Patent ID: 9197353
Filing Date: 2015-11-24
Classification: H04J

Abstract:
1. An optical line termination, comprising: a wavelength splitter configured to split upstream optical signals with different wavelengths, received from a plurality of optical network units, according to wavelength; at least one receiver configured to receive the optical signals split by the wavelength splitter according to wavelength; a wavelength selector configured to allocate an upstream transmission wavelength of the optical network units, wherein the wavelength selector calculates a value of a transmission distance to an optical network unit to which an upstream transmission wavelength is to be allocated, compares the calculated value with values of existing transmission distances of the optical network units according to upstream transmission wavelength to obtain differences between the calculated value and the value of existing transmission distances, and selects an upstream transmission wavelength for which the comparison yields a smallest difference; and a transmitter configured to transmit wavelength allocation information allocated by the wavelength selector to the optical network units.