Error recovery system and method of using the NAK (Negative response)

摘要

PROBLEM TO BE SOLVED: To reduce traffic quantity without deteriorating the recovery capability. ;SOLUTION: In a communication network comprising a sending node and a receiving node, if the receiving node fails to receive a first message, the receiving node sends a NAK to the sending node. The sending node is operable to screen the NAK upon the receipt to determine whether or not the receipt of the NAK by the sending node triggers retransmission of the first message from the sending node. Concretely, the system for communication comprising the network having a sending node (12) for sending the first message and a receiving node (14) for receiving the first message is characterized in that if the receiving node (14) fails to receive the first message, the receiving node sends a NAK to the sending node, and the sending node is operable to screen the NAK upon the receipt to determine whether or not the receipt of the NAK by the sending node triggers retransmission of the first message from the sending node.;COPYRIGHT: (C)2003,JPO