Channel measurement method, terminal device, and base station
First Claim
1. A channel measurement method, comprising:
- receiving, by a terminal from a base station, first measurement configuration information used for measuring a first channel;
measuring, by the terminal, the first channel according to the first measurement configuration information, to obtain first channel state information (CSI), wherein the first CSI comprises a first rank indication (RI);
reporting, by the terminal to the base station, the first CSI;
receiving, by the terminal from the base station, second measurement configuration information used for measuring a second channel;
determining, according to the first RI that is obtained by measuring and reported to the base station, a range of a second RI;
measuring, by the terminal in the range of the second RI, the second channel according to the second measurement configuration information, to obtain second CSI, wherein the second CSI comprises the second RI;
reporting, by the terminal to the base station, the second CSI;
receiving, by the terminal, third measurement configuration information used for measuring a third channel;
determining, by the terminal, a range of a third RI according to one or both of the first RI and the second RI; and
measuring, by the terminal in the range of the third RI, the third channel according to the third measurement configuration information, to obtain third CSI,wherein the third CSI comprises the third RI,wherein the range of the third RI comprises;
the third RI≤
the first RI, or the third RI<
the first RI;
ora value obtained by rounding a quotient of the first RI and the second RI≤
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the second RI<
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the second RI≤
the third RI<
the first RI, or a value obtained by rounding a quotient of the first RI and the second RI<
the third RI<
the first RI, wherein the rounding is rounding up or rounding down;
ora value obtained by rounding a quotient of the first RI and the configured RI in the second channel information≤
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information<
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information≤
the third RI<
the first RI, or a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information<
the third RI<
the first RI, wherein the rounding is rounding up or rounding down;
orthe third RI≤
a value obtained by rounding a quotient of the first RI and the second RI, or the third RI<
a value obtained by rounding a quotient of the first RI and the second RI, wherein the rounding is rounding up or rounding down;
orthe third RI≤
a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information, or the third RI<
a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information, wherein the rounding is rounding up or rounding down;
orthe third RI=a value obtained by rounding a quotient of the first RI and the second RI, wherein the rounding is rounding up or rounding down;
orthe third RI=a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information, wherein the rounding is rounding up or rounding down.
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Accused Products
Abstract
The present invention discloses a channel measurement method, including: acquiring first channel information, where the first channel information includes one or more of the following information: first CSI of a first channel, and first measurement configuration information used for measuring the first channel; receiving second measurement configuration information sent by a base station and used for measuring a second channel, and measuring the second channel according to the first channel information and the second measurement configuration information, to obtain second CSI. The present invention further discloses a terminal device and a base station. Subsets of a CSI-RS pattern of a whole antenna and a CSI-RS pattern of a partial antenna are configured and feedbacks to quality information of a whole channel and quality information of a partial channel are combined, so that not only signaling is reduced but also feedback accuracy is improved.
34 Citations
15 Claims
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1. A channel measurement method, comprising:
-
receiving, by a terminal from a base station, first measurement configuration information used for measuring a first channel; measuring, by the terminal, the first channel according to the first measurement configuration information, to obtain first channel state information (CSI), wherein the first CSI comprises a first rank indication (RI); reporting, by the terminal to the base station, the first CSI; receiving, by the terminal from the base station, second measurement configuration information used for measuring a second channel; determining, according to the first RI that is obtained by measuring and reported to the base station, a range of a second RI; measuring, by the terminal in the range of the second RI, the second channel according to the second measurement configuration information, to obtain second CSI, wherein the second CSI comprises the second RI; reporting, by the terminal to the base station, the second CSI; receiving, by the terminal, third measurement configuration information used for measuring a third channel;
determining, by the terminal, a range of a third RI according to one or both of the first RI and the second RI; andmeasuring, by the terminal in the range of the third RI, the third channel according to the third measurement configuration information, to obtain third CSI, wherein the third CSI comprises the third RI, wherein the range of the third RI comprises; the third RI≤
the first RI, or the third RI<
the first RI;
ora value obtained by rounding a quotient of the first RI and the second RI≤
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the second RI<
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the second RI≤
the third RI<
the first RI, or a value obtained by rounding a quotient of the first RI and the second RI<
the third RI<
the first RI, wherein the rounding is rounding up or rounding down;
ora value obtained by rounding a quotient of the first RI and the configured RI in the second channel information≤
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information<
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information≤
the third RI<
the first RI, or a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information<
the third RI<
the first RI, wherein the rounding is rounding up or rounding down;
orthe third RI≤
a value obtained by rounding a quotient of the first RI and the second RI, or the third RI<
a value obtained by rounding a quotient of the first RI and the second RI, wherein the rounding is rounding up or rounding down;
orthe third RI≤
a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information, or the third RI<
a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information, wherein the rounding is rounding up or rounding down;
orthe third RI=a value obtained by rounding a quotient of the first RI and the second RI, wherein the rounding is rounding up or rounding down;
orthe third RI=a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information, wherein the rounding is rounding up or rounding down. - View Dependent Claims (2, 3, 4, 5)
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6. A device, comprising:
a processor and a non-transitory computer readable storage medium, wherein the non-transitory computer readable storage medium comprises a program stored therein, and when the program is executed, causes the processor to; receive, from a base station, first measurement configuration information used for measuring a first channel; measure the first channel according to the first measurement configuration information, to obtain first channel state information (CSI), wherein the first CSI comprises a first rank indication (RI); report, to the base station, the first CSI; receive, from the base station, second measurement configuration information used for measuring a second channel; determine, according to the first RI that is obtained by measuring and reported to the base station, a range of a second RI; measure, in the range of the second RI, the second channel according to the second measurement configuration information, to obtain second CSI, wherein the second CSI comprises the second RI; report, to the base station, the second CSI; receive third measurement configuration information used for measuring a third channel; determine a range of a third RI according to one or both of the first RI and the second RI; and measure, in the range of the third RI, the third channel according to the third measurement configuration information, to obtain third CSI, wherein the third CSI comprises the third RI, wherein the range of the third RI comprises; the third RI≤
the first RI, or the third RI<
the first RI;
ora value obtained by rounding a quotient of the first RI and the second RI≤
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the second RI<
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the second RI≤
the third RI<
the first RI, or a value obtained by rounding a quotient of the first RI and the second RI<
the third RI<
the first RI, wherein the rounding is rounding up or rounding down;
ora value obtained by rounding a quotient of the first RI and the configured RI in the second channel information≤
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information<
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information≤
the third RI<
the first RI, or a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information<
the third RI<
the first RI, wherein the rounding is rounding up or rounding down;
orthe third RI≤
a value obtained by rounding a quotient of the first RI and the second RI, or the third RI<
a value obtained by rounding a quotient of the first RI and the second RI, wherein the rounding is rounding up or rounding down;
orthe third RI≤
a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information, or the third RI<
a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information, wherein the rounding is rounding up or rounding down;
orthe third RI=a value obtained by rounding a quotient of the first RI and the second RI, wherein the rounding is rounding up or rounding down;
orthe third RI=a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information, wherein the rounding is rounding up or rounding down. - View Dependent Claims (7, 8, 9, 10)
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11. A base station, comprising:
-
a processor and a non-transitory computer readable storage medium, wherein the non-transitory computer readable storage medium comprises a program stored therein, and when the program is executed, causes the processor to; send, to a terminal device, first measurement configuration information used for measuring a first channel; send, to the terminal device, second measurement configuration information used for measuring a second channel; receive first channel state information (CSI) that is obtained by the terminal device by measuring the first channel according to the first measurement configuration information and that is reported to the base station, wherein the first CSI comprises a first rank indication (RI); receive second CSI that is obtained by the terminal device by measuring, in a range of a second RI, the second channel according to the second measurement configuration information and that is reported to the base station, wherein the second CSI comprises the second RI, and the range of the second RI is determined according to the first RI; send third measurement configuration information used for measuring a third channel; and receive third CSI that is obtained by the terminal device by measuring, in a range of a third RI, the third channel according to the third measurement configuration information and that is reported by the terminal device, wherein the third CSI comprises the third RI, wherein the range of the third RI comprises; the third RI≤
the first RI, or the third RI<
the first RI;
ora value obtained by rounding a quotient of the first RI and the second RI≤
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the second RI<
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the second RI≤
the third RI<
the first RI, or a value obtained by rounding a quotient of the first RI and the second RI<
the third RI<
the first RI, wherein the rounding is rounding up or rounding down;
ora value obtained by rounding a quotient of the first RI and the configured RI in the second channel information≤
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information<
the third RI≤
the first RI, or a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information≤
the third RI<
the first RI, or a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information<
the third RI<
the first RI, wherein the rounding is rounding up or rounding down;
orthe third RI≤
a value obtained by rounding a quotient of the first RI and the second RI, or the third RI<
a value obtained by rounding a quotient of the first RI and the second RI, wherein the rounding is rounding up or rounding down;
orthe third RI≤
a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information, or the third RI<
a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information, wherein the rounding is rounding up or rounding down;
orthe third RI=a value obtained by rounding a quotient of the first RI and the second RI, wherein the rounding is rounding up or rounding down;
orthe third RI=a value obtained by rounding a quotient of the first RI and the configured RI in the second channel information, wherein the rounding is rounding up or rounding down. - View Dependent Claims (12, 13)
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14. A channel measurement method, comprising:
-
receiving, by a terminal from a base station, first measurement configuration information used for measuring a first channel; measuring, by the terminal, the first channel according to the first measurement configuration information, to obtain first channel state information (CSI), wherein the first CSI comprises a first rank indication (RI); reporting, by the terminal to the base station, the first CSI, wherein the reported first CSI comprises the first RI and a first precoding matrix indicator (PMI); receiving, by the terminal from the base station, second measurement configuration information used for measuring a second channel; determining, according to the first RI that is obtained by measuring and reported to the base station, a range of a second RI; measuring, by the terminal in the range of the second RI, the second channel according to the second measurement configuration information, to obtain second CSI, wherein the second CSI comprises the second RI; reporting, by the terminal to the base station, the second CSI; and determining the first PMI according to the first measurement configuration information and the first RI, wherein a port quantity of a precoding matrix corresponding to the first PMI is a port quantity of a pilot in the first measurement configuration information, and an RI of the precoding matrix corresponding to the first PMI is the first RI.
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15. A device, comprising:
a processor and a non-transitory computer readable storage medium, wherein the non-transitory computer readable storage medium comprises a program stored therein, and when the program is executed, causes the processor to; receive, from a base station, first measurement configuration information used for measuring a first channel; measure the first channel according to the first measurement configuration information, to obtain first channel state information (CSI), wherein the first CSI comprises a first rank indication (RI); report, to the base station, the first CSI, wherein the reported first CSI comprises the first RI and a first precoding matrix indicator (PMI); receive, from the base station, second measurement configuration information used for measuring a second channel; determine, according to the first RI that is obtained by measuring and reported to the base station, a range of a second RI; measure, in the range of the second RI, the second channel according to the second measurement configuration information, to obtain second CSI, wherein the second CSI comprises the second RI; report, to the base station, the second CSI; and determine the first PMI according to the first measurement configuration information and the first RI, wherein a port quantity of a precoding matrix corresponding to the first PMI is a port quantity of a pilot in the first measurement configuration information, and an RI of the precoding matrix corresponding to the first PMI is the first RI.
Specification