Abstract:
물리 계층에서의 타임스탬핑 장치 및 그 방법이 개시된다. 본 발명의 일 실시예에 따른 타임스탬핑 장치는 물리 계층을 통해 시간 동기화 패킷을 식별하게 하는 마커를 삽입하거나 수신한 패킷의 마커를 제거하고 타임스탬프를 생성한다. 이에 의해 정확하고 정밀한 타임스탬핑이 가능하다. 시간 동기화, 타임스탬프, IEEE 1588, 물리 계층
Abstract:
PURPOSE: A time stamping apparatus at a physical layer and a method thereof are provided to offer time stamping having high accuracy through simple algorithm without amending network configuration, and to reduce delay, jitter, and uncertainties produced in a process of time stamping. CONSTITUTION: A first time stamping unit(10) products a time stamp after inserting a marker into a synchronizing packet at a physical layer based on a sequence ID of a time sync packet. A second time stamping unit(20) produces the time stamp after confirming the time sync packet through the marker of the packet which is received at the physical layer by receiving packet from the terminals connected to network.
Abstract:
PURPOSE: The time stamping having the time stamping processing unit using the signature information and the accuracy which method highs by reducing the uncertainty thing same like delay and jitter is offered. CONSTITUTION: The signature information generator(310) is created the signature information including the beginning index bit informing the beginning of the pseudo random number sequence, pseudo random number sequence, and the termination index bit informing the end of the pseudo random number sequence.
Abstract:
PURPOSE: An apparatus and a method for processing a timestamp using signature information in a physical layer are provided to improve accuracy by reducing a delay, jitter and uncertainness according to the performance of a timestamp in a physical layer. CONSTITUTION: A first timestamp processor(10) allocates signature information for indentifying a synchronization message to a transmitting message through a pseudo random number. A first timestamp processor verifies the signature information in a physical layer, and a second timestamp processor(20) verifies a pseudo random number of a message on the physical layer. Accordingly, the second timestamp processor discriminates whether or not the message is the synchronization message.
Abstract:
시그니처 정보를 이용한 물리계층에서의 타임스탬프 처리장치 및 그 방법이 개시된다. 본 발명의 일 실시예에 따른 타임스탬프 처리장치는 의사 난수열을 이용하여 타 단말로 송신할 메시지에 동기화 메시지임을 식별할 수 있는 시그니처 정보를 할당하고, 물리계층 상에서 시그니처 정보를 검증한다. 이에 의해 정확하고 정밀한 타임스탬프 처리가 가능하다. 시간 동기화, 타임스탬프, IEEE 1588, 물리계층, signature, PRBS, 기약다항식
Abstract:
A plurality of flows and flow information are received from servers and stored to transmit traffic, which is a flow, by a traffic transmission system linked with at least one server. A plurality of candidate light paths is generated to transmit the stored flows. Any one candidate light path among the generated candidate light paths is selected to be converted into a light path. Recourses are allocated to the remaining candidate light paths after the light path conversion process is completed, and the flows are transmitted through the candidate light paths with the allocated resources.
Abstract:
PURPOSE: An add-drop Benes network is provided to supply a network having high extensibility through an add-drop function. CONSTITUTION: An input connection terminal(220) connects an output signal of an input terminal(210), and an add connection terminal(230) connects the input of add ports corresponding to the number of input ports while connecting the output of the input connection terminal. A drop connection terminal(240) connects the output of the add connection terminal, and an output connection terminal(250) connects the some outputs of the drop connection terminal to an output side. An output terminal(260) outputs the output of the output terminal to the output port.
Abstract:
PURPOSE: A communications device including multiple interfaces capable of reducing the unnecessary electrical power waste of the communications device, a data packet transmission method thereof and an interface assigning method thereof are provided to minimize the use of interfaces having a large amount of energy consumption, thereby reducing the operation costs of a system. CONSTITUTION: All virtual interfaces are set up as in an idle state(S900). A switch senses the traffic inflow into a virtual interface(S902). The virtual interface in an active state is indexed(S904). The switch selects an arbitrary VLC(Virtual Lane Class) from a virtual interface set(S906). The presence of the virtual interface in the idle state is determined among the elements of the selected VLC(S908). The virtual interface in the idle state is changed into an active state(S910). The presence of the virtual interface in the idle state is determined by the neighbor VLC of the selected VLC(S912). A different VLC is selected(S914). The state of the virtual interface and the state of the virtual interface set are initialized(S916). [Reference numerals] (AA) Start; (BB,GG,II,KK) No; (CC,DD,HH,JJ) Yes; (EE) Initializing VL, VLC states; (FF) End; (S900) Setting up all interfaces in an idle state; (S902) Sensing traffic inflow?; (S904) Indexing virtual interface in an active state; (S906) Selecting an arbitrary VLC, i=1; (S908) Determining the presence of idle VL among the selected VLC elements?; (S910) Converting the indexed virtual interface into the idle VL in the VLC; (S912) Determining the presence of the idle VL in the neighbor VLC of the selected VLC; (S914) Selecting the arbitrary idle VLC
Abstract:
본 발명의 실시예에 따른 네트워크 장비의 트래픽 전송 방법은 복수의 플로우를 큐에 저장하는 제1 단계, 상기 큐에 저장된 플로우 중 트래픽 양이 가장 큰 제1 플로우가 소정 절차를 통하여 연결될 수 있는지를 판단하는 제2 단계, 상기 제1 플로우가 상기 소정 절차를 통하여 연결될 수 있는지에 따라, 상기 제1 플로우를 트래픽 그루밍하는 제1 절차 또는 상기 제1 플로우를 직접 연결하는 제2 절차를 선택하는 제3 단계, 그리고 선택한 절차에 따라 상기 제1 플로우를 연결하는 제4 단계를 포함한다.