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    Compression and decompression of delay profile
    1.
    发明授权
    Compression and decompression of delay profile 有权

    公开(公告)号：US12034461B2

    公开(公告)日：2024-07-09

    申请号：US17795333

    申请日：2020-03-06

    Applicant: Telefonaktiebolaget LM Ericsson (publ)

    Inventor： Henrik Rydén ,  Roy Timo ,  Maksym Girnyk ,  Hamed Farhadi

    IPC: H03M7/30 ,  G01S5/00 ,  H04L25/02 ,  H04W64/00

    CPC classification number: H03M7/30 ,  G01S5/0036 ,  H04L25/0212 ,  H04L25/0254 ,  H03M7/3059 ,  H03M7/70 ,  H04W64/006

    Abstract: 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.

    REPORTING OF COEFFICIENTS FOR CHANNEL STATE INFORMATION
    3.
    发明公开
    REPORTING OF COEFFICIENTS FOR CHANNEL STATE INFORMATION 审中-公开

    公开(公告)号：US20230224006A1

    公开(公告)日：2023-07-13

    申请号：US18118639

    申请日：2023-03-07

    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

    Inventor： Sebastian Faxér ,  Roy Timo ,  Niklas Wernersson ,  Maksym Girnyk ,  Zhao Wang

    IPC: H04B7/06 ,  H04B7/0456

    CPC classification number: H04B7/0626 ,  H04B7/0478

    Abstract: The disclosure includes a host operating in a communication system to provide an over-the-top (OTT) service. The host includes processing circuitry configured to initiate transmission of user data to a network node in a cellular network to a user equipment (UE). The network node is configured to receive a CSI report for a downlink channel from a wireless device and transmit the user data from the host to the UE to provide the OTT service based on the CSI report. The CSI report includes a set of reported coefficients; an indication of how the network node is to interpret the set of reported coefficients, wherein the indication of how the network node is to interpret the set of reported coefficients indicates the set of reported coefficients as a subset of a set of candidate reported coefficients; and an indication of a payload size of the set of the reported coefficients.

    Compression and Decompression of Downlink Channel Estimates
    10.
    发明申请
    Compression and Decompression of Downlink Channel Estimates 有权

    公开(公告)号：US20220149904A1

    公开(公告)日：2022-05-12

    申请号：US17435178

    申请日：2019-03-06

    Applicant: Telefonaktiebolaget LM Ericsson (publ)

    Inventor： Roy Timo ,  Sebastian Faxér ,  Niklas Wernersson ,  Simon Järmyr

    IPC: H04B7/0452 ,  H03M7/30 ,  H04W72/04 ,  H04B7/0456 ,  H04L25/49

    Abstract: A network node (501) determines parameters (503) indicating a compression function for compressing downlink channel estimates, and a decompression function. The network node transmits the parameters, receives compressed downlink channel estimates (504), and decompresses the compressed downlink channel estimates using the decompression function. A terminal device (502) receives the parameters, forms the compression function, compresses downlink channel estimates using the compression function, and transmits the compressed downlink channel estimates. The compression function comprises a first function formed based on at least some of the parameters, a second function which is non-linear, and a quantizer. The first function is configured to receive input data, and to reduce a dimension of the input data. The decompression function comprises a first function configured to receive input data and provide output data in a higher dimensional space than the input data, and a second function which is non-linear.

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