Base station using a multicarrier communication band divided into a plurality of blocks
View Patent ↗It is possible to use a frequency of a preferable propagation condition while reducing the other cell interference by hopping. A scheduler section ( 102 ) performs scheduling for deciding a user to whom data is transmitted, by using the CQI from each communication terminal device, selects a user signal to be transmitted in the next frame, and decides a sub-carrier block by which the transmission is performed. An MCS judgment section ( 103 ) selects a modulation method and a coding method from the CQI of the user signal selected. A sub-carrier block selection section ( 110 ) selects a sub-carrier block specified by the scheduler section ( 102 ) for each user signal. For each of the sub-carrier blocks, the hopping pattern is selected by FH-sequence selection sections ( 111 - 1 to 111 -n). A sub-carrier mapping section ( 112 ) maps the user signal and the control data to the sub-carrier according to the hopping pattern selected.
1. A base station apparatus that performs radio communication with a communication terminal apparatus using a multicarrier communication band divided into a plurality of blocks, the base station apparatus comprising:
an assignment section that assigns one of the plurality of blocks to first data according to communication quality information from the communication terminal apparatus, the first data being encoded and modulated according to the communication quality information, and that assigns a predetermined block to second data without regard to the communication quality information, the second data being encoded and modulated without regard to the communication quality information; and
a frequency hopping section that performs frequency hopping of the first data and the second data assigned to the respective blocks.
2. The base station apparatus according to claim 1 , wherein the communication quality information comprises a CIR of each block that is calculated in the communication terminal apparatus based on power of a desired signal of said each block and an average value of power of an interference signal over the plurality of blocks.
3. A communication method in a base station apparatus that performs radio communication with a communication terminal apparatus using a multicarrier communication band divided into a plurality of blocks, the method comprising:
assigning one of the plurality of blocks to first data according to communication quality information from the communication terminal apparatus, the first data being encoded and modulated according to the communication quality information, and assigning a predetermined block to second data without regard to the communication quality information, the second data being encoded and modulated without regard to the communication quality information; and
performing frequency hopping of the first data and the second data assigned to the respective blocks.
4. The base station apparatus according to claim 1 , wherein the first data and the second data are transmitted simultaneously using frequencies different from each other.
5. The base station apparatus according to claim 1 , wherein the frequency hopping section performs frequency hopping of the first data and the second data assigned to the respective blocks according to frequency hopping patterns different from each other.
6. The base station apparatus according to claim 1 , wherein the frequency hopping section performs frequency hopping of the first data between the plurality of blocks, and performs frequency hopping of the second data in one block.
7. The base station apparatus according to claim 1 , wherein:
the first data comprises user data; and
the second data comprises control data.