Telefonaktiebolaget Lm Ericsson (publ)

Niklas Jaldén

Henrik Asplund

Fredrik Athley

Andreas Nilsson

Karl Werner

Sven Oscar Petersson

Bo Hagerman

Martin Johansson

Virgile Garcia

Pål Frenger

Walter Müller

Robert Baldemair

Stefan Parkvall

Bengt Lindoff

Gunnar Mildh

Icaro L J Da Silva

Johan Rune

Fredrik Gunnarsson

Jinhua Liu

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

Joakim Axmon

Karl Norrman

Qianxi Lu

Qingyu Miao

Johan Torsner

Pradeepa Ramachandra

Gabor Fodor

Janne Peisa

Joachim Sachs

Kumar Balachandran

Ali S Khayrallah

Gen Li

Claes Tidestav

Thorsten Lohmar

Zhang Zhang

Osman Nuri Can Yilmaz

Niclas Wiberg

Lars Lindbom

Johan Furuskog

Jonas Fröberg Olsson

Niklas Johansson

Torgny Palenius

Jianfeng Wang

Hai Feng Wang

Lars Sundström

Zhan Zhang

Peter Alriksson

Andreas Bergström

Jose Luis Pradas

Pontus Wallentin

Patrik Rugeland

Anders Furuskär

Mikael Coldrey

Patrik Torgny Karlsson

Johan Axnäs

Mårten Ericson

Jonas Kronander

Shehzad Ali Ashraf

Fredrik Lindqvist

Reza Moosavi

Ning He

Dennis Sundman

Mikael Prytz

Håkan Axelsson

Yngve Selén

Andreas Cedergren

Nadia Brahmi

Ali El Essaili

Jonas Medbo

Elena Myhre

Jörg Huschke

Hugo Tullberg

Emma Wittenmark

Lars Manholm

Ulf Gustavsson

Ke Wang Helmersson

Peter Von Wrycza

Bengt-Erik Olsson

Thomas Walldeen

Eleftherios Karipidis

Simon Järmyr

Rui Fan

Håkan Björkegren

Edgar Ramos

David Astely

Bo Lincoln

Johan Nilsson

Anders Wallén

Harald Kallin

Svante Bergman

Elmar Trojer

The present disclosure relates to a method of a radio base station () of controlling allocation of resources to wireless communication devices (), and a radio base station () performing the method. In an aspect, a method of a radio base station () of controlling allocation of resources to wireless communication devices () is provided. The method comprises providing (S) a first location with radio coverage using at least a first frequency band and a second frequency band and a second location with radio coverage using the first frequency band, the second frequency band being located at a higher frequency than the first frequency band and temporarily reallocating (S) resources of the second frequency band from the first location to the second location upon acquiring an indication that a wireless communication device () at the second location requires improved coverage.

Reallocating resources in 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.

Network architecture, methods, and devices for a wireless communications network

Methods and apparatus are provided for configuring a plurality of User Equipments (UEs) to communicate with a base station. In one example, a method includes determining, for each UE, a respective bandwidth based on an indication of channel quality between the UE and the base station, and configuring at least a subset of the plurality of UEs to communicate with the base station based on the respective bandwidths.

Configuring a plurality of user equipments

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 disclosure provides methods, a base station and network nodes relating to the assignment of pilot signals to wireless devices. One aspect provides a method including obtaining grouping information grouping one or more of the plurality of wireless devices together based at least in part on clustering information corresponding to each of the plurality of wireless devices and according to one or more clustering criterion, assigning at least one pilot signal to the one or more wireless devices based on the grouping information and transmitting the at least one pilot signal.

Pilot signal assignment

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.

A technique for transmitting on a multiple-input channel from a transmitting device to at least one receiving device is described. As to a method of the technique, a quality of a channel estimate of the multiple-input channel from the transmitting device to the at least one receiving device is determined. A transmission on the multiple-input channel from the transmitting device to the at least one receiving device is performed. The transmission is spatially precoded using at least one precoder determined out of a set of precoders. A size of the set of precoders is an increasing or non-decreasing function of the determined quality of the channel estimate.

Technique for precoding a radio transmission

A channel matrix representing characteristics of a multi-path channel between a transmitter device () equipped with multiple transmitter antennas () and at least one receiver device () equipped with one or more receiver antennas (). The channel matrix is organized in one or more channel vectors each associated with a corresponding one of the one or more receiver antennas (). An iterative optimization algorithm is applied to determine a precoding matrix from the channel matrix. At least one step size of the iterative optimization algorithm is set depending on a vector norm of at least one of the channel vectors. Multi-antenna transmission by the transmitter device () is then controlled based on the determined precoding matrix.

Channel-matrix dependent step size for iterative precoding matrix calculation

There is provided mechanisms for determining beam settings for beam management. A method is performed by a first radio transceiver device. The method comprises obtaining information about expected distribution of second radio transceiver devices in a network coverage region of the first radio transceiver device in which the beam management is to be performed. The method comprises determining beam settings for a first set of beams and a second set of beams. The first set of beams and the second set of beams are to be used for the beam management. There are fewer beams in the first set of beams than in the second set of beams. The beams in the first set of beams collectively cover all beams in the second set of beams. The beam settings for the beams in the first set of beams are determined according to the obtained information.

Determining beam settings for beam management

Disclosed is a method and performed by a system of a wireless communication network for determining signal quality indications. The method includes determining a correlation between a quality of a signal received at a first wireless device and a quality of a signal received at a second wireless device, obtaining a first indication of quality of a signal received at the first wireless device, and determining a second indication of quality of signals received at the second wireless device based on the first indication and the determined correlation. The system may be implemented in a radio access network node.

Method and system for determining signal quality indications

Uplink radio transmissions () from a radio device () are scheduled by allocating radio resources for the uplink radio transmissions () and controlling a transmit power of the uplink radio transmissions (). Depending on a bandwidth of radio resources to be allocated for an uplink radio transmission () and a current value of the transmit power, an estimate of the signal-to-noise ratio of the uplink radio transmission () is determined. The estimate of the signal-to-noise ratio is compared to at least one of the lower target and the upper target. Depending on a result of the comparison, the bandwidth is adapted, and radio resources for the uplink radio transmission () are allocated in accordance with the adapted bandwidth.

Uplink scheduling based on upper and lower SNR targets

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

A channel matrix representing characteristics of a multi-path channel between a transmitter device () equipped with multiple transmitter antennas () and a receiver device () equipped with multiple receiver antennas () is determined. The channel matrix is organized in a first number of channel vectors each associated with a different one of the multiple receiver antennas (). The channel vectors are combined to a smaller second number of linear combinations of the channel vectors and a reduced channel matrix is composed from the linear combinations of the channel vectors. A precoding matrix is determined based on the reduced channel matrix, and multi-antenna transmission by the transmitter device is controlled based on the determined precoding matrix.

Channel-matrix reduction for precoding control

Growing community of inventors

Enköping, Sweden

Niklas Jaldén