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Title:
TIME SYNCHRONIZATION DEVICE, TIME SYNCHRONIZATION SYSTEM, AND TIME SYNCHRONIZATION METHOD
Document Type and Number:
WIPO Patent Application WO2015122175
Kind Code:
A1
Abstract:
In order to simplify calculation of delay times in a time synchronization device in a packet network, when executing time synchronization using synchronization signals sent via the packet network, this time synchronization device (20) comprises: a data reception unit (21) that receives synchronization information having a time correction field used when correcting synchronized time information in a client device (30); a pre-data processing time correction unit (22) that deducts information indicating the time that synchronization information was received, from the time correction field, and updates the time correction field; a post-data processing time correction unit (23) that adds, to the time correction information in the time correction field updated in the pre-data processing time correction unit (22), information indicating the time after the synchronization information was data processed and updates the time correction field; and a data transmission unit (24) that sends the updated synchronization information to the client device (30).

Inventors:
OGAWA TAKATOSHI (JP)
Application Number:
JP2015000603W
Publication Date:
August 20, 2015
Filing Date:
February 10, 2015
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Assignee:
NEC CORP (JP)
International Classes:
G04G5/00; G04G7/00; H04L12/70
Foreign References:
JP2011176479A2011-09-08
JP2010232845A2010-10-14
JP2004186877A2004-07-02
JP2002156477A2002-05-31
Attorney, Agent or Firm:
SHIMOSAKA, NAOKI (JP)
Naoki Shimosaka (JP)
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