Patent ID: 8879910
Filing Date: 2014-11-04
Classification: H04L,H04Q

Abstract:
1. An optical packet switching system comprising: an optical packet transmitter device including a detection unit configured to detect packet-length information and priority information from a received client signal, a setting unit configured to set, according to the degree of priority, a division factor by which the client signal is divided and a wavelength used for an optical packet signal to be transmitted, a header generation unit configured to generate a header containing destination information, the packet-length information, the priority information, and information of wavelength in use of the client signal, a transmission processing unit configured to divide the client signal according to the set division factor and generate a plurality of packet signals, a header insertion unit configured to insert the generated header in at least one packet signal, and an electrical/optical converter unit configured to convert the plurality of packet signals into optical packet signals of a plurality of wavelengths according to the set wavelength in use; and an optical packet switching device including a plurality of receiver units configured to receive wavelength-multiplexed optical packet signal in which the optical packet signals of a plurality of wavelengths are multiplexed, a branching unit configured to branch the received wavelength-multiplexed optical packet signals into optical packet signals of wavelengths with the header, an optical switch unit configured to route the wavelength-multiplexed optical packet signals, an analyzer unit configured to analyze the header of the branched optical packet signals so as to detect the destination information, the priority information, and the information of the wavelength in use, and an output competition determination unit configured to check for temporal competition of the plurality of wavelength-multiplexed optical packet signals input to the plurality of receiver units based on destination information, to check for competition regarding wavelengths of the plurality of wavelength-multiplexed optical packet signals input to the plurality of receiver units based on the information of wavelength in use, and to determine whether the optical packet signals should be transmitted or discarded based on the priority information when there is competition regarding time and wavelengths.