well as a UE configured to perform the method.

Reset of dynamic allowed area list for a UE

A mobile management control entity, MBC, being adapted for communicating with an access node, AN, such as an eNodeB, the MB being adapted for issuing a message comprising an indication () of a type of traffic to be reduced to or from the AN, wherein the traffic reduction comprises one of rejecting, ignoring or selectively restricting traffic. An Access Node, AN the AN being adapted for receiving () from the MBC an indication () of a type of traffic to be reduced, receiving () a message () of a UE associated with the indication of a type of traffic to be reduced, rejecting, ignoring or selectively restricting () traffic to or from the UE belonging to the indication of type of traffic to be reduced.

Growing community of inventors

Mölnlycke, Sweden

Peter Ramle