Patent ID: 9350482
Filing Date: 2016-05-24
CPC Classification: H04J,H04L

Claim Text:
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.