Telefonaktiebolaget Lm Ericsson (publ)

Qian Chen

Stefan Rommer

Paul Schliwa-Bertling

Hans Bertil Rönneke

Daniel Nilsson

Yong Yang

Peter Ramle

Peter Hedman

Josefin Karlsson

Noamen Ben Henda

Juying Gan

Lasse Olsson

Mikael Wass

Monica Wifvesson

Vesa Torvinen

Åsa Larsen

Magnus Stattin

Lars-Bertil Olsson

Jan Backman

Göran Hall

Chunbo Wang

Gunnar Mildh

Karl Norrman

Mats Näslund

Vesa Lehtovirta

Christofer Lindheimer

Ivo Sedlacek

Christine Jost

Yunjie Lu

Vlasios Tsiatsis

Roland Gustafsson

Gang Ren

Alessio Terzani

Angelo Centonza

George Foti

Patrik Rugeland

Prajwol Kumar Nakarmi

Gunnar Rydnell

Nianshan Shi

Ritesh Shreevastav

Åke Busin

Ann-Christine Sander

Ulf Mattsson

Shabnam Sultana

Jinyin Zhu

Aldo Bolle

Patrik Dannebro

Kaj Johansson

Tony Olsson

Erik Wikström

Hanbing Zhang

Mohammed Yazid Lyazidi

Håkan Tranberg

Erik Wikstroem

A method performed by an AMF. The method includes receiving a first request to establish UP for a UE's PDU session and, in response to receiving the request to establish UP for the UE's PDU session, determining whether a condition is satisfied. Determining whether the condition is satisfied comprises determining if the UE is in the idle state with respect to a non-3GPP access, wherein the condition is not satisfied if the UE is not in the idle state with respect to the non-3GPP access. The method also includes initiating paging of the UE by a 3GPP access as a result of determining that the condition is satisfied.

Handling a UE that is in the idle state

Apparatuses and methods for DDD status event handling with I-SMF improvement. In one embodiment, a session management function, SMF, node is provided. The SMF node includes processing circuitry configured to receive a subscription request to an event associated with the SMF node where the subscription request includes at least one of a packet detection rule, PDR, information and a Traffic Descriptor, and instruct a user plane function, UPF, node based at least on the subscription request.

Status event handling associated with a session management function (SMF) node

An Access and Mobility Management Function ('AMF') can include processing circuitry and memory coupled to the processing circuitry. The memory has instructions stored therein that are executable by the processing circuitry to cause the AMF to perform operations. The operations include determining that selection of a Session Management Function (“SMF”) from a plurality of SMFs of a communications system is needed. The operations further include, responsive to the determination, generating a network function (“NF”) discovery request including a service area indication requesting service area information for discovered SMFs. The operations further include communicating the NF discovery request toward a NF Repository Function (“NRF”). The operations further include receiving a NF discovery response including SMF identifiers and service area information for a list of SMFs. The operations further include selecting the SMF from the list of SMFs.

Session management function service area information provision

Procedures are provided for robust handling of NAS request messages that contain a spurious information element (IE). The spurious information element could include a NAS message container containing a NAS message with the wrong procedure type, i.e., a procedure type that does not match the type of the parent NAS message. The spurious information elements could also include redundant IEs that are not necessary for the emergency services fallback request.

Robust NAS layer signaling

Methods supporting a Quality of Service (QoS) update during a Handover (HO) procedure are disclosed herein. More specifically, methods performed by a Radio Access Network (RAN) node and a Core Network (CN) node for supporting a QoS update during an HO are provided. The methods disclosed herein can facilitate flexible New Generation (NG)-RAN (NG-RAN) deployment with a mixture of NG-RAN nodes capable or incapable of supporting additional parameters in an HO procedure. The methods also make it possible to provide smooth NG-RAN software updates between different software releases.

QoS update handling alternatives during Xn HO

Apparatuses and methods for configuration of downlink data measurement at mobile terminating early data transmission (MT-EDT) are provided. In one embodiment, a method implemented at a network node includes determining whether to measure a size of downlink data for a mobile terminating early data transmission, MT-EDT, procedure associated with a user equipment, UE; as a result of the determination, obtaining a measurement of the size of the downlink data; and optionally, sending the measurement of the size of the downlink data to a second network node.

Configuration of downlink data measurement at mobile terminating early data transmission (MT-EDT)

A method, UE, and computer programs are provided where the UE has multiple universal subscriber identity modules. Information is received from a first PLMN indicating there is one of mobile terminating (MT) signaling or data in the first PLMN while the UE is in a second PLMN. Responsive to receiving the information, a service request is sent to an AMF node of the second PLMN. A radio resource control (RRC) connection release is received from a RAN node in response to sending the service request. Responsive to receiving the RRC connection release, the second PLMN is left to be in the first PLMN.

Graceful leaving procedure for multiple USIM UE

Systems and methods for handling a wireless device in a Configuration Management (CM)-Connected state with Radio Resource Control (RRC) Inactive state are provided. In some embodiments, a method for performing a mobility transfer from a Fifth Generation network to an Evolved Packet System (EPS) network includes a 5G network node: receiving, from an EPS network node, a context request for context associated with a User Equipment (UE); determining data forwarding information associated with the UE; and sending, to the EPS network node, a context response comprising context information associated with the UE and data forwarding information associated with the UE. In this way, packet losses will be minimized leading to improved end user performance.

Handling of UE in CM-connected state with RRC inactive state

An example method includes a method performed by a wireless device for sending a message relating to location services. The method includes establishing a user plane connection with a location management function, and sending a message relating to location services to the location management function using the user plane connection.

Messages relating to location services

The present disclosure proposes a method of an endpoint of a user plane path between an access network and a core network in a telecommunication network, comprising: detecting whether a failure exists on the user plane path or not; and notifying a node in the core network of the failure in order for the node to handle the failure, upon detecting the failure. With this method, the failure can be handled timely, thus minimizing the service interruption.

Detection and handling of failure on user plane path

Disclosed herein is a method of operating a RAN node of a wireless communication network, the method comprising: receiving a connection resume request message from a wireless terminal at the RAN node instructing the RAN node to establish a connection with the wireless terminal; providing release information for the wireless terminal at the RAN node; receiving uplink data from the wireless terminal at the RAN node, wherein the uplink data is associated with the connection resume request message; and transmitting a connection release message to the wireless terminal after receiving the uplink data responsive to the release information for the wireless terminal, wherein the connection release message instructs the wireless terminal to release and/or suspend the connection.

User plane optimizations for 5G cellular internet of things

Various embodiments of the present disclosure provide methods and apparatuses for improved packet detection rule provision. A method performed by a first network entity comprises: transmitting packet detection information, PDI, to a second network entity, wherein the PDI indicates information on one or more traffic endpoints on which packets are to be detected.

Method and apparatus for improved packet detection rule provision

Embodiments herein relate generally to a Control plane, CP, node, a method performed by the CP node, a Radio Access Network, RAN, node and a method performed by the RAN node. More particularly the embodiments herein relate to handling paging.

Nodes and methods for handling paging

An Access and Mobility Management Function (AMF) adapted for taking part in handover from a 5G system (5GS) to an Evolved Packet System (EPS).

PDN and PDU session type mapping and capability discovery

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

Growing community of inventors

Mölndal, Sweden

Qian Chen