-
公开(公告)号：KR1020130023570A
公开(公告)日：2013-03-08
申请号：KR1020110086432
申请日：2011-08-29
Applicant: 한국전자통신연구원
CPC classification number: H04L1/0083 , H04L1/0061
Abstract: PURPOSE: A reverse direction link packet error detecting method in a satellite communication system using packet process data and sequence data is provided to minimize packet loss generated by reassembly errors of a received packet. CONSTITUTION: A central station receives a plurality of reverse direction link packets from a satellite terminal device. The central station generates a first reverse direction link packet by combining received reverse direction packets. The central station determines errors of a packet combination by comparing a second reverse direction link packet with the first reverse direction link packet.
Abstract translation: 目的：提供使用分组处理数据和序列数据的卫星通信系统中的反向链路分组错误检测方法，以最小化由接收分组的重组错误产生的分组丢失。 构成：中心站从卫星终端装置接收多个反向链路分组。 中心站通过组合接收到的反向分组来生成第一反向链路分组。 中心站通过将第二反向链路分组与第一反向链路分组进行比较来确定分组组合的错误。
-
公开(公告)号：KR1020120070065A
公开(公告)日：2012-06-29
申请号：KR1020100131465
申请日：2010-12-21
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A method for controlling handover and a method for detecting the loss of packets are provided to shorten times required for detecting mobility by using a return link encapsulation(RLE)-based trigger signal between networks as a handover-start-reference signal. CONSTITUTION: When a mobile router enters in a rainfall reduction section, a foreign agent to a wireless network is searched and registered and handover from a satellite network to a wireless network is executed based on an RLE-based trigger signal and a radio link trigger signal. When the mobile router exits from the rainfall reduction section, handover from the wireless network to the satellite network is executed based on the RLE-based trigger signal and a satellite link trigger signal(230).
Abstract translation: 目的：提供一种用于控制切换的方法和用于检测分组丢失的方法，以通过使用网络之间的基于返回链路封装（RLE）的触发信号来缩短检测移动性所需的时间作为切换起始参考信号。 规定：当移动路由器进入降雨部分时，搜索和注册到无线网络的外部代理，并且基于基于RLE的触发信号和无线电链路触发信号来执行从卫星网络到无线网络的切换 。 当移动路由器从降雨部分退出时，基于基于RLE的触发信号和卫星链路触发信号（230）执行从无线网络到卫星网络的切换。
-
公开(公告)号：KR1020110071222A
公开(公告)日：2011-06-29
申请号：KR1020090127728
申请日：2009-12-21
Applicant: 한국전자통신연구원
CPC classification number: H04L12/5692 , H04B7/185 , H04W36/005 , H04W36/02 , H04W36/14 , H04W80/04
Abstract: PURPOSE: A packet alignment time shortened method in the layer 3 hand over and a move mode satellite terminal device adopting the same are provided to minimize the packet alignment processing time by using the mobile-network technology of the IPv4 internet protocol base in the hand over to the wireless network. CONSTITUTION: A satellite network interface(310) forms a satellite link for data transmit and receive in a network of satellites. An wireless network interface(320) forms a radio link for data transmit and receive in an wireless network. A controller(330) is connected to the satellites network interface and the radio network interface. A controller processes transceiver data at the satellite link or the radio link. An order control determining unit(360) detects an order control packet received from the network of satellites, when the handover function is performed among the wireless network.
Abstract translation: 目的：提供第3层交接中的分组对准时间缩短方法，并提供采用该方法的移动模式卫星终端装置，以便通过使用IPv4互联网协议库的移动网络技术来最小化分组对准处理时间 到无线网络。 构成：卫星网络接口（310）形成卫星链路，用于卫星网络中的数据发射和接收。 无线网络接口（320）在无线网络中形成用于数据发送和接收的无线电链路。 控制器（330）连接到卫星网络接口和无线电网络接口。 控制器在卫星链路或无线电链路处理收发器数据。 当在无线网络中执行切换功能时，命令控制确定单元（360）检测从卫星网络接收到的命令控制分组。
-
公开(公告)号：KR100938281B1
公开(公告)日：2010-01-22
申请号：KR1020070130715
申请日：2007-12-14
Applicant: 한국전자통신연구원
Abstract: 본 발명은 다중 인터페이스를 갖는 이동 노드에서 링크 트리거 신호를 이용한 이종망 간의 핸드오버 방법에 관한 것으로서, 다중 인터페이스를 갖는 고속의 이동 노드(MN)가 링크 업/다운 트리거 신호를 이용하여 이종망(특히, 무선망/위성망) 간의 핸드오버를 수행함으로써, 고속의 이동 노드의 이동 속도에 상관없이 패킷 손실 및 세션의 단절을 방지하고 또한 단말 소모 전력을 현저히 절감시키고자 한다.
이를 위하여, 본 발명은, 다중 인터페이스를 갖는 이동 노드에서의 이종망 간의 핸드오버 방법에 있어서, 제1망에 위치한 상기 이동 노드가, 제2망접속 인터페이스를 수면상태로 유지하고 제1망접속 인터페이스를 활성화하여 제1망 서비스를 제공받는 제1망 서비스 수신 단계; 상기 이동 노드가 제2망 측으로 이동함에 따라 제2망 링크업 트리거 신호를 감지하면, 상기 제2망접속 인터페이스를 활성화 상태로 전환하여 핸드오버를 수행하는 핸드오버 단계; 및 상기 핸드오버를 수행한 이동 노드가 상기 활성화된 제2망접속 인터페이스를 통하여 제2망 서비스를 제공받는 제2망 서비스 수신 단계를 포함하는 것을 특징으로 한다.
이동 IP, 이동 노드, 핸드오버, 무선망, 위성망, 링크 트리거 신호Abstract translation: 提供用于防止会话断开和分组丢失的异构网络之间的切换方法，以通过链接上/下触发信号来控制无线网络和卫星网络之间的切换。 位于第一网络中的移动节点维持处于睡眠状态的第二网络连接接口（606）。 通过激活第一网络连接接口（607）来提供第一网络服务。 当移动节点移动到第二网络侧时，感测到第二网络链接触发信号。 第二网络连接接口被转换为活动状态，并进行切换。 执行切换的移动节点通过激活的第二网络连接接口接收第二网络服务。
-
公开(公告)号：KR100420949B1
公开(公告)日：2004-03-02
申请号：KR1020010049025
申请日：2001-08-14
Applicant: 한국전자통신연구원
IPC: H04B10/29
CPC classification number: H04Q11/0005 , H04Q2011/0045
Abstract: A method capable of optical packet switching even in a case where physical optical data in an optical packet switch has not the shape of a packet but the shape of continuous data, and a system therefore are provided. The optical switching method includes the steps of (a) detecting input terminals into which an optical packet is input, of an optical switch and switching the optical packet to destination output terminals of the optical packet, and (b) when there are the input terminals into which the optical packet is not inputted in step (a), detecting other input terminals into which the optical packet, which direct an output terminal among the plurality of output terminals connected to the input terminals, is inputted, and searching a blank output terminal and switching dummy data from the input terminal to the blank output terminal. Data having the shape of all input optical packets and data having not the shape of a packet but another shape can be switched into output terminals without omission, and thus data output when input data have the shape of continuous data maintain the shape of the continuous data.
Abstract translation: 即使在光分组交换机中的物理光数据不具有分组形状而是连续数据的形状的情况下也能够进行光分组交换的方法以及系统因此被提供。 该光切换方法包括以下步骤：（a）检测输入光分组的输入端，检测光开关的切换并将光分组切换到光分组的目的输出端，以及（b）当存在输入端 （a）中没有输入光分组的光分组的输入，检测其中输入引导连接到输入端子的多个输出端子中的输出端子的光分组的其他输入端子，以及搜索空白输出端子 并将伪数据从输入端子切换到空白输出端子。 具有所有输入光分组形状的数据和不具有分组形状但是具有其他形状的数据的数据可以在没有遗漏的情况下切换到输出端子，并且因此当输入数据具有连续数据的形状时输出数据保持连续数据的形状 。
-
Patent Agency Ranking
公开(公告)号：KR100407818B1
公开(公告)日：2003-11-28
申请号：KR1020010057005
申请日：2001-09-15
Applicant: 한국전자통신연구원
IPC: G02B6/35
Abstract: PURPOSE: A vertical directional coupler switch and a fabrication method thereof are provided, which have an extinction ratio of cross and bar states above 30 dB. CONSTITUTION: The vertical directional coupler switch includes the first and the second waveguide(32,34) having a switching operation induced section(SOIS) arranged symmetrically with equal refractive indexes in cross state and bar state respectively, and also having an extinction ratio enhanced section(ERES) arranged asymmetrically with difference refractive indexes in the above cross state and the above bar state respectively. The vertical directional coupler switch also includes a cladding layer which is inserted between two waveguides and includes a refractive index. The refractive index of the extinction ratio enhanced section is controlled independently by a current injection or an electro-optic effect.
Abstract translation: 目的：提供垂直定向耦合器开关及其制造方法，其具有30dB以上的交叉和条状消光比。 组成：垂直定向耦合器开关包括第一和第二波导（32,34），它们分别具有交叉状态和条状态下具有等折射率对称布置的开关操作诱导部分（SOIS），并且还具有消光比增强部分 （ERES）分别在上述交叉状态和上述条状态下以不同折射率不对称排列。 垂直定向耦合器开关还包括插入两个波导之间并且包括折射率的包层。 消光比增强部分的折射率由电流注入或电光效应独立控制。
-
公开(公告)号：KR1020030042119A
公开(公告)日：2003-05-28
申请号：KR1020010072641
申请日：2001-11-21
Applicant: 한국전자통신연구원
IPC: H04L12/28
CPC classification number: H04Q11/0066 , H04L47/10 , H04Q2011/0064
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，以通过执行突发数据到达顺序的调度来最小化突发数据丢失。 构成：接收包括输入突发数据的报头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）。 基于根据报头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）。 基于突发数据（43）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。 产生输出通道信息，以根据光开关的先前保留的激活结束时间与新突发数据的到达时间之间的差与光传输路径的传输通道的差，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）生成用于控制光交换结构的控制信息。
-
公开(公告)号：KR100384891B1
公开(公告)日：2003-05-22
申请号：KR1020000083274
申请日：2000-12-27
Applicant: 한국전자통신연구원
IPC: G02B6/35
Abstract: PURPOSE: A device for gain-clamped optical amplification of optical switching system is provided to deal with an optical power fluctuation due to a channel variation promptly in an optical switching system by using a controller for controlling at a high rate a laser diode which generates a pumping laser. CONSTITUTION: A tap coupler(310,311) divides an optical signal. An optical detector(320,321) converts the divided optical signal into an electric signal. A controller(360) controls an amplification gain of the electric signal. A laser diode(370,371) generates a pumping laser. An optical isolator(330,332) inputs the pumping laser signal into an EDF(Erbium Doped Fiber)(340,341). The EDF(340,341) amplifies the input optical signal. An ASE(amplified spontaneous emission) filter(350) filters the optical signal amplified in the EDF(340). An optical isolator(331) inputs the filtered optical signal into the EDF(341).
Abstract translation: 目的：提供一种用于光开关系统的增益钳位光放大的装置，以通过使用控制器以高速率控制激光二极管来处理光开关系统中由于沟道变化而引起的光功率波动，所述激光二极管产生 泵浦激光。 构成：分接耦合器（310,311）分割光信号。 光检测器（320,321）将分割后的光信号转换成电信号。 控制器（360）控制电信号的放大增益。 激光二极管（370,371）产生泵浦激光。 光隔离器（330,332）将泵浦激光信号输入到EDF（铒掺杂光纤）（340,341）中。 EDF（340,341）放大输入光信号。 ASE（放大的自发发射）滤波器（350）对在EDF（340）中放大的光信号进行滤波。 光隔离器（331）将滤波后的光信号输入到EDF（341）中。
-
公开(公告)号：KR100319780B1
公开(公告)日：2002-01-09
申请号：KR1019990000079
申请日：1999-01-05
IPC: G02B6/00
Abstract: 본발명은파장다중을이용하는광통신시스템혹은광 통신망에사용될수 있는파장변환기에관한것으로, 기존에알려진마이켈슨형파장변환기의문제점인한쪽팔에서의광 손실을보상하기위해싸냑간섭계를마이켈슨간섭계의한쪽팔에구성하여광섬유고리거울 (optical fiber loop mirror : OFLM)로동작시켜입력되는모든신호를다시반사시킴으로광신호의손실없이반도체광 증폭기의위상변화만일으키게함으로서신호의손실을적게하면서마이켈슨간섭계의동작으로파장변환이일어나게한다.
-
公开(公告)号：KR100310830B1
公开(公告)日：2001-12-17
申请号：KR1019980055811
申请日：1998-12-17
IPC: H04J14/02 , H04B10/2581
Abstract: 본 발명은 광대역 및 대용량의 광 패킷 스위치 구현에 있어서, 용량 증대시 단위 패킷 스위치 단위로 확장이 가능하고, 필요한 광 패킷 버퍼의 수도 최소로 할 수 있으며, 패킷 라우팅을 위한 다중 및 역다중도 용이하게 하고 대용량의 분산 시스템에서 안정된 동기 기능을 제공할 수 있는 자체 패킷 동기 방식을 이용한 대용량 WDM/OTDM 기반의 광 패킷 스위칭 장치를 제공하는데 그 목적이 있다.
본 발명에 따르면, 셀 다중부, 셀 역다중부 및 광 스위칭부(Optical Switching Fabric)를 포함하는 모듈 단위로 확장이 가능한 광 패킷 스위칭 시스템에 있어서, 입력되는 광 패킷 데이터에 대하여 파장 분할 다중화(WDM : Wave Division Multiplexing) 기법을 이용하여 패킷 집선 기능을 수행하는 광 패킷 분배 및 집선부와; 상기 광 패킷 분배 및 집선부에 의하여 집선된 광 패킷을 입력받아, 광 시간 분할 다중화(OTDM : Optical Time Division bit Multiplexing) 기법을 이용하여, 독립된 단위 패킷 스위칭 기능을 수행하는 광 패킷 스위칭부를 포함하여 이루어진 것을 특징으로 하는 광 패킷 스위칭 시스템이 제공된다.
-
-
-
-
-
-
-
-
-
Search Results
121
records
(took 0.033 seconds)
