摘要:
Provided are a method and apparatus for transmitting error information between an Ethernet network and a synchronous digital hierarchy (SDH) network. According to the present invention, when an error occurs in the Ethernet network or the SDH network, OAM information is transferred to the opposite network by using a conventional MAC control frame from a linked part of the Ethernet network and the SDH network and thus the EoS network may be efficiently operated and managed. Also, by using standardized MAC control frame, the present invention may be applied to an existing system without additionally changing hardware or defining a new OAM frame.
摘要:
Provided is a quality of service (QoS) management method in an Ethernet-based next generation network (NGN) including a plurality of Ethernet virtual connections (EVCs). A bandwidth is allocated to each of a plurality of frames based on classes of service (CoSs), physical ports, service types, and Layer 2 (L2)/Layer 3 (L3) information.
摘要:
There is provided a source node apparatus including: a Bandwidth Resize (BWR) generator configured to insert an InRP signal and an InTSCC signal into OPUflex Resize Control Overhead (RCOH) and to transmit the resultant OPUflex RCOH; and a BWR relay generator configured to insert an Resizing Protocol indicator (RP) signal and a Tributary Slot Connectivity Check (TSCC) signal into higher order OPUk RCOH with reference to the InRP signal and the InTSCC signal included in the OPUflex RCOH transmitted by the BWR generator, and transmit the resultant higher order OPUk RCOH.
摘要:
The present invention is to provide an automatic gain-controlled optical fiber amplifier, comprising: a first optical branch for branching a portion of an optical signal inputted into the optical fiber amplifier; a second optical branch for branching a portion of an optical signal outputted from the optical fiber amplifier; an optical distributor for receiving the optical signal of an input side branched partially by the first optical branch and for outputting it separately; a first wavelength selector for receiving the optical signal of a one side distributed by the optical distributor and for selecting a predetermined wavelength optical signal; a second wavelength selector for receiving the optical signal of an output side branched partially by the second optical branch and for selecting the predetermined wavelength optical signal; a signal processor for receiving the optical signal of a second side distributed by the optical distributor and the predetermined wavelength optical signal selected by the first and second optical wavelength selector and for measuring a total power of an input signal and a number of input channels; and a controller for generating a control signal according to the total power of the input signal and the number of input channels measured by the signal processor.
摘要:
A transmission apparatus and method for serial and parallel channel interworking in an optical transport network are provided. The transmission apparatus for serial and parallel channel interworking ensures interworking between parallel optical modules or between parallel and serial optical modules, regardless of a protocol, without having to add logics or with only a minimum number of logics, in order to manufacture a small-size optical module with low power consumption.
摘要:
The optical performance monitoring apparatus includes a first optical distributor for distributing a WDM optical signal branched from an optical transmission line, a plurality of wavelength selectors, each for selecting a predetermined wavelength optical signal from the optical signal distributed, a plurality of first optical detectors, each for detecting power of the predetermined wavelength optical signal for a corresponding one of channels selected by the wavelength selectors; and a signal processor for measuring the power for each channel of the WDM optical signal, a total ASE noise power, and an optical signal-to-noise ratio for each channel from the digital value.