WO2017020730A1 - 一种反馈和接收信道状态信息csi的方法及装置 - Google Patents

一种反馈和接收信道状态信息csi的方法及装置 Download PDF

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Publication number
WO2017020730A1
WO2017020730A1 PCT/CN2016/090874 CN2016090874W WO2017020730A1 WO 2017020730 A1 WO2017020730 A1 WO 2017020730A1 CN 2016090874 W CN2016090874 W CN 2016090874W WO 2017020730 A1 WO2017020730 A1 WO 2017020730A1
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Prior art keywords
csi feedback
feedback configuration
csi
base station
location information
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PCT/CN2016/090874
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English (en)
French (fr)
Inventor
陈文洪
陈山枝
高秋彬
陈润华
拉盖施
李辉
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电信科学技术研究院
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Priority to EP16832218.8A priority Critical patent/EP3331181B1/en
Priority to US15/749,122 priority patent/US10396875B2/en
Publication of WO2017020730A1 publication Critical patent/WO2017020730A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0645—Variable feedback
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI

Definitions

  • the present application relates to the field of wireless communications technologies, and in particular, to a method and apparatus for feeding back and receiving channel state information CSI.
  • the base station antenna arrays are generally horizontally arranged as shown in FIGS. 1 and 2.
  • the base station transmitter beam can only be adjusted in the horizontal direction and in the vertical direction is a fixed downtilt angle. Therefore, various beamforming/precoding techniques and the like are performed based on the horizontal channel information.
  • the wireless signal is three-dimensionally propagated in space, the method of fixing the downtilt angle does not optimize the performance of the system.
  • Vertical beam adjustment is very important for reducing inter-cell interference and improving system performance.
  • the signal transmitted by the base station to the user equipment can be shaped not only in the horizontal direction but also in the vertical direction.
  • the UE In order to enable the Evolved NodeB (eNB) to determine the vertical direction of the shaped vector so that the vertical direction beam can be aligned with the UE to obtain the maximum shaping gain, the UE usually needs to feed back the channel state information in the vertical direction (Channel State Information, CSI).
  • the specific implementation manner is to configure multiple CSI feedback configurations for the UE. Different CSI feedback configurations adopt different vertical beamforming vectors, and the UE performs CSI measurement and feedback based on the configured CSI feedback configuration.
  • the CSI generally includes a Rank Indication (RI), a Precoding Matrix Indicator (PMI), and a Channel Quality Indication (CQI).
  • RI Rank Indication
  • PMI Precoding Matrix Indicator
  • CQI Channel Quality Indication
  • the base station determines N non-zero power (NZP) channel state information reference signal (CSI-RS) resources, and the number of ports of each CSI-RS resource is the same as the number of antenna unit groups, and each Each port of the CSI-RS resource corresponds to a group of antenna units, for example, the first port corresponds to the first column of vertical antennas, the second port corresponds to the second column of vertical antennas, and so on.
  • the base station determines a beamforming weight vector for each CSI-RS resource, and the beamforming weight vector can be determined by the vertical angle to be covered by the CSI-RS resource.
  • the pilot signal is weighted by the beamforming vector and the corresponding one from the port Issued on the group antenna unit.
  • each set of antenna elements is used to transmit pilot signals for one port of the CSI-RS resource.
  • the pilot signal s n (i) of the i-th port is weighted by the beamforming weighting vector [w n (0) w n (1) w n (2) w n (3)] T from the ith antenna, That is, the i-th column antenna is emitted.
  • the subscript n in the figure is used to distinguish CSI-RS resources.
  • the UE may perform measurement based on the three sets of CSI-RS resources, and report the CSI measured on the CSI-RS resource with the best channel quality, and the location information of the CSI-RS resource in all configured CSI-RS resources.
  • the base station can obtain the current optimal vertical shaping weight vector according to the position information, thereby performing vertical shaping of the data.
  • Each CSI process can be configured with one NZP CSI-RS configuration and one Interference Measurement Resource (IMR).
  • the UE performs channel measurement based on the NZP CSI-RS and performs interference measurement with the corresponding IMR to obtain and feedback.
  • the corresponding CSI for each process.
  • a maximum of three CSI processes can be configured for each LTE UE for CSI feedback.
  • the CSI feedback of the UE may be a periodic physical uplink control channel (PUCCH) feedback or a non-period physical uplink shared channel (PUSCH) feedback.
  • PUCCH physical uplink control channel
  • PUSCH non-period physical uplink shared channel
  • the base station configures periodic PUCCH resources, and the UE periodically reports the corresponding CSI on the configured resources.
  • the base station triggers the CSI feedback by using the Downlink Control Information (DCI), and the UE performs CSI feedback on the PUSCH in the uplink subframe corresponding to the trigger subframe.
  • DCI Downlink Control Information
  • the base station may trigger the UE to report the CSI corresponding to each CSI process in a certain CSI process set.
  • the CSI process set is pre-configured to the UE through the high layer signaling, and the triggering process is implemented by using the DCI.
  • the UE may also feed back CSIs corresponding to multiple CSI-RSs after different vertical shaping vectors.
  • the method of reporting the location information and the CSI to the base station by using different feedback modes is not supported, and the method for triggering the UE to feed back the CSI feedback configuration of the specified CSI feedback configuration by the base station is not supported, which is disadvantageous to the base station. More flexible downstream scheduling and transmission.
  • the present application provides a method and apparatus for feeding back and receiving channel state information CSI, which can support location information and independent reporting of corresponding CSI, thereby improving the detection performance of the information.
  • the present application further provides a method for a user equipment UE to feed back channel state information, including:
  • each CSI feedback configuration group includes at least one CSI feedback configuration, where the CSI feedback configuration is a downlink signal configuration for downlink CSI measurement and feedback;
  • the CSI obtained by the first CSI feedback configuration is reported to the base station by using the physical uplink control channel PUCCH or the physical uplink shared channel (PUSCH), and the first CSI feedback is configured as the location of the UE according to the recently reported CSI feedback configuration.
  • the information or the location information of the CSI feedback configuration indicated by the base station is configured from the CSI feedback configuration determined in the corresponding CSI feedback configuration group.
  • the CSI feedback is configured as a CSI process, or is configured for a non-zero power channel state information reference signal NPZ CSI-RS, or is configured for an interference measurement resource IMR.
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the CSI feedback configuration that the UE recently reports through the physical uplink control channel PUCCH; or
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the CSI feedback configuration that the UE recently reports through the physical uplink shared channel PUSCH; or
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the recently reported CSI feedback configuration in the location information configured by the CSI feedback reported by the PUCCH and the PUSCH.
  • the location information of the recently reported CSI feedback configuration is specifically:
  • the recently reported CSI feedback is configured in the index of the CSI feedback configuration group in which it is located;
  • a sequence of locations corresponding to the feedback configuration group in which the recently reported CSI feedback configuration is configured wherein one CSI feedback configuration group corresponds to one location sequence, and each CSI feedback configuration in the CSI feedback configuration group corresponds to a bit in the sequence of locations, recently reported When the bit in the position sequence corresponding to the CSI feedback configuration to be reported is configured as a preset value, the sequence is reported to the base station.
  • the location information of the CSI feedback configuration indicated by the base station is specifically:
  • the index of the CSI feedback configuration in the CSI feedback configuration group in which it is located is located.
  • a sequence of locations corresponding to the CSI feedback configuration group in which the CSI feedback configuration is configured where one CSI feedback configuration group corresponds to one location sequence, and each CSI feedback configuration in the CSI feedback configuration group corresponds to one bit in the location sequence, and the base station indicates After the bit in the position sequence corresponding to the CSI feedback configuration to be reported is configured as a preset value, the sequence of the position is sent to the UE.
  • the location information of the CSI feedback configuration indicated by the base station is determined by:
  • the location information of the CSI feedback configuration indicated by the base station is determined by the aperiodic CSI trigger signaling or the high layer signaling sent by the base station.
  • the method further comprises:
  • Receiving downlink control signaling sent by the base station where the downlink control signaling is used to indicate that the first CSI feedback configuration is determined based on the location information of the recently reported CSI feedback configuration, or the first CSI is determined according to the location information of the CSI feedback configuration indicated by the base station. Feedback configuration.
  • the application also provides a method for a base station to receive channel state information CSI, including:
  • each CSI The feedback configuration group includes at least one CSI feedback configuration configured as a downlink signal configuration for downlink CSI measurement and feedback;
  • the first CSI feedback is configured as location information configured by the UE according to the recently reported CSI feedback or CSI indicated by the base station.
  • the configured location information is fed back from the CSI feedback configuration determined in the corresponding CSI feedback configuration group.
  • the CSI feedback is configured as a CSI process, or is configured for a non-zero power channel state information reference signal NPZ CSI-RS, or is configured for an interference measurement resource IMR.
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the CSI feedback configured by the UE recently reported by the PUCCH; or
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the CSI feedback configured by the UE recently reported by the PUSCH; or
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the recently reported CSI feedback configuration in the location information configured by the CSI feedback reported by the PUCCH and the PUSCH.
  • the method further comprises:
  • downlink control signaling where the downlink control signaling is used to indicate that the UE determines the first CSI feedback configuration based on the location information of the recently reported CSI feedback configuration, or determines the first CSI according to the location information of the CSI feedback configuration indicated by the base station. Feedback configuration.
  • the application further provides a user equipment UE, including:
  • a configuration determining unit configured to determine, according to an indication of the base station, at least one CSI feedback configuration group configured by the base station, where each CSI feedback configuration group includes at least one CSI feedback configuration, where the CSI feedback is configured as a downlink signal for downlink CSI measurement and feedback Configuration
  • the CSI reporting unit is configured to report the CSI obtained by using the first CSI feedback configuration to the base station by using a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUCCH), where the first CSI feedback is configured according to the latest report.
  • the location information of the CSI feedback configuration or the location information of the CSI feedback configuration indicated by the base station is configured from the CSI feedback configuration determined in the corresponding CSI feedback configuration group.
  • the CSI feedback is configured as a CSI process, or is configured for a non-zero power channel state information reference signal NPZ CSI-RS, or is configured for an interference measurement resource IMR.
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the CSI feedback configuration that the UE recently reports through the physical uplink control channel PUCCH; or
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the CSI feedback configuration that the UE recently reports through the physical uplink shared channel PUSCH; or
  • the first CSI feedback is configured as a location information configured by the UE through CSI feedback reported by the PUCCH and the PUSCH.
  • the CSI feedback configuration corresponding to the location information of the recently reported CSI feedback configuration.
  • the location information of the recently reported CSI feedback configuration is specifically:
  • the recently reported CSI feedback is configured in the index of the CSI feedback configuration group in which it is located;
  • a sequence of locations corresponding to the feedback configuration group in which the recently reported CSI feedback configuration is configured wherein one CSI feedback configuration group corresponds to one location sequence, and each CSI feedback configuration in the CSI feedback configuration group corresponds to a bit in the sequence of locations, recently reported When the bit in the position sequence corresponding to the CSI feedback configuration to be reported is configured as a preset value, the sequence is reported to the base station.
  • the location information of the recently reported CSI feedback configuration is specifically:
  • the recently reported CSI feedback is configured in the index of the CSI feedback configuration group in which it is located;
  • a sequence of locations corresponding to the feedback configuration group in which the recently reported CSI feedback configuration is configured wherein one CSI feedback configuration group corresponds to one location sequence, and each CSI feedback configuration in the CSI feedback configuration group corresponds to a bit in the sequence of locations, recently reported When the bit in the position sequence corresponding to the CSI feedback configuration to be reported is configured as a preset value, the sequence is reported to the base station.
  • the configuration determining unit determines location information of the CSI feedback configuration indicated by the base station by:
  • the location information of the CSI feedback configuration indicated by the base station is determined by the aperiodic CSI trigger signaling or the high layer signaling sent by the base station.
  • the UE further includes:
  • the signaling receiving unit is configured to receive downlink control signaling sent by the base station, where the downlink control signaling is used to indicate that the first CSI feedback configuration is determined based on the location information of the recently reported CSI feedback configuration, or according to the CSI feedback configuration indicated by the base station.
  • the location information determines the first CSI feedback configuration.
  • the application also provides a base station, including:
  • a configuration unit configured to configure at least one channel state information CSI feedback configuration group for the user equipment UE and indicate to the UE, where each CSI feedback configuration group includes at least one CSI feedback configuration, where the CSI feedback is configured for downlink CSI measurement and feedback Downlink signal configuration;
  • the CSI receiving unit is configured to receive the CSI obtained by the UE according to the first CSI feedback configuration reported by the physical uplink control channel PUCCH or the physical uplink shared channel PUSCH, where the first CSI feedback configuration is configured by the UE according to the recently reported CSI feedback configuration.
  • the information or the location information of the CSI feedback configuration indicated by the base station is configured from the CSI feedback configuration determined in the corresponding CSI feedback configuration group.
  • the CSI feedback is configured as a CSI process, or is configured for a non-zero power channel state information reference signal NPZ CSI-RS, or is configured for an interference measurement resource IMR.
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the CSI feedback configured by the UE recently reported by the PUCCH; or
  • the first CSI feedback configuration is corresponding to the location information of the CSI feedback configuration that the UE recently reports through the PUSCH.
  • CSI feedback configuration or
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the recently reported CSI feedback configuration in the location information configured by the CSI feedback reported by the PUCCH and the PUSCH.
  • the indication unit is configured to send downlink control signaling to the UE, where the downlink control signaling is used to indicate that the UE determines the first CSI feedback configuration based on the location information of the recently reported CSI feedback configuration, or according to the CSI feedback indicated by the base station.
  • the configured location information determines a first CSI feedback configuration.
  • the application can support the location information and the independent reporting of the corresponding CSI, thereby improving the detection performance of the information
  • the UE can perform CSI reporting based on the CSI feedback configuration specified by the base station, so that the base station can obtain the CSI corresponding to the non-optimal CSI feedback configuration, and perform more flexible downlink scheduling and transmission.
  • FIG. 1 is a schematic diagram of a horizontally arranged dual-polarized antenna in the prior art
  • FIG. 2 is a schematic diagram of a horizontal array antenna in the prior art
  • 3a is a schematic diagram of a dual-polarized antenna arranged horizontally and vertically in two dimensions in the prior art
  • FIG. 3b is a schematic diagram of an array antenna arranged horizontally and vertically in two dimensions in the prior art
  • FIG. 4 is a schematic diagram of transmitting CSI-RS by using multiple CSI-RS antenna ports in the prior art
  • FIG. 5 is a flowchart of a UE feedback CSI method according to an embodiment of the present disclosure
  • FIG. 6 is a flowchart of a method for receiving, by a base station, a CSI according to an embodiment of the present disclosure
  • FIG. 7 is a schematic structural diagram of a UE according to an embodiment of the present application.
  • FIG. 8 is a structural diagram of a UE according to another embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present application.
  • FIG. 10 is a structural diagram of a base station according to another embodiment of the present application.
  • the present application provides a method for a UE to feed back channel state information. As shown in FIG. 5, the method includes the following steps:
  • Step 501 Determine, according to an indication of the base station, at least one CSI feedback configuration group configured by the base station, where each CSI feedback configuration group includes at least one CSI feedback configuration, where the CSI feedback is configured as a downlink signal configuration for downlink CSI measurement and feedback;
  • the base station may configure one or more CSI feedback configuration groups, and each CSI feedback configuration group includes one or more CSI feedback configurations.
  • the CSI feedback is configured as a CSI process, or is configured for a non-zero power channel state information reference signal NPZ CSI-RS, or is configured for an interference measurement resource IMR. Therefore, the CSI feedback configuration group may include any combination of the above CSI feedback configurations.
  • the CSI feedback configuration group may include multiple NZP CSI-RS configurations and one IMR configuration.
  • One CSI process corresponds to at least one NZP CSI-RS configuration and one interferometric resource IMR.
  • one CSI feedback configuration may also be other downlink reference signals and/or downlink measurement resource configurations for downlink CSI measurement and feedback.
  • One CSI feedback configuration includes at least one NZP CSI-RS configuration.
  • the NZP CSI-RSs configured in different CSI feedback configurations use different shaping vectors for beamforming.
  • the CSI feedback configuration group may further include related configuration information common to the multiple CSIs.
  • the base station configures a CSI feedback configuration group
  • the CSI feedback configuration group may include multiple CSI processes or multiple NZP CSI-RSs.
  • a CSI feedback configuration group may include related configuration information common to multiple CSI feedback configurations in addition to multiple CSI feedback configurations.
  • multiple NZP CSI-RS configurations may be included, as well as one IMR configuration that is commonly associated with all NZP CSI-RS configurations.
  • the base station can configure three CSI feedback configuration groups, and each CSI feedback configuration group includes four NZP CSI-RS configurations, and can also include one IMR configuration that they are associated with.
  • the base station may send the high layer signaling to the UE, and the UE determines at least one CSI feedback configuration group configured by the base station according to the high layer signaling sent by the base station.
  • Step 502 When it is determined that the CSI needs to be reported, the CSI obtained by using the first CSI feedback configuration is reported to the base station by using the physical uplink control channel PUCCH or the physical uplink shared channel (PUCCH), and the first CSI feedback is configured as the CSI feedback of the UE according to the latest report.
  • the configured location information or the location information of the CSI feedback configuration indicated by the base station is configured from the CSI feedback configuration determined in the corresponding CSI feedback configuration group.
  • the UE when determining that the CSI needs to be reported, determines which CSI feedback configuration CSI needs to be reported according to the location information of the recently reported CSI feedback configuration or the CSI feedback configuration location information indicated by the base station, because the base station has a corresponding location.
  • the information is not required to report the location information of the first CSI feedback configuration when the UE reports the CSI obtained by the first CSI feedback configuration to the base station.
  • the embodiment of the present application can support the independent reporting of the location information and the corresponding CSI, so as to improve the detection performance of the information.
  • the UE can perform CSI reporting based on the CSI feedback configuration specified by the base station, so that the base station can obtain a non-optimal CSI feedback configuration.
  • CSI for more flexible downstream scheduling and transmission.
  • the embodiment of the present application does not limit which CSI feedback configuration location information is reported by the UE and how to report these locations.
  • the UE may adopt a periodic reporting manner, and when the setting period is reached, The location information of the at least one CSI feedback configuration in the CSI feedback configuration group is reported by the PUCCH, and the location information of the reported CSI feedback configuration may be the location of the CSI feedback configuration corresponding to one or more CSIs in the CSI feedback configuration group.
  • the information may also be used to configure the location information of each CSI feedback configuration in the CSI feedback group.
  • the corresponding CSI may be reported at the same time or the CSI may not be reported.
  • the UE may also adopt a non-periodic reporting manner, and when receiving the aperiodic CSI feedback triggering command sent by the base station, report the location of the at least one CSI feedback configuration in the CSI feedback configuration group by using the PUSCH.
  • the location information of the CSI feedback configuration of the CSI feedback configuration group may be the location information of the CSI feedback configuration corresponding to one or more CSIs in the CSI feedback configuration group, or may be configured for each CSI feedback in the CSI feedback configuration group. location information.
  • the corresponding CSI may be reported at the same time or the CSI may not be reported.
  • the first CSI feedback configuration may be determined in any of the following manners:
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the CSI feedback configuration that the UE recently reports through the physical uplink control channel PUCCH;
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the CSI feedback configuration that the UE recently reports through the physical uplink shared channel PUSCH;
  • the first CSI feedback configuration is the CSI feedback configuration corresponding to the location information of the CSI feedback configuration that is recently reported by the UE through the CSI feedback reported by the PUCCH and the PUSCH, that is, if the CSI feedback configuration is reported by the UE through the PUCCH.
  • the location information of the CSI feedback configuration is also determined by the location information of the CSI feedback reported by the PUSCH, and the location information of the CSI feedback configuration that is reported by the channel is determined when the first CSI feedback configuration is determined. .
  • the base station can configure the feedback configuration group for the UE in a certain order, such as sending an index of the CSI feedback configuration in the CSI feedback configuration group at a time, so that the UE can determine which CSI feedback configurations belong to the same CSI feedback configuration group.
  • the method for determining, by the UE, the first CSI feedback configuration from the CSI feedback configuration group according to the location information is as follows:
  • the UE configures the corresponding CSI feedback configuration in the feedback configuration group as the first CSI feedback configuration
  • the UE determines the CSI feedback configuration corresponding to the bit having a value of 1 in the sequence of locations as the first CSI feedback configuration.
  • the location information of the CSI feedback configuration recently reported by the UE is specifically:
  • the recently reported CSI feedback is configured in the index of the CSI feedback configuration group in which it is located;
  • a sequence of locations corresponding to the feedback configuration group in which the recently reported CSI feedback configuration is located wherein one CSI feedback configuration group corresponds to one location sequence, and each CSI feedback configuration in the CSI feedback configuration group corresponds to one of the sequence of locations
  • the bit is reported to the base station when the bit in the position sequence corresponding to the CSI feedback configuration to be reported is configured as a preset value.
  • the location information of the CSI feedback configuration indicated by the base station is specifically:
  • the index of the CSI feedback configuration in the CSI feedback configuration group in which it is located is located.
  • a sequence of locations corresponding to the CSI feedback configuration group in which the CSI feedback configuration is configured where one CSI feedback configuration group corresponds to one location sequence, and each CSI feedback configuration in the CSI feedback configuration group corresponds to one bit in the location sequence, and the base station indicates After the bit in the position sequence corresponding to the CSI feedback configuration to be reported is configured as a preset value, the sequence of the position is sent to the UE.
  • the CSI feedback configuration is determined from the corresponding CSI feedback configuration group according to the location information of the CSI feedback configuration indicated by the base station, and specifically includes:
  • the location information of the CSI feedback configuration indicated by the base station is an index of the CSI feedback configuration group in which the CSI feedback is configured, and the CSI feedback configuration is determined from the corresponding CSI feedback configuration group according to the index; the base station may trigger by using the aperiodic CSI feedback.
  • the signaling carries the location information. For example, if the CSI feedback configuration group configured by the base station includes four CSI-RS resources, the location information is index information of the target CSI-RS resource in four resources. The location information needs to occupy 2 bits.
  • the location information of the CSI feedback configuration indicated by the base station is a location sequence corresponding to the CSI feedback configuration group, and the CSI feedback configuration is determined from the corresponding CSI feedback configuration group according to the value of each bit in the location sequence, where one CSI feedback
  • the configuration group corresponds to a sequence of locations
  • each CSI feedback configuration in the CSI feedback configuration group corresponds to one bit in the sequence of locations.
  • the base station may indicate the location information in advance through high layer signaling; generally, the base station may indicate location information for each of the pre-configured CSI feedback configuration groups. For example, for each CSI process (including 4 CSI-RS resources) configured by the base station, the base station may indicate location information of 4 bits, and indicate the location of the CSI-RS resource in which the CSI needs to be fed back in a bitmap manner.
  • the first CSI feedback configuration may be one or more CSI feedback configurations in the CSI feedback configuration group.
  • the location information of the CSI feedback configuration indicated by the base station is determined by the aperiodic CSI trigger signaling or the high layer signaling sent by the base station.
  • the CSI needs to be reported in any of the following manners:
  • the location information of the CSI feedback configuration may be reported in a non-periodic reporting manner.
  • the non-periodic CSI feedback triggering instruction is used to trigger the reporting of the CSI feedback configuration, and then perform CSI measurement based on the CSI feedback configuration, and feed back the CSI information corresponding to the recently reported location information when the CSI feedback configuration command is received next time.
  • the CSI information of the CSI feedback configuration may be periodically reported, and the CSI measurement is performed based on the CSI feedback configuration after each report, and the CSI information corresponding to the recently reported location information is fed back when the next set period is reached.
  • the UE feedback CSI method provided by the embodiment of the present application is preferably applied to a Full-Dimension Multiple Input Multiple Output (FDMIMO) system.
  • FDMIMO Full-Dimension Multiple Input Multiple Output
  • the embodiment of the application further includes the following steps:
  • step 502 determining, according to the downlink control signaling, whether the first CSI feedback configuration is determined based on the location information of the recently reported CSI feedback configuration, or determining the first CSI feedback configuration according to the location information of the CSI feedback configuration indicated by the base station.
  • the base station can indicate which type of location information the UE uses in the DCI through additional 1-bit signaling.
  • the present application provides a method for a base station to receive channel state information CSI, as shown in FIG. 6, including:
  • Step 601 Configure at least one channel state information CSI feedback configuration group for the user equipment UE and indicate to the UE, where each CSI feedback configuration group includes at least one CSI feedback configuration, where the CSI feedback is configured as a downlink for downlink CSI measurement and feedback.
  • Signal configuration
  • the base station may configure one or more CSI feedback configuration groups, and each CSI feedback configuration group includes one or more CSI feedback configurations.
  • the CSI feedback is configured as a CSI process, or is configured for a non-zero power channel state information reference signal NPZ CSI-RS, or is configured for an interference measurement resource IMR. Therefore, the CSI feedback configuration group may include any combination of the above CSI feedback configurations.
  • the CSI feedback configuration group may include multiple NZP CSI-RS configurations and one IMR configuration.
  • One CSI process corresponds to at least one NZP CSI-RS configuration and one interferometric resource IMR.
  • one CSI feedback configuration may also be other downlink reference signals and/or downlink measurement resource configurations for downlink CSI measurement and feedback.
  • One CSI feedback configuration includes at least one NZP CSI-RS configuration.
  • the NZP CSI-RSs configured in different CSI feedback configurations use different shaping vectors for beamforming.
  • the CSI feedback configuration group may further include related configuration information common to the multiple CSIs.
  • the base station configures a CSI feedback configuration group
  • the CSI feedback configuration group may include multiple CSI processes or multiple NZP CSI-RSs.
  • a CSI feedback configuration group may include other configuration information common to multiple CSI feedback configurations in addition to multiple CSI feedback configurations. For example, it may contain multiple NZP CSI-RS configurations, and one IMR configuration that is commonly associated with all NZP CSI-RS configurations.
  • the base station can configure three CSI feedback configuration groups, and each CSI feedback configuration group includes four NZP CSI-RS configurations, and can also include one IMR configuration that they are associated with.
  • the base station may send the high layer signaling to the UE, and the UE determines at least one CSI feedback configuration group configured by the base station according to the high layer signaling sent by the base station.
  • the base station may configure one CSI feedback configuration group for each carrier, or may configure one same CSI feedback configuration group for all carriers.
  • Step 602 Receive CSI obtained by the UE according to the first CSI feedback configuration reported by the physical uplink control channel PUCCH or the physical uplink shared channel PUSCH, where the first CSI feedback is configured as location information or a base station configured by the UE according to the recently reported CSI feedback.
  • the location information of the indicated CSI feedback configuration is determined from the CSI feedback configuration determined in the corresponding CSI feedback configuration group.
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the CSI feedback configured by the UE recently reported by the PUCCH; or
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the CSI feedback configured by the UE recently reported by the PUSCH; or
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the recently reported CSI feedback configuration in the location information configured by the CSI feedback reported by the PUCCH and the PUSCH.
  • the method further includes: transmitting downlink control signaling to the UE, where the downlink control signaling is used to indicate that the UE determines the first CSI feedback configuration based on the location information of the recently reported CSI feedback configuration, or is configured according to the CSI feedback indicated by the base station.
  • the location information determines a first CSI feedback configuration.
  • the base station may trigger the UE to perform CSI feedback in a triggering manner.
  • the aperiodic CSI feedback triggering instruction may be sent to the UE, and the location information of the CSI fed back by the UE is received, and then the aperiodic CSI feedback triggering instruction is sent. Receiving CSI of corresponding location information fed back by the UE.
  • the embodiment of the present application provides a channel state information CSI feedback and receiving method applied to an FD MIMO system.
  • the UE After the base station triggers the CSI feedback, the UE performs a CSI feedback configuration corresponding to the recently reported location information, or is based on a CSI specified by the base station. The feedback configuration is performed and the corresponding CSI is reported.
  • the aperiodic CSI feedback can use the location information reported by the periodic CSI feedback to perform CSI measurement and reporting, so that the aperiodic CSI reporting based on the best beam can be supported without significantly modifying the current aperiodic CSI feedback mechanism.
  • the mechanism can support the independent reporting of location information and corresponding CSI, thereby improving the detection performance of the information
  • the UE can perform CSI reporting based on the CSI feedback configuration specified by the base station, so that the base station can obtain the CSI corresponding to the non-optimal CSI feedback configuration, and perform more flexible downlink scheduling and transmission.
  • the aperiodic CSI feedback trigger instruction triggering mode is adopted, and the UE performs the aperiodic CSI according to the base station.
  • the feedback triggering instruction first reports the location information of the CSI feedback configuration, and then performs CSI measurement based on the CSI feedback configuration corresponding to the reported location information, and reports the CSI of the corresponding location information when the acyclic CSI feedback triggering instruction is received next time.
  • the specific steps are as follows: :
  • the base station indicates, by higher layer signaling, a CSI process used by the UE for aperiodic CSI feedback.
  • the CSI process includes four CSI-RS resource configurations and one IMR configuration.
  • the base station triggers the UE to perform aperiodic CSI feedback through the downlink DCI, so that the UE feeds back the location information of the optimal CSI-RS resource;
  • the UE reports to the base station the index of the optimal CSI-RS resource configuration in all configurations in the four CSI-RS resource configurations included in the CSI process.
  • the optimal CSI-RS resource configuration is determined by performing Reference Signal Received Power (RSRP) measurement on each CSI-RS resource, and the UE selects a CSI-RS resource with the largest RSRP value.
  • RSRP Reference Signal Received Power
  • the UE performs CSI measurement based on the selected optimal CSI-RS resource
  • the base station triggers the UE to perform aperiodic CSI feedback through the downlink DCI, so that the UE feeds back the CSI obtained by the CSI-RS resource corresponding to the previously reported location information;
  • the UE selects the optimal CSI corresponding to the CSI-RS resource in all the CSI-RS resources included in the CSI process based on the index of the CSI feedback configuration reported in the step 3).
  • the CSI obtained by the RS resource is reported to the base station through the PUSCH.
  • the non-periodic CSI feedback triggering instruction is used to trigger the CSI feedback configuration, and the CSI measurement configuration is performed on the CSI feedback configuration corresponding to the reported location information.
  • the specific steps are as follows:
  • the base station indicates, by the high layer signaling, the CSI process used by the UE for aperiodic CSI feedback.
  • the CSI process includes four CSI-RS resource configurations and one IMR configuration.
  • the UE reports to the base station the index of the optimal CSI-RS resource configuration in all configurations in the CSI-RS resource configuration included in the CSI process by the PUCCH.
  • the optimal CSI-RS resource configuration is determined by estimating the downlink channel capacity corresponding to each CSI-RS resource, and the UE selects the CSI-RS resource corresponding to the largest channel capacity.
  • the UE performs CSI measurement based on the selected optimal CSI-RS resource
  • the base station triggers the UE to perform aperiodic CSI feedback through the downlink DCI;
  • the UE obtains the CSI-RS resource corresponding to the selected CSI-RS resource, that is, the selected optimal CSI-RS resource, in all the CSI-RS resources included in the CSI process, based on the index reported in the step 2).
  • the CSI is reported to the base station through the PUSCH.
  • the aperiodic CSI feedback trigger instruction triggering mode is adopted, and the UE performs the aperiodic CSI according to the base station.
  • the CSI feedback configuration is determined by the base station, and the CSI feedback configuration is performed.
  • the CSI measurement is performed based on the CSI feedback configuration corresponding to the location information indicated by the base station, and the CSI corresponding to the location information is reported after the measurement is completed.
  • the base station indicates, by the high layer signaling, the CSI process group used by the UE for aperiodic CSI feedback.
  • the CSI process group includes four CSI processes, and each CSI process includes one CSI-RS resource configuration and one IMR configuration.
  • the base station triggers the UE to perform aperiodic CSI feedback through the downlink DCI.
  • the base station indicates, by using 2-bit information, the index of the CSI process that requires the UE to feed back the CSI in all the configured four CSI processes. This information is location information.
  • the UE After receiving the trigger signaling, the UE performs CSI measurement on the corresponding CSI process in all the configured four CSI processes based on the index. Specifically, the UE performs CSI measurement in the two CSI-RS resource periods after the triggering;
  • the UE reports the CSI obtained based on the CSI process to the base station through the PUSCH.
  • a UE that feeds back CSI and a base station that receives CSI are also provided in the embodiment of the present application. Since the principle of solving the problem is similar to the method of feedback and receiving CSI, the implementation of the device may refer to the method. The implementation, repetitions will not be repeated.
  • the application provides a user equipment UE, as shown in FIG. 7, including:
  • the configuration determining unit 701 is configured to determine, according to an indication of the base station, at least one CSI feedback configuration group configured by the base station, where each CSI feedback configuration group includes at least one CSI feedback configuration, where the CSI feedback configuration is used for downlink CSI measurement and feedback downlink Signal configuration
  • the CSI reporting unit 702 is configured to report the CSI obtained by using the first CSI feedback configuration to the base station by using the physical uplink control channel (PUCCH) or the physical uplink shared channel (PUCCH), where the first CSI feedback is configured as the UE according to the latest
  • the location information of the reported CSI feedback configuration or the location information of the CSI feedback configuration indicated by the base station is configured from the CSI feedback configuration determined in the corresponding CSI feedback configuration group.
  • the CSI feedback is configured as a CSI process, or is configured for a non-zero power channel state information reference signal NPZ CSI-RS, or is configured for an interference measurement resource IMR.
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the CSI feedback configuration that the UE recently reports through the physical uplink control channel PUCCH; or
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the CSI feedback configuration that the UE recently reports through the physical uplink shared channel PUSCH; or
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the recently reported CSI feedback configuration in the location information configured by the CSI feedback reported by the PUCCH and the PUSCH.
  • the location information of the recently reported CSI feedback configuration is specifically:
  • the recently reported CSI feedback is configured in the index of the CSI feedback configuration group in which it is located;
  • the sequence of locations corresponding to the feedback configuration group in which the recently reported CSI feedback configuration is located one of which is a CSI feedback configuration.
  • the group corresponds to a sequence of positions, and each CSI feedback configuration in the CSI feedback configuration group corresponds to a bit in the sequence of positions, and the bit in the position sequence corresponding to the CSI feedback configuration to be reported is configured as a preset value when the report is recently reported. Then, the sequence of the location is reported to the base station.
  • the configuration determining unit determines location information of the CSI feedback configuration indicated by the base station by:
  • the location information of the CSI feedback configuration indicated by the base station is determined by the aperiodic CSI trigger signaling or the high layer signaling sent by the base station.
  • the UE further includes:
  • the signaling receiving unit is configured to receive downlink control signaling sent by the base station, where the downlink control signaling is used to indicate that the first CSI feedback configuration is determined based on the location information of the recently reported CSI feedback configuration, or according to the CSI feedback configuration indicated by the base station.
  • the location information determines the first CSI feedback configuration.
  • the embodiment of the present application further provides a user equipment UE, as shown in FIG. 8, including a processor 800, a transceiver 810, and a memory 820, where:
  • the processor 800 is configured to read a program in the memory 820 and perform the following process:
  • each CSI feedback configuration group includes at least one CSI feedback configuration, where the CSI feedback is configured as a downlink signal configuration for downlink CSI measurement and feedback; determining that the CSI needs to be reported
  • the CSI obtained by the first CSI feedback configuration is reported to the base station by using the physical uplink control channel (PUCCH) or the physical uplink shared channel (PUC), and the first CSI feedback is configured as the location of the UE according to the recently reported CSI feedback configuration.
  • the transceiver 810 is configured to receive and transmit data under the control of the processor 800.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 800 and various circuits of memory represented by memory 820.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 810 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 830 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 can store data used by the processor 600 in performing operations.
  • the embodiment of the present application further provides a base station, as shown in FIG. 9, including:
  • the configuration unit 901 is configured to configure at least one channel state information CSI feedback configuration group for the user equipment UE and indicate to the UE, where each CSI feedback configuration group includes at least one CSI feedback configuration, where the CSI feedback is configured for downlink CSI measurement and Feedback downlink signal configuration;
  • the CSI receiving unit 902 is configured to receive the CSI obtained by the UE according to the first CSI feedback configuration that is reported by the UE by using the physical uplink control channel PUCCH or the physical uplink shared channel PUSCH, where the first CSI feedback configuration is configured by the UE according to the recently reported CSI feedback.
  • the location information or the location information of the CSI feedback configuration indicated by the base station is configured from the CSI feedback configuration determined in the corresponding CSI feedback configuration group.
  • the CSI feedback is configured as a CSI process, or is configured for a non-zero power channel state information reference signal NPZ CSI-RS, or is configured for an interference measurement resource IMR.
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the CSI feedback configured by the UE recently reported by the PUCCH; or
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the CSI feedback configured by the UE recently reported by the PUSCH; or
  • the first CSI feedback configuration is a CSI feedback configuration corresponding to the location information of the recently reported CSI feedback configuration in the location information configured by the CSI feedback reported by the PUCCH and the PUSCH.
  • the base station further includes:
  • the indication unit is configured to send downlink control signaling to the UE, where the downlink control signaling is used to indicate that the UE determines the first CSI feedback configuration based on the location information of the recently reported CSI feedback configuration, or the location configured according to the CSI feedback indicated by the base station The information determines a first CSI feedback configuration.
  • the embodiment of the present application further provides a base station, as shown in FIG. 10, including a processor 100, a transceiver 110, and a memory 120, where:
  • the processor 100 is configured to read a program in the memory 120 and perform the following process:
  • each CSI feedback configuration group including at least one CSI feedback configuration, the CSI feedback configured for downlink CSI measurement and feedback Downlink signal configuration;
  • the transceiver 110 Receiving, by the transceiver 110, the CSI obtained by the UE according to the first CSI feedback configuration reported by the physical uplink control channel PUCCH or the physical uplink shared channel PUSCH, where the first CSI feedback is configured as location information of the UE according to the recently reported CSI feedback or The location information of the CSI feedback configuration indicated by the base station, and the CSI feedback configuration determined from the corresponding CSI feedback configuration group;
  • the transceiver 110 is configured to receive and transmit data under the control of the processor 100.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 100 and various circuits of memory represented by memory 120.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 110 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 100 is responsible for managing the bus architecture and the usual processing, and the memory 120 can store the processor 100 in execution. The data used in the row operation.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本申请提供一种反馈和接收CSI的方法及装置，其中UE反馈CSI的方法包括：根据基站的指示确定基站配置的至少一个CSI反馈配置组，每个CSI反馈配置组包括至少一个CSI反馈配置；确定需要上报CSI时，通过PUCCH或PUSCH将基于第一CSI反馈配置获得的CSI上报给基站，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置。本申请支持位置信息和相应CSI的独立上报，从而提高这些信息的检测性能，还支持基站获得指定CSI反馈配置对应的CSI，进行更灵活的下行调度和传输。

Description

一种反馈和接收信道状态信息CSI的方法及装置
本申请要求在2015年7月31日提交中国专利局、申请号为201510463618.6、发明名称为“一种反馈和接收信道状态信息CSI的方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信技术领域，尤其涉及一种反馈和接收信道状态信息CSI的方法及装置。
背景技术
在现有蜂窝系统中，基站天线阵列一般呈水平排列，如图1和图2所示。基站发射端波束仅能在水平方向进行调整，而在垂直方向上是固定的下倾角，因此各种波束赋形/预编码技术等均是基于水平方向信道信息进行的。事实上，由于无线信号在空间中是三维传播的，固定下倾角的方法不能使系统的性能达到最优。垂直方向的波束调整对于降低小区间干扰，提高系统性能有着很重要的意义。
随着天线技术的发展，业界已出现能够对每个天线阵子独立控制的有源天线，如图3a和图3b所示。采用这种天线阵列，使得波束在垂直方向的动态调整成为可能。
在这种三维天线阵列下，基站向用户设备(User Equipment，UE)发送的信号不仅可以在水平方向进行赋形，还可以在垂直方向进行赋形。为了使演进基站(Evolved NodeB，eNB)确定垂直方向的赋形向量使垂直方向的波束能够对准UE，从而获得最大的赋形增益，通常需要UE反馈垂直方向的信道状态信息(Channel State Information，CSI)。具体实现方式是给UE配置多个CSI反馈配置，不同的CSI反馈配置采用不同的垂直波束赋形向量，而UE基于配置的CSI反馈配置进行CSI测量并反馈。这里CSI一般包括秩指示(Rank Indication，RI)、预编码矩阵指示(Precoding Matrix Indicator，PMI)、信道质量指示(Channel Quality Indication，CQI)。
具体步骤介绍如下：
首先，基站确定N个非零功率(NZP)信道状态信息测量参考信号(Channel State Information Reference Signal，CSI-RS)资源，每个CSI-RS资源的端口数目和天线单元组数相同，并且每个CSI-RS资源的每个端口对应一组天线单元，如第一个端口对应第一列垂直天线，第二个端口对应第二列垂直天线，以此类推。基站为每个CSI-RS资源确定一个波束赋形加权向量，波束赋形加权向量可以由该CSI-RS资源要覆盖的垂直角度确定。对于该CSI-RS资源的每个端口，其导频信号经该波束赋形向量加权后从该端口对应的一 组天线单元上发出。
以图4为例，共有16个天线单元，垂直方向上的4个天线单元分为一组，每组4个天线单元，共有4组。每一组天线单元用于发送CSI-RS资源的一个端口的导频信号。第i个端口的导频信号sn(i)用波束赋形加权向量[wn(0) wn(1) wn(2) wn(3)]T加权后从第i组天线，即第i列天线上发出。图中的下标n用于区分CSI-RS资源。若基站配置了3个CSI-RS资源，每个CSI-RS资源的波束方向不同，则需配置3组不同的波束赋形加权向量[wn(0) wn(1) wn(2) wn(3)]T，n＝0,1,2。UE可以基于这三组CSI-RS资源分别进行测量，上报其中信道质量最好的CSI-RS资源上测量得到的CSI，以及该CSI-RS资源在所有配置的CSI-RS资源中的位置信息。基站可以根据该位置信息得到当前最佳的垂直赋形加权向量，从而进行数据的垂直赋形。
在长期演进(Long Term Evolution，LTE)系统中为了支持协作多点(Coordinated Multiple Points，CoMP)，引入了CSI进程的概念。每个CSI进程可以对应一个NZP CSI-RS配置和一个干涉测量资源(Interference Measurement Resource，IMR)配置，UE基于其中的NZP CSI-RS进行信道测量，并用相应的IMR进行干扰测量，从而得到并反馈每个进程相应的CSI。每个LTE UE最多可以配置3个CSI进程用于CSI反馈。UE的CSI反馈可以采用周期的物理上行控制信道(Physical Uplink Control Channel，PUCCH)反馈，或者非周期的物理上行共享信道(Physical Uplink Shared Channel，PUSCH)反馈。在周期CSI反馈中，基站配置周期性的PUCCH资源，UE在配置的资源上周期性上报相应的CSI。在非周期CSI反馈中，基站通过下行控制信息(Downlink Control Information，DCI)触发UE进行CSI反馈，UE在触发子帧对应的上行子帧中的PUSCH上进行CSI反馈。对于非周期反馈，基站可以触发UE上报某个CSI进程集合中的每个CSI进程对应的CSI。其中，CSI进程集合通过高层信令预先配置给UE，而触发过程通过DCI来实现。通过配置多个CSI进程集合，也可以让UE反馈不同的垂直赋形向量赋形后的多个CSI-RS对应的CSI。
在已有的方案中，不支持将位置信息与CSI分别通过不同的反馈方式上报给基站的方式，也不支持基站通过触发信令触发UE反馈指定CSI反馈配置的CSI的上报方式，不利于基站进行更灵活的下行调度和传输。
发明内容
本申请提供一种反馈和接收信道状态信息CSI的方法及装置，可以支持位置信息和相应CSI的独立上报，从而提高这些信息的检测性能。
本申请还提供一种用户设备UE反馈信道状态信息的方法，包括：
根据基站的指示确定基站配置的至少一个CSI反馈配置组，每个CSI反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；
确定需要上报CSI时，通过物理上行控制信道PUCCH或物理上行共享信道PUSCH将基于第一CSI反馈配置获得的CSI上报给基站，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置。
优选地，所述CSI反馈配置为CSI进程，或为非零功率信道状态信息参考信号NPZ CSI-RS配置，或为干扰测量资源IMR配置。
优选地，所述第一CSI反馈配置为UE最近通过物理上行控制信道PUCCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
所述第一CSI反馈配置为UE最近通过物理上行共享信道PUSCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
所述第一CSI反馈配置为UE通过PUCCH和PUSCH上报的CSI反馈配置的位置信息中，最近上报的CSI反馈配置的位置信息对应的CSI反馈配置。
优选地，最近上报的CSI反馈配置的位置信息具体为：
最近上报的各CSI反馈配置在其所在的CSI反馈配置组的索引；或者
最近上报的CSI反馈配置所在的反馈配置组对应的位置序列，其中一个CSI反馈配置组对应一个位置序列，该CSI反馈配置组中的每个CSI反馈配置对应该位置序列中的一个比特，最近上报时是将需上报的CSI反馈配置对应的位置序列中的比特配置为预设值后，将该位置序列上报给基站。
优选地，基站指示的CSI反馈配置的位置信息具体为：
CSI反馈配置在其所在的CSI反馈配置组中的索引；或者
CSI反馈配置所在的CSI反馈配置组对应的位置序列，其中一个CSI反馈配置组对应一个位置序列，该CSI反馈配置组中的每个CSI反馈配置对应该位置序列中的一个比特，基站在指示时将需上报的CSI反馈配置对应的位置序列中的比特配置为预设值后，将该位置序列发送给UE。
优选地，通过如下方式确定基站指示的CSI反馈配置的位置信息：
通过基站发送的非周期CSI触发信令或高层信令，确定基站指示的CSI反馈配置的位置信息。
优选地，该方法还包括：
接收基站发送的下行控制信令，所述下行控制信令用于指示基于最近上报的CSI反馈配置的位置信息确定第一CSI反馈配置，或者根据基站指示的CSI反馈配置的位置信息确定第一CSI反馈配置。
本申请还提供一种基站接收信道状态信息CSI的方法，包括：
为用户设备UE配置至少一个信道状态信息CSI反馈配置组并指示给UE，每个CSI 反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；
接收UE通过物理上行控制信道PUCCH或物理上行共享信道PUSCH上报的基于第一CSI反馈配置获得的CSI，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置。
优选地，所述CSI反馈配置为CSI进程，或为非零功率信道状态信息参考信号NPZ CSI-RS配置，或为干扰测量资源IMR配置。
优选地，所述第一CSI反馈配置为UE最近通过PUCCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
所述第一CSI反馈配置为UE最近通过PUSCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
所述第一CSI反馈配置为UE通过PUCCH和PUSCH上报的CSI反馈配置的位置信息中，最近上报的CSI反馈配置的位置信息对应的CSI反馈配置。
优选地，该方法还包括：
向UE发送下行控制信令，所述下行控制信令用于指示UE基于最近上报的CSI反馈配置的位置信息确定第一CSI反馈配置，或者根据基站指示的CSI反馈配置的位置信息确定第一CSI反馈配置。
本申请还提供一种用户设备UE，包括：
配置确定单元，用于根据基站的指示确定基站配置的至少一个CSI反馈配置组，每个CSI反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；
CSI上报单元，用于确定需要上报CSI时，通过物理上行控制信道PUCCH或物理上行共享信道PUSCH将基于第一CSI反馈配置获得的CSI上报给基站，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置。
优选地，所述CSI反馈配置为CSI进程，或为非零功率信道状态信息参考信号NPZ CSI-RS配置，或为干扰测量资源IMR配置。
优选地，所述第一CSI反馈配置为UE最近通过物理上行控制信道PUCCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
所述第一CSI反馈配置为UE最近通过物理上行共享信道PUSCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
所述第一CSI反馈配置为UE通过PUCCH和PUSCH上报的CSI反馈配置的位置信 息中，最近上报的CSI反馈配置的位置信息对应的CSI反馈配置。
优选地，最近上报的CSI反馈配置的位置信息具体为：
最近上报的各CSI反馈配置在其所在的CSI反馈配置组的索引；或者
最近上报的CSI反馈配置所在的反馈配置组对应的位置序列，其中一个CSI反馈配置组对应一个位置序列，该CSI反馈配置组中的每个CSI反馈配置对应该位置序列中的一个比特，最近上报时是将需上报的CSI反馈配置对应的位置序列中的比特配置为预设值后，将该位置序列上报给基站。
优选地，最近上报的CSI反馈配置的位置信息具体为：
最近上报的各CSI反馈配置在其所在的CSI反馈配置组的索引；或者
最近上报的CSI反馈配置所在的反馈配置组对应的位置序列，其中一个CSI反馈配置组对应一个位置序列，该CSI反馈配置组中的每个CSI反馈配置对应该位置序列中的一个比特，最近上报时是将需上报的CSI反馈配置对应的位置序列中的比特配置为预设值后，将该位置序列上报给基站。
优选地，所述配置确定单元通过如下方式确定基站指示的CSI反馈配置的位置信息：
通过基站发送的非周期CSI触发信令或高层信令，确定基站指示的CSI反馈配置的位置信息。
优选地，该UE还包括：
信令接收单元，用于接收基站发送的下行控制信令，所述下行控制信令用于指示基于最近上报的CSI反馈配置的位置信息确定第一CSI反馈配置，或者根据基站指示的CSI反馈配置的位置信息确定第一CSI反馈配置。
本申请还提供一种基站，包括：
配置单元，用于为用户设备UE配置至少一个信道状态信息CSI反馈配置组并指示给UE，每个CSI反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；
CSI接收单元，用于接收UE通过物理上行控制信道PUCCH或物理上行共享信道PUSCH上报的基于第一CSI反馈配置获得的CSI，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置。
优选地，所述CSI反馈配置为CSI进程，或为非零功率信道状态信息参考信号NPZ CSI-RS配置，或为干扰测量资源IMR配置。
优选地，所述第一CSI反馈配置为UE最近通过PUCCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
所述第一CSI反馈配置为UE最近通过PUSCH上报的CSI反馈配置的位置信息对应 的CSI反馈配置；或者
所述第一CSI反馈配置为UE通过PUCCH和PUSCH上报的CSI反馈配置的位置信息中，最近上报的CSI反馈配置的位置信息对应的CSI反馈配置。
优选地，指示单元，用于向UE发送下行控制信令，所述下行控制信令用于指示UE基于最近上报的CSI反馈配置的位置信息确定第一CSI反馈配置，或者根据基站指示的CSI反馈配置的位置信息确定第一CSI反馈配置。
利用本申请提供的反馈和接收信道状态信息CSI的方法及装置，具有以下有益效果：
本申请可以支持位置信息和相应CSI的独立上报，从而提高这些信息的检测性能；
UE可以基于基站指定的CSI反馈配置进行CSI上报，从而令基站可以获得非最佳的CSI反馈配置对应的CSI，进行更灵活的下行调度和传输。
附图说明
图1为现有技术中水平排列双极化天线示意图；
图2为现有技术中水平排列阵列天线示意图；
图3a为现有技术中水平和垂直二维排列的双极化天线示意图；
图3b为现有技术中水平和垂直二维排列的阵列天线示意图；
图4为现有技术中采用多个CSI-RS天线端口发送CSI-RS示意图；
图5为本申请实施例提供的UE反馈CSI方法流程图；
图6为本申请实施例提供的基站接收CSI方法流程图；
图7为本申请实施例提供的UE结构示意图；
图8为本申请另一实施例提供的UE结构图；
图9为本申请实施例提供的基站结构示意图；
图10为本申请另一实施例提供的基站结构图。
具体实施方式
下面结合附图和实施例对本申请提供的接收和反馈CSI的方法及装置进行更详细地说明。
本申请提供一种UE反馈信道状态信息的方法，如图5所示，该方法包括以下步骤：
步骤501，根据基站的指示确定基站配置的至少一个CSI反馈配置组，每个CSI反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；
基站可以配置一个或者多个CSI反馈配置组，每个CSI反馈配置组包括一个或多个CSI反馈配置。
具体的，CSI反馈配置为CSI进程，或为非零功率信道状态信息参考信号NPZ CSI-RS配置，或为干扰测量资源IMR配置。因此，CSI反馈配置组可以包含以上CSI反馈配置的任意组合，比如，CSI反馈配置组可以包含多个NZP CSI-RS配置和一个IMR配置。
一个CSI进程对应至少一个NZP CSI-RS配置和一个干涉测量资源IMR。
当然，一个CSI反馈配置也可以是其他用于下行CSI测量和反馈的下行参考信号和/或下行测量资源配置。
一个CSI反馈配置包含至少一个NZP CSI-RS配置，优选地，不同CSI反馈配置中所配置的NZP CSI-RS采用不同的赋形向量进行波束赋形。
一个CSI反馈配置组包括多个CSI反馈配置时，该CSI反馈配置组还可以包括所述多个CSI共同的相关配置信息。
具体举例：
举例1，基站配置一个CSI反馈配置组，该CSI反馈配置组可以包含多个CSI进程或者多个NZP CSI-RS。一个CSI反馈配置组除了包含多个CSI反馈配置外，还可以包含多个CSI反馈配置共同的相关配置信息。例如，可以包含多个NZP CSI-RS配置，以及所有NZP CSI-RS配置共同关联的一个IMR配置。
举例2，基站可以配置三个CSI反馈配置组，每个CSI反馈配置组包含四个NZP CSI-RS配置，还可以包含他们共同关联的一个IMR配置。
基站可以向UE发送高层信令，UE根据基站发送的高层信令，确定基站配置的至少一个CSI反馈配置组。
步骤502，确定需要上报CSI时，通过物理上行控制信道PUCCH或物理上行共享信道PUSCH将基于第一CSI反馈配置获得的CSI上报给基站，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置。
本申请实施例在确定需要上报CSI时，UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，确定需要上报哪些CSI反馈配置的CSI，由于基站已有相应的位置信息，因此UE将基于第一CSI反馈配置获得的CSI上报给基站时，不需要上报第一CSI反馈配置的位置信息。
本申请实施例可以支持位置信息和相应CSI的独立上报，从而提高这些信息的检测性能；UE可以基于基站指定的CSI反馈配置进行CSI上报，从而令基站可以获得非最佳的CSI反馈配置对应的CSI，进行更灵活的下行调度和传输。
本申请实施例对UE上报哪些CSI反馈配置的位置信息及采用什么样的方式上报这些位置不作限定。
优选地，对于每个CSI反馈配置组，UE可以采用周期性上报方式，到达设定周期时， 通过PUCCH上报该CSI反馈配置组中至少一个CSI反馈配置的位置信息，所上报的CSI反馈配置的位置信息，可以为CSI反馈配置组中最优的一个或多个CSI对应的CSI反馈配置的位置信息，也可以为CSI反馈配置组中每个CSI反馈配置的位置信息。另外，在上报这些位置信息时，可以同时上报对应的CSI也可以不上报CSI。
和/或，对于每个CSI反馈配置组，UE还可以采用非周期上报方式，接收到基站发送的非周期CSI反馈触发指令时，通过PUSCH上报该CSI反馈配置组中至少一个CSI反馈配置的位置信息，所上报的CSI反馈配置的位置信息，可以为CSI反馈配置组中最优的一个或多个CSI对应的CSI反馈配置的位置信息，也可以为CSI反馈配置组中每个CSI反馈配置的位置信息。另外，在上报这些位置信息时，可以同时上报对应的CSI也可以不上报CSI。
优选地，步骤501中，第一CSI反馈配置可以采用如下任一方式确定：
1)第一CSI反馈配置为UE最近通过物理上行控制信道PUCCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；
2)第一CSI反馈配置为UE最近通过物理上行共享信道PUSCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；
3)第一CSI反馈配置为UE通过PUCCH和PUSCH上报的CSI反馈配置的位置信息中，最近上报的CSI反馈配置的位置信息对应的CSI反馈配置，即如果在UE既通过PUCCH上报的CSI反馈配置的位置信息，也通过PUSCH上报的CSI反馈配置的位置信息时，需要确定第一CSI反馈配置时，哪个信道上报的CSI反馈配置的位置信息是最近上报的，则采用该CSI反馈配置的位置信息。
对于第一种情况，基站可以按照一定顺序为UE配置反馈配置组，如一次发送一个CSI反馈配置组中CSI反馈配置的索引，从而使UE可以确定哪些CSI反馈配置属于同一个CSI反馈配置组。
基于不同的位置信息定义方法，UE根据位置信息从CSI反馈配置组中确定第一CSI反馈配置的方法如下：
i，如果位置信息定义为CSI反馈配置在一个CSI反馈配置组中的索引，则UE将该索引在反馈配置组中对应的CSI反馈配置作为第一CSI反馈配置；
ii，如果位置信息定义为一组位置序列，则UE将该位置序列中值为1的比特对应的CSI反馈配置确定为第一CSI反馈配置。
优选地，步骤502中，UE最近上报的CSI反馈配置的位置信息具体为：
最近上报的各CSI反馈配置在其所在的CSI反馈配置组的索引；或者
最近上报的CSI反馈配置所在的反馈配置组对应的位置序列，其中一个CSI反馈配置组对应一个位置序列，该CSI反馈配置组中的每个CSI反馈配置对应该位置序列中的一个 比特，最近上报时是将需上报的CSI反馈配置对应的位置序列中的比特配置为预设值后，将该位置序列上报给基站。
优选地，基站指示的CSI反馈配置的位置信息具体为：
CSI反馈配置在其所在的CSI反馈配置组中的索引；或者
CSI反馈配置所在的CSI反馈配置组对应的位置序列，其中一个CSI反馈配置组对应一个位置序列，该CSI反馈配置组中的每个CSI反馈配置对应该位置序列中的一个比特，基站在指示时将需上报的CSI反馈配置对应的位置序列中的比特配置为预设值后，将该位置序列发送给UE。
优选地，步骤502中，根据基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定CSI反馈配置，具体包括：
基站指示的CSI反馈配置的位置信息为CSI反馈配置在其所在的CSI反馈配置组中的索引，则根据该索引从对应的CSI反馈配置组中确定CSI反馈配置；基站可以通过非周期CSI反馈触发信令携带所述位置信息，例如，基站预先配置的CSI反馈配置组中包含4个CSI-RS资源，则所述位置信息为目标CSI-RS资源在4个资源中的索引信息，此时所述位置信息需要占用2个比特。
或者，基站指示的CSI反馈配置的位置信息为与CSI反馈配置组对应的位置序列，则根据位置序列中各比特的取值，从对应的CSI反馈配置组中确定CSI反馈配置，其中一个CSI反馈配置组对应一个位置序列，该CSI反馈配置组中的每个CSI反馈配置对应该位置序列中的一个比特。基站可以预先通过高层信令指示该位置信息；一般地，基站可以为每个预先配置的CSI反馈配置组分别指示位置信息。例如，对于基站配置的每个CSI进程(包含4个CSI-RS资源)，基站可以指示4个比特的位置信息，采用bitmap的方式指示其中需要反馈CSI的CSI-RS资源的位置。
其中，所述第一CSI反馈配置可以是所述CSI反馈配置组中的一个或者多个CSI反馈配置。
优选地，步骤501中，通过基站发送的非周期CSI触发信令或高层信令，确定基站指示的CSI反馈配置的位置信息。
优选地，步骤502中，可以采用如下任一方式确定需要上报CSI：
1)收到基站发送的非周期CSI反馈触发指令时，确定需要上报CSI；
具体可以采用非周期上报方式上报CSI反馈配置的位置信息。
采用非周期CSI反馈触发指令，先触发CSI反馈配置的位置信息的上报，然后基于CSI反馈配置进行CSI测量，待下次接收到CSI反馈配置指令时反馈最近上报的位置信息对应的CSI信息。
2)确定到达设定周期时，确定需要上报CSI。
可以周期性上报CSI反馈配置的位置信息，每次上报后基于CSI反馈配置进行CSI测量，待到达下一设定周期时反馈最近上报的位置信息对应的CSI信息。
本申请实施例提供的UE反馈CSI的方法优选应用于全维多输入多输出(Full-Dimension Multiple Input Multiple Output，FDMIMO)系统。
优选地，本申请实施例在确定第一CSI反馈配置之前，还包括以下步骤：
接收基站发送的下行控制信令，该下行控制信令用于指示基于最近上报的CSI反馈配置的位置信息确定第一CSI反馈配置，或者根据基站指示的CSI反馈配置的位置信息确定第一CSI反馈配置；
则步骤502中，根据该下行控制信令确定是基于最近上报的CSI反馈配置的位置信息确定第一CSI反馈配置，还是根据基站指示的CSI反馈配置的位置信息确定第一CSI反馈配置。
例如，基站可以在DCI中通过额外的1比特信令指示UE采用哪一种位置信息。
对于网络侧，本申请提供一种基站接收信道状态信息CSI的方法，如图6所示，包括：
步骤601，为用户设备UE配置至少一个信道状态信息CSI反馈配置组并指示给UE，每个CSI反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；
基站可以配置一个或者多个CSI反馈配置组，每个CSI反馈配置组包括一个或多个CSI反馈配置。
具体的，CSI反馈配置为CSI进程，或为非零功率信道状态信息参考信号NPZ CSI-RS配置，或为干扰测量资源IMR配置。因此，CSI反馈配置组可以包含以上CSI反馈配置的任意组合，比如，CSI反馈配置组可以包含多个NZP CSI-RS配置和一个IMR配置。
一个CSI进程对应至少一个NZP CSI-RS配置和一个干涉测量资源IMR。
当然，一个CSI反馈配置也可以是其他用于下行CSI测量和反馈的下行参考信号和/或下行测量资源配置。
一个CSI反馈配置包含至少一个NZP CSI-RS配置，优选地，不同CSI反馈配置中所配置的NZP CSI-RS采用不同的赋形向量进行波束赋形。
一个CSI反馈配置组包括多个CSI反馈配置时，该CSI反馈配置组还可以包括所述多个CSI共同的相关配置信息。
具体举例：
举例1，基站配置一个CSI反馈配置组，该CSI反馈配置组可以包含多个CSI进程或者多个NZP CSI-RS。一个CSI反馈配置组除了包含多个CSI反馈配置外，还可以包含多个CSI反馈配置共同的其他配置信息。例如，可以包含多个NZP CSI-RS配置，以及所有NZP CSI-RS配置共同关联的一个IMR配置
举例2，基站可以配置三个CSI反馈配置组，每个CSI反馈配置组包含四个NZP CSI-RS配置，还可以包含他们共同关联的一个IMR配置。
基站可以向UE发送高层信令，UE根据基站发送的高层信令，确定基站配置的至少一个CSI反馈配置组。
多载波情况下，基站可以为每个载波配置一个CSI反馈配置组，也可以为所有载波配置一个相同的CSI反馈配置组。
步骤602，接收UE通过物理上行控制信道PUCCH或物理上行共享信道PUSCH上报的基于第一CSI反馈配置获得的CSI，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置。
优选地，所述第一CSI反馈配置为UE最近通过PUCCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
所述第一CSI反馈配置为UE最近通过PUSCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
所述第一CSI反馈配置为UE通过PUCCH和PUSCH上报的CSI反馈配置的位置信息中，最近上报的CSI反馈配置的位置信息对应的CSI反馈配置。
优选地，还包括：向UE发送下行控制信令，所述下行控制信令用于指示UE基于最近上报的CSI反馈配置的位置信息确定第一CSI反馈配置，或者根据基站指示的CSI反馈配置的位置信息确定第一CSI反馈配置。
基站可以采用触发的方式触发UE进行CSI反馈，例如对于非周期触发方式，可以向UE发送非周期CSI反馈触发指令，先接收UE反馈的CSI的位置信息，然后再发送非周期CSI反馈触发指令，接收UE反馈的相应位置信息的CSI。
本申请实施例给出了一种应用于FDMIMO系统的信道状态信息CSI反馈和接收方法，基站触发UE进行CSI反馈后，UE基于最近上报的位置信息对应的CSI反馈配置，或者基于基站指定的CSI反馈配置，进行相应CSI上报。
非周期CSI反馈可以利用周期CSI反馈上报的位置信息进行CSI测量和上报，从而不需要明显修改当前的非周期CSI反馈机制就可以支持基于最佳波束的非周期CSI上报。
该机制可以支持位置信息和相应CSI的独立上报，从而提高这些信息的检测性能；
UE可以基于基站指定的CSI反馈配置进行CSI上报，从而令基站可以获得非最佳的CSI反馈配置对应的CSI，进行更灵活的下行调度和传输。
下面给出本申请提供的CSI反馈和接收方法的优选实施例。
实施例1
本实施例中采用非周期CSI反馈触发指令触发方式，UE根据基站发送的非周期CSI 反馈触发指令，先上报CSI反馈配置的位置信息，之后基于上报的位置信息对应的CSI反馈配置进行CSI测量，下次收到非周期CSI反馈触发指令时，上报对应位置信息的CSI，具体步骤如下：
1)基站通过高层信令指示UE用于非周期CSI反馈的一个CSI进程。其中，该CSI进程包含4个CSI-RS资源配置和一个IMR配置。
2)在子帧n，基站通过下行DCI触发UE进行非周期CSI反馈，令UE反馈最优CSI-RS资源的位置信息；
3)在子帧n+4，UE通过PUSCH上报给基站所述CSI进程包含的4个CSI-RS资源配置中最优的CSI-RS资源配置在所有配置中的索引。所述最优的CSI-RS资源配置是通过对各个CSI-RS资源进行参考信号接收功率(Reference Signal Received Power，RSRP)测量来判断的，UE选择RSRP值最大的CSI-RS资源。
4)在子帧n+4和子帧n+9，UE基于选择的最优CSI-RS资源进行CSI测量；
5)在子帧n+10，基站再通过下行DCI触发UE进行非周期CSI反馈，令UE反馈之前上报的位置信息对应的CSI-RS资源得到的CSI；
6)在子帧n+14，UE将基于在步骤3)中上报的CSI反馈配置的索引在所述CSI进程包含的所有CSI-RS资源中对应的CSI-RS资源，即选择的最优CSI-RS资源得到的CSI通过PUSCH上报给基站。
实施例2
本实施例中采用非周期CSI反馈触发指令触发方式，UE采用周期性上报方式在每个子帧的固定位置上报CSI反馈配置的位置信息，之后对上报的位置信息对应的CSI反馈配置进行CSI测量，接收到基站发送的非周期CSI反馈触发指令，上报对应位置信息的CSI，具体步骤如下：
1)基站通过高层信令指示UE用于非周期CSI反馈的CSI进程。其中，一个CSI进程包含4个CSI-RS资源配置和一个IMR配置。
2)在子帧n，UE通过PUCCH上报给基站所述CSI进程包含的CSI-RS资源配置中最优的CSI-RS资源配置在所有配置中的索引。所述最优的CSI-RS资源配置是通过估计各个CSI-RS资源对应的下行信道容量来判断的，UE选择对应信道容量最大的CSI-RS资源。
3)在子帧n+2和n+7，UE基于选择的最优CSI-RS资源进行CSI测量；
4)在子帧n+5，基站通过下行DCI触发UE进行非周期CSI反馈；
5)在子帧n+9，UE将基于在步骤2)中上报的索引在所述CSI进程包含的所有CSI-RS资源中对应的CSI-RS资源即选择的最优CSI-RS资源得到的CSI通过PUSCH上报给基站。
实施例3
本实施例中采用非周期CSI反馈触发指令触发方式，UE根据基站发送的非周期CSI 反馈触发指令，确定基站指示的需进行CSI反馈的CSI反馈配置，之后基于基站指示的位置信息对应的CSI反馈配置进行CSI测量，测量结束后上报对应位置信息的CSI，具体步骤如下：
1)基站通过高层信令指示UE用于非周期CSI反馈的CSI进程组。其中，CSI进程组包含四个CSI进程，每个CSI进程包含一个CSI-RS资源配置和一个IMR配置。
2)在子帧n，基站通过下行DCI触发UE进行非周期CSI反馈；在触发信令中，基站通过2比特信息指示需要UE反馈CSI的CSI进程在所有配置的四个CSI进程中的索引，该信息即为位置信息。
3)UE接收到触发信令后，基于所述索引在所有配置的四个CSI进程中对应的CSI进程进行CSI测量。具体的，UE在触发后的两个CSI-RS资源周期内进行CSI测量；
4)在子帧n+12，UE将基于所述CSI进程得到的CSI通过PUSCH上报给基站。
基于同一发明构思，本申请实施例中还提供了一种反馈CSI的UE和接收CSI的基站，由于该装置解决问题的原理与一种反馈和接收CSI方法相似，因此该装置的实施可以参见方法的实施，重复之处不再赘述。
本申请提供一种用户设备UE，如图7所示，包括：
配置确定单元701，用于根据基站的指示确定基站配置的至少一个CSI反馈配置组，每个CSI反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；
CSI上报单元702，用于确定需要上报CSI时，通过物理上行控制信道PUCCH或物理上行共享信道PUSCH将基于第一CSI反馈配置获得的CSI上报给基站，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置。
优选地，所述CSI反馈配置为CSI进程，或为非零功率信道状态信息参考信号NPZ CSI-RS配置，或为干扰测量资源IMR配置。
优选地，所述第一CSI反馈配置为UE最近通过物理上行控制信道PUCCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
所述第一CSI反馈配置为UE最近通过物理上行共享信道PUSCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
所述第一CSI反馈配置为UE通过PUCCH和PUSCH上报的CSI反馈配置的位置信息中，最近上报的CSI反馈配置的位置信息对应的CSI反馈配置。
优选地，最近上报的CSI反馈配置的位置信息具体为：
最近上报的各CSI反馈配置在其所在的CSI反馈配置组的索引；或者
最近上报的CSI反馈配置所在的反馈配置组对应的位置序列，其中一个CSI反馈配置 组对应一个位置序列，该CSI反馈配置组中的每个CSI反馈配置对应该位置序列中的一个比特，最近上报时是将需上报的CSI反馈配置对应的位置序列中的比特配置为预设值后，将该位置序列上报给基站。
优选地，所述配置确定单元通过如下方式确定基站指示的CSI反馈配置的位置信息：
通过基站发送的非周期CSI触发信令或高层信令，确定基站指示的CSI反馈配置的位置信息。
优选地，该UE还包括：
信令接收单元，用于接收基站发送的下行控制信令，所述下行控制信令用于指示基于最近上报的CSI反馈配置的位置信息确定第一CSI反馈配置，或者根据基站指示的CSI反馈配置的位置信息确定第一CSI反馈配置。
本申请实施例还提供一种用户设备UE，如图8所示，包括处理器800、收发机810和存储器820，其中：
处理器800，用于读取存储器820中的程序，执行下列过程：
根据基站的指示确定基站配置的至少一个CSI反馈配置组，每个CSI反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；确定需要上报CSI时，通过物理上行控制信道PUCCH或物理上行共享信道PUSCH将基于第一CSI反馈配置获得的CSI通过收发机810上报给基站，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置；
收发机810，用于在处理器800的控制下接收和发送数据。
其中，在图8中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器800代表的一个或多个处理器和存储器820代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机810可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口830还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器800负责管理总线架构和通常的处理，存储器820可以存储处理器600在执行操作时所使用的数据。
本申请实施例还提供一种基站，如图9所示，包括：
配置单元901，用于为用户设备UE配置至少一个信道状态信息CSI反馈配置组并指示给UE，每个CSI反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；
CSI接收单元902，用于接收UE通过物理上行控制信道PUCCH或物理上行共享信道PUSCH上报的基于第一CSI反馈配置获得的CSI，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置。
优选地，CSI反馈配置为CSI进程，或为非零功率信道状态信息参考信号NPZ CSI-RS配置，或为干扰测量资源IMR配置。
优选地，所述第一CSI反馈配置为UE最近通过PUCCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
所述第一CSI反馈配置为UE最近通过PUSCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
所述第一CSI反馈配置为UE通过PUCCH和PUSCH上报的CSI反馈配置的位置信息中，最近上报的CSI反馈配置的位置信息对应的CSI反馈配置。
优选地，该基站还包括：
指示单元，用于向UE发送下行控制信令，所述下行控制信令用于指示UE基于最近上报的CSI反馈配置的位置信息确定第一CSI反馈配置，或者根据基站指示的CSI反馈配置的位置信息确定第一CSI反馈配置。
本申请实施例还提供一种基站，如图10所示，包括处理器100、收发机110和存储器120，其中：
处理器100，用于读取存储器120中的程序，执行下列过程：
为用户设备UE配置至少一个信道状态信息CSI反馈配置组并通过收发机110指示给UE，每个CSI反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；
通过收发机110接收UE通过物理上行控制信道PUCCH或物理上行共享信道PUSCH上报的基于第一CSI反馈配置获得的CSI，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置；
收发机110，用于在处理器100的控制下接收和发送数据。
其中，在图10中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器100代表的一个或多个处理器和存储器120代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机110可以是多个元件，即包括发送机和收发机，提供用于在传输介质上与各种其他装置通信的单元。处理器100负责管理总线架构和通常的处理，存储器120可以存储处理器100在执 行操作时所使用的数据。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本申请的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (24)

  1. 一种用户设备UE反馈信道状态信息的方法，其特征在于，包括：
    根据基站的指示确定基站配置的至少一个CSI反馈配置组，每个CSI反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；
    确定需要上报CSI时，通过物理上行控制信道PUCCH或物理上行共享信道PUSCH将基于第一CSI反馈配置获得的CSI上报给基站，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置。
  2. 如权利要求1所述的方法，其特征在于，
    所述CSI反馈配置为CSI进程，或为非零功率信道状态信息参考信号NPZ CSI-RS配置，或为干扰测量资源IMR配置。
  3. 如权利要求1所述的方法，其特征在于，
    所述第一CSI反馈配置为UE最近通过物理上行控制信道PUCCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
    所述第一CSI反馈配置为UE最近通过物理上行共享信道PUSCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
    所述第一CSI反馈配置为UE通过PUCCH和PUSCH上报的CSI反馈配置的位置信息中，最近上报的CSI反馈配置的位置信息对应的CSI反馈配置。
  4. 如权利要求1或3所述的方法，其特征在于，最近上报的CSI反馈配置的位置信息具体为：
    最近上报的各CSI反馈配置在其所在的CSI反馈配置组的索引；或者
    最近上报的CSI反馈配置所在的反馈配置组对应的位置序列，其中一个CSI反馈配置组对应一个位置序列，该CSI反馈配置组中的每个CSI反馈配置对应该位置序列中的一个比特，最近上报时是将需上报的CSI反馈配置对应的位置序列中的比特配置为预设值后，将该位置序列上报给基站。
  5. 如权利要求1所述的方法，其特征在于，基站指示的CSI反馈配置的位置信息具体为：
    CSI反馈配置在其所在的CSI反馈配置组中的索引；或者
    CSI反馈配置所在的CSI反馈配置组对应的位置序列，其中一个CSI反馈配置组对应一个位置序列，该CSI反馈配置组中的每个CSI反馈配置对应该位置序列中的一个比特，基站在指示时将需上报的CSI反馈配置对应的位置序列中的比特配置为预设值后，将该位置序列发送给UE。
  6. 如权利要求1所述的方法，其特征在于，通过如下方式确定基站指示的CSI反馈 配置的位置信息：
    通过基站发送的非周期CSI触发信令或高层信令，确定基站指示的CSI反馈配置的位置信息。
  7. 如权利要求1所述的方法，其特征在于，还包括：
    接收基站发送的下行控制信令，所述下行控制信令用于指示基于最近上报的CSI反馈配置的位置信息确定第一CSI反馈配置，或者根据基站指示的CSI反馈配置的位置信息确定第一CSI反馈配置。
  8. 一种基站接收信道状态信息CSI的方法，其特征在于，包括：
    为用户设备UE配置至少一个信道状态信息CSI反馈配置组并指示给UE，每个CSI反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；
    接收UE通过物理上行控制信道PUCCH或物理上行共享信道PUSCH上报的基于第一CSI反馈配置获得的CSI，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置。
  9. 如权利要求8所述的方法，其特征在于，
    所述CSI反馈配置为CSI进程，或为非零功率信道状态信息参考信号NPZ CSI-RS配置，或为干扰测量资源IMR配置。
  10. 如权利要求8所述的方法，其特征在于，
    所述第一CSI反馈配置为UE最近通过PUCCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
    所述第一CSI反馈配置为UE最近通过PUSCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
    所述第一CSI反馈配置为UE通过PUCCH和PUSCH上报的CSI反馈配置的位置信息中，最近上报的CSI反馈配置的位置信息对应的CSI反馈配置。
  11. 如权利要求8所述的方法，其特征在于，还包括：
    向UE发送下行控制信令，所述下行控制信令用于指示UE基于最近上报的CSI反馈配置的位置信息确定第一CSI反馈配置，或者根据基站指示的CSI反馈配置的位置信息确定第一CSI反馈配置。
  12. 一种用户设备UE，其特征在于，包括：
    配置确定单元，用于根据基站的指示确定基站配置的至少一个CSI反馈配置组，每个CSI反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；
    CSI上报单元，用于确定需要上报CSI时，通过物理上行控制信道PUCCH或物理上行共享信道PUSCH将基于第一CSI反馈配置获得的CSI上报给基站，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置。
  13. 如权利要求12所述的UE，其特征在于，
    所述CSI反馈配置为CSI进程，或为非零功率信道状态信息参考信号NPZ CSI-RS配置，或为干扰测量资源IMR配置。
  14. 如权利要求12所述的UE，其特征在于，
    所述第一CSI反馈配置为UE最近通过物理上行控制信道PUCCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
    所述第一CSI反馈配置为UE最近通过物理上行共享信道PUSCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
    所述第一CSI反馈配置为UE通过PUCCH和PUSCH上报的CSI反馈配置的位置信息中，最近上报的CSI反馈配置的位置信息对应的CSI反馈配置。
  15. 如权利要求12或14所述的UE，其特征在于，最近上报的CSI反馈配置的位置信息具体为：
    最近上报的各CSI反馈配置在其所在的CSI反馈配置组的索引；或者
    最近上报的CSI反馈配置所在的反馈配置组对应的位置序列，其中一个CSI反馈配置组对应一个位置序列，该CSI反馈配置组中的每个CSI反馈配置对应该位置序列中的一个比特，最近上报时是将需上报的CSI反馈配置对应的位置序列中的比特配置为预设值后，将该位置序列上报给基站。
  16. 如权利要求12所述的UE，其特征在于，最近上报的CSI反馈配置的位置信息具体为：
    最近上报的各CSI反馈配置在其所在的CSI反馈配置组的索引；或者
    最近上报的CSI反馈配置所在的反馈配置组对应的位置序列，其中一个CSI反馈配置组对应一个位置序列，该CSI反馈配置组中的每个CSI反馈配置对应该位置序列中的一个比特，最近上报时是将需上报的CSI反馈配置对应的位置序列中的比特配置为预设值后，将该位置序列上报给基站。
  17. 如权利要求12所述的UE，其特征在于，所述配置确定单元通过如下方式确定基站指示的CSI反馈配置的位置信息：
    通过基站发送的非周期CSI触发信令或高层信令，确定基站指示的CSI反馈配置的位置信息。
  18. 如权利要求12所述的UE，其特征在于，还包括：
    信令接收单元，用于接收基站发送的下行控制信令，所述下行控制信令用于指示基于最近上报的CSI反馈配置的位置信息确定第一CSI反馈配置，或者根据基站指示的CSI反馈配置的位置信息确定第一CSI反馈配置。
  19. 一种基站，其特征在于，包括：
    配置单元，用于为用户设备UE配置至少一个信道状态信息CSI反馈配置组并指示给UE，每个CSI反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；
    CSI接收单元，用于接收UE通过物理上行控制信道PUCCH或物理上行共享信道PUSCH上报的基于第一CSI反馈配置获得的CSI，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置。
  20. 如权利要求19所述的基站，其特征在于，
    所述CSI反馈配置为CSI进程，或为非零功率信道状态信息参考信号NPZ CSI-RS配置，或为干扰测量资源IMR配置。
  21. 如权利要求19所述的基站，其特征在于，
    所述第一CSI反馈配置为UE最近通过PUCCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
    所述第一CSI反馈配置为UE最近通过PUSCH上报的CSI反馈配置的位置信息对应的CSI反馈配置；或者
    所述第一CSI反馈配置为UE通过PUCCH和PUSCH上报的CSI反馈配置的位置信息中，最近上报的CSI反馈配置的位置信息对应的CSI反馈配置。
  22. 如权利要求19所述的基站，其特征在于，还包括：
    指示单元，用于向UE发送下行控制信令，所述下行控制信令用于指示UE基于最近上报的CSI反馈配置的位置信息确定第一CSI反馈配置，或者根据基站指示的CSI反馈配置的位置信息确定第一CSI反馈配置。
  23. 一种用户设备UE，其特征在于，包括：处理器、收发机和存储器，其中：
    所述处理器，用于读取所述存储器中的程序，执行下列过程：
    根据基站的指示确定基站配置的至少一个CSI反馈配置组，每个CSI反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；确定需要上报CSI时，通过物理上行控制信道PUCCH或物理上行共享信道PUSCH将基于第一CSI反馈配置获得的CSI通过所述收发机上报给基站，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置；
    所述收发机，用于在所述处理器的控制下接收和发送数据。
  24. 一种基站，其特征在于，包括：处理器、收发机和存储器，其中：
    所述处理器，用于读取所述存储器中的程序，执行下列过程：
    为用户设备UE配置至少一个信道状态信息CSI反馈配置组并通过所述收发机指示给UE，每个CSI反馈配置组包括至少一个CSI反馈配置，所述CSI反馈配置为用于下行CSI测量和反馈的下行信号配置；
    通过所述收发机接收UE通过物理上行控制信道PUCCH或物理上行共享信道PUSCH上报的基于第一CSI反馈配置获得的CSI，所述第一CSI反馈配置为UE根据最近上报的CSI反馈配置的位置信息或者基站指示的CSI反馈配置的位置信息，从对应的CSI反馈配置组中确定的CSI反馈配置；
    所述收发机，用于在所述处理器的控制下接收和发送数据。
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US11984956B2 (en) 2017-09-30 2024-05-14 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Method for calculating channel quality indicator CQI, terminal device, and network device

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