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Patent Searching and Data


Title:
COMMUNICATION SYSTEM, MASTER DEVICE, SLAVE DEVICE, AND SUBMASTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/213190
Kind Code:
A1
Abstract:
A communication system (100) according to the invention is provided with a master device (1) and a plurality of slave devices (2). The slave devices (2) each store a synchronization period and a correction amount of the difference between a time of the master device (1) and a time of the slave device (2). The master device (1): acquires the correction amount from the slave device (2); calculates a correspondence between the synchronization period and the correction amount on the basis of the correction amount acquired from the slave device (2); calculates a target synchronization period in the slave device (2) on the basis of the correspondence of the slave device (2); classifies the slave devices (2) into a plurality of groups on the basis of the target synchronization periods in the slave devices (2); and sets the maximum target synchronization period, out of the target synchronization periods in one or more slave devices (2) classified to the groups, as a new synchronization period in which the master device (1) performs a time synchronization with the one or more slave devices (2).

Inventors:
YAMAMOTO HIROYUKI (JP)
Application Number:
JP2019/036616
Publication Date:
October 22, 2020
Filing Date:
September 18, 2019
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H04L7/00; G04G5/00; H04J3/06; H04L12/28
Foreign References:
US20140269673A12014-09-18
JP2015068806A2015-04-13
US20180226993A12018-08-09
JP2009182659A2009-08-13
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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