Title:
COMMUNICATION DEVICE AND COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2014/002273
Kind Code:
A1
Abstract:
A communication device (3) of a second communication system that shares a frequency band with a first communication system (2) is provided with: a wireless transmission unit (30) for transmitting a wireless signal; a receiving unit (33) for receiving information relating to an available frequency band, which is determined from a data base device (4) accessible through the network and which depends on the location of the communication device (3), and information relating to the predicted received field strength of this frequency band; a measuring unit (31) for measuring the received field strength of the frequency band; and correction units (34, 35) for correcting the transmission power of the wireless transmission unit (30) according to the result of a comparison of the actual received field strength and the predicted received field strength of the frequency band.
Inventors:
TSUTSUI MASAFUMI (JP)
Application Number:
PCT/JP2012/066781
Publication Date:
January 03, 2014
Filing Date:
June 29, 2012
Export Citation:
Assignee:
FUJITSU LTD (JP)
TSUTSUI MASAFUMI (JP)
TSUTSUI MASAFUMI (JP)
International Classes:
H04W52/24; H04W16/14
Foreign References:
| US20110317019A1 | 2011-12-29 | |||
| JP2012034326A | 2012-02-16 |
Other References:
DAVID GURNEY ET AL.: "Geo-location Database Techniques for Incumbent Protection in the TV White Space", NEW FRONTIERS IN DYNAMIC SPECTRUM ACCESS NETWORKS, 2008. DYSPAN 2008. 3RD IEEE SYMPOSIUM ON, 14 October 2008 (2008-10-14)
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)
Aoki 篤 (JP)
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