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公开(公告)号：US09451342B2
公开(公告)日：2016-09-20
申请号：US14687005
申请日：2015-04-15
Inventor： Kyeong Eun Han , Sun Me Kim , Tae Hyun Kwon , Jong Hyun Lee , Eun Young Cho
IPC: H04B10/00 , H04Q11/00 , H04L12/24 , H04L12/803
CPC classification number: H04Q11/0066 , H04L41/12 , H04L47/125 , H04Q2011/0077 , H04Q2011/0081 , H04Q2011/0086 , H04Q2011/009
Abstract: Provided herein is a link management method and apparatus in a multi-layered network, the method including confirming whether or not set virtual TE link resources can be committed to a virtual TE (traffic engineering) link; in response to the set virtual TE link resources being committable to the virtual TE link, committing the resources to the virtual TE link through resource commitment; in response to the set virtual TE link resources being not committable to the virtual TE link, determining whether or not the virtual TE link is an adaptive virtual TE link; and in response to the virtual TE link being determined as the adaptive virtual TE link and the adaptive bandwidth satisfying TE link setting standards, committing the resources to the virtual TE link.
Abstract translation: 这里提供了多层网络中的链路管理方法和装置，该方法包括：确定是否可以将虚拟TE链路资源设置为虚拟TE（流量工程）链路; 响应于设置的虚拟TE链路资源被提交给虚拟TE链路，通过资源承诺将资源提交给虚拟TE链路; 响应于所设置的虚拟TE链路资源不提交给所述虚拟TE链路，确定所述虚拟TE链路是否为自适应虚拟TE链路; 并且响应于虚拟TE链路被确定为自适应虚拟TE链路和满足TE链路设置标准的自适应带宽，将资源提交给虚拟TE链路。
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12.发明授权公开(公告)号：US10673524B2
公开(公告)日：2020-06-02
申请号：US16190905
申请日：2018-11-14
Inventor： Seung-Hyun Cho , Joonyoung Kim , Minkyu Sung , Jong Hyun Lee
IPC: H04B10/00 , H04B10/08 , H04B17/00 , H04B10/06 , H04B10/079 , H04B10/29 , H04W24/08 , H04J14/02 , H04B10/2575 , H04W88/08
Abstract: An optical repeater performs an electrical-to-optical conversion based on a power level of an optical signal or an optical modulation index (OMI) required by a radio unit or a host unit connected to the optical repeater. Further, the optical repeater performs an optical-to-electrical conversion based on a power level of a radio frequency (RF) signal required by the radio unit or the host unit connected to the optical repeater.
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公开(公告)号：US09998222B2
公开(公告)日：2018-06-12
申请号：US15245315
申请日：2016-08-24
Inventor： Chan Gyo Han , Min Kyu Sung , Jong Hyun Lee , Hwan Seok Chung , Seung Hyun Cho
IPC: H04B10/2513 , H04J1/02 , H04J14/02
CPC classification number: H04B10/2513 , H04B10/25753 , H04B10/548 , H04J1/02 , H04J14/0227
Abstract: An optical signal transmission system and method of allocating center frequencies of intermediate frequency (IF) carriers in a frequency division multiplexing (FDM) optical fiber link. The optical signal transmission method includes determining a center frequency interval between modulated signals based on a bandwidth of the modulated signals or a center frequency of a modulated signal having a lowest center frequency, among the modulated signals, reallocating center frequencies to the modulated signals based on the center frequency interval between the modulated signals, and converting the modulated signals reallocated the center frequencies from electrical signal into optical signal and transmitting the optical signal.
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公开(公告)号：US09246628B2
公开(公告)日：2016-01-26
申请号：US13728089
申请日：2012-12-27
Inventor： Seung-Hyun Cho , Jie Hyun Lee , Seung Il Myong , Sang Soo Lee , Jong Hyun Lee , Eui Suk Jung , Kwang Ok Kim
IPC: H04J14/02
CPC classification number: H04J14/0278 , H04J14/02 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0252 , H04J14/0282 , H04J14/0298 , H04J2014/0253
Abstract: Provided is a hybrid passive optical network (PON) system. The hybrid PON system of wavelength division multiplexing (WDM)/time division multiplexing (TDM) may include an optical line terminal (OLT) and an optical network unit (ONU). The OLT and the ONU may transmit a signal based on wavelength reuse using a seed light source and a reflective modulator. The light source may include a seed light source having a single wavelength, two seed light sources having different wavelength bands, and a light source having a wavelength tunable characteristic.
Abstract translation: 提供了一种混合无源光网络（PON）系统。 波分复用（WDM）/时分复用（TDM）的混合PON系统可以包括光线路终端（OLT）和光网络单元（ONU）。 OLT和ONU可以使用种子光源和反射调制器来发射基于波长重用的信号。 光源可以包括具有单个波长的种子光源，具有不同波长带的两个种子光源和具有波长可调特性的光源。
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公开(公告)号：US09219567B2
公开(公告)日：2015-12-22
申请号：US13729638
申请日：2012-12-28
Inventor： Kwang Ok Kim , Seung-Hyun Cho , Jie Hyun Lee , Seung Il Myong , Sang Soo Lee , Jong Hyun Lee
CPC classification number: H04J14/08 , H04Q11/0005 , H04Q2011/0064
Abstract: A converged passive optical network (CPON) and a data transmission method are disclosed. The CPON is a combination of a time division multiple access-passive optical network (TDMA-PON) and an orthogonal frequency division multiple access-passive optical network (OFDMA-PON) and is able to dynamically controlling a bandwidth for upstream signal transmission through allocation of multiple subcarriers to each single optical network unit (ONU).
Abstract translation: 公开了一种融合无源光网络（CPON）和数据传输方法。 CPON是时分多址无源光网络（TDMA-PON）和正交频分多址无源光网络（OFDMA-PON）的组合，能够通过分配动态地控制上行信号传输的带宽 的多个子载波到每个单个光网络单元（ONU）。
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Patent Agency Ranking
公开(公告)号：US09130675B2
公开(公告)日：2015-09-08
申请号：US13729521
申请日：2012-12-28
Inventor： Seung Hyun Cho , Jie Hyun Lee , Kwang Ok Kim , Eui Suk Jung , Seung Il Myong , Sang Soo Lee , Jong Hyun Lee
IPC: H04B10/272 , H04B10/564 , H04B10/27 , H04B17/00
CPC classification number: H04B10/27 , H04B10/272 , H04B10/564 , H04B17/103 , H04B17/15
Abstract: A modulation method of an optical modem and a signal transmission apparatus performing the method are disclosed. The modulation method of the optical modem includes an optical interface providing a signal to a light source, a photo detector receiving reflected light by an optical link when output light from the light source based on the provided signal is reflected by the optical link, the photo detector measuring and determining characteristics of the optical link using the reflected light, and the optical modem determining a power level and a modulation method for each subcarrier based on the characteristics of the optical link.
Abstract translation: 公开了一种光调制解调器的调制方法和执行该方法的信号传输装置。 光调制解调器的调制方法包括向光源提供信号的光接口，当基于提供的信号的来自光源的输出光被光链路反射时，光接收器接收由光链路反射的光的光检测器，照片 检测器使用反射光测量和确定光链路的特性，并且光调制解调器基于光链路的特性确定每个子载波的功率电平和调制方法。
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公开(公告)号：US10200125B2
公开(公告)日：2019-02-05
申请号：US15337119
申请日：2016-10-28
Inventor： Seung Hyun Cho , Jong Hyun Lee , Hwan Seok Chung , Sun Me Kim
IPC: H04B10/2575 , H04B10/27 , H04B7/0413
Abstract: A radio-over-fiber (RoF) transmission system includes at least one baseband unit (BBU) connected to a core network of a service provider that provides a mobile Internet service, an optical line terminal (OLT) configured to convert a radio signal received from the at least one BBU into an optical signal, an optical distribution network (ODN) comprising an optical fiber and an optical splitter, at least one optical network unit (ONU) configured to receive the optical signal from the OLT via the ODN and convert the optical signal into a radio signal, and at least one remote radio head (RRH) configured to receive the radio signal from the at least one ONU and output the radio signal via a plurality of antennas.
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公开(公告)号：US10110309B2
公开(公告)日：2018-10-23
申请号：US15823823
申请日：2017-11-28
Inventor： Seung-Hyun Cho , Hwan Seok Chung , Minkyu Sung , Jong Hyun Lee
IPC: H03M1/66 , H04B10/2575 , H04J14/02 , H04B1/38
Abstract: A host unit is provided between a remote radio head and a radio unit. The host unit performs a conversion between a digital optical signal used by the remote radio head and an analog optical signal used by the radio unit. A frequency of the analog optical signal converted by the host unit may be an intermediate frequency. The radio unit performs a conversion between an analog optical signal used by the host unit and an analog radio signal used by a user terminal. A frequency of the analog radio signal may be included in a millimeter wave band or radio frequency band.
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19.发明授权公开(公告)号：US10020890B2
公开(公告)日：2018-07-10
申请号：US15640687
申请日：2017-07-03
Inventor： Seung-Hyun Cho , Hwan Seok Chung , Minkyu Sung , Jong Hyun Lee
CPC classification number: H04B10/40 , H04B7/04 , H04B10/25759 , H04L5/14 , H04L5/1469 , H04L7/0075
Abstract: A remote radio head disposed between a baseband unit and a host unit. The remote radio head may transmit and receive a digital optical signal to the baseband unit, transmit and receive an analog optical signal to the host unit, and convert the digital optical signal and the analog optical signal, a frequency of the analog optical signal transmitted and received by the remote radio head and the host unit may be an intermediate frequency of a baseband, the host unit may be disposed between the remote radio head and a radio unit, the host unit and the radio unit may transmit and receive the analog optical signal, and the frequency of the analog optical signal transmitted and received by the host unit and the radio unit may be the intermediate frequency with a baseband signal.
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公开(公告)号：US09614749B2
公开(公告)日：2017-04-04
申请号：US14613565
申请日：2015-02-04
Inventor： Bup Joong Kim , Tae Kyu Kang , Bheom Soon Joo , Jong Hyun Lee
IPC: H04L12/759 , H04L12/741 , H04L12/707 , H04L12/703
CPC classification number: H04L45/028 , H04L45/22 , H04L45/28 , H04L45/745
Abstract: Provided is a data processing system, including: a plurality of line matching blocks each including a data processor configured to store predefined preliminary transmission tables corresponding to the respective events requiring change of a data path, to determine whether to change a transmission table based on information received through an internal communication device, and to select and activate a preliminary transmission table corresponding to an event from among the preliminary transmission tables, wherein the preliminary transmission tables include destination information on all the physical or logical paths; and a shared bus configured to enable information on an event requiring change of the data path to be transmitted and received between the plurality of line matching blocks.
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