Burst data reception method and apparatus in EPON
AssigneeElectronics and Telecommunications Research Institute
InventorsHyun Kyun Choi, Yool Kwon, Bong Tae Kim
Life of this patent
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Abstract
A method and apparatus for receiving burst data in an OLT of an EPON are provided. The method includes the steps of: a) receiving burst data from the plurality of ONUs; b) generating a multipoint control protocol (MPCP) LOS signal for reducing a synch time of the burst data; c) reducing the synch time in response to generation of the MPCP LOS signal; and d) recovering the received burst data by performing a code-group sort in a period where the MPCP LOS signal is not generated.
Claims10
A method for processing burst data received from a plurality of optical network units (ONU) at an optical line terminal (OLT) in an Ethernet passive optical access network (EPON) formed of the OLT and the plurality of ONUs, comprising:
- receiving burst data from the plurality of ONUs;
- obtaining, using an OLT multipoint control protocol (MPCP), a burst data receiving time, the burst data receiving time being a time at which burst data is to be received by the OLT;
- generating an MPCP loss of signal (LOS) signal, which signifies a period without a burst data optical signal, for reducing a synch time of the burst data received at the OLT, the synch time being a set time during which the OLT recovers data from a burst data signal received at the OLT, and the MPCP LOS signal being generated according to the obtained burst data receiving time;
- reducing the synch time in accordance with generation of the MPCP LOS signal;
- and
- recovering the received burst data by performing a code-group sort in a period where the MPCP LOS signal is not generated.
An apparatus for processing a burst data in an Ethernet passive optical network, comprising:
- an optical module for receiving burst data of different optical power levels from a plurality of optical network units (ONU) and converting an optical signal of the burst data to an electric signal;
- an access controller generating a multipoint control protocol (MPCP) loss of signal (LOS) signal, which signifies a period without an burst data optical signal, for reducing a synch time of the burst data received from the ONUs, the synch time being an allotted time during which an optical line terminal (OLT) recovers data from a received burst signal;
- and
- a serializer/deserializer (SerDes) unit for reducing the synch time when the MPCP LOS signal is generated, and recovering the received burst data by performing a code-group sort in a period where the MPCP LOS signal is not generated.
Dependencies are inferred from the claim text.