WO2023082154A1 - Procédé et appareil pour mettre à jour une solution de rétroaction csi, dispositif et support de stockage - Google Patents

Procédé et appareil pour mettre à jour une solution de rétroaction csi, dispositif et support de stockage Download PDF

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Publication number
WO2023082154A1
WO2023082154A1 PCT/CN2021/130159 CN2021130159W WO2023082154A1 WO 2023082154 A1 WO2023082154 A1 WO 2023082154A1 CN 2021130159 W CN2021130159 W CN 2021130159W WO 2023082154 A1 WO2023082154 A1 WO 2023082154A1
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Prior art keywords
csi
csi feedback
feedback scheme
access network
terminal device
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PCT/CN2021/130159
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English (en)
Chinese (zh)
Inventor
田文强
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Oppo广东移动通信有限公司
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Priority to CN202180100227.1A priority Critical patent/CN117616714A/zh
Priority to PCT/CN2021/130159 priority patent/WO2023082154A1/fr
Publication of WO2023082154A1 publication Critical patent/WO2023082154A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—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
    • H04B7/0417—Feedback systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the present application relates to the field of communication technology, and in particular to an updating method, device, equipment and storage medium of a CSI (Chanel State Information, Channel State Information) feedback scheme.
  • CSI Channel State Information, Channel State Information
  • the access network device can know the channel quality of the terminal device side through the CSI feedback.
  • the access network device obtains the information related to the channel quality through the CSI feedback process, and configures the data transmission scheme according to the information related to the channel quality.
  • Embodiments of the present application provide a method, device, device, and storage medium for updating a CSI feedback scheme. Described technical scheme is as follows:
  • a method for updating a CSI feedback scheme is provided, the method is performed by a terminal device, and the method includes:
  • the first reference signal is a reference signal for updating a CSI feedback scheme
  • a data set required for updating the CSI feedback solution is determined.
  • a method for updating a CSI feedback scheme is provided, the method is performed by an access network device, and the method includes:
  • the first reference signal is a reference signal for updating a CSI feedback scheme
  • the first reference signal is used to determine a data set required for updating the CSI feedback scheme
  • a device for updating a CSI feedback scheme comprising:
  • a first receiving module configured to receive a first reference signal from an access network device, where the first reference signal is a reference signal for updating a CSI feedback scheme
  • a data construction module configured to determine a data set required for updating the CSI feedback scheme according to the first reference signal.
  • a device for updating a CSI feedback scheme comprising:
  • the first sending module is configured to send a first reference signal to the terminal device, where the first reference signal is a reference signal used for updating the CSI feedback scheme, and the first reference signal is used to determine what is required for updating the CSI feedback scheme data set.
  • a terminal device includes a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program to implement the above CSI feedback solution update method.
  • an access network device includes a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program to implement An update method for the above CSI feedback scheme.
  • a computer-readable storage medium is provided, and a computer program is stored in the storage medium, and the computer program is used to be executed by a processor, so as to implement the above-mentioned method for updating the CSI feedback scheme.
  • a chip is provided, the chip includes a programmable logic circuit and/or program instructions, and when the chip is running, it is used to implement the update method of the above CSI feedback solution.
  • a computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and a processor reads from the The computer-readable storage medium reads and executes the computer instructions, so as to realize the updating method of the above-mentioned CSI feedback solution.
  • the access network device sends the first reference signal for updating the CSI feedback model to the terminal device, so that during the communication between the terminal device and the access network device, the Updates to the CSI Feedback Scheme. It avoids that the CSI feedback model cannot adapt to changes in the communication scene, resulting in poor CSI feedback effects, which will affect the data transmission scheme generated by the access network device, and cause the quality of data transmission between the terminal device and the access network device to deteriorate.
  • the terminal device or the access network device can update the CSI feedback scheme through the first reference signal, which helps to keep the CSI feedback scheme in a flexible and changeable communication scenario and maintain a good CSI feedback effect. Therefore, relevant information fed back by the access network device through the CSI can be configured to generate a transmission scheme suitable for the current communication scenario, which helps to improve the communication quality between the terminal device and the access network device.
  • FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the present application.
  • FIG. 2 exemplarily shows a schematic diagram of a process in which a terminal device and an access network device perform CSI feedback
  • FIG. 3 exemplarily shows a schematic diagram of a feedback process of a neural network-based CSI feedback scheme
  • FIG. 4 is a flowchart of a method for updating a feedback scheme provided by an embodiment of the present application
  • FIG. 5 is a flowchart of a method for updating a CSI feedback scheme provided by an embodiment of the present application
  • FIG. 6 is a schematic diagram of a process in which a terminal device triggers an update of a CSI feedback scheme provided by an embodiment of the present application
  • Fig. 7 exemplarily shows a schematic diagram of a representation form of the first information
  • Fig. 8 exemplarily shows a schematic diagram of another representation form of the first information
  • FIG. 9 is a schematic diagram of a process in which an access network device triggers an update of a CSI feedback scheme provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a process in which a terminal device sends a first reference CSI to an access network device according to an embodiment of the present application
  • FIG. 11 is a schematic diagram of a process in which a terminal device updates a CSI feedback scheme provided by an embodiment of the present application
  • FIG. 12 is a schematic diagram of a process in which a terminal device updates a CSI feedback scheme provided by another embodiment of the present application.
  • FIG. 13 is a schematic diagram of a process in which a terminal device stops updating a CSI feedback scheme provided by an embodiment of the present application
  • FIG. 14 is a schematic diagram of a process in which a terminal device stops updating a CSI feedback scheme provided by another embodiment of the present application.
  • Fig. 15 exemplarily shows a schematic diagram of an expression form of the third information
  • Fig. 16 exemplarily shows a schematic diagram of another representation form of the third information
  • FIG. 17 is a schematic diagram of a process in which a terminal device sends an updated CSI feedback scheme to an access network device according to an embodiment of the present application;
  • FIG. 18 is a block diagram of an updating device for a CSI feedback scheme provided by an embodiment of the present application.
  • FIG. 19 is a block diagram of an updating device for a CSI feedback scheme provided by another embodiment of the present application.
  • FIG. 20 is a structural block diagram of a terminal device provided by an embodiment of the present application.
  • Fig. 21 is a structural block diagram of an access network device provided by an embodiment of the present application.
  • the network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the evolution of the technology and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.
  • the technical solution of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.
  • GSM Global System of Mobile
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V Vehicle to Vehicle
  • V2X Vehicle to everything
  • the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, may also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and may also be applied to an independent (Standalone, SA) network deployment scenario.
  • Carrier Aggregation, CA Carrier Aggregation
  • DC Dual Connectivity
  • SA independent network deployment scenario
  • the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to a licensed spectrum, wherein the licensed spectrum can also be Considered as unshared spectrum.
  • Non-Terrestrial Networks NTN
  • TN terrestrial communication network
  • FIG. 1 shows a schematic diagram of a network architecture 100 provided by an embodiment of the present application.
  • the network architecture 100 may include: a terminal device 10 and an access network device 20 .
  • the terminal device 10 may refer to a UE (User Equipment, user equipment), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent, or a user device.
  • UE User Equipment
  • an access terminal a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent, or a user device.
  • the terminal device 10 can also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol, session initiation protocol) phone, a WLL (Wireless Local Loop, wireless local loop) station, a PDA (Personal Digital Assistant, personal digital processing) , handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5GS (5th Generation System, fifth-generation mobile communication system) or future evolution of PLMN (Public Land Mobile Network, public land mobile communication network) terminal equipment, etc., this embodiment of the present application is not limited to this.
  • 5GS Fifth Generation System, fifth-generation mobile communication system
  • PLMN Public Land Mobile Network, public land mobile communication network
  • terminal devices 10 The number of terminal devices 10 is generally multiple, and one or more terminal devices 10 may be distributed in a cell managed by each access network device 20 .
  • terminal device and “UE” are usually used interchangeably, but those skilled in the art can understand their meanings.
  • the access network device 20 is a device deployed in an access network to provide a wireless communication function for the terminal device 10 .
  • the access network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, and so on.
  • the names of devices with access network device functions may be different. For example, in 5G NR systems, they are called gNodeB or gNB. With the evolution of communication technology, the name "access network equipment" may change.
  • access network devices For the convenience of description, in the embodiment of the present application, the above-mentioned devices that provide the wireless communication function for the terminal device 10 are collectively referred to as access network devices.
  • the access network device 20 may be one or more eNodeBs in EUTRAN (Evolved Universal Terrestrial Radio Access Network, Evolved Universal Terrestrial Radio Network) or EUTRAN;
  • EUTRAN Evolved Universal Terrestrial Radio Access Network
  • EUTRAN EUTRAN
  • the access network device 20 may be a RAN (Radio Access Network, radio access network) or one or more gNBs in the RAN.
  • the access network device 20 and the terminal device 10 communicate with each other through a certain air interface technology, such as a Uu interface.
  • the "5G NR system" in the embodiment of the present application may also be called a 5G system or an NR system, but those skilled in the art can understand its meaning.
  • the technical solutions described in the embodiments of this application can be applied to LTE systems, 5G NR systems, and subsequent evolution systems of 5G NR systems, and can also be applied to systems such as NB-IoT (Narrow Band Internet of Things, narrowband Internet of Things) system and other communication systems, this application is not limited to this.
  • NB-IoT Near Band Internet of Things, narrowband Internet of Things
  • the signal will be distorted and interfered by noise.
  • the signal sender and the signal receiver need to measure the distortion and noise in the channel used for data transmission.
  • the sender sends a reference signal
  • the receiver receives the reference signal propagated in the channel and compares it with the reference signal before sending. Determine information such as distortion and noise in the channel by establishing a mathematical model or other methods.
  • the receiver processes the received signal and corrects the distortion information and noise in the signal. This process is called channel measurement.
  • the CSI feedback refers to a way of channel negotiation between a terminal device and an access network device.
  • FIG. 2 shows a process in which a terminal device and an access network device perform CSI feedback.
  • the access network device sends information such as configuration information of the CSI reference signal and parameters to be fed back to the terminal device, and sends a reference signal for measuring CSI to the terminal device based on the configuration information.
  • the terminal equipment obtains the CSI by measuring the reference signal.
  • the terminal device needs to send the measured CSI to the access network device.
  • the terminal device processes the CSI.
  • the terminal device compresses the CSI by using the CSI feedback scheme to generate the compressed CSI.
  • the terminal device sends the compressed CSI to the access network device.
  • the access network device receives the compressed CSI sent by the terminal device, and restores the compressed CSI to restored CSI through some restoration methods.
  • the access network device uses the CSI feedback scheme corresponding to the terminal device side to restore the compressed CSI to obtain the restored CSI.
  • the access network device configures a transmission scheme for data transmission with the terminal device based on the restored CSI.
  • the CSI indication in the existing system may include an indication of information such as CQI (Channel Quality Indicator, channel quality indicator), PMI (Precoding matrix indicator, precoding matrix indicator), RI (Rank indicator, rank indicator).
  • CQI Channel Quality Indicator, channel quality indicator
  • PMI Precoding matrix indicator, precoding matrix indicator
  • RI Rank indicator, rank indicator
  • the access network device will configure some reference signals for CSI measurement, such as SSB (Synchronization Signa Block, synchronization signal block) or CSI-RS (Chanel State Information-Reference Signal, channel state information-reference signal).
  • the measurement of the reference signal by the terminal device refers to the measurement of the reference signal sent by the access network device by the terminal device.
  • the terminal device After the terminal device obtains the CSI in the current communication scene through CSI measurement, it processes the CSI according to the feedback parameter information to obtain feedback information, and the terminal device sends the feedback information to the access network device, so that the access network device can configure the current CSI based on the current CSI.
  • Reasonable and efficient data transmission method such as SSB (Synchronization Signa Block, synchronization signal block) or CSI-RS (Chanel State Information-Reference Signal, channel state information-reference signal).
  • a mathematical model is used between a terminal device and an access network device to perform CSI feedback.
  • Most of the basic principles of wireless communication systems are based on theoretical modeling and parameter selection of the actual communication environment. As the requirements for flexibility, adaptability, speed, and capacity of wireless communication systems are further enhanced, the gains that can be brought by this traditional wireless communication system working method based on classical model theory are gradually weakening.
  • AI Artificial Intelligence, artificial intelligence
  • an AI-based feedback scheme can be used between terminal equipment and access network equipment for CSI feedback.
  • the following takes the neural network-based feedback model as an example to introduce the AI-based feedback scheme. Please refer to FIG. 3 , which shows the feedback process of the neural network-based CSI feedback scheme.
  • a neural network-based feedback scheme includes at least an encoder and a decoder. Among them, both the encoder and the decoder are constructed based on the neural network.
  • the terminal device obtains the CSI based on measuring the time-domain channel or the frequency-domain channel, and uses an encoder to process the CSI or a feature vector obtained by extracting features from the CSI to obtain compressed CSI.
  • the terminal device sends the compressed CSI to the access network device.
  • the access network device receives the compressed CSI, and uses a corresponding decoder to process the compressed CSI to obtain the restored CSI.
  • the compressed CSI obtained by using the AI-based feedback scheme to compress the CSI is the same as the same CSI obtained through the mathematical model. Compared with the compressed CSI obtained by performing compression, it has a smaller amount of data. For example, in the case of achieving the same gain, use the mathematical model and the AI-based feedback scheme to compress the channel state information respectively.
  • the data volume of the compressed information generated by the mathematical model is 200 bits
  • the data volume of the compressed information generated by the AI-based feedback scheme is 200 bits. 20bit.
  • using an AI-based feedback scheme for CSI feedback has higher feedback accuracy and better CSI feedback under the same feedback overhead. Moreover, in the case of the same feedback accuracy, the feedback overhead generated by using the AI-based feedback scheme is smaller.
  • the feedback accuracy of the AI-based feedback scheme has a strong correlation with the usage scenario.
  • using the AI-based feedback scheme can obtain better CSI compression, feedback and restore performance.
  • AI-based CSI feedback schemes cannot autonomously adapt to changes in communication scenarios between terminal devices and access network devices.
  • an update method for the CSI feedback scheme is required have a discussion.
  • FIG. 4 shows a flowchart of a method for updating a feedback scheme provided by an embodiment of the present application.
  • the method can be applied to the network architecture shown in Figure 1, and the method can include at least one of the following steps (410-420):
  • Step 410 the first device sends a first reference signal to the second device, where the first reference signal is a reference signal for updating the feedback scheme, and the first reference signal is used to determine a data set required for updating the feedback scheme.
  • the second device receives the first reference signal from the first device.
  • the first device and the second device are two devices capable of communicating.
  • the first device may be an access network device
  • the second device may be a terminal device.
  • the first device may be a terminal device
  • the second device may be an access network device.
  • communication scenarios such as SL (Sidelink, side link)
  • the first device is a first terminal device
  • the second device is a second terminal device.
  • the specific categories of the first device and the second device are determined according to actual communication scenarios, which are not limited in this application.
  • the feedback scheme refers to a scheme for feeding back information, and the feedback scheme may be used to feed back CSI information or other information.
  • Step 420 the second device determines the data set required for updating the feedback scheme according to the first reference signal.
  • the second device measures the first reference signal, and determines a data set required for updating the feedback scheme according to the measured data.
  • the second device utilizes the first reference signal to construct a data set required for updating the feedback scheme.
  • the second device uses the measured data as a data set required for updating the feedback solution.
  • the first device and/or the second device input the data set into the feedback scheme, and process the data set through the feedback scheme to obtain the restored data set.
  • the first device and/or the second device can adjust and update the feedback scheme or part of the feedback scheme, so as to obtain an updated feedback scheme.
  • the difference between the data and the recovered data is small, that is, the feedback scheme is updated Finally, the feedback scheme has better feedback ability for the data to be fed back.
  • the first device sends the first reference signal to the second device, so that the first device or the second device can update the feedback scheme according to the data set constructed by the first reference signal.
  • updating the feedback scheme can improve the adaptability of the feedback scheme when the data to be fed back changes, and help to improve the flexibility of the feedback scheme so as to expand the application range of the feedback scheme.
  • the update method of the above feedback scheme is introduced.
  • the CSI feedback scheme triggers the update and performs
  • the update method can also be applied to the process of updating the feedback method in the above embodiment.
  • FIG. 5 shows a flowchart of a method for updating a CSI feedback scheme provided by an embodiment of the present application.
  • the method can be applied to the network architecture shown in Figure 1, and the method can include at least one of the following steps (510-520):
  • Step 510 the access network device sends a first reference signal to the terminal device, where the first reference signal is a reference signal for updating the CSI feedback scheme, and the first reference signal is used to determine the data set required for updating the CSI feedback scheme.
  • the first reference signal is a reference signal for updating the CSI feedback scheme
  • the first reference signal is used to determine the data set required for updating the CSI feedback scheme.
  • the CSI feedback scheme is a method for performing CSI feedback by the terminal device and the access network device.
  • CSI feedback schemes can include mathematical models as well as AI models.
  • the access network device can understand the channel condition based on the CSI feedback scheme, so that the channel with better channel quality is used for data transmission during the data transmission process, which helps to improve the communication quality between the terminal device and the access network device.
  • updating the CSI feedback scheme refers to a process of revising the CSI feedback scheme to improve the feedback capability of the CSI feedback scheme in the current communication scenario.
  • updating the CSI feedback scheme is performed during the process of CSI feedback performed by the terminal device and the access network device using the CSI feedback scheme.
  • the updated CSI feedback scheme can better adapt to the channel characteristics of the terminal device and the access network device.
  • the CSI feedback scheme includes a CSI feedback model, and the CSI feedback model includes an encoder and a decoder; wherein, the encoder is used to encode and compress the CSI to obtain compressed CSI; the decoder is used to perform compression on the compressed CSI. Decoding is restored, and the restored CSI is obtained.
  • the CSI feedback model is a neural network model, and the encoder and decoder are AI models constructed based on the neural network.
  • the terminal device uses an encoder to compress the received CSI or information related to the CSI to obtain the compressed CSI.
  • the terminal device sends the compressed CSI to the access network device.
  • the access network device receives the compressed CSI, restores the compressed CSI through a corresponding decoder, and obtains the restored CSI.
  • the terminal device receives the first reference signal from the access network device, where the first reference signal is a reference signal used for updating the CSI feedback scheme.
  • the first reference signal may be SSB or CSI-RS.
  • the CSI-RS is an RS for acquiring channel quality information
  • the CSI-RS resources include time domain resources, frequency domain resources and code resources required for transmitting the CSI-RS.
  • the access network device sending the first reference signal to the terminal device includes: the access network device sending the first reference signal to the terminal device according to the first configuration information; where the first configuration information is used to indicate the first A transmission parameter of a reference signal.
  • the terminal device receiving the first reference signal from the access network device includes: the terminal device receiving the first reference signal from the access network device according to the first configuration information; wherein the first configuration information is used for Indicates the transmission parameter of the first reference signal.
  • the first configuration information is configured by the access network device; or, the first configuration information is configured by the terminal device and provided to the access network device.
  • the terminal device generates first configuration information according to current communication requirements, and sends the first configuration information to the access network device.
  • the first reference signal recommended by the terminal device to the access network device is configured in the first configuration information.
  • the access network device needs to determine whether to use the first reference signal indicated in the first configuration information. Signal. If the communication environment permits, the access network device sends the first reference signal according to the first configuration information, and the terminal device receives the first reference signal sent by the access network device according to the first configuration information.
  • the terminal device configures appropriate transmission parameters of the first reference signal according to the current channel state, which helps to improve the accuracy of the terminal device receiving the first reference signal, and constructs a A more accurate data set makes the feedback effect of the updated CSI feedback scheme better.
  • the first configuration information is configured by the access network device and provided to the terminal device; or, the first configuration information is configured by the terminal device.
  • the access network device generates first configuration information, and sends the first configuration information to the terminal device.
  • the access network device can configure the first configuration information according to the current channel usage, busyness and other information, which helps to prevent the first reference signal from being occupied .
  • Step 520 the terminal device determines the data set required for updating the CSI feedback scheme according to the first reference signal.
  • the access network device sends the first reference signal to the terminal device, where the first reference signal is a reference signal for updating the CSI feedback solution.
  • the terminal device uses the first reference signal to construct a data set required for updating the CSI feedback scheme. For example, the terminal device measures the first reference signal, and uses the measured result to construct a data set required for updating the CSI feedback solution.
  • the density of the first reference signal in the time domain is greater than the density of the second reference signal in the time domain, and the second reference signal is a reference signal for supporting data transmission.
  • the first reference signal sent by the access network device is used to update the CSI feedback solution.
  • the first reference signal may be denser in the time domain than the reference signal used for data transmission.
  • the degree of density may be represented by a transmission period, a transmission frequency, or a transmission time interval.
  • the transmission period refers to the periodical transmission of a certain signal, and refers to the interval between two adjacent transmissions of the signal.
  • Transmission frequency refers to the number of times a signal is sent per unit time.
  • the transmission time interval refers to the interval between two adjacent transmissions of a certain signal. For the case of periodic transmission, the transmission time interval is consistent with the meaning expressed by the transmission cycle, but the transmission time interval can also be used for non-periodic transmission. to describe.
  • the denseness of the first reference signal in the time domain is greater than that of the second reference signal in the time domain, which means that compared with the second reference signal, the first reference signal has a shorter transmission period, a larger transmission frequency, and a longer transmission time. shorter intervals etc.
  • the time interval between the first reference signals sent by the access network device is relatively short.
  • the access network device may send a first reference signal for every symbol in a slot (time slot), or may send a first reference signal every other symbol.
  • the access network device may send the first reference signal in each slot, or may send the first reference signal in a shorter period.
  • the period for the access network to transmit the first reference signal may be 1 ms, 2 ms, 3 ms, 4 ms, 5 ms, 6 ms, 7 ms, 8 ms, 9 ms and so on.
  • the first reference signals are denser in the time domain, indicating that the access network device sends a large number of first reference signals per unit time.
  • the terminal device receives a large number of first reference signals sent by the access network device, and constructs these first reference signals into a data set for updating the CSI feedback scheme, that is, a large amount of data in the data set is used to perform the CSI feedback scheme
  • the update is beneficial to improve the accuracy of the updated CSI feedback scheme.
  • the terminal device can use these first reference signals to construct the data set in a short time, which helps to shorten the time for the terminal device to construct the data set, thereby shortening the CSI feedback scheme update duration. Completing the update of the CSI feedback scheme in a short time helps to avoid the degradation of data transmission quality caused by the poor feedback effect of the CSI feedback scheme in the current communication scenario, and helps to improve the communication between the terminal device and the access network device. Data transmission quality.
  • the access network device sends the first reference signal for updating the CSI feedback model to the terminal device, so that the terminal device and the access network device During the communication process, the CSI feedback solution can be updated. It avoids that the CSI feedback model cannot adapt to changes in communication scenarios, resulting in poor CSI feedback effects, which will affect the data transmission scheme generated by the access network device, and cause the quality of data transmission between the terminal device and the access network device to deteriorate.
  • the terminal device or the access network device updates the CSI feedback scheme through the first reference signal, which helps to keep the CSI feedback scheme in a flexible and changeable communication scenario and maintains a good CSI feedback effect. Therefore, the relevant information fed back by the access network device through the CSI can be configured to generate a transmission scheme suitable for the current communication scenario, which helps to improve the communication quality between the terminal device and the access network device.
  • the trigger update process of the CSI feedback scheme is introduced through several embodiments.
  • the trigger update process can be implemented by terminal equipment or by access network equipment.
  • the terminal device triggers an update of the CSI feedback scheme.
  • the method before the terminal device receives the first reference signal from the access network device, the method further includes: when the CSI feedback scheme satisfies the first condition, the terminal device triggers to update the CSI feedback scheme; The network access device sends first information, where the first information is used to indicate that the CSI feedback solution needs to be updated.
  • the first condition includes at least one of the following:
  • the performance of the CSI feedback scheme satisfies the first sub-condition.
  • the transmission state between the terminal device and the access network device satisfies the second subcondition.
  • the terminal device when the performance of the CSI feedback solution satisfies the first sub-condition, the terminal device triggers to update the CSI feedback solution.
  • the first sub-condition includes at least one of the following: the deviation value between the first reference CSI and the first restored CSI is greater than or equal to the first threshold; the difference between the first reference CSI and the first restored CSI The similarity of is less than or equal to the second threshold; wherein, the first restored CSI is the CSI obtained by compressing and restoring the first reference CSI through the CSI feedback scheme.
  • the first condition is stipulated in an agreement, or is configured by the access network device and provided to the terminal device, or is determined by the terminal device itself.
  • the first reference CSI is obtained by measurement by the terminal device.
  • the terminal device measures the reference signal sent by the access network device for CSI feedback.
  • the terminal device compresses and restores the first reference CSI through the CSI feedback scheme being used to obtain the first restored CSI.
  • the CSI feedback solution includes a CSI feedback model.
  • the feedback model is a neural network model
  • the feedback model includes an encoder and a decoder
  • the encoder and decoder are constructed based on a neural network. There is both an encoder and a decoder in an end device.
  • the terminal device compresses the first reference CSI through an encoder to obtain compressed CSI, wherein the compressed CSI has attribute features in the first reference CSI, and optionally, the attribute features may be channel quality features. Subsequently, the terminal device uses a decoder to decode the compressed CSI to obtain the first restored CSI.
  • the terminal device judges when to update the CSI feedback solution by measuring the deviation value between the first reference CSI and the first restored CSI.
  • the deviation value between the first reference CSI and the first restored CSI is used to represent the degree of deviation between the first reference CSI and the first restored CSI.
  • the method for the terminal device to determine the deviation value between the first reference CSI and the first restored CSI includes but is not limited to: MSE (Mean Squared Error, mean square error) correlation calculation, NMSE (Normalized Root Mean Square Error , normalized root mean square difference) and other related calculation methods.
  • the terminal device calculates the deviation value between the first reference CSI and the first restored CSI by using one of the above methods.
  • the terminal device determines to trigger an update of the CSI feedback solution. If the deviation value is less than or equal to the first threshold, the difference between the first reference CSI and the first recovered CSI obtained through the CSI feedback scheme is small, that is, the CSI feedback scheme can adapt to the current communication scenario, and the terminal device does not trigger the CSI for the time being. Updates to the Feedback Scheme.
  • the terminal device continues to measure the first reference CSI, and performs the process of judging whether the CSI feedback performance satisfies the first sub-condition again.
  • the terminal device determines whether to trigger the update process of the CSI feedback model by determining the similarity between the first reference CSI and the first restored CSI.
  • the degree of similarity between the first reference CSI and the first restored CSI is used to represent the degree of similarity between the first reference CSI and the first restored CSI.
  • the method for the terminal device to determine the similarity between the first reference CSI and the first restored CSI includes but not limited to: correlation calculation, cosine similarity calculation, and cosine similarity square calculation.
  • the terminal device uses one of the above methods to calculate the similarity between the first reference CSI and the first restored CSI. If the similarity is less than or equal to the second threshold, that is, the similarity between the first reference CSI and the first recovered CSI is low, the terminal device determines to trigger an update of the CSI feedback scheme; if the similarity is greater than or equal to the second threshold , the terminal device temporarily does not trigger an update of the CSI feedback scheme. Optionally, in this case, the terminal device continues to measure the first reference CSI, and performs the process of judging whether the CSI feedback performance satisfies the first sub-condition again.
  • the first threshold and/or the second threshold are decimals with a precision of n, where n is a positive integer.
  • the first threshold is a decimal with a precision of 1
  • the value of the first threshold may be any one of 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, and 0.9.
  • the precision of the second threshold is a decimal of 2
  • the value of the second threshold may be 0.95, 0.98, 0.99 and so on.
  • the first threshold may also be in units of dB (power), for example, the first threshold is equal to 1dB or 2dB, or 3dB, or 6dB, or m dB, where m is a positive integer.
  • the first threshold and the second threshold are stipulated in a protocol or configured by an access network device.
  • the first threshold and/or the second threshold are stipulated in an agreement, and information related to the first threshold and the second threshold is written in the terminal device.
  • the first threshold and/or the second threshold are configured by the access network device, and the access network device broadcasts a message, or an RRC (Radio Resource Control, radio resource control) message, or a MAC CE (Medium Access Control Control Element, Media access control control unit), or DCI (Downlink Control Information, downlink control information), or PDCCH (Physical Downlink Control Channel, physical downlink control channel) sends the configuration information of the first threshold and the second threshold to the terminal device.
  • the terminal device uses the first threshold or the second threshold configured by the configuration information to determine the timing to trigger the update of the CSI feedback scheme.
  • the process of triggering the update can be independently completed only by the terminal device. It helps to reduce the number of information interactions between the terminal device and the access network device during the process of triggering the update, and reduces the transmission resources consumed in the process of triggering the update.
  • the first reference CSI is compressed and restored through the CSI feedback scheme to obtain the first restored CSI.
  • the terminal device can complete a complete feedback process, which helps the terminal device to know in advance the effect of the access network device restoring the compressed first reference CSI information using the CSI feedback scheme.
  • the update of the CSI feedback scheme can be triggered in time, so as to improve the communication quality between the terminal device and the access network device.
  • the terminal device when the data transmission state between the terminal device and the access network device satisfies the second subcondition, the terminal device triggers an update of the CSI feedback scheme.
  • the second subcondition includes at least one of the following: the transmission success rate between the terminal device and the access network device is less than or equal to the first threshold; the transmission success rate between the terminal device and the access network device The transmission error rate is greater than or equal to the second threshold.
  • the transmission state between the terminal device and the access network device is used to characterize the data transmission between the terminal device and the access network device.
  • the transmission status between the terminal device and the access network device may be represented by the transmission success rate or transmission error rate of data or data packets between the terminal device and the access network device within a recent period of time.
  • the terminal device determines the transmission success rate or transmission failure rate between the terminal device and the access network device by using a method for detecting data transmission effects.
  • the terminal device detects the current transmission success rate through BLER (Block Error Rate, block error rate) or BER (Bit Error Ratio, bit error rate).
  • the terminal device compares the detected transmission success rate with the first threshold value, and determines whether to trigger an update of the CSI feedback scheme.
  • the terminal device determines to trigger an update of the CSI feedback scheme. If the transmission success rate is greater than or equal to the first threshold value, it indicates that the data transmission success rate between the terminal device and the access network device is relatively high, that is, the feedback effect of the CSI feedback scheme used by the terminal device and the access network device is better , the terminal device does not trigger to update the CSI feedback scheme.
  • the terminal device compares the detected transmission error rate with the second threshold, and determines whether to trigger an update of the CSI feedback scheme. If the output error rate is greater than or equal to the second threshold, it indicates that the feedback effect of the CSI feedback scheme currently used by the terminal device and the access network device may be poor, and the terminal device determines to trigger an update of the CSI feedback scheme.
  • the transmission error rate is less than or equal to the first threshold, it means that the feedback effect of the CSI feedback scheme currently used by the terminal device and the access network device may be better, and the terminal device does not trigger an update of the CSI feedback scheme.
  • the first threshold value and the second threshold value are stipulated in the protocol, or configured by the access network device.
  • the access network device sends the configuration information of the first threshold and the second threshold to the terminal device by means of one of broadcast message, RRC message, MAC CE, PDCCH, and the like.
  • the terminal device When the terminal device determines to trigger an update of the CSI feedback scheme, the terminal device needs to instruct the access network device to update the CSI feedback scheme.
  • the terminal device sends the first information to the access network device.
  • the access network device receives first information from the terminal device, where the first information is used to indicate that the CSI feedback solution needs to be updated.
  • the first information is used to directly indicate that the CSI feedback scheme needs to be updated; or, the first information is used to request an RS resource required for updating the CSI feedback scheme, so as to indirectly indicate that the CSI feedback scheme needs to be updated.
  • the data volume of the first information is a bit
  • the terminal device indicates that the access network device needs to update the currently used CSI feedback scheme through the 1-bit first information .
  • the access network device After receiving the first information, the access network device determines to update the currently used CSI feedback scheme.
  • the first information sent by the terminal device to the access network device is used to request to update RS resources required by the CSI feedback scheme.
  • the RS resource library includes multiple sets of RSs, and the terminal device selects RS resources with different time domain densities and frequency domain densities according to current communication requirements, and proposes RS resources to the access network device through the first information. resource request. For example, in a high-speed communication scenario, the terminal device requests an RS resource with a higher time domain density from the access network device through the first information.
  • the first information is further used to indicate that among the multiple CSI feedback schemes, an updated CSI feedback scheme needs to be updated.
  • the terminal device indicates multiple CSI feedback schemes that need to be updated through the first information, for example, the first information is 6 bits, specifically [0, 0, 1, 0, 1, 1], in the first information The numbers corresponding to the first CSI feedback scheme, the second CSI feedback scheme, ..., the sixth CSI feedback scheme from left to right, where "0" means that the CSI feedback scheme at the corresponding position is not updated, and "0 " indicates that the CSI feedback scheme of the corresponding location is updated, and the terminal device instructs the access network device to update the CSI feedback schemes labeled 3, 5, and 6.
  • the terminal device based on protocol regulations, several alternative CSI feedback solutions are stored in the terminal device, and these CSI feedback solutions can be pre-classified according to application scenarios and usage methods.
  • the terminal device triggers to update the currently used CSI feedback scheme
  • the CSI feedback scheme belonging to the same category as the CSI feedback scheme may also need to be updated.
  • the terminal device indicates according to the first information that the terminal device needs to update multiple CSI feedback schemes. For example, several CSI feedback schemes can be divided into categories such as indoor use, outdoor use, and mini-cell use according to the usage scenarios. If the terminal device triggers to update the CSI feedback scheme to the indoor use category, the terminal device can use the first information to indicate the access Network equipment updates the CSI feedback scheme for all indoor use categories.
  • the first information may directly indicate the category of the CSI feedback schemes that need to be updated, or may specifically indicate all the CSI feedback schemes that need to be updated.
  • the transmission mode of the first information includes at least one of the following: transmission carried on a PUCCH (Physical Uplink Control Channel, carried on a physical uplink control channel), carried on a PUSCH (Physical Uplink Shared Channel, carried on a physical uplink shared channel) transmission.
  • a PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • the terminal device and the access network device need to acquire part or all of the CSI feedback solutions for performing CSI feedback.
  • the CSI feedback scheme includes a CSI feedback model, and the CSI feedback model includes an encoder and a decoder, and the terminal device can obtain the encoder, and can also obtain the encoder and decoder.
  • the access network device can obtain a decoder, and can also obtain an encoder and a decoder.
  • the terminal device is configured according to the access network device, or is predefined by a protocol, or is configured by an operator.
  • the access network device instructs the terminal device to obtain the CSI feedback model through RRC message configuration, broadcast configuration, PDCCH, DCI indication, or MAC CE indication.
  • the access network device obtains the above-mentioned CSI feedback model through terminal device configuration, or protocol pre-definition, or operator configuration.
  • the terminal device indicates the manner in which the access network device obtains the CSI feedback solution through a UCI indication, or through an RRC message indication, and the like.
  • the access network device triggers an update of the CSI feedback scheme.
  • the method before the access network device sends the first reference signal to the terminal device, the method further includes: when the CSI feedback scheme satisfies the first condition, the access network device triggers an update of the CSI feedback scheme; the access network The device sends second information to the terminal device, where the second information is used to indicate that the CSI feedback solution needs to be updated.
  • the first condition is stipulated in the agreement, or configured by the access network device, or determined by the terminal device itself and provided to the access network device.
  • the first condition includes at least one of the following:
  • the transmission state between the terminal device and the access network device satisfies the second subcondition.
  • the access network device when the CSI feedback scheme satisfies the first sub-condition, the access network device triggers an update of the CSI feedback scheme.
  • FIG. 9 shows a process in which an access network device triggers an update of the CSI feedback scheme.
  • the first sub-condition includes at least one of the following: the deviation value between the first reference CSI and the first restored CSI is greater than or equal to a first threshold; the difference between the first reference CSI and the first restored CSI The similarity between them is less than or equal to the second threshold; wherein, the first restored CSI is the CSI obtained by compressing and restoring the first reference CSI through the CSI feedback scheme.
  • the first condition is stipulated in an agreement, or is configured by the access network device and provided to the terminal device, or is determined by the terminal device itself.
  • the first reference CSI is measured by the terminal device and sent to the access network device, or is predefined by a protocol, or is pre-stored by the access network device based on historical information.
  • FIG. 10 shows a process in which the terminal device sends the first reference CSI to the access network device.
  • the CSI is information sent by the access network device to the terminal device
  • the first terminal device needs to send the CSI to the access network device.
  • the terminal device sends the first reference CSI to the access network device through UCI (Uplink Control Information, uplink control information), or through an RRC message, or through uplink transmission of data information.
  • the access network device receives the first reference CSI sent by the terminal device through a corresponding method.
  • the access network device determines the performance of the CSI feedback scheme by using the obtained first reference CSI, and compares the performance of the CSI feedback scheme with the first sub-condition to determine an opportunity to trigger an update of the CSI feedback scheme.
  • the first reference CSI sent by the terminal device to the access network device is dynamically updated. For example, sending the first reference CSI by the terminal device to the access network device may be performed periodically.
  • the reporting period of the first reference CSI is greater than the reporting period of the CSI feedback solution.
  • the frequency at which the terminal device sends the compressed first reference information to the access network device is greater than the frequency at which the first reference information is sent to the access network device, that is, the first reference CSI received by the access network device may have A certain delay.
  • the period for the terminal device to send the first reference CSI to the access network device may be 100ms, 500ms, 1000ms, 2000ms, 5min, 10min, 30min, 1h, 3h and so on.
  • the access network device compresses and restores the received first reference CSI through the CSI feedback scheme to obtain the first restored CSI.
  • the CSI feedback scheme includes a CSI feedback model, eg, the CSI feedback model is a neural network model.
  • the CSI feedback model includes an encoder and a decoder, and the encoder and decoder are constructed based on a neural network model.
  • the access network device can obtain the first restored CSI based on the first reference CSI through the CSI feedback model.
  • the access network device compresses the first reference CSI through an encoder, and decompresses the compressed first reference CSI through a decoder to obtain the first restored CSI.
  • the access network device uses the protocol-predetermined first reference CSI.
  • the same protocol-predefined first reference CSI is stored in the terminal device and the access network device.
  • the terminal device periodically uses a CSI feedback scheme to compress the first reference CSI, and sends the compressed first reference CSI to the access network device.
  • the access network device receives the compressed first reference CSI sent by the terminal device, and restores the information through a CSI feedback scheme to obtain the first restored CSI.
  • the access network device determines the performance of the CSI feedback scheme by comparing the first reference CSI predefined in the protocol with the first restored CSI.
  • the access network device After the access network device obtains the first reference CSI and the first restored CSI, for the process of triggering an update of the CSI feedback scheme, please refer to the embodiment on the terminal device side, and details are not described here.
  • the access network device when the data transmission state between the terminal device and the access network device satisfies the second subcondition, the access network device triggers an update of the CSI feedback solution.
  • the second subcondition includes at least one of the following: the transmission success rate between the terminal device and the access network device is less than or equal to the first threshold; the transmission success rate between the terminal device and the access network device The transmission error rate is greater than or equal to the second threshold.
  • the access network device determining the timing of triggering the update of the CSI feedback scheme through the data transmission status between the terminal device and the access network device and the second sub-condition, please refer to the embodiment on the terminal device side, and details will not be described here.
  • the access network device determines to trigger an update of the CSI feedback scheme
  • the access network device sends the second information to the terminal device.
  • the terminal device receives second information from the access network device, where the second information is used to indicate that the CSI feedback solution needs to be updated.
  • the second information is used to directly indicate that the CSI feedback scheme needs to be updated; or, the second information is used to configure RS resources required for updating the CSI feedback scheme, so as to indirectly indicate that the CSI feedback scheme needs to be updated.
  • the access network device sends the second information to the terminal device, and the terminal device determines to update the CSI feedback solution after receiving the second information.
  • the second information is also used to indicate that among the multiple CSI feedback schemes, an updated CSI feedback scheme needs to be updated.
  • the transmission manner of the second information includes at least one of the following: transmission carried on a PDCCH, transmission carried on a PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel).
  • the access network device sends the second information to the terminal device through PDCCH transmission or PDSCH transmission, and after receiving the second information, the terminal device triggers to update one or more CSI feedback schemes based on the indication of the second information.
  • the second information received by the terminal device through the PDCCH is 1 bit, and the second information instructs the terminal device to update the currently used CSI feedback scheme.
  • the second information sent by the access network device to the terminal device is used to instruct the terminal device to update multiple feedback schemes, and the second information specifically indicates multiple CSI feedback schemes that need to be updated.
  • the terminal device updates the multiple CSI feedback schemes according to the indication of the second information.
  • the function of the second information sent by the access network device is the same as that of the first information sent by the terminal device, both of which are used to instruct the peer device to update the CSI feedback scheme.
  • the second information please refer to the above description of the first information, and details will not be repeated here.
  • the update of the CSI feedback scheme is triggered by the access network device, which helps to reduce the data processing burden on the terminal device side and save energy consumption of the terminal device.
  • the terminal device determines the data set required for updating the CSI feedback scheme according to the first reference signal.
  • the terminal device determines the data set required for updating the CSI feedback scheme according to the first reference signal, including: performing channel measurement based on the first reference signal to obtain CSI; determining the data required for updating the CSI feedback scheme according to the CSI set.
  • the terminal device uses the first reference signal to construct a data set required for updating the CSI feedback scheme, and after obtaining the CSI based on the channel measurement of the first reference signal, the terminal device uses the CSI as input information of the CSI feedback scheme; Alternatively, the feature vector corresponding to the CSI is used as input information of the CSI feedback scheme.
  • the terminal device performs channel measurement based on the received first reference signal to obtain the CSI.
  • the terminal device performs channel measurement on the first reference signal to obtain H, where H is a data set required for updating the constructed CSI feedback scheme.
  • H is a data set required for updating the constructed CSI feedback scheme.
  • the terminal device needs to send the data set to the access network device.
  • the terminal device extracts the information in the CSI, so as to reduce the data volume of the information sent to the access network device.
  • the terminal device performs channel measurement on the received first reference signal to obtain CSI, and performs feature extraction on the CSI to obtain a feature vector corresponding to the CSI.
  • the terminal device uses the feature vector corresponding to the CSI as a data set for updating the CSI feedback scheme.
  • the terminal device extracts the channel quality features in the CSI.
  • FIG. 11 shows a process for a terminal device to update a CSI feedback scheme.
  • the terminal device obtains the eigenvector W related to channel quality in H by performing singular value decomposition on CSI H, which is the data set required for updating the constructed CSI feedback scheme, that is, W is the input information of the CSI feedback scheme .
  • the terminal device and the access network device need to obtain part or all of the CSI feedback solutions for performing CSI feedback.
  • the method of obtaining the CSI feedback scheme please refer to the foregoing embodiments, and details are not described here.
  • the size of the compressed information of the CSI feedback scheme can be reduced, and the transmission resources consumed in the data transmission process can be reduced.
  • the feedback scheme requires less calculation in the process of compressing and restoring the eigenvector corresponding to the CSI, which helps to speed up the update speed of the CSI feedback model.
  • the update process of the CSI feedback scheme is introduced below through several embodiments.
  • the subject of updating the CSI feedback solution may be a terminal device or an access network device.
  • the terminal device updates the CSI feedback scheme.
  • the terminal device after the terminal device uses the first reference signal to construct the data set required for updating the CSI feedback scheme, it further includes: the terminal device updates the CSI feedback scheme based on the data set to obtain an updated CSI feedback scheme; the terminal device Send the updated CSI feedback scheme to the access network device.
  • the terminal device updates part of the CSI feedback scheme. For example, the terminal device updates the part used to compress the CSI related information in the CSI feedback scheme. In some embodiments, the terminal device updates the complete CSI feedback scheme.
  • the CSI feedback scheme includes a CSI feedback model including an encoder and a decoder.
  • the terminal device has at least an encoder, and optionally, the terminal device has an encoder and a decoder.
  • the terminal device may only update the encoder.
  • the terminal device can also update the encoder and the decoder at the same time.
  • the information in the data set used to update the CSI feedback scheme is CSI J1.
  • the terminal device inputs J1 (the second reference CSI) into the encoder, and the encoder compresses J1, and the compressed J1 is the feedback vector S.
  • the terminal device restores S to the restored channel J2 (the second restored CSI) through the decoder, and the terminal device adjusts the parameters in the encoder and decoder in the feedback model by calculating the deviation value or similarity between J1 and J2 to update the CSI feedback solution.
  • the terminal device determines to stop updating the CSI feedback solution in the following manner.
  • the terminal device updates the CSI feedback scheme based on the data set, and after obtaining the updated CSI feedback scheme, further includes: when the updated CSI feedback scheme satisfies the second condition, the terminal device stops processing the CSI The feedback scheme was updated.
  • the second condition is stipulated in the agreement, or is configured by the access network device and provided to the terminal device, or is determined by the terminal device itself.
  • the second condition includes at least one of the following:
  • the transmission state between the terminal device and the access network device satisfies the fourth sub-condition.
  • FIG. 13 shows a process in which the terminal device stops updating the CSI feedback scheme.
  • the terminal device stops updating the CSI feedback scheme when the CSI feedback scheme satisfies the third sub-condition.
  • the third sub-condition includes at least one of the following: the deviation value between the second reference CSI and the second restored CSI is less than or equal to the third threshold; the difference between the second reference CSI and the second restored CSI The similarity of is greater than or equal to the fourth threshold; wherein, the second restored CSI is the CSI obtained by compressing and restoring the second reference CSI through the updated CSI feedback scheme.
  • the deviation value between the second reference CSI and the second restored CSI is used to represent the degree of deviation between the second reference CSI and the second restored CSI
  • the similarity between the second reference CSI and the second restored CSI is used to represent the first The degree of similarity between the baseline CSI and the second restored CSI.
  • the determination method of the deviation value and similarity between the second reference CSI and the second restored CSI please refer to the calculation method of the deviation value and similarity between the first reference CSI and the first restored CSI, and details are not described here.
  • the second reference CSI is obtained by measurement by the terminal device.
  • FIG. 14 shows a process for the terminal device to stop updating the CSI feedback scheme.
  • the terminal device stops updating the CSI feedback scheme when the transmission status between the terminal device and the access network device satisfies the fourth subcondition.
  • the fourth subcondition includes at least one of the following: the transmission success rate between the terminal device and the access network device is greater than or equal to the third threshold; the transmission success rate between the terminal device and the access network device The transmission error rate is less than or equal to the fourth threshold.
  • the method of triggering to stop updating the CSI feedback scheme is similar to the method of triggering the updating of the CSI feedback scheme. Please refer to the above-mentioned embodiments for the specific process, and details are not described here.
  • the method further includes: when the terminal device determines to stop updating the CSI feedback scheme, sending third information to the access network device, where the third information is used to instruct the CSI feedback scheme to stop updating.
  • Figs. 15 and 16 respectively show two representation forms of the third information.
  • the terminal device After the terminal device determines to stop updating the CSI feedback scheme, the terminal device sends third information to the access network device to instruct the access network device to stop updating the CSI scheme.
  • the third information may directly instruct the access network device to stop updating the CSI feedback scheme, or may instruct the access network device to stop sending the first reference signal, thereby indirectly instructing to stop updating the CSI feedback scheme.
  • the access network device stops sending the first reference signal after receiving the third information sent by the terminal device.
  • FIG. 17 shows a process in which a terminal device sends an updated CSI feedback solution to an access network device.
  • the terminal device after updating the CSI feedback scheme, the terminal device sends the updated CSI feedback scheme to the access network device.
  • the terminal device may send a part of the updated feedback scheme to the access network device, so that the access network device can perform CSI feedback with the terminal device through this part of the CSI feedback scheme.
  • the terminal device may send the updated decoder to the access network device, or the terminal device may send the updated encoder and decoder to the access network device, so that the access network device can not only
  • the CSI feedback is completed with the terminal device, and the next update of the CSI feedback scheme can be triggered and completed through the updated CSI feedback scheme.
  • the terminal device sends the indication information of the updated CSI feedback scheme to the access network device, and the access network device adjusts the CSI feedback scheme according to the indication information of the CSI feedback scheme to obtain the updated CSI feedback scheme.
  • the access network device after receiving the updated CSI feedback scheme, performs CSI feedback with the terminal device using the updated CSI feedback scheme.
  • the terminal device may send the updated CSI feedback scheme to the access network device before sending the third information, or may send the updated CSI feedback scheme to the access network device after sending the third information.
  • the timing of sending the third information and the updated CSI feedback solution is not limited.
  • the terminal devices When the terminal device updates the CSI feedback scheme, the terminal devices use the constructed data set for updating the CSI feedback scheme, input the data set into the CSI feedback scheme, and update the CSI feedback scheme. In the process of updating the CSI feedback model of the terminal device, the times of data transmission with the access network device will not be increased, which helps to reduce signaling consumption.
  • the access network device updates the CSI feedback scheme.
  • the access network device after the access network device sends the first reference signal to the terminal device, it further includes: the access network device receives the data set sent by the terminal device; the access network device updates the CSI feedback scheme based on the data set, and obtains An updated CSI feedback scheme: the access network device sends the updated CSI feedback scheme to the terminal device.
  • the terminal device further includes: the terminal device sends the data set to the access network device; the access network device receives the data set sent by the terminal device Data set and update the CSI feedback scheme based on the data set. After updating the CSI feedback scheme, the access network device sends the updated CSI feedback scheme to the terminal device, and the terminal device receives the updated CSI feedback scheme from the access network device.
  • the access network device updates the CSI feedback scheme based on the data set, and after obtaining the updated CSI feedback scheme, further includes:
  • the update of the CSI feedback scheme is stopped.
  • the second condition includes at least one of the following:
  • the transmission state between the terminal device and the access network device satisfies the fourth sub-condition.
  • the access network device stops updating the CSI feedback scheme when the CSI feedback scheme satisfies the third sub-condition.
  • the third sub-condition includes at least one of the following: the deviation value between the second reference CSI and the second restored CSI is less than or equal to the third threshold; the difference between the second reference CSI and the second restored CSI The similarity of is greater than or equal to the fourth threshold; wherein, the second restored CSI is the CSI obtained by compressing and restoring the second reference CSI through the updated CSI feedback scheme.
  • the second reference CSI is measured by the terminal device and sent to the access network device, or is predefined by a protocol, or is pre-stored by the access network device based on historical information.
  • the access network device stops updating the CSI feedback scheme when the transmission status between the terminal device and the access network device satisfies the fourth subcondition.
  • the fourth subcondition includes at least one of the following: the transmission success rate between the terminal device and the access network device is greater than or equal to the third threshold; the transmission success rate between the terminal device and the access network device The transmission error rate is less than or equal to the fourth threshold.
  • the method that the access network device triggers to stop updating the CSI feedback scheme is similar to the method that the terminal device triggers to stop updating the CSI feedback scheme. Please refer to the above-mentioned embodiments for the specific process, and details are not described here.
  • the method further includes, when it is determined to stop updating the CSI feedback scheme, the access network device sends fourth information to the terminal device, where the fourth information is used to instruct the CSI feedback scheme to stop updating.
  • the access network device sends the updated CSI feedback solution to the terminal device.
  • the access network device may send a part of the updated CSI feedback scheme to the terminal device, so that the terminal device can complete the CSI feedback process with the access network device through the updated part of the feedback scheme, or the access network device may also The complete updated CSI feedback scheme can be sent to the terminal device, so that the terminal device cannot complete the CSI feedback process, and can use the updated CSI feedback scheme to complete the trigger update process of the next CSI feedback scheme.
  • the CSI feedback scheme includes a CSI feedback model, wherein the CSI feedback model includes an encoder and a decoder.
  • the access network device sends the updated encoder to the terminal device, or the access network device sends the updated encoder and decoder to the terminal device.
  • the terminal device uses the updated encoder to compress the CSI information, and sends the compressed CSI information to the access network device, and the access network device uses the updated decoder to decompress the compressed CSI information to obtain the restored CSI information , the terminal device and the access network device complete a CSI feedback process.
  • the process of the access network device sending the stop updating CSI feedback scheme and the updated CSI feedback scheme to the terminal device is similar to the process of the terminal device sending the third information and the updated CSI feedback scheme to the access network device.
  • the specific process please refer to the above The embodiment will not be repeated here.
  • the process of updating the CSI feedback scheme may include the following combination methods: 1.
  • the terminal device implements the trigger update and updates the CSI feedback scheme; 2.
  • the terminal equipment implements the trigger update of the CSI feedback model, and the access network device implements the CSI feedback scheme Update; 3.
  • the access network device implements trigger update and updates the CSI feedback scheme; 4.
  • the access network device implements trigger update of the CSI feedback scheme, and the terminal equipment implements update of the CSI feedback scheme.
  • terminal devices and access network devices can update the CSI feedback scheme at the same time.
  • the CSI feedback model includes encoders and decoders, encoders and decoders. All encoders are built on the basis of neural networks, the terminal equipment updates the encoder, and the access network equipment updates the decoder.
  • the CSI feedback scheme is updated in time when the feedback accuracy of the CSI scheme becomes poor. It helps to improve the adaptability of the CSI feedback scheme in flexible and changeable communication scenarios, and helps to improve the quality of data transmission between the terminal device and the access network device.
  • FIG. 18 shows a block diagram of an apparatus for updating a CSI feedback solution provided by an embodiment of the present application.
  • the apparatus has the function of realizing the above-mentioned method example on the terminal device side, and the function may be realized by hardware, or may be realized by executing corresponding software by hardware.
  • the apparatus may be the terminal device described above, or may be set in the terminal device.
  • the apparatus 1800 may include: a first receiving module 1810 and a data building module 1820 .
  • the first receiving module 1810 is configured to receive a first reference signal from an access network device, where the first reference signal is a reference signal for updating a CSI feedback scheme.
  • the data construction module 1820 is configured to determine a data set required for updating the CSI feedback solution according to the first reference signal.
  • the first receiving module is configured to: receive a first reference signal from the access network device according to first configuration information; wherein the first configuration information is used to indicate the first A transmission parameter of a reference signal.
  • the first configuration information is configured by the access network device and provided to the terminal device; or, the first configuration information is configured by the terminal device.
  • the density of the first reference signal in the time domain is greater than the density of the second reference signal in the time domain, and the second reference signal is a reference signal for supporting data transmission.
  • the device further includes: an update triggering module, configured to trigger an update of the CSI feedback scheme when the CSI feedback scheme satisfies a first condition; a first sending module, configured to send The access network device sends first information, where the first information is used to indicate that the CSI feedback solution needs to be updated.
  • the first condition includes at least one of the following: the performance of the CSI feedback scheme satisfies the first sub-condition; the transmission state between the terminal device and the access network device satisfies the first sub-condition Two sub-conditions.
  • the first sub-condition includes at least one of the following: the deviation value between the first reference CSI and the first restored CSI is greater than or equal to the first threshold; the first reference CSI and the first restored CSI The similarity between them is less than or equal to a second threshold; wherein, the first restored CSI is the CSI obtained by compressing and restoring the first reference CSI through the CSI feedback scheme.
  • the first reference CSI is obtained by measuring the terminal device.
  • the second subcondition includes at least one of the following: the transmission success rate between the terminal device and the access network device is less than or equal to a first threshold; the terminal device The transmission error rate with the access network device is greater than or equal to a second threshold.
  • the first condition is stipulated in an agreement, or is configured by the access network device and provided to the terminal device, or is determined by the terminal device itself.
  • the first information is used to directly indicate that the CSI feedback scheme needs to be updated; or, the first information is used to request to update the RS resources required by the CSI feedback scheme to indirectly indicate the The CSI feedback scheme needs updating.
  • the first information is further used to indicate that among the multiple CSI feedback schemes, an updated CSI feedback scheme needs to be updated.
  • the transmission manner of the first information includes at least one of the following: transmission carried on the PUCCH, transmission carried on the PUSCH.
  • the apparatus further includes a second receiving module, configured to: receive second information from the access network device, where the second information is used to indicate that the CSI feedback solution needs to be updated.
  • the second information is used to directly indicate that the CSI feedback scheme needs to be updated; or, the second information is used to configure RS resources required to update the CSI feedback scheme, so as to indirectly indicate the The CSI feedback scheme needs updating.
  • the second information is further used to indicate a CSI feedback scheme that needs to be updated among multiple CSI feedback schemes.
  • the transmission manner of the second information includes at least one of the following: transmission carried on the PDCCH, transmission carried on the PDSCH.
  • the device further includes: a scheme updating module, configured to update the CSI feedback scheme based on the data set, to obtain an updated CSI feedback scheme; a second sending module, configured to transmit the The updated CSI feedback scheme is sent to the access network device.
  • a scheme updating module configured to update the CSI feedback scheme based on the data set, to obtain an updated CSI feedback scheme
  • a second sending module configured to transmit the The updated CSI feedback scheme is sent to the access network device.
  • the device further includes: an update stop module, configured to stop updating the CSI feedback scheme when the updated CSI feedback scheme satisfies a second condition.
  • the second condition includes at least one of the following: the performance of the updated CSI feedback scheme satisfies the third subcondition; the transmission between the terminal device and the access network device The state satisfies the fourth subcondition.
  • the third sub-condition includes at least one of the following: the deviation value between the second reference CSI and the second recovery CSI is less than or equal to the third threshold; the second reference CSI and the second recovery CSI The similarity between is greater than or equal to the fourth threshold;
  • the second restored CSI is the CSI obtained by compressing and restoring the second reference CSI through the updated CSI feedback scheme.
  • the second reference CSI is obtained by measuring the terminal device.
  • the fourth subcondition includes at least one of the following: the transmission success rate between the terminal device and the access network device is greater than or equal to a third threshold; the terminal device The transmission error rate with the access network device is less than or equal to a fourth threshold.
  • the second condition is stipulated in an agreement, or is configured by the access network device and provided to the terminal device, or is determined by the terminal device itself.
  • the second sending module is further configured to: send third information to the access network device when it is determined to stop updating the CSI feedback scheme, and the third information uses Instructing the CSI feedback scheme to stop updating.
  • the apparatus further includes: a third sending module, configured to send the data set to the access network device; a third receiving module, configured to receive an update from the access network device The updated CSI feedback scheme, the updated CSI feedback scheme is obtained by the access network device updating the CSI feedback scheme based on the data set.
  • the CSI feedback scheme includes a CSI feedback model, and the CSI feedback model includes an encoder and a decoder; wherein, the encoder is used to encode and compress the CSI to obtain compressed CSI; the decoding The device is used to decode and restore the compressed CSI to obtain the restored CSI.
  • the data construction module 1820 is configured to perform channel measurement based on the first reference signal to obtain CSI; determine a data set required for updating the CSI feedback scheme according to the CSI.
  • the CSI is used as input information of the CSI feedback solution; or, the feature vector corresponding to the CSI is used as input information of the CSI feedback solution.
  • FIG. 19 shows a block diagram of an apparatus for updating a CSI feedback scheme provided by another embodiment of the present application.
  • the apparatus has the function of realizing the above-mentioned method example on the access network device side, and the function may be realized by hardware, or may be realized by executing corresponding software on the hardware.
  • the apparatus may be the access network equipment introduced above, or may be set in the access network equipment.
  • the apparatus 1900 may include: a first sending module 1910 .
  • the first sending module 1910 is configured to send a first reference signal to the terminal device, where the first reference signal is a reference signal used for CSI feedback scheme update, and the first reference signal is used to determine the CSI feedback scheme update required data set.
  • the first sending module 1910 is configured to: send the first reference signal to the terminal device according to the first configuration information; wherein the first configuration information is used to indicate the first A transmission parameter of a reference signal.
  • the first configuration information is configured by the access network device; or, the first configuration information is configured by the terminal device and provided to the access network device.
  • the density of the first reference signal in the time domain is greater than the density of the second reference signal in the time domain, and the second reference signal is a reference signal for supporting data transmission.
  • the apparatus further includes a first receiving module, configured to: receive first information from the terminal device, where the first information is used to indicate that the CSI feedback solution needs to be updated.
  • the first information is used to directly indicate that the CSI feedback scheme needs to be updated; or, the first information is used to request to update the reference signal RS resource required by the CSI feedback scheme to indirectly indicate The CSI feedback scheme needs to be updated.
  • the first information is further used to indicate that among the multiple CSI feedback schemes, an updated CSI feedback scheme needs to be updated.
  • the transmission manner of the first information includes at least one of the following: transmission carried on the PUCCH, transmission carried on the PUSCH.
  • the device further includes: an update triggering module, configured to trigger an update of the CSI feedback scheme when the CSI feedback scheme satisfies the first condition; a second sending module, configured to send the CSI feedback scheme to the The terminal device sends second information, where the second information is used to indicate that the CSI feedback solution needs to be updated.
  • the first condition includes at least one of the following: the performance of the CSI feedback scheme satisfies the first sub-condition; the transmission state between the terminal device and the access network device satisfies the first sub-condition Two sub-conditions.
  • the first sub-condition includes at least one of the following: the deviation value between the first reference CSI and the first restored CSI is greater than or equal to the first threshold; the first reference CSI and the first restored CSI The similarity between them is less than or equal to a second threshold; wherein, the first restored CSI is the CSI obtained by compressing and restoring the first reference CSI through the CSI feedback scheme.
  • the first reference CSI is measured by the terminal device and sent to the access network device, or is predefined by the protocol, or is pre-stored by the access network device based on historical information .
  • the second subcondition includes at least one of the following: the transmission success rate between the terminal device and the access network device is less than or equal to a first threshold; the terminal device The transmission error rate with the access network device is greater than or equal to a second threshold.
  • the first condition is stipulated in an agreement, or configured by the access network device, or determined by the terminal device itself and provided to the access network device.
  • the second information is used to directly indicate that the CSI feedback scheme needs to be updated; or, the second information is used to configure the reference signal RS resources required to update the CSI feedback scheme to indirectly indicate The CSI feedback scheme needs to be updated.
  • the second information is further used to indicate a CSI feedback scheme that needs to be updated among multiple CSI feedback schemes.
  • the transmission manner of the second information includes at least one of the following: transmission carried on the PDCCH, transmission carried on the PDSCH.
  • the apparatus further includes a second receiving module, configured to: receive an updated CSI feedback scheme sent by the terminal device, where the updated CSI feedback scheme is based on the data The set is obtained by updating the CSI feedback scheme.
  • the apparatus further includes: a third receiving module, configured to receive the data set sent by the terminal device; a first updating module, configured to perform the CSI feedback scheme based on the data set update, to obtain an updated CSI feedback scheme; a third sending module, configured to send the updated CSI feedback scheme to the terminal device.
  • the apparatus further includes: a stop updating module, configured to stop updating the CSI feedback scheme when the updated CSI feedback scheme satisfies a second condition.
  • the second condition includes at least one of the following: the performance of the updated CSI feedback scheme satisfies the third subcondition; the transmission between the terminal device and the access network device The state satisfies the fourth subcondition.
  • the third sub-condition includes at least one of the following: the deviation value between the second reference CSI and the second recovery CSI is less than or equal to the third threshold; the second reference CSI and the second recovery CSI similarity between
  • the degree is greater than or equal to a fourth threshold; wherein, the second restored CSI is the CSI obtained by compressing and restoring the second reference CSI through the updated CSI feedback scheme.
  • the second reference CSI is measured by the terminal device and sent to the access network device, or is predefined by the protocol, or is pre-stored by the access network device based on historical information .
  • the fourth subcondition includes at least one of the following: the transmission success rate between the terminal device and the access network device is greater than or equal to a third threshold; the terminal device The transmission error rate with the access network device is less than or equal to a fourth threshold.
  • the second condition is stipulated in an agreement, or configured by the access network device, or determined by the terminal device itself and provided to the access network device.
  • the third sending module is further configured to: when it is determined to stop updating the CSI feedback scheme, send fourth information to the terminal device, where the fourth information is used to indicate The CSI feedback scheme stops updating.
  • the CSI feedback scheme includes a CSI feedback model, and the CSI feedback model includes an encoder and a decoder; wherein, the encoder is used to encode and compress the CSI to obtain compressed CSI; the decoding The device is used to decode and restore the compressed CSI to obtain the restored CSI.
  • FIG. 20 shows a schematic structural diagram of a terminal device 2000 provided by an embodiment of the present application.
  • the terminal device 2000 may be used to execute the above method for updating the CSI feedback scheme on the terminal device side.
  • the terminal device 2000 may include: a processor 2001 , a transceiver 2002 and a memory 2003 .
  • the processor 2001 includes one or more processing cores, and the processor 2001 executes various functional applications and information processing by running software programs and modules.
  • the transceiver 2002 may include a receiver and a transmitter.
  • the receiver and the transmitter may be implemented as the same wireless communication component, and the wireless communication component may include a wireless communication chip and a radio frequency antenna.
  • the memory 2003 may be connected to the processor 2001 and the transceiver 2002 .
  • the memory 2003 may be used to store a computer program executed by the processor, and the processor 2001 is used to execute the computer program, so as to implement various steps performed by the terminal device in the foregoing method embodiments.
  • the memory 2003 can be implemented by any type of volatile or non-volatile storage device or their combination.
  • the volatile or non-volatile storage device includes but not limited to: magnetic disk or optical disk, electrically erasable and programmable Read Only Memory, Erasable Programmable Read Only Memory, Static Anytime Access Memory, Read Only Memory, Magnetic Memory, Flash Memory, Programmable Read Only Memory.
  • the transceiver 2002 is configured to receive a first reference signal from an access network device, where the first reference signal is a reference signal for updating a CSI feedback solution.
  • the processor 2001 is configured to determine a data set required for updating the CSI feedback scheme according to the first reference signal.
  • FIG. 21 shows a schematic structural diagram of an access network device 2100 provided by an embodiment of the present application.
  • the access network device 2100 may be configured to execute the above method for updating the CSI feedback solution on the access network device side.
  • the access network device 2100 may include: a processor 2101 , a transceiver 2102 and a memory 2103 .
  • the processor 2101 includes one or more processing cores, and the processor 2101 executes various functional applications and information processing by running software programs and modules.
  • Transceiver 2102 may include a receiver and a transmitter.
  • the transceiver 2102 may include a wired communication component, and the wired communication component may include a wired communication chip and a wired interface (such as an optical fiber interface).
  • the transceiver 2102 may also include a wireless communication component, and the wireless communication component may include a wireless communication chip and a radio frequency antenna.
  • the memory 2103 may be connected to the processor 2101 and the transceiver 2102 .
  • the memory 2103 may be used to store a computer program executed by the processor, and the processor 2101 is used to execute the computer program, so as to implement various steps performed by the access network device in the foregoing method embodiments.
  • the memory 2103 can be realized by any type of volatile or non-volatile storage device or their combination.
  • the volatile or non-volatile storage device includes but not limited to: magnetic disk or optical disk, electrically erasable and programmable Read Only Memory, Erasable Programmable Read Only Memory, Static Anytime Access Memory, Read Only Memory, Magnetic Memory, Flash Memory, Programmable Read Only Memory.
  • the transceiver 2102 is configured to send a first reference signal to a terminal device, where the first reference signal is a reference signal for updating a CSI feedback scheme, and the first reference signal is used for Determining data sets required for updating the CSI feedback scheme.
  • An embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a terminal device or a network device, so as to realize the update of the above-mentioned CSI feedback scheme method.
  • the computer-readable storage medium may include: ROM (Read-Only Memory, read-only memory), RAM (Random-Access Memory, random access memory), SSD (Solid State Drives, solid state drive) or an optical disc, etc.
  • the random access memory may include ReRAM (Resistance Random Access Memory, resistive random access memory) and DRAM (Dynamic Random Access Memory, dynamic random access memory).
  • the embodiment of the present application also provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip is run on a terminal device or an access network device, it is used to implement the update of the above-mentioned CSI feedback scheme method.
  • the embodiment of the present application also provides a computer program product or computer program, the computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and the processing of terminal equipment or access network equipment A device reads and executes the computer instructions from the computer-readable storage medium, so as to implement the above-mentioned method for updating the CSI feedback solution.
  • the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.
  • the "plurality” mentioned herein means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently.
  • the character “/” generally indicates that the contextual objects are an "or” relationship.
  • the numbering of the steps described herein only exemplarily shows a possible sequence of execution among the steps.
  • the above-mentioned steps may not be executed according to the order of the numbers, such as two different numbers
  • the steps are executed at the same time, or two steps with different numbers are executed in the reverse order as shown in the illustration, which is not limited in this embodiment of the present application.
  • the functions described in the embodiments of the present application may be implemented by hardware, software, firmware or any combination thereof.
  • the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage media may be any available media that can be accessed by a general purpose or special purpose computer.

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Abstract

La présente demande divulgue un procédé et un appareil pour mettre à jour une solution de rétroaction CSI, un dispositif et un support de stockage. Le procédé comprend : un dispositif de réseau d'accès envoie un premier signal de référence à un dispositif terminal, le premier signal de référence étant un signal de référence utilisé pour mettre à jour une solution de rétroaction CSI, et le premier signal de référence étant utilisé pour déterminer un ensemble de données requis pour mettre à jour la solution de rétroaction CSI (510) ; et le dispositif terminal détermine, en fonction du premier signal de référence, l'ensemble de données requis pour mettre à jour la solution de rétroaction CSI (520). La présente demande concerne un procédé de mise à jour d'une solution de rétroaction CSI pendant une communication entre un dispositif terminal et un dispositif de réseau d'accès, ce qui est utile pour améliorer la capacité adaptative de la solution de rétroaction CSI à des scénarios de communication souples et modifiables, et peut améliorer la qualité de communication entre le dispositif terminal et le dispositif de réseau d'accès.
PCT/CN2021/130159 2021-11-11 2021-11-11 Procédé et appareil pour mettre à jour une solution de rétroaction csi, dispositif et support de stockage WO2023082154A1 (fr)

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PCT/CN2021/130159 WO2023082154A1 (fr) 2021-11-11 2021-11-11 Procédé et appareil pour mettre à jour une solution de rétroaction csi, dispositif et support de stockage

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CN106941391A (zh) * 2016-01-04 2017-07-11 中兴通讯股份有限公司 信道状态信息csi上报的方法及装置
CN108574521A (zh) * 2017-03-10 2018-09-25 上海诺基亚贝尔股份有限公司 用于mimo通信的方法和设备
CN110830215A (zh) * 2018-08-10 2020-02-21 华为技术有限公司 用于上报csi的方法和装置
WO2021073709A1 (fr) * 2019-10-14 2021-04-22 Nokia Technologies Oy Optimisation de signalisation pour estimer une qualité d'un canal
WO2021077372A1 (fr) * 2019-10-24 2021-04-29 Telefonaktiebolaget Lm Ericsson (Publ) Procédé et nœud de réseau d'accès pour gestion de faisceaux

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Publication number Priority date Publication date Assignee Title
CN106941391A (zh) * 2016-01-04 2017-07-11 中兴通讯股份有限公司 信道状态信息csi上报的方法及装置
CN108574521A (zh) * 2017-03-10 2018-09-25 上海诺基亚贝尔股份有限公司 用于mimo通信的方法和设备
CN110830215A (zh) * 2018-08-10 2020-02-21 华为技术有限公司 用于上报csi的方法和装置
WO2021073709A1 (fr) * 2019-10-14 2021-04-22 Nokia Technologies Oy Optimisation de signalisation pour estimer une qualité d'un canal
WO2021077372A1 (fr) * 2019-10-24 2021-04-29 Telefonaktiebolaget Lm Ericsson (Publ) Procédé et nœud de réseau d'accès pour gestion de faisceaux

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