PILOT CONFIGURATION METHOD, CHANNEL MEASUREMENT METHOD, AND COMMUNICATION DEVICE

1 . A pilot configuration method, applied to a base station, the method comprises:

determining, by the base station, configuration information of an N-port Channel State Information-Reference Signal, CSI-RS, according to a CSI-RS configuration pattern predefined by a system; wherein the CSI-RS configuration pattern represents time-frequency position configuration for Resource Elements, REs, of CSI-RSs of different ports in a slot when at least one Orthogonal Frequency Division Multiplexing, OFDM, symbol in a Physical Resource Block, PRB, is used as a time-domain unit, the configuration information at least comprises the number of ports and an index parameter, the number of ports is N, the index parameter indicates a time-frequency position of an RE of a CSI-RS of each of N ports in the slot, and N is a positive integer;

transmitting, by the base station, the configuration information to a terminal connected to the base station by signaling, and transmitting the CSI-RS according to the configuration information, so that the terminal determines a time-frequency position of an RE of the N-port CSI-RS in the slot according to the configuration information and the CSI-RS configuration pattern predefined by the system, and performs a channel measurement by using the CSI-RS at the time-frequency position.

2 . The method of claim 1 , wherein the index parameter comprises a configuration pattern index and an OFDM symbol index, the configuration pattern index is a position index of the RE of the CSI-RS determined according to the CSI-RS configuration pattern predefined by the system in the frequency domain, and the OFDM symbol index indicates a position of an OFDM symbol corresponding to the RE of the CSI-RS in the time domain.

3 . The method of claim 2 , wherein when N=1, 2 or 4,

determining, by the base station, configuration information of the N-port CSI-RS according to the CSI-RS configuration pattern predefined by the system, comprises:

determining, by the base station, an index parameter of the RE of the N-port CSI-RS in the slot according to the CSI-RS configuration pattern predefined by the system;

determining, by the base station, the configuration information of the CSI-RS according to the port number of the N-port and the index parameter.

4 . The method of claim 2 , wherein when N≥8, the configuration information further comprises an aggregation parameter represents an aggregation mode of the RE of the N-port CSI-RS in the slot;

determining, by the base station, configuration information of the N-port CSI-RS according to the CSI-RS configuration pattern predefined by the system, comprises:

determining, by the base station, an aggregation parameter of the N-port CSI-RS, and determining an index parameter of the RE of each aggregation part of the N-port CSI-RS in the slot respectively according to the CSI-RS configuration pattern predefined by the system;

determining, by the base station, the configuration information of the CSI-RS according to the port number of the N-port, the index parameter and the aggregation parameter.

5 . The method of claim 4 , wherein when the base station transmits the index parameter in the configuration information to the connected terminal by signaling, the method comprises:

transmitting, by the base station, configuration pattern indexes and OFDM symbol indexes of all REs of the N-port CSI-RS to the terminal by signaling; or

transmitting, by the base station, a configuration pattern index and an OFDM symbol index of at least one RE of the N-port CSI-RS to the terminal by signaling.

6 . A channel measurement method, applied to a terminal, wherein the method comprises:

receiving configuration information of an N-port Channel State Information-Reference Signal, CSI-RS, transmitted by a base station through signaling, and receiving the CSI-RS transmitted by the base station according to the configuration information; wherein the configuration information at least comprises the number of ports and an index parameter, the index parameter is used to indicate a time-frequency position of a Resource Element, RE, of a CSI-RS of each of N ports in a slot, and N is a positive integer;

determining, by the terminal, a time-frequency position of the N-port CSI-RS in the slot according to the configuration information and a CSI-RS configuration pattern predefined by a system; wherein the CSI-RS configuration pattern represents time-frequency position configuration for REs of CSI-RSs of different ports in the slot when at least one Orthogonal Frequency Division Multiplexing, OFDM, symbol in a Physical Resource Block, PRB, is used as a time-domain unit;

performing, by the terminal, a channel measurement by using the CSI-RS at the time-frequency position.

7 . The method of claim 6 , wherein when the configuration information further comprises an aggregation parameter, which represents an aggregation mode of the RE of the N-port CSI-RS in the slot;

determining, by the terminal, the time-frequency position of the RE of the N-port CSI-RS in the slot according to the configuration information and the CSI-RS configuration pattern predefined by the system, comprises:

determining, by the terminal, a time-frequency position of each aggregation part of the N-port CSI-RS in the slot according to the number of ports, the aggregation parameter, the index parameter, and the CSI-RS configuration pattern predefined by the system.

8 . A base station, comprising: a memory and a processor, wherein:

the processor is configured to read programs in the memory to:

determine configuration information of an N-port Channel State Information-Reference Signal, CSI-RS, according to a CSI-RS configuration pattern predefined by a system; wherein the CSI-RS configuration pattern represents time-frequency position configuration for Resource Elements, REs, of CSI-RSs of different ports in a slot when at least one Orthogonal Frequency Division Multiplexing, OFDM, symbol in a Physical Resource Block, PRB, is used as a time-domain unit, the configuration information at least comprises the number of ports and an index parameter, the number of ports is N, the index parameter indicates a time-frequency position of an RE of a CSI-RS of each of N ports in the slot, and N is a positive integer;

transmit the configuration information to a terminal connected to the base station by signaling, and transmit the CSI-RS according to the configuration information, so that the terminal determines a time-frequency position of an RE of the N-port CSI-RS in the slot according to the configuration information and the CSI-RS configuration pattern predefined by the system, and performs a channel measurement by using the CSI-RS at the time-frequency position.

9 . The base station of claim 8 , wherein the index parameter comprises a configuration pattern index and an OFDM symbol index, the configuration pattern index is a position index of the RE of the CSI-RS determined according to the CSI-RS configuration pattern predefined by the system in the frequency domain, and the OFDM symbol index indicates a position of an OFDM symbol corresponding to the RE of the CSI-RS in the time domain.

10 . The base station of claim 9 , wherein when N=1, 2 or 4,

the processor is configured to:

determine an index parameter of the RE of the CSI-RS in the slot according to the CSI-RS configuration pattern predefined by the system;

determine the configuration information of the CSI-RS according to the port number of the N-port and the index parameter.

11 . The base station of claim 9 , wherein when N≥8, the configuration information further comprises an aggregation parameter represents an aggregation mode of the RE of the N-port CSI-RS in the slot;

the processor is configured to:

determine an aggregation parameter of the N-port CSI-RS, and determine an index parameter of the RE of each aggregation part of the N-port CSI-RS in the slot respectively according to the CSI-RS configuration pattern predefined by the system;

determine the configuration information of the CSI-RS according to the port number of the N-port, the index parameter and the aggregation parameter.

12 . The base station of claim 11 , wherein when transmitting the index parameter in the configuration information to the connected terminal by signaling, the processor is configured to:

transmit configuration pattern indexes and OFDM symbol indexes of all REs of the N-port CSI-RS to the terminal by signaling; or

transmit a configuration pattern index and an OFDM symbol index of at least one RE of the N-port CSI-RS to the terminal by signaling.

13 . A terminal, comprising: a memory and a processor, wherein the processor is configured, when executing a computer program stored in the memory, to implement the method of claim 6 .

14 . The terminal of claim 13 , wherein when the configuration information further comprises an aggregation parameter, which represents an aggregation mode of the RE of the CSI-RS in the slot;

the processor is configured to determine a time-frequency position of each aggregation part of the N-port CSI-RS in the slot according to the number of ports, the aggregation parameter, the index parameter, and the CSI-RS configuration pattern predefined by the system.

15 . (canceled)

16 . A computer readable storage medium, wherein the computer readable storage medium stores computer instructions, which cause a computer to perform the method of claim 1 when running on the computer.

17 . A computer readable storage medium, wherein the computer readable storage medium stores computer instructions, which cause a computer to perform the method of claim 6 when running on the computer.