Telefonaktiebolaget Lm Ericsson (publ)

Guangdong Oppo Mobile Telecommunications Corp., Ltd.

Martin Hessler

Pål Frenger

Erik A Eriksson

Jonas Fröberg Olsson

Robert Baldemair

Lars Lindbom

Andreas Bergström

Niclas Wiberg

Henrik Sahlin

Mattias Frenne

Fredrik Gunnarsson

Torgny Palenius

Reza Moosavi

Pradeepa Ramachandra

Osman Nuri Can Yilmaz

Johan Furuskog

Bengt Lindoff

Rui Fan

Sven Oscar Petersson

Erik G Larsson

Stefan Parkvall

Johan Rune

Stefan Wager

Jianfeng Wang

Fredrik Lindqvist

Gunnar Mildh

Joakim Axmon

Johan Torsner

Gabor Fodor

Joachim Sachs

Hai Feng Wang

Pontus Wallentin

Bo Lincoln

Nadia Brahmi

Icaro L J Da Silva

Yi-Pin Eric Wang

Erik Bengt Dahlman

Andres Reial

Dennis Hui

Magnus Stattin

Niklas Johansson

Peter Alriksson

Lars Sundström

Zhan Zhang

Jose Luis Pradas

Paul Schliwa-Bertling

Yufei W Blankenship

Jinhua Liu

Jari Tapio Vikberg

Karl Norrman

Qianxi Lu

Qingyu Miao

Fredrik Athley

Janne Peisa

Kumar Balachandran

Ali S Khayrallah

Gen Li

Claes Tidestav

Thorsten Lohmar

Zhang Zhang

Bo Hagerman

Walter Müller

Stefano Sorrentino

George Jöngren

Stephen J Grant

Sebastian Faxér

Niklas Andgart

Karl Werner

Patrik Rugeland

Henrik Asplund

Anders Furuskär

Martin Johansson

Mikael Coldrey

Patrik Torgny Karlsson

Johan Axnäs

Mårten Ericson

Shehzad Ali Ashraf

Jonas Kronander

Dennis Sundman

Ning He

Håkan Axelsson

Mikael Prytz

Yngve Selén

Andreas Cedergren

Niklas Jaldén

Ali El Essaili

Håkan Björkegren

Qiang Zhang

Håkan Andersson

Edgar Ramos

Johan Nilsson

Nicklas Johansson

Gustav Wikström

Anders Wallén

Mattias Andersson

Svante Bergman

Göran Rune

Henrik Rydén

Christofer Lindheimer

Sara Modarres Razavi

According to an aspect, a wireless node selects a set of reference signal antenna ports for use in transmitting data to other wireless nodes in a given transmit time interval, from a plurality of sets of reference signal antenna ports that are available for use and that include reference signal antenna ports having different reference signal densities in the frequency and/or time dimension. The wireless node sends a message to a second wireless node indicating a reference signal assignment and including an indication of the selected set of reference signal antenna ports.

Methods for adapting density of demodulation reference signals

The embodiments herein relate to a method performed by an APU () for handling data transmissions in a distributed massive MIMO communication system (). The APU () is comprised in one of at least two non-co-located groups of APUs () in the system (). The APU () determines a first pre-coding configuration and a DL reference signal. The APU () transmits, to a UE (), the DL reference signal pre-coded with the first pre-coding configuration. The APU () receives information indicating at least one phase adjustment parameter from the UE (), and determines a second pre-coding configuration based on the first pre-coding configuration adjusted with the phase adjustment parameter. The APU () transmits DL data pre-coded with the second pre-coding configuration to the UE ().

Methods, UE and APU for handling data transmissions in a distributed MIMO 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

The present invention relates to a method and wireless device for supporting verification of a device category as well as to a method and a network node. It is desired to quickly allow finding out whether a wireless device should be allowed to access a network by verifying a device category. The method at the device comprises receiving from a network node a verification message including a random bit sequence; calculating a verification signature from the random bit sequence by using a verification function assigned to the device category; and transmitting the calculated verification signature to the network node in an uplink message of a random access procedure or in the first uplink message following a random access procedure so as to allow verification of the device category using the verification signature at a network node.

Wireless device and network node for verification of a device category as well as corresponding methods in a wireless communication system

Embodiments herein relate to a method performed by a network node for enabling verification of a broadcast message transmitted from the network node to a wireless device. The network node signals a first public key, to the wireless device, using a secure connection. The network node further transmits a first broadcast message protected by a signature. The signature is generated from at least a protected part of the first broadcast message using a first private key, the first private key being associated with the first public key. Thereby, the broadcast message can be verified by the wireless device using the distributed first public key, thus preventing fake broadcast messages to be accepted by the device.

Methods, network node and wireless device for verification of broadcast messages

There is provided provision of timing information of a first timing information source using timing information of a second timing information source to a wireless device. A network node determines that second timing information from the second timing information source is available and that timing information from the first timing information source is derivable from the second timing information. The network node instructs the wireless device to use the second timing information as a source for deriving first timing information of the first timing information source.

Provision of time information to a wireless device

A user equipment () is provided for use in a cellular network. The user equipment includes a transceiver (), a processor (), and a memory (). The user equipment () is configured to determine, for a data transmission, a mapping form a demodulation reference signal (DMRS) to a PNT-RS. A DMRS resulting signal is generated from a subset of DMRS for a first resource element in a subcarrier. The DMRS resulting signal is copied from the first resource element to a second resource element assigned to the PNT-RS in the subcarrier. The data transmission is transmitted using the DMRS resulting signal and the PNT-RS.

Systems and methods for phase noise tracking reference signal sequence generation using demodulation reference signals

There is disclosed a transmitting node for a Radio Access Network, the transmitting node being adapted for transmitting, based on one or more transmission parameters, of reference signaling, and/or signaling including reference signaling, wherein the reference signaling may comprise phase tracking reference signaling and wherein the one or more transmission parameters comprise a Modulation and Coding Scheme (MCS).

PT-RS configuration depending on scheduling parameters

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 invention relates to a method and wireless device for supporting verification of a device as well as to a method and a network node. It is desired to enable the reliable verification of a device. The method at the device includes transmitting the wireless device identifier; calculating verification information from a random bit sequence by using a verification function associated with the wireless device identifier, wherein the verification function uses the cryptographic key; transmitting a message including the verification information to a trusted network node over a secure connection; and wherein the secure connection is established by using a trusted network identifier or by using a network encryption key associated with a trusted network identifier.

Wireless device and network node for verification of a device as well as corresponding methods in a wireless communication system

A method for accelerating bit error correction in a receiver in a radio communication network, wherein the receiver is configured to update soft bit values associated with each code bit of a block code based on parallel parity checks. The method includes receiving a block code encoded message, and for any group of two or more rows of a parity-check matrix of the block code: when the two or more rows are non-overlapping: combining the two or more rows in a row group for parallel updating, updating, in parallel, the parity checks of the row group for the received message, and forming a message estimate based on the updated parity checks. Corresponding computer program product, apparatus, and receiver are also disclosed.

Accelerating bit error correction in a receiver

Embodiments herein relate to method performed by a radio-network node for handling a data transmission, from a wireless device to the radio-network node, in a wireless communication network. The radio-network node schedules one or more resources for carrying an uplink data transmission from the wireless device over a channel, and for carrying a feedback transmission, of a downlink data transmission from the radio-network node, over the same channel. The radio-network node transmits a control message to the wireless device, which control message indicates the one or more resources scheduled for carrying the uplink data transmission and the feedback transmission over the same channel.

Radio-network node, wireless device and methods performed therein

A method for verifying data integrity in a receiver in a wireless communication network is disclosed. The method includes receiving a data message, wherein the data message includes a group of data elements and a checksum, computing a complete syndrome vector based on partial syndrome vectors, wherein the partial syndrome vectors are computed, in parallel, by multiplying part of a parity-check matrix with corresponding part of the received data message, determining that all vector elements of the complete syndrome vector are zero, and verifying that the received data message is correct when all the vector elements of the complete syndrome vector are zero, and incorrect otherwise. Corresponding computer program product, apparatus, and receiver are also disclosed.

Verifying data integrity in a receiver

The present disclosure relates to radio network communication. In one of its aspects, the present disclosure relates to a method, performed by a first APU, for sequential transmit precoding in a radio stripe system. The system comprises at least two APUs connected 5 in series from a CPU and serves at least two UEs. According to the method, channel estimates for channels to the served UEs are obtained and based on these, a precoding filter is determined. The precoding filter is going to be applied to signals that are to be transmitted from the first APU to the UEs. Thereafter, based on the determined precoding filter and the obtained channel estimates, effective precoded channels for the 0 signals to the UEs are determined. These represent the effective channel created after the precoding filter being applied to each channel for the UEs. The effective precoded channels are transmitted to at least one subsequent second APU.

Apparatuses and methods for sequential transmit precoding

Growing community of inventors

Linköping, Sweden

Martin Hessler