Telefonaktiebolaget Lm Ericsson (publ)

Martin Johansson

Sven Oscar Petersson

Fredrik Athley

Henrik Asplund

Andreas Nilsson

Mikael Coldrey

Lars Manholm

Claes Tidestav

Bo Hagerman

Karl Werner

Niklas Jaldén

Robert Baldemair

Stefan Parkvall

Bengt Lindoff

Gunnar Mildh

Icaro L J Da Silva

Johan Rune

Fredrik Gunnarsson

Jinhua Liu

Pål Frenger

Yi-Pin Eric Wang

Erik Bengt Dahlman

Andres Reial

Jari Tapio Vikberg

Erik A Eriksson

Henrik Sahlin

Stefan Wager

Dennis Hui

Martin Hessler

Magnus Stattin

Walter Müller

Joakim Axmon

Karl Norrman

Qianxi Lu

Qingyu Miao

Pradeepa Ramachandra

Johan Torsner

Gabor Fodor

Janne Peisa

Kumar Balachandran

Joachim Sachs

Ali S Khayrallah

Gen Li

Thorsten Lohmar

Zhang Zhang

Lars Sundström

Osman Nuri Can Yilmaz

Lars Lindbom

Jonas Fröberg Olsson

Niclas Wiberg

Torgny Palenius

Johan Furuskog

Niklas Johansson

Jianfeng Wang

Hai Feng Wang

Andreas Bergström

Zhan Zhang

Peter Alriksson

Jose Luis Pradas

Pontus Wallentin

Patrik Rugeland

Mårten Ericson

Johan Axnäs

Patrik Torgny Karlsson

Jonas Kronander

Shehzad Ali Ashraf

Reza Moosavi

Fredrik Lindqvist

Yngve Selén

Dennis Sundman

Ning He

Mikael Prytz

Håkan Axelsson

Nadia Brahmi

Andreas Cedergren

Ali El Essaili

Jörg Huschke

Elena Myhre

Jonas Medbo

Emma Wittenmark

Hugo Tullberg

Virgile Garcia

Ulf Gustavsson

Thomas Walldeen

Ke Wang Helmersson

Peter Von Wrycza

Bengt-Erik Olsson

Eleftherios Karipidis

Simon Järmyr

Rui Fan

Anders Furuskär

Håkan Björkegren

Stefan Johansson

Edgar Ramos

Bo Göransson

Anders Wallén

Arne Simonsson

Johan Nilsson

Bo Lincoln

David Astely

A method performed in a network node of a communication system for muting antenna elements of an active antenna system. The method comprises determining, based on a priori information relating to performance of the communication system, an antenna element separation between one or more pairs of active antenna elements of at least a subset of all active antenna elements of the active antenna system; and muting at least one antenna element such that the determined antenna element separation is obtained between each of the one or more pairs of active antenna elements of at least the subset of all active antenna elements.

Method and a network node for muting antenna elements of an active antenna system

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

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.

The present disclosure relates to a metasurface arrangement including a first metasurface and a second metasurface which run mutually parallel and face each other. Each metasurface includes a corresponding periodic or quasi-periodic structure formed in a respective pattern. The first metasurface is formed in a dielectric material structure and the second metasurface is formed in either a dielectric material structure or in an electrically conducting structure. The periodic or quasi-periodic structure on the first metasurface is configured to yield a first response to an incident electromagnetic wave between the two metasurfaces, and the periodic or quasi-periodic structure on the second metasurface is configured to yield a second response to the incident electromagnetic wave between the two metasurfaces that is equivalent to the first response, thereby rendering the two metasurfaces mutually electromagnetically symmetric.

Metasurface arrangement

A wireless communication system node has at least two antenna ports, a beamforming controller, and a beamforming network. The beamforming network has at least two beam ports that are adapted to provide corresponding beams. The beamforming controller is arranged to control the beamforming network such that the beams have a common envelope in a desired plane, where the common envelope is adapted to provide coverage for a certain communication system sector.

Wireless communication system node with fixed beams having common envelope

There is provided mechanisms for beam selection. A method is performed by a network node. The method comprises performing a beam management procedure for at least two terminal devices. During the beam management procedure reference signals are transmitted in a beam sweep as performed in a set of beams. During the beam management procedure, each of the at least two terminal devices reports at least two beams in the set of beams for which the reference signals have been received with highest power. The method comprises selecting which beams to serve the at least two terminal devices based jointly on the reports and a mutual interference criterion for the at least two terminal devices.

Beam selection for terminal devices in MU-MIMO operation

The present disclosure relates to a wireless communication system node (), where the node () comprises at least two antenna ports (PA, PB, PC, PD; PA, PB, PC, PD). The node () further comprises a beamforming controller () and a 5 beamforming network () which in turn comprises at least two beam ports () that are adapted to provide corresponding beams (). The beamforming controller () is arranged to control the beamforming network () such that the beams () have a common envelope () in a desired plane, where the common envelope () is adapted to a 10 desired coverage for a certain communication system sector ().

A method for selecting a geometry of an antenna array in a multiple-input multiple-output, MIMO, radio communication system (), the method comprising; obtaining a first parameter set comprising a first communication distance Dand a first carrier frequency f, and a second parameter set comprising a second communication distance Dand a second carrier frequency f, determining a first radio communication performance measure based on the first parameter set in dependence of antenna array geometry, and a second radio communication performance measure based on the second parameter set in dependence of antenna array geometry, and selecting the antenna array geometry based on the first radio communication performance measure and on the second radio communication performance measure.

Antenna geometries for improved MIMO communication

The present disclosure relates to a device () adapted for aligning a first directive antenna () in an alignment direction Dtowards a second antenna (). The device is adapted to acquire measurement data regarding: &#x22c5;&#x2014;a first signal power () received from the second antenna () using a first effective antenna aperture () when the first directive antenna () is moved along an angular span () passing a desired alignment angle () along a certain direction (); and &#x22c5;&#x2014;a second signal power () received from the second antenna () using a second effective antenna aperture () when the first directive antenna () is moved along an angular span () passing a desired alignment angle () along a certain direction, the second effective antenna aperture () being smaller than the first effective antenna aperture (). The device () is furthermore adapted to determine the alignment direction Das an angle () in the angular span (), at which angle () a local maximum value () for both the first signal power () and the second signal power () coincide.

Alignment means for directive antennas

The disclosure relates to an antenna systemfor providing coverage for multiple-input multiple-output, MIMO, communication in mixed type of spaces. The antenna systemcomprises a leaky cablearranged to provide coverage in a first type of space, and a distributed antenna systemcomprising one or more antennasand ranged to provide coverage in a second type of space, wherein each of the one or more antennasof the distributed antenna systemis connected to the leaky cablethrough a circulator, and wherein the MIMO communication is enabled by both ends of the leaky cablebeing adapted for connection to a respective antenna portof a network nodeconfigured for 10 MIMO communication. The disclosure also relates to a related method and system.

Antenna system providing coverage for multiple-input multiple-output, MIMO, communication, a method and system

An antenna array comprising at least two sets of antenna unit elements is disclosed. Each set of antenna unit elements supports a respective frequency band, wherein a vertical center-to-center distance between the antenna unit elements of a lowest frequency among the respective frequency bands is more than twice the vertical extension, D, of convex hull containing one antenna unit element of the lowest frequency, and antenna unit elements of at least a second set are arranged interleaved with the antenna unit elements of the lowest frequency. An arrangement comprising the antenna array and a network node is also disclosed.

Antenna array and arrangement comprising an antenna array and a network node

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Mölndal, Sweden

Martin Johansson