| 摘要 |
A communication device which communicates with a plurality of subscriber communication devices using optical signals of a plurality of wavelengths, includes: a traffic monitoring section for monitoring a downstream traffic volume of a downstream signal destined for each of the plurality of subscriber communication devices; and a resource allocating section for allocating a different one of a predetermined number of wavelength resources to each of groups which includes at least one downstream signal grouped according to a predetermined wavelength allocation rule based on its downstream traffic volume.
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