Title:
COMMUNICATION APPARATUS, TIME SYNCHRONIZATION SYSTEM, AND TIME SYNCHRONIZATION METHOD
Document Type and Number:
WIPO Patent Application WO/2014/016993
Kind Code:
A1
Abstract:
A communication apparatus (13) according to the present invention is provided with: a storage unit (131) that stores in advance difference information (1311), which is the difference between first time information (t1) and second time information (t2), said first time information (t1) being received from a synchronization source communication apparatus (11) as a time synchronization source connected to a transmission system (12) wherein transmission delay time is different depending on the direction of transmission, and said second time information (t2) being obtained from a time synchronization source (14) other than the transmission system (12); and a time synchronization means (132) that carries out, when the second time information (t2) cannot be obtained from the time synchronization source (14), time synchronization with the synchronization source communication apparatus (11) using the difference information (1311) read out from the storage unit (131).
Inventors:
OGAWA TAKATOSHI (JP)
Application Number:
PCT/JP2013/002214
Publication Date:
January 30, 2014
Filing Date:
April 01, 2013
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04L7/00; G04G5/00
Foreign References:
| JP2011122983A | 2011-06-23 | |||
| JP2010062703A | 2010-03-18 | |||
| JP2009065579A | 2009-03-26 | |||
| JP2010278546A | 2010-12-09 | |||
| JP2011135482A | 2011-07-07 |
Other References:
See also references of EP 2879322A4
Attorney, Agent or Firm:
IEIRI, Takeshi (JP)
House ON 健 (JP)
House ON 健 (JP)
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