Telefonaktiebolaget Lm Ericsson (publ)

Kaj Johansson

Peter Hedman

Ivo Sedlacek

Gunnar Rydnell

Mikael Wass

Peter Ramle

Hubert Przybysz

Lars Lövsén

Paul Schliwa-Bertling

Stefan Rommer

David Castellanos Zamora

Qian Chen

Timo Forsman

Nianshan Shi

Jan Backman

Zhiwei Qu

Germán Blanco

Germán Blanco Blanco

Germanán Blanco

Shiyu Yang

A wireless device and an Access and Mobility Management Function (AMF) and methods performed by a wireless device and an AMF, respectively.

Avoiding multiple retransmissions of signalling transported by 5G NAS transport

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

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

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

Methods and apparatuses are disclosed for public land mobile network (PLMN) rate control. According to an embodiment, a network function determines whether a value of PLMN rate control applicable to a terminal device has been changed. When determining that the value of PLMN rate control has been changed, the network function sends the changed value of PLMN rate control to the terminal device.

Methods and apparatuses for PLMN rate control

Embodiments herein relate to a wireless device and an Access and Mobility Management Function, AMF, and methods performed by a wireless device and an AMF, respectively.

Systems and methods for efficient delivery of infrequent small data are provided. A system for providing communication infrequent small Protocol Data Units (PDUs) to/from a UE includes an Access Node (AN); a session management functions node; and a User Plane (UP) functions entity. The session management functions node receives a session setup request and selects the UP functions entity and a tunnel identifier associated with the UE. In case of an IP PDU session type, trigger an establishment of a UP. The UP functions entity creates a UE context for the UE; stores the UE context for the UE; completes an establishment in a Control Plane (CP); and provides the AN with uplink tunnel information. The AN stores the UE context and transmits a session setup response to the UE. In this way, an improved ratio of the signalling/user data relation may be obtained for devices sending infrequent small data.

Efficient delivery method and apparatuses for infrequent small data

A method is provided for facilitating recovery from the failure of a P-CSCF within an IP multimedia Subsystem network. A gateway, such as a GGSN, monitors signals arriving at the gateway from the P-CSCF and provides an indication if the monitored signals become unacceptable, for example because of an interruption in the signals. The gateway responds by signalling the unavailability of the P-CSCF to user equipment, which was associated with the P-CSCF during a previous registration with the IMS network. In response, for example, the user equipment affected by the failure may request re-registration with the IMS network using a different available P-CSCF.

Growing community of inventors

Gothenburg, Sweden

Kaj Johansson