Wavelength and bandwidth allocation method

摘要

A wavelength and bandwidth allocation method which includes in order: a wavelength allocation step of allocating each wavelength of an uplink signal to each ONU so that the sum of target bandwidths each allocated as a target to each of the ONUs to which each wavelength of the uplink signal is allocated does not exceed a bandwidth allocated to each wavelength of the uplink signal; and a bandwidth allocation step of allocating a bandwidth to each of the ONUs based on any one of a plurality of requested bandwidths accepted from each of the ONUs in each wavelength of the uplink signal so that the bandwidth actually allocated to each of the ONUs converges to the target bandwidth allocated as a target to each of the ONUs.

主权项

1. A wavelength and bandwidth allocation method, which is carried out by one optical line terminal (OLT) in a passive optical communication network in which a plurality of optical network units (ONUs) are connected to the OLT, each of the ONUs transmits an uplink signal of any one of a plurality of previously provided wavelengths to the OLT, and the OLT receives the uplink signals of all the previously provided wavelengths from each of the ONUs, the method comprising:
a target bandwidth calculation step of distributing all bandwidths of the previously provided wavelengths to each of the ONUs as a reference bandwidth based on a subscription service class to which each of the ONUs subscribes, and calculating a target bandwidth for each of the ONUs based on the reference bandwidth distributed to each of the ONUs; a wavelength allocation step of allocating each of the wavelengths of the uplink signal to each of the ONUs so that a bandwidth allocated to each of the wavelengths of the uplink signal is larger than or equal to a sum of the target bandwidths for each of the ONUs to which each of the wavelengths of the uplink signal is allocated; and a bandwidth allocation step of, in each of the wavelengths of the uplink signal, allocating an actual bandwidth to each of the ONUs based on any one of a plurality of requested bandwidths accepted from each of the ONUs so that the actual bandwidth for each of the ONUs converges to the target bandwidth for each of the ONUs.