Title:
FORWARDING DEVICE AND TIME SYNCHRONIZATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/105777
Kind Code:
A1
Abstract:
A forwarding device (10) performs Pdelay message reception processing (101), Sync/Follow up message reception processing (102), Announce message reception processing (103), Sync reception/transmission guard management processing (104), delay measurement computation processing (105), time synchronization computation processing (106), time selection computation processing (107), and frame transmission processing (108). The forwarding device (10) performs port-by-port monitoring of the reception state of an Announce message (61) that reports time source information and, when the monitoring indicates that the state of a time source has worsened, e.g., that the reliability of a time has dropped, does not forward a Sync/Follow_up message (51) for time synchronization. The forwarding device (10) thereby causes the Sync/Follow_up message (51) to time out and rapidly reports the worsening of the time source to other devices.
Inventors:
TANIGUCHI SACHIKO (JP)
MATSUSHITA RYUMA (JP)
TAJIRI YUSUKE (JP)
MATSUSHITA RYUMA (JP)
TAJIRI YUSUKE (JP)
Application Number:
PCT/JP2021/045608
Publication Date:
June 15, 2023
Filing Date:
December 10, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H04L7/00
Foreign References:
| JP2013514688A | 2013-04-25 | |||
| US20140281037A1 | 2014-09-18 | |||
| US20160149692A1 | 2016-05-26 | |||
| JP2015216438A | 2015-12-03 |
Attorney, Agent or Firm:
CROSS-BORDER PATENT FIRM (JP)
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