公开(公告)号：US20060171721A1

公开(公告)日：2006-08-03

申请号：US11185108

申请日：2005-07-20

申请人： Sung-Kee Kim ,  Hoon Kim ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Sung-Kee Kim ,  Hoon Kim ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H04B10/04

CPC分类号： H04L45/00 ,  H04B10/2937

摘要： A label remover, and the method using the same, renders photoelectric conversion becomes unnecessary and improves using conditions and transmission quality. The label remover includes: (a) an oscillator for outputting a driving signal having a third frequency f3; (b) a double-sided band converter for (i) receiving an optical signal modulated based on a data signal of an intermediate frequency fm and frequency-modulated based on a label signal so as to indicate a first frequency f1 and a second frequency f2; and (ii) frequency-transiting the received optical signal so that each of the first and second frequencies is transited to at least two frequencies including the intermediate frequency fm; and (c) a band passer filter for filtering the frequency-transited optical signal to remove frequencies except the intermediate frequency fm.

摘要翻译： 标签去除器及其使用方法使光电转换变得不必要，并且改善了使用条件和传输质量。 标签去除器包括：（a）用于输出具有第三频率f 3的驱动信号的振荡器; （b）双面频带转换器，用于（i）接收基于中频fm的数据信号调制并基于标号信号进行频率调制的光信号，以指示第一频率f 1和第二频率 f 2; 和（ii）对所接收的光信号进行频率转换，使得第一和第二频率中的每一个被转换到包括中频fm的至少两个频率; 和（c）带通滤波器，用于对频率转换的光信号进行滤波以除去中间频率fm以外的频率。

公开(公告)号：US07733825B2

公开(公告)日：2010-06-08

申请号：US11514440

申请日：2006-09-01

申请人： Sang-Ho Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Gyu-Woong Lee ,  Hoon Kim ,  Sung-Kee Kim ,  Han-Lim Lee ,  Jae-Hoon Lee ,  Yong-Gyoo Kim ,  Dae-Eun Choi

发明人： Sang-Ho Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Gyu-Woong Lee ,  Hoon Kim ,  Sung-Kee Kim ,  Han-Lim Lee ,  Jae-Hoon Lee ,  Yong-Gyoo Kim ,  Dae-Eun Choi

IPC分类号： H04W4/00 ,  H04L12/56

CPC分类号： H04W88/085

摘要： A radio over fiber (ROF) link apparatus capable of a stable TDD wireless service for a time division duplexing (TDD) baseband signal includes a central access platform (CAP) for receiving various kinds of data including the TDD baseband signal from upper layers, multiplexing the data, electro-optically converting the multiplexed data, and transmitting the converted data as downstream data through an optical fiber, and opto-electrically converting upstream data received through the optical fiber, demultiplexing the converted upstream data, and transmitting the demultiplexed upstream data to the respective upper layers, and a remote access unit (RAU) for receiving the downstream data through the optical fiber, opto-electrically converting the received downstream data to the multiplexed data, demultiplexing the multiplexed data, performing a wireless access process of the demultiplexed data, and transmitting the wireless access processed data to a wireless local area network (WLAN) service terminal through an antenna.

摘要翻译： 能够对TDD时基双工（TDD）基带信号进行稳定的TDD无线业务的无线电光纤（ROF）链路装置包括用于从上层接收包括TDD基带信号的各种数据的中央接入平台（CAP） 数据，电光转换多路复用数据，并通过光纤将转换后的数据作为下行数据发送，并对通过光纤接收的上行数据进行光电转换，对转换的上行数据进行解复用，并将解复用的上行数据发送到 各自的上层以及用于通过光纤接收下游数据的远程访问单元（RAU），将接收到的下游数据光电转换为多路复用数据，解复用多路复用数据，执行解复用数据的无线接入处理 ，并将无线接入处理的数据发送到无线局域网（WLAN）服务 e端子通过天线。

公开(公告)号：US20070053311A1

公开(公告)日：2007-03-08

申请号：US11514440

申请日：2006-09-01

申请人： Sang-Ho Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Gyu-Woong Lee ,  Hoon Kim ,  Sung-Kee Kim ,  Han-Lim Lee ,  Jae-Hoon Lee ,  Yong-Gyoo Kim ,  Dae-Eun Choi

发明人： Sang-Ho Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Gyu-Woong Lee ,  Hoon Kim ,  Sung-Kee Kim ,  Han-Lim Lee ,  Jae-Hoon Lee ,  Yong-Gyoo Kim ,  Dae-Eun Choi

IPC分类号： H04J3/00

CPC分类号： H04W88/085

摘要： A radio over fiber (ROF) link apparatus capable of a stable TDD wireless service for a time division duplexing (TDD) baseband signal includes a central access platform (CAP) for receiving various kinds of data including the TDD baseband signal from upper layers, multiplexing the data, electro-optically converting the multiplexed data, and transmitting the converted data as downstream data through an optical fiber, and opto-electrically converting upstream data received through the optical fiber, demultiplexing the converted upstream data, and transmitting the demultiplexed upstream data to the respective upper layers, and a remote access unit (RAU) for receiving the downstream data through the optical fiber, opto-electrically converting the received downstream data to the multiplexed data, demultiplexing the multiplexed data, performing a wireless access process of the demultiplexed data, and transmitting the wireless access processed data to a wireless local area network (WLAN) service terminal through an antenna.

摘要翻译： 能够对TDD时基双工（TDD）基带信号进行稳定的TDD无线业务的无线电光纤（ROF）链路装置包括用于从上层接收包括TDD基带信号的各种数据的中央接入平台（CAP） 数据，电光转换多路复用数据，并通过光纤将转换后的数据作为下行数据发送，并对通过光纤接收的上行数据进行光电转换，对转换的上行数据进行解复用，并将解复用的上行数据发送到 各自的上层以及用于通过光纤接收下游数据的远程访问单元（RAU），将接收到的下游数据光电转换为多路复用数据，解复用多路复用数据，执行解复用数据的无线接入处理 ，并将无线接入处理的数据发送到无线局域网（WLAN）服务 e端子通过天线。

公开(公告)号：US20050058461A1

公开(公告)日：2005-03-17

申请号：US10843233

申请日：2004-05-10

申请人： Han-Lim Lee ,  Hoon Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Sung-Kee Kim ,  Gyu-Woong Lee

发明人： Han-Lim Lee ,  Hoon Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Sung-Kee Kim ,  Gyu-Woong Lee

IPC分类号： G02F1/035 ,  H04B10/2507 ,  H04B10/2513 ,  H04B10/2537 ,  H04B10/516 ,  H04B10/61 ,  H04B10/04

CPC分类号： H04B10/505 ,  H04B10/5055 ,  H04B10/5167

摘要： A duobinary optical transmission device that uses a duobinary optical transmission technique is disclosed. The duobinary optical transmission device may use an X-cut Mach-Zehnder interferometer type modulator. The duobinary optical transmission device includes a light source that outputs a carrier wave. A duobinary encoder encodes an input non-return-to-zero (NRZ) electrical signal. A low pass filter (LPF) converts the encoded signal into a 3-level electrical signal. An optical intensity modulator modulates the phase and light intensity of the carrier wave according to the 3-level electrical signal and outputs a 2-level optical duobinary signal. The optical intensity modulator may be an X-cut optical intensity modulator including a substrate; an optical waveguide formed on the substrate, and an electrode for applying an electric field.

摘要翻译： 公开了一种使用双二进制光传输技术的双向光传输装置。 双向光传输装置可以使用X切割马赫 - 曾德干涉仪型调制器。 二元光传输装置包括输出载波的光源。 二进制编码器对输入的不归零（NRZ）电信号进行编码。 低通滤波器（LPF）将编码信号转换为3级电信号。 光强调制器根据3电平电信号调制载波的相位和光强，并输出2电平的光双二进制信号。 光强度调制器可以是包括衬底的X切割光强度调制器; 形成在基板上的光波导和用于施加电场的电极。

公开(公告)号：US20080037567A1

公开(公告)日：2008-02-14

申请号：US11891122

申请日：2007-08-09

申请人： Jae-Hun Cho ,  Seong-Taek Hwang ,  Hoon Kim ,  Yun-Je Oh

发明人： Jae-Hun Cho ,  Seong-Taek Hwang ,  Hoon Kim ,  Yun-Je Oh

IPC分类号： H04L12/28

CPC分类号： H04L12/4625 ,  H04L47/10 ,  H04L47/13 ,  H04L47/2408 ,  H04L47/2441 ,  H04L47/28 ,  H04L47/31 ,  H04L47/50 ,  H04L47/562

摘要： A method and apparatus for ensuring QoS in a synchronous Ethernet bridge are disclosed, in which a classifier classifies an ingress packet according to a PHB mapped to a DSCP value of the packet and provides the classified packet to one of a predetermined synchronous packet queue and a predetermined asynchronous packet queue, a buffer queue with a plurality of queues mapped to priority levels buffers the classified packet, a marker marks the buffered packet as a synchronous packet or, if the buffered packet is an asynchronous packet, marks the packet in a predetermined format corresponding to a priority level of the packet, and a synchronous Ethernet scheduler schedules the marked packet.

摘要翻译： 公开了一种用于确保同步以太网中的QoS的方法和装置，其中分类器根据映射到分组的DSCP值的PHB对入口分组进行分类，并将分类分组提供给预定的同步分组队列和 预定的异步分组队列，具有映射到优先级的多个队列的缓冲器队列缓冲分类分组，标记将缓冲分组标记为同步分组，或者如果缓冲分组是异步分组，则以预定格式标记分组 对应于分组的优先级，并且同步以太网调度器调度所标记的分组。

公开(公告)号：US20050047785A1

公开(公告)日：2005-03-03

申请号：US10818194

申请日：2004-04-05

申请人： Seong-Taek Hwang ,  Dae-Kwang Jung ,  Hoon Kim ,  Yun-Je Oh ,  Chang-Sup Shim

发明人： Seong-Taek Hwang ,  Dae-Kwang Jung ,  Hoon Kim ,  Yun-Je Oh ,  Chang-Sup Shim

IPC分类号： G02B6/42 ,  H04B10/00 ,  H04B10/272 ,  H04J14/00 ,  H04J14/02 ,  H04L12/28 ,  H04L12/44

CPC分类号： H04J14/0282 ,  G02B6/4246 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J2014/0253

摘要： A bi-directional WDM-PON and a method for allocating a wavelength band are disclosed. In the bi-directional WDM-PON, bi-directional transceiver modules are used to transmit optical signals of different wavelengths in the upstream and downstream directions. An L-band and an S-band are used to allocate wavelength bands to the upstream and downstream optical signals so that a wavelength band interval at which the respective wavelength bands of the upstream and downstream optical signals are spaced is set between 50 nm to 150 nm.

摘要翻译： 公开了双向WDM-PON和分配波长带的方法。 在双向WDM-PON中，双向收发模块用于在上行和下行方向传输不同波长的光信号。 使用L波段和S波段将波长带分配给上游和下游光信号，使得上游和下游光信号的相应波长带间隔开的波长带间隔设置在50nm至150nm nm。

公开(公告)号：US20080107202A1

公开(公告)日：2008-05-08

申请号：US11906370

申请日：2007-10-02

申请人： Han-Lim Lee ,  Shuangfeng Han ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Hoon Kim

发明人： Han-Lim Lee ,  Shuangfeng Han ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Hoon Kim

IPC分类号： H04B7/02

CPC分类号： H04L27/18 ,  H04B7/0413 ,  H04B10/2575 ,  H04J13/00

摘要： A multiple-input multiple-output (MIMO) communication system includes a base station and a relay station that are connected through an optical fiber. The relay station wirelessly transmits through a plurality of antennas a signal received from the base station. The base station includes a plurality of symbol mappers for mapping input bit streams into a plurality of symbol signals; a MIMO multiplexer generating a plurality of exchange signals by exchanging bits of the symbol signals; and a plurality of code spreaders generating a plurality of spread signals by band spreading the exchange signals. The adoption of a wire transmission scheme for connecting the base station with the relay station through a single optical fiber provides benefits in cost reduction and complexity as the number of electrical-to-optical converters is reduced, and the bandwidth is superior to those in wireless transmission scheme

摘要翻译： 多输入多输出（MIMO）通信系统包括通过光纤连接的基站和中继站。 中继站通过多个天线无线地发送从基站接收的信号。 基站包括用于将输入比特流映射成多个符号信号的多个符号映射器; MIMO多路复用器，通过交换所述符号信号的位来产生多个交换信号; 以及多个代码扩展器，通过对交换信号进行频谱扩展来产生多个扩展信号。 采用通过单个光纤将基站与中继站连接的有线传输方案随着电 - 光转换器的数量的减少和复杂度的降低和复杂性的提高，带宽优于无线 传输方案

公开(公告)号：US20080002625A1

公开(公告)日：2008-01-03

申请号：US11644575

申请日：2006-12-22

申请人： Jae-Hun Cho ,  Seong-Taek Hwang ,  Jong-Ho Yoon ,  Yun-Je Oh ,  Hoon Kim ,  Han-Kyun Jung

发明人： Jae-Hun Cho ,  Seong-Taek Hwang ,  Jong-Ho Yoon ,  Yun-Je Oh ,  Hoon Kim ,  Han-Kyun Jung

IPC分类号： H04Q7/00

CPC分类号： H04W8/26 ,  H04W4/00 ,  H04W8/005 ,  H04W40/246 ,  H04W40/36 ,  H04W80/04 ,  H04W88/08

摘要： Disclosed is a bridged portable internet system, which includes: a plurality of edge bridges entirely connected as a mesh structure to form a core network, and configured as a layer 2 switch; a plurality of Radio Access Stations (RASs) connected to one of the plurality of edge bridges to provide portable internet services to Mobile Nodes (MNs) within the range of services; and a Neighbor Discovery Server (NDS) for supporting neighbor discovery of components in the network and storing and managing configuration information of the components, wherein each of the plurality of edge bridges maintains an optimal path through a predetermined routing protocol, identifies the destination of a Media Access Control (MAC) frame transmitted by an MN connected to an edge bridge itself through a corresponding RAS by referring to the configuration information from the NDS so as to transmit a corresponding MAC frame to the MAC address of an edge bridge to which a corresponding CN is connected by performing MAC in MAC encapsulation if receiving a MAC in MAC encapsulated frame with its own MAC address as a destination, and performs MAC in MAC encapsulation with the frame to delete an outer MAC address and to transmit an original MAC frame to a corresponding MN.

摘要翻译： 公开了一种桥接便携式互联网系统，其包括：多个边缘网桥，其完全连接为网状结构以形成核心网络，并且被配置为层2交换机; 连接到所述多个边缘网桥之一的多个无线电接入站（RAS），以向所述服务范围内的移动节点（MN）提供便携式因特网服务; 和邻居发现服务器（NDS），用于支持网络中组件的邻居发现，并存储和管理组件的配置信息，其中多个边缘网桥中的每一个维护通过预定路由协议的最佳路径，识别一个 通过参考来自NDS的配置信息，通过相应的RAS连接到边缘网桥本身的MN发送的媒体访问控制（MAC）帧，以便将相应的MAC帧发送到对应的边缘网桥的MAC地址， 如果以MAC自身的MAC地址为目的地的MAC封装帧中接收到MAC，则MAC通过MAC封装进行MAC连接，并且利用该MAC进行MAC封装，以删除外部MAC地址并将原始MAC帧发送到 相应的MN。

公开(公告)号：US20060029395A1

公开(公告)日：2006-02-09

申请号：US11147705

申请日：2005-06-08

申请人： Hoon Kim ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Hoon Kim ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H04B10/04

CPC分类号： H04B10/505 ,  H04B10/5051 ,  H04B10/5563

摘要： An optical transmission apparatus employing an FSK scheme is disclosed. The optical transmission apparatus includes a light generator arranged to generate a first tone signal having a first frequency and a second tone signal having a second frequency. The optical transmission apparatus also includes a light modulator including a second modulator for selectively outputting one of the first tone signal and the second tone signal input from the light generator according to input data.

摘要翻译： 公开了一种采用FSK方案的光传输装置。 光传输装置包括发生器，其被配置为产生具有第一频率的第一音调信号和具有第二频率的第二音调信号。 光传输装置还包括光调制器，其包括第二调制器，用于根据输入数据选择性地输出从光发生器输入的第一音调信号和第二音调信号中的一个。

公开(公告)号：US20060018667A1

公开(公告)日：2006-01-26

申请号：US11005428

申请日：2004-12-06

申请人： Han-Lim Lee ,  Hoon Kim ,  Jae-Hoon Lee ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Han-Lim Lee ,  Hoon Kim ,  Jae-Hoon Lee ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H04B10/04 ,  H04B10/12

CPC分类号： H04B10/505 ,  H04B10/5055 ,  H04B10/5167

摘要： An optical transmission apparatus using duobinary modulation adapted to an optical communication system using dense wavelength division multiplexing (DWDM) is disclosed. The duo-binary optical transmission apparatus includes an electro-absorption modulated laser (EML) for performing a light intensity modulation operation based on an electrical data signal and producing a modulated optical signal, the EML having a light source for outputting carriers and a modulator for performing the light intensity modulation operation, a precoder for inputting an inverted signal of the electrical data signal and encoding it to an encoded signal, and a modulator for performing a phase modulation of the optical signal modulated by the EML and outputting a duo-binary optical signal, according to the encoded signal.

摘要翻译： 公开了一种使用二进制调制的光传输装置，其适用于使用密集波分复用（DWDM）的光通信系统。 双二进制光传输装置包括：电吸收调制激光器（EML），用于基于电数据信号执行光强度调制操作并产生调制光信号，所述EML具有用于输出载波的光源和用于 执行光强调制操作，用于输入电数据信号的反相信号并将其编码为编码信号的预编码器，以及用于对由EML调制的光信号进行相位调制的调制器，并输出二进制二进制光 信号，根据编码信号。