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    DESIGN METHOD OF BEACON-BASED POSITIONING SYSTEM
    3.
    发明申请
    DESIGN METHOD OF BEACON-BASED POSITIONING SYSTEM 有权

    公开(公告)号：US20220065973A1

    公开(公告)日：2022-03-03

    申请号：US17006764

    申请日：2020-08-28

    Applicant: SOLiD, Inc.

    Inventor： Young Man Cho ,  Yvonne Hee Jun Cho

    IPC: G01S1/04 ,  G01S1/10 ,  H04B17/318

    Abstract: Disclosed is a beacon-based positioning system. A beacon position in which a beacon is installable is defined in a target space, and a path loss model of radio frequency (RF) signals between all beacon positions and all observation positions of a scanner is determined. Among all possible installation plans for the beacon positions, an installation plan in which different beacon signals, whose RSSIs calculated using the path loss model have significant values, are received in a number greater than or equal to a minimum reference number and a total number of the beacons installed is minimum is determined as an optimal installation plan. The optimization problem of determining the optimal installation plan may be expressed by binary linear programming.

    OpenFlow based distributed antenna system
    4.
    发明授权
    OpenFlow based distributed antenna system 有权

    公开(公告)号：US11252092B2

    公开(公告)日：2022-02-15

    申请号：US17026314

    申请日：2020-09-21

    Applicant: SOLiD Inc.

    Inventor： Dong Hee Kwon ,  Hoo Pyo Hong ,  Young Man Cho

    IPC: H04L12/813 ,  H04L47/20 ,  H04B7/022 ,  H04L41/0803 ,  H04L41/0893 ,  H04L45/02 ,  H04W88/08 ,  H04L45/64 ,  H04L45/302 ,  H04L47/2441

    Abstract: Disclosed is a distributed antenna system (DAS). The DAS includes a DAS controller, which is an OpenFlow controller, and one or more DAS units in order to dynamically control a traffic transmission policy of the DAS units using an OpenFlow protocol, wherein the DAS controller generates and changes a traffic transmission policy by reflecting a traffic transmission policy change request by operator manipulation or a software-defined network supporting application and a need for changing of the traffic transmission policy according to a status of the DAS unit and a status of a port, and the DAS unit transmits received traffic to a destination according to the policy.

    Cellular communication system having a set of small cells as a signal source
    6.
    发明授权
    Cellular communication system having a set of small cells as a signal source 有权

    公开(公告)号：US10727946B2

    公开(公告)日：2020-07-28

    申请号：US15692341

    申请日：2017-08-31

    Applicant: SOLiD Inc.

    Inventor： Young Man Cho ,  Hee Hwan Kwak

    IPC: H04B10/2575 ,  H04W52/02 ,  H04W80/02 ,  H04W88/08

    Abstract: An analog distributed antenna system having a set of small cells as a signal source is provided. A proposed cellular communication system includes an upper small cell unit including upper protocol processors configured to process an upper first part of a protocol stack of a small cell, a lower small cell unit including lower protocol processors configured to process a remaining second part of the protocol stack of the small cell, and a first matching switch configured to respectively match the lower protocol processors to a plurality of remote units. According to one aspect, the cellular communication system includes a common controller configured to control activation of the plurality of upper protocol processors of the upper small cell unit and the plurality of lower protocol processors of the lower small cell unit according to a required service capacity and appropriately control an operation of the first matching switch.

    Distributed antenna system
    7.
    发明授权
    Distributed antenna system 有权

    公开(公告)号：US11799588B2

    公开(公告)日：2023-10-24

    申请号：US17149699

    申请日：2021-01-14

    Applicant: SOLiD Inc.

    Inventor： Young Man Cho

    IPC: H04B7/024 ,  H04B17/309 ,  H04L27/00 ,  H04L1/00

    CPC classification number: H04L1/0077 ,  H04B7/024 ,  H04B17/309 ,  H04L27/0004

    Abstract: A technology related to a distributed antenna system is disclosed. In an exemplary embodiment, a distributed antenna system may include a master unit and a plurality of remote units. The master unit may be interfaced with a wireless communications network and perform a bidirectional simultaneous digital radio frequency distribution of a wireless signal. The plurality of remote units may be each coupled to the master unit, and each perform a wireless transmission or reception of a split radio frequency signal to or from terminals located within a coverage. The master unit and the plurality of remote units may transmit or receive digital radio frequency signals in a wavelet transform domain. The master unit may determine whether the digital radio frequency signal, transmitted by each of the remote units, is normal, and merge the digital radio frequency signals.

    Method of beacon-based positioning system
    9.
    发明授权
    Method of beacon-based positioning system 有权

    公开(公告)号：US11567158B2

    公开(公告)日：2023-01-31

    申请号：US17006764

    申请日：2020-08-28

    Applicant: SOLiD, Inc.

    Inventor： Young Man Cho ,  Yvonne Hee Jun Cho

    IPC: G01S1/04 ,  G01S5/02 ,  H04B17/318 ,  H04W16/18 ,  H04W16/20

    Abstract: Disclosed is a beacon-based positioning system. A beacon position in which a beacon is installable is defined in a target space, and a path loss model of radio frequency (RF) signals between all beacon positions and all observation positions of a scanner is determined. Among all possible installation plans for the beacon positions, an installation plan in which different beacon signals, whose RSSIs calculated using the path loss model have significant values, are received in a number greater than or equal to a minimum reference number and a total number of the beacons installed is minimum is determined as an optimal installation plan. The optimization problem of determining the optimal installation plan may be expressed by binary linear programming.

    Cellular communication system having a set of small cells as a signal source
    10.
    发明授权
    Cellular communication system having a set of small cells as a signal source 有权

    公开(公告)号：US11381311B2

    公开(公告)日：2022-07-05

    申请号：US16906102

    申请日：2020-06-19

    Applicant: SOLiD Inc.

    Inventor： Young Man Cho ,  Hee Hwan Kwak

    IPC: H04B10/2575 ,  H04W52/02 ,  H04W80/02 ,  H04W88/08

    Abstract: An analog distributed antenna system having a set of small cells as a signal source is provided. A proposed cellular communication system includes an upper small cell unit including upper protocol processors configured to process an upper first part of a protocol stack of a small cell, a lower small cell unit including lower protocol processors configured to process a remaining second part of the protocol stack of the small cell, and a first matching switch configured to respectively match the lower protocol processors to a plurality of remote units. According to one aspect, the cellular communication system includes a common controller configured to control activation of the plurality of upper protocol processors of the upper small cell unit and the plurality of lower protocol processors of the lower small cell unit according to a required service capacity and appropriately control an operation of the first matching switch.

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