Method and system for power management control in passive optical networks

A program storage device readable by machine, tangibly embodying a program of instructions executable by the machine to perform a method for power management control in a passive optical network (PON), the method comprising:

• during a ranging window in a set-up mode operation of the PON, acquiring by an optical line terminal (OLT) a respective reception level for each optical network unit (ONU) in the PON;
• maintaining in the OLT a reception table that stores the respective reception level for each ONU;
• and
• at a normal mode operation of the PON and prior to receiving a burst signal from an ONU, setting a reception threshold of an optical receiver at the OLT with the reception level of the ONU, wherein the reception threshold is set to the reception level retrieved from the reception table using an identification (ID) number of the ONU.

An optical line terminal (OLT) controller for power management control in a passive optical network (PON), said OLT comprising:

• a power management controller for setting a reception threshold of an optical I receiver with a reception level acquired for an optical network unit (ONU), at normal mode operation of the PON and prior to receiving a burst signal from the ONU;
• and
• a memory for storing a reception table that maintains the respective reception level for each of the ONUs using an identification (ID) number of the ONU,
• wherein, the reception level of the ONU is acquired during a ranging window in a set-up mode operation of the PON.