Telefonaktiebolaget Lm Ericsson (publ)

Hamed Farhadi

Ulf Gustavsson

Henrik Rydén

Niklas Jaldén

Maksym Girnyk

Sven Jacobsson

Nafiseh Shariati

Gabor Fodor

Mårten Sundberg

Thomas Eriksson

Roy Timo

Henrik RydÉn

Sina Rezaei Aghdam

A method of operating a first wireless communication device includes transmitting a first message toward one or more wireless devices including a second wireless device, the first message indicating a need of the first wireless communication device to use shared network resources, receiving an indication from the second wireless device that it has available resources, utilizing the available resources of the second wireless device, transmitting a second message toward the one or more wireless devices, the second message comprising an entry for inclusion in a distributed transaction ledger of utilized resources that is shared among the one or more wireless devices, the entry indicating utilization of the available resources of the second wireless device by the first wireless communication device, and storing the entry in a local copy of the distributed transaction ledger.

Resource sharing for cooperative communications

A computer implemented method for detecting data (y) comprised in a part (x) of a received signal (w) of a communication system (), wherein the received signal (w) is associated with a population and where the part (x) of the received signal (w) is associated with a sub-population of the population, the method comprising: configuring (S) a first function (f) to determine a context (c) of the received signal (w), wherein the context (c) is indicative of a state of the received signal (w), configuring (S) a second function (f) to detect the data (y) based on the part (x) of the received signal, wherein the second function (f) is arranged to be parameterized by the context (c), and detecting (S) the data (y) by the first (f) and second (f) functions.

Context aware data receiver for communication signals based on machine learning

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

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

In a first method, a wireless device estimates a delay profile of a channel impulse response, CIR, for a channel between a network node and the wireless device, compresses the delay profile using a compression function, and transmits the compressed delay profile. The compression function includes a first function and a quantizer. The first function is configured to receive input data and reduce a dimension of the input data. In a second method, a network node receives a compressed delay profile of CIR for a channel between a network node and a wireless device, decompresses the compressed delay profile using a decompression function, and estimates a position of the wireless device based on at least the decompressed delay profile. The decompression function includes a first function which is configured to receive input data and provide output data in a higher dimensional space than the input data.

Compression and decompression of delay profile

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

Pre-coding methods are disclosed for a transmitter node and for a receiver node, respectively. The transmitter node and/or the receiver node comprises at least one hardware component causing signal distortion for a forward channel and/or a reverse channel Transmitter node reference signals are transmitted by the transmitter node and received by the receiver node, wherein the transmitter node reference signals result from use of a transmitter node transmission pre-coding setting and an allocated transmission power. The receiver node estimates a forward channel disturbance component (including the signal distortion for the forward channel), selects a receiver node reception pre-coding setting based on the estimated forward channel disturbance component, and updates a receiver node transmission pre-coding setting by using the selected receiver node reception pre-coding setting as receiver node transmission pre-coding setting. Receiver node reference signals are transmitted by the receiver node and received by the transmitter node, wherein the receiver node reference signals result from use of the updated receiver node transmission pre-coding setting. The transmitter node estimates a reverse channel disturbance component (including the signal distortion for the reverse channel), selects a transmitter node reception pre-coding setting based on the estimated reverse channel disturbance component, and updates the transmitter node transmission pre-coding setting by using the selected transmitter node reception pre-coding setting as transmitter node transmission pre-coding setting. Corresponding pre-coding apparatuses, transmitter/receiver nodes, and computer program product are also disclosed.

Pre-coding setting

There is provided mechanisms for shaping cells in a wireless communications network. A method is performed by a network node. The method comprises obtaining spatial channel characteristics of a set of currently and/or previously served terminal devices in the wireless communications network, wherein the spatial channel characteristics are indicative of a current collective first network performance metric value for the set of currently and/or previously served terminal devices. The method comprises identifying, using the spatial channel characteristics, those terminal devices of the set of currently and/or previously served terminal devices that have an individual second network performance metric value below a threshold value by comparing the individual second network performance metric value for each of the currently and/or previously served terminal devices to the threshold value. The method comprises determining beam forming parameters for shaping the cells based on the identified terminal devices, wherein the cells are shaped to increase an individual first network performance metric value for the identified terminal devices, wherein the beam forming parameters give rise to a modified set of terminal devices being served in wireless communications network, and wherein spatial channel characteristics of the modified set of terminal devices are indicative of a new collective first network performance metric value for the modified set of terminal devices. The method comprises providing a notification of the determined beam forming parameters to a radio access network node only when the new collective first network performance metric value is not worse than the current collective first network performance metric value.

Growing community of inventors

Stockholm, Sweden

Hamed Farhadi