| 摘要 |
PURPOSE:To prevent the degradation of transmission efficiency occurred by performing unnecessary ACK return and a checksum calculation in a communication path with a high eliability. CONSTITUTION:This method is characterized by deciding the reliability of the transmission line to an opposite station by referring to a communication path reliability table 2 in a transmission station, by transmitting 5 the information showing the presence or absence of the necessity of a check-sum calculation for the header part of a packet 3 and the necessity of the presence or absence of the necessity of an ACK return 4 by storing the informationn in the header part, and by omitting the checksum calculation and the ACK return when they are not necessary based on the information on the presence or absence of the necessity of the checksum calculation and the ACK return stored in this header part in a reception station. |
