Title:
WIRELESS DISASTERS-PREVENTING NODE AND WIRELESS DISASTERS-PREVENTING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2010/113306
Kind Code:
A1
Abstract:
Provided are a wireless disasters-preventing node and system which enables to judge the degree of congestion of an operating frequency channel due to another system and to allow a user to know an unused frequency channel of low communication frequency. A first utilization rate measurement part (40) measures the utilization rate of the operating frequency channel, and a second utilization rate measurement part (42) measures the utilization rate of the unused frequency channel. In occurrence of congestion wherein the utilization rate measured by the first utilization rate measurement part (40) exceeds a predetermined value, a first utilization rate judging part (44) displays, as a recommended switch destination, the unused frequency channel of a low utilization rate judged by a second utilization rate judgment part (45).
Inventors:
NAKAMURA YOSHIO (JP)
Application Number:
PCT/JP2009/056863
Publication Date:
October 07, 2010
Filing Date:
April 02, 2009
Export Citation:
Assignee:
HOCHIKI CO (JP)
NAKAMURA YOSHIO (JP)
NAKAMURA YOSHIO (JP)
International Classes:
G08B25/10; G08B25/01; G08B25/08
Foreign References:
| JP2006178723A | 2006-07-06 | |||
| JP2005333510A | 2005-12-02 | |||
| JP2009017173A | 2009-01-22 | |||
| JP2002300630A | 2002-10-11 | |||
| JPH05128387A | 1993-05-25 | |||
| JPH05274580A | 1993-10-22 | |||
| JP2001292089A | 2001-10-19 |
Other References:
See also references of EP 2416300A4
Attorney, Agent or Firm:
TAKEUCHI, SUSUMU (JP)
Susumu Takeuchi (JP)
Susumu Takeuchi (JP)
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