METHOD AND APPARATUS FOR TRANSRECEIVING CHANNEL STATE INFORMATION IN COOPERATIVE MULTIPOINT COMMUNICATION SYSTEM
First Claim
1. A method for transmitting channel state information (CSI) on multiple base stations in a wireless communication system, the method performed by a user equipment and comprising:
- receiving first CSI configuration information on report of CSI, which includes at least one of a rank indicator (RI), precoding matrix indicator (PMI) and channel quality indicator (CQI) of a first base station;
receiving second CSI configuration information on report of CSI, which includes at least one of an RI, PMI and CQI of a second base station; and
transmitting. CSI on the first base station and CSI on the second base station on the basis of the first CSI configuration information and the second CSI configuration information,wherein a parameter of part or all of the second CSI configuration information is set to a value equal to a parameter corresponding to the first CSI configuration information.
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Accused Products
Abstract
The present invention relates to a method and apparatus for transmitting channel state information in a cooperative multipoint communication system. A method for a terminal transmitting the channel state information (CSI) to multiple base stations according to one embodiment includes receiving a first piece of CSI setting information with respect to reporting of CSI including at least one of a rank indicator (RI), a precoding matrix indicator (PMI), and a channel quality indicator (CQI), with respect to a first base station; receiving a second piece of CSI setting information with respect to reporting of CSI including at least one of an RI, a PMI, and a CQI, with respect to a second base station; and transmitting the CSI with respect to the first base station and the second base station on the basis of the CSI setting information on the first and second base stations.
40 Citations
14 Claims
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1. A method for transmitting channel state information (CSI) on multiple base stations in a wireless communication system, the method performed by a user equipment and comprising:
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receiving first CSI configuration information on report of CSI, which includes at least one of a rank indicator (RI), precoding matrix indicator (PMI) and channel quality indicator (CQI) of a first base station; receiving second CSI configuration information on report of CSI, which includes at least one of an RI, PMI and CQI of a second base station; and transmitting. CSI on the first base station and CSI on the second base station on the basis of the first CSI configuration information and the second CSI configuration information, wherein a parameter of part or all of the second CSI configuration information is set to a value equal to a parameter corresponding to the first CSI configuration information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for supporting coordinated multi point (CoMP) communication, the method performed by a first base station and comprising:
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transmitting first CSI configuration information on report of CSI, which includes at least one of a rank indicator (RI), precoding matrix indicator (PMI) and channel quality indicator (CQI) of the first base station, to a user equipment; transmitting second CSI configuration information on report of CSI, which includes at least one of an RI, PMI and CQI of a second base station, to the user equipment; and receiving CSI on the first base station and CSI on the second base station on the basis of the first CSI configuration information and the second CSI configuration information from the user equipment, wherein a parameter of part or all of the second CSI configuration information is set to a value equal to a parameter corresponding to the first CSI configuration information.
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13. A user equipment for transmitting channel state information (CSI) on multiple base stations, the user equipment comprising:
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a reception module configured to receive a downlink signal from a first base station and a second base station; a transmission module configured to transmit an uplink signal to the first base station and the second base station; and a processor configured to control the user equipment, which includes the reception module and transmission module, wherein the processor receives first CSI configuration information on report of CSI, which includes at least one of a rank indicator (RI), precoding matrix indicator (PMI) and channel quality indicator (CQI) of the first base station, through the reception module, receives second CSI configuration information on report of CSI, which includes at least one of an RI, PMI and CQI of the second base station, through the reception module, and transmits CSI on the first base station and CSI on the second base station on the basis of the first CSI configuration information and the second CSI configuration information, through the transmission module, and a parameter of part or all of the second CSI configuration information is set to a value equal to a parameter corresponding to the first CSI configuration information.
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14. A first base station for supporting CoMP communication, the first base station comprising:
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a reception module configured to receive an uplink signal from a user equipment and receive information between base stations from a second base station; a transmission module configured to transmit a downlink signal to the user equipment and transmit information between the base stations to the second base station; and a processor configured to control the first base station, which includes the reception module and transmission module, wherein the processor transmits first CSI configuration information on report of CSI, which includes at least one of a rank indicator (RI), precoding matrix indicator (PMI) and channel quality indicator (CQI) of the first base station, through the transmission module, transmits second CSI configuration information on report of CSI, which includes at least one of an RI, PMI and CQI of a second base station, through the transmission module, and receives CSI on the first base station and CSI on the second base station on the basis of the first CSI configuration information and the second CSI configuration information through the reception module, and a parameter of part or all of the second CSI configuration information is set to a value equal to a parameter corresponding to the first CSI configuration information.
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Specification