WO2022048400A1 - Procédé et appareil de rétroaction de canal - Google Patents

Procédé et appareil de rétroaction de canal Download PDF

Info

Publication number
WO2022048400A1
WO2022048400A1 PCT/CN2021/111280 CN2021111280W WO2022048400A1 WO 2022048400 A1 WO2022048400 A1 WO 2022048400A1 CN 2021111280 W CN2021111280 W CN 2021111280W WO 2022048400 A1 WO2022048400 A1 WO 2022048400A1
Authority
WO
WIPO (PCT)
Prior art keywords
information
channel state
superposition coefficient
superposition
coefficient
Prior art date
Application number
PCT/CN2021/111280
Other languages
English (en)
Chinese (zh)
Inventor
葛士斌
金黄平
Original Assignee
华为技术有限公司
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
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2022048400A1 publication Critical patent/WO2022048400A1/fr

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
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/0486—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking channel rank into account
    • 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
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a channel feedback method and device.
  • the 5G communication system has higher requirements on system capacity and spectral efficiency.
  • massive multiple input multiple output (MIMO) plays a crucial role in the spectral efficiency of the system.
  • MIMO technology when the base station transmits data to a user equipment (UE), modulation coding and signal precoding need to be performed. How to send data to users depends on channel state information (CSI).
  • CSI channel state information
  • the current CSI acquisition solutions are all implemented for a single user. When the number of users is relatively large, the feedback overhead is relatively large.
  • Embodiments of the present application provide a channel feedback method and device, a chip, a computer-readable storage medium, a computer program product, and the like, which are used to solve the problem of relatively large channel feedback overhead in the prior art.
  • a channel feedback method provided by an embodiment of the present application may be applied to a first apparatus, where the first apparatus may be a terminal device, or a chip or a chipset/chip system in the terminal device.
  • the method includes: the first device receives indication information from a third device, the indication information is used to indicate a reporting method, and the reporting method is to report according to at least one item of the following information: the quantization information of the superposition coefficient of the first device needs to be reported Bits, the number of bits to be reported in the quantization information of the superposition coefficient of the first device, where the superposition coefficient of the first device is used to represent the channel state of the first device together with the corresponding base information.
  • the first device performs channel state feedback to the third device based on the indication information.
  • the network device may instruct the terminal devices with channel similarity to report some bits in the quantization information of the superposition coefficients, compared to all the bits in the quantization information of the superposition coefficients reported. bit, the repeated reporting of the same information can be reduced, thereby reducing the CSI feedback overhead.
  • the first means corresponds to at least one superposition coefficient.
  • the indication information is also used to indicate a superposition coefficient to be reported in the at least one superposition coefficient in a reporting manner. In the above manner, the channel feedback efficiency can be improved.
  • the first device when it performs channel state feedback to the third device based on the indication information, it may send channel state feedback information to the third device, where the channel state feedback information includes at least one of the following information: the first superposition The quantization information of the coefficient, the base information corresponding to the first superposition coefficient, and the information indicated by the reporting method in the quantization information of the second superposition coefficient, the second superposition coefficient is the superposition coefficient indicated by the indication information, and the first superposition coefficient is at least one superposition coefficient. Divide the superposition coefficient indicated by the indication information. In the above manner, for the superposition coefficient reported in the above reporting manner, the terminal device may not report the base information corresponding to the superposition coefficient when performing channel feedback, thereby further reducing feedback overhead.
  • the channel state feedback information includes at least one of the following information: the first superposition The quantization information of the coefficient, the base information corresponding to the first superposition coefficient, and the information indicated by the reporting method in the quantization information of the second superposition coefficient
  • the second superposition coefficient is the superposition coefficient indicated by the indication
  • the bits to be reported in the superposition coefficient of the first device may be: bits in the quantization information of the superposition coefficient of the first device that have different values than the quantization information of the superposition coefficient of the second device bit, the superposition coefficient of the first device corresponds to the same basis information as the superposition coefficient of the second device.
  • the terminal device can save signaling overhead compared to reporting all bits.
  • the quantization information of the superposition coefficient of the first device may include at least one item of the following information: at least one bit for indicating the phase, and at least one bit for indicating the amplitude.
  • the quantization information of the superposition coefficient of the second device may include at least one item of the following information: at least one bit for indicating the phase, and at least one bit for indicating the amplitude.
  • a communication method provided by an embodiment of the present application may be applied to a third apparatus, and the third apparatus may be a network device, or a chip or a chipset/chip system in the network device.
  • the method includes: a third device generates indication information, the indication information is used to indicate a reporting method, and the reporting method is to report according to at least one of the following information: bits to be reported in the quantization information of the superposition coefficient of the first device, the first The number of bits to be reported in the quantization information of the superposition coefficient of the device, where the superposition coefficient of the first device is used to represent the channel state of the first device together with the corresponding base information.
  • the third device sends the indication information to the first device.
  • the network device may instruct the terminal devices with channel similarity to report some bits in the quantization information of the superposition coefficients, compared to all the bits in the quantization information of the superposition coefficients reported. bit, the repeated reporting of the same information can be reduced, thereby reducing the CSI feedback overhead.
  • the first means corresponds to at least one superposition coefficient.
  • the indication information is also used to indicate a superposition coefficient to be reported in the at least one superposition coefficient in a reporting manner. In the above manner, the flexibility of channel feedback can be improved.
  • the third device may receive channel state feedback information from the first device, where the channel state feedback information includes at least one of the following information: the first The quantization information of the superposition coefficient, the base information corresponding to the first superposition coefficient, and the information indicated by the reporting method in the quantization information of the second superposition coefficient, the second superposition coefficient is the superposition coefficient indicated by the indication information, and the first superposition coefficient is at least one superposition coefficient Divide the superposition coefficient indicated by the indication information.
  • the terminal device may not report the base information corresponding to the superposition coefficient when performing channel feedback, thereby further reducing feedback overhead.
  • the quantization information of the superposition coefficient of the first device may include at least one item of the following information: at least one bit for indicating the phase, and at least one bit for indicating the amplitude.
  • the quantization information of the superposition coefficient of the second device may include at least one item of the following information: at least one bit for indicating the phase, and at least one bit for indicating the amplitude.
  • the third device may determine that the substrate information used by the first device is the same as at least one of the substrate information used by the second device. In the above manner, the network device can restore the complete channel state information of the first terminal device according to the channel feedback information reported by the second terminal device and the channel feedback information reported by the first terminal device.
  • the third device when the third device generates the indication information, at least one item of the following bit information may be determined: the value of the quantization information of the superposition coefficient of the first device is compared with the value of the quantization information of the superposition coefficient of the second device In different bits, the quantization information of the superposition coefficient of the first device has the same value as that of the quantization information of the superposition coefficient of the second device, and the superposition coefficient of the first device and the second device The compared superposition coefficients correspond to the same base information; the third device generates indication information according to the determined bit information.
  • the network device by instructing the first terminal device to report different bits, the network device can restore the complete information of the first terminal device according to the same bits reported by the second terminal device.
  • the third device when the third device determines that the base information used by the first device is the same as at least one of the base information used by the second device, it may be based on the uplink channel characteristics of the first device and the uplink channel characteristics of the second device. Channel characteristics, determine that the base information used by the first device is the same as at least one of the base information used by the second device.
  • the network device can determine the correlation of the downlink channel according to the characteristics of the uplink channel.
  • the third device when the third device determines that the base information used by the first device is the same as at least one of the base information used by the second device, it may be based on the channel measurement result historically reported by the first device and the second device Based on the historically reported channel measurement results, it is determined that the base information used by the first device is the same as at least one of the base information used by the second device.
  • the network device may determine the correlation of the downlink channel according to the characteristics of the uplink channel.
  • a channel feedback method provided by an embodiment of the present application can be applied to a first device, where the first device is a terminal device, or a chip or a chipset/chip system in the terminal device.
  • the method includes: the first device receives second channel state information from the second device, the second channel state information includes at least one superposition coefficient of the second device, wherein any superposition coefficient in the second channel state information is used to combine with The corresponding base information collectively represents the channel state of the second device; the first device performs channel state feedback to the third device based on the second channel state information and the first channel state information, and the first channel state information includes at least one superposition of the first device. coefficient, any superposition coefficient in the first channel state information is used to jointly characterize and determine the channel state of the first device together with the corresponding base information.
  • the first terminal device can select the content to be reported according to its own channel state information and the channel state information of the second terminal device, compared with the quantization information of the reported superposition coefficient. All bits of , can reduce repeated reporting of the same information, thereby reducing CSI feedback overhead.
  • the first device when the first device performs channel state feedback to the third device based on the second channel state information and the first channel state information, the first device may send the quantization of the superposition coefficient included in the first channel state information to the third device All bits of the information, all bits of the quantization information of the first superposition coefficient in the second channel state information, and some bits of the quantization information of the second superposition coefficient in the second channel state information.
  • the first terminal device may report the channel state information of the two terminal devices, and only some bits are reported for some superposition coefficients when reporting. , so that the CSI feedback overhead can be reduced.
  • the first superposition coefficient is different from the base information corresponding to any superposition coefficient in the first channel state information.
  • the second superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the first channel state information.
  • Part of the bits are bits in the quantization information of the second superposition coefficient that have different values than the quantization information of the superposition coefficient in the first channel state information, and the second superposition coefficient corresponds to the superposition coefficient compared in the first channel state information.
  • the first device when the first device performs channel state feedback to the third device based on the second channel state information and the first channel state information, the first device may send the quantization of the superposition coefficient included in the second channel state information to the third device All bits of the information, all bits of the quantization information of the third superposition coefficient in the first channel state information, and some bits of the quantization information of the fourth superposition coefficient in the first channel state information.
  • the first terminal device may report the channel state information of the two terminal devices, and only some bits are reported for some superposition coefficients when reporting. , so that the CSI feedback overhead can be reduced.
  • the third superposition coefficient is different from the base information corresponding to any superposition coefficient in the second channel state information.
  • the fourth superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the second channel state information.
  • Some of the bits are bits in the quantization information of the fourth superposition coefficient that have different values than the quantization information of the superposition coefficient in the second channel state information, and the fourth superposition coefficient corresponds to the superposition coefficient compared in the second channel state information.
  • the first device when the first device performs channel state feedback to the third device based on the second channel state information and the first channel state information, the first device may send the quantization of the superposition coefficient included in the first channel state information to the third device All bits of information. After receiving the second channel state information from the second device, the first device may send the first information to the second device, where the first information is used to indicate a part of the quantization information of the second superposition coefficient included in the second channel state information bits.
  • the first terminal device may report the channel state information of its own terminal device, and instruct the second terminal device to target some superposition coefficients when reporting. Only some bits are reported, so that the CSI feedback overhead can be reduced.
  • the second superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the first channel state information.
  • Part of the bits are bits in the quantization information of the second superposition coefficient that have different values than the quantization information of the superposition coefficient in the first channel state information, and the superposition coefficient of the second superposition coefficient compared with the first channel state information Corresponding to the same base information.
  • the first device when the first device performs channel state feedback to the third device based on the second channel state information and the first channel state information, the first device may send the quantization of the superposition coefficient included in the first channel state information to the third device All bits of the information and some bits of the quantization information of the second superposition coefficient included in the second channel state information.
  • the first terminal device may report all bits of the quantization information of the superposition coefficient of the first terminal device and some superimposed bits in the second terminal device. special bits of coefficients, so that the CSI feedback overhead can be reduced.
  • the second superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the first channel state information; some bits in the quantization information of the second superposition coefficient are compared with those in the first channel state information. Bits with different quantization information of the superposition coefficients have different values, and the second superposition coefficient corresponds to the same base information as the superposition coefficient compared with the superposition coefficient in the first channel state information.
  • the network device can restore the channel similarity of the second terminal device according to the common bits of the superposition coefficient with channel similarity of the first terminal device. The full bits of the superposition coefficient of similarity.
  • the first device may also send second information to the second device, where the second information is used to indicate the first superposition coefficient included in the second channel state information.
  • the first device indicates the partial superposition coefficient of the second device, so that the second device can report the partial superposition coefficient.
  • the first superposition coefficient is different from the base information corresponding to any superposition coefficient in the first channel state information.
  • the second device may report the part of the superposition coefficient by indicating the different superposition coefficients of the base information of the second device.
  • the quantization information of the superposition coefficient included in the first channel state information includes at least one item of the following information: at least one bit for indicating phase and at least one bit for indicating amplitude.
  • the quantization information of the superposition coefficient included in the second channel state information includes at least one item of the following information: at least one bit for indicating the phase and at least one bit for indicating the amplitude.
  • the second channel state information further includes base information respectively corresponding to at least one superposition coefficient of the second device.
  • the first channel state information further includes basis information respectively corresponding to at least one superposition coefficient of the first device.
  • a channel feedback method provided by an embodiment of the present application can be applied to a first device, where the first device is a terminal device, or a chip or a chipset/chip system in the terminal device.
  • the method includes: the first device receives second channel state information from the second device, the second channel state information includes at least one superposition coefficient of the second device, wherein any superposition coefficient in the second channel state information is used to combine with The corresponding base information collectively characterizes the channel state of the second device.
  • the first device sends the first channel state information and the first information to the second device, where the first information is used to indicate part of the bits in the quantization information of the second superposition coefficient included in the second channel state information, wherein the first channel state includes At least one superposition coefficient of the first device, and any superposition coefficient in the first channel state information is used to jointly represent and determine the channel state of the first device with the corresponding base information.
  • the first terminal device can instruct the second terminal device to select the reported content according to its own channel state information and the channel state information of the second terminal device.
  • the two terminal equipments report all bits of the quantization information of the superposition coefficient, which can reduce the repeated reporting of the same information, thereby reducing the CSI feedback overhead.
  • the second superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the first channel state information; some bits in the quantization information of the second superposition coefficient are compared with those in the first channel state information.
  • the quantization information of the superposition coefficient takes bits with different values, and the second superposition coefficient corresponds to the same base information as the superposition coefficient compared with the first channel state information.
  • the first apparatus may further send second information to the second apparatus, where the second information is used to indicate the first superposition coefficient included in the second channel state information.
  • the second device can also report other superposition coefficients.
  • the first superposition coefficient is different from the base information corresponding to any superposition coefficient in the first channel state information.
  • the second device can also report different superposition coefficients of the base information.
  • the quantization information of the superposition coefficient included in the first channel state information includes at least one item of the following information: at least one bit for indicating phase and at least one bit for indicating amplitude.
  • the quantization information of the superposition coefficient included in the second channel state information includes at least one item of the following information: at least one bit for indicating the phase and at least one bit for indicating the amplitude.
  • the second channel state information further includes base information respectively corresponding to at least one superposition coefficient of the second device.
  • the first channel state information further includes basis information respectively corresponding to at least one superposition coefficient of the first device.
  • a channel feedback method provided by an embodiment of the present application may be applied to a first device, and the first device may be a terminal device, or a chip or a chipset/chip system in the terminal device.
  • the method includes: the first device receives second channel state information from the second device, the second channel state information includes at least one superposition coefficient of the second device, wherein any superposition coefficient in the second channel state information is used to combine with The corresponding base information collectively characterizes the channel state of the second device.
  • the first device sends fourth information and fifth information to the second device, where the fourth information is used to indicate some bits in the quantization information of the fourth superposition coefficient of the first device, and the fifth information is used to indicate the third Superposition factor.
  • the first terminal device can instruct the second terminal device to select the reported content according to its own channel state information and the channel state information of the second terminal device.
  • the two terminal equipments report all bits of the quantization information of the superposition coefficient, which can reduce the repeated reporting of the same information, thereby reducing the CSI feedback overhead.
  • the third superposition coefficient is different from the base information corresponding to any superposition coefficient of the second device.
  • the fourth superposition coefficient is the same as the base information corresponding to at least one superposition coefficient of the second device.
  • Some of the bits may be bits of the quantization information of the fourth superposition coefficient that have different values than the quantization information of the superposition coefficient of the second device, and the fourth superposition coefficient and the superposition coefficient of the second device to be compared correspond to the same base. information.
  • the quantization information of the superposition coefficient of the first device includes at least one item of the following information: at least one bit for indicating the phase and at least one bit for indicating the amplitude.
  • the quantization information of the superposition coefficient of the second device includes at least one item of the following information: at least one bit for indicating the phase, and at least one bit for indicating the amplitude.
  • the second channel state information further includes base information respectively corresponding to at least one superposition coefficient of the second device.
  • a channel feedback method provided by an embodiment of the present application may be applied to a second device, and the second device may be a terminal device, or a chip or a chipset/chip system in the terminal device.
  • the method includes: the second device sends second channel state information to the first device, the second channel state information includes at least one superposition coefficient of the second device, wherein any superposition coefficient in the second channel state information is used to correspond to
  • the base information of the second device collectively represents the channel state of the second device; the second device receives the third information from the first device, and the third information is used to indicate the information reported by the second device to the third device; the second device reports to the third device according to the third information.
  • the third device sends feedback information.
  • the first terminal device can indicate the content reported by the second terminal device based on the correlation of channel characteristics between the terminal devices. Compared with reporting all bits of the quantization information of the superposition coefficient, repeated reporting of the same information can be reduced. , so that the CSI feedback overhead can be reduced.
  • the third information includes first information, and the first information is used to indicate part of the bits in the quantization information of the second superposition coefficient included in the second channel state information; the feedback information includes that the second channel state information includes Part of the bits in the quantization information of the second superposition coefficient.
  • the second terminal device only reports some bits for some superposition coefficients when reporting, so that the CSI feedback overhead can be reduced.
  • the second superposition coefficient is the same as base information corresponding to at least one superposition coefficient in the first channel state information, wherein the first channel state information includes at least one superposition coefficient of the first device, and the first channel state information Any superposition coefficient in the information is used to jointly characterize and determine the channel state of the first device with the corresponding base information; some bits are the quantization information of the superposition coefficient in the quantization information of the second superposition coefficient compared to the superposition coefficient in the first channel state information For different bits, the second superposition coefficient corresponds to the same base information as the superposition coefficient in the first channel state information.
  • the third device can restore the channel similarity of the second device according to the common bit of the superposition coefficient with channel similarity of the first device.
  • the full bits of the superposition coefficients are
  • the third information further includes first channel state information; and the feedback information further includes first channel state information.
  • the channel state information of the first device may also be reported by the second device.
  • the third information includes second information, and the second information is used to indicate the first superposition coefficient included in the second channel state information; the feedback information includes the first superposition coefficient included in the second channel state information.
  • the first device indicates the partial superposition coefficient of the second device, so that the second device can report the partial superposition coefficient.
  • the first superposition coefficient is different from the base information corresponding to any superposition coefficient in the first channel state information, wherein the first channel state information includes at least one superposition coefficient of the first device, and the first Any superposition coefficient in the channel state information is used to jointly characterize and determine the channel state of the first device together with the corresponding base information.
  • the second device may report the part of the superposition coefficient by indicating the different superposition coefficients of the base information of the second device.
  • the quantization information of the superposition coefficient included in the first channel state information includes at least one item of the following information: at least one bit for indicating phase and at least one bit for indicating amplitude.
  • the quantization information of the superposition coefficient included in the second channel state information includes at least one item of the following information: at least one bit for indicating the phase and at least one bit for indicating the amplitude.
  • the second channel state information further includes base information respectively corresponding to at least one superposition coefficient of the second device.
  • the first channel state information further includes basis information respectively corresponding to at least one superposition coefficient of the first device.
  • the third information includes fourth information, and the fourth information is used to indicate some bits in the quantization information of the fourth superposition coefficient of the first device.
  • the second device can report some bits of the first device, thereby saving feedback overhead.
  • the fourth superposition coefficient is the same as the base information corresponding to at least one superposition coefficient of the second device.
  • Some of the bits may be bits of the quantization information of the fourth superposition coefficient that have different values than the quantization information of the superposition coefficient of the second device, and the fourth superposition coefficient and the superposition coefficient of the second device to be compared correspond to the same base. information.
  • the second device reports the special bits of the superposition coefficients with the channel similarity of the first device, so that the third device can restore the superposition coefficients of the first device according to the common bits of the superposition coefficients of the channel similarity of the second device all bits of .
  • the third information includes fifth information, and the fifth information is used to indicate the third superposition coefficient of the first device.
  • the second device can report some of the superposition coefficients of the first device, so that feedback overhead can be saved.
  • the third superposition coefficient is different from the base information corresponding to any superposition coefficient of the second device.
  • the second device can report different superposition coefficients of the base information of the first device.
  • the present application provides a channel feedback apparatus, which may be a terminal device, or a chip or a chipset/chip system in the terminal device.
  • the apparatus may include a processing module and a transceiver module.
  • the processing module may be a processor
  • the transceiver module may be a transceiver
  • the apparatus may further include a storage module, and the storage module may be a memory; the storage module is used for storing instructions, and the processing module
  • the instructions stored in the storage module are executed to perform the corresponding functions in the first aspect or the third aspect or the fourth aspect or the fifth aspect or the sixth aspect.
  • the processing module may be a processor, a processing circuit or a logic circuit, etc., and the transceiver module may be an input/output interface, a pin or a circuit, etc.; the processing The module executes the instructions stored in the storage module to perform the corresponding functions in the first aspect or the third aspect or the fourth aspect or the fifth aspect or the sixth aspect.
  • the storage module may be a storage module (eg, register, cache, etc.) within the chip or chipset/chip system, or may be a storage module in the base station located outside the chip or chipset/chip system (eg, only read memory, random access memory, etc.).
  • the present application provides a communication apparatus, and the apparatus may be a network device, or a chip or a chipset/chip system in the network device.
  • the apparatus may include a processing module and a transceiver module.
  • the processing module may be a processor
  • the transceiver module may be a transceiver
  • the apparatus may further include a storage module, and the storage module may be a memory; the storage module is used for storing instructions, and the processing module The instructions stored in the storage module are executed to perform the corresponding functions in the above second aspect.
  • the processing module may be a processor, a processing circuit or a logic circuit, etc., and the transceiver module may be an input/output interface, a pin or a circuit, etc.; the processing The module executes the instructions stored in the storage module to perform the corresponding function in the above second aspect.
  • the storage module may be a storage module (eg, register, cache, etc.) within the chip or chipset/chip system, or may be a storage module in the base station located outside the chip or chipset/chip system (eg, only read memory, random access memory, etc.).
  • a channel feedback apparatus comprising: at least one processor.
  • a communication interface may also be included.
  • a memory may also be included.
  • the communication interface is used to transfer information, and/or messages, and/or data between the device and other devices.
  • the memory is used to store computer-executable instructions, and when the apparatus is running, the processor executes the computer-executable instructions stored in the memory, so that the apparatus executes the first aspect or any one of the first aspect or the third aspect.
  • the apparatus may be a chip or a chipset/chip system in a terminal device, the processor may be a processing circuit or a logic circuit, etc., and the communication interface may be input and/or output pins or circuits, etc.
  • a communication apparatus comprising: at least one processor.
  • a communication interface may also be included.
  • a memory may also be included.
  • the communication interface is used to transfer information, and/or messages, and/or data between the device and other devices.
  • the memory is used to store computer-executable instructions, and when the apparatus is running, the processor executes the computer-executable instructions stored in the memory, so that the apparatus executes the method described in the second aspect or any design of the second aspect .
  • the apparatus may be a chip or a chipset/chip system in a network device, the processor may be a processing circuit or a logic circuit, or the like, and the communication interface may be an input and/or output pin or circuit, or the like.
  • a computer storage medium provided by an embodiment of the present application stores a program instruction.
  • the program instruction is executed on a communication device, the communication device is made to execute the first to sixth aspects of the embodiment of the present application.
  • a twelfth aspect a computer program product provided by an embodiment of the present application, when the computer program product runs on a communication device, enables the communication device to make any one of the first to sixth aspects and any one of the first to sixth aspects of the embodiment of the present application. possible designs of the method described.
  • a thirteenth aspect is a chip provided by an embodiment of the present application, the chip is coupled with a memory, and a method for executing the first aspect and any possible design thereof, or any of the third aspect or the third aspect of the embodiment of the present application.
  • a fourteenth aspect provides a chip provided by an embodiment of the present application, the chip is coupled with a memory, and a method for implementing the second aspect of the embodiment of the present application and any possible design thereof.
  • an embodiment of the present application provides a chip, including a communication interface and at least one processor, where the processor operates to execute the first aspect and any possible design method or a third method of the embodiment of the present application.
  • the processor operates to execute the first aspect and any possible design method or a third method of the embodiment of the present application.
  • an embodiment of the present application provides a chip, including a communication interface and at least one processor, where the processor operates to execute the method described in the second aspect of the embodiment of the present application and any possible designs thereof.
  • Coupled in the embodiments of the present application means that two components are directly or indirectly combined with each other.
  • FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a gNB according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of communication between a network device and a UE according to an embodiment of the present application
  • FIG. 5 is a schematic flowchart of a CSI measurement provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a channel feedback method provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a channel correlation provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a superposition coefficient with channel correlation provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a channel feature provided by an embodiment of the present application.
  • FIG. 10 is a schematic flowchart of another channel feedback method provided by an embodiment of the present application.
  • FIG. 11 is a schematic flowchart of another channel feedback method provided by an embodiment of the present application.
  • FIG. 12 is a schematic flowchart of another channel feedback method provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 14 is a schematic structural diagram of another communication apparatus provided by an embodiment of the present application.
  • Base information such as channel angle information, time delay information, etc.
  • the base information can be represented by parameters such as space domain base vector, time domain base vector, and frequency domain base vector.
  • each spatial basis vector may correspond to a transmit beam (beam) of the transmitting end device.
  • Spatial basis vectors are usually associated with antenna arrays. For example, many parameters involved in the expression of spatial basis vectors can be understood as being used to characterize different properties of antenna arrays.
  • the frequency domain base vector is used to characterize the variation law of the channel in the frequency domain.
  • the frequency domain basis vector can be specifically used to represent the variation law of the weighting coefficient of each spatial domain basis vector on each frequency domain unit.
  • the variation law represented by the base vector in the frequency domain is related to factors such as multipath delay. It can be understood that, when the signal is transmitted through the wireless channel, the signal may have different transmission delays on different transmission paths.
  • the variation law of the channel in the frequency domain caused by different transmission delays can be characterized by different frequency domain base vectors.
  • the time domain basis vector is used to characterize the variation law of the channel in the time domain. That is, the time-domain basis vector is used to characterize the time-varying channel.
  • the time-varying of the channel means that the transfer function of the channel changes with time.
  • the time-varying channel is related to Doppler shift and other factors.
  • Superposition coefficient The superposition coefficient is used to represent the weight of the base information in the weighted summation.
  • Superposition coefficients include magnitude and phase.
  • the superposition coefficient is ae j ⁇ , where a is the magnitude and ⁇ is the phase.
  • the superposition coefficient fed back by the terminal to the network device is subjected to quantization processing to reduce feedback overhead.
  • the magnitude (or modulus) of the superposition coefficient may be zero, or close to zero.
  • their quantized values may be zero. If the quantized value of the magnitude of the superposition coefficient is 0, the superposition coefficient may be referred to as a superposition coefficient with a zero magnitude.
  • the superposition coefficient may be referred to as a superposition coefficient whose amplitude is not zero.
  • the technical solutions provided in this application can be applied to various communication systems, for example, the Internet of Things (IoT), the narrowband internet of things (NB-IoT), the long term evolution (long term evolution, LTE), it can also be a fifth generation (5G) communication system, it can also be a hybrid architecture of LTE and 5G, it can also be a new radio (NR) system of the 5th generation (5G) and future communication development. new communication systems, etc.
  • the 5G communication system described in this application may include at least one of a non-standalone (NSA) 5G communication system and an independent (standalone, SA) 5G communication system.
  • the communication system may also be a public land mobile network (PLMN) network, a device-to-device (D2D) network, a machine-to-machine (M2M) network, or other networks.
  • PLMN public land mobile network
  • D2D device-to-device
  • M2M machine-to-machine
  • the communication system includes a network device and six terminal devices, taking UE1 to UE6 as an example.
  • UE1-UE6 can send signals to network equipment on the uplink, and the network equipment can receive the uplink signals sent by UE1-UE6.
  • UE4 to UE6 may also form a sub-communication system.
  • the network device may send downlink signals to UE1, UE2, UE3, and UE5 on the downlink.
  • UE5 may send signals to UE4 and UE6 on an inter-terminal link (sidelink, SL) based on the D2D technology.
  • FIG. 1 is only a schematic diagram, and the present application does not specifically limit the type of the communication system, and the number and type of devices included in the communication system.
  • the terminal equipment involved in the embodiments of this application is an entity on the user side that is used to receive or transmit signals.
  • the terminal device may be a device that provides voice and data connectivity to the user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and the like.
  • the terminal device may also be other processing device connected to the wireless modem.
  • Terminal devices can communicate with one or more core networks through a radio access network (RAN).
  • RAN radio access network
  • Terminal equipment may also be referred to as wireless terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , remote terminal, access terminal, user terminal, user agent, user device, or user equipment, etc.
  • Terminal devices may be mobile terminals, such as mobile phones (or “cellular" phones) and computers with mobile terminals, for example, may be portable, pocket-sized, hand-held, computer-built, or vehicle-mounted mobile devices, which are associated with wireless The access network exchanges language and data.
  • the terminal device may also be a personal communication service (PCS) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (personal digital assistant, PDA), and other equipment.
  • Common terminal devices include, for example: mobile phones, tablet computers, notebook computers, PDAs, mobile internet devices (MIDs), wearable devices, such as smart watches, smart bracelets, pedometers, etc. The example is not limited to this.
  • the terminal device involved in the embodiment of the present application may also be a terminal device appearing in a future evolved PLMN, etc., which is not limited in the embodiment of the present application.
  • the terminal device may also be a terminal device in the IoT system.
  • IoT is an important part of the future development of information technology. Interconnection, the intelligent network of the interconnection of things and things.
  • the IoT technology can achieve massive connections, deep coverage, and power saving of terminals through, for example, a narrow band (narrow band, NB) technology.
  • NB narrow band
  • the terminal device may also include sensors such as smart printers, train detectors, and gas stations, and the main functions include collecting data (part of terminal devices), receiving control information and downlink data of network devices, and sending electromagnetic waves. , to transmit uplink data to the network device.
  • sensors such as smart printers, train detectors, and gas stations
  • the main functions include collecting data (part of terminal devices), receiving control information and downlink data of network devices, and sending electromagnetic waves. , to transmit uplink data to the network device.
  • the network device involved in the embodiments of this application is an entity on the network side that is used to transmit or receive signals.
  • the network device in this embodiment of the present application may be a device in a wireless network, for example, a RAN node that accesses a terminal to the wireless network.
  • the network device may be an evolved base station (evolutional Node B, eNB or e-NodeB) in LTE, or a new radio controller (NR controller), or a gNode B (gNB) in the 5G system.
  • eNB evolved base station
  • NR controller new radio controller
  • gNode B gNode B
  • a network device can cover one or more cells.
  • the structure of the network device in this embodiment of the present application may be as shown in FIG. 2 .
  • the radio access network device may be divided into a CU and at least one DU.
  • the CU may be used to manage or control at least one DU, and may also be referred to as being connected to at least one DU.
  • This structure can disassemble the protocol layers of the wireless access network equipment in the communication system. Some of the protocol layers are centrally controlled by the CU, and the remaining part or all of the protocol layer functions are distributed in the DU, and the CU centrally controls the DU.
  • the protocol layer of the gNB includes a radio resource control (RRC) layer, a service data adaptation protocol (SDAP) layer, and a packet data convergence protocol (packet data convergence protocol).
  • RRC radio resource control
  • SDAP service data adaptation protocol
  • packet data convergence protocol packet data convergence protocol
  • PDCP radio link control
  • RLC radio link control
  • MAC media access control sublayer
  • the CU can be used to implement the functions of the RRC layer, the SDAP layer and the PDCP layer
  • the DU can be used to implement the functions of the RLC layer, the MAC layer and the physical layer.
  • the embodiments of the present application do not specifically limit the protocol stacks included in the CU and DU.
  • the CU in this embodiment of the present application may be further divided into one control plane (CU-control plane, CU-CP) network element and multiple user plane (CU-user plane, CU-UP) network elements.
  • CU-CP can be used for control plane management
  • CU-UP can be used for user plane data transmission.
  • the interface between CU-CP and CU-UP can be E1 port.
  • the interface between CU-CP and DU can be F1-C, which is used for the transmission of control plane signaling.
  • the interface between CU-UP and DU can be F1-U, which is used for user plane data transmission.
  • the CU-UP and CU-UP can be connected through the Xn-U port for user plane data transmission.
  • the structure of the gNB may be as shown in FIG. 3 .
  • the communication between the network device and the UE may be as shown in FIG. 4 , and the network device and the UE may exchange RRC signaling through the RRC module.
  • the network device and the UE can exchange media access control control element (MAC CE) signaling through the MAC module.
  • the network device and the UE can exchange uplink/downlink control signaling such as physical uplink control channel (PUCCH)/physical downlink control channel (PDCCH), uplink/downlink data signaling such as physical uplink through PHY Shared channel (physical uplink shared channel, PUSCH)/physical downlink shared channel (physical downlink shared channel, PDSCH), etc.
  • PUCCH physical uplink control channel
  • PDCH physical downlink control channel
  • uplink/downlink data signaling such as physical uplink through PHY Shared channel (physical uplink shared channel, PUSCH)/physical downlink shared channel (physical downlink shared channel, PDSCH), etc.
  • the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application.
  • the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • the 5G communication system has higher requirements on system capacity and spectral efficiency.
  • massive MIMO technology plays a crucial role in the spectral efficiency of the system.
  • modulation coding and signal precoding need to be performed. How the network device sends data to the UE depends on the CSI fed back by the UE to the network device. Therefore, the accuracy of the CSI plays a very important role in the performance of the system.
  • the network device sends channel measurement configuration information to the UE, where the channel measurement configuration information is used for channel measurement configuration, such as configuring reference signals, measurement time, and the like.
  • the network device sends a pilot (also referred to as a downlink reference signal) to the UE, where the pilot is used for downlink channel measurement.
  • a pilot also referred to as a downlink reference signal
  • the UE performs downlink channel measurement according to the pilot frequency sent by the network device, performs calculations such as channel estimation, and feeds back CSI information (such as through the type II codebook in Release 15), which includes rank indicator (rank indicator, RI), channel Specific parameters such as quality indicator (channel quality information, CQI), precoding matrix indicator (precoding matrix indicator, PMI).
  • rank indicator rank indicator, RI
  • channel Specific parameters such as quality indicator (channel quality information, CQI), precoding matrix indicator (precoding matrix indicator, PMI).
  • the network device calculates a precoding vector according to the CSI fed back by the UE, and performs data transmission.
  • the network device determines the relevant configuration for sending data according to the CSI information fed back by the UE in step 3), which may specifically be:
  • the CQI of the UE determines the modulation order of the data transmitted to the UE and the code rate of the channel coding, and the network device determines the precoding of the data transmitted to the UE according to the PMI fed back by the UE.
  • the embodiments of the present application provide a channel feedback method and apparatus to solve the problem.
  • the method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.
  • "for indicating” may include direct indicating and indirect indicating.
  • the indication information may directly indicate I or indirectly indicate I, but it does not mean that the indication information must carry I.
  • the information indicated by the indication information is called the information to be indicated.
  • the information to be indicated can be directly indicated, such as the information to be indicated itself or the information to be indicated. Indicating the index of information, etc.
  • the information to be indicated may also be indirectly indicated by indicating other information, where there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while other parts of the information to be indicated are known or agreed in advance.
  • the indication of specific information can also be implemented by means of a pre-agreed (for example, a protocol stipulation) arrangement order of various pieces of information, so as to reduce the indication overhead to a certain extent.
  • a pre-agreed for example, a protocol stipulation
  • the common part of each piece of information can also be identified and indicated uniformly, so as to reduce the indication overhead caused by indicating the same information separately.
  • a precoding matrix is composed of precoding vectors, and each precoding vector in the precoding matrix may have the same parts in terms of composition or other properties.
  • the specific indication manner may also be various existing indication manners, such as, but not limited to, the above indication manner and various combinations thereof.
  • the required indication mode can be selected according to specific needs.
  • the selected indication mode is not limited in this embodiment of the present application. In this way, the indication mode involved in the embodiment of the present application should be understood as covering the ability to make the indication to be indicated. Various methods for the party to learn the information to be indicated.
  • a channel feedback method is provided in an embodiment of the present application.
  • the method can be applied to the communication system shown in FIG. 1 .
  • the method is performed from the perspectives of both sides of the terminal device and the network device. Description, it should be understood that this does not constitute a limitation to the present application, and the present application has improvements on either side of the terminal device and the network device.
  • the method can be applied to terminal equipment and network equipment, or can also be applied to chips or chipsets/chip systems of terminal equipment and network equipment.
  • the channel measurement method may specifically include:
  • the network device generates indication information, where the indication information is used to indicate a reporting method, and the reporting method is to report according to at least one of the following information: bits to be reported in the quantization information of the superposition coefficient of the first terminal device, the first terminal device The number of bits to be reported in the quantization information of the superposition coefficient.
  • the superposition coefficient of the first terminal device is used to represent the channel state of the first terminal device together with the corresponding base information.
  • the quantization information of the first terminal device may include at least one item of the following information: at least one bit for indicating phase and at least one bit for indicating amplitude.
  • the network device may instruct the first terminal device to report 3 bits, or instruct the first terminal device to report the lowest 3 bits, and so on.
  • the network device may instruct the first terminal device to report 3 bits for quantizing amplitude The least significant bit of the bits, and the least significant 2 bits of the 4 bits used to quantize the phase.
  • the bits to be reported in the superposition coefficient of the first terminal device may be: the value of the quantization information of the superposition coefficient of the first terminal device is different from that of the quantization information of the superposition coefficient of the second terminal device. , the superposition coefficient of the first terminal device and the superposition coefficient of the second terminal device to be compared correspond to the same base information.
  • UE1 and UE2 In a massive user scenario, there are often users with high channel correlation, for example, UE1 and UE2 in FIG. 7 .
  • the channel correlation between UE1 and UE2 is relatively high.
  • the eigenvectors (V1, V2) corresponding to the channels of these two UEs correspond to the same base information (such as angle-delay information).
  • UE1 and UE2 correspond to the same
  • the base information e 1 and e 2 of UE1 is based on the superposition coefficients ⁇ 1 and ⁇ 2 of e 1 and e 2 , which is similar to the superposition coefficients ⁇ 1 and ⁇ 2 of UE2 based on e 1 and e 2 , that is, ⁇ 1 and ⁇ 1
  • ⁇ 2 is similar to ⁇ 2 , as shown in Figure 8.
  • At least one bit in the quantization information of two similar superposition coefficients has the same value.
  • the network device instructs the first terminal device to report the quantization information of the superposition coefficient compared to the quantization of the superposition coefficient of the second terminal device. Bits with different information values can reduce feedback overhead compared to reporting all the bits of the superposition coefficient.
  • the quantization information of the second terminal device may also include at least one item of the following information: at least one bit for indicating the phase, and at least one bit for indicating the amplitude.
  • bits with the same value in the quantization information of the superposition coefficients corresponding to the same base information are called common bits, and the bits with different values in the quantization information of the superposition coefficients corresponding to the same base information are called as common bits. special bits.
  • the indication information may also be used to indicate a superposition coefficient to be reported in a reporting manner.
  • the first terminal device may correspond to at least one superposition coefficient, and the indication information may also be used to indicate a superposition coefficient to be reported in a reporting manner among the at least one superposition coefficient.
  • the quantization information of each superposition coefficient includes 3 bits for quantizing amplitude and 4 bits for quantizing phase.
  • the network device may instruct the first superposition coefficient and the second superposition coefficient to report the lowest bit of the 3 bits used to quantize the amplitude, and the lowest 2 bits of the 4 bits used to quantize the phase, the third superposition coefficient and The fourth superposition coefficient reports all bits.
  • the channel characteristics of the first terminal device Channel characteristics of the second terminal equipment
  • the first terminal device and the second terminal device use the same base information S and F H , and the superposition coefficient of the first terminal device and the superposition factor of the second terminal device similar, suppose, and
  • the quantization information includes 4 bits, where, and In the quantization information of , the first 3 bits from high order to low order are common bits, and the lowest order bits are special bits.
  • the network device may instruct the second terminal device to report All bits of , indicating that the first terminal equipment reports The special bits in , that is, the least significant bit. Therefore, the network device can The common bits in , that is, the first 3 bits from high to low, and The special bits in , ie the least significant bits, recover all the bits of the superposition coefficient of the first terminal device.
  • the network device when the network device generates the indication information, it may be implemented in the following manner: the network device determines at least one item of the following bit information: A special bit in the quantization information of the coefficient; compared with the quantization information of the superposition coefficient of the second terminal device, the common bit in the quantization information of the superposition coefficient of the first terminal device. That is, the bits in the quantization information of the superposition coefficient of the first terminal device are different from those of the quantization information of the superposition coefficient of the second terminal device, and the quantization information of the superposition coefficient of the first terminal device is different from that of the second terminal device.
  • the quantization information of the superposition coefficients of the first terminal device takes the same bits, wherein the superposition coefficients of the first terminal device and the superposition coefficients of the second terminal device that are compared in the superposition coefficients correspond to the same base information.
  • the network device generates indication information according to the determined bit information.
  • the network device sends the indication information to the first terminal device.
  • the first terminal device receives the indication information.
  • the first terminal device performs channel state feedback to the network device based on the indication information.
  • the first terminal device when the first terminal device performs channel state feedback to the network device based on the indication information, it may not report the base information corresponding to the superposition coefficient reported in the above-mentioned reporting manner.
  • the first terminal device when it performs channel state feedback to the network device based on the indication information, it may send channel state feedback information to the network device, where the channel state feedback information includes at least one of the following information: quantization information of the first superposition coefficient, first The base information corresponding to the superposition coefficient and the information indicated by the reporting method in the quantization information of the second superposition coefficient, the second superposition coefficient is the superposition coefficient indicated by the indication information, and the first superposition coefficient is the division indication in at least one superposition coefficient of the first terminal device A superposition coefficient other than the superposition coefficient indicated by the information.
  • the network device receives the channel state feedback information.
  • the network device may determine that the base information used by the first terminal device is the same as at least one of the base information used by the second terminal device.
  • the network device may use the uplink channel characteristics of the first terminal device and the second terminal device to learn that at least one of the same base information exists in the base information used by the two terminal devices.
  • the network device may also determine, based on the channel measurement results historically reported by the first terminal device and the channel measurement results historically reported by the second terminal device, at least one of the base information used by the first terminal device and the base information used by the second terminal device.
  • a base information is the same.
  • the network device may instruct the terminal devices with channel similarity to report some bits in the quantization information of the superposition coefficients, compared to all the bits in the quantization information of the superposition coefficients reported. bit, the repeated reporting of the same information can be reduced, thereby reducing the CSI feedback overhead.
  • FIG. 10 another channel feedback method is provided in this embodiment of the application.
  • This method can be applied to the communication system shown in FIG. 1 .
  • the first terminal device and the second terminal The angles on both sides of the device are described, and it should be understood that this does not constitute a limitation to the present application, and the present application has improvements on either side of the first terminal device and the second terminal device.
  • the method can be applied to the first terminal device and the second terminal device, or can also be applied to chips or chipsets/chip systems of the first terminal device and the second terminal device.
  • the channel feedback method may specifically include:
  • the second terminal device sends second channel state information to the first terminal device, where the second channel state information includes at least one superposition coefficient of the second terminal device.
  • the first terminal device receives the second channel state information.
  • any superposition coefficient in the second channel state information is used to represent the channel state of the second terminal device together with the corresponding base information.
  • the second channel state information may include all or part of the superposition coefficients of the second terminal device, which is not specifically limited here.
  • the second channel state information includes part of the superposition coefficient of the second terminal device
  • another part of the superposition coefficient of the second terminal device may be reported by the second terminal device itself, for example, the second terminal device reports the other part of the superposition coefficient to the network device.
  • the second terminal device reports the other part of the superposition coefficient to the network device.
  • the second channel state information may further include base information respectively corresponding to at least one superposition coefficient of the second terminal device.
  • the first terminal device performs channel state feedback to the network device based on the second channel state information and the first channel state information, where the first channel state information includes at least one superposition coefficient of the first terminal device.
  • Any superposition coefficient in the first channel state information is used to jointly characterize and determine the channel state of the first terminal device together with the corresponding base information.
  • the first channel state information may further include base information respectively corresponding to at least one superposition coefficient of the first terminal device.
  • UE1 and UE2 In a massive user scenario, there are often users with high channel correlation, for example, UE1 and UE2 in FIG. 7 .
  • the channel correlation between UE1 and UE2 is relatively high.
  • the eigenvectors (V1, V2) corresponding to the channels of these two UEs correspond to the same base information (such as angle-delay information).
  • UE1 and UE2 correspond to the same
  • the base information e 1 and e 2 of UE1 is based on the superposition coefficients ⁇ 1 and ⁇ 2 of e 1 and e 2 , which is similar to the superposition coefficients ⁇ 1 and ⁇ 2 of UE2 based on e 1 and e 2 , that is, ⁇ 1 and ⁇ 1
  • ⁇ 2 is similar to ⁇ 2 , as shown in Figure 8. At least one bit in the quantization information of two similar superposition coefficients has the same value.
  • the bits with the same value in the quantization information of the superposition coefficients corresponding to the same base information are called common bits, and the bits with different values in the quantization information of the superposition coefficients corresponding to the same base information are called as the common bits. special bits.
  • the quantization information may include at least one item of the following information: at least one bit for indicating phase and at least one bit for indicating amplitude.
  • the first terminal device when the first terminal device performs channel state feedback to the network device based on the second channel state information and the first channel state information, the first terminal device may report the channel state information of the first terminal device and the second terminal device.
  • the first terminal device may send to the network device all bits of the quantization information of the superposition coefficient included in the first channel state information, all bits of the quantization information of the first superposition coefficient in the second channel state information, and Part of the bits in the quantization information of the second superposition coefficient in the second channel state information.
  • the first superposition coefficient is a superposition coefficient in the second channel state information that is different from the base information used by the first terminal device, that is, the base corresponding to the first superposition coefficient and any superposition coefficient in the first channel state information. Information is not the same.
  • the second superposition coefficient may be the superposition coefficient in the second channel state information that uses the same base information as the first terminal device, that is, the second superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the first channel state information.
  • the part of bits may be special bits in the quantization information of the second superposition coefficient, that is, the bits in the quantization information of the second superposition coefficient have different values than the quantization information of the superposition coefficient in the first channel state information.
  • the coefficients correspond to the same base information as the superposition coefficients compared in the first channel state information.
  • the first terminal device has 4 superposition coefficients, which are respectively superposition coefficients 1 to 4
  • the second channel state information includes 3 superposition coefficients of the second terminal device, which are respectively superposition coefficients 5 to 7, wherein , wherein the base information corresponding to the superposition coefficients 1, 2, and 4 is different from the base information corresponding to the superposition coefficients 5 to 6, the base information corresponding to the superposition coefficient 7 is the same as the base information corresponding to the superposition coefficient 3, and the base information corresponding to the superposition coefficient 7 is the same.
  • the first 3 bits in the quantization information from high order to low order are the same as the first 3 bits in the quantization information of superposition coefficient 3 from high order to low order, and the lowest bit in the quantization information of superposition coefficient 7 is the same as the quantization information of superposition coefficient 3 If the least significant bits are different, the first terminal device may report to the network device all the bits of the quantization information of the superposition coefficients 1 to 4, all the bits of the quantization information of the superposition coefficients 5 to 6, and the lowest bit of the quantization information of the superposition coefficient 7. .
  • the first terminal device may also report the base information corresponding to the superposition coefficient included in the first channel state information and the base information corresponding to the first superposition coefficient to the network device. Taking the above example as an example, the first terminal device may also send the base information corresponding to the superposition coefficients 1 to 4 and the base information corresponding to the superposition coefficients 5 to 6 to the network device.
  • the first terminal device may also send to the network device all bits of the quantization information of the superposition coefficient included in the second channel state information, and all the quantization information of the third superposition coefficient in the first channel state information bits and some bits in the quantization information of the fourth superposition coefficient in the first channel state information.
  • the third superposition coefficient may be a superposition coefficient in the first channel state information that is different from the base information used by the second terminal device, that is, the third superposition coefficient corresponds to any superposition coefficient in the second channel state information.
  • the base information is not the same.
  • the fourth superposition coefficient may be the superposition coefficient in the first channel state information that uses the same base information as the second terminal device, that is, the fourth superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the second channel state information.
  • bits may be special bits in the quantization information of the fourth superposition coefficient, that is, the bits in the quantization information of the fourth superposition coefficient that have different values than the quantization information of the superposition coefficient in the second channel state information, the fourth superposition coefficient.
  • the superposition coefficient compared with the second channel state information corresponds to the same base information.
  • the first terminal device has 4 superposition coefficients, which are respectively superposition coefficients 1 to 4
  • the second channel state information includes 3 superposition coefficients of the second terminal device, which are respectively superposition coefficients 5 to 7, wherein , the base information corresponding to the superposition coefficients 1, 2 and 4 is different from the base information corresponding to the superposition coefficients 5 to 6, the base information corresponding to the superposition coefficient 7 is the same as the base information corresponding to the superposition coefficient 3, and the quantization information of the superposition coefficient 7
  • the first 3 bits sorted from high order to low order are the same as the first 3 bits in the quantization information of superposition coefficient 3 from high order to low order.
  • the lowest bit in the quantization information of superposition coefficient 7 is the lowest in the quantization information of superposition coefficient 3. If the bits are different, the first terminal device may report to the network device all the bits of the quantization information of the superposition coefficients 5 to 7, all the bits of the quantization information of the superposition coefficients 1, 2, and 4, and the least significant bit of the quantization information of the superposition coefficient 3. .
  • the first terminal device may also report the base information corresponding to the superposition coefficient included in the second channel state information and the base information corresponding to the third superposition coefficient to the network device.
  • the first terminal device may also send the base information corresponding to the superposition coefficients 5 to 7, the base information corresponding to the superposition coefficient 1, the base information corresponding to the superposition coefficient 2, and the base information corresponding to the superposition coefficient 4 to the network device.
  • the first terminal device may report the channel state information of the two terminal devices, and when reporting, the superposition coefficients with channel similarity may be reported. Only some bits are reported, so that the CSI feedback overhead can be reduced.
  • the first terminal device when the first terminal device performs channel state feedback to the network device based on the second channel state information and the first channel state information, the first terminal device may report the channel state information of the first terminal device, and send the channel state information to the second terminal device.
  • the third information is used to indicate the information reported by the second terminal device to the network device.
  • the second terminal device sends feedback information to the network device based on the third information.
  • the first terminal device may send all bits of the quantization information of the superposition coefficients included in the first channel state information to the network device, and send the first information (that is, the third information includes the first information (that is, the third information includes the first information) to the second terminal device. information), the first information is used to indicate some bits in the quantization information of the second superposition coefficient included in the second channel state information.
  • the second terminal device reports part of the bits in the quantization information of the second superposition coefficient to the network device (that is, the feedback information includes part of the bits in the quantization information of the second superposition coefficient included in the second channel state information) .
  • the first information may be the second superposition coefficient itself, or may be an identifier (eg, an index) of the second superposition coefficient, or the like.
  • the second superposition coefficient may be the superposition coefficient in the second channel state information that uses the same base information as the first terminal device, that is, the second superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the first channel state information.
  • the part of bits may be special bits in the quantization information of the second superposition coefficient, that is, the bits in the quantization information of the second superposition coefficient have different values than the quantization information of the superposition coefficient in the first channel state information.
  • the coefficients correspond to the same base information as the superposition coefficients compared in the first channel state information.
  • the first terminal device may also send second information (that is, the third information may further include second information) to the second terminal device, where the second information is used to indicate the first superposition coefficient included in the second channel state information.
  • the second terminal device reports all bits of the quantization information of the first superposition coefficient to the network device (that is, the feedback information may also include all bits of the quantization information of the first superposition coefficient included in the second channel state information).
  • the second information may be the first superposition coefficient itself, or may be an identifier (eg, an index) of the first superposition coefficient, or the like.
  • the first superposition coefficient may be a superposition coefficient in the second channel state information that is different from the base information used by the first terminal device, that is, the first superposition coefficient corresponds to any superposition coefficient in the first channel state information.
  • the base information is not the same.
  • the first terminal device has 4 superposition coefficients, which are respectively superposition coefficients 1 to 4
  • the second channel state information includes 3 superposition coefficients of the second terminal device, which are respectively superposition coefficients 5 to 7, wherein , wherein the base information corresponding to the superposition coefficients 1, 2, and 4 is different from the base information corresponding to the superposition coefficients 5 to 6, the base information corresponding to the superposition coefficient 7 is the same as the base information corresponding to the superposition coefficient 3, and the base information corresponding to the superposition coefficient 7 is the same.
  • the first 3 bits in the quantization information from high order to low order are the same as the first 3 bits in the quantization information of superposition coefficient 3 from high order to low order, and the lowest bit in the quantization information of superposition coefficient 7 is the same as the quantization information of superposition coefficient 3 The least significant bits are different.
  • the first terminal device may report all bits of the quantization information of the superposition coefficients 1 to 4 to the network device, and send the first information and the second information to the second terminal device, where the first information indicates the lowest value among the quantization information of the superposition coefficient 7. Bit by bit, the second information indicates superposition coefficients 5 and 6. After receiving the first information and the second information, the second terminal device may report the least significant bit in the quantization information of the superposition coefficient 7 and all the bits of the quantization information of the superposition coefficients 5 and 6 to the network device.
  • the first terminal device may also report the base information corresponding to the superposition coefficient included in the first channel state information to the network device.
  • the second terminal device may also report the base information corresponding to the first superposition coefficient to the network device.
  • the first terminal device may also send the base information corresponding to the superposition coefficients 1 to 4 to the network device, and the second terminal device may also send the base information corresponding to the superposition coefficients 5 and 6 to the network device.
  • the first terminal device can report the channel state information of its own terminal device, and instruct the second terminal device to report the channel state information for the channel similar to the first terminal device. Only part of the bits are reported for the unique superposition coefficients, so that the CSI feedback overhead can be reduced.
  • the first terminal device may send to the network device all bits of the quantization information of the superposition coefficients included in the first channel state information, and all bits of the quantization information of the second superposition coefficients included in the second channel state information part of the bits.
  • the second superposition coefficient may be the superposition coefficient in the second channel state information that uses the same base information as the first terminal device, that is, the second superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the first channel state information.
  • the part of bits may be special bits in the quantization information of the second superposition coefficient, that is, the bits in the quantization information of the second superposition coefficient have different values than the quantization information of the superposition coefficient in the first channel state information.
  • the coefficients correspond to the same base information as the superposition coefficients compared in the first channel state information.
  • the first terminal device may also send second information (that is, the third information may further include second information) to the second terminal device, where the second information is used to indicate the first superposition coefficient included in the second channel state information.
  • the second terminal device reports all bits of the quantization information of the first superposition coefficient to the network device (that is, the feedback information may also include all bits of the quantization information of the first superposition coefficient included in the second channel state information).
  • the second information may be the first superposition coefficient itself, or may be an identifier (eg, an index) of the first superposition coefficient, or the like.
  • the first superposition coefficient may be a superposition coefficient in the second channel state information that is different from the base information used by the first terminal device, that is, the first superposition coefficient corresponds to any superposition coefficient in the first channel state information.
  • the base information is not the same.
  • the first terminal device has 4 superposition coefficients, which are respectively superposition coefficients 1 to 4
  • the second channel state information includes 3 superposition coefficients of the second terminal device, which are respectively superposition coefficients 5 to 7, wherein , wherein the base information corresponding to the superposition coefficients 1, 2, and 4 is different from the base information corresponding to the superposition coefficients 5 to 6, the base information corresponding to the superposition coefficient 7 is the same as the base information corresponding to the superposition coefficient 3, and the base information corresponding to the superposition coefficient 7 is the same.
  • the first 3 bits in the quantization information from high order to low order are the same as the first 3 bits in the quantization information of superposition coefficient 3 from high order to low order, and the lowest bit in the quantization information of superposition coefficient 7 is the same as the quantization information of superposition coefficient 3 The least significant bits are different.
  • the first terminal device may report all bits of the quantization information of the superposition coefficients 1 to 4 and the least significant bit of the quantization information of the superposition coefficient 7 to the network device, and send second information to the second terminal device, where the second information indicates the superposition Factors 5 and 6. After receiving the second information, the second terminal device may report all bits of the quantization information of the superposition coefficients 5 and 6 to the network device.
  • the first terminal device may also report the base information corresponding to the superposition coefficient included in the first channel state information to the network device.
  • the second terminal device may also report the base information corresponding to the first superposition coefficient to the network device.
  • the first terminal device may also send the base information corresponding to the superposition coefficients 1 to 4 to the network device, and the second terminal device may also send the base information corresponding to the superposition coefficients 5 and 6 to the network device.
  • the first terminal device can report all bits of the quantization information of the superposition coefficient of the first terminal device and the channel state in the second terminal device.
  • the special bits of the superposition coefficients of similarity can reduce the CSI feedback overhead.
  • the first terminal device when it performs channel state feedback to the network device based on the second channel state information and the first channel state information, it may report all bits of the quantization information of the third superposition coefficient in the first channel state information and Part of the bits in the quantization information of the fourth superposition coefficient in the first channel state information.
  • the second terminal device may report all bits of the quantization information of the superposition coefficient in the second channel state information to the network device.
  • the third superposition coefficient may be a superposition coefficient in the first channel state information that is different from the base information used by the second terminal device, that is, the third superposition coefficient corresponds to any superposition coefficient in the second channel state information.
  • the base information is not the same.
  • the fourth superposition coefficient may be the superposition coefficient in the first channel state information that uses the same base information as the second terminal device, that is, the fourth superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the second channel state information.
  • bits may be special bits in the quantization information of the fourth superposition coefficient, that is, the bits in the quantization information of the fourth superposition coefficient that have different values than the quantization information of the superposition coefficient in the second channel state information, the fourth superposition coefficient.
  • the superposition coefficient compared with the second channel state information corresponds to the same base information.
  • the first terminal device has 4 superposition coefficients, which are respectively superposition coefficients 1 to 4
  • the second channel state information includes 3 superposition coefficients of the second terminal device, which are respectively superposition coefficients 5 to 7, wherein , wherein the base information corresponding to the superposition coefficients 1, 2, and 4 is different from the base information corresponding to the superposition coefficients 5 to 6, the base information corresponding to the superposition coefficient 7 is the same as the base information corresponding to the superposition coefficient 3, and the base information corresponding to the superposition coefficient 7 is the same.
  • the first 3 bits in the quantization information from high order to low order are the same as the first 3 bits in the quantization information of superposition coefficient 3 from high order to low order, and the lowest bit in the quantization information of superposition coefficient 7 is the same as the quantization information of superposition coefficient 3 The least significant bits are different.
  • the first terminal device may report all bits of the quantization information of the superposition coefficients 1, 2, and 4, and the least significant bit of the quantization information of the superposition coefficient 3 to the network device.
  • the second terminal device may report all bits of the quantization information of the superposition coefficients 5-7 to the network device.
  • the first terminal device may also report the base information corresponding to the third superposition coefficient to the network device.
  • the second terminal device may also report the base information corresponding to the superposition coefficient in the second channel state information to the network device.
  • the first terminal device can also send the base information corresponding to the superposition coefficient 1, the base information corresponding to the superposition coefficient 2, and the base information corresponding to the superposition coefficient 4 to the network device, and the second terminal device can also send to the network device.
  • the first terminal device after the second terminal device sends the second channel state information to the first terminal device, the first terminal device only reports some bits for superposition coefficients with channel similarity when reporting, thereby reducing CSI feedback overhead.
  • the first terminal device may determine the first superposition coefficient, the second superposition coefficient, the third superposition coefficient, and the fourth superposition coefficient in any of the following two ways:
  • the second channel state information sent by the second terminal device to the first terminal device includes the at least one superposition coefficient corresponding to the base information respectively, and the first terminal device is based on the base information included in the second channel state information and each superposition of its own.
  • the base information corresponding to the coefficients determines the first superposition coefficient, the second superposition coefficient, the third superposition coefficient, and the fourth superposition coefficient.
  • Method 2 The network device determines the first superposition coefficient, the second superposition coefficient, the third superposition coefficient, and the fourth superposition coefficient, and instructs the first terminal device which coefficients are the first superposition coefficient, which coefficients are the second superposition coefficient, and which coefficients are the third superposition coefficients, and which coefficients are the fourth superposition coefficients.
  • the network device may determine the first superposition coefficient, the second superposition coefficient, the third superposition coefficient, and the fourth superposition coefficient by using the uplink channel characteristics of the first terminal device and the second terminal device.
  • the network device may also determine the first superposition coefficient, the second superposition coefficient, the third superposition coefficient, and the fourth superposition coefficient based on the channel measurement results historically reported by the first terminal device and the channel measurement results historically reported by the second terminal device.
  • the terminal device may instruct a terminal device with channel similarity to report some bits in the quantization information of the superposition coefficient, compared to all the bits in the quantization information of the superposition coefficient reported. bit, the repeated reporting of the same information can be reduced, thereby reducing the CSI feedback overhead.
  • FIG. 11 another channel feedback method is provided in this embodiment of the present application.
  • This method can be applied to the communication system shown in FIG. 1 .
  • the first terminal device and the second terminal The angles on both sides of the device are described, and it should be understood that this does not constitute a limitation to the present application, and the present application has improvements on either side of the first terminal device and the second terminal device.
  • the method can be applied to the first terminal device and the second terminal device, or can also be applied to chips or chipsets/chip systems of the first terminal device and the second terminal device.
  • the channel measurement method may specifically include:
  • step S1101 For details of step S1101, reference may be made to step S1001, which will not be repeated here.
  • the first terminal device sends first channel state information and first information to the second terminal device, where the first information is used to indicate some bits in the quantization information of the second superposition coefficient included in the second channel state information.
  • the first channel state information includes at least one superposition coefficient of the first terminal device, and any superposition coefficient in the first channel state information is used to jointly represent and determine the channel state of the first terminal device with the corresponding base information.
  • the second superposition coefficient may be the superposition coefficient in the second channel state information that uses the same base information as the first terminal device, that is, the second superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the first channel state information.
  • the part of bits may be special bits in the quantization information of the second superposition coefficient, that is, the bits in the quantization information of the second superposition coefficient have different values than the quantization information of the superposition coefficient in the first channel state information.
  • the coefficients correspond to the same base information as the superposition coefficients compared in the first channel state information.
  • the first information may be the second superposition coefficient itself, or may be an identifier (eg, an index) of the second superposition coefficient, or the like.
  • the second terminal device reports the first channel state information and some bits in the quantization information of the second superposition coefficient to the network device.
  • the first channel state information may further include base information respectively corresponding to at least one superposition coefficient of the first terminal device. That is to say, the second terminal device may also report the base information included in the first channel state information to the network device.
  • the first terminal device may also send second information to the second terminal device, where the second information is used to indicate the first superposition coefficient included in the second channel state information.
  • the second terminal device may also report the base information of the first superposition coefficient to the network device.
  • the first superposition coefficient is a superposition coefficient in the second channel state information that is different from the base information used by the first terminal device, that is, the base corresponding to the first superposition coefficient and any superposition coefficient in the first channel state information. Information is not the same.
  • the quantization information of the superposition coefficient of the first terminal device may include at least one item of the following information: at least one bit for indicating the phase, and at least one bit for indicating the amplitude.
  • the quantization information of the superposition coefficient of the second terminal device may include at least one item of the following information: at least one bit for indicating the phase, and at least one bit for indicating the amplitude.
  • the second information may be the first superposition coefficient itself, or may be an identifier (eg, an index) of the first superposition coefficient, or the like.
  • the first terminal device has 4 superposition coefficients, which are respectively superposition coefficients 1 to 4
  • the second channel state information includes 3 superposition coefficients of the second terminal device, which are respectively superposition coefficients 5 to 7, wherein , wherein the base information corresponding to the superposition coefficients 1, 2, and 4 is different from the base information corresponding to the superposition coefficients 5 to 6, the base information corresponding to the superposition coefficient 7 is the same as the base information corresponding to the superposition coefficient 3, and the base information corresponding to the superposition coefficient 7 is the same.
  • the first 3 bits in the quantization information from high order to low order are the same as the first 3 bits in the quantization information of superposition coefficient 3 from high order to low order, and the lowest bit in the quantization information of superposition coefficient 7 is the same as the quantization information of superposition coefficient 3 The least significant bits are different.
  • the first terminal device may send superposition coefficients 1 to 4 and first information to the second terminal device, where the first information indicates the least significant bit of the quantization information of the superposition coefficient 7, and the second terminal device may report the superposition coefficients 1 to 1 to the network device. 4 all bits of the quantization information and the least significant bits of the quantization information of the superposition coefficient 7.
  • the first terminal device may also send second information to the second terminal device, where the second information is used to indicate the superposition coefficients 5 to 6, and the second terminal device may also report the quantization information of the superposition coefficients 5 to 6 to the network device. all bits of .
  • the first terminal device may also send the base information corresponding to the superposition coefficients 1 to 4 to the second terminal device
  • the second terminal device may also send the base information corresponding to the superposition coefficients 1 to 4 and the superposition coefficients 5 to 5 to the network device. 6 Corresponding base information.
  • the first terminal device determines the first superposition coefficient, the second superposition coefficient, the third superposition coefficient, and the fourth superposition coefficient, for details, please refer to the method shown in FIG. 10 for the first terminal device to determine the first superposition coefficient and the second superposition coefficient , the third superposition coefficient, and the related description of the fourth superposition coefficient, which will not be repeated here.
  • the terminal device may instruct a terminal device with channel similarity to report some bits in the quantization information of the superposition coefficient, compared to all the bits in the quantization information of the superposition coefficient reported. bit, the repeated reporting of the same information can be reduced, thereby reducing the CSI feedback overhead.
  • FIG. 12 another channel feedback method is provided in this embodiment of the present application.
  • This method can be applied to the communication system shown in FIG. 1 .
  • the method can be applied to terminal equipment and network equipment, or can also be applied to chips or chipsets/chip systems of terminal equipment and network equipment.
  • the channel measurement method may specifically include:
  • step S1201 For details of step S1201, reference may be made to step S1001, which will not be repeated here.
  • the first terminal device sends fourth information and fifth information to the second terminal device, where the fourth information is used to indicate some bits in the quantization information of the fourth superposition coefficient of the first terminal device, and the fifth information is used to indicate the first A third superposition coefficient of a terminal device.
  • the third information may be the fourth superposition coefficient itself, or may be an identifier (eg, an index) of the fourth superposition coefficient, or the like.
  • the fifth information may be the third superposition coefficient itself, or may be an identifier (eg, an index) of the third superposition coefficient, or the like.
  • the third superposition coefficient may be a superposition coefficient that is different from the base information used by the second terminal device among the superposition coefficients of the first terminal device, that is, the third superposition coefficient corresponds to any superposition coefficient of the second terminal device.
  • the base information is different.
  • the fourth superposition coefficient may be a superposition coefficient of the superposition coefficients of the first terminal device using the same base information as that of the second terminal device, that is, the fourth superposition coefficient is the same as the base information corresponding to at least one superposition coefficient of the second terminal device.
  • bits may be special bits in the quantization information of the fourth superposition coefficient, that is, the bits in the quantization information of the fourth superposition coefficient have different values than the quantization information of the superposition coefficient of the second terminal device, and the fourth superposition coefficient is the same as that of the second terminal device.
  • the superposition coefficients compared by the second terminal device correspond to the same base information.
  • the quantization information of the superposition coefficient of the first terminal device may include at least one item of the following information: at least one bit for indicating the phase, and at least one bit for indicating the amplitude.
  • the quantization information of the superposition coefficient of the second terminal device may include at least one item of the following information: at least one bit for indicating the phase, and at least one bit for indicating the amplitude.
  • the second terminal device reports some bits of the quantization information of the fourth superposition coefficient, all bits of the quantization information of the third superposition coefficient, and all bits of the quantization information of the superposition coefficient of the second terminal device to the network device.
  • the first terminal device may also send base information corresponding to the third superposition coefficient to the second terminal device, and the second terminal device may also report base information corresponding to the third superposition coefficient to the network device.
  • the second terminal device may also report the base information corresponding to the superposition coefficient of the second terminal device to the network device.
  • the first terminal device has 4 superposition coefficients, which are respectively superposition coefficients 1 to 4
  • the second channel state information includes 3 superposition coefficients of the second terminal device, which are respectively superposition coefficients 5 to 7, wherein , wherein the base information corresponding to the superposition coefficients 1, 2, and 4 is different from the base information corresponding to the superposition coefficients 5 to 6, the base information corresponding to the superposition coefficient 7 is the same as the base information corresponding to the superposition coefficient 3, and the base information corresponding to the superposition coefficient 7 is the same.
  • the first 3 bits in the quantization information from high order to low order are the same as the first 3 bits in the quantization information of superposition coefficient 3 from high order to low order, and the lowest bit in the quantization information of superposition coefficient 7 is the same as the quantization information of superposition coefficient 3 The least significant bits are different.
  • the first terminal device may send fourth information and fifth information to the second terminal device, where the fourth information indicates the least significant bit of the quantization information of the superposition coefficient 3, and the fifth information is used to indicate the superposition coefficients 1, 2, and 4.
  • the second terminal device may report all the bits of the quantization information of the superposition coefficients 5 to 7, the least significant bits of the quantization information of the superposition coefficient 3, all the bits of the quantization information of the superposition coefficient 1, and the quantization of the superposition coefficient 2 to the network device All bits of information, and all bits of quantized information of the superposition coefficient 4.
  • the first terminal device may also send the base information corresponding to the superposition coefficients 1, 2, and 4 to the second terminal device, and the second terminal device may also report the base information corresponding to the superposition coefficients 1, 2, and 4 to the network device. information.
  • the second terminal device may also send the base information corresponding to the superposition coefficients 5 to 7 to the network device.
  • the first terminal device determines the first superposition coefficient, the second superposition coefficient, the third superposition coefficient, and the fourth superposition coefficient, for details, please refer to the method shown in FIG. 10 for the first terminal device to determine the first superposition coefficient and the second superposition coefficient , the third superposition coefficient, and the related description of the fourth superposition coefficient, which will not be repeated here.
  • the terminal device may instruct a terminal device with channel similarity to report some bits in the quantization information of the superposition coefficient, compared to all the bits in the quantization information of the superposition coefficient reported. bit, the repeated reporting of the same information can be reduced, thereby reducing the CSI feedback overhead.
  • the embodiments of the present application provide a communication device.
  • the structure of the communication apparatus may be as shown in FIG. 13 , including a processing unit 1301 and a transceiver unit 1302 .
  • the communication apparatus may be specifically used to implement the method performed by the first terminal device in the embodiment of FIG. 6 , and the apparatus may be the first terminal device itself, or a chip or chipset in the first terminal device. / A system-on-a-chip or part of a chip used to perform the function of the associated method.
  • the transceiver unit 1302 is used to receive indication information from a third device, the indication information is used to indicate a reporting method, and the reporting method is to report according to at least one of the following information: the quantization information of the superposition coefficient of the communication device needs to be reported The number of bits that need to be reported in the quantization information of the superposition coefficient of the communication device, wherein the superposition coefficient of the communication device is used to represent the channel state of the communication device together with the corresponding base information; the processing unit 1301 is used for The channel state feedback is performed to the third device based on the indication information.
  • the communication device corresponds to at least one superposition coefficient; the indication information is further used to indicate a superposition coefficient to be reported in the at least one superposition coefficient in a reporting manner.
  • the processing unit 1301 is specifically configured to: send channel state feedback information to the third device through the transceiver unit 1302, where the channel state feedback information includes at least one of the following information: quantization information of the first superposition coefficient, first superposition coefficient The corresponding base information and the information indicated by the reporting method in the quantization information of the second superposition coefficient, the second superposition coefficient is the superposition coefficient indicated by the indication information, and the first superposition coefficient is at least one superposition coefficient divided by the superposition coefficient indicated by the indication information.
  • the bits that need to be reported in the superposition coefficient of the communication device are: bits in the quantization information of the superposition coefficient of the communication device that have different values than the quantization information of the superposition coefficient of the second device, the communication device The superposition coefficient of and the superposition coefficient of the second device for comparison correspond to the same base information.
  • the quantization information of the superposition coefficient of the communication apparatus includes at least one item of the following information: at least one bit for indicating phase and at least one bit for indicating amplitude.
  • the communication apparatus may be specifically used to implement the method executed by the network device in the embodiment of FIG. Used to perform part of the function of the associated method.
  • the processing unit 1301 is used to generate indication information, and the indication information is used to indicate a reporting method, and the reporting method is to report according to at least one of the following information: bits to be reported in the quantization information of the superposition coefficient of the first device, the first The number of bits to be reported in the quantization information of the superposition coefficient of a device, wherein the superposition coefficient of the first device is used to represent the channel state of the first device together with the corresponding base information; the transceiver unit 1302 is used for sending to the first device. Instructions.
  • the first device corresponds to at least one superposition coefficient; the indication information is further used to indicate a superposition coefficient to be reported in the at least one superposition coefficient in a reporting manner.
  • the processing unit 1301 is further configured to: after sending the indication information to the first device, receive channel state feedback information from the first device, where the channel state feedback information includes at least one of the following information: The quantization information, the base information corresponding to the first superposition coefficient, and the information indicated by the reporting method in the quantization information of the second superposition coefficient, the second superposition coefficient is the superposition coefficient indicated by the indication information, and the first superposition coefficient is the division indication in at least one superposition coefficient The stacking factor indicated by the information.
  • the quantization information includes at least one item of the following information: at least one bit for indicating phase and at least one bit for indicating amplitude.
  • the processing unit 1301 is further configured to: before generating the indication information, determine that the substrate information used by the first device is the same as at least one of the substrate information used by the second device.
  • the processing unit 1301 when generating the indication information, is specifically configured to: determine at least one item of the following bit information: the quantization information of the superposition coefficient of the first device is compared with the quantization information of the superposition coefficient of the second device. Bits with different values, in the quantization information of the superposition coefficient of the first device, have the same value as the quantization information of the superposition coefficient of the second device; the indication information is generated according to the determined bit information.
  • the processing unit 1301 when determining that the base information used by the first device is the same as at least one of the base information used by the second device, is specifically configured to: based on the uplink channel characteristics of the first device and the characteristics of the second device. Uplink channel characteristics, determine that the base information used by the first device is the same as at least one base information in the base information used by the second device;
  • the processing unit 1301 when it is determined that the base information used by the first device is the same as at least one of the base information used by the second device, is specifically configured to: based on the channel measurement results historically reported by the first device and the second base information. According to the channel measurement results reported by the device history, it is determined that the base information used by the first device is the same as at least one of the base information used by the second device.
  • the communication apparatus may be specifically used to implement the method performed by the first terminal device in the embodiment of FIG. 10 , and the apparatus may be the first terminal device itself, or may be a chip or a chipset in the first terminal device. / A system-on-a-chip or part of a chip used to perform the function of the associated method.
  • the transceiver unit 1302 is configured to receive second channel state information from the second device, where the second channel state information includes at least one superposition coefficient of the second device, wherein any superposition coefficient in the second channel state information is used for jointly characterize the channel state of the second device with the corresponding base information;
  • the processing unit 1301 is configured to perform channel state feedback to the third device based on the second channel state information and the first channel state information, where the first channel state information includes at least one superposition coefficient of the communication device, and any one of the first channel state information.
  • a superposition coefficient is used together with the corresponding base information to characterize and determine the channel state of the communication device.
  • the processing unit 1301 is specifically configured to: send all bits of the quantization information of the superposition coefficient included in the first channel state information and the quantization information of the first superposition coefficient in the second channel state information to the third device through the transceiver unit 1302 All bits of , and some bits of the quantization information of the second superposition coefficient in the second channel state information.
  • the first superposition coefficient is different from the base information corresponding to any superposition coefficient in the first channel state information; the second superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the first channel state information; is the bit of the quantization information of the second superposition coefficient that takes a different value than the quantization information of the superposition coefficient in the first channel state information, and the second superposition coefficient corresponds to the same base as the superposition coefficient compared with the superposition coefficient in the first channel state information information.
  • the processing unit 1301 is specifically configured to: send all the bits of the quantization information of the superposition coefficient included in the second channel state information and the quantization information of the third superposition coefficient in the first channel state information to the third device through the transceiver unit 1302 All bits of , and some bits of the quantization information of the fourth superposition coefficient in the first channel state information.
  • the third superposition coefficient is different from the base information corresponding to any superposition coefficient in the second channel state information; the fourth superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the second channel state information; is the bit of the quantization information of the fourth superposition coefficient that has a different value than the quantization information of the superposition coefficient in the second channel state information, and the fourth superposition coefficient and the superposition coefficient compared in the second channel state information correspond to the same base information.
  • the processing unit 1301 is specifically configured to: send all bits of the quantization information of the superposition coefficients included in the first channel state information to the third device through the transceiver unit 1302; the transceiver unit 1302 is further configured to: After the device obtains the second channel state information, the device sends the first information to the second device, where the first information is used to indicate some bits in the quantization information of the second superposition coefficient included in the second channel state information.
  • the second superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the first channel state information; some bits are the quantization of the superposition coefficient in the quantization information of the second superposition coefficient compared to the superposition coefficient in the first channel state information. For bits with different information values, the second superposition coefficient corresponds to the same base information as the superposition coefficient compared with the first channel state information.
  • the processing unit 1301 is specifically configured to: send all bits of the quantization information of the superposition coefficient included in the first channel state information and the quantization of the second superposition coefficient included in the second channel state information to the third device through the transceiver unit 1302 Part of the bits in the message.
  • the second superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the first channel state information; some bits are superposition coefficients compared in the quantization information of the second superposition coefficient compared to the first channel state information. Different bits of the quantization information of the quantization information have different values, and the second superposition coefficient corresponds to the same base information as the superposition coefficient in the first channel state information.
  • the transceiver unit 1302 is further configured to: send second information to the second device, where the second information is used to indicate the first superposition coefficient included in the second channel state information.
  • the first superposition coefficient is different from the base information corresponding to any superposition coefficient in the first channel state information.
  • the quantization information of the superposition coefficient of the first apparatus includes at least one item of the following information: at least one bit for indicating the phase, and at least one bit for indicating the amplitude.
  • the second channel state information further includes base information respectively corresponding to at least one superposition coefficient of the second device.
  • the first channel state information further includes base information respectively corresponding to at least one superposition coefficient of the communication device.
  • the communication apparatus may be specifically used to implement the method executed by the first terminal device in the embodiment of FIG. 11 , and the apparatus may be the first terminal device itself, or a chip or chipset in the first terminal device. / A system-on-a-chip or part of a chip used to perform the function of the associated method.
  • the transceiver unit 1302 is used to communicate with the second device; the processing unit 1301 is used to receive the second channel state information from the second device through the transceiver unit 1302, and the second channel state information includes at least one superposition of the second device.
  • any superposition coefficient in the second channel state information is used to represent the channel state of the second device together with the corresponding base information; and, the first channel state information and the first channel state information and the first information, the first information is used to indicate part of the bits in the quantization information of the second superposition coefficient included in the second channel state information, wherein the first channel state includes at least one superposition coefficient of the communication device, and the first channel state information includes at least one superposition coefficient of the communication device. Any superposition coefficient is used to jointly characterize and determine the channel state of the first device together with the corresponding base information.
  • the second superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the first channel state information; some bits are the quantization of the superposition coefficient in the quantization information of the second superposition coefficient compared to the superposition coefficient in the first channel state information. For bits with different information values, the second superposition coefficient corresponds to the same base information as the superposition coefficient compared with the first channel state information.
  • the processing unit 1301 is further configured to: send second information to the second device through the transceiver unit 1302, where the second information is used to indicate the first superposition coefficient included in the second channel state information.
  • the first superposition coefficient is different from the base information corresponding to any superposition coefficient in the first channel state information.
  • the quantization information of the superposition coefficient included in the second channel state information includes at least one item of the following information: at least one bit for indicating a phase, and at least one bit for indicating an amplitude.
  • the second channel state information further includes base information respectively corresponding to at least one superposition coefficient of the second device.
  • the first channel state information further includes base information respectively corresponding to at least one superposition coefficient of the communication device.
  • the communication apparatus may be specifically used to implement the method executed by the second terminal device in the embodiment of FIG. 10 or FIG. 11 , and the apparatus may be the second terminal device itself or a chip in the second terminal device. or a part of a chipset/system-on-chip or chip for performing the function of the associated method.
  • the transceiver unit 1302 is used to communicate with the first device; the processing unit 1301 is used to send second channel state information to the first device through the transceiver unit 1302, where the second channel state information includes at least one superposition coefficient of the communication device , wherein any superposition coefficient in the second channel state information is used to represent the channel state of the communication device together with the corresponding base information; further, the transceiver unit 1302 receives third information from the first device, the third information information for instructing the communication device to report to the third device; and sending feedback information to the third device through the transceiver unit 1302 according to the third information.
  • the third information includes first information, and the first information is used to indicate part of the bits in the quantization information of the second superposition coefficient included in the second channel state information; the feedback information includes the second superposition included in the second channel state information. Part of the bits in the quantization information of the coefficients.
  • the second superposition coefficient is the same as the base information corresponding to at least one superposition coefficient in the first channel state information, wherein the first channel state information includes at least one superposition coefficient of the first device, and any of the first channel state information includes at least one superposition coefficient of the first device.
  • a superposition coefficient is used to represent and determine the channel state of the first device together with the corresponding base information; some bits are bits that are different from the quantization information of the superposition coefficient in the quantization information of the second superposition coefficient compared to the quantization information of the superposition coefficient in the first channel state information,
  • the second superposition coefficient corresponds to the same base information as the superposition coefficient compared in the first channel state information.
  • the third information further includes first channel state information; and the feedback information further includes first channel state information.
  • the third information includes second information, and the second information is used to indicate the first superposition coefficient included in the second channel state information; the feedback information includes the first superposition coefficient included in the second channel state information.
  • the first superposition coefficient is different from the base information corresponding to any superposition coefficient in the first channel state information, wherein the first channel state information includes at least one superposition coefficient of the first device, and the first channel state information includes at least one superposition coefficient of the first device.
  • Any superposition coefficient of is used to jointly characterize and determine the channel state of the first device with the corresponding base information.
  • the quantization information of the superposition coefficient included in the second channel state information includes at least one item of the following information: at least one bit for indicating a phase, and at least one bit for indicating an amplitude.
  • the second channel state information further includes base information respectively corresponding to at least one superposition coefficient of the second device.
  • the first channel state information further includes basis information respectively corresponding to at least one superposition coefficient of the first device.
  • the communication apparatus may be specifically used to implement the method executed by the first terminal device in the embodiment of FIG. 12 , and the apparatus may be the first terminal device itself, or a chip or a chipset in the first terminal device. / A system-on-a-chip or part of a chip used to perform the function of the associated method.
  • the transceiver unit 1302 may be specifically configured to communicate with the second terminal device, for example, receive the second channel state information sent by the second terminal, and send fourth information and fifth information to the second terminal device.
  • the processing unit 1301 may specifically be used to control the transceiver unit 1302 to communicate with the second terminal device, and may also be used to implement other actions, such as determining the fourth information and the fifth information, etc., which will not be repeated here.
  • the communication apparatus may be specifically used to implement the method executed by the second terminal device in the embodiment of FIG. 12 , and the apparatus may be the second terminal device itself, or a chip or chipset in the second terminal device. / A system-on-a-chip or part of a chip used to perform the function of the associated method.
  • the transceiver unit 1302 may be specifically configured to communicate with the first terminal device, for example, send the second channel state information to the first terminal, receive fourth information and fifth information sent by the first terminal device, and so on.
  • the processing unit 1301 may specifically be used to control the transceiver unit 1302 to communicate with the first terminal device, and may also be used to implement other actions, such as determining the fourth information and the fifth information, etc., which will not be repeated here.
  • the division of modules in the embodiments of the present application is schematic, and is only a logical function division. In actual implementation, there may be other division methods.
  • the functional modules in the various embodiments of the present application may be integrated into one processing unit. In the device, it can also exist physically alone, or two or more modules can be integrated into one module.
  • the above-mentioned integrated modules may be implemented in the form of hardware, or may be implemented in the form of software function modules, or a combination of hardware and software function modules. It can be understood that, for the functions or implementations of each module in the embodiments of the present application, further reference may be made to the related descriptions of the method embodiments.
  • the communication device may be as shown in FIG. 14 , and the communication device may be a communication device or a chip in the communication device, where the communication device may be a device or a third device.
  • the apparatus may include a processor 1401 , a communication interface 1402 , and a memory 1403 .
  • the processing unit 1301 may be the processor 1401 .
  • the transceiver unit 1302 may be the communication interface 1402 .
  • the processor 1401 may be a central processing unit (central processing unit, CPU), or a digital processing unit, or a processing circuit or a logic circuit, or the like.
  • the communication interface 1402 may be a transceiver, an interface circuit such as a transceiver circuit, etc., a transceiver chip, or an input and/or output pin or circuit on a chip or a chipset/chip system, and the like.
  • the apparatus further includes: a memory 1403 for storing programs executed by the processor 1401 .
  • the memory 1403 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), such as random access memory (random access memory) -access memory, RAM).
  • Memory 1403 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.
  • the processor 1401 is configured to execute the program code stored in the memory 1403, and is specifically configured to execute the actions of the above-mentioned processing unit 1301, which will not be described herein again.
  • the communication interface 1402 is specifically configured to perform the operations of the transceiving unit 1302 as described above, and details are not described herein again in this application.
  • the specific connection medium between the communication interface 1402 , the processor 1401 , and the memory 1403 is not limited in the embodiments of the present application.
  • the memory 1403, the processor 1401, and the communication interface 1402 are connected through a bus 1404 in FIG. 14.
  • the bus is represented by a thick line in FIG. 14, and the connection between other components is only for schematic illustration. , is not limited.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is shown in FIG. 14, but it does not mean that there is only one bus or one type of bus.
  • An embodiment of the present invention further provides a computer-readable storage medium for storing computer software instructions to be executed for executing the above-mentioned processor, which includes a program to be executed for executing the above-mentioned processor.
  • Embodiments of the present invention also provide a computer program product, including a computer program for executing the above-mentioned processor.
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application 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.) having computer-usable program code embodied therein.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

Landscapes

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

Abstract

Des modes de réalisation de la présente demande concernent un procédé et un appareil de rétroaction de canal destinés à résoudre le problème dans l'état de la technique selon lequel le surdébit de rétroaction de canal est élevé. Le procédé comprend les étapes suivantes : un premier dispositif terminal reçoit des informations d'indication d'un dispositif de réseau, puis renvoie un état de canal au dispositif réseau d'après les informations d'indication, les informations d'indication servant à indiquer de rapporter au moins l'une des informations suivantes : un bit requis devant être signalé dans les informations de quantification d'un coefficient de superposition du premier dispositif terminal, et le nombre de bits devant être signalé dans les informations de quantification du coefficient de superposition du premier dispositif terminal, le coefficient de superposition du premier dispositif terminal servant à représenter l'état de canal du premier dispositif terminal conjointement avec des informations de base correspondantes. Dans les modes de réalisation de la présente demande, le dispositif réseau peut indiquer au dispositif terminal de rapporter certains des bits dans les informations de quantification du coefficient de superposition. De plus, par rapport à la notification de tous les bits des informations de quantification du coefficient de superposition, la présente demande permet de réduire la notification répétée des mêmes informations, ce qui permet de réduire le surdébit de rétroaction d'informations d'état de canal.
PCT/CN2021/111280 2020-09-07 2021-08-06 Procédé et appareil de rétroaction de canal WO2022048400A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010930522.7 2020-09-07
CN202010930522.7A CN114157328A (zh) 2020-09-07 2020-09-07 一种信道反馈方法及装置

Publications (1)

Publication Number Publication Date
WO2022048400A1 true WO2022048400A1 (fr) 2022-03-10

Family

ID=80460884

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/111280 WO2022048400A1 (fr) 2020-09-07 2021-08-06 Procédé et appareil de rétroaction de canal

Country Status (2)

Country Link
CN (1) CN114157328A (fr)
WO (1) WO2022048400A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117998384A (zh) * 2022-10-28 2024-05-07 华为技术有限公司 通信方法与通信装置
CN117955535A (zh) * 2022-10-31 2024-04-30 华为技术有限公司 一种下行信道状态信息上报方法及装置
CN117997399A (zh) * 2022-11-04 2024-05-07 华为技术有限公司 一种信道参数上报方法及通信装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018196628A1 (fr) * 2017-04-26 2018-11-01 华为技术有限公司 Procédé et dispositif permettant d'indiquer et de déterminer un vecteur de précodage
WO2020156103A1 (fr) * 2019-01-30 2020-08-06 华为技术有限公司 Procédé et dispositif de rétroaction d'informations
CN111628844A (zh) * 2019-02-27 2020-09-04 电信科学技术研究院有限公司 一种信道状态信息反馈方法及装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018196628A1 (fr) * 2017-04-26 2018-11-01 华为技术有限公司 Procédé et dispositif permettant d'indiquer et de déterminer un vecteur de précodage
WO2020156103A1 (fr) * 2019-01-30 2020-08-06 华为技术有限公司 Procédé et dispositif de rétroaction d'informations
CN111628844A (zh) * 2019-02-27 2020-09-04 电信科学技术研究院有限公司 一种信道状态信息反馈方法及装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
OPPO: "Discussion on overhead reduction and rank extension for type II CSI feedback.", 3GPP TSG-RAN WG1 98BIS R1-1910115., 20 October 2019 (2019-10-20), XP051788922 *
VIVO.: "Further discussion on type II CSI compression and feedback for high rank extension.", 3GPP TSG RAN WG1#96BIS R1-1904095., 12 April 2019 (2019-04-12), XP051691282 *

Also Published As

Publication number Publication date
CN114157328A (zh) 2022-03-08

Similar Documents

Publication Publication Date Title
WO2021259180A1 (fr) Procédé et appareil de rapport de mesure
WO2020156103A1 (fr) Procédé et dispositif de rétroaction d'informations
WO2022048400A1 (fr) Procédé et appareil de rétroaction de canal
TWI692261B (zh) 資料傳輸方法、基地台和終端
US11424807B2 (en) Enhanced frequency compression for overhead reduction for CSI reporting and usage
CN113746573B (zh) 一种信道测量方法及装置
WO2018228120A1 (fr) Procédé et appareil de transmission d'informations de commande en liaison descendante (dci)
WO2018202154A1 (fr) Procédé d'indication de matrice de précodage de transmission et dispositif
WO2020155119A1 (fr) Procédé et appareil pour rapporter des informations d'état de canal
WO2022048593A1 (fr) Procédé et dispositif de mesure de canal
US20230239014A1 (en) Information indication method and apparatus
US11196522B2 (en) Enhanced sounding reference signal scheme
WO2021056588A1 (fr) Procédé et dispositif de précodage de configuration
CN112312464A (zh) 上报信道状态信息的方法和通信装置
WO2024027394A1 (fr) Procédé et appareil de communication
US10469135B2 (en) Transmission control methods and transmission control apparatus
JP2023514580A (ja) チャネル状態情報フィードバック方法及び通信装置
CN116368744B (zh) 一种信息指示方法及装置
WO2018035866A1 (fr) Procédé et appareil d'envoi de données
WO2024032241A1 (fr) Procédé de rapport de composante de domaine fréquentiel, et appareil
WO2023125125A1 (fr) Procédé de communication et appareil de communication
WO2024093686A1 (fr) Procédé de rapport d'informations d'état de canal de liaison descendante et appareil
WO2023160692A1 (fr) Procédé de communication et appareil de communication
WO2022253169A1 (fr) Procédé de traitement de communication et appareil de traitement de communication
WO2023213239A1 (fr) Procédé de configuration de signal de référence, procédé de rapport d'informations d'état et dispositif associé

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: 21863467

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21863467

Country of ref document: EP

Kind code of ref document: A1