Exchange device

摘要

The exchange device groups PON branches into PON branch groups based on the amount of communication data traffic that has arrived via a communication network with a plurality of optical network units (ONUs) respectively belonging to one of a plurality of PON branches as a transmission destination, multiplexes the communication data for each PON group, and transmits the multiplexed data. The exchange device has an unit configured to transmit each piece of communication data from the ONUs to one output port selected from among a plurality of output ports based on the transmission wavelength of the communication data. The exchange device groups a plurality of PON branches into PON branch groups based on the required bandwidth of each of the ONUs, and designates the transmission wavelength for each of the ONUs so that each piece of the communication data from one PON branch group is transmitted to one port.

主权项

1. An exchange device comprising:
a multiplexing unit configured to generate a plurality of series of multiplexed data by multiplexing for each PON branch group communication data having as a transmission destination any of a plurality of optical network units respectively belonging to one of a plurality of PON branches; a wavelength designation unit configured to designate a transmission wavelength corresponding to the PON branches for each piece of communication data; a plurality of transmission units configured to transmit each piece of communication data forming the multiplexed data using a carrier wave of the designated transmission wavelength; a selection and transmission unit configured to transmit each piece of transmitted communication data to one of the plurality of PON branches selected based on the transmission wavelength; and a combination change unit configured to change a combination of the PON branches included in the PON branch group based on a traffic amount of the communication data, wherein the combination change unit comprises:
an average value calculation unit configured to intermittently calculate an average value of a total traffic amount of the communication data;a threshold setting unit configured to set a threshold based on a change in the average value; anda combination unit configured to combine any of the plurality of PON branches and setting the combination as the PON branch group so that a sum value of the required bandwidth for each of the PON branches does not exceed the threshold.