Title:
無線通信システム、無線端末及び時刻同期方法
Document Type and Number:
Japanese Patent JP6649475
Kind Code:
B2
Abstract:
A time synchronization system includes a first wireless device and a second wireless device. A wireless unit of the first wireless device wirelessly transmits timing information and time information separately, the time information being acquired from a first clock and relating to a transmission time when the timing information was transmitted. A wireless unit of the second wireless device receives the wirelessly transmitted timing information and time information separately. A correction unit of the second wireless device corrects s a second clock on the basis of a reference time indicated by the second clock at a time when the wireless unit received the timing information, and a transmission time obtained from the time information.
Inventors:
Shigeru sunshine
Mamoru Kobayashi
Akabane Kazunori
Mamoru Kobayashi
Akabane Kazunori
Application Number:
JP2018518354A
Publication Date:
February 19, 2020
Filing Date:
May 18, 2017
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04L7/00; G04G5/00; G04R20/00; H04W56/00
Domestic Patent References:
| JP2009111654A | ||||
| JP2014023090A | ||||
| JP2006109433A | ||||
| JP2015114290A |
Foreign References:
| US20080273521 |
Attorney, Agent or Firm:
Shiga International Patent Office