METHOD AND APPARATUS FOR DECIDING CHANNEL QUALITY INDICATOR IN WIRELESS COMMUNICATION SYSTEM
First Claim
1. A method of deciding a Channel Quality Indicator (CQI) using a genetic algorithm (GA) in a mobile communication terminal, comprising:
- randomly generating CQI values encoded into genotypes to form an initial genetic group;
evaluating fitnesses using the CQI values and a measured block error rate (BLER), and if the CQI value indicating the highest fitness is not within a range of the BLER, selecting a specific gene of genes of the initial genetic group to perform crossover and mutation operations; and
repeating the crossover and mutation operations to allow a new genetic group generated by the crossover and mutation operations to be within the range of the BLER.
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Abstract
Provided are a method and an apparatus for deciding a channel quality indicator (CQI) in a wireless communication system. The method includes randomly generating CQI values encoded into genotypes to form an initial genetic group; evaluating fitnesses using the CQI values and a measured block error rate (BLER), and if the CQI value indicating the highest fitness is not within a range of the BLER, selecting a specific gene of genes of the initial genetic group to perform crossover and mutation operations; and repeating the crossover and mutation operations to allow a new genetic group generated by the crossover and mutation operations to be within the range of the BLER.
20 Citations
19 Claims
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1. A method of deciding a Channel Quality Indicator (CQI) using a genetic algorithm (GA) in a mobile communication terminal, comprising:
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randomly generating CQI values encoded into genotypes to form an initial genetic group; evaluating fitnesses using the CQI values and a measured block error rate (BLER), and if the CQI value indicating the highest fitness is not within a range of the BLER, selecting a specific gene of genes of the initial genetic group to perform crossover and mutation operations; and repeating the crossover and mutation operations to allow a new genetic group generated by the crossover and mutation operations to be within the range of the BLER. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of reporting a CQI in a mobile communication terminal, comprising:
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observing a corresponding wireless channel to measure a BLER; deciding a CQI value indicating highest fitness using a GA calculating fitnesses using the BLER and a CQI value; and encoding the decided CQI value and transmitting the encoded CQI value to a base station.
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9. A method of transmitting data using a CQI in a base station, comprising:
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receiving an encoded CQI value from a mobile communication terminal deciding a CQI value using a GA and decoding the encoded CQI value; and transmitting data to the mobile communication terminal in consideration of a modulation scheme and a channel encoding rate corresponding to the decoded CQI value.
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10. An apparatus for deciding a CQI using a GA in a mobile communication terminal, comprising:
a CQI selector for randomly generating CQI values encoded into genotypes to form an initial genetic group measuring fitnesses using the CQI values and a measured BLER if the CQI value indicating the highest fitness is not within a range of the measured BLER, selecting a specific gene of genes of the initial genetic group to perform crossover and mutation operations, and repeating the crossover and mutation operations to allow a new genetic group generated by the crossover and mutation operations to be within the range of the measured BLER so as to search for the CQI values. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A mobile communication terminal reporting a CQI, comprising:
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a receiver observing a corresponding wireless channel to measure a BLER; a CQI selector receiving an instruction from a controller to decide a CQI value indicating highest fitness using a GA calculating fitnesses using the BLER and a CQI value; and a transmitter encoding the decided CQI value and transmitting the encoded CQI value to a base station.
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18. A base station transmitting data using a CQI, comprising:
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a receiver receiving an encoded CQI value from a mobile communication terminal deciding a CQI value using a GA and decoding the encoded CQI value; and a transmitter transmitting data to the mobile communication terminal in consideration of a modulation scheme and a channel encoding rate corresponding to the decoded CQI value.
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19. A computer-readable recording medium having recorded thereon a program for a Channel Quality Indicator (CQI) using a genetic algorithm (GA) in a mobile communication terminal, comprising:
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a first code segment, for generating CQI values encoded into genotypes to form an initial genetic group; and a second code segment, for evaluating fitnesses using the CQI values and a measured block error rate (BLER), and if the CQI value indicating the highest fitness is not within a range of the BLER, selecting a specific gene of genes of the initial genetic group to perform crossover and mutation operations; and a third code segment, for repeating the crossover and mutation operations to allow a new genetic group generated by the crossover and mutation operations to be within the range of the BLER.
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Specification