Control channel transmitting method, receiving method, base station and terminal
First Claim
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1. A control channel transmitting method, comprising:
- selecting one control channel format from among a plurality of control channel formats, each including modulation scheme information, according to whether Multiple Input Multiple Output (MIMO) transmission is applied or not; and
transmitting a control channel with the use of the selected control channel format,wherein a number of bits indicating a modulation scheme included in a control channel format to be selected when the MIMO transmission is applied is greater than that included in a control channel format to be selected when the MIMO transmission is not applied.
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Abstract
A step of selecting one control channel format from among a plurality of control channel formats having different information amounts according to a predetermined condition; and a step of transmitting a control channel with the use of the thus-selected control channel format are carried out.
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Citations
18 Claims
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1. A control channel transmitting method, comprising:
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selecting one control channel format from among a plurality of control channel formats, each including modulation scheme information, according to whether Multiple Input Multiple Output (MIMO) transmission is applied or not; and transmitting a control channel with the use of the selected control channel format, wherein a number of bits indicating a modulation scheme included in a control channel format to be selected when the MIMO transmission is applied is greater than that included in a control channel format to be selected when the MIMO transmission is not applied. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 16)
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11. A base station comprising:
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a format selecting part configured to select a control channel format from among a plurality of control channel formats, each including modulation scheme information, according to whether Multiple Input Multiple Output (MIMO) transmission is applied or not; and a transmitting part configured to transmit a control channel to a terminal with the use of the selected control channel format, wherein a number of bits indicating a modulation scheme included in a control channel format to be selected when the MIMO transmission is applied is greater than that included in a control channel format to be selected when the MIMO transmission is not applied. - View Dependent Claims (12, 13)
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14. A terminal comprising:
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a control channel demodulating part configured to have a control channel format notified from a base station which transmits a control channel with the use of the control channel format which is selected from among a plurality of control channel formats, each including modulation scheme information, according to whether Multiple Input Multiple Output (MIMO) transmission is applied or not, and demodulate the control channel received from the base station with the use of the notified control channel format; and a data channel demodulating part configured to demodulate a data channel received from the base station with the use of a result of the demodulation of the control channel carried out by the control channel demodulating part, wherein a number of bits indicating a modulation scheme included in a control channel format to be selected when the MIMO transmission is applied is greater than that included in a control channel format to be selected when the MIMO transmission is not applied.
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15. A terminal comprising:
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a transmitting part configured to have a control channel format notified from a base station, selected from among a plurality of control channel formats, each including modulation scheme information, according to whether Multiple Input Multiple Output (MIMO) transmission is applied or not, and transmit a control channel to the base station with the use of the notified control channel format, wherein a number of bits indicating a modulation scheme included in a control channel format to be selected when the MIMO transmission is applied is greater than that included in a control channel format to be selected when the MIMO transmission is not applied.
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17. A receiving method performed by a terminal, comprising:
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receiving a control channel transmitted by a base station using a channel format determined among a plurality of control channel formats, each including modulation scheme information, according to whether Multiple Input Multiple Output (MIMO) transmission is applied or not, wherein a number of bits indicating a modulation scheme included in a control channel format to be selected when the MIMO transmission is applied is greater than that included in a control channel format to be selected when the MIMO transmission is not applied.
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18. A method used in a communication system including a base station and a terminal, the method comprising:
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selecting, by the base station, one control channel format from among a plurality of control channel formats, each including modulation scheme information, according to whether Multiple Input Multiple Output (MIMO) transmission is applied or not; transmitting a control channel from the base station to the terminal with the use of the selected control channel format, and receiving the control channel by the terminal, wherein a number of bits indicating a modulation scheme included in a control channel format to be selected when the MIMO transmission is applied is greater than that included in a control channel format to be selected when the MIMO transmission is not applied.
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Specification