RADIO COMMUNICATION METHOD AND RADIO COMMUNICATION DEVICE
First Claim
1. A wireless communication method for transmitting a single carrier frequency division multiple access signal, the method comprising:
- a frequency allocating step of allocating frequency bands to a plurality of antennas of a terminal individually in a single carrier frequency division multiple access scheme; and
a selecting step of, when the frequency bands are allocated to the plurality of antennas, selecting between allocating different frequency bands to the plurality of antennas and allocating same frequency bands to the plurality of antennas, according to a communication environment.
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Accused Products
Abstract
When the SC-FDMA method is used in combination with the multi-antenna transmission technique, a radio transmission method effectively improves the frequency use efficiency by performing appropriate frequency allocation to a plurality of antennas while suppressing degradation of the reception quality caused by interference. In the radio transmission method of the SC-FDMA type, according to the number of terminals simultaneously accessing a base station within a usable frequency band, it is possible to allocate all the transmission signals (transmission stream) to be transmitted by different antennas to different frequency bands or to use the MIMO transmission in combination. Moreover, according to the number of terminals making an access, the number of terminals which perform the MIMO transmission can be varied.
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Citations
10 Claims
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1. A wireless communication method for transmitting a single carrier frequency division multiple access signal, the method comprising:
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a frequency allocating step of allocating frequency bands to a plurality of antennas of a terminal individually in a single carrier frequency division multiple access scheme; and a selecting step of, when the frequency bands are allocated to the plurality of antennas, selecting between allocating different frequency bands to the plurality of antennas and allocating same frequency bands to the plurality of antennas, according to a communication environment. - View Dependent Claims (2, 3, 4)
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5. A wireless communication method of a distributed single carrier frequency division multiple access scheme for allocating distributed frequency bands to terminals, the method comprising allocating frequency bands to a first terminal in the terminals in x carrier intervals, and allocating frequency bands to a second terminal in the terminals in y (x≠
- y) carrier intervals.
- View Dependent Claims (6)
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7. A wireless communication method of a distributed single carrier frequency division multiple access scheme for allocating distributed frequency bands to terminals, the method comprising changing allocation of frequencies to the terminals over time.
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8. A wireless communication method comprising the steps of:
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in a base station, measuring received quality of a plurality of carriers that are allocated to a terminal; in the terminal, acquiring information about the received quality; and in the terminal, allocating transmission data to the plurality of carriers based on the information about the received quality such that the transmission data is not erroneous in a burst manner. - View Dependent Claims (9)
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10. A wireless communication apparatus that transmits a single carrier frequency division multiple access signal, the apparatus comprising:
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a plurality of antennas; and a frequency allocating section that, when the frequency bands are allocated to the plurality of antennas, selects between allocating different frequency bands to the plurality of antennas and allocating same frequency bands to the plurality of antennas, according to a communication environment, and that performs frequency allocation.
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Specification