Telefonaktiebolaget Lm Ericsson (publ)

Unwired Planet, LLC

Optis Cellular Technology, LLC

Arne Simonsson

Peter Ökvist

Anders Furuskär

Bo Hagerman

Henrik Asplund

Sara Sandberg

Jonas Fröberg Olsson

Muhammad Ali Kazmi

Fredrik Athley

Per Skillermark

Jonas Medbo

Stefano Sorrentino

Konstantinos Dimou

David Astely

Stefan Parkvall

Bengt Lindoff

Jung-Fu Cheng

Magnus Thurfjell

Per Burström

Peter De Bruin

Jonas Pettersson

Sara Landström

Kjell Larsson

Anders Landström

Walter Müller

Martin Johansson

Harald Kallin

Christian Hoymann

Magnus K Almgren

Magnus Lundevall

Anders Furuskar

Olle Rosin

Fredrik Gunnarsson

Erik A Eriksson

George Jöngren

Shiwei Gao

Sebastian Faxér

Sven Oscar Petersson

Jan Christoffersson

Stefan Rommer

Laetitia Falconetti

Mårten Ericson

Mikael Prytz

András Rácz

Peter Moberg

Per Magnusson

Walter Muller

Jessica Östergaard

Johan Söder

Bogdan Timus

Yuri C B Silva

Elvis M G Stancanelli

Martin Alm

Mattias Frenne

Johan Rune

Erik Bengt Dahlman

Henrik Sahlin

Andreas Nilsson

Dennis Hui

Gabor Fodor

Janne Peisa

Joachim Sachs

Niclas Wiberg

Stefan Wänstedt

Niklas Wernersson

Qiang Zhang

Patrik Torgny Karlsson

Tommy Arngren

Jörg Huschke

Rong Hu

Magnus Lindström

Robert Petersen

Kristina Jersenius

Anders Derneryd

Kimmo Juhani Hiltunen

Tomas Jönsson

Anders Johansson

Gunnar Bark

Joakim Bergström

Norbert Reider

Bo Goransson

Kristofer Sandlund

Benny Lennartson

Christina Larsson

Nima Seifi

Marten Ericson

Per Burstrom

Paul Mihkel Teder

Mathias Riback

Angelo Cuffaro

Francisco Rodrigo Porto Cavalcanti

Christer Johansson

Tor Björn Minde

Michel Desgagne

Peter Okvist

Peter Nauclér

Aare Mällo

Rodrigo Lopes Batista

Sara Landstrom

Paulo G Normando

Mechanisms for selecting TDD patterns for DL and UL communication in TDD slots on CCs in a cell. A method is performed by a network management node. The method includes performing selection of the TDD patterns for DL and UL communication on CCs in the cell. According to the selection of the TDD patterns, at least one of the CCs is configured with a first TDD pattern, and at least one of the CCs is configured with a second TDD pattern. There is a higher fraction of DL TDD slots in the first TDD pattern than in the second TDD pattern.

Selection of TDD patterns for DL and UL communication

There is presented a method for a network node for reducing interference in a wireless device (), the wireless device operating using a time division0duplex. TDD, configuration in a cell, from at least another wireless device operating in a neighbouring cell using another TDD configuration. The TDD configuration is divided into different time units for at least downlink, DL, and uplink. UL, transmission. The method includes assigning time units in the TDD configuration to one of at least two time unit groups, where the assignment of a time unit to a time unit group is based the interference from the neighboring cell using the another TDD configuration. The method further includes using different link adaptions for the at least two time unit groups. The is also presented a network node.

Method and network node for interference mitigation for TDD UL/DL configuration

A network node and a method for transmitting a Transmission Configuration Indication, TCI, update to a UE. The network node associates a first transmit beam with a first reference signal having first Quasi Co-Location, QCL, channel properties. The first transmit beam gives the same first QCL channel properties and is used in data transmission to the UE. Further, the network node determines second QCL channel properties given by a second transmit beam when a beam change is triggered. When the second QCL channel properties is within a QCL channel property range of a second reference signal and when the second reference signal has third QCL channel properties being different from the first QCL channel properties, the network node associates the second transmit beam with the second reference signal, and transmits, to the UE, a TCI update having an indication of the second reference signal.

Radio network node and methods therein for transmitting a transmission configuration indication (TCI) update to a wireless device

A method for operating a cell, performed by a network node. The method includes transmitting a frame comprising a set of slots receiving Channel State Information, CSI, reports at least indicative of interference measured by a user equipment using the set of slots, estimating a transmission direction pattern of an adjacent cell relative a transmission direction pattern of the cell based on the received CSI reports, and transmitting a signal to the user equipment based on the estimated transmission direction pattern of the adjacent cell.

Slot-based CSI report configuration for dynamic TDD

There is provided mechanisms for beam management. A method is performed by a radio transceiver device. The method comprises obtaining an angle spread value for signal paths towards a second radio transceiver device. The method comprises performing a beam management procedure for selecting which directional beam to use for communication with the second radio transceiver device by transmitting or receiving reference signals in a candidate set of directional beams. Which directional beams to include in the candidate set of directional beams is dependent on the angle spread value by the angle spread value determining sparsity of the directional beams in the candidate set of directional beams.

Beam management for a radio transceiver device

The present disclosure relates to a method performed by a network node for beamforming, to a network node and to a system including a network node. One aspect of the disclosure provides a method () comprising: obtaining (), at the network node (), information relating to a plurality of signals received or transmitted using a set of receiving beams or a set of transmitting beams of the network node (), each individual beam of the set having a unique beam direction; determining a set of candidate beams for use by the network node () for synchronisation signal, SS, transmission or random access channel, RACH, detection; based on the obtained information, selecting one or more of the determined candidate beams; and using the selected one or more of the determined candidate beams for SS transmission or RACH detection by the network node ().

Beamforming for random access channel (RACH)

Method performed by a first node () for managing a movement of a radio antenna (). The first node () operates in a wireless communications network (). The first node () determines () whether the movement of the radio antenna () is above a threshold over a time period. The radio antenna () is connected to a second node () operating in the wireless communications network (). The movement is with respect to at least one wireless device () operating in the wireless communications network (). The determining () is based on an analysis of one or more properties of radio transmissions to or from the radio antenna () over the time period. The first node () initiates () providing a message to one of: the second node () and a third node () operating in the wireless communications network (). The initiation is based on a result of the determination.

First node, third node, and methods thereby, for managing a movement of a radio antenna

Mechanisms for selecting beam direction for a radio communications device are provided. A method is performed by the radio communications device. The method includes obtaining radio channel estimates of a radio channel on which radio waves have been transmitted between the radio communications device and another radio communications device at an angle of arrival and departure. The method includes determining a Doppler shift from the radio channel estimates. The method includes estimating at least one of the angle of arrival and departure of the radio waves based on the Doppler shift. The method includes selecting a beam direction for a signal to be transmitted between the radio communications device and this another radio communications device over the radio channel according to the estimated angle of arrival or departure.

Beam direction selection for a radio communications device

In SIB2 there is an entry containing information on PUSCH power control parameters. The current signaling entity is extended with entries that are dependent on UE operational altitude. For example, an altitude-dependent factor for the alpha parameter, or one parameter range for zero (ground level, default as per of today), one parameter range for intermediate altitude operation, and one entry for high-altitude operations, so that an airborne UE can select its appropriate power control parameters.

Altitude dependent uplink power control

A method performed by a first radio node for selecting a transmission rank is provided. The radio node is capable of using at least a first antenna beam and a second antenna beam for communication with a second radio node in a wireless communication network. The radio node communicates with the second radio node by using the first antenna beam and a first transmission rank. The radio node obtains second radio parameters for the second antenna beam. The radio node then selects a second transmission rank based on the obtained second radio parameters. The second transmission rank is to be used for communication with the second radio node in the second beam. The selection of the second transmission rank is triggered before obtaining any Rank Indicator (RI) for the second antenna beam.

Selecting a transmission rank in a multiple beam antenna system

There is provided mechanisms for assigning beams to terminal devices in a communications network. A method is performed by a network node. The method comprises determining an initial set of beams for serving the terminal devices, whereby each terminal device is assigned at least one of the beams. The method comprises obtaining an indication that further beams, in addition to those in the initial set of beams, are available for serving the terminal devices. The method comprises evaluating whether to expand the initial set of beams with the further beams or not, whereby the further beams are assigned to the terminal devices according to a criterion, until a resource utilization threshold is reached.

Beam assignment in a communications network

Mechanisms for determining directional beamforming weights are disclosed. A method performed by a radio transceiver device includes obtaining, from measurements on reference signals, channel estimates per antenna port and frequency. The channel estimates are indicative of power delay values per antenna port towards another radio transceiver device. The method includes determining modified channel estimates per antenna port and frequency with the power delay values outside a threshold delay window being suppressed. The method includes determining directional beamforming weights for beam-formed transmission towards said another radio transceiver device based on the modified channel estimates per antenna port and frequency.

Determination of directional beamforming weights

A method performed by a first communication device operating in a wireless communications network. The first communication device obtains a set of correspondences associating: i) each set (&#x3c9;) of a plurality of sets of antenna weights (&#x3c9;. . . &#x3c9;) having been sent by a third communication device in response to having received a respective set (RSs) of a plurality of sets of radio signals (RSs. . . RSs) from a set of antenna ports in a second communication device, with ii) a respective direction of transmission (d) between the second communication device and the third communication device. The respective direction is relative to an orientation (&#x3b1;) of the second communication device. The respective direction of transmission (d) is a selected direction of transmission (d). The first communication device then initiates transmission of a new radio signal, based on the obtained set of correspondences.

First communication device and methods thereby for initiating transmission based on an obtained set of correspondences

There is provided mechanisms for configuring resources for downlink CSI measurements. A method is performed by a network node. The method comprises configuring, within a radio frame, the resources for downlink CSI measurements. The resources for downlink CSI measurements comprise at least two resources for interference measurements and at least one resource for channel measurements. Each resource for interference measurement is configured in its own slot within the radio frame. The method comprises transmitting configuration information. The configuration information specifies slot locations of the at least two resources for interference measurement and the at least one resource for channel measurement within the radio frame. The method comprises transmitting, within the radio frame, a reference signal in the at least one resource for channel measurements.

Configuration of resources for downlink CSI measurements

A method performed by a radio node for increasing a throughput of a MIMO channel. The radio node operates in a wireless communication network. The beams are beamformed at a transmitter of the radio node. The beams comprise: A first beam comprising a first beam gain in a first direction, and at least one second beam wherein each at least one second beam comprises a respective second beam gain in a respective second direction. When decided that the signal strength on the first beam is a first threshold stronger than the signal strength on each respective at least one second beam, and the signal strength on the at least one second beam is above a second threshold, the radio node increasing the throughput of the MIMO channel by suppressing () the first beam with respect to its beam gain.

Radio node and methods in a wireless communications network

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Gammelstad, Sweden

Arne Simonsson