Telefonaktiebolaget Lm Ericsson (publ)

Icaro L J Da Silva

Gunnar Mildh

Johan Rune

Pradeepa Ramachandra

Helka-Liina Määttanen

Patrik Rugeland

Andres Reial

Claes Tidestav

Henrik Sahlin

Jose Luis Pradas

Rui Fan

Janne Peisa

Reza Moosavi

Oumer Teyeb

Jari Tapio Vikberg

Fredrik Gunnarsson

Pontus Wallentin

Iana Siomina

Muhammad Ali Kazmi

Magnus Stattin

Osman Nuri Can Yilmaz

Pål Frenger

Stefan Wager

Karl Norrman

Angelo Centonza

Johan Axnäs

Henning Wiemann

Robert Baldemair

Dennis Hui

Kumar Balachandran

Bengt Lindoff

Qingyu Miao

Zhang Zhang

Torgny Palenius

Paul Schliwa-Bertling

Erik A Eriksson

Joakim Axmon

Walter Müller

Jianfeng Wang

Oscar Ohlsson

Stefan Parkvall

Jinhua Liu

Yi-Pin Eric Wang

Erik Bengt Dahlman

Martin Hessler

Sven Oscar Petersson

Qianxi Lu

Johan Torsner

Fredrik Athley

Gabor Fodor

Joachim Sachs

Ali S Khayrallah

Gen Li

Thorsten Lohmar

Bo Hagerman

Lars Lindbom

Niclas Wiberg

Jonas Fröberg Olsson

Johan Furuskog

Niklas Johansson

Hai Feng Wang

Zhan Zhang

Peter Alriksson

Lars Sundström

Andreas Bergström

Henrik Asplund

Martin Johansson

Karl Werner

Mårten Ericson

Mikael Coldrey

Patrik Torgny Karlsson

Jonas Kronander

Shehzad Ali Ashraf

Fredrik Lindqvist

Dennis Sundman

Ning He

Yu Wang

Håkan Axelsson

Mikael Prytz

Christopher Peter Callender

Anders Furuskär

Christofer Lindheimer

Håkan Björkegren

Mattias Bergström

Filip Mestanov

Riikka Susitaival

Jens Bergqvist

Johan Nilsson

Jan Christoffersson

Bo Lincoln

Ali Nader

Anders Wallén

Mats Folke

Asbjörn Grövlen

Stefan Engström

Sorour Falahati

Konstantinos Dimou

Nicklas Johansson

Prajwol Kumar Nakarmi

A method performed by a User Equipment (UE) for handling a Conditional Handover (CHO) from a first cell to a second cell in a wireless communications network. The UE is served by a Master Node (MN), in the first cell and by a Secondary Node (SN) in a third cell. The UE receives a CHO configuration from the first network node acting as the MN. The CHO configuration includes an indication to release configurations of any one or more out of: Multi Radio Access Technology Dual Connectivity (MR-DC), and SN terminated bearers. Upon execution of the CHO according to the CHO configuration, the UE releases the MR-DC configuration and/or a configuration for SN terminated bearers.

CHO in DC (dual connectivity)

A method performed by a first network node for assisting a second network node in resuming of a User Equipment, UE, in inactive state into connected state in a Radio Access Network, RAN. The first network node obtains () a Local RAN Node Identifier associated with a Public Land Mobile Network, PLMN, RAN Node ID, identifying the first network node. The first network node sends () the Local RAN node Identifier and associated PLMN RAN Node ID to be obtainable by the second network node. The first network node suspends () the UE from connected state into inactive state and sends an identifier to the UE. The identifier comprises a UE Context ID and the associated Local RAN Node Identifier. The UE Context ID identifies the UE context associated with the UE. The UE Context ID, Local RAN Node Identifier and associated PLMN RAN Node ID will assist the second network node to obtain the UE Context for the resuming of the UE into connected state, wherein a connection is to be provided by the second network node.

Network nodes and methods in a radio access network for improving the RRC resume procedure

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 wireless device for measurement reporting comprises receiving a conditional handover (CHO) configuration comprising one or more CHO candidate cells and associated triggering conditions; generating a measurement report comprising measurement information for the one or more CHO candidate cells; and transmitting the measurement report to a network node.

Measurement reporting for conditional handover candidates

A method for avoiding unnecessary actions in a connection establishment comprises sending a request to a network node to initiate the connection establishment, upon sending the request to the network node, starting a timer for the connection establishment, wherein an expiration of the timer stops the connection establishment for a user equipment (UE), and stopping the timer to stop the connection establishment upon the UE receiving a suspend message or a release message, or upon the UE performing a cell reselection procedure while the timer is running. The timer may prevent the UE from waiting the connection establishment to be completed if there is an error or bad transmission in the connection establishment. Furthermore, the timer to stop the connection establishment may avoid unnecessary actions and inform other layers in the network when the timer expires to stop the connection establishment.

Method for avoiding unnecessary actions in resume procedure

Methods and apparatus in a fifth-generation wireless communications, including an example method, in a wireless device, that includes receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predetermined plurality of uplink access configurations, and transmitting to the wireless communications network according to the identified uplink access configuration. The example method further includes, in the same wireless device, receiving, in a first subframe, a first Orthogonal Frequency-Division Multiplexing (OFDM) transmission formatted according to a first numerology and receiving, in a second subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology. Variants of this method, corresponding apparatuses, and corresponding network-side methods and apparatuses are also disclosed.

Network architecture, methods, and devices for a wireless communications network

The invention refers to a wireless device and to operating the wireless terminal, UE, connected to a serving network node associated to a serving cell of a radio access network, RAN, the method comprising: receiving system information from a neighbour cell of the serving cell, determining from the system information if the neighbour cell does or does not broadcast a global cell identifier, CGI, of the neighbour cell; and if the neighbour cell does not broadcast the CGI, transmitting a global cell identifier, CGI, report to the serving network node, wherein the CGI report includes an indication that the neighbour cell does not broadcast the CGI of the neighbour cell. The invention further refers to a corresponding network node and to a method performed in the network node.

Cell global identity reporting

According to some embodiments, a method performed by a wireless device capable of operating in dual connectivity with a first network node in a master cell group (MCG) and a second network node in a secondary cell group (SCG) comprises receiving a connection configuration message from the first network node. The message includes parameters for setup or modification of the SCG. The method further comprises: storing parameters for synchronization or random access with the second network node; operating in dual connectivity with the first and second network nodes; storing configuration information about the second network node received via system information; receiving a connection release message from the first network node; receiving a connection resume message from the first network node; determining the message does not include a new or modified configuration for the SCG; and performing synchronization and random access with the second network node using the stored parameters.

Synchronization and random access during connection resume

According to certain embodiments, a target network node for communicating with a user equipment (UE) that was previously in communication with a source network node, comprises an interface operably coupled to processing circuitry. The interface is configured to receive a connection resume request from the user equipment, wherein the connection resume request comprises a resume identification associated with the source network node. The processing circuitry is configured to determine that the UE was previously in communication with the source network node. The interface is further configured to transmit the connection resume request to the source network node, receive a radio resource control (RRC) response from the source network node, and forward the RRC response to the UE.

Radio resource control resume without context fetch

A wireless device () receives a control message () that indicates a nested conditional configuration (). The nested conditional configuration () includes an outer conditional configuration (-) and an inner conditional configuration (-). The wireless device () is to apply the outer conditional configuration (-) if the wireless device () detects fulfillment of an outer trigger condition. The wireless device () is to apply the inner conditional configuration (-) if the wireless device () detects fulfillment of both the outer trigger condition and an inner trigger condition.

Conditional configuration in a wireless communication network

Embodiments include methods performed by a user equipment (UE), for managing the UE's secondary serving cells (SCells) in a wireless network. Such methods include receiving, from a first network node, a message to suspend a connection with the first network node. The connection is via a plurality of configured cells including a primary serving cell (PCell) and one or more SCells, which have respective first SCell states. Such methods also include suspending the connection in response to the suspend message. Such methods also include receiving, from the first network node or a second network node, a message to resume the connection. The resume message includes indication of indication of second SCell states for one or more of the following: the one or more SCells, and one or more further SCells to be added to the configured cells more SCells, and one or more further SCells to be added to the configured cells upon resuming the connection. Embodiments also include complementary methods performed by a wireless network.

Methods and apparatus for managing SCell state during UE suspend/resume

A method is performed by a wireless device (). The method comprises detecting a failure associated with a cell group in multi-connectivity operation. The method also comprises, responsive to detecting the failure, suspending monitoring of one or more trigger conditions whose fulfillment is to trigger execution of a conditional configuration () stored at the wireless device ().

Handling of stored conditional configuration in a wireless communication network

Systems and methods are disclosed herein relating to wireless device behavior after rejection of a resume request triggered by a Radio Access Network (RAN) based Notification Area Update (RNAU) or upon cell reselection during resume. In some embodiments, a method of operation of a wireless device comprises transmitting, to a RAN node, a Radio Resource Control (RRC) resume request triggered by an RNAU and receiving, from the RAN node, an RRC resume reject message comprising a wait timer value in response to the RRC resume request. The method further comprises starting a wait timer initialized with the wait timer value and sending the RNAU when the wait timer has expired. Corresponding embodiments of a wireless device are also disclosed. Embodiments of a wireless device and methods of operation thereof related to the behavior of the wireless device upon performing a cell reselection during resume are also disclosed.

UE behavior with rejection of resume request

A method for random access for beam failure recovery. In the method, a random access configuration for the beam failure recovery is received. In the event of a beam failure, a random access procedure is performed according to the random access configuration.

Method and device for random access for beam failure recovery

A radio network node, a wireless device and methods performed therein for handling communication in a wireless communication network are provided. The method performed by the wireless device comprises obtaining an indication indicating which beams to be included in a cell quality derivation of a cell; and performing one or more measurements on one or more beams, which one or more beams are selected based on the obtained indication. Furthermore, a computer program product and a computer readable storage medium are also provided herein.

Radio network node, wireless device and methods performed therein

Growing community of inventors

Solna, Sweden

Icaro L J Da Silva