Abstract:
An optical communication apparatus is mounted to a first node among a plurality of nodes in a linear multicast network where the nodes are connected to each other linearly. The optical communication apparatus includes: a first extraction passage module which extracts at least a portion of a first operating signal, and passes a signal to retransmit in the first operating signal; a second extraction passage module which extracts at least a portion of an inputted first preliminary signal, and passes a signal to retransmit in the first preliminary signal; and a first optical switch which selects one of the first and second extraction passage modules, and outputs a signal extracted by the selected extraction passage module, wherein the first operating signal and the first preliminary signal are signals that are separated and transmitted from a second node adjacent to the first node.
Abstract:
An apparatus and a method for optical communication are disclosed. The optical communication apparatus mounted to a first node in a linear network connected through an optical transmission path between a plurality of nodes comprises: a multiplexer which receives a plurality of optical signals having different wavelengths from each other, and outputs a first multi-wavelength signal wherein the plurality of optical signals are coupled; and a first optical coupler which separates the first multi-wavelength signal into multi-wavelength signals to be transmitted to two or more neighboring nodes different from each other.
Abstract:
본 발명의 일실시예에 따른 패킷/TDM 겸용 스위치는 이더넷 정합 수단 또는 TDM(Time Division Multiplexing) 정합 수단으로부터 수신한 슬롯 인식 정보에 기초하여 수신한 신호의 종류를 구분하고, 상기 수신한 신호의 종류에 따라 상기 이더넷 정합 수단 또는 상기 TDM 정합 수단 각각에 대응하는 전용 스위치를 이용하여 상기 수신한 신호를 처리한다.
Abstract:
PURPOSE: A wavelength multicasting method in the multiple-ring network, a multiple-ring network apparatus, and a node of the multiple-ring network are provided to implement the wavelength multicasting in the multiple-ring network node by separating a signal by using a simple separation/coupling device. CONSTITUTION: Each node (101) of each ring network system comprises a channel extracting/passing module (102), a multiplexer (103), an optical coupler (104), and a band cutoff filter (105). An optical amplifier (106) is equipped between the nodes. Among each node, the node, which is used in the signal exchange with other ring networks, is coupled by extracting and inserting an optical signal by using the optical separator and optical coupler. Each of a single ring network is able to extract the optical signal, which came from other ring network, and the signal, which is inserted from the single ring network. The extracted signal is outputted by separating into the band, channel, or the whole signal. The band cutoff filter prevents the interference with the optical channel, which is sent from own node, by separating own signal after transmitting to the adjacent node.
Abstract:
본 발명은 다 계층 네트워크의 관리 시스템 및 그 자원관리방법에 관한 것으로, 상위 계층에서 필요로 하는 경로를 동적으로 생성하고 관리함으로써 네트워크 자원, 및 전송 경로를 효율적으로 관리할 수 있는, 다 계층 전송망의 FA-LSP(Forwarding Adjacent-Label Switching Path)에 대한 계층 간 TE 링크 자원관리 방법에 대한 것이다. FA-LSP, TE 링크, 다 계층 전송망, 경로, 계층간 호, Inter-layer call flag
Abstract:
PURPOSE: A resource management method between multi-layered networks is provided to embody transmission path management and network resource management about the multi-layer transmission resources. CONSTITUTION: A node1(5), a node 2 and a node 3 proceed switching and control to an upper layer(3), a middle layer(2) and a lower layer(1) about their resources. A node 4(6) performs switching and control about resources of the middle layer and the lower layer. A node 5(7) performs switching and controlling resources of the lower layer. Each node forms TE(Traffic Engineering) link resources(8,9,10) connected to the adjacent node. Each node offers a service transmission path through the link resource.
Abstract:
An apparatus for switching an OTH(Optical Transport Hierarchy) signal frame in an ATCA platform is provided to switch a large switching capacity and provide a multicast and ADM(Add and Drop Multiplexer) function to provide the same function as that of an existing SDH switch. A processor unit(200) is connected with a fabric interface unit of an ATCA(Advanced Telecom Computing Architecture) platform and controls ODU data received through an input port. An ethernet controller controls ethernet communication to the fabric interface unit. A cross point switch unit(220) is connected with a line card, an input/output unit of the ATCA platform, to cross-switch a 2.5Gbps signal between node slots. A chip set driver signal generating and controlling unit(230) is implemented as a circuit configuration for a control signal required for each function part for implementing an OTH unit switch, an address decoding logic for a bus with the processor unit, and a circuit of a processor bus converter for a processor connection unit of a switch element. A back board connection unit(240) uses a double star structure based on a switch slot including the fabric interface unit, and connects a management channel for managing each line card slot to a base channel to interface the 2.5Gbps signal. A duplex function part(250) interchangeably mounts/dismounts two switch units in the ATCA platform, performs switching on the switch units due to a failure, and generates a control signal to allow each line unit to select one of two received signals.
Abstract:
본 발명은 광 트랜스폰더를 구성하는 STM-64/OC-192 신호 및 OTU2 신호 접속 트랜시버(Optical Transceiver)에서 제공하는 여러 동작 클럭을 참조하여 광 트랜시버의 동작을 테스트하는 장치에 관한 것이다. 본 명세서에서 개시하는 광 트랜시버의 동작 테스트 장치는 STM-64/OC-192 또는 OTN 접속 광 트랜시버가 제공하는 여러 송수신 기준 클럭 중 하나의 송수신 기준 클럭으로 선별하는 송수신 기준 클럭 선별부; 상기 트랜시버가 제공하는 수신 데이터 동기 클럭과 상기 선별된 송수신 기준 클럭 중 어느 하나를 송신 테스트 기준 클럭으로 선별하는 송신 테스트 기준 클럭 선별 스위치; 및 상기 트랜시버가 제공하는 송신 감시 클럭과 상기 선별된 송수신 기준 클럭 중 어느 하나를 수신 테스트 기준 클럭으로 선별하는 수신 테스트 기준 클럭 선별 스위치를 포함하여 본 발명의 목적 및 기술적 과제를 달성한다.