Device and method for data communication using a transmission ring buffer

A data communication method comprising:

• reading out, using at least one processor, IP transmission data stored in a transmission ring buffer area;
• transmitting, using the at least one processor, the read-out IP transmission data to a transmission destination device through an external network, the read-out IP packet transmission data including a first sequence number associated with the transmission ring buffer area, and the read-out IP packet transmission data segmented into a plurality of packets;
• and
• receiving, using the at least one processor, a reception confirming notification for the transmitted IP transmission data from the transmission destination device, the reception confirming notification including a second sequence number associated with the transmission destination device, the first sequence number, and a tail pointer identifier associated with the first sequence number indicating a position for a tail pointer for the transmission ring buffer area, wherein
• the reading out includes reading out the IP transmission data to be transmitted based on a storage position of last data of the IP transmission data stored in the transmission ring buffer area and a storage position of last data of the transmitted IP transmission data indicated by the tail pointer identifier, and
• the receiving includes retransmitting the read-out IP packet transmission data when the transmission destination reception confirming notification is not received from the transmission destination device.

A data communication device, comprising:

• a memory configured to store data in a transmission ring buffer area;
• a memory controller configured to read out the data from the memory;
• and
• at least one processor configured to,
• generate IP packet data based on the read out data, the IP packet data being segmented into a plurality of packets and including a first sequence number associated with the transmission ring buffer area,
• establish a TCP session,
• transmit the generated IP packet data to a transmission destination device through an external network via the established TCP session,
• receive a reception confirming notification for the transmitted IP packet transmission data from the transmission destination device, the reception confirming notification including a second sequence number associated with the transmission destination device, the first sequence number, and a tail pointer identifier associated with the first sequence number indicating a position for a tail pointer for the transmission ring buffer area, wherein the at least one processor is configured to
• control the memory controller so that the IP packet transmission data to be transmitted is read out based on a storage position of last data of the transmission data stored in the transmission ring buffer area and a storage position of last data of the transmitted IP transmission data indicated by the tail pointer identifier, and
• retransmit the read-out IP packet transmission data when the transmission destination reception confirming notification is not received from the transmission destination device.