Method, device and equipment for sending or receiving continuous electromagnetic waves and storage medium

Abstract

The invention discloses a method, device and equipment for sending or receiving continuous electromagnetic waves and a storage medium. The method for transmitting the continuous electromagnetic waves comprises the following steps: determining first transmitting power according to at least one of first receiving power, power loss, a power loss compensation coefficient, a first power amplification value, a waveform variable and a power adjustment amount indicated by a power control command, wherein the at least one comprises at least one of first receiving power, power loss, a power loss compensation coefficient, a first power amplification value and a waveform variable; and sending continuous electromagnetic waves to at least one terminal by using the first sending power, and sending uplink information to a second network device by the terminal by using a backscatter communication technology. According to the method, the sending power can be adaptively adjusted, and the power consumption is saved while the transmission quality of the signal is ensured.

Description

A method, device, equipment and storage medium for sending or receiving continuous electromagnetic waves Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a method, apparatus, device, and storage medium for sending or receiving continuous electromagnetic waves. Background Art

[0002] The Internet of Things (IoT) refers to the real-time collection of any object or process that needs to be monitored, connected, and interacted with through various devices and technologies such as information sensors, radio frequency identification technology, global positioning systems, infrared sensors, laser scanners, etc., and the collection of various required information such as sound, light, heat, electricity, mechanics, chemistry, biology, and location. Through various possible network access, it realizes ubiquitous connection between things and things, and things and people, and realizes intelligent perception, identification, and management of objects and processes.

[0003] Summary of the Invention

[0004] In order to transmit continuous electromagnetic waves using reasonable power, embodiments of the present disclosure provide a method, apparatus, device, and storage medium for transmitting or receiving continuous electromagnetic waves.

[0005] According to a first aspect of an embodiment of the present disclosure, a method for transmitting continuous electromagnetic waves is provided, the method being performed by a first network device, the method comprising:

[0006] Determining the first transmit power according to at least one of: a first receive power, a power loss, a power loss compensation coefficient, a first power amplification value, a waveform variable, and a power adjustment amount indicated by a power control command;

[0007] Using the first transmission power, continuous electromagnetic waves are sent to at least one terminal, and the terminal uses backscatter communication technology to send uplink information to the second network device.

[0008] According to a second aspect of an embodiment of the present disclosure, a method for receiving continuous electromagnetic waves is provided, which is performed by a terminal. The method includes:

[0009] receiving a continuous electromagnetic wave transmitted by a first network device, wherein the continuous electromagnetic wave is transmitted using a first transmission power, wherein the first transmission power is determined based on at least one of: a first received power, a power loss, a power loss compensation coefficient, a first power amplification value, a waveform variable, and a power adjustment amount indicated by a power control command;

[0010] The uplink information is sent to the second network device using a backscatter communication technology.

[0011] According to a third aspect of an embodiment of the present disclosure, there is provided a communication apparatus, configured in a first network device, the apparatus comprising:

[0012] The processing module is configured to: determine the first transmit power according to at least one of: a first receive power, a power loss, a power loss compensation coefficient, a first power amplification value, a waveform variable, and a power adjustment amount indicated by a power control command;

[0013] The transceiver module is configured to: use the first transmission power to send continuous electromagnetic waves to at least one terminal.

[0014] According to a fourth aspect of an embodiment of the present disclosure, there is provided a communication device, configured in a terminal, the device comprising:

[0015] The transceiver module is configured to: receive a continuous electromagnetic wave sent by a first network device, and send uplink information using backscatter communication technology, wherein the continuous electromagnetic wave is sent using a first transmission power, and the first transmission power is determined based on at least one, and the at least one includes at least one of the following: a first receiving power, a power loss, a power loss compensation coefficient, a first power amplification value, a waveform variable, and a power adjustment amount indicated by a power control command.

[0016] According to a fifth aspect of an embodiment of the present disclosure, one or more processors are provided; wherein the processor is used to execute the method described in the first aspect of the embodiment of the present disclosure.

[0017] According to a sixth aspect of an embodiment of the present disclosure, one or more processors are provided; wherein the processor is used to execute the method described in the second aspect of the embodiment of the present disclosure.

[0018] According to the seventh aspect of an embodiment of the present disclosure, a communication system is provided, including a first network device and a terminal, wherein the first network device is configured to implement the method described in the first aspect of the embodiment of the present disclosure, and the terminal is configured to implement the method described in the second aspect of the embodiment of the present disclosure.

[0019] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is provided, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the first aspect or the second aspect of the embodiment of the present disclosure.

[0020] In the method provided in the embodiment of the present disclosure, the transmission power can be adaptively adjusted to save power consumption while ensuring the transmission quality of the signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0022] 1A and 1B are schematic diagrams of a communication system architecture provided according to an embodiment of the present disclosure.

[0023] FIG2 is a schematic diagram of a method for sending or receiving continuous electromagnetic waves according to an embodiment of the present disclosure.

[0024] 3A and 3B are flowcharts of a method for sending or receiving continuous electromagnetic waves according to an embodiment of the present disclosure.

[0025] FIG4 is a flowchart of a method for sending or receiving continuous electromagnetic waves according to an embodiment of the present disclosure.

[0026] 5A and 5B are schematic structural diagrams of a communication device provided according to an embodiment of the present disclosure.

[0027] 6A and 6B are schematic structural diagrams showing a communication device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] Embodiments of the present disclosure provide a method, apparatus, device, and storage medium for sending or receiving continuous electromagnetic waves.

[0029] In a first aspect, an embodiment of the present disclosure provides a method for sending continuous electromagnetic waves, performed by a first network device, the method comprising:

[0030] Determining the first transmit power according to at least one of: a first receive power, a power loss, a power loss compensation coefficient, a first power amplification value, a waveform variable, and a power adjustment amount indicated by a power control command;

[0031] Using the first transmission power, continuous electromagnetic waves are sent to at least one terminal, and the terminal uses backscatter communication technology to send uplink information to the second network device.

[0032] In combination with some embodiments of the first aspect, in some embodiments, the at least one includes: the maximum transmission power of the first network device.

[0033] In conjunction with some embodiments of the first aspect, in some embodiments, the first transmit power is a minimum value of the following two:

[0034] a difference between the first value and the first power amplification value;

[0035] the maximum transmit power of the first network device;

[0036] The first value is the sum of the following: the first received power, the product of the power loss and the power loss compensation coefficient, the waveform variable, and the power adjustment amount indicated by the power control command.

[0037] In conjunction with some embodiments of the first aspect, in some embodiments, the first transmit power is a minimum value of the following two:

[0038] First value;

[0039] the maximum transmit power of the first network device;

[0040] The first value is the sum of the following: the first received power, the product of the power loss and the power loss compensation coefficient, the waveform variable, and the power adjustment amount indicated by the power control command.

[0041] In combination with some embodiments of the first aspect, in some embodiments, the first receiving power is related to the receiving power expected by at least one second network device.

[0042] In conjunction with some embodiments of the first aspect, in some embodiments, the at least one second network device expects the same received power, and the first received power is the received power expected by any one of the second network devices;

[0043] Alternatively, the at least one second network device expects a different reception power, and the first reception power is calculated based on the reception power expected by the at least one second network device.

[0044] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0045] First configuration information is received, where the first configuration information is used to configure an expected receiving power of the at least one second network device.

[0046] In combination with some embodiments of the first aspect, in some embodiments, the first receiving power consists of a second receiving power and a third receiving power, wherein the second receiving power is the normalized power within the unit frequency domain bandwidth, and the third receiving power is the power increment calculated based on the second value, and the second value is the number of unit frequency domain bandwidths occupied by the uplink information in the target transmission opportunity.

[0047] In conjunction with some embodiments of the first aspect, in some embodiments,

[0048] The normalized power corresponding to the at least one second network device is the same, and the second received power is the normalized power corresponding to any one of the second network devices;

[0049] Alternatively, the normalized power corresponding to the at least one second network device is different, and the second receiving power is calculated based on the normalized power corresponding to the at least one second network device.

[0050] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0051] Obtain normalized power corresponding to the at least one second network device.

[0052] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0053] Calculating the second value according to the uplink channel bandwidth of the at least one terminal;

[0054] Alternatively, the second value is determined according to a protocol agreement.

[0055] In combination with some embodiments of the first aspect, in some embodiments, the power loss is: the difference between the second transmitting power and the fourth receiving power; wherein, the second transmitting power is the historical transmitting power of the first network device sending continuous electromagnetic waves to the at least one terminal, and the fourth receiving power is the historical receiving power of the at least one second network device receiving the uplink signal of the at least one terminal.

[0056] In combination with some embodiments of the first aspect, in some embodiments, the fourth receiving power is the difference between the historical receiving power and the second power amplification value, the historical receiving power is the historical receiving power of the uplink signal received by the at least one second network device from the at least one terminal, and the second power amplification value is the power amplification value of the backscattered signal of the terminal in the historical transmission opportunity.

[0057] In combination with some embodiments of the first aspect, in some embodiments, the number of the at least one terminal is greater than 1, the at least one terminal corresponds to the same second network device, the fourth receiving power is the average value, minimum value, or maximum value of the receiving power of the second network device receiving uplink information from different terminals, the at least one terminal corresponds to different second network devices, and the fourth receiving power is the average value, minimum value, or maximum value of the receiving power of the different second network devices receiving uplink information from different terminals.

[0058] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0059] Second configuration information is received, where the second configuration information is used to configure the fourth receiving power.

[0060] In conjunction with some embodiments of the first aspect, in some embodiments, the power loss compensation coefficient is configured for one of the following units:

[0061] a first network device;

[0062] A channel among the multiple channels corresponding to the first network device;

[0063] a second network device;

[0064] terminal.

[0065] In combination with some embodiments of the first aspect, in some embodiments, the terminal has a power amplification capability, and when the number of the at least one terminal is 1, the first power amplification value is the power amplification value of the terminal for the backscattered signal during the target transmission opportunity.

[0066] In combination with some embodiments of the first aspect, in some embodiments, the number of the at least one terminal is greater than 1, and the first power amplification value is the average value, minimum value, or maximum value of the power amplification values ​​used by different terminals.

[0067] In combination with some embodiments of the first aspect, in some embodiments, the waveform variable is positively correlated with a first data transmission amount, where the first data transmission amount is a data transmission amount per unit resource corresponding to the uplink waveform used by the terminal.

[0068] In combination with some embodiments of the first aspect, in some embodiments, the power adjustment amount is a power adjustment increment, or a power adjustment decrement.

[0069] In a second aspect, an embodiment of the present disclosure provides a method for receiving continuous electromagnetic waves, performed by a terminal, the method comprising:

[0070] receiving a continuous electromagnetic wave transmitted by a first network device, wherein the continuous electromagnetic wave is transmitted using a first transmission power, wherein the first transmission power is determined based on at least one of: a first received power, a power loss, a power loss compensation coefficient, a first power amplification value, a waveform variable, and a power adjustment amount indicated by a power control command;

[0071] The uplink information is sent to the second network device using a backscatter communication technology.

[0072] In a third aspect, an embodiment of the present disclosure provides a communication device, configured in a first network device, the device comprising:

[0073] The processing module is configured to: determine the first transmit power according to at least one of: a first receive power, a power loss, a power loss compensation coefficient, a first power amplification value, a waveform variable, and a power adjustment amount indicated by a power control command;

[0074] The transceiver module is configured to: use the first transmission power to send continuous electromagnetic waves to at least one terminal.

[0075] In a fourth aspect, an embodiment of the present disclosure provides a communication device, configured in a terminal, the device comprising:

[0076] The transceiver module is configured to: receive a continuous electromagnetic wave sent by a first network device, and send uplink information using backscatter communication technology, wherein the continuous electromagnetic wave is sent using a first transmission power, and the first transmission power is determined based on at least one, and the at least one includes at least one of the following: a first receiving power, a power loss, a power loss compensation coefficient, a first power amplification value, a waveform variable, and a power adjustment amount indicated by a power control command.

[0077] In a fifth aspect, an embodiment of the present disclosure provides a communication device, including a processor and a memory, wherein:

[0078] The memory is used to store computer programs;

[0079] The processor is configured to execute the computer program to implement the method according to any one of the first aspects.

[0080] In a sixth aspect, an embodiment of the present disclosure provides a communication device, including a processor and a memory, wherein:

[0081] The memory is used to store computer programs;

[0082] The processor is configured to execute the computer program to implement the method according to any one of the second aspects.

[0083] In a seventh aspect, an embodiment of the present disclosure provides a communication system, comprising a first network device and a terminal, wherein the first network device is configured to execute the method described in the first aspect, and the terminal is configured to execute the method described in the second aspect.

[0084] In an eighth aspect, an embodiment of the present disclosure provides a computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium. When the instructions are called and executed by a processor, the processor executes the method as described in any one of the first aspect or the method as described in any one of the second aspect.

[0085] In a ninth aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method according to the first or second aspect.

[0086] The embodiments of the present disclosure are now further described with reference to the accompanying drawings and specific implementation methods.

[0087] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible implementations consistent with the present disclosure. Rather, they are merely examples of devices and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0088] The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present disclosure. The singular forms "a," "an," and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0089] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first indication information may also be referred to as the second indication information, and similarly, the second indication information may also be referred to as the first indication information. Depending on the context, the words "if" and "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0090] The embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be understood as limiting the present disclosure.

[0091] In some embodiments, the first device is a terminal, the second device is a network device, and the fourth device is a charging node.

[0092] As shown in FIG1A , the method provided in the embodiment of the present disclosure may be applied to a wireless communication system 100, which may include a first network device 101, a second network device 102, a third network device 103, and a terminal 104. It should be noted that the wireless communication system 100 may also include other devices, and this application does not limit the devices included in the wireless communication system 100.

[0093] The wireless communication system 100 is applicable to both low-frequency and high-frequency scenarios. Application scenarios of the wireless communication system 100 include, but are not limited to, long-term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, worldwide interoperability for microwave access (WiMAX) communication systems, cloud radio access networks (CRAN) systems, future fifth-generation (5G) systems, new radio (NR) communication systems, future evolved public land mobile networks (PLMN) systems, and Internet of Things systems.

[0094] The first network device 101 may be a device for sending an excitation signal to the first device. In an example, the second network device 102 is a continuous wave node (CWN), and the excitation signal is a continuous electromagnetic wave.

[0095] The second network device 102 may be a node for receiving uplink information of a terminal.

[0096] The third network device 103 may be a network node such as a base station.

[0097] Terminal 104 may be a terminal, an access terminal, a terminal unit, a terminal station, a mobile station (MS), a remote station, a remote terminal, a mobile terminal, a wireless communication device, a terminal agent, an Internet of Things terminal, etc. The terminal 104 may have wireless transceiver capabilities, and may communicate (e.g., wirelessly) with one or more network devices of one or more communication systems and receive network services provided by the network devices, where the network devices include but are not limited to the illustrated network device 102. Terminal 104 may also be an Internet of Things terminal. Compared to ordinary terminals, Internet of Things terminals have lower complexity, manufacturing costs, and maintenance costs. Internet of Things terminals may not be equipped with batteries and may be powered by receiving electromagnetic signals. Internet of Things terminals may also have a small amount of battery with electrical storage capabilities, which does not require manual charging but instead obtains battery energy from the outside, for example, by obtaining battery energy from external electromagnetic waves, thermal energy, kinetic energy, etc.

[0098] In some embodiments, different terminals 104 have different capabilities. For example, different terminals 104 may have different types and working modes, and their power acquisition and storage capabilities may also be different.

[0099] The capabilities of the first type of terminal (which may be referred to as device A) include: being unable to actively send uplink signals.

[0100] In some possible embodiments, the first type of terminal (which may be referred to as device A) may or may not have energy storage capability; may or may not have a downlink amplification function, or may or may not have an uplink amplification function.

[0101] In some possible embodiments, the first type of terminal (which may be referred to as device A) can only passively send uplink signals.

[0102] For example, after receiving the excitation signal sent by the network device, the first type of terminal uses the backscattering working mode to send an uplink signal. If the first type of terminal does not receive the excitation signal sent by the network device, it cannot actively send an uplink signal.

[0103] The second type of terminal (referred to as device B) has the following capabilities: it has energy storage capability, cannot actively send uplink signals, but can have downlink amplification function and / or uplink amplification function.

[0104] The capabilities of the third type of terminal (which may be referred to as device C) include: energy storage capability and the ability to actively send uplink signals.

[0105] In one example, the third type of terminal has a radio frequency (RF) module that actively sends uplink signals.

[0106] Of the three types of terminals mentioned above, the third type has the strongest capabilities. The first type has the weakest capabilities and the lowest cost. Furthermore, since the first and second types of terminals can only operate in backscatter mode and cannot actively send uplink signals, their supported coverage range is smaller. However, the power consumption of the first and second types of terminals in this operating mode is lower than that of the third type of terminals.

[0107] In some embodiments, the terminal 104 is an Ambient-IoT.

[0108] In some embodiments, AmbientIoT uses backscatter communications technology, which is one of the key technologies for building a green, energy-saving, low-cost, and flexibly deployable future Internet of Things, and is an important means to achieve "intelligent connection of all things".

[0109] Backscatter communication utilizes the principle of RF signal backscattering to create an extremely low-power modulation and transmission technology. Since RF signals are partially reflected when they reach surfaces, the transmitting node adjusts the matching between the receiving antenna and the impedance based on the intended transmission information, enhancing the reflection of the incoming RF signal. The node then modulates the acquired sensory data onto the reflected signal, completing the data transmission.

[0110] During backscatter communication, a terminal receives a radio frequency signal. Its internal circuitry modulates the incoming electromagnetic wave to transmit the information, using methods such as load impedance modulation. The modulated electromagnetic wave carrying the information is then transmitted. Information can be modulated using a variety of methods, including amplitude shift keying (ASK), frequency shift keying (FSK), and phase shift keying (PSK).

[0111] For terminals using backscatter communication, the working process is as follows: the network device sends a downlink instruction to the terminal. After receiving the downlink instruction, the terminal sends the corresponding response information to the network device or performs the corresponding operation. When the terminal sends the response information, it needs the CWN to provide it with electromagnetic waves for reflection. The CWN can be a separate node, or it can be a base station or intermediate node (such as UE) that communicates with the terminal. Continuous electromagnetic waves (CW) generally have a constant amplitude. The frequency of the electromagnetic wave reflected by the terminal can be exactly the same as the frequency of the continuous electromagnetic wave, or there can be some offset. The value of the offset is related to the hardware characteristics of the terminal. The offset may be a fixed value, or one of multiple fixed values ​​if the terminal hardware can support it. The offset may also be a value that can be dynamically adjusted.

[0112] Compared with other communication technologies, backscatter communication has the following advantages: it does not require complex RF structures, reduces the use of devices such as power amplifiers, high-precision crystal oscillators, duplexers, and high-precision filters, and does not require complex baseband processing. Therefore, backscatter communication technology can simplify terminal design and significantly reduce terminal node costs.

[0113] In some embodiments, as shown in FIG1B , the IoT terminal may have four types of links. Specifically:

[0114] The first link is the downlink for transmitting downlink data, which can be called link1;

[0115] The second link is the uplink for transmitting uplink data and can be called link2;

[0116] The third link is used to receive continuous electromagnetic waves and can be called link 3;

[0117] The fourth link is a link for receiving charging signals, which may be referred to as link 4.

[0118] The four nodes involved in these four links can be the same node, or two, three, or four separate nodes.

[0119] For example, the node connected by the first link is a downlink signal node (DSN), the node connected by the second link is an uplink receiver (UR), the node connected by the third link is a CWN, and the node connected by the fourth link is an energy source node (ESN).

[0120] The fourth link (Link 4) may be controlled by the network. For example, the third network device 103 can control the ESN to enable or disable charging for the terminal. The energy in the fourth link (Link 4) can come from electromagnetic waves or non-electromagnetic charging signals. In this case, it can be considered that the ESN can better cooperate with network scheduling and other functions to ensure terminal charging while minimizing the impact on terminal communication.

[0121] The fourth link (Link 4) may also be uncontrolled by the network. In other words, the terminal can flexibly collect energy based on its capabilities and energy sources in the actual environment. For example, it can collect energy from electromagnetic waves or non-electromagnetic waves that are not controlled by the network. In this case, the fourth link (Link 4) can be considered non-existent.

[0122] The following embodiments of the present disclosure are applicable to terminals having energy storage capabilities, and may be applicable to a first type of terminal (which may be referred to as device A), a second type of terminal (which may be referred to as device B), or a third type of terminal (which may be referred to as device C).

[0123] In the disclosed embodiments, when terminal 104 transmits uplink information using backscatter communication, the uplink transmission power is largely dependent on the power of the continuous electromagnetic waves transmitted by the CWN. To ensure that the power of the uplink information received by the UR at terminal 104 is within a reasonable range, the CWN must properly control the power of the continuous electromagnetic waves.

[0124] The present disclosure provides a method for transmitting or receiving continuous electromagnetic waves. FIG2A is a flow chart of a method for transmitting or receiving continuous electromagnetic waves according to an embodiment of the present disclosure. As shown in FIG2A , the method includes the following steps:

[0125] Step S2101: The first network device 101 receives configuration information.

[0126] In some embodiments, the configuration information includes first configuration information, where the first configuration information is used to configure the expected receiving power of the at least one second network device 102 .

[0127] In some embodiments, when the expected receiving powers of the at least one second network device 102 are the same, only one power value is configured in the first configuration information.

[0128] In some embodiments, when the expected receiving powers of the at least one second network device 102 are different, more than one power value is configured in the first configuration information, and each power value corresponds to a different second network device 102 .

[0129] In some embodiments, the configuration information includes second configuration information, where the second configuration information is used to configure a fourth receiving power Pr4, and the fourth receiving power Pr4 is used to calculate the power loss L.

[0130] In some embodiments, the first network device 101 receives the configuration information sent by the second network device 102 .

[0131] In some embodiments, the first network device 101 receives the configuration information sent by the third network device 103 .

[0132] In some examples, the first network device 101 is a CWN, the second network device 102 is a UR, and the third network device 103 is a base station.

[0133] In some embodiments, the third configuration information is used to configure the normalized power of the target received power of the second network device 102 within a unit frequency domain bandwidth.

[0134] In some embodiments, the configuration information includes third configuration information, where the third configuration information is used to configure normalized power corresponding to at least one second network device 102. When the uplink information of the terminal 104 corresponds to different frequency domain bandwidths, the normalized power is the normalized power of the target received power of the second network device 102 within a unit frequency domain bandwidth.

[0135] In some embodiments, when the normalized powers corresponding to the at least one second network device 102 are the same, only one normalized power is configured in the third configuration information.

[0136] In some embodiments, when the normalized powers corresponding to the at least one second network device 102 are different, more than one normalized power is configured in the third configuration information, and each normalized power corresponds to a different second network device 102 .

[0137] In some embodiments, the configuration information includes fourth configuration information, and the fourth configuration information is used to configure the power loss compensation coefficient k.

[0138] In some embodiments, the power loss compensation coefficient k can be 0 or 1.

[0139] In some embodiments, the power loss compensation coefficient k is greater than 0 and less than 1.

[0140] The power loss compensation factor is configured for one of the following units:

[0141] The first network device, that is, different first network devices can configure the power compensation coefficient respectively;

[0142] The channels among the multiple channels corresponding to the first network device, that is, the power compensation coefficient can be configured for different channels among the multiple channels corresponding to the first network device respectively;

[0143] Second network device; that is, the power compensation coefficient can be configured separately for different second network devices;

[0144] Terminal, that is, the power compensation coefficient can be configured separately for different terminals.

[0145] In some embodiments, the configuration information includes fifth configuration information, and the fifth configuration information is used to configure the first power amplification value A.

[0146] In some embodiments, the fifth configuration information is semi-statically configured.

[0147] Since the fifth configuration information is semi-statically configured, the terminal 104 uses the first power amplification value A for a longer period of time.

[0148] In some embodiments, when receiving configuration information in step S2101, the configuration information may be received multiple times, and the configuration information received each time only includes one or more of the first to fifth configuration information.

[0149] Step S2102: The first network device 101 receives a power control command.

[0150] In some embodiments, the power control command is a power control command sent by the second network device 102 to the first network device 101 .

[0151] In some embodiments, the power control command is a power control command sent by the second network device 102 to the first network device 101 via the third network device 103 .

[0152] In some embodiments, the power control command indicates a power adjustment amount.

[0153] In some embodiments, the power adjustment amount M is a power adjustment increment, or a power adjustment decrement.

[0154] Step S2103: The first network device 101 determines a first transmission power.

[0155] In some embodiments, the first network device 101 determines the first transmission power based on at least one, and the at least one includes at least one of the following: first received power, power loss, power loss compensation coefficient, first power amplification value, waveform variable, and power adjustment amount indicated by the power control command.

[0156] In some embodiments, the first network device 101 determines the first transmission power based on the sum of at least one, wherein the at least one includes at least one of the following: first receiving power, power loss, power loss compensation coefficient, waveform variable, and power adjustment amount indicated by the power control command.

[0157] In one example, the sum of the first receiving power, the power loss, the waveform variable, and the power adjustment amount indicated by the power control command is used as the first transmitting power.

[0158] It can be expressed as follows: Ps1=Pr1+L+C+M (1)

[0159] Where Ps1 is the first transmit power, Pr1 is the first receive power, L is the power loss, C is the waveform variable, and M is the power adjustment indicated by the power control command. This example is suitable for terminals that use power amplification or semi-statically use a fixed power amplification value. Because the terminal consistently uses a fixed power amplification value, the impact of changes in the power amplification value can be ignored when calculating the current CW power control based on historical reception conditions.

[0160] In one example, the sum of the first receiving power, the product of the power loss and the power loss compensation coefficient, the waveform variable, and the power adjustment amount indicated by the power control command is used as the first transmitting power.

[0161] It can be expressed as follows: Ps1=Pr1+k*L+C+M (2)

[0162] Where k is the power loss compensation coefficient. This example is suitable for terminals that use power amplification or semi-statically use a fixed power amplification value. Because the terminal consistently uses a fixed power amplification value, the impact of changes in the power amplification value can be ignored when calculating the current CW power control based on historical reception conditions.

[0163] In some embodiments, the first network device 101 determines the first value according to a sum of at least one, the at least one comprising at least one of the following: the first received power, the power loss, the power loss compensation coefficient, the waveform variable, and the power adjustment amount indicated by the power control command;

[0164] The first transmission power is determined according to the difference between the first value and the first power amplification value.

[0165] In one example, the sum of the first receiving power, power loss, waveform variable, and power adjustment amount indicated by the power control command is taken as the first value, and the difference between the first value and the first power amplification value is determined as the first transmitting power.

[0166] It can be expressed as follows: Ps1=Pr1+L+C+MA (3)

[0167] Wherein, A is the first power amplification value.

[0168] In one example, the sum of the first receiving power, the product of the power loss and the power loss compensation coefficient, the waveform variable, and the power adjustment amount indicated by the power control command is taken as the first value, and the difference between the first value and the first power amplification value is determined as the first transmitting power.

[0169] It can be expressed as follows: Ps1=Pr1+k*L+C+MA (4)

[0170] Wherein, A is the first power amplification value.

[0171] In one example, the first transmit power is the minimum of:

[0172] a difference between the first value and the first power amplification value;

[0173] The maximum transmit power of the first network device.

[0174] It can be expressed as follows: Ps1 = min{Pmax, Pr1 + k*L + C + MA} (5)

[0175] Wherein, Pmax is the maximum transmission power of the first network device.

[0176] In some embodiments, Pmax is agreed upon by a protocol or configured by the third network device 103 .

[0177] In one example, the first transmit power is the minimum of:

[0178] First value;

[0179] The maximum transmit power of the first network device.

[0180] It can be expressed as follows: Ps1 = min{Pmax, Pr1 + k*L + C + M} (5)

[0181] Wherein, Pmax is the maximum transmission power of the first network device.

[0182] In some embodiments, Pmax is agreed upon by a protocol or configured by the third network device 103. This example is suitable for situations where the terminal uses power amplification or semi-statically uses a fixed power amplification value. Because the terminal always uses a fixed power amplification value, the impact of changes in the power amplification value can be ignored when calculating the current CW power control based on historical reception conditions.

[0183] In some embodiments, the first received power Pr1 is related to the received power expected by the at least one second network device 102 .

[0184] In some embodiments, the second network device 102 is configured to receive uplink information from at least one terminal 104 .

[0185] In one example, when the uplink information uses an on-off keying (OOK) modulation scheme, the first received power Pr1 is the average power of high-level symbols.

[0186] In some embodiments, when the at least one second network device 102 expects the same received power, the first received power Pr1 is the received power expected by any one of the second network devices 102 ;

[0187] The at least one second network device 102 expects different receiving powers, and the first receiving power Pr1 is calculated based on the at least one second network device 102 expects receiving power.

[0188] In some embodiments, the first receiving power Pr1 is calculated by a logic algorithm according to the expected receiving power of the at least one second network device 102 .

[0189] In one example, the logic algorithm is to calculate one of the following: average value, maximum value, and minimum value.

[0190] In some embodiments, the uplink information of the terminal 104 corresponds to different frequency domain bandwidths.

[0191] In some embodiments, the first receiving power Pr1 is composed of a second receiving power Pr2 and a third receiving power Pr3, wherein, when the uplink signal of the terminal 104 corresponds to different frequency domain bandwidths, the second receiving power Pr2 is the normalized power of the target receiving power of the second network device 102 within the unit frequency domain bandwidth, and the third receiving power Pr3 is the power increment calculated based on the second value, and the second value is the number of unit frequency domain bandwidths occupied by the uplink information in the target transmission opportunity.

[0192] In some embodiments, when the normalized powers corresponding to the at least one second network device 102 are the same, the second received power Pr2 is the normalized power corresponding to any one of the second network devices;

[0193] In some embodiments, the normalized power corresponding to the at least one second network device 102 is different, and the second received power Pr2 is calculated based on the normalized power corresponding to the at least one second network device 102 .

[0194] In an example, the second received power Pr2 is a maximum value or an average value of normalized powers corresponding to the at least one second network device 102 .

[0195] In some embodiments, the normalized power corresponding to the at least one second network device 102 is a default value, and the first network device 101 has learned the default value.

[0196] In some embodiments, the first network device 101 calculates the second value according to the uplink channel bandwidth of the at least one terminal 104 .

[0197] In some embodiments, the first network device 101 corresponds to one terminal 104 , and when the bandwidth of an uplink channel of the terminal 104 is known, the second value is calculated according to the bandwidth of the uplink channel.

[0198] In some embodiments, the first network device 101 corresponds to multiple terminals 104 , and when the bandwidths of the uplink channels of the multiple terminals 104 are known, the second value is calculated according to the maximum value of the bandwidths of the uplink channels of the multiple terminals 104 .

[0199] In some embodiments, the first network device 101 determines the second value according to a protocol agreement.

[0200] In some embodiments, the power loss L is: the difference between the second transmission power Ps2 and the fourth reception power Pr4, wherein the second transmission power is the historical transmission power of the first network device 101 sending continuous electromagnetic waves to the at least one terminal 104, and the fourth reception power Pr4 is the historical reception power of the at least one second network device 102 receiving the uplink signal of the at least one terminal 104.

[0201] In some embodiments, the fourth receiving power Pr4 is a historical average power of an uplink signal of the at least one terminal 104 received by the at least one second network device 102 .

[0202] In some embodiments, when the uplink information uses an on-off keying (OOK) modulation scheme, the fourth received power Pr4 is the average power of the received high-level symbols.

[0203] In some embodiments, the fourth received power is the difference between a historical received power and a second power amplification value, wherein the historical received power is the historical received power of the at least one second network device receiving an uplink signal of the at least one terminal, and the second power amplification value is the power amplification value of the terminal for backscattered signals during historical transmission opportunities. In some embodiments, the terminal semi-statically uses a fixed power amplification value, that is, the terminal uses the same power amplification value in both historical transmissions and current transmissions. The fourth received power is the historical received power, and the second power amplification value does not need to be considered.

[0204] It should be noted that the terminal 101 performs power amplification on the backscattered signal, which refers to performing power amplification on the uplink signal during uplink transmission.

[0205] In some implementations, the second power amplification value is a unique power amplification value corresponding to the power amplification capability of the terminal 101 , or is one of multiple power amplification values ​​corresponding to the power amplification capability of the terminal 101 .

[0206] In some implementations, the terminal 101 corresponds to a unique power amplification value, and the terminal 101 uses the power amplification value to power amplify the uplink signal during uplink transmission, or does not power amplify the uplink signal.

[0207] In some embodiments, the terminal 101 supports multiple different power amplification gain levels, and different power amplification gain levels correspond to different power amplification values. The terminal 101 uses a power amplification value corresponding to a power amplification gain level to power amplify the uplink signal during uplink transmission, or does not power amplify the uplink signal.

[0208] In some embodiments, the first network device 101 corresponds to multiple terminals, different terminals correspond to the same at least one second network device, and the fourth receiving power Pr4 is the average value, minimum value, or maximum value of the receiving power of the at least one second network device receiving uplink information from different terminals. Different terminals correspond to different second network devices, and the fourth receiving power Pr4 is the average value, minimum value, or maximum value of the receiving power of the different second network devices receiving uplink information from different terminals.

[0209] In some embodiments, the first network device 101 corresponds to a terminal, which corresponds to at least one second network device, and the fourth receiving power Pr4 is the average value, minimum value, or maximum value of the receiving power of the at least one second network device receiving uplink information from the terminal.

[0210] It should be noted that power loss L is not equal to transmission path loss. Power loss L consists of three parts: the first part is the path loss from first network device 101 to terminal 104; the second part is the power loss when terminal 104 performs backscatter communication; and the third part is the path loss from terminal 104 to second network device 102. Transmission path loss only includes the first or third part.

[0211] In some embodiments, the power loss compensation coefficient is configured for one of the following units:

[0212] The first network device, that is, different first network devices can configure the power compensation coefficient respectively;

[0213] A channel among the multiple channels corresponding to the first network device; that is, the power compensation coefficient can be configured for different channels among the multiple channels corresponding to the first network device respectively;

[0214] Second network device; that is, the power compensation coefficient can be configured separately for different second network devices;

[0215] Terminal, that is, the power compensation coefficient can be configured separately for different terminals.

[0216] In some implementations, the terminal 104 has a power amplification capability. When the first network device 101 corresponds to one terminal 104, the first power amplification value A is the power amplification value of the terminal for the backscattered signal during the target transmission opportunity.

[0217] In some implementations, when the first network device 101 corresponds to multiple terminals 104 , the first power amplification value A is an average value, a minimum value, or a maximum value of power amplification values ​​used by different terminals 104 .

[0218] In some implementations, the terminal 101 corresponds to a unique power amplification value, and the terminal 101 uses the power amplification value to power amplify the uplink signal during uplink transmission, or does not power amplify the uplink signal.

[0219] In some embodiments, the terminal 101 supports multiple different power amplification gain levels, and different power amplification gain levels correspond to different power amplification values. The terminal 101 uses a power amplification value corresponding to a power amplification gain level to power amplify the uplink signal during uplink transmission, or does not power amplify the uplink signal.

[0220] In some implementations, the waveform variable C is positively correlated with a first data transmission amount, where the first data transmission amount is a data transmission amount per unit resource corresponding to the uplink waveform used by the terminal.

[0221] In some embodiments, the power adjustment amount M is a power adjustment amount indicated by a power control command.

[0222] In some embodiments, the power adjustment amount M is a power adjustment increment, or a power adjustment decrement.

[0223] Step S2104: The first network device 101 transmits continuous electromagnetic waves to at least one terminal using a first transmission power.

[0224] In some embodiments, terminal 104 receives a continuous electromagnetic wave transmitted by first network device 101, where the continuous electromagnetic wave is transmitted using a first transmit power. The first transmit power is determined based on at least one of: a first received power, power loss, a power loss compensation coefficient, a first power amplification value, a waveform variable, and a power adjustment amount indicated by a power control command.

[0225] Step S2105: The terminal sends uplink information to at least one second network device using backscatter communication technology.

[0226] The data transmission method according to the embodiment of the present disclosure may include at least one of steps S2101 to S2105. For example, steps S2103 and S2104 may be implemented as independent embodiments, and steps S2103, S2104, and S2105 may be implemented as independent embodiments, but are not limited thereto.

[0227] In some embodiments, step S2101 is optional, step S2102 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0228] FIG3A is a flow chart of a data transmission method provided according to an embodiment of the present disclosure, which is applied to the first network device 101. As shown in FIG3A , the method includes the following steps:

[0229] Step S3101: The first network device 101 receives configuration information.

[0230] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0231] Step S3102: The first network device 101 receives a power control command.

[0232] The optional implementation of step S3102 can refer to the optional implementation of step S2102 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0233] Step S3103: The first network device 101 determines a first transmission power.

[0234] The optional implementation of step S3103 can refer to the optional implementation of step S2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0235] Step S3104: The first network device 101 transmits continuous electromagnetic waves to at least one terminal using a first transmission power.

[0236] The optional implementation of step S3104 can refer to the optional implementation of step S2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0237] The data transmission method according to the embodiment of the present disclosure may include at least one of steps S3101 to S3104. For example, step S3103 and step S3104 may be implemented as independent embodiments, but are not limited thereto.

[0238] In some embodiments, step S3101 is optional, step S3102 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0239] FIG3B is a flow chart of a data transmission method provided according to an embodiment of the present disclosure, which is applied to the terminal 104. As shown in FIG3B , the method includes the following steps:

[0240] Step S3201: receiving a continuous electromagnetic wave sent by the first network device 101.

[0241] The optional implementation of step S3201 can refer to the optional implementation of step S2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0242] Step S3202: Send uplink information to at least one second network device 102 using backscatter communication technology.

[0243] The optional implementation of step S3202 can refer to the optional implementation of step S2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0244] The data transmission method according to the embodiment of the present disclosure may include at least one of steps S3201 and S3202, for example, step S3201, but not limited thereto.

[0245] In some embodiments, step S3202 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0246] FIG4 is a flow chart of a data transmission method according to an embodiment of the present disclosure, as shown in FIG4 , including the following steps:

[0247] Step S4101: A first network device determines a first transmission power.

[0248] In some embodiments, the first network device determines the first transmission power based on at least one, and the at least one includes at least one of the following: first received power, power loss, power loss compensation coefficient, first power amplification value, waveform variable, and power adjustment amount indicated by the power control command.

[0249] In some embodiments, the at least one includes: a maximum transmit power of the first network device.

[0250] In some embodiments, the first transmit power is the minimum of:

[0251] a difference between the first value and the first power amplification value;

[0252] the maximum transmit power of the first network device;

[0253] The first value is the sum of the following: the first received power, the product of the power loss and the power loss compensation coefficient, the waveform variable, and the power adjustment amount indicated by the power control command.

[0254] In some embodiments, the first transmit power is the minimum of:

[0255] First value;

[0256] the maximum transmit power of the first network device;

[0257] The first value is the sum of the following: the first received power, the product of the power loss and the power loss compensation coefficient, the waveform variable, and the power adjustment amount indicated by the power control command.

[0258] In some embodiments, the first received power is related to an expected received power of at least one second network device.

[0259] In some embodiments, the at least one second network device expects the same received power, and the first received power is the received power expected by any one of the second network devices;

[0260] The at least one second network device has a different expected receiving power, and the first receiving power is calculated based on the expected receiving power of the at least one second network device.

[0261] In some embodiments, the first network device receives first configuration information, where the first configuration information is used to configure the expected receiving power of the at least one second network device.

[0262] In some embodiments, the first received power consists of a second received power and a third received power, wherein the second received power is the normalized power within a unit frequency domain bandwidth, and the third received power is a power increment calculated based on a second value, and the second value is the number of unit frequency domain bandwidths occupied by the uplink information in the target transmission opportunity.

[0263] In some embodiments, the normalized power corresponding to the at least one second network device is the same, and the second received power is the normalized power corresponding to any one of the second network devices;

[0264] The normalized power corresponding to the at least one second network device is different, and the second receiving power is calculated based on the normalized power corresponding to the at least one second network device.

[0265] In some embodiments, the first network device obtains the normalized power corresponding to the at least one second network device.

[0266] In some embodiments, the first network device calculates the second value according to the uplink channel bandwidth of the at least one terminal, or determines the second value according to a protocol agreement.

[0267] In some embodiments, the power loss is: the difference between a second transmitting power and a fourth receiving power, wherein the second transmitting power is the historical transmitting power of the first network device sending continuous electromagnetic waves to the at least one terminal, and the fourth receiving power is the historical receiving power of the at least one second network device receiving the uplink signal of the at least one terminal.

[0268] In some embodiments, the fourth receiving power is the difference between the historical receiving power and the second power amplification value, wherein the historical receiving power is the historical receiving power of the uplink signal received by the at least one second network device from the at least one terminal, and the second power amplification value is the power amplification value of the backscattered signal by the terminal in the historical transmission opportunity.

[0269] In some embodiments, the number of the at least one terminal is greater than 1, the at least one terminal corresponds to the same second network device, the fourth receiving power is the average value, minimum value, or maximum value of the receiving power of the second network device receiving uplink information from different terminals, the at least one terminal corresponds to different second network devices, and the fourth receiving power is the average value, minimum value, or maximum value of the receiving power of the different second network devices receiving uplink information from different terminals.

[0270] In some embodiments, the first network device receives second configuration information, where the second configuration information is used to configure the fourth receiving power.

[0271] In some embodiments, the power loss compensation coefficient is configured for one of the following units:

[0272] a first network device;

[0273] A channel among the multiple channels corresponding to the first network device;

[0274] a second network device;

[0275] terminal.

[0276] In some embodiments, the terminal has a power amplification capability, and when the number of the at least one terminal is 1, the first power amplification value is the power amplification value of the terminal for the backscattered signal in the target transmission opportunity.

[0277] In some embodiments, the number of the at least one terminal is greater than 1, and the first power amplification value is an average value, a minimum value, or a maximum value of power amplification values ​​used by different terminals.

[0278] In some embodiments, the waveform variable is positively correlated with a first data transmission amount, where the first data transmission amount is a data transmission amount per unit resource corresponding to an uplink waveform used by the terminal.

[0279] In some embodiments, the power adjustment amount is a power adjustment increment, or a power adjustment decrement.

[0280] Step S4102: The first network device sends continuous electromagnetic waves to at least one terminal using a first transmission power.

[0281] Step S4103: The terminal sends uplink information to the second network device using backscatter communication technology.

[0282] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0283] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0284] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0285] Figure 5A is a schematic diagram of the structure of a communication device according to an embodiment of the present disclosure, which is applied to a first network device 101. As shown in Figure 5A, the first network device 101 may include a processing module 5101 and a transceiver module 5102. In some embodiments, the processing module 5101 is configured to determine a first transmit power based on at least one of the following: a first received power, power loss, a power loss compensation coefficient, a first power amplification value, a waveform variable, and a power adjustment amount indicated by a power control command. The transceiver module 5102 is configured to use the first transmit power to transmit continuous electromagnetic waves to at least one terminal, and the terminal transmits uplink information to a second network device using backscatter communication technology. Optionally, the processing module 5101 is configured to perform at least one of the processing steps performed by the first network device 101 in any of the above methods. Optionally, the transceiver module 5102 is configured to perform at least one of the communication steps, such as sending and / or receiving, performed by the first network device 101 in any of the above methods. These steps are not further described here.

[0286] Figure 5B is a structural diagram of a communication device according to an embodiment of the present disclosure, which is applied to the second network device 102. As shown in Figure 5B, the terminal 104 may include: a transceiver module 5201. In some embodiments, the transceiver module 5201 is configured to receive a continuous electromagnetic wave sent by the first network device, and the continuous electromagnetic wave is sent using a first transmission power, and the first transmission power is determined based on at least one of: the at least one including at least one of the following: a first receiving power, a power loss, a power loss compensation coefficient, a first power amplification value, a waveform variable, and a power adjustment amount indicated by a power control command; and, using backscatter communication technology to send uplink information to the second network device. The transceiver module 5201 is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal 104 in any of the above methods, which will not be repeated here.

[0287] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0288] Figure 6A is a schematic diagram illustrating the structure of a communication device 6100 according to an embodiment of the present disclosure. Communication device 6100 can be a terminal (e.g., a user equipment, an IoT device, etc.), a first network device, or a second network device. Communication device 6100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0289] As shown in Figure 6A, the communication device 6100 includes one or more processors 6101. Processor 6101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, baseband chip, terminal device, terminal device chip, DU or CU, etc.), execute programs, and process program data. The communication device 6100 is used to perform any of the above methods.

[0290] In some embodiments, the communication device 6100 further includes one or more memories 6102 for storing instructions. Optionally, all or part of the memories 6102 may be located outside the communication device 6100.

[0291] In some embodiments, the communication device 6100 further includes one or more transceivers 6103. When the communication device 6100 includes one or more transceivers 6103, the transceiver 6103 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 6101 performs at least one of the other steps.

[0292] In some embodiments, the transceiver 6103 may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0293] In some embodiments, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuit 6104 is connected to the memory 6102. The interface circuit 6104 may be configured to receive signals from the memory 6102 or other devices, and may be configured to send signals to the memory 6102 or other devices. For example, the interface circuit 6104 may read instructions stored in the memory 6102 and send the instructions to the processor 6101.

[0294] The communication device 6100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 6100 described in the present disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited to FIG6A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (8) others, etc.

[0295] 6B is a schematic diagram of the structure of a chip 6200 according to an embodiment of the present disclosure. If the communication device 6200 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 6200 shown in FIG6B , but the present disclosure is not limited thereto.

[0296] The chip 6200 includes one or more processors 6201 , and the chip 6200 is configured to execute any of the above methods.

[0297] In some embodiments, the chip 6200 further includes one or more interface circuits 6202. Optionally, the interface circuit 6202 is connected to the memory 6203. The interface circuit 6202 can be used to receive signals from the memory 6203 or other devices, and can be used to send signals to the memory 6203 or other devices. For example, the interface circuit 6202 can read instructions stored in the memory 6203 and send the instructions to the processor 6201.

[0298] In some embodiments, the interface circuit 6202 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 6201 performs at least one of the other steps.

[0299] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0300] In some embodiments, the chip 6200 further includes one or more memories 6203 for storing instructions. Alternatively, all or part of the memories 6203 may be located outside the chip 6200.

[0301] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 6100, the communication device 6100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

[0302] The present disclosure also provides a program product, which, when executed by the communication device 6100, enables the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0303] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods. Industrial Applicability

[0304] The transmission power can be adaptively adjusted to save power consumption while ensuring signal transmission quality.

Claims

1. A method for transmitting continuous electromagnetic waves, which is executed by a first network device, and the method includes: Determining a first transmission power according to at least one of the following: a first received power, a power loss, a power loss compensation coefficient, a first power amplification value, a waveform variable, a power adjustment amount indicated by a power control command; Using the first transmission power to transmit continuous electromagnetic waves to at least one terminal, and the terminal uses backscatter communication technology to transmit uplink information to a second network device.

2. The method according to claim 1, wherein The at least one includes: the maximum transmission power of the first network device.

3. The method according to claim 1, wherein, The first transmission power is the minimum of the following two: The difference between a first value and the first power amplification value; The maximum transmission power of the first network device; Wherein, the first value is the sum of: the first received power, the product of the power loss and the power loss compensation coefficient, the waveform variable, and the power adjustment amount indicated by the power control command.

4. The method according to claim 1, wherein The first transmission power is the minimum of the following two: The first value; The maximum transmission power of the first network device; Wherein, the first value is the sum of: the first received power, the product of the power loss and the power loss compensation coefficient, the waveform variable, and the power adjustment amount indicated by the power control command.

5. The method according to any one of claims 1 to 4, wherein The first received power is related to the received power expected by at least one second network device.

6. The method according to claim 5, wherein The received powers expected by the at least one second network device are the same, and the first received power is the received power expected by any one of the second network devices; Or, the received powers expected by the at least one second network device are different, and the first received power is calculated according to the received powers expected by the at least one second network device.

7. The method according to claim 5 or 6, wherein The method further includes: Receiving first configuration information for configuring the received power expected by the at least one second network device.

8. The method according to claim 5, wherein, The first received power consists of a second received power and a third received power, wherein the second received power is the normalized power within a unit frequency domain bandwidth, and the third received power is the power increment calculated according to a second value, and the second value is the number of unit frequency domain bandwidths occupied by the uplink information in a target transmission opportunity.

9. The method according to claim 8, wherein The normalized powers corresponding to the at least one second network device are the same, and the second received power is the normalized power corresponding to any one of the second network devices; Or, the normalized powers corresponding to the at least one second network device are different, and the second received power is calculated according to the normalized powers corresponding to the at least one second network device.

10. The method according to claim 8 or 9, wherein, The method further includes: Obtaining the normalized power corresponding to the at least one second network device.

11. The method according to any one of claims 8 to 10, wherein, The method further includes: Calculating the second value according to the uplink channel bandwidth of the at least one terminal; Or determining the second value according to protocol agreement.

12. The method according to any one of claims 1 to 11, wherein, The power loss is the difference between the second transmission power and the fourth reception power; wherein, the second transmission power is the historical transmission power of the first network device for transmitting continuous electromagnetic waves to the at least one terminal, and the fourth reception power is the historical reception power of the at least one second network device for receiving the uplink signal of the at least one terminal.

13. The method according to claim 12, wherein, The fourth reception power is the difference between the historical reception power and the second power amplification value, the historical reception power is the historical reception power of the at least one second network device for receiving the uplink signal of the at least one terminal, and the second power amplification value is the power amplification value of the terminal for the backscattered signal in the historical transmission opportunity.

14. The method according to claim 12 or 13, wherein, The number of the at least one terminal is greater than 1, the at least one terminal corresponds to the same second network device, the fourth reception power is the average value or the minimum value or the maximum value of the reception powers of the second network device for receiving uplink information from different terminals, the at least one terminal corresponds to different second network devices, and the fourth reception power is the average value or the minimum value or the maximum value of the reception powers of the different second network devices for receiving uplink information from different terminals.

15. The method according to any one of claims 12 to 14, wherein, The method further includes: Receiving second configuration information for configuring the fourth reception power.

16. The method according to any one of claims 1 to 15, wherein, The power loss compensation coefficient is configured for one of the following units: The first network device; A channel among a plurality of channels corresponding to the first network device; The second network device; The terminal.

17. The method according to any one of claims 1 to 16, wherein, The terminal has power amplification capability. When the number of the at least one terminal is 1, the first power amplification value is the power amplification value of the terminal for the backscattered signal in the target transmission opportunity.

18. The method according to claim 17, wherein, The number of the at least one terminal is greater than 1, and the first power amplification value is the average value or the minimum value or the maximum value of the power amplification values used by the different multiple terminals.

19. The method according to any one of claims 1 to 18, wherein, The waveform variable is positively correlated with the first data transmission amount, and the first data transmission amount is the data transmission amount per unit resource of the uplink waveform used by the terminal.

20. The method according to any one of claims 1 to 19, wherein, The power adjustment amount is a power adjustment increment or a power adjustment decrement.

21. A method for receiving continuous electromagnetic waves, executed by a terminal, the method includes: Receiving continuous electromagnetic waves sent by a first network device, the continuous electromagnetic waves being sent using a first transmission power, the first transmission power being determined according to at least one of the following, the at least one of the following including at least one of the following: the first reception power, the power loss, the power loss compensation coefficient, the first power amplification value, the waveform variable, the power adjustment amount indicated by the power control command; Sending uplink information to a second network device using backscatter communication technology.

22. A communication device, configured in a first network device, the device includes: A processing module, configured to: determine a first transmission power according to at least one of the following, the at least one of the following including at least one of the following: the first reception power, the power loss, the power loss compensation coefficient, the first power amplification value, the waveform variable, the power adjustment amount indicated by the power control command; A transceiver module, configured to: use the first transmission power to send continuous electromagnetic waves to at least one terminal. ​ 23. A communication device, configured within a terminal, the device comprising: a transceiver module, configured to: receive continuous electromagnetic waves sent by a first network device, and send uplink information using backscatter communication technology, wherein the continuous electromagnetic waves are sent using a first transmission power, and the first transmission power is determined according to at least one of the following, the at least one including at least one of the following: a first received power, a power loss, a power loss compensation coefficient, a first power amplification value, a waveform variable, a power adjustment amount indicated by a power control command.

24. A communication device, comprising a processor and a memory, wherein, the memory is used for storing a computer program; the processor is used for executing the computer program to implement the method according to any one of claims 1-20 or the method according to claim 21.

25. A computer-readable storage medium, in which instructions are stored, and when the instructions are called and executed by a processor, the processor is caused to execute the method according to any one of claims 1-20 or the method according to claim 21.

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