Telefonaktiebolaget Lm Ericsson (publ)

Optis Wireless Technology, LLC

Wiberg, Niclas

Moe, Johan

Pål Frenger

Martin Hessler

Erik A Eriksson

Fredrik Gunnarsson

Jonas Fröberg Olsson

Stefan Parkvall

Johan Rune

Robert Baldemair

Pradeepa Ramachandra

Niclas Wiberg

Erik G Larsson

Johan Moe

Stefan Wager

Bengt Lindoff

Bo Hagerman

Reza Moosavi

Icaro L J Da Silva

Erik Bengt Dahlman

Andres Reial

Rui Fan

Andreas Bergström

Jinhua Liu

Henrik Sahlin

Niklas Johansson

Gunnar Mildh

Claes Tidestav

Gabor Fodor

Janne Peisa

Jianfeng Wang

Zhan Zhang

Pontus Wallentin

Jari Tapio Vikberg

Qingyu Miao

Kumar Balachandran

Zhang Zhang

Torgny Palenius

Hai Feng Wang

Peter Alriksson

Jose Luis Pradas

Eva Englund

Mikael Coldrey

Yi-Pin Eric Wang

Dennis Hui

Magnus Stattin

Sven Oscar Petersson

Joakim Axmon

Karl Norrman

Qianxi Lu

Johan Torsner

Fredrik Athley

Joachim Sachs

Ali S Khayrallah

Gen Li

Thorsten Lohmar

Lars Lindbom

Osman Nuri Can Yilmaz

Johan Furuskog

Lars Sundström

Patrik Rugeland

Henrik Asplund

Anders Furuskär

Martin Johansson

Karl Werner

Patrik Torgny Karlsson

Johan Axnäs

Mårten Ericson

Jonas Kronander

Shehzad Ali Ashraf

Fredrik Lindqvist

Dennis Sundman

Ning He

Walter Müller

Johan Mikael Bergman

Asbjörn Grövlen

Konstantinos Dimou

Peter Larsson

Jingya Li

Zhipeng Lin

Magnus Åström

Harald Kallin

Johan Nilsson

Nicklas Johansson

Havish Koorapaty

Anders Wallén

Jens Bergqvist

Christofer Lindheimer

Magnus Norberg Olsson

Daniel Chen Larsson

Yufei W Blankenship

George Jöngren

Henning Wiemann

Bo Göransson

Jacob Ström

Dirk Gerstenberger

Michael Meyer

Jiann-Ching Guey

Lei Wan

Riikka Susitaival

Gustav Wikström

Svante Bergman

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

A control system is configured to control a transmission system (). The control system may be configured to, responsive to the occurrence of a condition for the transmission system () to exit a sleep state (S), trigger the transmission system () to transition from the sleep state (S) to an active state (A). The control system may be further configured to control the transmission system () to transmit during at least a fraction of a transition period (P) over which the transmission system () transitions from the sleep state (S) to the active state (A). Such control may for instance control the transmission system () to transmit, during the at least a fraction of the transition period (P), in compliance with relaxed component performance requirements that are relaxed with respect to the component performance requirements with which the transmission system () is configured to transmit during the active state (A).

Transmission system control

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

Embodiments herein disclose, e.g., an arrangement for handling radio signals, wherein the arrangement has an elongated housing. The elongated housing has at least one antenna processing unit (APU) and at least two groups of antenna elements, wherein each group of antenna elements includes antenna elements and a beamforming unit that generates one or more beams. The at least one APU is connected to both the groups of antenna elements.

Arrangement and method performed therein for handling communication

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.

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 of controlling radio transmission in a wireless communication network is described, the method comprising a radio device () receiving an indication of a set of first signals () for associating the set of first signals () with a second signal. The method comprises the radio device () receiving at least one of the first signals (); and in response to the indication, the radio device () estimating at least one parameter of the second signal based on the at least one received first signal. The method further comprises, based on the at least one estimated parameter, the radio device () processing at least one radio transmission () from the wireless communication network.

Multi-source quasi collocation of reference signals

Channel state feedback is provided from a UE to a base station as a first, detailed or a second, less detailed type of channel state feedback information. Initially it is determined whether the UE has received an uplink grant from the base station or not. If the UE has received an uplink grant, a first type of channel state feedback information is transmitted to the base station on the granted resource. If, however, the UE has not received an uplink grant, a second type of channel state feedback information is transmitted to the base station. Different types of channel state feedback information enables a UE and an associated base station to use available resources more efficiently, when requesting for and delivering channel state feedback information.

Using an uplink grant as trigger of first or second type of CQI report

Systems and methods for broadcast/multicast transmission in a distributed cell-free massive Multiple Input Multiple Output (MIMO) network are disclosed. In one embodiment, a method for broadcasting/multicasting data to User Equipments (UEs) comprises, at each Access Point (AP) of two or more APs, obtaining long-term Channel State Information (CSI) for a UE(s) and communicating the long-term CSI for the UE to a central processing system. The method further comprises, at the central processing system, receiving the long-term CSI for the UE from each AP, computing a precoding vector (w) for the UE(s) across the APs based on the long-term CSI, and communicating the precoding vector (w) to the APs. The method further comprises, at each AP, obtaining the precoding vector (w) from the central processing system, precoding data to be broadcast/multicast to the UE(s) based on the precoding vector (w), and broadcasting/multicasting the precoded data to the UE(s).

Broadcast and multicast transmission in a distributed massive MIMO network

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

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Linköping, Sweden

Pål Frenger