Telefonaktiebolaget Lm Ericsson (publ)

Lars Manholm

Sven Oscar Petersson

Martin Johansson

Mikael Coldrey

Lars Sundström

Jonas Medbo

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

Pradeepa Ramachandra

Qingyu Miao

Johan Torsner

Fredrik Athley

Gabor Fodor

Janne Peisa

Kumar Balachandran

Joachim Sachs

Ali S Khayrallah

Gen Li

Claes Tidestav

Thorsten Lohmar

Zhang Zhang

Bo Hagerman

Osman Nuri Can Yilmaz

Lars Lindbom

Jonas Fröberg Olsson

Torgny Palenius

Niclas Wiberg

Johan Furuskog

Niklas Johansson

Jianfeng Wang

Hai Feng Wang

Andreas Bergström

Zhan Zhang

Peter Alriksson

Jose Luis Pradas

Pontus Wallentin

Patrik Rugeland

Mårten Ericson

Henrik Asplund

Karl Werner

Johan Axnäs

Patrik Torgny Karlsson

Shehzad Ali Ashraf

Jonas Kronander

Reza Moosavi

Fredrik Lindqvist

Dennis Sundman

Yngve Selén

Ning He

Mikael Prytz

Håkan Axelsson

Nadia Brahmi

Andreas Cedergren

Ali El Essaili

Niklas Jaldén

Jörg Huschke

Elena Myhre

Emma Wittenmark

Hugo Tullberg

Virgile Garcia

Ulf Gustavsson

Thomas Walldeen

Ke Wang Helmersson

Peter Von Wrycza

Bengt-Erik Olsson

Eleftherios Karipidis

Junaid Ansari

Rui Fan

Anders Furuskär

Håkan Björkegren

Andreas Nilsson

Edgar Ramos

Anders Wallén

Johan Nilsson

Bo Lincoln

Cong Shi

Per Anders Holmberg

Stefan Johansson

A polarizing screen for altering a polarization state of a radio frequency waveform radiated from a parallel plate waveguide (PPW) wherein the waveform has a centre frequency and a bandwidth, the polarizing screen comprising a plurality of developable sheets arranged stacked in parallel to each other in direction of a local normal vector of a first sheet at respective inter-sheet spacings, each sheet comprising an electrically conductive pattern forming a one-dimensional periodic structure of unit-cells in an extension direction, wherein the periodic structure is associated with a height measured orthogonally to the extension direction and orthogonally to the local normal vector of the shat, where each cell comprises an aperture configured to transmit the radio frequency waveform at a predetermined polarization state, wherein the height is determined in dependence of the centre frequency and/or the bandwidth of the radio frequency waveform such that the pre-determined polarization state is provided as well as matching between the PPW and a transmission medium of the radio frequency waveform.

Polarizer for parallel plate waveguides

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

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 compensating a movement of an antenna structure having a directive antenna mounted thereto is disclosed. The method comprises obtaining sensor data from a motion sensor, where the sensor data is indicative of the movement of the antenna structure relative to a reference orientation. Moreover, the motion sensor is associated with a set of calibration parameters such that when applied to the obtained sensor data, calibrated sensor data is formed. Further, the method comprises generating a compensation signal at an output for controlling a beam direction of the directive antenna based on the formed calibrated sensor data such that the beam direction is an intended direction of the directive antenna and such that the (unwanted) movement of the antenna structure is compensated. The method further comprises re-calibrating the motion sensor in order to generate a set of calibration coefficients upon either one of an expiry of a predefined time period, a counter reaching a counter threshold, or upon a measured antenna parameter or signal parameter diverging from a parameter range. Once, one of these conditions are fulfilled, the re-calibration is performed by obtaining a received signal strength indication (RSSI) while the beam direction is controlled based on the generated compensation signal, generating the set of calibration coefficients based on the obtained RSSI, and updating the set of calibration parameters for the motion sensor with the determined set of calibration coefficients.

Method and system for mast sway compensation

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 method performed in an unmanned aerial vehicle is provided for alerting about failure of the unmanned aerial vehicle. The method comprises identifying a malfunctioning in the unmanned aerial vehicle, and transmitting to a network node, a failure report comprising the malfunctioning and/or position of the unmanned aerial vehicle. Methods in a network node, and an unmanned aerial vehicle are also provided.

Methods and entities for alerting about failure of an unmanned aerial vehicle

A method () of planning deployment of a node () in a communications network () is disclosed. The method () is performed by an unmanned aerial vehicle () and comprises: flying () to a candidate location (c, . . . , c), performing (), at the candidate location (c, . . . , c), measurements on a wireless link (La, Lb) to at least one network node (), and providing () measurement results of the measurements to an entity (). A corresponding method in an entity is also provided, an unmanned aerial vehicle, an entity, computer programs and computer program products.

Planning deployment of a node in a communications network with a drone

The embodiments herein relate to a first waveguide comprising a first flange () surrounding an end opening () of the first waveguide (). The first flange () comprises at least two holes () which are periodically distributed around the end opening (). The first waveguide () is arranged to be connected to a second waveguide () by connecting the first flange () to a second flange () of the second waveguide () such that the end opening () of the first waveguide () faces an end opening () of the second waveguide () and such that the holes () in the first flange () are at least partly glide symmetrically positioned with respect to holes () which are periodically distributed around the end opening () of the second flange (b).

Waveguides interconnected by flanges having glide symmetrically positioned holes disposed therein

A method of providing an increase of communication capacity in a communications system is disclosed. The method is performed in a network device and comprises: establishing a need for a communication capacity increase in a first coverage area C, directing an unmanned aerial vehicle comprising an access node towards the first coverage area C, and providing communication resources by the access node of the unmanned aerial vehicle to meet the communication capacity increase in a first coverage area C. A method in an unmanned aerial vehicle, a network device, unmanned aerial vehicle, computer programs and computer program products are also provided.

Method of providing an increase of communication capacity in a communications system

A method () of controlling maximum output power of a transmitter () of an unmanned aerial vehicle () is disclosed. The method () is performed by the unmanned aerial vehicle () and comprises obtaining () information about its height h over ground, and adapting () maximum allowed output power based on the obtained information about the height h over ground. A corresponding method in a network node, an unmanned aerial vehicle, a network node, computer programs and computer program products are also disclosed.

Method of controlling maximum output power of a transmitter of an unmanned aerial vehicle

A method () performed in a network node () is provided for alerting about failure of an unmanned aerial vehicle (). The method () comprises receiving () a failure report from an unmanned aerial vehicle (), obtaining () an estimated crash point for the unmanned aerial vehicle (), and sending (), based on the obtained estimated crash point, warning signals to communication devices () residing within a defined area. Methods in an unmanned aerial vehicle and in a network entity, and a network node, unmanned aerial vehicle, network entity, computer programs and computer program products are also provided.

A method for alignment of an antenna in a microwave radio link system in Non-Line-Of Sight (NLOS) conditions. The method includes having a pointer indicating a first position on a surface to define a first candidate reflection/diffraction point on the surface, aligning a first antenna at a first node and a second antenna at a second node towards the first candidate reflection/diffraction point, and recording a relevant property concerning the channel quality between the first node and the second node via the first candidate reflection/diffraction point. The pointer may be a drone. Related devices and systems are disclosed.

Antenna alignment in a non-line of sight condition

Growing community of inventors

Göteborg, Sweden

Lars Manholm