Telefonaktiebolaget Lm Ericsson (publ)

Optis Cellular Technology, LLC

Farshid Ghasemzadeh

Muhammad Ali Kazmi

Thomas Chapman

Robert Baldemair

Joakim Axmon

Erika Tejedor

Walter Gerhard Alois Müller

Daniel Chen Larsson

Jinhua Liu

Qingyu Miao

Jung-Fu Cheng

Walter Müller

Christian Bergljung

Leonard Rexberg

Torbjörn Elfström

Esther Sienkiewicz

Klas Sjerling

Bo Göransson

Mårten Sundberg

Shaohua Li

Anders Wallén

Ali Behravan

Anders Furuskär

Imadur Rahman

Meng Wang

Ulf Gustavsson

Stefan Eriksson Löwenmark

Magnus Larsson

Oskar Drugge

Ulf Skärby

Eric Nordström

Johan Sköld

Bernt Johansson

Christian Braun

Daniel Larsson

Aurelian Bria

Jan-Erik Thillberg

Kai Yu

Hans Aqvist

Tadashi Mizota

Senay Negusse

Kajsa Nilsson

Torbjörn ELFSTRÖM

Aurelain Bria

According to certain embodiments, a method in a network node (A) for determining spectrum utilization for a plurality of numerologies transmitted within an allocated bandwidth includes selecting one or more of the plurality of numerologies. For each of the one or more selected numerologies, a spectrum utilization is determined. The spectrum utilization is based on the spectrum utilization that would be achieved if the selected numerology was transmitted across the allocated bandwidth. A physical resource block (PRB) allocation is calculated based on the allocated bandwidth and the spectrum utilization.

Method for determining spectrum utilization

A method of declaring Equivalent Isotropically Radiated Power (EIRP) for an operating frequency band of a base station. The method includes: declaring a first EIRP for a first frequency of the operating frequency band, declaring a second EIRP for a second frequency of the operating frequency band, and declaring a third EIRP for a third frequency of the operating frequency band, wherein the third frequency is between the first frequency and the second frequency, and wherein the second frequency is higher than the first frequency.

Equivalent isotropically radiated power (EIRP) manufacturer declaration concept for base station

Systems and methods for a scalable test model for a cellular communications system having multiple different bandwidth and subcarrier combinations are disclosed. Embodiments of a method performed by a test node and corresponding embodiments of a test node are disclosed. In some embodiments, a method performed by a test node comprises generating a test signal for a particular bandwidth and subcarrier spacing combination, the test signal being in accordance with a test model that is scalable for a plurality of different bandwidth and subcarrier spacing combinations. By using the scalable test model, the test model can be flexibly used to test for different bandwidth and subcarrier spacing combinations.

Scalable test model for cellular communication system that supports different bandwidth and subcarrier spacing combinations

A method performed by a network node for determining a beam to be transmitted to at least a first User Equipment, UE is provided. The network node determines () a beam to be transmitted to at least a first UE based on an obtained average spatial profile of radiated power in each direction. The average spatial profile of radiated power is based on an spatial profile of radiated power averaged over any one or more out of a frequency interval and a time interval.

Network node and method therein for determining a beam to be transmitted for at least a first user equipment

There is provided mechanisms for transmitting adjusted signals. A method is performed by a radio communications device comprising at least two radio transmitter units. The method comprises generating a signal to be transmitted by the radio transmitter units. The method comprises adjusting the signal at at least one of the radio transmitter units by dithering at least one radio parameter value such that the signals from all radio transmitter units are mutually different. The method comprises transmitting the adjusted signal by the radio transmitter units.

Handling of unwanted emissions from a radio communications device

Some embodiments include a method in a wireless transmitter for transmitting a first wireless signal according to a first numerology in a network capable of supporting two numerologies. The method comprises obtaining one or more requirements associated with each numerology; adapting at least one of a first filter property of the wireless transmitter, a first beamforming property of the wireless transmitter, and a guard band size between the first and second numerology based on the obtained one or more requirements; and transmitting the first wireless signal according to the first numerology. Particular embodiments may adapt one of a second filter property and/or a second beamforming property of the wireless transmitter, and transmit/receive a second wireless signal according to the second numerology. Further embodiments include a method in a wireless receiver corresponding to the embodiments in the wireless transmitter.

Multiple numerologies in a wireless communication system

The present invention relates to a method and apparatus for testing mobile terminals in an OFDMA system, in which all or part of available downlink radio resources in a cell are transmitted. A processing unit in a test apparatus splits a set of contiguous resource blocks into separate contiguous portions. A first contiguous portion of the set of resource blocks is allocated to users of a first type, and a second contiguous portion of the set of resource blocks is allocated to users of a second type. A transmitter in the test apparatus transmits test signals to the users of the first type and the second type using the at least one contiguous set of resource blocks.

Method and apparatus for testing mobile terminals in an OFDM system

The method is performed in a radio network node and comprises the steps of: obtaining antenna data affecting transmission weights applied for each individual antenna of the plurality of antennas; obtaining an intermediate power value based on a sum of signals from couplers provided by each antenna of the plurality of antennas; determining a power factor based on the antenna data; and calculating the total radiated power based on the intermediate power value and the power factor.

Method and radio network node for determining total radiated power from a plurality of antennas

An transmitter arrangement and a method therein are provided for linearization of an active antenna array. The active antenna array comprises a plurality of antenna elements, which are associated with a plurality of power amplifiers. The active antenna array is further associated with a precoder having a number of input and output ports. The method comprises obtaining a first signal provided to the antenna array via a first input port of the precoder. The method further comprises adapting a pre-distorting linearizer connected to the first input port based on the first signal and on feedback from the plurality of antenna elements, resulting from the propagation of the first signal via the precoder, and via the plurality of power amplifiers. Embodiments are also provided for adapting a pre-distorting linearizer based on a plurality of input signals and feedback from the plurality of antenna elements.

Linearization of active antenna array

A method for selecting carrier aggregation (CA) configurations includes determining whether a first wireless device is operating or expected to operate using a single carrier configuration on a cell associated with a first frequency band. If the first wireless device is not operating or expected to operate using a single carrier configuration on a cell associated with a first frequency band, a first CA configuration is selected for a second wireless device. If the first wireless device is operating or expected to operate using a single carrier configuration on a cell associated with a first frequency band, a second CA configuration that is more restrictive than the first CA configuration is selected for the second wireless device. An identifier of the selected one of the first CA configuration or the second configuration is transmitted to the second wireless device.

System and method for selecting and adapting carrier aggregation configurations

In a multi-standard base station (BS) site, a first (BS) module operates in multi-antenna transmission mode according to a first radio access technology (RAT) by means of multiple transmitter branches. The first BS module determines phase/time compensation information based on UE feedback information representative of precoding matrix index, PMI. The multi-standard BS site performs, for operation according to the first RAT, a first compensation for a relative phase/time error between at least two of the transmitter branches based on the phase/time compensation information. A second BS module operates for transmission according to a second RAT by means of at least two of the multiple transmitter branches. The multi-standard BS site performs, for operation according to the second RAT, a second compensation for a relative phase/time error between at least two of the transmitter branches based on the phase/time compensation information from the first BS module.

Operation of a multi-standard base station site supporting at least two different radio access technologies

Method and an apparatus for application of distortion shaping when using Peak-to-Average Ratio (PAR) reduction. The apparatus obtains an input signal. The apparatus applies, on the input signal, the PAR reduction and the distortion shaping to form an output signal. A bandwidth associated with the distortion shaping covers multiple channel bandwidths comprised in the input signal, which multiple channel bandwidths are associated with one or more Radio Access Technologies (RATs). Embodiments herein facilitate the distortion shaping and applicability of PAR reduction, in particular in case one of the RATs is Global System for Mobile Communications (GSM) or similar and/or the input signal is associated with radio communications systems that support multiple RATs.

Method and apparatus for application of distortion shaping when using peak-to-average ratio reduction

Disclosed are methods as well as wireless devices and radio network nodes for radio resource management (RRM) in inter-operator time-sharing of a frequency spectrum Fs. In one example embodiment, the same frequency spectrum Fs is allocated to each of a plurality of operators during different time periods such that the same frequency spectrum is shared among all of the plurality of operators.

Radio resource management in inter-operator time sharing of frequency spectrum

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Sollentuna, Sweden

Farshid Ghasemzadeh