Title:
RELAY DEVICE AND COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/117270
Kind Code:
A1
Abstract:
The present invention is provided with: a plurality of physical ports (111-1 to 111-N) that receive frames; and a layer 2 protocol processing unit (113) that causes at least one port among the plurality of physical ports (111-1 to 111-N) to transfer a frame which is received by one of the plurality of physical ports (111-1 to 111-N), wherein the layer 2 protocol processing unit (113) is equipped with a filtering function for blocking frames other than a time synchronization frame during transfer which involves a port selected from the plurality of physical ports (111-1 to 111-N) as a port for relaying only the time synchronization frame for use in time synchronization.
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Inventors:
NAKAYASU TOSHIYUKI (JP)
TANIGUCHI SACHIKO (JP)
KAWATE RYUSUKE (JP)
TANIGUCHI SACHIKO (JP)
KAWATE RYUSUKE (JP)
Application Number:
PCT/JP2020/022691
Publication Date:
June 17, 2021
Filing Date:
June 09, 2020
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H04L7/00; H04L12/28
Domestic Patent References:
| WO2019220632A1 | 2019-11-21 |
Foreign References:
| JP2008172587A | 2008-07-24 | |||
| JP2018121123A | 2018-08-02 | |||
| JP2017216563A | 2017-12-07 | |||
| JP2014183386A | 2014-09-29 | |||
| JPS6045950B2 | 1985-10-12 |
Other References:
See also references of EP 4057564A4
Attorney, Agent or Firm:
YAMAGATA Yoichi et al. (JP)
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