公开(公告)号：US11817918B2

公开(公告)日：2023-11-14

申请号：US17272937

申请日：2019-07-25

Applicant: Solid, Inc.

Inventor： Ho Sik Jang ,  Hoo Pyo Hong ,  Hyong Ho Kim ,  Dong Hee Kwon ,  Kyung Eun Han ,  Jin Hwa Ku ,  Dae Young Kim ,  Young Man Cho

IPC: H04B7/022 ,  H04B17/11 ,  H04B17/15 ,  H04B17/29 ,  H04B7/26 ,  H04Q3/00

CPC classification number: H04B7/022 ,  H04B7/2609 ,  H04B17/11 ,  H04B17/15 ,  H04B17/29 ,  H04Q3/0075 ,  H04Q3/0087 ,  H04Q2213/13098 ,  H04Q2213/145 ,  H04Q2213/167

Abstract: A distributed antenna system of the present invention implements duplication by a method of configuring a first headend unit and a second headend unit in an active state or in a standby state and connecting a hub unit or a remote unit to the first headend unit and the second headend unit and by a method of connecting, through a redundancy link, a hub unit or remote units of a branch group branched from and connected to each headend unit, activating the redundancy link according to the control of an active headend unit when an error occurs in a frame transmission path, and changing logical port states of a hub unit or remote units that cannot transmit frames due to the error in order to change the frame transmission path so that frame transmission is possible through the activated redundancy link.

公开(公告)号：US10374687B2

公开(公告)日：2019-08-06

申请号：US15598367

申请日：2017-05-18

Applicant: SOLiD, INC.

Inventor： Kyung Eun Han

IPC: H04B7/155 ,  H04W52/46 ,  H04M1/00

Abstract: A base station signal matching device configured to receive a base station signal from a base transceiver station (BTS), the base station signal matching device is embedded in a relay device, and the base station signal matching device includes a signal attenuation unit configured to receive the base station signal and attenuate the input power level of the base station signal; and a signal matching unit configured to receive the base station signal passing through the signal attenuation unit to match the base station signal suitable for signal processing of the relay device.

公开(公告)号：US09735872B2

公开(公告)日：2017-08-15

申请号：US14411475

申请日：2013-12-19

Applicant: SOLID, INC.

Inventor： Young Ju You ,  Kyung Eun Han

IPC: H04B10/00 ,  H04J14/02 ,  H04W4/00 ,  H04B7/15 ,  H04N13/02 ,  H04N7/18 ,  H04B10/2575 ,  H04B10/29 ,  H04W88/08 ,  H04J3/00

CPC classification number: H04B10/25752 ,  H04B10/25753 ,  H04B10/29 ,  H04J3/00 ,  H04J14/02 ,  H04W88/085

Abstract: A remote device of an optical relay system includes first and second remote driving units each extracting transmission signals of different frequency bands from downlink Radio Frequency (RF) signals provided from an optical conversion unit and outputting the transmission signals; and a downlink path control unit receiving the downlink RF signals from the optical conversion unit and transmitting the downlink RF signals to the second remote driving unit through the first remote driving unit, or transmitting the downlink RF signals to the second remote driving unit by bypassing the first remote driving unit.

公开(公告)号：US20220352929A1

公开(公告)日：2022-11-03

申请号：US17272937

申请日：2019-07-25

Applicant: Solid, Inc.

Inventor： Ho Sik Jang ,  Hoo Pyo Hong ,  Hyong Ho Kim ,  Dong Hee Kwon ,  Kyung Eun Han ,  Jin Hwa Ku ,  Dae Young Kim ,  Young Man Cho

IPC: H04B7/022 ,  H04B7/26 ,  H04Q3/00 ,  H04B17/11 ,  H04B17/15 ,  H04B17/29

Abstract: A distributed antenna system of the present invention implements duplication by a method of configuring a first headend unit and a second headend unit in an active state or in a standby state and connecting a hub unit or a remote unit to the first headend unit and the second headend unit and by a method of connecting, through a redundancy link, a hub unit or remote units of a branch group branched from and connected to each headend unit, activating the redundancy link according to the control of an active headend unit when an error occurs in a frame transmission path, and changing logical port states of a hub unit or remote units that cannot transmit frames due to the error in order to change the frame transmission path so that frame transmission is possible through the activated redundancy link.

公开(公告)号：US09660717B2

公开(公告)日：2017-05-23

申请号：US14411486

申请日：2014-08-14

Applicant: SOLID, INC.

Inventor： Kyung Eun Han

IPC: H04M1/00 ,  H04B7/155 ,  H04W52/46

CPC classification number: H04B7/15507 ,  H04B7/155 ,  H04B7/15535 ,  H04W52/46

Abstract: A base station signal matching device configured to receive a base station signal from a base transceiver station (BTS), the base station signal matching device is embedded in a relay device, and the base station signal matching device includes a signal attenuation unit configured to receive the base station signal and attenuate the input power level of the base station signal; and a signal matching unit configured to receive the base station signal passing through the signal attenuation unit to match the base station signal suitable for signal processing of the relay device.

公开(公告)号：US10317447B2

公开(公告)日：2019-06-11

申请号：US15865749

申请日：2018-01-09

Applicant: SOLiD, INC.

Inventor： Yeong Shin Yeo ,  Kyung Eun Han

IPC: G01R23/00 ,  G01R23/02 ,  G01R31/08 ,  G01R21/00 ,  H04B7/26 ,  H04W24/08 ,  H04W24/10 ,  G01R29/10 ,  G01R23/20

Abstract: A passive intermodulation (PIM) measurement device for measuring a PIM in at least one of installation equipments and a distribution network within a distributed antenna system (DAS), the PIM measurement device included in a relay unit of the DAS the PIM measurement device includes a pulse generation unit a PIM detection unit and a controller. The pulse generation unit generates a two-tone pulse signal having frequencies different from each other. The PIM detection unit detects intermodulation (IM) signals fed back from the installation equipments or the distribution network in the DAS corresponding to the propagation of the two-tone pulse signal. The controller detects PIM generation information in the DAS based on the fed-back IM signal.

公开(公告)号：US09897638B2

公开(公告)日：2018-02-20

申请号：US14583558

申请日：2014-12-26

Applicant: SOLID, INC.

Inventor： Yeong Shin Yeo ,  Kyung Eun Han

IPC: G01R23/02 ,  G01R31/08 ,  G01R21/00 ,  H04B7/26 ,  G01R29/10 ,  G01R23/20

CPC classification number: G01R29/10 ,  G01R23/20

Abstract: A passive intermodulation (PIM) measurement device for measuring a PIM in at least one of installation equipments and a distribution network within a distributed antenna system (DAS), the PIM measurement device included in a relay unit of the DAS, the PIM measurement device includes a pulse generation unit, a PIM detection unit and a controller. The pulse generation unit generates a two-tone pulse signal having frequencies different from each other. The PIM detection unit detects intermodulation (IM) signals fed back from the installation equipments or the distribution network in the DAS, corresponding to the propagation of the two-tone pulse signal. The controller detects PIM generation information in the DAS, based on the fed-back IM signal.