CN118590348A - Tuning indication method, device and medium - Google Patents

Abstract

The present application discloses a tuning indication method, which belongs to the field of communications. The tuning indication method of an embodiment of the present application includes: a first device sends first information to a second device; the first device receives indication information sent by the second device; wherein the first information is used to determine the indication information; the indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter.

Description

Tuning indication method, device and medium

Technical Field

The present application belongs to the field of communication technology, and specifically relates to a tuning indication method, device and medium.

Background Art

During radio frequency communication, such as backscatter communication (BSC), the antenna impedance and radio frequency circuit impedance of the communication device (e.g., tag) will change with the signal frequency (including carrier frequency and modulation frequency) and environmental parameters (e.g., temperature and humidity), further affecting the impedance matching performance of the communication device and affecting the uplink coverage range or downlink receiving sensitivity.

For example, the input impedance of the antenna radiation unit is a function of the operating frequency, antenna type, antenna size and wireless environment. Its input impedance will change with the changes of the above factors, while the output impedance of the transmitter power stage is relatively unchanged, which will cause impedance mismatch between the transmitter and the antenna, causing part of the transmitter final stage output power sent by the feeder to be reflected back by the antenna, affecting the normal working state of the final stage circuit. The reflected power flows ineffectively on the transmission line, generating additional heat loss on the wire resistance, reducing the radiation efficiency of the system power.

However, existing communication equipment, such as Tag equipment in BSC, usually adopts a fixed matching network, which is easily affected by signal frequency and environmental parameters, resulting in low RF working efficiency, further affecting its uplink coverage and downlink receiving sensitivity.

Summary of the invention

The embodiments of the present application provide a tuning indication method, device and medium, which can solve the problem of low RF working efficiency of the device caused by the existing impedance matching method.

In a first aspect, a tuning indication method is provided, the method comprising:

The first device sends first information to the second device;

The first device receives the indication information sent by the second device;

Among them, the first information is used to determine the indication information; the indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, a tuning parameter and an energy storage parameter.

In a second aspect, a tuning indication method is provided, the method comprising:

The second device receives the first information sent by the first device;

The second device determines indication information according to the first information;

The second device sends the indication information to the first device;

The indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter.

According to a third aspect, a first device is provided, including:

A first sending module, used to send first information to a second device;

A first receiving module, used to receive indication information sent by the second device;

Wherein, the first information is used to determine the indication information;

The indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter.

In a fourth aspect, a second device is provided, including:

A second receiving module, used to receive first information sent by the first device;

A determination module, used to determine indication information according to the first information;

A second sending module, used to send the indication information to the first device;

The indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter.

In a fifth aspect, a first device is provided, which terminal includes a processor and a memory, wherein the memory stores a program or instruction that can be executed on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

In a sixth aspect, a first device is provided, comprising a communication interface, wherein the communication interface is used to send first information to a second device;

receiving indication information sent by the second device;

Wherein, the first information is used to determine the indication information;

The indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, a tuning parameter and an energy storage parameter.

In the seventh aspect, a second device is provided, which network side device includes a processor and a memory, the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the second aspect are implemented.

In an eighth aspect, a second device is provided, comprising a processor and a communication interface, wherein the communication interface is used to receive first information sent by the first device;

The processor is configured to determine indication information according to the first information,

The communication interface is also used to send the indication information to the first device;

The indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter.

In a ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

In the tenth aspect, a wireless communication system is provided, comprising: a first device and a second device, wherein the first device can be used to execute the steps of the method described in the first aspect, and the second device can be used to execute the steps of the method described in the second aspect.

In the eleventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, or to implement the method described in the second aspect.

In the twelfth aspect, a computer program/program product is provided, wherein the computer program/program product is stored in a storage medium, and the program/program product is executed by at least one processor to implement the steps of the tuning indication method as described in the first aspect, or the program/program product is executed by at least one processor to implement the steps of the tuning indication method as described in the second aspect.

In an embodiment of the present application, a tuning indication method is disclosed, which belongs to the field of communication. The tuning indication method of the embodiment of the present application includes: a first device sends first information to a second device; the first device receives the indication information sent by the second device; wherein the first information is used to determine the indication information; the indication information is used to indicate at least one of the following: a tuning matching mode, a tuning object, and a tuning parameter. By configuring the tuning indication of the first device by the second device, the efficiency and flexibility of tuning can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a backscatter communication system;

FIG2 is a schematic diagram of a backscatter communication process;

FIG3 is a schematic diagram of the interaction between a reader and a tag device during backscatter communication;

FIG4 is a schematic diagram of a backscatter communication system architecture;

FIG5 is a schematic diagram of a matching network;

FIG6 is a schematic diagram of the dynamic range of the resistance component and the reactance component of the antenna;

FIG7 is a schematic diagram of an impedance matching process in the prior art;

FIG8 is a flow chart of a tuning indication method provided by an embodiment of the present invention;

FIG9 is a schematic diagram of a tunable matching network provided by an embodiment of the present invention;

FIG10 is a schematic diagram of a first device provided by an embodiment of the present invention;

FIG11 is a schematic diagram of another first device provided by an embodiment of the present invention;

12 is a flowchart of another tuning indication method provided by an embodiment of the present invention;

FIG13 is a schematic diagram of a second device provided by an embodiment of the present invention;

FIG. 14 is a schematic diagram of another second device provided by an embodiment of the present invention.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

The terms "first", "second", etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character "/" generally indicates that the objects associated with each other are in an "or" relationship.

For ease of understanding, some contents involved in the embodiments of the present invention are described below:

During radio frequency communication, such as backscatter communication (BSC), the antenna impedance and radio frequency circuit impedance of the communication device (e.g., tag) will change with the signal frequency (including carrier frequency and modulation frequency) and environmental parameters (e.g., temperature and humidity), further affecting the impedance matching performance of the communication device and affecting the uplink coverage range or downlink receiving sensitivity.

(1) About backscatter communication (BSC) and extremely low power communication.

Backscatter communication refers to the backscatter communication device using the radio frequency signal from other devices or the environment to modulate the signal to transmit its own information. The backscatter communication device can be any of the following:

Traditional RFID (Radio Frequency Identification) backscatter communication devices are generally tags that do not have energy storage capacitors or batteries and are passive IoT (Internet of Things) devices (Passive-IoT)

Semi-passive tags have energy storage capacitors or batteries. Optionally, the downlink reception or uplink backscatter of such tags have a certain amplification capability.

Active tags with active transmission capability. These terminals can send information to the gNB/reader without relying on backscattering of the incident signal.

Exemplarily, part (a) of FIG. 1 is a backscatter communication transmitter, and its basic components and main functions include:

Antenna unit: used to receive RF signals, control commands, and also to send modulated backscattered signals.

Energy harvesting module or power supply module: This module is used for backscatter communication equipment to harvest radio frequency energy or other energy, including but not limited to solar energy, kinetic energy, mechanical energy, thermal energy, etc. In addition to the energy harvesting module, it may also include a battery power supply module. In this case, the backscatter communication device is a semi-passive device. The energy harvesting module or power supply module supplies power to all other modules in the device.

Microcontroller: including control of baseband signal processing, energy storage or data scheduling status, switch switching, system synchronization, etc.

Signal receiving module: used to demodulate control commands or data sent by the backscatter communication receiving end or other network nodes.

Channel coding and modulation module: performs channel coding and signal modulation under the control of the controller, and realizes modulation by selecting different load impedances under the control of the controller through a selection switch;

Memory or sensor module: used to store device ID information, location information or sensor data, etc.

In addition to the typical components mentioned above, future backscatter communication transmitters can even integrate tunnel diode amplifier modules, low-noise amplifier modules, etc. to improve the receiving sensitivity and transmission power of the transmitter.

For example, part (b) of FIG. 1 is a backscatter communication receiving end. The backscatter communication receiving end in a traditional RFID system is a reader, and its basic components and main functions include:

Antenna unit: used to receive the modulated backscattered signal.

Backscatter signal detection module: used to detect the backscatter signal sent by the transmitter, including ASK detection, PSK detection, FSK detection or QAM detection.

Decoding module: decodes the detected signal to restore the original information stream.

The modulation circuit is shown in Figure 2. The backscatter communication device controls the reflection coefficient Γ of the circuit by adjusting its internal impedance, thereby changing the amplitude, frequency, phase, etc. of the incident signal to achieve signal modulation. The reflection coefficient of the signal can be expressed as:

Where _Z0 is the antenna characteristic impedance and _Z1 is the load impedance. Assuming the incident signal is S _in (t), the output signal is Therefore, by properly controlling the reflection coefficient, corresponding amplitude modulation, frequency modulation or phase modulation can be achieved. Based on this, the backscatter communication device can be a tag in traditional RFID, or a passive or semi-passive IoT (Passive/Semi-passive IoT). For convenience, it is collectively referred to as BSC equipment here.

It is worth noting that tags working in extreme environments are generally made of special materials or have special protective covers to avoid damage to the tags in high temperature and high pressure environments. However, the antenna impedance and RF circuit impedance of the tag will still change with changes in environmental parameters and signal frequency.

When the tag performs FSK (Frequency-shift keying) modulation (such as frequency shifting of tens of MHz), RF signals of different frequencies store energy for the tag, the tag crystal oscillator has poor stability, and the tag is used in extreme environments (such as fire warning), it is necessary to consider the tag tuning solution to address problems such as limited uplink coverage and downlink reception sensitivity caused by tag impedance changes.

In addition, the extremely low power communication based on backscatter communication technology will have lower power consumption, cost and speed than LTE (Long-term Evolution) CAT1 to CAT4, eMTC (enhanced Machine-Type Communication) and Narrow Band Internet of Things (NB-IoT), which can help build a sustainable next-generation Internet of Things with extremely low or even zero power consumption, meeting the needs of green energy saving and sustainable development.

The device in the embodiment of the present invention may be an extremely low power consumption communication device.

(2) Information transmission between gNB/reader and tag in RFID

The gNB/reader sends CW (carrier wave) and signaling to the tag; the control type includes at least one of the following: select, inventory, access. The network receives feedback from the tag.

At present, in the protocol of Ultra High Frequency (UHF) RFID, in the inventory mode, the reader selects (select) the tag device, sends a query instruction (Query), and the tag device responds (Relay), that is, generates a 16-bit random number to the reader, and then the reader sends the random number sequence to the tag device through the confirmation response instruction (ACK), and the tag device sends the relevant data to the reader, such as the protocol control word (Protocol Control, PC)/Extended Protocol Control Word (Extended Protocol Control, XPC), Electronic Product Code (Electronic Product Code, EPC), Data Packet Cyclic Redundancy Check (Cyclic Redundancy Check, CRC) (PacketCRC), etc. If the EPC is valid, the reader can send a repeated query instruction (QueryRep) or other commands, if the EPC is invalid, the reader can send a negative acknowledgment (NAK). From the reader sending the query instruction to the reader receiving the relevant data sent by the tag device is a single tag device response process. Exemplary, the communication process between the reader and the tag is shown in Figure 3.

(3) Application scenarios of backscattering

1) Monostatic Backscatter Communication System (MBCS)

The traditional RFID system is a typical MBCS, which includes a BSC transmitter (such as a tag) and a reader. The reader includes an RF source and a BSC receiver, wherein the RF source is used to generate an RF signal to power the BSC transmitter/Tag. The BSC transmitter backscatters the modulated RF signal, and the BSC receiver in the reader receives the backscattered signal and then demodulates the signal. Since the RF source and the BSC receiver are in the same device, such as the reader here, it becomes a single-station backscatter communication system. In the MBCSs system, since the RF signal sent from the BSC transmitter will undergo a double near-far effect caused by the signal attenuation of the round-trip signal, the signal energy attenuation is large, and the MBCS system is generally used for short-distance backscatter communications, such as traditional RFID applications. For example, MBCS can refer to part (a) of Figure 4.

2) Bistatic Backscatter Communication System (BBCS)

Different from the MBCS system, the RF source, BSC transmitting equipment and BSC receiving equipment in the BBCS system are separated. Part (b) of Figure 4 shows a schematic diagram of the BBCS system. Therefore, BBCS avoids the problem of large round-trip signal attenuation. In addition, the performance of the BBCS communication system can be further improved by properly placing the RF source. It is worth noting that ambient backscatter communications ABCSs (ambient backscatter communications systems) are also a type of dual-base backscatter communications, but unlike the BBCS system, which uses a dedicated signal RF source, the RF source in the ABCS system can be an available RF source in the environment, such as a TV tower, cellular base station, WiFi signal, Bluetooth signal, etc.

(4) Antenna tuning and matching network

Taking the uplink transmission scenario as an example, the input impedance of the antenna radiating unit is a function of the operating frequency, antenna type, antenna size and wireless environment. Its input impedance will change greatly with the changes of the above factors, while the output impedance of the transmitter power stage is relatively unchanged, which will cause impedance mismatch between the transmitter and the antenna, causing part of the transmitter final stage output power sent by the feeder to be reflected back by the antenna, affecting the normal working state of the final stage circuit. The reflected power flows ineffectively on the transmission line, generating additional heat loss on the wire resistance, reducing the radiation efficiency of the system power. Therefore, it is necessary to consider the impedance matching between the transmitter and the antenna.

There are two common types of impedance matching: 1) Microwave and other higher RF systems use transmission lines for matching; 2) Medium and short wave systems use LC matching networks. In order not to consume or reduce power consumption, pure reactance matching networks are usually used. Figure 5 shows several common LC matching networks: The matching network consists of an inductor and a capacitor, the number can be one or more, and its form includes the basic Γ shape, the extended T shape and the Π shape, where ZA represents the impedance of the antenna, ZL represents the load impedance, L represents the inductor, and C represents the capacitor.

The impedance matching network provides impedance to the RFFE (Radio Frequency Front End), which provides the complex conjugate impedance of the RFFE to the antenna. Impedance matching networks usually use inductors and capacitors to form a network with relatively low losses and achieve maximum power transfer. Transmission lines and transformers can also be used for matching, but they are not the best choice for matching antennas.

As the frequency changes, the input impedance of the antenna will change significantly:

When the antenna operates in different frequency bands, such as 900MHz and 2.4GHz, the impedance will change;

When the antenna works in the same frequency band, such as 890MHz-920MHz, the impedance will also change.

As shown in Figure 6, the dynamic range of the antenna's resistance component (Rin) and reactance component (Xin) reaches 5KΩ. Furthermore, considering environmental changes, antenna impedance matching becomes a key issue affecting the antenna system efficiency and uplink and downlink coverage and sensitivity.

Through frequency switching/channel switching, interference can be effectively reduced and the demodulation performance of the receiving end can be improved. The existing fixed impedance matching network cannot meet the problem of frequent channel switching. If the matching network is composed only of fixed inductance and fixed capacitance, the matching ability of the network is limited to fixed impedance. Since the antenna impedance varies with frequency and usage conditions, the fixed impedance coverage is limited, and only a few frequency bands or only one usage condition can obtain the best match. In this case, an impedance matching network with variable parameters can be considered, for example, setting an adjustable capacitor or adjustable inductor in the matching network.

For example, tunable capacitors can provide complex conjugate matching to a load over a very wide frequency range, thereby achieving maximum power transfer over multiple frequency bands.

In addition, the values of each component in the network can be changed according to the antenna impedance values corresponding to different carrier frequencies to achieve dynamic full-band matching. Obviously, the more components there are, the larger the value range of the components and the higher the accuracy. Due to the limitations of equipment size and control resources, the number of components is usually limited to a certain range.

However, referring to the existing antenna tuner (as shown in FIG. 7 ), it usually adopts a traditional digital antenna tuner, and the control circuit is mostly implemented based on a single-chip microcomputer. On the one hand, this tuning method is independently performed by the RF communication device, which has high hardware requirements for the device and requires targeted detection and control circuits based on the tuning requirements, resulting in high equipment costs. On the other hand, the detection information provided by the parameter detection circuit can only qualitatively give the relative value of the input impedance of the matching network, that is, the resistance is greater than or less than 50Ω, and the reactance is greater than or less than 0, but cannot give a quantitative offset value. The control circuit can only traverse the matching network component values according to the detection results to complete the impedance matching, which is slow and has low accuracy.

Therefore, it is necessary to consider the tuning scheme of communication equipment, especially backscatter communication (BSC) equipment, such as tags, to deal with the problems of limited uplink coverage and downlink reception sensitivity caused by the impedance change of the above equipment.

The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE)/LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terms are used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems.

Among them, the terminal can be a mobile phone, tablet computer (Tablet Personal Computer), laptop computer (Laptop Computer), notebook computer, personal digital assistant (Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), mobile Internet device (Mobile Internet Device, MID), augmented reality (Augmented Reality, AR), virtual reality (Virtual Reality, VR) equipment, robot, wearable device (Wearable Device), flight vehicle (flight vehicle), vehicle user equipment (VUE), shipborne equipment, pedestrian terminal (Pedestrian User Equipment, PUE), smart home (home equipment with wireless communication function, such as refrigerator, TV, washing machine or furniture, etc.), game console, personal computer (Personal Computer, PC), ATM or self-service machine and other terminal side equipment. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. The vehicle-mounted device may also be referred to as a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal is not limited in the embodiments of the present application.

The network side equipment may include access network equipment or core network equipment, wherein the access network equipment may also be referred to as radio access network (RAN) equipment, radio access network function or radio access network unit. The access network equipment may include base stations, wireless local area network (WLAN) access points (AS) or wireless fidelity (WiFi) nodes, etc. Among them, the base station may be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B (HNB), a Home Evolved Node B (home evolved Node B), a Transmission Reception Point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

The tuning indication method provided in the embodiment of the present application is described in detail below through some embodiments and application scenarios in conjunction with FIG. 8 .

Step 801: A first device sends first information to a second device.

In the embodiment of the present invention, the first device may be understood as a device that needs to be tuned. The first device may obtain the tuning indication information by sending the first information to the second device. The second device may be understood as a device that configures the tuning indication information for the first device. After the indication information is configured, the second device may directly send it to the first device or send it to the first device through other devices. Both the first device and the second device may be understood as communication devices.

Optionally, the first device includes any one of the following: a tag, a first terminal, a transmitter of a backscattered signal;

Alternatively, the second device includes any one of the following: a base station, a relay, a second terminal, a reader/writer, a radio frequency source device, and a receiving end of a backscattered signal.

Exemplarily, the first device and the second device may include any one of the following combinations:

The second device is the base station/reader/relay, and the first device is the tag;

The second device is a UE, and the first device is a tag;

The second device includes a network device and a third device, wherein the network device is a base station/reader/relay, the first device is a tag, and the third device is a UE;

The second device includes a network device and a fourth device, wherein the network device is a base station/reader/relay, the first device is a tag, and the fourth device is a UE;

The second device is a base station relay, and the first device is a UE.

Exemplarily, the first device includes any of the following:

Passive tag, no energy storage capacitor/battery, relies on RF signal for power supply (the received RF signal is the power signal of the rectifier), does not have carrier generation capability, and has the lowest power consumption;

Semi-passive tags have energy storage capacitors/batteries, rely on non-RF signals for power supply, and optionally have PA/LNA or other active devices. They do not have carrier generation capabilities and have the second highest power consumption;

Active tags have energy storage capacitors/batteries, rely on non-RF signals for energy, have carrier generation capabilities, and consume the most power;

The classification of the above tags is not unique and definite. Here we only give the possible classification features of each tag.

Optionally, the first information includes at least one of the following: capability information of the first device, environmental parameter information, reference signal measurement information, and a reference signal.

Optionally, the capability information of the first device is used to indicate at least one of the following:

Tunable capability, device type, frequency deviation capability, oscillator capability, number of load impedances, impedance value, power amplifier PA parameters, and rectifier parameters.

Optionally, the tunable capability indicates at least one of the following: whether the device has tunable capability, a dynamic range of the tunable tuner, an accuracy of the tunable tuner, and a tuning parameter type of the tunable tuner;

The device type is divided according to whether it has carrier generation capability;

The frequency deviation capability indicates at least one of the following: duration of the first level, a switching period of the first level, a frequency modulation capability of the varactor diode, and a hardware capability related to the frequency modulation capability;

The oscillator capability indicates at least one of the following: crystal frequency, clock frequency, and oscillator stability.

In the embodiment of the present invention, the capability information of the first device may indicate at least one of the following information:

1) Whether it has tunable capability. If so, report at least one of the following capabilities:

The dynamic range of the tuner, e.g., the range of tunable capacitor values;

The accuracy of the tuner, e.g., the amount of tuning that can be achieved within the range of tunable capacitor values;

The type of tuning parameters of the tunable device, such as resistance, capacitance or inductance, or a combination thereof;

It can be understood that the indication of whether there is tunable capability may directly indicate "yes" or "no", or may indicate the capability itself, for example, indicating the dynamic range of the tunable tuner.

2) Equipment Type

It has the capability of carrier generation, i.e., it is an active device;

No carrier generation capability, i.e. passive or semi-passive devices;

3) Frequency deviation capability

First level duration/first level switching period;

The frequency modulation capability of the varactor diode;

Other hardware capabilities related to frequency modulation capabilities, such as ring oscillator frequency deviation capability;

4) Oscillator Capability

Crystal frequency, for example, a 100MHz reference clock source;

Clock frequency, for example, 20MHz frequency shift capability;

Oscillator stability, for example, the frequency error is 100ppm at 20MHz deviation;

5) Other capabilities, such as the number and value of load impedances, PA parameters, rectification parameters, etc.

Optionally, the first information or the capability information of the first device further includes at least one of the following information: insufficient power information and power saving request information. At least one of the insufficient power information and power saving request information can be used to determine the matching status of the first device.

Exemplarily, the matching state of the first device can be divided into complete matching, moderate matching and mismatching. It is understandable that the number of matching states is not fixed (the above three divisions are only for example) and need to be defined according to different scenarios.

In the embodiment of the present invention, at least one of the environmental parameter information, the reference signal measurement information, and the reference signal is reported, mainly for determining whether the tag needs to be tuned.

Regarding environmental parameter information, the tag can report environmental parameters in any of the following ways:

Direct reporting method: Taking temperature and humidity as an example, when the ambient temperature and humidity changes are detected, the tag directly reports parameters such as temperature and humidity to the network;

Indirect reporting method: Taking temperature and humidity as an example, the specific quantity is not reported, and only the change is reported through fixed bits. For example, if the temperature and humidity exceed the threshold, the environmental parameter change information is reported through 1 bit.

Among them, regarding the reference signal measurement information, for the active device, it measures the reference signal and reports the relevant information of the reference signal measurement quantity (such as RSRP) so that the second device can obtain the reference signal measurement information; or the network device (for example, the second device, or other network devices) sends a reference signal and assists in measuring the reference signal strength through the cascade channel, and the first device (for example, tag) reflects the reference signal in all 1 or a certain specific modulation mode, so that the second device can obtain the reference signal measurement information. Among them, all 1 reflection can be understood as direct reflection, and in the embodiment of the present invention, reflection can also be understood as backscattering.

One possible manner is that the tag (first device) actively sends a reference signal, and the network device (second device) measures the reference signal to obtain reference signal measurement information.

When the first information includes the reference signal, it should be understood that the current first device has the ability to send the reference signal, for example, the first device is an active device. It is understandable that when the first information includes at least one of the capability information, environmental parameter information, and reference signal measurement information of the first device, the first device may be a passive device, a semi-passive device, or an active device.

It is understandable that the triggering step 801, or the triggering process before step 801, may be initiated by the first device, may be initiated by the second device, or may be triggered by other devices other than the first device and the second device. For example, the first device may send a tuning request to the second device, and after the second device sends a request response to the first device, the first device executes the above step 801; or the above first device may execute the above step 801 after receiving the tuning instruction sent by the second device.

Step 802: The first device receives indication information sent by the second device;

Wherein, the first information is used to determine the indication information;

The indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter.

Optionally, the first device receives the indication information sent by the second device, including any one of the following:

The first device receives indication information directly sent by the second device;

The first device receives indication information forwarded by the second device through the sixth device.

It is understandable that the second device may directly send the indication information to the first device, or send the indication information to the sixth device, and then send the indication information to the first device through the sixth device. The sixth device may be the third device or the fourth device, or may be a device other than the second device, the third device and the fourth device.

Optionally, the tuning and matching mode includes matching or non-matching;

The tuning object includes at least one of the following: antenna tuning, matching circuit tuning, load impedance tuning, and other circuit tuning;

The tuning parameters include at least one of the following: a capacitance value of a tunable network, an inductance value of a tunable network, a resistance value of a tunable network, and a selection of a load impedance.

In the embodiment of the present invention, the tuning and matching mode indicates matching, that is, indicates that the first device does not radiate signals and energy outwardly, and the tuning and matching mode indicates mismatching, that is, indicates that the first device reflects signals and energy outwardly.

For example, when the tag sends a backscatter signal, if OOK (on-off keying) modulation is used, when bit 0 is transmitted, it is in a matched state and absorbs energy; when bit 1 is transmitted, it is in a mismatched state and reflects energy. When a modulation method other than OOK is used, such as PSK (phase shift keying) or FSK, the tag should be in a mismatched state and reflect energy outward.

When the tag is in the energy storage state and the signal demodulation state, the tag is indicated to be in the matching state so that the energy and signal can be received by the tag as much as possible.

It is worth noting that the purpose of the present invention is to ensure maximum energy reflection/absorption as much as possible through dynamic indication/semi-static indication combined with the tuning object of the tag under the premise of determining the tuning matching method.

In the embodiment of the present invention, whether the tag is in a matching or mismatching state, the selection of its tuning object will affect the tunable dynamic range and accuracy, and further affect the matching/mismatching depth. For example, as shown in Table 1, different matching objects are set in different situations, where the first row of Table 1 can be understood as tuning the antenna and the matching circuit when the first device only includes one load impedance.

Table 1

The other circuit tuning may be understood as the tuning of other circuits other than the matching circuit.

In the embodiment of the present invention, the tuning parameters are mainly used to indicate the working parameters of the tunable matching network of the first device, including at least one of the following: the capacitance value of the tunable network, the inductance value of the tunable network, the resistance value of the tunable network, and the selection of the load impedance. The selection of the load impedance specifies the selection of a certain load impedance for signal reflection and signal reception.

If the tunable matching network of the tag has a combination of components such as inductors and capacitors, the tuning parameters may also be a combination of the above methods.

In addition, since a frequency deviation may be generated when a tag sends a backscattered signal, the magnitude of the frequency deviation will also affect the matching depth of the signal. Therefore, the tuning parameters may also include a modulation mode and a frequency deviation magnitude.

In an embodiment of the present invention, for an active device (tag), that is, when the first device is an active device, the indication information can be used to indicate time-frequency resources. The first device adjusts the tuning parameters within the tunable range according to the time-frequency resources configured by the network device, combined with the hardware parameters of the tag and the detected environmental parameters, to achieve matching between the antenna and the RF circuit. This implementation method requires the tag to have the ability to detect reflected signals. For example, the tag needs to have a detection circuit for reflected signals, and send the detection results to the MCU (Microcontroller Unit) through a serial-parallel interface, and the MCU determines the value of the tuning network by itself, which has certain requirements on the capabilities of the tag.

Optionally, the second device determines a variable parameter according to the first information;

The second device determines indication information according to the variable parameter;

The variable parameters include at least one of the following:

The capability information of the first device, environmental parameter information, reference signal measurement information, signal frequency information, matching status of the first device, and energy storage efficiency of the first device.

It can be understood that the variable parameter determined by the second device based on the first information reported by the first device may be information explicitly carried by the first information, information implicitly carried by the first information, or information acquired or measured based on the reception of the first information.

Among them, the energy storage efficiency can be determined based on the reported rectifier information.

The above-mentioned second device can determine the indication information according to the first information according to different scenarios affecting impedance; wherein, the determination of the scenario can be determined based on the first information or by other means, and the embodiment of the present invention does not limit this.

Taking the case where the first information includes a reference signal measurement amount as an example, the second device compares the obtained reference signal measurement amount with the carrier transmission power in combination with the known path loss information and the tag hardware insertion loss information:

If it is less than a certain threshold, the tag is instructed to tune;

Otherwise, no tag tuning is indicated.

Exemplarily, as shown in Table 2, in different scenarios, for example, FSK modulation, RF signals of different frequencies storing energy for the tag, poor stability of the tag crystal oscillator, and the application of the tag in extreme environments (such as fire warning), the corresponding conditions are determined according to the first information, thereby determining the corresponding tuning indication information.

Table 2

Optionally, the indication information is also used to indicate energy storage parameters.

In the embodiment of the present invention, in the energy storage scenario, the indication information is also used to indicate energy storage parameters.

Exemplarily, taking the energy storage scenario as an example (tag impedance needs to be matched), the matching state changes due to frequency changes of RF energy signals and changes in environmental parameters, affecting the parameter indication method when the energy storage efficiency is affected. The matching state changes due to frequency changes of RF energy signals and changes in environmental parameters, affecting the parameter indication method when the energy storage efficiency is affected. As shown in Table 3, three matching states are exemplarily defined, and the indication information of the tuning parameters and energy storage parameters is determined according to these three matching states. In the optional indication method, the change in the table refers to the need to indicate the corresponding variable information, and no indication is required if there is no change.

Table 3

In the embodiment of the present invention, step 802 may adopt at least one of the following methods:

In method 1, the indication information is sent through at least one of the following: downlink control information DCI, media access control control element MAC CE, side link control information SCI, and a preamble.

The preamble may be a physical frame preamble.

Mode 2, the first device receiving the indication information sent by the second device, includes at least one of the following:

The first device receives the indication information sent by the second device through radio resource control RRC signaling, where the information unit in the RRC signaling includes the indication information;

The first device receives the indication information sent by the second device through first downlink control information DCI signaling, where the indication information indicates a TCI state in a transmission configuration indication TCI state pool;

The first device receives the indication information sent by the second device through a media access control control element MAC CE, where the indication information indicates a TCI state in a TCI state pool;

The first device receives the indication information sent by the second device through the second DCI signaling, where the indication information indicates one TCI state among N TCI states, where the N TCI states are selected by the MAC CE from M TCI states in the TCI state pool, where 1≤N≤M, and N and M are positive integers;

The TCI state pool is obtained by RRC configuration, and each TCI state in the TCI state pool corresponds to a group of indication parameters, and each group of indication parameters includes at least one of the following: tuning matching mode, tuning object, and tuning parameter.

Optionally, each group of indication parameters is different from each other, which can be understood as at least one of a tuning matching mode, a tuning object, and a tuning parameter of one group of indication parameters being different from another group of indication parameters.

Optionally, the method further includes:

The first device receives a first signal sent by a third device;

The first device modulates, demodulates or stores energy on the first signal based on the indication information;

The third device and the second device are the same device, or the third device and the second device are different devices.

In the embodiment of the present invention, the device that sends the first signal to the first device may be the second device itself, or may be another device other than the second device.

Optionally, the first signal includes a carrier signal or a reference signal.

The above-mentioned first signal can be a carrier signal, wherein the carrier signal is divided into an energy supply carrier signal or a communication carrier signal. The energy supply carrier signal is mainly used for energy storage/modulation of the tag, while the communication carrier signal is mainly a carrier for the tag to transmit data bits. If the first device (tag) has the ability to generate a carrier signal, the first signal is optional to send. The communication carrier signal can also be a carrier signal carrying information, such as a carrier signal based on OOK modulation/BPSK modulation. The carrier signal can be a single-frequency continuous wave, a frequency-modulated continuous wave, etc.

The above-mentioned first signal may also be a reference signal that does not contain any transmission information, such as the existing LTE/NR synchronization and reference signals, including synchronization signals and physical broadcast channels SSB, channel state information reference signals CSI-RS, demodulation reference signals, etc.

Optionally, the parameter configuration information of the first signal includes at least one of the following:

1) Signal type;

A radio frequency (RF) signal for power supply;

RF signals for communication;

RF signal for demodulation;

Hybrid RF signals, i.e. signals that can be used for both energy storage and modulation;

2) Time domain resources;

3) Frequency domain resources;

4) Bandwidth information;

5) Waveform type;

6) Protection interval;

7) Signal power.

In the embodiment of the present invention, the first signal may be understood as an execution object of the indication information, and the specific execution operation is not limited to modulation, demodulation or energy storage, but may also be measurement and other operations.

The above indication information may be a dynamic indication (for example, using the above-mentioned method 1) or a semi-static indication (for example, using the above-mentioned method 2).

Optionally, the indication information indicates at least two tuning parameters, and each of the at least two tuning parameters corresponds to a time unit;

The method further comprises:

In a first time unit, the first device measures a reference signal with a first tuning parameter to obtain a first reference signal measurement amount, where the first tuning parameter is a tuning parameter corresponding to the first time unit;

In a case where the first reference signal measurement quantity is greater than the second reference signal measurement quantity, the first device modulates, demodulates or stores energy on the first signal based on the first tuning parameter;

The second reference signal measurement amount is a reference signal measurement amount obtained by the first device measuring the reference signal with a second tuning parameter in a second time unit; the second time unit is a time unit other than the first time unit in the indication information, and the second tuning parameter is a tuning parameter corresponding to the second time unit;

The first information is sent from a third device to the first device, and the third device and the second device are the same device, or the third device and the second device are different devices.

Among them, the indication information corresponding to the time unit can be executed by at least one of the method one or the method two.

The time unit is a symbol level, a slot level, or a frame level. The reference signal may be the first signal. The comparison between the first reference signal measurement amount and the second reference signal measurement amount may be performed by the second device, and the second device may instruct the first device to perform the first tuning parameter.

Exemplarily, the correspondence between the time unit and the tuning parameter is shown in Table 4. A specific time unit performs reference signal measurement with the corresponding tuning parameter to obtain the corresponding reference signal measurement amount (such as RSRP), and based on the comparison result of the reference signal measurement amount, determines the current best tuning reference signal for subsequent energy storage, demodulation and modulation operations. For example, if at the T4 time unit, the tag's tuning parameter is parameter 4, and the corresponding RSRP 4 is the strongest, parameter 4 is used for the tag's subsequent energy storage, demodulation and modulation within a specific time.

Table 4

Time unit Tag tuning parameters Reference signal measurements (such as RSRP) T1 Parameter 1 RSRP1 T2 Parameter 2 RSRP2 T3 Parameter 3 RSRP3 T4 Parameter 4 RSRP4 … … …

In an embodiment of the present invention, by dynamically configuring/semi-statically configuring the tuning matching method, tuning object, tuning parameters and energy storage parameters of the first device, the uplink coverage range and downlink receiving sensitivity can be improved, especially in specific modulation modes (such as FSK) or specific application scenarios (such as multi-carrier energy storage, harsh environment detection).

In the embodiment of the present invention, in a scenario where a first device modulates a first signal, the first device modulates the first signal based on the indication information, including:

The first device modulates the first signal based on the indication information to obtain a first modulated signal;

The method further comprises:

The first device sends the first modulated signal to a fourth device;

The fourth device and the second device are the same device; or, the fourth device and the second device are different devices; or, the fourth device and the third device are the same device; or, the fourth device and the third device are different devices.

In the embodiment of the present invention, the device for receiving the first modulated signal may be the second device, or may be a third device that sends the first signal, or may be a fourth device that is different from the second device and the third device.

Optionally, when the third device and the second device are different devices, the third device is a device controlled by the second device;

Alternatively, when the third device and the second device are different devices, the first signal is forwarded by the second device to the first device via the third device.

Optionally, when the third device and the second device are different devices, at least one of the third device and the fourth device is further used to receive the indication information sent by the second device;

Alternatively, when the third device and the second device are different devices, the first signal is forwarded by the fifth device to the first device via the third device, and at least one of the third device, the fourth device and the fifth device is used to receive the indication information sent by the second device.

Taking the tag tuning in which the first device is a tag and the second device is a network device as an example, the following steps illustrate a dynamic indication method for tag tuning, in which the network device gives a dynamic indication mode and transmission process for tag tuning according to at least one of the capability information, environmental parameter information, reference signal measurement information, and reference signal reported by the tag:

1) The network device sends instruction information to the tag, dynamically indicating at least one of the tag's tuning matching mode, tuning object, tuning parameter, and energy storage parameter;

The sending method of the instruction information includes any of the following:

Sent by network devices to tags;

The forwarding device sends, wherein the forwarding device receives the indication information sent by the network device;

The radio frequency source device sends, and the radio frequency source device is a device that provides a radio frequency carrier signal for the tag;

Transmitted by third-party devices, i.e. devices other than network devices, forwarding devices and RF source devices;

The dynamic indication method includes but is not limited to the use of DCI, MAC CE, SCI or physical frame preamble, etc.

2) The tag receives the first signal, and modulates, demodulates or stores energy on the first signal based on the indication information.

The network device determines at least one of the matching state, tuning mode and tuning parameters based on the information reported by the tag. Table 5 below gives examples of corresponding tuning parameters under different environmental parameters, signal frequencies and reference signal measurement parameters. Among them, the signal frequency includes the carrier signal frequency, the frequency deviation generated during modulation and the frequency error caused by the crystal oscillator stability. Among them, the above signal frequency is determined by the network device according to the first information sent by the tag.

Table 5

As can be seen from the above table, the same temperature, different frequencies, and different RSRPs may also correspond to different tag tuning parameters. Therefore, the determination method of the network device can be predefined or obtained by implicit calculation (such as fitting by nonlinear modeling), which is not limited here.

Taking the tag tuning in which the first device is a tag and the second device is a network device as an example, the following steps illustrate a semi-static indication method of tag tuning, in which the network device gives a semi-static indication mode and transmission process of tag tuning according to at least one of the capability information, reference signal measurement information, and reference information reported by the tag. The difference from the previous embodiment is that the environmental parameters (for example, including temperature and humidity) are fixed for a period of time, that is, the impedance of the tag is only affected by the signal frequency:

1) The network device sends indication information to the tag, semi-statically indicating at least one of the tag's tuning matching mode, tuning object, tuning parameter, and energy storage parameter.

The sending method of the instruction information includes any of the following:

Sent by network devices to tags;

The forwarding device sends, wherein the forwarding device receives the indication information sent by the network device;

The radio frequency source device sends, and the radio frequency source device is a device that provides a radio frequency carrier signal for the tag;

The data is sent by a third-party device, i.e., a device other than a network device, a forwarding device, and a RF source device.

The configuration/indication method of the semi-static indication includes but is not limited to at least one of the following:

RRC configuration: that is, the high-level RRC directly configures an information unit containing matching status and/or tuning mode and/or tuning parameters, and informs the label;

RRC configuration, DCI indication: RRC configures a TCI state pool containing multiple transmission configuration indication (TCI) states, each TCI state corresponds to a different matching state and/or tuning mode and/or tuning parameter. Then one of the TCI states is indicated to the tag through DCI signaling;

RRC configuration, MAC CE activation: RRC configures a TCI state pool containing multiple TCI states, each TCI state corresponds to a different matching state and/or tuning mode and/or tuning parameter. Then, one of the TCI states is indicated to the label through MAC CE signaling;

RRC configuration, MAC CE activation, DCI indication: RRC configures one or more TCI state pools, including M TCI states, each TCI state corresponds to a different matching state and/or tuning mode and/or tuning parameter. MAC CE selects up to N (N≤M) TCI states, and DCI selects one of the N TCI states for indication;

Other combinations based on RRC, DCI, MAC CE, SCI or L1 signaling.

2) The tag receives the first signal and performs modulation, demodulation or energy storage based on the indication information.

If the network device has determined that it needs to instruct the tag to tune, since the tunable range and accuracy of the tag are limited, the tag can be instructed to tune in the manner shown in Table 4 above. This measurement method assumes that the signal frequency and environmental parameters remain unchanged over a period of time. As shown in Table 4, if the tag's tuning parameter is parameter 4 at the T4 time unit, and the corresponding RSRP4 is the strongest, parameter 4 is used for subsequent tag energy storage, demodulation, and modulation.

In an embodiment of the present invention, the network device dynamically configures/semi-statically configures the matching method, tuning object and tuning parameters of the tag according to at least one of the tag capability information, reference signal measurement information, environmental parameter information and reference signal to improve the BSC uplink coverage and downlink reception sensitivity.

In the embodiment of the present invention, optionally, a tunable matching network can be configured based on the hardware architecture of the traditional tag to achieve uplink coverage enhancement and downlink sensitivity improvement. As shown in FIG9 , the tunable matching network is set at the rear end of the antenna, connected to the energy collection module/signal receiving module/modulation and coding module to control the matching of the tag.

It should be understood here that the applicable scenarios of the method in the specific embodiment of the present invention include but are not limited to: RFID dedicated reader, WiFi transmission scenario or gNB transmission scenario, etc.

In the embodiment of the present invention, the transmission process of the configuration indication signal is configured in different network deployment situations. Wherein, the single-base architecture means that the sender of the first signal (the third device) and the receiver of the backscattered signal (the fourth device) are both network devices. When the receiver of the backscattered signal (the fourth device) is a device different from the network device (the third device), it is a dual-base architecture.

The transmission process of the single base architecture configuration indication signal is as follows:

Scenario 1: The network device configures at least one of the tuning matching mode, the tuning object, and the tuning parameter, and sends the configuration information to the tag (first device).

Scenario 2: The network device configures at least one of a tuning matching mode, a tuning object, and a tuning parameter, and the tuning matching mode, the tuning object, and the tuning parameter are sent by the network device, and the first signal is sent by a third device, wherein the third device is controlled by the network device and is responsible for sending the first signal to the tag;

Scenario 3: A third-party device configures a tuning matching method, a tuning object, and at least one of the tuning parameters. The tuning matching method, the tuning object, and at least one of the tuning parameters are sent by the third-party device to the network device and the tag. The first signal is sent by the network device to the tag.

The transmission process of the dual-base architecture configuration indication signal:

Scenario 1: The network device configures the tuning and matching mode, the tuning object, at least one of the tuning parameters and parameter information of the first signal, the tuning and matching mode, the tuning object and at least one of the tuning parameters are sent by the network device to the tag, the first signal parameter is sent by the network device to the fourth device and the fourth device sends the first signal to the tag;

Scenario 2: The network device configures the tuning matching mode, the tuning object, and at least one of the tuning parameters, which is sent by the network device to the fourth device and forwarded to the tag by the fourth device, and the first signal is still sent by the network device;

Scenario 3: The network device configures at least one of the tuning matching mode, the tuning object, and the tuning parameter, the network device sends the tuning matching mode, the tuning object, and at least one of the tuning parameter to the fourth device, and the fourth device forwards the tuning signal to the tag, and the first signal is sent by the third device, wherein the third device is controlled by the network device and is responsible for sending the first signal to the tag;

Scenario 4: The third-party device configures a tuning matching mode, a tuning object, and at least one of the tuning parameters. The tuning matching mode, the tuning object, and at least one of the tuning parameters are sent by the third-party device to the network device, the tag, and the fourth device. The first signal is sent by the network device to the tag.

Scenario 5: A third-party device configures a tuning matching method, a tuning object, and at least one of the tuning parameters. The tuning matching method, the tuning object, and at least one of the tuning parameters are sent by the third-party device to the network device, the tag, and the fourth device. The first signal parameter is sent by the network device to the fourth device. The fourth device sends a first signal to the tag according to the first signal parameter.

The tuning indication method in this embodiment includes: a first device sends first information to a second device; the first device receives the indication information sent by the second device; wherein the first information is used to determine the indication information; the indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter. By configuring the tuning indication parameter by the second device, the efficiency and flexibility of tuning can be improved.

The tuning indication method provided in the embodiment of the present application may be executed by a first device. In the embodiment of the present application, the first device provided in the embodiment of the present application is described by taking the first device executing the tuning indication method as an example.

The first device comprises:

A first sending module, used to send first information to a second device;

A first receiving module, used to receive indication information sent by the second device;

Wherein, the first information is used to determine the indication information;

The indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter.

Optionally, the indication information is sent via at least one of the following:

Downlink control information DCI, media access control control element MAC CE, sidelink control information SCI, preamble code.

Optionally, the first device further includes:

A third receiving module, configured for the first device to receive a first signal sent by a third device;

A first execution module, configured for the first device to modulate, demodulate or store energy on the first signal based on the indication information;

The third device and the second device are the same device, or the third device and the second device are different devices.

Optionally, the first receiving module includes at least one of the following:

A first receiving submodule, configured to receive the indication information sent by the second device through radio resource control RRC signaling, where the information unit in the RRC signaling includes the indication information;

A second receiving submodule is configured to receive the indication information sent by the second device through the first downlink control information DCI signaling, where the indication information indicates a TCI state in the transmission configuration indication TCI state pool;

A third receiving submodule is configured to receive the indication information sent by the second device through a media access control control unit MAC CE, where the indication information indicates a TCI state in a TCI state pool;

a fourth receiving submodule, configured to receive the indication information sent by the second device through the second DCI signaling, where the indication information indicates one TCI state among N TCI states, where the N TCI states are selected by the MAC CE from the M TCI states in the TCI state pool, 1≤N≤M, and N and M are positive integers;

The TCI state pool is obtained by RRC configuration, and each TCI state in the TCI state pool corresponds to a group of indication parameters, and each group of indication parameters includes at least one of the following: tuning matching mode, tuning object, and tuning parameter.

Optionally, the indication information indicates at least two tuning parameters, and each of the at least two tuning parameters corresponds to a time unit;

The first device further includes:

A measuring module, configured to, in a first time unit, measure a reference signal by the first device with a first tuning parameter to obtain a first reference signal measurement amount, where the first tuning parameter is a tuning parameter corresponding to the first time unit;

a second execution module, configured to, when the first reference signal measurement value is greater than the second reference signal measurement value, modulate, demodulate or store energy on the first signal based on the first tuning parameter by the first device;

The second reference signal measurement amount is a reference signal measurement amount obtained by the first device measuring the reference signal with a second tuning parameter in a second time unit; the second time unit is a time unit other than the first time unit in the indication information, and the second tuning parameter is a tuning parameter corresponding to the second time unit;

The first information is sent from a third device to the first device, and the third device and the second device are the same device, or the third device and the second device are different devices.

Optionally, the first signal includes a carrier signal or a reference signal.

Optionally, the first execution module includes:

A first execution submodule, configured for the first device to modulate the first signal based on the indication information to obtain a first modulated signal;

The first device further includes:

A third sending module, used for sending the first modulated signal to a fourth device;

The fourth device and the second device are the same device; or, the fourth device and the second device are different devices; or, the fourth device and the third device are the same device; or, the fourth device and the third device are different devices.

Optionally, when the third device and the second device are different devices, the third device is a device controlled by the second device;

Alternatively, when the third device and the second device are different devices, the first signal is forwarded by the second device to the first device via the third device.

Optionally, when the third device and the second device are different devices, at least one of the third device and the fourth device is further used to receive the indication information sent by the second device;

Alternatively, when the third device and the second device are different devices, the first signal is forwarded by the fifth device to the first device via the third device, and at least one of the third device, the fourth device and the fifth device is used to receive the indication information sent by the second device.

Optionally, the first receiving module includes: any one of the following:

A fifth receiving submodule, configured to receive indication information directly sent by the second device;

The sixth receiving submodule is used to receive indication information forwarded by the second device through the sixth device.

Optionally, the first information includes at least one of the following: capability information of the first device, environmental parameter information, reference signal measurement information, and a reference signal.

Optionally, the capability information of the first device is used to indicate at least one of the following:

Tunable capability, device type, frequency deviation capability, oscillator capability, number of load impedances, impedance value, power amplifier PA parameters, and rectifier parameters.

Optionally, the tunable capability indicates at least one of the following: whether the device has tunable capability, a dynamic range of the tunable tuner, an accuracy of the tunable tuner, and a tuning parameter type of the tunable tuner;

The device type is divided according to whether it has carrier generation capability;

The frequency deviation capability indicates at least one of the following: first level duration, first level switching period, frequency modulation capability of the varactor diode, and hardware capability related to the frequency modulation capability, such as the frequency deviation capability of a ring oscillator.

The oscillator capability indicates at least one of the following: crystal frequency, clock frequency, and oscillator stability.

Optionally, the tuning and matching mode includes matching or non-matching;

The tuning object includes at least one of the following: antenna tuning, matching circuit tuning, load impedance tuning, and other circuit tuning;

The tuning parameters include at least one of the following: a capacitance value of a tunable network, an inductance value of a tunable network, a resistance value of a tunable network, and a selection of a load impedance.

Optionally, the first device includes any one of the following: a tag, a first terminal, a transmitter of a backscattered signal;

Alternatively, the second device includes any one of the following: a base station, a relay, a second terminal, a reader/writer, a radio frequency source device, and a receiving end of a backscattered signal.

Optionally, the indication information is also used to indicate energy storage parameters.

In the embodiment of the present application, the tuning efficiency and flexibility can be improved by configuring the tuning indication of the first device through the second device.

The first device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices other than a terminal. Exemplarily, the terminal may include but is not limited to the types of the terminal 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

The first device provided in the embodiment of the present application can implement the various processes implemented in the method embodiments of Figures 8 to 9 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

As shown in FIG10 , the embodiment of the present application further provides a first device 1000, including a processor 1001 and a memory 1002, wherein the memory 1002 stores a program or instruction that can be run on the processor 1001. For example, when the first device 1000 is a first device, the program or instruction is executed by the processor 1001 to implement the various steps of the above-mentioned tuning indication method embodiment, and can achieve the same technical effect. When the first device 1000 is a network side device, the program or instruction is executed by the processor 1001 to implement the various steps of the above-mentioned tuning indication method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

The embodiment of the present application also provides a first device, including a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps in the method embodiment shown in Figures 8-9. The first device embodiment corresponds to the above-mentioned first device side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to the first device embodiment and can achieve the same technical effect. Specifically, Figure 11 is a schematic diagram of the hardware structure of a first device implementing the embodiment of the present application.

The first device 1100 includes but is not limited to: a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109 and at least some of the components of a processor 1110.

Those skilled in the art can understand that the first device 1100 can also include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 1110 through a power management system, so as to implement functions such as managing charging, discharging, and power consumption management through the power management system. The first device structure shown in FIG11 does not constitute a limitation on the first device, and the first device may include more or fewer components than shown in the figure, or combine certain components, or arrange components differently, which will not be described in detail here.

It should be understood that in the embodiment of the present application, the input unit 1104 may include a graphics processing unit (GPU) 11041 and a microphone 11042, and the graphics processor 11041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1107 includes at least one of a touch panel 1071 and other input devices 11072. The touch panel 11071 is also called a touch screen. The touch panel 11071 may include two parts, a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 1101 can transmit the data to the processor 1110 for processing; in addition, the RF unit 1101 can send uplink data to the network side device. Generally, the RF unit 1101 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

The memory 1109 can be used to store software programs or instructions and various data. The memory 1109 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 1109 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 1109 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

The processor 1110 may include one or more processing units; optionally, the processor 1110 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1110.

The radio frequency unit 1101 is used for the first device to send the first information to the second device;

The first device receives the indication information sent by the second device;

Wherein, the first information is used to determine the indication information;

The indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter.

By configuring the tuning indication of the first device through the second device, the efficiency and flexibility of tuning can be improved.

It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment shown in Figures 8-9, and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

The tuning indication method provided in the embodiment of the present application is described in detail below through some embodiments and their application scenarios in conjunction with FIG. 12 .

Step 1201: The second device receives the first information sent by the first device.

Step 1202: The second device determines indication information according to the first information.

Step 1203: The second device sends the indication information to the first device.

The indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter.

Optionally, the indication information is sent via at least one of the following:

Downlink control information DCI, media access control control element MAC CE, sidelink control information SCI, preamble code.

Optionally, the second device sending the indication information to the first device includes at least one of the following:

The second device sends the indication information through radio resource control RRC signaling, and the information unit in the RRC signaling includes the indication information;

The second device sends the indication information through first downlink control information DCI signaling, where the indication information indicates a TCI state in a transmission configuration indication TCI state pool;

The second device sends the indication information through a media access control control element MAC CE, where the indication information indicates a TCI state in a TCI state pool;

The second device sends the indication information through second DCI signaling, where the indication information indicates one TCI state among N TCI states, where the N TCI states are selected by the MAC CE from M TCI states in the TCI state pool, where 1≤N≤M, and N and M are positive integers;

The TCI state pool is obtained by RRC configuration, and each TCI state in the TCI state pool corresponds to a group of indication parameters, and each group of indication parameters includes at least one of the following: tuning matching mode, tuning object, and tuning parameter.

Optionally, the indication information indicates at least two tuning parameters, and each of the at least two tuning parameters corresponds to a time unit.

Optionally, the second device determines the indication information according to the first information, including:

The second device determines a variable parameter according to the first information;

The second device determines indication information according to the variable parameter;

The variable parameters include at least one of the following:

The capability information of the first device, environmental parameter information, reference signal measurement information, signal frequency information, matching status of the first device, and energy storage efficiency of the first device.

Optionally, the second device determines a variable parameter according to the first information, including:

The second device determines a matching status of the first device according to the first information;

The first information includes at least one of the following information: insufficient power information and power saving request information.

Optionally, the method further includes any one of the following:

Sending a first signal to the first device;

Controlling a third device to send a first signal to the first device;

forwarding the first signal to the first device through a third device;

After receiving the first signal sent by the fifth device, sending the first signal to the first device;

The indication information is used for modulation, demodulation or energy storage of the first signal.

Optionally, the first signal includes a carrier signal or a reference signal.

Optionally, the configuration information of the first signal includes at least one of the following:

Signal type, time domain resources, frequency domain resources, bandwidth information, waveform type, guard interval, signal power;

The signal type includes any of the following:

RF signal for power supply, RF signal for communication, RF signal for demodulation, mixed RF signal.

Optionally, the method further includes any one of the following:

receiving a first modulated signal sent by the first device;

Sending the indication information to a fourth device, where the fourth device is used to receive the first modulated signal;

The first modulated signal is obtained by modulating the first signal.

Optionally, the second device sending the indication information to the first device includes any one of the following:

The second device directly sends the indication information to the first device;

The second device forwards the indication information through a sixth device.

Optionally, the first information includes at least one of the following: capability information of the first device, environmental parameter information, reference signal measurement information, and a reference signal.

Optionally, the capability information of the first device is used to indicate at least one of the following:

Tunable capability, device type, frequency deviation capability, oscillator capability, number of load impedances, impedance value, power amplifier PA parameters, and rectifier parameters.

Optionally, the tunable capability indicates at least one of the following: whether the device has tunable capability, a dynamic range of the tunable tuner, an accuracy of the tunable tuner, and a tuning parameter type of the tunable tuner;

The device type is divided according to whether it has carrier generation capability;

The frequency deviation capability indicates at least one of the following: duration of the first level, a switching period of the first level, a frequency modulation capability of the varactor diode, and a hardware capability related to the frequency modulation capability, for example, a frequency deviation capability of a ring oscillator;

The oscillator capability indicates at least one of the following: crystal frequency, clock frequency, and oscillator stability.

Optionally, the tuning and matching mode includes matching or non-matching;

The tuning object includes at least one of the following: antenna tuning, matching circuit tuning, load impedance tuning, and other circuit tuning;

The tuning parameters include at least one of the following: a capacitance value of a tunable network, an inductance value of a tunable network, a resistance value of a tunable network, and a selection of a load impedance.

Optionally, the first device includes any one of the following: a tag, a first terminal, a transmitter of a backscattered signal;

Alternatively, the second device includes any one of the following: a base station, a relay, a second terminal, a reader/writer, a radio frequency source device, and a receiving end of a backscattered signal.

Optionally, the indication information is also used to indicate energy storage parameters.

The tuning indication method provided in the embodiment of the present application is an execution method of the second device corresponding to the method embodiment of Figures 8 to 9, and achieves the same technical effect. To avoid repetition, it is not repeated here. The above optional implementation method can refer to the relevant description in the embodiment shown in Figures 8 to 9. To avoid repetition, this embodiment is not repeated.

The tuning indication method in this embodiment includes: a second device receives first information sent by a first device, and the second device determines indication information according to the first information; the second device sends the indication information to the first device, and the indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter. By configuring the tuning indication parameters by the second device, the efficiency and flexibility of tuning can be improved.

The tuning indication method provided in the embodiment of the present application may be executed by a second device. In the embodiment of the present application, the second device provided in the embodiment of the present application is described by taking the second device executing the tuning indication method as an example.

The second device comprises:

A second receiving module, used to receive first information sent by the first device;

A determination module, used to determine indication information according to the first information;

A second sending module, used to send the indication information to the first device;

The indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter.

Optionally, the indication information is sent via at least one of the following:

Downlink control information DCI, media access control control element MAC CE, sidelink control information SCI, preamble code.

Optionally, the second sending module includes at least one of the following:

A first sending submodule, configured to send the indication information through radio resource control RRC signaling, wherein the information unit in the RRC signaling includes the indication information;

A second sending submodule is configured to send the indication information through first downlink control information DCI signaling, where the indication information indicates a TCI state in a transmission configuration indication TCI state pool;

A third sending submodule is configured to send the indication information through a media access control control unit MAC CE, where the indication information indicates a TCI state in a TCI state pool;

a fourth sending submodule, configured to send the indication information through a second DCI signaling, where the indication information indicates one TCI state among N TCI states, where the N TCI states are selected by the MAC CE from M TCI states in the TCI state pool, where 1≤N≤M, and N and M are positive integers;

The TCI state pool is obtained by RRC configuration, and each TCI state in the TCI state pool corresponds to a group of indication parameters, and each group of indication parameters includes at least one of the following: tuning matching mode, tuning object, and tuning parameter.

Optionally, the indication information indicates at least two tuning parameters, and each of the at least two tuning parameters corresponds to a time unit.

Optionally, determine the modules, including:

A first determination submodule, used to determine a variable parameter according to the first information;

A second determining submodule, used to determine indication information according to the variable parameter;

The variable parameters include at least one of the following:

The capability information of the first device, environmental parameter information, reference signal measurement information, signal frequency information, matching status of the first device, and energy storage efficiency of the first device.

Optionally, the first determination submodule includes:

A first determining unit, configured to determine a matching status of the first device according to the first information;

The first information includes at least one of the following information: insufficient power information and power saving request information.

Optionally, the second device further includes:

A fourth sending module, configured to send a first signal to the first device;

A control module, used to control the third device to send a first signal to the first device;

a fifth sending module, configured to forward the first signal to the first device through a third device;

a sixth sending module, configured to send the first signal to the first device after receiving the first signal sent by the fifth device;

The indication information is used for modulation, demodulation or energy storage of the first signal.

Optionally, the first signal includes a carrier signal or a reference signal.

Optionally, the configuration information of the first signal includes at least one of the following:

Signal type, time domain resources, frequency domain resources, bandwidth information, waveform type, guard interval, signal power;

The signal type includes any of the following:

RF signal for power supply, RF signal for communication, RF signal for demodulation, mixed RF signal.

Optionally, the second device further includes:

a fourth receiving module, configured to receive a first modulated signal sent by the first device;

a seventh sending module, configured to send the indication information to a fourth device, wherein the fourth device is configured to receive the first modulated signal;

The first modulated signal is obtained by modulating the first signal.

Optionally, the second sending module includes any of the following items:

A fifth sending submodule, configured to directly send the indication information to the first device;

The sixth sending submodule is used to forward the indication information through a sixth device.

Optionally, the first information includes at least one of the following: capability information of the first device, environmental parameter information, reference signal measurement information, and a reference signal.

Optionally, the capability information of the first device is used to indicate at least one of the following:

Tunable capability, device type, frequency deviation capability, oscillator capability, number of load impedances, impedance value, power amplifier PA parameters, and rectifier parameters.

Optionally, the tunable capability indicates at least one of the following: whether the device has tunable capability, a dynamic range of the tunable tuner, an accuracy of the tunable tuner, and a tuning parameter type of the tunable tuner;

The device type is divided according to whether it has carrier generation capability;

The frequency deviation capability indicates at least one of the following: duration of the first level, a switching period of the first level, a frequency modulation capability of the varactor diode, and a hardware capability related to the frequency modulation capability, for example, a frequency deviation capability of a ring oscillator;

The oscillator capability indicates at least one of the following: crystal frequency, clock frequency, and oscillator stability.

Optionally, the tuning and matching mode includes matching or non-matching;

The tuning object includes at least one of the following: antenna tuning, matching circuit tuning, load impedance tuning, and other circuit tuning;

The tuning parameters include at least one of the following: a capacitance value of a tunable network, an inductance value of a tunable network, a resistance value of a tunable network, and a selection of a load impedance.

Optionally, the first device includes any one of the following: a tag, a first terminal, a transmitter of a backscattered signal;

Alternatively, the second device includes any one of the following: a base station, a relay, a second terminal, a reader/writer, a radio frequency source device, and a receiving end of a backscattered signal.

Optionally, the indication information is also used to indicate energy storage parameters.

In the embodiment of the present invention, the tuning efficiency and flexibility can be improved by configuring the tuning indication of the first device through the second device.

The second device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a network device, or may be other devices other than network devices. Exemplarily, the network device may include but is not limited to the types of network devices listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

The second device provided in the embodiment of the present application can implement each process implemented by the method embodiment of Figure 12 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

As shown in FIG13, the embodiment of the present application further provides a second device 1300, including a processor 1301 and a memory 1302, and the memory 1302 stores a program or instruction that can be run on the processor 1301. For example, when the second device 1300 is a terminal, the program or instruction is executed by the processor 1301 to implement the various steps of the method embodiment of FIG12 above, and can achieve the same technical effect. When the second device 1300 is a network side device, the program or instruction is executed by the processor 1301 to implement the various steps of the method embodiment of FIG12 above, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

The embodiment of the present application also provides a second device, including a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps of the method embodiment shown in Figure 12. The second device embodiment corresponds to the second device method embodiment, and each implementation process and implementation method of the above method embodiment can be applied to the second device embodiment and can achieve the same technical effect.

Specifically, the embodiment of the present application also provides a second device. As shown in Figure 14, the second device 1400 includes: an antenna 141, a radio frequency device 142, a baseband device 143, a processor 144 and a memory 145. The antenna 141 is connected to the radio frequency device 142. In the uplink direction, the radio frequency device 142 receives information through the antenna 141 and sends the received information to the baseband device 143 for processing. In the downlink direction, the baseband device 143 processes the information to be sent and sends it to the radio frequency device 142. The radio frequency device 142 processes the received information and sends it out through the antenna 141.

The method executed by the second device in the above embodiment may be implemented in the baseband device 143, which includes a baseband processor.

The baseband device 143 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 14, one of the chips is, for example, a baseband processor, which is connected to the memory 145 through a bus interface to call the program in the memory 145 to execute the network device operations shown in the above method embodiment.

The second device may further include a network interface 146, which is, for example, a Common Public Radio Interface (CPRI).

Specifically, the second device 1400 of the embodiment of the present invention also includes: instructions or programs stored in the memory 145 and executable on the processor 144. The processor 144 calls the instructions or programs in the memory 145 to execute the methods executed by the modules shown in Figure 12 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

The embodiment of the present application further provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the method embodiment shown in FIG. 8-9 is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here; or when the program or instruction is executed by a processor, each process of the method embodiment shown in FIG. 12 is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here.

The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory RO13, a random access memory RA13, a magnetic disk or an optical disk, etc. In some examples, the readable storage medium may be a non-transient readable storage medium.

An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the method embodiments shown in Figures 8-9 above, and can achieve the same technical effects. To avoid repetition, they are not described here; or, to implement the various processes of the method embodiment shown in Figure 12 above, and can achieve the same technical effects. To avoid repetition, they are not described here.

It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

The embodiments of the present application further provide a computer program/program product, which is stored in a storage medium, and is executed by at least one processor to implement the various processes of the method embodiments shown in Figures 8-9 above, and can achieve the same technical effect. To avoid repetition, they are not described here; or, the computer program/program product is executed by at least one processor to implement the various processes of the method embodiments shown in Figure 12 above, and can achieve the same technical effect. To avoid repetition, they are not described here.

An embodiment of the present application also provides a wireless communication system, including: a first device and a second device, wherein the first device can be used to execute the steps of the method shown in Figures 8-9 above, and the network side device can be used to execute the steps of the method shown in Figure 12.

It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment method can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, it can also be implemented by hardware. The computer software product is stored in a storage medium (such as RO13, RA13, disk, CD, etc.), including several instructions to enable the terminal or network side device to execute the method described in each embodiment of the present application.

The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims (38)

1. A tuning indication method, characterized by comprising: The first device sends first information to the second device; The first device receives the indication information sent by the second device; Wherein, the first information is used to determine the indication information; The indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter. 2. The method according to claim 1, wherein the indication information is sent by at least one of the following: Downlink control information DCI, media access control control element MAC CE, sidelink control information SCI, preamble code. 3. The method according to claim 2, characterized in that the method further comprises: The first device receives a first signal sent by a third device; The first device modulates, demodulates or stores energy on the first signal based on the indication information; The third device and the second device are the same device, or the third device and the second device are different devices. 4. The method according to claim 1, wherein the first device receives the indication information sent by the second device, including at least one of the following: The first device receives the indication information sent by the second device through radio resource control RRC signaling, where the information unit in the RRC signaling includes the indication information; The first device receives the indication information sent by the second device through first downlink control information DCI signaling, where the indication information indicates a TCI state in a transmission configuration indication TCI state pool; The first device receives the indication information sent by the second device through a media access control control element MAC CE, where the indication information indicates a TCI state in a TCI state pool; The first device receives the indication information sent by the second device through the second DCI signaling, where the indication information indicates one TCI state among N TCI states, where the N TCI states are selected by the MAC CE from M TCI states in the TCI state pool, where 1≤N≤M, and N and M are positive integers; The TCI state pool is obtained by RRC configuration, and each TCI state in the TCI state pool corresponds to a group of indication parameters, and each group of indication parameters includes at least one of the following: tuning matching mode, tuning object, and tuning parameter. 5. The method according to any one of claims 1 to 4, characterized in that the indication information indicates at least two tuning parameters, and each of the at least two tuning parameters corresponds to a time unit; The method further comprises: In a first time unit, the first device measures a reference signal with a first tuning parameter to obtain a first reference signal measurement amount, where the first tuning parameter is a tuning parameter corresponding to the first time unit; In a case where the first reference signal measurement quantity is greater than the second reference signal measurement quantity, the first device modulates, demodulates or stores energy on the first signal based on the first tuning parameter; The second reference signal measurement amount is a reference signal measurement amount obtained by the first device measuring the reference signal with a second tuning parameter in a second time unit; the second time unit is a time unit other than the first time unit in the indication information, and the second tuning parameter is a tuning parameter corresponding to the second time unit; The first information is sent from a third device to the first device, and the third device and the second device are the same device, or the third device and the second device are different devices. 6 . The method according to claim 3 , wherein the first signal comprises a carrier signal or a reference signal. 7. The method according to claim 6, wherein the first device modulates the first signal based on the indication information, comprising: The first device modulates the first signal based on the indication information to obtain a first modulated signal; The method further comprises: The first device sends the first modulated signal to a fourth device; The fourth device and the second device are the same device; or, the fourth device and the second device are different devices; or, the fourth device and the third device are the same device; or, the fourth device and the third device are different devices. 8. The method according to any one of claims 3 or 5-7, characterized in that: In the case where the third device and the second device are different devices, the third device is a device controlled by the second device; Alternatively, when the third device and the second device are different devices, the first signal is forwarded by the second device to the first device via the third device. 9. The method according to claim 7, characterized in that: In the case where the third device and the second device are different devices, at least one of the third device and the fourth device is further used to receive the indication information sent by the second device; Alternatively, when the third device and the second device are different devices, the first signal is forwarded by the fifth device to the first device via the third device, and at least one of the third device, the fourth device and the fifth device is used to receive the indication information sent by the second device. 10. The method according to any one of claims 1 to 9, wherein the first device receives the indication information sent by the second device, comprising any one of the following: The first device receives indication information directly sent by the second device; The first device receives indication information forwarded by the second device through the sixth device. 11. The method according to any one of claims 1-10, characterized in that the first information comprises at least one of the following: capability information of the first device, environmental parameter information, reference signal measurement information, and a reference signal. 12. The method according to claim 11, characterized in that The capability information of the first device is used to indicate at least one of the following: Tunable capability, device type, frequency deviation capability, oscillator capability, number of load impedances, impedance value, power amplifier PA parameters, and rectifier parameters. 13. The method according to claim 12, characterized in that The tunable capability indicates at least one of the following: whether the tunable capability exists, the dynamic range of the tunable tuner, the accuracy of the tunable tuner, and the tuning parameter type of the tunable tuner; Alternatively, the device type is divided according to whether it has carrier generation capability; Alternatively, the frequency deviation capability indicates at least one of the following: duration of the first level, a switching period of the first level, a frequency modulation capability of the varactor diode, and a hardware capability related to the frequency modulation capability; Alternatively, the oscillator capability indicates at least one of the following: crystal oscillator frequency, clock frequency, and oscillator stability. 14. The method according to any one of claims 1 to 13, characterized in that The tuning and matching mode includes matching or non-matching; Alternatively, the tuning object includes at least one of the following: antenna tuning, matching circuit tuning, load impedance tuning, and other circuit tuning; Alternatively, the tuning parameter includes at least one of the following: a capacitance value of the tunable network, an inductance value of the tunable network, a resistance value of the tunable network, and a selection of load impedance. 15. The method according to any one of claims 1 to 14, characterized in that The first device includes any one of the following: a tag, a first terminal, a transmitter of a backscattered signal; Alternatively, the second device includes any one of the following: a base station, a relay, a second terminal, a reader/writer, a radio frequency source device, and a receiving end of a backscattered signal. 16. The method according to any one of claims 1-15, characterized in that the indication information is also used to indicate energy storage parameters. 17. A tuning indication method, characterized by comprising: The second device receives the first information sent by the first device; The second device determines indication information according to the first information; The second device sends the indication information to the first device; The indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter. 18. The method according to claim 17, wherein the indication information is sent by at least one of the following: Downlink control information DCI, media access control control element MAC CE, sidelink control information SCI, preamble code. 19. The method according to claim 17, wherein the second device sends the indication information to the first device, comprising at least one of the following: The second device sends the indication information through radio resource control RRC signaling, and the information unit in the RRC signaling includes the indication information; The second device sends the indication information through first downlink control information DCI signaling, where the indication information indicates a TCI state in a transmission configuration indication TCI state pool; The second device sends the indication information through a media access control control element MAC CE, where the indication information indicates a TCI state in a TCI state pool; The second device sends the indication information through second DCI signaling, where the indication information indicates one TCI state among N TCI states, where the N TCI states are selected by the MAC CE from M TCI states in the TCI state pool, where 1≤N≤M, and N and M are positive integers; The TCI state pool is obtained by RRC configuration, and each TCI state in the TCI state pool corresponds to a group of indication parameters, and each group of indication parameters includes at least one of the following: tuning matching mode, tuning object, and tuning parameter. 20. The method according to any one of claims 17-19, characterized in that the indication information indicates at least two tuning parameters, and each of the at least two tuning parameters corresponds to a time unit. 21. The method according to any one of claims 17 to 20, wherein the second device determines the indication information according to the first information, comprising: The second device determines a variable parameter according to the first information; The second device determines indication information according to the variable parameter; The variable parameters include at least one of the following: The capability information of the first device, environmental parameter information, reference signal measurement information, signal frequency information, matching status of the first device, and energy storage efficiency of the first device. 22. The method according to claim 21, wherein the second device determines the variable parameter according to the first information, comprising: The second device determines a matching status of the first device according to the first information; The first information includes at least one of the following information: insufficient power information and power saving request information. 23. The method according to any one of claims 17 to 22, characterized in that the method further comprises any one of the following: Sending a first signal to the first device; Controlling a third device to send a first signal to the first device; forwarding the first signal to the first device through a third device; After receiving the first signal sent by the fifth device, sending the first signal to the first device; The indication information is used for modulation, demodulation or energy storage of the first signal. 24. The method according to claim 23, characterized in that the first signal comprises a carrier signal or a reference signal. 25. The method according to any one of claims 23-24, characterized in that the configuration information of the first signal includes at least one of the following: Signal type, time domain resources, frequency domain resources, bandwidth information, waveform type, guard interval, signal power; The signal type includes any of the following: Radio frequency RF signal for power supply, RF signal for communication, RF signal for demodulation, and mixed RF signal. 26. The method according to any one of claims 23 to 25, characterized in that the method further comprises any one of the following: The second device receives a first modulated signal sent by the first device; The second device sends the indication information to a fourth device, and the fourth device is used to receive the first modulated signal; The first modulated signal is obtained by modulating the first signal. 27. The method according to any one of claims 17 to 26, wherein the second device sends the indication information to the first device, comprising any one of the following: The second device directly sends the indication information to the first device; The second device forwards the indication information through a sixth device. 28. The method according to any one of claims 17-27, characterized in that the first information includes at least one of the following: capability information of the first device, environmental parameter information, reference signal measurement information, and a reference signal. 29. The method according to claim 28, characterized in that The capability information of the first device is used to indicate at least one of the following: Tunable capability, device type, frequency deviation capability, oscillator capability, number of load impedances, impedance value, power amplifier PA parameters, and rectifier parameters. 30. The method according to claim 29, characterized in that The tunable capability indicates at least one of the following: whether the tunable capability exists, the dynamic range of the tunable tuner, the accuracy of the tunable tuner, and the tuning parameter type of the tunable tuner; Alternatively, the device type is divided according to whether it has carrier generation capability; Alternatively, the frequency deviation capability indicates at least one of the following: duration of the first level, a switching period of the first level, a frequency modulation capability of the varactor diode, and a hardware capability related to the frequency modulation capability; Alternatively, the oscillator capability indicates at least one of the following: crystal oscillator frequency, clock frequency, and oscillator stability. 31. The method according to any one of claims 17 to 30, characterized in that The tuning and matching mode includes matching or non-matching; Alternatively, the tuning object includes at least one of the following: antenna tuning, matching circuit tuning, load impedance tuning, and other circuit tuning; Alternatively, the tuning parameter includes at least one of the following: a capacitance value of the tunable network, an inductance value of the tunable network, a resistance value of the tunable network, and a selection of load impedance. 32. The method according to any one of claims 17 to 31, characterized in that The first device includes any one of the following: a tag, a first terminal, a transmitter of a backscattered signal; Alternatively, the second device includes any one of the following: a base station, a relay, a second terminal, a reader/writer, a radio frequency source device, and a receiving end of a backscattered signal. 33. The method according to any one of claims 17-32, characterized in that the indication information is also used to indicate energy storage parameters. 34. A first device, comprising: A first sending module, used to send first information to a second device; A first receiving module, used to receive indication information sent by the second device; Wherein, the first information is used to determine the indication information; The indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter. 35. A second device, comprising: A second receiving module, used to receive first information sent by the first device; A determination module, used to determine indication information according to the first information; A second sending module, used to send the indication information to the first device; The indication information is used to indicate at least one of the following: a tuning matching method, a tuning object, and a tuning parameter. 36. A first device, characterized in that it comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the tuning indication method as described in any one of claims 1 to 16 are implemented. 37. A second device, characterized in that it comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the tuning indication method as described in any one of claims 17 to 33 are implemented. 38. A readable storage medium, characterized in that the readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, it implements the tuning indication method as described in any one of claims 1 to 16, or implements the steps of the tuning indication method as described in any one of claims 17 to 33.