Telefonaktiebolaget Lm Ericsson (publ)

Guangdong Oppo Mobile Telecommunications Corp., Ltd.

China Mobile Communications Corporation

Unwired Planet, LLC

Das, Sajal Kumar

Lopez, Miguel

Schliwa-bertling, Paul

Sundberg, Mårten

Liberg, Olof

Telefonaktiebolaget L M Ericsson Ab (publ)

Paul Schliwa-Bertling

John Walter Diachina

Mårten Sundberg

Gunnar Mildh

Peter Hedman

Andreas Bergström

Angelo Centonza

Magnus Stattin

Jari Tapio Vikberg

Stefan Rommer

Osman Nuri Can Yilmaz

Icaro L J Da Silva

Karl Norrman

Olof Liberg

Stefan Wager

Jose Luis Pradas

Joachim Sachs

Pradeepa Ramachandra

Miguel Lopez

Andreas Höglund

Pontus Wallentin

Noamen Ben Henda

Martin Hessler

Henning Wiemann

Mattias Bergström

Walter Müller

Torsten Dudda

Monica Wifvesson

Johan Rune

Yufei W Blankenship

Rui Fan

Ralf Keller

Oumer Teyeb

Riikka Susitaival

Reiner Ludwig

Magnus Norberg Olsson

Robert Baldemair

Yi-Pin Eric Wang

Erik A Eriksson

Sorour Falahati

Tomas Nylander

Kumar Balachandran

Janne Peisa

Thorsten Lohmar

Jan Christoffersson

Yong Yang

Jonas Fröberg Olsson

Niklas Johansson

Nicklas Johansson

Jens Bergqvist

Qian Chen

Håkan Axelsson

Hans Bertil Rönneke

Christofer Lindheimer

Alexander Vesely

György Miklós

Lars-Bertil Olsson

Stefan Johansson

Karl Hellwig

Oscar Zee

Nianshan Shi

Oscar Ohlsson

Stefan Engström

Maria Belen Pancorbo Marcos

Peter Ramle

Emre Yavuz

János Farkas

Dinand Roeland

Tomas Hedberg

Henrik Enbuske

Stefano Ruffini

Magnus Karlsson

Mehdi Amirijoo

Prajwol Kumar Nakarmi

Attila Mihály

Hans Hannu

Lasse Olsson

Göran Rune

Magnus Sandgren

Niklas Andgart

Stefan Wänstedt

Mattias Andersson

Vesa Lehtovirta

Patrik Rugeland

Ying Sun

Sándor Rácz

Patrik Salmela

Patrik Torgny Karlsson

Zhenhua Zou

Tuomas Tirronen

Bernard Smeets

Filip Mestanov

Johan Moe

Ivo Sedlacek

Vesa Torvinen

Sara Sandberg

Dennis Sundman

Anna Larmo

José Araújo

A method is performed by a source Central Unit (CU) in an Integrated Access and Wireless Access Backhaul (IAB) network. The method includes transmitting, by the source CU, a message requesting a handover of a plurality of migrating devices associated with a first IAB node migrating from the source CU to a target CU. The message comprises at least one globally unique identifier of at least one management function serving the plurality of migrating devices.

N2 aspects of integrated access and wireless access backhaul node inter-donor migration

A method, network node and wireless device for network guided wireless device (WD) cell reselection are disclosed. According to one aspect, a method includes obtaining an indication of a set of parameters of a plurality of sets of parameters, the parameters in a set including at least one index and at least one priority, the index used to configure the WD to select a frequency priority based at least in part on the index. The method further includes selecting one of a network slice, frequency and service, based at least in part on the index and included in the set of parameters.

Method for network-guided WD cell reselection

A wireless device () receives, over an access stratum (), a capability enquiry () that requests the wireless device () to transmit capability information () indicating one or more capabilities of the wireless device (). After receiving the capability enquiry (), the wireless device () generates a token () using one or more input parameters () and transmits the token (). The one or more input parameters () include at least some part of the capability enquiry () and/or at least some of the capability information (). In some embodiments, the token () is generated or transmitted based on a non-access stratum security context () at the wireless device (). The wireless device () also transmits the capability information () over the access stratum ().

Protecting capability information transfer in a wireless communication network

Techniques for enhancing performance in Industrial Internet-of-Things (IIoT) scenarios, including techniques for time-sensitive networking (TSN) and 5G wireless network integration. An example method, performed by a wireless device, comprises receiving system information (SI) from a radio base station (RBS) of a radio access network (RAN), the SI being indicative of support for TSN through the RBS, and establishing at least one TSN stream with an external data network, through the RBS. The example method further includes receiving a first timing signal from the wireless communications network, via the RBS, receiving a second timing signal from the external TSN data network to which the wireless device is connected, comparing the first timing signal to the second timing signal to determine an offset, and transmitting the offset to the wireless communications network.

Industrial automation with 5G and beyond

Embodiments include methods performed by a radio access network (RAN) node of a wireless communication system. Such methods include receiving, from a wireless device via a cell, a request to resume an RRC connected state with the wireless communication network. The request includes a cause indicator that indicates mobility signaling as a cause for resuming the RRC connected state. Such methods include, based on the cause indicator, requesting an access and mobility management function (AMF) of the wireless communication system to perform a tracking area update (TAU) for the wireless device. Such methods include receiving from the AMF an indication that the TAU for the wireless device is complete and in response to the received indication, initiating an access-stratum (AS) procedure for the wireless device. Other embodiments include complementary methods for AMFs as well as RAN node and AMFs configured to perform such methods.

Indicating RAN notification area update (RNAU) in RRC_INACTIVE state

A method performed by a User Equipment, UE, is provided. The UE receives (s) a first message comprising a group identifier, ID, allocated for a particular multicast-broadcast services, MBS, session. While camping on radio access network, RAN, node that does not support MBS services and while being in a radio resource control, RRC, state other than RRC_CONNECTED, the UE receives (s) from the RAN node a paging message. The UE determines (s) whether the paging message comprises the group ID.

User equipment, network node and methods therein

A method for securing radio connections comprises performing a connection setup with a user equipment (UE); determine that security information is needed for the UE based on an event which triggers a need of the security information; send an indication to a second network node to request the security information for the UE; and receiving the security information from the network node via a UE context setup procedure. The method may avoid a waste of resource in network by determining whether the UE is required to set up a security procedure by either a network node of a radio access network or a management and function node of a core network.

Method, apparatus, and system for securing radio connections

A method performed by a source access node for performing data forwarding at handover of a UE from a source cell to a target cell in a wireless communications network is provided. When a criterion for data forwarding is fulfilled, the source access node obtains a trigger for downlink data forwarding. When receiving the trigger, the source access node initiates downlink data forwarding to the UE via the target access node.

Access node, user equipment and methods in a wireless communications network

A method performed by a transmitting device, in a 3GPP wireless communicationsystem (), for handling generalized Precise Timing Protocol (gPTP) signaling, from a Time Sensitive Network (TSN) is provided. The transmitting device receives () a gPTP frame from the TSN network. The gPTP frame comprises time information, an indication of a time domain related to the time information and/or a Medium Access Control (MAC) address of a second end station connected to a receiving device. Basedon the indication of the time domain and/or the MAC address, the transmitting device determines () the receiving device which the gPTP frame relates to. The transmitting device transmits (), to the determined receiving device, the gPTP frame in a PDU session related to the determined receiving device.

Devices and methods for handling precise timing protocol frames

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

A method performed by a first network node for handling a connection between a wireless device and a wireless communications network. The wireless communications network comprises the first network node. The first network node stores () data related to the connection, and further stores an identifier of the wireless device for locating the stored data related to the connection later. The first network node further provides () the wireless device with a command to transition from a connected mode into a suspended mode, in which suspended mode the connection is suspended and the wireless device stores the data related to the connection, and further stores the identifier of the wireless device for locating the stored data later in order to resume the connection.

Network nodes, a user equipment and methods therein for handling a connection between the user equipment and a wireless communications network

Systems and methods for session continuity of Multicast Broadcast (MB) Sessions are provided. In some embodiments, a method performed by a base station for session continuity of MB Sessions includes at least one of: providing at least one MB Session to a wireless device connected in 5G; determining that the wireless device is handed over to a target Next Generation Radio Access Network (NG-RAN); and providing session continuity of the at least one MB Session to the wireless device. In some embodiments, being handed over to the target NG-RAN comprises an Xn handover. In some embodiments, being handed over to the target NG-RAN comprises a N2 handover. Some embodiments of the current disclosure provide support for Multicast Broadcast Session continuity (aka 'Handover') at Inter-gNB Xn Handover and Inter-gNB N2 Handover in the 5G NR radio access.

5G multicast broadcast service handover

Systems and methods related to core network and radio access network (RAN) interactions for a Multicast/Broadcast (MB) session are disclosed herein. In one embodiment, a method performed by an Access and Mobility Management Function (AMF) for a MB session join procedure includes receiving a MB session join request from a User Equipment (UE) via a RAN node, the MB session join request being a request to join a particular MB session. The method further includes determining that the MB session join request is permitted by a subscription of the UE, selecting a MB Session Management Function (MB-SMF) based on information included in the MB session join request, communicating with the MB-SMF to create a MB session context in the AMF and an MB session context in the MB-SMF, and sending a MB session join accept message to the UE.

RAN-5GC interactions for session join, session start, session leave, session stop, and session delete for 5G multicast broadcast services

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 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

Growing community of inventors

Ljungsbro, Sweden

Paul Schliwa-Bertling