Method and apparatus for transmitting data on plc network by classifying data

The present invention relates to a method for more relates to the efficient method of transmitting data and the apparatus, in particular grade of service traffic on the high-speed PLC network (Power Line Communication Network) screen and transmits and assigns the data transmission channel data in accordance with the grade and It relates to an apparatus. Data transfer method according to the invention is characterized in that for determining the transmission priority of the data passed from an upper layer, and transmits the data according to the determined priority, depending on the nature of the service traffic, and transmits data in this way Thereby, it is possible to provide differentiated QoS depending on the nature of the service traffic.