Telefonaktiebolaget Lm Ericsson (publ)

Sven Jacobsson

Mikael Coldrey

Ulf Gustavsson

Fredrik Athley

Lars Sundström

Robert Baldemair

Stefan Parkvall

Bengt Lindoff

Gunnar Mildh

Icaro L J Da Silva

Johan Rune

Fredrik Gunnarsson

Jinhua Liu

Pål Frenger

Erik Bengt Dahlman

Yi-Pin Eric Wang

Andres Reial

Jari Tapio Vikberg

Erik A Eriksson

Henrik Sahlin

Stefan Wager

Dennis Hui

Martin Hessler

Magnus Stattin

Sven Oscar Petersson

Walter Müller

Joakim Axmon

Karl Norrman

Qianxi Lu

Pradeepa Ramachandra

Qingyu Miao

Johan Torsner

Gabor Fodor

Kumar Balachandran

Janne Peisa

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

Martin Johansson

Karl Werner

Johan Axnäs

Patrik Torgny Karlsson

Shehzad Ali Ashraf

Jonas Kronander

Fredrik Lindqvist

Reza Moosavi

Yngve Selén

Dennis Sundman

Ning He

Mikael Prytz

Håkan Axelsson

Nadia Brahmi

Andreas Cedergren

Ali El Essaili

Niklas Jaldén

Jörg Huschke

Jonas Medbo

Elena Myhre

Emma Wittenmark

Hugo Tullberg

Lars Manholm

Virgile Garcia

Thomas Walldeen

Ke Wang Helmersson

Peter Von Wrycza

Bengt-Erik Olsson

Eleftherios Karipidis

Junaid Ansari

Cong Shi

Du Ho Kang

Rui Fan

Anders Furuskär

Håkan Björkegren

Edgar Ramos

Andreas Nilsson

Anders Wallén

Johan Nilsson

Bo Lincoln

Mattias Frenne

There is provided a radio transceiver device. The radio transceiver device comprises an antenna. The radio transceiver device further comprises a signal processing module. The radio transceiver device further comprises a receiver chain configured to receive a first signal. The receiver chain extends from the antenna to the signal processing module and at least comprises an analog-to-digital converter (ADC), and is thereby configured to receive a first signal from the antenna and provide the first signal to the signal processing module after application of analog-to-digital conversion in the ADC to the first signal. The radio transceiver device further comprises a transmitter chain. The transmitter chain extends from the signal processing module to the antenna and at least comprises a digital-to-analog converter (DAC), and is thereby configured to receive a second signal from the signal processing module and provide the second signal to the antenna after application of digital-to-analog conversion in the DAC. The DAC is configured to generate a dither signal and is connected to the receiver chain for application of the dither signal to the first signal before application of analog-to-digital conversion in the ADC to the first signal.

Radio transceiver device configured for dithering of a received signal

A technique for transmitting data on at least two subbands () of a radio channel (). As to a method aspect of the technique performed by a radio device, control information indicative of at least two precoders for the at least two subbands () of the radio channel () is received. The data is transmitted on the at least two subbands () using the at least two precoders.

Subband precoding technique

A method and user equipment (UE) for providing beam reports for UEs that use different kinds of antenna panels are disclosed. According to one aspect, a method includes performing a first performance measurement on a first beam associated with a first antenna panel having a first panel property. The method also includes performing a second performance measurement of a second beam associated with a second antenna panel having a second panel property. The method further includes selecting one of the first beam and the second beam based at least in part on the first panel property and the second panel property. The process also includes transmitting a beam report including the selected one of the first beam and the second beam.

User equipment (UE) beam reports for UES with different kinds of UE panels

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, system and apparatus are disclosed. According to one or more embodiments, a network node configured to communicate with a wireless device is provided. The network node includes processing circuitry configured to: trigger a first aperiodic, AP, reference signal transmission using a reference signal trigger state; and trigger a second AP reference signal transmission using the reference signal trigger state associated with the first AP reference signal transmission, the second AP reference signal transmission is configured to use at least one different frequency resource than the first AP reference signal transmission.

Signaling support for enhanced frequency hopping for AP SRS

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 link adaptation method is disclosed for a transmitter node configured for spatial multiplexing of signals into streams and for transmission of spatially multiplexed streams over a forward channel, wherein each stream is intended for a receiver node. The method comprises selecting a transmission pre-coding setting for at least one of the spatially multiplexed streams based on an acquired channel estimate of the forward channel, estimating a forward channel disturbance component, wherein the forward channel disturbance component includes signal distortion for the forward channel caused by at least one hardware component of the transmitter node and/or the receiver node, and performing link adaptation for at least one of the spatially multiplexed streams based on the selected transmission pre-coding setting and the estimated forward channel disturbance component. Corresponding apparatus, transmitter node and computer program product are also disclosed.

Link adaptation for spatial multiplexing

There is provided a method, in a wireless device, for transmitting a reference signal. The method comprises: receiving a configuration via Radio Resource Control (RRC) from a network node, the configuration comprising a list of slot offset values configured for a Sounding Reference Signal (SRS) resource set; receiving Downlink Control Information (DCI) triggering the SRS resource set, wherein the DCI contains a slot offset bitfield for indicating one of the slot offset values in the list of slot offset values and wherein each entry of the list of slot offset values corresponds to a codepoint of the slot offset bitfield; and transmitting a reference signal using SRS resources configured in the triggered SRS resource set based on the indicated slot offset value.

Methods and nodes for updating aperiodic SRS slot offset

There is provided mechanisms for beamformed transmission using a precoder. A method is performed by a radio transceiver device. The radio transceiver device comprises hardware. The hardware impacts transmission of signals from the radio transceiver device. The method comprises acquiring channel conditions of a radio propagation channel between the radio transceiver device and at least one other radio transceiver device. The method comprises determining a precoder, in form of a linear precoding matrix, for beamformed transmission towards the at least one other radio transceiver device. The precoder is determined according to the channel conditions and a model of how the hardware impacts the transmission of signals from the radio transceiver device. The method comprises transmitting, using the precoder, a signal towards the at least one other radio transceiver device.

Beamformed transmission using a precoder

Disclosed is a method of a first wireless communication device configured for massive multi-user multiple-input multiple output (MU-MEMO) communication with two or more second wireless communication devices. The first wireless communication device comprises a plurality of antenna ports, each antenna port associated with at least one of a digital-to-analog converter (DAC) and an analog-to-digital converter (ADC). The method comprises acquiring an estimation of a communication channel between the first wireless communication device and the second wireless communication devices and acquiring an estimation of a quantization distortion caused by either DACs or ADCs. The method also comprises jointly determining (for the two or more second wireless communication devices) a transmission power and a transmission resource for each of the second wireless communication devices, wherein the joint determination is based on the estimation of the communication channel and on the estimation of the quantization distortion. Corresponding apparatus, network node and computer program product are also disclosed.

Method and apparatus for massive MU-MIMO

Growing community of inventors

Göteborg, Sweden

Sven Jacobsson