Patents by Inventor David Astély
David Astély has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20250220482Abstract: Methods, network node and wireless device for dynamic Channel State Information (CSI) reconfiguration, for example codebook reconfiguration, are disclosed. According to one aspect, a method in a network node includes signaling a first set of CSI feedback generation configuration parameters and a second set of CSI feedback generation configuration parameters by higher layer signaling, such as radio resource control (RRC) signaling. The method also includes signaling an updated set of CSI feedback generation configuration parameters to update the second set of CSI feedback generation configuration parameters by control signaling, such as at least one of downlink control information (DCI), and at least one medium access control (MAC) control element (CE).Type: ApplicationFiled: March 30, 2023Publication date: July 3, 2025Inventors: Xinlin ZHANG, David ASTELY, Mattias FRENNE
-
Publication number: 20250062872Abstract: A method performed by a network node. The method includes determining to transmit a first reference signal. The method also includes determining whether a second reference signal should be transmitted. The method also includes transmitting the first reference signal using a first precoder. The method also includes transmitting the second reference signal as a result of determining that the second reference signal should be transmitted. The second reference signal is transmitted using a second precoder that is complementary to the first precoder such that the second reference signal occupies a first part of a channel not occupied by the first reference signal.Type: ApplicationFiled: December 15, 2021Publication date: February 20, 2025Inventors: Karl WERNER, David ASTELY, Petter ERSBO, Eric NORDSTRÖM, Niklas WERNERSSON
-
Publication number: 20250023618Abstract: There is provided mechanisms for interference suppression in a wireless communication network. A method is performed by a network node. The method includes determining that uplink sounding is to be performed for a first user equipment served by the network node and located at a location. The method includes providing a notification to a neighbor network node and the first user equipment to participate in the uplink sounding of the first user equipment. The method includes determining to perform a downlink transmission towards a seconduser equipment served by the network node and located at the location. The method includes providing an indication for interference suppression at the location to the neighbor network node before performing the downlink transmission.Type: ApplicationFiled: November 30, 2021Publication date: January 16, 2025Inventors: Niklas JALDÉN, Arne SIMONSSON, David ASTELY
-
Publication number: 20240113752Abstract: There is provided mechanisms for precoded transmission of data. A method is performed by a network node. The method comprises obtaining an indication that a CSI report as received from a user equipment served by the network node is of a quality below a quality threshold. The method comprises, in response thereto, transmitting, whilst applying at least one precoder, data towards the user equipment. The at least one precoder is a function of at least one CSI value reported from the user equipment earlier than the CSI report with quality being below the quality threshold was received.Type: ApplicationFiled: December 15, 2020Publication date: April 4, 2024Applicant: Telefonaktiebolaget LM Ericsson (pobl)Inventors: Petter ERSBO, Karl WERNER, David ASTELY, Jeong Hun KIM, Zhao WANG
-
Publication number: 20220337705Abstract: The invention discloses a method for a cellular communications system, in which traffic is sent in frames, each frame comprising a first number of subframes, with a second number of said subframes being available for at least either uplink or downlink traffic. At least one of said second number of subframes is made to comprise at least three parts, as follows: One part which is utilized for uplink traffic, One part which is utilized for downlink traffic, One part which is utilized as a guard period, with said guard period part being scheduled between the uplink and the downlink parts. The duration of at least two of said three parts may be varied to fit the current system need.Type: ApplicationFiled: July 7, 2022Publication date: October 20, 2022Inventors: David ASTELY, Stefan PARKVALL, Per Johan Anders NYSTRÖM
-
Publication number: 20220069955Abstract: A mobile terminal camps in a first cell associated with a first reference signal with a first physical structure that relates to a first Time Division Duplex (TDD) allocation of sub-frames for uplink and downlink transmission. The first reference signal is carried by the downlink sub-frames. The mobile terminal detects a broadcast indication of a second physical structure for carrying a second reference signal that relates to a second allocation of sub-frames for uplink and downlink transmissions that differs from the first allocation. The downlink sub-frames according to the second allocation carry the second reference signal. The mobile terminal measures the second reference signal of a neighbor cell as carried by the second physical structure.Type: ApplicationFiled: November 11, 2021Publication date: March 3, 2022Inventors: Stefan PARKVALL, David ASTELY, Erik DAHLMAN
-
Publication number: 20220061102Abstract: Devices and methods for transmitting data on a radio channel comprise jointly encoding a preamble format with a first random access configuration, thereby forming an extended random access configuration represented by a set of bits. The first random access configuration comprises a combination of a density value and a version index. Each preamble format is associated with a plurality of version indexes.Type: ApplicationFiled: November 3, 2021Publication date: February 24, 2022Inventors: Robert BALDEMAIR, David ASTELY
-
Publication number: 20210306127Abstract: Methods and apparatuses are disclosed for minimization of network node to network node interference in Time Division Duplex (TDD) network. According to one embodiment, a method in a network node for re-mote interference management includes receiving information indicating a position for a reference signal within a communication signal slot, the position being indicated being indicated relative to a reference point associated with a downlink-to-uplink switch; at least one of transmitting the reference signal and receiving the reference signal based at least in part on the received information; and determining whether remote interference is present based at least in part on at least one of the received reference signal and the received information indicating the position of the reference signal.Type: ApplicationFiled: August 7, 2019Publication date: September 30, 2021Inventors: Mårten SUNDBERG, Sebastian FAXÉR, David ASTELY
-
Publication number: 20210266057Abstract: The present disclosure relates to a method performed by a network node for beamforming, to a network node and to a system including a network node. One aspect of the disclosure provides a method (900) comprising: obtaining (910), at the network node (800), information relating to a plurality of signals received or transmitted using a set of receiving beams or a set of transmitting beams of the network node (800), each individual beam of the set having a unique beam direction; determining a set of candidate beams for use by the network node (800) for synchronisation signal, SS, transmission or random access channel, RACH, detection; based on the obtained information, selecting one or more of the determined candidate beams; and using the selected one or more of the determined candidate beams for SS transmission or RACH detection by the network node (800).Type: ApplicationFiled: August 10, 2018Publication date: August 26, 2021Inventors: Henrik Asplund, Arne SIMONSSON, David ASTELY
-
Publication number: 20210167841Abstract: There is provided mechanisms for generating cell-specific signals using an antenna array with dual-polarized antenna elements. A method is performed by a network device. The method comprises obtaining antenna weights for two sector-specific signals, each sector-specific signal giving rise to a respective sector-specific radiation pattern. The method comprises generating a first cell-specific signal, the first cell-specific signal giving rise to a first cell-specific radiation pattern, wherein antenna weights for the first cell-specific signal are determined such that the radiation pattern matches both sector-specific radiation patterns.Type: ApplicationFiled: January 21, 2016Publication date: June 3, 2021Applicant: Telefonaktiebolaget LM Ericsson (pubs)Inventors: Andreas NILSSON, David ASTELY, Niklas JALDÉN
-
Publication number: 20200052945Abstract: A method for signal distortion mitigation in a communication device with at least one transmitter in a communication system, generating a signal for transmission for each of the at least one transmitter; performing Peak-to-Average Power Ratio (PAPR) reduction and spectrum shaping of each of the generated signal to provide a distorted signal for transmission; determining signal distortions of the distorted signals, and precoding the determined signal distortions. The method further generating a composite signal for transmission based on the precoded determined signal distortions and the generated signal for transmission, to provide a composite signal, and transmitting the composite signal to at least one receiving communication device, wherein the precoding enables mitigating the signal distortion impact on the at least one receiver.Type: ApplicationFiled: June 14, 2017Publication date: February 13, 2020Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Shashi KANT, Eric NORDSTRÖM, David ASTELY
-
Publication number: 20200014503Abstract: A mobile terminal camps in a first cell associated with a first reference signal with a first physical structure that relates to a first Time Division Duplex (TDD) allocation of sub-frames for uplink and downlink transmission. The first reference signal is carried by the downlink sub-frames. The mobile terminal detects a broadcast indication of a second physical structure for carrying a second reference signal that relates to a second allocation of sub-frames for uplink and downlink transmissions that differs from the first allocation. The downlink sub-frames according to the second allocation carry the second reference signal. The mobile terminal measures the second reference signal of a neighbor cell as carried by the second physical structure.Type: ApplicationFiled: September 17, 2019Publication date: January 9, 2020Inventors: Stefan PARKVALL, David ASTELY, Erik DAHLMAN
-
Publication number: 20190215876Abstract: The invention relates to devices and methods for transmitting data on a radio channel comprising to jointly encode a preamble format with a first random access configuration, forming an extended random access configuration. The extended random access configuration is then transmitted on the radio channel.Type: ApplicationFiled: March 20, 2019Publication date: July 11, 2019Inventors: Robert BALDEMAIR, David ASTELY
-
Publication number: 20180316402Abstract: There is provided mechanisms for configuring an antenna system having individual antenna elements arranged in at least two antenna subarrays. Each pair of antenna subarrays has a respective first spatial separation. Each pair of the individual antenna elements has a respective second spatial separation. A method is performed by a network device. The method includes obtaining channel measurements for each of the at least two antenna subarrays. Channel covariance information between the subarrays using the obtained channel measurements is determined. Channel covariance information between all individual antenna elements of the antenna system is determined by interpolating the channel covariance information between the subarrays according to a spatial relation between all first spatial separations and all second spatial separations. Combining of the individual antenna elements of the antenna system is controlled based on the determined channel covariance information between all the individual antenna elements.Type: ApplicationFiled: November 23, 2015Publication date: November 1, 2018Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Niklas JALDÉN, Henrik ASPLUND, David ASTELY, Fredrik ATHLEY, Andreas NILSSON
-
Publication number: 20180241524Abstract: According to one aspect of the teachings herein, a base station (20) schedules the transmission of uplink reference signals by a wireless device (16) separately from scheduling uplink data transmissions by the device (16). The separate scheduling may be done at specific times, under specific conditions, and with respect to specific devices (16) or groups of devices (16). Separate scheduling allows, for example, the base station (20) to use smaller scheduling intervals that are possible when uplink reference signals are integrally included in any scheduled uplink data transmission. As a further advantage, the density or number of uplink reference signal transmissions by a given device (16) can be adapted, e.g., based on channel conditions, data transmission formats, etc.Type: ApplicationFiled: August 10, 2016Publication date: August 23, 2018Inventors: Mattias ANDERSSON, Niklas ANDGART, David ASTELY, Helka-Liina MÄÄTTANEN, Henrik SAHLIN
-
Publication number: 20180184300Abstract: Operations by a wireless communication network include obtaining information of available cell resources of cells in at least a segment of the wireless communications network, and the current operation state of each cell in the segment. The operations further include obtaining a current traffic demand in the segment, and obtaining previously stored spatial channel characteristics for wireless devices being associated with the cells in the segment. The spatial channel characteristics for at least one wireless device of the wireless device is given between the at least one wireless device and at least two cells in the segment. A determination is then made whether to affect the operation state of at least one of the cells or not according to the information of available cell resources, the current traffic demand, and the previously stored spatial channel characteristics.Type: ApplicationFiled: October 23, 2015Publication date: June 28, 2018Inventors: David ASTELY, Henrik ASPLUND, Niklas JALDÉN
-
Publication number: 20180041317Abstract: A method in a first wireless node for transmitting a reference signal is provided. The first wireless node operates in a wireless communications network. The first wireless node transmits the reference signal from at least two transmit antennas of the first wireless node. The reference signal is transmitted with a phase between the at least two transmit antennas indicating a desired phase related to radio conditions for reception of a transmission from a first radio node at the first wireless node. The reference signal is to be received and taken into account by one or more other radio nodes in the wireless communications network, e.g. when scheduling transmissions to other wireless nodes.Type: ApplicationFiled: February 19, 2015Publication date: February 8, 2018Inventors: Arne SIMONSSON, David ASTELY, Sara SANDBERG
-
Publication number: 20170311180Abstract: There is provided a method for shaping cells in a wireless communications network. The method is performed by a network node. The method comprises acquiring previously stored spatial channel characteristics for wireless devices (WDs), the WDs being associated with a set of radio access network nodes (RANNs), the of the WDs being measured between the at least one WD and at least two RANNs in the set of RANNs. The method comprises determining beam forming parameters for shaping cells for at least one RANN in the set of RANNs based on the acquired spatial channel characteristics such that at least a predetermined share of the WDs has a network coverage probability being higher than a predetermined threshold value. The method comprises notifying at least one of the RANNs in the set of RANNs of the determined beam forming parameters.Type: ApplicationFiled: October 6, 2014Publication date: October 26, 2017Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Niklas JALDÉN, Henrik ASPLUND, David ASTELY
-
Publication number: 20170288307Abstract: The invention discloses a beamforming method for polarized antenna array consisting of a plurality of antenna elements, applied to single layer beamforming or dual layer beamforming, which includes the steps: determining (201) first beamforming weights for phase compensation among the antenna elements within each polarization direction; determining (202) second beamforming weights for phase compensation between equivalent channels of two polarization directions; and calculating (203) hybrid beamforming weights as product of the first beamforming weights and the second beamforming weights. A beamforming apparatus for polarized antenna array is also provided in the invention as well as a radio communication device and a system thereof With the invention, the single-layer and dual-layer beamforming weights are determined for the cross-polarized antenna array without requiring full channel knowledge or the aid of PMI. Computation complexity is lowered and full power amplifier utilization can be achieved.Type: ApplicationFiled: June 19, 2017Publication date: October 5, 2017Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Yang HU, David ASTELY, Zhiheng GUO, Muhammad lmadur RAHMAN, Hai WANG, Ruiqi ZHANG
-
Publication number: 20170279969Abstract: The invention discloses a method for a cellular communications system, in which traffic is sent in frames, each frame comprising a first number of subframes, with a second number of said subframes being available for at least either uplink or downlink traffic. At least one of said second number of subframes is made to comprise at least three parts, as follows: One part which is utilized for uplink traffic, One part which is utilized for downlink traffic, One part which is utilized as a guard period, with said guard period part being scheduled between the uplink and the downlink parts. The duration of at least two of said three parts may be varied to fit the current system need.Type: ApplicationFiled: June 9, 2017Publication date: September 28, 2017Inventors: David ASTELY, Stefan PARKVALL, Per Johan Anders NYSTRÖM