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公开(公告)号：US20180116012A1
公开(公告)日：2018-04-26
申请号：US15848331
申请日：2017-12-20
Applicant: SOLiD, INC.
Inventor： Hyoungho KIM , Doyoon KIM
CPC classification number: H04W88/085 , H04B7/022
Abstract: A distributed antenna system (DAS) according to an aspect of the inventive concept includes a first node unit for receiving first digital data in accordance with a digital interface standard from a base station, converting the first digital data into second digital data in accordance with a DAS frame standard, and a second node unit for receiving the second digital data from the first node unit, and restoring the first digital data based on the second digital data.
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公开(公告)号：US20180077657A1
公开(公告)日：2018-03-15
申请号：US15813230
申请日：2017-11-15
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：US09900847B2
公开(公告)日：2018-02-20
申请号：US14411487
申请日：2014-10-15
Applicant: SOLID, INC.
Inventor： Yeong Shin Yeo , Bong Cheol Na
IPC: H04B1/00 , H04B17/00 , H04B7/00 , H04W52/22 , H04L12/26 , H04B17/327 , H04W52/24 , 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.
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公开(公告)号：US09897638B2
公开(公告)日：2018-02-20
申请号：US14583558
申请日：2014-12-26
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.
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公开(公告)号：US20180048269A1
公开(公告)日：2018-02-15
申请号：US15788122
申请日：2017-10-19
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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Patent Agency Ranking
306.发明申请公开(公告)号：US20180034649A1
公开(公告)日：2018-02-01
申请号：US15540638
申请日：2015-12-30
Applicant: SOLiD, INC.
Inventor： Doyoon KIM
IPC: H04L12/18 , H04L12/861
CPC classification number: H04L12/18 , H04L12/189 , H04L45/66 , H04L47/32 , H04L47/6245 , H04L49/90
Abstract: Provided are a node unit including a queuing engine for multicasting Ethernet data, and a distributed antenna system including the same. The node unit is a node unit which is branch-connected to a plurality of lower nodes, and comprises: a media access control (MAC) module; and a queuing engine for interfacing Ethernet data between the MAC module and the plurality of branch-connected lower nodes, wherein the queuing engine multicasts Ethernet data received from the MAC module to the plurality of branch-connected lower nodes, transfers Ethernet data received from the plurality of branch-connected lower nodes to the MAC module, wherein the queuing engine comprises a buffer for buffering Ethernet data received from the plurality of branch-connected lower nodes, and outputting the buffered Ethernet data to the MAC module.
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公开(公告)号：US20180026731A1
公开(公告)日：2018-01-25
申请号：US15540639
申请日：2015-12-04
Applicant: SOLiD, INC. , SOLIDSYSTEMS CO., LTD.
Inventor： Hyunchae KIM
IPC: H04B17/318 , H04B7/155
CPC classification number: H04B17/318 , H04B7/15578
Abstract: An interference cancellation repeater according to the inventive concept includes: a first transmission/reception processing unit configured to adjust a gain of a radio frequency (RF) input signal input via a link antenna communicatively coupled to a base station; an interference canceller configured to cancel and output an interference signal from an output signal of the first transmission/reception processing unit; and a gain controller configured to extract a signal with constant magnitude regardless of a change in user traffic from the output signal of the interference canceller, and to adjust the gain of the RF input signal to a predetermined level by controlling the first transmission/reception processing unit based on the extracted signal.
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公开(公告)号：US09877356B2
公开(公告)日：2018-01-23
申请号：US15084716
申请日：2016-03-30
Applicant: SOLiD, INC.
Inventor： Hyoungho Kim , Doyoon Kim
CPC classification number: H04W88/085 , H04B7/022
Abstract: A distributed antenna system (DAS) according to an aspect of the inventive concept includes a first node unit for receiving first digital data in accordance with a digital interface standard from a base station, converting the first digital data into second digital data in accordance with a DAS frame standard, and a second node unit for receiving the second digital data from the first node unit, and restoring the first digital data based on the second digital data.
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公开(公告)号：US09853723B2
公开(公告)日：2017-12-26
申请号：US14786462
申请日：2013-09-24
Applicant: SOLID, INC.
Inventor： Tae Hyeong Kim , Jong Yeong Lim , Jongsin Kim , Eunho Lee
IPC: G02F1/00 , H04B10/038 , H04B10/032
CPC classification number: H04B10/038 , H04B10/032
Abstract: Disclosed is an optical network system including a upper network equipment, a lower network equipment, and a plurality of transfer network equipments connecting the upper network equipment and the lower network equipment through independent optical links, wherein the lower network equipment performs switching such that transmission and reception of an optical signal are performed through an optical link of a standby line when a failure occurs in at least one of an optical link used as a working line, an optical interface device associated with the working line in the upper network equipment, and a transfer network equipment associated with the working line.
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310.发明申请公开(公告)号：US20170367061A1
公开(公告)日：2017-12-21
申请号：US15540651
申请日：2014-12-31
Applicant: SOLiD, INC.
Inventor： Doyoon KIM , Hyoungho KIM
CPC classification number: H04W56/005 , H04B17/10 , H04B17/104 , H04B17/14 , H04L7/0041 , H04W56/007 , H04W88/085
Abstract: Provided is a node unit which is branch-connected to another communication node via a transport medium, the node unit comprising: a delay measurement unit which transmits a test signal for measuring a delay to an adjacent node unit of the branch-connected upper stage via the transport medium and detects a loopback signal to which the test signal is looped back via the adjacent node unit of the upper stage, thereby measuring an upper stage transmission delay between the adjacent node unit of the upper stage and the node unit; a delay summation unit which, when an adjacent node unit of the branch-connected lower stage exists, receives a lower stage transmission delay transmitted from the adjacent node unit of the lower stage, and calculates a summed transmission delay by summing the upper stage transmission delay and the lower stage transmission delay; and a control unit which transmits the summed transmission delay to the adjacent node unit of the upper stage.
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