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公开(公告)号：US20210050909A1
公开(公告)日：2021-02-18
申请号：US16991564
申请日：2020-08-12
Inventor： Nagwon KWON , Hyunchae KIM , Chonghoon KIM , Seungmo HONG , Sungbin IM
IPC: H04B7/155
Abstract: A method of operating a repeater comprises selecting some of adaptive filter coefficients among a plurality of adaptive filter coefficients of an adaptive filter used for interference cancellation, based on the size of a coefficient, generating a predicted interference signal using the selected adaptive filter coefficients and generating an interference-canceled communication signal from a received signal using the generated predicted interference signal.
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公开(公告)号：US20180198540A1
公开(公告)日：2018-07-12
申请号：US15916910
申请日：2018-03-09
Applicant: SOLiD, INC.
Inventor： Nagwon KWON , Hyunchae KIM
IPC: H04B17/40 , H04W52/46 , H04B17/309 , H04W52/24
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.
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公开(公告)号：US20170366247A1
公开(公告)日：2017-12-21
申请号：US15540615
申请日：2015-12-04
Applicant: SOLiD, INC.
Inventor： Hyunchae KIM
CPC classification number: H04B7/15507 , H04B7/15578 , H04B7/15585 , H04W28/04
Abstract: An interference cancellation repeater includes: a first transmission/reception processing unit configured to convert a radio frequency (RF) input signal input via a link antenna communicatively coupled to a base station into a digital input signal; an interference canceller configured to cancel an interference signal from the digital input signal and to output an interference canceled signal; a second transmission/reception processing unit configured to convert the interference canceled signal into an RF output signal and to amplify the RF output signal; and a gain controller configured to detect a gain change of the interference cancellation repeater based on the interference canceled signal and to change a current gain of the interference cancellation repeater to a target gain by adjusting intensity of at least one of the RF input signal, the interference canceled signal, and the RF output signal when the gain change of the interference cancellation repeater is detected.
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公开(公告)号：US20170187448A1
公开(公告)日：2017-06-29
申请号：US15391180
申请日：2016-12-27
Applicant: SOLiD, INC.
Inventor： Nagwon KWON , Hyunchae KIM
IPC: H04B7/155
CPC classification number: H04B7/15585
Abstract: An interference cancellation repeater configured to cancel an interference signal included in an input signal, the interference cancellation repeater including: a canceller configured to generate an interference canceled signal based on the input signal and an estimated signal; a digital filter configured to filter the interference canceled signal to generate an output signal; an interference signal detector configured to generate interference signal existence interval information using the input signal and the output signal; and an adaptive filter configured to receive the interference canceled signal and the output signal, and generate the estimated signal based on the interference signal existence interval information. Information of the signal existence section
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公开(公告)号：US20170012696A1
公开(公告)日：2017-01-12
申请号：US15117926
申请日：2014-07-02
Applicant: SOLID, INC.
Inventor： Inho JANG , Hyunchae KIM
CPC classification number: H04B7/15585 , H03F1/3247 , H03F3/19 , H03F3/21 , H04B7/15578 , H04B17/318 , H04L5/0048
Abstract: Provided is an interference cancellation relay device. The interference cancellation relay device includes: an interference cancellation unit cancelling an interference signal from an input signal and outputting the input signal from which the interference signal is removed; a gain control unit controlling a gain of an output signal of the interference cancellation unit; and a pre-distortion unit distorting the output signal of the interference cancellation unit, of which the gain is controlled by the gain control unit.
Abstract translation: 提供了一种干扰消除中继装置。 干扰消除中继装置包括：干扰消除单元，从输入信号中消除干扰信号，并输出除去干扰信号的输入信号; 增益控制单元，控制所述干扰消除单元的输出信号的增益; 以及预失真单元使得干扰消除单元的输出信号失真，其中增益由增益控制单元控制。
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Patent Agency Ranking
公开(公告)号：US20210058878A1
公开(公告)日：2021-02-25
申请号：US16991586
申请日：2020-08-12
Inventor： Nagwon KWON , Hyunchae KIM , Chonghoon KIM
Abstract: Provided are a synchronization signal detection method performed by a receiver including a processor and a memory, the synchronization signal detection method comprises calculating a PSS correlation value for a primary synchronization signal (PSS) included in a received signal, detecting a frequency offset for the PSS and a timing offset for sampling timing of the received signal and detecting the PSS based on the PSS correlation value, the frequency offset, and the timing offset.
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公开(公告)号：US20200322811A1
公开(公告)日：2020-10-08
申请号：US16652912
申请日：2019-07-23
Applicant: SOLID, INC.
Inventor： Sangwook KANG , Hoony HONG , Hyunchae KIM , Kwon KIM , Woosik MOON
Abstract: A method of operating a repeater comprises detecting a synchronization signal from a received communication signal, identifying a time division duplex (TDD) switching pattern based on a power change of the communication signal over time and switching an uplink operation and a downlink operation of the repeater based on the detected synchronization signal and the TDD switching pattern.
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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：US20170257465A1
公开(公告)日：2017-09-07
申请号：US15511462
申请日：2014-09-17
Applicant: SOLiD, INC.
Inventor： Hyunchae KIM
Abstract: A base station system includes a main conversion unit configured to receive a first downlink frame conforming to a first protocol and a second downlink frame conforming to a second protocol, and configured to reconstruct the first and second downlink frames to conform to a third protocol and generate a downlink transmit frame; and a radio unit including a remote conversion unit that receives the downlink transmission frame and disassembles the received downlink transmission frame to output at least one of the first and second downlink frames.
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公开(公告)号：US20170187449A1
公开(公告)日：2017-06-29
申请号：US15391209
申请日：2016-12-27
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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