Abstract:
본 발명은 광트랜스폰더가 필요없는 패킷-광 통합스위치에 관한 것으로, 이더넷의 패킷신호를 기설정된 출력포트로 출력하는 패킷 라인 카드(100); 상기 패킷 라인 카드(100)로부터의 패킷 신호를 상기 패킷 신호에 포함된 목적지 주소에 기설정된 출력 포트로 전달하는 패킷 스위치 패브릭(200); 상기 패킷 스위치 패브릭(200)으로부터의 패킷 신호를 기설정된 파장을 갖는 OTU2 광신호로 변환하는 10GbE/OTU2 통합 라인 카드(300); 및 상기 10GbE/OTU2 통합 라인 카드(13)로부터의 광신호를 기설정된 파장별로 기설정된 WDM 포트에 할당하여, 상기 광신호를 파장별로 각 포트로 교환하는 파장선택 스위치 패브릭(400)을 포함하고, 전술한 본 발명의 광트랜스폰더가 필요없는 패킷-광 통합스위치에서는, 상기 패킷 라인 카드(100), 패킷 스위치 패브릭(200), 10GbE/OTU2 통합 라인 카드(300) 및 파장선택 스위치 패브릭(400) 각각은 상기 동작의 역과정을 수행한다. 10GbE, XSBI, OTU2, SFI-4, 패킷 스위치, 광 스위치, 통합 스위치
Abstract:
본 발명은, 서로 다른 파장을 갖는 복수개의 광신호가 하나의 광 파이버를 통해 전송되는 광 전송 시스템에 있어서, 상기 광 파이버를 통해 전송된 복수개의 신호중 하나의 파장을 기준으로 파장 분산을 보상하는 제1 분산 보상기와, 상기 제1 분산 보상기에 연결되어 상기 제1 분산 보상기에서 출력되는 신호를 파장에 따라 각각 다른 채널로 분파하여 출력하는 디먹스, 및 상기 디먹스에서 분파된 채널 각각에 연결되어, 출력되는 서로 다른 파장 광신호 각각의 파장분산을 보상하는 복수개의 제2 분산 보상기를 포함하는 광 전송 시스템을 제공할 수 있다. 광전송(optical transmission), 분산보상(dispersion compensation), 분파기(demux)
Abstract:
PURPOSE: A message transport system based on a high availability multicast transport is provided to easily exchange an RMTP(Reliable Multicast Transport Protocol) by minimizing the dependability of the RMTP. CONSTITUTION: An API module(122) offers API application program related with a message transport. An RMT(Reliable Multicast Transport) module(126) performs reliable multicast transport. A message transmission management module(124) transports the message delivered from the application to the RMT module. If the message transporting is failed, the message transport module reports the failure to a sender.
Abstract:
PURPOSE: A method for processing a packet using PBR(policy based routing) is provided to implement IPv6 source address-based PBR using general memory. CONSTITUTION: A method for processing a packet comprises: a step of detecting basic normality of the packet in case of arriving of the packet to a packet delivery device(110); a step of searching PBR for the packet; a step of processing the packet based on the searched content(130,140) in case of the presence of searched contents; a step of extracting destination address from the packet in case of the absence of the searched contents; a step of searching a destination address-based routing table(150); and a step of processing the packet(160).
Abstract:
PURPOSE: A method for detecting DDos is provided to detect and defense DDos according to protocol and to reduce cost for managing. CONSTITUTION: A method for detecting DDos comprises: a step of collecting flow information of packets having IP address of an attack target system(310); a step of calculating PPS(packet per second) using packet number for one or more flows(330); a step of determining DDoS dealing method based on PPS and protocol for each flow(340); and a step of treating the flow.
Abstract:
PURPOSE: A multicast service providing method for supporting heterogenous network subscribers is provided to obtain the optimized multimedia stream to each access network. CONSTITUTION: A convergence gateway analyzes the received message. A convergence gateway confirms an identifying information for compartmentalizing the multimedia stream allocated to the access network. The convergence gateway requests the transmission of the multimedia stream corresponding to the identified identifying information to a server(S350,S360). The convergence gateway receives the multimedia stream corresponding to the identified identifying information from the server(S370,S380). The convergence gateway serves the multicast service to the access network requested(S390).
Abstract:
PURPOSE: A terminal mobility service method is provided to process the movement of the MN(Mobile Node) between the FA(Foreign Agents) even if the connection with a HA(Home Agent) is completed. CONSTITUTION: A FA(300) of the first external network processes the HA function of a terminal for the terminal moving to the second external network(41) after movement in the first external network(21). A FA(500) of the second external network receives the HA information of the terminal and FA information of the first external network from FA of the first external network. FA of the second external network accumulates and stores the received FA information of the first external network.
Abstract:
PURPOSE: A network based IP mobility system and a method per-flow handover method in the system thereof, which process per-flow hand over are provided to handover to a suitable access network by a service flow according to the change of the movement of the mobile terminal or the radio environment. CONSTITUTION: A wireless connection management part(630) is connected to a mobile access gateway through a binding serving the connection for the access network. A mobility management(620) supports the IP portability of the network base for the multimode mobile terminal through binding with the mobile access gateway connected through the wireless connection management part. The mobility management decides whether the hand over is available or not as per the communications flow by a multimode mobile terminal. In case the flow capable of hand over exists, the mobility management processes the hand over to the new access network for the corresponding flow.