Channel state information acquisition method and device, equipment and medium

Abstract

The invention discloses a channel state information acquisition method and device, equipment and a medium, and belongs to the field of communication. The method is executed by a first node, and the method comprises the steps that a first signal from a second node is received, and the second node comprises a low-power-consumption terminal or a low-power-consumption module; and acquiring first channel state information (CSI) between the first node and the second node based on a measurement result of the first signal. Since the acquisition of the first CSI does not depend on the measurement of the second node, the power consumption required by the second node to measure the reference signal is reduced. Moreover, the acquisition of the first CSI does not depend on the second node to feed back the CSI information, so that the resource overhead required by the second node to feed back the CSI information is reduced. Moreover, the CSI information does not need to be fed back based on a vector quantization or codebook method, so that the loss of the precision and accuracy of the CSI information is avoided.

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, where the method is performed by a first node and includes:

[0007] receiving a first signal from a second node, wherein the second node includes a low-power consumption terminal or a low-power consumption module;

[0008] Based on the measurement result of the first signal, first channel state information CSI between the first node and the second node is acquired.

[0009] According to another aspect of an embodiment of the present application, a method for acquiring channel state information is provided, where the method is performed by a second node and includes:

[0010] sending or backscattering a first signal, where a measurement result of the first signal is used to obtain first channel state information CSI between the first node and the second node;

[0011] The second node includes a low-power consumption terminal or a low-power consumption module.

[0012] According to another aspect of an embodiment of the present application, a method for acquiring channel state information is provided, the apparatus including:

[0013] a receiving module, configured to receive a first signal from a second node, wherein the second node includes a low-power consumption terminal or a low-power consumption module;

[0014] The processing module is configured to obtain first channel state information CSI between the device and the second node based on a measurement result of the first signal.

[0015] According to another aspect of an embodiment of the present application, a method for acquiring channel state information is provided, the apparatus including:

[0016] a sending module, configured to send or backscatter a first signal, wherein a measurement result of the first signal is used to obtain first channel state information CSI between the first node and the device;

[0017] Wherein, the device includes a low-power consumption terminal or a low-power consumption module.

[0018] According to one aspect of an embodiment of the present application, a communication device is provided, the communication device including:

[0019] processor;

[0020] a receiver and / or transmitter connected to the processor;

[0021] a memory for storing executable instructions for the processor;

[0022] The communication device is used to implement the channel state information acquisition method as described above.

[0023] According to another aspect of an embodiment of the present application, a communication device is provided, the communication device comprising: a receiver and / or a transmitter;

[0024] The communication device is used to implement the channel state information acquisition method as described above.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] The technical solutions provided by the embodiments of the present application may have the following beneficial effects:

[0030] CSI is obtained through the first signal from the second node. Since the second node includes a low-power terminal or a low-power module, the power consumption required for the second node to transmit the first signal is extremely low or even zero, so that the overall power consumption required to obtain CSI is significantly reduced. Compared with periodically obtaining CSI through a communication device that does not include a low-power terminal or a low-power module, the method provided in the embodiment of the present application not only saves the power consumption of the communication device, but also reduces the resource overhead of transmitting the reference signal and feeding back the CSI information. Since the acquisition of the first CSI does not depend on the measurement of the second node, the power consumption required for the second node to measure the reference signal is reduced. Moreover, the acquisition of the first CSI does not depend on the feedback of the CSI information by the second node, which reduces the resource overhead required for the second node to feed back the CSI information. Moreover, since there is no need to feed back the CSI information based on a vector quantization or codebook method, the loss of precision and accuracy of the CSI information is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] FIG1 shows a schematic diagram of a wireless communication system provided by an exemplary embodiment of the present application;

[0033] FIG2 shows a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application;

[0034] FIG3 shows a schematic diagram of a communication system provided by an exemplary embodiment of the present application;

[0035] FIG4 shows a schematic diagram of radio frequency energy harvesting provided by an exemplary embodiment of the present application;

[0036] FIG5 is a schematic diagram showing a backscatter communication process provided by an exemplary embodiment of the present application;

[0037] FIG6 shows a schematic diagram of resistive load modulation provided by an exemplary embodiment of the present application;

[0038] FIG7 is a schematic flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0039] FIG8 is a schematic flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0040] FIG9 is a schematic flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0041] FIG10 is a schematic flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0042] FIG11 is a schematic flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0043] FIG12 is a schematic flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0044] FIG13 is a schematic diagram showing a flow chart of a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0045] FIG14 is a schematic diagram showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0046] FIG15 is a schematic flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0047] FIG16 is a schematic diagram showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0048] FIG17 is a schematic flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0049] FIG18 is a schematic diagram showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0050] FIG19 is a schematic diagram showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0051] FIG20 is a schematic diagram showing a flow chart of a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0052] FIG21 is a schematic diagram showing a method for acquiring channel state information provided by an exemplary embodiment of the present application;

[0053] FIG22 shows a structural block diagram of a device for acquiring channel state information provided by an exemplary embodiment of the present application;

[0054] FIG23 shows a structural block diagram of a device for acquiring channel state information provided by an exemplary embodiment of the present application;

[0055] FIG24 shows a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application;

[0056] FIG25 shows a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0057] 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.

[0058] 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.

[0059] 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".

[0060] 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.

[0061] 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. B, gNB) or transmission point (TRP or TP), or one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G system, or it can also be a network node constituting a gNB or transmission point, such as a baseband unit (BBU) or 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, etc., or a reader / writer of a radio frequency identification (RFID) system.

[0062] 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.

[0063] The network device 110 and the terminal device 120 communicate with each other via some air interface technology, such as a Uu interface.

[0064] 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.

[0065] The terminal device 120 and the terminal device 130 communicate with each other via a direct communication interface, such as a PC5 interface.

[0066] 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.

[0067] 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.

[0068] 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, 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).

[0069] 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.

[0070] 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.

[0071] With the development of communication technology and the expansion of communication needs, the requirements for the overall size, manufacturing cost, service life, ease of use, recycling, power consumption, etc. of communication equipment are becoming increasingly higher. The communication equipment shown in Figure 2 can meet these high requirements.

[0072] FIG2 shows a structural block diagram of a communication device 210 provided in an exemplary embodiment of the present application. The communication device 210 may be implemented as the terminal device 120 and / or the terminal device 130 as shown in FIG1 , or may be implemented as the network device 110 as shown in FIG1 .

[0073] Communication device 210 includes a primary receiver 101 and a secondary receiver 103. The secondary receiver 103 consumes less power than the primary receiver 101. The secondary receiver 103 can replace the primary receiver 101 in receiving some signals. This means that operations that would normally be performed by the primary receiver 101 can now be performed by the secondary receiver 103. Furthermore, the primary receiver 101 can remain off unless instructed to do so by the secondary receiver 103, preventing the primary receiver 101 from wasting energy when not receiving signals or data. Because the secondary receiver 103 consumes less power, its replacement can significantly reduce the overall power consumption of the terminal device, achieving energy savings.

[0074] Furthermore, the communication device 210 shown in FIG2 can also be used in conjunction with a wake-up signal (WUS) mechanism. If the auxiliary receiver 103 receives a WUS, the main receiver 101 is dynamically awakened. If the auxiliary receiver 103 does not receive a WUS, the main receiver 101 is not awakened, and the main receiver 101 remains in a powered-down state. Since the auxiliary receiver 103 does not need to be turned on or off to save power like the main receiver 101, but can be activated by the WUS at any time and receive wake-up information, compared to the solution where the main receiver 101 receives the WUS, the auxiliary receiver 103 receiving the WUS can reduce power consumption even more. Therefore, the low-power feature of the auxiliary receiver 103 can further enhance the energy-saving effect of the WUS mechanism and further reduce the overall power consumption of the terminal device.

[0075] The primary receiver may also be referred to as a first receiver, and the secondary receiver may also be referred to as a second receiver or a wake-up receiver (WUR). This application does not impose any restrictions on the naming of these two receivers.

[0076] Based on the energy source and usage, communication devices 210 can be divided into the following three categories:

[0077] (1) Passive devices; Passive devices do not require built-in batteries. When a passive device approaches a network device (such as the reader of an RFID system), the passive device is within the near field formed by the radiation of the network device antenna. Therefore, the passive device antenna generates an induced current through electromagnetic induction, and the induced current drives the low-power chip circuit of the passive device. This realizes the demodulation of the forward link signal and the modulation of the backward link signal. For the backscatter link, the passive device can use backscatter or extremely low-power active transmission to transmit the signal. Passive devices do not require built-in batteries to drive either the forward link or the reverse link. Therefore, passive devices can be considered as zero-power devices.

[0078] In addition to not requiring batteries, the RF circuits and baseband circuits of passive devices are also very simple. For example, they do not require components such as LNA, power amplifier (PA), crystal oscillator, analog to digital converter (ADC), etc., which makes passive devices have many advantages such as small size, light weight, very low price, and long service life.

[0079] (2) Semi-passive devices: Semi-passive devices do not have conventional batteries installed on them. Instead, they use RF energy harvesting modules to harvest radio wave energy and store the harvested energy in an energy storage unit (such as a capacitor). After the energy storage unit obtains energy, it can drive the low-power chip circuit of the semi-passive device. This enables demodulation of forward link signals and modulation of backward link signals. For backscatter links, semi-passive devices can use backscatter or low-power active transmission to transmit signals.

[0080] Semi-passive devices do not require built-in batteries to drive either the forward link or the reverse link. Although they use energy stored in capacitors, this energy comes from radio energy or ambient energy collected by the RF energy harvesting module. Therefore, semi-passive devices can be considered zero-power devices.

[0081] Semi-passive devices inherit many advantages of passive devices, such as small size, light weight, very low price, long service life, etc.

[0082] (3) Active devices; Active devices can have built-in batteries. The battery is used to drive the low-power chip circuit of the active device. It can realize the demodulation of the forward link signal and the modulation of the reverse link signal. The reverse link signal transmission of the active device can be realized by backscattering without consuming the active device's own power. Alternatively, the active device can realize reverse link transmission by low-power active transmission. Although the battery is built in, this type of active device has extremely low power consumption and complexity, so the battery capacity can be set within a smaller range, thereby achieving smaller cost and size. The built-in battery of the active device can also be used as an energy storage unit to store the ambient energy collected by the energy harvesting module, so that the maintenance cycle of the active device is longer or even maintenance-free.

[0083] Active devices use built-in batteries to increase their communication range and improve communication reliability. Therefore, active devices are used in scenarios with relatively high requirements for communication distance and read latency.

[0084] Based on the transmitter type, the communication devices 210 can be divided into the following three categories:

[0085] (1) Backscatter-based devices: These devices use the backscatter method described above for uplink data transmission. These devices do not have an active transmitter for active transmission, but only a backscatter transmitter. Therefore, when these devices transmit uplink data, they require network equipment to provide a carrier. These devices use the carrier-based backscattering to achieve uplink data transmission.

[0086] (2) Devices based on active transmitters: These devices use active transmitters with active transmission capabilities for uplink data transmission. Therefore, when sending uplink data, these devices can use their own active transmitters to send uplink data without the need for network equipment to provide a carrier. Active transmitters suitable for this type of device can be, for example, ultra-low power ASK transmitters and ultra-low power FSK transmitters. Based on current implementations, when transmitting a 100 microwatt signal, the overall power consumption of this type of transmitter can be reduced to 400-600 microwatts.

[0087] (3) Devices with both backscatter and active transmitters: This type of device supports both backscatter and active transmitters. This type of device can determine whether to use backscatter or active transmitters for active transmission based on different situations (such as different power levels, different available environmental energy levels), or based on the scheduling of network devices.

[0088] The communication device 210 shown in Figure 2 can also be called a low-power device, an ultra-low-power device, a zero-power device, a Passive IoT device, or an Ambient Power Enabled Internet of Things (Ambient IoT / A-IoT) device.

[0089] The communication technology implemented by the communication device 210 shown in Figure 2 can be called low-power communication technology, or ultra-low-power communication technology, or zero-power communication technology, or ambient power Internet of Things (Ambient Power Enabled Internet of Things, Ambient IoT / A-IoT) technology, or passive Internet of Things (Passive IoT) technology, or zero-power Internet of Things technology.

[0090] A-IoT devices using A-IoT technology can use various environmental energies, such as radio frequency energy, light energy, solar energy, thermal energy, and mechanical energy, to power their own operations. A-IoT devices based on radio frequency energy harvesting may require network equipment to provide radio frequency power signals.

[0091] A-IoT devices can be divided into the following three types, each with its own level of complexity and communication capabilities:

[0092] Device A: Does not have energy storage capabilities. It cannot send independent signals and uses backscatter transmission.

[0093] Device B: Has energy storage capabilities. It cannot transmit independent signals and instead uses backscatter transmission. It can use the stored energy to amplify the backscattered signal.

[0094] Device C: Has energy storage capabilities and can send independent signals, i.e., has active transmission capabilities.

[0095] Among them, device A has the lowest complexity and power consumption, which can be as low as 1 microwatt (μW), but its communication range is limited, generally only a few meters. Device A requires network equipment to provide a carrier signal for backscattering transmission. Device C generally has a large-capacity capacitor to store energy from the environment, and its power consumption can support hundreds of microwatts. It can support active signal transmission and has a longer communication range. Because device C can actively transmit, it does not require network equipment to provide a carrier signal for device C. The complexity and power consumption of device B are between devices A and C.

[0096] Compared with other IoT devices, A-IoT devices have many advantages such as no need for conventional batteries, no maintenance, small size, low complexity and low cost, and long life cycle.

[0097] Fig. 3 shows a communication system 300 provided by an exemplary embodiment of the present application. For example, the communication system 300 includes a network device 110 and a terminal device 120.

[0098] Terminal device 120 includes the primary receiver 101 and the secondary receiver 103 as shown in Figure 2. Optionally, in addition to the primary receiver 101 and the secondary receiver 103, terminal device 120 also includes an energy harvesting module 321. Optionally, in addition to the primary receiver 101 and the secondary receiver 103, terminal device 120 also includes a backscatter communication module 322. Optionally, in addition to the primary receiver 101 and the secondary receiver 103, terminal device 120 also includes a logic processing module 323. Exemplarily, logic processing module 323 includes a low-power computing module. Optionally, in addition to the primary receiver 101 and the secondary receiver 103, terminal device 120 also includes a sensor module 324. Optionally, in addition to the primary receiver 101 and the secondary receiver 103, terminal device 120 also includes a memory 325. Optionally, in addition to the primary receiver 101 and the secondary receiver 103 , the terminal device 120 further includes one or more of an energy collection module 321 , a backscatter communication module 322 , a logic processing module 323 , a sensor module 324 and a memory 325 .

[0099] Exemplarily, the energy collection module 321 can collect energy carried by radio waves in space to power the various modules of the terminal device 120. After the terminal device 120 obtains energy, it can receive signals from the network device 110 through the auxiliary receiver 103 and the main receiver 101, and can also send data to the network device 110 through the backscatter communication module 322. The data sent by the terminal device 120 can be data stored by itself (such as an identity identifier or pre-written information, such as the production date, brand, manufacturer, etc. of the product). The sensor module 324 can include various sensors, and the terminal device 120 can report the data collected by various sensors based on a low-power mechanism. The memory 325 is used to store some basic information (such as item identification, etc.) or obtain sensor data such as ambient temperature and ambient humidity.

[0100] The terminal device 120 can use the logic processing module 323 to implement simple signal demodulation, decoding or encoding, modulation and other simple computing tasks, and the hardware design can be very simple, making the terminal device 120 very low in cost and small in size.

[0101] It should be understood that the modules included in the terminal device 120 shown in FIG3 are merely examples and not limitations.

[0102] Figure 4 shows a schematic diagram of radio frequency power harvesting (RFP) performed by energy harvesting module 321. RF energy harvesting is based on the principle of electromagnetic induction. RF module RF, connected in parallel with capacitor C and load resistor RL, collects electromagnetic wave energy from space, generating the energy required to power zero-power devices. This energy is used to drive low-power demodulation modules, modulation modules, sensors, and memory access. Therefore, zero-power devices do not require traditional batteries.

[0103] Figure 5 shows a schematic diagram of backscatter communication module 322 performing backscatter communication. Terminal device 120 receives wireless signal carrier 131 transmitted by network device 110's transmitter (TX) module 111 using amplifier (AMP) 112. Terminal device 120 modulates wireless signal carrier 131, loads the information to be transmitted using logic processing module 323, and harvests radio frequency energy using energy harvesting module 321. Terminal device 120 radiates modulated reflected signal 132 using antenna 316. This information transmission process is called backscatter communication. Network device 110's receiver (RX) module 113 receives modulated reflected signal 132 using low-noise amplifier (LNA) 114. Backscatter and load modulation are closely related. Load modulation achieves modulation by adjusting and controlling the circuit parameters of the terminal device 120's oscillator circuit according to the data stream's rhythm, causing parameters such as the impedance of the terminal device 120 to change accordingly.

[0104] Load modulation technology mainly includes resistive load modulation and capacitive load modulation. Figure 6 shows a schematic diagram of resistive load modulation. In resistive load modulation, the load resistor RL is connected in parallel with the third resistor R3, and the switch S based on binary code control is turned on or off. The on and off of the third resistor R3 will cause the voltage on the circuit to change. The load resistor RL maintains a parallel connection relationship with the first capacitor C1, the load resistor RL maintains a series connection relationship with the second resistor R2, and the second resistor R2 maintains a series connection relationship with the first inductor L1. The first inductor L1 is coupled with the second inductor L2, and the second inductor L2 maintains a series connection relationship with the second capacitor C2. For example, amplitude shift keying (ASK) can be implemented, that is, the amplitude of the backscattered signal of the terminal device is adjusted to achieve signal modulation and transmission. Similarly, in capacitive load modulation, the resonant frequency of the circuit can be changed by turning the capacitor on and off, realizing frequency shift keying (FSK), that is, the operating frequency of the backscattered signal of the terminal device is adjusted to achieve signal modulation and transmission.

[0105] The terminal device 120 can perform information modulation on the incoming signal by means of load modulation, thereby realizing the backscatter communication process.

[0106] Optionally, the network device 110 also includes one or more of a primary receiver 101 , a secondary receiver 103 , an energy harvesting module 321 , a backscatter communication module 322 , a logic processing module 323 , a sensor module 324 and a memory 325 .

[0107] Due to its significant advantages such as extremely low cost, extremely low power consumption, and small size, the communication system shown in Figure 3 can be widely used in various industries, such as logistics, smart warehousing, smart agriculture, energy and electricity, industrial Internet, etc. for vertical industries; it can also be applied to personal applications such as smart wearables and smart homes.

[0108] For example, it is applied to at least the following four scenarios:

[0109] (1) Object recognition, such as logistics, production line product management, and supply chain management;

[0110] (2) Environmental monitoring, such as temperature, humidity, and harmful gas monitoring of the working environment and natural environment;

[0111] (3) Positioning, such as indoor positioning, intelligent object search, and production line item positioning;

[0112] (4) Intelligent control, such as intelligent control of various electrical appliances in smart homes (turning on and off air conditioners, adjusting temperature), and intelligent control of various facilities in agricultural greenhouses (automatic irrigation and fertilization).

[0113] The communication system shown in Figure 3 can also meet the communication needs of developing ultra-low-cost, extremely small, battery-free / maintenance-free cellular Internet of Things. For example, IoT technologies such as NarrowBand-Internet of Things (NB-IoT), Machine-Type Communications (MTC), and RedCap face harsh communication environments (such as extreme environments such as high temperature, extremely low temperature, high humidity, high pressure, high radiation, or high-speed movement), extremely small terminal form factors, and extremely low-cost IoT communication needs.

[0114] In the communication system shown in FIG1 or FIG3 , if you want to improve the communication quality and ensure the communication efficiency of the system, the prerequisite is to accurately obtain the channel quality or channel state changes.

[0115] 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.

[0116] 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), and Layer 1 Reference Signal Received Power (L1-RSRP).

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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 obtain the second sidelink channel quality by measuring the reference signal.

[0121] 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.

[0122] 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.

[0123] In the embodiment of the present application, CSI feedback is also called CSI backtransmission or CSI reporting.

[0124] 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, a network device), and the present application does not limit its specific implementation method. The communication protocol agreement can also be understood as a predefined communication protocol.

[0125] FIG7 shows 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 node and includes:

[0126] Step 720: Receive a first signal from a second node, where the second node includes a low-power consumption terminal or a low-power consumption module;

[0127] Among them, low-power terminals are also called zero-power terminals, ultra-low-power terminals, passive IoT devices, or ambient IoT (A-IoT) devices.

[0128] The low-power module may also be referred to as a zero-power module, an ultra-low-power module, a passive IoT module, or an ambient energy IoT module. Optionally, the low-power module includes one or more of the primary receiver 101, the secondary receiver 103, the energy harvesting module 321, the backscatter communication module 322, the logic processing module 323, the sensor module 324, and the memory 325. Optionally, the logic processing module 323 includes a low-power computing module.

[0129] In some embodiments, the second node is a low-power terminal. For example, the second node can be implemented as the terminal device 120 and / or the terminal device 130 as described above.

[0130] In some embodiments, the second node is a communication device including a low-power module, for example, the second node is a terminal device including a low-power module (such as the terminal device 120 and / or terminal device 130 described above), or a network device including a low-power module (such as the network device 110 described above).

[0131] The second node supports a low-power communication method, which can also be understood as the second node having a low-power communication capability, or the second node having a low-power characteristic.

[0132] Step 740: Acquire first CSI between the first node and the second node based on the measurement result of the first signal.

[0133] The first CSI, ie, the CSI of the channel from the second node to the first node, may reflect the channel quality or channel status from the second node to the first node.

[0134] In some embodiments, the CSI includes at least one of the following: CQI, PMI, CRI, SSBRI, layer indicator, rank indicator, L1-RSRP.

[0135] The first node is a receiver of the first signal. Exemplarily, in a downlink scenario, the receiver refers to a terminal device (such as the terminal device shown in Figure 1, Figure 2, or Figure 3); in an uplink scenario, the receiver refers to a network device (such as the network device shown in Figure 1, Figure 2, or Figure 3); and in a sidelink scenario, the receiver refers to a second terminal device (such as the terminal device shown in Figure 1, Figure 2, or Figure 3).

[0136] In summary, the method provided in the embodiment of the present application obtains CSI using a first signal from a second node. Because the second node includes a low-power terminal or a low-power module, the power consumption required for the second node to transmit the first signal is extremely low or even zero, significantly reducing the overall power consumption required to obtain CSI. Compared to periodically obtaining CSI through a communication device that does not include a low-power terminal or a low-power module, the method provided in the embodiment of the present application not only saves power consumption of the communication device, but also reduces the resource overhead of transmitting reference signals and feeding back CSI information.

[0137] In this application, since the acquisition of the first CSI does not rely on the measurement of the second node, the power consumption required by the second node to measure the reference signal is reduced. Furthermore, since the acquisition of the first CSI does not rely on the feedback of CSI information by the second node, the resource overhead required for the second node to feedback CSI information is reduced. Furthermore, since there is no need to feedback CSI information based on vector quantization or codebook methods, the precision and accuracy of the CSI information is avoided.

[0138] In some embodiments, step 720 may be implemented as step 722. Optionally, in addition to step 722 and step 740, the method for acquiring channel state information may further include step 760, as shown in FIG8 . FIG8 is 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 first node shown in FIG7 , and the method comprising:

[0139] Step 722: Receive a first signal sent by a second node, where the second node includes a low-power consumption terminal or a low-power consumption module.

[0140] The first signal is sent from the second node to the first node.

[0141] In some embodiments, the first signal is sent by the second node to the first node based on first information, wherein the first information includes indication information and / or configuration information from other nodes, and the other nodes include nodes other than the second node.

[0142] In some embodiments, the first information includes at least one of the following information:

[0143] a transmission period of the first signal;

[0144] The time domain resource corresponding to the first signal;

[0145] Frequency domain resources corresponding to the first signal;

[0146] The sequence corresponding to the first signal;

[0147] The modulation method of the first signal;

[0148] The encoding method of the first signal.

[0149] Regarding the transmission period of the first signal, for example, if the first signal is a periodically transmitted signal, the first information may indicate a transmission period value. For another example, if the transmission of the first signal is implemented through semi-persistent scheduling, the first information may indicate a transmission period value corresponding to the semi-persistent scheduling.

[0150] The time domain resources corresponding to the first signal refer to the time domain resources occupied by the transmission of the first signal. In some embodiments, the first information indicates the time domain resources occupied by each first signal; or, the first information indicates the set of time domain resources corresponding to each first signal; or, the first information indicates the set of time domain resources corresponding to multiple first signals. Each first signal corresponds to a different second node, that is, the first signals are distinguished by the sender.

[0151] The frequency domain resources corresponding to the first signal refer to the frequency domain resources occupied by the transmission of the first signal. In some embodiments, the first information indicates the frequency domain resources occupied by each first signal; or the first information indicates the set of frequency domain resources corresponding to each first signal; or the first information indicates the set of frequency domain resources corresponding to multiple first signals. Each first signal corresponds to a different second node, that is, the first signals are distinguished by the sender.

[0152] The sequence corresponding to the first signal includes an original sequence used to generate the first signal and / or a sequence used to randomly process the first signal, wherein the sequence used to randomly process the first signal is a random sequence or a pseudo-random sequence.

[0153] The modulation mode of the first signal includes at least one of the following: Orthogonal Frequency-Division Multiplexing (OFDM) modulation, Quadrature Phase Shift Keying (QPSK) modulation, Amplitude Shift Keying (ASK) modulation, Frequency Shift Keying (FSK) modulation, On-Off Keying (OOK) modulation, Multi-Carrier On-Off Keying (MC-OOK) modulation, and Quadrature Amplitude Modulation (QAM).

[0154] The encoding method of the first signal includes at least one of the following: non-return to zero (NRZ) encoding, Manchester encoding, unipolar return to zero (URZ) encoding, differential binary phase (DBP) encoding, Miller encoding, and differential encoding.

[0155] In some embodiments, the first information is preset information, or the first information is agreed upon by a communication protocol, or the first information is determined by other nodes.

[0156] In some embodiments, the first signal carries at least one of the following information:

[0157] Location information, used to indicate the location of the second node;

[0158] Beam information, used to indicate the beam used by the second node to send the first signal;

[0159] Frequency domain resource information, used to indicate the frequency domain resource used by the second node to send the first signal.

[0160] The location information may be used to indicate the absolute location and / or relative location of the second node.

[0161] 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 position information can indicate the absolute position of the second node by latitude and longitude or coordinates.

[0162] In some embodiments, the relative position refers to the position relative to a reference point, which may be a first node or another node. The relative position is also referred to as a relative geographic location. For example, the position information may indicate the relative position of the second node by coordinates, or the position information may indicate the relative position of the second node by a latitude and longitude offset value relative to the reference point. For example, the reference point is the first node, and within the cell corresponding to the first node, several areas are divided with the first node as the reference point, and the relative position of the second node is indicated by the area number.

[0163] The location information carried by the first signal can be used by the first node to obtain the channel status or channel quality from the second node at different locations to the first node, so that the first node can clearly understand the differences or correlations between the channels corresponding to the second nodes.

[0164] The beam information carried by the first signal can be used by the first node to obtain the channel status or channel quality from the second node located in different directions to the first node, so that the first node can clearly understand the differences or correlations between the channels corresponding to each beam direction.

[0165] The frequency domain resource information carried by the first signal can be used by the first node to perform frequency offset estimation, which is beneficial to improving the reception quality and measurement accuracy of the first signal.

[0166] In some embodiments, location information, beam information, and frequency domain resource information may be collectively referred to as control information or auxiliary information.

[0167] The second node is the sender of the first signal. Exemplarily, in a downlink scenario, the sender refers to a network device (such as the network device shown in Figure 1, Figure 2, or Figure 3); in an uplink scenario, the sender refers to a terminal device (such as the terminal device shown in Figure 1, Figure 2, or Figure 3); in a sidelink scenario, the sender refers to a first terminal device (such as the terminal device shown in Figure 1, Figure 2, or Figure 3).

[0168] For the relevant content of the second node, please refer to step 720 and will not be repeated here.

[0169] Step 740: Acquire first CSI between the first node and the second node based on the measurement result of the first signal;

[0170] In some embodiments, the first node measures the received first signal and obtains a measurement result of the first signal.

[0171] For the relevant content of the first CSI and the first node, please refer to the previous text and will not be repeated here.

[0172] In some embodiments, the first node also includes a low power consumption terminal or a low power consumption module.

[0173] Step 760: Determine a second CSI between the first node and the third node based on the first CSI.

[0174] The third node includes nodes other than the first node.

[0175] In some embodiments, the first CSI is input into a first AI model to obtain a second CSI.

[0176] In some embodiments, the first AI model is trained by the first node, or is trained by other nodes and sent to the first node, or is jointly trained by the first node and other nodes.

[0177] In some embodiments, the CSI obtained through the AI ​​model can have higher accuracy. For example, the first node can further obtain second CSI between the first node and the second node based on the first CSI. The second CSI is superior to the first CSI in terms of precision and accuracy. Optionally, the first CSI represents the channel quality within a first time domain range, and the second CSI 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.

[0178] In some embodiments, the first node is supported to obtain the second CSI corresponding to the third node by inputting the first CSI corresponding to the second node into the AI ​​model without measuring the first signal from the third node, thereby saving the power consumption and resource overhead of the third node transmitting the first signal and the first node measuring the first signal from the third node, reducing the overall resource overhead and equipment power consumption in the communication system, and improving the efficiency of obtaining CSI in the communication system.

[0179] In some embodiments, the first node sends a signal and / or data to the second node 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.

[0180] In some embodiments, the first node sends a signal and / or data to the third node 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.

[0181] In summary, the method provided in the embodiment of the present application obtains CSI through the first signal from the second node. Since the second node includes a low-power terminal or a low-power module, the power consumption required for the second node to transmit the first signal is extremely low or even zero, so that the overall power consumption required to obtain CSI is significantly reduced. Compared with periodically obtaining CSI through a communication device that does not include a low-power terminal or a low-power module, the method provided in the embodiment of the present application not only saves the power consumption of the communication device, but also reduces the resource overhead of transmitting reference signals and feeding back CSI information. In addition, by configuring the parameters for the second node to transmit the first signal through the first information, the efficiency of scheduling the first signal is improved and the resource overhead required for scheduling the first signal is reduced.

[0182] In some embodiments, step 720 may be implemented as step 724. Optionally, in addition to step 724 and step 740, the method for obtaining channel state information may further include step 760, as shown in FIG9 . FIG9 is a flow chart of a method for obtaining channel state information provided by an exemplary embodiment of the present application, the method being executed by the first node shown in FIG7 , and the method comprising:

[0183] Step 724: Receive the first signal backscattered by the second node, where the second node includes a low-power consumption terminal or a low-power consumption module.

[0184] The first signal is backscattered by the second node.

[0185] In some embodiments, before executing step 724, the first node further sends a second signal to the second node, where the first signal is a backscattered signal of the second signal. That is, the first node sends the second signal to the second node, and the second node receives the second signal and backscatters the first signal.

[0186] In some embodiments, the first signal carries at least one of the following information:

[0187] Location information, used to indicate the location of the second node;

[0188] Beam information, used to indicate the beam used by the second node to backscatter the first signal;

[0189] Frequency domain resource information, used to indicate the frequency domain resource used by the second node to backscatter the first signal.

[0190] The location information may be used to indicate the absolute location and / or relative location of the second node.

[0191] 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 position information can indicate the absolute position of the second node by latitude and longitude or coordinates.

[0192] In some embodiments, the relative position refers to the position relative to a reference point, which may be a first node or another node. The relative position is also referred to as a relative geographic location. For example, the position information may indicate the relative position of the second node by coordinates, or the position information may indicate the relative position of the second node by a latitude and longitude offset value relative to the reference point. For example, the reference point is the first node, and within the cell corresponding to the first node, several areas are divided with the first node as the reference point, and the relative position of the second node is indicated by the area number.

[0193] The location information carried by the first signal can be used by the first node to obtain the channel status or channel quality from the second node at different locations to the first node, so that the first node can clearly understand the differences or correlations between the channels corresponding to the second nodes.

[0194] The beam information carried by the first signal can be used by the first node to obtain the channel status or channel quality from the second node located in different directions to the first node, so that the first node can clearly understand the differences or correlations between the channels corresponding to each beam direction.

[0195] The frequency domain resource information carried by the first signal can be used by the first node to perform frequency offset estimation, which is beneficial to improving the reception quality and measurement accuracy of the first signal.

[0196] The second node is a backscatterer of the first signal. For example, in a downlink scenario, the sender refers to a network device (such as the network device shown in Figure 1, Figure 2, or Figure 3); in an uplink scenario, the sender refers to a terminal device (such as the terminal device shown in Figure 1, Figure 2, or Figure 3); and in a sidelink scenario, the sender refers to a first terminal device (such as the terminal device shown in Figure 1, Figure 2, or Figure 3).

[0197] For the relevant content of the second node, please refer to step 720 and will not be repeated here.

[0198] Step 740: Acquire first CSI between the first node and the second node based on the measurement result of the first signal;

[0199] In some embodiments, the first node measures the received first signal and obtains a measurement result of the first signal.

[0200] For the relevant content of the first CSI and the first node, please refer to the previous text and will not be repeated here.

[0201] In some embodiments, the first node also includes a low power consumption terminal or a low power consumption module.

[0202] Step 760: Determine a second CSI between the first node and the third node based on the first CSI.

[0203] The third node includes nodes other than the first node.

[0204] In some embodiments, the third node includes the second node, and the first node may further acquire second CSI between the first node and the second node based on the first CSI. The second CSI may differ from the first CSI in terms of precision, accuracy, validity period, etc.

[0205] In some embodiments, the third node does not include the second node, and the first node may obtain second CSI between the first node and the third node based on the first CSI. The second CSI corresponds to a channel sender different from the first CSI.

[0206] In some embodiments, the first CSI is input into a first AI model to obtain a second CSI.

[0207] In some embodiments, the first AI model is trained by the first node, or is trained by other nodes and sent to the first node, or is jointly trained by the first node and other nodes.

[0208] In some embodiments, the CSI obtained through the AI ​​model can have higher accuracy. For example, the first node can further obtain second CSI between the first node and the second node based on the first CSI. The second CSI is superior to the first CSI in terms of precision and accuracy. Optionally, the first CSI represents the channel quality within a first time domain range, and the second CSI 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.

[0209] In some embodiments, the first node is supported to obtain the second CSI corresponding to the third node by inputting the first CSI corresponding to the second node into the AI ​​model without measuring the first signal from the third node, thereby saving the power consumption and resource overhead of the third node transmitting the first signal and the first node measuring the first signal from the third node, reducing the overall resource overhead and equipment power consumption in the communication system, and improving the efficiency of obtaining CSI in the communication system.

[0210] In some embodiments, the first node sends a signal and / or data to the second node 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.

[0211] In some embodiments, the first node sends a signal and / or data to the third node 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.

[0212] In summary, the method provided in the embodiment of the present application obtains CSI through the first signal from the second node. Since the second node includes a low-power terminal or a low-power module, the power consumption required for the second node to transmit the first signal is extremely low or even zero, so that the overall power consumption required to obtain CSI is significantly reduced. Compared with periodically obtaining CSI through a communication device that does not include a low-power terminal or a low-power module, the method provided in the embodiment of the present application not only saves the power consumption of the communication device, but also reduces the resource overhead of transmitting reference signals and feedback CSI information. In addition, it supports measuring the first signal backscattered by the second node to obtain the first CSI. Since there is no need to configure the second node to periodically send the first signal, the first node sends the second signal to the second node on demand and dynamically to trigger the second node to backscatter the first signal, which greatly improves the flexibility of obtaining CSI, reduces the resource overhead required for scheduling the first signal, and avoids the waste of resources and power consumption caused by the second node periodically sending the first signal.

[0213] FIG10 is a schematic 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 second node and includes:

[0214] Step 1020: Send or backscatter a first signal, and a measurement result of the first signal is used to obtain a first CSI between the first node and the second node.

[0215] In some embodiments, the second node includes a low power consumption terminal or a low power consumption module.

[0216] Among them, low-power terminals are also called zero-power terminals, ultra-low-power terminals, passive IoT devices, or ambient IoT (A-IoT) devices.

[0217] The low-power module may also be referred to as a zero-power module, an ultra-low-power module, a passive IoT module, or an ambient energy IoT module. Optionally, the low-power module includes one or more of the primary receiver 101, the secondary receiver 103, the energy harvesting module 321, the backscatter communication module 322, the logic processing module 323, the sensor module 324, and the memory 325. Optionally, the logic processing module 323 includes a low-power computing module.

[0218] In some embodiments, the second node is a low-power terminal. For example, the second node can be implemented as the terminal device 120 and / or the terminal device 130 as described above.

[0219] In some embodiments, the second node is a communication device including a low-power module, for example, the second node is a terminal device including a low-power module (such as the terminal device 120 and / or terminal device 130 described above), or a network device including a low-power module (such as the network device 110 described above).

[0220] The second node supports a low-power communication method, which can also be understood as the second node having a low-power communication capability, or the second node having a low-power characteristic.

[0221] The first CSI, ie, the CSI of the channel from the second node to the first node, may reflect the channel quality or channel status from the second node to the first node.

[0222] In some embodiments, the CSI includes at least one of the following: CQI, PMI, CRI, SSBRI, layer indicator, rank indicator, L1-RSRP.

[0223] The second node is a sender or backscatterer of the first signal. Exemplarily, in a downlink scenario, the sender or backscatterer refers to a network device (such as the network device shown in Figure 1, Figure 2, or Figure 3); in an uplink scenario, the sender or backscatterer refers to a terminal device (such as the terminal device shown in Figure 1, Figure 2, or Figure 3); and in a sidelink scenario, the sender or backscatterer refers to a first terminal device (such as the terminal device shown in Figure 1, Figure 2, or Figure 3).

[0224] The first node is a receiver of the first signal. Exemplarily, in a downlink scenario, the receiver refers to a terminal device (such as the terminal device shown in Figure 1, Figure 2, or Figure 3); in an uplink scenario, the receiver refers to a network device (such as the network device shown in Figure 1, Figure 2, or Figure 3); and in a sidelink scenario, the receiver refers to a second terminal device (such as the terminal device shown in Figure 1, Figure 2, or Figure 3).

[0225] In summary, the method provided in the embodiment of the present application supports acquiring CSI by sending or backscattering a first signal through a second node. Because the second node includes a low-power terminal or a low-power module, the power consumption required for the second node to transmit the first signal is extremely low or even zero, thereby reducing the overall power consumption required for the first and second nodes to acquire CSI. Compared with periodically acquiring CSI through a communication device that does not include a low-power terminal or a low-power module, the method provided in the embodiment of the present application not only saves the power consumption of the communication device, but also reduces the resource overhead of transmitting reference signals and feeding back CSI information.

[0226] In some embodiments, step 1020 may be implemented as step 1022. Optionally, in addition to step 1022, the method for acquiring channel state information may further include step 1012, as shown in FIG11 . FIG11 is 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 second node shown in FIG10 , and the method including:

[0227] Step 1012: Receive first information, where the first information includes instruction information and / or configuration information from other nodes;

[0228] The other nodes include nodes other than the second node.

[0229] In some embodiments, the first information includes at least one of the following information: the sending period of the first signal; the time domain resources corresponding to the first signal; the frequency domain resources corresponding to the first signal; the sequence corresponding to the first signal; the modulation method of the first signal; and the encoding method of the first signal.

[0230] For the relevant content of the first information, please refer to step 722 and will not be repeated here.

[0231] In some embodiments, the other nodes include a first node, the second node receives the first information from the first node, and the first node can be implemented as a network device (such as the network device shown in Figure 1 or Figure 2 or Figure 3) or a terminal device (such as the terminal device shown in Figure 1 or Figure 2 or Figure 3).

[0232] In some embodiments, the other nodes do not include the first node, the second node receives the first information from the other nodes, and the other nodes can be implemented as network devices (network devices as shown in Figure 1 or Figure 2 or Figure 3) or terminal devices (terminal devices as shown in Figure 1 or Figure 2 or Figure 3).

[0233] Step 1022: Send a first signal to the first node, and a measurement result of the first signal is used to obtain a first CSI between the first node and the second node.

[0234] In some embodiments, the second node sends a first signal to the first node based on first information, wherein the first information includes indication information and / or configuration information from other nodes, and the other nodes include nodes other than the second node.

[0235] In some embodiments, the first signal carries at least one of the following information: location information indicating the location of the second node; beam information indicating the beam used by the second node to transmit the first signal; and frequency domain resource information indicating the frequency domain resource used by the second node to transmit the first signal. The location information may indicate the absolute and / or relative location of the second node.

[0236] 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 position information can indicate the absolute position of the second node by latitude and longitude or coordinates.

[0237] In some embodiments, the relative position refers to the position relative to a reference point, which may be a first node or another node. The relative position is also referred to as a relative geographic location. For example, the position information may indicate the relative position of the second node by coordinates, or the position information may indicate the relative position of the second node by a latitude and longitude offset value relative to the reference point. For example, the reference point is the first node, and within the cell corresponding to the first node, several areas are divided with the first node as the reference point, and the relative position of the second node is indicated by the area number.

[0238] The location information carried by the first signal can be used by the first node to obtain the channel status or channel quality from the second node at different locations to the first node, so that the first node can clearly understand the differences or correlations between the channels corresponding to the second nodes.

[0239] The beam information carried by the first signal can be used by the first node to obtain the channel status or channel quality from the second node located in different directions to the first node, so that the first node can clearly understand the differences or correlations between the channels corresponding to each beam direction.

[0240] The frequency domain resource information carried by the first signal can be used by the first node to perform frequency offset estimation, which is beneficial to improving the reception quality and measurement accuracy of the first signal.

[0241] The second node is the sender of the first signal. Exemplarily, in a downlink scenario, the sender refers to a network device (such as the network device shown in Figure 1, Figure 2, or Figure 3); in an uplink scenario, the sender refers to a terminal device (such as the terminal device shown in Figure 1, Figure 2, or Figure 3); in a sidelink scenario, the sender refers to a first terminal device (such as the terminal device shown in Figure 1, Figure 2, or Figure 3).

[0242] For the relevant content of the second node, please refer to step 720 and will not be repeated here.

[0243] For the relevant content of the first CSI and the first node, please refer to the previous text and will not be repeated here.

[0244] In some embodiments, the first node also includes a low power consumption terminal or a low power consumption module.

[0245] In some embodiments, the second node further receives a signal and / or data from the first node, where the signal and / or data is sent 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.

[0246] In summary, the method provided in the embodiment of the present application supports obtaining CSI by sending or backscattering the first signal through the second node. Since the second node includes a low-power terminal or a low-power module, the power consumption required for the second node to send the first signal is extremely low, and the energy for the second node to send the first signal comes from environmental energy. In fact, the second node does not need a built-in battery to drive the second node to send the first signal, so that the overall power consumption required to obtain CSI is significantly reduced. Compared with periodically obtaining CSI through a communication device that does not include a low-power terminal or a low-power module, the method provided in the embodiment of the present application not only saves the power consumption of the communication device, but also reduces the resource overhead of transmitting reference signals and feeding back CSI information. In addition, by configuring the parameters for the second node to transmit the first signal through the first information, the efficiency of scheduling the first signal is improved and the resource overhead required for scheduling the first signal is reduced.

[0247] In some embodiments, step 1020 may be implemented as step 1024. Optionally, in addition to step 1024, the method for obtaining channel state information may further include step 1014, as shown in FIG12 . FIG12 is a flow chart of a method for obtaining channel state information provided by an exemplary embodiment of the present application, the method being executed by the second node shown in FIG10 , and the method including:

[0248] Step 1014: Receive a second signal from the first node;

[0249] Step 1024: backscatter the first signal, and the measurement result of the first signal is used to obtain the first CSI between the first node and the second node.

[0250] The first signal is a backscattered signal of the second signal.

[0251] In some embodiments, the first signal carries at least one of the following information: location information indicating the location of the second node; beam information indicating the beam used by the second node to transmit the first signal; and frequency domain resource information indicating the frequency domain resource used by the second node to transmit the first signal. The location information may indicate the absolute and / or relative location of the second node.

[0252] 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 position information can indicate the absolute position of the second node by latitude and longitude or coordinates.

[0253] In some embodiments, the relative position refers to the position relative to a reference point, which may be a first node or another node. The relative position is also referred to as a relative geographic location. For example, the position information may indicate the relative position of the second node by coordinates, or the position information may indicate the relative position of the second node by a latitude and longitude offset value relative to the reference point. For example, the reference point is the first node, and within the cell corresponding to the first node, several areas are divided with the first node as the reference point, and the relative position of the second node is indicated by the area number.

[0254] The location information carried by the first signal can be used by the first node to obtain the channel status or channel quality from the second node at different locations to the first node, so that the first node can clearly understand the differences or correlations between the channels corresponding to the second nodes.

[0255] The beam information carried by the first signal can be used by the first node to obtain the channel status or channel quality from the second node located in different directions to the first node, so that the first node can clearly understand the differences or correlations between the channels corresponding to each beam direction.

[0256] The frequency domain resource information carried by the first signal can be used by the first node to perform frequency offset estimation, which is beneficial to improving the reception quality and measurement accuracy of the first signal.

[0257] The second node is a backscatterer of the first signal. For example, in a downlink scenario, the sender refers to a network device (such as the network device shown in Figure 1, Figure 2, or Figure 3); in an uplink scenario, the sender refers to a terminal device (such as the terminal device shown in Figure 1, Figure 2, or Figure 3); and in a sidelink scenario, the sender refers to a first terminal device (such as the terminal device shown in Figure 1, Figure 2, or Figure 3).

[0258] For the relevant content of the second node, please refer to step 720 and will not be repeated here.

[0259] For the relevant content of the first CSI and the first node, please refer to the previous text and will not be repeated here.

[0260] In some embodiments, the first node also includes a low power consumption terminal or a low power consumption module.

[0261] In summary, the method provided in the embodiment of the present application obtains CSI through the first signal from the second node. Since the second node includes a low-power terminal or a low-power module, and the second node backscatters the first signal without the need for a built-in battery drive of the second node, it can be achieved by only providing a carrier by the first node, so that the overall power consumption required to obtain CSI is significantly reduced. Compared with periodically obtaining CSI through a communication device that does not include a low-power terminal or a low-power module, the method provided in the embodiment of the present application not only saves the power consumption of the communication device, but also reduces the resource overhead of transmitting reference signals and feedback CSI information. Moreover, since there is no need to configure the second node to periodically send the first signal, but the first node sends the second signal to the second node on demand and dynamically to trigger the second node to backscatter the first signal, the flexibility of obtaining CSI is greatly improved, the resource overhead required for scheduling the first signal is reduced, and the waste of resources and power consumption caused by the second node periodically sending the first signal is avoided.

[0262] Taking into account the device types of the first node and the second node, the method for obtaining channel state information provided in this application includes at least the following five cases:

[0263] Case 1: The first node is a network device, the second node is a terminal device, and the second node is a low-power terminal;

[0264] Case 2: The first node is a network device, the second node is a terminal device, and the second node includes a low-power module;

[0265] Case 3: The first node is a terminal device, the second node is a network device, and the second node includes a low-power module;

[0266] Case 4: The first node is a low-power terminal or includes a low-power module, and the second node is a low-power terminal or includes a low-power module, wherein the first node is a terminal device and the second node is a network device, or the first node is a network device and the second node is a terminal device;

[0267] Case 5: The first node is a terminal device, the second node is a terminal device, and the second node is a low-power terminal or includes a low-power module.

[0268] Next, we introduce the methods for obtaining channel state information in five situations respectively.

[0269] Case 1: The first node is a network device, the second node is a terminal device, and the second node is a low-power terminal

[0270] FIG13 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 first node shown in FIG7 and the second node shown in FIG10 . The method includes:

[0271] Step 1302: The first node receives a first signal from a second node, where the second node is a low-power terminal.

[0272] The first signal is sent or backscattered by the second node to the first node.

[0273] For the relevant content of the first signal, please refer to step 722 and will not be repeated here.

[0274] For example, as shown in FIG14 , the first node is network device 141, and the second node includes terminal device 142, terminal device 143, terminal device 144, and terminal device 145. Network device 141 receives first signals from terminal device 142, terminal device 143, terminal device 144, and terminal device 145. Terminal device 142 and terminal device 143 send the first signal to network device 141, and terminal device 144 and terminal device 145 backscatter the first signal.

[0275] In some embodiments, network device 141 sends first information to terminal device 142 and terminal device 143, or network device 141 sends first information to multiple terminal devices including terminal device 142 and terminal device 143. Terminal device 142 and terminal device 143 send a first signal to network device 141 based on the first information.

[0276] In some embodiments, the network device 141 sends a second signal to the terminal device 144 and the terminal device 145 , and the terminal device 144 and the terminal device 145 respectively backscatter the first signal.

[0277] Optionally, the second node is located within the signal coverage of the first node, or the second node belongs to the same cell.

[0278] The second node is a low-power terminal. For example, the second node can be implemented as the terminal device 120 and / or the terminal device 130 as described above.

[0279] Step 1304: The first node obtains first CSI based on the measurement result of the first signal;

[0280] In some embodiments, network device 141 measures the first signals sent by terminal device 142 and terminal device 143, respectively, and obtains measurement results of the first signals. In this case, the first signal passes through the uplink from the terminal device to the network device, and the measurement results of the first signal can reflect the channel quality or channel status of the uplink.

[0281] In some embodiments, network device 141 measures the first signals backscattered by terminal device 144 and terminal device 145, respectively, to obtain measurement results of the first signals. In this case, the second signal passes through the downlink from the network device to the terminal device, and the first signal passes through the uplink from the terminal device to the network device. However, since the first signal is a backscattered signal of the second signal, it can be considered that the measurement results of the first signal can reflect the channel quality or channel status of the downlink and uplink.

[0282] Therefore, through the first signals from several second nodes, the first node can obtain the correspondence between several locations and CSI. When the second node is located at different locations within a cell, the first node can obtain the correspondence between different locations within the cell and CSI. That is, the network device can obtain the channel quality or channel state of the uplink and downlink channels corresponding to each location within the cell. Due to the low-cost advantage of low-power terminals, by deploying low-power terminals to enable network devices to obtain CSI of uplink channels corresponding to different locations, the acquisition cost and maintenance cost of channel state information within the cell are effectively reduced. Moreover, the network device does not need to rely on the traditional terminal measurement reference signal and feedback CSI information method to obtain CSI. Instead, the low-power terminal sends or backscatters the first signal to achieve CSI acquisition. This method significantly reduces the power consumption on the terminal device side due to the low power consumption advantage of the low-power terminal. In addition, the network device can provide the second signal to the low-power terminal on demand and dynamically, allowing the low-power terminal to backscatter the first signal to obtain CSI, thereby improving the flexibility of CSI acquisition within the system and reducing the resource overhead generated by the periodic transmission of reference signals and CSI information.

[0283] Step 1306: The first node determines a second CSI between the first node and the third node based on the first CSI.

[0284] The third node may include the second node or may not include the second node.

[0285] Taking the example of the third node including the second node, the first node obtains first CSI based on the received first signal and determines second CSI based on the first CSI, where the precision and accuracy of the second CSI are superior to those of the first CSI. Optionally, the first CSI represents channel quality within a first time domain range, and the second CSI represents 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.

[0286] Taking the example of a case where the third node does not include the second node, the first node determines the second CSI based on the first CSI, and the channel senders corresponding to the first CSI and the second CSI are different. Exemplarily, the third node is the terminal device 146 shown in FIG14 , and the network device 141 determines the channel quality or channel state of the uplink from the terminal device 146 to the network device 141 based on the first CSI. Since the second CSI corresponding to the third node can be obtained without measuring the first signal from the third node, the power consumption and resource overhead of the third node transmitting the first signal and the first node measuring the first signal from the third node are saved, thereby reducing the overall resource overhead and device power consumption within the communication system and improving the efficiency of obtaining CSI within the communication system.

[0287] In some embodiments, the first node inputs the first CSI into a first AI model, and the first AI model outputs the second CSI.

[0288] In some embodiments, the first node sends a signal and / or data to the second node 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.

[0289] In some embodiments, the first node sends a signal and / or data to the third node 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.

[0290] It should be noted that step 1306 is an optional step.

[0291] In summary, the method provided in the embodiment of the present application obtains CSI through the first signal from the second node. Since the second node is a low-power terminal, the power consumption required for the second node to transmit the first signal is extremely low or even zero, and the complexity of the second node is very low, so that the overall power consumption required for the first node to obtain CSI is significantly reduced and the simplicity is significantly improved. Compared with the method of measuring the reference signal and feeding back CSI information through the traditional terminal, the introduction of the low-power terminal significantly reduces the cost and complexity within the system, and also reduces the power consumption, reference signal and CSI information resource overhead on the terminal side. If the parameters for the second node to transmit the first signal are configured through the first information, the efficiency of scheduling the first signal can be improved and the resource overhead required for scheduling the first signal can be reduced. It also supports the first node to dynamically send the second signal to the second node on demand to trigger the second node to backscatter the first signal, which greatly improves the flexibility of obtaining CSI, reduces the resource overhead required for scheduling the first signal, and avoids the waste of resources and power consumption caused by the second node periodically sending the first signal.

[0292] Case 2: The first node is a network device, the second node is a terminal device, and the second node includes a low-power module

[0293] FIG15 is a flow chart showing a method for acquiring channel state information provided by an exemplary embodiment of the present application. The method is performed by the first node shown in FIG7 and the second node shown in FIG10 . The method includes:

[0294] Step 1502: The first node receives a first signal from the second node, where the second node includes a low power consumption module;

[0295] The first signal is sent or backscattered by the second node to the first node.

[0296] For the relevant content of the first signal, please refer to step 722 and will not be repeated here.

[0297] For example, as shown in FIG16 , the first node is a network device 161, and the second node includes a terminal device 162, a terminal device 163, a terminal device 164, and a terminal device 165. Network device 161 receives a first signal from terminal devices 162, 163, 164, and 165. Terminal devices 162 and 163 send the first signal to network device 161, and terminal devices 164 and 165 backscatter the first signal.

[0298] In some embodiments, network device 161 sends first information to terminal device 162 and terminal device 163, or network device 161 sends first information to multiple terminal devices including terminal device 162 and terminal device 163. Terminal device 162 and terminal device 163 send a first signal to network device 161 based on the first information.

[0299] In some embodiments, the network device 161 sends a second signal to the terminal device 164 and the terminal device 165 , and the terminal device 164 and the terminal device 165 respectively backscatter the first signal.

[0300] Optionally, the second node is located within the signal coverage of the first node, or the second node belongs to the same cell.

[0301] The second node is a terminal including a low-power module 1601. In other words, the low-power module 1601 is part of the second node, and therefore the second node also has low-power communication capabilities. The low-power module performs the transmission or backscattering of the first signal by the second node, and therefore, the power consumption required by the second node to transmit the first signal is extremely low or even zero.

[0302] Step 1504: The first node obtains first CSI based on the measurement result of the first signal;

[0303] In some embodiments, network device 161 measures the first signals sent by terminal device 162 and terminal device 163, respectively, to obtain measurement results of the first signals. In this case, the first signal passes through the uplink from the terminal device to the network device, and the measurement results of the first signal can reflect the channel quality or channel status of the uplink.

[0304] In some embodiments, network device 161 measures the first signals backscattered by terminal device 164 and terminal device 165, respectively, to obtain measurement results of the first signals. In this case, the second signal passes through the downlink from the network device to the terminal device, and the first signal passes through the uplink from the terminal device to the network device. However, since the first signal is the backscattered signal of the second signal, it can be considered that the measurement results of the first signal can reflect the channel quality or channel status of the downlink and uplink.

[0305] Therefore, through the first signals from several second nodes, the first node can obtain the correspondence between several locations and CSI. When the second nodes are located at different locations within a cell, the first node can obtain the correspondence between different locations within the cell and CSI. That is, the network device can obtain the channel quality or channel status of the uplink and downlink channels corresponding to each location within the cell. Due to the low cost advantage of low-power modules, by introducing low-power modules to enable network devices to obtain CSI for uplink and downlink channels corresponding to different locations, the acquisition cost and maintenance cost of channel state information within the cell are effectively reduced. Furthermore, the network device does not need to rely on the traditional method of measuring reference signals and feeding back CSI information by terminals. Instead, CSI is acquired by the low-power terminal sending or backscattering the first signal. This method significantly reduces the power consumption of the terminal device side due to the low power consumption advantage of the low-power terminal. In addition, because the network device can provide the second signal to the low-power terminal on demand and dynamically, the low-power terminal backscatters the first signal to obtain CSI, which improves the flexibility of CSI acquisition within the system and reduces the resource overhead generated by the periodic transmission of reference signals and CSI information.

[0306] Step 1506: The first node determines a second CSI between the first node and the third node based on the first CSI.

[0307] The third node may include the second node or may not include the second node.

[0308] Taking the example of the third node including the second node, the first node obtains first CSI based on the received first signal and determines second CSI based on the first CSI, where the precision and accuracy of the second CSI are superior to those of the first CSI. Optionally, the first CSI represents channel quality within a first time domain range, and the second CSI represents 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.

[0309] Taking the example of a case where the third node does not include the second node, the first node determines the second CSI based on the first CSI, and the first CSI and the second CSI correspond to different channel senders. Exemplarily, the third node is terminal device 166 shown in FIG16 , and network device 161 determines the channel quality or channel state of the uplink from terminal device 166 to network device 161 based on the first CSI. Since the second CSI corresponding to the third node can be obtained without measuring the first signal from the third node, the power consumption and resource overhead of the third node transmitting the first signal and the first node measuring the first signal from the third node are saved, thereby reducing the overall resource overhead and device power consumption within the communication system and improving the efficiency of obtaining CSI within the communication system.

[0310] In some embodiments, the first node inputs the first CSI into a first AI model, and the first AI model outputs the second CSI.

[0311] In some embodiments, the first node sends a signal and / or data to the second node 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.

[0312] In some embodiments, the first node sends a signal and / or data to the third node 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.

[0313] Since the low-power module is part of the second node, when the first node schedules the second node to perform uplink or downlink transmission, it is not necessary to consider the positional relationship between the low-power module and the second node, but can directly transmit according to the first CSI, so that the CSI based on which the second node performs uplink or downlink transmission is more direct and accurate. In other words, compared to the case where the second node is distinguished from the traditional terminal as a low-power terminal as shown in Figure 14, the second node including the low-power module shown in Figure 16 has the communication functions of both the low-power terminal and the traditional terminal. When the network device wants to schedule the traditional terminal for transmission, it is not necessary to consider the CSI error caused by the position distance between the traditional terminal and the low-power terminal. The first CSI obtained by the first signal transmitted by the low-power module can be directly used to schedule the second node as a traditional terminal for uplink and downlink transmission, so that the second node implements the communication function of the traditional terminal based on direct and accurate CSI.

[0314] It should be noted that step 1506 is an optional step.

[0315] In summary, the method provided in the embodiment of the present application obtains CSI through the first signal from the second node. Since the second node includes a low-power module, the power consumption required for the low-power module in the second node to transmit the first signal is extremely low or even zero, and the complexity of the low-power module is very low, so that the overall power consumption required for the first node to obtain CSI is significantly reduced and the simplicity is significantly improved. Compared with the method of measuring the reference signal and feeding back CSI information through the traditional terminal, the introduction of the low-power module significantly reduces the cost and complexity within the system, and also reduces the power consumption, reference signal and CSI information resource overhead on the terminal side. If the parameters of the second node transmitting the first signal are configured through the first information, the efficiency of scheduling the first signal can be improved and the resource overhead required for scheduling the first signal can be reduced. It also supports the first node to dynamically send the second signal to the second node on demand to trigger the second node to backscatter the first signal, which greatly improves the flexibility of obtaining CSI, reduces the resource overhead required for scheduling the first signal, and avoids the waste of resources and power consumption caused by the second node periodically sending the first signal.

[0316] Case 3: The first node is a terminal device, the second node is a network device, and the second node includes a low-power module

[0317] FIG17 is a schematic 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 first node shown in FIG7 and the second node shown in FIG10 . The method includes:

[0318] Step 1702: The first node receives a first signal from the second node, where the second node includes a low power consumption module;

[0319] The first signal is sent or backscattered by the second node to the first node.

[0320] For the relevant content of the first signal, please refer to step 722 and will not be repeated here.

[0321] 18 , the first node includes terminal devices 182, 183, 184, and 185, and the second node is network device 181. Network device 181 sends a first signal to terminal devices 182 and 183, and backscatters the first signal to terminal devices 184 and 185.

[0322] In some embodiments, the network device 181 sends a first signal to the terminal device 182 and the terminal device 183 based on the first information.

[0323] In some embodiments, terminal device 184 and terminal device 185 send a second signal to network device 181 , and network device 181 backscatters the first signal to terminal device 184 and terminal device 185 , respectively.

[0324] Optionally, the first node is located within the signal coverage of the second node, or the first nodes belong to the same cell.

[0325] The second node is a network device that includes a low-power module 1801. In other words, the low-power module 1801 is part of the second node, and therefore, the second node also has low-power communication capabilities. The low-power module performs the transmission or backscattering of the first signal by the second node, so the power consumption required by the second node to transmit the first signal is extremely low or even zero.

[0326] Step 1704: The first node obtains first CSI based on the measurement result of the first signal;

[0327] In some embodiments, terminal device 182 and terminal device 183 each measure the received first signal to obtain a measurement result of the first signal. In this case, the first signal passes through a downlink from the network device to the terminal device, and the measurement result of the first signal can reflect the channel quality or channel status of the downlink.

[0328] In some embodiments, terminal device 184 and terminal device 185 each measure the received first signal to obtain a measurement result of the first signal. In this case, the second signal passes through the uplink from the terminal device to the network device, and the first signal passes through the downlink from the network device to the terminal device. However, since the first signal is a backscattered signal of the second signal, it can be considered that the measurement result of the first signal can reflect the channel quality or channel status of the uplink and downlink.

[0329] Therefore, several first nodes can obtain the correspondence between several locations and CSI via the first signal from the second node. When the first nodes are located at different locations within a cell, they can obtain the correspondence between different locations within the cell and CSI. In other words, they can obtain the channel quality or channel status of the uplink and downlink channels corresponding to each location within the cell. Due to the low cost advantage of low-power modules, by introducing low-power modules to obtain CSI for uplink and downlink channels corresponding to different locations, the cost of obtaining and maintaining channel status information within the cell is effectively reduced.

[0330] If the terminal device reports the first CSI obtained by measuring the first signal to the network device, it is beneficial for the network device to adopt a more reasonable method and resource scheduling of the terminal device for uplink and downlink transmission based on the first CSI fed back by the terminal device.

[0331] If the terminal device does not report the first CSI obtained by measuring the first signal to the network device, resource overhead for feeding back the CSI can be reduced. The terminal device can directly perform scheduling-free uplink transmission based on the first CSI, such as configured grant transmission.

[0332] Moreover, the terminal device does not need to rely on the traditional network device's method of measuring reference signals and feeding back CSI information to obtain CSI. Instead, the terminal device acquires CSI by sending or backscattering a first signal through the network device's low-power module. This method significantly reduces the power consumption on the network device side due to the low-power advantage of the low-power module, and the terminal device can provide the low-power module with a second signal on demand and dynamically, allowing the low-power module to backscatter the first signal to obtain CSI, thereby improving the flexibility of CSI acquisition within the system and reducing the resource overhead of the network device scheduling the terminal device to obtain CSI.

[0333] The network device may transmit or backscatter the first signal periodically. In this case, the periodic transmission of the first signal may be implemented based on the configuration of the network device itself, so that the channel state information between the network device and the terminal device is periodically acquired, updated, and maintained within the system.

[0334] The network device may also transmit or backscatter the first signal aperiodically. In this case, the aperiodic transmission of the first signal can be achieved based on the network device's own semi-static configuration or based on the dynamic triggering of the second signal. This can significantly reduce the resource overhead of the network device scheduling terminal devices to obtain CSI and reduce the resource overhead caused by the periodic feedback of CSI information.

[0335] Step 1706: The first node determines a second CSI between the first node and the third node based on the first CSI.

[0336] The third node may include the second node or may not include the second node.

[0337] Taking the example of the third node including the second node, the first node obtains first CSI based on the received first signal and determines second CSI based on the first CSI, where the precision and accuracy of the second CSI are superior to those of the first CSI. Optionally, the first CSI represents channel quality within a first time domain range, and the second CSI represents 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.

[0338] In some embodiments, the first node inputs the first CSI into a first AI model, and the first AI model outputs the second CSI.

[0339] In some embodiments, the first node sends a signal and / or data to the second node 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.

[0340] In some embodiments, the first node sends a signal and / or data to the third node 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.

[0341] Because the low-power module is part of the second node, when uplink or downlink transmission is performed between the first node and the second node, there is no need to consider the positional relationship between the low-power module and the second node. Instead, transmission can be performed directly based on the first CSI, making the CSI used by the second node for uplink or downlink transmission more direct and accurate. In other words, the second node including the low-power module has the communication functions of both the low-power module and a traditional network device. When the network device 181 wants to implement the communication function of a traditional network device, there is no need to consider the CSI error caused by the position distance. The first CSI obtained by the first signal transmitted by the low-power module can be directly used to perform uplink and downlink transmission as a traditional network device, so that the second node can implement the communication function of the traditional network device based on direct and accurate CSI.

[0342] It should be noted that step 1706 is an optional step.

[0343] In summary, the method provided in the embodiment of the present application obtains CSI through the first signal from the second node. Since the second node includes a low-power module, the power consumption required for the low-power module in the second node to transmit the first signal is extremely low or even zero, and the complexity of the low-power module is very low, so that the overall power consumption required for the first node to obtain CSI is significantly reduced and the simplicity is significantly improved. Compared with the traditional method of measuring reference signals and feeding back CSI information, the introduction of low-power modules significantly reduces the cost and complexity within the system, and also reduces the power consumption, reference signals and CSI information resource overhead on the terminal side. Moreover, in the case where the second node is a network device including a low-power module, the method provided in the embodiment of the present application is particularly suitable for terminal devices to perform scheduling-free uplink transmission. The terminal device can autonomously, dynamically and flexibly obtain CSI through the first signal, and then adopt appropriate transmission parameters based on the CSI.

[0344] Case 4: The first node is a low-power terminal or includes a low-power module, and the second node is a low-power terminal or includes a low-power module, wherein the first node is a terminal device and the second node is a network device, or the first node is a network device and the second node is a terminal device

[0345] Case 4 can be considered a combination of the embodiment shown in Figure 13 and the embodiment shown in Figure 17, or a combination of the embodiment shown in Figure 15 and the embodiment shown in Figure 17. In other words, both the network device and the terminal device can obtain the first CSI using the first signal from each other. The specific steps can be referred to the embodiments shown in Figures 13, 15, and 17, and will not be repeated here.

[0346] Exemplarily, as shown in FIG19 , the first node includes terminal device 192 , terminal device 193 , terminal device 194 , and terminal device 195 , and the second node is network device 191 .

[0347] Network device 191 can send a first signal to terminal device 192 and terminal device 193, and backscatter the first signal to terminal device 194 and terminal device 195, so that terminal device 192, terminal device 193, terminal device 194, and terminal device 195 obtain the CSI corresponding to the downlink based on the first signal.

[0348] In some embodiments, the network device 191 sends a first signal to the terminal device 192 and the terminal device 193 based on the first information.

[0349] In some embodiments, terminal device 194 and terminal device 195 send a second signal to network device 191 , and network device 191 backscatters the first signal to terminal device 194 and terminal device 195 , respectively.

[0350] The network device 191 may also receive the first signal sent by the terminal device 192 and the terminal device 193, and receive the first signal backscattered by the terminal device 194 and the terminal device 195, so that the network device 191 may obtain the CSI corresponding to the uplink.

[0351] In some embodiments, terminal device 192 and terminal device 193 send a first signal to network device 191 based on the first information.

[0352] In some embodiments, network device 191 sends a second signal to terminal device 194 and terminal device 195 , and terminal device 194 and terminal device 195 respectively backscatter the first signal.

[0353] Optionally, terminal device 192, terminal device 193, terminal device 194, and terminal device 195 are located within the signal coverage of network device 191, or terminal device 192, terminal device 193, terminal device 194, and terminal device 195 belong to the same cell.

[0354] Therefore, by transmitting the first signal between the network device and several terminal devices, the correspondence between several locations and CSI can be obtained. When several terminal devices are located at different locations within a cell, the correspondence between different locations within the cell and CSI can be obtained, that is, the channel quality or channel status of the uplink and downlink channels corresponding to each location in the cell can be obtained. Due to the low-cost advantage of low-power modules or low-power terminals, by introducing low-power modules or low-power terminals to obtain the CSI of the uplink and downlink channels corresponding to different locations, the acquisition cost and maintenance cost of the channel status information within the cell are effectively reduced.

[0355] If the terminal device reports the first CSI obtained by measuring the first signal to the network device, it is beneficial for the network device to adopt a more reasonable method and resource scheduling of the terminal device for uplink and downlink transmission based on the first CSI fed back by the terminal device.

[0356] If the terminal device does not report the first CSI obtained by measuring the first signal to the network device, the resource overhead of feeding back the CSI can be reduced. The terminal device can directly perform scheduling-free uplink transmission based on the first CSI, such as configuring authorized transmission.

[0357] Furthermore, neither terminal devices nor network devices need to rely on the traditional method of measuring reference signals and feeding back CSI information to obtain CSI. Instead, CSI is acquired through low-power modules or low-power terminals. This method significantly reduces power consumption within the communication system due to its low power advantage. Furthermore, terminal devices and network devices can dynamically provide each other with a second signal on demand, allowing the low-power module to backscatter the first signal to obtain CSI. This improves the flexibility of CSI acquisition within the system and reduces the resource overhead of network devices scheduling terminal devices to obtain CSI.

[0358] The second node may transmit or backscatter the first signal periodically. In this case, the periodic transmission of the first signal may be implemented based on the configuration of the network device or other nodes, so that the channel state information between the network device and the terminal device is periodically acquired, updated, and maintained within the system.

[0359] The second node may also transmit or backscatter the first signal aperiodically. In this case, aperiodic transmission of the first signal can be achieved based on semi-static configuration of the network device or other nodes, or based on dynamic triggering of the second signal. This can significantly reduce the resource overhead of the network device scheduling terminal devices to obtain CSI, and reduce the resource overhead caused by periodic feedback of CSI information.

[0360] The network device may also determine the second CSI based on the first CSI. For details, refer to step 1306 or step 1506, which will not be repeated here.

[0361] In some embodiments, the network sends a signal and / or data to the terminal device 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.

[0362] In some embodiments, the network sends a signal and / or data to the terminal device 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.

[0363] In summary, according to the method provided in the embodiment of the present application, both the first node and the second node can obtain CSI through the first signal from the other party. Since both the first node and the second node have the characteristics of low power consumption, the power consumption required to transmit the first signal is extremely low or even zero, so that the overall power consumption required to obtain CSI in the communication system is significantly reduced. Compared with the traditional method of measuring reference signals and feeding back CSI information, the introduction of low-power modules or low-power terminals significantly reduces the cost and complexity within the system, and also reduces the power consumption on the terminal side, the power consumption on the network device side, and the resource overhead of reference signals and CSI information.

[0364] The effects that can be achieved by the embodiments shown in FIG. 13 , FIG. 15 , and FIG. 17 can also be achieved by the embodiment shown in FIG. 19 .

[0365] Case 5: The first node is a terminal device, the second node is a terminal device, and the second node is a low-power terminal or includes a low-power module

[0366] FIG20 is a schematic 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 first node shown in FIG7 and the second node shown in FIG10 . The method includes:

[0367] Step 2002: A first node receives a first signal from a second node, where the second node is a low-power terminal or includes a low-power module;

[0368] The first signal is sent or backscattered by the second node to the first node.

[0369] For the relevant content of the first signal, please refer to step 722 and will not be repeated here.

[0370] For example, as shown in FIG21 , the first nodes are terminal devices 211 and 212, and the second nodes include terminal devices 213, 214, and 215. Terminal device 211 receives the first signal backscattered by terminal device 213, terminal device 212 receives the first signal backscattered by terminal device 214, and terminal device 213 receives the first signal sent by terminal device 215.

[0371] In some embodiments, the network device 216 sends the first information to the terminal device 215, or the network device 216 sends the first information to a plurality of terminal devices including the terminal device 215. The terminal device 215 sends a first signal to the terminal device 212 based on the first information.

[0372] In some embodiments, terminal device 211 sends a second signal to terminal device 213, and terminal device 213 backscatters the first signal. Terminal device 212 sends a second signal to terminal device 214, and terminal device 214 backscatters the first signal.

[0373] Optionally, the first node and the second node belong to the same cell, or are located within the signal coverage of the same base station.

[0374] Step 2004: The first node obtains first CSI based on the measurement result of the first signal;

[0375] In some embodiments, terminal device 211 measures the first signal backscattered by terminal device 213 to obtain a measurement result of the first signal. In this case, the second signal passes through the first sidelink from terminal device 211 to terminal device 213, and the first signal passes through the second sidelink from terminal device 213 to terminal device 211. However, since the first signal is a backscattered signal of the second signal, it can be considered that the measurement result of the first signal can reflect the channel quality or channel status of the first sidelink and the second sidelink.

[0376] In some embodiments, terminal device 212 measures the first signal backscattered by terminal device 214 to obtain a measurement result of the first signal. In this case, the second signal passes through the first sidelink from terminal device 212 to terminal device 214, and the first signal passes through the second sidelink from terminal device 214 to terminal device 212. However, since the first signal is a backscattered signal of the second signal, it can be considered that the measurement result of the first signal can reflect the channel quality or channel status of the first sidelink and the second sidelink.

[0377] In some embodiments, terminal device 212 measures the first signal sent by terminal device 215 and obtains a measurement result of the first signal. In this case, the first signal passes through the second sidelink from terminal device 215 to terminal device 211, and the measurement result of the first signal can reflect the channel quality or channel status of the sidelink.

[0378] Therefore, by transmitting the first signal between several second nodes and the first node, the correspondence between several locations and CSI can be obtained. When the second node and the second node are located at different locations within a cell, the correspondence between different locations within the cell and CSI can be obtained. In other words, the channel quality or channel status of the side channel corresponding to each location within the cell can be obtained. Due to the low cost advantage of low-power terminals / low-power modules, by deploying low-power terminals / low-power modules to obtain CSI for side channels corresponding to different locations, the cost of obtaining and maintaining channel status information within the cell is effectively reduced.

[0379] It should be noted that, similar to the embodiment shown in FIG19 , the first node can also be a low-power terminal or include a low-power module. Therefore, both the first node and the second node can obtain CSI using the first signal from each other. Because both the first node and the second node have low power consumption characteristics, the power consumption required to transmit the first signal is extremely low or even zero, significantly reducing the overall power consumption required to obtain CSI within the communication system.

[0380] It supports the first node and the second node to transmit the first signal based on the first information, thereby improving the efficiency of scheduling the first signal and reducing the resource overhead required for scheduling the first signal; it also supports the first node and the second node to provide the second signal to each other on demand and dynamically, so that the other party backscatters the first signal to obtain CSI, thereby improving the flexibility of CSI acquisition within the system and reducing the resource overhead generated by periodic transmission of reference signals and CSI information.

[0381] Step 2006: The first node determines a second CSI between the first node and the third node based on the first CSI.

[0382] The third node may include the second node or may not include the second node.

[0383] Taking the example of the third node including the second node, the first node obtains first CSI based on the received first signal and determines second CSI based on the first CSI, where the precision and accuracy of the second CSI are superior to those of the first CSI. Optionally, the first CSI represents channel quality within a first time domain range, and the second CSI represents 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.

[0384] For example, in which the third node does not include the second node, the first node determines the second CSI based on the first CSI. The first and second CSI correspond to different channel transmitters. Because the second CSI corresponding to the third node can be obtained without measuring the first signal from the third node, the power consumption and resource overhead of the third node transmitting the first signal and the first node measuring the first signal from the third node are reduced. This reduces overall resource overhead and device power consumption within the communication system, and improves the efficiency of CSI acquisition within the communication system.

[0385] In some embodiments, the first node inputs the first CSI into a first AI model, and the first AI model outputs the second CSI.

[0386] It should be noted that step 2006 is an optional step.

[0387] In some embodiments, the first node sends a signal and / or data to the second node 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.

[0388] In some embodiments, the first node sends a signal and / or data to the third node 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.

[0389] In some embodiments, the first node further reports the first CSI and / or the second CSI to the network device, so that the network device can understand the channel quality or channel status of each sidelink channel in the cell. Optionally, the network device configures a resource pool for the first node and the second node based on the first CSI and / or the second CSI reported by the first node, so that the first node and the second node use appropriate resources for sidelink transmission.

[0390] In summary, the method provided in the embodiment of the present application obtains the CSI of the side channel through the first signal. Since the second node is a low-power terminal or includes a low-power module, the power consumption required for the second node to transmit the first signal is extremely low or even zero, so that the overall power consumption required for the first node to obtain CSI is significantly reduced. When the first node is also a low-power terminal or includes a low-power module, both the first node and the second node can obtain CSI through the first signal from each other, so that the overall power consumption required to obtain CSI in the communication system is further reduced. Compared with the traditional method of measuring reference signals and feeding back CSI information, the introduction of low-power modules or low-power terminals significantly reduces the cost and complexity within the system, and also reduces the power consumption on the terminal side, as well as the resource overhead of reference signals and CSI information.

[0391] Figure 22 shows a block diagram of a device for acquiring channel state information, provided in an exemplary embodiment of the present application. This device can be implemented as a first node as shown in Figure 7, Figure 8, or Figure 9, or as a portion of a first node as shown in Figure 7, Figure 8, or Figure 9. The first node can be a network device as shown in Figure 1, Figure 2, or Figure 3, or a terminal device as shown in Figure 1, Figure 2, or Figure 3. The device includes a receiving module 2210 and a processing module 2230. Optionally, the device also includes a sending module 2250.

[0392] A receiving module 2210 is configured to receive a first signal from a second node, where the second node includes a low-power consumption terminal or a low-power consumption module;

[0393] The processing module 2230 is configured to obtain first channel state information CSI between the apparatus and the second node based on the measurement result of the first signal.

[0394] In some embodiments, the first signal is sent by the second node to the apparatus.

[0395] In some embodiments, the first signal is sent by the second node to the device based on the first information;

[0396] The first information includes indication information and / or configuration information from other nodes, and the other nodes include nodes other than the second node.

[0397] In some embodiments, the first information includes at least one of the following information: a sending period of the first signal; time domain resources corresponding to the first signal; frequency domain resources corresponding to the first signal; a sequence corresponding to the first signal; a modulation method of the first signal; and an encoding method of the first signal.

[0398] In some embodiments, the first signal is backscattered by the second node.

[0399] In some embodiments, the apparatus further includes a sending module 2250 configured to send a second signal to the second node, wherein the first signal is a backscattered signal of the second signal.

[0400] In some embodiments, the first signal carries at least one of the following information:

[0401] location information, used to indicate the location of the second node;

[0402] Beam information, used to indicate a beam used by the second node to backscatter the first signal;

[0403] Frequency domain resource information is used to indicate the frequency domain resources used by the second node to send or backscatter the first signal.

[0404] In some embodiments, the processing module 2230 is further configured to determine a second CSI based on the first CSI;

[0405] The second CSI is CSI between the device and a third node, and the third node includes a node other than the device.

[0406] In some embodiments, the processing module 2230 is further configured to input the first CSI into a first AI model to obtain the second CSI.

[0407] In some embodiments, the sending module 2250 is further configured to send a signal and / or data based on the first CSI; and / or send a signal and / or data based on the second CSI;

[0408] The second CSI is CSI between the device and a third node, and the third node includes a node other than the device.

[0409] In some embodiments, the apparatus comprises a low power consumption terminal or a low power consumption module.

[0410] In summary, the apparatus provided in the embodiments of the present application obtains CSI using a first signal from a second node. Because the second node includes a low-power terminal or a low-power module, the power consumption required for the second node to transmit the first signal is extremely low or even zero, significantly reducing the overall power consumption required to obtain CSI. Compared to periodically obtaining CSI through a communication device that does not include a low-power terminal or a low-power module, the method provided in the embodiments of the present application not only saves power consumption of the communication device, but also reduces the resource overhead of transmitting reference signals and feeding back CSI information.

[0411] Figure 23 shows a block diagram of a device for acquiring channel state information, provided in an exemplary embodiment of the present application. This device can be implemented as a second node as shown in Figures 10, 11, or 12, or as part of a second node as shown in Figures 10, 11, or 12. The second node can be a network device as shown in Figures 1, 2, or 3, or a terminal device as shown in Figures 1, 2, or 3. The device includes a sending module 2310. Optionally, the device also includes a receiving module 2330.

[0412] a sending module 2310, configured to send or backscatter a first signal, wherein a measurement result of the first signal is used to obtain first channel state information CSI between the first node and the apparatus;

[0413] Wherein, the device includes a low-power consumption terminal or a low-power consumption module.

[0414] In some embodiments, the sending module 2310 is further configured to send the first signal to the first node based on the first information;

[0415] The first information includes instruction information and / or configuration information from other nodes, and the other nodes include nodes other than the device.

[0416] In some embodiments, the first information includes at least one of the following information: a sending period of the first signal; time domain resources corresponding to the first signal; frequency domain resources corresponding to the first signal; a sequence corresponding to the first signal; a modulation method of the first signal; and an encoding method of the first signal.

[0417] In some embodiments, the apparatus further includes a receiving module 2330 configured to receive a second signal sent by the first node, where the first signal is a backscattered signal of the second signal.

[0418] In some embodiments, the first signal carries at least one of the following information:

[0419] Location information, used to indicate the location of the device;

[0420] Beam information, used to indicate a beam used by the device to backscatter the first signal;

[0421] Frequency domain resource information is used to indicate the frequency domain resources used by the device to send or backscatter the first signal.

[0422] In some embodiments, the receiving module 2330 is further used to: receive signals and / or data from the first node, wherein the signals and / or data are sent based on the first CSI; and / or receive signals and / or data from the first node, wherein the signals and / or data are sent based on a second CSI, wherein the second CSI is the CSI between the first node and a third node.

[0423] In some embodiments, the first node includes a low power consumption terminal or a low power consumption module.

[0424] In summary, the device provided in the embodiment of the present application supports obtaining CSI by sending or backscattering a first signal. Since the device provided in the embodiment of the present application includes a low-power terminal or a low-power module, the power consumption required to transmit the first signal is extremely low, and the energy for transmitting the first signal comes from environmental energy. In fact, the transmission of the first signal does not require a built-in battery drive of the device, so that the overall power consumption required to obtain CSI is significantly reduced. Compared with periodically obtaining CSI through a communication device that does not include a low-power terminal or a low-power module, the device provided in the embodiment of the present application saves power consumption and reduces the resource overhead of transmitting reference signals and feeding back CSI information. Moreover, by configuring the transmission parameters of the first signal through the first information, the efficiency of scheduling the first signal is improved and the resource overhead required for scheduling the first signal is reduced.

[0425] Figure 24 shows a schematic structural diagram of a communication device 2400 provided by an exemplary embodiment of the present application, including a processor 2401, a receiver 2402, a transmitter 2403, a memory 2404, and a bus 2405. The communication device 2400 may be used to execute at least some of the steps executed by the first node shown in Figure 7, Figure 8, or Figure 9, or may be used to execute at least some of the steps executed by the second node shown in Figure 10, Figure 11, or Figure 12.

[0426] The processor 2401 includes one or more processing cores, and the processor 2401 executes various functional applications and information processing by running software programs and modules. In some embodiments, the processor 2401 can be used to implement the functions and steps of the processing module 2230 described above.

[0427] Receiver 2402 and transmitter 2403 can be implemented as a communication component, which can be a communication chip and is referred to as a transceiver. In some embodiments, receiver 2402 can be used to implement the functions and steps of receiving module 2210 and / or receiving module 2330 described above, and transmitter 2403 can be used to implement the functions and steps of transmitting module 2250 and / or transmitting module 2310 described above. In some embodiments, receiver 2402 includes a backscatter transmitter.

[0428] The memory 2404 is connected to the processor 2401 via a bus 2405 .

[0429] The memory 2404 may be used to store at least one instruction, and the processor 2401 may be used to execute the at least one instruction to implement each step in the above method embodiment.

[0430] In addition, the memory 2404 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).

[0431] In some embodiments, the receiver 2402 receives signals / data independently, or the processor 2401 controls the receiver 2402 to receive signals / data, or the processor 2401 requests the receiver 2402 to receive signals / data, or the processor 2401 cooperates with the receiver 2402 to receive signals / data.

[0432] In some embodiments, the transmitter 2403 independently sends signals / data, or the processor 2401 controls the transmitter 2403 to send signals / data, or the processor 2401 requests the transmitter 2403 to send signals / data, or the processor 2401 cooperates with the transmitter 2403 to send signals / data.

[0433] Figure 25 shows a schematic structural diagram of a communication device 2500 provided by an exemplary embodiment of the present application, including a receiver 2510 and a transmitter 2520. The communication device 2500 may be used to execute at least some of the steps executed by the first node shown in Figure 7, Figure 8, or Figure 9, or may be used to execute at least some of the steps executed by the second node shown in Figure 10, Figure 11, or Figure 12.

[0434] The receiver 2510 and the transmitter 2520 may be implemented as a communication component, which may be a communication chip, and may be referred to as a transceiver.

[0435] In some embodiments, the receiver 2510 may be used to implement the functions and steps of the aforementioned receiving module 2210 and / or receiving module 2330. Optionally, the receiver 2510 may be implemented as a first receiver 2511 and / or a second receiver 2512.

[0436] In some embodiments, the transmitter 2520 may be used to implement the functions and steps of the aforementioned sending module 2250 and / or sending module 2310. Optionally, the transmitter 2520 may be implemented as a first transmitter 2521 and / or a second transmitter 2522.

[0437] Optionally, the communication device 2500 may further include a processor 2530. The processor 2530 includes one or more processing cores. The processor 2530 executes various functional applications and information processing by running software programs and modules. Optionally, the processor 2530 may be used to implement the functions and steps of the processing module 2230 described above.

[0438] Optionally, the communication device 2500 may further include a memory 2540. The memory 2540 may be configured to store at least one instruction, and the processor 2510 may be configured to execute the at least one instruction to implement the various steps in the above-described method embodiment. Furthermore, the memory 2540 may 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 or optical disks, EEPROMs, EPROMs, SRAMs, ROMs, magnetic memories, flash memories, and PROMs.

[0439] Optionally, the communication device 2500 may further include a bus (not shown in the figure). Optionally, the memory 2540 is connected to the processor 2530 via a bus.

[0440] In some embodiments, the receiver 2510 receives signals / data independently, or the processor 2530 controls the receiver 2510 to receive signals / data, or the processor 2530 requests the receiver 2510 to receive signals / data, or the processor 2530 cooperates with the receiver 2510 to receive signals / data.

[0441] In some embodiments, the transmitter 2520 independently sends signals / data, or the processor 2530 controls the transmitter 2520 to send signals / data, or the processor 2530 requests the transmitter 2520 to send signals / data, or the processor 2530 cooperates with the transmitter 2520 to send signals / data.

[0442] In some embodiments, the first receiver 2511 is implemented as a WUR, and / or the second receiver 2512 is implemented as a main receiver.

[0443] In some embodiments, receiver 2510 is implemented as a combined receiver of a WUR and a main receiver.

[0444] In some embodiments, the first transmitter 2521 is implemented as a primary transmitter, and / or the second transmitter 2522 is implemented as a backscatter transmitter.

[0445] In some embodiments, transmitter 2520 is implemented as a combination transmitter of a main transmitter and a backscatter transmitter.

[0446] In some embodiments, the processor 2530 and the receiver 2510 may be implemented as one module, or the processor 2530 may be implemented as a part of the receiver 2510 .

[0447] In some embodiments, the processor 2530 and the transmitter 2520 may be implemented as one module, or the processor 2530 may be implemented as a part of the transmitter 2520 .

[0448] In some embodiments, the communication device 2500 includes one or more processors 2530 , and different processors are configured to execute the same or different steps in the above-mentioned processing-related steps.

[0449] 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.

[0450] 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.

[0451] 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.

[0452] 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.

[0453] 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.

[0454] The above are merely 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 shall 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 first node, and includes: receiving a first signal from a second node, wherein the second node comprises a low power consumption terminal or a low power consumption module; Based on the measurement result of the first signal, first channel state information CSI between the first node and the second node is acquired.

2. The method according to claim 1, characterized in that The first signal is sent by the second node to the first node.

3. The method according to claim 1 or 2, characterized in that: The first signal is sent by the second node to the first node based on the first information; The first information includes indication information and / or configuration information from other nodes, and the other nodes include nodes other than the second node.

4. The method according to claim 3, characterized in that The first information includes at least one of the following information: a sending period of the first signal; The time domain resource corresponding to the first signal; The frequency domain resources corresponding to the first signal; A sequence corresponding to the first signal; a modulation method of the first signal; The encoding method of the first signal.

5. The method according to claim 1 or 2, characterized in that: The first signal is backscattered by the second node.

6. The method according to claim 5, characterized in that Before receiving the first signal from the second node, the method further includes: A second signal is sent to the second node, wherein the first signal is a backscattered signal of the second signal.

7. The method according to any one of claims 1 to 6, characterized in that: The first signal carries at least one of the following information: location information, used to indicate the location of the second node; Beam information, used to indicate a beam used by the second node to backscatter the first signal; Frequency domain resource information is used to indicate the frequency domain resources used by the second node to send or backscatter the first signal.

8. The method according to any one of claims 1 to 7, characterized in that: The method further comprises: Determine second CSI based on the first CSI; The second CSI is CSI between the first node and a third node, and the third node includes nodes other than the first node.

9. The method according to claim 8, characterized in that The determining, based on the first CSI, a second CSI includes: The first CSI is input into a first AI model to obtain the second CSI.

10. The method according to any one of claims 1 to 9, characterized in that: The method further comprises: Based on the first CSI, sending a signal and / or data; and / or, Sending a signal and / or data based on the second CSI; The second CSI is CSI between the first node and a third node, and the third node includes nodes other than the first node.

11. The method according to any one of claims 1 to 10, characterized in that: The first node includes a low power consumption terminal or a low power consumption module.

12. A method for acquiring channel state information, characterized in that: The method is performed by the second node, and the method includes: Sending or backscattering a first signal, where a measurement result of the first signal is used to obtain first channel state information CSI between the first node and the second node; Wherein, the second node includes a low-power consumption terminal or a low-power consumption module.

13. The method according to claim 12, characterized in that The first signal is sent by the second node to the first node based on the first information; The first information includes indication information and / or configuration information from other nodes, and the other nodes include nodes other than the second node.

14. The method according to claim 13, characterized in that The first information includes at least one of the following information: a sending period of the first signal; The time domain resource corresponding to the first signal; The frequency domain resources corresponding to the first signal; A sequence corresponding to the first signal; a modulation method of the first signal; The encoding method of the first signal.

15. The method according to claim 12, characterized in that Before backscattering the first signal, the method further includes: A second signal sent by the first node is received, where the first signal is a backscattered signal of the second signal.

16. The method according to any one of claims 12 to 15, characterized in that: The first signal carries at least one of the following information: location information, used to indicate the location of the second node; Beam information, used to indicate a beam used by the second node to backscatter the first signal; Frequency domain resource information is used to indicate the frequency domain resources used by the second node to send or backscatter the first signal.

17. The method according to any one of claims 12 to 16, characterized in that: The method further comprises: receiving a signal and / or data from the first node, wherein the signal and / or data is sent based on the first CSI; and / or, A signal and / or data is received from the first node, where the signal and / or data is sent based on a second CSI, where the second CSI is CSI between the first node and a third node.

18. The method according to any one of claims 12 to 17, characterized in that: The first node includes a low power consumption terminal or a low power consumption module.

19. A device for acquiring channel state information, characterized in that: The device comprises: A receiving module, configured to receive a first signal from a second node, wherein the second node includes a low-power consumption terminal or a low-power consumption module; The processing module is used to obtain first channel state information CSI between the device and the second node based on the measurement result of the first signal.

20. The device according to claim 19, characterized in that The first signal is sent by the second node to the device.

21. The device according to claim 19 or 20, characterized in that The first signal is sent by the second node to the device based on the first information; The first information includes indication information and / or configuration information from other nodes, and the other nodes include nodes other than the second node.

22. The device according to claim 21, characterized in that The first information includes at least one of the following information: a sending period of the first signal; The time domain resource corresponding to the first signal; The frequency domain resources corresponding to the first signal; A sequence corresponding to the first signal; a modulation method of the first signal; The encoding method of the first signal.

23. The device according to claim 19 or 20, characterized in that The first signal is backscattered by the second node.

24. The device according to claim 23, characterized in that The device also includes a sending module, configured to send a second signal to the second node, wherein the first signal is a backscattered signal of the second signal.

25. The device according to any one of claims 19 to 24, characterized in that The first signal carries at least one of the following information: location information, used to indicate the location of the second node; Beam information, used to indicate a beam used by the second node to backscatter the first signal; Frequency domain resource information is used to indicate the frequency domain resources used by the second node to send or backscatter the first signal.

26. The device according to any one of claims 19 to 25, characterized in that The processing module is further configured to determine a second CSI based on the first CSI; The second CSI is CSI between the device and a third node, and the third node includes a node other than the device.

27. The device according to claim 26, characterized in that The processing module is further configured to input the first CSI into a first AI model to obtain the second CSI.

28. The device according to any one of claims 19 to 27, characterized in that The device also includes a sending module, which is used to: Based on the first CSI, sending a signal and / or data; and / or, Sending a signal and / or data based on the second CSI; The second CSI is CSI between the device and a third node, and the third node includes a node other than the device.

29. The device according to any one of claims 19 to 28, characterized in that The device includes a low power consumption terminal or a low power consumption module.

30. A device for acquiring channel state information, characterized in that: The device comprises: a sending module, configured to send or backscatter a first signal, wherein a measurement result of the first signal is used to obtain first channel state information CSI between the first node and the device; Wherein, the device includes a low-power consumption terminal or a low-power consumption module.

31. The device according to claim 30, characterized in that The sending module is further configured to send the first signal to the first node based on the first information; The first information includes indication information and / or configuration information from other nodes, and the other nodes include nodes other than the device.

32. The device according to claim 31, characterized in that The first information includes at least one of the following information: a sending period of the first signal; The time domain resource corresponding to the first signal; The frequency domain resources corresponding to the first signal; A sequence corresponding to the first signal; a modulation method of the first signal; The encoding method of the first signal.

33. The device according to claim 30, characterized in that The device also includes a receiving module, configured to receive a second signal sent by the first node, where the first signal is a backscattered signal of the second signal.

34. The device according to any one of claims 30 to 33, characterized in that The first signal carries at least one of the following information: location information, used to indicate the location of the second node; Beam information, used to indicate a beam used by the second node to backscatter the first signal; Frequency domain resource information is used to indicate the frequency domain resources used by the second node to send or backscatter the first signal.

35. The device according to any one of claims 30 to 34, characterized in that The device also includes a receiving module, which is used to: receiving a signal and / or data from the first node, wherein the signal and / or data is sent based on the first CSI; and / or, A signal and / or data is received from the first node, where the signal and / or data is sent based on a second CSI, where the second CSI is CSI between the first node and a third node.

36. The device according to any one of claims 30 to 35, characterized in that The first node includes a low power consumption terminal or a low power consumption module.

37. 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 11, or any one of claims 12 to 18.

38. A communication device, characterized in that: The communication device includes: a receiver and / or a transmitter; The communication device is used to implement the method for acquiring channel state information as described in any one of claims 1 to 11, or any one of claims 12 to 18.

39. A computer-readable storage medium, characterized in that: The readable storage medium stores executable instructions, and the executable instructions 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 11, or any one of claims 12 to 18.

40. 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 11, or any one of claims 12 to 18.

41. 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 11, or any one of claims 12 to 18.

42. A computer program, characterized in that The computer program includes computer instructions, and a processor of a computer device executes the computer instructions, so that the computer device executes the method for acquiring channel state information as claimed in any one of claims 1 to 11, or any one of claims 12 to 18.

Images