Title:
TIME SYNCHRONIZATION METHOD, COMMUNICATION DEVICE AND TIME SYNCHRONIZATION SYSTEM
Document Type and Number:
Japanese Patent JP2006074326
Kind Code:
A
Abstract:
To reduce power consumption without requiring long stand-by time duration for receiving a time synchronization signal.
A reference terminal B11 distributes a time synchronization signal S13 at transmission time T28 two or more times continuously with a time synchronization cycle T27. Peripheral terminals B15-B18 receive the time synchronization signal S13 by sensing in, at the maximum, double time duration of the transmission time T28 of the time synchronization signal. The optimum number of continuous distributions of the time synchronization signal performed by the reference terminal B 11 is determined based on clock accuracy, the time synchronization cycle T27, and transmission time T28 of the time synchronization signal S13.
Inventors:
SHIYOUJITSU SHIGERU
YOSHINO SHUICHI
SHIMIZU MASAFUMI
YOSHINO SHUICHI
SHIMIZU MASAFUMI
Application Number:
JP2004253959A
Publication Date:
March 16, 2006
Filing Date:
September 01, 2004
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
H04L7/00; G04G5/00; G04R20/00; G04R20/26; H04B7/26; H04L12/28; H04W4/04; H04W40/00; H04W52/02; H04W56/00; H04W84/12
Attorney, Agent or Firm:
Masatake Shiga
Yasuhiko Murayama
Yasuhiko Murayama