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US 8,619,885 B2Granted
Radio communication system
AssigneeNtt Docomo, Inc.
InventorsHiromasa Fujii, Hitoshi Yoshino
Life of this patent
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Abstract
The second radio communication system selects one or more of the sub-carriers S21 to be used in accordance with a condition of the sub-carriers S11. The second radio communication system transmits a radio signal by using the sub-carriers S21 selected. In the selection of sub-carrier, the sub-carrier S21 located between the plurality of sub-carriers S11 radiated in the frequency band BW2.
Claims9
A radio communication system comprising:
- a first radio communication system configured to transmit and receive a radio signal in a prescribed frequency band by using a plurality of first sub-carriers having a prescribed frequency spacing therebetween;
- and
- a second radio communication system configured to transmit and receive a radio signal in an adjacent frequency band adjacent to the prescribed frequency band by using a plurality of second sub-carriers, wherein
- the second radio communication system includes
- a sub-carrier selection unit configured to select one or more of the second sub-carriers to be used in accordance with a condition of the first sub-carriers, and
- a transmission unit configured to transmit the radio signal by using the second sub-carriers selected by the sub-carrier selection unit, and wherein
- the sub-carrier selection unit selects the second sub-carriers located between the plurality of first sub-carriers radiated in the adjacent frequency band.
4 more elements
Dependencies are inferred from the claim text.