Title:
Frequency allocation device, frequency allocation method and wireless communication system
Document Type and Number:
Japanese Patent JP6292296
Kind Code:
B2
Abstract:
A selection unit configured to select a first propagation scheme when a distance over which a radio wave transmitted from a transmission device in the second system at a frequency not used by the first system can travel from a position of the transmission device is greater than a threshold, and select a second propagation scheme resulting in a propagation distance smaller than a propagation distance of the first propagation scheme when the distance over which the radio wave can travel is smaller than the threshold. A determination unit configured to calculate a propagation distance of the transmission radio wave by using a propagation scheme selected by the selection unit, and to determine that the second system can utilize the transmission radio wave when a propagation distance of the transmission device does not reach a propagation scope of a radio wave of a frequency that can be used by the first system.
Inventors:
Kazuaki Ando
Hiroyuki Seki
Hiroyuki Seki
Application Number:
JP2016513585A
Publication Date:
March 14, 2018
Filing Date:
April 17, 2014
Export Citation:
Assignee:
富士通株式会社
International Classes:
H04W16/14; H04W16/18
Foreign References:
| WO2011158502A1 |
Other References:
沢田浩和、ほか,TVホワイトスペースシステムのための伝搬損失モデルの一検討,電子情報通信学会技術研究報告,日本,一般社団法人電子情報通信学会,2014年 2月24日,第113巻、第457号,第69 - 74ページ
Attorney, Agent or Firm:
Yoshiyuki Osuga
virtue Tamio Ei
virtue Tamio Ei
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