Patent ID: 7733886
Filing Date: 2010-06-08
Classification: H04J,H04Q

Abstract:
1. 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.