-
公开(公告)号：US20180358936A1
公开(公告)日：2018-12-13
申请号：US15540668
申请日：2015-12-30
Applicant: SOLiD, INC.
Inventor： Hwansun LEE , Jitaek PARK
CPC classification number: H03F1/52 , H03F1/0288 , H03F3/211 , H03F3/68 , H03F3/72 , H03F2200/211 , H03F2200/426 , H04B7/15535
Abstract: According to one mode of the inventive concept, an amplification device includes a first amplification unit configured to amplify an input signal when a power level of the input signal is within a first range, a second amplification unit configured to amplify the input signal when the power level of the input signal is within a second range, and an abnormality sensing unit configured to sense an occurrence of an abnormality in the second amplification unit. The abnormality sensing unit senses reverse power regarding an output of the second amplification unit to generate a sensed voltage and compares the sensed voltage with a reference voltage to sense whether an abnormality occurs in the second amplification unit.
-
公开(公告)号：US10139310B2
公开(公告)日：2018-11-27
申请号：US15101146
申请日：2014-12-01
Applicant: SOLiD. Inc.
Inventor： Kee-Woon Na
Abstract: The present invention relates to an optical time domain reflectometer using, as a optical source, a polymer wavelength tunable laser which tunes the wavelength of an optical signal by using polymer grating. The optical time domain reflectometer of the present invention tunes the wavelength of a polymer wavelength tunable laser that outputs a constant optical signal and inspects cutting, reflection, and damage of an optical line by separating an optical signal returning from the optical line by an optical filter having a specific central wavelength. Since a optical source having a constant light intensity is used, the present invention has an effect of reducing the nonlinear effect generated in an optical line.
-
公开(公告)号：US20180310226A1
公开(公告)日：2018-10-25
申请号：US16021913
申请日：2018-06-28
Applicant: SOLiD, INC.
Inventor： Do Yoon KIM , Hyoung Ho KIM , Kwang Nam SEO
CPC classification number: H04W40/22 , H04B3/36 , H04B7/155 , H04L25/02 , H04L25/10 , H04L25/20 , H04W56/001 , H04W88/08
Abstract: There is provided a main unit and a distributed antenna system including the same. The main unit for constituting a distributed antenna system that receives a base station signal from at least one base station, transmits the base station signal to at least one user terminal, and includes a plurality of main units, the main unit includes: a first receiver for receiving a first group of base station signals; a second receiver for receiving a second group of base station signals from another main unit; a signal combiner for combining the first and second groups of base station signals; and a delay compensator for compensating for time delay corresponding to a path between the main unit and the other main unit with respect to the first group of base station signals before combining the first and second groups of base station signals.
-
公开(公告)号：US20180191304A1
公开(公告)日：2018-07-05
申请号：US15540682
申请日：2015-12-30
Applicant: SOLiD, INC.
Inventor： Jaehun CHOI , Kyungeun HAN
Abstract: According to an embodiment of the inventive concept, an up-down converter includes a first mixer configured to convert an input radio frequency (RF) signal into an intermediate frequency (IF) signal using a first local signal; an IF filter configured to filter the IF signal converted by the first mixer; a second mixer configured to convert the IF signal, which has been filtered by the IF filter, into an output RF signal using a second local signal; and a local oscillator configured to control a frequency of the first local signal and the second local signal based on a frequency of the input RF signal.
-
公开(公告)号：US20180189053A1
公开(公告)日：2018-07-05
申请号：US15862101
申请日：2018-01-04
Applicant: SOLiD, INC.
Inventor： Bongcheol NA
CPC classification number: G06F8/658 , G06F8/61 , G06F8/71 , H04B7/022 , H04L41/08 , H04L41/082 , H04L45/563 , H04L67/34
Abstract: The inventive concept relate to a device and method of managing data of a distributed antenna system, and more particularly, to a data management device to efficiently update firmware of devices constituting a distributed antenna system, and a method of the same. According to an embodiment of the inventive concept, a data management device of a distributed antenna system includes an unpackaging unit, when a package file which is generated by packaging firmware files of a plurality of devices constituting a distributed antenna system is input, configured to unpackage the package file; a control unit configured to determine a device requiring firmware update by comparing version information of the package file with version information of a firmware file of each of the devices included in the unpackaged package file; and a transmission unit configured to transmit a latest version of a firmware file to a device corresponding to a top node of the device requiring firmware update according to a result of the determination of the control unit.
-
Patent Agency Ranking
公开(公告)号：US20180175938A1
公开(公告)日：2018-06-21
申请号：US15848172
申请日：2017-12-20
Applicant: SOLiD, INC.
Inventor： Young Ju YOU
IPC: H04B10/2575 , H04B7/024 , H01Q1/24 , H04W88/08 , H04B7/0413
CPC classification number: H04B10/25754 , H01Q1/246 , H04B7/022 , H04B7/024 , H04B7/0413 , H04W88/085
Abstract: A head-end device according to an embodiment includes: a plurality of base station interfacing units configured to interface each of transmission/reception signals that are exchanged between the head-end device and a plurality of base stations; and a head-end control unit configured to receive an upper interfacing unit signal transmitted from an upper base station interfacing unit from among the plurality of base station interfacing units, and sequentially transmit the received upper interfacing unit signal to a lower base station interfacing unit.
-
公开(公告)号：US10003119B2
公开(公告)日：2018-06-19
申请号：US15421751
申请日：2017-02-01
Applicant: SOLiD, INC.
Inventor： Dongwon Lee
IPC: H01R31/00 , H01Q1/22 , H01R31/06 , H01R13/66 , H01R24/54 , H05K7/14 , H05K7/20 , H01R33/94 , H01R9/05 , H01R33/88 , H01R13/659 , H01R24/38 , H01R24/50 , H01R13/631
CPC classification number: H01Q1/22 , H01R9/05 , H01R9/0515 , H01R13/6315 , H01R13/659 , H01R13/6683 , H01R24/38 , H01R24/50 , H01R24/54 , H01R31/06 , H01R33/88 , H01R33/94 , H05K7/1452 , H05K7/20563
Abstract: Disclosed is a base station device including a an interface board, which is located in a housing and has a first surface and a second surface opposite to the first surface, comprising a relay connector of which one end is exposed on the first surface and an opposite end is exposed on the second surface; a base station signal matching unit mounted on the first surface and comprising a first connector coupled to the one end of the relay connector; and a base station signal processing unit mounted on the second surface and comprising a second connector coupled to the opposite end of the relay connector.
-
公开(公告)号：US20180128865A1
公开(公告)日：2018-05-10
申请号：US15865749
申请日：2018-01-09
Applicant: SOLiD, INC.
Inventor： Yeong Shin YEO , Kyung Eun HAN
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：US20180042069A1
公开(公告)日：2018-02-08
申请号：US15785921
申请日：2017-10-17
Applicant: SOLiD, INC.
Inventor： Hwansun LEE
CPC classification number: H04W88/085 , H04B1/00 , H04B1/3888 , H04B1/40
Abstract: A signal processing device according to an exemplary embodiment of the inventive concept can integrate a power amplifier, a duplexer, and a linearizer as a module to improve the convenience of management and to improve flexibility and extensibility so as to be transformable corresponding to a change in system development concept.
-
公开(公告)号：US20180027431A1
公开(公告)日：2018-01-25
申请号：US15546186
申请日：2015-04-23
Applicant: SOLiD, INC.
Inventor： Youngman CHO , Doyoon KIM , Jinhwa KU , Hyoungho KIM
IPC: H04W24/04 , H04B17/336
Abstract: The present invention provides a distributed antenna system for automatically detecting an abnormally operating node unit. According to an embodiment of the present invention, a node unit of the distributed antenna system includes a signal input unit configured to receive and output first through n-th state information from n other node units connected to the node unit, where n is a natural number greater than or equal to 2; and a controller configured to analyze the first through n-th state information and to determine states of uplink signals respectively corresponding to the first through n-th state information. Each of the n other node units may analyze a signal received through a service antenna and generate the state information.
-
-
-
-
-
-
-
-
-
Search Results
324
records
(took 0.021 seconds)
