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    Beam management procedures for network nodes and terminal devices
    1.
    发明授权
    Beam management procedures for network nodes and terminal devices 有权

    公开(公告)号：US12126421B2

    公开(公告)日：2024-10-22

    申请号：US17916392

    申请日：2020-03-30

    Applicant: Telefonaktiebolaget LM Ericsson (publ)

    Inventor： Sven Petersson ,  Andreas Nilsson

    IPC: H04B7/10 ,  H04B7/06 ,  H04B7/08

    CPC classification number: H04B7/10 ,  H04B7/0628 ,  H04B7/088

    Abstract: There is provided mechanisms for performing a beam management procedure. A method is performed by a network node. The method comprises obtaining configuration information from a terminal device for which the network node provides network access. The configuration information specifies that the terminal device is in need for evaluating different polarization states in different time units during the beam management procedure. The method comprises performing the beam management procedure with the terminal device. The beam management procedure involves the network node to, per slot, transmit reference signals according to a reference signal transmission scheme. The reference signal transmission scheme depends on the obtained configuration information.

    Transmission of Single-Port Reference Signal Resources
    3.
    发明公开
    Transmission of Single-Port Reference Signal Resources 审中-公开

    公开(公告)号：US20240072964A1

    公开(公告)日：2024-02-29

    申请号：US18280276

    申请日：2021-03-05

    Applicant: Telefonaktiebolaget LM Ericsson (publ)

    Inventor： Andreas Nilsson ,  Pär Ankel ,  Sven Petersson ,  Fredrik Athley

    IPC: H04L5/00

    CPC classification number: H04L5/005 ,  H04L5/0007

    Abstract: There is provided mechanisms for transmission of single-port reference signal resources. A method is performed by a network node. The method comprises transmitting, as part of performing a beam selection procedure with a user equipment, two single-port reference signal resources. A first of the two single-port reference signal resources is transmitted over a first polarization. A second of the two single-port reference signal resources is transmitted over a second polarization. The two single-port reference signal resources are time-wise overlapping when transmitted.

    Transmission of Reference Signal Resources
    4.
    发明公开
    Transmission of Reference Signal Resources 审中-公开

    公开(公告)号：US20240056161A1

    公开(公告)日：2024-02-15

    申请号：US18280284

    申请日：2021-09-02

    Applicant: Telefonaktiebolaget LM Ericsson (publ)

    Inventor： Pär Ankel ,  Sven Petersson ,  Andreas Nilsson ,  Fredrik Athley

    IPC: H04B7/06 ,  H04B7/08

    CPC classification number: H04B7/06966 ,  H04B7/088

    Abstract: The present invention relates to a first network device (20; 51) for transmission of reference signal resources comprising an antenna arrangement (61) having at least two panel (62, 63) configured to generate beams (53) in different directions. The first network device (20; 51) comprises a control circuitry (210) configured to transmit, as part of performing a beam selection procedure with a second network device (30a; 52), a first reference signal resource in one or more beams from a first of the at least two panel, and a second reference signal resource in one or more beams from a second of the at least two panel. The one or more beams from the first of the two panels is different from the one or more beams from the second of the two panels, and the first reference signal resource is time-wise overlapping with the second reference signal resource when transmitted.

    Angle of arrival estimation in a radio communications network
    6.
    发明授权
    Angle of arrival estimation in a radio communications network 有权

    公开(公告)号：US11550017B2

    公开(公告)日：2023-01-10

    申请号：US15540628

    申请日：2017-06-02

    Applicant: Telefonaktiebolaget LM Ericsson (publ)

    Inventor： Fredrik Athley ,  Andreas Nilsson ,  Sven Petersson

    IPC: G01S3/32 ,  H04B7/06 ,  H04W16/28 ,  G01S3/04 ,  G01S3/20 ,  H01Q3/28 ,  H01Q3/36

    Abstract: There is provided mechanisms for estimating angle of arrival of a radio signal in a radio communications network. A method is performed by a receiving radio transceiver device. The method comprises obtaining measurements of the radio signal as received in two receive beams covering a given angular sector. The two receive beams are created by analog beamforming in an antenna array. The receive beams have different complex beam patterns and at any angle within the given angular sector at most one of the complex beam patterns has gain below a threshold. The method comprises estimating the angle of arrival of the radio signal by comparing a complex amplitude of the measurements in the two receive beams to a discriminator function.

    Active antenna system
    9.
    发明授权
    Active antenna system 有权

    公开(公告)号：US10911963B1

    公开(公告)日：2021-02-02

    申请号：US16872141

    申请日：2020-05-11

    Applicant: Telefonaktiebolaget LM Ericsson (publ)

    Inventor： Sven Petersson ,  Bo Hagerman ,  Martin Johansson ,  Stefan Johansson

    IPC: H04B1/02 ,  H04W16/28 ,  H01Q3/00 ,  H01Q3/34 ,  H01Q3/28

    Abstract: The present invention relates to an active antenna system, AAS, for controlling coverage in a telecommunication network, and the AAS comprising a plurality of subarrays each having multiple radiating elements. The AAS is configured to provide coverage in a coverage angular range and the plurality of subarrays comprising at least two types of subarrays. The at least two types of subarrays comprises: a first type of subarray with a first radiation pattern having at least a first angular region with gain below a first threshold value, and a second type of subarray with a second radiation pattern having at least a second angular region with gain below a second threshold value, wherein the second radiation pattern deviates from the first radiation pattern and the first angular region in the first radiation pattern differs from the second angular region in the second radiation pattern.

    Estimation of channel conditions
    10.
    发明授权
    Estimation of channel conditions 有权

    公开(公告)号：US10886986B2

    公开(公告)日：2021-01-05

    申请号：US16592412

    申请日：2019-10-03

    Applicant: Telefonaktiebolaget LM Ericsson (publ)

    Inventor： Fredrik Athley ,  Andreas Nilsson ,  Sven Petersson

    IPC: H04B7/06 ,  H04B7/0456 ,  H04B7/08 ,  H04B7/0417 ,  H04L25/02 ,  H04L5/00

    Abstract: There is provided mechanisms for obtaining channel conditions per antenna element of an antenna array comprising N antenna elements. The antenna array is configured for communications using orthogonal sub-carriers. A method is performed by a radio transceiver device. The method comprises obtaining channel conditions of a radio propagation channel per sub-carrier for signals received on the sub-carriers by the antenna array. A set of receiving entities are associated with the sub-carriers in an interleaved manner such that each receiving entity is interleaved over a respective disjoint subset of sub-carriers. The method comprises transforming the channel conditions at least for those sub-carriers located within a coherence bandwidth of the radio propagation channel to channel conditions for the N antenna elements by using a relation that maps the receiving entities to the N antenna elements.

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