PROCESSING METHOD FOR CHANNEL STATE INFORMATION, BASE STATION AND TERMINAL

• US 20150349867A1
• Filed: 09/02/2013
• Published: 12/03/2015
• Est. Priority Date: 11/01/2012
• Status: Active Grant

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: GUO, Senbao, LI, Yu Ngok, SUN, Yunfeng, ZHANG, Junfeng
• Granted Patent: US 9,998,194 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04B 7/0486 taking channel rank into account
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04B 7/0632 Channel quality parameters, e.g. channel quality indicator [CQI]
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0029 Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling power control H04W52/04
• CPC Class Codes: H04L 1/003 Adaptive formatting arrangements particular to signalling, e.g. variable amount of bits
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports

Abstract

The present document relates to a method for processing channel state information (CSI), base station and terminal. The method for processing channel state information includes: a base station configuring a plurality of CSI processes for a terminal, each CSI process at least including information of a channel measurement part and information of an interference measurement part; when the base station configures corresponding CSI reference processes for partial or all CSI processes, at least limiting a rank indicator (RI) of the CSI processes for calculating a CSI report to be consistent with an RI of the CSI reference processes by configuring the CSI reference processes; and for the CSI processes configured with the CSI reference processes, the base station receiving the CSI report of the CSI processes according to the RI, or the RI and a PTI, or the RI and a PMI0 corresponding to the CSI reference processes.

Claims

1. A method for processing channel state information (CSI), comprising:

a base station configuring a plurality of CSI processes for a terminal, each CSI process at least including information of a channel measurement part and information of an interference measurement part;

when the base station configures corresponding CSI reference processes for partial or all the CSI processes, at least limiting a rank indicator (RI) of the CSI processes for calculating a CSI report to be consistent with an RI of the CSI reference processes by configuring the CSI reference processes; and

for the CSI processes configured with the CSI reference processes, the base station receiving a CSI report of the CSI processes according to the RI, or the RI and a precoding type indicator (PTI), or the RI and a precoding matrix indicator (PMI0) corresponding to the CSI reference processes.

2. The method according to claim 1, wherein the method further comprises:

when collision of the RI, or the RI and PTI, or the RI and PMI0 corresponding to the plurality of CSI processes configured by the base station occurs on partial or all sub-frames and results in discarding, the base station receiving the CSI report of the CSI processes according to the RI, or the RI and PTI, or the RI and PMI0 of the CSI reference processes corresponding to the CSI processes.

3. The method according to claim 1, wherein,

the RI and PTI refers to a configuration situation that the RI and the PTI are transmitted on a same sub-frame;

and the RI and PMI0 refers to a configuration situation that the RI and the PMI0 are jointly encoded on a same sub-frame for transmission;

or, when the base station configures corresponding CSI reference processes for partial or all the CSI processes, at least limiting the RI of the CSI processes for calculating a CSI report to be consistent with a fed-back RI of the CSI reference processes by configuring the CSI reference processes comprises;

when the base station configures a corresponding CSI reference process for a current CSI process, the CSI process being configured with a same feedback mode and/or feedback type as the corresponding CSI reference process;

or

when the base station configures a corresponding CSI reference process and periodic feedback for a current CSI process, the current CSI process being configured with the same feedback mode and/or feedback type as the corresponding CSI reference process;

or

when the base station configures a corresponding CSI reference process for a current CSI process, a number of ports for non-zero power (NZP) channel state information reference signals (CSI-RS) of the CSI process and the corresponding CSI reference process is eight, and both are configured with RI feedback, the current CSI process being configured with the same feedback mode and/or feedback type as the corresponding CSI reference process;

or

when the base station configures a corresponding CSI reference process for a current CSI process, the number of ports for NZP CSI-RS of the CSI process and the CSI reference process is eight, and both are configured with RI feedback and periodic feedback, the current CSI process being configured with the same feedback mode and/or feedback type as the corresponding CSI reference process;

or

when the base station configures a corresponding CSI reference process for a current CSI process, the number of ports for the NZP CSI-RS of the CSI process and the CSI reference process is eight, and both are configured with RI feedback and a sub-mode 1 of a physical uplink control channel (PUCCH) mode 1-1 or a PUCCH mode 2-1 of periodic feedback, the current CSI process being configured with the same feedback mode and/or feedback type as the corresponding CSI reference process;

or

when the base station configures CSI reference processes only for CSI processes configured as aperiodic feedback, the CSI processes configured as aperiodic feedback being configured with the same feedback mode and/or feedback type as the corresponding CSI reference processes;

or

when the base station configures CSI reference processes only for CSI processes configured as aperiodic feedback and the CSI reference processes are also CSI processes of aperiodic feedback, the CSI processes configured as aperiodic feedback being configured with the same feedback mode and/or feedback type as the corresponding CSI reference processes;

or

when the base station configures a corresponding CSI reference process for a current CSI process and the current CSI process is in a feedback mode 2-1, the corresponding CSI reference process being configured with the same feedback mode and feedback type as the current CSI process;

or

when the base station configures a corresponding CSI reference process for a current CSI process and the current CSI process is in a sub-mode 1 of a feedback mode 1, the corresponding CSI reference process being configured with the same feedback mode and feedback type as the current CSI process.

5. The method according to claim 2, wherein the method further comprises:

when the base station configures the number of ports for the NZP CSI-RS of the CSI processes respectively as eight, and all are configured with RI feedback and CSI reference processes, and a PUCCH feedback mode is a sub-mode 1 of 1-1 or a PUCCH feedback mode 2-1;

or when the base station configures the number of ports for the NZP CSI-RS of the CSI processes respectively as eight, all are configured with RI feedback and CSI reference processes, a PUCCH feedback mode is a sub-mode 1 of 1-1 or a PUCCH feedback mode 2-1, and collision of RI or PTI sub-frames of the CSI processes and of the configured CSI reference processes or collision of RI or PMI0 sub-frames of the CSI processes and of the configured CSI reference processes occurs and results in discarding, the base station configuring the CSI processes and the corresponding CSI reference processes to have the same feedback mode and/or feedback type;

or

when the base station configures the number of ports for the NZP CSI-RS of the CSI processes respectively as eight, and all are configured with RI feedback, CSI reference processes and periodic feedback;

or when the base station configures the number of ports for the NZP CSI-RS of the CSI processes respectively as eight, all are configured with RI feedback, CSI reference processes and periodic feedback, and collision of RI or PTI sub-frames of the CSI processes and of the configured CSI reference processes or collision of RI or PMI0 sub-frames of the CSI processes and of the configured CSI reference processes occurs and results in discarding, the base station configuring the CSI processes and the corresponding CSI reference processes to have the same feedback mode and/or feedback type.

6. The method according to claim 2, wherein,

when collision of the RI, or the RI and PTI, or the RI and PMI0 corresponding to the CSI processes configured by the base station with sub-frames of other CSI processes and discarding occur on partial or all sub-frames, the base station receiving the CSI report of the CSI processes according to the RI, or the RI and PTI, or the RI and PMI0 of the CSI reference processes corresponding to the CSI processes comprises:

when the CSI reference processes and non-CSI reference processes feed back that collision of sub-frames of the RI, or the RI and PTI, or the RI and PMI0 of CSI occurs and results in discarding, the base station receiving the CSI report of the CSI processes corresponding to the CSI reference processes preferentially according to the RI, or the RI and PTI, or the RI and PMI0 corresponding to the CSI reference processes;

or

when a collision occurs and results in discarding,

when collision of the RI, or the PTI and RI, or the RI and PMI0 corresponding to the CSI reference processes with other CSI processes occurs and results in discarding, the base station receiving the CSI report of the CSI processes corresponding to the CSI reference processes according to the RI, or the RI and PTI, or the RI and PMI0 corresponding to a last fed-back CSI reference process;

or

when collision of RI sub-frames of the CSI reference processes with RI or PTI joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, the base station receiving the CSI report of the CSI processes corresponding to the CSI reference processes according to the RI of the CSI reference processes and the last fed-back PTI or PTI=0 or PTI=1;

or

when collision of RI sub-frames of the CSI reference processes with RI or PMI0 joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, the base station receiving the CSI report of the CSI processes corresponding to the CSI reference processes according to the RI corresponding to the CSI reference processes and the last fed-back PMI0 of the CSI processes;

or

when collision of RI or PTI joint coding sub-frames of the CSI reference processes with RI or PTI joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, the base station receiving the CSI report of the CSI processes according to the RI or PTI corresponding to the CSI reference processes;

or

when collision of RI or PTI joint coding sub-frames of the CSI reference processes with RI or PTI joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, the base station receiving the CSI report of the CSI processes according to the RI corresponding to the CSI reference processes and the last fed-back PTI, the CSI report comprising a PMI and/or a channel quality indicator (CQI);

or

when collision of RI or PMI0 joint coding sub-frames of the CSI reference processes with RI or PMI0 joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, the base station receiving the CSI report of the CSI processes according to the RI or CQI corresponding to the CSI reference processes, the CSI report comprising a PMI and/or a CQI;

or

when collision of RI or PTI joint coding sub-frames of the CSI reference processes with RI or PMI0 joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, the base station receiving the CSI report of the CSI processes according to the RI corresponding to the CSI reference processes and the last fed-back PMI0, the CSI report comprising a PMI and/or a CQI;

or

when collision of RI or PMI0 joint coding sub-frames of the CSI reference processes with RI or PMI0 joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, the base station receiving the CSI report of the CSI processes according to the RI corresponding to the CSI reference processes and the last fed-back PTI or PTI=−

0 or PTI=1;

or

when collision of the RI corresponding to the CSI reference processes with other CSI processes occurs and results in discarding, the base station receiving the CSI report of the CSI reference processes according to the RI corresponding to the last fed-back CSI reference process, and receiving the CSI report of the CSI processes according to an RI calculated by a current sub-frame;

or

when collision of the RI corresponding to the CSI reference processes with other CSI processes occurs and results in discarding, the base station receiving the CSI report of the CSI reference processes according to the RI corresponding to the last fed-back CSI reference process or the RI fed back by the CSI processes corresponding to the CSI reference processes.

4. (canceled)

7. A method for processing channel state information (CSI), comprising:

a terminal acquiring CSI processes from a base station, and when part or all of the CSI processes are configured with CSI reference processes, the terminal calculating a CSI report of the CSI processes configured with the CSI reference processes according to a rank indicator (RI), or the RI and a precoding type indicator (PTI), or the RI and a precoding matrix indicator (PMI0) corresponding to the CSI reference processes.

8. The method according to claim 7, wherein the method further comprises:

when collision of the RI, or the RI and PTI, or the RI and PMI0 corresponding to a plurality of CSI processes fed back by the terminal occurs on partial or all sub-frames and results in discarding, calculating the CSI report corresponding to the CSI processes according to the RI, or the RI and PTI, or the RI and PMI0 of the corresponding CSI reference processes.

9. The method according to claim 7, wherein,

the CSI report comprises one or more of the following contents:

PMI, CQI, PMI0 and PMI1,

or, the method further comprises;

when a CSI process of the terminal is configured with a corresponding CSI reference process, the terminal determining that the CSI process and the CSI reference process have a same feedback mode and/or feedback type;

or

when a CSI process of the terminal is configured with a corresponding CSI reference process and periodic feedback, the terminal determining that the CSI process and the CSI reference process have the same feedback mode and or feedback type;

or

when a number of ports for non-zero power (NZP) channel state information reference signals (CSI-RS) of CSI reference processes and CSI processes configured with the CSI reference processes is respectively configured as eight, and all are configured with RI feedback, the terminal determining that the CSI processes and the CSI reference processes have the same feedback mode and/or feedback type;

or

when the number of ports for NZP CSI-RS of CSI reference processes and CSI processes configured with the CSI reference processes is respectively configured as eight, and all are configured with RI feedback and periodic feedback, the terminal determining that the CSI processes and the CSI reference processes have the same feedback mode and/or feedback type;

or

when the number of ports for NZP CSI-RS of CSI processes is respectively configured as eight, and all are configured with RI feedback and CSI reference processes, and a physical uplink control channel (PUCCH) feedback mode is a sub-mode 1 of 1-1 or a PUCCH feedback mode 2-1 or when the number of ports for NZP CSI-RS of CSI processes is respectively as eight, all are configured with RI feedback and CSI reference processes, a PUCCH feedback mode is a sub-mode 1 of 1-1 or a PUCCH feedback mode 2-1, and when collision of RI or PTI sub-frames or RI or PMI0 sub-frames of the CSI processes and the configured CSI reference processes occurs and results in discarding, the terminal determining that the CSI processes and the CSI reference processes have the same feedback mode and/or feedback type;

or

when the terminal is configured as aperiodic feedback, the terminal determining that the configured CSI reference processes are effective to the corresponding CSI processes;

or

when the terminal is configured as aperiodic feedback and the corresponding CSI reference processes are also CSI processes of aperiodic feedback, the terminal determining that the configured CSI reference processes are effective to the corresponding CSI processes;

or

when a CSI process of the terminal is configured with a corresponding CSI reference process and the CSI process is in a feedback mode 2-1, the terminal determining that the CSI reference process and the CSI process have the same feedback mode and/or feedback type;

or

when a CSI process of the terminal is configured with a corresponding CSI reference process and the CSI process is in a sub-mode 1 of a feedback mode 1, the terminal determining that the CSI reference process and the CSI process have the same feedback mode and/or feedback type.

11. The method according to claim 8, wherein,

when collision of the RI, or the RI and PTI, or the RI and PMI0 corresponding to a plurality of CSI processes fed back by the terminal occurs on partial or all sub-frames and results in discarding, calculating the CSI report corresponding to the CSI processes according to the RI, or the RI and PTI, or the RI and PMI0 of the corresponding CSI reference processes comprises:

when the CSI reference processes and non-CSI reference processes feed back that collision of sub-frames of the RI, or the RI and PTI, or the RI and PMI0 of CSI occurs and results in discarding, the terminal preferentially feeding back the RI, or the RI and PTI, or the RI and PMI0 corresponding to the CSI reference processes;

or

when the CSI reference processes and the CSI processes corresponding to the CSI reference processes feed back that collision of sub-frames of the RI, or the RI and PTI, or the RI and PMI0 occurs and results in discarding, the terminal preferentially feeding back the RI, or the RI and PTI, or the RI and PMI0 corresponding to the CSI reference processes;

or

when an index priority of CSI reference processes is lower than that of the CSI processes corresponding to the CSI reference processes, and both feed back that collision of the sub-frames of the RI, the RI and PTI or the RI and PMI0 occurs and results in discarding, the terminal preferentially feeding back the RI, or the RI and PTI, or the RI and PMI0 corresponding to the CSI reference processes, or limiting that an index priority of the CSI reference processes must be higher than that of the CSI processes;

or

when collision of the RI, the RI or PTI, or the RI or PMI0 corresponding to the CSI reference processes with other CSI processes occurs and results in discarding, calculating CSI reports of the CSI reference processes and the CSI processes corresponding to the CSI reference processes according to the RI, or the RI and PTI, or the RI and PMI0 of the last fed-back CSI reference process;

or

when collision of RI sub-frames of the CSI reference processes with RI or PTI joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, the terminal calculating the CSI report of the CSI processes according to the RI of the CSI reference processes and the last fed-back PTI or PTI=0 or PTI=1, and feeding back the RI of the CSI reference processes;

or

when collision of RI sub-frames of the CSI reference processes with RI or PMI0 joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, the terminal calculating the CSI report of the CSI processes according to the RI of the CSI reference processes and the PMI0 last fed back by the CSI processes, and feeding back the RI of the CSI reference processes;

or

when collision of RI or PTI joint coding sub-frames of the CSI reference processes and of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, the terminal calculating the CSI report of the CSI processes according to the RI or PTI of the CSI reference processes, and feeding back the RI or PTI of the CSI reference processes and the calculated CSI report;

or

when collision of RI or PTI joint coding sub-frames of the CSI reference processes and of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, the terminal calculating the CSI report according to the RI of the CSI reference processes and the last fed-back PTI, and feeding back the RI or PTI of the CSI reference processes and the calculated CSI report, the CSI report comprising a PMI and/or a channel quality indicator (CQI);

or

when collision of RI or PMI0 joint coding sub-frames of the CSI reference processes and of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, the terminal calculating the CSI report according to the RI or PMI0 of the CSI reference processes, and feeding back the RI or PMI0 of the CSI reference processes and the calculated CSI report, the CSI report comprising a PMI and/or a CQI;

or

when collision of RI or PTI joint coding sub-frames of the CSI reference processes with RI or PMI0 joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, the terminal calculating the CSI report of the CSI processes according to the RI of the CSI reference processes and the last fed-back PMI0, and feeding back the RI or PTI of the CSI reference processes and the calculated CSI report, the CSI report comprising a PMI and/or a CQI;

or

when collision of RI or PMI0 joint coding sub-frames of the CSI reference processes and of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, the terminal calculating the CSI report of the CSI processes according to the RI of the CSI reference processes and the last fed-back PTI or PTI=0 or PTI=1, and feeding back the RI or PTI of the CSI reference processes and the calculated CSI report;

or

when collision of the RI corresponding to the CSI reference processes with other CSI processes occurs and results in discarding, the terminal calculating and feeding back the CSI report of the CSI reference processes according to the RI of the last fed-back CSI reference process, and calculating and feeding back the CSI report of the CSI processes corresponding to the CSI reference processes according to an RI calculated by a current sub-frame;

or

when collision of the RI corresponding to the CSI reference processes with other CSI processes occurs and results in discarding, the terminal calculating and feeding back CSI of the CSI reference processes according to the RI of the last fed-back CSI reference process or the RI fed back by the CSI processes corresponding to the CSI reference processes.

12. The method according to claim 7, wherein,

when part or all of the CSI processes are configured with the CSI reference processes, the terminal calculating the CSI report of the CSI processes configured with the CSI reference processes according to the RI, or the RI and PTI, or the RI and PMI0 corresponding to the CSI reference processes comprises:

when a CSI process of the terminal is configured with a corresponding CSI reference process, the terminal updating the PMI and the CQI according to the RI of the corresponding CSI reference process;

preferably, wherein,

the terminal updating the PMI and the CQI according to the RI of the corresponding CSI reference process comprises;

the terminal calculating and updating the PMI and the CQI according to the RI fed back by the last CSI reference process on PMI or PMI0 feedback sub-frames of the CSI process;

or

the terminal calculating and updating the PMI and the CQI according to the R1 fed back by the last CSI reference process on RI feedback sub-frames of the CSI process.

10. (canceled)

13. (canceled)

14. A base station, comprising:

a configuration module, set to;

configure a plurality of CSI processes for a terminal, each CSI process at least comprising information of a channel measurement part and information of an interference measurement part; and

a receiving module, set to;

when the base station configures corresponding CSI reference processes for partial or all the CSI processes, at least limit a rank indicator (RI) of the CSI processes for calculating a CSI report to be consistent with an RI of the CSI reference processes by configuring the CSI reference processes; and

for the CSI processes configured with CSI reference processes, according to the RI, or the RI and a precoding type indicator (PTI), or the RI and a precoding matrix indicator (PMI0) corresponding to the CSI reference processes, receive a CSI report of the CSI processes.

15. The base station according to claim 14, wherein,

the receiving module is further set such that:

when collision of the RI, or the RI and PTI, or the RI and PMI0 corresponding to the plurality of CSI processes configured by the base station occurs on partial or all sub-frames and results in discarding, the base station receives the CSI report of the CSI processes according to the RI, or the RI and PTI, or the RI and PMI0 of the CSI reference processes corresponding to the CSI processes.

16. The base station according to claim 14, wherein,

the RI and PTI refers to a configuration situation that the RI and the PTI are transmitted on the same sub-frame;

and the RI and PMI0 refers to a configuration situation that the RI and the PMI0 are jointly encoded on a same sub-frame for transmission;

or, the receiving module is set such that;

when the base station configures a corresponding CSI reference process for a current CSI process, the CSI process is configured with a same feedback mode and/or feedback type as the corresponding CSI reference process;

or

when the base station configures a corresponding CSI reference process and periodic feedback for a current CSI process, the current CSI process is configured with the same feedback mode and/or feedback type as the corresponding CSI reference process;

or

when the base station configures a corresponding CSI reference process for a current CSI process, a number of ports for non-zero power (NZP) channel state information reference signals (CSI-RS) of the CSI process and the corresponding CSI reference process is eight, and both are configured with RI feedback, the current CSI process is configured with the same feedback mode and/or feedback type as the corresponding CSI reference process;

or

when the base station configures a corresponding CSI reference process for a current CSI process, the number of ports for NZP CSI-RS of the CSI process and the CSI reference process is eight, and both are configured with RI feedback and periodic feedback, the current CSI process is configured with the same feedback mode and/or feedback type as the corresponding CSI reference process;

or

when the base station configures a corresponding CSI reference process for a current CSI process, the number of ports for the NZP CSI-RS of the CSI process and the CSI reference process is eight, and both are configured with RI feedback and a sub-mode 1 of a physical uplink control channel (PUCCH) mode 1-1 or a PUCCH mode 2-1 of periodic feedback, the current CSI process is configured with the same feedback mode and/or feedback type as the corresponding CSI reference process;

or

when the base station configures CSI reference processes only for CSI processes configured as aperiodic feedback, the CSI processes configured as aperiodic feedback are configured with the same feedback mode and/or feedback type as the corresponding CSI reference processes;

or

when the base station configures CSI reference processes only for CSI processes configured as aperiodic feedback and the CSI reference processes are also CSI processes of aperiodic feedback, the CSI processes configured as aperiodic feedback are configured with the same feedback mode and/or feedback type as the corresponding CSI reference processes;

or

when the base station configures a corresponding CSI reference process for a current CSI process and the current CSI process is in a feedback mode 2-1, the corresponding CSI reference process is configured with the same feedback mode and feedback type as the current CSI process;

or

when the base station configures a corresponding CSI reference process for a current CSI process and the current CSI process is in a sub-mode 1 of a feedback mode 1, the corresponding CSI reference process is configured with the same feedback mode and feedback type as the current CSI process.

18. The base station according to claim 15, wherein,

the receiving module is further set such that:

when the base station configures the number of ports for the NZP CSI-RS of the CSI processes respectively as eight, all are configured with RI feedback and CSI reference processes, and a PUCCH feedback mode is a sub-mode 1 of 1-1 or a PUCCH feedback mode 2-1;

or when the base station configures the number of ports for the NZP CSI-RS of the CSI processes respectively as eight, all are configured with RI feedback and CSI reference processes, a PUCCH feedback mode is a sub-mode 1 of 1-1 or a PUCCH feedback mode 2-1, and collision of RI or PTI sub-frames of the CSI processes and of the configured CSI reference processes or collision of RI or PMI0 sub-frames of the CSI processes and of the configured CSI reference processes occurs and results in discarding, the base station configures the CSI processes and the corresponding CSI reference processes to have the same feedback mode and/or feedback type;

or

when the base station configures the number of ports for the NZP CSI-RS of the CSI processes respectively as eight and all are configured with RI feedback, CSI reference processes and periodic feedback;

or when the base station configures the number of ports for the NZP CSI-RS of the CSI processes respectively as eight, all are configured with RI feedback, CSI reference processes and periodic feedback, and collision of RI or PTI sub-frames of the CSI processes and of the configured CSI reference processes or collision of RI or PMI0 sub-frames of the CSI process and of the configured CSI reference processes occurs and results in discarding, the base station configures the CSI processes and the corresponding CSI reference processes to have the same feedback mode and/or feedback type.

19. The base station according to claim 15, wherein,

the receiving module is set to:

when the CSI reference processes and non-CSI reference processes feed back that collision of sub-frames of the RI, or the RI and PTI, or the RI and PMI0 of CSI occurs and results in discarding, receive the CSI report of the CSI processes corresponding to the CSI reference processes preferentially according to the RI, or the RI and PTI, or the RI and PMI0 corresponding to the CSI reference processes;

or

when the CSI reference processes and the CSI processes corresponding to the CSI reference processes feed back that collision of sub-frames of the RI, the RI and PTI, or the RI and PMI0 occurs and results in discarding, receive the CSI report of the CSI processes corresponding to the CSI reference processes according to the RI, or the RI and PTI, or the RI and PMI0 corresponding to the CSI reference processes;

or

when an index priority of the CSI reference processes is lower than that of the CSI processes corresponding to the CSI reference processes, and both feed back that collision of sub-frames of the RI, or the RI and PTI, or the RI and PMI0 occurs and results in discarding, receive the CSI report of the CSI processes corresponding to the CSI reference processes according to the RI, or the RI and PTI, or the RI and PMI0 corresponding to the CSI reference processes, or limit that the index priority of the CSI reference processes must be higher than that of the CSI processes corresponding to the CSI reference processes;

or

when collision of the RI, or the PTI and RI, or the RI and PMI0 corresponding to the CSI reference processes with other CSI processes occurs and results in discarding, receive the CSI report of the CSI processes corresponding to the CSI reference processes according to the RI, or RI and PTI, or RI and PMI0 corresponding to the last fed-back CSI reference process;

or

when collision of RI sub-frames of the CSI reference processes with RI or PTI joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, receive the CSI report of the CSI processes corresponding to the CSI reference processes according to the RI of the CSI reference processes and the last fed-back PTI or PTI=0 or PTI=1;

or

when collision of RI sub-frames of the CSI reference processes with RI or PMI0 joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, receive the CSI report of the CSI processes corresponding to the CSI reference processes according to the RI corresponding to the CSI reference processes and the PMI0 last fed-back by the CSI processes;

or

when collision of RI or PTI joint coding sub-frames of the CSI reference processes with RI or PTI joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, receive the CSI report of the CSI processes according to the RI or PTI corresponding to the CSI reference processes;

or

when collision of RI or PTI joint coding sub-frames of the CSI reference processes with RI or PTI joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, receive the CSI report of the CSI processes according to the RI corresponding to the CSI reference processes and the last fed-back PTI, the CSI report comprising a PMI and/or a channel quality indicator (CQI);

or

when collision of RI or PMI0 joint coding sub-frames of the CSI reference processes with RI or PMI0 joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, receive the CSI report of the CSI processes according to the RI or the CQI corresponding to the CSI reference processes, the CSI report comprising a PMI and/or a CQI;

or

when collision of RI or PTI joint coding sub-frames of the CSI reference processes with RI or PMI0 joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, receive the CSI report of the CSI processes according to the RI corresponding to the CSI reference processes and the last fed-back PMI0, the CSI report comprising a PMI and/or a CQI;

or

when collision of RI or PMI0 joint coding sub-frames of the CSI reference processes with RI or PMI0 joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, receive the CSI report of the CSI processes according to the RI corresponding to the CSI reference processes and the last fed-back PTI or PTI=0 or PTI=1;

or

when collision of the RI corresponding to the CSI reference processes with other CSI processes occurs and results in discarding, receive the CSI report of the CSI reference processes according to the RI corresponding to the last fed-back CSI reference process, and receive the CSI report of the CSI processes according to an RI calculated by a current sub-frame;

or

when collision of the RI corresponding to the CSI reference processes with other CSI processes occurs and results in discarding, receive the CSI report of the CSI reference processes according to the RI corresponding to the last fed-back CSI reference process or the RI fed back by the CSI processes corresponding to the CSI reference processes.

17. (canceled)

20. A terminal, comprising:

an acquisition module, set to;

acquire CSI processes from a base station; and

a calculation module, set such that;

when part or all of the CSI processes acquired by the acquisition module are configured with CSI reference processes, the terminal calculates a CSI report of the CSI processes configured with the CSI reference processes according to a rank indicator (RI), or the RI and a precoding type indicator (PTI), or the RI and a precoding matrix indicator (PMI0) corresponding to the CSI reference processes.

21. The terminal according to claim 20, wherein,

the calculation module is further set to:

when collision of the RI, or the RI and PTI, or the RI and PMI0 corresponding to a plurality of CSI processes fed back by the terminal occurs on partial or all sub-frames and results in discarding, calculate the CSI report corresponding to the CSI processes according to the RI, or the RI and PTI, or the RI and PMI0 corresponding to the CSI reference processes.

22. The terminal according to claim 20, wherein,

the CSI report comprises one or more of the following contents:

PMI, CQI, PMI0 and PMI1,

or, the calculation module is further set such that;

when a CSI process of the terminal is configured with a corresponding CSI reference process, the terminal determines that the CSI process and the CSI reference process have a same feedback mode and/or feedback type;

or

when a CSI process of the terminal is configured with a corresponding CSI reference process and periodic feedback, the terminal determines that the CSI process and the CSI reference process have the same feedback mode and/or feedback type;

or

when a number of ports for non-zero power (NZP) channel state information reference signals (CSI-RS) of CSI reference processes and CSI processes configured with the CSI reference processes is respectively configured as eight, and all are configured with RI feedback, the terminal determines that the CSI processes and the CSI reference processes have the same feedback mode and/or feedback type;

or

when the number of ports for NZP CSI-RS of CSI reference processes and CSI processes configured with the CSI reference processes is respectively configured as eight, and all are configured with RI feedback and periodic feedback, the terminal determines that the CSI processes and the CSI reference processes have the same feedback mode and/or feedback type;

or

when the number of ports for NZP CSI-RS of CSI processes is respectively configured as eight, all are configured with RI feedback and CSI reference processes, and a PUCCH feedback mode is a sub-mode 1 of 1-1 or a PUCCH feedback mode 2-1;

or when the number of ports for NZP CSI-RS of CSI processes is respectively configured as eight, all are configured with RI feedback and CSI reference processes, a PUCCH feedback mode is a sub-mode 1 of 1-1 or a PUCCH feedback mode 2-1, and when collision of RI or PTI sub-frames or collision of RI or PMI0 sub-frames of the CSI processes and of the configured CSI reference processes occurs and results in discarding, the terminal determines that the CSI processes and the CSI reference processes have the same feedback mode and/or feedback type;

or

when the terminal is configured as aperiodic feedback, the terminal determines that the configured CSI reference processes are effective to the corresponding CSI processes;

or

when the terminal is configured as aperiodic feedback and the corresponding CSI reference processes are also CSI processes of aperiodic feedback, the terminal determines that the configured CSI reference processes are effective to the corresponding CSI processes;

or

when a CSI process of the terminal is configured with a corresponding CSI reference process and the CSI process is in a feedback mode 2-1, the terminal determines that the CSI reference process and the CSI process have the same feedback mode and/or feedback type;

or

when a CSI process of the terminal is configured with a corresponding CSI reference process and the CSI process is in a sub-mode 1 of a feedback mode 1, the terminal determines that the CSI reference process and the CSI process have the same feedback mode and/or feedback type.

24. The terminal according to claim 22, wherein,

the calculation module is set to:

when sub-frames for feeding back the RI, or the RI and PTI, or the RI and PMI0 of CSI of the CSI reference processes and non-CSI reference processes collide and result in discarding, preferentially feed back the RI, or the RI and PTI, or the RI and PMI0 corresponding to the CSI reference processes;

or

when sub-frames for feeding back the RI, or the RI and PTI, or the RI and PMI0 of CSI of the CSI reference processes and the CSI processes corresponding to the CSI reference processes collide and result in discarding, preferentially feed back the RI, or the RI and PTI, or the RI and PMI0 corresponding to the CSI reference processes;

or

when an index priority of the CSI reference processes is lower than that of the CSI processes corresponding to the CSI reference processes, and the sub-frames for feeding back the RI, the RI and PTI, or the RI and PMI0 of the CSI reference processes and the CSI processes collide and result in discarding, preferentially feed back the RI, or the RI and PTI, or the RI and PMI0 corresponding to the CSI reference processes, or limit that the index priority of the CSI reference processes must be higher than that of the CSI processes;

or

when collision of the RI, the RI or PTI, or the RI or PMI0 corresponding to the CSI reference processes with other CSI processes occurs and results in discarding, calculate CSI reports of the CSI reference processes and the CSI processes corresponding to the CSI reference processes according to the RI, or the RI and PTI, or the RI and PMI0 of the last fed-back CSI reference process;

or

when collision of RI sub-frames of the CSI reference processes with RI or PTI joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, calculate the CSI report of the CSI processes according to the RI of the CSI reference processes and the last fed-back PTI or PTI=0 or PTI=1, and feed back the RI of the CSI reference processes;

or

when collision of RI sub-frames of the CSI reference processes with RI or PMI0 joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, calculate the CSI report of the CSI processes according to the RI of the CSI reference processes and the PMI0 last fed-back by the CSI processes, and feed back the RI of the CSI reference processes;

or

when collision of RI or PTI joint coding sub-frames of the CSI reference processes and of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, calculate the CSI report of the CSI processes according to the RI or the PTI of the CSI reference processes, and feed back the RI or the PTI of the CSI reference processes and the calculated CSI report;

or

when collision of RI or PTI joint coding sub-frames of the CSI reference processes and of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, calculate the CSI report according to the RI of the CSI reference processes and the last fed-back PTI, and feed back the RI or the PTI of the CSI reference processes, and the calculated CSI report, the CSI report comprising a PMI and/or a channel quality indicator (CQI);

or

when collision of RI or PMI0 joint coding sub-frames of the CSI reference processes and of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, calculate the CSI report according to the RI or the PMI0 of the CSI reference processes, and feed back the RI or the PMI0 of the CSI reference processes and the calculated CSI report, the CSI report comprising a PMI and/or a CQI;

or

when collision of RI or PTI joint coding sub-frames of the CSI reference processes with RI or PMI0 joint coding sub-frames of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, calculate the CSI report of the CSI processes according to the RI of the CSI reference processes and the last fed-back PMI0, and feed back the RI or the PTI of the CSI reference processes and the calculated CSI report, the CSI report comprising a PMI and/or a CQI;

or

when collision of RI or PMI0 joint coding sub-frames of the CSI reference processes and of the CSI processes corresponding to the CSI reference processes occurs and results in discarding, calculate the CSI report of the CSI processes according to the RI of the CSI reference processes and the last fed-back PTI or PTI=0 or PTI=1, and feed back the RI or the PTI of the CSI reference processes and the calculated CSI report;

or

when collision of the RI corresponding to the CSI reference processes with other CSI processes occurs and results in discarding, calculate and feed back the CSI report of the CSI reference processes according to the last fed-back RI of the CSI reference processes, and calculate and feed back the CSI report of the CSI processes corresponding to the CSI reference processes according to an RI calculated by a current sub-frame;

or

when collision of the RI corresponding to the CSI reference processes with other CSI processes occurs and results in discarding, calculate and feed back the CSI of the CSI reference processes according to the last fed-back RI of the CSI reference processes or the RI fed back by the CSI processes corresponding to the CSI reference processes.

25. The terminal according to claim 20, wherein,

the calculation module is set to, when a CSI process of the terminal is configured with a corresponding CSI reference process, update the PMI and the CQI according to the RI of the corresponding CSI reference process;

preferably, the calculation module is set to;

calculate and update the PMI and the CQI according to the RI fed back by the last CSI reference process on PMI or PMI0 feedback sub-frames of the CSI process;

or calculate and update the PMI and the CQI according to the R1 fed back by the last CSI reference process on RI feedback sub-frames of the CSI process.

23. (canceled)

26. (canceled)