Base station apparatus and radio communication method
First Claim
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1. A base station apparatus, comprising:
- a capturer that captures channel quality information about a downlink channel quality measured at a communication terminal;
a receiver that receives a TPC command from the communication terminal;
a calculator that calculates an amount of fluctuation in the downlink channel quality using the TPC command; and
a determiner that compensates the channel quality information with reference to the amount of fluctuation and determines a modulating scheme and a coding scheme for transmission of data to the communication terminal according to the compensated channel quality information.
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Abstract
An SIR information extracting section 106 extracts SIR measured at a communication terminal from the received data, and a fluctuation amount calculating section 109 calculates a fluctuation amount of SIR between time at which the communication terminal has measured SIR and transmission starting time of DSCH data using a TPC command, and a. transmission system determining section 110 adds the SIR fluctuation amount calculated in the fluctuation amount calculating section 109 to the SIR measured at the communication terminal and estimates SIR of DSCH data so as to determine an optimal transmission system of DSCH data according to the estimated SIR.
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Citations
4 Claims
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1. A base station apparatus, comprising:
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a capturer that captures channel quality information about a downlink channel quality measured at a communication terminal;
a receiver that receives a TPC command from the communication terminal;
a calculator that calculates an amount of fluctuation in the downlink channel quality using the TPC command; and
a determiner that compensates the channel quality information with reference to the amount of fluctuation and determines a modulating scheme and a coding scheme for transmission of data to the communication terminal according to the compensated channel quality information. - View Dependent Claims (2, 3)
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4. A radio communication method, comprising:
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capturing channel quality information about a downlink channel quality measured at a communication terminal;
receiving a TPC command from the communication terminal;
calculating an amount of fluctuation in the downlink channel quality with reference to the TPC command;
compensating the channel quality information with reference to the amount of fluctuation; and
determining a modulating scheme and a coding scheme for transmission of data to the communication terminal according to the compensated channel quality information.
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Specification