Telefonaktiebolaget Lm Ericsson (publ)

Unwired Planet, LLC

Optis Cellular Technology, LLC

Henrik Asplund

Andreas Nilsson

Fredrik Athley

Bo Hagerman

Fredrik Gunnarsson

Andres Reial

Claes Tidestav

Bengt Lindoff

Sven Oscar Petersson

Kumar Balachandran

Robert Baldemair

Stefan Parkvall

Gunnar Mildh

Icaro L J Da Silva

Johan Rune

Jinhua Liu

Pål Frenger

Yi-Pin Eric Wang

Erik Bengt Dahlman

Jari Tapio Vikberg

Erik A Eriksson

Henrik Sahlin

Stefan Wager

Dennis Hui

Martin Hessler

Magnus Stattin

Walter Müller

Joakim Axmon

Karl Norrman

Qianxi Lu

Pradeepa Ramachandra

Qingyu Miao

Johan Torsner

Gabor Fodor

David Astely

Janne Peisa

Joachim Sachs

Ali S Khayrallah

Gen Li

Zhang Zhang

Thorsten Lohmar

Osman Nuri Can Yilmaz

Lars Sundström

Lars Lindbom

Torgny Palenius

Rui Fan

Bo Göransson

Cong Shi

George Jöngren

Xingqin Lin

Jonas Medbo

Mikael Coldrey

Niklas Jaldén

Martin Johansson

Karl Werner

Jonas Fröberg Olsson

Arne Simonsson

Niclas Wiberg

Anders Furuskär

Mårten Ericson

Yngve Selén

Johan Furuskog

Niklas Johansson

Jianfeng Wang

Hai Feng Wang

Andreas Bergström

Peter Alriksson

Zhan Zhang

Jose Luis Pradas

Pontus Wallentin

Patrik Rugeland

Johan Axnäs

Patrik Torgny Karlsson

Shehzad Ali Ashraf

Jonas Kronander

Reza Moosavi

Fredrik Lindqvist

Dennis Sundman

Ning He

Håkan Axelsson

Mikael Prytz

Nadia Brahmi

Andreas Cedergren

Ali El Essaili

Jörg Huschke

Elena Myhre

Hugo Tullberg

Emma Wittenmark

Håkan Björkegren

Edgar Ramos

Peter Ökvist

Fredrik Ovesjö

Anders Wallén

Johan Nilsson

Bo Lincoln

Niklas Wernersson

Sara Modarres Razavi

Harald Kallin

Svante Bergman

A method performed by a first node for adjusting channel coefficients of a wireless channel between the first node and a second node in a wireless communications network is provided. The first node obtains a calculated current correlation value between the first channel coefficients estimated in a first time instant, and the second channel coefficients estimated in a second time instant. The second time instant is subsequent to the first time instant. The first node obtains a previous correlation value calculated at a previous time instant. The first node determines a phase adjustment value based on an estimated phase difference to be applied to the estimated second channel coefficients associated with the wireless channel. The phase difference is estimated between the current correlation value and the previous correlation value.

Node and method for adjusting channel coefficients of a wireless channel

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

A method in a network node and a network is provided to determine line of sight, LOS, base stations for a user equipment (UE) is provided. A request is provided to at least one of the UE and a plurality of base stations to measure and report LOS detection measurements, wherein the plurality of base stations includes base stations of a serving cell of the UE. The LOS detection measurements are received from the at least one of the UE and the plurality of base stations. LOS base stations for the UE are determined based on the LOS detection measurements. An indication of the LOS base stations is transmitted to the UE.

Line of sight detection based on channel impulse response reported

Method and one or more first devices for supporting calibration of a multi-antenna array comprised in a first antenna device operative with a wireless communication network. The first device(s) provide phase correcting information, to be used in calibration of the multi-antenna array, based on covariances corresponding to recurrent displacement vectors of the multi-antenna array. Said covariances being based on channel estimates estimated from certain radio signals received after transmission over radio propagation channels between said multi-antenna array of the first antenna device and one or more second antenna devices operative with the wireless communication network.

Method and device(s) for supporting calibration of a multi-antenna array comprised in an antenna device operative with a wireless communication network

Methods and apparatus in a fifth-generation wireless communications network, including an example method, in a wireless device, that includes determining a reporting quality threshold for a parameter related to channel state information (CSI); performing a measurement for each of a plurality of beams from a first predetermined set of beams for evaluation; evaluating the measurement for each of the plurality of beams against the reporting quality threshold; discontinuing the performing and evaluating of measurements in response to determining that the reporting quality threshold is met for one of the beams, such that one or more beams in the first predetermined set of beams are not measured and evaluated; and reporting, to the wireless communications network, CSI for the one of the beams.

A method for acquiring an indication of a preferred beam of a wireless communication device is disclosed. The method is performed in a network node of a cellular communication network. The network node is adapted to support a plurality of beams of a signal beam-forming scheme and to communicate with the wireless communication device using at least one beam of the plurality of beams. A message indicative of the beam power setting is transmitted to the wireless communication device. Measurement signals are also transmitted. A report indicative of the preferred beam is received from the wireless communication device. The preferred beam is determined by the wireless communication device based on the measurement signals and the beam power setting. Corresponding methods for the wireless communication device, as well as corresponding arrangements, network node, wireless communication device, cellular communication network, and computer program products are also disclosed.

Determination of a preferred beam in a cellular communication network employing signal beam-forming

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)

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

Methods and apparatuses for determining a position of a wireless device in a wireless communication network are provided. The method includes obtaining a first sequence of Time Difference of Arrivals (TDOAs) at the wireless device of reference signals, which are transmitted by and used for synchronization of a first pair of network nodes; and determining, based on the first sequence of TDOAs, a first relative distance. The method also includes obtaining a second sequence of TDOAs at the wireless device of reference signals, which are transmitted by and used for synchronization of a second pair of network nodes; and determining, based on the first sequence of TDOAs, a second relative distance. The method further includes determining the position of the wireless device based on the first and second relative distances. Corresponding computer programs and computer program carriers are also disclosed.

Method, apparatus and system for determining a position of a wireless device

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

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Stockholm, Sweden

Henrik Asplund