Abstract:
본 발명은, 트래픽이 집중되는 MPP, 및 MPP와 직접 연결되는 MP 사이를 프레임 충돌이 많고 혼잡도가 높은 경쟁 방식 대신, 무경쟁 구간으로 설정함으로써 MPP에 대한 트래픽 집중현상을 최소화하는 무선 네트워크의 병목현상 처리방법에 대한 것이다. 이를 위해, 본 발명은 MPP(Mesh Portal)과 직접 접속되는 제1MP(Mesh Point)에 무경쟁 채널 구간을 할당하는 단계, 및 MPP와 간접 접속되는 제2MP(Mesh Point)에 경쟁 채널 구간을 할당하는 단계를 포함한다. 802.11s, PCF, DCF, MPP, MP
Abstract:
PURPOSE: A method for providing terminal mobility in a packet transmission network, a packet transmission network system, and a gateway switch are provided to set up and manage a tunnel through the gateway switch. CONSTITUTION: A plurality of access switches(111 or 113,121,122,131 or 132,141,142) is composed in a plurality of PTANs(Packet Transport Access Networks) connected to PTCN(Packet Transport Core Network). A plurality of access switches transceives packet with an arbitrary terminal. A plurality of gateway switchs(101 or 104) is composed in a plurality of PTANs. A plurality of gateway switches is connected to the PTCN. A plurality of gateway switches transceives packet with the arbitrary terminal through an arbitrary access switch.
Abstract:
PURPOSE: A device for recognizing a virtual lane for applying virtual lane scheme to an optical network and a method thereof are provided to recognize and sort the virtual lane in a receiver by using MFAS(Mulit-Frame Alignment Signal) signal without modifying the standard frame of super high-speed OTUk. CONSTITUTION: A framer(710) takes charge of frame formation of an optical transport network signal and processing of an optical transport network signal. A frame decomposition device(720) decomposes frame to the fixed size to comprise the FAS(Frame Alignment Signal) and MFAS(Multi-Frame Alignment Signal) which will be transmitted into one block. While the rotation direction of the virtual lane is changed periodically, a lane recognizing rotation device(730) distributes a disassembled frame block to a plurality of virtual lanes as a round-robin mode.
Abstract:
PURPOSE: A layer 2/layer 3(L2/L3) packet processing unit and a method of the same are provided to improve the processing speed and the performance of a packet in a multimedia application. CONSTITUTION: An L3 heater is analyzed in a packet which passes through a header pre-processing unit(210) and generates an internet protocol(IP) flow(230). In order to map the packet which is input from a provider bridges network(PBN) or an internet protocol network(IPN) with the L2 format of a provider backbone bridges network(PBBN), a packet extension unit(240) extends a frame. A packet compressor unit(250) rearranges the packet which passes through the packet extension unit. The packet compressor unit merges the packet.
Abstract:
PURPOSE: A routing method for offering a different path for each service and a device thereof are provided to construct topology according to various services by using one router. CONSTITUTION: A service identification module(110) decides a service ID representing a service which packet requests by using a header within the packet. A plural service forwarding tables(130) stores a different next hop for each service such as a voice call, VoIP(Voice over Internet Protocol), VOD(Video on Demand) and IPTV(Internet Protocol Television) etc. A hop search module(120) decides a next hop of the packet by searching a service forwarding table corresponding to the service ID in a plurality of service forwarding tables.
Abstract:
본 발명은 네트워크 시스템에서의 제어 기능 다중화 장치 및 방법에 관한 것으로, 선택된 어느 하나의 라인카드에 대해 제어 기능 설정이 가능한 다수의 라인카드 및 IPC 통신을 위해 다수의 라인카드 간 IPC 메시지를 전달하는 내부 스위치를 포함한다. 본 발명에 따르면, 다수의 라인카드로 구성된 네트워크 시스템에서 다수의 라인카드 중 선택된 어느 하나를 제어카드로 변경 설정하는 것이 가능하도록 함으로써, 시스템 내의 라인카드의 제어기능을 다중화하여 보다 안정적인 시스템을 유지할 수 있는 이점이 있다. 라인카드, 제어카드, 스위치, 라우터, 다중화
Abstract:
PURPOSE: A method for processing a wireless network bottleneck phenomenon in a wireless network are provided to prevent the increase of traffic and bottleneck phenomenon between MPs(Mesh Points) that directly contact an MPP(Mesh Portal) according as the number of user terminals are increased. CONSTITUTION: Contention-free channel interval is allocated to first MPs(51,52) contacting an MPP(100), and the MPP broadcasts a beacon frame to the first MPs. Contention channel interval is allocated to second MPs that indirectly contact the MPP. The contention-free channel interval is the interval in which data transmission and reception are process according to a PCF(Point Coordination Function), and the contention channel interval is the interval in which data transmission and reception are process according to the DCF(Distributed Coordination Function).
Abstract:
이더넷 기반의 APS 프로세스의 동작시험장치 및 방법이 개시된다. APS 프로세스의 동작시험장치 및 방법은 제1노드에 이더넷 네트워크로 연결된 제2노드로부터 수신한 상대방요청신호 중에서 제1노드의 APS 프로세스의 동작 시험을 명령하는 시험명령신호 및 제2노드의 APS 프로세스의 동작이 정상임을 나타내는 제2시험응답신호를 필터링하고, 상대방요청신호가 시험명령신호인 경우에는 제1노드의 APS 프로세스의 동작이 정상임을 나타내는 제1시험응답신호를 생성하고, 생성된 제1시험응답신호 및 제1노드의 APS 프로세스의 상태를 나타내는 적어도 하나 이상의 국부요청신호들의 우선순위에 따라 최우선국부요청신호를 선정하여, 최우선국부요청신호와 필터링된 상대방요청신호의 우선순위에 따라 제2노드에 전송할 출력신호를 결정한다. 본 발명에 따르면, ITU-T 권고안 G.8031에서 규정한 APS 프로세스의 동작 상태 시험 기능을 구현하고, 상대방 노드로부터 동작 상태 시험 요청을 수신한 경우에 APS 프로세스에 대한 복잡한 진단과정을 거치지 않고도 효율적으로 APS 프로세스를 시험할 수 있다. APS(Automatic Protection Switching), EXER(Exercise) 신호, RR(Reverse Requset) 신호, DNR(Do Not Revert) 신호, NR(No Request) 신호
Abstract:
PURPOSE: A force protection switching method in an Ethernet ring network is provided to maintain a service which is being provided in case an operator temporarily blocks a specific link for maintenance and repair. CONSTITUTION: A force protection switching method in an Ethernet ring network comprises the following steps of: receiving a force switching command(S300); blocking the port of a corresponding link(S310); transmitting a force switching message for showing that the Ethernet ring network is in the force switching state(S320); and flushing a filtering database(S330).
Abstract:
PURPOSE: A compulsory protection switching method in an Ethernet ring network is provided to offer the flexibility of network operation by enable an operator to temporarily and forcibly block a specific link which is released. CONSTITUTION: When an operator sends a force switch command to a specific node to temporarily exclude other links or nodes except for RPL in a traffic transmission section(S350), the specific node blocks a port which is unblocked. An RPL owner unblocks the blocked port.