Radio communication base station apparatus and radio communication method
A base station apparatus is provided, which includes a generator configured to generate a synchronization signal and a transmitter configured to transmit the generated synchronization signal. The generator is configured to generate a synchronization signal to be mapped on a subcarrier included in one of a plurality of frequency resource candidates that are separated by an interval, which is a common multiple of a determined frequency spacing and a subcarrier spacing between contiguous subcarriers, wherein the subcarrier spacing does not have a value that is a divisor of the determined frequency spacing.
1. A base station apparatus comprising:
a generator configured to generate a synchronization signal to be mapped on a subcarrier included in one of a plurality of frequency resource candidates that are separated by an interval, which is a common multiple of a determined frequency spacing and a subcarrier spacing between contiguous subcarriers, wherein the subcarrier spacing does not have a value that is a divisor of the determined frequency spacing; and
a transmitter configured to transmit the generated synchronization signal.
2. The base station apparatus according to claim 1 , wherein the determined frequency spacing is a spacing between frequencies at which carriers can be set.
3. The base station apparatus according to claim 1 , wherein the determined frequency spacing is a frequency spacing for performing a cell search.
4. The base station apparatus according to claim 1 , wherein the subcarrier on which the synchronization signal is mapped is around a center frequency of said one of the plurality of frequency resource candidates that includes said subcarrier.
5. The base station apparatus according to claim 1 , wherein the subcarrier on which the synchronization signal is mapped is a subcarrier that is closest to a center frequency of a communication frequency bandwidth.
6. The base station apparatus according to the claim 1 , wherein the determined frequency interval is a channel raster of the base station apparatus.
7. A transmission method performed by a base station apparatus, comprising:
generating a synchronization signal to be mapped on a subcarrier included in one of a plurality of frequency resource candidates that are separated by an interval, which is a common multiple of a determined frequency spacing and a subcarrier spacing between contiguous subcarriers, wherein the subcarrier spacing does not have a value that is a divisor of the determined frequency spacing; and
transmitting the generated synchronization signal.
8. An integrated circuit for a wireless communication apparatus, comprising:
a generation section that generates a synchronization signal to be mapped on a subcarrier included in one of a plurality of frequency resource candidates that are separated by an interval, which is a common multiple of a determined frequency spacing and a subcarrier spacing between contiguous subcarriers, wherein the subcarrier spacing does not have a value that is a divisor of the determined frequency spacing; and
a transmission section that transmits the generated synchronization signal.