QoS routing method and QoS routing device

摘要

PROBLEM TO BE SOLVED: To provide a technique for raising measurement accuracy, while suppressing the overhead of measurement traffic concerning devices for performing QoS routing, based on the measurement result of quality information of a path or a link.;SOLUTION: The QoS routing devices (A1-A4) being the nodes of a logical network for transmitting data to be exchanged between user terminals (D1-D4) respectively comprise: repeating parts (A14) for determining whether received data is the specified data or not and transferring the data; quality measuring parts (A13) for measuring the communication quality value of each link connected to the self device, based on the flow of the specified data; quality accuracy setting parts (A111) for obtaining the measurement accuracy of the communication quality values by each link; and path setting parts (A114) for assigning the number of the flows of the specified data by a higher ratio with respect to the link with the lower measurement accuracy.;COPYRIGHT: (C)2008,JPO&INPIT