METHOD AND APPARATUS FOR TRANSMITTING ETHERNET FRAME

摘要

The present invention relates to a method and an apparatus for transmitting an Ethernet frame and more specifically, to a method and an apparatus for transmitting an Ethernet frame capable of transmitting priority data required for an Ethernet environment for industry such as a distributed embedded based smart power information network. The present invention relates to a method for transmitting an Ethernet frame for a distributed embedded network making a feature of comprising: (a) a step of confirming the transmission request of the Ethernet frame including a higher transmission priority than an Ethernet frame among the Ethernet frame transmission including the predetermined transmission priority; (b) a step of temporally storing the transmission of the Ethernet frame when the transmission request of the Ethernet frame including the higher transmission priority is confirmed; and (c) a step of transmitting a tag value of the Ethernet frame including the higher transmission priority after changing the tag value of the Ethernet frame including the higher transmission priority. The present invention relates to a method for transmitting the Ethernet frame for the distributed embedded network making a feature of changing the tag value in the step (c) by changing a part bit value among the bits organizing a distributed embedded network apparatus identification tag included in the Ethernet frame. According to the present invention, the method may remarkably reduce transmission delay time generated by priority blocking and has an effect for guaranteeing real-time transmission for data including the high transmission priority requested in the distributed embedded based smart power information network. [Reference numerals] (AA) START; (BB) END; (S10) Confirming a transmission request of an Ethernet frame including higher priority order than an Ethernet frame which is transmitted; (S20) Is a transmission request confirmed?; (S30) Storing an Ethernet frame temporally after stopping the transmission of the Ethernet frame; (S40) Transmitting an Ethernet frame including high priority order after changing a tag value of the Ethernet frame; (S50) Re-transmitting temporally stored Ethernet frame after changing a tag value of the temporally stored Ethernet frame again