US 2015/0318928 A1 · METHOD AND SYSTEM FOR DETERMINING AND CONTROLLING POWER OF OPTICAL TRANSMITTER OF OPTICAL NETWORK UNIT FOR TIME AND WAVELENGTH DIVISION MULTIPLEXING PASSIVE OPTICAL NETWORK

Abstract

Disclosed are a method and system for determining and controlling power of an optical transmitter of an optical network unit (ONU) for a time and wavelength division multiplexing passive optical network (TWDM-PON). The system includes an RSSI collector configured to collect received signal strength indication (RSSI) information from upstream optical signals received from the ONUs connected to optical line terminal (OLT) ports, an ONU power level determiner configured to gather the pieces of RSSI information about the ONUs from the RSSI collector, and to determine power of optical transmitters of the ONUs based on the gathered information, and a power mode controller configured to receive power mode setting information of the optical transmitters of the ONUs from the ONU power level determiner, and to generate a physical layer operation and maintenance (PLOAM) message to control power modes of the ONUs based on the received power mode setting information.

Claims18

Dependent claims

A system for determining and controlling power of an optical transmitter of an optical network unit (ONU) provided for a time and wavelength division multiplexing passive optical network (TWDM-PON) system, the system comprising:

an RSSI collector configured to collect received signal strength indication (RSSI) information from upstream optical signals received from the ONUs connected to optical line terminal (OLT) ports;
an ONU power level determiner configured to gather the pieces of RSSI information about the ONUs from the RSSI collector, and to determine power of optical transmitters of the ONUs based on the gathered information;
and
a power mode controller configured to receive power mode setting information of the optical transmitters of the ONUs from the ONU power level determiner, and to generate a physical layer operation and maintenance (PLOAM) message to control power modes of the ONUs based on the received power mode setting information.

1 more element

A method of determining and controlling power of an optical transmitter of an optical network unit (ONU) provided for a time and wavelength division multiplexing passive optical network (TWDM-PON) system, the method comprising:

collecting received signal strength indication (RSSI) information from upstream optical signals received from the ONUs connected to optical line terminal (OLT) ports;
gathering the pieces of RSSI information about the ONUs from the OLT ports, and determining power of optical transmitters of the ONUs based on the gathered information;
transmitting determined power mode setting information of the optical transmitters of the ONUs to the OLT ports;
and
generating a physical layer operation and maintenance (PLOAM) message which contains directed or broadcast ONU-ID, power mode control information in a specific power mode or attenuation level, to control power modes of the ONUs based on the power mode setting information of the optical transmitter, and transmitting the PLOAM message to the ONUs from the OLT ports.

2 more elements

Dependencies are inferred from the claim text.

Method and system for determining and controlling power of optical transmitter of optical network unit for time and wavelength division multiplexing passive optical network

Life of this patent

Method and system for determining and controlling power of optical transmitter of optical network unit for time and wavelength division multiplexing passive optical network

Life of this patent

Abstract

Claims18