Telefonaktiebolaget Lm Ericsson (publ)

Idtp Holdings, Inc.

Optis Wireless Technology, LLC

Optis Cellular Technology, LLC

Guangdong Oppo Mobile Telecommunications Corp., Ltd.

Lenovo (beijing) Limited

St-ericsson Sa

Velos Media, LLC

Blackberry Corporation

Unwired Planet International Limited

Muhammad Ali Kazmi

Iana Siomina

Santhan Thangarasa

Imadur Rahman

Joakim Axmon

Gabor Fodor

Christopher Peter Callender

Bengt Lindoff

Christian Bergljung

Walter Müller

Ali Behravan

Robert Baldemair

Icaro L J Da Silva

Mattias Bergström

Johan Mikael Bergman

Dirk Gerstenberger

Gary Boudreau

SaiRamesh Nammi

Daniel Chen Larsson

Jinhua Liu

Helka-Liina Määttanen

Torgny Palenius

Stefan Parkvall

Qingyu Miao

Shaohua Li

Mattias Frenne

Stefano Sorrentino

Konstantinos Dimou

David Astely

Gunnar Mildh

Stefan Wager

Mårten Sundberg

Anders Furuskär

Magnus Stattin

Arne Simonsson

Laetitia Falconetti

Havish Koorapaty

George Jöngren

Rui Fan

Sorour Falahati

Oumer Teyeb

Angelo Centonza

Zhang Zhang

Lars Lindbom

Olof Liberg

Lei Wan

Marco Belleschi

Anders Wallén

Yi-Pin Eric Wang

Robert Mark Harrison

Henning Wiemann

Torbjörn Wigren

Yu Yang

Yutao Sui

Elena Myhre

Erik A Eriksson

Dennis Hui

Min Wang

Bo Göransson

Claes Tidestav

Jan Christoffersson

Hai Feng Wang

Peter Alriksson

Johan Nilsson

Mats Folke

Yang Hu

Magnus Åström

Zhenhua Zou

Mikael Prytz

Gerardo Agni Medina Acosta

Jung-Fu Cheng

Johan Rune

Yufei W Blankenship

Andres Reial

Jari Tapio Vikberg

Stephen J Grant

Johan Torsner

Janne Peisa

Joachim Sachs

Kumar Balachandran

Xinghua Song

Gen Li

Jonas Fröberg Olsson

Niklas Johansson

Zhan Zhang

Riikka Susitaival

Gustav Wikström

Niklas Andgart

Ali Nader

Per Skillermark

Prajwol Kumar Nakarmi

Henrik Enbuske

Jonas Kronander

Ritesh Shreevastav

Oscar Ohlsson

Harald Kallin

Douglas Allan Cairns

Sina Maleki

András Rácz

Systems and methods for User Equipment (UE) operation in presence of Clear Channel Assessment (CCA) are provided. In some embodiments, a method performed by a wireless device for cell selection accounting for requirements includes: determining a measurement period in a serving cell for the cell selection or cell re-selection (T1), wherein the measurement period is determined based on a number of consecutive Discontinuous Reception (DRX) cycles; determining a number of measurement occasions configured with a Discovery Reference Signal (DRS) in the serving cell during T1; determining availability of the DRS at the measurement occasions; and performing measurement based on availability of the DRS at the measurement occasions during T1. In this way, a wireless device may operate in NR RRC_IDLE/RRC_INACTIVE in the presence of CCA, e.g., Listen-Before-Talk (LBT).

Systems and methods for UE operation in presence of CCA

According to certain embodiments, a method for use in a first node comprises receiving a first resolution factor (k) from a second node, adapting the first resolution factor (k) to obtain a second resolution factor (k'), and reporting a measurement to the second node according to the second resolution factor (k′).

Methods for efficient RSTD measurement reporting in NR

A method and system are disclosed for a network node or wireless device (WD) to communicate with another WD or network node. The node or WD is configured to perform at least one timing measurement over a measurement period (T) on signals transmitted between the node or WD and another node or WD and, during T, determine if there is any change in a fixed time offset (FTO) used by the nodes for transmitting a reference signal. If there is a change in the FTO over T, the network nodes or WDs are configured to perform an operational task and, if not, continue performing the timing measurement over T. The operational tasks may include discarding the timing measurement, restarting the timing measurement, extending the measurement time, informing another node about a change in the FTO or informing another node about an action taken by the network node or WD.

Positioning timing measurement procedure under timing offset change

A wireless device () 'relaxes' the radio-signal measurements it makes with respect to a wireless communication network (), in the context of using those measurements to determine whether a current Timing Advance, TA, value remains valid for use in transmitting on preconfigured uplink resources, PUR, of the wireless communication network (). Relaxation refers to the length of the interval between making new measurements. According to techniques herein, the wireless device () operates according to an imposed limit on the extent or degree of relaxation, to ensure or at least improve the reliability of the radio measurements with respect to validation of the TA value. Determination of the extent of relaxation occurs at the wireless device () or at a supporting network node () of the wireless communication network ().

Method and apparatus for controlling transmission on preconfigured uplink resources in a wireless communication network

A method performed by a Network Node (NN) for handling Device to Device (D2D) operation between a first D2D User Equipment (UE) and a second D2D UE in a radio communications network is provided. The NN obtains data related to propagation delay in one or more cells served by the NN. The propagation delay is related to any one or more out of: the first D2D UE, the second D2D UE, other D2D UEs, and cellular UEs. The NN then determines whether or not to configure a number of Guard Period (GP) symbols within a switching time resource, as Sidelink (SL) radio resources for the D2D operation. The determining is based on one or more criteria applied to the obtained data related to the propagation delay.

Network node, device to device user equipment, and methods in a radio communications network

Methods performed by a wireless device and a base station for adapting maximum allowed Clear Channel Assessment (CCA) based on operational occasion periodicity are provided. In examples disclosed herein, a wireless device is configured to determine an operational occasion periodicity of a signal that is subject to CCA. Accordingly, the wireless device can determine an association at least between the determined operational occasion periodicity and a maximum number of allowed CCA failures for communicating the signal. The wireless device can then perform one or more operational tasks based on the determined maximum number of allowed CCA failures. By determining the maximum number of allowed CCA failures, the wireless device can obtain information about downlink CCA failures and use the obtained information for adapting measurements procedures in serving cell operational tasks.

Adapting maximum allowed CCA failures based on single occasion periodicity

A wireless device is configured for use in a wireless communication network. The wireless device obtains a configuration that governs how the wireless device is to monitor for and/or attempt to recover from consistent uplink listen-before-talk (LBT) failure that occurs during a mobility procedure triggered by the wireless device. According to the obtained configuration, the wireless device monitors for and/or attempts to recover from consistent uplink LBT failure occurring during the mobility procedure.

Listen-before-talk failure in a wireless communication network

Systems and methods for validating one or more parameters are provided. In some embodiments, a method performed by a wireless device for validating parameters includes: obtaining information about measurement change for validating one or more parameters; obtaining information about a number of thresholds and associated thresholds used for validating the one or more parameters; and performing parameter validation based on the obtained information. In some embodiments, this is for a Timing Advance (TA) parameter for a Preconfigured Uplink Resources (PUR) transmission. In this way, TA validation becomes more reliable as the validation range can be adapted to the wireless device mobility.

Systems and methods for validating parameters

Systems and methods for controlling Sounding Reference Signal (SRS) carrier-based switching impact are disclosed. In some embodiments, a method performed by a wireless device for controlling SRS switching impact comprises determining that there is a SRS carrier-based switching from a first carrier on which a first serving cell of the wireless device operates to a second carrier on which a second serving cell of the wireless device operates. The method further comprises determining an amount of impact that the SRS carrier-based switching has on one or more serving cells of the wireless device and utilizing the amount of impact that the SRS carrier-based switching has on the one or more serving cells of the wireless device. Corresponding embodiments of a wireless device are also disclosed. Embodiments of a method performed by abase station and corresponding embodiments of a base station are also disclosed.

Systems and methods for SRS switching impact control

Method for a user equipment, UE), to communicate with a wireless network via multiple cells. The method includes detecting () failure of a first beam associated with a first cell of the plurality of cells and determining () availability or unavailability of other beams, than the first beam, that are associated with the first cell. The method further includes transmitting (), to one of the multiple cells, a message indicating availability or unavailability of the other beams associated with the first cell. The message is transmitted within a first duration () after detecting the failure of the first beam, the first duration based on a maximum time for determining availability of the other beams and on a periodicity of resources allocated for beam failure reporting in the cell where the message is transmitted. Other embodiments include complementary method for a network node, UE and network node configured to perform such method.

Beam failure recovery in multi-cell configuration

Systems and methods for providing power savings at a wireless communications device in coordination with early measurement reporting are disclosed. In one embodiment, a method performed by a wireless communication device comprises obtaining first information for determining whether the wireless communication device meets criteria for entering into one or more relaxed measurement modes and obtaining second information about whether the wireless communication device is configured with early measurement reporting. The method further comprises selecting a measurement mode from a set of measurement modes comprising the one or more relaxed measurement modes and a normal measurement mode. In one embodiment, selecting the measurement mode comprises determining, based on the first information, whether the wireless communication device meets the criteria for entering into the one or more relaxed measurement modes and selecting one of the set of measurement modes based on upon results of the determining and based on the second information.

UE power saving mechanism under early measurement reporting

The invention relates to a method in a user equipment, UE, for performing handover to a target cell in a wireless network, the method comprising performing () a first random-access, RA, procedure in first RA resources of the target cell, in response to failure of the first RA procedure, refraining () from declaring a radio link failure, RLF, for the target cell and performing a second RA procedure in second RA resources of the target cell that are different from the first RA resources; and declaring () a RLF for the target cell based on failure of the first RA procedure and a failure of the second RA procedure, or an expiration of a timer before successful completion of the second RA procedure; the invention further relates to a UE implementing the method, to a corresponding method in a network node and a network node implementing the method.

Handling of uplink listen-before-talk failures for handover

A method, system and apparatus for semi-persistent channel state information (CSI) reporting procedures with uplink (UL) clear channel assessment (CCA) are disclosed. According to one aspect, a method includes receiving a signal indicating activation or deactivation of semi-persistent channel state information (CSI) reporting and responsive to receiving the signal, attempt to transmit a Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK), the attempt being subject to success or failure of a clear channel assessment (CCA). When the CCA fails and when the signal indicates activation, the method includes refraining from CSI measurement and reporting unless CCA subsequently succeeds before expiry of a time interval. When the CCA fails and when the signal indicates deactivation, the method includes continuing CSI measurement but refraining from CSI reporting unless CCA subsequently succeeds before expiry of a time interval.

Semi-persistent channel state information reporting procedure with uplink clear channel assessment

Methods, a first, and a second network node as well as a user equipment for exchange of measurement period related parameters are provided. The user equipment performs a method for measuring a measurement quantity of a secondary cell on a second carrier operated by a second radio network node. The user equipment receives, from the second radio network node, an indication indicative of the second carrier and a first parameter indicating a measurement period for measuring the measurement quantity of the secondary cell. The user equipment measures said measurement quantity on the secondary cell on the second carrier over the measurement period. The measurement period is a predefined value times the first parameter.

Exchange of parameters relating to measurement periods

One embodiment provides a method performed by a wireless device. The method comprises: receiving, from a network node, a configuration message comprising an indication of preconfigured radio resources for uplink transmissions; obtaining a synchronization status of the wireless device with respect to the network node; and adapting use of the preconfigured radio resources based on the synchronization status of the wireless device with respect to the network node.

Methods, apparatus and computer-readable mediums relating to uplink transmissions

Growing community of inventors

Sundbyberg, Sweden

Muhammad Ali Kazmi