公开(公告)号：US20050135808A1

公开(公告)日：2005-06-23

申请号：US10913884

申请日：2004-08-05

申请人： Hyun Ho Yun ,  Tae Kim ,  Jeong Yoo ,  Byoung Kim

发明人： Hyun Ho Yun ,  Tae Kim ,  Jeong Yoo ,  Byoung Kim

IPC分类号： H04L12/28 ,  H04B10/20 ,  H04B10/24 ,  H04J14/02 ,  H04Q11/00

CPC分类号： H04J14/0282 ,  H04B10/40 ,  H04J14/02 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0298 ,  H04Q11/0067 ,  H04Q2011/0016 ,  H04Q2011/0064

摘要： A termination device for use in a WDM-SCM PON system can effectively support a multi-channel integration function of a WDM/SCM PON system. The termination device contained in a termination end of a WDM/SCM (Wavelength Division Multiplexing/Sub-Carrier Multiplexing) PON (Passive Optical Network) to connect the PON with either a subscriber or an Ethernet service network includes: an Ethernet interface module connected to the Ethernet service network or the subscriber to perform an Ethernet interface function; a WDM/SCM physical layer module physically connected to the WDM/SCM PON to transmit/receive optical signals to/from the WDM/SCM PON; and a MAC (Media Access Control)-bridge module for performing a multiplexing/demultiplexing operation based on a MAC address upon receipt of transmission/reception frames, and reconstructing preambles of the frames while being classified according to channels so that individual Ethernet frames are matching-processed while being classified according to SCM channels of the WDM/SCM physical layer module.

摘要翻译： 用于WDM-SCM PON系统的终端设备可以有效地支持WDM / SCM PON系统的多信道集成功能。 包含在将PON与用户或以太网业务网络连接的WDM / SCM（波分复用/子载波复用）PON（无源光网络）的终端中的终端设备包括：以太网接口模块，连接到 以太网业务网络或用户执行以太网接口功能; WDM / SCM物理层模块，物理上连接到WDM / SCM PON以向/从WDM / SCM PON发送/接收光信号; 以及MAC（媒体访问控制） - 桥接模块，用于在接收到发送/接收帧时基于MAC地址执行复用/解复用操作，并且在根据信道分类的同时重构帧的前同步码，使得各个以太网帧匹配 在根据WDM / SCM物理层模块的SCM通道进行分类的过程中。

公开(公告)号：US20050129400A1

公开(公告)日：2005-06-16

申请号：US10912340

申请日：2004-08-04

申请人： Tae Kim ,  Jeong Yoo ,  Byoung Kim

发明人： Tae Kim ,  Jeong Yoo ,  Byoung Kim

IPC分类号： H04L12/56 ,  H04J14/00 ,  H04J14/02 ,  H04Q11/00

CPC分类号： H04J14/0282 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0298 ,  H04Q11/0067 ,  H04Q2011/0016 ,  H04Q2011/0086

摘要： The present invention relates to a WDM/SCM-PON and a media access control method for asymmetric packet communication in the same. In the WDM/SCM-PON, each SCM channel is classified and used as a link by adopting an SCM technique of subdividing a wavelength band of up/downstream data links between an OLT and ONTs into frequency bands, and the ONTs are formed so that a certain SCM channel is independently distributed not fixedly assigned. Accordingly, an inventory problem, which can be generated in WDM/SCM, is prevented before happens, asymmetric dynamic band allocation is performed, and asymmetric service of up/downstream transmission is supported. As a result, a band required for next generation service is dynamically provided, optical interference effect is minimized, and Ethernet compatibility is provided so that Ethernet service suitable for providing IP service can be accommodated.

摘要翻译： 本发明涉及一种WDM / SCM-PON及其中的非对称分组通信的媒体接入控制方法。 在WDM / SCM-PON中，通过采用将OLT和ONT之间的上下行数据链路的波段划分成频带的SCM技术将每个SCM信道分类并用作链路，并且形成ONT，使得 某个SCM信道是独立分配的，没有固定分配。 因此，在发生之前可以防止在WDM / SCM中产生的库存问题，执行非对称动态频带分配，支持上下行传输的非对称业务。 结果，动态地提供了下一代业务所需的频带，减少了光干扰效应，提供了以太网兼容性，从而可以适应提供IP业务的以太网业务。

公开(公告)号：US20060133382A1

公开(公告)日：2006-06-22

申请号：US11124453

申请日：2005-05-05

申请人： Hyun Yun ,  Tae Kim ,  Jeong Yoo ,  Byoung Kim

发明人： Hyun Yun ,  Tae Kim ,  Jeong Yoo ,  Byoung Kim

IPC分类号： H04L12/56 ,  H04L12/28

CPC分类号： H04L47/34 ,  H04L47/10 ,  H04L47/125

摘要： The present invention provides an apparatus and method for preserving a frame sequence and distributing traffic in a multi-channel link, which efficiently distributes frame traffic while preserving the transmission sequence of frames in a link composed of multiple channels, and to a multi-channel transmitter using the apparatus and method. The present invention determines whether the preservation of a sequence of frames is required using information about received frames, predicts a frame transmission service finish time on the basis of the length of frames if the sequence preservation is required, determines a sequence preservation service time (SPST) on the basis of the predicted transmission service finish time, stores the frames in a sequence preservation buffer for the SPST, and distributes the frames to idle transmitters at a termination point of the SPST, thus maximizing the efficiency of channel use.

公开(公告)号：US20060127091A1

公开(公告)日：2006-06-15

申请号：US11133071

申请日：2005-05-18

申请人： Jeong Yoo ,  Tae Kim ,  Hyun Yun ,  Byoung Kim ,  Nam Kim ,  Jae Kim ,  Bok Jung ,  Min Kang

发明人： Jeong Yoo ,  Tae Kim ,  Hyun Yun ,  Byoung Kim ,  Nam Kim ,  Jae Kim ,  Bok Jung ,  Min Kang

IPC分类号： H04J14/00

CPC分类号： H04L45/00 ,  H04J14/0226 ,  H04J14/0232 ,  H04J14/0238 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04L12/185 ,  H04L45/16 ,  H04L45/62 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0069

摘要： The present provides a method of dynamically managing multicast groups and allocating multicast service wavelengths for the highest channel efficiency. According to the present invention, the share indices of wavelengths of all multicast service groups, which employ broadcasting wavelengths and data wavelengths, are periodically ascertained on the basis of IGMP snooping-based technology in a WDM-PON. Based on the ascertainment results, if the channel share index of the group that employs the broadcasting wavelength is smaller than the channel share index of the group that employs the data wavelength, the share index of the wavelength of the multicast group that employs the broadcasting wavelength is maximized by dynamically changing allocation of the wavelength of the multicast group, so that a maximum multicast service can be provided within limited resources.

公开(公告)号：US20070154217A1

公开(公告)日：2007-07-05

申请号：US11636131

申请日：2006-12-08

申请人： Tae Kim ,  Jeong Yoo ,  Kang Lee ,  Hyeon Yoon ,  Byoung Kim

发明人： Tae Kim ,  Jeong Yoo ,  Kang Lee ,  Hyeon Yoon ,  Byoung Kim

IPC分类号： H04J14/00

CPC分类号： H04J14/02 ,  H04J14/0282

摘要： Provided are extendable loop-back passive optical network (PON) and scheduling method and apparatus for the same. The loop-back type PON includes an OLT (optical line terminal) including a wavelength-tunable optical transmitter and a wavelength-locked optical receiver, and an RN (remote node) including an optical coupler/splitter, the optical coupler/splitter receiving optical signals from the wavelength-tunable optical transmitter and splitting the optical signals by wavelength so as to transmit the optical signals to corresponding ONTs (optical network terminals). Each of the ONTs transmits upstream data to the OLT using the same wavelength as the wavelength of the optical signal received from the OLT through the RN. Since the optical network makes use of the TDM and WDM communication schemes, the optical network can be maintained and upgraded at lower cost.

摘要翻译： 提供了可扩展环回无源光网络（PON）及其调度方法和装置。 环回型PON包括包括波长可调光发射机和波长锁定光接收机的OLT（光线路终端）和包括光耦合器/分离器的RN（远程节点），光耦合器/分离器接收光 来自波长可调光发射机的信号，并通过波长分割光信号，以将光信号传输到相应的ONT（光网络终端）。 每个ONT使用与从OLT通过RN接收的光信号的波长相同的波长向OLT发送上行数据。 由于光网络利用TDM和WDM通信方案，可以以更低的成本维护和升级光网络。

公开(公告)号：US20070133986A1

公开(公告)日：2007-06-14

申请号：US11636048

申请日：2006-12-08

申请人： Kang Lee ,  Hyeon Yoon ,  Tae Kim ,  Jeong Yoo ,  Byoung Kim

发明人： Kang Lee ,  Hyeon Yoon ,  Tae Kim ,  Jeong Yoo ,  Byoung Kim

IPC分类号： H04B10/20

CPC分类号： H04Q11/0067 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04Q2011/0018 ,  H04Q2011/0079 ,  H04Q2011/0086

摘要： Provided are a physical coding sublayer (PCS) apparatus and an Ethernet layer architecture for a network-based tunable-wavelength passive optical network (T-PON) system employing an Ethernet communications technology, and more particularly, to a PCS apparatus and an Ethernet layer architecture for supporting a series of initialization function of allocating wavelengths between an optical line terminal (OLT) and an optical network terminal (ONT) and arranging the allocated wavelengths. A PCS layer transmits and allocates wavelength information such that wavelengths for setting a link between an OLT and an ONT are allocated, optical wavelengths within the ONT are observed while a system operates to allow continuous control so that operating of the system can be stably maintained.

摘要翻译： 提供了一种物理编码子层（PCS）装置和采用以太网通信技术的基于网络的可调波长无源光网络（T-PON）系统的以太网层架构，更具体地说，涉及一种PCS装置和以太网层 用于支持在光线路终端（OLT）和光网络终端（ONT）之间分配波长的一系列初始化功能并布置所分配的波长的架构。 PCS层发送和分配波长信息，使得分配用于设置OLT和ONT之间的链路的波长，在系统操作以观察连续ONT内的光波长，从而可以稳定地维持系统的操作。

公开(公告)号：US20070147837A1

公开(公告)日：2007-06-28

申请号：US11634507

申请日：2006-12-06

申请人： Jeong Yoo ,  Byoung Kim ,  Bokrae Jung ,  Jaegwan Kim ,  Namuk Kim ,  Minho Kang

发明人： Jeong Yoo ,  Byoung Kim ,  Bokrae Jung ,  Jaegwan Kim ,  Namuk Kim ,  Minho Kang

IPC分类号： H04J14/00

CPC分类号： H04J14/0226 ,  H04J3/1694 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0282 ,  H04J2014/0253

摘要： Provided is a method of increasing the number of subscribers using a time division duplexing (TDD) technology in a wavelength division multiplexing (WDM)/Ethernet passive optical network (WE-PON) system, and more particularly, a method of increasing the number of subscribers admissible per wavelength using a TDD technology. In an existing WE-PON, due to an amplitude squeezing effect (ASE) in an optical network terminal (ONT) and an optical output power restriction in an optical line terminal (OLT), there is a disadvantage in that 4 or more subscribers cannot be simultaneously accommodated per wavelength. However, the present invention enables accommodation of a maximum of 16 subscribers per wavelength by applying a TDD technology to a medium access control (MAC) protocol. Point-to-multipoint services can be provided without the need of an additional header for classifying upstream and downstream window sizes in a downstream bandwidth used in an existing WDM-PON loopback technique using dynamic band allocation (DBA) applied to a conventional E-PON MAC protocol and scheduling algorithm. In addition, a DBA and threshold adjustment mechanism are provided to compensate for a downstream bandwidth decrease caused by application of the TDD technology.

摘要翻译： 提供了一种在波分多路复用（WDM）/以太网无源光网络（WE-PON）系统中增加使用时分复用（TDD）技术的用户数量的方法，更具体地说， 用户可以使用TDD技术在每个波长上接受许可。 在现有的WE-PON中，由于光网络终端（ONT）中的振幅挤压效应（ASE）和光线路终端（OLT）中的光输出功率限制，存在4个以上用户不能 每个波长同时容纳。 然而，本发明能够通过将TDD技术应用于媒体接入控制（MAC）协议来容纳每个波长最多16个用户。 可以提供点到多点服务，而不需要用于在现有的WDM-PON环回技术中使用的动态频带分配（DBA）中使用的下行带宽中的上行和下行窗口大小进行分类的附加报头，所述动态频带分配（DBA）应用于常规E-PON MAC协议和调度算法。 另外，提供DBA和阈值调整机制来补偿由TDD技术的应用引起的下行带宽减少。

公开(公告)号：US20070133990A1

公开(公告)日：2007-06-14

申请号：US11633349

申请日：2006-12-04

申请人： Byoung Kim ,  Mahn Park ,  Woo-Ram Lee ,  Tae Kim

发明人： Byoung Kim ,  Mahn Park ,  Woo-Ram Lee ,  Tae Kim

IPC分类号： H04J14/00

CPC分类号： H04J14/0226 ,  B82Y20/00 ,  G02B6/12004 ,  G02B6/4202 ,  G02B6/4204 ,  H01S5/0425 ,  H01S5/101 ,  H01S5/1014 ,  H01S5/34 ,  H01S5/5018 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0282 ,  H04J2014/0253

摘要： A Reflective Semiconductor Optical Amplifier (RSOA) for compensating for light loss in an optical link, an RSOA module for improving polarization dependency using the RSOA, and a Passive Optical Network (PON) for increasing economical efficiency and practical use of a bandwidth using the RSOA are provided. The PON includes a central office comprising a plurality of optic sources transmitting a downstream signal and a plurality of first receivers receiving an upstream signal; at least one optical network terminal (ONT) including a second receiver receiving the downstream signal and an RSOA which receives the downstream signal, remodulates the downstream signal into the upstream signal, and transmits the upstream signal in loopback mode; and a remote node interfacing the central office with the ONT. The upstream signal and the downstream signal are transmitted between the remote node and the ONT via a single optical fiber. The remote node includes an optical power splitter at its port connected to the ONT.

摘要翻译： 用于补偿光链路中的光损耗的反射半导体光放大器（RSOA），用于提高使用RSOA的极化依赖性的RSOA模块和用于提高经济效率和使用RSOA的带宽的实际使用的无源光网络（PON） 被提供。 PON包括中央局，其包括发送下行信号的多个光源和接收上行信号的多个第一接收机; 包括接收下行信号的第二接收器的至少一个光网络终端（ONT）和接收下行信号的RSOA将下行信号重新调制成上行信号，并以环回方式发送上行信号; 以及将中心局与ONT接口的远程节点。 上行信号和下行信号通过单个光纤在远程节点和ONT之间传输。 远程节点在其端口上连接有ONT的光功率分配器。

公开(公告)号：US20080013616A1

公开(公告)日：2008-01-17

申请号：US11775662

申请日：2007-07-10

申请人： Jong Kim ,  In Choi ,  Kook Kwak ,  Byoung Kim ,  Won Song ,  Jin Kim ,  Hyoung Lee

发明人： Jong Kim ,  In Choi ,  Kook Kwak ,  Byoung Kim ,  Won Song ,  Jin Kim ,  Hyoung Lee

IPC分类号： H04L27/01 ,  H03M13/15

CPC分类号： H04H20/57 ,  H04H40/27 ,  H04L25/0212 ,  H04L27/0014 ,  H04L2027/0038 ,  H04L2027/0067 ,  H04N21/235 ,  H04N21/26606 ,  H04N21/4345 ,  H04N21/435 ,  H04N21/4623

摘要： A channel equalizer includes a channel estimator, a coefficient calculator, a multiplier, and an error remover. The channel estimator estimates a channel impulse response (CIR) of input data in which a known data sequence is periodically inserted. The coefficient calculator calculates equalization coefficients using estimated CIR, and the multiplier multiplies the input data with the equalization coefficients for channel equalization. The error removes estimates a residual carrier phase error of the channel-equalized input data and removes the estimated phase error from the input data.

摘要翻译： 信道均衡器包括信道估计器，系数计算器，乘法器和误差去除器。 信道估计器估计周期性地插入已知数据序列的输入数据的信道脉冲响应（CIR）。 系数计算器使用估计CIR计算均衡系数，乘法器将输入数据与用于信道均衡的均衡系数相乘。 误差消除估计信道均衡输入数据的残留载波相位误差，并从输入数据中消除估计的相位误差。

公开(公告)号：US20080008473A1

公开(公告)日：2008-01-10

申请号：US11824297

申请日：2007-06-29

申请人： Byoung Kim ,  Jae Park ,  Hyeong Lee ,  Jae Yang

发明人： Byoung Kim ,  Jae Park ,  Hyeong Lee ,  Jae Yang

IPC分类号： H04J14/00

CPC分类号： H04J14/02 ,  G02B6/12004 ,  G02B6/12007 ,  G02B6/1228 ,  G02B6/124 ,  G02B6/29322 ,  G02B6/29395 ,  G02B6/29398 ,  G02B6/305 ,  G02B2006/12135 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

摘要： A PLC-based wavelength-tunable WDM-PON system with an optical wavelength alignment function, the WDM-PON system comprises: a PLC platform formed on a silicon substrate; a semiconductor chip comprising an active region generating light and a passive region located in front of the active region for vertically coupling the light generated in the active region; a planar lightwave circuit (PLC) waveguide; one portion of a PLC platform where the semiconductor chip is surface mounted; waveguide Bragg grating (WBG) formed at a predetermined location of the PLC waveguide; a directional coupler transferring an optical power by permitting the passive region to approach the PLC waveguide; a heater terminal, which is formed on the WBG; and a V-groove for attaching an optical fiber to another end of the PLC waveguide. Accordingly, a WDM-PON system having a function of realizing a cost-effective optical wavelength alignment can be provided.