Title:
COMMUNICATION SYSTEM, METHOD FOR CONTROLLING COMMUNICATION SYSTEM, TRANSMISSION DEVICE, AND RECEPTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/203449
Kind Code:
A1
Abstract:
A counter (11), synchronized with a counter (26) in another communication device (2), outputs a first counter value that indicates a point in time before a processing unit (13) that processes PTP packets receives input. A multiplexing unit (12) multiplexes said first counter value onto a PTP packet. The other counter (26) outputs a second counter value that indicates the point in time at which another processing unit (23) that processes PTP packets finishes processing. A counter-value extraction unit (24) extracts the first counter value from the aforementioned PTP packet. On the basis of the second counter value, the first counter value, and the value of a correction field in the PTP packet that represents the total delay introduced by relay devices, a modification unit (25) computes a modified value and modifies the correction field therewith. A communication system, method for controlling a communication system, transmission device, and reception device whereby a delay field can be modified using a simple architecture are thus provided.
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Inventors:
SHIBATA KAZUKI (JP)
Application Number:
PCT/JP2014/002612
Publication Date:
December 24, 2014
Filing Date:
May 19, 2014
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04L7/00; H04W56/00
Domestic Patent References:
| WO2011131556A1 | 2011-10-27 | |||
| WO2012086372A1 | 2012-06-28 |
Foreign References:
| JP2010213101A | 2010-09-24 |
Attorney, Agent or Firm:
IEIRI, Takeshi (JP)
House ON 健 (JP)
House ON 健 (JP)
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