Channel state information acquisition method and apparatus, device, and medium

Abstract

The present application discloses a channel state information (CSI) acquisition method and apparatus, a device, and a medium, and belongs to the field of communications. The method is executed by a network device, and the method comprises: on the basis of first CSI and auxiliary information, determining second CSI, the first CSI being CSI between the network device and a first terminal device, the second CSI being CSI between the network device and a second terminal device, and the auxiliary information comprising information corresponding to the terminal device and used to determine the second CSI. The method supports determining second CSI by means of the first CSI and the auxiliary information, effectively reducing power consumption and resource overhead required by a communication device to measure a reference signal or feed back CSI.

Description

Method, device, equipment and medium for obtaining channel state information Technical Field

[0001] The present application relates to the field of communications, and in particular to a method, apparatus, device, and medium for acquiring channel state information. Background Art

[0002] Communication devices periodically measure reference signals to obtain channel state information (CSI) or periodically feed back CSI information, which consumes a large amount of air interface resource overhead and causes the communication devices to generate high power consumption, which is not conducive to resource utilization efficiency.

[0003] How to reduce the power consumption required by communication devices to obtain CSI is a problem that needs to be solved.

[0004] Summary of the Invention

[0005] The present application provides a method, apparatus, device, and medium for acquiring channel state information. The technical solution at least includes:

[0006] According to one aspect of an embodiment of the present application, a method for acquiring channel state information is provided, the method being executed by a network device, the method comprising:

[0007] determining second CSI based on the first CSI and the auxiliary information;

[0008] The first CSI is the CSI between the network device and the first terminal device, the second CSI is the CSI between the network device and the second terminal device, and the auxiliary information includes information corresponding to the terminal device for determining the second CSI.

[0009] According to another aspect of an embodiment of the present application, a method for acquiring channel state information is provided, the method being executed by a first terminal device, the method including:

[0010] Sending a first CSI to a network device;

[0011] Sending first auxiliary information or a first signal to the network device;

[0012] The first CSI is the CSI between the network device and the first terminal device, the first signal is used to determine the first auxiliary information, the first auxiliary information includes information corresponding to the first terminal device for determining the second CSI, and the second CSI is the CSI between the network device and the second terminal device.

[0013] According to another aspect of an embodiment of the present application, a method for acquiring channel state information is provided, the method being performed by a second terminal device, the method including:

[0014] sending the second auxiliary information or the first signal to the network device;

[0015] The first signal is used to determine the second auxiliary information, the second auxiliary information includes information corresponding to the second terminal device for determining the second CSI, and the second CSI is the CSI between the network device and the second terminal device.

[0016] According to another aspect of an embodiment of the present application, a device for acquiring channel state information is provided, the device including:

[0017] a processing module, configured to determine a second CSI based on the first CSI and the auxiliary information;

[0018] The first CSI is the CSI between the apparatus and a first terminal device, the second CSI is the CSI between the apparatus and a second terminal device, and the auxiliary information includes information corresponding to the terminal device for determining the second CSI.

[0019] According to another aspect of an embodiment of the present application, a device for acquiring channel state information is provided, the device including:

[0020] A sending module, configured to send the first CSI to the network device;

[0021] The sending module is further configured to send first auxiliary information or a first signal to the network device;

[0022] The first CSI is the CSI between the network device and the apparatus, the first signal is used to determine the first auxiliary information, the first auxiliary information includes information corresponding to the apparatus for determining the second CSI, and the second CSI is the CSI between the network device and the second terminal device.

[0023] According to another aspect of an embodiment of the present application, a device for acquiring channel state information is provided, the device including:

[0024] A sending module, configured to send the second auxiliary information or the first signal to the network device;

[0025] The first signal is used to determine the second auxiliary information, the second auxiliary information includes information corresponding to the device for determining the second CSI, and the second CSI is the CSI between the network device and the device.

[0026] According to one aspect of an embodiment of the present application, a communication device is provided, the communication device including:

[0027] processor;

[0028] a receiver and / or transmitter connected to the processor;

[0029] a memory for storing executable instructions for the processor;

[0030] The communication device is used to implement the channel state information acquisition method as described above.

[0031] According to one aspect of the present application, a computer-readable storage medium is provided, in which executable instructions are stored. The executable instructions are loaded and executed by the processor to implement the method for obtaining channel state information as described in the above aspect.

[0032] According to one aspect of the present application, a computer program product is provided, which includes computer instructions, wherein the computer instructions are stored in a computer-readable storage medium, and a processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes to implement the channel state information acquisition method as described in the above aspect.

[0033] According to one aspect of the present application, a chip is provided, which includes a programmable logic circuit and / or program instructions, and when the chip is running, it is used to implement the method for obtaining channel state information as described in the above aspect.

[0034] According to one aspect of the present application, a computer program is provided, which includes computer instructions. A processor of a computer device executes the computer instructions, so that the computer device executes the channel state information acquisition method as described in the above aspect.

[0035] The technical solutions provided by the embodiments of the present application may have the following beneficial effects:

[0036] Supports determining the second CSI using the first CSI and auxiliary information. Since the acquisition of the second CSI does not rely on reference signal measurement or CSI feedback between the network device and the second UE, the total amount of CSI feedback and reference signal transmission between the network device and the UE is reduced, effectively reducing the power consumption and resource overhead required by the communication device to measure reference signals or feedback CSI information. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0038] FIG1 shows a schematic diagram of a wireless communication system provided by an exemplary embodiment of the present application;

[0039] FIG2 is a schematic flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0040] FIG3 is a schematic flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0041] FIG4 is a schematic flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0042] FIG5 shows a schematic diagram of obtaining auxiliary information provided by an exemplary embodiment of the present application;

[0043] FIG6 is a schematic diagram showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0044] FIG7 is a schematic flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0045] FIG8 is a schematic flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0046] FIG9 is a schematic flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0047] FIG10 is a schematic flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0048] FIG11 shows a structural block diagram of a device for acquiring channel state information provided by an exemplary embodiment of the present application;

[0049] FIG12 shows a structural block diagram of a device for acquiring channel state information provided by an exemplary embodiment of the present application;

[0050] FIG13 shows a structural block diagram of a device for acquiring channel state information provided by an exemplary embodiment of the present application;

[0051] FIG14 shows a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0052] To make the objectives, technical solutions, and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings. Exemplary embodiments will be described in detail herein, with examples shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0053] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0054] It should be understood that although the terms first, second, third, etc. may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0055] 1 shows a schematic diagram of a wireless communication system provided by an exemplary embodiment of the present application. The wireless communication system includes a network device 110 and a terminal device 120, and / or a terminal device 120 and a terminal device 130, which are not limited in the present application.

[0056] The network device 110 in the present application provides wireless communication functions, and the network device 110 includes but is not limited to: Evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (e.g., Home Evolved Node B, or Home Node B, HNB), Baseband Unit (BBU), Access Point (AP) in Wireless Fidelity (Wi-Fi) system, Wireless Relay Node, Wireless Backhaul Node, Transmission Point (TP) or Transmission and Reception Point (TRP), etc., and can also be the Next Generation Node B (NGNB) in the 5th Generation (5G) mobile communication system. The invention relates to a base station (gNB) or a transmission point (TRP or TP), or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DU), or a base station in a Beyond Fifth Generation (B5G) mobile communication system or a sixth generation (6G) mobile communication system, or a core network (CN), fronthaul, backhaul, radio access network (RAN), network slice, or a reader / writer in a radio frequency identification (RFID) system.

[0057] The terminal device 120 and / or terminal device 130 in this application are also called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, and user device. The terminals include, but are not limited to, handheld devices, wearable devices, vehicle-mounted devices, and Internet of Things devices, such as electronic tags, controllers, mobile phones, tablet computers, e-book readers, laptop computers, desktop computers, televisions, game consoles, mobile Internet devices (MIDs), augmented reality (AR) terminals, virtual reality (VR) terminals, and mixed reality (MR) terminals, wearable devices, handles, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, wireless terminals in remote medical surgery, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loops (WLANs), and wireless terminals in industrial control. Loop (WLL) stations, personal digital assistants (PDA), TV set-top boxes (STB), customer premises equipment (CPE), etc.

[0058] The network device 110 and the terminal device 120 communicate with each other via some air interface technology, such as a Uu interface.

[0059] Exemplarily, there are two communication scenarios between the network device 110 and the terminal device 120: an uplink communication scenario and a downlink communication scenario. Uplink communication refers to sending signals to the network device 110; downlink communication refers to sending signals to the terminal device 120.

[0060] The terminal device 120 and the terminal device 130 communicate with each other via a direct communication interface, such as a PC5 interface.

[0061] In some embodiments, there are two communication scenarios between terminal device 120 and terminal device 130: a first sideline communication scenario and a second sideline communication scenario. The first sideline communication refers to sending signals to terminal device 130, while the second sideline communication refers to sending signals to terminal device 120.

[0062] Terminal device 120 and terminal device 130 are both within the network coverage and located in the same cell, or terminal device 120 and terminal device 130 are both within the network coverage but located in different cells, or terminal device 120 is within the network coverage but terminal device 130 is outside the network coverage.

[0063] The technical solutions provided in the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Advanced Long Term Evolution (LTE-A) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, 5G mobile communication system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-based access to unlicensed spectrum) system. Unlicensed spectrum, NR-U) system, terrestrial communication network (Terrestrial Networks, TN) system, non-terrestrial communication network (Non-Terrestrial Networks, NTN) system, wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, Wi-Fi), cellular Internet of Things system, cellular passive Internet of Things system, ambient power Internet of Things (Ambient Power Enabled Internet of Things, Ambient IoT / A-IoT) system, zero power Internet of Things system, can also be applied to the subsequent evolution system of the 5G NR system, and can also be applied to B5G, 6G and subsequent evolution systems. In some embodiments of the present application, "NR" may also be referred to as a 5G NR system or a 5G system.Among them, the 5G mobile communication system may include non-standalone networking (NSA) and / or standalone networking (SA).

[0064] The technical solutions provided in the embodiments of the present application can also be applied to machine type communication (MTC), long term evolution technology for machine-to-machine communication (LTE-M), device-to-device (D2D) network, machine-to-machine (M2M) network, Internet of Things (IoT) network or other networks. Among them, the IoT network can include, for example, the Internet of Vehicles. Among them, the communication mode in the Internet of Vehicles system is collectively referred to as vehicle to other devices (Vehicle to X, V2X, X can represent anything), for example, the V2X can include: vehicle to vehicle (V2V) communication, vehicle to infrastructure (V2I) communication, vehicle to pedestrian communication (V2P) or vehicle to network (V2N) communication, etc.

[0065] The wireless communication system provided in this embodiment can be applied to, but is not limited to, at least one of the following communication scenarios: an uplink communication scenario, a downlink communication scenario, and a sidelink communication scenario.

[0066] In the communication system shown in FIG1 , if you want to improve communication quality and ensure system communication efficiency, you need to obtain accurate channel quality or channel state changes.

[0067] Taking the downlink channel between the network device 110 and the terminal device 120 as an example, the terminal device 120 feeds back the downlink channel quality to the network device 110 through the channel state information (CSI), so that the network device 110 can adopt appropriate signal transmission parameters during downlink transmission, such as modulation and coding strategy (MCS) parameters, precoding scheme, time domain resources, frequency domain resources, etc., thereby improving the downlink transmission quality, such as reducing the block error rate (BLER) of the downlink transmission.

[0068] CSI may include at least one of the following: Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), CSI Reference Signal Resource Indicator (CSI-RS Resource Indicator, CRI), Synchronization Signal Block Resource Indicator (SS / PBCH Block Resource Indicator, SSBRI), Layer Indicator (LI), Rank Indicator (RI), Layer 1 Reference Signal Received Power (L1-RSRP).

[0069] Exemplarily, the terminal device 120 obtains CSI by measuring downlink CSI-RS, and reports the CSI to the network device 110. The CSI-RS can be configured to be sent periodically, semi-statically, or aperiodically.

[0070] Taking the uplink channel between the terminal device 120 and the network device 110 as an example, the network device 110 obtains the uplink channel quality by measuring the uplink reference signal sent by the terminal device 120, so that the network device 110 can adopt appropriate signal transmission parameters when scheduling the terminal device 120 for uplink transmission, such as MCS parameters, precoding scheme, time domain resources, frequency domain resources, etc., thereby improving the uplink transmission quality, such as reducing the BLER of the uplink transmission.

[0071] In a time division duplex (TDD) system, the network device 110 may obtain uplink channel quality through an uplink reference signal, and then obtain downlink channel quality using channel reciprocity.

[0072] The channel quality estimation method in the sidelink communication scenario can refer to the uplink communication scenario and the downlink communication scenario. Taking the sidelink channel between terminal device 120 and terminal device 130 as an example, terminal device 120 can feedback the first sidelink channel quality to terminal device 130 via channel state information (CSI), or can obtain the second sidelink channel quality by measuring the reference signal from terminal device 130.

[0073] However, complete or periodic CSI feedback consumes a significant amount of air interface resource overhead and results in high power consumption for communication devices, hindering resource utilization efficiency. Using vector quantization (VQ) or codebook-based methods to reduce overhead will result in a certain degree of loss of channel information. Furthermore, the amount of feedback generated by these methods increases exponentially with the number of transmit antennas.

[0074] Based on the above problems, the present application provides a method, apparatus, device and medium for obtaining channel state information, which reduces the power consumption required for communication equipment to obtain channel state information and improves the efficiency of obtaining channel state information.

[0075] In the embodiment of the present application, CSI feedback is also called CSI backtransmission or CSI reporting.

[0076] In the embodiments of the present application, "agreement" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a communication device (such as a terminal device or a network device), and the present application does not limit the specific implementation method. Agreeing by a communication protocol can also be understood as being predefined by the communication protocol.

[0077] FIG2 is a flow chart of a method for acquiring channel state information provided by an exemplary embodiment of the present application. The method is executed by the network device shown in FIG1 . The method includes:

[0078] Step 220: Determine the second CSI based on the first CSI and the auxiliary information.

[0079] The first CSI is the CSI between the network device and the first UE, and the second CSI is the CSI between the network device and the second UE.

[0080] In some embodiments, the first CSI is the CSI of the downlink channel between the network device and the first UE, that is, the first CSI can reflect the channel quality or channel state change of the downlink channel from the network device to the first UE. The second CSI is the CSI of the downlink channel between the network device and the second UE, that is, the second CSI can reflect the channel quality or channel state change of the downlink channel from the network device to the second UE.

[0081] In some embodiments, the first CSI is the CSI of the uplink channel between the network device and the first UE, that is, the first CSI can reflect the channel quality or channel state change of the uplink channel from the first UE to the network device. The second CSI is the CSI of the uplink channel between the network device and the second UE, that is, the second CSI can reflect the channel quality or channel state change of the uplink channel from the second UE to the network device.

[0082] In some embodiments, the first CSI is the CSI of a downlink channel between the network device and the first UE, and the second CSI is the CSI of an uplink channel between the network device and the second UE.

[0083] In some embodiments, the first CSI is the CSI of an uplink channel between the network device and the first UE, and the second CSI is the CSI of a downlink channel between the network device and the second UE.

[0084] The auxiliary information includes information corresponding to the UE used to determine the second CSI. Alternatively, the auxiliary information includes information about the UE related to determining the second CSI. Optionally, the UE includes the first UE and / or the second UE. Optionally, the UE includes some or all UEs within the signal coverage of the network device. Optionally, the UE includes some or all UEs using the network device as a serving cell.

[0085] In some embodiments, the CSI includes at least one of the following: CQI, PMI, CRI, SSBRI, layer indicator, rank indicator, L1-RSRP.

[0086] In summary, the method provided in the embodiments of the present application supports determining the second CSI using the first CSI and auxiliary information. Because the acquisition of the second CSI does not rely on reference signal measurement or CSI feedback between the network device and the second UE, the total amount of CSI feedback and the total amount of reference signal transmission between the network device and the UE are reduced, effectively reducing the power consumption and resource overhead required by the communication device to measure reference signals or feedback CSI information. Furthermore, there is no need to use vector quantization or codebook-based methods to reduce the air interface resources required for CSI feedback, thus avoiding the loss of channel information between the network device and the second UE.

[0087] In some embodiments, step 220 may be implemented as step 380. Optionally, in addition to step 380, the method for acquiring channel state information may further include one or more of steps 320, 340, and 360, as shown in FIG3 . FIG3 shows a flow chart of a method for acquiring channel state information provided by an exemplary embodiment of the present application, the method being executed by the network device shown in FIG1 or FIG2 , and the method comprising:

[0088] Step 320: Obtain first auxiliary information;

[0089] The first auxiliary information includes information corresponding to the first UE and used to determine the second CSI.

[0090] In some embodiments, the first auxiliary information includes at least one of the following information:

[0091] Location information of the first UE;

[0092] Distance information between the first UE and the network device;

[0093] Direction information of the first UE relative to the network device;

[0094] Beam information corresponding to the first UE;

[0095] • Location correlation between the first UE and a third UE, the third UE including a UE other than the first UE.

[0096] The location information of the first UE is used to indicate the absolute location and / or relative location of the first UE.

[0097] In some embodiments, the absolute position refers to the latitude and longitude position. The absolute position is also called the absolute geographic location. Exemplarily, the location information can indicate the absolute position of the first UE by latitude and longitude or coordinates.

[0098] In some embodiments, the relative position refers to the position relative to a reference point, and the reference point may be a second UE or a network device or a third UE or another UE. The relative position is also referred to as a relative geographic location. Exemplarily, the position information may indicate the relative position of the first UE by coordinates, or the position information may indicate the relative position of the first UE by a latitude and longitude offset value relative to a reference point. Exemplarily, the reference point is a network device, and within the cell range corresponding to the network device, several areas are divided with the network device as a reference point, and the relative position of the first UE is indicated by an area number (Number) or an area index (Index) or an area identifier (Identity, ID).

[0099] The location information of the first UE carried in the first auxiliary information can facilitate the network device to know the location of one or more first UEs. If the location information of the first UE is combined with the first CSI corresponding to the one or more first UEs, the channel status or channel quality between the first UEs located at different locations and the network device can be further obtained, which facilitates the network device to clarify the differences or correlations between the various first channels. The first channel is the channel between the first UE and the network device, and the first channel includes a downlink channel and / or an uplink channel.

[0100] The distance information between the first UE and the network device is used to indicate the distance between the first UE and the network device.

[0101] The direction information of the first UE relative to the network device is used to indicate the direction of the first UE relative to the network device. Exemplarily, the direction of the first UE relative to the network device can be represented by east, south, west, north, southeast, southwest, northeast, or northwest. Exemplarily, the direction of the first UE relative to the network device can be represented by a latitude and longitude offset value. Exemplarily, the direction of the first UE relative to the network device can be represented by a relative angle. Exemplarily, the direction of the first UE relative to the network device can be represented by coordinates.

[0102] The corresponding beam information of the first UE is used to indicate the beam used by the first UE for uplink transmission and / or downlink transmission. The beam information carried by the first auxiliary information can be used by the network device to obtain the channel status or channel quality from the first UE located in different directions to the network device, so that the network device can clearly understand the differences or correlations between the channels corresponding to different beam directions.

[0103] The location correlation between the first UE and the third UE is used to indicate that the first UE and the third UE are associated in location.

[0104] In some embodiments, the first UE and the third UE have at least one of the following location associations:

[0105] The distance between the third UE and the first UE is less than a first threshold;

[0106] The third UE and the first UE belong to the same area;

[0107] The first distance and the second distance are the same, wherein the first distance refers to the distance between the first UE and the network device, and the second distance refers to the distance between the third UE and the network device;

[0108] The difference between the first distance and the second distance is less than a second threshold;

[0109] The third UE and the first UE are in the same direction relative to the network device;

[0110] The angle between the direction of the third UE relative to the network device and the direction of the first UE relative to the network device is smaller than a third threshold.

[0111] In some embodiments, the location association between the first UE and the third UE is determined based on the first auxiliary information. Alternatively, the location association between the first UE and the third UE is determined based on the first auxiliary information and third auxiliary information, where the third auxiliary information includes information corresponding to the third UE for determining the second CSI. Alternatively, the location association between the first UE and the third UE is determined based on the first CSI and third CSI, where the third CSI is CSI between the network device and the third UE.

[0112] In some embodiments, when the first UE and the third UE are associated in position as described above, it is determined that there is position correlation between the first UE and the third UE.

[0113] In some embodiments, when the distance between the first UE and the third UE is less than a first threshold, it is determined that there is location correlation between the first UE and the third UE, wherein the distance between the first UE and the third UE is determined based on the first auxiliary information and the second auxiliary information.

[0114] In the present application, the first threshold is determined by the network device, or agreed upon by the communication protocol, or determined by negotiation between the network device and the UE.

[0115] In the present application, the second threshold is determined by the network device, or agreed upon by the communication protocol, or determined by negotiation between the network device and the UE.

[0116] In the present application, the third threshold is determined by the network device, or agreed upon by the communication protocol, or determined by negotiation between the network device and the UE.

[0117] In some embodiments, step 320 may be implemented as step 320a or step 320b.

[0118] Step 320a: Receive first assistance information from the first UE.

[0119] In some embodiments, before executing step 320a, the network device sends a second signal to the first UE, wherein the second signal is used to determine the first auxiliary information.

[0120] In an embodiment of the present application, the second signal includes a reference signal, or the second signal includes an auxiliary signal.

[0121] In the embodiment of the present application, the second signal includes a reference signal used to determine the auxiliary information, or the second signal includes an auxiliary signal used to determine the auxiliary information.

[0122] In some embodiments, the second signal includes a downlink reference signal. Exemplarily, the second signal includes a signal used for downlink channel measurement.

[0123] In this embodiment of the present application, the second signal includes at least one of the following:

[0124] Synchronization signal;

[0125] Positioning Reference Signal (PRS);

[0126] Tracking Reference Signal (TRS);

[0127] Channel State Information Reference Signal (CSI-RS)

[0128] In some embodiments, the first UE sends the first assistance information periodically, or sends the first assistance information based on a semi-static configuration, or sends the first assistance information aperiodically.

[0129] In some embodiments, the network device sends the second signal periodically, or sends the second signal based on a semi-static configuration, or sends the second signal aperiodically.

[0130] Step 320b: Determine first auxiliary information based on the first signal sent by the first UE.

[0131] In some embodiments, the first assistance information is determined based on a measurement result of a first signal sent by the first UE.

[0132] In an embodiment of the present application, the measurement result may be expressed by at least one of the following: a reference signal received power (RSRP) value, a reference signal strength indicator (RSSI) value, a reference signal received quality (RSRQ) value, a signal to interference plus noise ratio (SINR) value, a cross link interference (CLI) value, and a channel state information (CSI) value.

[0133] In an embodiment of the present application, the first signal includes a reference signal, or the first signal includes an auxiliary signal.

[0134] In the embodiment of the present application, the first signal includes a reference signal used to determine the auxiliary information, or the first signal includes an auxiliary signal used to determine the auxiliary information.

[0135] In some embodiments, the first signal includes an uplink reference signal. Exemplarily, the first signal includes a signal for uplink channel measurement.

[0136] In some embodiments, the first signal includes at least one of the following:

[0137] Demodulation Reference Signal (DMRS);

[0138] Sounding Reference Signal (SRS)

[0139] In some embodiments, the first UE sends the first signal periodically, or sends the first signal based on a semi-static configuration, or sends the first signal aperiodically.

[0140] Step 340: Obtain second auxiliary information;

[0141] In some embodiments, the second auxiliary information includes at least one of the following information:

[0142] Location information of the second UE;

[0143] Distance information between the second UE and the network device;

[0144] Direction information of the second UE relative to the network device;

[0145] Beam information corresponding to the second UE;

[0146] • Location correlation between the first UE and the second UE.

[0147] The location information of the second UE is used to indicate the absolute location and / or relative location of the second UE.

[0148] In some embodiments, the absolute position refers to the latitude and longitude position. The absolute position is also called the absolute geographical location. Exemplarily, the location information may indicate the absolute position of the second UE by latitude and longitude or coordinates.

[0149] In some embodiments, the relative position refers to the position relative to a reference point, and the reference point can be the first UE or the network device or the third UE or other UE. The relative position is also called the relative geographic location. Exemplarily, the position information can indicate the relative position of the second UE by coordinates, or the position information can indicate the relative position of the second UE by latitude and longitude offset values ​​relative to the reference point. Exemplarily, the reference point is a network device, and within the cell range corresponding to the network device, several areas are divided with the network device as the reference point, and the relative position of the first UE is indicated by the area number or area index or area ID.

[0150] The location information of the second UE carried in the second auxiliary information can help the network device to know the location of the second UE.

[0151] The distance information between the second UE and the network device is used to indicate the distance between the second UE and the network device.

[0152] The direction information of the second UE relative to the network device is used to indicate the direction of the second UE relative to the network device. Exemplarily, the direction of the second UE relative to the network device can be represented by east, south, west, north, southeast, southwest, northeast, or northwest. Exemplarily, the direction of the second UE relative to the network device can be represented by a latitude and longitude offset value. Exemplarily, the direction of the second UE relative to the network device can be represented by a relative angle. Exemplarily, the direction of the second UE relative to the network device can be represented by coordinates.

[0153] The corresponding beam information of the second UE is used to indicate the beam used by the second UE for uplink transmission and / or downlink transmission.

[0154] The location correlation between the second UE and the first UE is used to indicate that the first UE and the second UE are associated in location.

[0155] In some embodiments, the first UE and the second UE have at least one of the following location associations:

[0156] The distance between the second UE and the first UE is less than a first threshold;

[0157] The second UE and the first UE belong to the same area;

[0158] The first distance and the second distance are the same, wherein the first distance refers to the distance between the first UE and the network device, and the second distance refers to the distance between the second UE and the network device;

[0159] The difference between the first distance and the second distance is less than a second threshold;

[0160] The second UE and the first UE are in the same direction relative to the network device;

[0161] The angle between the direction of the second UE relative to the network device and the direction of the first UE relative to the network device is smaller than a third threshold.

[0162] In some embodiments, the location association between the first UE and the second UE is determined based on the first assistance information and the second assistance information.

[0163] In some embodiments, when the first UE and the second UE are associated in position as described above, it is determined that there is position correlation between the first UE and the second UE.

[0164] In some embodiments, when the distance between the first UE and the second UE is less than a first threshold, it is determined that there is location correlation between the first UE and the second UE, wherein the distance between the first UE and the second UE is determined based on the first auxiliary information and the second auxiliary information.

[0165] In some embodiments, step 340 may be implemented as step 340a or step 340b.

[0166] Step 340a: Receive second assistance information from the second UE.

[0167] In some embodiments, before executing step 340a, the network device sends a second signal to the second UE. The second signal is used to determine the second auxiliary information. The design of the second signal is the same as described above.

[0168] In some embodiments, the second UE sends the second assistance information periodically, or sends the second assistance information based on a semi-static configuration, or sends the second assistance information aperiodically.

[0169] In some embodiments, the network device sends the second signal periodically, or sends the second signal based on a semi-static configuration, or sends the second signal aperiodically.

[0170] Step 340b: Determine second auxiliary information based on the first signal sent by the second UE.

[0171] In some embodiments, the second assistance information is determined based on a measurement result of the first signal sent by the second UE.

[0172] The relevant contents of the first signal and the measurement result are the same as described above.

[0173] In some embodiments, the second UE sends the first signal periodically, or sends the first signal based on a semi-static configuration, or sends the first signal aperiodically.

[0174] Step 360: Obtain first CSI;

[0175] The first CSI is the CSI between the network device and the first UE. For details about the first CSI, please refer to step 220 and will not be described in detail here.

[0176] In some embodiments, the CSI includes at least one of the following: CQI, PMI, CRI, SSBRI, layer indicator, rank indicator, L1-RSRP.

[0177] In some embodiments, step 360 may be implemented as step 360a and / or step 360b.

[0178] Step 360a: Receive first CSI reported by the first UE;

[0179] In some embodiments, before executing step 360a, the network device sends a third signal to the first UE. The first UE determines a first CSI based on a measurement result of the third signal, and the first UE feeds the first CSI back to the network device.

[0180] In some embodiments, the third signal includes at least one of the following: a synchronization signal; a PRS; a TRS; a CSI-RS.

[0181] In some embodiments, the third signal is the same as the second signal. That is, the signal used by the first UE to determine the first CSI is the same as the signal used to determine the first auxiliary information.

[0182] In some embodiments, the third signal is different from the second signal. That is, the signal used by the first UE to determine the first CSI is different from the signal used to determine the first auxiliary information.

[0183] In some embodiments, the third signal is different from the second signal in at least one of the following aspects: transmission period, transmission beam, time domain resources, frequency domain resources, transmission interval, and signal type.

[0184] Regarding the different signal types of the third signal and the second signal, illustratively, the third signal is a CSI-RS, the second signal is not a CSI-RS, and the second signal is, for example, a synchronization signal, a PRS, or a TRS. Another illustrative example is that the third signal is a TRS, the second signal is not a TRS, and the second signal is, for example, a synchronization signal, a PRS, or a CSI-RS. The case where the third signal is a synchronization signal or a PRS is similar and is not further described here.

[0185] In some embodiments, the first UE sends the first CSI periodically, or sends the first CSI based on a semi-static configuration, or sends the first CSI aperiodically.

[0186] In some embodiments, the network device sends the third signal periodically, or sends the third signal based on a semi-static configuration, or sends the third signal aperiodically.

[0187] Step 360b: Determine the first CSI based on the fourth signal sent by the first UE.

[0188] In some embodiments, the first CSI is determined based on a measurement result of a fourth signal sent by the first UE.

[0189] In some embodiments, the fourth signal includes at least one of the following: DMRS; SRS.

[0190] In some embodiments, the fourth signal is the same as the first signal. That is, the signal used by the network device to determine the first CSI is the same as the signal used to determine the first auxiliary information.

[0191] In some embodiments, the fourth signal is different from the first signal. That is, the signal used by the network device to determine the first CSI is different from the signal used to determine the first auxiliary information.

[0192] In some embodiments, the fourth signal is different from the first signal in at least one of the following aspects: transmission period, transmission beam, time domain resources, frequency domain resources, transmission interval, and signal type.

[0193] In some embodiments, the first UE sends the fourth signal periodically, or sends the fourth signal based on a semi-static configuration, or sends the fourth signal aperiodically.

[0194] In some embodiments, the first CSI received by the network device in step 360a is different from the first CSI determined by the network device in step 360b. Exemplarily, the first CSI received by the network device in step 360a represents the channel quality or channel state of a downlink channel from the network device to the first UE; and the first CSI determined by the network device in step 360b represents the channel quality or channel state of an uplink channel from the first UE to the network device.

[0195] Step 380: Determine second CSI based on the first CSI, the first auxiliary information and the second auxiliary information.

[0196] In some embodiments, the second CSI is determined based on the first CSI and a channel correlation between the first channel and the second channel.

[0197] The channel correlation between the first channel and the second channel is determined based on the first auxiliary information and the second auxiliary information. The first channel includes a channel between the network device and the first UE, and the second channel includes a channel between the network device and the second UE.

[0198] In the embodiment of the present application, the first UE includes one or more UEs. Therefore, the first channel may refer to a channel (an uplink channel or a downlink channel) between a network device and a first UE, or may refer to two channels (including an uplink channel and a downlink channel) between the network device and a first UE, or may refer to multiple channels (including uplink channels and / or downlink channels) between the network device and multiple first UEs.

[0199] In some embodiments, the first UE may be implemented as the terminal device 120 and / or the terminal device 130 as shown in FIG. 1 .

[0200] In some embodiments, the first UE may be implemented as a low-power terminal, a zero-power terminal, an ultra-low-power terminal, a Passive IoT device, or an Ambient IoT / A-IoT device. In this case, the power consumption of the first UE is lower than that of the terminal device 120 and / or the terminal device 130 shown in FIG1 , thereby effectively saving the power consumption of the first UE during the process of the network device acquiring the first CSI and the first auxiliary information.

[0201] In some embodiments, the first UE may be implemented as a terminal including a low-power module based on the terminal device 120 and / or the terminal device 130 shown in FIG1 . The low-power module may be referred to as a zero-power module, an ultra-low-power module, a passive IoT module, or an ambient energy IoT module. In this case, the first UE may use the low-power module to perform operations related to the first CSI and the first auxiliary information, thereby effectively saving power consumption of the first UE during the process of the network device acquiring the first CSI and the first auxiliary information.

[0202] Optionally, the low-power terminal or low-power module includes at least one of the following: a main receiver, an auxiliary receiver, an energy collection module, a backscatter communication module, a logic processing module, a sensor module, and a memory. Optionally, the logic processing module includes a low-power computing module.

[0203] The channel correlation between the first channel and the second channel is used to indicate that the first channel is associated with the third channel.

[0204] In some embodiments, the first channel and the second channel have at least one of the following associations:

[0205] The sender of the first channel and the second channel is the same;

[0206] The receiver of the first channel and the second channel is the same;

[0207] There is a location correlation between the first UE and the second UE;

[0208] In the first time domain, a difference between the channel quality of the first channel and the channel quality of the second channel is less than a fourth threshold;

[0209] In the first time domain, the precoding parameters of the first channel are the same as the precoding parameters of the second channel.

[0210] In some embodiments, the channel correlation between the first channel and the second channel is determined based on a location correlation between the first UE and the second UE.

[0211] In some embodiments, the channel correlation between the first channel and the second channel in the second time domain range is determined based on the first CSI and the second CSI in the first time domain range, wherein the second time domain range is later than the first time domain range in time domain.

[0212] It can also be understood that the network device determines whether there is channel correlation between the first channel and the second channel in the future based on the past first CSI and the second CSI, that is, determines whether the future first CSI and the second CSI are correlated.

[0213] In some embodiments, the network device collects statistics of the first CSI and the second CSI within the first time domain range, and evaluates the correlation between the two in terms of precoding parameters, CSI values ​​(such as CQI values, PMI values, CRI values, SSBRI values, or L1-RSRP values, etc.). For example, the evaluation includes evaluating whether the precoding parameters of the two are the same, and the relationship between the precoding parameters and time changes. For another example, the evaluation includes evaluating whether the difference between the CSI values ​​of the two is less than a fourth threshold, and the relationship between the CSI values ​​and time changes.

[0214] In some embodiments, the network device determines that there is a correlation between the first CSI and the second CSI within the first time domain range, then determines that there is a channel correlation between the first channel and the second channel within the second time domain range, and / or determines that there is a correlation between the first CSI and the second CSI within the second time domain range.

[0215] In some embodiments, the second time domain range and the first time domain range are determined by a network device or agreed upon by a communication protocol.

[0216] In some embodiments, the second time domain range is adjacent to or not adjacent to the first time domain range, and the second time domain range and the first time domain range have the same or different durations.

[0217] Exemplarily, if the network device determines that a difference between the first CSI and the second CSI in period 1 is less than a fourth threshold, then it is determined that channel correlation exists between the first channel and the second channel in period 2, and / or that correlation exists between the first CSI and the second CSI in period 2. Period 2 is subsequent to period 1.

[0218] Exemplarily, if the network device determines that the precoding parameters of the first channel and the second channel are the same in period 1, it determines that channel correlation exists between the first channel and the second channel in period 2, and / or determines that correlation exists between the first CSI and the second CSI in period 2. Period 2 is after period 1.

[0219] Exemplarily, the network device determines the first CSI and the second CSI in time period 2 based on the changing relationship between the first CSI and time (such as a functional relationship, a positive correlation relationship, a negative correlation relationship, etc.) and the changing relationship between the second CSI and time in time period 1, and / or determines the correlation between the first CSI and the second CSI in time period 2, and / or determines the channel correlation between the first channel and the second channel in time period 2.

[0220] In the present application, the fourth threshold is determined by the network device, or agreed upon by the communication protocol, or determined by negotiation between the network device and the UE.

[0221] In some embodiments, the first CSI, the first auxiliary information, and the second auxiliary information are input into a first artificial intelligence (AI) model to obtain the second CSI.

[0222] In some embodiments, the first AI model is trained by a network device, or is trained by other devices (terminal devices or other network devices) and then sent to the network device, or is jointly trained by the network device and other devices.

[0223] In some embodiments, the CSI obtained through the AI ​​model can have higher accuracy. For example, the network device can further obtain CSI between the network device and the first UE through the AI ​​model, where the CSI is superior to the first CSI in step 360 in terms of precision and accuracy. Optionally, the first CSI represents the channel quality within a first time domain range, and the CSI obtained through the AI ​​model represents the channel quality within a second time domain range, where the second time domain range is later than the first time domain range in time domain.

[0224] In some embodiments, the network device is supported to obtain the second CSI corresponding to the second UE by inputting the first CSI, first auxiliary information, and second auxiliary information into the AI ​​model without measuring the reference signal from the second UE or without the second UE feeding back CSI, thereby saving the power consumption and resource overhead of the second UE transmitting the reference signal and the second UE feeding back CSI, reducing the overall resource overhead and device power consumption within the communication system, and improving the efficiency of obtaining CSI within the communication system.

[0225] In some embodiments, the network device determines the channel correlation between the first channel and the second channel within the second time domain range through an AI model.

[0226] In some embodiments, the network device inputs the first CSI and the second CSI within the first time domain into the AI ​​model, obtains the first CSI and the second CSI within the second time domain, and / or obtains the channel correlation between the first channel and the second channel within the second time domain.

[0227] In some embodiments, the AI ​​model includes a machine learning (ML) model.

[0228] In some embodiments, the network device sends a signal and / or data to the first UE based on the first CSI, wherein the signal includes one or more of system information, a control signal, a reference signal, and a synchronization signal.

[0229] In some embodiments, the network device sends a signal and / or data to the second UE based on the second CSI, wherein the signal includes one or more of system information, a control signal, a reference signal, and a synchronization signal.

[0230] In some embodiments, the network device sends a signal and / or data to a first UE based on the CSI output by the first AI model. In some embodiments, the network device sends a signal and / or data to a second UE based on the CSI output by the first AI model. In some embodiments, the network device sends a signal and / or data to a third UE based on the CSI output by the first AI model.

[0231] It should be noted that step 320, step 340, and step 360 are optional steps. The above steps can be used individually or in combination, for example: step 320 is implemented as an information acquisition method alone; or, step 340 is implemented as an information acquisition method alone; or, step 360 is implemented as an information acquisition method alone; or, step 320 and step 340 are combined to implement an information acquisition method; or, step 320 and step 360 are combined to implement an information acquisition method; or, step 340 and step 360 are combined to implement an information acquisition method; or, step 320, step 340, and step 360 are combined to implement an information acquisition method; or, step 320, step 340, step 360, and step 380 are combined to implement an information acquisition method. The above steps can be freely combined, for example, step 320 and step 360 are combined into one step; or, step 320 and step 340 are combined into one step. The execution order of the above steps can be adjusted according to actual conditions, for example, step 340 is executed before step 320; or, step 360 is executed before step 320; or, step 360 is executed before step 340.

[0232] In summary, the method provided in the embodiments of the present application enables a network device to obtain a second CSI using the first CSI and auxiliary information. This eliminates the need for the second UE to measure a reference signal or provide CSI feedback, and eliminates the need for the network device to transmit and measure a reference signal with the second UE to obtain the second CSI. This reduces power consumption of the network device and the second UE, as well as the resource overhead required to obtain the second CSI.

[0233] From the perspective of the communication system, the CSI corresponding to one part of UEs can be used to obtain the CSI corresponding to another part of UEs, which greatly improves the efficiency of obtaining the CSI corresponding to each UE in the communication system and saves the overall resource overhead and equipment power consumption in the communication system.

[0234] In addition, the introduction of AI models can further improve the accuracy, precision and efficiency of CSI acquisition, further improve the efficiency and flexibility of CSI acquisition within the communication system, and facilitate network equipment to obtain, update and maintain the CSI corresponding to each UE.

[0235] In addition, multiple methods for obtaining the first CSI and auxiliary information are provided, which greatly improves the flexibility of obtaining the first CSI and auxiliary information within the communication system. It supports network equipment to measure the signal sent by the UE to obtain the first CSI or auxiliary information, and also supports network equipment to directly receive the first CSI or auxiliary information reported by the UE. This improves the robustness of the channel state information acquisition method and is suitable for CSI acquisition in various communication scenarios.

[0236] In some embodiments, step 220 may be implemented as step 480. Optionally, in addition to step 480, the method for acquiring channel state information may further include one or more of steps 420, 440, and 460, as shown in FIG4 . FIG4 shows a flow chart of a method for acquiring channel state information provided by an exemplary embodiment of the present application, the method being executed by the network device shown in FIG1 or FIG2 , and the method comprising:

[0237] Step 420: Receive first CSI sent by the first UE;

[0238] The first CSI is the CSI between the network device and the first UE. For details about the first CSI, please refer to step 220 and will not be described in detail here.

[0239] In some embodiments, the CSI includes at least one of the following: CQI, PMI, CRI, SSBRI, layer indicator, rank indicator, L1-RSRP.

[0240] In some embodiments, before executing step 410, the network device sends a CSI-RS to the first UE. The first UE measures the CSI-RS sent by the network device to obtain a first CSI. The first UE feeds back the obtained first CSI to the network device.

[0241] In some embodiments, the network device further configures a CSI report to the first UE, where the CSI report includes one or more relevant parameters in terms of codebook, time domain resources, frequency domain resources, CSI measurement, and CSI reporting.

[0242] In some embodiments, the first UE measures the CSI-RS sent by the network device based on parameters configured by the network device in the CSI report, and reports the first CSI to the network device.

[0243] Step 440: Send a second signal to the first UE and / or send a second signal to the second UE;

[0244] For the relevant content of the second signal, please refer to step 320 and step 340, which will not be repeated here.

[0245] Step 460: Receive first auxiliary information reported by the first UE and / or second auxiliary information reported by the second UE;

[0246] For the relevant content of the first auxiliary information, please refer to step 320, and for the relevant content of the second auxiliary information, please refer to step 340, which will not be repeated here.

[0247] Exemplarily, the distance information between the first UE and the network device is obtained by the first UE measuring the second signal. For example, the first UE estimates the distance between itself and the network device by calculating the path loss. For another example, the first UE calculates the distance between itself and the network device by the time of arrival (TOA) or the time difference of arrival (TDOA). Among them, the method of obtaining distance information through TOA can be called TOA positioning technology, and the method of obtaining distance information through TDOA can be called TDOA positioning technology. It should be understood that other positioning methods that can obtain distance information are also applicable to this application and are not listed here one by one.

[0248] Similarly, the distance information between the second UE and the network device can also refer to the above content.

[0249] Exemplarily, the direction information of the first UE relative to the network device is obtained by the first UE measuring the second signal. For example, the first UE obtains its own direction relative to the network device through the Angle of Arrival (AOA) positioning technology. AOA positioning technology is a positioning method based on the angle of arrival of the signal. The transmitting end uses a single antenna to transmit a direction-finding signal, and the device of the receiving end has a built-in antenna array. When the signal passes through, a phase difference will be generated due to the different distances received in the antenna array. The receiving end can calculate the relative signal direction based on this phase difference. It should be understood that other positioning methods that can obtain direction information are also applicable to this application and are not listed here one by one.

[0250] Similarly, the direction information of the second UE relative to the network device can also refer to the above content.

[0251] Exemplarily, the beam information corresponding to the first UE is obtained by the first UE measuring the second signal. For example, the first UE determines a downlink signal with high reception quality among the received or detected downlink signals, and feeds back one or more of the following to the network device: the beam direction corresponding to the downlink signal, the beam index corresponding to the downlink signal, and the signal index corresponding to the downlink signal. The network device can directly receive the beam information fed back by the first UE, or determine the beam information based on the information fed back by the first UE.

[0252] Similarly, the beam information corresponding to the second UE can also refer to the above content.

[0253] For example, the absolute location information of the first UE can be obtained by the first UE through a positioning system such as the Beidou system or the Global Positioning System (GPS), and fed back to the network device.

[0254] Exemplarily, the relative position information of the first UE can be represented by an area number within the cell. For example, the network device determines the relative position of each UE within the cell based on the detection results of each UE on the downlink signal by sending downlink signals with different powers and / or different signal formats and / or different beam directions. For example, the network device receives uplink signals with different powers and / or different signal formats and / or different beam directions, and determines the relative position of each UE within the cell based on the detection results of each uplink signal.

[0255] Similarly, the location information corresponding to the second UE can also refer to the above content.

[0256] As shown in Figure 5, the network device 501 defines several areas Z(x,y) in the cell by scanning downlink signals of different powers and / or different signal formats and / or different beam directions. Among them, x belongs to [1,4], 1 to 4 represents the transmission power from low to high, or 1 to 4 represents different signal formats. y belongs to [1,8], 1 to 8 represents different transmission directions. The network device scans various locations in the cell using downlink signals of different powers and / or different signal formats and / or different beam directions. The UE that receives the downlink signal feeds back the measurement result or auxiliary information of the downlink signal. The network device determines the area to which the UE belongs based on the measurement result or auxiliary information of the downlink signal. For example, the network device scans by transmitting downlink signals in eight directions in ascending order of transmit power. When the transmit power corresponds to x = 2 and the transmit direction corresponds to y = 4, UE 502 is able to receive the downlink signal. UE 502 measures the downlink signal and feeds back the measurement result or auxiliary information to network device 501. Based on the transmit direction and transmit power of the downlink signal, and the information fed back by UE 502, network device 501 determines that UE 502 is located in area Z(2, 4). When the transmit power corresponds to x = 3 and the transmit direction corresponds to y = 7, UE 503 is able to receive the downlink signal. UE 503 measures the downlink signal and feeds back the measurement result or auxiliary information to network device 501. Based on the transmit direction and transmit power of the downlink signal, and the information fed back by UE 503, network device 501 determines that UE 503 is located in area Z(3, 7).

[0257] Exemplarily, the location correlation between the first UE and the third UE can be obtained by the first UE through side communication between itself and the third UE. The first UE obtains the location correlation between itself and the third UE and reports the location correlation to the network device. For example, the distance between the first UE and the third UE is less than the first threshold, and the first UE reports the location correlation between itself and the third UE to the network device, or the first UE reports the distance between itself and the third UE is less than the first threshold to the network device. Optionally, the third UE may also report the location correlation between itself and the first UE to the network device, or the third UE reports the distance between itself and the first UE is less than the first threshold to the network device.

[0258] Similarly, the location correlation between the first UE and the second UE can also refer to the above content.

[0259] Step 480: Determine second CSI based on the first CSI, the first auxiliary information and the second auxiliary information.

[0260] In some embodiments, the network device may obtain a channel correlation between the first channel and the second channel based on the received first auxiliary information and the second auxiliary information. For example, the network device may estimate that the first auxiliary information and the second auxiliary information have a quasi-colocation (QCL) characteristic based on the first auxiliary information and the second auxiliary information.

[0261] For the relevant content of step 480 , please refer to step 380 .

[0262] In some embodiments, a network device determines a first UE that is location-correlated with a second UE based on first assistance information received from multiple first UEs and second assistance information received from a second UE. Since the CSI between the two location-correlated UEs is similar, the second CSI of the second UE can be determined based on the first CSI of the first UE that is location-correlated with the second UE.

[0263] In some embodiments, the first CSI, the first auxiliary information, and the second auxiliary information are input into a first AI model to obtain the second CSI.

[0264] In some embodiments, the first AI model is trained by a network device, or is trained by other devices (terminal devices or other network devices) and then sent to the network device, or is jointly trained by the network device and other devices.

[0265] By applying AI models or ML models, the overhead caused by CSI feedback can be reduced and the accuracy of channel state information can be improved, thereby improving the performance of the communication system, reducing complexity, and saving power consumption and resource overhead.

[0266] In some embodiments, the network device performs data analysis and model training using an AI / ML algorithm based on the first CSI and the first auxiliary information to obtain the CSI of the wireless channels reaching the network device from different locations within the cell. Combined with the second auxiliary information, the AI / ML algorithm can determine the CSI of the wireless channel between the second UE and the network device.

[0267] In some embodiments, through multiple iterations of CSI information within a cell, the network device can obtain more accurate CSI information through AI / ML algorithms. In this way, the network device can maintain a database of CSI information within a cell, which includes CSI information between different locations and network devices, and continuously updates and iterates through the obtained CSI feedback and auxiliary information. When it is necessary to determine the CSI information of a second UE located at a certain location, or the CSI information of a second UE associated with a first UE, the network device can directly obtain the CSI information of the second UE through the database of the CSI information, without the need to transmit a reference signal or CSI feedback to the second UE for the latest CSI feedback.

[0268] Exemplarily, as shown in FIG6 , the network device 501 obtains the first CSI and the first auxiliary information fed back by multiple first UEs in the cell. The network device 501 estimates the channel correlation or position correlation between UE1, UE2 and UE3 through the auxiliary information fed back by UE1 and UE2. Based on the channel correlation or position correlation, combined with the CSI information fed back by UE1 and UE2, the network device can determine the CSI information of UE3. The CSI information of UE3 can be the same as the CSI information fed back by UE1 or UE2, or the CSI information of UE3 is calculated based on the CSI information fed back by UE1 or UE2. For example, the CSI information of UE3 is the average result of the CSI information of UE1 and the CSI information of UE2, or the CSI information of UE3 is the worst value between the CSI information of UE1 and the CSI information of UE2, or the CSI information of UE3 is the optimal value between the CSI information of UE1 and the CSI information of UE2.

[0269] Furthermore, the network device may also obtain the latest CSI information of UE3 in combination with the CSI information previously fed back by UE3.

[0270] It should be noted that step 420, step 440, and step 460 are optional steps. The above steps can be used individually or in combination, for example: step 420 is implemented as an information acquisition method alone; or, step 440 is implemented as a signal sending method alone; or, step 460 is implemented as an information acquisition method alone; or, step 420 and step 460 are combined to implement an information acquisition method; or, step 420, step 440, and step 460 are combined to implement an information acquisition method; or, step 420, step 440, step 460, and step 480 are combined to implement an information acquisition method. The above steps can be freely combined, for example, step 420 and step 460 are combined into one step. The execution order of the above steps can be adjusted according to actual conditions, for example, step 440 is executed before step 420; or, step 460 is executed before step 420.

[0271] In summary, the method provided in the embodiment of the present application supports the network device to obtain the second CSI through the first CSI and auxiliary information. There is no need for the second UE to measure the reference signal or perform CSI feedback, nor is there a need for the network device to transmit and measure the reference signal between the second UE to obtain the second CSI, which saves the power consumption of the network device and the second UE, and reduces the total CSI feedback amount and the total reference signal feedback amount in the communication system. From the perspective of the communication system, the CSI corresponding to one part of the UE can be used to obtain the CSI corresponding to another part of the UE, which greatly improves the efficiency of obtaining the CSI corresponding to each UE in the communication system and saves the overall resource overhead and equipment power consumption in the communication system. In addition, the introduction of the AI ​​model can further improve the acquisition precision, accuracy and efficiency of the CSI, further improve the efficiency and flexibility of obtaining CSI in the communication system, and facilitate network equipment to obtain, update and maintain the CSI corresponding to each UE.

[0272] In some embodiments, step 220 may be implemented as step 760. Optionally, in addition to step 760, the method for acquiring channel state information may further include one or more of steps 720 and 740, as shown in FIG7 . FIG7 shows a flow chart of a method for acquiring channel state information provided by an exemplary embodiment of the present application, the method being executed by the network device shown in FIG1 or FIG2 , and the method comprising:

[0273] Step 720: Receive first CSI sent by the first UE;

[0274] For related content, please refer to step 420, which will not be repeated here.

[0275] Step 740: Determine first auxiliary information based on the first signal sent by the first UE, and / or determine second auxiliary information based on the first signal sent by the second UE;

[0276] In some embodiments, the network device measures the first signal sent by the first UE, and determines the first auxiliary information based on the measurement result.

[0277] In some embodiments, the network device measures the first signal sent by the second UE, and determines the second auxiliary information based on the measurement result.

[0278] Exemplarily, the distance information between the first UE and the network device is obtained by the network device measuring the first signal. For example, the network device determines based on the measurement result of the first signal (such as RSRP value, RSSI value, RSRQ value, SINR value, etc.). It should be understood that other methods for obtaining distance information (such as TOA positioning technology, TDOA positioning technology, etc.) are also applicable to this application and are not listed here.

[0279] Similarly, the distance information between the second UE and the network device can also refer to the above content.

[0280] Exemplarily, the direction information of the first UE relative to the network device is obtained by the network device measuring the first signal. For example, the network device obtains the direction of the first UE relative to the network device using AOA positioning technology. It should be understood that other positioning methods that can obtain direction information are also applicable to the present application and are not listed here.

[0281] Similarly, the direction information of the second UE relative to the network device can also refer to the above content.

[0282] Exemplarily, the beam information corresponding to the first UE is obtained by the network device based on the index of the first signal, or obtained from the indication information carried by the first signal.

[0283] Similarly, the beam information corresponding to the second UE can also refer to the above content.

[0284] Exemplarily, the absolute position information corresponding to the first UE can be obtained by the first UE through a positioning system, such as its own coordinates or longitude and latitude, and fed back to the network device.

[0285] Exemplarily, the relative position information of the first UE can be represented by an area number within the cell. For example, the network device determines the relative position of each UE within the cell based on the detection results of each UE on the downlink signal by sending downlink signals with different powers and / or different signal formats and / or different beam directions. For example, the network device receives uplink signals with different powers and / or different signal formats and / or different beam directions, and determines the relative position of each UE within the cell based on the detection results of each uplink signal.

[0286] Similarly, the location information corresponding to the second UE can also refer to the above content.

[0287] Exemplarily, the location correlation between the first UE and the second UE can be determined by the first auxiliary information and the second auxiliary information. For example, if the first auxiliary information and the second auxiliary information indicate that the distance between the first UE and the second UE is less than a first threshold, the network device determines that there is location correlation between the first UE and the second UE.

[0288] Step 760: Determine second CSI based on the first CSI, the first auxiliary information and the second auxiliary information.

[0289] For related content, please refer to step 380 or step 480, which will not be repeated here.

[0290] It should be noted that step 720 and step 740 are optional steps. The above steps can be used individually or in combination, for example: step 720 is implemented as an information acquisition method alone; or, step 740 is implemented as an information acquisition method alone; or, step 720 and step 760 are combined to implement an information acquisition method; or, step 720 and step 740 are combined to implement an information acquisition method; or, step 720, step 740 and step 760 are combined to implement an information acquisition method. The above steps can be freely combined, for example, step 720 and step 740 are combined into one step. The execution order of the above steps can be adjusted according to actual conditions, for example, step 740 is executed before step 720.

[0291] In summary, the method provided in the embodiment of the present application supports the network device to obtain the second CSI through the first CSI and auxiliary information. There is no need for the second UE to measure the reference signal or perform CSI feedback, nor is there a need for the network device to transmit and measure the reference signal between the second UE to obtain the second CSI, which saves the power consumption of the network device and the second UE, and reduces the total CSI feedback amount and the total reference signal feedback amount in the communication system. From the perspective of the communication system, the CSI corresponding to one part of the UE can be used to obtain the CSI corresponding to another part of the UE, which greatly improves the efficiency of obtaining the CSI corresponding to each UE in the communication system and saves the overall resource overhead and equipment power consumption in the communication system. In addition, the introduction of the AI ​​model can further improve the acquisition precision, accuracy and efficiency of the CSI, further improve the efficiency and flexibility of obtaining CSI in the communication system, and facilitate network equipment to obtain, update and maintain the CSI corresponding to each UE.

[0292] FIG8 is a flow chart of a method for acquiring channel state information provided by an exemplary embodiment of the present application. The method is executed by a first terminal device, which may be implemented as the terminal device shown in FIG1 . The method includes:

[0293] Step 820: Send the first CSI to the network device;

[0294] The first CSI is the CSI between the network device and the first UE.

[0295] In some embodiments, the first CSI is the CSI of the downlink channel between the network device and the first UE, that is, the first CSI can reflect the channel quality or channel state change of the downlink channel from the network device to the first UE. The second CSI is the CSI of the downlink channel between the network device and the second UE, that is, the second CSI can reflect the channel quality or channel state change of the downlink channel from the network device to the second UE.

[0296] In some embodiments, the first CSI is the CSI of the uplink channel between the network device and the first UE, that is, the first CSI can reflect the channel quality or channel state change of the uplink channel from the first UE to the network device. The second CSI is the CSI of the uplink channel between the network device and the second UE, that is, the second CSI can reflect the channel quality or channel state change of the uplink channel from the second UE to the network device.

[0297] In some embodiments, the first CSI is the CSI of a downlink channel between the network device and the first UE, and the second CSI is the CSI of an uplink channel between the network device and the second UE.

[0298] In some embodiments, the first CSI is the CSI of an uplink channel between the network device and the first UE, and the second CSI is the CSI of a downlink channel between the network device and the second UE.

[0299] Step 840: Send first auxiliary information or a first signal to the network device.

[0300] The first signal is used to determine first auxiliary information. The first auxiliary information includes information corresponding to the first UE and used to determine second CSI. The second CSI is CSI between the network device and the second UE.

[0301] In some embodiments, the CSI includes at least one of the following: CQI, PMI, CRI, SSBRI, layer indicator, rank indicator, L1-RSRP.

[0302] In some embodiments, the first UE can be implemented as a low-power terminal, or a zero-power terminal, or an ultra-low-power terminal, or a passive Internet of Things device, or an A-IoT device.

[0303] In some embodiments, the first UE includes a low power consumption module, or a zero power consumption module, or an ultra-low power consumption module, or a passive Internet of Things module, or an A-IoT module.

[0304] The design of the low-power terminal or the low-power module facilitates reducing power consumption and complexity when the first UE performs operations related to the first CSI and the first auxiliary information.

[0305] In some embodiments, before sending the first auxiliary information to the network device, the first UE receives a second signal from the network device, where the second signal is used to determine the first auxiliary information.

[0306] For the contents related to the first auxiliary information, the second signal, and the first signal, please refer to step 320 and will not be repeated here.

[0307] It should be noted that step 820 and step 840 can be combined into one step. The execution order of step 820 and step 840 can be adjusted according to actual conditions, for example, step 840 can be executed before step 820.

[0308] In summary, in the method provided in the embodiment of the present application, the first CSI and the first auxiliary information, or the first CSI and the first signal, sent by the first terminal device are used to determine the second CSI. This allows the network device to obtain the second CSI without the need for reference signal measurement or CSI feedback with the second terminal device, effectively reducing the power consumption and resource overhead required for the communication device to measure the reference signal or feedback CSI information. In addition, there is no need to use a vector quantization or codebook-based method to reduce the air interface resources required for CSI feedback, thereby avoiding the loss of channel information between the network device and the second UE.

[0309] FIG9 is a flow chart of a method for acquiring channel state information provided by an exemplary embodiment of the present application. The method is executed by a second terminal device, which may be implemented as the terminal device shown in FIG1 . The method includes:

[0310] Step 920: Send the second auxiliary information or the first signal to the network device.

[0311] The first signal is used to determine the second auxiliary information. The second auxiliary information includes information corresponding to the second UE and used to determine the second CSI. The second CSI is the CSI between the network device and the second UE.

[0312] In some embodiments, the CSI includes at least one of the following: CQI, PMI, CRI, SSBRI, layer indicator, rank indicator, L1-RSRP.

[0313] In some embodiments, before sending the second auxiliary information to the network device, the second UE receives a second signal from the network device, where the second signal is used to determine the second auxiliary information.

[0314] For details about the second auxiliary information, the second signal, and the first signal, please refer to step 340 and will not be described in detail here.

[0315] In summary, in the method provided in the embodiments of the present application, the second auxiliary information sent by the second terminal device is used to determine the second CSI. This allows the network device to obtain the second CSI without having to provide CSI feedback to the second terminal device, effectively reducing the power consumption and resource overhead required by the communication device to measure the reference signal or provide CSI feedback. Furthermore, there is no need to use vector quantization or codebook-based methods to reduce the air interface resources required for CSI feedback, thus avoiding the loss of channel information between the network device and the second terminal device.

[0316] FIG10 is a flow chart of a method for acquiring channel state information provided by an exemplary embodiment of the present application, the method being performed by a network device, a first terminal device, and a second terminal device. The network device may be implemented as the network device shown in FIG1 , FIG2 , FIG3 , FIG4 , or FIG7 , the first terminal device may be implemented as the terminal device shown in FIG1 , FIG8 , and the second terminal device may be implemented as the terminal device shown in FIG1 , FIG9 . The method includes:

[0317] Step 1001: A first UE sends first CSI and first auxiliary information to a network device;

[0318] For relevant content of the first CSI, please refer to step 360, step 420, step 720, or step 820; for relevant content of the first auxiliary information, please refer to step 320, step 460, step 740, or step 840, which will not be repeated here.

[0319] Step 1002: The network device sends a second signal to the second UE;

[0320] For the relevant content of the second signal, please refer to step 340 or step 440 or step 720 or step 820, which will not be repeated here.

[0321] Step 1003: The network device receives second auxiliary information sent by the second UE;

[0322] For the relevant content of the second auxiliary information, please refer to step 340 or step 460 or step 740 or step 920, which will not be repeated here.

[0323] Step 1004: The network device determines the second CSI based on the first CSI, the first auxiliary information and the second auxiliary information.

[0324] For related content, please refer to step 380, step 480 or step 760, which will not be repeated here.

[0325] In summary, the method provided in the embodiment of the present application can obtain the second CSI through the first CSI, the first auxiliary information and the second auxiliary information, effectively reducing the power consumption and resource overhead required for the communication device to measure the reference signal or feedback CSI information. In addition, there is no need to use a vector quantization or codebook-based method to reduce the air interface resources required for CSI feedback, thereby avoiding the loss of channel information between the network device and the second UE. In addition, the efficiency of obtaining the CSI corresponding to each UE in the communication system is greatly improved, saving the overall resource overhead and equipment power consumption in the communication system. In addition, the introduction of the AI ​​model can further improve the acquisition precision, accuracy and efficiency of CSI, further improve the efficiency and flexibility of obtaining CSI in the communication system, and facilitate network equipment to obtain, update and maintain the CSI corresponding to each UE.

[0326] FIG11 shows a block diagram of a device for acquiring channel state information according to an exemplary embodiment of the present application. The device can be implemented as a network device as shown in FIG1 , FIG2 , FIG3 , FIG4 , or FIG7 , or as a portion of a network device as shown in FIG1 , FIG2 , FIG3 , FIG4 , or FIG7 . The device includes a processing module 1110. Optionally, the device also includes a receiving module 1130 and / or a sending module 1150.

[0327] The processing module 1110 determines a second CSI based on the first CSI and the auxiliary information;

[0328] The first CSI is the CSI between the present apparatus and a first terminal device, the second CSI is the CSI between the present apparatus and a second terminal device, and the auxiliary information includes information corresponding to the terminal device for determining the second CSI.

[0329] In some embodiments, the auxiliary information includes first auxiliary information corresponding to the first terminal device and / or second auxiliary information corresponding to the second terminal device.

[0330] In some embodiments, the apparatus further includes: a receiving module 1130, configured to receive the first auxiliary information from the first terminal device.

[0331] In some embodiments, the processing module 1110 is further configured to determine the first auxiliary information based on a first signal sent by the first terminal device.

[0332] In some embodiments, the apparatus further includes: a sending module 1150, configured to send a second signal to the first terminal device, where the second signal is used to determine the first auxiliary information.

[0333] In some embodiments, the receiving module 1130 is further configured to receive the second auxiliary information from the second terminal device.

[0334] In some embodiments, the processing module 1110 is further configured to determine the second auxiliary information based on the first signal sent by the second terminal device.

[0335] In some embodiments, the sending module 1150 is further used to send a second signal to the second terminal device, where the second signal is used to determine the second auxiliary information.

[0336] In some embodiments, the second signal comprises at least one of: a synchronization signal; a PRS; a TRS; a CSI-RS.

[0337] In some embodiments, the processing module 1110 is further configured to determine the first auxiliary information based on a measurement result of the first signal.

[0338] In some embodiments, the processing module 1110 is further configured to determine the second auxiliary information based on a measurement result of the first signal.

[0339] In some embodiments, the first signal includes at least one of the following: DMRS; SRS.

[0340] In some embodiments, the first auxiliary information includes at least one of the following information: location information of the first terminal device; distance information between the first terminal device and the present apparatus; direction information of the first terminal device relative to the present apparatus; beam information corresponding to the first terminal device; and location correlation between the first terminal device and a third terminal device, wherein the third terminal device includes a terminal device other than the first terminal device.

[0341] In some embodiments, the second auxiliary information includes at least one of the following information: location information of the second terminal device; distance information between the second terminal device and the present apparatus; direction information of the second terminal device relative to the present apparatus; beam information corresponding to the second terminal device; and location correlation between the second terminal device and the first terminal device.

[0342] In some embodiments, the processing module 1110 is further configured to determine the second CSI based on a channel correlation between the first channel and the second channel and the first CSI;

[0343] The channel correlation between the first channel and the second channel is determined based on the first auxiliary information and the second auxiliary information, the first channel includes the channel between the present apparatus and the first terminal device, and the second channel includes the channel between the present apparatus and the second terminal device.

[0344] In some embodiments, the channel correlation between the first channel and the second channel is determined based on a location correlation between the first terminal device and the second terminal device.

[0345] In some embodiments, the processing module 1110 is further configured to determine that there is a location correlation between the first terminal device and the second terminal device when the distance between the second terminal device and the first terminal device is less than a first threshold;

[0346] The distance between the second terminal device and the first terminal device is determined based on the first auxiliary information and the second auxiliary information.

[0347] In some embodiments, the processing module 1110 is further configured to input the first CSI, the first auxiliary information, and the second auxiliary information into a first AI model to obtain the second CSI.

[0348] In some embodiments, the first terminal device includes a low power consumption device and / or a low power consumption module.

[0349] In summary, the device provided in the embodiment of the present application supports obtaining the second CSI through the first CSI, the first auxiliary information and the second auxiliary information, effectively reducing the power consumption and resource overhead required for the communication device to measure the reference signal or feedback CSI information. In addition, there is no need to use a vector quantization or codebook-based method to reduce the air interface resources required for CSI feedback, thereby avoiding the loss of channel information between the device and the second UE. In addition, the efficiency of obtaining the CSI corresponding to each UE in the communication system is greatly improved, saving the overall resource overhead and equipment power consumption in the communication system. In addition, the introduction of the AI ​​model can further improve the acquisition precision, accuracy and efficiency of CSI, further improve the efficiency and flexibility of obtaining CSI in the communication system, and facilitate network equipment to obtain, update and maintain the CSI corresponding to each UE.

[0350] FIG12 shows a block diagram of a device for acquiring channel state information according to an exemplary embodiment of the present application. The device can be implemented as a terminal device as shown in FIG1 or FIG8 , or as a portion of a terminal device as shown in FIG1 or FIG8 . The device includes a sending module 1210 . Optionally, the device also includes a receiving module 1230 and / or a processing module 1250 .

[0351] A sending module 1210 is configured to send a first CSI to a network device;

[0352] The sending module 1210 is further configured to send first auxiliary information or a first signal to the network device;

[0353] Among them, the first CSI is the CSI between the network device and this device, the first signal is used to determine the first auxiliary information, the first auxiliary information includes information corresponding to this device for determining the second CSI, and the second CSI is the CSI between the network device and the second terminal device.

[0354] In some embodiments, the apparatus further includes: a receiving module 1230, configured to receive a second signal from the network device, where the second signal is used to determine the first auxiliary information.

[0355] In some embodiments, the second signal comprises at least one of: a synchronization signal; a PRS; a TRS; a CSI-RS.

[0356] In some embodiments, the first signal includes at least one of the following: DMRS; SRS.

[0357] In some embodiments, the first auxiliary information includes at least one of the following information: location information of the present apparatus; distance information between the present apparatus and the network device; direction information of the present apparatus relative to the network device; beam information corresponding to the present apparatus; and association information between the location of the present apparatus and the location of a third terminal device, wherein the third terminal device is a terminal device other than the present apparatus within the signal range of the network device.

[0358] In some embodiments, the apparatus includes a low-power device and / or a low-power module.

[0359] In some embodiments, the apparatus further comprises: a processing module 1250 configured to determine the first auxiliary information based on the second signal.

[0360] In some embodiments, the processing module 1250 is further configured to determine the first CSI.

[0361] In summary, the apparatus provided in the embodiment of the present application transmits the first CSI and the first auxiliary information, or the first CSI and the first signal, for determining the second CSI. This allows the network device to obtain the second CSI without having to perform reference signal measurement or CSI feedback with the second terminal device, effectively reducing the power consumption and resource overhead required for the communication device to measure the reference signal or feedback CSI information. Furthermore, there is no need to use vector quantization or codebook-based methods to reduce the air interface resources required for CSI feedback, thereby avoiding the loss of channel information between the network device and the second UE.

[0362] FIG13 shows a block diagram of a device for acquiring channel state information according to an exemplary embodiment of the present application. The device can be implemented as a terminal device as shown in FIG1 or FIG9 , or as a portion of a terminal device as shown in FIG1 or FIG9 . The device includes a sending module 1310 . Optionally, the device also includes a receiving module 1330 and / or a processing module 1350 .

[0363] The sending module 1310 is configured to send the second auxiliary information or the first signal to the network device;

[0364] The first signal is used to determine the second auxiliary information, the second auxiliary information includes information corresponding to the current device and used to determine the second CSI, and the second CSI is the CSI between the network device and the current device.

[0365] In some embodiments, the apparatus further includes: a receiving module 1330, configured to receive a second signal from the network device, where the second signal is used to determine the second auxiliary information.

[0366] In some embodiments, the second signal comprises at least one of: a synchronization signal; a PRS; a TRS; a CSI-RS.

[0367] In some embodiments, the first signal includes at least one of the following: DMRS; SRS.

[0368] In some embodiments, the second auxiliary information includes at least one of the following information: location information of the device; distance information between the device and the network device; direction information of the device relative to the network device; beam information corresponding to the device; and association information between the location of the device and the location of the first terminal device.

[0369] In some embodiments, the first terminal device includes a low power consumption device and / or a low power consumption module.

[0370] In some embodiments, the apparatus further comprises: a processing module 1350 configured to determine the second auxiliary information based on the second signal.

[0371] In summary, the apparatus provided in the embodiments of the present application transmits second auxiliary information for determining the second CSI. This allows the network device to obtain the second CSI without having to provide CSI feedback to the apparatus, effectively reducing the power consumption and resource overhead required by the communication device to measure reference signals or provide CSI feedback. Furthermore, there is no need to use vector quantization or codebook-based methods to reduce the air interface resources required for CSI feedback, thus avoiding the loss of channel information between the network device and the apparatus.

[0372] Figure 14 shows a schematic structural diagram of a communication device 1400 provided by an exemplary embodiment of the present application, including a processor 1401, a receiver 1402, a transmitter 1403, a memory 1404, and a bus 1405. The communication device 1400 may be used to execute at least some of the steps executed by the network device shown in Figure 1, Figure 2, Figure 3, Figure 4, or Figure 7, or may be used to execute at least some of the steps executed by the first terminal device shown in Figure 1 or Figure 8, or may be used to execute at least some of the steps executed by the second terminal device shown in Figure 1 or Figure 9.

[0373] Processor 1401 includes one or more processing cores. Processor 1401 executes various functional applications and information processing by running software programs and modules. In some embodiments, processor 1401 can be used to implement the functions and steps of processing module 1110 and / or processing module 1250 and / or processing module 1350 described above.

[0374] Receiver 1402 and transmitter 1403 can be implemented as a communication component, which can be a communication chip and is referred to as a transceiver. In some embodiments, receiver 1402 can be used to implement the functions and steps of receiving module 1130, receiving module 1230, and / or receiving module 1330 described above, and transmitter 1403 can be used to implement the functions and steps of transmitting module 1150, transmitting module 1210, and / or transmitting module 1310 described above. In some embodiments, receiver 1402 includes a backscatter transmitter.

[0375] The memory 1404 is connected to the processor 1401 via a bus 1405 .

[0376] The memory 1404 may be used to store at least one instruction, and the processor 1401 may be used to execute the at least one instruction to implement each step in the above method embodiment.

[0377] In addition, the memory 1404 can be implemented by any type of volatile or non-volatile storage device or a combination thereof. Volatile or non-volatile storage devices include but are not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, and programmable read-only memory (PROM).

[0378] In some embodiments, the receiver 1402 receives signals / data independently, or the processor 1401 controls the receiver 1402 to receive signals / data, or the processor 1401 requests the receiver 1402 to receive signals / data, or the processor 1401 cooperates with the receiver 1402 to receive signals / data.

[0379] In some embodiments, the transmitter 1403 independently sends signals / data, or the processor 1401 controls the transmitter 1403 to send signals / data, or the processor 1401 requests the transmitter 1403 to send signals / data, or the processor 1401 cooperates with the transmitter 1403 to send signals / data.

[0380] In an exemplary embodiment of the present application, a computer-readable storage medium is also provided, in which at least one program is stored. The at least one program is loaded and executed by the processor to implement the channel state information acquisition method provided by the above-mentioned various method embodiments.

[0381] In an exemplary embodiment of the present application, a chip is also provided, which includes a programmable logic circuit and / or program instructions. When the chip runs on a communication device, it is used to implement the channel state information acquisition method provided by the above-mentioned various method embodiments.

[0382] In an exemplary embodiment of the present application, a computer program product is further provided. When the computer program product is executed on a processor of a computer device, the computer device executes the above-mentioned method for acquiring channel state information.

[0383] In an exemplary embodiment of the present application, a computer program is further provided. The computer program includes computer instructions. A processor of a computer device executes the computer instructions, so that the computer device executes the above-mentioned channel state information acquisition method.

[0384] Those skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or may be accomplished by a program instructing the relevant hardware, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk, or an optical disk, etc.

[0385] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A method for acquiring channel state information, characterized in that: The method is performed by a network device, and the method includes: Determine second CSI based on the first channel state information CSI and the auxiliary information; The first CSI is the CSI between the network device and the first terminal device, the second CSI is the CSI between the network device and the second terminal device, and the auxiliary information includes information corresponding to the terminal device for determining the second CSI.

2. The method according to claim 1, characterized in that The auxiliary information includes first auxiliary information corresponding to the first terminal device and / or second auxiliary information corresponding to the second terminal device.

3. The method according to claim 2, characterized in that Before determining the second CSI based on the first channel state information CSI and the auxiliary information, the method further includes: receiving the first auxiliary information from the first terminal device; or, The first auxiliary information is determined based on a first signal sent by the first terminal device.

4. The method according to claim 3, characterized in that Before receiving the first auxiliary information from the first terminal device, the method further includes: A second signal is sent to the first terminal device, where the second signal is used to determine the first auxiliary information.

5. The method according to any one of claims 2 to 4, characterized in that: Before determining the second CSI based on the first channel state information CSI and the auxiliary information, the method further includes: receiving the second auxiliary information from the second terminal device; or, The second auxiliary information is determined based on a first signal sent by the second terminal device.

6. The method according to claim 5, characterized in that Before receiving the second auxiliary information from the second terminal device, the method further includes: A second signal is sent to the second terminal device, where the second signal is used to determine the second auxiliary information.

7. The method according to claim 4 or 6, characterized in that: The second signal includes at least one of the following: Synchronous signal; Positioning reference signal PRS; Tracking reference signal TRS; Channel State Information Reference Signal CSI-RS.

8. The method according to claim 3, characterized in that The determining the first auxiliary information based on the first signal sent by the first terminal device includes: The first auxiliary information is determined based on a measurement result of the first signal.

9. The method according to claim 5, characterized in that The determining the second auxiliary information based on the first signal sent by the second terminal device includes: The second auxiliary information is determined based on a measurement result of the first signal.

10. The method according to claim 3 or 5 or 8 or 9, characterized in that: The first signal includes at least one of the following: Demodulation reference signal DMRS; Sounding Reference Signal SRS.

11. The method according to claim 2 or 3 or 4 or 8, characterized in that: The first auxiliary information includes at least one of the following information: location information of the first terminal device; distance information between the first terminal device and the network device; Direction information of the first terminal device relative to the network device; beam information corresponding to the first terminal device; The location correlation between the first terminal device and a third terminal device, wherein the third terminal device includes a terminal device other than the first terminal device.

12. The method according to claim 2 or 5 or 6 or 9, characterized in that: The second auxiliary information includes at least one of the following information: location information of the second terminal device; distance information between the second terminal device and the network device; Direction information of the second terminal device relative to the network device; beam information corresponding to the second terminal device; The location correlation between the second terminal device and the first terminal device.

13. The method according to any one of claims 2 to 12, characterized in that: The determining the second CSI based on the first CSI and the auxiliary information includes: Determine the second CSI based on a channel correlation between the first channel and the second channel and the first CSI; The channel correlation between the first channel and the second channel is determined based on the first auxiliary information and the second auxiliary information, the first channel includes the channel between the network device and the first terminal device, and the second channel includes the channel between the network device and the second terminal device.

14. The method according to claim 13, characterized in that The channel correlation between the first channel and the second channel is determined based on the position correlation between the first terminal device and the second terminal device.

15. The method according to claim 14, characterized in that Before determining the second CSI based on the channel correlation between the first channel and the second channel and the first CSI, the method further includes: When the distance between the second terminal device and the first terminal device is less than a first threshold, determining that there is a location correlation between the first terminal device and the second terminal device; The distance between the second terminal device and the first terminal device is determined based on the first auxiliary information and the second auxiliary information.

16. The method according to any one of claims 2 to 15, characterized in that: The determining the second CSI based on the first CSI and the auxiliary information includes: The first CSI, the first auxiliary information, and the second auxiliary information are input into a first AI model to obtain the second CSI.

17. The method according to any one of claims 1 to 16, characterized in that: The first terminal device includes a low power consumption device and / or a low power consumption module.

18. A method for acquiring channel state information, characterized in that: The method is performed by a first terminal device, and the method includes: Sending first channel state information CSI to the network device; Sending first auxiliary information or a first signal to the network device; The first CSI is the CSI between the network device and the first terminal device, the first signal is used to determine the first auxiliary information, the first auxiliary information includes information corresponding to the first terminal device for determining the second CSI, and the second CSI is the CSI between the network device and the second terminal device.

19. The method according to claim 18, characterized in that Before sending the first auxiliary information to the network device, the method further includes: A second signal is received from the network device, where the second signal is used to determine the first auxiliary information.

20. The method according to claim 19, characterized in that The second signal includes at least one of the following: Synchronous signal; Positioning reference signal PRS; Tracking reference signal TRS; Channel State Information Reference Signal CSI-RS.

21. The method according to claim 18, characterized in that The first signal includes at least one of the following: Demodulation reference signal DMRS; Sounding Reference Signal SRS.

22. The method according to any one of claims 18 to 21, characterized in that: The first auxiliary information includes at least one of the following information: location information of the first terminal device; distance information between the first terminal device and the network device; Direction information of the first terminal device relative to the network device; beam information corresponding to the first terminal device; The association information between the position of the first terminal device and the position of a third terminal device, wherein the third terminal device is a terminal device other than the first terminal device within the signal range of the network device.

23. The method according to any one of claims 18 to 22, characterized in that: The first terminal device includes a low power consumption device and / or a low power consumption module.

24. A method for acquiring channel state information, characterized in that: The method is performed by a second terminal device, and the method includes: Sending the second auxiliary information or the first signal to the network device; The first signal is used to determine the second auxiliary information, the second auxiliary information includes information corresponding to the second terminal device for determining second channel state information CSI, and the second CSI is the CSI between the network device and the second terminal device.

25. The method according to claim 24, characterized in that Before sending the second auxiliary information to the network device, the method further includes: A second signal is received from the network device, where the second signal is used to determine the second auxiliary information.

26. The method according to claim 25, characterized in that The second signal includes at least one of the following: Synchronous signal; Positioning reference signal PRS; Tracking reference signal TRS; Channel State Information Reference Signal CSI-RS.

27. The method according to claim 24, characterized in that The first signal includes at least one of the following: Demodulation reference signal DMRS; Sounding Reference Signal SRS.

28. The method according to any one of claims 24 to 27, characterized in that: The second auxiliary information includes at least one of the following information: location information of the second terminal device; distance information between the second terminal device and the network device; Direction information of the second terminal device relative to the network device; beam information corresponding to the second terminal device; The association information between the location of the second terminal device and the location of the first terminal device.

29. The method according to claim 28, characterized in that The first terminal device includes a low power consumption device and / or a low power consumption module.

30. A device for acquiring channel state information, characterized in that: The device comprises: A processing module, configured to determine second CSI based on the first channel state information CSI and the auxiliary information; The first CSI is the CSI between the apparatus and a first terminal device, the second CSI is the CSI between the apparatus and a second terminal device, and the auxiliary information includes information corresponding to the terminal device for determining the second CSI.

31. A device for acquiring channel state information, characterized in that: The device comprises: A sending module, configured to send first channel state information CSI to a network device; The sending module is further used to send the first auxiliary information or the first signal to the network device; The first CSI is the CSI between the network device and the apparatus, the first signal is used to determine the first auxiliary information, the first auxiliary information includes information corresponding to the apparatus for determining the second CSI, and the second CSI is the CSI between the network device and the second terminal device.

32. A device for acquiring channel state information, characterized in that: The device comprises: A sending module, used for sending the second auxiliary information or the first signal to the network device; The first signal is used to determine the second auxiliary information, the second auxiliary information includes information corresponding to the device for determining second channel state information CSI, and the second CSI is the CSI between the network device and the device.

33. A communication device, characterized in that: The communication device comprises: processor; a receiver and / or transmitter connected to the processor; a memory for storing executable instructions for the processor; The communication device is used to implement the method for acquiring channel state information as described in any one of claims 1 to 17, or any one of claims 18 to 23, or any one of claims 24 to 29.

34. A computer-readable storage medium, characterized in that: The readable storage medium stores executable instructions, which are loaded and executed by a processor to implement the method for acquiring channel state information as described in any one of claims 1 to 17, or any one of claims 18 to 23, or any one of claims 24 to 29.

35. A chip, characterized in that: The chip includes a programmable logic circuit or a program, and the chip is used to implement the method for acquiring channel state information as described in any one of claims 1 to 17, or any one of claims 18 to 23, or any one of claims 24 to 29.

36. A computer program product, characterized in that The computer program product includes computer instructions, which are stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the method for obtaining channel state information as described in any one of claims 1 to 17, or any one of claims 18 to 23, or any one of claims 24 to 29.

37. A computer program, characterized in that The computer program includes computer instructions, and the processor of the computer device executes the computer instructions, so that the computer device performs the method for obtaining channel state information as described in any one of claims 1 to 17, or any one of claims 18 to 23, or any one of claims 24 to 29.

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