OBTAINING METHOD AND DEVICE FOR CHANNEL INFORMATION
First Claim
1. A method for acquiring channel information, comprising:
- for one subband, a User Equipment (UE) acquiring Rank Indicator (RI) information of a current channel, wherein a rank (ν
) of said current channel is indicated in the RI information, and ν
is a positive integral number not greater than 8;
the user equipment determining the quantity of Precoding Matrix Indicator (PMI) information required to be fed back to a base station according to ν
, and transmitting the PMI information in said quantity and the RI information to the base station; and
the base station acquiring channel information of said subband according to the PMI information in said quantity and said RI information.
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Accused Products
Abstract
A method and device for acquiring channel information are disclosed in the present invention, to solve a technical problem in the related art that the channel information cannot be fed back flexibly according to requirements. The method includes: for one subband, User Equipment (UE) acquires Rank Indicator (RI) information of a current channel, in which the RI information indicates a rank (ν) of the current channel, and ν is a positive integral number not greater than 8; the user equipment determines the quantity of the Precoding Matrix Indicator (PMI) information required to be fed back to a base station according to ν, and transmits the PMI information in said quantity and the RI information to the base station; the base station acquires the channel information of said subband according to the PMI information in said quantity and said RI information.
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Citations
16 Claims
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1. A method for acquiring channel information, comprising:
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for one subband, a User Equipment (UE) acquiring Rank Indicator (RI) information of a current channel, wherein a rank (ν
) of said current channel is indicated in the RI information, and ν
is a positive integral number not greater than 8;the user equipment determining the quantity of Precoding Matrix Indicator (PMI) information required to be fed back to a base station according to ν
, and transmitting the PMI information in said quantity and the RI information to the base station; andthe base station acquiring channel information of said subband according to the PMI information in said quantity and said RI information. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. (canceled)
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9. (canceled)
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10. (canceled)
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11. A device for acquiring channel information, comprising:
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a receiving module, which is configured to receive Precoding Matrix Indicator (PMI) information transmitted by a user equipment and Rank Indicator (RI) information of a current channel; and an acquiring module, which is configured to acquire channel information of a subband according to said PMI information and RI information received by said receiving module; wherein the quantity of said PMI information is determined by the user equipment according to a rank ν
of the current channel, and ν
is indicated in said RI information and ν
is a positive integral number not greater than 8. - View Dependent Claims (12, 13)
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14. (canceled)
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15. (canceled)
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16. (canceled)
Specification