| 摘要 |
This relay device (30) is provided with: a first transmission/reception unit (31) for performing interconversion between an optical signal and an electric signal, the first transmission/reception unit being connected to an upper-side PON circuit (1); a second transmission/reception unit (38) for performing interconversion between an optical signal and an electric signal, the second transmission/reception unit being connected to a lower-side PON circuit (2); relay processors (32, 33, 35, 37) for relaying downstream frames received by the first transmission/reception unit (31) to the second transmission/reception unit (38), and relaying upstream frames received by the second transmission/reception unit (38) to the first transmission/reception unit (31); and a controller (34). The controller (34) follows upstream multiple access control performed by the station-side device (10) for transmission of upstream frames transmitted by the first transmission/reception unit (31) to a station-side device (10); and independently performs upstream multiple access control for reception of upstream frames received by the second transmission/reception unit (38) from a home-side device (20). |
