noun
retransmission
Technical computing term for sending data again, typically due to errors or packet loss.
パケットロスが発生したため、データの再送信が必要です。
Packet loss occurred, so retransmission of the data is necessary.
再送 is a more general term for resending or retransmission, while 再送信 is specifically used in computing and telecommunications.
Compound of 再 (re-) + 送信 (transmission).