Transmit power control method and apparatus, and communication device

Abstract

The present application relates to the technical field of communications, and discloses a transmit power control method and apparatus, and a communication device. The method comprises: a first device acquires first information, wherein the first device comprises a first communication module and a second communication module, and the second communication module is an ultra-low-power communication module; the first device executes a first operation on the basis of the first information, wherein the first operation comprises at least one of the following: controlling the second communication module to transmit a first signal according to a second target transmit power; controlling the second communication module to apply a first power control bias value to adjust the transmit power for the first signal to the second target transmit power; controlling the first communication module to apply a second power control bias value to adjust the transmit power for a second signal to a first target transmit power; and sending a third power control bias value to a second device, so as to adjust the transmit power of the second device for the second signal to the first target transmit power; wherein the first signal is generated on the basis of backscattering of the second signal by the second communication module.

Description

Transmission power control method, device and communication equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202311683033.6 filed in China on December 8, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a transmission power control method, device and communication equipment. Background Art

[0004] The power control method in the related art is designed based on the assumption of a topology structure in which the user equipment (UE) is directly connected to the base station or the integrated access and backhaul (IAB) node, using multi-carrier signals such as Orthogonal Frequency Division Multiplex (OFDM) or Discrete Fourier Transform–Spread OFDM (DFT-S-OFDM).

[0005] In backscatter communication (BSC), ambient Internet of Things (AIoT) devices may use single-carrier signals such as on-off keying (OOK), amplitude shift keying (ASK), and frequency shift keying (FSK). The connection topology in BSC is not limited to a simple direct connection topology. In addition, some devices have both traditional main communication modules and AIoT-type ultra-low-power communication modules.

[0006] The power control method in the related art cannot be applied to the power control of a communication device that has both a main communication module and an extremely low power consumption communication module. At this time, the lack of power control of a communication device that has both a main communication module and an extremely low power consumption communication module will limit the communication performance of the communication device. Summary of the Invention

[0007] The embodiments of the present application provide a transmission power control method, apparatus, and communication equipment, which can perform power control on a first signal transmitted by a low-power communication module in a communication device having both a main communication module and an extremely low-power communication module, thereby improving the communication performance of the communication device.

[0008] In a first aspect, a transmit power control method is provided, the method comprising:

[0009] A first device acquires first information, the first device including a first communication module and a second communication module, the second communication module being an extremely low power consumption communication module;

[0010] The first device performs a first operation according to the first information;

[0011] The first information includes at least one of the following:

[0012] a second target transmit power of the second communication module;

[0013] a first power control offset value;

[0014] a second power control offset value;

[0015] The first operation includes at least one of the following:

[0016] controlling the second communication module to transmit the first signal according to the second target transmit power;

[0017] Controlling the second communication module to apply the first power control offset value to adjust the transmit power of the first signal to a second target transmit power;

[0018] Controlling the first communication module to apply the second power control offset value to adjust the transmit power of the second signal to the first target transmit power;

[0019] Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power;

[0020] The transmitting end of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module.

[0021] In a second aspect, a transmission power control apparatus is provided, which is applied to a first device, and includes:

[0022] A first acquisition module, configured to acquire first information, wherein the first device includes a first communication module and a second communication module, and the second communication module is an extremely low power consumption communication module;

[0023] A first execution module, configured to execute a first operation according to the first information;

[0024] The first information includes at least one of the following:

[0025] a second target transmit power of the second communication module;

[0026] a first power control offset value;

[0027] a second power control offset value;

[0028] The first operation includes at least one of the following:

[0029] controlling the second communication module to transmit the first signal according to the second target transmit power;

[0030] Controlling the second communication module to apply the first power control offset value to adjust the transmit power of the first signal to a second target transmit power;

[0031] Controlling the first communication module to apply the second power control offset value to adjust the transmit power of the second signal to the first target transmit power;

[0032] Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power;

[0033] The transmitting end of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module.

[0034] In a third aspect, a transmission power control method is provided, the method comprising:

[0035] The fourth device performs a second operation, where the second operation includes at least one of the following:

[0036] Sending first information to the first device;

[0037] sending second information to the first device;

[0038] Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power;

[0039] The first device includes a first communication module and a second communication module, the second communication module is an extremely low power consumption communication module, and the second information includes relevant information for determining the first information;

[0040] The first information includes at least one of the following:

[0041] a second target transmit power of the second communication module, where the second target transmit power is a target transmit power for sending the first signal by the second communication module;

[0042] a first power control offset value, where the first power control offset value is used to adjust the transmit power of the second communication module for the first signal to a second target transmit power;

[0043] a second power control offset value, where the second power control offset value is used to adjust the transmit power of the first communication module for the second signal to a first target transmit power;

[0044] The transmitting end of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module.

[0045] In a fourth aspect, a transmission power control apparatus is provided, which is applied to a fourth device, and includes:

[0046] The second execution module is configured to execute a second operation, where the second operation includes at least one of the following:

[0047] Sending first information to the first device;

[0048] sending second information to the first device;

[0049] Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power;

[0050] The first device includes a first communication module and a second communication module, the second communication module is an extremely low power consumption communication module, and the second information includes relevant information for determining the first information;

[0051] The first information includes at least one of the following:

[0052] a second target transmit power of the second communication module, where the second target transmit power is a target transmit power for sending the first signal by the second communication module;

[0053] a first power control offset value, where the first power control offset value is used to adjust the transmit power of the second communication module for the first signal to a second target transmit power;

[0054] a second power control offset value, where the second power control offset value is used to adjust the transmit power of the first communication module for the second signal to a first target transmit power;

[0055] The transmitting end of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module.

[0056] In a fifth aspect, a communication device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect or the third aspect are implemented.

[0057] In a sixth aspect, a communication device is provided, including a processor and a communication interface;

[0058] Wherein, when the communication device is a first device, the processor is configured to obtain first information and perform a first operation according to the first information;

[0059] The first information includes at least one of the following:

[0060] a second target transmit power of the second communication module;

[0061] a first power control offset value;

[0062] a second power control offset value;

[0063] The first operation includes at least one of the following:

[0064] controlling the second communication module to transmit the first signal according to the second target transmit power;

[0065] Controlling the second communication module to apply the first power control offset value to adjust the transmit power of the first signal to a second target transmit power;

[0066] Controlling the first communication module to apply the second power control offset value to adjust the transmit power of the second signal to the first target transmit power;

[0067] Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power;

[0068] The first device includes a first communication module and a second communication module, the second communication module is an extremely low power communication module, the transmitter of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module;

[0069] or,

[0070] When the communication device is a fourth device, the communication interface is used to perform a second operation, where the second operation includes at least one of the following:

[0071] Sending first information to the first device;

[0072] sending second information to the first device;

[0073] Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power;

[0074] The first device includes a first communication module and a second communication module, the second communication module is an extremely low power consumption communication module, and the second information includes relevant information for determining the first information;

[0075] The first information includes at least one of the following:

[0076] a second target transmit power of the second communication module, where the second target transmit power is a target transmit power for sending the first signal by the second communication module;

[0077] a first power control offset value, where the first power control offset value is used to adjust the transmit power of the second communication module for the first signal to a second target transmit power;

[0078] a second power control offset value, where the second power control offset value is used to adjust the transmit power of the first communication module for the second signal to a first target transmit power;

[0079] The transmitting end of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module.

[0080] In the seventh aspect, a wireless communication system is provided, comprising a first device and a fourth device, wherein the first device is used to execute the steps of the method described in the first aspect, and the fourth device is used to execute the steps of the method described in the third aspect.

[0081] In an eighth 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 or the third aspect are implemented.

[0082] In the ninth 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 programs or instructions to implement the method described in the first aspect or the third aspect.

[0083] In a tenth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium and is executed by at least one processor to implement the steps of the method described in the first aspect or the third aspect.

[0084] In an embodiment of the present application, for a first device that has both a main communication module (i.e., a first communication module) and an extremely low power consumption communication module (i.e., a second communication module), it can use the extremely low power consumption communication module to backscatter the received second signal to generate and send a first signal. In this process, the first device can perform power control on the first signal sent by the extremely low power consumption communication module based on the first information, so that the second target transmission power of the first signal sent by the extremely low power consumption communication module on the first device is more flexible, thereby improving the communication performance of the extremely low power consumption communication module. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] FIG1 is a schematic structural diagram of a wireless communication system to which an embodiment of the present application can be applied;

[0086] FIG2 is a schematic diagram of a backscatter communication system;

[0087] FIG3 is a schematic diagram of signal modulation in a backscatter communication system;

[0088] FIG4 is a schematic diagram of a generation framework of a multi-carrier OOK signal based on an OFDM architecture;

[0089] FIG5 is a schematic diagram of an offset quadrature phase shift keying (O-QPSK) transmission and spreading sequence;

[0090] FIG6 is a schematic diagram of a Differential Binary Phase Shift Keying (DBPSK) modulation and spreading sequence;

[0091] FIG7 is a block diagram of a minimum shift keying (MSK) modulation;

[0092] FIG8 is a schematic diagram of a Gaussian Filtered Minimum Shift Keying (GMSK) signal modulation principle;

[0093] FIG9 a is a schematic diagram of a connection topology 1 of an AIoT device;

[0094] FIG9 b is a schematic diagram of a connection topology 2 of an AIoT device;

[0095] FIG9 c is a schematic diagram of a connection topology 3 of an AIoT device;

[0096] FIG9 d is a second schematic diagram of a connection topology 3 of an AIoT device;

[0097] FIG9e is a schematic diagram of a connection topology 4 of an AIoT device;

[0098] 10 is a schematic diagram of information interaction between a terminal having a main communication module and an extremely low power consumption communication module and a network-side device;

[0099] FIG11 is a flowchart of a transmission power control method according to an embodiment of the present application;

[0100] FIG12 is a second flowchart of a transmission power control method provided in an embodiment of the present application;

[0101] FIG13 is a structural diagram of a transmission power control device according to an embodiment of the present application;

[0102] FIG14 is a second structural diagram of a transmission power control device provided in an embodiment of the present application;

[0103] FIG15 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0104] FIG16 is a schematic structural diagram of a terminal provided in an embodiment of the present application;

[0105] FIG17 is a schematic structural diagram of a network-side device provided in an embodiment of the present application;

[0106] FIG18 is a schematic structural diagram of another network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0107] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0108] The terms "first", "second", etc. in this 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 the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0109] The term "indication" in this application can be either 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, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0110] 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 such as 6G systems and 6G evolution systems, as well as IEEE 802.11 systems (i.e., WiFi systems), Bluetooth systems, Long Range Radio (LoRa), Zigbee systems, wireless optical communication, backscatter communication, low-power Internet of Things systems and other communication systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these techniques can also be applied to systems other than NR systems, such as 6G (6 th Generation, 6G) communication system.

[0111] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. 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. Among them, the vehicle-mounted device can also be called 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 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (Access Point, AP) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment 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.

[0112] The core network device may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (MME), access mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application server discovery function (EASDF), unified data management (UDM), unified data storage (UDR), home user server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BNSF), network access function (UE ... Function, BSF), application function (Application Function, AF), etc. It should be noted that, in the embodiment of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited. It should be noted that, in the embodiment of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0113] To facilitate understanding of the transmit power control method provided in the embodiments of the present application, the following related technologies are first explained:

[0114] 1. Backscatter Communication (BSC)

[0115] Backscatter communication refers to the backscatter communication device using the radio frequency signals from other devices or the environment to modulate the signal to transmit its own information.

[0116] In some embodiments, the backscatter communication device may include at least one of the following:

[0117] Device A refers to the backscatter communication device in traditional Radio Frequency Identification (RFID), which is generally a tag and a passive IoT device.

[0118] Device B is a semi-passive IoT device that has a certain amplification capability for downlink reception or uplink reflection.

[0119] Device C refers to an active device that can send signals to a reader without relying on reflection of the incident signal.

[0120] The energy source of the above backscatter communication device can come from the environment, such as ambient radio frequency (RF) signals, thermal energy, kinetic energy, wind energy, etc., and it can also be called an ambient IoT device.

[0121] In some embodiments, as shown in FIG. 2 , a simple implementation of backscatter communication is as follows: when the tag needs to send a '1', the tag reflects the incident carrier signal; when the tag needs to send a '0', the tag does not reflect.

[0122] In some embodiments, as shown in FIG3 , a backscatter communication device controls the circuit's reflection coefficient Γ by adjusting its internal impedance, thereby changing the amplitude, frequency, phase, etc. of the incident signal to achieve signal modulation. The signal reflection coefficient Γ can be calculated using the following formula: Γ = (Z_1 - Z_0) / (Z_1 + Z_0) = |Γ|e^(jθ_T);

[0123] Where Z_0 is the antenna characteristic impedance, and Z_1 is the load impedance. Assuming the incident signal is S_in(t), the output signal is S_out(t) = S_in(t)|Γ|e^(jθ_T). Therefore, by properly controlling the reflection coefficient, corresponding amplitude modulation, frequency modulation, or phase modulation can be achieved.

[0124] 2. Possible modulation methods for low-power signals

[0125] 1) OOK

[0126] There are two ways to generate OOK modulation: one is a multi-carrier (MC-OOK) signal based on the OFDM architecture, and the other is a single-carrier OOK signal.

[0127] For multi-carrier OOK signals based on the OFDM architecture, the design idea is to not change the transmitting architecture of the existing base station. Therefore, appropriate data is sent on the OFDM subcarriers to make them appear as square wave signals in the time domain. The generation framework is shown in Figure 4.

[0128] For single-carrier OOK signals, a unipolar non-return-to-zero code sequence is used to control the on and off of the incident carrier or continuous wave (CW). Its modulation method is simple and suitable for low-power signals.

[0129] 2) O-QPSK or DBPSK

[0130] Active tags can use offset quadrature phase-shift keying (O-QPSK) or differential binary phase-shift keying (DBPSK) modulation to send data. These two modulation methods belong to constant envelope modulation technology. The two modulation methods are described as follows:

[0131] The O-QPSK modulation process can be described as follows: the serial input binary data stream is split into two different transmission paths, the I path and the Q path. The "I" component is in-phase with the data waveform, and the "Q" component is in quadrature with the data waveform. That is, the even-numbered bits of the original input data are assigned to the I path, and the odd-numbered bits are assigned to the Q path. The in-phase and quadrature paths are staggered by half a symbol period. The I and Q paths are then used to modulate the carrier, using one of four discrete phase variations to represent each transmitted symbol (a bit pair).

[0132] BPSK and QPSK are similar in that both use phase to carry symbol information. For example, when the input symbol is a "1," the baseband modulator outputs a 1 (phase 0 degrees); when the input symbol is a "0," the baseband modulator outputs a -1 (phase 0 degrees). However, BPSK suffers from phase ambiguity, which occurs when the recovered digital information changes from a "0" to a "1" or vice versa, resulting in erroneous recovery. This phenomenon, caused by the phase inversion of the local reference carrier and resulting in erroneous recovery in the receiving system, is called "phase ambiguity." To address this issue, differential encoding was introduced, allowing decoding at the receiving end to be based on phase changes rather than the absolute phase value. This is the result of DBPSK.

[0133] It is worth mentioning that in order to obtain better link performance and anti-interference performance, the original bit information is expanded by using extended sequences and / or coding. Common processing methods include O-QPSK transmission and extended sequences as shown in Figure 5, and DBPSK modulation and extended sequences as shown in Figure 6.

[0134] 3) MSK and GMSK modulation

[0135] Minimum Shift Keying (MSK) is a constant envelope continuous phase modulation, which is developed from binary Frequency Shift Keying (FSK) modulation. In FSK, the carrier frequency changes with the random changes of the modulating signal. The modulating signal is usually "0" or "1", and the phase after modulation is discontinuous. If the phase is continuous, it is called Continuous Phase Frequency Shift Keying (CP-FSK). The so-called MSK modulation method is a special form of CP-FSK with a modulation index of 0.5. The MSK modulation principle can be expressed as the following formula:

[0136] make Among them, θ k The additional phase function is used to ensure the phase continuity between different symbols, ω c t is the carrier angular frequency, T s is the code element width; a k is the phase constant of the kth symbol. The modulation block diagram of MSK is shown in Figure 7.

[0137] Because MSK's phase path is a curve, and its power spectrum sidelobes, as observed on a spectrum analyzer, deviate from the center frequency, attenuating slowly, a Gaussian filter is added before MSK modulation to compensate for its shortcomings and improve attenuation performance. This modulator is therefore called Gaussian Minimum Shift Keying (GMSK). As shown in the GMSK signal modulation principle diagram in Figure 8, GMSK modulation involves adding a Gaussian low-pass filter before the MSK modulator, resulting in a smoother signal and significantly improved power spectrum sidelobe attenuation. After MSK modulation, the resulting symbol data, namely the I and Q paths, is expressed as follows:

[0138] Where A represents the signal envelope, ω c represents the carrier angular frequency, Represents the information phase.

[0139] 3. Classification and Characteristics of AIoT Devices in the 3rd Generation Partnership Project (3GPP)

[0140] In the 3GPP R19 AIoT research, ambient IoT devices are characterized based on their energy storage capacity and their ability to generate radio frequency signals for transmission. The AIoT device has one of the following energy storage capabilities:

[0141] Storage capacity 1: No ability to store energy;

[0142] Storage capacity 2: Energy can be stored up to E1 or E2 joules, where it is possible for E1 = E2;

[0143] Storage capacity3: Energy can be stored up to E2 joules.

[0144] Depending on these storage capacities, the study considered the following set of ambient IoT devices:

[0145] Device A: No energy storage, no independent signal generation / amplification, i.e. backscatter transmission;

[0146] Device B: has energy storage but no independent signal generation, i.e. backscatter transmission. Utilization of stored energy may include amplification of the reflected signal.

[0147] Device C: has energy storage and independent signal generation, i.e., active RF components for transmission.

[0148] 4. Connection topology and deployment scenarios of AIoT devices

[0149] 1) As shown in Figure 9a, in the connection topology 1 of the AIoT device, the AIoT device and the base station (BS) establish a bidirectional direct connection.

[0150] 2) As shown in Figure 9b, in the AIoT device connection topology 2, the AIoT device establishes a bidirectional connection with an intermediate node. The intermediate node can be a relay node, IAB node, user equipment (UE), repeater, etc. The intermediate node transmits the data and / or signaling of the AIoT device to the base station, and vice versa.

[0151] 3) As shown in Figures 9c and 9d, in AIoT device connection topology 3, the AIoT device sends data / signaling to the base station and receives data / signaling from an auxiliary node; or the AIoT device receives data / signaling from the base station and sends data / signaling to an auxiliary node. The auxiliary node can be a relay, IAB node, UE, repeater, etc.

[0152] 4) As shown in Figure 9e, in the connection topology 4 of the AIoT device, the AIoT device and the UE establish a bidirectional direct connection.

[0153] It should be noted that the ultra-low power communication module in the embodiments of this application is similar to the above-mentioned AIoT device, except that the communication device equipped with the ultra-low power communication module also has a main communication module. For ease of explanation, the AIoT device mentioned in the following embodiments of this application refers to the ultra-low power communication module.

[0154] 5. NR Power Control

[0155] The NR protocol defines power control for uplink channels or signals, such as the Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), Sounding Reference Signal (SRS), and Physical Random Access Channel (PRACH).

[0156] 1) Power control of PUSCH:

[0157] If a UE transmits a PUSCH on the active uplink (UL) bandwidth part (BWP) b of carrier f in serving cell c using parameter set configuration indexed j and PUSCH power control process indexed l, the UE shall set the PUSCH transmission power P at PUSCH transmission opportunity i to PUSCH,b,f,c (i,j,q d ,l) is determined as:

[0158] Among them, the parameter j is used to represent the parameter configuration index of the open-loop power control (for example, j = 0 represents PUSCH in RACH, j = 1 represents PUSCH related to the configured grant, and j> = 2 represents PUSCH with dynamic grant), the parameter l is used to represent the process index of the closed-loop power control, and qd Indicates the reference signal index. CMAX,f,c (i) is the maximum transmit power of the UE at time i, which is defined for the carrier and cell; P O_PUSCH,b,f,c (j) is the target received power (on a resource block (RB) with a 15kHz subcarrier spacing (SCS)) of the open-loop control configuration index j, which is defined for BWP, carrier, and cell; PL b,f,c (q d ) is the reference signal q used by the UE d The estimated downlink path loss is defined for BWP, carrier, and cell; α b,f,c (j) is the partial path loss compensation factor defined by the open-loop control configuration index j, which is defined for BWP, carrier, and cell; Δ TF,b,f,c (i) defines the transmit power required by the UE for each RE at time i. It is defined for BWP, carrier, and cell. It is only used for single-layer transmission and is 0 for multi-layer transmission. is the number of RBs for PUSCH at time i. Combined with SCS, it determines the total bandwidth of PUSCH, which is defined for BWP, carrier, and cell. b,f,c (i, l) is the offset value introduced by the closed-loop power control process l at time i, which is the sum of the power adjustment values ​​indicated by the transmit power control (TPC) commands at the past time, that is, Wherein, δPUSCH,b,f,c(m,l) is the power adjustment value indicated by the mth TPC command of the lth closed-loop power control process, which is defined for BWP, carrier and cell.

[0159] 2) Power control of PUCCH:

[0160] If a UE uses the PUCCH power control process with index 1 to transmit a PUCCH on the active UL BWP b of carrier f in primary cell c, the UE sets the PUCCH transmit power P in PUCCH transmission opportunity i to PUCCH,b,f,c (i,q u ,q d ,l) is determined as:

[0161] Among them, q u It is the index of PUCCH (UE may need to transmit multiple PUCCHs at the same time).

[0162] It is worth noting that the above-mentioned PUCCH power control and PUSCH power control include the following differences:

[0163] i) No partial path loss compensation factor;

[0164] ii)P O_PUCCH,b,f,c (q u ) is the qth u The target received power of each PUCCH is defined for BWP, carrier and cell;

[0165] iii)Δ F_PUCCH (F) represents the power control bias that needs to be introduced for different PUCCH formats (F). For example, if the power control bias of different PUCCH formats is introduced, Δ F_PUCCH (F0) corresponds to PUCCH format 0, Δ F_PUCCH (F1) corresponds to PUCCH format 1, Δ F_PUCCH (F2) corresponds to PUCCH format 2, Δ F_PUCCH (F3) corresponds to PUCCH format 3, Δ F_PUCCH (F4) corresponds to PUCCH format 4; otherwise, Δ F_PUCCH (F)=0.

[0166] iv)g b,f,c (i, l) is the offset value introduced by the closed-loop power control process l at time i, and is the sum of the power adjustment values ​​indicated by the TPC commands at past time points.

[0167] 3) Power control of SRS:

[0168] If the UE uses the SRS power control process with index 1 to transmit SRS based on the configuration of the SRS resource set on the active UL BWP b of the carrier f of the serving cell c, the UE sets the SRS transmission power P in the SRS transmission opportunity i to SRS,b,f,c (i,q s ,l) is determined as:

[0169] Among them, PL b,f,c (q d ) represents the reference signal q d Estimated downlink path loss.

[0170] It is worth noting that the power control of the SRS and the power control of the PUSCH have the following differences:

[0171] i)P O_SRS,b,f,c (q s ) is the qth s The SRS target received power of each SRS resource set is defined for BWP, carrier and cell;

[0172] ii)MSRS,b,f,c (i) is the number of RBs of SRS at time i. Combined with SCS, it determines the total bandwidth of SRS, which is defined for BWP, carrier and cell;

[0173] iii)α SRS,b,f,c (q s ) is the SRS resource set q s The partial path loss compensation factor is defined for BWP, carrier and cell;

[0174] iv)h b,f,c (i, l) is the offset value introduced by closed-loop power control process l at time i, which can be the same as the PUSCH power control offset value, or (when there is no PUSCH transmission) the sum of the power adjustment values ​​indicated by the TPC commands at past time points.

[0175] 4) Power control of PRACH:

[0176] The UE determines the transmission power P of the physical random access channel (PRACH) on the active UL BWP b of carrier f of cell c based on the downlink (DL) reference signal (RS) of cell c in transmission opportunity i. PRACH,b,f,c (i) Defined as: P PRACH,b,f,c (i) = min{P CMAX,f,c (i),P PRACH,target,f,c +PL b,f,c};

[0177] It is worth noting that the power control of the PRACH described above differs from the power control of the PUSCH in the following ways:

[0178] i)P PRACH,target,f,c It is the target received power of PRACH, given by the parameter: PREAMBLE_RECEIVED_TARGET_POWER, which is defined for BWP, carrier and cell;

[0179] ii)PL b,f,c It is the downlink path loss estimated by the UE using the uniquely associated reference signal (referenceSignalPower–higher layer filtered RSRP in dBm), which is defined for BWP, carrier, and cell.

[0180] From the above, it can be seen that the transmit power control method defined by NR is designed based on the assumption of multi-carrier signals such as OFDM / DFT-S-OFDM and UE-gNB / IAB direct connection topology, while the extremely low power communication module may use single-carrier signals such as OOK / ASK / FSK, and the connection topology is not limited to the simple topology of direct connection. For example, it may be a separate architecture of topology 3, and the main communication module located on the first device with the extremely low power communication module may also provide an excitation source signal for the extremely low power communication module. Therefore, the transmit power control method in the related art is not applicable to the power control of a communication device that has both a main communication module and an extremely low power communication module.

[0181] For example, the power control of PUSCH, PUCCH, and SRS all need to consider the signal format, that is, the bandwidth occupied by the signal (number of RBs and SCS), and the number of bits that each resource element (RE) needs to carry (bits per RE), and the occupied bandwidth is calculated based on the assumption of OFDM signals. The ultra-low power communication module may need to use new signals. Possible signal types include: OOK, ASK, FSK, GMSK, O-QPSK, DBPSK, etc., and these signals are all single-carrier modulated signals. The actual occupied bandwidth of different signals and the number of bits required for each symbol will affect the calculation of the transmission power. The power calculation formula of NR in the related art is calculated based on an OFDM signal with a certain subcarrier spacing (such as 15kHz), which cannot be directly used for the power calculation of a single-carrier signal. Therefore, the related art lacks a transmission power control method for communication equipment that has both a main communication module and an ultra-low power communication module.

[0182] Among them, single-carrier modulation is defined as a modulation technology that uses only one carrier within a fixed frequency band. For single-carrier modulation, one symbol can carry up to two orthogonal signals (divided into I and Q). When the symbol rate and transmission pulse are fixed, the bandwidth occupied by the single-carrier signal is also fixed. For example, assuming a double-sideband ASK signal, if the transmission pulse is an ideal time-domain sinc signal, then the bandwidth occupied by the signal is 1 / T s , where T s It is the time width of one pulse and also the time length of one modulation symbol.

[0183] 6. Non-IoT devices integrating extremely low-power communication modules

[0184] Ultra-low-power communication modules are typically used solely on terminals with high requirements for power consumption, complexity, and battery life, such as IoT terminals. An expanded application scenario involves applying the ultra-low-power communication module to non-IoT devices, such as mobile phones, including both terminals and network-side devices. This allows the device to have both a main communication module and an ultra-low-power communication module. The main communication module offers higher speed and spectral efficiency, but also consumes more power. If left on for extended periods, this reduces the device's battery life and makes it suitable for transmitting large amounts of data in a short period of time. The ultra-low-power communication module, on the other hand, may offer lower speed and spectral efficiency, but consumes very little power. It is suitable for transmitting small amounts of data over long periods of time or for monitoring control plane signaling to avoid or reduce the additional latency caused by discontinuous reception (DRX). Figure 10 illustrates information exchange between a terminal equipped with both the main communication module and the ultra-low-power communication module and a network-side device. The two devices exchange first and second information via the ultra-low-power communication module, and then interact with the main communication module within the device, such as waking up the main communication module for further operations.

[0185] In an embodiment of the present application, based on the transmission signal and topological structure characteristics of a non-Internet of Things device that integrates an extremely low power consumption communication module, a method for controlling the transmission power of the extremely low power consumption communication module and a configuration method for power control of the extremely low power consumption communication module and the main communication module are provided.

[0186] For the sake of convenience, the following terms in the embodiments of this application are first explained:

[0187] 1) The first communication module, namely the main communication module, is also referred to as the MR. The main communication module generally refers to a module that supports traditional communication modes (such as 4G, 5G, etc.), for example, a module that supports OFDM communication (including uplink and / or downlink).

[0188] 2) The second communication module, the ultra-low power communication module, also known as the LR, supports backscatter signal transmission (such as Device A or Device B in AIoT).

[0189] Optionally, the ultra-low power communication module can also support energy harvesting (collecting energy from light, solar energy, wireless signals, etc.).

[0190] It should be noted that for backscatter signal transmission, the excitation source signal can be generated by the terminal with the extremely low power consumption communication module itself or by another device. For example, the excitation source signal is generated by the main communication module on the first device, or the excitation source signal is generated by another device (such as a third device).

[0191] It is worth mentioning that the power consumption of the ultra-low power communication module is significantly lower than that of the main communication module. For example, the power consumption of the ultra-low power communication module is generally tens to hundreds of microwatts, while the power consumption of the main communication module is generally tens to thousands of milliwatts. The cost of the ultra-low power communication module is also significantly lower than that of the main communication module.

[0192] The following describes in detail the transmit power control method, transmit power control apparatus, and related equipment provided by the embodiments of the present application through some embodiments and their application scenarios in combination with the accompanying drawings.

[0193] Referring to FIG11 , an embodiment of the present application provides a method for controlling transmission power, the execution subject of which is a first device. As shown in FIG11 , the method for controlling transmission power includes the following steps:

[0194] Step 111: A first device obtains first information. The first device includes a first communication module and a second communication module. The second communication module is an extremely low power consumption communication module.

[0195] Step 112: The first device performs a first operation according to the first information.

[0196] The first information includes at least one of the following:

[0197] a second target transmit power of the second communication module;

[0198] a first power control offset value;

[0199] a second power control offset value;

[0200] The first operation includes at least one of the following:

[0201] controlling the second communication module to transmit the first signal according to the second target transmit power;

[0202] Controlling the second communication module to apply the first power control offset value to adjust the transmit power of the first signal to a second target transmit power;

[0203] Controlling the first communication module to apply the second power control offset value to adjust the transmit power of the second signal to the first target transmit power;

[0204] Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power;

[0205] The transmitting end of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module.

[0206] It should be noted that the first device in the embodiment of the present application is a communication device having a main communication module (ie, the first communication module) and an extremely low power consumption communication module (ie, the second communication module), and the second communication module sends the first signal in a backscattering manner.

[0207] Optionally, the first device may be a network side device or a terminal device. For ease of explanation, the embodiments of the present application are generally described by taking the example where the first device is a terminal.

[0208] In some embodiments, the excitation source (ie, the second signal) obtained when the second communication module performs backscattering may come from the second device or the first communication module.

[0209] In one embodiment, the second device sends a second signal, which serves as an excitation source for the second communication module to perform backscattering, so that the second communication module generates and sends the first signal.

[0210] In another embodiment, the first communication module sends a second signal, which serves as an excitation source for backscattering by the second communication module, so that the second communication module generates and sends the first signal. In other words, in this embodiment, the uplink of the MR provides the uplink RF carrier of the LR.

[0211] In another embodiment, the second device transmits a second signal, the first communication module receives the second signal, and provides an excitation source to the second communication module based on the received second signal, so that the second communication module generates and transmits the first signal based on backscatter. In other words, in this embodiment, the MR's downlink provides the LR's uplink RF carrier.

[0212] In the embodiment of the present application, the receiving end of the first signal is named as the third device. The third device can be located in the same physical entity as the second device or in a different physical entity. For ease of explanation, in the embodiment of the present application, the second device is generally used to send the second signal, the second signal is backscattered by the first device to generate and transmit the first signal, and the first signal is received by the third device. For the purpose of illustration, the second device is the sending node of the second signal, that is, the sending node of the radio frequency signal, the first device is the backscattering node, and the third device is the receiving node of the first signal, that is, the receiving node of the radio frequency signal.

[0213] In some embodiments, the third device may be the base station in Figure 9a, the relay node in Figure 9b, the amplitude node in Figure 9c, the base station in Figure 9d, and the UE in Figure 9e. The fourth device may be the base station in Figure 9a, the relay node in Figure 9b, the base station in Figure 9c, the auxiliary node in Figure 9d, and the UE in Figure 9e.

[0214] It is worth noting that in some implementations, the LR's transmit power for the first signal can be adjusted based on power attenuation or power processing. Furthermore, the LR's transmit power for the first signal is also affected by the transmit power of the excitation source signal (i.e., the second signal). For example, if the LR does not support power adjustment, the greater the transmit power of the second signal, the greater the transmit power of the first signal generated by the LR based on backscattering.

[0215] In summary, the power adjustment of the first signal sent by the LR can be achieved by at least one of the following methods:

[0216] 1) Directly adjust the LR's transmit power for the first signal;

[0217] 2) adjusting the transmission power of the second device for the second signal;

[0218] 3) Adjust the transmission power of the second signal sent or forwarded by the MR.

[0219] It should be noted that the ultimate purpose of the above adjustment is to enable the LR to send the first signal according to the second target transmit power.

[0220] For example, if the first operation includes: controlling the first communication module to apply the second power control offset value to adjust the transmit power of the second signal to the first target transmit power, or sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power. In this case, the transmit power of the second signal is adjusted to the first target transmit power, and the subcarrier power of the second signal reaching the LR changes accordingly. Under the influence of the subcarrier power of the second signal, the LR can generate a first signal transmitted at the second target transmit power based on backscattering.

[0221] In an embodiment of the present application, for a first device that has both a main communication module (i.e., a first communication module) and an extremely low power consumption communication module (i.e., a second communication module), it can use the extremely low power consumption communication module to backscatter the received second signal to generate and send a first signal. In this process, the first device can perform power control on the first signal sent by the extremely low power consumption communication module based on the first information, so that the second target transmission power of the first signal sent by the extremely low power consumption communication module on the first device is more flexible, thereby improving the communication performance of the extremely low power consumption communication module.

[0222] As an optional implementation manner, the first device obtaining the first information includes:

[0223] The first device obtains second information, and determines the first information based on the second information;

[0224] The second information includes at least one of the following:

[0225] a third target transmit power and a first adjustment amount of the first communication module, wherein the second target transmit power is determined based on the third target transmit power and the first adjustment amount;

[0226] a first parameter and a second adjustment amount of the first communication module, wherein the second parameter is determined based on the first parameter and the second adjustment amount;

[0227] The second parameter;

[0228] The first parameters include parameters used to determine the third target transmit power; the second parameters include parameters used to determine the second target transmit power.

[0229] In some embodiments, the second information may directly indicate the third target transmission signal and the second target transmission signal, or may indicate relevant information used to determine the third target transmission signal and the second target transmission signal.

[0230] In some implementations, the manner in which the first device obtains the second information may include at least one of the following:

[0231] receiving at least part of the second information configured by the network side (the fourth device);

[0232] Acquiring at least part of the second information stored or calculated locally, for example: the terminal obtains a first adjustment value configured on the network side, and the third target transmit power of the first communication module is locally known;

[0233] At least part of the second information agreed upon in the protocol is obtained.

[0234] In some embodiments, the first target transmit power is equal to or unequal to the third target transmit power, and the difference between the two includes: the first target transmit power is calculated for the purpose of LR sending the first signal according to the second target transmit power; the third target transmit power can be configured or indicated by the network side.

[0235] Among them, when the first target transmission power is not equal to the third target transmission power, and MR provides the excitation source for LR to perform backscattering, if it is necessary to control LR to send the first signal according to the second target transmission power, MR preferentially sends the second signal according to the first target transmission power.

[0236] In this embodiment, the second information can be used to configure the transmit power of the two communication modules, LR and MR. Thereafter, LR can transmit the first signal according to the second target transmit power, and MR can transmit the second signal or other signal different from the second signal according to the third target transmit power.

[0237] In some implementations, the second signal may be an OFDM signal, and the first signal may be a single carrier signal.

[0238] Of course, in addition to OFDM signals and single-carrier signals, the above-mentioned first signal and second signal can also be a combination of other types of signals, which does not constitute a specific limitation here. For the sake of convenience of explanation, in the embodiments of the present application, the second signal can be an OFDM signal and the first signal can be a single-carrier signal. For example, it is generally illustrated.

[0239] In some implementations, when the second signal is an OFDM signal, the first parameter includes a parameter in a power control calculation formula for an OFDM signal in the related art, which is not specifically limited herein.

[0240] In some embodiments, the second parameter includes at least one or a combination of at least two of the following parameters corresponding to the second communication module:

[0241] target received power, first path loss, second path loss, maximum transmit power, type of the first signal, time length of a symbol in the first signal, frequency domain width of a symbol in the first signal, offset value of closed-loop power control, number of RBs in the occupied bandwidth of the first signal, number of subcarriers contained in each RB of the first signal, average number of bits carried by each symbol in the first signal, partial path loss compensation factor;

[0242] The first path loss is the power loss of the transmission path of the first signal and the second signal obtained based on the reference signal measurement; the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

[0243] To facilitate understanding of how the second information implements the indication or configuration of the second target transmit power and the third target transmit power, the following possible implementations are described by way of example:

[0244] Implementation method 1: the second information includes the third target transmit power and the first adjustment amount of the first communication module.

[0245] In this embodiment, the difference between the third target transmit power of the first communication module and the second target transmit power of the second communication module and the corresponding third target transmit power can be used as the first adjustment amount. In this way, by indicating the first adjustment amount, the corresponding second target transmit power can be determined with the third target transmit power as a reference.

[0246] For example: the network indicates or agrees on a power adjustment amount Δ MR->LR The second target transmit power of a target transmit channel (PUSCH, PRACH, SRS, PUCCH, etc.) of LR is the third target transmit power and adjustment amount Δ of the corresponding channel of the main communication module MR->LR sum.

[0247] Specifically, P LR,PUSCH,b′,f′,c′ (i′,j′,q′ d ,l′)=P MR,PUSCH,b,f,c (i,j,q d ,l)+Δ MR->LR ; P LR,PUCCH,b′,f′,c′ (i′,q u ′,q′ d ,l′)=P MR,PUCCH,b,f,c (i,q u ,q d ,l)+Δ MR->LR ; P LR,SRS,b′,f′,c′ (i′,q′ s ,l′)=P MR,SRS,b,f,c (i,q s ,l)+Δ MR->LR ;

[0248] P LR,PRACH,b′,f′,c′ (i′)=P MR,PRACH,b,f,c (i)+Δ MR->LR ;

[0249] Among them, parameter i is the symbol / time index; parameter j is the parameter configuration index of open-loop power control (for example, j=0 indicates PUSCH in RACH, j=1 indicates PUSCH related to configured grant, and j>=2 indicates PUSCH with dynamic grant); parameter l is the process index of closed-loop power control; q d is the reference signal index; q u is the index of PUCCH; q s is the SRS resource set index; c is the serving cell index; f is the carrier index; and b is the bandwidth part (BWP) index.

[0250] The meaning of the above b',c',f',i',j',q',l' is similar to that of the above b,c,f,i,j,q,l, except that b',c',f',i',j',q',l' is used for LR and b,c,f,i,j,q,l is used for MR.

[0251] In some embodiments, b, c, f, i, j, q, l of MR may be the same as b', c', f', i', j', q', l' of LR.

[0252] In some other embodiments, at least one of b,c,f,i,j,q,l of MR and b',c',f',i',j',q',l' of LR may be different. In this case, the first device may obtain the association relationship between b,c,f,i,j,q,l of MR and b',c',f',i',j',q',l' of LR based on network-side indication or protocol agreement, thereby determining the second target transmit power of the associated b',c',f',i',j',q',l' based on the third target transmit power of b,c,f,i,j,q,l as a reference, or determine the third target transmit power of the associated b,c,f,i,j,q,l based on the second target transmit power of b',c',f',i',j',q',l' as a reference.

[0253] In one embodiment, P LR,PUSCH,b′,f′,c′ (i′,j′,q′ d ,l′) indicates that when the LR uses the parameter set configuration with index j′ and the PUSCH power control process with index l′ to send PUSCH on the active uplink (UL) bandwidth part (BWP) b′ of carrier f′ of serving cell c′, the LR will set the second target transmit power of the PUSCH at PUSCH transmission opportunity i′;

[0254] P MR,PUSCH,b,f,c (i,j,q d ,l) indicates that when the MR uses the parameter set configuration with index j and the PUSCH power control process with index l to transmit PUSCH on the active uplink (UL) bandwidth part (BWP) b of carrier f in serving cell c, the LR will use the second target transmit power of the PUSCH at PUSCH transmission opportunity i;

[0255] Corresponding to PUSCH, the above P LR,PUCCH,b′,f′,c′ (i′,q′ u ,q′ d ,l′) represents the second target transmit power of PUCCH transmitted by LR, P MR,PUCCH,b,f,c (i,qu ,q d ,l) represents the third target transmit power of the PUCCH transmitted by the MR; the above P LR,SRS,b′,f′,c′ (i′,q′ s ,l′) represents the second target transmission power of SRS transmitted by LR, P MR,SRS,b,f,c (i,q s ,l) represents the third target transmission power of the SRS transmitted by the MR; the above P LR,PRACH,b′,f′,c′ (i′) represents the second target transmit power of the PRACH transmitted by the LR, P MR,PRACH,b,f,c (i) represents the third target transmit power of the PRACH transmitted by the MR, which will not be described in detail here.

[0256] Implementation method 2: the second information includes the second target transmit power and the third adjustment amount of the second communication module.

[0257] The differences between this embodiment and the above-mentioned embodiment 1 include: in this embodiment 2, the second target transmit power is used as a reference, and the second target transmit power is adjusted based on the third adjustment amount to obtain the corresponding third target transmit power.

[0258] In the above-mentioned embodiments 1 and 2, the method of using one of the first communication module and the second communication module as a reference module to perform power control on the other module is more suitable for performing incremental power control when one module is working and another module is activated, thereby avoiding requiring the first device to re-acquire all power control parameters and re-estimate the path loss, thereby saving signaling overhead and delay in the power control process.

[0259] Implementation method three: the second information includes the first parameter and the second adjustment value of the first communication module.

[0260] In this embodiment, the first parameter may be adjusted based on the second adjustment amount to obtain the second parameter. Thereafter, the first device may calculate the third target transmit power based on the first parameter and the second target transmit power based on the second parameter.

[0261] In some implementations, the manner of calculating the second target transmit power according to the second parameter includes the following two methods:

[0262] Method 1: Convert relevant parameters of the first signal into parameters of an OFDM signal, and substitute the converted parameters into an uplink power calculation formula in related technologies to calculate the second target transmit power of the first signal.

[0263] For example: If the first signal is a single-carrier signal, the parameters of the first signal can be converted into parameters of an equivalent OFDM signal, and the parameters of the equivalent OFDM signal can be substituted into the power control calculation formula of NR in the relevant technology to obtain the second target transmission power of the single-carrier signal.

[0264] As an optional implementation manner, the second parameter represents a parameter of an OFDM signal equivalent to the first signal. In this case, the second target transmit power can be determined based on the following formula according to the second parameter:

[0265] Wherein, P' represents the second target transmission power; P' CMAX represents the maximum transmission power of the second communication module; P' O Indicates the target received power of the equivalent OFDM signal on one RB; represents the number of RBs in the bandwidth B occupied by the first signal; PL' represents the path loss of the first signal; Δ' TF represents the transmission power required by the second communication module in each resource element RE; f' represents the bias value for closed-loop power control of the first signal.

[0266] In some embodiments, Δ' TF Determined based on the following formula:

[0267] in, γ' represents the average number of bits carried by each symbol of the first signal; γ'' represents the average number of bits carried by each RE of the first signal; It represents the number of OFDM subcarriers contained in one RB of the first signal; β'0 and β'1 are offset values.

[0268] It should be noted that γ' obtains the average number of bits on each single carrier symbol, while Δ TF It is defined according to the average number of bits carried by one RE, so it is also necessary to divide γ' by An average number of bits carried by each RE of the first signal is obtained.

[0269] Optionally, the above-mentioned second target transmit power may specifically refer to the second target transmit power of the first signal calculated based on the reference signal q' and the l'th closed-loop power control process at the i'th symbol / transmission time and the j'th open-loop control configuration. For simplicity, the above-mentioned i', j', q', and l' parameters are omitted in the calculation formula of the target transmit power in the embodiment of the present application.

[0270] For example, the second target transmit power of the first signal at the i'th symbol / transmission time, the j'th open-loop control configuration, based on the reference signal q', and the l'th closed-loop power control process can be calculated based on the following formula:

[0271] Among them, P' O (j′) is defined the same as NR in the related art, and is the second target received power of the equivalent OFDM signal assumed on one RB of 15 kHz SCS.

[0272] The above-mentioned β'0 and β'1 are two bias values ​​related to the transmission channel (data / signaling), modulation mode, etc., which can be constants or functions of j' and l', where l' is the power control process index; j' is the open-loop control configuration index; β'0 and β'1 are optional parameters. In the embodiment of the present application, the optionality of a parameter means that the power adjustment does not change with the parameter (for example: when β'0 and β'1 are 1, it is equivalent to not taking effect).

[0273] f'(i',l') is the bias value introduced by closed-loop power control process l' at time i'. It can be an absolute value indicated by signaling or a differential value indicated by the network. The UE calculates the absolute value by cumulative summation. Optionally, if closed-loop power control has not yet taken effect, such as when TPC signaling has not been received or before a connection is established, f'(i',l') and f(i,l) may not exist. In this case, only open-loop power control is in effect.

[0274] Optionally, the target transmit power may also be defined for BWP b', carrier f' and cell c'. For simplicity, the calculation formula for the target transmit power in the embodiment of the present application omits the b', f', c' parameters.

[0275] In this embodiment, by converting the parameters of the first signal into parameters of an equivalent OFDM signal, the second target transmit power of the second communication module for the first signal can be calculated based on the power control calculation formula for NR in the related art.

[0276] Method 2: Design an uplink power calculation formula for the first signal, and substitute the second parameter corresponding to the first signal into the formula to calculate the second target transmit power of the first signal.

[0277] As an optional implementation, the first signal is a single-carrier signal, and the second parameter is represented by a parameter in a power control calculation formula defined for the first signal. In this case, the second parameter can be substituted into the following formula to obtain the second target transmit power: P'=min{P' CMAX ,P' O,S +PL'+Δ'TF,S +f'};

[0278] Among them, P' O,S Indicates the target received power on a single carrier symbol; Δ' TF,S Indicates the transmission power required by the second communication module in each single carrier symbol.

[0279] In some implementations, since the single carrier signal that may be modulated at each moment is different, P' O,S The average power of the first signal can be taken, or the power sum accumulated over a fixed bandwidth can be taken from the power spectral density of the first signal as P' O,S .

[0280] For example, assuming the first signal is an OOK / ASK signal, if there are two modulation symbols, 0 and 1, which appear with equal probability, then the average power is 0.5.

[0281] Another example: based on the calculated / measured power spectral density (PSD) of a random signal, the power can be accumulated in a certain area within a certain bandwidth according to certain criteria, and the total power can be used as P O,S , for example, only the area within the first main lobe is selected for power accumulation.

[0282] In some embodiments, Δ' TF,S Determined based on the following formula:

[0283] in, T' s represents the time length of a single carrier symbol in the first signal; B' represents the frequency domain width of a single carrier symbol in the first signal; β'2 and β'3 are two offset values.

[0284] Optionally, the above-mentioned second target transmit power may specifically refer to the second target transmit power of the first signal calculated based on the reference signal q' and the l'th closed-loop power control process at the i'th symbol / transmission time and the j'th open-loop control configuration. For simplicity, the above-mentioned i', j', q', and l' parameters are omitted in the calculation formula of the target transmit power in the embodiment of the present application.

[0285] For example, the second target transmit power of the first signal at the i'th symbol / transmission time, the j'th open-loop control configuration, based on the reference signal q', and the l'th closed-loop power control process can be calculated based on the following formula: P'(i',j',q',l')=min{P' CMAX (i'),P' O,S(i')+PL'(q')+Δ' TF,S +f'(i',l')}

[0286] Among them, P' O,S (i') is defined as the second target received power on a single carrier symbol. It is independent of the bandwidth but is related to the modulation scheme. For example, it can be defined as the average power under a certain modulation scheme, the 3dB bandwidth power of the average power spectral density, etc.

[0287] In general, T s B=1, but in high spectrum efficiency communication, T s B<1;

[0288] β'2 and β'3 are two bias values ​​related to the transmission channel (data / signaling) and modulation mode of the first signal. They can be constants or functions of j' and l', defined by the network or protocol. β'2 and β'3 are optional parameters. In the embodiment of the present application, the optionality of a parameter means that power adjustment does not change with the parameter (for example, when β'2 and β'3 are 1, power adjustment is disabled).

[0289] In this embodiment, when the first signal is a single-carrier signal, a calculation formula for the uplink transmit power of a single-carrier signal is defined based on the characteristics of the single-carrier signal. Thus, the second parameter of the single-carrier signal can be directly substituted into the above formula to calculate the second target transmit power of the second communication module for the single-carrier signal.

[0290] Implementation method 4: the second information includes the second parameter and the fourth adjustment value of the second communication module.

[0291] The differences between this embodiment and the third embodiment include: in the fourth embodiment, the second parameter is used as a reference and the second parameter is adjusted based on the fourth adjustment amount to obtain the first parameter.

[0292] The above-described third and fourth embodiments enable joint power control of the first and second communication modules, thereby configuring the power control parameters of the two communication modules through a single power parameter configuration process. For example, if both communication modules need to be turned on simultaneously when the first device is turned on, the power control parameters of the two communication modules can be obtained based on the above-described third and fourth embodiments.

[0293] Implementation method five: the second information may directly indicate the first parameter and the second parameter.

[0294] In this implementation, the first device may directly obtain the first parameter and the second parameter, and respectively calculate the third target transmit power and the second target transmit power based on the first parameter and the second parameter.

[0295] In some embodiments, the method further comprises:

[0296] The first device obtains first association information;

[0297] In a case where the first information includes the third target transmit power and the first adjustment amount, the first association information is used to indicate an association relationship between the third target transmit power, the first adjustment amount, and the second target transmit power;

[0298] In a case where the first information includes the first parameter and the second adjustment amount, the first association information is used to indicate an association relationship between the first parameter, the second adjustment amount, and the second parameter;

[0299] In a case where the first information includes the second target transmit power and the third adjustment amount, the first association information is used to indicate an association relationship between the second target transmit power, the third adjustment amount, and the third target transmit power;

[0300] In a case where the first information includes the second parameter and the fourth adjustment value, the first association information is used to indicate an association relationship among the second parameter, the fourth adjustment value, and the third target transmit power.

[0301] In some embodiments, the first associated information may be b, f, c, i, j, q, l of the second signal and b′, ​​f′, c′, i′, j′, q′, l′ of the first signal.

[0302] Optionally, if b,f,c,i,j,q,l and the associated b′,f′,c′,i',j',q',l' have the same value, it means that the two are associated with each other.

[0303] Alternatively, the association relationship between b,f,c,i,j,q,l and b′,f′,c′,i',j',q',l' can be indicated through network-side indication or protocol agreement.

[0304] For the above-mentioned embodiment 1, the first association information is used to indicate the association relationship between the third target transmit power, the first adjustment amount and the second target transmit power. In this way, the third target transmit power can be adjusted using the first adjustment amount to obtain the second target transmit power associated with the first adjustment amount and the third target transmit power.

[0305] For the above-mentioned embodiment 2, the first association information is used to indicate the association relationship between the first parameter, the second adjustment amount and the second parameter, so that the first parameter can be adjusted using the second adjustment amount to obtain the second parameter associated with the second adjustment amount and the first parameter.

[0306] For the above-mentioned embodiment three, the first association information is used to indicate the association relationship between the second target transmit power, the third adjustment amount and the third target transmit power. In this way, the second target transmit power can be adjusted using the third adjustment amount to obtain the third target transmit power associated with the third adjustment amount and the second target transmit power.

[0307] For the above-mentioned fourth embodiment, the first association information is used to indicate the association relationship between the second parameter, the fourth adjustment amount and the third target transmit power. In this way, the second parameter can be adjusted using the fourth adjustment amount to obtain the first parameter associated with the fourth adjustment amount and the second parameter.

[0308] In some embodiments, the second adjustment amount includes at least one of the following:

[0309] Adjustment amount of target received power: ΔP MR->LR,O,b′,f′,c′ ;

[0310] Adjustment of partial path loss compensation factor: ΔαMR->LR,b′,f′,c′;

[0311] Path loss adjustment: ΔPL MR->LR,b′,f′,c′ ;

[0312] Adjustment of the power control bias value: ΔfMR->LR,b′,f′,c′;

[0313] Other adjustments: For example, when the LR supports only uplink (UL only), the LR's power control can refer to the MR's downlink reference signal received power (RSRP) to calculate the path loss. However, the downlink path loss cannot be directly used as the UL path loss. This is because the MR and LR may use different frequencies and different signal formats. An additional path loss offset value needs to be added to compensate for these factors.

[0314] It should be noted that the second adjustment amount can be associated with parameters such as i, j, q, and l, such as ΔP MR->LR,O,b′,f′,c′ (i′,j′,q′,l′).

[0315] As an optional implementation, the method further includes:

[0316] The first device measures, by using the first communication module, a reference signal from the third device to obtain a third path loss;

[0317] The first device determines a path loss offset value according to a difference between the reference signal and the first signal;

[0318] The first device determines the first path loss according to the third path loss and the path loss offset value.

[0319] The third path loss may be a path loss between the first device and the third device measured based on a reference signal corresponding to the first communication module, and the first path loss is a path loss caused by transmitting the first signal between the first device and the third device.

[0320] It should be noted that the signal transmitted by the first communication module and the signal transmitted by the second communication module may be signals of different transmission formats or different bandwidths. Therefore, it is necessary to determine the path loss bias value between the path losses measured based on the two signals based on the difference between the reference signal measured by the first communication module and the first signal, and adjust the third path loss obtained by measuring the reference signal between the first device and the third device based on the first communication module based on the path loss bias value to obtain the first path loss between the second communication module and the third device.

[0321] It is worth mentioning that the path loss offset value may not be independently indicated by the second adjustment value, but may be included in the second path loss or the offset value of the second closed-loop power control.

[0322] In this implementation, the path loss measurement function of the first communication module may be used to determine the path loss between the second communication module and the third device.

[0323] It should be noted that, in the above embodiment, the first communication module is used to measure the one-way path loss of the first signal. In addition, the path loss measurement function of the first communication module can also be used to measure the round-trip path loss of the first signal. For example, when the second device and the third device are located in different physical entity devices, the first communication module is also used to measure the reference signal sent by the second device to determine the path loss of the first signal between the second communication module and the second device.

[0324] It should be noted that, in some implementations, when the second communication module has a reference signal measurement function, the path loss measurement function of the second communication module may also be used to measure the first path loss.

[0325] In some implementations, when the signal transmission bandwidths of the first communication module and the second communication module are different:

[0326] The second adjustment amount includes a first power adjustment amount, and the first power adjustment amount is used to indicate a power adjustment caused by converting the signal transmission bandwidth of the first communication module to the signal transmission bandwidth of the second communication module; or

[0327] The fourth adjustment amount includes a second power adjustment amount, where the second power adjustment amount is used to indicate a power adjustment caused by converting the signal transmission bandwidth of the second communication module to the signal transmission bandwidth of the first communication module.

[0328] The first power adjustment amount and the second power adjustment amount are used to indicate power adjustments caused by different signal transmission bandwidths.

[0329] For example, when the second signal is an orthogonal frequency division multiplexing (OFDM) signal, the first signal is a single carrier signal, and the first signal uses the OFDM signal transmission bandwidth definition to calculate the second target transmit power:

[0330] The first power adjustment amount is:

[0331] The second power adjustment amount is:

[0332] in, The number of RBs of bandwidth B occupied by the first signal; The number of RBs occupied by the second signal in bandwidth B.

[0333] In some embodiments, the first signal uses the OFDM bandwidth definition to calculate the second target transmit power. The second target transmit power may be calculated by converting the parameters of the first signal into second parameters of an equivalent OFDM signal and substituting the second parameters into the following formula:

[0334] or,

[0335] Take the calculation of the second target transmit power based on the following formula as an example:

[0336] In the above embodiment 2, for the parameter item corresponding to the signal bandwidth in MR Since the signal bandwidth of LR is RBs (SCS is 2 μ′ ×15kHz), then the first power adjustment amount to be added is Right now Adjust to

[0337] In the fourth embodiment above, it is assumed that the parameter item corresponding to the signal bandwidth in LR is Since the signal bandwidth of LR is RBs (SCS is 2 μ′ ×15kHz), if the signal bandwidth of MR is (for 2 μ ×15kHz), then the second power adjustment amount to be added is Right now Adjust to

[0338] In some implementations, when the second signal is an orthogonal frequency division multiplexing (OFDM) signal, the first signal is a single carrier signal, and the first signal uses a bandwidth definition of a single carrier to calculate the second target transmit power:

[0339] The first power adjustment amount is:

[0340] The second power adjustment amount is:

[0341] in, Indicates the number of RBs occupied by the second signal in bandwidth B.

[0342] In some embodiments, the first signal uses a single-carrier bandwidth definition to calculate the second target transmit power, which can be calculated by substituting the second parameter into the following formula defined for a single-carrier signal: P'=min{P' CMAX ,P' O,S +PL'+Δ' TF,S +f'}; or P'(i',j',q',l')=min{P' CMAX (i'),P' O,S (i')+PL'(q')+Δ' TF,S +f'(i',l')};

[0343] Take the following formula as an example to calculate the second target transmit power: P'(i',j',q',l')=min{P' CMAX (i'),P' O,S (i')+PL'(q')+Δ' TF,S +f'(i',l')};

[0344] In the above embodiment 2, for the parameter item corresponding to the signal bandwidth in MR Since there is no parameter corresponding to the signal bandwidth in the LR power control calculation formula, the first power adjustment amount that needs to be added is

[0345] In the fourth embodiment, since there is no parameter corresponding to the signal bandwidth in the power control calculation formula of LR, if the signal bandwidth of MR is (for 2 μ ×15kHz), then the second power adjustment amount to be added is

[0346] In some implementations, when the signal transmission formats of the first communication module and the second communication module are different:

[0347] The second adjustment amount includes a third power adjustment amount, and the third power adjustment amount is used to indicate the power adjustment caused by converting the signal transmission format of the first communication module into the signal transmission format of the second communication module; or,

[0348] The fourth adjustment amount includes a fourth power adjustment amount, and the fourth power adjustment amount is used to indicate the power adjustment caused by converting the signal transmission format of the second communication module into the signal transmission format of the first communication module.

[0349] The third power adjustment amount and the fourth power adjustment amount are used to indicate power adjustments caused by different signal transmission formats.

[0350] For example, the third power adjustment amount includes: Δ LR,TF -Δ MR,TF ;

[0351] The fourth power adjustment amount includes: Δ MR,TF -Δ LR,TF ;

[0352] Among them, Δ MR,TF represents the transmission power required by the first communication module in each resource element RE; Δ LR,TF Indicates the transmit power required by the second communication module in each RE;

[0353] When the first signal is an orthogonal frequency division multiplexing (OFDM) signal, the first signal is a single carrier signal, and the second target transmit power is calculated using the bandwidth definition of OFDM for the first signal:

[0354] In a case where the second signal is an orthogonal frequency division multiplexing (OFDM) signal, the first signal is a single carrier signal, and the first signal uses a bandwidth definition of a single carrier to calculate the second target transmit power:

[0355] Wherein, γ' represents the average number of bits carried by each symbol in the first signal; Indicates the number of OFDM subcarriers contained in one RB; represents the number of RBs of the bandwidth B occupied by the first signal; β'0 and β'1 are two offset values; T s represents the time length of a single carrier symbol; B represents the frequency domain width of a single carrier symbol; β'2 and β'3 are two offset values.

[0356] In some implementations, at least one of the first power adjustment amount, the second power adjustment amount, the third power adjustment amount, and the fourth power adjustment amount may be indicated by the network side or agreed upon by protocol.

[0357] In other embodiments, at least one of the first power adjustment amount, the second power adjustment amount, the third power adjustment amount, and the fourth power adjustment amount can be determined by the first device based on the difference between the second signal sent by the first communication module and the first signal sent by the second communication module.

[0358] It should be noted that, when the adjustment amount in the first information (such as at least one of the first adjustment amount, the second adjustment amount, the third adjustment amount, and the fourth adjustment amount) is configured by the network side (such as the fourth device), the configuration method of the adjustment amount may include at least one of the following:

[0359] Configuration method 1: Directly configure the adjustment amount, where BWP, carrier, serving cell, i (occasion), j (parameter set configuration index), q (associated reference signal), l (power control adjustment state index) can be adjusted. For example: using the third target received power of MR's BWP 1 as a reference, adjust the second target received power value of LR's BWP 2, then directly indicate the value of P MR,O,1,f,c The first adjustment amount is ΔP MR->LR,O,2 , then the second target received power value of LR at any f and c can be obtained as P LR,O,2,f,c =P MR,O,1,f,c +ΔP MR->LR,O,2 .

[0360] Configuration method 2: predefine or configure at least two groups of possible adjustment value correspondences, and the network side instructs to activate one of the groups of adjustment values.

[0361] For example, configure at least two possible adjustment amounts based on the following Table 1:

[0362] Table 1

[0363] As shown in Table 1 above, each set of adjustment amounts is uniquely indicated by its own index (0, 1). Thereafter, the network side may indicate the index so that the first device uses a set of adjustment amounts corresponding to the index.

[0364] Configuration method three: configure the static power control parameters in the first parameter and the second parameter respectively, and indicate the dynamic power control parameters in the first parameter and the second parameter through TPC signaling.

[0365] In some implementations, when the first information includes the first parameter and the second parameter, the first device acquiring the first information includes:

[0366] The first device obtains first configuration information;

[0367] The first device receives transmission power control TPC signaling;

[0368] The first configuration information is used to configure a first static power control parameter and a second static power control parameter; the TPC signaling indicates a first dynamic power control parameter and a second dynamic power control parameter;

[0369] The first parameters include the first static power control parameter and the first dynamic power control parameter; the second parameters include the second static power control parameter and the second dynamic power control parameter.

[0370] In some implementations, the first configuration information represents static power control parameters, such as target received power, reference signal, partial path loss compensation factor, etc.

[0371] Optionally, the target static power control parameter includes at least one of the following:

[0372] Target received power;

[0373] Partial path loss compensation factor;

[0374] A parameter set consisting of a target receive power and a partial path loss compensation factor;

[0375] A reference signal for estimating path loss;

[0376] Maximum number of retransmissions;

[0377] Power ramp step size;

[0378] The target static power control parameter includes at least one of the first static power control parameter and the second static power control parameter.

[0379] In some embodiments, when the first communication module and the second communication module have the same type of channel / signal, the first configuration information may be configuration information for power control parameters of an OFDM communication module in related technologies. For example, a field may be added to the configuration information for power control parameters of an OFDM communication module to carry the first static power control parameter via an existing field, and the added field may be used to index the second static power control parameter.

[0380] For example, for at least one channel or signal among PRACH, PUSCH, SRS, and PUCCH, the network side may indicate at least one item of the following parameter groups to the first device through the first configuration information:

[0381] 1) MR's target received power p0-MR, LR's target received power p0-LR;

[0382] Optionally, the first configuration information may indicate an offset value of the target receive power of the MR compared to a given threshold, and an offset value of the target receive power of the LR compared to a given threshold, for example, the target receive power of the Msg3PUSCH may be an offset value compared to the target receive power of the PRACH.

[0383] 2) MR partial path loss compensation factor alpha-MR, LR partial path loss compensation factor alpha-LR;

[0384] 3) A parameter set consisting of the target received power of MR and LR and the partial path loss compensation factor;

[0385] 4) MR estimates the reference signal of the first path loss, and LR estimates the reference signal of the second path loss;

[0386] 5) Maximum number of retransmissions for MR and LR;

[0387] 6) MR power ramp-up step size, LR power ramp-up step size.

[0388] It should be noted that each of the above parameter groups may include 1 absolute value and 1 relative value. For example, if the absolute value of the parameter value of MR is directly indicated, and the parameter value of LR is indicated in the form of an offset value (Offset), then the parameter value actually used by LR is the sum / difference / product / quotient of the MR parameter value and the Offset.

[0389] In some embodiments, when at least one channel / signal is inconsistent between the first communication module and the second communication module, the first configuration information may indicate a first static power control parameter of at least one channel / signal of the MR and a second static power control parameter of at least one channel / signal of the LR.

[0390] It should be noted that, in this embodiment, although the power control parameters of MR and LR are configured separately and the signal / channel types of the two are different, the parameters of a channel / signal of MR or LR can still be used as reference parameters of a channel / signal of another module. Then, the first configuration information only needs to indicate the static power control parameters of the reference channel / signal and the offset value of the static power control parameters of the other module relative to the reference channel / signal.

[0391] In some implementations, the TPC signaling is used to indicate dynamic power control parameters, such as a power control offset value.

[0392] Optionally, the TPC signaling may be a TPC field in the DCI.

[0393] In this embodiment, the power of PUSCH, SRS or PUCCH can be dynamically adjusted through TPC signaling, and according to different usage scenarios, TPC signaling can indicate an absolute power offset value or a relative power offset value. The latter requires all relative power offset values ​​to be accumulated before power control can be performed.

[0394] Optionally, the target dynamic power control parameter includes at least one of the following:

[0395] a first power offset value and a first scaling factor, wherein a second power offset value is determined based on the first power offset value and the first scaling factor;

[0396] a second power offset value and a second scaling factor, the first power offset value being determined based on the second power offset value and the second scaling factor;

[0397] a first identifier, wherein the first identifier is associated with a first power offset value and a second power offset value;

[0398] a first power offset value and a second power offset value;

[0399] a target power offset value and first indication information, wherein the first indication information is used to indicate that the target power offset value is a power offset value of the first communication module or the second communication module;

[0400] Among them, the target dynamic power control parameter includes at least one of the first dynamic power control parameter and the second dynamic power control parameter; the first power offset value is the offset value of the third target transmit power; and the second power offset value is the offset value of the second target transmit power.

[0401] In some implementations, to use TPC signaling for adjusting the power of two modules, the TPC field may be redesigned and interpreted in at least one of the following ways:

[0402] Method 1: The network side indicates which of the first communication module and the second communication module the power bias value carried in the TPC field should be applied to. The first device interprets the scaling factor s from the TPC field and performs at least one of the summation / difference / product / quotient operations based on the power bias value in the TPC field and the scaling factor s to obtain the power bias value of the other communication module in the first communication module and the second communication module.

[0403] Optionally, the power offset value carried in the above TPC field may indicate an absolute power offset value, or a relative power offset value, which is not specifically limited here.

[0404] Method 2: The first identifier can be associated with the first power bias value and the second power bias value in advance through network side configuration or protocol agreement, and the first identifier can be carried through the TPC field. In this way, the first device can obtain two-dimensional information based on the one-dimensional TPC field based on a new interpretation method, that is, interpret the first power bias value and the second power bias value.

[0405] For example, the network side configures the association information between the first identifier and the first power offset value and the second power offset value through the following Table 2:

[0406] Table 2

[0407] As shown in Table 2 above, the TPC field carries a first identifier (i.e., 0 or 1), and the first device determines the LR absolute power offset value and the MR absolute power offset value indicated by the network side based on the first identifier carried by the TPC field, or the LR relative power offset value and the MR relative power offset value, or the LR absolute power offset value and the MR relative power offset value, or the LR relative power offset value and the MR absolute power offset value.

[0408] Method three: The TPC field is designed to indicate two TPC values, which are TPC values ​​of the first communication module and the second communication module respectively.

[0409] Optionally, TPC includes two fields, namely {TPC 1, TPC 2}, where TPC 1 acts on the MR or LR, and TPC 2 acts on another module.

[0410] Optionally, the interpretation tables of TPC 1 and TPC 2 may be the same or different, which is not specifically limited here.

[0411] Optionally, TPC 2 may indicate an offset value relative to TPC 1.

[0412] Mode 4: The TPC field may only be applied to one or both of the MR and the LR, and the communication module to which the TPC field is applied may be indicated in an explicit or implicit manner.

[0413] An implicit indication method is: assuming that the DCI where the TPC is located is a DCI that schedules only one module in the MR and LR, then the TPC value only applies to this module.

[0414] One explicit indication method is: another field different from the TPC field in the DCI indicates the module to which the TPC value applies, for example, the other field is: TPC_module, TPC_module=00 indicates that the LR applies, TPC_module=01 indicates that the MR applies, and TPC_module=10 indicates that both the LR and MR apply.

[0415] In this implementation, the target dynamic power control parameter can be interpreted from the TPC field by designing or interpreting the TPC field.

[0416] It is worth mentioning that in the existing NR protocol, the maximum transmit power is determined by the Radio Resource Control (RRC) parameter P-Max, but NR has only one communication module. In the embodiment of the present application, the first device has two communication modules. In this case, the maximum transmit power of the two communication modules needs to be limited.

[0417] As an optional implementation manner, the third target transmit power and the second target transmit power satisfy at least one of the following conditions:

[0418] First condition: the third target transmit power is less than or equal to the first maximum transmit power, and the second target transmit power is less than or equal to the second maximum transmit power;

[0419] Second condition: the sum of the third target transmit power and the second target transmit power is less than or equal to the target maximum transmit power, and the target maximum transmit power is the maximum total transmit power of the first communication module and the second communication module.

[0420] In some implementations, independent maximum transmit powers may be set for the MR and the LR. In this case, the target transmit power of the MR and the target transmit power of the LR need to be less than or equal to their respective maximum transmit powers.

[0421] Optionally, the network side may indicate a maximum transmit power P-Max and a scaling value P-Scale. In this case, P-Max may be used as the maximum transmit power of one of MR and LR, and the maximum transmit power of the other of MR and LR may be obtained by performing an operation (such as at least one of sum / difference / product / quotient) on P-Scale and P-Max.

[0422] In other implementations, a maximum transmit power may be set for the first device. In this case, the sum of the target transmit powers of the MR and the LR is less than or equal to the maximum transmit power of the first device.

[0423] In some implementations, when the third target transmit power and the second target transmit power do not satisfy the second condition, the method further includes:

[0424] Acquiring, by the first device, second indication information, where the second indication information is used to indicate a transmission power allocation method for the first communication module and the second communication module;

[0425] The first device updates the third target transmit power and the second target transmit power according to the second indication information and the target maximum transmit power, wherein the updated third target transmit power and the second target transmit power meet the second condition.

[0426] In this embodiment, the second indication information indicates the transmission power allocation method of the LR and the MR, so as to prevent the sum of the target transmission powers of the LR and the MR from exceeding the maximum transmission power of the first device.

[0427] Optionally, the second indication information is used to indicate any one of the following:

[0428] the proportions of the third target transmit power and the second target transmit power in the total transmit power of the first device respectively; or

[0429] When the sum of the target transmit power of the first communication module and the target transmit power of the second communication module is greater than the target maximum transmit power, the target transmit power of the first communication module or the second communication module is preferentially reduced so that the sum of the third target transmit power and the second target transmit power is less than or equal to the target maximum transmit power.

[0430] In this embodiment, the second indication information may constrain the target transmit power of at least one of the MR and the LR in any of the following ways:

[0431] 1) Define a power ratio for at least one of the MR and LR. This allows you to determine the ratio of the transmit power of at least one of the MR and LR to the maximum transmit power of the first device based on the power ratio. For example, limit the maximum transmit power of the LR to less than or equal to 20% of the maximum transmit power of the first device, and the remaining 80% of the maximum transmit power of the first device is the maximum transmit power of the MR.

[0432] 2) When the sum of the target transmit powers of MR and LR calculated based on the power control calculation formula is greater than the maximum transmit power of the first device, the second indication information can be used to indicate how to reduce the transmit power of the first device, for example: scaling the target transmit powers of MR and LR so that the sum of the target transmit powers of MR and LR is less than or equal to the target maximum transmit power, or, it is possible to prioritize ensuring that the transmit power of MR or LR remains unchanged, and only reduce the transmit power of the other communication module so that the total transmit power of the first device is not less than or equal to the target maximum transmit power.

[0433] Optionally, the relevant parameters of the maximum transmit power of at least one of the above-mentioned MR and LR (such as the maximum transmit power of MR, the maximum transmit power of LR, the scaling value P-Scale, the maximum transmit power P-Max, the second indication information, etc.) can be based on RRC or other signaling indications.

[0434] It should be noted that there are various reference signals for measuring the first path loss and various measurement nodes for performing path loss. Under different path loss measurement schemes, the first path loss may be the same as or different from the second path loss.

[0435] For example: Suppose the second device sends a second signal, which is used for the second communication module to perform backscattering to generate and send the first signal, and the third device receives the first signal. At this time, if the second device and the third device are located in the same physical entity device, the second communication module measures the reference signal sent by the second device, then the measured first path loss is the one-way path loss between the second communication module and the second device, and in the actual backscatter communication process, the second path loss that needs to be compensated is the round-trip path loss between the second communication module and the second device, that is, the second path loss = 2*first path loss.

[0436] Optionally, the second path loss includes a target modulation loss PL Mod , the target modulation loss PL Mod Including the modulation loss caused by the second communication module backscattering the signal.

[0437] In this embodiment, the second path loss may also take into account the target modulation loss caused by the backscatter modulation of the second communication module. For example, the second path loss = 2 * first path loss + target modulation loss.

[0438] It should be noted that if the second communication module does not have the path loss measurement capability, the measured path loss may be:

[0439] 1) The measured first path loss is the round-trip path loss + the modulation loss. For example, assuming that the second device and the third device are located in the same physical device, the second device sends a reference signal and receives the reference signal reflected by the first device, and measures the first path loss based on the reference signal. In this case, the first path loss is the round-trip path loss between the first device and the second device + the target modulation loss.

[0440] 2) The measured first path loss is only a one-way path loss and does not take into account the target modulation loss. For example, assuming that the second device and the third device are located in the same physical entity device, the first device sends a reference signal, and the second device measures the first path loss based on the reference signal. At this time, the first path loss is the one-way path loss between the first device and the second device and does not include the target modulation loss.

[0441] 3) The reference signal sent by the second device is measured through the first communication module. At this time, based on the bandwidth, signal format differences between the reference signal and the first signal, there is a difference between the measured path loss and the actual path loss of the first signal. At this time, the path loss measured by the first communication module needs to be adjusted to obtain the actual path loss of the first signal. For example: based on the bandwidth and signal format differences between the reference signal measured by the first communication module and the first signal, the power loss bias value is determined, and the path loss measured by the first communication module is added, subtracted, multiplied, divided, etc. and the power loss bias value are subjected to at least one of the following operations to obtain the actual path loss of the first signal.

[0442] The following example illustrates the first path loss and the second path loss based on the LR topology:

[0443] 1) In connection topology 1 shown in FIG9a, connection topology 2 shown in FIG9b, and connection topology 4 shown in FIG9e, the second device and the third device are the same device. For Device A or Device B, the path loss of the first signal is a round-trip path loss. For example, the path loss from the second communication module to the UE / gNB / assistant node is PL LR->UE / gNB , then the actual second path loss is 2*PL LR->UE / gNB (dB).

[0444] Optionally, if the power loss caused by the modulation signal of the second communication module is taken into account, the target modulation loss PL needs to be added to the final path loss. Mod , that is, the second path loss is 2*PL LR>UE / gNB +PL Mod (dB).

[0445] In some embodiments, if the second communication module cannot measure the reference signal, the reference signal sent by the second device can be reflected on the specified time-frequency resources, and the second device can measure the path loss. The first path loss obtained by the measurement is the round-trip path loss, but this belongs to closed-loop power control, not open-loop power control. At this time, it can be considered that the open-loop power control does not exist or is invalid.

[0446] Optionally, for connection topology 2, it is assumed that the relay therein is a regenerative relay, that is, only the path loss between the auxiliary node and the second communication module is considered, and the path loss between the auxiliary node and the network side is compensated by the auxiliary node itself.

[0447] 2) For connection topology 3 as shown in FIG9c and FIG9d, the nodes for uplink and downlink transmission on the second communication module and the network side are different, that is, the second device and the third device are two different devices. In this case, the uplink and downlink path losses are asymmetric.

[0448] Taking the connection topology 3 shown in Figure 9c as an example, for Device A or Device B, the path loss for uplink power control includes two sections, from the second device -> second communication module, and from the second communication module -> third device, which can be respectively determined by the reference signal sent by the second device (assuming that the measured path loss PL LR1 ), and measured by the reference signal sent by the third device (assuming that the measured path loss PL LR2 ), then the two path losses are summed, i.e. the second path loss PL LR =PL LR1 +PL LR2 (dB).

[0449] Optionally, if the power loss caused by the modulation signal of the second communication module is taken into account, the target modulation loss PL needs to be added to the final path loss. Mod , that is, the second path loss PL LR =PL LR1 +PL LR2 +PL Mod (dB).

[0450] It should be noted that if the second communication module cannot measure the reference signal sent by any one of the second device and the third device, or the corresponding reference signal does not exist, then the second communication module cannot perform open-loop power control.

[0451] In some implementations, during the open-loop power control process, the first path loss may be measured in the following two ways:

[0452] 1) The second communication module measures a reference signal sent by at least one of the second device and the third device to obtain a first path loss.

[0453] 2) The second communication module sends a reference signal, and at least one of the second device and the third device measures the reference signal to obtain a first path loss.

[0454] In some implementations, the method for measuring the first path loss may be determined based on whether the second communication module has a path loss measurement capability.

[0455] For example: when the second communication module has the path loss measurement capability, at least one of the second device and the third device sends a reference signal, and the second communication module measures the reference signal to obtain the first path loss; when the second communication module does not have the path loss measurement capability, the second communication module sends a reference signal, and at least one of the second device and the third device measures the reference signal to obtain the first path loss.

[0456] As an optional implementation manner, when the first information includes the second target transmit power, the method further includes:

[0457] The first device determines at least one of the first power control bias value, the second power control bias value, and the third power control bias value based on the second target transmit power and first capability information, wherein the first capability information is related to the power control of at least one of the first communication module and the second communication module.

[0458] Optionally, the first capability information includes at least one of the following:

[0459] first indication information, where the first indication information is used to indicate whether the first communication module can perform power control;

[0460] the minimum transmit power of the first communication module;

[0461] the maximum transmit power of the first communication module;

[0462] an available power set of the first communication module;

[0463] second indication information, where the second indication information is used to indicate whether the second communication module can perform power control;

[0464] the maximum power attenuation capability of the second communication module;

[0465] the maximum power amplification capability of the second communication module;

[0466] a power attenuation value set of the second communication module;

[0467] A power amplification value set of the second communication module.

[0468] In some embodiments, the second target transmit power can be calculated by the first device, or the second target transmit power can be calculated by a network side device (such as a second device, a third device, or a fourth device), and the second target transmit power or a second parameter for calculating the second target transmit power is sent to the first device.

[0469] In some implementations, the first device may determine, based on the second target transmit power and the current transmit power of the first device, whether power amplification or power attenuation processing needs to be performed on the current transmit power, and an offset value for the power amplification or power attenuation processing:

[0470] 1) When the capability of the second communication module supports power control of the bias value of the power amplification or power attenuation processing, the first power control bias value may be determined to adjust the transmit power of the first signal by the second communication module to a second target transmit power based on the first power control bias value;

[0471] 2) When the capabilities of the second communication module do not support power control of the bias value of the power amplification or power attenuation processing, and the excitation source signal of the first signal is sent by the second device, the third power control bias value can be determined to adjust the transmit power of the second signal by the second device to the first target transmit power based on the third power control bias value, thereby causing the second communication module to generate the first signal sent according to the second target transmit power under the influence of the first target transmit power; alternatively, the first power control bias value and the third power control bias value can be determined to adjust the transmit power of the second communication module based on the first power control bias value, and to adjust the transmit power of the second signal by the second device based on the third power control bias value, ultimately achieving the adjustment of the transmit power of the first signal by the second communication module to the second target transmit power;

[0472] 3) When the capability of the second communication module does not support the power control of the bias value of the power amplification or power attenuation processing, and the excitation source signal of the first signal is provided by the first communication module, the second power control bias value can be determined to adjust the transmission power of the second signal by the first communication module to the first target transmission power based on the second power control bias value, so that the second communication module generates a first signal sent according to the second target transmission power under the influence of the first target transmission power; or, the first power control bias value and the second power control bias value can be determined to adjust the transmission power of the second communication module based on the first power control bias value, and adjust the transmission power of the second signal by the first communication module based on the second power control bias value, and finally adjust the transmission power of the first signal by the second communication module to the second target transmission power.

[0473] In this embodiment, the first device determines the power bias value of the second communication module, the first communication module and at least one of the second device based on the power control-related capability information of at least one of the first communication module and the second communication module, and the second target transmission power, so as to ultimately enable the second communication module to send the first signal according to the second target transmission power.

[0474] As another optional implementation manner, when the first information includes the second target transmit power, the method further includes:

[0475] The first device sends first capability information to a fourth device, wherein the first capability information is related to power control of at least one of the first communication module and the second communication module;

[0476] The first device receives at least one of a first power control offset value and a second power control offset value from the fourth device.

[0477] In this embodiment, the first device reports capability information related to power control of at least one of the first communication module and the second communication module to the fourth device, and the fourth device calculates the second target transmission power and allocates power bias values ​​to the first communication module and the second communication module based on the second target transmission power and the current transmission power of the second communication module, so as to ultimately enable the second communication module to send the first signal according to the second target transmission power.

[0478] It should be noted that, in some embodiments, the second signal is sent by the second device. At this time, the fourth device can also obtain second capability information, which is related to the power control of the second device; and the fourth device can also send a third power control bias value to the second device. The third power control bias value is used to adjust the transmission power of the second device to the second signal to the first target transmission power, so as to ultimately enable the second communication module to send the first signal according to the second target transmission power.

[0479] In some embodiments, before the first device receives at least one of the first power control offset value and the second power control offset value from the fourth device, the method further includes:

[0480] The first device sends third information to the fourth device, where the third information includes at least one of the following:

[0481] the second target transmit power;

[0482] second parameters, the second parameters comprising parameters for determining the second target transmit power;

[0483] a fourth power control offset value, where the fourth power offset value is an offset value between the second target transmit power and the current transmit power of the transmitter of the second signal;

[0484] A first transmission power, where the first transmission power is the transmission power obtained by subtracting a second path loss from the second target transmission power, and the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

[0485] In some implementations, the first device calculates the second target transmit power and sends the second target transmit power to the fourth device, or sends a second parameter used to calculate the second target transmit power, so that the fourth device learns the second target transmit power accordingly.

[0486] In other embodiments, the first device calculates the second target transmit power and sends a bias value between the second target transmit power and the current transmit power of the transmitter of the second signal to the fourth device, so that the fourth device determines at least one of the first power control bias value, the second power control bias value and the third power control bias value based on this, for example: determining that the third power control bias value is equal to the fourth power bias value.

[0487] In some other embodiments, the first device sends the calculated first transmission power to the fourth device, and the fourth device can additionally obtain the path loss compensated by the first signal and the second signal, thereby adding a compensation power that can make up for the path loss of the first signal and the second signal on the basis of the first transmission power to obtain the second target transmission power.

[0488] As an optional implementation manner, when the transmitting end of the second signal is the second device, and the downlink of the first communication module provides the uplink radio frequency carrier of the second communication module, the method further includes:

[0489] The first device measures a reference signal sent by a third device to obtain a third path loss, where the third device is a receiving end device of the first signal;

[0490] The first device measures the reference signal sent by the second device to obtain a fourth path loss;

[0491] The first path loss includes the third path loss and the fourth path loss.

[0492] In this embodiment, when the second device and the third device are located in different physical entities, the uplink and downlink path losses of the second communication module are asymmetric. At this time, it is necessary to measure the path loss between the first device and the second device, and the path loss between the first device and the third device separately.

[0493] In some implementations, when the sending end of the first signal is the first communication module, the method further includes:

[0494] The first device measures the reference signal sent by the second device to obtain the first path loss.

[0495] In this implementation, when the transmitter of the first signal is the first communication module, since the first communication module and the second communication module are co-located in the first device, the path loss between the first communication module and the second communication module may not be considered.

[0496] Optionally, when the transmitting end of the first signal is the second device, and the downlink of the first communication module provides an uplink radio frequency carrier of the second communication module, the method further includes:

[0497] The first device backscatters a reference signal sent by a third device, where the third device is a receiving end device of the first signal;

[0498] The first device receives fourth information or first signaling from the third device;

[0499] The fourth information includes the first path loss, or the fourth information includes the first path loss and a partial path loss compensation factor; and the first signaling is used to indicate a bias value of closed-loop power control.

[0500] In some implementations, the first signaling is used to indicate an offset value for closed-loop power control, and may include the first power control offset value as an offset value for closed-loop power control.

[0501] In an embodiment of the present invention, when the fourth information includes the first path loss, or when the fourth information includes the first path loss and a partial path loss compensation factor, the first device can determine at least one of the first power control bias value, the second power control bias value, and the third power control bias value for compensating for the first path loss.

[0502] In this embodiment, when the transmitting end of the first signal is the second device and the downlink of the first communication module provides the uplink RF carrier of the second communication module, a closed-loop power control method can be used to estimate the path loss of the first signal, that is, the third device sends a reference signal and performs backscattering based on the reference signal through the second communication module. Thereafter, the third device can estimate the first path loss based on the signal backscattered by the second communication module.

[0503] In some implementations, when the sending end of the first signal is the first communication module, the method further includes:

[0504] The first device controls the first communication module to send a reference signal;

[0505] The first device controls the second communication module to backscatter the reference signal sent by the first communication module;

[0506] The first device receives fourth information or first signaling from a third device, where the third device is a receiving end device of the first signal;

[0507] The fourth information includes the first path loss, or the fourth information includes the first path loss and a partial path loss compensation factor; and the first signaling is used to indicate a bias value of closed-loop power control.

[0508] Similar to the previous embodiment, in this embodiment, when the transmitter of the first signal is the first communication module, closed-loop power control can also be used to measure and compensate for the path loss of the first signal. The specific path loss measurement process is as follows: the first communication module transmits a reference signal, the second communication module backscatters the reference signal, and the third device estimates the first path loss based on the reference signal backscattered by the second communication module.

[0509] In some implementations, the first path loss is measured by the first communication module or the second communication module.

[0510] Optionally, when the first path loss is measured by the first communication module, the method further includes:

[0511] Determining, by the first device, a path loss offset value based on a difference between a reference signal measured by the first communication module and the first signal;

[0512] The first device determines the second path loss according to the first path loss and the path loss offset value.

[0513] It should be noted that the signal transmitted by the first communication module and the signal transmitted by the second communication module may be signals of different transmission formats or different bandwidths. Therefore, it is necessary to determine the path loss bias value between the path losses measured based on the two signals based on the difference between the reference signal and the second signal measured by the first communication module, and adjust the first path loss measured by the first communication module based on the path loss bias value to obtain the second path loss of the first signal.

[0514] Optionally, the path loss offset value may be indicated by a second adjustment value. Currently, the path loss offset value may not be independently indicated by the second adjustment value, but may be included in the second path loss or the second closed-loop power control offset value.

[0515] It should be noted that, in some implementations, when the second communication module has a reference signal measurement function, the path loss measurement function of the second communication module may also be used to measure the path loss of the first signal.

[0516] It should be noted that the power offset value in the embodiment of the present application may be an offset value relative to the current transmit power, for example, the first power control offset value is an offset value relative to the current transmit power of the second communication module. Alternatively, the power offset value in the embodiment of the present application may be a power offset value relative to a specified reference signal, for example, the second power control offset value is a power offset value relative to a reference SSB signal. In the case where the power offset value is a power offset value relative to a specified reference signal, the reference signal may be indicated by protocol agreement or network-side indication.

[0517] In addition, in the embodiment of the present application, the current transmit power of the first communication module, the current transmit power of the second communication module, and the current transmit power of the second device can be the reference signal transmit power indicated by the network side or agreed upon by the protocol, such as the transmit power of SSB, that is, the power offset value is an offset value relative to the transmit power of the specified reference signal. At this time, if the reference signal associated with the power offset value is unknown to the other end, then the first device or the fourth device also needs to indicate the reference signal associated with the offset value when indicating the power offset value.

[0518] To facilitate understanding of the path loss measurement and compensation solution in the embodiment of the present application, assuming that the first device is a UE, the path loss measurement and compensation are illustrated with the following scenario:

[0519] Scenario 1: The MR's downlink provides the LR's uplink RF carrier.

[0520] Solution 1: When the UE measures the first path loss, the path loss measurement and compensation solution includes the following steps:

[0521] 1a) The UE measures the reference signal sent by the third device and determines the path loss PL from the LR to the third device. LR-Rx (dB);

[0522] 2a) The UE measures the reference signal sent by the second device and determines the path loss PL from the second device to the LR. LR-Rx (dB);

[0523] 3a) UE obtains the total path loss PL Total =PL LR-Rx +PL Tx-LR (dB);

[0524] Optionally, if the second device and the third device are the same device, only the measurement signal sent by the second device needs to be measured, and twice the measured path loss (in dB) is the total path loss.

[0525] Alternatively, if the power loss PL due to LR modulation is considered UE , you can also use PL Total Plus PLUE (dB), also known as PL Total =PL LR-Rx +PL Tx-LR +PL UE .

[0526] 4a) The UE determines a second target transmit power of the LR radio frequency carrier, indicates a power offset value of the MR (i.e., a second power control offset value) to the second device or to the second device via a third device, and adjusts the downlink signal transmit power of the MR (i.e., the first target transmit power).

[0527] Optionally, when determining the target transmit power, the UE may further add a power offset value for closed-loop power control according to TPC signaling from the second device or the third device.

[0528] Optionally, the second power control offset value (dB)=the second target transmit power (dBm)−the current downlink transmit power (dBm) of the MR−the power offset value of the LR itself.

[0529] 5a) The second device adjusts the transmit power of the MR downlink signal according to the second power offset value, but the power shall not be greater than the maximum transmit power of the MR downlink signal.

[0530] Solution 2: When the third device measures the first path loss, the path loss measurement and compensation solution includes the following steps:

[0531] 1b) The third device measures the reference signal forwarded by the LR and sent by the second device to determine the total path loss PL of the MR downlink signal forwarded by the LR to the receiving end. Total (dB);

[0532] Alternatively, if the power loss PL due to LR modulation is considered UE , UE can add PL to the total path loss UE (dB), or report to a third device by adding PL to the total path loss UE (dB).

[0533] 2b) The UE indicates to the third device a second target transmit power excluding the path loss, and the third device determines the second target transmit power. Alternatively, the UE indicates to the third device a second parameter for determining the second target transmit power, and the third device independently calculates the second target transmit power. Alternatively, the third device indicates to the UE the measured total path loss, and the UE determines the second target transmit power and then indicates it to the third device.

[0534] 3b) The third device configures the first power control offset value for the UE and configures the third power control offset value for the second device.

[0535] Optionally, before the above step iii), at least one of the UE and the second device may report power control-related capability information to the third device.

[0536] 4b) The second device adjusts the transmit power of the MR downlink signal according to the third power offset value, but the third power offset value shall not be greater than the maximum transmit power of the MR downlink signal.

[0537] Scenario 2: The MR's uplink provides the LR's uplink RF carrier.

[0538] In this scenario 2, the UE itself is the RF carrier provider of the LR. The signal is sent from the MR antenna, modulated by the LR antenna, and then sent to the receiving end on the network side. Therefore, it is equivalent to setting the path loss from the second device -> LR in scenario 1 to a certain known value PL MR-LR , for example, if there is no loss, PL MR-LR =0dB, or there is loss, then PL MR-LR >0dB.

[0539] Similar to Scenario 1 above, Scenario 2 includes the following two path loss measurement and compensation solutions:

[0540] Solution 1': When the UE measures the first path loss, the path loss measurement and compensation solution includes the following steps:

[0541] 1c) The UE measures the reference signal sent by the third device and determines the path loss PL from the LR to the third device. LR-Rx (dB), which is also the total path loss PL Total ;

[0542] Alternatively, if the loss PL from MR to LR is considered MR-LR And the power loss PL caused by LR modulation UE , you can also add PL MR-LR and PL UE (dB), also known as PL Total =PL Tx-LR +PL UE +PL MR-LR .

[0543] 2c) The UE determines the first target transmit power of the MR according to the power control criterion of the LR (ie, with the purpose of the LR transmitting the first signal according to the second target transmit power).

[0544] Optionally, when determining the first target transmit power, the UE may further add a power offset value for closed-loop power control according to TPC signaling from the third device.

[0545] Optionally, the second power control offset value (dB)=the first target transmit power (dBm)−the current downlink transmit power (dBm) of the MR−the power offset value of the LR itself.

[0546] 3c) The UE adjusts the uplink signal transmission power of the MR according to the power control criteria of the MR and the power control criteria of the LR.

[0547] Optionally, the uplink signal transmission power actually adopted by the MR needs to satisfy power control criteria of both the MR and the LR.

[0548] The power control criteria include:

[0549] 1. For the transmitter, its transmit power is less than or equal to the maximum transmit power of the transmitter;

[0550] 2. For the receiving end, its received power is greater than or equal to the target received power.

[0551] Among them, if the receiving power of the receiving end is greater than or equal to the target receiving power, it can be converted into the transmitting power of the transmitting end being greater than or equal to the specified transmitting power, so that the receiving power of the receiving end is greater than or equal to the target receiving power.

[0552] At this time, the uplink signal transmission power actually adopted by the above-mentioned MR needs to meet the power control criteria of both MR and LR. It can be to prioritize ensuring that the receiving power and transmitting power of LR meet the power control criteria of LR. At this time, the receiving power of MR may not meet its corresponding power control criteria. For example: in order to ensure that LR sends the first signal according to the second target transmission power, the receiving power of MR may be less than the target receiving power of MR.

[0553] Solution 2': Assuming that the third device and the fourth device are the same device, when the third device measures the first path loss, the path loss measurement and compensation solution includes the following steps:

[0554] 1d) The third device measures the reference signal forwarded by the LR and sent by the MR to determine the total path loss PL of the MR uplink signal forwarded by the LR to the receiving end. Total (dB);

[0555] Alternatively, if the power loss PL due to LR modulation is considered UE , UE can add PL to the total path loss UE (dB), or report to a third device by adding PL to the total path loss UE (dB).

[0556] It is worth noting that in this embodiment, PL Total The signal loss from MR to LR has been taken into account, and there is no need to compensate for PL. MR-LR.

[0557] 2d) The UE indicates to the third device a second target transmit power excluding the path loss, and the third device determines the second target transmit power. Alternatively, the UE indicates to the third device a second parameter for determining the second target transmit power, and the third device independently calculates the second target transmit power. Alternatively, the third device indicates to the UE the measured total path loss, and the UE determines the second target transmit power and then indicates it to the third device.

[0558] 3d) The third device configures the first power control offset value and the second power control offset value for the UE.

[0559] Optionally, before the above step iii'), at least one of the UE and the second device may report power control-related capability information to the third device.

[0560] 4d) The UE applies the first power control offset value to the LR to adjust the transmit power, and applies the second power control offset value to the MR to adjust the transmit power.

[0561] Optionally, the uplink signal transmit power actually adopted by the MR must meet the power control criteria of both the MR and the LR. The power control criteria of the MR may include that the MR transmits the second signal according to the first target transmit power, and the uplink signal transmit power shall not be greater than the uplink maximum transmit power of the MR. The power control criteria of the LR may include that the LR transmits the first signal according to the second target transmit power, and the uplink signal transmit power actually adopted by the LR shall not be greater than the uplink maximum transmit power of the LR.

[0562] Referring to Figure 12, an embodiment of the present application further provides another transmit power control method, which is executed by a fourth device. As shown in Figure 12, the another transmit power control method executed by the fourth device includes the following steps:

[0563] Step 121: The fourth device performs a second operation, where the second operation includes at least one of the following:

[0564] Sending first information to the first device;

[0565] sending second information to the first device;

[0566] Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power;

[0567] The first device includes a first communication module and a second communication module, the second communication module is an extremely low power consumption communication module, and the second information includes relevant information for determining the first information;

[0568] The first information includes at least one of the following:

[0569] a second target transmit power of the second communication module, where the second target transmit power is a target transmit power for sending the first signal by the second communication module;

[0570] a first power control offset value, where the first power control offset value is used to adjust the transmit power of the second communication module for the first signal to a second target transmit power;

[0571] a second power control offset value, where the second power control offset value is used to adjust the transmit power of the first communication module for the second signal to a first target transmit power;

[0572] The transmitting end of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module.

[0573] In some implementations, the fourth device may be a device for configuring or indicating the first information to the first device, such as a network-side device. The network-side device may be an access network device or a core network device. Where the fourth device includes a core network device, the target receive power and other requirement information may be obtained using an application server in the core network, or the target transmit power may be calculated using a calculation function in the core network.

[0574] It should be noted that the above-mentioned first information, second information, first device, first communication module, second communication module, first signal, first target transmit power, second signal, second target transmit power, first power control bias value, second power control bias value and third power control bias value have the same meaning and function as the first information, second information, first device, first communication module, second communication module, first signal, first target transmit power, second signal, second target transmit power, first power control bias value, second power control bias value and third power control bias value in the first device side method embodiment, and will not be repeated here.

[0575] The embodiment of the present application corresponds to the first device-side method embodiment, wherein the first device-side method embodiment is used to adjust the transmit power of the first signal generated by the second communication module based on the second signal to the second target transmit power. The fourth device-side method embodiment can provide support for the first device to adjust the transmit power of the first signal generated by the second communication module based on the second signal to the second target transmit power. It can also coordinately configure the power control parameters of the first communication module and the second device to achieve path loss measurement and compensation, etc.

[0576] In some embodiments, the second information includes at least one of the following:

[0577] a third target transmit power and a first adjustment amount of the first communication module, wherein the second target transmit power is determined based on the third target transmit power and the first adjustment amount;

[0578] a first parameter and a second adjustment amount of the first communication module, wherein the second parameter is determined based on the first parameter and the second adjustment amount;

[0579] The second parameter;

[0580] The first parameter includes a parameter used to determine the third target transmit power; and the second parameter includes a parameter used to determine the second target transmit power.

[0581] In some embodiments, the second parameter includes at least one or a combination of at least two of the following parameters corresponding to the second communication module:

[0582] target received power, first path loss, second path loss, maximum transmit power, type of the first signal, time length of a symbol in the first signal, frequency domain width of a symbol in the first signal, offset value of closed-loop power control, number of RBs in the occupied bandwidth of the first signal, number of subcarriers contained in each RB of the first signal, average number of bits carried by each symbol in the first signal, partial path loss compensation factor;

[0583] The first path loss is the power loss of the transmission path of the first signal and the second signal obtained based on the reference signal measurement; the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

[0584] In some implementations, when the first information includes the second target transmit power, the method further includes:

[0585] The fourth device receives first capability information from the first device, wherein the first capability information is related to power control of at least one of the first communication module and the second communication module;

[0586] The fourth device sends at least one of the first power control offset value and the second power control offset value to the first device according to the first capability information and the second target transmit power.

[0587] In some implementations, when the first information includes the second target transmit power, the method further includes:

[0588] The fourth device receives second capability information from the second device, where the second capability information is related to power control of the second device;

[0589] The fourth device sends a third power control offset value to the second device based on the second capability information and the second target transmit power; wherein the third power control offset value is used to adjust the transmit power of the second device for the second signal to the first target transmit power.

[0590] In some embodiments, the first capability information includes at least one of the following:

[0591] first indication information, where the first indication information is used to indicate whether the first communication module can perform power control;

[0592] the minimum transmit power of the first communication module;

[0593] the maximum transmit power of the first communication module;

[0594] an available power set of the first communication module;

[0595] second indication information, where the second indication information is used to indicate whether the second communication module can perform power control;

[0596] the maximum power attenuation capability of the second communication module;

[0597] the maximum power amplification capability of the second communication module;

[0598] a power attenuation value set of the second communication module;

[0599] A power amplification value set of the second communication module.

[0600] In some embodiments, the second capability information includes at least one of the following:

[0601] the minimum transmit power of the second device;

[0602] the maximum transmit power of the second device;

[0603] The available power set of the second device.

[0604] In some implementations, before the fourth device sends a third power control offset value to the second device based on the second capability information and the second target transmit power, the method further includes:

[0605] The fourth device receives third information from the first device;

[0606] The fourth device determines the second target transmit power according to the third information;

[0607] The third information includes at least one of the following:

[0608] the second target transmit power;

[0609] second parameters, the second parameters comprising parameters for determining the second target transmit power;

[0610] a fourth power control offset value, where the fourth power offset value is a power offset value between the second target transmit power and the current transmit power of the transmitter of the second signal;

[0611] A first transmission power, where the first transmission power is the transmission power obtained by subtracting a second path loss from the second target transmission power, and the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

[0612] In the embodiment of the present application, the steps performed by the fourth device correspond to the steps performed by the first device in the first device side method embodiment, and the two cooperate with each other to jointly realize the control of the uplink transmission power of the second communication module on the first device.

[0613] The transmit power control method provided in the embodiment of the present application can be executed by a transmit power control device. In the embodiment of the present application, the transmit power control device performing the transmit power control method is used as an example to illustrate the transmit power control device provided in the embodiment of the present application.

[0614] 13 , an embodiment of the present application further provides a transmit power control apparatus, which is applied to a first device. As shown in FIG13 , the transmit power control apparatus 1300 includes:

[0615] A first acquisition module 1301 is configured to acquire first information, wherein the first device includes a first communication module and a second communication module, and the second communication module is an extremely low power consumption communication module;

[0616] A first execution module 1302, configured to execute a first operation according to the first information;

[0617] The first information includes at least one of the following:

[0618] a second target transmit power of the second communication module;

[0619] a first power control offset value;

[0620] a second power control offset value;

[0621] The first operation includes at least one of the following:

[0622] controlling the second communication module to transmit the first signal according to the second target transmit power;

[0623] Controlling the second communication module to apply the first power control offset value to adjust the transmit power of the first signal to a second target transmit power;

[0624] Controlling the first communication module to apply the second power control offset value to adjust the transmit power of the second signal to the first target transmit power;

[0625] Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power;

[0626] The transmitting end of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module.

[0627] In some implementations, the first acquisition module 1301 is specifically configured to:

[0628] Acquire second information, and determine the first information based on the second information;

[0629] The second information includes at least one of the following:

[0630] a third target transmit power and a first adjustment amount of the first communication module, wherein the second target transmit power is determined based on the third target transmit power and the first adjustment amount;

[0631] a first parameter and a second adjustment amount of the first communication module, wherein the second parameter is determined based on the first parameter and the second adjustment amount;

[0632] The second parameter;

[0633] The first parameters include parameters used to determine the third target transmit power; the second parameters include parameters used to determine the second target transmit power.

[0634] In some embodiments, the second parameter includes at least one or a combination of at least two of the following parameters corresponding to the second communication module:

[0635] target received power, first path loss, second path loss, maximum transmit power, type of the first signal, time length of a symbol in the first signal, frequency domain width of a symbol in the first signal, offset value of closed-loop power control, number of RBs in the occupied bandwidth of the first signal, number of subcarriers contained in each RB of the first signal, average number of bits carried by each symbol in the first signal, partial path loss compensation factor;

[0636] The first path loss is the power loss of the transmission path of the first signal and the second signal obtained based on the reference signal measurement; the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

[0637] In some implementations, when the first information includes the second target transmit power, the transmit power control apparatus 1300 further includes:

[0638] A first determination module is used to determine at least one of the first power control bias value, the second power control bias value and the third power control bias value based on the second target transmit power and first capability information, wherein the first capability information is related to the power control of at least one of the first communication module and the second communication module.

[0639] In some implementations, when the first information includes the second target transmit power, the transmit power control apparatus 1300 further includes:

[0640] a first sending module, configured to send first capability information to a fourth device, wherein the first capability information is related to power control of at least one of the first communication module and the second communication module;

[0641] The first receiving module is configured to receive at least one of the first power control offset value and the second power control offset value from the fourth device.

[0642] In some implementations, the transmit power control apparatus 1300 further includes:

[0643] The second sending module is configured to send third information to the fourth device, where the third information includes at least one of the following:

[0644] the second target transmit power;

[0645] second parameters, the second parameters comprising parameters for determining the second target transmit power;

[0646] a fourth power control offset value, where the fourth power offset value is an offset value between the second target transmit power and the current transmit power of the transmitter of the second signal;

[0647] A first transmission power, where the first transmission power is the transmission power obtained by subtracting a second path loss from the second target transmission power, and the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

[0648] In some embodiments, the first capability information includes at least one of the following:

[0649] first indication information, where the first indication information is used to indicate whether the first communication module can perform power control;

[0650] the minimum transmit power of the first communication module;

[0651] the maximum transmit power of the first communication module;

[0652] an available power set of the first communication module;

[0653] second indication information, where the second indication information is used to indicate whether the second communication module can perform power control;

[0654] the maximum power attenuation capability of the second communication module;

[0655] the maximum power amplification capability of the second communication module;

[0656] a power attenuation value set of the second communication module;

[0657] A power amplification value set of the second communication module.

[0658] In some implementations, when the transmitting end of the second signal is the second device and the downlink of the first communication module provides the uplink radio frequency carrier of the second communication module, the transmission power control apparatus 1300 further includes:

[0659] A first measurement module is configured to measure a reference signal sent by a third device to obtain a third path loss, where the third device is a receiving end device of the first signal;

[0660] A second measurement module, configured to measure a reference signal sent by the second device to obtain a fourth path loss;

[0661] The first path loss includes the third path loss and the fourth path loss.

[0662] In some implementations, when the transmitting end of the first signal is the second device and the downlink of the first communication module provides an uplink radio frequency carrier of the second communication module, the transmission power control apparatus 1300 further includes:

[0663] a backscattering module, configured to backscatter a reference signal sent by a third device, the third device being a receiving end device of the first signal;

[0664] a fifth receiving module, configured to receive fourth information or first signaling from the third device;

[0665] The fourth information includes the first path loss, or the fourth information includes the first path loss and a partial path loss compensation factor; and the first signaling is used to indicate a bias value of closed-loop power control.

[0666] In some implementations, when the transmitter of the first signal is the first communication module, the transmission power control apparatus 1300 further includes:

[0667] The third measurement module is configured to measure the reference signal sent by the second device to obtain the first path loss.

[0668] In some implementations, when the transmitter of the first signal is the first communication module, the transmission power control apparatus 1300 further includes:

[0669] A first control module, configured to control the first communication module to send a reference signal;

[0670] a second control module, configured to control the second communication module to backscatter the reference signal sent by the first communication module;

[0671] a sixth receiving module, configured to receive fourth information or first signaling from a third device, where the third device is a receiving end device of the first signal;

[0672] The fourth information includes the first path loss, or the fourth information includes the first path loss and a partial path loss compensation factor; and the first signaling is used to indicate a bias value of closed-loop power control.

[0673] In some implementations, the first path loss is measured by the first communication module or the second communication module.

[0674] In some implementations, when the first path loss is measured by the first communication module, the transmit power control apparatus 1300 further includes:

[0675] a third determining module, configured to determine a path loss offset value according to a difference between the reference signal measured by the first communication module and the first signal;

[0676] A fourth determining module is configured to determine the second path loss according to the first path loss and the path loss offset value.

[0677] In some embodiments, the second path loss includes a target modulation loss PL Mod , the target modulation loss PL Mod Including the modulation loss caused by the second communication module backscattering the signal.

[0678] The transmission power control device 1300 provided in the embodiment of the present application can implement each process in the first device side method embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0679] 14 , the embodiment of the present application further provides another transmission power control device 1400, which is applied to the fourth device. As shown in FIG14 , the transmission power control device 1400 includes:

[0680] The second execution module 1401 is configured to execute a second operation, where the second operation includes at least one of the following:

[0681] Sending first information to the first device;

[0682] sending second information to the first device;

[0683] Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power;

[0684] The first device includes a first communication module and a second communication module, the second communication module is an extremely low power consumption communication module, and the second information includes relevant information for determining the first information;

[0685] The first information includes at least one of the following:

[0686] a second target transmit power of the second communication module, where the second target transmit power is a target transmit power for sending the first signal by the second communication module;

[0687] a first power control offset value, where the first power control offset value is used to adjust the transmit power of the second communication module for the first signal to a second target transmit power;

[0688] a second power control offset value, where the second power control offset value is used to adjust the transmit power of the first communication module for the second signal to a first target transmit power;

[0689] The transmitting end of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module.

[0690] In some embodiments, the second information includes at least one of the following:

[0691] a third target transmit power and a first adjustment amount of the first communication module, wherein the second target transmit power is determined based on the third target transmit power and the first adjustment amount;

[0692] a first parameter and a second adjustment amount of the first communication module, wherein the second parameter is determined based on the first parameter and the second adjustment amount;

[0693] The second parameter;

[0694] The first parameter includes a parameter used to determine the third target transmit power; and the second parameter includes a parameter used to determine the second target transmit power.

[0695] In some embodiments, the second parameter includes at least one or a combination of at least two of the following parameters corresponding to the second communication module:

[0696] target received power, first path loss, second path loss, maximum transmit power, type of the first signal, time length of a symbol in the first signal, frequency domain width of a symbol in the first signal, offset value of closed-loop power control, number of RBs in the occupied bandwidth of the first signal, number of subcarriers contained in each RB of the first signal, average number of bits carried by each symbol in the first signal, partial path loss compensation factor;

[0697] The first path loss is the power loss of the transmission path of the first signal and the second signal obtained based on the reference signal measurement; the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

[0698] In some implementations, when the first information includes the second target transmit power, the transmit power control apparatus 1400 further includes:

[0699] a second receiving module, configured to receive first capability information from the first device, wherein the first capability information is related to power control of at least one of the first communication module and the second communication module;

[0700] The third sending module is configured to send at least one of the first power control offset value and the second power control offset value to the first device according to the first capability information and the second target transmit power.

[0701] In some implementations, when the first information includes the second target transmit power, the transmit power control apparatus 1400 further includes:

[0702] a third receiving module, configured to receive second capability information from a second device, where the second capability information is related to power control of the second device;

[0703] A fourth sending module is used to send a third power control bias value to the second device based on the second capability information and the second target transmission power; wherein the third power control bias value is used to adjust the transmission power of the second device to the second signal to the first target transmission power.

[0704] In some embodiments, the first capability information includes at least one of the following:

[0705] first indication information, where the first indication information is used to indicate whether the first communication module can perform power control;

[0706] the minimum transmit power of the first communication module;

[0707] the maximum transmit power of the first communication module;

[0708] an available power set of the first communication module;

[0709] second indication information, where the second indication information is used to indicate whether the second communication module can perform power control;

[0710] the maximum power attenuation capability of the second communication module;

[0711] the maximum power amplification capability of the second communication module;

[0712] a power attenuation value set of the second communication module;

[0713] A power amplification value set of the second communication module.

[0714] In some embodiments, the second capability information includes at least one of the following:

[0715] the minimum transmit power of the second device;

[0716] the maximum transmit power of the second device;

[0717] The available power set of the second device.

[0718] In some implementations, the transmit power control apparatus 1400 further includes:

[0719] a fourth receiving module, configured to receive third information from the first device;

[0720] A second determining module, configured to determine the second target transmit power according to the third information;

[0721] The third information includes at least one of the following:

[0722] the second target transmit power;

[0723] second parameters, the second parameters comprising parameters for determining the second target transmit power;

[0724] a fourth power control offset value, where the fourth power offset value is a power offset value between the second target transmit power and the current transmit power of the transmitter of the second signal;

[0725] A first transmission power, where the first transmission power is the transmission power obtained by subtracting a second path loss from the second target transmission power, and the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

[0726] The transmission power control device 1400 provided in the embodiment of the present application can implement each process in the fourth device side method embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0727] Optionally, as shown in Figure 15, an embodiment of the present application also provides a communication device 1500, including a processor 1501 and a memory 1502, and the memory 1502 stores programs or instructions that can be run on the processor 1501. For example: when the communication device 1500 acts as a first device, the program or instruction is executed by the processor 1501 to implement the various steps of the aforementioned first device side method embodiment and can achieve the same technical effect; when the communication device 1500 acts as a fourth device, the program or instruction is executed by the processor 1501 to implement the various steps of the aforementioned fourth device side method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0728] An embodiment of the present application also provides a communication device, including a processor and a communication interface.

[0729] In a case where the communication device is a first device, the processor is configured to obtain first information and perform a first operation according to the first information;

[0730] The first information includes at least one of the following:

[0731] a second target transmit power of the second communication module;

[0732] a first power control offset value;

[0733] a second power control offset value;

[0734] The first operation includes at least one of the following:

[0735] controlling the second communication module to transmit the first signal according to the second target transmit power;

[0736] Controlling the second communication module to apply the first power control offset value to adjust the transmit power of the first signal to a second target transmit power;

[0737] Controlling the first communication module to apply the second power control offset value to adjust the transmit power of the second signal to the first target transmit power;

[0738] Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power;

[0739] The first device includes a first communication module and a second communication module, the second communication module is an extremely low power consumption communication module, the transmitter of the second signal is the second device or the first communication module, and the first signal is generated based on the backscattering of the second signal by the second communication module.

[0740] When the communication device is a fourth device, the communication interface is used to perform a second operation, where the second operation includes at least one of the following:

[0741] Sending first information to the first device;

[0742] sending second information to the first device;

[0743] Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power;

[0744] The first device includes a first communication module and a second communication module, the second communication module is an extremely low power consumption communication module, and the second information includes relevant information for determining the first information;

[0745] The first information includes at least one of the following:

[0746] a second target transmit power of the second communication module, where the second target transmit power is a target transmit power for sending the first signal by the second communication module;

[0747] a first power control offset value, where the first power control offset value is used to adjust the transmit power of the second communication module for the first signal to a second target transmit power;

[0748] a second power control offset value, where the second power control offset value is used to adjust the transmit power of the first communication module for the second signal to a first target transmit power;

[0749] The transmitting end of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module.

[0750] This communication device embodiment corresponds to the aforementioned transmission power control method embodiments on the first device side and the fourth device side. The various implementation processes and implementation methods of the aforementioned method embodiments are applicable to this communication device embodiment and can achieve the same technical effects.

[0751] In some implementations, FIG16 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0752] The terminal 1600 includes but is not limited to: a radio frequency unit 1601, a network module 1602, an audio output unit 1603, an input unit 1604, a sensor 1605, a display unit 1606, a user input unit 1607, an interface unit 1608, a memory 1609 and at least some of the components of the processor 1610.

[0753] Those skilled in the art will appreciate that the terminal 1600 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 1610 via a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in FIG16 does not constitute a limitation of the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be described in detail here.

[0754] It should be understood that in an embodiment of the present application, the input unit 1604 may include a graphics processing unit (GPU) 16041 and a microphone 16042, and the graphics processor 16041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1606 may include a display panel 16061, and the display panel 16061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1607 includes a touch panel 16071 and at least one of other input devices 16072. The touch panel 16071 is also called a touch screen. The touch panel 16071 may include two parts: a touch detection device and a touch controller. Other input devices 16072 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.

[0755] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 1601 may transmit the data to the processor 1610 for processing. Furthermore, the RF unit 1601 may send uplink data to the network-side device. Typically, the RF unit 1601 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0756] Memory 1609 can be used to store software programs or instructions and various data. Memory 1609 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, memory 1609 may include volatile memory or non-volatile memory. 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. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 1609 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0757] Processor 1610 may include one or more processing units. Optionally, processor 1610 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1610.

[0758] Among them, the terminal 1600 serves as the first device.

[0759] Processor 1610 is configured to obtain first information, where the first device includes a first communication module and a second communication module, and the second communication module is an extremely low power consumption communication module;

[0760] The processor 1610 is further configured to perform a first operation according to the first information;

[0761] The first information includes at least one of the following:

[0762] a second target transmit power of the second communication module;

[0763] a first power control offset value;

[0764] a second power control offset value;

[0765] The first operation includes at least one of the following:

[0766] controlling the second communication module to transmit the first signal according to the second target transmit power;

[0767] Controlling the second communication module to apply the first power control offset value to adjust the transmit power of the first signal to a second target transmit power;

[0768] Controlling the first communication module to apply the second power control offset value to adjust the transmit power of the second signal to the first target transmit power;

[0769] Sending a third power control offset value to the second device through the radio frequency unit 1601, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power;

[0770] The transmitting end of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module.

[0771] In some implementations, the obtaining of the first information performed by the processor 1610 includes:

[0772] Acquire second information, and determine the first information based on the second information;

[0773] The second information includes at least one of the following:

[0774] a third target transmit power and a first adjustment amount of the first communication module, wherein the second target transmit power is determined based on the third target transmit power and the first adjustment amount;

[0775] a first parameter and a second adjustment amount of the first communication module, wherein the second parameter is determined based on the first parameter and the second adjustment amount;

[0776] The second parameter;

[0777] The first parameters include parameters used to determine the third target transmit power; the second parameters include parameters used to determine the second target transmit power.

[0778] In some embodiments, the second parameter includes at least one or a combination of at least two of the following parameters corresponding to the second communication module:

[0779] target received power, first path loss, second path loss, maximum transmit power, type of the first signal, time length of a symbol in the first signal, frequency domain width of a symbol in the first signal, offset value of closed-loop power control, number of RBs in the occupied bandwidth of the first signal, number of subcarriers contained in each RB of the first signal, average number of bits carried by each symbol in the first signal, partial path loss compensation factor;

[0780] The first path loss is the power loss of the transmission path of the first signal and the second signal obtained based on the reference signal measurement; the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

[0781] In some embodiments, when the first information includes the second target transmit power:

[0782] Processor 1610 is also used to determine at least one of the first power control bias value, the second power control bias value and the third power control bias value based on the second target transmit power and the first capability information, wherein the first capability information is related to the power control of at least one of the first communication module and the second communication module.

[0783] In some implementations, when the first information includes the second target transmit power, the radio frequency unit 1601 is further configured to:

[0784] Sending first capability information to a fourth device, wherein the first capability information is related to power control of at least one of the first communication module and the second communication module;

[0785] At least one of a first power control offset value and a second power control offset value is received from the fourth device.

[0786] In some implementations, before performing the receiving of at least one of the first power control offset value and the second power control offset value from the fourth device, the radio frequency unit 1601 is further configured to:

[0787] Sending third information to the fourth device, where the third information includes at least one of the following:

[0788] the second target transmit power;

[0789] second parameters, the second parameters comprising parameters for determining the second target transmit power;

[0790] a fourth power control offset value, where the fourth power offset value is an offset value between the second target transmit power and the current transmit power of the transmitter of the second signal;

[0791] A first transmission power, where the first transmission power is the transmission power obtained by subtracting a second path loss from the second target transmission power, and the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

[0792] In some embodiments, the first capability information includes at least one of the following:

[0793] first indication information, where the first indication information is used to indicate whether the first communication module can perform power control;

[0794] the minimum transmit power of the first communication module;

[0795] the maximum transmit power of the first communication module;

[0796] an available power set of the first communication module;

[0797] second indication information, where the second indication information is used to indicate whether the second communication module can perform power control;

[0798] the maximum power attenuation capability of the second communication module;

[0799] the maximum power amplification capability of the second communication module;

[0800] a power attenuation value set of the second communication module;

[0801] A power amplification value set of the second communication module.

[0802] In some embodiments, when the transmitting end of the second signal is the second device and the downlink of the first communication module provides the uplink radio frequency carrier of the second communication module, the radio frequency unit 1601 is further configured to:

[0803] Measuring a reference signal sent by a third device to obtain a third path loss, where the third device is a receiving end device of the first signal;

[0804] measuring a reference signal sent by the second device to obtain a fourth path loss;

[0805] The first path loss includes the third path loss and the fourth path loss.

[0806] In some embodiments, when the transmitting end of the first signal is the second device and the downlink of the first communication module provides the uplink radio frequency carrier of the second communication module, the radio frequency unit 1601 is further configured to:

[0807] Backscatter a reference signal sent by a third device, where the third device is a receiving device of the first signal;

[0808] receiving fourth information or first signaling from the third device;

[0809] The fourth information includes the first path loss, or the fourth information includes the first path loss and a partial path loss compensation factor; and the first signaling is used to indicate a bias value of closed-loop power control.

[0810] In some implementations, when the transmitting end of the first signal is the first communication module, the radio frequency unit 1601 is further configured to:

[0811] The first device measures the reference signal sent by the second device to obtain the first path loss.

[0812] In some implementations, when the sending end of the first signal is the first communication module:

[0813] The processor 1610 is further configured to control the first communication module to send a reference signal, and control the second communication module to backscatter the reference signal sent by the first communication module;

[0814] The radio frequency unit 1601 is further configured to receive fourth information or first signaling from a third device, where the third device is a receiving end device of the first signal;

[0815] The fourth information includes the first path loss, or the fourth information includes the first path loss and a partial path loss compensation factor; and the first signaling is used to indicate a bias value of closed-loop power control.

[0816] In some implementations, the first path loss is measured by the first communication module or the second communication module.

[0817] In some implementations, when the first path loss is measured by the first communication module, the processor 1610 is further configured to:

[0818] Determining a path loss offset value according to a difference between a reference signal measured by the first communication module and the first signal;

[0819] The second path loss is determined according to the first path loss and the path loss offset value.

[0820] In some embodiments, the second path loss includes a target modulation loss PL Mod , the target modulation loss PL Mod Including the modulation loss caused by the second communication module backscattering the signal.

[0821] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the aforementioned first device side method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0822] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the aforementioned first device-side or fourth device-side method embodiment. This network-side device embodiment corresponds to the aforementioned first device-side or fourth device-side method embodiment, and each implementation process and implementation method of the aforementioned method embodiment is applicable to this network-side device embodiment and can achieve the same technical effects.

[0823] In one embodiment, as shown in Figure 17 , the network-side device 1700 includes: an antenna 1701, a radio frequency device 1702, a baseband device 1703, a processor 1704, and a memory 1705. Antenna 1701 is connected to radio frequency device 1702. In the uplink direction, radio frequency device 1702 receives information via antenna 1701 and sends the received information to baseband device 1703 for processing. In the downlink direction, baseband device 1703 processes the information to be transmitted and sends it to radio frequency device 1702. Radio frequency device 1702 processes the received information and then sends it through antenna 1701.

[0824] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 1703 , which includes a baseband processor.

[0825] The baseband device 1703 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 17, one of which is, for example, a baseband processor, which is connected to the memory 1705 through a bus interface to call the program in the memory 1705 and execute the network device operations shown in the above method embodiment.

[0826] The network side device may further include a network interface 1706 , which is, for example, a Common Public Radio Interface (CPRI).

[0827] In some embodiments, the network side device 1700 of the embodiment of the present application also includes: instructions or programs stored in the memory 1705 and executable on the processor 1704. The processor 1704 calls the instructions or programs in the memory 1705 to execute the methods executed by the modules shown in FIG13 or FIG14 and achieve the same technical effect. To avoid repetition, they will not be described here.

[0828] In another embodiment, the present application also provides a network-side device. As shown in FIG18 , the network-side device 1800 includes a processor 1801, a network interface 1802, and a memory 1803. The network interface 1802 is, for example, a Common Public Radio Interface (CPRI).

[0829] Optionally, the network side device 1800 of the embodiment of the present application also includes: instructions or programs stored in the memory 1803 and executable on the processor 1801. The processor 1801 calls the instructions or programs in the memory 1803 to execute the methods executed by the modules shown in FIG14 and achieve the same technical effect. To avoid repetition, they will not be elaborated here.

[0830] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by the processor, the various processes of the aforementioned first device-side method embodiment or the fourth device-side method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0831] 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 (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0832] 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 aforementioned first device-side method embodiment or the fourth device-side method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0833] 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.

[0834] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the aforementioned first device-side method embodiment or the fourth device-side method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0835] An embodiment of the present application further provides a wireless communication system, including a first device and a fourth device, wherein the first device is used to execute the steps of the aforementioned first device side method embodiment, and the fourth device is used to execute the steps of the aforementioned fourth device side method embodiment, and can achieve the same technical effect. To avoid repetition, they will not be repeated here.

[0836] 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 comprising 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 a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out 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 the opposite 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.

[0837] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0838] 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 this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A transmission power control method, comprising: A first device acquires first information, the first device includes a first communication module and a second communication module, and the second communication module is an extremely low power consumption communication module; The first device performs a first operation according to the first information; The first information includes at least one of the following: a second target transmit power of the second communication module; a first power control bias value; a second power control bias value; The first operation includes at least one of the following: Controlling the second communication module to transmit a first signal according to the second target transmission power; Controlling the second communication module to apply the first power control bias value to adjust the transmit power of the first signal to a second target transmit power; Controlling the first communication module to apply the second power control bias value to adjust the transmit power of the second signal to the first target transmit power; Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power; The sending end of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module.

2. The method according to claim 1, wherein: The first device acquires first information, including: The first device acquires second information, and determines the first information according to the second information; The second information includes at least one of the following: a third target transmit power and a first adjustment amount of the first communication module, wherein the second target transmit power is determined based on the third target transmit power and the first adjustment amount; a first parameter and a second adjustment amount of the first communication module, wherein the second parameter is determined based on the first parameter and the second adjustment amount; The second parameter; The first parameters include parameters used to determine the third target transmit power; and the second parameters include parameters used to determine the second target transmit power.

3. The method according to claim 2, wherein: The second parameter includes at least one or a combination of at least two of the following parameters corresponding to the second communication module: target received power, first path loss, second path loss, maximum transmit power, type of the first signal, time length of a symbol in the first signal, frequency domain width of a symbol in the first signal, bias value of closed-loop power control, number of RBs of the occupied bandwidth of the first signal, number of subcarriers contained in each RB of the first signal, number of bits carried by each symbol in the first signal on average, partial path loss compensation factor; The first path loss is the power loss of the transmission path of the first signal and the second signal obtained based on the reference signal measurement; the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

4. The method according to any one of claims 1 to 3, wherein: In a case where the first information includes the second target transmit power, the method further includes: The first device determines at least one of the first power control bias value, the second power control bias value and the third power control bias value based on the second target transmission power and the first capability information, wherein the first capability information is related to the power control of at least one of the first communication module and the second communication module.

5. The method according to any one of claims 1 to 3, wherein: In a case where the first information includes the second target transmit power, the method further includes: The first device sends first capability information to a fourth device, wherein the first capability information is related to power control of at least one of the first communication module and the second communication module; The first device receives at least one of a first power control offset value and the second power control offset value from the fourth device.

6. The method according to claim 5, wherein: Before the first device receives at least one of the first power control offset value and the second power control offset value from the fourth device, the method further includes: The first device sends third information to the fourth device, where the third information includes at least one of the following: the second target transmit power; a second parameter, the second parameter comprising a parameter for determining the second target transmit power; a fourth power control offset value, wherein the fourth power offset value is an offset value between the second target transmit power and a current transmit power of the transmitter of the second signal; A first transmission power, where the first transmission power is the transmission power obtained by subtracting a second path loss from the second target transmission power, and the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

7. The method according to claim 4, 5 or 6, wherein: The first capability information includes at least one of the following: first indication information, where the first indication information is used to indicate whether the first communication module can perform power control; The minimum transmission power of the first communication module; The maximum transmission power of the first communication module; The available power set of the first communication module; second indication information, where the second indication information is used to indicate whether the second communication module can perform power control; The maximum power attenuation capability of the second communication module; The maximum power amplification capability of the second communication module; A power attenuation value set of the second communication module; A power amplification value set of the second communication module.

8. The method according to claim 3, wherein: In a case where the transmitting end of the second signal is the second device, and the downlink of the first communication module provides an uplink radio frequency carrier of the second communication module, the method further includes: The first device measures a reference signal sent by a third device to obtain a third path loss, where the third device is a receiving end device of the first signal; The first device measures a reference signal sent by the second device to obtain a fourth path loss; The first path loss includes the third path loss and the fourth path loss.

9. The method according to claim 3, wherein: In the case where the transmitting end of the first signal is the second device, and the downlink of the first communication module provides an uplink radio frequency carrier of the second communication module, the method further includes: The first device backscatters a reference signal sent by a third device, where the third device is a receiving end device of the first signal; The first device receives fourth information or first signaling from the third device; The fourth information includes the first path loss, or the fourth information includes the first path loss and a partial path loss compensation factor; and the first signaling is used to indicate a bias value of closed-loop power control.

10. The method according to claim 3, wherein: In a case where the sending end of the first signal is the first communication module, the method further includes: The first device measures a reference signal sent by the second device to obtain the first path loss.

11. The method according to claim 3, wherein: In a case where the sending end of the first signal is the first communication module, the method further includes: The first device controls the first communication module to send a reference signal; The first device controls the second communication module to backscatter the reference signal sent by the first communication module; The first device receives fourth information or first signaling from a third device, and the third device is a receiving end device of the first signal; The fourth information includes the first path loss, or the fourth information includes the first path loss and a partial path loss compensation factor; and the first signaling is used to indicate a bias value of closed-loop power control.

12. The method according to claim 8 or 10, wherein: The first path loss is measured by the first communication module or the second communication module.

13. The method according to claim 12, wherein: In a case where the first path loss is measured by the first communication module, the method further includes: The first device determines a path loss offset value according to a difference between a reference signal measured by the first communication module and the first signal; The first device determines the second path loss according to the first path loss and the path loss offset value.

14. The method according to any one of claims 3 to 13, wherein: The second path loss includes a target modulation loss PL Mod , the target modulation loss PL Mod Including the modulation loss caused by the second communication module backscattering the signal.

15. A transmission power control method, comprising: The fourth device performs a second operation, where the second operation includes at least one of the following: Sending first information to a first device; sending second information to the first device; Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power; The first device includes a first communication module and a second communication module, the second communication module is an extremely low power consumption communication module, and the second information includes relevant information for determining the first information; The first information includes at least one of the following: a second target transmit power of the second communication module, where the second target transmit power is a target transmit power of the second communication module for sending a first signal; a first power control offset value, where the first power control offset value is used to adjust the transmit power of the second communication module for the first signal to a second target transmit power; a second power control offset value, where the second power control offset value is used to adjust the transmit power of the first communication module for the second signal to a first target transmit power; The sending end of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module.

16. The method according to claim 15, wherein: The second information includes at least one of the following: a third target transmit power and a first adjustment amount of the first communication module, wherein the second target transmit power is determined based on the third target transmit power and the first adjustment amount; a first parameter and a second adjustment amount of the first communication module, wherein the second parameter is determined based on the first parameter and the second adjustment amount; The second parameter; The first parameter includes a parameter used to determine the third target transmit power; and the second parameter includes a parameter used to determine the second target transmit power.

17. The method according to claim 16, wherein: The second parameter includes at least one or a combination of at least two of the following parameters corresponding to the second communication module: target received power, first path loss, second path loss, maximum transmit power, type of the first signal, time length of a symbol in the first signal, frequency domain width of a symbol in the first signal, bias value of closed-loop power control, number of RBs of the occupied bandwidth of the first signal, number of subcarriers contained in each RB of the first signal, number of bits carried by each symbol in the first signal on average, partial path loss compensation factor; The first path loss is the power loss of the transmission path of the first signal and the second signal obtained based on the reference signal measurement; the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

18. The method according to any one of claims 15 to 17, wherein: In a case where the first information includes the second target transmit power, the method further includes: The fourth device receives first capability information from the first device, wherein the first capability information is related to power control of at least one of the first communication module and the second communication module; The fourth device sends at least one of the first power control offset value and the second power control offset value to the first device according to the first capability information and the second target transmit power.

19. The method according to claim 18, wherein: In a case where the first information includes the second target transmit power, the method further includes: The fourth device receives second capability information from the second device, where the second capability information is related to power control of the second device; The fourth device sends a third power control bias value to the second device according to the second capability information and the second target transmit power; wherein the third power control bias value is used to adjust the transmit power of the second device for the second signal to the first target transmit power.

20. The method according to claim 18, wherein: The first capability information includes at least one of the following: first indication information, where the first indication information is used to indicate whether the first communication module can perform power control; The minimum transmission power of the first communication module; The maximum transmission power of the first communication module; The available power set of the first communication module; second indication information, where the second indication information is used to indicate whether the second communication module can perform power control; The maximum power attenuation capability of the second communication module; The maximum power amplification capability of the second communication module; A power attenuation value set of the second communication module; A power amplification value set of the second communication module.

21. The method according to claim 19, wherein: The second capability information includes at least one of the following: a minimum transmit power of the second device; the maximum transmit power of the second device; The available power set of the second device.

22. The method according to claim 19, wherein: Before the fourth device sends a third power control offset value to the second device according to the second capability information and the second target transmit power, the method further includes: The fourth device receives third information from the first device; The fourth device determines the second target transmit power according to the third information; The third information includes at least one of the following: the second target transmit power; a second parameter, the second parameter comprising a parameter for determining the second target transmit power; a fourth power control offset value, wherein the fourth power offset value is a power offset value between the second target transmit power and a current transmit power of the transmitter of the second signal; A first transmission power, where the first transmission power is the transmission power obtained by subtracting a second path loss from the second target transmission power, and the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

23. A transmission power control device, applied to a first device, the device comprising: A first acquisition module, used to acquire first information, the first device includes a first communication module and a second communication module, and the second communication module is an extremely low power consumption communication module; A first execution module, configured to execute a first operation according to the first information; The first information includes at least one of the following: a second target transmit power of the second communication module; a first power control offset value; a second power control bias value; The first operation includes at least one of the following: Controlling the second communication module to transmit a first signal according to the second target transmission power; Controlling the second communication module to apply the first power control bias value to adjust the transmit power of the first signal to a second target transmit power; Controlling the first communication module to apply the second power control bias value to adjust the transmit power of the second signal to the first target transmit power; Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power; The sending end of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module.

24. The device according to claim 23, wherein: The first acquisition module is specifically used for: Acquire second information, and determine the first information according to the second information; The second information includes at least one of the following: a third target transmit power and a first adjustment amount of the first communication module, wherein the second target transmit power is determined based on the third target transmit power and the first adjustment amount; a first parameter and a second adjustment amount of the first communication module, wherein the second parameter is determined based on the first parameter and the second adjustment amount; The second parameter; The first parameters include parameters used to determine the third target transmit power; and the second parameters include parameters used to determine the second target transmit power.

25. The device according to claim 23 or 24, wherein: In a case where the first information includes the second target transmit power, the apparatus further includes: A first determination module is used to determine at least one of the first power control bias value, the second power control bias value and the third power control bias value according to the second target transmission power and first capability information, wherein the first capability information is related to the power control of at least one of the first communication module and the second communication module.

26. The device according to claim 23 or 24, wherein: In a case where the first information includes the second target transmit power, the apparatus further includes: A first sending module, configured to send first capability information to a fourth device, wherein the first capability information is related to power control of at least one of the first communication module and the second communication module; The first receiving module is used to receive at least one of the first power control offset value and the second power control offset value from the fourth device.

27. The apparatus according to claim 26, further comprising: The second sending module is configured to send third information to the fourth device, where the third information includes at least one of the following: the second target transmit power; a second parameter, the second parameter comprising a parameter for determining the second target transmit power; a fourth power control offset value, wherein the fourth power offset value is an offset value between the second target transmit power and a current transmit power of the transmitter of the second signal; A first transmission power, where the first transmission power is the transmission power obtained by subtracting a second path loss from the second target transmission power, and the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

28. A transmission power control device, applied to a fourth device, the device comprising: The second execution module is configured to execute a second operation, where the second operation includes at least one of the following: Sending first information to a first device; sending second information to the first device; Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmit power of the second signal of the second device to the first target transmit power; The first device includes a first communication module and a second communication module, the second communication module is an extremely low power consumption communication module, and the second information includes relevant information for determining the first information; The first information includes at least one of the following: a second target transmit power of the second communication module, where the second target transmit power is a target transmit power of the second communication module for sending a first signal; a first power control offset value, where the first power control offset value is used to adjust the transmit power of the second communication module for the first signal to a second target transmit power; a second power control offset value, where the second power control offset value is used to adjust the transmit power of the first communication module for the second signal to a first target transmit power; The sending end of the second signal is the second device or the first communication module, and the first signal is generated based on backscattering of the second signal by the second communication module.

29. The device according to claim 28, wherein The second information includes at least one of the following: a third target transmit power and a first adjustment amount of the first communication module, wherein the second target transmit power is determined based on the third target transmit power and the first adjustment amount; a first parameter and a second adjustment amount of the first communication module, wherein the second parameter is determined based on the first parameter and the second adjustment amount; The second parameter; The first parameter includes a parameter used to determine the third target transmit power; and the second parameter includes a parameter used to determine the second target transmit power.

30. The device according to claim 28 or 29, wherein: In a case where the first information includes the second target transmit power, the apparatus further includes: A second receiving module, configured to receive first capability information from the first device, wherein the first capability information is related to power control of at least one of the first communication module and the second communication module; The third sending module is used to send at least one of the first power control offset value and the second power control offset value to the first device according to the first capability information and the second target transmit power.

31. The device according to claim 30, wherein In a case where the first information includes the second target transmit power, the apparatus further includes: A third receiving module, configured to receive second capability information from a second device, where the second capability information is related to power control of the second device; A fourth sending module is used to send a third power control bias value to the second device according to the second capability information and the second target transmission power; wherein the third power control bias value is used to adjust the transmission power of the second device to the second signal to the first target transmission power.

32. The apparatus of claim 31 , further comprising: a fourth receiving module, configured to receive third information from the first device; A second determining module, configured to determine the second target transmit power according to the third information; The third information includes at least one of the following: the second target transmit power; a second parameter, the second parameter comprising a parameter for determining the second target transmit power; a fourth power control offset value, wherein the fourth power offset value is a power offset value between the second target transmit power and a current transmit power of the transmitter of the second signal; A first transmission power, where the first transmission power is the transmission power obtained by subtracting a second path loss from the second target transmission power, and the second path loss is the path loss that needs to be compensated for the first signal and the second signal during the power control process.

33. A communication device, comprising 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 transmission power control method as described in any one of claims 1 to 14 are implemented, or the steps of the transmission power control method as described in any one of claims 15 to 22 are implemented.

34. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the transmission power control method as described in any one of claims 1 to 14, or implements the steps of the transmission power control method as described in any one of claims 15 to 22.

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