Communication apparatus and communication method
In order to reduce interference between cells through hopping and use frequencies in a good propagation situation, a scheduler section carries out scheduling for determining to which user data should be sent using CQI from each communication terminal apparatus, selects a user signal to be sent in the next frame and determines in which subcarrier block the data should be sent. An MCS decision section selects a modulation scheme and coding method from the CQI of the selected user signal. A subcarrier block selection section selects a subcarrier block instructed by the scheduler section 102 for each user signal. For the respective subcarrier blocks, FH sequence selection sections select hopping patterns. A subcarrier mapping section maps the user signal and control data to subcarriers according to the selected hopping pattern.
1. A communication apparatus comprising:
a controller, which, in operation, (i) maps control information to a single determined block among a plurality of blocks of one frame into which a frequency band is divided, and (ii) maps data to a block selected from the plurality of the blocks of the one frame, the selected block being indicated by the control information; and
a transmitter, which, in operation, transmits the control information and the data, wherein the control information is mapped to the single determined block by frequency hopping the control information within the single determined block.
2. The communication apparatus according to claim 1 , wherein the data is mapped by frequency hopping the data within the selected block.
3. The communication apparatus according to claim 1 , wherein a plurality of control information for a plurality of data are mapped to the single determined block.
4. A communication method comprising:
mapping control information to a single determined block among a plurality of blocks of one frame into which a frequency band is divided;
mapping data to a block selected from the plurality of the blocks of the one frame, the selected block being indicated by the control information; and
transmitting the control information and the data,
wherein the control information is mapped to the single determined block by frequency hopping the control information within the single determined block.
5. The communication method according to claim 4 , wherein the data is mapped by frequency hopping the data within the selected block.
6. The communication method according to claim 4 , wherein a plurality of control information for a plurality of data are mapped to the single determined block.
7. The communication apparatus according to claim 2 , wherein the frequency hopping of the control information is within a first subcarrier of the frequency band, and the frequency hopping of the data is within a second subcarrier of the frequency band and not within the first subcarrier.