Overhead adjustment scheme for passive optical networks
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsEinar In De Betou, Stefan Dahlfort, Peter Ohlen
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Abstract
Embodiments of the present invention relate system and method for handling large dynamical signals in a passive optical network system and in particular for determining scheduling of bursts from a plurality of optical network units. More particularly, embodiments of the present invention relate to a system and method for determining a bit error ratio, i.e. BER in received communication data, determining, using the BER, optimized transmission scheduling of communication bursts from the optical network units, and providing a signal to the optical network units indicating the transmission scheduling of transmission bursts in accordance with the determined optimized transmission scheduling.
Claims12
An optical receiver (101, 400) in a passive optical network (100), comprising
- a processing unit (401);
- a memory unit (402);
- an optical communication interface (403);
- wherein the processing unit is arranged to execute instruction sets stored in the memory unit, to receive communication data on the optical communication interface from a plurality of optical network units (102, 103, 104), and wherein the processing unit is further arranged to:
- determine a bit error ratio, i.e. BER in received communication data;
- determine, using the BER, optimized transmission scheduling of communication bursts from the optical network units;
- and
- provide a signal to the optical network units indicating the transmission scheduling of transmission bursts in accordance with the determined optimized transmission scheduling.
A method in an optical line termination device (101) in a passive optical network (100), for controlling transmission bursts from a plurality of optical network units (102, 103, 104), comprising the steps of:
- receiving communication data from the optical network units;
- determining bit error ratio of the received communication data;
- determining, using the bit error ratio, optimized transmission scheduling of communication burst from optical network units;
- and
- providing a control signal to the optical network units indicating scheduling parameters of transmission burst from the optical network units in accordance with the optimized transmission scheduling.
An optical transmitter (102, 103, 104, 500) in a passive optical network (100), comprising a processing unit (501), a memory unit (502), and at least one optical communication interface (503), wherein the processing unit is arranged to operate instruction sets stored in the memory unit for receiving burst control information, based on bit error ratio measurements, from an optical line termination, i.e. OLT, (101) and transmitting communication burst in accordance with the burst control information.
A computer program stored in a computer readable storage medium, for controlling, in an optical line termination unit (101, 400), communication bursts from a plurality of optical network units (102, 103, 104, 500) in a passive optical network, the computer program comprising instruction sets for:
- receiving communication data from the optical network units;
- determining bit error ratio of the received communication data;
- determining, using the bit error ratio, optimized transmission scheduling of communication burst from the optical network units;
- and
- providing a control signal to the optical network units indicating scheduling of transmission burst from the optical network units in accordance with the optimized transmission scheduling.
Dependencies are inferred from the claim text.