Apparatus and method for feeding back channel quality information and scheduling apparatus and method using the same in a wireless communication system
First Claim
1. A method for transmitting channel quality indicator (CQI) in a wireless communication system, the method comprising:
- calculating, at the mobile station, one of a first sub-band CQI for a first sub-band selected by a mobile station from an entire band including a plurality of sub-bands, and a second sub-band CQI for a second sub-band configured by a high layer from among the plurality of sub-bands of the entire band; and
transmitting, at the mobile station, one of the first sub-band CQI and the second sub-band CQI,wherein, if the first sub-band CQI is transmitted, information denoting the first sub-band selected by the mobile station is transmitted with the first sub-band CQI, andwherein, if the second sub-band CQI is transmitted, information denoting the second sub-band is not transmitted with the second sub-band CQI.
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Abstract
An apparatus and method are provided for feeding back channel quality information and performing scheduling using the fed-back channel quality information in a wireless communication system based on Orthogonal Frequency Division Multiple Access (OFDMA). A base station controls power of a physical channel using information fed back from a mobile station. In a method for feeding back channel quality information from the mobile station, sub-band-by-sub-band channel quality information is measured and channel-by-channel quality information of a number of channels is transmitted in order of sub-bands of better channel quality information. Average channel quality information for a total band is measured and transmitted.
16 Citations
20 Claims
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1. A method for transmitting channel quality indicator (CQI) in a wireless communication system, the method comprising:
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calculating, at the mobile station, one of a first sub-band CQI for a first sub-band selected by a mobile station from an entire band including a plurality of sub-bands, and a second sub-band CQI for a second sub-band configured by a high layer from among the plurality of sub-bands of the entire band; and transmitting, at the mobile station, one of the first sub-band CQI and the second sub-band CQI, wherein, if the first sub-band CQI is transmitted, information denoting the first sub-band selected by the mobile station is transmitted with the first sub-band CQI, and wherein, if the second sub-band CQI is transmitted, information denoting the second sub-band is not transmitted with the second sub-band CQI. - View Dependent Claims (2, 3, 4, 5)
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6. A method for receiving channel quality indicator (CQI) in a wireless communication system, the method comprising:
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receiving, at a base station, one of first sub-band CQI for a first sub-band selected by a mobile station from an entire band including a plurality of sub-bands and a second sub-band CQI for a second sub-band configured by a high layer from among the plurality of sub-bands of the entire band, the one of the first sub-band CQI or the second sub-band CQI being calculated at the mobile station, wherein, if the first sub-band CQI is received, information denoting the first sub-band selected by the mobile station is received with the first sub-band CQI, and wherein, if the second sub-band CQI is received, information denoting the second sub-band is not received with the second sub-band CQI. - View Dependent Claims (7, 8, 9, 10)
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11. An apparatus for transmitting, at a mobile station, channel quality indicator (CQI) in a wireless communication system, the apparatus comprising:
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a transmitter configured to transmit data, and at least one processor coupled with the transmitter and configured to; calculate one of a first sub-band CQI for a first sub-band selected by the mobile station from an entire band including a plurality of sub-bands and a second sub-band CQI for a second sub-band configured by a high layer from among the plurality of sub-bands of the entire band, and control the transmitter to transmit one of the first sub-band CQI and the second sub-band CQI, wherein, if the first sub-band CQI is transmitted, information denoting the first sub-band selected by the mobile station is transmitted with the first sub-band CQI, and wherein, if the second sub-band CQI is transmitted, information denoting the second sub-band is not transmitted with the second sub-band CQI. - View Dependent Claims (12, 13, 14, 15)
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16. An apparatus for receiving, at a base station, channel quality indicator (CQI) in a wireless communication system, the apparatus comprising:
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a receiver configured to receive data; and at least one processor coupled with the receiver and configured to; control the receiver to receive one of first sub-band CQI for a first sub-band selected by a mobile station from an entire band including a plurality of sub-bands and a second sub-band CQI for a second sub-band configured by a high layer from among the plurality of sub-bands of the entire band, the one of the first sub-band CQI or the second sub-band CQI being calculated at the mobile station, wherein, if the first sub-band CQI is received, information denoting the first sub-band selected by the mobile station is received with the first sub-band CQI, and wherein, if the second sub-band CQI is received, information denoting the second sub-band is not received with the second sub-band CQI. - View Dependent Claims (17, 18, 19, 20)
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Specification