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公开(公告)号：KR100483009B1
公开(公告)日：2005-04-19
申请号：KR1020030015080
申请日：2003-03-11
Applicant: 한국전자통신연구원 , 학교법인 한국정보통신학원
IPC: H04L12/403
Abstract: 본 발명은 수동형 광 가입자망의 폴링 기반의 매체 접근 제어 시스템 및 방법에 관한 것이다. a) 상기 OLT로부터의 등록 요청 프레임인 광고 프레임 (Advertise Frame) 수신하여 상기 OLT로 폴링 그룹 가입 프레임(Registration Frame)을 전송하고 폴링 테이블에 등록하여 프레임 수신을 기다리는 단계; b) 상기 OLT로부터 프레임을 수신하고 상기 프레임 타입을 판단하는 단계; c) 상기 판단된 프레임 타입이 데이터 프레임이면 상위 계층으로 프레임을 전송하고 상기 a) 단계로 되돌아가서 프레임 수신을 기다리는 단계; d) 상기 판단된 프레임 타입이 제어 프레임이면 폴링 프레임인지를 확인하는 단계; e) 상기 확인 결과, 상기 제어 프레임이 폴링 프레임이면 상위 계층으로부터의 폴링 그룹 탈퇴 요청이 있는지를 확인하는 단계; 및 f) 상기 확인 결과, 폴링 그룹 탈퇴 요청이 없으면 한번의 폴링주기 동안 전송 가능한 소정의 임계치 이하의 데이터 프레임을 상기 OLT로 전송하고 전송 종료를 알리는 단계를 포함한다. 본 발명에 따르면 ONT에서 전송 가능한 데이터 프레임의 임계치를 설정함으로써 소수 가입자의 대역폭 독점에 따른 서비스 품질 저하를 방지하고, 소수의 가입자에 의한 채널 독점을 사전에 방지함으로써 기존 가입자의 최대 폴링 주기가 예측 가능하며 신규 폴링 등록자의 긴 대기시간 발생을 막을 수 있다.
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公开(公告)号：KR1020040080190A
公开(公告)日：2004-09-18
申请号：KR1020030015080
申请日：2003-03-11
Applicant: 한국전자통신연구원 , 학교법인 한국정보통신학원
IPC: H04L12/403
CPC classification number: H04J3/0682 , H04Q11/0067 , H04Q2011/0064 , H04Q2011/0088
Abstract: PURPOSE: An MAC method of a PON(Passive Optical Network) and a system thereof are provided to set a threshold value to prevent a service quality deterioration caused by a bandwidth monopoly, thereby predicting a maximum polling period of an existing subscriber and preventing a long standby time of new polling registers. CONSTITUTION: Each ONT(Optical Network Termination) waits for a registration request frame(S401), transmits a polling group subscription frame to an OLT(Optical Line Terminator), and registers in a polling table(S402). Each ONT receives a frame from the OLT to compare the frame with a destination address, and abandons the frame if the frame does not have the identical address(S403-S405). If a self MAC address is identical with the destination address, each ONT checks a frame type(S406). If the received frame is a control frame, the ONT confirms whether the frame is a polling frame(S408). If so, the ONT first confirms whether a polling group secession request is received from the upper layer(S409). If so, the procedure is completed.
Abstract translation: 目的：提供PON（无源光网络）的MAC方法及其系统，以设置阈值，以防止由带宽垄断导致的服务质量恶化，从而预测现有用户的最大轮询周期并防止长 新的轮询寄存器的待机时间。 构成：每个ONT（光网络终端）等待注册请求帧（S401），将轮询组订阅帧发送到OLT（光线路终端器），并在轮询表中注册（S402）。 每个ONT从OLT接收帧以将该帧与目的地地址进行比较，如果该帧不具有相同的地址则放弃该帧（S403-S405）。 如果自身MAC地址与目的地地址相同，则每个ONT检查帧类型（S406）。 如果接收的帧是控制帧，则ONT确认帧是否是轮询帧（S408）。 如果是，则ONT首先确认是否从上层接收到轮询组脱机请求（S409）。 如果是这样，程序完成。
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公开(公告)号：KR100730363B1
公开(公告)日：2007-06-19
申请号：KR1020030079380
申请日：2003-11-11
Applicant: 학교법인 한국정보통신학원 , 삼성전자주식회사
IPC: H04B10/00
CPC classification number: H01S5/5036 , H01S5/005 , H01S5/0064 , H01S5/509
Abstract: 본 발명은 다중 모드의 페브리 페롯 레이저 다이오드를 이용하여 외부로부터 수신되는 광 신호의 파장을 변환하여 출력하는 장치 및 그 방법에 관한 것이다.
본 발명에서는, 프로브 광 신호의 편광을 조절하여 TM 편광의 프로브 광 신호로 출력시키며, 외부로부터 수신되는 펌프 광 신호의 편광을 조절하여 TE 편광의 펌프 광 신호로 출력시킨다. 이후, 출력된 각 신호의 편광과 무관하게 프로브 광 신호와 펌프 광 신호를 결합하며, 이중 프로브 광 신호와 펌프 광 신호의 각 모드가 페브리 페롯 레이저 다이오드의 TM(Transverse Magnetic) 및 TE(Transverse Electric) 모드에 맞도록 세부적으로 조절하여 출력한다. 이후, 페브리 페롯 레이저 다이오드는 TE 편광의 펌프 광 신호를 주입 잠김하여 TM 모드에 따른 흡수골(-출력 광신호의 크기가 최저인 지점-)의 위치를 변위시킴으로써, TE 편광의 펌프 광 신호의 파장을 상기 TM 편광의 프로브 광 신호의 파장으로 변환하여 출력한다.
이를 통하여, 넓은 파장 변환 대역을 제공함과 동시에, 반전 및 비반전의 파장 변환을 용이하게 수행할 수 있다.
페브리 페롯 레이저 다이오드, 파장 변환, 흡수골, 주입 잠김, 변위-
公开(公告)号：KR100452945B1
公开(公告)日：2004-10-14
申请号：KR1020020000697
申请日：2002-01-07
Applicant: 학교법인 한국정보통신학원
CPC classification number: H04J14/0227 , H04J14/0241 , H04J14/0278 , H04Q11/0066 , H04Q2011/0064 , H04Q2011/0083 , H04Q2011/0084
Abstract: A dynamic wavelength management in an optical burst switching system guarantees QoS by using wavelength resources effectively and using only a basic offset time for guaranteeing a specified blocking loss rate without incurring any additional delay. A control header packet and data having a plurality of wavelengths are fed to a core node asynchronously, and the control header packet is processed in a control plane, during which a wavelength group list is created corresponding to a number of classes and the respective group list is dynamically reconstructed corresponding to each QoS group.
Abstract translation: 光突发交换系统中的动态波长管理通过有效利用波长资源保证QoS，并且仅使用基本偏移时间来保证指定的阻塞丢失率而不会引起任何额外的延迟。 将控制头部分组和具有多个波长的数据异步地馈送到核心节点，并且在控制平面中处理控制头部分组，在该控制平面期间创建对应于多个类别和相应的组列表的波长组列表 与每个QoS组对应地动态重建。
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公开(公告)号：KR100434335B1
公开(公告)日：2004-06-04
申请号：KR1020010074265
申请日：2001-11-27
Applicant: 학교법인 한국정보통신학원
CPC classification number: H04Q11/0066 , H04Q11/0071 , H04Q2011/0086 , H04Q2011/0088
Abstract: A control packet of an OBS network comprises a label which is switched for fast transmitting each packet from a source host to a corresponding destination host, a wavelength ID for distinction of channel and switching, a CoS field providing different type of CoS, an offset time indicating the difference between an arrival time of the control packet and an arrival time of the data burst, a data burst size and a CRC for error detecting. A data burst generation algorithm uses hysterisis characteristics in the queueing model for an ingress edge node in an optical burst switching network. This algorithm adaptively changes the data burst size according to the offered load and offers high average data burst utilization with a lower timer operation.
Abstract translation: OBS网络的控制分组包括一个标签，该标签被切换用于将每个分组从源主机快速传输到相应的目标主机，用于区分信道和交换的波长ID，提供不同类型的CoS的CoS字段，偏移时间 指示控制分组的到达时间与数据突发的到达时间之间的差异，数据突发大小和用于错误检测的CRC。 数据突发生成算法在光突发交换网络中的入口边缘节点的排队模型中使用滞后特性。 该算法根据提供的负载自适应地改变数据突发大小，并以较低的定时器操作提供高平均数据突发利用率。
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Patent Agency Ranking
公开(公告)号：KR1020030060160A
公开(公告)日：2003-07-16
申请号：KR1020020000697
申请日：2002-01-07
Applicant: 학교법인 한국정보통신학원
CPC classification number: H04J14/0227 , H04J14/0241 , H04J14/0278 , H04Q11/0066 , H04Q2011/0064 , H04Q2011/0083 , H04Q2011/0084
Abstract: PURPOSE: A method for managing dynamic wavelength in an OBS(Optical Burst Switching) network is provided to use a dynamic wavelength managing method of efficiently using wavelength, thereby securing loss rates without additional delay by using a basic offset time. CONSTITUTION: A control header packet asynchronously arrives at a control plane(100) through many input ports(220a-220n) and a control channel. A wavelength manager(150) logically writes a wavelength group list according to the number of classes, and dynamically changes the list according to a QoS(Quality of Service) request of each class group. The control header packet is electrically converted through an optical/electric converter(110). A router(120) determines a node, selects the most efficient path, and performs a network managing function. The control header packet is switched through an electric switch(130), and is inputted to a scheduler(140). The scheduler(140) searches QoS variables by the wavelength manager(150), and selects a wavelength group list in accordance with QoS requirements.
Abstract translation: 目的：提供一种用于管理OBS（光突发交换）网络中的动态波长的方法，以使用有效使用波长的动态波长管理方法，从而通过使用基本偏移时间来保证丢失率而没有额外的延迟。 构成：控制头包通过许多输入端口（220a-220n）和控制信道异步到达控制平面（100）。 波长管理器（150）根据类的数量逻辑地写波长组列表，并且根据每个类组的QoS（服务质量）请求动态地改变列表。 控制标题包通过光/电转换器（110）电转换。 路由器（120）确定节点，选择最有效的路径，并执行网络管理功能。 控制报头分组通过电开关（130）切换，并被输入到调度器（140）。 调度器（140）通过波长管理器（150）搜索QoS变量，并且根据QoS要求选择波长组列表。
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公开(公告)号：KR1020030043206A
公开(公告)日：2003-06-02
申请号：KR1020010074265
申请日：2001-11-27
Applicant: 학교법인 한국정보통신학원
CPC classification number: H04Q11/0066 , H04Q11/0071 , H04Q2011/0086 , H04Q2011/0088
Abstract: PURPOSE: A control packet for an OBS(Optical Burst Switching) network and a method for generating a data burst are provided to decrease the size of a requested burst by limiting the maximum queuing delay time and increasing a data burst use rate in a burst input traffic. CONSTITUTION: If a timer value is greater than a threshold value, or the timer value is less than the threshold value and a size value of a queue is greater than a change condition value(Qlow), a new burst is generated(S12,S14,S16). If the size value of the queue is greater than a change condition value(Qhigh)(S18), a count number is increased by 1(S30). If the size value of the queue is less than the change condition value(Qlow), the count number is decreased by 1(S40). A crossover count number is compared with an upper limit value and a lower limit value(S32,S34,S42,S44). If the crossover count number is greater than the upper limit value, a burst size is increased(S36). If the crossover count number is greater than the lower limit value, the burst size is decreased(S46).
Abstract translation: 目的：提供用于OBS（光突发交换）网络的控制分组和用于产生数据突发的方法，以通过限制最大排队延迟时间并增加突发输入中的数据突发使用率来减小所请求的突发的大小 交通。 构成：如果定时器值大于阈值，或者定时器值小于阈值，并且队列的大小值大于改变条件值（Qlow），则产生新的脉冲串（S12，S14 ，S16）。 如果队列的大小值大于改变条件值（Qhigh）（S18），则计数值增加1（S30）。 如果队列的大小值小于变更条件值（Qlow），则计数值减1（S40）。 将交叉计数值与上限值和下限值进行比较（S32，S34，S42，S44）。 如果交叉计数值大于上限值，则突发大小增加（S36）。 如果交叉计数值大于下限值，则突发尺寸减小（S46）。
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公开(公告)号：KR1020010025595A
公开(公告)日：2001-04-06
申请号：KR1020010001252
申请日：2001-01-10
Applicant: 학교법인 한국정보통신학원
IPC: H04B10/03 , H04B10/032 , H04B10/27
CPC classification number: H04J14/0295 , H04B10/032 , H04J14/0227 , H04J14/0241 , H04J14/0284 , H04Q11/0066 , H04Q2011/0077 , H04Q2011/0081
Abstract: PURPOSE: A method for protecting and switching an MPλS in the optical internet is provided to find and correct problems rapidly in the case of causing problems in links and nodes by constructing a routing table with both working lables and protection lables simultaneously. CONSTITUTION: A routing table(10) consists of working lables(20) and protection lables(30) simultaneously. Each of optical lables(20,30) has information about an optical path to enable to switch in an OXC(50), which consists of four IDs, - input port IDs(20a,30a), input wavelength IDs(20b,30b), output port IDs(20c,30c), and output wavelength IDs(20d, 30d). A router(40) is structured in the edge network of the MPλS network. The OXC(50) is installed in the core network. A reference number(42) is a control channel, a reference number(52) is a data channel, and #1, ...,#5 are link numbers.
Abstract translation: 目的：提供一种在光互联网中保护和切换MPλS的方法，通过同时构建工作标签和保护标签的路由表，在链路和节点出现问题的情况下快速查找和纠正问题。 规定：路由表（10）同时由工作标签（20）和保护标签（30）组成。 每个光学标签（20,30）具有关于光路的信息，以使得能够切换由四个ID，输入端口ID（20a，30a），输入波长ID（20b，30b）组成的OXC（50） ，输出端口ID（20c，30c）和输出波长ID（20d，30d）。 路由器（40）被构造在MPλS网络的边缘网络中。 OXC（50）安装在核心网络中。 参考号（42）是控制信道，参考号（52）是数据信道，＃1，...，＃5是链路号。
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公开(公告)号：KR1020040007352A
公开(公告)日：2004-01-24
申请号：KR1020030079380
申请日：2003-11-11
Applicant: 학교법인 한국정보통신학원 , 삼성전자주식회사
IPC: H04B10/00
CPC classification number: H01S5/5036 , H01S5/005 , H01S5/0064 , H01S5/509
Abstract: PURPOSE: An optical wavelength conversion device using injection locking of an FP(Febry-Perot)-LD(Laser Diode) is provided to displace central wavelengths of an absorption block caused by injection locking characteristics for TM(Transverse Magnetic) and TE(Transverse Electric) polarized signals, thereby supplying wide wavelength conversion bands. CONSTITUTION: The first polarization controller(170) controls polarization of a pump optical signal, and outputs the pump optical signal for TE polarization. The second polarization controller(130) controls polarization of a probe optical signal, and outputs the probe optical signal for TM polarization. A PBS(Polarization Beam Separator)(150) couples the probe optical signal with the pump optical signal. An FP-LD(110) injection-locks the pump optical signal, displaces a position of an absorption block in accordance with a TM mode, and converts a wavelength of the pump optical signal into a wavelength of the probe optical signal. A circulator(140) outputs the probe optical signal.
Abstract translation: 目的：提供一种使用FP（Febry-Perot）-LD（激光二极管）的注入锁定的光学波长转换装置，用于取代由TM（横向磁性）和TE（横向电气）的注入锁定特性引起的吸收块的中心波长 ）极化信号，从而提供宽波长转换频带。 构成：第一偏振控制器（170）控制泵浦光信号的偏振，并输出用于TE偏振的泵浦光信号。 第二偏振控制器（130）控制探测光信号的偏振，并输出用于TM偏振的探测光信号。 PBS（偏振光束分离器）（150）将探测光信号与泵浦光信号耦合。 FP-LD（110）注射锁定泵浦光信号，根据TM模式移位吸收块的位置，并将泵浦光信号的波长转换成探测光信号的波长。 循环器（140）输出探测光信号。
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公开(公告)号：KR1020020081197A
公开(公告)日：2002-10-26
申请号：KR1020020060956
申请日：2002-10-07
Applicant: 학교법인 한국정보통신학원
IPC: H04L12/28
CPC classification number: H04L45/50 , H04L47/825 , H04L69/08
Abstract: PURPOSE: A structure of protocol used in an MPLS(Multi Protocol Label Switching) system is provided to simplify the structure of the protocol used in the MPLS system, so as to reduce the amount of packing processing and raise the speed by reflecting characteristics of a subscriber network. CONSTITUTION: An IP(Internet Protocol) core network is composed of a plurality of LSRs(Label Switch Routers) in charge of internal connections and a plurality of LERs(Label Edge Routers) in charge of connections between the plurality of LSRs and an external. A plurality of IP service providers are selectively connected to the plurality of LERs through specific access nodes. A plurality of clients are selectively connected to the plurality of LERs through specific access nodes. The protocol inside the IP core network is composed of an MAC(Medium Access Control), an MPLS header and an IP payload. And the IP payload includes a plurality of IP packets.
Abstract translation: 目的：提供MPLS（Multi Protocol Label Switching，多协议标签交换）系统中使用的协议结构，简化MPLS系统中使用的协议结构，减少打包处理的数量，并通过反映 用户网络。 构成：IP（互联网协议）核心网络由负责内部连接的多个LSR（标签交换路由器）和负责多个LSR之间的连接的外部的多个LER（标签边缘路由器）组成。 多个IP服务提供商通过特定接入节点选择性地连接到多个LER。 多个客户端通过特定接入节点选择性地连接到多个LER。 IP核网络内的协议由MAC（媒体访问控制），MPLS报头和IP有效载荷组成。 并且IP有效载荷包括多个IP分组。
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