公开(公告)号：US20180017464A1

公开(公告)日：2018-01-18

申请号：US15539267

申请日：2015-12-22

Applicant: SOLiD, INC.

Inventor： Keewoon NA

IPC: G01M11/00 ,  H04B10/50 ,  H04B10/079 ,  H04B10/572

CPC classification number: G01M11/3127 ,  G01M11/3145 ,  G01M11/3181 ,  G01M11/331 ,  H04B10/071 ,  H04B10/0795 ,  H04B10/0799 ,  H04B10/503 ,  H04B10/572

Abstract: An optical line testing device for measuring at least a cutting position of an optical line according to the present invention includes: a first wavelength tunable laser source configured to generate a first optical signal in which a plurality of wavelengths appear alternately and periodically; a second wavelength tunable laser source configured to generate a second optical signal which is identical to the first optical signal but has an adjustable delay time; and an interferometer configured to cause interference between a reflected optical signal, corresponding to the first optical signal, which is returning after having been emitted to the optical line, and the second optical signal to output an interference signal.

公开(公告)号：US20170288767A1

公开(公告)日：2017-10-05

申请号：US15624770

申请日：2017-06-16

Applicant: SOLiD, INC.

Inventor： Yongki CHO

IPC: H04B7/155 ,  H04B7/04

CPC classification number: H04B7/15507 ,  H04B7/04 ,  H04B7/15535

Abstract: A base station signal matching device is a base station signal matching device mounted in a distributed antenna system for amplifying a received base station signal and transmitting the amplified base station signal to a user terminal. The base station signal matching device includes a first unit for generating first and second branch base station signals by using a power division function based on the base station signal, and transmitting the second branch base station signal to a third unit, and a second unit for matching the first branch base station signal to be suitable for signal processing of the distributed antenna system.

公开(公告)号：US20170257157A1

公开(公告)日：2017-09-07

申请号：US15598367

申请日：2017-05-18

Applicant: SOLiD, INC.

Inventor： Kyung Eun HAN

IPC: 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：US09728910B2

公开(公告)日：2017-08-08

申请号：US14411480

申请日：2014-04-15

Applicant: SOLID, INC.

Inventor： Dong Won Lee

IPC: H01R24/40 ,  H01R24/38 ,  H01R13/508 ,  H01R13/52 ,  H01R103/00

CPC classification number: H01R24/38 ,  H01R13/508 ,  H01R13/5219 ,  H01R24/40 ,  H01R2103/00

Abstract: The present invention relates to a coaxial connector. According to the present invention, there is provided a coaxial connector which is installed for electrical connection of a communication module, and includes a first connector in which an insulator through which a conductor penetrates is installed inside a first housing, and a conductive gasket is seated between the first housing and the insulator; and a second connector which is coupled so that a front end comes into close contact with the conductive gasket.

公开(公告)号：US20170215153A1

公开(公告)日：2017-07-27

申请号：US14411487

申请日：2014-10-15

Applicant: SOLID, INC.

Inventor： Yeong Shin Yeo ,  Bong Cheol Na

IPC: H04W52/22 ,  H04B10/2575 ,  H04W52/24 ,  H04L12/26 ,  H04B17/327

CPC classification number: H04W52/228 ,  H04B7/04 ,  H04B7/2609 ,  H04B10/25753 ,  H04B17/327 ,  H04L43/18 ,  H04W52/245

Abstract: A headend device includes a spectrum analysis unit configured to analyze a frequency spectrum of a plurality of base station signals to detect characteristic information of the plurality of the base station signals, a control unit configured to generate a control signal to control a power of the plurality of the base station signals on the basis of the characteristic information detected, and a plurality of RF units configured to receive at least one of the plurality of the base station signals and adjust the power of the base station signals received according to the control signal and output the power-adjusted base station signals.

公开(公告)号：US20170195073A1

公开(公告)日：2017-07-06

申请号：US15395240

申请日：2016-12-30

Applicant: SOLiD, INC.

Inventor： Nagwon KWON ,  Hyunchae KIM

IPC: H04B17/40 ,  H04W52/24 ,  H04W52/46

CPC classification number: H04B17/40 ,  H04B7/155 ,  H04B17/309 ,  H04W52/246 ,  H04W52/46

Abstract: A repeater including an analog attenuator configured to attenuate an analog signal in response to a first control signal; an analog to digital converter (ADC) configured to convert the attenuated analog signal into a digital signal; a digital attenuator configured to attenuate the digital signal in response to a second control signal; and an attenuation controller configured to calculate average power and peak power of the attenuated digital signal, determine an attenuation value for each value of the calculated average power and peak power, and generate at least one of the first and second control signals based on the determined attenuation values.

公开(公告)号：US20170187561A1

公开(公告)日：2017-06-29

申请号：US15391183

申请日：2016-12-27

Applicant: SOLiD, INC.

Inventor： Nagwon KWON ,  Hyunchae KIM

IPC: H04L27/26 ,  H04B7/15 ,  H04W52/36

CPC classification number: H04L27/2623 ,  H04B7/15 ,  H04L27/2624 ,  H04W52/36

Abstract: According to an aspect of the inventive concept, there is provided a crest factor reduction (CFR) core, including: a clipper clipping an input signal; a delay unit delaying the input signal; a first subtractor subtracting the clipped input signal from the delayed input signal; an error shaping filter filtering the subtracted signal for shaping an error which occurs by the clipping of the input signal; a digital filter filtering the input signal for cancelling noise of the input signal; and a second subtractor subtracting the filtered subtracted signal from the filtered input signal.

公开(公告)号：US20170187550A1

公开(公告)日：2017-06-29

申请号：US15459774

申请日：2017-03-15

Applicant: SOLiD, INC.

Inventor： Doyoon KIM ,  Kwangnam SEO

IPC: H04L25/02 ,  H04L27/26

CPC classification number: H04L25/0262 ,  H04L25/02 ,  H04L27/2623

Abstract: A peak cancellation-crest factor reduction (PC-CFR) device includes a clipping unit configured to output a clipping error signal by clipping amplitude values of a first baseband complex signal based on a predetermined threshold value; a peak value determination unit configured to receive the clipping error signal, and determine a first amplitude value as a peak value when the first amplitude value is greater than a second amplitude value input before the first amplitude value and a third amplitude value input after the first amplitude value among amplitude values of the clipping error signal; a cancellation pulse generator (CPG) allocation unit configured to allocate the peak value to a CPG; and a subtractor configured to subtract a cancellation pulse generated from the CPG from the first baseband complex signal and output a second baseband complex signal with a reduced peak-to-average power ratio (PAPR).

公开(公告)号：US20170180186A1

公开(公告)日：2017-06-22

申请号：US15451683

申请日：2017-03-07

Applicant: SOLiD, INC.

Inventor： Doyoon KIM

IPC: H04L12/24 ,  H04W24/04 ,  H04B17/29 ,  H04B7/04 ,  H04W24/08 ,  H04B17/15

CPC classification number: H04L41/06 ,  H04B7/04 ,  H04B17/00 ,  H04B17/15 ,  H04B17/29 ,  H04W24/04 ,  H04W24/08 ,  H04W24/10

Abstract: A monitoring device for a distributed antenna system including at least two node units communicatively coupled to each other transmits, to at least one target node unit among the node units, a data dump command for a first target signal passing through a first signal path in the target node unit. The monitoring device receives, from the target node unit, response data corresponding to the data dump command. The monitoring device generates first quality information indicative of the quality of the first target signal by using the response data.

公开(公告)号：US20170117977A1

公开(公告)日：2017-04-27

申请号：US15401203

申请日：2017-01-09

Applicant: SOLID, INC.

Inventor： Hyoungho KIM ,  Doyoon KIM ,  Yeongshin YEO

IPC: H04B17/364 ,  H04W24/06 ,  H04B7/04

CPC classification number: H04B17/364 ,  H04B1/40 ,  H04B7/024 ,  H04B7/04 ,  H04L43/0864 ,  H04W24/06 ,  H04W88/085

Abstract: A node unit of distributed antenna system, the node unit comprises a delay measuring part configured to transmit a first test signal for delay measurement to an upper adjacent node unit and detect the first test signal looped back via the upper adjacent node unit and measure a round trip delay between the node unit and the upper adjacent node unit, and a delay providing part disposed on a signal transmission path through which a second test signal for delay measurement, to be transmitted from a lower adjacent node unit, is to be looped back to the lower adjacent node unit, and configured to provide a delay corresponding to the round trip delay.