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公开(公告)号：US20210050908A1
公开(公告)日：2021-02-18
申请号：US16991512
申请日：2020-08-12
Inventor： Nagwon KWON , HyunChae KIM , Chonghoon KIM
Abstract: A method of operating a TDD-based interference cancellation repeater, the method comprises setting a compensation gain of a gain compensator differently in an uplink communication period and a downlink communication period, setting an optimal coefficient of an adaptive filter in the uplink communication period and an optimal coefficient of the adaptive filter in the downlink communication period the same, based on the set compensation gain of the gain compensator and removing an interference signal in the uplink communication period or the downlink communication period according to the set optimal coefficient of the adaptive filter.
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公开(公告)号：US10716011B2
公开(公告)日：2020-07-14
申请号：US16131312
申请日：2018-09-14
Applicant: SOLiD, INC.
Inventor： Hyoungho Kim , Doyoon Kim
Abstract: There is provided a distributed antenna system includes a plurality of head-end units configured to receive mobile communication signals from at least one base station, a hub unit connected to each of the plurality of head-end units through a first transport medium, the hub unit distributing the mobile communication signals respectively received from the plurality of head-end units to a plurality of remote units connected thereto through a second transport medium, and the plurality of remote units remotely disposed to transmit the mobile communication signals to a terminal in a service coverage, wherein the hub unit includes a signal summer configured to digitally sum sub-band signals in a same mobile communication service band based on the mobile communication signals.
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213.发明授权公开(公告)号：US10693527B2
公开(公告)日：2020-06-23
申请号：US16455036
申请日：2019-06-27
Applicant: SOLiD, INC.
Inventor： Hyoungho Kim , Doyoon Kim , Kwangnam Seo
Abstract: A distributed antenna system includes a plurality of head-end devices for each receiving mobile communication signals from at least one corresponding base station, a hub communicatively coupled to the plurality of head-end devices, and a plurality of remote devices communicatively coupled to the hub, wherein the hub configured to distribute the mobile communication signals received from each of the plurality of head-end devices to the plurality of remote devices, wherein each of the plurality of remote devices is remotely disposed to transmit the distributed mobile communication signals to a terminal in service coverage, and wherein the hub includes a mixing processing stage configured to perform digital mixing processing on the mobile communication signals respectively received from the plurality of head-end devices, and a crest factor reduction (CFR) module disposed posterior to the mixing processing stage, with respect to a signal transmission direction.
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公开(公告)号：US20200169975A1
公开(公告)日：2020-05-28
申请号：US16638239
申请日：2019-05-24
Applicant: SOLiD, INC.
Inventor： Donghee KWON , Hoopyo HONG
Abstract: A communication system comprises a clock generator configured to generate a plurality of system clock signals used to synchronize components included in each of communication nodes in the communication system based on an external clock signal provided by an external clock source located outside the communication system and a physical layer configured to transmit any one of the generated system clock signals to a small cell communicatively connected to an end communication node of the communication system.
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公开(公告)号：US10404352B2
公开(公告)日：2019-09-03
申请号：US15540774
申请日：2015-12-21
Applicant: SOLID, INC. , SOLIDSYSTEMS CO., LTD.
Inventor： Hyunchae Kim
IPC: H04B7/15 , H04B7/155 , H04B17/318 , H04W52/34 , H04W52/24
Abstract: According to an aspect of the inventive concept, there is provided an interference cancellation repeater includes: a signal transceiver configured to cancel an interference signal from an RF input signal and to output an RF output signal from which the interference signal has been canceled; and a controller configured to control a power mode of the signal transceiver by measuring traffic of a first signal in the signal transceiver.
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Patent Agency Ranking
公开(公告)号：US10396918B2
公开(公告)日：2019-08-27
申请号：US15401203
申请日：2017-01-09
Applicant: SOLID, INC.
Inventor： Hyoungho Kim , Doyoon Kim , Yeongshin Yeo
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.
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公开(公告)号：US10389438B2
公开(公告)日：2019-08-20
申请号：US15570596
申请日：2016-03-28
Applicant: SOLiD, INC.
Inventor： Jaeyoung Heo , Kyungmin Kim , Gilkook Kim , Bumsoo Park , Chinhyoung An
IPC: H04B10/079 , H04B10/118 , H04B10/2575 , H04B7/185 , H04W56/00
Abstract: A satellite signal relay system according to an embodiment of the inventive concept includes: a plurality of remote units configured to receive an analog satellite signal, to convert the analog satellite signal into a digital satellite signal, to generate a characteristic signal for the analog satellite signal, to generate a transmission frame based on the digital satellite signal and the characteristic signal, and to convert the transmission frame into an optical transmission frame; and a central unit configured to convert optical transmission frames received from the plurality of remote units into transmission frames through an optical transmission medium, respectively, to extract a digital satellite signal and a characteristic signal from each of the converted transmission frames, and to convert any one of the extracted digital satellite signals into an analog satellite signal based on the extracted characteristics signals.
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218.发明申请公开(公告)号：US20190253147A1
公开(公告)日：2019-08-15
申请号：US16397603
申请日：2019-04-29
Applicant: SOLiD, INC.
Inventor： Youngwoo KWON
CPC classification number: H04B10/29 , H04B10/80 , H04W24/02 , H04W88/085
Abstract: Provided are an optical relay system and a method for setting identification information of a remote device in an optical relay system. In particular, provided are an optical relay system and a method for setting identification information of a remote device in an optical relay system in which a donor device generates unique identification information of a remote device based on temporary identification information and characteristic information received from the remote device to automatically set identification information of the remote device, and as a result, the optical relay system can be normally implemented rapidly in initial installation of the optical relay system or a change of an optical relay system environment and convenience of a manager and reliability of a mobile communication service can be improved.
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公开(公告)号：US10211908B2
公开(公告)日：2019-02-19
申请号：US15116945
申请日：2014-04-09
Applicant: SOLiD, INC.
Inventor： Hyunchae Kim
IPC: H04B7/155
Abstract: Provided is a multi-antenna relay device. The multi-antenna relay device having first to n-th (n is a natural number of 2 or more) channel formed between receiving antennas and transmitting antennas corresponding to each other, comprising: first to n-th channel interference cancellation units, respectively, included in a corresponding channel among the first to n-th channels and canceling first to n-th channel interference signals corresponding to signals radiated through the first to n-th channels from signal input into the corresponding channel in real time.
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公开(公告)号：US10193599B2
公开(公告)日：2019-01-29
申请号：US15401241
申请日：2017-01-09
Applicant: SOLID, INC.
Inventor： Kwangnam Seo , Hyoungho Kim , Doyoon Kim
Abstract: The inventive concept relates to a distributed antenna system (DAS), and more particularly, to an uplink signal transmission operation of each of node units constituting a DAS. A node unit of a DAS includes a multiplexer configured to generate a single uplink signal by selectively outputting any one of m uplink signals received from m lower node units at an interval of a predetermined output time, where m is a positive integer greater than 1, and a down-sampler configured to output a transmission uplink signal by converting a sampling rate of the single uplink signal to correspond to a sampling rate of any one of the m uplink signals. Accordingly, it is possible to provide a DAS capable of processing and outputting, as one signal, uplink signals received from a plurality of remote units, without any error.
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