| 摘要 |
PROBLEM TO BE SOLVED: To improve time synchronization accuracy with a reduced influence caused by packet fluctuation etc.SOLUTION: A master node includes a communication unit for transmitting/receiving a control message to/from a slave node. The slave node includes: a communication unit for transmitting/receiving a control message to/from the master node; a calculation unit for calculating an average delay time and an offset using time information acquired when the communication unit transmits/receives the control message; a storage unit for storing a plurality of average delay times and offsets calculated in the calculation unit in association with each other; and a selection unit for selecting a minimum average delay time among the plurality of average delay times stored in the storage unit, and for selecting an offset corresponding to the selected average delay time; and a time correction unit for correcting the time of the self-node on the basis of the offset selected by the selection unit. |
