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公开(公告)号：KR101078056B1
公开(公告)日：2011-10-31
申请号：KR1020090023560
申请日：2009-03-19
Applicant: 한국전자통신연구원
IPC: H04B10/2581 , H04B10/00
Abstract: 클록데이터복원회로(clock data recovery, CDR) 없이상향의버스트모드신호를처리하기위한광 회선단말의버스트모드역다중화기가개시된다. 버스트모드역다중화기는광 네트워크단말혹은광 네트워크유닛으로부터상향링크를통해송신된버스트모드의직렬데이터를기준클록으로오버샘플링하는역다중화부; 및역다중화부에의해오버샘플링된역다중화버스데이터들의프리엠블패턴을측정하여가장정확한하나의버스데이터를선택출력하는신호선택부;를포함한다. 이버스트모드역다중화기를이용하면기존의클록을추출하는시간의지연을가지는연속모드 CDR에비하여성능이우수할뿐 아니라, 기존의상용버스트모드 CDR에비하여고가의아날로그소자의사용을피할수 있으므로저가로칩을구성할수 있다.
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公开(公告)号：KR1020100061217A
公开(公告)日：2010-06-07
申请号：KR1020080120127
申请日：2008-11-28
Applicant: 한국전자통신연구원
IPC: H04B10/07 , H04B10/03 , H04B10/2581
Abstract: PURPOSE: An optical module and an optical network unit with defect detection in a passive optical network are provided to prevent the occurrence of an optical signal transmission failure in an optical subscriber network. CONSTITUTION: A laser diode driving unit(622) drives a laser diode(621), and a conversion unit(623) converts the optical signal outputted from the laser diode into an electric signal. A direct current component remover(624) removes the direct current component of the converted electric signal, and a control unit(625) analyzes the electric signal outputted from the direct current component removal. The controller inactivates the laser diode driving unit according to the analyzed result.
Abstract translation: 目的：提供一种在无源光网络中具有缺陷检测的光模块和光网络单元，以防止在光用户网络中发生光信号传输失败。 构成：激光二极管驱动单元（622）驱动激光二极管（621），转换单元（623）将从激光二极管输出的光信号转换为电信号。 直流元件去除器（624）去除转换的电信号的直流分量，并且控制单元（625）分析从直流分量去除输出的电信号。 控制器根据分析结果使激光二极管驱动单元失效。
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公开(公告)号：KR1020070061197A
公开(公告)日：2007-06-13
申请号：KR1020060062678
申请日：2006-07-04
Applicant: 한국전자통신연구원
CPC classification number: H04L49/40 , H04L12/10 , H04L49/101 , H04L49/552
Abstract: An ATCA(Advanced Telecom Computing Architecture) backplane device and an ATCA switch system using the same are provided to mount two switch boards in a duplex structure and support a uplink-dedicated RTM board connected with the two switch boards without reducing the number of user matching ports. The first backplane(310) provides a power management interface defined in the first region(Zone1) of an ATCA standard, an IPMB(Platform Management Bus) interface(102) for a platform management, a base interface(103) for exchanging control information between slots defined in the second region(Zone2), and a fabric interface(103) for exchanging packet data between slots, among the first and second switch slots and a plurality of node slots. Self-managers(205,206) manage states of boards, which are mounted at the first and second switch slots and the plural node slots, and operations of turning on/off power through the IPMB interface(102) of the first backplane(310). The second backplane(320) provides an additional fabric interface(301) among the first and second switch slots and the multiple node slots through the third region(Zone3) of the ATCA standards.
Abstract translation: 提供了ATCA（高级电信计算体系结构）背板设备和使用该ATCA交换机的ATCA交换机系统，将两个交换板安装在双工结构中，并支持与两个交换板连接的上行专用RTM板，而不会减少用户匹配的数量 端口。 第一背板（310）提供在ATCA标准的第一区域（Zone1）中定义的功率管理接口，用于平台管理的IPMB（平台管理总线）接口（102），用于交换控制信息的基本接口（103） 在第二区域（Zone2）中定义的时隙之间，以及用于在第一和第二交换机时隙之间的时隙之间交换分组数据的结构接口（103）和多个节点时隙。 自管理器（205,206）管理安装在第一和第二开关槽和多个节点插槽处的板的状态，以及通过第一背板（310）的IPMB接口（102）打开/关闭电源的操作。 第二背板（320）在第一和第二交换机插槽之间提供附加的结构接口（301），并且通过ATCA标准的第三区域（Zone3）提供多个节点槽。
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公开(公告)号：KR1020070061065A
公开(公告)日：2007-06-13
申请号：KR1020060041352
申请日：2006-05-09
Applicant: 한국전자통신연구원
CPC classification number: H04L1/1845 , H04L1/0057 , H04L1/08 , H04L1/1628 , H04L1/1809 , H04L1/1819
Abstract: A method for retransmitting/decoding a codeword using feedback information and a transmitting/receiving apparatus are provided to improve the success probability of retransmission by configuring retransmission feedback information by repeating a code bit of the previously transmitted codeword for decoding a retransmission part in a receiving apparatus. An apparatus for retransmitting/decoding a codeword using feedback information includes an index dividing unit, a retransmitting division determining unit, and a transmission controlling unit. The index dividing unit shows a position of data to retransmit as index information in pre-set division information based on retransmission request information received from a receiving apparatus. The retransmitting division determining unit calculates wireless resources used for retransmission of packet data, compares the number of retransmitting division information among the calculated wireless resources with the number of the calculated wireless resources, and generates result information. The transmission controlling unit completes an information bit for retransmission by using the index information to fill the calculated wireless resources with a code bit to transmit, forms a retransmission codeword obtained by adding a parity bit stream to the completed information bit, and transmits the codeword to the receiving apparatus.
Abstract translation: 提供一种使用反馈信息重发/解码码字的方法和发送/接收装置，通过重复用于解码接收装置中的重传部分的先前发送的码字的码位来配置重传反馈信息来提高重传的成功概率 。 使用反馈信息重发/解码码字的装置包括索引分割单元，重传分割确定单元和传输控制单元。 索引划分单元基于从接收装置接收到的重发请求信息，示出作为索引信息重发的数据在预设分区信息中的位置。 重传分割确定单元计算用于分组数据的重发的无线资源，将计算出的无线资源中的重发分割信息的数量与计算出的无线资源的数量进行比较，并生成结果信息。 传输控制单元通过使用索引信息来完成用于重传的信息比特，以用要发送的码位来填充所计算的无线资源，形成通过将奇偶校验比特流加到完成的信息比特而获得的重发码字，并将码字发送到 接收装置。
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公开(公告)号：KR1020060069055A
公开(公告)日：2006-06-21
申请号：KR1020040108146
申请日：2004-12-17
Applicant: 한국전자통신연구원
CPC classification number: H04L69/321 , H04L12/185 , H04L69/22 , H04N21/434
Abstract: 본 발명에 의한 가입자 라인 인터페이스 및 IP 방송 시스템은 라인 인터페이스 장치는 다채널 방송 스트림을 수신하여 직병렬변환을 포함하는 정합을 수행하는 방송분배인터페이스부; 데이터 스트림을 수신하여 직병렬변환을 포함하는 정합을 수행하는 상위인터페이스부; 및 상기 방송분배인터페이스와 상위인터페이스부로부터 방송스트림과 데이터 스트림을 수신하여 소정의 우선순위에 따라 다중화하는 MAC/물리부;를 포함하는 것을 특징으로 하며, 망의 혼잡으로 인한 방송 스트림의 손실이나 지연면에서 좋은 성능을 가지며, 가입자의 채널 변경 시간을 최소한으로 줄일 수 있고, 복잡한 기능이 하드웨어적으로 구현되며 기존 시스템과 구조적인 면에서 유사하여 비용이 크게 증가하지 않을뿐만 아니라 방송을 위한 별도의 하드웨어적인 추가 장비 없이도 경제적인 방법으로 통신방송의 융합이 가능하다.
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Patent Agency Ranking
公开(公告)号：KR100565942B1
公开(公告)日：2006-03-30
申请号：KR1020030056071
申请日：2003-08-13
Applicant: 한국전자통신연구원
IPC: H04L12/28
CPC classification number: H04Q11/0067 , H04J14/0226 , H04J14/0227 , H04J14/0232 , H04J14/0247 , H04J14/0252 , H04J14/0282 , H04L12/2801 , H04L47/2441 , H04L69/22 , H04L2012/561 , H04L2012/5658 , H04L2012/5664 , H04N21/2381 , H04N21/4381 , H04N21/643 , H04Q11/0066 , H04Q11/0071
Abstract: Disclosed is a broadcasting and communication combining system based on an Ethernet and a method thereof for providing an Internet service and a multi-channel broadcasting service. The broadcasting and communication combining system and method based on an Ethernet uses Ethernet broadcasting frames on a data communication network to provide a wideband Internet service and a multi-channel digital broadcasting service. To support both Internet and broadcasting with one wavelength, the broadcasting traffic is converted to Ethernet data and multiplexed, and the multiplexed broadcasting traffic comprising the same band (one wavelength) of Internet data is transferred to a subscriber network. The subscriber terminal unit discriminates between Internet traffic and broadcasting traffic and outputs the Internet traffic and the broadcasting traffic to the final receiver.
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公开(公告)号：KR1020050041785A
公开(公告)日：2005-05-04
申请号：KR1020030077058
申请日：2003-10-31
Applicant: 한국전자통신연구원
IPC: H04L7/04
Abstract: 본 발명은 목적지 노드와 소스 노드간의 서비스 클럭을 동기화하는 비동기 패킷 전달망의 동기 서비스 클럭 복원방법에 관한 것이다.
본 발명은, 입력 패킷의 도착 여부 및 도착 제한시간 초과 여부를 체크하는 제1단계; 상기 패킷이 도착하거나 또는 패킷 도착 제한시간이 초과하면 현재 시점에서 패킷간 도착 시간간격을 갱신하는 제2단계; 현재 시점으로부터 이전의 제1 특정 시점까지의 제1구간에서의 평균 패킷간 도착 시간간격(AIPT(t)) 및 현재 시점으로부터 이전의 제2 특정 시점까지의 제2구간에서의 AIPT(t)를 계산하는 제3단계; 상기 제1구간의 AIPT(t) 및 제2구간의 AIPT(t)의 차이값과 미리 설정된 특정값을 비교하는 제4단계; 상기 차이값이 상기 특정값보다 큰 경우 가중치 구간 평균법을 적용하고, 작은 경우 오차보정 구간 평균법을 적용하여 수신된 패킷에 대한 AIPT를 계산하는 제5단계; 및 상기 제2구간에서의 AIPT에 따른 기준 클럭을 이용하여 상기 위상동기루프(PLL)을 통해 동기 서비스 클럭을 복원하는 제6단계를 포함한다.
본 발명에 의하면, 비동기 패킷망에서 발생할 수 있는 지연변이 폭의 증가문제에 대하여 수신 정보를 적절히 가공하여 기존의 동기 패킷망을 이용한 클럭 복원방법에 적용이 가능 가능한 수준으로 축소할 수 있고 기존 방법에 의한 기술 및 자원을 최대한 활용할 수 있으며, 부동 소수점 연산이 불필요하여 디지털 신호 처리 장치 등이 필요 없고 하드웨어 구현이 용이하다.-
8.发明公开
公开(公告)号：KR1020050022110A
公开(公告)日：2005-03-07
申请号：KR1020030059133
申请日：2003-08-26
Applicant: 한국전자통신연구원
IPC: H04B10/25
CPC classification number: H04J14/0204 , H04J14/025 , H04J14/0282
Abstract: PURPOSE: A PON(Passive Optical Network) system for a broadcast service and a method thereof are provided to reduce power of an optical amplifier used in an OLT(Optical Line Terminal) because a broadcast wavelength does not pass through a splitter, and thus, reduce a cost. CONSTITUTION: An OLT(410) receives a broadcast signal and uplink/downlink data, divides each optical wavelength of them, and transmits the divided broadcast wavelength and downlink data wavelength to a PON network and the divided uplink data wavelength to an Internet network. A broadcast module(403) passes the uplink/downlink data wavelength therethrough as it is, extracts only the broadcast wavelength, performs photoelectric conversion on it, and transmits a broadcast signal, which has been converted into the electric signal, through a coaxial cable. A splitter(404) splits the downlink data wavelength to various rates, collects the received uplink data wavelengths and transmits them to the OLT(410). An ONU data module(406) connected with the splitter(404) transmits the downlink data wavelength received from the splitter(404) to a terminal of a subscriber, and transmits the uplink data wavelength received from the terminal of the subscriber to the splitter(404).
Abstract translation: 目的：广播业务的PON（Passive Optical Network，被动光网络）系统及其方法，由于广播波长不通过分路器，所以能够降低OLT（Optical Line Terminal，光线路终端）中使用的光放大器的功率， 降低成本。 构成：OLT（410）接收广播信号和上行/下行数据，对它们的每个光波长进行分割，并将划分的广播波长和下行链路数据波长发送到PON网络，并将划分的上行链路数据波长发送到因特网。 广播模块（403）原样通过上行/下行数据波长，仅提取广播波长，对其进行光电转换，并通过同轴电缆发送已转换为电信号的广播信号。 分路器（404）将下行链路数据波长分解成各种速率，收集所接收的上行链路数据波长并将其发送到OLT（410）。 与分离器（404）连接的ONU数据模块（406）将从分离器（404）接收的下行链路数据波长发送到用户的终端，并将从用户的终端接收到的上行链路数据波长发送到分离器 404）。
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9.发明公开
公开(公告)号：KR1020040107015A
公开(公告)日：2004-12-20
申请号：KR1020030037791
申请日：2003-06-12
Applicant: 한국전자통신연구원
IPC: H04L12/28
Abstract: PURPOSE: A method for matching VDSL subscribers in an EPON network and an apparatus therefor are provided to unify subscriber access networks by providing a high-speed data communication service and a voice service through an EPON network, thereby reducing the cost required for installing and operating the subscriber access network. CONSTITUTION: A plurality of VDSL(Very High-data rate digital Subscriber Line) splitters(31) are connected with VDSL subscriber lines respectively to separate inputted VDSL signals into data traffic and POTS(Plain Old Telephone Service) signals, and transmit the data traffic and POTS signals to the corresponding VDSL subscriber line in different bands. A plurality of VDSL modules(32) receive the separated data traffic from the VDSL splitters(31) to demodulate the data traffic, and then to output the demodulated data traffic to an Ethernet switch(34), or to modulate data transmitted from the Ethernet switch(34) into VDSL signals, and then to transmit the VDSL signals to the corresponding VDSL splitter(31). A POTS module(33) codes POTS signals into digital signals to configure an Ethernet frame or extracts digital type POTS signals from each channel of the inputted Ethernet frame to demodulate the POTS signals into analog signals, and then to transmit the analog signals to the corresponding VDSL splitter(31). The Ethernet switch(34) selectively switches the plurality of VDSL modules(32) and the POTS module(33) to interface with an EPON(Ethernet Passive Optical Network) media access controller(35). The EPON media access controller(35) transmits upstream data from the Ethernet switch(34) to an EPON network at allocated time in consideration of the priority, and transmits the downstream data to the corresponding VDSL modules(32) or the POTS module(33).
Abstract translation: 目的：提供一种用于匹配EPON网络中的VDSL用户及其设备的方法，以通过EPON网络提供高速数据通信服务和语音服务来统一用户接入网络，从而降低安装和操作所需的成本 用户接入网络。 构成：多个VDSL（超高数据速率数字用户线）分离器（31）分别与VDSL用户线路连接，以将输入的VDSL信号分离成数据业务和POTS（普通老式电话业务）信号，并传输数据业务 POTS信号到不同频段的相应VDSL用户线。 多个VDSL模块（32）从VDSL分离器（31）接收分离的数据业务以解调数据业务，然后将解调的数据业务输出到以太网交换机（34），或者调制从以太网发送的数据 开关（34）变为VDSL信号，然后将VDSL信号发送到相应的VDSL分路器（31）。 POTS模块（33）将POTS信号编码成数字信号以配置以太网帧，或者从输入的以太网帧的每个信道中提取数字类型的POTS信号，以将POTS信号解调为模拟信号，然后将模拟信号发送到相应的 VDSL分路器（31）。 以太网交换机（34）有选择地将多个VDSL模块（32）和POTS模块（33）切换成与EPON（以太网无源光网络）介质访问控制器（35）接口。 考虑到优先级，EPON媒体接入控制器（35）在分配的时间将上行数据从以太网交换机（34）发送到EPON网络，并将下行数据发送到对应的VDSL模块（32）或POTS模块 ）。
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公开(公告)号：KR1020100060903A
公开(公告)日：2010-06-07
申请号：KR1020080119704
申请日：2008-11-28
Applicant: 한국전자통신연구원
IPC: H04B10/2581 , H04B10/27
CPC classification number: H04Q11/0067 , H04Q2011/0079 , H04Q2011/0086
Abstract: PURPOSE: An ONT(Optical Network Terminal), an OLT(Optical Line Terminal) and GPON(Gigabit Passive Optical Network) comprising these are provided to apply variably generated delay time generated with the variable in bit unit by data bus size by UL/DL transmission rate and by clock frequency to distance measurement thereby exactly measuring distance of ONTs in bit unit. CONSTITUTION: A DL(DownLink) frame demultiplexer(413) extracts a distance measurement request message by inverse multiplexing of a downward frame. An UL(UpLink) transmission controller(414) controls transmission time of an UL frame by calculation of time for start bit search time of the downward frame and UL/DL clock deviation. An UL frame multiplexer](415) performs delayed output of upward frame as time of calculated byte unit. A bit unit delay unit(416) performs delay output of the upward frame as time of calculated residual bit unit.
Abstract translation: 目的：提供包括它们的ONT（光网络终端），OLT（光线路终端）和GPON（千兆位被动光网络），以通过UL / DL的数据总线大小来应用可变地生成的以比特为单位的延迟时间 传输速率和时钟频率到距离测量，从而精确测量ONT的位数单位。 构成：DL（下行链路）帧解复用器（413）通过向下帧的反向多路复用来提取距离测量请求消息。 UL（UpLink）传输控制器（414）通过计算下行帧的起始比特搜索时间和UL / DL时钟偏差的时间来控制UL帧的传输时间。 UL帧复用器（415）作为计算字节单位的时间执行向上帧的延迟输出。 位单位延迟单元（416）作为计算出的残留位单元的时间执行向上帧的延迟输出。
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