Telefonaktiebolaget Lm Ericsson (publ)

Peter Hedman

Paul Schliwa-Bertling

Hans Bertil Rönneke

Ralf Keller

Peter Ramle

Monica Wifvesson

Lars-Bertil Olsson

George Foti

Stefan Rommer

Noamen Ben Henda

Qian Chen

Ivo Sedlacek

Fredrik Lindholm

Magnus Norberg Olsson

David Castellanos Zamora

John Stenfelt

Juan Antonio Sanchez Herrero

Oscar Ohlsson

Christine Jost

Ann-Christine Sander

Mikael Wass

Shabnam Sultana

Christian Herrero Verón

Kaj Johansson

Magnus Stattin

Angelo Centonza

Prajwol Kumar Nakarmi

Lasse Olsson

Håkan Palm

Zu Qiang

Josefin Karlsson

Branko Djordjevic

Aldo Bolle

Maria Esther Bas Sanchez

Jarl Tomas Holmström

Yong Yang

Reiner Ludwig

Vesa Lehtovirta

Dinand Roeland

Vesa Torvinen

Magnus Karlsson

Maria Belen Pancorbo Marcos

Malik Wahaj Arshad

Vlasios Tsiatsis

Lars Lövsén

Hans Bertil Ronneke

Hans Mattsson

Bengt Lindoff

Gunnar Mildh

Thorsten Lohmar

Riikka Susitaival

Emre Yavuz

Christian Bergljung

Gunnar Rydnell

Nianshan Shi

Min Zhu

Ahmad Shawky Muhanna

Elena Myhre

Kai-Erik Sunell

Juying Gan

Zhiwei Qu

Ylva Timner

Thomas Johansson

Martin Van Der Zee

Daniel Nilsson

Miguel Angel Garcia Martin

Lei Xia

Angel Navas Cornejo

Nipun Sharma

Massimo Condoluci

Di Liu

Virgilio Fiorese

Tony Olsson

Lars Lovsen

Belen Pancorbo Marcos

Hakan Palm

Vinicius Samuel Landi Fiorese

Taowen Zhang

Per Lindell

The present disclosure relates to supporting provisioning of a User Equipment (UE) with credentials to access a communication network, such as a Standalone Non-Public Network (SNPN). A credential server stores a binding associating UE device information, including an onboarding identifier, with network information for the SNPN. The credential server receives, from a network function in an onboarding network, a request for authentication of the UE that includes the onboarding identifier. The credential server responds with a message comprising the network information bound to the device information to enable provisioning of the credentials to the UE.

Onboarding devices in standalone non-public networks

A method performed by a Radio Access Network (RAN) node for handling a service request from a User Equipment, UE, in a wireless communications network. The RAN node supports a first network slice in a first Area, A1. The RAN node connects () to the UE via A1. The RAN node sends () to a Core Network (CN) node, a service request from the UE. The service request relates to one or more network slices that the UE requests in a certain Area. The RAN node receives () an indication from the CN node. The indication indicates the one or more network slices requested by the UE together with any one or more out of: —A list of network slices that are allowed to be accessed by the UE in the current A1, and—an indication of a new area priority policy associated to the one or more network slices that are requested by the UE. The RAN node decides () how to handle the service request from the UE based on the indication received from the CN node.

Radio network node, core network node and methods in a wireless communications network

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 by a core network node of a core network of a wireless communication system for authenticating a user equipment, UE, to the core network includes receiving a first authentication request to authenticate the UE to the core network, determining that the UE should be authenticated by an external authentication entity that is external to the wireless communication system, transmitting a second authentication request to the external authentication entity, the second authentication request identifying the UE, receiving an authentication response from the external authentication entity verifying authenticity of the UE, the authentication response including a master key, and deriving a first key for securing communications with the UE from the master key.

Non-public network authentication in 5G

A method for PDU session management. The method includes receiving, at an Access and Mobility Management function entity (AMF), a registration request message transmitted by a user equipment (UE), wherein the registration request message comprises a list of PDU sessions to be activated; and, in response to receiving the registration request message, the AMF transmitting to a session management function (SMF) a request message for requesting the SMF to activate UP resources for at least one of the PDU sessions identified in the list of PDU sessions.

PDU session management

Systems and methods are disclosed herein for counting registered User Equipments (UEs) in a network slice service area. In one embodiment, a method performed by an Access and Mobility Management Function (AMF) in a core network of a cellular communications system comprises receiving a registration request from a UE and, responsive to receiving the registration request from the UE, initiating a registration procedure and determining whether the registration request received from the UE is applicable for update of counting for a respective network slice to be used by the UE. The method further comprises sending, to a Network Function (NF) that maintains a count of a number of UEs that are using the respective network slice, a message that causes an update to the count of the number of UEs that are using the respective network slice.

Registered UE count in slice service area

A method for notification control in a communication system performed by a core network is presented. The method comprising: establishing a PDU session; enabling a radio access network, RAN, to send a notification that notifying a UE, of the unfulfillment or re-fulfillment of QoS, for a QoS Flow in the PDU session using an AN-signaling based notification. The AN-signaling based notification including the unfulfillment or re-fulfillment of QoS parameters as defined in a QoS Flow description. The AN-signaling based notification further including expected QoS figures, an expected time interval and an accuracy of the notification. The UE/AF may further adapt their behavior according to the expected QoS provided by the AN.

Notification control in a communication system

Methods and apparatuses are disclosed for implementing mobile terminating call. According to an embodiment, a subscriber management node obtains, from a mobility management node, an indication that indicates whether a packet switching (PS) connection is currently active for a terminal device. The subscriber management node receives, from a server, a first query about whether a PS access domain is to be used for a terminating call to the terminal device. The subscriber management node sends a response to the server based on the obtained indication.

Methods and apparatuses for implementing mobile terminating call

A method to operate a UE for handling security policy for user plane protection of communications in a communications system is provided. The method includes transmitting a packet data unit (PDU) session establishment request network access stratum (NAS) message toward an Access and Mobility Management Function (AMF) to establish a PDU session. The method further includes receiving an access network (AN) specific resource setup message indicating whether the UE is to activate integrity protection for data radio bearers (DRBs) serving the PDU session.

Non-orthogonal signaling for radio access networks

A method performed by a wireless device (). The method comprises performing, over a first cell () associated with a public network, a non-access stratum (NAS) procedure in which the wireless device () is authenticated as being authorized to access a non-public network. The method also comprises after performing the NAS procedure, receiving from the first cell () a mobility command that commands the wireless device () to perform a mobility procedure towards a second cell () associated with the non-public network.

Privacy in a wireless communication network

A method of operating a core network node in a communication system includes receiving, at a first network function, a registration message from a radio access network node to register a user equipment, UE, and, responsive to the registration message, transmitting a request for information on whether network slices associated with the UE are subject to Network Slice-Specific Authentication and Authorization, NSSAA. Responsive to the request, the method receives a response message including Single-Network Slice Selection Assistance Information, S-NSSAI, information associated with the UE, the S-NSSAI information including NSSAA status information relating to the S-NSSAI information, and determines whether to initiate an NSSAA procedure with the UE based on the S-NSSAI information. Related network nodes are disclosed.

Storage of network slice authorization status

In a wireless communication network implementing network slicing (NS), an Initial Access and Mobility Management Function (AMF) for a user equipment (UE) in one NS is able to re-allocate a UE to a Target AMF in a different NS, despite not being able to directly communicate with the Target AMF due to NS security restrictions. In a first embodiment, the Initial AMF transfers the UE context—including its security context—to a Default AMF. The Default AMF has the capability to communicate with network functions in different NSes. The Default AMF transfers the UE context to the Target AMF. In a second embodiment, a security key Kamf' is horizontally derived in a manner that avoids NS security conflicts. The derived key is transferred to the UE and Target AMF, which establish a security context. In a third embodiment, the Initial AMF allocates a Token, and transfers it, along with the UE security context (directly or via RAN) to the Default AMF. The Default AMF then transfers the security context to the Target AMF.

AMF re-allocation due to slicing

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

The present disclosure is directed to a method in a mobility management node and such a node for delivering data to a wireless communication device (WCD) served by the mobility management node, operating in a communication network comprising a network entity (NE) and a radio access network (RAN) node serving the WCD, the method comprises: obtaining capability information indicating whether the RAN node supports acknowledgement of a successful delivery of data to the WCD; receiving a data message sent by the NE comprising user data intended for the WCD; sending a control plane message comprising the user data to the RAN node for further delivery to the WCD; sending a response to the NE indicating the outcome of the data delivery.

Reliable data delivery over non-access stratum

A method of operating a session management network of a telecommunications network is disclosed. The method includes sending to a management network node an accept of a session establishment request of a wireless device; and receiving a message from the management network node, including a session connectivity rejection message sent by a radio access network node serving the wireless device. The session connectivity rejection message indicates a rejection of the acceptance of the session establishment request of the wireless device The method further includes determining that the radio access network did not send the accept of the session establishment request to the wireless device based on the session connectivity rejection message creating a session establishment rejection message; and transmitting the session establishment rejection message toward the wireless device.

Methods for avoiding transmission of unnecessary messages in wireless communications and related networks and network nodes

Growing community of inventors

Helsingborg, Sweden

Peter Hedman