Patent ID: 9698900
Date: 2017-07-04
CPC Classifications: H04B,H04J

Claim:
1. A method for controlling an optical network unit in a passive optical network system, comprising: performing, by an optical transceiver of the optical network unit, a wavelength change of an optical signal in response to a wavelength setting command transferred from a media access control (MAC) unit; generating, by the optical transceiver, a wavelength threshold alarm in response to a wavelength change and transferring the generated wavelength threshold alarm to the MAC unit; determining, by the MAC unit ,a wavelength malfunction based on the wavelength threshold alarm and a wavelength setting history, the wavelength setting history being history information associated with generating and transmitting the wavelength setting command; and when the wavelength malfunction occurs, the MAC unit blocks an uplink optical transmission of the optical transceiver.