OPTICAL DELAY LINE AND ELECTRONIC BUFFER MERGED-TYPE OPTICAL PACKET BUFFER CONTROL DEVICE

摘要

[Problem] To provide an optical packet buffer control device, without making device construction large in scale, that is capable of dynamically responding to traffic and suppressing power consumption.;[Solution] An optical delay line and electronic buffer merged-type optical packet buffer control device having N number of input terminals (11), an optical packet information acquisition unit (13), a plurality of switches (15), a plurality of delay lines (17), an electronic buffer (19), an output terminal (21), and a buffer control unit (23), wherein the buffer control unit (23) receives packet information and analyzes packet traffic, and exerts control so as not to use the electronic buffer (19) when the packet traffic is equal to or less than a first threshold, or receives information pertaining to the use state of the delay lines and exerts control so as not to use the electronic buffer (19) when the use rate of the delay lines (the percentage of the number of used delay lines relative to the total number of delay lines) is equal to or less than a first threshold pertaining to the use rate. This device can expand capacity by utilizing the electronic buffer at the time of congestion, and can dynamically respond to changes in traffic.

主权项

1. An optical delay line and an electronic buffer merged-type optical packet buffer control device comprising:
N (N is integer number of 2 or larger) input terminals (11) in which an optical packet is input; an optical packet information acquisition unit (13) connected to the N input terminals (11) and that acquires packet information related to the optical packet; a plurality of switches (15) connected to the N input terminals (11); a plurality of delay lines (17) respectively connected to the plurality of switches (15); an electronic buffer (19) connected to the N input terminals (11); an output terminal (21) connected to the plurality of delay lines (17) and the electronic buffer (19); and an optical buffer control unit (23) connected to the optical packet information acquisition unit (13) and that controls a connection relationship between the N input terminals (11) and the plurality of switches (15), a connection relationship between the N input terminals (11) and the electronic buffer (19), and a connection relationship between the plurality of switches (15) and the plurality of delay lines (17), wherein amounts of delay of the plurality of delay lines (17) are different from each other, and the buffer control unit (23) receives the packet information, analyzes packet traffic, and performs control in such a manner that the electronic buffer (19) is not used in a case where the packet traffic is a first threshold related to traffic or less or in a case where a use rate of the delay lines is a first threshold related to a use rate or lower.