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公开(公告)号：KR1020120070142A
公开(公告)日：2012-06-29
申请号：KR1020100131576
申请日：2010-12-21
Applicant: 한국전자통신연구원
CPC classification number: H04L1/0003 , H04L1/0009 , H04L1/201
Abstract: PURPOSE: A method for detecting return link packet errors in a hub in communication with a satellite terminal and an apparatus thereof are provided to reduce the loss of packets while the satellite terminal transmits the packets to a return link. CONSTITUTION: A transmitting part(730) transmits a normal link packet to a satellite terminal. A receiving part(710) receives return link packets from the satellite terminal. An error verifying part(750) successively combines the return link packets to generate a first return link packet. The errors of the packets are verified by comparing/analyzing the first return link packet and a subsequently received second return link packet according to the data length of the first return link packet.
Abstract translation: 目的：提供一种用于检测与卫星终端通信的集线器中的返回链路分组错误的方法及其装置，以便在卫星终端将分组传送到返回链路的同时减少分组丢失。 构成：发送部（730）向卫星终端发送正常的链路分组。 接收部分（710）从卫星终端接收返回链路分组。 错误验证部分（750）连续组合返回链路分组以生成第一返回链路分组。 通过根据第一返回链路分组的数据长度比较/分析第一返回链路分组和随后接收的第二返回链路分组来验证分组的错误。
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公开(公告)号：KR1020110068134A
公开(公告)日：2011-06-22
申请号：KR1020090124977
申请日：2009-12-15
Applicant: 한국전자통신연구원
CPC classification number: H04W36/0011 , H04W36/14 , H04W36/32 , H04W80/04
Abstract: PURPOSE: A 3 layer handover method and system thereof are provided to use fast L3 handover technique which uses a tunnel and to reduce the registration time and agent discovery. CONSTITUTION: A CN(Correspondent Node) and an FN(Fixed Node) transmit packet data(S340). A HA(Home Agent) and an MR(Mobile Router) are registered through a tunnel between the HA and the MR on a wireless network(S250, S255). The tunnel is released between the HA and the MR. The CN and the FN directly transmit packet data through the HA and the MR(S260).
Abstract translation: 目的：提供3层切换方法及其系统，以使用快速L3切换技术，其使用隧道并减少注册时间和代理发现。 构成：CN（通讯节点）和FN（固定节点）发送分组数据（S340）。 HA（归属代理）和MR（移动路由器）通过无线网络上的HA和MR之间的隧道进行注册（S250，S255）。 隧道在医管局和医管局之间释放。 CN和FN直接通过HA和MR发送分组数据（S260）。
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公开(公告)号：KR100565943B1
公开(公告)日：2006-03-30
申请号：KR1020030096769
申请日：2003-12-24
Applicant: 한국전자통신연구원
Abstract: 본 발명은 파장 대역 경로 기반의 광패킷 레이블 스위칭 장치에 관한 것이다.
본 발명에서는 각각 N+1+N/L 개의 입출력 단자를 가지며 병렬로 구성된 L 개의 광 파장 스위치와, 상기 각 광 파장 스위치의 N/L 개의 출력단자 및 입력단자를 N/L 개의 광 섬유라인으로 연결하여 형성된 광섬유 패킷 지연기와, 상기 각 광 파장 스위치의 N 개의 입력 단자에 N 개의 광 섬유라인을 통해 연결된 N 개의 입력 라인카드와, 상기 각 광 파장 스위치의 한 개의 입력 단자에 광 섬유라인으로 연결된 파장 역다중기와, 상기 각 광 파장 스위치의 N 개의 출력단자에 N 개의 광섬유라인으로 연결된 N 개의 출력 라인카드 및, 상기 각 광 파장 스위치의 한 개의 출력단자에 광 섬유라인으로 연결된 파장 다중기를 포함한다.
본 발명의 실시 예에 따르면, 적은 수의 광섬유 지연선을 사용하면서도 패킷 손실율을 최소로 할 수 있다. 또한, 전달망에서 입출력 노드 간의 총 패킷 지연 시간이 매우 적어 IP 트래픽 뿐만 아니라 실시간 서비스가 요구되는 TDM 데이터의 수용에 유리한 효과를 가진다.
스위칭, 레이블, 지연기, 역다중기, 다중기, 광패킷-
公开(公告)号：KR100467321B1
公开(公告)日：2005-01-24
申请号：KR1020020033718
申请日：2002-06-17
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A controller structure of an optical burst switching network is provided to introduce offset time for data transmitted through a channel on a WDM optical link, thereby minimizing setup time without buffering a data burst and magnifying bandwidth efficiency. CONSTITUTION: A header packet transceiver(602) extracts header information from burst CCG(Control Channel Group) data, and capsulates the rest burst CCG data in Ethernet frame. A packet frame generator(603) generates new header information, and makes CCG data to be transmitted. A multiple forwarder(604) obtains output port number information and output label information from which the made CCG data are outputted, and transmits the obtained information to an electric switch matrix. A multiple scheduler(606) extracts burst length information from the burst CCG data, determines switching time and start time of a header packet, and buffers the burst CCG data to transmit the data. A multiple burst header packet transmitter(608) reads the CCG data, and transmits the CCG data. A switching controller(607) transmits a control signal. An E/O(Electric to Optical) converter(609) converts the CCG data into an optical signal.
Abstract translation: 目的：提供光突发交换网络的控制器结构，以便为通过WDM光链路上的信道传输的数据引入偏移时间，由此最小化建立时间而不缓冲数据突发和放大带宽效率。 构成：首标分组收发器（602）从突发CCG（控制信道组）数据中提取首标信息，并将以太网帧中的其余突发CCG数据封装。 分组帧生成器（603）生成新的报头信息，并且使CCG数据被发送。 多路转发器（604）获得输出端口号信息和从其输出制作的CCG数据的输出标签信息，并将获得的信息发送到电开关矩阵。 多调度器（606）从突发CCG数据中提取突发长度信息，确定首部分组的切换时间和开始时间，并缓冲突发CCG数据以发送数据。 多脉冲串标头分组发送器（608）读取CCG数据，并发送CCG数据。 切换控制器（607）发送控制信号。 E / O（电到光）转换器（609）将CCG数据转换成光信号。
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公开(公告)号：KR1020040037799A
公开(公告)日：2004-05-07
申请号：KR1020020066447
申请日：2002-10-30
Applicant: 한국전자통신연구원
CPC classification number: H04Q11/0066 , H04Q11/0005 , H04Q2011/0064 , H04Q2011/0084
Abstract: PURPOSE: A device of simulating an optical burst assembly for an optical burst switching network is provided to optimize burst size and burst assembling time when converging IP traffic in an optical packet edge router to assemble the IP traffic into one burst and passing the burst through an optical network, thereby improving service speed and service quality by advancing burstiness of the IP traffic. CONSTITUTION: An optical/electric converter(503) performs an optical/electric conversion process for a demultiplexed input optical frame of a wavelength demultiplexer(502). An optical frame disassembler(504) restores the converted optical frame to data, separates the data into plural individual packets, and distinguishes packet data from MPLS labels. A scheduler(509) inputs the MPLS labels to carry out an LIB lookup process, obtains new label information, and performs a scheduling process. An optical burst assembler(505) inputs the packet data to execute a burst assembling process, requests the scheduling process of the scheduler(509), and outputs an assembled burst. An electric switching unit(506) switches the outputted burst. An electric/optical converter(507) performs an electric/optical conversion process for the switched burst, and outputs the converted burst to a wavelength multiplexer(508).
Abstract translation: 目的：提供一种用于模拟光突发交换网络的光突发组合的装置，以在将IP流量聚合在光分组边缘路由器中时优化突发大小和突发组装时间，以将IP业务组合成一个突发并将该突发通过一个突发 光网络，从而通过提高IP流量的突发性来提高服务速度和服务质量。 构成：光/电转换器（503）对波分解复用器（502）的解复用的输入光学帧执行光/电转换处理。 光学帧分解器（504）将转换的光学帧恢复为数据，将数据分离成多个单独的分组，并将分组数据与MPLS标签区分开。 调度器（509）输入MPLS标签以进行LIB查找处理，获得新的标签信息，并执行调度处理。 光突发组合器（505）输入分组数据以执行突发组合处理，请求调度器（509）的调度过程，并输出组合的突发。 电切换单元（506）切换输出的脉冲串。 电/光转换器（507）对切换脉冲串执行电/光转换处理，并将转换的脉冲串输出到波长多路复用器（508）。
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Patent Agency Ranking
公开(公告)号：KR100407820B1
公开(公告)日：2003-12-01
申请号：KR1020010072641
申请日：2001-11-21
Applicant: 한국전자통신연구원
IPC: H04L12/28
Abstract: PURPOSE: A scheduler for an optical burst switching router and a method thereof are provided to minimize burst data loss by performing a scheduling in arrival order of burst data. CONSTITUTION: Channel information including arrival time information, offset time information and burst data length information of a header packet into which a burst data is inputted is received(41). Processing order information of a scheduling is generated on the basis of the arrival time information of burst data generated on the basis of the arrival time information of the header packet and the offset time information(42). An optical switch switching duration information is generated on the basis of the arrival time information and length information of the burst data(43). Output channel information is generated to output burst data received from an optical switch on the basis of a difference between a previously reserved activation-end time of the optical switch and an arrival time of new burst data to a transmission channel of an optical transmission path(44). Control information for controlling an optical switch fabric is generated on the basis of the processing order information of scheduling, the switching duration information of optical switch and the output channel information(45).
Abstract translation: 目的：提供一种用于光突发交换路由器的调度器及其方法，以通过按突发数据的到达顺序执行调度来使突发数据丢失最小化。 构成：接收包括输入突发数据的标题分组的到达时间信息，偏移时间信息和突发数据长度信息的信道信息（41）。 基于根据首标分组的到达时间信息和偏移时间信息生成的突发数据的到达时间信息生成调度的处理顺序信息（42）。 根据突发数据的到达时间信息和长度信息生成光开关切换持续时间信息（43）。 输出信道信息被生成以基于光开关的先前保留的激活结束时间与新突发数据到达光传输路径的传输信道的到达时间之间的差来输出从光开关接收的突发数据（ 44）。 基于调度的处理顺序信息，光开关的切换持续时间信息和输出信道信息（45）来生成用于控制光交换结构的控制信息。
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公开(公告)号：KR1020030014989A
公开(公告)日：2003-02-20
申请号：KR1020010049025
申请日：2001-08-14
Applicant: 한국전자통신연구원
IPC: H04B10/29
CPC classification number: H04Q11/0005 , H04Q2011/0045
Abstract: PURPOSE: An optical switching method and an apparatus therefor are provided to use an optical signal having a successive data format as a physical data format in an optical packet switch using a general optical transceiver. CONSTITUTION: An optical switch is switched so that an input terminal number is identical to an output terminal number(401). The optical switch judges an optical packet is inputted according to each channel(402). If the optical packet is inputted, the optical switch is switched to an output terminal having a destination number of the optical packet during a length of the optical packet(403). If the optical packet is not inputted, the optical switch judges whether an optical packet inputted from an other input terminal for the purpose of an output terminal switched to the input terminal in which the optical packet is not inputted exists(404). If the optical packet exists, the optical switch switches the optical packet to a current output terminal, retrieves an other empty output terminal, and switches a current input terminal to the retrieved output terminal(405).
Abstract translation: 目的：提供一种光学切换方法及其装置，以使用具有连续数据格式的光信号作为使用普通光收发器的光分组交换机中的物理数据格式。 构成：切换光开关，使得输入端子号与输出端子号相同（401）。 光开关根据各信道判断光分组是否被输入（402）。 如果光分组被输入，则光开关在光分组（403）的长度期间切换到具有光分组的目的地号码的输出终端。 如果没有输入光学分组，则光开关判断从另一个输入端子输入的输出端子切换到没有输入光学分组的输入端子的光分组是否存在（404）。 如果光分组存在，则光开关将光分组切换到电流输出端，检索另一空输出端，并将电流输入端切换到检索输出端（405）。
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公开(公告)号：KR1020020091331A
公开(公告)日：2002-12-06
申请号：KR1020010015905
申请日：2001-03-27
Applicant: 한국전자통신연구원
IPC: G02B26/00
Abstract: PURPOSE: A vertical directional coupler switch comprising two regions having a high extinction ratio and an ultra short length are provided which is appropriate for realizing a cross state and a bar state having a high extinction ratio over 30dB at an end of a device and having a very short coupling length. CONSTITUTION: According to the vertical directional coupler optical switch, the first and the second waveguide(10,20) have a coupling region divided into n regions whose refractive indexes can be controlled. A coupling intensity control layer(30) is inserted between the first and the second waveguide, and induces a switching operation of a cross state and a bar state at an end of the above coupling region by varying a coupling length of the above coupling region through a refractive index change. The refractive indexes of the first and the second waveguide and the coupling intensity control layer are controlled independently each other by a current injection or an electro-optic effect.
Abstract translation: 目的：提供一种垂直定向耦合器开关，其包括具有高消光比和超短长度的两个区域，其适合于在器件的端部实现具有超过30dB的高消光比的交叉状态和棒状态，并且具有 非常短的耦合长度。 构成：根据垂直方向耦合器光开关，第一和第二波导（10,20）具有被分成折射率可被控制的n个区域的耦合区域。 耦合强度控制层（30）插入在第一和第二波导之间，并且通过改变上述耦合区域的耦合长度通过上述耦合区域的耦合长度而引起在上述耦合区域的端部处的交叉状态和条状状态的切换操作 折射率变化。 第一和第二波导和耦合强度控制层的折射率通过电流注入或电光效应彼此独立地控制。
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公开(公告)号：KR100323585B1
公开(公告)日：2002-10-25
申请号：KR1019980035647
申请日：1998-08-31
IPC: G02F1/39
Abstract: 본 발명은 리튬나이오베이트(LiNbO
3 )나 전기광학 폴리머 등으로 구성된 마하-젠더(Mach-Zehnder)(MZ) 간섭계형 광변조기의 출력특성을 안정화시키기 위한 방법에 관한 것이다. 종래의 디더링 신호(Dithering signal)와 락인 측정(lock-in detection)을 이용한 광변조기 안정화 방법은, 바이어스 전압 제어를 위해 사용되는 에러신호(error signal)가 출력 광신호의 트래픽 특성에 따라서 달라지기 때문에 버스트한 입력신호에 대한 시스템의 적응적 제어가 불가능하다. 본 발명은 이러한 종래 문제점을 해결하고자 하는 것으로, 광변조기의 출력광 신호의 일부를 피드백받아 전기적신호로 검출하고, 전기적 신호가 오프(OFF)일 때만 출력광의 세기를 선택적으로 측정하여(Low-level sampling) 이를 최소화함으로서 광신호의 트래픽 특성에 관계 없이 버스트 모드에서도 항상 높은 소광비를 유지하도록 동작하고 평균 출력광의 열화를 보상해주는 전기광학 광변조가 바이어스 안정화 방법을 제공한다.-
公开(公告)号：KR1020000050318A
公开(公告)日：2000-08-05
申请号：KR1019990000079
申请日：1999-01-05
IPC: G02B6/00
Abstract: PURPOSE: A wave transformer is provided to cause the reflection rate of both arms of an interference system to be zero by using a semiconductor optical amplifier as a phase modulating unit. CONSTITUTION: A wave transformer includes a phase modulating unit which has a non-linear device such as a semiconductor optical device. The wave transformer comprises a probe light(1), an optical coupler(6), a signal light(17), an optical coupler(14), optical fibers(9,15), an optical coupler(12), an optical fiber(11), a phase modulating unit(10). The phase modulating unit(10) modulates the signal which is inputted to the input port(a) of the optical coupler(14) when the signal of the signal light(17) is inputted to the input port(b) of the optical coupler(14).
Abstract translation: 目的：提供一种波形变压器，通过使用半导体光放大器作为相位调制单元，使干涉系统的两臂的反射率为零。 构成：波变压器包括具有诸如半导体光学器件的非线性器件的相位调制单元。 波形变压器包括探测光（1），光耦合器（6），信号光（17），光耦合器（14），光纤（9,15），光耦合器（12），光纤 （11），相位调制单元（10）。 当信号光（17）的信号输入到光耦合器（14）的输入端口（b）时，相位调制单元（10）调制输入到光耦合器（14）的输入端口（a）的信号 （14）。
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