公开(公告)号：US20190058662A1

公开(公告)日：2019-02-21

申请号：US16077906

申请日：2016-03-28

Applicant: SOLiD, INC.

Inventor： Hoo Pyo HONG ,  Dong Hee KWON ,  Hee Hwan KWAK

IPC: H04L12/801 ,  H04L12/851 ,  H04L12/813 ,  H04W28/02 ,  H04L12/823

Abstract: According to one or more embodiments of the present invention, a frame processing method of a distributed antenna system may include confirming whether a quality of service (QoS) tag exists in header information of a received frame; performing frame scheduling of the frame based on the QoS tag; and dropping or transmitting the frame according to a transmission priority according to a result of the frame scheduling.

公开(公告)号：US10206192B2

公开(公告)日：2019-02-12

申请号：US15106354

申请日：2014-08-14

Applicant: SOLiD, INC.

Inventor： Hyunchae Kim

IPC: H04W56/00 ,  H04L5/00 ,  H04J11/00 ,  H04L27/26 ,  H04B7/155

Abstract: There is provided a device for detecting LTE frame synchronization, including: a CP correlator calculating a correlation of a cyclic prefix (CP) included in each orthogonal frequency division multiplexing (OFDM) symbol of an LTE signal processed digital conversion; a frequency offset compensation unit compensating a frequency offset for a synchronization signal in the LTE signal by using a symbol frequency offset calculated based on the CP correlation; a synchronization signal correlation calculation unit performing a correlation calculation in a time domain with respect to the synchronization signal, of which the frequency offset is compensated, by considering a symbol start timing obtained based on the CP correlation; and a frame synchronization detection unit detecting the frame synchronization of the LTE signal based on a result of the correlation calculation for the synchronization signal.

公开(公告)号：US10200107B2

公开(公告)日：2019-02-05

申请号：US15540615

申请日：2015-12-04

Applicant: SOLiD, INC.

Inventor： Hyunchae Kim

IPC: H04B7/15 ,  H04B7/155 ,  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.

公开(公告)号：US20190014484A1

公开(公告)日：2019-01-10

申请号：US16131312

申请日：2018-09-14

Applicant: SOLiD, INC.

Inventor： Hyoungho KIM ,  Doyoon KIM

IPC: H04W16/24 ,  H04W88/08 ,  H04B7/024

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.

公开(公告)号：US10165523B2

公开(公告)日：2018-12-25

申请号：US15813230

申请日：2017-11-15

Applicant: SOLiD, INC.

Inventor： Hwan Sun Lee

IPC: H04W52/02 ,  H04W52/34 ,  H04W72/04 ,  H04W52/52

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.

公开(公告)号：US10111107B2

公开(公告)日：2018-10-23

申请号：US15084843

申请日：2016-03-30

Applicant: SOLiD, INC.

Inventor： Hyoungho Kim ,  Doyoon Kim

IPC: H04W88/08 ,  H04W16/24 ,  H04B7/024

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.

公开(公告)号：US20180254539A1

公开(公告)日：2018-09-06

申请号：US15972311

申请日：2018-05-07

Applicant: SOLiD, INC.

Inventor： Dongwon LEE

IPC: H01Q1/22 ,  H05K7/20 ,  H01R24/54 ,  H01R31/06 ,  H01R13/66 ,  H05K7/14 ,  H01R13/631 ,  H01R9/05 ,  H01R13/659 ,  H01R24/38 ,  H01R33/88 ,  H01R33/94 ,  H01R24/50

Abstract: A base station interface device including an interface board, which is located in a housing and determines an upper portion of a first surface as a first mounting location and an upper portion of a second surface opposite to the first surface as a second mounting location, including a relay connector wherein one end is exposed to the upper portion of the first surface and the other end is exposed to the upper portion of the second surface; a base station signal matching unit mounted on the first mounting location and including a first connector coupled to the one end of the relay connector; and a base station signal processing unit mounted on the second mounting location and including a second connector coupled to the other end of the relay connector.

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.

公开(公告)号：US20180176867A1

公开(公告)日：2018-06-21

申请号：US15893132

申请日：2018-02-09

Applicant: SOLiD, INC.

Inventor： Yeong Shin Yeo ,  Bong Cheol Na

IPC: H04W52/22 ,  H04W52/24 ,  H04L12/26 ,  H04B17/327 ,  H04B10/2575 ,  H04B7/04 ,  H04B7/26

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：US09991943B2

公开(公告)日：2018-06-05

申请号：US15395123

申请日：2016-12-30

Applicant: SOLID, INC.

Inventor： Nagwon Kwon ,  Hyunchae Kim

IPC: H04B15/00 ,  H04B7/155 ,  H04B7/185 ,  H04W72/04 ,  H04W72/08

CPC classification number: H04B7/15585 ,  H04B7/15535 ,  H04B7/15542 ,  H04B7/18543 ,  H04W72/0473 ,  H04W72/082

Abstract: An interference cancellation repeater including a subtractor configured to subtract an estimated signal from a digital reception signal and output an interference canceled signal; a first power calculator configured to calculate power of the digital reception signal; a second power calculator configured to calculate power of the interference canceled signal; and an attenuation controller configured to compare a power value of the calculated digital reception signal with a power value of the calculated interference canceled signal and determine an attenuation value of the interference canceled signal according to the comparison result.