Radio communication apparatus and radio communication method
First Claim
1. A base station for transmitting an orthogonal frequency division multiplexing (OFDM) signal, the base station comprising:
- a transmitting section configured to transmit information of a number to a mobile device, the information of the number corresponding to subcarrier blocks to be used for averaging channel quality, each of the subcarrier blocks including a plurality of subcarriers, wherein the information of the number does not indicate positions of subcarrier blocks to be selected; and
a receiving section configured to receive a signal from the mobile device, the signal including a generated CQI and information indicating positions of selected subcarrier blocks selected by the mobile device, the generated CQI being a value representing an average channel quality across only the selected subcarrier blocks which are corresponding to the information of the number and are providing preferred channel quality, within a communication band used for transmission from the base station to the mobile device, wherein said number is less than the total number of subcarrier blocks within the communication band.
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Accused Products
Abstract
A CIR measuring section measures CIRs of all blocks received and a block selection section makes a threshold decision based on the CIR measurement result and threshold information according to an amount of traffic in the own cell and neighboring cells. As a result of the threshold decision, blocks whose CIRs exceed the threshold are regarded as usable blocks. A CIR averaging section averages the CIRs of the usable blocks and a CQI generation section generates a CQI based on the CIR average value. The CQI generated and selected block numbers are reported to a base station apparatus. This allows the throughput of the own cell and neighboring cells to be improved.
32 Citations
6 Claims
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1. A base station for transmitting an orthogonal frequency division multiplexing (OFDM) signal, the base station comprising:
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a transmitting section configured to transmit information of a number to a mobile device, the information of the number corresponding to subcarrier blocks to be used for averaging channel quality, each of the subcarrier blocks including a plurality of subcarriers, wherein the information of the number does not indicate positions of subcarrier blocks to be selected; and a receiving section configured to receive a signal from the mobile device, the signal including a generated CQI and information indicating positions of selected subcarrier blocks selected by the mobile device, the generated CQI being a value representing an average channel quality across only the selected subcarrier blocks which are corresponding to the information of the number and are providing preferred channel quality, within a communication band used for transmission from the base station to the mobile device, wherein said number is less than the total number of subcarrier blocks within the communication band. - View Dependent Claims (2, 3)
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4. A radio communication method to be carried out by a base station for transmitting an orthogonal frequency division multiplexing (OFDM) signal, the radio communication method comprising:
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transmitting, by said base station, information of a number to a mobile device, the information of the number corresponding to subcarrier blocks to be used for averaging channel quality, each of the subcarrier blocks including a plurality of subcarriers, wherein information of the number does not indicate positions of the subcarrier blocks to be selected; and receiving a signal from the mobile device, the signal including a generated CQI and information indicating positions of selected subcarrier blocks selected by the mobile device, the generated CQI being a value representing an average channel quality across only the selected subcarrier blocks which are corresponding to the information of the number and are providing preferred channel quality, within a communication band used for transmission from the base station to the mobile device, wherein said number is less than the total number of subcarrier blocks within the communication band. - View Dependent Claims (5, 6)
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Specification