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公开(公告)号：US09948379B2
公开(公告)日：2018-04-17
申请号：US15624770
申请日：2017-06-16
Applicant: SOLiD, INC.
Inventor： Yongki Cho
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.
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公开(公告)号：US20180076898A1
公开(公告)日：2018-03-15
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
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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公开(公告)号：US20180069627A1
公开(公告)日：2018-03-08
申请号：US15811029
申请日：2017-11-13
Applicant: SOLiD, INC.
Inventor： Chiyoung PARK
IPC: H04B10/079 , H04J14/02
CPC classification number: H04B10/07955 , H04B10/07957 , H04B10/25754 , H04J14/0215 , H04J14/0282
Abstract: There is provided an optical signal monitoring device and an optical signal monitoring system of a wavelength division multiplexing based network including: an input unit configured to receive each of downlink signals and uplink signals; a wavelength division multiplexing filter configured to separate the downlink signals and the uplink signals by wavelength; an optical power measurement module configured to measure optical power of each signal separated by wavelength; and a controller configured to determine whether an optical signal is abnormal based on optical power information measured by the optical power measurement module.
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公开(公告)号：US20180041266A1
公开(公告)日：2018-02-08
申请号：US15783102
申请日：2017-10-13
Applicant: SOLiD, INC.
Inventor： Nagwon KWON , Hyunchae KIM
IPC: H04B7/155
CPC classification number: H04B7/15585
Abstract: An interference cancellation repeater for canceling an interference signal included in an input signal including a first adaptive filter configured to generate a first estimated signal; a second adaptive filter configured to generate a second estimated signal; a first scaler configured to scale the first estimated signal based on a first scale factor determined according to a channel state; a second scaler configured to scale the second estimated signal based on a second scale factor determined according to the channel state; a first canceller configured to generate a first interference canceled signal based on the input signal and the scaled first estimated signal; and a second canceller configured to generate a second interference canceled signal based on the first interference canceled signal and the scaled second estimated signal.
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公开(公告)号：US20180034533A1
公开(公告)日：2018-02-01
申请号：US15540643
申请日：2015-12-21
Applicant: SOLiD, INC. , SOLIDSYSTEMS CO., LTD.
Inventor： Hyunbeom LEE , Hyunchae KIM
IPC: H04B7/155
CPC classification number: H04B7/15585 , H04B7/155 , H04B7/15535 , H04B7/15571
Abstract: According to an aspect of the inventive concept, there is provided an interference cancellation repeater for repeating a long term evolution (LTE) signal between a terminal and a base station, the interference cancellation repeater includes: an interference canceller configured to generate a restored LTE signal by canceling a feedback signal included in an input LTE signal; a sync signal detector configured to detect a first sync level which is a level with respect to a sync signal of the input LTE signal and a second sync level which is a level with respect to a sync signal of the restored LTE signal; and a gain controller configured to control a signal amplifier according to isolation calculated based on a difference between the first sync level and the second sync level.
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Patent Agency Ranking
公开(公告)号：US20170370766A1
公开(公告)日：2017-12-28
申请号：US15540494
申请日：2015-12-29
Applicant: SOLiD, INC.
Inventor： Hyoungho KIM , Kwangnam SEO , Doyoon KIM
CPC classification number: G01G23/10 , G01G3/1414 , G06F3/05 , H03D7/125 , H03D7/1441 , H03M1/0626 , H03M1/12 , H03M1/747 , H04B1/0483 , H04L25/03038 , H04L27/2647
Abstract: According to an aspect of the inventive concept, there is provided an apparatus for processing an output signal of an analog-digital converter, includes: a first frequency conversion unit for converting a frequency of the output signal of the analog-digital converter so that a band where spurious components exist moves to a band where direct current components exist in the output signal of the analog-digital converter; a spurious component blocking unit for eliminating, from an output signal of the first frequency conversion unit, spurious components which have moved to the band where direct current components exist; and a second frequency conversion unit for restoring a frequency of an output signal of the spurious component blocking unit to the original frequency of the output signal of the analog-digital converter.
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公开(公告)号：US09854541B2
公开(公告)日：2017-12-26
申请号：US14938086
申请日：2015-11-11
Applicant: SOLiD, INC.
Inventor： Hwan Sun Lee
CPC classification number: H04W52/34 , H04W52/0209 , H04W52/52 , H04W72/0406 , H04W72/0473 , Y02D70/00 , Y02D70/1262 , Y02D70/142 , Y02D70/146
Abstract: A communication device for power saving and a method for controlling power thereof are provided. The communication device includes a power amplifying unit and a control unit. The power amplifying unit generates an output signal obtained by amplifying a downlink signal, using a supply voltage, and outputs the output signal. The control unit determines a current state by comparing predetermined downlink reference information with output signal information on the output signal, and, if the current state is an active state as a comparison result, controls the supply voltage to correspond to the output signal information. Accordingly, power for amplifying a signal can be controlled according to communication traffic, thereby preventing consumption of unnecessary power.
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公开(公告)号：US09825690B2
公开(公告)日：2017-11-21
申请号：US15287271
申请日：2016-10-06
Applicant: SOLiD, INC.
Inventor： Yongki Cho
CPC classification number: H04B7/15507 , H04B1/40 , H04B7/022 , H04B7/04 , H04B7/15535 , H04W88/085 , H04W92/12
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.
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公开(公告)号：US09825595B2
公开(公告)日：2017-11-21
申请号：US14411479
申请日：2013-12-23
Applicant: SOLID, INC.
Inventor： Hwan Sun Lee
CPC classification number: H03F1/3247 , H03F1/26 , H03F1/30 , H03F1/3223 , H03F3/19 , H03F3/24 , H03F3/245 , H03F2200/111 , H03F2200/451
Abstract: A wideband highly linear amplifier includes a plurality of pre-distortion units for respectively linearizing digital signals of a plurality of bands, a synthesis unit for synthesizing output signals of the pre-distortion units, a single amplifier for amplifying signals outputted from the synthesis unit, distribution units for respectively separating the signals for each of the plurality of bands from the output signals of the amplifier, a plurality of inverse compensation attenuators for respectively attenuating the separated signals for each of the plurality of bands, and a feedback path for respectively feeding the attenuated signals for each of the plurality of bands back into the pre-distortion unit of the corresponding band out of the plurality of the pre-distortion units.
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公开(公告)号：US20170303209A1
公开(公告)日：2017-10-19
申请号：US15421637
申请日：2017-02-01
Applicant: SOLiD, INC.
Inventor： Bongcheol NA
CPC classification number: H04W52/26 , H04W52/143 , H04W52/346 , H04W52/42 , H04W88/08 , H04W88/085
Abstract: According to an aspect of the inventive concept, there is provided a headend apparatus, including: a spectrum analysis unit analyzing frequency spectrums of a plurality of base station signals to detect characteristic information of the plurality of base station signals; a control unit transmitting the characteristic information to a network management server connected to the headend apparatus and outputting power control information, generated based on the characteristic information, received from the network management server; and a plurality of RF units receiving at least one of the plurality of base station signals and controlling power of the plurality of base station signals based on the power control information and outputting the plurality of base station signals.
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