[go: up one dir, main page]

WO2016184335A1 - Procédé de renvoi d'informations d'état de canal et terminal - Google Patents

Procédé de renvoi d'informations d'état de canal et terminal Download PDF

Info

Publication number
WO2016184335A1
WO2016184335A1 PCT/CN2016/081729 CN2016081729W WO2016184335A1 WO 2016184335 A1 WO2016184335 A1 WO 2016184335A1 CN 2016081729 W CN2016081729 W CN 2016081729W WO 2016184335 A1 WO2016184335 A1 WO 2016184335A1
Authority
WO
WIPO (PCT)
Prior art keywords
csi feedback
csi
feedback configuration
configuration group
feedback
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/081729
Other languages
English (en)
Chinese (zh)
Inventor
陈文洪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Academy of Telecommunications Technology CATT
Original Assignee
China Academy of Telecommunications Technology CATT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201510282902.3A external-priority patent/CN106301509B/zh
Application filed by China Academy of Telecommunications Technology CATT filed Critical China Academy of Telecommunications Technology CATT
Priority to JP2017560695A priority Critical patent/JP6581216B2/ja
Priority to KR1020177034962A priority patent/KR102138649B1/ko
Priority to US15/576,273 priority patent/US10511984B2/en
Priority to EP16795822.2A priority patent/EP3300280B1/fr
Publication of WO2016184335A1 publication Critical patent/WO2016184335A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals

Definitions

  • the embodiments of the present disclosure relate to the field of communications, and in particular, to a channel state information feedback method and a terminal.
  • the antenna arrays of network devices are generally horizontally arranged, such as the horizontally arranged dual polarized antennas shown in Figure 1a and the horizontally arranged linear array antennas shown in Figure 1b.
  • the transmitter beam of the network equipment can only be adjusted in the horizontal direction, and 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 industry has emerged an active antenna that can independently control each array. With this antenna array, dynamic adjustment of the beam in the vertical direction is possible, as shown in Figure 1c.
  • Arranged dual-polarized antennas, as shown in Figure 1d are arranged horizontally and vertically.
  • the transmission signal of the network device can not only shape the terminal in the horizontal direction, but also shape the terminal in the vertical direction.
  • the terminal In order for the network device to determine the vertical direction of the shaping vector so that the vertical direction beam can be aligned with the terminal to obtain the maximum shaping gain, the terminal usually needs to feed back the channel state information (CSI) in the vertical direction.
  • CSI channel state information
  • the terminal needs to report the optimal CSI feedback configuration. Corresponding CSI and corresponding location information of the CSI, so that the network device obtains the current optimal beam information. If the network device does not support FD-MIMO, the terminal needs to feed back the CSI corresponding to all the configured CSI feedback configurations, and does not need to report the corresponding location information of the CSI. Since the network device is configured with a large number of antennas to support FD-MIMO, it is unknown to the terminal, so the terminal cannot determine which way to perform CSI feedback.
  • FD-MIMO Full Dimension Multi-Input-Multi-Output
  • a channel state information feedback method and a terminal are needed for the terminal to determine a CSI feedback mode according to the received information for CSI feedback, and then perform CSI measurement and feedback according to the determined CSI feedback mode. .
  • the embodiment of the present disclosure provides a channel state information feedback method and a terminal, which are used to enable a terminal to determine a CSI feedback manner according to the received information for CSI feedback, and then perform CSI measurement and feedback according to the determined CSI feedback manner.
  • An embodiment of the present disclosure provides a channel state information feedback method, including:
  • CSI measurement and feedback are performed according to the determined CSI feedback mode.
  • the CSI feedback manner includes a first feedback manner and a second feedback manner.
  • the first feedback mode refers to feedback CSI measured based on all CSI feedback configurations in the CSI feedback configuration group; the second feedback mode refers to selecting an optimal CSI feedback configuration from the CSI feedback configuration group, and the feedback is based on The CSI of the optimal CSI feedback configuration in the CSI feedback configuration group performs measurement of the CSI and the location information of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • selecting the optimal CSI feedback configuration from the CSI feedback configuration group includes:
  • the reference signal received power RSRP measurement is performed on each CSI feedback configuration in the CSI feedback configuration group, and the CSI feedback configuration corresponding to the determined one or more RSRP median RSRPs is determined as the optimal in the CSI feedback configuration group.
  • CSI feedback configuration or
  • CSI feedback configuration Performing channel quality indicator CQI estimation for each CSI feedback configuration in the CSI feedback configuration group, and determining the CSI feedback configuration corresponding to the CQI with the largest median value of one or more CQIs is the best in the CSI feedback configuration group.
  • the CSI feedback configuration is used as the optimal CSI feedback configuration in the set of CSI feedback configuration groups.
  • the location information of the optimal CSI feedback configuration in the CSI feedback configuration group specifically refers to:
  • the index of the optimal CSI feedback configuration in the CSI feedback configuration group is the index of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the optimal CSI feedback configures a bit value of the corresponding position on the position sequence of the CSI feedback configuration group, and each CSI feedback configuration in the CSI feedback configuration group corresponds to a position on the sequence of positions.
  • the location is included.
  • the feedback period of the information is N times the feedback period of the RI, and the physical uplink control channel PUCCH resource location of the location information is the same as the PUCCH resource location of the RI, where N is a positive integer.
  • the location information and the RI are fed back in the same subframe, the location information and the RI time are fed back after joint coding or concatenation.
  • the RI is measured according to an optimal CSI feedback configuration corresponding to the location information that is fed back in the same subframe.
  • the fed back RI is obtained by performing CSI measurement according to an optimal CSI feedback configuration corresponding to the most recently fed back location information.
  • the CSI feedback manner corresponding to the CSI feedback configuration group is determined, including:
  • the CSI feedback mode corresponding to the CSI feedback configuration group is determined according to the feedback mode of the CSI feedback configuration group, where the feedback mode of the CSI feedback configuration group includes periodic CSI feedback and aperiodic CSI feedback.
  • the CSI feedback manner corresponding to the CSI feedback configuration group is determined according to the number of CSI feedback configurations included in the CSI feedback configuration group, including:
  • the CSI feedback configuration group includes a CSI feedback configuration, determining that the CSI feedback configuration group adopts a first feedback manner, where the first feedback manner refers to feeding back CSI corresponding to all CSI feedback configurations in the CSI feedback configuration group; or
  • the second feedback mode is adopted for the CSI feedback configuration group, where the second feedback mode refers to feedback corresponding to the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the CSI and the optimal CSI feedback configure location information in the CSI feedback configuration group.
  • the CSI feedback manner corresponding to the CSI feedback configuration group is determined according to the number of CSI feedback configurations in the CSI feedback configuration group, including:
  • the first feedback mode is determined for the CSI feedback configuration group
  • the second feedback mode is determined for the CSI feedback configuration group.
  • the first feedback mode refers to the CSI corresponding to all the CSI feedback configurations in the CSI feedback configuration group
  • the second feedback mode refers to the CSI corresponding to the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the CSI feedback configures location information in the CSI feedback configuration group.
  • the number of CSI feedback configurations in the CSI feedback configuration group that require CSI feedback is pre-agreed;
  • the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback is configured by the network device; or
  • the number of CSI feedback configurations that need to be subjected to CSI feedback in the CSI feedback configuration group is indicated by the indication information included in the trigger signaling of the aperiodic CSI feedback by the network device.
  • the feedback mode indication information corresponding to the CSI feedback configuration group is included in the CSI feedback configuration group.
  • determining, according to the feedback mode of the CSI feedback configuration group, a CSI feedback manner corresponding to the CSI feedback configuration group including:
  • determining that the CSI feedback configuration group corresponding to the CSI feedback configuration group is the first feedback mode, and the first feedback manner refers to feeding back all CSI feedback configurations in the CSI feedback configuration group.
  • Corresponding CSI or
  • the CSI feedback mode corresponding to the CSI feedback configuration group is determined to be the second feedback mode, and the second feedback mode is to feedback the optimal CSI in the CSI feedback configuration group.
  • the CSI corresponding to the feedback configuration and the optimal CSI feedback configure location information in the CSI feedback configuration group.
  • An embodiment of the present disclosure provides a terminal, including:
  • a receiving unit configured to receive a CSI feedback configuration group for channel state information CSI feedback indicated by the network device
  • a determining unit configured to determine a CSI feedback mode corresponding to the CSI feedback configuration group
  • a processing unit configured to perform CSI measurement and feedback according to the determined CSI feedback manner.
  • the CSI feedback manner includes a first feedback manner and a second feedback manner.
  • the first feedback mode refers to feedback CSI measured based on all CSI feedback configurations in the CSI feedback configuration group; the second feedback mode refers to selecting an optimal CSI feedback configuration from the CSI feedback configuration group, and the feedback is based on The CSI of the optimal CSI feedback configuration in the CSI feedback configuration group performs measurement of the CSI and the location information of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • processing unit is specifically configured to:
  • the reference signal received power RSRP measurement is performed on each CSI feedback configuration in the CSI feedback configuration group, and the CSI feedback configuration corresponding to the determined one or more RSRP median RSRPs is determined as the optimal in the CSI feedback configuration group.
  • CSI feedback configuration or
  • the CSI feedback configuration is used as the optimal CSI feedback configuration in the set of CSI feedback configuration groups.
  • the location information of the optimal CSI feedback configuration in the CSI feedback configuration group specifically refers to:
  • the index of the optimal CSI feedback configuration in the CSI feedback configuration group is the index of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the optimal CSI feedback configures a bit value of the corresponding position on the position sequence of the CSI feedback configuration group, and each CSI feedback configuration in the CSI feedback configuration group corresponds to a position on the sequence of positions.
  • the location is included.
  • the feedback period of the information is N times the feedback period of the RI, and the physical uplink control channel PUCCH resource location of the location information is the same as the PUCCH resource location of the RI, where N is a positive integer.
  • the location information and the RI are fed back in the same subframe, the location information and the RI time are fed back after joint coding or concatenation.
  • the RI is measured according to an optimal CSI feedback configuration corresponding to the location information that is fed back in the same subframe.
  • the fed back RI is obtained by performing CSI measurement according to an optimal CSI feedback configuration corresponding to the most recently fed back location information.
  • the determining unit is specifically configured to:
  • the CSI feedback mode corresponding to the CSI feedback configuration group is determined according to the feedback mode of the CSI feedback configuration group, where the feedback mode of the CSI feedback configuration group includes periodic CSI feedback and aperiodic CSI feedback.
  • the determining unit is specifically configured to:
  • the CSI feedback configuration group includes a CSI feedback configuration, determining that the CSI feedback configuration group adopts a first feedback manner, where the first feedback manner refers to feeding back CSI corresponding to all CSI feedback configurations in the CSI feedback configuration group; or
  • the second feedback mode is adopted for the CSI feedback configuration group, where the second feedback mode refers to feedback corresponding to the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the CSI and the optimal CSI feedback configure location information in the CSI feedback configuration group.
  • the determining unit is specifically configured to:
  • the first feedback mode is determined for the CSI feedback configuration group
  • the second feedback mode is determined for the CSI feedback configuration group.
  • the first feedback mode refers to the CSI corresponding to all the CSI feedback configurations in the CSI feedback configuration group
  • the second feedback mode refers to the CSI corresponding to the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the CSI feedback configures location information in the CSI feedback configuration group.
  • the number of CSI feedback configurations in the CSI feedback configuration group that require CSI feedback is pre-agreed;
  • the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback is configured by the network device; or
  • the number of CSI feedback configurations that need to be subjected to CSI feedback in the CSI feedback configuration group is indicated by the indication information included in the trigger signaling of the aperiodic CSI feedback by the network device.
  • the feedback mode indication information corresponding to the CSI feedback configuration group is included in the CSI feedback configuration group.
  • the determining unit is specifically configured to:
  • determining that the CSI feedback configuration group corresponding to the CSI feedback configuration group is the first feedback mode, and the first feedback manner refers to feeding back all CSI feedback configurations in the CSI feedback configuration group.
  • Corresponding CSI or
  • the CSI feedback mode corresponding to the CSI feedback configuration group is determined to be the second feedback mode, and the second feedback mode is to feedback the optimal CSI in the CSI feedback configuration group.
  • the CSI corresponding to the feedback configuration and the optimal CSI feedback configure location information in the CSI feedback configuration group.
  • An embodiment of the present disclosure provides a terminal, including:
  • a processor for reading a program in the memory performing the following process:
  • a transceiver for receiving and transmitting data under the control of a processor.
  • the CSI feedback manner includes a first feedback manner and a second feedback manner.
  • the first feedback mode refers to feedback CSI measured based on all CSI feedback configurations in the CSI feedback configuration group; the second feedback mode refers to selecting an optimal CSI feedback configuration from the CSI feedback configuration group, and the feedback is based on The CSI of the optimal CSI feedback configuration in the CSI feedback configuration group performs measurement of the CSI and the location information of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the processor is specifically configured to:
  • the reference signal received power RSRP measurement is performed on each CSI feedback configuration in the CSI feedback configuration group, and the CSI feedback configuration corresponding to the determined one or more RSRP median RSRPs is determined as the optimal in the CSI feedback configuration group.
  • CSI feedback configuration or
  • CSI feedback configuration Performing channel quality indicator CQI estimation for each CSI feedback configuration in the CSI feedback configuration group, and determining the CSI feedback configuration corresponding to the CQI with the largest median value of one or more CQIs is the best in the CSI feedback configuration group.
  • the location information of the optimal CSI feedback configuration in the CSI feedback configuration group specifically refers to:
  • the index of the optimal CSI feedback configuration in the CSI feedback configuration group is the index of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the optimal CSI feedback configures a bit value of the corresponding position on the position sequence of the CSI feedback configuration group, and each CSI feedback configuration in the CSI feedback configuration group corresponds to a position on the sequence of positions.
  • the location is included.
  • the feedback period of the information is N times the feedback period of the RI, and the physical uplink control channel PUCCH resource location of the location information is the same as the PUCCH resource location of the RI, where N is a positive integer.
  • the location information and the RI are fed back in the same subframe, the location information and the RI time are fed back after joint coding or concatenation.
  • the RI is measured according to an optimal CSI feedback configuration corresponding to the location information that is fed back in the same subframe.
  • the fed back RI is obtained by performing CSI measurement according to an optimal CSI feedback configuration corresponding to the most recently fed back location information.
  • the processor is specifically configured to:
  • the feed mode where the feedback mode of the CSI feedback configuration group includes periodic CSI feedback and aperiodic CSI feedback.
  • the processor is specifically configured to:
  • the CSI feedback configuration group includes a CSI feedback configuration, determining that the CSI feedback configuration group adopts a first feedback manner, where the first feedback manner refers to feeding back CSI corresponding to all CSI feedback configurations in the CSI feedback configuration group; or
  • the second feedback mode is adopted for the CSI feedback configuration group, where the second feedback mode refers to feedback corresponding to the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the CSI and the optimal CSI feedback configure location information in the CSI feedback configuration group.
  • the processor is specifically configured to:
  • the first feedback mode is determined for the CSI feedback configuration group
  • the second feedback mode is determined for the CSI feedback configuration group.
  • the first feedback mode refers to the CSI corresponding to all the CSI feedback configurations in the CSI feedback configuration group
  • the second feedback mode refers to the CSI corresponding to the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the CSI feedback configures location information in the CSI feedback configuration group.
  • the number of CSI feedback configurations in the CSI feedback configuration group that require CSI feedback is pre-agreed;
  • the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback is configured by the network device; or
  • the number of CSI feedback configurations that need to be subjected to CSI feedback in the CSI feedback configuration group is indicated by the indication information included in the trigger signaling of the aperiodic CSI feedback by the network device.
  • the feedback mode indication information corresponding to the CSI feedback configuration group is included in the CSI feedback configuration group.
  • the processor is specifically configured to:
  • determining that the CSI feedback configuration group corresponding to the CSI feedback configuration group is the first feedback mode, and the first feedback manner refers to feeding back all CSI feedback configurations in the CSI feedback configuration group.
  • Corresponding CSI or
  • the CSI feedback mode corresponding to the CSI feedback configuration group is determined to be the second feedback mode, and the second feedback mode is to feedback the optimal CSI in the CSI feedback configuration group.
  • the CSI corresponding to the feedback configuration and the optimal CSI feedback configure location information in the CSI feedback configuration group.
  • An embodiment of the present disclosure provides a terminal, including a processor and a transceiver, where
  • a processor for reading a program in the memory performing the following process:
  • a transceiver for receiving and transmitting data under the control of a processor.
  • the network device indicates the CSI feedback configuration group for the CSI feedback to the terminal. After receiving the CSI feedback configuration group, the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group, thereby implementing the terminal according to the CSI feedback configuration group.
  • the CSI feedback configuration group configured by the network device performs the purpose of CSI measurement and feedback, thereby achieving the purpose of the terminal supporting the CSI feedback mode of the network device FD-MIMO and non-FD-MIMO modes.
  • 1a is a schematic diagram of a horizontally arranged dual-polarized antenna in the prior art
  • FIG. 1b is a schematic diagram of a horizontally arranged linear array antenna in the prior art
  • 1c is a schematic diagram of a dual-polarized antenna arranged horizontally and vertically in a two-dimensional arrangement in the prior art
  • 1d is a schematic diagram of a linear array antenna arranged horizontally and vertically in a prior art
  • FIG. 2 is a schematic flowchart of a channel state information feedback method implemented by a terminal side according to an embodiment of the present disclosure
  • FIG. 2 is a timing diagram of terminal feedback position information and CSI provided by an embodiment of the present disclosure
  • FIG. 2b is a timing diagram showing another terminal feedback position information and CSI provided by an embodiment of the present disclosure
  • FIG. 3 is a channel state information feedback method implemented by a network device according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another terminal according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of another network device according to an embodiment of the present disclosure.
  • the CSI feedback mode in the embodiment of the present disclosure includes a first feedback mode and a second feedback mode.
  • the first feedback mode refers to feedback CSI measured based on all CSI feedback configurations in the CSI feedback configuration group.
  • the second feedback mode is Refers to selecting an optimal CSI feedback configuration from the CSI feedback configuration group, and feeding back CSI measured based on the optimal CSI feedback configuration in the CSI feedback configuration group, and the optimal CSI feedback configuration is configured in the CSI feedback configuration group. Location information.
  • the CSI feedback mode in the embodiment of the present disclosure may also be other feedback modes, for example, feedback may be measured based on several CSI feedback configurations. CSI.
  • the first feedback mode needs to feed back the CSI measured based on all the CSI feedback configurations in the CSI feedback configuration group. Therefore, the first feedback mode has a large overhead and is more complicated for the terminal. High, the efficiency is lower than the second feedback method.
  • Each CSI process can be configured with an NZP CSI-RS configuration and an interference measurement resource (IMR).
  • the terminal performs channel measurement based on the NZP CSI-RS, and performs interference measurement with the corresponding IMR, thereby obtaining and feeding back.
  • the corresponding CSI for each process.
  • a maximum of three CSI processes can be configured for each LTE terminal for CSI feedback.
  • the CSI feedback of the terminal can be based on a physical uplink control channel (Physical Uplink) Control CHannel, PUCCH) performs periodic CSI feedback, or performs aperiodic CSI feedback based on a Physical Uplink Shared CHannel (PUSCH).
  • PUCCH Physical Uplink Control CHannel
  • PUSCH Physical Uplink Shared CHannel
  • the network device may trigger the terminal to report the CSI corresponding to each CSI process in a certain CSI process set.
  • the CSI process set is pre-configured to the terminal through the high-layer signaling, and the triggering process is implemented by using Downlink Control Information (DCI).
  • DCI Downlink Control Information
  • the terminal can also feed back CSIs corresponding to multiple CSI-RSs that are shaped by different vertical shaping vectors.
  • one CSI feedback configuration group includes one or more CSI feedback configurations, and one CSI feedback configuration group may also include one or more CSI processes, where the CSI process and the CSI feedback are configured as corresponding relationships.
  • one CSI feedback configuration group may also be defined as one CSI process.
  • one CSI process may also include multiple CSI feedback configurations. It has a one-to-one correspondence with the CSI feedback configuration group.
  • one CSI feedback configuration group may include one or more CSI processes as an example.
  • the network device indicates the CSI feedback configuration group for the CSI feedback to the terminal. After receiving the CSI feedback configuration group, the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group, thereby implementing the terminal according to the CSI feedback configuration group.
  • the CSI feedback configuration group configured by the network device performs the purpose of CSI measurement and feedback, thereby achieving the purpose of the terminal supporting the CSI feedback mode of the network device FD-MIMO and non-FD-MIMO modes.
  • FIG. 2 is a schematic diagram of a channel state information feedback method implemented by a terminal side according to an embodiment of the present disclosure, including the following steps:
  • Step 201 Receive a CSI feedback configuration group for CSI feedback indicated by the network device.
  • Step 202 Determine a CSI feedback mode corresponding to the CSI feedback configuration group.
  • Step 203 Perform CSI measurement and feedback according to the determined CSI feedback manner.
  • the indication information of the CSI feedback configuration group used by the network device in the foregoing step 201 for the CSI feedback is usually sent by the high layer signaling, that is, the network device can configure the CSI feedback configuration group for the CSI feedback to the terminal through the high layer signaling. .
  • the number of CSI feedback configuration groups indicated by the network device for CSI feedback is one or more.
  • a network device can configure three CSI feedback configuration groups.
  • One CSI feedback configuration group includes one or more CSI feedback configurations
  • one CSI feedback configuration may be one CSI process, or one NZP CSI-RS (where NZP is the English abbreviation of Non-Zero Power, ie non-zero power;
  • the CSI-RS is the English abbreviation of the Channel State Information Reference Signal, that is, the channel state information reference signal) resource configuration, or one other signal configuration for downlink measurement and CSI feedback.
  • each CSI feedback configuration group contains four NZP CSI-RS resource configurations.
  • the CSI feedback configuration group contains configuration information associated with all CSI feedback configurations in the CSI feedback configuration group.
  • the CSI feedback configuration group includes a plurality of NZP CSIRS resource configurations, and further includes IMR configuration information that is commonly associated with the multiple NZP CSIRS resource configurations.
  • the network device configures one CSI feedback configuration group for each carrier; or the network device configures one CSI feedback configuration group for all carriers.
  • the NZP CSI-RS included in different CSI feedback configurations can be beamformed with different shaped vectors.
  • the feedback manner determined by the terminal may be the first feedback manner or the second feedback manner.
  • the terminal determines a CSI feedback manner corresponding to the CSI feedback configuration group, and includes the following types:
  • the CSI feedback mode corresponding to the CSI feedback configuration group is determined according to the number of CSI feedback configurations included in the CSI feedback configuration group.
  • the CSI feedback configuration group includes a CSI feedback configuration
  • the CSI feedback configuration group includes multiple CSI feedback configurations
  • the CSI feedback configuration corresponding to the CSI feedback configuration group is determined according to the number of CSI feedback configurations in the CSI feedback configuration group.
  • the group uses the second feedback method.
  • the number of CSI feedback configurations that need to perform CSI feedback in the CSI feedback configuration group may be determined by one of the following three modes: mode a1, mode a2, and mode a3:
  • the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback is pre-agreed. For example, it may be pre-defined by standards or pre-scheduled by other means through network devices and terminals. In this case, the terminal may determine the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback according to the foregoing pre-agreed content.
  • the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback is configured by the network device.
  • the number of the CSI feedback configuration in the CSI feedback configuration group that needs to be used for the CSI feedback may be previously indicated to the terminal as a parameter of the CSI feedback configuration group.
  • the CSI feedback configuration group for CSI feedback indicated by the network device further includes The number of CSI feedback configurations in the CSI feedback configuration group that require CSI feedback.
  • the terminal may determine the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback according to the information configured by the network device.
  • the number of CSI feedback configurations that need to be subjected to CSI feedback in the CSI feedback configuration group is indicated by the indication information included in the trigger signaling of the aperiodic CSI feedback by the network device.
  • the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback is indicated by one bit of information in the trigger signaling.
  • the CSI feedback mode corresponding to the CSI feedback configuration group is determined according to the feedback mode indication information included in the trigger signaling of the received aperiodic CSI feedback.
  • the CSI feedback mode corresponding to the CSI feedback configuration group is the first feedback mode or the second feedback mode.
  • the CSI feedback mode corresponding to the CSI feedback configuration group is determined according to the feedback mode indication information corresponding to the CSI feedback configuration group, and each CSI feedback configuration group is configured with feedback mode indication information.
  • the feedback mode indication information corresponding to the CSI feedback configuration group is included in the CSI feedback configuration group. That is, the feedback mode corresponding to the CSI feedback configuration group may be instructed to the terminal as a parameter of the CSI feedback configuration group, that is, the CSI feedback configuration group for the CSI feedback indicated by the network device further includes a feedback manner corresponding to the CSI feedback configuration group.
  • the CSI feedback configuration group is determined according to the feedback mode of the CSI feedback configuration group.
  • the CSI feedback mode where the feedback mode of the CSI feedback configuration group includes periodic CSI feedback and aperiodic CSI feedback.
  • the feedback mode of the CSI feedback configuration group is periodic CSI feedback, determining that the CSI feedback mode corresponding to the CSI feedback configuration group is the first feedback mode. Or, if the feedback mode of the CSI feedback configuration group is aperiodic CSI feedback, determining that the CSI feedback mode corresponding to the CSI feedback configuration group is the second feedback mode.
  • the first mode, the second mode, and the fifth mode belong to the implicit indication mode
  • the third mode and the fourth mode belong to the display indication mode.
  • the terminal feeds back the CSI measured based on all the CSI feedback configurations in the CSI feedback configuration group according to the first feedback mode. If the determined feedback mode of the CSI is the second feedback mode, the terminal selects an optimal CSI feedback configuration from the CSI feedback configuration group according to the second feedback manner, and feeds back the optimal CSI feedback based on the CSI feedback configuration group.
  • the CSI obtained by the measurement and the position information of the optimal CSI feedback configured in the CSI feedback configuration group are configured.
  • the terminal may use periodic CSI feedback or adopt non-periodic CSI feedback.
  • the optimal CSI feedback configuration is selected from the CSI feedback configuration group, including one of the following manners b1, b2, and b3:
  • the reference signal receiving power (RSRP) measurement is performed on each CSI feedback configuration in the CSI feedback configuration group, and the CSI feedback configuration corresponding to the determined RSRP with the largest median value of one or more RSRPs is determined as The optimal CSI feedback configuration in the set of CSI feedback configuration groups.
  • RSRP reference signal receiving power
  • a channel quality indication (CQI) estimation is performed on each CSI feedback configuration in the CSI feedback configuration group, and the CSI feedback configuration corresponding to the CQI with the largest median value of the one or more CQIs determined is the most
  • the CSI feedback configures the optimal CSI feedback configuration in the group.
  • the CSI measurement is performed on each CSI feedback configuration in the CSI feedback configuration group, and the transport block size (Transport Block size, TBsize) corresponding to each CSI feedback configuration is obtained according to the CSI measurement result, and one or more determined TBsize corresponding to the largest median of multiple TBsizes
  • the CSI feedback configuration is used as the optimal CSI feedback configuration in the set of CSI feedback configuration groups.
  • the location information may have multiple representation manners.
  • the first type of location representation the location information of the optimal CSI feedback configuration in the CSI feedback configuration group refers specifically to the index of the optimal CSI feedback configuration in the CSI feedback configuration group. That is, the terminal reports an index of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the second location is represented by a bitmap, that is, each CSI feedback configuration group corresponds to a location sequence, and each CSI feedback configuration in the CSI feedback configuration group corresponds to a location in the sequence of locations, that is, Each CSI feedback configuration in the CSI feedback configuration group corresponds to one bit in the sequence of locations.
  • the location information of the optimal CSI feedback configuration in the CSI feedback configuration group specifically refers to the bit value of the corresponding location of the optimal CSI feedback configuration in the position sequence of the CSI feedback configuration group.
  • the optimal CSI feedback configuration is set to 1 in the position sequence of the position sequence of the CSI feedback configuration group, and the bit value of the other position of the position sequence is set to 0, and the sequence of the position can be adopted at this time.
  • the bit value determines the location information of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the optimal CSI feedback configuration needs to be selected from the CSI feedback configuration group, and the optimal CSI feedback based on the CSI feedback configuration group is periodically fed back.
  • the CSI obtained by the measurement is configured, and the location information of the optimal CSI feedback configured in the CSI feedback configuration group is periodically fed back.
  • the CSI reported by the terminal includes any one or any of a Rank Indicator (RI), a Pre-coding Matrix Indicator (PMI), and a CQI.
  • the RI in the CSI fed back in the second feedback mode may be updated in time according to the latest location information that is fed back, so as to avoid affecting the FD-MIMO performance when the fed back RI does not match the fed back location information.
  • the problem is that, for the second feedback mode, the following preferred solution is provided in the embodiment of the present disclosure:
  • the feedback period of the location information is the feedback of the RI. N times the period, and the location of the PUCCH resource location and RI The PUCCH resource locations are the same, where N is a positive integer.
  • the location of the PUCCH resource of the location information is exactly the same as the location of the PUCCH resource of the RI.
  • the location information fed back in the second feedback mode is always performed together with the RI in the fed back CSI.
  • N is not 1, for example, N is 4, and T represents a feedback period of the RI in the CSI fed back in the second feedback mode, and the period of the feedback position information in the second feedback mode is 4T. That is, between the feedback position information and the RI twice, it is necessary to separately feed back three times of RI.
  • the RI in the second feedback mode, when the position information needs to be fed back, the RI must be fed back at the same time, and the RI can be separately fed back in addition to the feedback together with the position information.
  • the location information and the RI are fed back in the same subframe, the location information and the RI time are fed back after joint coding or concatenation.
  • the location information to be fed back and the RI may be jointly encoded or concatenated to obtain the location information and the RI corresponding to the feedback.
  • New indication information such as a new code, and then feedback the new indication information.
  • the network device may determine the new indication according to the joint coding rule or the cascading rule. Location information and RI corresponding to the information.
  • the RI is measured according to an optimal CSI feedback configuration corresponding to the location information fed back in the same subframe. In this way, it can be ensured that the RI fed back in the same subframe matches the position information fed back in the subframe, thereby avoiding affecting the performance of FD-MIMO.
  • the fed back RI is obtained by performing CSI measurement according to an optimal CSI feedback configuration corresponding to the most recently fed back location information.
  • the RI when the RI is separately fed back between the two feedback position information, the RI needs to be based on the most recently fed back position information, and the “recently fed back position information” specifically refers to the time point of the feedback position information from the current feedback RI.
  • the position information of the feedback that is closest to the time point that is, the position information of the latest feedback in time
  • the RI is obtained by performing CSI measurement based on the optimal CSI feedback configuration corresponding to the position information of the latest feedback at the time.
  • the PMI and the CMII are fed back.
  • the CQI is obtained by performing CSI measurement based on the optimal CSI feedback configuration corresponding to the recently fed back location information.
  • the fed PMI and/or The CQI is obtained by performing CSI measurement according to the optimal CSI feedback configuration corresponding to the recently fed back position information. If the PMI and the location information are fed back in the same subframe, or the CQI and location information are fed back in the same subframe, or the PMI, CQI, and location information are fed back in the same subframe, the PMI and/or CQI fed back is based on the The optimal CSI feedback configuration corresponding to the position information fed back in the same subframe is obtained by CSI measurement.
  • the CSI may be discarded at this time.
  • Information other than RI which feeds back RI and location information in the CSI.
  • PMI and/or CQI, and RI and location information are sent in the same subframe. At this time, because the subframe does not carry so much information, some information needs to be discarded. At this time, the RI and the location information are discarded.
  • the information in the external CSI that is, the PMI and/or CQI are discarded.
  • the embodiment of the present disclosure provides a preferred solution for performing periodic CSI feedback based on the second feedback manner.
  • the foregoing solution ensures that the RI periodically fed back in the second feedback mode matches the latest location information of the feedback. So as to avoid affecting the performance of FD-MIMO.
  • the network device receives the CSI fed back by the terminal, performs downlink data transmission based on the CSI fed back by the terminal, or performs CSI feedback configuration information update based on the CSI fed back by the terminal.
  • the network device can indicate the feedback mode that the terminal should adopt to the terminal by using the CSI feedback configuration group to display the indication mode or the implicit indication mode.
  • the terminal determines the The CSI feedback mode corresponding to the CSI feedback configuration group is a CSI feedback mode supported by the network device, thereby implementing the CSI measurement and feedback according to the CSI feedback mode supported by the network device.
  • the terminal supports both FD-MIMO and non-FD-MIMO modes of network equipment.
  • the feedback mode of the CSI may further enable the network device to determine an optimal vertical shaping vector based on the feedback CSI, and use the optimal vertical shaping vector to perform beamforming.
  • the embodiment of the present disclosure may perform the selection of the optimal NZP CSI-RS in multiple groups by using the aperiodic CSI feedback, and configure the optimal NZP CSI-RS of each group for subsequent periodic or aperiodic CSI feedback, thereby supporting CSI feedback in a CoMP+FD-MIMO scenario.
  • the above embodiments of the present disclosure have better backward compatibility. Specifically, when the CSI feedback configuration group includes only one CSI feedback configuration, or the terminal feeds back the CSI measured based on all CSI feedback configurations in the CSI feedback configuration group according to the first feedback manner, the terminal in the embodiment of the present disclosure
  • the CSI feedback method is consistent with the feedback method in the prior art.
  • the network device indicates, by the high layer signaling, two CSI feedback configuration groups used by the terminal for periodic CSI feedback, and each CSI feedback configuration group includes one or more NZP CSI-RS configurations and one IMR configuration. Different NZP CSI-RSs in each CSI feedback configuration group are shaped using different vertical shaping vectors.
  • the terminal After receiving the configuration, the terminal determines the feedback mode according to the number of NZP CSI-RSs in each CSI feedback configuration group, where:
  • a configuration group includes only one NZP CSI-RS
  • the terminal performs CSI measurement and reporting based on the NZP CSI-RS and the IMR configuration in the configuration group, and the CSI reported by the terminal includes any one of RI, PMI, and CQI. Any of several items.
  • the terminal needs to select an optimal NZP CSI-RS from multiple NZP CSI-RSs for CSI measurement. For example, the terminal may select an optimal NZP CSI-RS according to the RSRP measured by each NZP CSI-RS, and perform CSI measurement based on the selected NZP CSI-RS and the IMR configuration in the configuration group, and feed back the measured RI, Any one or more of the PMI and the CQI, in addition, the index of the selected NZP CSI-RS in all NZP CSI-RSs in the configuration group needs to be reported.
  • the network device indicates, by higher layer signaling, three CSI feedback configuration groups used by the terminal for aperiodic CSI feedback, and each CSI feedback configuration group includes one or more NZP CSI-RS configurations.
  • each CSI feedback configuration group includes one or more NZP CSI-RS configurations.
  • CSI In the feedback configuration group 1 and the CSI feedback configuration group 2, each configuration group corresponds to one transmission point, and different NZP CSI-RS resources in one CSI feedback configuration group are shaped by different vertical shaping vectors.
  • different NZP CSI-RS resource configurations correspond to different transmission points.
  • the network device configures corresponding feedback modes for each CSI feedback configuration group at the same time.
  • the CSI feedback configuration group 1 and the CSI feedback configuration group 2 adopt the second feedback mode, and the CSI feedback configuration group 3 adopts the first feedback mode.
  • the feedback mode of each CSI feedback configuration group is indicated by one-bit signaling and is indicated to the terminal together with the configuration information of the corresponding CSI feedback configuration group.
  • the network device performs aperiodic CSI feedback through the DCI triggering terminal, where the trigger signaling includes two bits of information, and the indicated contents are as shown in Table 1:
  • Table 1 Trigger signaling contains the content indicated by the two-bit information
  • Two-bit information Content indicated by two-bit information 00 The feedback is based on the CSI feedback configuration group CSI measured by CSI measurement 01
  • the feedback is based on CSI feedback configuration group 2 for CSI measurement.
  • the feedback is based on CSI feedback configuration group III for CSI measurement. 11 Do not perform aperiodic CSI feedback
  • the terminal After receiving the trigger signaling, the terminal performs CSI measurement and feedback for each CSI feedback configuration group, where the CSI measurement and feedback mode of the CSI feedback configuration group is obtained according to a feedback manner preconfigured for the configuration group. For example, the network device triggers the terminal to feed back CSI obtained by performing CSI measurement based on the CSI feedback configuration group 3 by using the two-bit information “10”, and the terminal needs to perform CSI measurement according to each NZP CSI-RS in the CSI feedback configuration group III, respectively, and The feedback is based on the CSI obtained by CSI measurement by the CSI feedback configuration group 3.
  • the network device receives the aperiodic CSI fed back by the terminal, performs downlink data transmission based on the CSI fed back by the terminal, or performs CSI feedback configuration information update based on the CSI fed back by the terminal. For example, the network device triggers the terminal to report the index of the optimal NZP CSI-RS configuration in the CSI feedback configuration group 1 and the CSI feedback configuration group 2, and obtains the optimal NZP CSI-RS configuration in each group as the CSI feedback configuration.
  • the CSI feedback configuration in group 3 so that the terminal only feeds back the best among the various transmission points.
  • the NZP CSI-RS configuration corresponds to the CSI.
  • FIG. 2 is a timing diagram of terminal feedback position information and CSI provided by an embodiment of the present disclosure, which is introduced as follows in conjunction with FIG. 2a.
  • the CSI feedback configuration group used by the base station to indicate the periodic CSI feedback by the base station (the CSI feedback configuration group in the embodiment of the disclosure may also be defined as a CSI feedback configuration set), where the CSI feedback configuration group includes multiple NZP CSI-RS configurations and A common IMR configuration in which different NZP CSI-RSs are shaped using different vertical shaping vectors.
  • the terminal After receiving the CSI feedback configuration group, the terminal selects an optimal NZP CSI-RS for CSI measurement from multiple NZP CSI-RSs in the CSI feedback configuration group. For example, the terminal may select an optimal NZP CSI-RS according to the RSRP measured by each NZP CSI-RS, and perform CSI measurement based on the selected NZP CSI-RS and the IMR configuration in the configuration group to obtain RI, PMI, and CQI.
  • the terminal reports the location information (such as an index) in the NZP CSI-RS of the selected NZP CSI-RS to the base station along with the RI calculated based on the selected optimal NZP CSI-RS.
  • index 1 is reported together with RI time t11 on the time axis
  • index 2 and RI are reported together at time t17.
  • the terminal reports the PMI and/or CQI at time t12 and t13, reports the RI separately at time t14, and reports the PMI and/or CQI at time t15 and t16.
  • the PMI and/or CQI reported between t11 and time t17, and RI are all measured based on the corresponding optimal CSI feedback configuration of index 1 in the CSI feedback configuration group.
  • the information in the CSI reported by the terminal is measured based on the optimal CSI feedback configuration corresponding to the index 2 in the CSI feedback configuration group, as shown in FIG. 2a.
  • the PMI and/or CQI reported at time t18 is measured based on the optimal CSI feedback configuration corresponding to index 2 in the CSI feedback configuration group.
  • FIG. 2b exemplarily shows a timing diagram of another terminal feedback position information and CSI provided by an embodiment of the present disclosure, which is described below in conjunction with FIG. 2b.
  • the base station indicates the terminal for use by the high layer signaling
  • the CSI feedback configuration group of the CSI feedback includes multiple CSI processes, and each CSI process includes one NZP CSI-RS configuration and one IMR configuration.
  • the terminal After receiving the CSI feedback configuration group, the terminal selects an optimal one of the multiple CSI processes of the CSI feedback configuration group for CSI measurement. For example, the terminal may perform CSI estimation according to each CSI process, select the CSI corresponding CSI process as the optimal CSI process, and perform CSI measurement based on the selected optimal CSI process to obtain RI and CQI.
  • the terminal reports the location information (such as an index) in the CSI process in the CSI feedback configuration group to the base station together with the RI calculated based on the selected optimal CSI process.
  • index 1 and RI are reported together at time t21
  • index 2 and RI are reported together at time t24
  • index 3 and RI are reported together at time t27.
  • the terminal reports the CQI at time t22 and t23 before the index 2 is reported, and the CQI reported between the time t21 and the time t24 is based on the index 1 in the CSI feedback configuration group.
  • the optimal CSI process is measured.
  • the terminal After the index 2 is reported by the terminal, before reporting the index 3, the terminal sequentially reports the CQI at times t25 and t26, and the CQIs reported between time t24 and time t27 are based on the index 2 in the CSI feedback configuration group. The excellent CSI process is measured. After the terminal reports the index 3 at time t27, the information in the CSI reported by the terminal is measured based on the optimal CSI process corresponding to the index 3 in the CSI feedback configuration group, and time t28 in FIG. 2b. The reported CQI is obtained based on the index 3 corresponding to the optimal CSI process in the CSI feedback configuration group.
  • the network device indicates to the terminal a CSI feedback configuration group for the CSI feedback.
  • the terminal After receiving the CSI feedback configuration group, the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group, thereby implementing the terminal.
  • the purpose of performing CSI measurement and feedback is to achieve the purpose of supporting the CSI feedback mode of the network device FD-MIMO and non-FD-MIMO modes.
  • FIG. 3 illustrates a channel state information feedback method implemented by a network device according to an embodiment of the present disclosure, including the following steps:
  • Step 301 The network device indicates, to the terminal, a CSI feedback configuration group for CSI feedback.
  • Step 302 The network device receives the CSI obtained by the CSI measurement based on the determined CSI feedback manner corresponding to the CSI feedback configuration group that is fed back by the terminal.
  • the indication information of the CSI feedback configuration group used by the network device in the foregoing step 301 to indicate the CSI feedback is usually sent by the high layer signaling, that is, the network device can configure the CSI feedback configuration for the CSI feedback to the terminal through the high layer signaling. group.
  • the CSI feedback configuration group indicated by the network device has several preferred features, which have been described in detail in the foregoing, and will not be further described herein.
  • the CSI feedback mode includes a first feedback mode and a second feedback mode;
  • the first feedback mode refers to feedback CSI measured based on all CSI feedback configurations in the CSI feedback configuration group;
  • the feedback mode refers to selecting an optimal CSI feedback configuration from the CSI feedback configuration group, and feeding back CSI measured based on the optimal CSI feedback configuration in the CSI feedback configuration group, and the optimal CSI feedback configuration in the CSI feedback. Configure location information in the group.
  • the location information of the optimal CSI feedback configuration in the CSI feedback configuration group may be represented by multiple representations. Two preferred modes are described below:
  • the first location representation manner the location information of the optimal CSI feedback configuration in the CSI feedback configuration group specifically refers to an index of the optimal CSI feedback configuration in the CSI feedback configuration group;
  • each CSI feedback configuration in the CSI feedback configuration group is corresponding to one location in the sequence of the location, and the location information of the optimal CSI feedback configuration in the CSI feedback configuration group specifically refers to an optimal one.
  • the CSI feedback configures a bit value of a corresponding position on the position sequence of the CSI feedback configuration group.
  • the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group.
  • the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group according to the number of CSI feedback configurations included in the CSI feedback configuration group.
  • the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group according to the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback.
  • the group uses the second feedback method.
  • the number of CSI feedback configurations that need to perform CSI feedback in the CSI feedback configuration group may be determined by one of the following three modes: mode a1, mode a2, and mode a3:
  • the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback is pre-agreed. For example, it may be pre-defined by standards or pre-scheduled by other means through network devices and terminals. In this case, the terminal may determine the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback according to the foregoing pre-agreed content.
  • the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback is configured by the network device.
  • the number of the CSI feedback configuration in the CSI feedback configuration group that needs to be used for the CSI feedback may be previously indicated to the terminal as a parameter of the CSI feedback configuration group.
  • the CSI feedback configuration group for CSI feedback indicated by the network device further includes The number of CSI feedback configurations in the CSI feedback configuration group that require CSI feedback.
  • the terminal may determine the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback according to the information configured by the network device.
  • the number of CSI feedback configurations that need to be subjected to CSI feedback in the CSI feedback configuration group is indicated by the indication information included in the trigger signaling of the aperiodic CSI feedback by the network device.
  • the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback is indicated by one bit of information in the trigger signaling.
  • the CSI feedback mode corresponding to the CSI feedback configuration group is determined according to the feedback mode indication information included in the trigger signaling of the received aperiodic CSI feedback.
  • the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group according to the feedback mode indication information corresponding to the CSI feedback configuration group, and each CSI feedback configuration group is configured with feedback mode indication information.
  • the CSI feedback configuration group for CSI feedback indicated by the network device further includes a feedback manner corresponding to the CSI feedback configuration group.
  • the feedback mode indication information corresponding to the CSI feedback configuration group is included in the CSI feedback configuration group. That is, the feedback mode corresponding to the CSI feedback configuration group may be instructed to the terminal as a parameter of the CSI feedback configuration group, that is, the CSI feedback configuration group for the CSI feedback indicated by the network device further includes a feedback manner corresponding to the CSI feedback configuration group.
  • the CSI feedback mode corresponding to the CSI feedback configuration group is determined according to the feedback mode of the CSI feedback configuration group, where the feedback mode of the CSI feedback configuration group includes periodic CSI feedback and aperiodic CSI feedback.
  • the network device may configure, by signaling, whether the terminal performs periodic CSI feedback or aperiodic CSI feedback.
  • the feedback mode of the CSI feedback configuration group is periodic CSI feedback, determining that the CSI feedback mode corresponding to the CSI feedback configuration group is the first feedback mode. Or, if the feedback mode of the CSI feedback configuration group is aperiodic CSI feedback, determining that the CSI feedback mode corresponding to the CSI feedback configuration group is the second feedback mode.
  • the feedback period of the location information is RI.
  • the feedback period is N times, and the physical uplink control channel PUCCH resource location of the location information is the same as the PUCCH resource location of the RI, where N is a positive integer.
  • the location information and the RI are fed back in the same subframe, the location information and the RI time are fed back after joint coding or concatenation.
  • the RI is measured according to an optimal CSI feedback configuration corresponding to the location information fed back in the same subframe.
  • the fed back RI is obtained by performing CSI measurement according to an optimal CSI feedback configuration corresponding to the most recently fed back location information.
  • the precoding matrix indication PMI and/or the channel quality indicator CQI are included in the CSI. Then, the fed PMI and/or CQI is obtained by performing CSI measurement according to the optimal CSI feedback configuration corresponding to the recently fed back location information.
  • the network device after receiving the CSI fed back by the terminal, performs downlink data transmission based on the CSI fed back by the terminal, or performs CSI feedback configuration information update based on the CSI fed back by the terminal.
  • the network device indicates to the terminal a CSI feedback configuration group for the CSI feedback.
  • the terminal After receiving the CSI feedback configuration group, the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group, thereby implementing the terminal.
  • the purpose of performing CSI measurement and feedback is to achieve the purpose of supporting the CSI feedback mode of the network device FD-MIMO and non-FD-MIMO modes.
  • FIG. 4 exemplarily shows a terminal of the present disclosure for performing the above method flow.
  • a terminal provided by an embodiment of the present disclosure includes a receiving unit 401, a determining unit 402, and a processing unit 403.
  • the receiving unit 401 is configured to receive, by the network device, a CSI feedback configuration group for channel state information CSI feedback;
  • a determining unit 402 configured to determine a CSI feedback manner corresponding to the CSI feedback configuration group
  • the processing unit 403 is configured to perform CSI measurement and feedback according to the determined CSI feedback manner.
  • the CSI feedback manner includes a first feedback manner and a second feedback manner.
  • the first feedback mode refers to feedback CSI measured based on all CSI feedback configurations in the CSI feedback configuration group; the second feedback mode refers to selecting an optimal CSI feedback configuration from the CSI feedback configuration group, and the feedback is based on The CSI of the optimal CSI feedback configuration in the CSI feedback configuration group performs measurement of the CSI and the location information of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • processing unit 403 is specifically configured to:
  • the CSI measurement is performed on each CSI feedback configuration in the CSI feedback configuration group, and the TBsize corresponding to each CSI feedback configuration is obtained according to the CSI measurement result, and the CSI feedback corresponding to the determined TBsize with the largest median value of the TBsize is determined.
  • the location information of the optimal CSI feedback configuration in the CSI feedback configuration group specifically refers to:
  • the index of the optimal CSI feedback configuration in the CSI feedback configuration group is the index of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the optimal CSI feedback configures a bit value of the corresponding position on the position sequence of the CSI feedback configuration group, and each CSI feedback configuration in the CSI feedback configuration group corresponds to a position on the sequence of positions.
  • the feedback period of the location information is RI.
  • the feedback period is N times, and the physical uplink control channel PUCCH resource location of the location information is the same as the PUCCH resource location of the RI, where N is a positive integer.
  • the location information and the RI are fed back in the same subframe, the location information and the RI time are fed back after joint coding or concatenation.
  • the RI is measured according to an optimal CSI feedback configuration corresponding to the location information fed back in the same subframe.
  • the fed back RI is obtained by performing CSI measurement according to an optimal CSI feedback configuration corresponding to the most recently fed back location information.
  • the precoding matrix indication PMI and/or the channel quality indicator CQI are included in the CSI. Then, the fed PMI and/or CQI is obtained by performing CSI measurement according to the optimal CSI feedback configuration corresponding to the recently fed back location information.
  • the determining unit 402 is specifically configured to:
  • the CSI feedback mode corresponding to the CSI feedback configuration group is determined according to the feedback mode of the CSI feedback configuration group, where the feedback mode of the CSI feedback configuration group includes periodic CSI feedback and aperiodic CSI feedback.
  • the determining unit 402 is specifically configured to:
  • the CSI feedback configuration group includes a CSI feedback configuration, determining that the CSI feedback configuration group adopts a first feedback manner, where the first feedback manner refers to feeding back CSI corresponding to all CSI feedback configurations in the CSI feedback configuration group; or
  • the second feedback mode is adopted for the CSI feedback configuration group, where the second feedback mode refers to feedback corresponding to the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the CSI and the optimal CSI feedback configure location information in the CSI feedback configuration group.
  • the determining unit 402 is specifically configured to:
  • the first feedback mode is determined for the CSI feedback configuration group
  • the second feedback mode is determined for the CSI feedback configuration group.
  • the first feedback mode refers to the CSI corresponding to all the CSI feedback configurations in the CSI feedback configuration group
  • the second feedback mode refers to the CSI corresponding to the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the CSI feedback configures location information in the CSI feedback configuration group.
  • the number of CSI feedback configurations in the CSI feedback configuration group that require CSI feedback is pre-agreed;
  • the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback is configured by the network device; or
  • the number of CSI feedback configurations that need to be subjected to CSI feedback in the CSI feedback configuration group is indicated by the indication information included in the trigger signaling of the aperiodic CSI feedback by the network device.
  • the feedback mode indication information corresponding to the CSI feedback configuration group is included in the CSI feedback configuration group.
  • the determining unit 402 is specifically configured to:
  • determining that the CSI feedback configuration group corresponding to the CSI feedback configuration group is the first feedback mode, and the first feedback manner refers to feeding back all CSI feedback configurations in the CSI feedback configuration group.
  • Corresponding CSI or
  • the CSI feedback mode corresponding to the CSI feedback configuration group is determined to be the second feedback mode, and the second feedback mode is to feedback the optimal CSI in the CSI feedback configuration group.
  • the CSI corresponding to the feedback configuration and the optimal CSI feedback configure location information in the CSI feedback configuration group.
  • the network device indicates the CSI feedback configuration group for the CSI feedback to the terminal, and after receiving the CSI feedback configuration group, the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group, thereby implementing the terminal.
  • the purpose of performing CSI measurement and feedback is to achieve the purpose of supporting the CSI feedback mode of the network device FD-MIMO and non-FD-MIMO modes.
  • FIG. 5 exemplarily shows a network device for performing the above method flow.
  • a network device provided by an embodiment of the present disclosure includes a sending unit 501, a receiving unit 502, and a processing unit 503.
  • a sending unit 501 configured to indicate, by the terminal, a CSI feedback configuration group for channel state information CSI feedback;
  • the receiving unit 502 is configured to receive, by the terminal, CSI obtained by performing CSI measurement according to the determined CSI feedback manner corresponding to the CSI feedback configuration group.
  • the processing unit 503 is configured to perform downlink data transmission based on the received CSI fed back by the terminal, or perform CSI feedback configuration information update based on the CSI fed back by the terminal.
  • the CSI feedback manner includes a first feedback manner and a second feedback manner.
  • the first feedback mode refers to feedback CSI measured based on all CSI feedback configurations in the CSI feedback configuration group; the second feedback mode refers to selecting an optimal CSI feedback configuration from the CSI feedback configuration group, and the feedback is based on The CSI of the optimal CSI feedback configuration in the CSI feedback configuration group performs measurement of the CSI and the location information of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the location information of the optimal CSI feedback configuration in the CSI feedback configuration group specifically refers to:
  • the index of the optimal CSI feedback configuration in the CSI feedback configuration group is the index of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the optimal CSI feedback configures a bit value of the corresponding position on the position sequence of the CSI feedback configuration group, and each CSI feedback configuration in the CSI feedback configuration group corresponds to a position on the sequence of positions.
  • the sending unit 501 is specifically configured to:
  • the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback is carried in advance with the CSI feedback configuration group to the terminal.
  • the sending unit 501 is specifically configured to:
  • the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group according to the feedback mode indication information corresponding to the CSI feedback configuration group, and each CSI feedback configuration group corresponding configuration There is feedback mode indication information.
  • the sending unit 501 is specifically configured to:
  • the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group according to the feedback mode of the CSI feedback configuration group, where the feedback mode of the CSI feedback configuration group includes periodic CSI feedback And aperiodic CSI feedback.
  • the sending unit 501 is configured to indicate, by using the indication information included in the trigger signaling of the aperiodic CSI feedback, the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback.
  • the feedback mode indication information corresponding to the CSI feedback configuration group is included in the CSI feedback configuration group, and the sending unit 501 indicates to the terminal that the CSI feedback configuration group indicates the feedback mode indication information corresponding to the CSI feedback configuration group in advance. terminal.
  • the feedback period of the location information is RI.
  • the feedback period is N times, and the physical uplink control channel PUCCH resource location of the location information is the same as the PUCCH resource location of the RI, where N is a positive integer.
  • the location information and the RI are fed back in the same subframe, the location information and the RI time are fed back after joint coding or concatenation.
  • the RI is measured according to an optimal CSI feedback configuration corresponding to the location information fed back in the same subframe.
  • the fed back RI is obtained by performing CSI measurement according to an optimal CSI feedback configuration corresponding to the most recently fed back location information.
  • the precoding matrix indication PMI and/or the channel quality indicator CQI are included in the CSI. Then, the fed PMI and/or CQI is obtained by performing CSI measurement according to the optimal CSI feedback configuration corresponding to the recently fed back location information.
  • the network device indicates the CSI feedback configuration group for the CSI feedback to the terminal, and after receiving the CSI feedback configuration group, the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group, thereby implementing the terminal.
  • the purpose of performing CSI measurement and feedback is to achieve the purpose of supporting the CSI feedback mode of the network device FD-MIMO and non-FD-MIMO modes.
  • FIG. 6 exemplarily shows that an embodiment of the present disclosure provides a terminal for performing The above method flow is performed.
  • a terminal provided by an embodiment of the present disclosure includes a processor 600, a transceiver 601, and a memory 602.
  • the processor 600 is configured to read a program in the memory 602 and perform the following process:
  • the transceiver 601 is configured to receive and transmit data under the control of the processor 600.
  • the CSI feedback manner includes a first feedback manner and a second feedback manner.
  • the first feedback mode refers to feedback CSI measured based on all CSI feedback configurations in the CSI feedback configuration group; the second feedback mode refers to selecting an optimal CSI feedback configuration from the CSI feedback configuration group, and the feedback is based on The CSI of the optimal CSI feedback configuration in the CSI feedback configuration group performs measurement of the CSI and the location information of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • processor 600 is specifically configured to:
  • the CSI measurement is performed on each CSI feedback configuration in the CSI feedback configuration group, and the TBsize corresponding to each CSI feedback configuration is obtained according to the CSI measurement result, and the CSI feedback corresponding to the determined TBsize with the largest median value of the TBsize is determined.
  • the location information of the optimal CSI feedback configuration in the CSI feedback configuration group specifically refers to:
  • the index of the optimal CSI feedback configuration in the CSI feedback configuration group is the index of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the optimal CSI feedback configures a bit value of the corresponding position on the position sequence of the CSI feedback configuration group, and each CSI feedback configuration in the CSI feedback configuration group corresponds to a position on the sequence of positions.
  • the feedback period of the location information is RI.
  • the feedback period is N times, and the physical uplink control channel PUCCH resource location of the location information is the same as the PUCCH resource location of the RI, where N is a positive integer.
  • the location information and the RI are fed back in the same subframe, the location information and the RI time are fed back after joint coding or concatenation.
  • the RI is measured according to an optimal CSI feedback configuration corresponding to the location information fed back in the same subframe.
  • the fed back RI is obtained by performing CSI measurement according to an optimal CSI feedback configuration corresponding to the most recently fed back location information.
  • the precoding matrix indication PMI and/or the channel quality indicator CQI are included in the CSI. Then, the fed PMI and/or CQI is obtained by performing CSI measurement according to the optimal CSI feedback configuration corresponding to the recently fed back location information.
  • processor 600 is specifically configured to:
  • the CSI feedback mode corresponding to the CSI feedback configuration group is determined according to the feedback mode of the CSI feedback configuration group, where the feedback mode of the CSI feedback configuration group includes periodic CSI feedback and aperiodic CSI feedback.
  • processor 600 is specifically configured to:
  • the CSI feedback configuration group includes a CSI feedback configuration, determining that the CSI feedback configuration group adopts a first feedback manner, where the first feedback manner refers to feeding back CSI corresponding to all CSI feedback configurations in the CSI feedback configuration group; or
  • the second feedback mode is adopted for the CSI feedback configuration group, where the second feedback mode refers to feedback corresponding to the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the CSI and the optimal CSI feedback configure location information in the CSI feedback configuration group.
  • processor 600 is specifically configured to:
  • the first feedback mode is determined for the CSI feedback configuration group
  • the second feedback mode is determined for the CSI feedback configuration group.
  • the first feedback mode refers to the CSI corresponding to all the CSI feedback configurations in the CSI feedback configuration group
  • the second feedback mode refers to the CSI corresponding to the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the CSI feedback configures location information in the CSI feedback configuration group.
  • the number of CSI feedback configurations in the CSI feedback configuration group that require CSI feedback is pre-agreed;
  • the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback is configured by the network device; or
  • the number of CSI feedback configurations that need to be subjected to CSI feedback in the CSI feedback configuration group is indicated by the indication information included in the trigger signaling of the aperiodic CSI feedback by the network device.
  • the feedback mode indication information corresponding to the CSI feedback configuration group is included in the CSI feedback configuration group.
  • processor 600 is specifically configured to:
  • determining that the CSI feedback configuration group corresponding to the CSI feedback configuration group is the first feedback mode, and the first feedback manner refers to feeding back all CSI feedback configurations in the CSI feedback configuration group.
  • Corresponding CSI or
  • the CSI feedback mode corresponding to the CSI feedback configuration group is determined to be the second feedback mode, and the second feedback mode is to feedback the optimal CSI in the CSI feedback configuration group.
  • the CSI corresponding to the feedback configuration and the optimal CSI feedback configure location information in the CSI feedback configuration group.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 600 and various circuits of memory represented by memory 602.
  • 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 601 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 600 is responsible for managing the bus architecture and general processing, and the memory 602 can store data used by the processor 600 in performing operations.
  • the network device indicates the CSI feedback configuration group for the CSI feedback to the terminal, and after receiving the CSI feedback configuration group, the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group, thereby implementing the terminal.
  • the purpose of performing CSI measurement and feedback is to achieve the purpose of supporting the CSI feedback mode of the network device FD-MIMO and non-FD-MIMO modes.
  • FIG. 7 exemplarily shows a network device for performing the above method flow.
  • a network device provided by an embodiment of the present disclosure includes a processor 700, a transceiver 701, and a memory 702.
  • the processor 700 is configured to read a program in the memory 702 and perform the following process:
  • the receiving terminal performs CSI measurement based on the CSI feedback manner corresponding to the CSI feedback configuration group;
  • the transceiver 701 is configured to receive and transmit data under the control of the processor 700.
  • the CSI feedback manner includes a first feedback manner and a second feedback manner.
  • the first feedback mode refers to feedback CSI measured based on all CSI feedback configurations in the CSI feedback configuration group; the second feedback mode refers to selecting an optimal CSI feedback configuration from the CSI feedback configuration group, and the feedback is based on The CSI of the optimal CSI feedback configuration in the CSI feedback configuration group performs measurement of the CSI and the location information of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the location information of the optimal CSI feedback configuration in the CSI feedback configuration group specifically refers to:
  • the index of the optimal CSI feedback configuration in the CSI feedback configuration group is the index of the optimal CSI feedback configuration in the CSI feedback configuration group.
  • the optimal CSI feedback configures a bit value of the corresponding position on the position sequence of the CSI feedback configuration group, and each CSI feedback configuration in the CSI feedback configuration group corresponds to a position on the sequence of positions.
  • the feedback period of the location information is RI.
  • the feedback period is N times, and the physical uplink control channel PUCCH resource location of the location information is the same as the PUCCH resource location of the RI, where N is a positive integer.
  • the location information and the RI are fed back in the same subframe, the location information and the RI time are fed back after joint coding or concatenation.
  • the RI is measured according to an optimal CSI feedback configuration corresponding to the location information fed back in the same subframe.
  • the fed back RI is obtained by performing CSI measurement according to an optimal CSI feedback configuration corresponding to the most recently fed back location information.
  • the PSI in the CSI feedback configuration in the feed configuration group includes a precoding matrix indication PMI and/or a channel quality indicator CQI, and the fed PMI and/or CQI is the most corresponding to the most recently fed back location information.
  • the excellent CSI feedback configuration is obtained by CSI measurement.
  • processor 700 is specifically configured to:
  • the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback is carried in advance with the CSI feedback configuration group to the terminal.
  • processor 700 is specifically configured to:
  • the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group according to the feedback mode indication information corresponding to the CSI feedback configuration group, and each CSI feedback configuration group corresponding configuration There is feedback mode indication information.
  • processor 700 is specifically configured to:
  • the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group according to the feedback mode of the CSI feedback configuration group, where the feedback mode of the CSI feedback configuration group includes periodic CSI feedback And aperiodic CSI feedback.
  • the processor 700 is configured to indicate, by using the indication information included in the trigger signaling of the aperiodic CSI feedback, the number of CSI feedback configurations in the CSI feedback configuration group that need to perform CSI feedback.
  • the feedback mode indication information corresponding to the CSI feedback configuration group is included in the CSI feedback configuration group, and the processor 700 indicates to the terminal that the CSI feedback configuration group in advance indicates the feedback mode indication information corresponding to the CSI feedback configuration group. terminal.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 700 and various circuits of memory represented by memory 702.
  • 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.
  • the transceiver 701 can be a plurality of components. That is, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 700 is responsible for managing the bus architecture and general processing, and the memory 702 can store data used by the processor 700 in performing operations.
  • the network device indicates the CSI feedback configuration group for the CSI feedback to the terminal, and after receiving the CSI feedback configuration group, the terminal determines the CSI feedback mode corresponding to the CSI feedback configuration group, thereby implementing the terminal.
  • the purpose of performing CSI measurement and feedback is to achieve the purpose of supporting the CSI feedback mode of the network device FD-MIMO and non-FD-MIMO modes.
  • embodiments of the present disclosure may be provided as a method, or a computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware aspects. Moreover, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • a computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • 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. Having a series of operational steps performed on a computer or other programmable device to produce computer-implemented processing such that instructions executed on a computer or other programmable device are provided for implementing one or more processes and/or block diagrams in the flowchart. The steps of a function specified in a box or multiple boxes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention se rapporte au domaine des communications et concerne en particulier, dans certains modes de réalisation,%%%un procédé de renvoi d'informations d'état de canal et un terminal. Le procédé de renvoi d'informations d'état de canal comporte les étapes consistant à: permettre à un terminal de déterminer, d'après des informations reçues servant à renvoyer des CSI, un mode de renvoi de CSI, et effectuer, selon le mode de renvoi de CSI déterminé, la mesure et le renvoi de CSI. Dans les modes de réalisation de la présente invention, un dispositif de réseau indique un groupe d'attribution de renvoi de CSI pour renvoyer des CSI à un terminal, et le terminal détermine un mode de renvoi de CSI correspondant au groupe d'attribution de renvoi de CSI après que le terminal a reçu le groupe d'attribution de renvoi de CSI.
PCT/CN2016/081729 2015-05-21 2016-05-11 Procédé de renvoi d'informations d'état de canal et terminal Ceased WO2016184335A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2017560695A JP6581216B2 (ja) 2015-05-21 2016-05-11 チャネル状態情報フィードバック方法および端末
KR1020177034962A KR102138649B1 (ko) 2015-05-21 2016-05-11 채널 상태 정보의 피드백 방법과 단말기
US15/576,273 US10511984B2 (en) 2015-05-21 2016-05-11 Channel state information feedback method and terminal
EP16795822.2A EP3300280B1 (fr) 2015-05-21 2016-05-11 Procédé de renvoi d'informations d'état de canal et terminal

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201510263161.4 2015-05-21
CN201510263161 2015-05-21
CN201510282902.3 2015-05-28
CN201510282902.3A CN106301509B (zh) 2015-05-21 2015-05-28 一种信道状态信息反馈方法和终端

Publications (1)

Publication Number Publication Date
WO2016184335A1 true WO2016184335A1 (fr) 2016-11-24

Family

ID=57319479

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/081729 Ceased WO2016184335A1 (fr) 2015-05-21 2016-05-11 Procédé de renvoi d'informations d'état de canal et terminal

Country Status (1)

Country Link
WO (1) WO2016184335A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180102322A (ko) * 2017-03-07 2018-09-17 삼성전자주식회사 다중 안테나 시스템에서의 피드백 장치 및 방법
WO2019111590A1 (fr) * 2017-12-06 2019-06-13 シャープ株式会社 Dispositif de station de base, dispositif terminal et procédé de communication

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130077581A1 (en) * 2011-09-23 2013-03-28 Samsung Electronics Co. Ltd. Method and apparatus for transmitting and receiving feedback for cooperative communication system
CN103166734A (zh) * 2011-12-14 2013-06-19 华为技术有限公司 信道状态信息的获取方法及装置
CN103546208A (zh) * 2012-07-09 2014-01-29 电信科学技术研究院 一种非周期信道状态信息的传输方法、设备及系统
CN103840907A (zh) * 2012-11-20 2014-06-04 电信科学技术研究院 一种传输导频信号和信号测量的方法、系统及设备
CN104380641A (zh) * 2012-05-31 2015-02-25 株式会社Ntt都科摩 无线通信系统、无线基站装置以及无线通信方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130077581A1 (en) * 2011-09-23 2013-03-28 Samsung Electronics Co. Ltd. Method and apparatus for transmitting and receiving feedback for cooperative communication system
CN103166734A (zh) * 2011-12-14 2013-06-19 华为技术有限公司 信道状态信息的获取方法及装置
CN104380641A (zh) * 2012-05-31 2015-02-25 株式会社Ntt都科摩 无线通信系统、无线基站装置以及无线通信方法
CN103546208A (zh) * 2012-07-09 2014-01-29 电信科学技术研究院 一种非周期信道状态信息的传输方法、设备及系统
CN103840907A (zh) * 2012-11-20 2014-06-04 电信科学技术研究院 一种传输导频信号和信号测量的方法、系统及设备

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180102322A (ko) * 2017-03-07 2018-09-17 삼성전자주식회사 다중 안테나 시스템에서의 피드백 장치 및 방법
KR102189161B1 (ko) 2017-03-07 2020-12-09 삼성전자주식회사 다중 안테나 시스템에서의 피드백 장치 및 방법
WO2019111590A1 (fr) * 2017-12-06 2019-06-13 シャープ株式会社 Dispositif de station de base, dispositif terminal et procédé de communication

Similar Documents

Publication Publication Date Title
TWI606704B (zh) Channel state information feedback method and terminal
CN106411374B (zh) 一种fd mimo系统信道状态信息反馈方法及相关设备
US9998194B2 (en) Processing method for channel state information, base station and terminal
EP3565140B1 (fr) Procédé de rétroaction d'informations d'état de canal, équipement utilisateur et station de base
EP3282596A1 (fr) Procédé de sélection de faisceau, station mobile et station de base
CN106301692B (zh) 一种信道状态信息获取方法及装置
WO2017020730A1 (fr) Procédé et dispositif de rétroaction et de réception d'informations d'état de canal
WO2017050084A1 (fr) Procédé de notification d'informations et procédé d'exécution de traitement d'informations d'état de canal
CN107294582A (zh) 信道状态信息反馈的获取方法、相关设备及系统
WO2016184335A1 (fr) Procédé de renvoi d'informations d'état de canal et terminal
WO2016106696A1 (fr) Procédé de rétroaction d'indicateur de matrice de précodage (pmi)
CN112054831B (zh) 信道状态信息的反馈方法及装置
CN117042179A (zh) Csi上报的方法、终端、网络设备、装置及存储介质

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16795822

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2017560695

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 15576273

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20177034962

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2016795822

Country of ref document: EP