Title:
RADIO SENSOR TERMINAL, RADIO DATA AGGREGATION DEVICE, AND RADIO SENSOR NETWORK SYSTEM
Document Type and Number:
Japanese Patent JP2017228962
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a mechanism that can reduce delay time and power consumption even when a radio sensor network system is constructed by arranging radio sensor terminals at sufficiently shorter intervals compared with their communication maximum distance.SOLUTION: A radio sensor terminal includes a sensor, a radio communication unit, and a processor. The processor selects, as a connection destination of the terminal, another terminal smaller in reception radio wave strength of a radio notification packet than other terminals when the terminal connects to a radio sensor network system, and makes the radio communication unit periodically transmit a radio notification packet after completion of connection to the radio sensor network system.SELECTED DRAWING: Figure 3
Inventors:
SERIZAWA YASUTAKA
MAZAWA SHIRO
MATSUMOTO HISAKATSU
MAZAWA SHIRO
MATSUMOTO HISAKATSU
Application Number:
JP2016124314A
Publication Date:
December 28, 2017
Filing Date:
June 23, 2016
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H04W4/029; H04W40/12; H04W40/02; H04W40/10; H04W40/20; H04W76/04; H04W84/18
Attorney, Agent or Firm:
Yusuke Hiraki
Sekiya Mitsuo
Toshiaki Watanabe
Sekiya Mitsuo
Toshiaki Watanabe