Title:
COMMUNICATION SYSTEM, COMMUNICATION DEVICE, AND COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2012/173138
Kind Code:
A1
Abstract:
A communication system comprising first and second primary stations for performing synchronous wireless communication with a secondary station via a first network, and a control station connected to the first and second primary stations via a second network, wherein the control station transmits time information for synchronizing the time of the first and second primary stations to the first and second primary stations, one of the first and second primary stations adjusts the time using the time information from the control station, and the other of the first and second primary stations adjusts the time using notification information, which is information for providing notification of the time information transmitted from the first or second primary station via the first network.
Inventors:
TODA HIDEYUKI (JP)
Application Number:
PCT/JP2012/065111
Publication Date:
December 20, 2012
Filing Date:
June 13, 2012
Export Citation:
Assignee:
YOKOGAWA ELECTRIC CORP (JP)
TODA HIDEYUKI (JP)
TODA HIDEYUKI (JP)
International Classes:
G04G5/00; H04M11/00; H04W56/00; H04W92/20
Foreign References:
| JP2004205465A | 2004-07-22 | |||
| JP2002055180A | 2002-02-20 | |||
| JP2006052945A | 2006-02-23 | |||
| JP2009188929A | 2009-08-20 | |||
| JP2008182385A | 2008-08-07 | |||
| JP2010050761A | 2010-03-04 | |||
| JP2009111654A | 2009-05-21 | |||
| JP2007006079A | 2007-01-11 |
Other References:
"IEEE Std 1588-2008 IEEE Standard for a Precision Clock Synchronization Protocol for Networked Measurement and Control Systems", IEEE INSTRUMENTATION AND MEASUREMENT SOCIETY, 6.5 PTP DEVICE TYPES - 6.6 SYNCHRONIZATION OVERVIEW
See also references of EP 2722718A4
See also references of EP 2722718A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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Claims: