Title:
COMMUNICATION DEVICE, AND PROGRAM AND METHOD USED FOR COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/145039
Kind Code:
A1
Abstract:
A communication device (10) has a first clock (101), and transmits/receives a packet to/from another communication device (20) having a second clock (201) via a communication network (30), the communication device being provided with: a communication unit (102) that receives a first packet transmitted from the other communication device, and transmits a second packet to be transmitted to the other communication device; a delay time acquisition unit (103) that acquires a first delay time from the time of transmission by the other device to the time of reception by the device itself of the first packet, and a second delay time from the time of transmission by the device itself to the time of reception by the other device of the second packet; a selection unit (104) that selects, as an object packet, one of the first and second packets; and a correction unit (105) that, on the basis of the minimum value of the first delay time or minimum value of the second delay time acquired within a predetermined period, calculates a correction value as a time difference between the first clock and the second clock, and corrects the delay time of the object packet using the correction value.
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Inventors:
NAKATA TSUNEO (JP)
Application Number:
PCT/JP2020/039283
Publication Date:
July 22, 2021
Filing Date:
October 19, 2020
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H04L7/00; G04G5/00
Domestic Patent References:
| WO2014016993A1 | 2014-01-30 |
Foreign References:
| JP2014165582A | 2014-09-08 | |||
| JP2016025474A | 2016-02-08 |
Attorney, Agent or Firm:
FUJIE Kazunori et al. (JP)
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