Title:
COMMUNICATION SYSTEM, SMART METER, GATEWAY DEVICE, AND COMMUNICATION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2016/189995
Kind Code:
A1
Abstract:
Provided are a communication system, a smart meter, a gateway device, and a communication program, with which it is possible to ensure communication between the gateway device, which in order to conserve power consumption may not always be started up, and the smart meter, which is always started up. The present invention has: asynchronous communication units 141, 231, with which a first relay unit 140 of the smart meter 100 and a second relay unit 230 of the gateway device can communicate in an asynchronous mode, in which normal communication is possible, between the gateway device 200 and the smart meter 100; synchronization control units 143, 233 for establishing and maintaining synchronization by transmitting and receiving synchronization signals and synchronization confirmation signals between the gateway device 200 and the smart meter 100; and synchronization communication units 144, 234 for communicating between the gateway device 200 and the smart meter 100 in a startup state and in a synchronization mode for communicating at a prescribed timing conforming to the established synchronization.
Inventors:
NISHIDA TOSHIO (JP)
SHIRAKAWA MASAKAZU (JP)
SHIRAKAWA MASAKAZU (JP)
Application Number:
PCT/JP2016/062009
Publication Date:
December 01, 2016
Filing Date:
April 14, 2016
Export Citation:
Assignee:
TOSHIBA KK (JP)
International Classes:
H04W4/38; H04W52/02; H04L7/00; H04L12/46; H04L29/08; H04M11/00; H04Q9/00; H04W4/00; H04W56/00
Foreign References:
| JP2012010143A | 2012-01-12 | |||
| JP2009290718A | 2009-12-10 | |||
| JPH0923185A | 1997-01-21 | |||
| JP2002150461A | 2002-05-24 | |||
| JPH0936969A | 1997-02-07 |
Attorney, Agent or Firm:
KIUCHI, MITSUHARU (JP)
Mitsuharu Kiuchi (JP)
Mitsuharu Kiuchi (JP)
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