摘要:
A method for reducing power consumption in an Ethernet switch is provided. The method includes: checking a state of packet data input through each of connection ports; detecting a connection port which has a packet rate lower than a predetermined reference value based on a result of the checking; and generating a data transfer control frame with respect to the connection port having the low packet rate and transmitting the generated data transfer control frame to an Ethernet apparatus connected to the corresponding connection port. Accordingly, a transmission line between the Ethernet switch and an Ethernet apparatus having the low to transmission rate is maintained in a low-power state, thereby reducing energy consumption in both Ethernet apparatuses.
摘要:
A transmitting apparatus in a transport network performs forward error correcting encoding for each virtual lane set as a multiple of the transmission channels, to generate virtual frames including independent parity bytes for each virtual lane. The generated virtual frames are transmitted through at least one transmission channel. In addition, a receiving apparatus detects the virtual frames for each virtual lane from a signal received through a transmission channel by using a frame assignment sequence, and performs forward error correcting decoding by using the parity bytes included in the virtual frames detected for each virtual lane.
摘要:
Provided is an apparatus for matching Gigabit Ethernet (GbE) signals to an Optical Transport Hierarchy (OTH). The apparatus real-time records a source address and input port information of GbE Ethernet frames in a memory, compares a destination address of the Ethernet frame which is a payload of a GFP frame with memory table information, searches an output port location of the GbE, and interreceives GbE frames and Generic Frame Procedure (GFP) frames by multiplexing/demultiplexing.
摘要:
Disclosed area method and apparatus of transporting client signals and a method and apparatus of mapping or demapping tributary slots for transport of client signals. The client signal transporting apparatus defines a bit rate of an optical transport signal, and bit-transparently maps and multiplexes client signals that operate at the defined bit rate. Also, the client signal transporting apparatus adjusts a bandwidth by extending a mapping area to increase a data capacity to be allocated to tributary slots.
摘要:
An optical communication system is provided. In particular, multi-lane signal transmitting and receiving apparatuses capable of transmitting and receiving a multi-lane signal using the same inverse multiplexing scheme even when optic modules having several transport lane numbers are selected according to a purpose of use are provided. Each OTUk capable of containing a client signal in a transport hierarchy signal (OTUk-Xv) is defined as a virtual container, and Y virtual lanes are allocated to respective virtual containers X, in which identification information for the allocated virtual lanes is inserted into an overhead area and a transport hierarchy multi-lane signal is transmitted in the form of OTUk-XvYd. A receiving stage extracts the identification information inserted into the overhead area of the transport hierarchy signal in the form of OTUk-XvYd, compensates for a skew of the received signals, and aligns virtual lane signals for each virtual container to restore an OTUk-Xv signal that is an original transport hierarchy signal.
摘要:
Provided are an equalization apparatus and method of compensating a distorted received signal. The equalization apparatus includes: a filter unit removing inter-symbol interference (ISI) from a multi-channel signal that is received; and a zero-offset controller identifying a zero offset of the multi-channel signal and determining operating coefficients of the filter unit by reflecting the identified zero offset. A response filter, which reduces loss and noise, can be used, and the structure of the response filter can be simplified. In addition, channel characteristics are estimated in real time at an initial stage of data transmission and reception. Thus, an equalizer optimized for channel interference characteristics can be provided.
摘要:
Provided are a time-division data multiplexing/demultiplexing system and method capable of preventing errors in processing data signals which occur due to a phase difference between data signals and a multiplexing reference clock in a multiplexing process or a phase difference between a multiplexed data signal and a demultiplexing reference clock in a demultiplexing process. The time-division data multiplexing system includes: a phase adjusting unit which adjusts a phase of each of a plurality of data signals having different phases from one another for enabling the data signals to be time-division multiplexed when a plurality of values of the data signals indicate a stable state; and a multiplexer time-division multiplexing the phase adjusted data signals according to a multiplexing reference clock.
摘要:
Provided are an integrated dielectric resonator filter and a clock extraction device using the integrated dielectric resonator filter. The integrated dielectric resonator filter includes: a microwave substrate; a disc type dielectric resonator installed on the microwave substrate and having predetermined diameter and height; an input and output transmission line installed on both sides of the disc type dielectric resonator to transmit input and output signals; and a metal cover enclosing the disc type dielectric resonator to form a predetermined volume, opened toward the input and output transmission line, and closed in an orthogonal direction to the input and output transmission line.
摘要:
A multi-channel data verifying apparatus and method are provided. The apparatus includes a receiver receiving N data channels and a deskew channel generated by sequentially extracting a predetermined data bit from the each of N data channels, and a deskew channel error detector detecting whether the deskew channel received by the receiver corresponds to an expected deskew channel generated and stored based on the test signal or generated based on the previously received deskew channel. Accordingly, data channels, a deskew channel and the entire data capacity can be verified and thus the cause of a problem in the transmission and reception of multi-channel data can be identified in advance.
摘要:
Disclosed is a device and method for optical supervisory channel framing in an optical transport network system including at least one of an optical transmission section, an optical multiplex section, and an optical channel section. A maintenance signal is generated according to a first LOS (Loss OF Signal) signal generated from at least one of the optical transmission section, the optical multiplex section, and the optical channel section. The maintenance signal and a frame-related channel such as a message communication channel are multiplexed to generate an optical supervisory channel frame. The optical supervisory channel frame is output to another device including a repeater and a terminal system through a single supervisory channel.
摘要翻译:公开了一种光传输网络系统中的光监控信道成帧的装置和方法,包括光传输部分,光复用部分和光信道部分中的至少一个。 根据从光传输部分,光复用部分和光通道部分中的至少一个产生的第一LOS(Loss Of Signal)信号产生维护信号。 维护信号和诸如消息通信信道的帧相关信道被多路复用以产生光监控信道帧。 光监控信道帧通过单个监控信道输出到包括中继器和终端系统的另一设备。