Patent ID: 11909658
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A signal transfer method performed by a signal transfer system,
the signal transfer system comprising:
a plurality of signal transfer devices configured to transfer a plurality of signals while switching a first transmission period during which high-priority traffic is transmitted and a second transmission period during which low-priority traffic is transmitted; and
a path control device configured to control a plurality of paths that transfer the plurality of signals via the plurality of signal transfer devices, wherein
the method comprises:
detecting an end of high-priority traffic in the first transmission period;
in a case in which the end of high-priority traffic is detected, making a transmission schedule to change the first transmission period after the end of high-priority traffic to the second transmission period;
measuring a statistical value in the second transmission period based on the transmission schedule;
calculating the plurality of paths through which the signals are transferred, based on network configuration information indicating a configuration of a network to which the plurality of signal transfer devices and the path control device are connected;
estimating the second transmission period in the plurality of paths calculated, based on the statistical value sent from the plurality of signal transfer devices, determining the number of low-priority traffic flows to be accommodated, and determining or changing the plurality of paths for low-priority traffic at a shorter cycle than a cycle at which the number of low-priority traffic flows is determined;
determining, for each of the plurality of signal transfer devices, output destination setting information such that the plurality of paths estimated are set to an output destination of low-priority traffic; and
outputting low-priority traffic based on the output destination setting information.