Method for performing pre-coding using codebook in wireless communication system and apparatus therefor
First Claim
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1. A method for precoding, performed by a user equipment (UE), using a codebook in a wireless communication system, the method comprising:
- receiving a reference signal for channel estimation from an evolved Node B (eNB);
estimating a channel based on the received reference signal;
determining a precoding matrix related to the estimated channel in a codebook; and
feeding back, to the eNB, a precoding matrix index (PMI) corresponding to the determined precoding matrix,wherein the codebook is generated based on at least one of a region to which the UE belongs and the position of the UE, andwherein the region to which the UE belongs corresponds to one of M×
N regions generated by dividing a specific sector of the eNB into M regions in a first direction and N regions in a second direction.
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Abstract
A method for performing, by a UE, precoding using a codebook in a wireless communication system includes: receiving a reference signal for channel estimation from an eNB; estimating a channel through the received reference signal; determining a precoding matrix related to the estimated channel in a codebook; and feeding back, to the eNB, a precoding matrix index (PMI) corresponding to the determined precoding matrix, wherein the codebook is generated in consideration of at least one of a region to which the UE belongs and the position of the UE.
21 Citations
12 Claims
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1. A method for precoding, performed by a user equipment (UE), using a codebook in a wireless communication system, the method comprising:
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receiving a reference signal for channel estimation from an evolved Node B (eNB); estimating a channel based on the received reference signal; determining a precoding matrix related to the estimated channel in a codebook; and feeding back, to the eNB, a precoding matrix index (PMI) corresponding to the determined precoding matrix, wherein the codebook is generated based on at least one of a region to which the UE belongs and the position of the UE, and wherein the region to which the UE belongs corresponds to one of M×
N regions generated by dividing a specific sector of the eNB into M regions in a first direction and N regions in a second direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A user equipment (UE) that performs precoding using a codebook in a wireless communication system, the UE comprising:
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a transmitter and a receiver; and a processor, functionally connected to the transmitter and receiver, that; controls the receiver to receive a reference signal for channel estimation from an evolved Node B (eNB); estimates a channel based on the received reference signal; determines a precoding matrix related to the estimated channel in a codebook; and feeds back, to the eNB, a precoding matrix index (PMI) corresponding to the determined precoding matrix, wherein the codebook is generated based on at least one of a region to which the UE belongs and the position of the UE, and wherein the region to which the UE belongs corresponds to one of M×
N regions generated by dividing a specific sector of the eNB into M regions in a first direction and N regions in a second direction.
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Specification