Transmitting power control method and device and communication equipment

Abstract

The invention discloses a transmitting power control method and device and communication equipment, and belongs to the technical field of communication, and the method comprises the steps that first equipment obtains first information, the first equipment comprises 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 executes a first operation according to the first information; the first operation comprises at least one of the following items: controlling the second communication module to transmit a first signal according to second target transmitting power; controlling a second communication module to adjust the transmitting power of the first signal to a second target transmitting power by applying the first power control offset value; controlling the first communication module to adjust the transmitting power of the second signal to the first target transmitting power by applying the second power control offset value; sending a third power control offset value to the second device, so as to adjust the transmitting power of the second device to the second signal to the first target transmitting power; the first signal is generated by backscattering the second signal based on the second communication module.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a transmit power control method, apparatus, and communication device. Background Art

[0002] The power control method in the related art is designed based on multi-carrier signals such as Orthogonal Frequency Division Multiplexing (OFDM) or Discrete Fourier Transform-Spread OFDM (DFT-S-OFDM), and under the assumption of a topology structure where a User Equipment (UE) is directly connected to a base station or an Integrated Access and Backhaul (IAB) node.

[0003] 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). Moreover, the connection topology in BSC is not limited to a simple directly connected topology. In addition, some devices have both a traditional main communication module and an extremely low-power communication module of the AIoT type.

[0004] 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 communication module. At this time, due to the lack of power control for a communication device that has both a main communication module and an extremely low-power communication module, the communication performance of this communication device will be restricted. Summary of the Invention

[0005] Embodiments of this application provide a transmit power control method, apparatus, and communication device, which can perform power control on a first signal transmitted by a low-power communication module in a communication device that has both a main communication module and an extremely low-power communication module, thereby improving the communication performance of this communication device.

[0006] In a first aspect, a transmit power control method is provided. The method includes:

[0007] A first device obtains 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 communication module;

[0008] The first device performs a first operation according to the first information;

[0009] Wherein, the first information includes at least one of the following:

[0010] The second target transmission power of the second communication module;

[0011] The first power control bias value;

[0012] The second power control bias value;

[0013] The first operation includes at least one of the following:

[0014] Control the second communication module to transmit a first signal according to the second target transmission power;

[0015] Control the second communication module to apply the first power control bias value to adjust the transmission power of the first signal to the second target transmission power;

[0016] Control the first communication module to apply the second power control bias value to adjust the transmission power of the second signal to the first target transmission power;

[0017] Send a third power control bias value to the second device, where the third power control bias value is used to adjust the transmission power of the second signal of the second device to the first target transmission power;

[0018] Wherein, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by backscattering the second signal by the second communication module.

[0019] In a second aspect, a transmission power control device is provided, which is applied to a first device. The device includes:

[0020] A first acquisition module, configured to acquire first information, where the first device includes a first communication module and a second communication module, and the second communication module is a very low power consumption communication module;

[0021] A first execution module, configured to perform a first operation according to the first information;

[0022] Wherein, the first information includes at least one of the following:

[0023] The second target transmission power of the second communication module;

[0024] The first power control bias value;

[0025] The second power control bias value;

[0026] The first operation includes at least one of the following:

[0027] Controlling the second communication module to transmit a first signal at the second target transmission power;

[0028] Controlling the second communication module to adjust the transmission power of the first signal to the second target transmission power by applying the first power control bias value;

[0029] Controlling the first communication module to adjust the transmission power of the second signal to the first target transmission power by applying the second power control bias value;

[0030] Sending a third power control bias value to a second device, the third power control bias value being used to adjust the transmission power of the second signal by the second device to the first target transmission power;

[0031] Wherein, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by backscattering the second signal by the second communication module.

[0032] In a third aspect, a transmission power control method is provided, the method includes:

[0033] A fourth device performs a second operation, the second operation includes at least one of the following:

[0034] Sending first information to a first device;

[0035] Sending second information to the first device;

[0036] Sending a third power control bias value to a second device, the third power control bias value being used to adjust the transmission power of the second signal by the second device to the first target transmission power;

[0037] Wherein, the first device includes a first communication module and a second communication module, the second communication module is a very low power consumption communication module, and the second information includes relevant information for determining the first information;

[0038] The first information includes at least one of the following:

[0039] The second target transmission power of the second communication module, the second target transmission power being the target transmission power for the second communication module to send the first signal;

[0040] A first power control bias value, the first power control bias value being used to adjust the transmission power of the first signal by the second communication module to the second target transmission power;

[0041] A second power control offset value, which is used to adjust the transmission power of the first communication module for the second signal to a first target transmission power;

[0042] Wherein, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by backscattering the second signal based on the second communication module.

[0043] In a fourth aspect, a transmission power control device is provided, which is applied to a fourth device. The device includes:

[0044] A second execution module, which is used to execute a second operation. The second operation includes at least one of the following:

[0045] Sending first information to a first device;

[0046] Sending second information to the first device;

[0047] Sending a third power control offset value to the second device, where the third power control offset value is used to adjust the transmission power of the second device for the second signal to a first target transmission power;

[0048] Wherein, the first device includes a first communication module and a second communication module. The second communication module is a very low power consumption communication module, and the second information includes relevant information for determining the first information;

[0049] The first information includes at least one of the following:

[0050] The second target transmission power of the second communication module, where the second target transmission power is the target transmission power for the second communication module to send a first signal;

[0051] A first power control offset value, which is used to adjust the transmission power of the second communication module for the first signal to a second target transmission power;

[0052] A second power control offset value, which is used to adjust the transmission power of the first communication module for the second signal to a first target transmission power;

[0053] Wherein, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by backscattering the second signal based on the second communication module.

[0054] In a fifth aspect, a communication device is provided. The communication device includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect or the third aspect are implemented.

[0055] In a sixth aspect, a communication device is provided, including a processor and a communication interface;

[0056] 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;

[0057] Wherein, the first information includes at least one of the following:

[0058] The second target transmission power of the second communication module;

[0059] The first power control offset value;

[0060] The second power control offset value;

[0061] The first operation includes at least one of the following:

[0062] Control the second communication module to transmit a first signal according to the second target transmission power;

[0063] Control the second communication module to adjust the transmission power of the first signal to the second target transmission power by applying the first power control offset value;

[0064] Control the first communication module to adjust the transmission power of the second signal to the first target transmission power by applying the second power control offset value;

[0065] Send a third power control offset value to a second device, where the third power control offset value is used to adjust the transmission power of the second signal of the second device to the first target transmission power;

[0066] Wherein, the first device includes a first communication module and a second communication module, the second communication module is a very low power consumption communication module, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by backscattering the second signal by the second communication module;

[0067] Or,

[0068] When the communication device is a fourth device, the communication interface is configured to perform a second operation, and the second operation includes at least one of the following:

[0069] Send the first information to the first device;

[0070] Send the second information to the first device;

[0071] Send a third power control offset value to a second device, where the third power control offset value is used to adjust the transmission power of the second signal by the second device to a first target transmission power;

[0072] Wherein, the first device includes a first communication module and a second communication module, the second communication module is a very low power consumption communication module, and the second information includes relevant information for determining the first information;

[0073] The first information includes at least one of the following:

[0074] A second target transmission power of the second communication module, where the second target transmission power is the target transmission power for the second communication module to send a first signal;

[0075] A first power control offset value, where the first power control offset value is used to adjust the transmission power of the first signal by the second communication module to a second target transmission power;

[0076] A second power control offset value, where the second power control offset value is used to adjust the transmission power of the second signal by the first communication module to a first target transmission power;

[0077] Wherein, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by backscattering the second signal by the second communication module.

[0078] In a seventh aspect, a wireless communication system is provided, including 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.

[0079] In an eighth aspect, a readable storage medium is provided. A program or instruction is stored on the readable storage medium, and 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.

[0080] In a ninth aspect, a chip is provided. The chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect or the third aspect.

[0081] In a tenth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement the steps of the method described in the first aspect or the third aspect.

[0082] In the embodiments of the present application, for a first device that has both a main communication module (i.e., the first communication module) and a very low-power communication module (i.e., the second communication module), it can use the very low-power 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 very low-power communication module based on the first information, making the second target transmission power of the first signal sent based on the very low-power communication module on the first device more flexible and improving the communication performance of the very low-power communication module. Description of the Drawings

[0083] Figure 1 is a schematic structural diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0084] Figure 2 is a schematic diagram of a backscatter communication system;

[0085] Figure 3 is a schematic diagram of signal modulation in a backscatter communication system;

[0086] Figure 4 is a schematic diagram of a generation framework of a multi-carrier OOK signal based on an OFDM architecture;

[0087] Figure 5 is a schematic diagram of offset-Quadrature Phase Shift Keying (O-QPSK) transmission and spreading sequences;

[0088] Figure 6 is a schematic diagram of Differential Binary Phase Shift Keying (DBPSK) modulation and spreading sequences;

[0089] Figure 7 is a block diagram of Minimum Shift Keying (MSK) modulation;

[0090] Figure 8 is a schematic diagram of the principle of Gaussian Filtered Minimum Shift Keying (GMSK) signal modulation;

[0091] Figure 9a is a schematic diagram of connection topology 1 of an AIoT device;

[0092] Figure 9b is a schematic diagram of connection topology 2 of an AIoT device;

[0093] Figure 9c It is one of the schematic diagrams of the connection topology 3 of an AIoT device;

[0094] Figure 9d It is the second of the schematic diagrams of the connection topology 3 of an AIoT device;

[0095] Figure 9e It is the schematic diagram of the connection topology 4 of an AIoT device;

[0096] Figure 10 It is the schematic diagram of information interaction between a terminal with a main communication module and an ultra-low power consumption communication module and a network-side device;

[0097] Figure 11 It is one of the flowcharts of a transmit power control method provided by an embodiment of the present application;

[0098] Figure 12 It is the second of the flowcharts of a transmit power control method provided by an embodiment of the present application;

[0099] Figure 13 It is one of the structural schematic diagrams of a transmit power control device provided by an embodiment of the present application;

[0100] Figure 14 It is the second of the structural schematic diagrams of a transmit power control device provided by an embodiment of the present application;

[0101] Figure 15 It is the structural schematic diagram of a communication device provided by an embodiment of the present application;

[0102] Figure 16 It is the structural schematic diagram of a terminal provided by an embodiment of the present application;

[0103] Figure 17 It is the structural schematic diagram of a network-side device provided by an embodiment of the present application;

[0104] Figure 18 It is the structural schematic diagram of another network-side device provided by an embodiment of the present application. Detailed implementation manners

[0105] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, rather than all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application belong to the scope of protection of the present application.

[0106] The terms "first", "second", etc. in this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of this 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 means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0107] The term "indicate" in this application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly informs the recipient of specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the recipient determines the corresponding information based on the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0108] It should be noted that the technology described in the embodiments of this application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, and 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 this application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and uses the NR term in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6 th Generation, 6G) communication system.

[0109] Figure 1Block diagram of a wireless communication system to which embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a 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, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, TVs, washing machines, or furniture, etc.), a game console, a personal computer (PC), a teller machine, or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, vehicle user equipment can also be referred to as vehicle terminals, vehicle controllers, vehicle modules, vehicle components, vehicle chips, or vehicle units, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be referred to as a radio access network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP), or a wireless fidelity (WiFi) node, etc.Among them, the base station may 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, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0110] The core network device may include, but is not limited to, at least one of the following: core network nodes, core network functions, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), Binding Support Function (BSF), Application Function (AF), etc. It should be noted that in the embodiments of this application, only the core network devices in the NR system are taken as examples for introduction, and the specific types of core network devices are not limited. It should be noted that in the embodiments of this application, only the core network devices in the NR system are taken as examples for introduction, and the specific types of core network devices are not limited.

[0111] To facilitate the understanding of the transmit power control method provided in the embodiments of this application, the following related technologies will be explained first:

[0112] I. Backscatter Communication (BSC)

[0113] Backscatter communication refers to the backscatter communication device using radio frequency signals in other devices or the environment for signal modulation to transmit its own information.

[0114] In some embodiments, the backscatter communication device may include at least one of the following:

[0115] Device A, which refers to the backscatter communication device in traditional Radio Frequency Identification (RFID), generally a tag, belonging to Passive-IoT devices;

[0116] Device B, which refers to semi-passive IoT devices. Such devices have a certain amplification ability for downlink reception or uplink reflection;

[0117] Device C, which refers to a device with active transmission ability (active device). Such IoT devices can send signals to a reader without relying on the reflection of the incident signal.

[0118] The energy source of the above backscatter communication devices can come from the environment, such as ambient Radio Frequency (RF) signals, thermal energy, kinetic energy, wind energy, etc., and can also be called Ambient IoT devices.

[0119] In some embodiments, as Figure 2 shown, a simple implementation of backscatter communication is as follows: when the tag needs to send '1', the tag reflects the incident carrier signal; when the tag needs to send '0', it does not reflect.

[0120] In some embodiments, as Figure 3 shown, the backscatter communication device controls the reflection coefficient Γ of the circuit by adjusting its internal impedance, thereby changing the amplitude, frequency, phase, etc. of the incident signal to achieve signal modulation. Among them, the reflection coefficient Γ of the signal can be calculated by the following formula:

[0121] Γ=(Z_1 - Z_0) / (Z_1 + Z_0)=|Γ|e^(jθ_T)

[0122] 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, corresponding amplitude modulation, frequency modulation, or phase modulation can be achieved by reasonably controlling the reflection coefficient.

[0123] II. Modulation Methods That Low-Power Signals May Use

[0124] 1) OOK

[0125] For the OOK modulation method, there are two generation methods. One is the multi-carrier (MultiCarrier OOK, MC-OOK) signal based on the OFDM architecture, and the other is the single-carrier OOK signal.

[0126] For the multi-carrier OOK signal based on the OFDM architecture, its design idea is not to change the transmitting end architecture of the existing base station. Therefore, appropriate data is sent on the OFDM subcarriers to make it present a square wave signal in the time domain, and its generation framework is as Figure 4 shown.

[0127] For the single-carrier OOK signal, it controls the turning on and off of the incident carrier or continuous wave (CW) with a unipolar non-return-to-zero code sequence. Its modulation method is simple and suitable for low-power signals.

[0128] 2) O-QPSK or DBPSK

[0129] For the active tag, offset quadrature phase shift keying (O-QPSK) or differential binary phase shift keying (DBPSK) modulation can be used to send data. These two modulation methods belong to the constant envelope modulation technology, and the introductions of these two modulation methods are as follows:

[0130] The modulation process of O-QPSK can be described as follows: The serially input binary data bit stream is divided into two different paths for transmission, namely the I path and the Q path. Among them, "I" is the component that is "in-phase" with the data waveform, and "Q" is the part that is "orthogonal" to the data waveform. That is, the even bits of the original input data are assigned to the I path, and the odd bits are assigned to the Q path, and it is ensured that the bit streams of the in-phase and orthogonal branches are staggered by half a symbol period in time. Then, the data on the I path and the Q path are used to modulate the carrier respectively, that is, one of the 4 discrete phase changes is used to represent a symbol (a pair of bits) to be transmitted.

[0131] BPSK is similar to QPSK, both using phase to carry symbol information. For example, when the input symbol is "1", the output of the baseband modulator is 1 (phase 0 degrees); when the input symbol is "0", the output of the baseband modulator is -1 (phase 180 degrees). However, BPSK has a phase ambiguity problem. The so-called phase ambiguity means that the recovered digital information will change from "0" to "1" or from "1" to "0", resulting in an incorrect recovery. This phenomenon of incorrect recovery in the receiving system due to the inversion of the local reference carrier is called the "phase ambiguity" phenomenon. To solve this problem, differential coding is introduced, so that the decoding at the receiving end is judged according to the change of the phase, rather than according to the absolute value of the phase. This is DBPSK.

[0132] It is worth noting that in order to obtain better link performance and anti-interference performance, the original bit information is extended by means of extended sequences and / or coding, etc. Common processing methods include, for example, Figure 5 the O-QPSK transmission and extended sequence shown in Figure 6 and the DBPSK modulation and extended sequence shown in

[0133] 3) MSK and GMSK Modulation

[0134] Minimum Shift Keying (MSK) is a constant envelope continuous phase modulation, and its modulation method is developed from binary Frequency Shift Keying (FSK) modulation. In FSK, the carrier frequency changes randomly with the modulation signal, and the modulation 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, and its modulation index is 0.5. The MSK modulation principle can be expressed by the following formula:

[0135]

[0136] Let where θ k is called the additional phase function to ensure the phase continuity between different symbols, ω c t is the carrier angular frequency, T s is the symbol width; a k is the phase constant of the k-th symbol. The modulation block diagram of MSK is as shown in Figure 7 shown.

[0137] Since the phase path of MSK is a curve, and it is observed from the spectrum analyzer that the side lobes of its power spectrum deviate from the center frequency and the attenuation is slow. Therefore, a Gaussian filter is added before MSK modulation to make up for the shortcomings of MSK, so as to achieve the purpose of improving the attenuation performance. Therefore, this modulator is called Gaussian Minimum Shift Keying (GMSK). As can be seen from the GMSK signal modulation principle diagram shown in Figure 8 , GMSK modulation is to add a Gaussian low-pass filter before the MSK modulator, so that the signal is smoother and the side lobe attenuation performance of the power spectrum is significantly improved. After MSK modulation, symbol data, that is, the I channel and the Q channel, come out, and finally the GMSK expression is as follows:

[0138]

[0139] Among them, A represents the signal envelope, ω c represents the carrier angular frequency, and φ represents the information phase.

[0140] III. Classification and Characteristics of AIoT Devices in 3GPP

[0141] In the AIoT research of 3GPP R19, ambient IoT devices are characterized based on their energy storage capacity and the ability to generate radio frequency signals for transmission. The AIoT device has one of the following energy storage capabilities:

[0142] Storage Capacity 1: No ability to store energy;

[0143] Storage Capacity 2: Energy can be stored up to E1 or E2 joules, where it is possible that E1 = E2;

[0144] Storage Capacity 3: Energy can be stored up to E2 joules.

[0145] Relying on these storage capacities, the following set of ambient IoT devices is considered in this research:

[0146] Device A: No energy storage, no independent signal generation / amplification, i.e., backscatter transmission;

[0147] Device B: Has energy storage, no independent signal generation, i.e., backscatter transmission. The use of stored energy can include amplification of the reflected signal;

[0148] Device C: Has energy storage, has independent signal generation, i.e., active radio frequency components for transmission.

[0149] IV. Connection Topologies and Deployment Scenarios of AIoT Devices

[0150] 1) As Figure 9a shown, in the connection topology 1 of AIoT devices, the AIoT device and the Base Station (BS) establish a two-way direct connection.

[0151] 2) As Figure 9b shown, in the connection topology 2 of AIoT devices, the AIoT device and an intermediate node establish a two-way connection. The intermediate node can be a relay node, an IAB node, a User Equipment (UE), a repeater, etc. The intermediate node transmits the data and / or signaling of the AIoT device to the base station, or the intermediate node transmits the data and / or signaling of the base station to the AIoT device.

[0152] 3) As Figure 9c and Figure 9dAs shown, in connection topology 3 of the AIoT device, 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. Among them, the auxiliary node can be a relay, IAB node, UE, repeater, etc.

[0153] 4) As Figure 9e shown, in connection topology 4 of the AIoT device, the AIoT device and the UE establish a two-way direct connection.

[0154] It should be noted that the ultra-low power communication module in the embodiments of the present application is similar to the above-mentioned AIoT device. The difference is that the communication device equipped with this ultra-low power communication module also has a main communication module at the same time. For the convenience of description, the AIoT device mentioned in the following embodiments of the present application refers to the ultra-low power communication module.

[0155] V. Power Control of NR

[0156] The NR protocol defines the power control of the uplink channel or signal (for example: Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), Sounding Reference Signal (SRS), and Physical Random Access Channel (PRACH)).

[0157] 1) Power control of PUSCH:

[0158] If the UE configures the parameter set with index j and the PUSCH power control process with index l, and sends PUSCH on the active uplink (UL) bandwidth part (BWP) b of the carrier f in serving cell c, then the UE will set the PUSCH transmission power P PUSCH,b,f,c (i, j, q d , l) as:

[0159]

[0160] Among them, the parameter j is used to represent the parameter configuration index of open-loop power control (for example, j = 0 represents the PUSCH in RACH, j = 1 represents the PUSCH related to Configured Grant, and j >= 2 represents the PUSCH of dynamic grant), and the parameter l is used to represent the process index of closed-loop power control, q d represents the reference signal index. P CMAX,f,c (i) is the maximum transmission 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 15 kHz subcarrier spacing (SCS)) of the open-loop control configuration index j, which is defined for the BWP, carrier, and cell; PL b,f,c (q d ) is the downlink path loss estimated by the UE using the reference signal q d , which is defined for the 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 the BWP, carrier, and cell; Δ TF,b,f,c (i) defines the transmission power required for each RE of the UE at time i, which is defined for the BWP, carrier, and cell. It is only used for single-layer transmission and is 0 in multi-layer transmission; is the number of RBs of the PUSCH at time i. Combining with the SCS determines the total bandwidth of the PUSCH, which is defined for the BWP, carrier, and cell; f b,f,c (i, l) is the bias 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 past times, that is, where δ PUDCH,b,f,c (m, l) is the mth TPC command indicated power adjustment value of the lth closed-loop power control process, all of which are defined for the BWP, carrier, and cell.

[0161] 2) Power control for PUCCH:

[0162] If the UE uses the PUCCH power control process with index l and transmits the PUCCH on the active UL BWP b of the carrier f in the primary cell c, then the UE determines the PUCCH transmission power P PUCCH,b,f,c (i, q u , q d , l) as:

[0163]

[0164] where q u is the index of PUCCH (the UE may need to transmit multiple PUCCHs simultaneously).

[0165] It should be noted that the power control of the above PUCCH and the power control of PUSCH include the following differences:

[0166] i) There is no partial path loss compensation factor;

[0167] ii) P o_PUCCH,b,f,c (q u ) is the target received power of the q n th PUCCH, which is defined for the BWP, carrier, and cell;

[0168] iii) Δ F_PUCCH (F) represents the power control offset that needs to be introduced for different PUCCH formats (F). For example, if the power control offset for different PUCCH formats is introduced, then Δ F_PUCCH (F0) corresponds to PUCCH format 0, Δ F_PUCCH (F1) corresponds to PUCCH format 1, Δ G_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.

[0169] iv) g b,f,c (i, l) is the bias value introduced by the closed-loop power control process / at time i, which is the sum of the power adjustment values indicated by the TPC commands at past times.

[0170] 3) Power control for SRS:

[0171] If the UE uses the SRS power control process with index l and transmits SRS based on the configuration of the SRS resource set on the active UL BWP b of the carrier f in the serving cell c, then the UE determines the SRS transmission power P SRS,b,f,c (i, q s , l) in the SRS transmission timing i as:

[0172]

[0173] where PL b，f，c (q d ) represents the estimated downlink path loss based on the reference signal q d .

[0174] It should be noted that the power control of the above SRS and the power control of the PUSCH include the following differences:

[0175] i) P O_SRS,b，f，c (q s ) is the SRS target received power of the q-th SRS resource set, which is defined for the BWP, carrier, and cell; s is defined for the BWP, carrier, and cell;

[0176] ii) M SRS,b，f，c (i) is the number of RBs of the SRS at time i. Combining with the SCS determines the total bandwidth of the SRS, which is defined for the BWP, carrier, and cell;

[0177] iii) α SRS,b,f，c (q s ) is the partial path loss compensation factor of the SRS resource set q, which is defined for the BWP, carrier, and cell; s is defined for the BWP, carrier, and cell;

[0178] iv) h b，f，c (i, l) is the bias value introduced by the closed-loop power control process l at time i, which can be the same as the power control bias value of the PUSCH, or (when there is no PUSCH transmission) is the sum of the power adjustment values indicated by the TPC commands at past times.

[0179] 4) Power control for the PRACH:

[0180] The UE determines the transmission power P of the physical random access channel (PRACH) on the active UL BWP b of the carrier f of cell c based on the downlink (DL) reference signal (RS) of cell c in the transmission occasion i. PRACH,b，f，c is defined as:

[0181] P PRACH,b,f,c (i) = min{P CMAX,f,c (i), P PRACH,target,f,c + PL b,f,c}

[0182] It should be noted that the power control of the above PRACH and the power control of the PUSCH include the following differences:

[0183] i) P PRACH,target,f,c is the target received power of the PRACH, which is given by the parameter: PREAMBLE_RECEIVED_TARGET_POWER, and is defined for the BWP, carrier, and cell;

[0184] ii) PL b，f，cIt is the downlink path loss estimated by the UE using a uniquely associated reference signal (referenceSignalPower - higher layer filtered RSRP in dBm), and is defined for a BWP, carrier, and cell.

[0185] As can be seen from the above, 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 the direct connection topology between the UE - gNB / IAB. However, the very - low - power communication module may use single - carrier signals such as OOK / ASK / FSK, and the connection topology is not limited to the simple direct - connection topology. For example, it may be the split architecture of Topology 3, and the main communication module located on the same first device as the very - low - power communication module may also provide an excitation source signal for the very - low - power communication module. Therefore, the transmit power control method in the related technology is not applicable to the power control of a communication device that has both a main communication module and a very - low - power communication module.

[0186] For example, the power control of PUSCH, PUCCH, and SRS needs to consider the signal format, that is, the bandwidth occupied by the signal (the number of RBs and SCS), and the number of bits (Bits PerRE) that each resource element (RE) needs to carry. And the occupied bandwidth is calculated based on the assumption of OFDM signals. However, the very - low - power communication module may need to use new signals, and 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 transmit power. The power calculation formula of NR in the related technology is calculated based on an OFDM signal with a certain sub - carrier spacing (such as 15 kHz), and it cannot be directly used for the power calculation of single - carrier signals. Therefore, there is a lack of a transmit power control method for a communication device that has both a main communication module and a very - low - power communication module in the related technology.

[0187] Among them, the definition of single - carrier modulation is: a modulation technique that uses only one carrier within a fixed frequency band. For single - carrier modulation, a symbol can carry at most 2 orthogonal signals (divided into I and Q channels). When the symbol rate and transmission pulse are fixed, the bandwidth occupied by the single - carrier signal is also fixed. For example, assume 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 is the time width of 1 pulse and also the time length of 1 modulation symbol.

[0188] VI. Non-IoT Devices Integrated with Ultra-Low Power Communication Modules

[0189] Ultra-low power communication modules are generally used alone in terminals with high requirements for power consumption, complexity, and battery life, such as IoT terminals. An extended application scenario is to apply ultra-low power communication modules to non-IoT devices such as mobile phones, including terminals and network-side devices. In this way, the device is equipped with both a main communication module and an ultra-low power communication module. Among them, the main communication module has high rate and spectral efficiency, but also high power consumption. If it is turned on for a long time, it will reduce the battery life of the device and is suitable for transmitting a large amount of data in a short time. On the contrary, the ultra-low power communication module has relatively low rate and spectral efficiency, but very low power consumption, and is suitable for transmitting a small amount of data for a long time, or for listening to control plane signaling to avoid or reduce the additional delay caused by discontinuous reception (DRX). Figure 10 Shows a schematic diagram of information interaction between a terminal and a network-side device equipped with a main communication module and an ultra-low power communication module. The two devices interact the first information and the second information through the ultra-low power communication module, and then perform information interaction with the main communication module within the device, such as waking up the main communication module by the ultra-low power communication module for further operations, etc.

[0190] In the embodiments of the present application, based on the transmitted signal and topological structure characteristics of non-IoT devices integrated with ultra-low power communication modules, a method for controlling the transmit power of the ultra-low power communication module and a configuration method for power control of the ultra-low power communication module and the main communication module are provided.

[0191] For the convenience of description, the following terms in the embodiments of the present application are first explained:

[0192] 1) The first communication module, that is, the main communication module, which is also called MR. The main communication module usually refers to a module that supports traditional communication methods (such as 4G, 5G, etc.), for example, a module that supports OFDM communication (including uplink and / or downlink).

[0193] 2) The second communication module, that is, the ultra-low power communication module, which is also called LR. The ultra-low power communication module is a communication module that supports sending signals in a backscatter manner (such as Device A or Device B in AIoT).

[0194] Optionally, the ultra-low power communication module can also support energy harvesting (harvesting energy from light, solar energy, wireless signals, etc.).

[0195] It should be noted that for the method of sending signals by backscatter, the excitation source signal can be generated by the terminal itself with a very low-power communication module or by other devices. 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 other devices (such as the third device).

[0196] It is worth noting that the power consumption of the very low-power communication module is significantly lower than that of the main communication module. For example, the power consumption of the very low-power communication module is generally from dozens of microwatts to hundreds of microwatts, while the power consumption of the main communication module is generally from dozens of milliwatts to thousands of milliwatts; the cost of the very low-power communication module is also significantly lower than the cost of the main communication module.

[0197] Next, in conjunction with the accompanying drawings, through some embodiments and their application scenarios, the transmission power control method, transmission power control device and related equipment provided by the embodiments of the present application will be described in detail.

[0198] Refer to Figure 11 , a transmission power control method provided by an embodiment of the present application, the execution subject of which is the first device, such as Figure 11 shown, the transmission power control method includes the following steps:

[0199] Step 111, the first device obtains first information, the first device includes a first communication module and a second communication module, and the second communication module is a very low-power communication module.

[0200] Step 112, the first device performs a first operation according to the first information.

[0201] Wherein, the first information includes at least one of the following:

[0202] The second target transmission power of the second communication module;

[0203] The first power control bias value;

[0204] The second power control bias value;

[0205] The first operation includes at least one of the following:

[0206] Control the second communication module to transmit the first signal according to the second target transmission power;

[0207] Control the second communication module to adjust the transmission power of the first signal to the second target transmission power by applying the first power control bias value;

[0208] Control the first communication module to adjust the transmission power of the second signal to the first target transmission power by applying the second power control bias value;

[0209] Send a third power control offset value to a second device, where the third power control offset value is used to adjust the transmission power of the second device for a second signal to a first target transmission power;

[0210] Wherein, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by backscattering the second signal based on the second communication module.

[0211] It should be noted that the first device in the embodiments of the present application is a communication device equipped with a main communication module (i.e., the first communication module) and an ultra-low power consumption communication module (i.e., the second communication module), and the second communication module sends the first signal in a backscattering manner.

[0212] Optionally, the first device may be a network-side device or a terminal device. For the sake of convenience of description, in the embodiments of the present application, the first device is usually taken as an example of a terminal for illustration.

[0213] In some embodiments, the excitation source (i.e., the second signal) obtained when the second communication module performs backscattering may come from the second device or the first communication module.

[0214] In one embodiment, the second device sends a second signal, and this second signal serves as the excitation source for the second communication module to perform backscattering, so as to enable the second communication module to generate and send a first signal.

[0215] In another embodiment, the first communication module sends a second signal, and this second signal serves as the excitation source for the second communication module to perform backscattering, so as to enable the second communication module to generate and send a first signal. In other words, in this embodiment, the uplink of the MR provides the uplink radio frequency carrier of the LR.

[0216] In still another embodiment, the second device sends 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 sends a first signal based on backscattering. In other words, in this embodiment, the downlink of the MR provides the uplink radio frequency carrier of the LR.

[0217] In the embodiments of the present application, the receiving end of the first signal is named as a third device, and this third device may be located in the same physical entity as the second device or in different physical entities. For the sake of convenience of description, in the embodiments of the present application, it is usually taken as an example that the second device sends a second signal, this second signal is backscattered by the first device to generate and transmit a first signal, and this first signal is received by the third device for illustration, that is, 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.

[0218] In some embodiments, the above-mentioned third device may be Figure 9a the base station in Figure 9b the relay node in Figure 9c the amplitude node in Figure 9d the base station in, and Figure 9e the UE in. The above-mentioned fourth device may be Figure 9a the base station in Figure 9b the relay node in Figure 9c the base station in Figure 9d the auxiliary node in, and Figure 9e the UE in.

[0219] It is worth noting that in some embodiments, the transmission power of the LR for the first signal can be adjusted based on power attenuation or power method processing. In addition, the transmission power of the LR for the first signal is also affected by the transmission power of the excitation source signal (i.e., the second signal). For example: when the LR does not support power adjustment, the greater the transmission power of the second signal, the greater the transmission power of the first signal generated by the LR based on backscattering.

[0220] In summary, the power adjustment of the first signal transmitted by the LR can be achieved by at least one of the following methods:

[0221] 1) Directly adjust the transmission power of the LR for the first signal;

[0222] 2) Adjust the transmission power of the second device for the second signal;

[0223] 3) Adjust the transmission power of the second signal transmitted or relayed by the MR.

[0224] It should be noted that the ultimate purpose of the above adjustments is to enable the LR to transmit the first signal according to the second target transmission power.

[0225] For example: if the first operation includes: controlling the first communication module to adjust the transmission power of the second signal to the first target transmission power by applying the second power control bias value, or sending the third power control bias value to the second device, where the third power control bias value is used to adjust the transmission power of the second signal of the second device to the first target transmission power. At this time, the transmission signal of the second signal is adjusted to the first target transmission signal, and the subcarrier power of the second signal reaching the LR changes accordingly. Affected by the subcarrier power of the second signal, the LR can generate a first signal transmitted according to the second target transmission power based on backscattering.

[0226] In an embodiment of the present application, for a first device that simultaneously has a main communication module (i.e., the first communication module) and a very low-power communication module (i.e., the second communication module), it can use the very low-power 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 very low-power communication module based on the first information, so that the second target transmit power of the first signal sent by the very low-power communication module on the first device is more flexible, improving the communication performance of the very low-power communication module.

[0227] As an optional implementation manner, the first device obtaining the first information includes:

[0228] The first device obtains second information and determines the first information according to the second information;

[0229] Wherein, the second information includes at least one of the following:

[0230] The third target transmit power and the first adjustment amount of the first communication module, and the second target transmit power is determined based on the third target transmit power and the first adjustment amount;

[0231] The first parameter and the second adjustment amount of the first communication module, and the second parameter is determined based on the first parameter and the second adjustment amount;

[0232] The second parameter;

[0233] The first parameter includes a parameter for determining the third target transmit power; the second parameter includes a parameter for determining the second target transmit power.

[0234] In some implementation manners, the above second information may directly indicate the third target transmit signal and the second target transmit signal, or may indicate the relevant information for determining the third target transmit signal and the second target transmit signal.

[0235] In some implementation manners, the manner for the first device to obtain the second information may include at least one of the following:

[0236] Receiving at least part of the second information configured by the network side (the fourth device);

[0237] Obtaining at least part of the second information stored or calculated locally. For example: the terminal obtains the first adjustment amount configured by the network side and already knows the third target transmit power of the first communication module locally;

[0238] Obtaining at least part of the second information agreed upon by the protocol.

[0239] In some embodiments, the first target transmit power is equal to or not equal to the third target transmit power. The differences between the two include: the first target transmit power is calculated for the purpose of the LR transmitting the first signal according to the second target transmit power; the third target transmit power can be configured or indicated by the network side.

[0240] Wherein, when the first target transmit power is not equal to the third target transmit power and the MR provides an excitation source for the LR to perform backscattering, if it is necessary to control the LR to transmit the first signal according to the second target transmit power, the MR preferentially transmits the second signal according to the first target transmit power.

[0241] In this embodiment, through the above second information, the transmit power configuration of the two communication modules, namely the LR and the MR, can be achieved. Thereafter, the LR can transmit the first signal according to the second target transmit power, and the MR can transmit the second signal or other signals different from the second signal according to the third target transmit power.

[0242] In some embodiments, the second signal can be an OFDM signal, and the first signal can be a single-carrier signal.

[0243] Of course, in addition to the OFDM signal and the single-carrier signal, the above first signal and second signal can also be a combination of other types of signals, which is not specifically limited herein. For the convenience of description, in the embodiments of the present application, it is usually exemplified that the second signal can be an OFDM signal and the first signal can be a single-carrier signal.

[0244] In some embodiments, when the second signal is an OFDM signal, the above first parameter includes the parameters in the power control calculation formula for OFDM signals in the related art, which are not specifically limited herein.

[0245] 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:

[0246] Target receive power, first path loss, second path loss, maximum transmit power, type of the first signal, time length of one symbol in the first signal, frequency domain width of one symbol in the first signal, bias value of closed-loop power control, number of RBs in the occupied bandwidth of the first signal, number of subcarriers included 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;

[0247] Wherein, the first path loss is the power loss of the transmission paths of the first signal and the second signal measured based on a reference signal; 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.

[0248] To facilitate understanding of how the above second information implements the indication or configuration of the second target transmit power and the third target transmit power, the following several possible implementation manners are exemplified:

[0249] Embodiment 1: The second information includes the third target transmit power of the first communication module and a first adjustment amount.

[0250] 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 reference to the third target transmit power.

[0251] For example: The network indicates or agrees on a power adjustment amount Δ MR->LR , and the second target transmit power of a certain target transmission channel (PUSCH, PRACH, SRS, PUCCH, etc.) of the LR is the sum of the third target transmit power of the corresponding channel of the main communication module and the adjustment amount Δ MR->LR .

[0252] 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 ;

[0253] 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 ;

[0254] P LR,SRS,b′,f′,c′ (i′,q′ s ,l′) = P MR,SRS,b,f,c (i,q s ,l) + Δ MR->LR ;

[0255] P LR,PRACH,b′,f′,c′ (i′) = P MR,PRACH,b,f,c (i) + Δ MR->LR ;

[0256] Among them, parameter i is a symbol / time index; parameter j is a parameter configuration index for open-loop power control (for example, j = 0 represents the PUSCH in RACH, j = 1 represents the PUSCH related to Configured Grant, and j >= 2 represents the PUSCH for dynamic grant); parameter l is a process index for closed-loop power control; q d is a reference signal index; q u is an index for PUCCH; q s is an SRS resource set index; c is a serving cell index; f is a carrier index; b is a Bandwidth Part (BWP) index.

[0257] The meanings of b’, c’, f’, i’, j’, q’, l’ are similar to those of b, c, f, i, j, q, l above. The difference is that b’, c’, f’, i’, j’, q’, l’ are used for LR, and b, c, f, i, j, q, l are used for MR.

[0258] In some embodiments, b, c, f, i, j, q, l of MR can be the same as b’, c’, f’, i’, j’, q’, l’ of LR.

[0259] 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 can be different. At this time, the first device can 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 convention, so as to determine the second target transmit power of the associated b’, c’, f’, i’, j’, q’, l’ with reference to the third target transmit power of b, c, f, i, j, q, l, or determine the third target transmit power of the associated b, c, f, i, j, q, l with reference to the second target transmit power of b’, c’, f’, i’, j’, q’, l’.

[0260] In one embodiment, P LR,PUSCH,b′,f′,c′ (i′, j′, q′ d , l′) represents that LR is using the parameter set configuration with index j’ and the PUSCH power control process with index l’, and is transmitting PUSCH on the active uplink (UL) bandwidth part (BWP) b’ of carrier f’ in serving cell c’. Then LR will transmit the second target transmit power of PUSCH at PUSCH transmission opportunity i’;

[0261] P MR,PUSCH,b,f,c (i, j, qd , 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 the PUSCH on the active uplink (UL) bandwidth part (BWP) b of the carrier f in the serving cell c, the LR will calculate the second target transmit power of the PUSCH at the PUSCH transmission occasion i;

[0262] Corresponding to the PUSCH, the above P LR,PUCCH,b′,f′,c′ (i′, q′ u , q′ d , l′) indicates the second target transmit power of the PUCCH transmitted by the LR, P MR,PUCCH,b,f,c (i, q u , q d , l) indicates the third target transmit power of the PUCCH transmitted by the MR; the above P LR,SRS,b′,f′,c′ (i′, q′ s , l′) indicates the second target transmit power of the SRS transmitted by the LR, P MR,SRS,b,f,c (i, q s , l) indicates the third target transmit power of the SRS transmitted by the MR; the above P LR,PRACH,b′,f′,c′ (i′) indicates the second target transmit power of the PRACH transmitted by the LR, P MR,PRACH,b,f,c (i) indicates the third target transmit power of the PRACH transmitted by the MR, which will not be elaborated here.

[0263] Embodiment 2: The second information includes the second target transmit power of the second communication module and the third adjustment amount.

[0264] The differences between this embodiment and the above Embodiment 1 include: In this Embodiment 2, taking the second target transmit power as a reference, the second target transmit power is adjusted based on the third adjustment amount to obtain the corresponding third target transmit power.

[0265] In the above Embodiment 1 and Embodiment 2, the power control method of using one module in the first communication module and the second communication module as a reference module to control the power of the other module is more suitable for incremental power control in the case where one module activates another module during its operation, avoiding the first device from re-acquiring all power control parameters and re-performing path loss estimation, saving signaling overhead and delay in the power control process.

[0266] Embodiment 3: The second information includes the first parameter of the first communication module and the second adjustment amount.

[0267] In this embodiment, the first parameter can be adjusted based on the second adjustment amount to obtain the second parameter. Thereafter, the first device can calculate the third target transmission power based on the first parameter and calculate the second target transmission power based on the second parameter.

[0268] In some embodiments, there are two ways to calculate the second target transmission power according to the second parameter:

[0269] Method 1: Convert the relevant parameters of the first signal into the parameters of the OFDM signal, and substitute the converted parameters into the uplink power calculation formula in the related art to calculate the second target transmission power of the first signal.

[0270] For example: If the first signal is a single-carrier signal, the parameters of the first signal can be converted into the 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 related art to obtain the second target transmission power of the single-carrier signal.

[0271] As an alternative embodiment, the second parameter represents the parameters of the OFDM signal equivalent to the first signal. At this time, the second target transmission power can be determined based on the following formula according to the second parameter:

[0272]

[0273] Where P' represents the second target transmission power; P' CMAX represents the maximum transmission power of the second communication module; P' O represents the target received power of the equivalent OFDM signal on 1 RB; represents the number of RBs of the occupied bandwidth B of the first signal; PL' represents the path loss of the first signal; Δ' TF represents the transmission power required by the second communication module for each resource element RE; f' represents the bias value for closed-loop power control of the first signal.

[0274] In some embodiments, Δ' TF is determined based on the following formula:

[0275]

[0276] Where γ' represents the number of bits carried by each symbol of the first signal on average; γ′' represents the average number of bits carried by the first signal on each RE; represents the number of OFDM subcarriers included in 1 RB of the first signal; β' 0 and β' 1 are bias values.

[0277] It should be noted that γ' obtains the average number of bits on each single - carrier symbol, while Δ in the OFDM power control calculation formula in the related art TF is defined according to the average number of bits carried by 1 RE. Therefore, it is also necessary to divide γ' by to obtain the average number of bits carried by each RE of the first signal.

[0278] Optionally, the above - mentioned second target transmission power may specifically refer to the second target transmission power of the first signal calculated based on the i'-th symbol / transmission time, the j'-th open - loop control configuration, the reference signal q', and the l'-th closed - loop power control process. For simplicity, the i', j', q', and l' parameters are omitted in the formula for calculating the target transmission power in the embodiments of the present application.

[0279] For example: The second target transmission 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:

[0280]

[0281] where P' O (j') is the same as the NR definition in the related art and is the second target received power of the equivalent OFDM signal on an RB with 15 kHz SCS assumed.

[0282] The above β' 0 and β' 1 are two bias values related to the transmission channel (data / signaling), modulation method, etc., which can be constants or functions of j' and l'. Here, 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 embodiments of the present application, a certain parameter being optional means that the power adjustment does not change with this parameter (for example: when β' 0 and β' 1 take the value of 1, it is equivalent to not taking effect).

[0283] f'(i', l') is the bias value introduced by the closed - loop power control process l' at time i', which can be indicated by signaling for the absolute value or by the network side for the difference value, and the UE obtains the absolute value through cumulative summation. Optionally, if the closed - loop power control has not taken effect, such as when the TPC signaling has not been received or before the connection is established, f'(i', l') and f(i, l) may not exist, and only open - loop power control is available at this time.

[0284] Optionally, the above target transmit power can also be defined for BWP b’, carrier f’, and cell c’. For simplicity, the above parameters b’, f’, and c’ are also omitted in the formula for calculating the target transmit power in the embodiments of the present application.

[0285] In this embodiment, by converting the parameters of the first signal into the 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.

[0286] 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.

[0287] As an optional implementation, the first signal is a single-carrier signal, and the second parameter is expressed as a parameter in the power control calculation formula defined for the first signal. At this time, the second parameter can be substituted into the following formula to obtain the second target transmit power:

[0288] P' = min{P' CMAX , P' O,S + PL' + Δ' TF,S + f'};

[0289] Wherein, P' O,S represents the target received power on 1 single-carrier symbol; Δ' TF,S represents the transmit power required by the second communication module for each single-carrier symbol.

[0290] In some embodiments, since the single-carrier signals that may be modulated at each moment are different, therefore, P' O,S can take the average power of the first signal, or take the sum of the powers accumulated over a fixed bandwidth from the power spectral density of the first signal as P' O,S .

[0291] For example: Assume 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.

[0292] For another example: Calculate according to the calculated / measured power spectral density (PSD) of the random signal. For example, according to a certain criterion, the sum of the powers accumulated in a certain bandwidth region can be used as P O,S , such as only selecting the region within the first main lobe for power accumulation.

[0293] In some embodiments, Δ' TF,S is determined based on the following formula:

[0294]

[0295] Among them, 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 bias values.

[0296] Optionally, the above second target transmit power may specifically refer to the second target transmit power of the first signal calculated based on the i'-th symbol / transmission time, the j'-th open-loop control configuration, the reference signal q', and the l'-th closed-loop power control process. For simplicity, the i', j', q', and l' parameters are omitted in the formula for calculating the target transmit power in the embodiments of the present application.

[0297] 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:

[0298] P'(i',j',q',l') = min{P' CMAX (i'), P' O,S (i') + PL'(q') + Δ' TF,S + f'(i',l')}

[0299] Among them, P' O,S (i') is defined as the second target receive power on 1 single-carrier symbol, which is independent of the bandwidth but related to the modulation method. For example, it is defined as the average power under a certain modulation method, the power of the 3dB bandwidth of the average power spectral density, etc.;

[0300] Generally, T s B = 1, but in high spectral efficiency communication, it may be set that T s B < 1;

[0301] β' 2 and β' 3 are two bias values related to the transmission channel (data / signaling) of the first signal, the modulation method, etc., which can be constants or functions of j' and l', and are defined by the network side or the protocol. β' 2 and β' 3 are optional parameters. In the embodiments of the present application, the fact that a certain parameter is optional means that the power adjustment does not change with this parameter (for example: when β' 2 and β' 3 take the value of 1, it is equivalent to not taking effect).

[0302] In this embodiment, when the first signal is a single-carrier signal, based on the characteristics of the single-carrier signal, a calculation formula for the uplink transmission power applicable to the single-carrier signal is defined. In this way, the second parameter of the single-carrier signal can be directly substituted into the above formula to calculate the second target transmission power of the second communication module for the single-carrier signal.

[0303] Embodiment 4: The second information includes the second parameter of the second communication module and the fourth adjustment amount.

[0304] The differences between this embodiment and the above Embodiment 3 include: In Embodiment 4, with the second parameter as a reference, the second parameter is adjusted based on the fourth adjustment amount to obtain the first parameter.

[0305] The above Embodiment 3 and Embodiment 4 can perform joint power control on the first communication module and the second communication module to configure the power control parameters of the two communication modules through one power parameter configuration process. For example: If two communication modules need to be turned on simultaneously when the first device is powered on, the power control parameters of the two communication modules can be obtained based on the above Embodiment 3 and Embodiment 4 at this time.

[0306] Embodiment 5: The second information can directly indicate the first parameter and the second parameter.

[0307] In this embodiment, the first device can directly obtain the first parameter and the second parameter, and calculate the third target transmission power and the second target transmission power respectively based on the first parameter and the second parameter.

[0308] In some embodiments, the method further includes:

[0309] The first device obtains first associated information;

[0310] When the first information includes the third target transmission power and the first adjustment amount, the first associated information is used to indicate the association relationship among the third target transmission power, the first adjustment amount, and the second target transmission power;

[0311] When the first information includes the first parameter and the second adjustment amount, the first associated information is used to indicate the association relationship among the first parameter, the second adjustment amount, and the second parameter;

[0312] When the first information includes the second target transmission power and the third adjustment amount, the first associated information is used to indicate the association relationship among the second target transmission power, the third adjustment amount, and the third target transmission power;

[0313] When the first information includes the second parameter and the fourth adjustment amount, the first association information is used to indicate the association relationship among the second parameter, the fourth adjustment amount, and the third target transmission power.

[0314] In some embodiments, the first association information may be the b, f, c, i, j, q, l of the second signal and the association information of b′, f′, c′, i’, j’, q’, l’ of the first signal.

[0315] Optionally, if the values of b, f, c, i, j, q, l and the associated b′, f′, c′, i’, j’, q’, l’ are the same, it indicates that the two are associated with each other.

[0316] Alternatively, the association relationship between b, f, c, i, j, q, l and b′, f′, c′, i’, j’, q’, l’ can be indicated by means of network side indication or protocol convention.

[0317] For the above-mentioned first embodiment, the first association information is used to indicate the association relationship among the third target transmission power, the first adjustment amount, and the second target transmission power. In this way, the third target transmission power can be adjusted by using the first adjustment amount to obtain the second target transmission power associated with the first adjustment amount and the third target transmission power.

[0318] For the above-mentioned second embodiment, the first association information is used to indicate the association relationship among the first parameter, the second adjustment amount, and the second parameter. In this way, the first parameter can be adjusted by using the second adjustment amount to obtain the second parameter associated with the second adjustment amount and the first parameter.

[0319] For the above-mentioned third embodiment, the first association information is used to indicate the association relationship among the second target transmission power, the third adjustment amount, and the third target transmission power. In this way, the second target transmission power can be adjusted by using the third adjustment amount to obtain the third target transmission power associated with the third adjustment amount and the second target transmission power.

[0320] For the above-mentioned fourth embodiment, the first association information is used to indicate the association relationship among the second parameter, the fourth adjustment amount, and the third target transmission power. In this way, the second parameter can be adjusted by using the fourth adjustment amount to obtain the first parameter associated with the fourth adjustment amount and the second parameter.

[0321] In some embodiments, the second adjustment amount includes at least one of the following:

[0322] Adjustment amount of the target received power: ΔP MR->LR,O,b′,f′,c′ ;

[0323] Adjustment amount of partial path loss compensation factor: Δα MR->LR,b′,f′,c′ ;

[0324] Adjustment amount of path loss: ΔPL MR->LR,b′,f′,c′ ;

[0325] Adjustment amount of power control bias value: Δf MR->LR,b′,f′,c′ ;

[0326] Other adjustment amounts: For example, when the LR only supports the uplink (UpLink only, UL only), the power control of the LR can refer to the reference signal received power (Reference Signal Received Power, RSRP) of the MR downlink to measure the path loss, and the downlink path loss cannot be directly used as the UL path loss because the MR and LR may use different frequency points and different signal formats, and an additional path loss bias value needs to be added to compensate for these factors.

[0327] It should be noted that the above second adjustment amount can be associated with parameters such as i, j, q, l, etc., such as ΔP MR->LR,O,b′,f′,c′ (i′, j′, q′, l′).

[0328] As an alternative implementation, the method further includes:

[0329] The first device measures the reference signal from the third device using the first communication module to obtain a third path loss;

[0330] The first device determines a path loss bias value according to the difference between the reference signal and the first signal;

[0331] The first device determines the first path loss according to the third path loss and the path loss bias value.

[0332] Among them, the third path loss can be the path loss between the first device and the third device measured based on the reference signal corresponding to the first communication module. The first path loss is the path loss caused by transmitting the first signal between the first device and the third device.

[0333] It should be noted that the signals transmitted by the first communication module and 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 these two signals according to the difference between the reference signal measured by the first communication module and the first signal, and adjust the third path loss measured by the first communication module for the reference signal between the first device and the third device based on this path loss bias value to obtain the first path loss between the second communication module and the third device.

[0334] It is worth noting that the above path loss offset value may not be independently indicated by the second adjustment amount, but may be included in the offset value of the second path loss or the second closed-loop power control.

[0335] In this embodiment, the path loss measurement function of the first communication module can be used to determine the path loss between the second communication module and the third device.

[0336] It should be noted that in the above embodiments, 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 two-way 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.

[0337] It should be noted that in some embodiments, when the second communication module has the reference signal measurement function, the path loss measurement function of the second communication module can also be used to measure the first path loss.

[0338] In some embodiments, when the signal transmission bandwidths of the first communication module and the second communication module are different:

[0339] The second adjustment amount includes a first power adjustment amount, and the first power adjustment amount is used to indicate the power adjustment caused by the conversion of the signal transmission bandwidth of the first communication module to the signal transmission bandwidth of the second communication module; or,

[0340] The fourth adjustment amount includes a second power adjustment amount, and the second power adjustment amount is used to indicate the power adjustment caused by the conversion of the signal transmission bandwidth of the second communication module to the signal transmission bandwidth of the first communication module.

[0341] Among them, the above first power adjustment amount and second power adjustment amount are used to indicate the power adjustment caused by different signal transmission bandwidths.

[0342] For example: when the second signal is an orthogonal frequency division multiplexing (OFDM) signal, the first signal is a single-carrier signal, and the second target transmission power is calculated using the signal transmission bandwidth definition of OFDM for the first signal:

[0343] The first power adjustment amount is:

[0344] The second power adjustment amount is:

[0345] Among them, The number of RBs of the occupied bandwidth B of the first signal; The number of RBs of the occupied bandwidth B of the second signal.

[0346] In some embodiments, when calculating the second target transmission power using the bandwidth definition of OFDM for the first signal, it may be to convert the parameters of the first signal into the second parameters of an equivalent OFDM signal, and calculate the second target transmission power by substituting the second parameters into the following formula:

[0347] Or,

[0348]

[0349] Taking the calculation of the second target transmission power based on the following formula as an example:

[0350]

[0351] 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′ ×15 kHz), then the first power adjustment amount to be added is That is Adjusted to

[0352] In the above Embodiment 4, assuming the parameter item corresponding to the signal bandwidth in LR Since the signal bandwidth of LR is RBs (SCS is 2 μ′ ×15 kHz), if the signal bandwidth of MR is (which is 2 μ ×15 kHz), then the second power adjustment amount to be added is That is Adjusted to

[0353] In some embodiments, 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 bandwidth definition of a single - carrier to calculate the second target transmission power:

[0354] The first power adjustment amount is:

[0355] The second power adjustment amount is:

[0356] Among them, The number of RBs representing the occupied bandwidth B of the second signal.

[0357] In some embodiments, the first signal uses the bandwidth definition of a single carrier to calculate the second target transmission power, which may be to substitute a second parameter into the following formula defined for a single carrier signal to calculate the second target transmission power:

[0358] P' = min{P' CMAX , P' O,S + PL' + Δ' TF,S + f'}; or

[0359] P'(i', j', q', l') = min{P' CMAX (i'), P' O,S (i') + PL'(q') + Δ' TF,S + f'(i', l')};

[0360] Taking the calculation of the second target transmission power based on the following formula as an example:

[0361] P'(i', j', q', l') = min{P' CMAX (i'), P' O,S (i') + PL'(q') + Δ' TF,S + f'(i', l')};

[0362] In the above Embodiment 2, for the parameter item corresponding to the signal bandwidth in MR Since there is no parameter item corresponding to the signal bandwidth in the power control calculation formula of LR, the first power adjustment amount to be added is

[0363] In the above Embodiment 4, since there is no parameter item corresponding to the signal bandwidth in the power control calculation formula of LR, if the signal bandwidth of MR is (being 2 μ × 15 kHz), then the second power adjustment amount to be added is

[0364] In some embodiments, when the signal transmission formats of the first communication module and the second communication module are different:

[0365] 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 the conversion of the signal transmission format of the first communication module to the signal transmission format of the second communication module; or,

[0366] 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 the conversion of the signal transmission format of the second communication module to the signal transmission format of the first communication module.

[0367] Among them, the above-mentioned third power adjustment amount and fourth power adjustment amount are used to indicate the power adjustment caused by different signal transmission formats.

[0368] For example: The third power adjustment amount includes: Δ LR,TF -Δ MR,TF ;

[0369] The fourth power adjustment amount includes: Δ MR,TF -Δ LR,TF ;

[0370] Among them, Δ MR,TF represents the transmission power required by the first communication module for each resource element RE; Δ LR,TF represents the transmission power required by the second communication module for each RE;

[0371] In the case where the first signal is an orthogonal frequency division multiplexing OFDM signal, the first signal is a single carrier signal, and the second target transmission power is calculated using the bandwidth definition of OFDM for the first signal:

[0372] In the case where the second signal is an orthogonal frequency division multiplexing OFDM signal, the first signal is a single carrier signal, and the second target transmission power is calculated using the bandwidth definition of the single carrier for the first signal:

[0373] Among them, γ' represents the number of bits carried by each symbol on average in the first signal; represents the number of OFDM subcarriers included in one RB; represents the number of RBs of the occupied bandwidth B of 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.

[0374] In some embodiments, at least one of the above-mentioned first power adjustment amount, second power adjustment amount, third power adjustment amount, and fourth power adjustment amount may be indicated by the network side or agreed upon by the protocol.

[0375] In some other embodiments, at least one of the above-mentioned first power adjustment amount, second power adjustment amount, third power adjustment amount, and fourth power adjustment amount can be determined by the first device according to the difference between the second signal sent by the first communication module and the first signal sent by the second communication module.

[0376] It should be noted that when the adjustment amount (such as at least one of the first adjustment amount, second adjustment amount, third adjustment amount, and fourth adjustment amount) in the above-mentioned first information is configured by the network side (such as the fourth device), the configuration method of the adjustment amount can include at least one of the following:

[0377] Configuration method 1: Directly configure the adjustment amount. Among them, 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: Taking the third target reception power of BWP 1 of MR as a reference, adjust the second target reception power value of BWP 2 of LR. Then directly indicate that the first adjustment amount regarding P MR,O,1,f,c is ΔP MR->LR,O,2 Then, the second target reception power value of LR on 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 .

[0378] Configuration method 2: Pre-define or configure at least two groups of possible adjustment amount correspondence relationships, and the network side indicates to activate one group of adjustment values.

[0379] For example: Configure at least two groups of possible adjustment amounts based on Table 1 below:

[0380] Table 1

[0381]

[0382]

[0383] As shown in Table 1 above, each group of adjustment amounts is uniquely indicated by its own index (0, 1). Thereafter, the network side can indicate the index so that the first device uses the group of adjustment amounts corresponding to the index.

[0384] Configuration method 3: 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.

[0385] In some embodiments, when the first information includes the first parameter and the second parameter, the first device obtaining the first information includes:

[0386] The first device obtains first configuration information;

[0387] The first device receives a Transmission Power Control (TPC) signaling;

[0388] Wherein, 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;

[0389] The first parameter includes the first static power control parameter and the first dynamic power control parameter; the second parameter includes the second static power control parameter and the second dynamic power control parameter.

[0390] In some embodiments, the above first configuration information represents static power control parameters, such as: target received power, reference signal, partial path loss compensation factor, etc.

[0391] Optionally, the target static power control parameter includes at least one of the following:

[0392] Target received power;

[0393] Partial path loss compensation factor;

[0394] A parameter set composed of the target received power and the partial path loss compensation factor;

[0395] Reference signal for estimating path loss;

[0396] Maximum number of retransmissions;

[0397] Step size of power ramping;

[0398] Wherein, the target static power control parameter includes at least one of the first static power control parameter and the second static power control parameter.

[0399] 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 the configuration information of the power control parameter of the OFDM communication module in the related art. For example: adding a field to the configuration information of the power control parameter of the OFDM communication module to carry the first static power control parameter through the existing field and indicate the second static power control parameter through the added field.

[0400] For example, for at least one of the channels or signals such as PRACH, PUSCH, SRS, and PUCCH, the network side can indicate at least one of the following parameter groups to the first device through the first configuration information:

[0401] 1) The target received power p0-MR of MR and the target received power p0-LR of LR;

[0402] Optionally, the first configuration information can indicate the bias value of the target received power of MR compared to a given threshold, and the bias value of the target received power of LR compared to a given threshold. For example, the target received power of Msg3 PUSCH can be the bias value compared to the target received power of PRACH.

[0403] 2) The partial path loss compensation factor alpha-MR of MR and the partial path loss compensation factor alpha-LR of LR;

[0404] 3) The parameter set composed of the target received power and the partial path loss compensation factor of MR and LR;

[0405] 4) The reference signal for MR to estimate the first path loss and the reference signal for LR to estimate the second path loss;

[0406] 5) The maximum number of retransmissions of MR and the maximum number of retransmissions of LR;

[0407] 6) The step size of the power ramping of MR and the step size of the power ramping of LR.

[0408] It should be noted that each of the above parameter groups can include one absolute value and one relative value. For example, directly indicating the absolute value of the parameter value of MR, and indicating the parameter value of LR in the form of a bias value (Offset), then the actual parameter value adopted by LR is the sum / difference / product / quotient of the MR parameter value and Offset.

[0409] In some embodiments, in the case where at least one of the channels / signals of the first communication module and the second communication module is inconsistent, the first configuration information can indicate the first static power control parameter of at least one channel / signal of MR and the second static power control parameter of at least one channel / signal of LR.

[0410] It should be noted that in this embodiment, although the power control parameters of MR and LR are configured separately and their signal / channel types are different, the parameter of one channel / signal of MR or LR can still be used as the reference parameter of a certain channel / signal of the other module. Then, the first configuration information only needs to indicate the static power control parameter of the reference channel / signal and the bias value of the static power control parameter of the other module relative to the reference channel / signal.

[0411] In some embodiments, the above TPC signaling is used to indicate dynamic power control parameters, such as a power control offset value.

[0412] Optionally, the TPC signaling may be the TPC field in DCI.

[0413] In this embodiment, the power of PUSCH, SRS or PUCCH can be dynamically adjusted through the TPC signaling. According to different usage scenarios, the TPC signaling can indicate an absolute power offset value or a relative power offset value. The latter requires accumulating all relative power offset values to perform power control.

[0414] Optionally, the target dynamic power control parameter includes at least one of the following:

[0415] A first power offset value and a first scaling factor, and a second power offset value is determined based on the first power offset value and the first scaling factor;

[0416] A second power offset value and a second scaling factor, and a first power offset value is determined based on the second power offset value and the second scaling factor;

[0417] A first identifier that associates the first power offset value and the second power offset value;

[0418] A first power offset value and a second power offset value;

[0419] A target power offset value and first indication information, where the first indication information is used to indicate that the target power offset value is the power offset value of the first communication module or the second communication module;

[0420] Wherein, 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; the second power offset value is the offset value of the second target transmit power.

[0421] In some embodiments, in order to use the TPC signaling to adjust the power of two modules, at least one of the following methods can be adopted to redesign and interpret the TPC field:

[0422] Method 1: The network side indicates which of the first communication module and the second communication module the power offset value carried in the TPC field is applied to. The first device interprets the scaling factor s from the TPC field and performs at least one of operations such as summation / difference / product / quotient on the power offset value in the TPC field and the scaling factor s to obtain the power offset value of the other communication module among the first communication module and the second communication module.

[0423] Optionally, the power bias value carried in the above TPC field may indicate an absolute power bias value or a relative power bias value, which is not specifically limited herein.

[0424] Method 2: The first identifier may 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 is 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.

[0425] For example: The network side configures the association information between the first identifier and the first power bias value and the second power bias value through Table 2 below:

[0426] Table 2

[0427]

[0428] As shown in Table 2 above, the TPC field carries the first identifier (i.e., 0 or 1), and the first device determines the LR absolute power bias value and the MR absolute power bias value, or the LR relative power bias value and the MR relative power bias value, or the LR absolute power bias value and the MR relative power bias value, or the LR relative power bias value and the MR absolute power bias value indicated by the network side according to the first identifier carried in the TPC field.

[0429] Method 3: Designing the TPC field means being able to indicate two TPC values, which are the TPC values of the first communication module and the second communication module respectively.

[0430] Optionally, TPC includes two fields, namely {TPC 1, TPC 2}, where TPC 1 acts on MR or LR, and TPC2 acts on the other module.

[0431] Optionally, the interpretation tables of the above TPC 1 and TPC 2 may be the same or different, which is not specifically limited herein.

[0432] Optionally, what TPC 2 indicates may be a bias value relative to TPC 1.

[0433] Method 4: The TPC field may act on only one or both of MR and LR, and may indicate the communication module on which the TPC field acts in an explicit or implicit manner.

[0434] An implicit indication method is: assuming that the DCI where TPC is located is a DCI that only schedules a certain module among MR and LR, then the TPC value only acts on that module.

[0435] 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, this other field is: TPC_module, and TPC_module = 00 indicates that it applies to the LR, TPC_module = 01 indicates that it applies to the MR, and TPC_module = 10 indicates that it applies to the LR and the MR.

[0436] In this embodiment, the target dynamic power control parameter can be interpreted from the TPC field by designing or interpreting the TPC field.

[0437] It is worth noting that in the existing NR protocol, the maximum transmission power is determined by the radio resource control (RRC) parameter P-Max, but there is only one communication module in NR. In the embodiment of the present application, the first device has two communication modules. At this time, the maximum transmission powers of the two communication modules need to be limited.

[0438] As an optional implementation manner, the third target transmission power and the second target transmission power satisfy at least one of the following conditions:

[0439] The first condition: the third target transmission power is less than or equal to the first maximum transmission power, and the second target transmission power is less than or equal to the second maximum transmission power;

[0440] The second condition: the sum of the third target transmission power and the second target transmission power is less than or equal to the target maximum transmission power, and the target maximum transmission power is the maximum total transmission power of the first communication module and the second communication module.

[0441] In some embodiments, independent maximum transmission powers can be set for the MR and the LR. At this time, the target transmission powers of the MR and the LR need to be less than or equal to their respective corresponding maximum transmission powers.

[0442] Optionally, the network side can indicate a maximum transmission power P-Max and a scaling value P-Scale. At this time, P-Max can be used as the maximum transmission power of one of the MR and the LR, and the maximum transmission power of the other of the MR and the LR can be obtained by performing an operation (such as at least one of summation / difference / product / quotient) on P-Scale and P-Max.

[0443] In other embodiments, a maximum transmission power can be set for the first device. At this time, the sum of the target transmission powers of the MR and the LR is less than or equal to the maximum transmission power of the first device.

[0444] In some embodiments, when the third target transmission power and the second target transmission power do not meet the second condition, the method further includes:

[0445] The first device obtains 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;

[0446] The first device updates the third target transmission power and the second target transmission power according to the second indication information and the target maximum transmission power, where the updated third target transmission power and second target transmission power meet the second condition.

[0447] In this embodiment, the transmission power allocation method of the LR and the MR is indicated by the second indication information, 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.

[0448] Optionally, the second indication information is used to indicate any one of the following:

[0449] The proportions of the third target transmission power and the second target transmission power in the total transmission power of the first device respectively; or,

[0450] When the sum of the target transmission powers of the first communication module and the second communication module is greater than the target maximum transmission power, the target transmission power of the first communication module or the second communication module is preferentially reduced so that the sum of the third target transmission power and the second target transmission power is less than or equal to the target maximum transmission power.

[0451] In this embodiment, the second indication information can use any one of the following methods to constrain the target transmission power of at least one of the MR and the LR:

[0452] 1) Define the power proportion of at least one of the MR and the LR. In this way, the proportion of the transmission power of at least one of the MR and the LR in the maximum transmission power of the first device can be determined according to the power proportion. For example: limit the maximum transmission power of the LR to be less than or equal to 20% of the maximum transmission power of the first device, and the remaining 80% of the maximum transmission power of the first device is the maximum transmission power of the MR.

[0453] 2) When the sum of the target transmission powers of the MR and the LR calculated based on the power control calculation formula is greater than the maximum transmission power of the first device, the second indication information can be used to indicate how to reduce the transmission power of the first device. For example, the target transmission powers of the MR and the LR can be scaled so that the sum of the target transmission powers of the MR and the LR is less than or equal to the target maximum transmission power. Alternatively, the transmission power of the MR or the LR can be preferentially guaranteed to remain unchanged, and only the transmission power of the other communication module is reduced so that the total transmission power of the first device is less than or equal to the target maximum transmission power.

[0454] Optionally, the relevant parameters of the maximum transmission power of at least one of the above MR and LR (such as the maximum transmission power of the MR, the maximum transmission power of the LR, the scaling value P-Scale, the maximum transmission power P-Max, the second indication information, etc.) can be indicated based on RRC or other signaling.

[0455] It should be noted that there are various reference signals for measuring the first path loss and measurement nodes for performing path loss measurement. Under different path loss measurement schemes, the first path loss can be the same as or different from the second path loss.

[0456] For example: Suppose the second device sends a second signal, which is used by the second communication module for backscattering to generate and send a 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, and the second communication module measures the reference signal sent by the second device, the measured first path loss is the one-way path loss between the second communication module and the second device. In the actual backscatter communication process, the second path loss that needs to be compensated is the two-way path loss between the second communication module and the second device, that is, the second path loss = 2 * the first path loss.

[0457] Optionally, the second path loss includes the target modulation loss PL Mod , and the target modulation loss PL Mod includes the modulation loss caused by the second communication module for backscattering the signal.

[0458] In this embodiment, the second path loss can also consider the target modulation loss caused by the backscatter modulation of the second communication module. For example: the second path loss = 2 * the first path loss + the target modulation loss.

[0459] It should be noted that if the second communication module does not have the path loss measurement ability, there are two possibilities for the measured path loss:

[0460] 1) The first path loss measured is the round-trip path loss plus the modulation loss. For example, assume that the second device and the third device are located on the same physical entity device. The second device sends a reference signal and receives the reference signal reflected by the first device to measure the first path loss based on this reference signal. At this time, the first path loss is the round-trip path loss between the first device and the second device plus the target modulation loss.

[0461] 2) The first path loss measured is only the one-way path loss and does not consider the target modulation loss. For example, assume that the second device and the third device are located on the same physical entity device. The first device sends a reference signal, and the second device measures the first path loss based on this 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.

[0462] 3) The reference signal sent by the second device is measured by the first communication module. At this time, due to the differences in the bandwidth and signal format between this 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, it is necessary to adjust the path loss measured by the first communication module to obtain the actual path loss of the first signal. For example, according to the differences in the bandwidth and signal format between the reference signal measured by the first communication module and the first signal, determine the power loss offset value, and perform at least one of the operations of addition, subtraction, multiplication, and division on the path loss measured by the first communication module and this power loss offset value to obtain the actual path loss of the first signal.

[0463] The following is an example to illustrate the first path loss and the second path loss in combination with the topology of LR:

[0464] 1) In the connection topologies 1 as shown in Figure 9a , connection topology 2 as shown in Figure 9b , and connection topology 4 as shown in Figure 9e , 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 the round-trip path loss. For example, if the path loss from the second communication module to the UE / gNB / auxiliary node is PL LR->UE / gNB , then the actual second path loss is 2*PL LR->UE / gNB (dB).

[0465] Optionally, if the power loss caused by modulating the signal of the two communication modules is taken into account, then the target modulation loss PL Mod also needs to be added to the final path loss, that is, the second path loss is 2*PL LR>UE / gNB + PL Mod (dB).

[0466] In some embodiments, if the second communication module is unable to 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 measures the path loss. The first path loss obtained by this measurement is the round-trip path loss. However, this belongs to closed-loop power control and does not belong to open-loop power control. At this time, it can be considered that the open-loop power control does not exist or fails.

[0467] Optionally, for connection topology 2, assume 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.

[0468] 2) For Figure 9c and Figure 9d as shown in connection topology 3, the nodes for the second communication module and the network side to perform uplink and downlink transmissions are different, that is, the second device and the third device are two different devices. At this time, the uplink and downlink path losses are asymmetric.

[0469] Taking connection topology 3 as shown in Figure 9c as an example, for Device A or Device B, the path loss for uplink power control includes two segments, from the second device -> the second communication module, and from the second communication module -> the third device, which can be measured by the reference signal sent by the second device (assuming the measured path loss is PL LR1 ), and the reference signal sent by the third device (assuming the measured path loss is PL LR2 ), respectively. Then, the two path losses are summed up, that is, the second path loss PL LR = PL LR1 + PL LR2 (dB).

[0470] Optionally, if the power loss caused by modulating the signal of the second communication module is taken into account, then the target modulation loss PL Mod also needs to be added to the final path loss, that is, the second path loss PL LR = PL LR1 + PL LR2 + PL Mod (dB).

[0471] It should be noted that if the second communication module is unable to measure the reference signal sent by any one of the second device and the third device, or there is no corresponding reference signal, then the second communication module cannot perform open-loop power control at this time.

[0472] In some embodiments, during the open-loop power control process, the measurement methods of the first path loss can include the following two types:

[0473] 1) The second communication module measures the reference signals transmitted by at least one of the second device and the third device to obtain a first path loss.

[0474] 2) The second communication module transmits 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.

[0475] In some embodiments, which method to use for measuring the first path loss may be determined according to whether the second communication module has the path loss measurement capability.

[0476] For example: when the second communication module has the path loss measurement capability, at least one of the second device and the third device transmits a reference signal, and the second communication module measures the reference signal to obtain a first path loss; when the second communication module does not have the path loss measurement capability, the second communication module transmits 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.

[0477] As an alternative embodiment, when the first information includes the second target transmit power, the method further includes:

[0478] The first device determines at least one of the first power control offset value, the second power control offset value, and the third power control offset value according to the second target transmit power and the first capability information, where the first capability information is related to the power control of at least one of the first communication module and the second communication module.

[0479] Optionally, the first capability information includes at least one of the following:

[0480] First indication information for indicating whether the first communication module can perform power control;

[0481] The minimum transmit power of the first communication module;

[0482] The maximum transmit power of the first communication module;

[0483] The available power set of the first communication module;

[0484] Second indication information for indicating whether the second communication module can perform power control;

[0485] The maximum power attenuation capability of the second communication module;

[0486] The maximum power amplification capability of the second communication module;

[0487] The set of power attenuation values of the second communication module;

[0488] The set of power amplification values of the second communication module.

[0489] In some embodiments, the second target transmission power may be calculated by the first device, or the second target transmission power may be calculated by a network-side device (such as a second device, a third device, or a fourth device), and the second target transmission power or a second parameter for calculating the second target transmission power may be sent to the first device.

[0490] In some embodiments, the first device may determine, based on the second target transmission power and the current transmission power of the first device, that power amplification or power attenuation processing needs to be performed on the current transmission power, and the bias value of the power amplification or power attenuation processing:

[0491] 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 transmission power of the second communication module for the first signal to the second target transmission power based on the first power control bias value;

[0492] 2) When the capability of the second communication module does 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 may be determined to adjust the transmission power of the second device for the second signal to the first target transmission power based on the third power control bias value, so that, under the influence of the first target transmission power, the second communication module generates a first signal transmitted at the second target transmission power; or, the first power control bias value and the third power control bias value may 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 device for the second signal based on the third power control bias value, ultimately achieving adjusting the transmission power of the second communication module for the first signal to the second target transmission power;

[0493] 3) When the capability of the second communication module does not support the power control of the bias value for the power amplification or power attenuation process, 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 first communication module for the second signal to the first target transmission power based on the second power control bias value, so that the first signal transmitted at the second target transmission power is generated by the second communication module 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 first communication module for the second signal based on the second power control bias value, ultimately achieving the adjustment of the transmission power of the second communication module for the first signal to the second target transmission power.

[0494] In this embodiment, the first device determines the power bias value of at least one of the second communication module, the first communication module, and the second device according to 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 achieve the transmission of the first signal by the second communication module at the second target transmission power.

[0495] As another alternative embodiment, when the first information includes the second target transmission power, the method further includes:

[0496] The first device sends the first capability information to the fourth device, where the first capability information is related to the power control of at least one of the first communication module and the second communication module;

[0497] The first device receives at least one of the first power control bias value and the second power control bias value from the fourth device.

[0498] In this embodiment, the first device reports the capability information related to the power control of at least one of the first communication module and the second communication module to the fourth device. The fourth device calculates the second target transmission power and allocates power bias values for the first communication module and the second communication module according to the second target transmission power and the current transmission power of the second communication module, so as to ultimately achieve the transmission of the first signal by the second communication module at the second target transmission power.

[0499] It should be noted that in some embodiments, the second device sends a second signal. At this time, the fourth device can also obtain second capability information, where the second capability information is related to the power control of the second device; and the fourth device can also send a third power control offset value to the second device, and the third power control offset value is used to adjust the transmission power of the second device for the second signal to a 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.

[0500] 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:

[0501] The first device sends third information to the fourth device, and the third information includes at least one of the following:

[0502] The second target transmission power;

[0503] A second parameter, where the second parameter includes a parameter for determining the second target transmission power;

[0504] A fourth power control offset value, where the fourth power offset value is the offset value between the second target transmission power and the current transmission power of the sending end of the second signal;

[0505] A first transmission power, where the first transmission power is the transmission power obtained by subtracting the 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.

[0506] In some embodiments, the first device calculates the second target transmission power and sends the second target transmission power to the fourth device, or sends a second parameter for calculating the second target transmission power, so that the fourth device can thereby know the second target transmission power.

[0507] In other embodiments, the first device calculates the second target transmission power and sends the offset value between the second target transmission power and the current transmission power of the sending end of the second signal to the fourth device, so that the fourth device can thereby determine at least one of the first power control offset value, the second power control offset value, and the third power control offset value. For example, it is determined that the third power control offset value is equal to the fourth power offset value.

[0508] In some other embodiments, the first device sends the calculated first transmission power to the fourth device. The fourth device can additionally obtain the path loss compensated by the first signal and the second signal, so as to increase, based on the first transmission power, a compensation power that can make up for the path loss of the first signal and the second signal, and obtain a second target transmission power.

[0509] As an alternative embodiment, when the sending 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:

[0510] The first device measures a reference signal sent by the third device to obtain a third path loss, where the third device is the receiving end device of the first signal;

[0511] The first device measures a reference signal sent by the second device to obtain a fourth path loss;

[0512] Wherein, the first path loss includes the third path loss and the fourth path loss.

[0513] 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 respectively.

[0514] In some embodiments, when the sending end of the first signal is the first communication module, the method further includes:

[0515] The first device measures a reference signal sent by the second device to obtain the first path loss.

[0516] In this embodiment, when the sending end of the first signal is the first communication module, since the first communication module and the second communication module are both located in the first device, the path loss between the first communication module and the second communication module can be not considered.

[0517] Optionally, when the sending 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 method further includes:

[0518] The first device backscatters a reference signal sent by the third device, where the third device is the receiving end device of the first signal;

[0519] The first device receives fourth information or a first signaling from the third device;

[0520] Wherein, the fourth information includes the first path loss, or the fourth information includes the first path loss and a partial path loss compensation factor; the first signaling is used to indicate the bias value of the closed-loop power control.

[0521] In some embodiments, the first signaling for indicating the bias value of the closed-loop power control may include that the first power control bias value is the bias value of the closed-loop power control.

[0522] In some embodiments, when the fourth information includes the first path loss, or the fourth information includes the first path loss and a partial path loss compensation factor, the first device may determine at least one of a first power control bias value, a second power control bias value, and a third power control bias value for compensating the first path loss.

[0523] In this embodiment, when the sending 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, a closed-loop power control manner may be adopted to estimate the path loss of the first signal, that is, the third device sends a reference signal, and the second communication module performs backscattering based on the reference signal. Thereafter, the third device may estimate the first path loss based on the signal backscattered by the second communication module.

[0524] In some embodiments, when the sending end of the first signal is the first communication module, the method further includes:

[0525] The first device controls the first communication module to send a reference signal;

[0526] The first device controls the second communication module to backscatter the reference signal sent by the first communication module;

[0527] The first device receives the fourth information or the first signaling from the third device, where the third device is the receiving end device of the first signal;

[0528] Wherein, the fourth information includes the first path loss, or the fourth information includes the first path loss and a partial path loss compensation factor; the first signaling is used to indicate the bias value of the closed-loop power control.

[0529] Similar to the previous embodiment, in this embodiment, when the transmitting end of the first signal is the first communication module, the closed-loop power control method 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.

[0530] In some embodiments, the first path loss is measured by the first communication module or the second communication module.

[0531] Optionally, when the first path loss is measured by the first communication module, the method further includes:

[0532] The first device determines a path loss offset value according to the difference between the reference signal measured by the first communication module and the first signal;

[0533] The first device determines the second path loss according to the first path loss and the path loss offset value.

[0534] It should be noted that based on the signals transmitted by the first communication module and the second communication module may be signals of different transmission formats or different bandwidths. Therefore, it is necessary to determine the path loss offset value between the path losses measured based on these two signals based on the difference between the reference signal measured by the first communication module and the second signal, and adjust the first path loss measured by the first communication module based on the path loss offset value to obtain the second path loss of the first signal.

[0535] Optionally, the above path loss offset value can be indicated by a second adjustment amount. Currently, the above path loss offset value may not be independently indicated by the second adjustment amount, but may be included in the second path loss or the offset value of the second closed-loop power control.

[0536] It should be noted that in some embodiments, when the second communication module has the function of measuring the reference signal, the path loss measurement function of the second communication module can also be used to measure the path loss of the first signal.

[0537] It should be noted that the power bias value in the embodiments of the present application can be a bias value relative to the current transmission power. For example, the first power control bias value is a bias value relative to the current transmission power of the second communication module. Alternatively, the power bias value in the embodiments of the present application can be a bias value relative to the power of a specified reference signal. For example, the second power control bias value is a bias value relative to the power of the reference SSB signal. Among them, when the power bias value is a bias value relative to the power of a specified reference signal, the reference signal can be indicated by means of protocol agreement or network side indication.

[0538] In addition, the current transmission power of the first communication module, the current transmission power of the second communication module, and the current transmission power of the second device in the embodiments of the present application can be the transmission power of the reference signal indicated by the network side or agreed by the protocol, such as the transmission power of the SSB, that is, the power bias value is a bias value relative to the transmission power of the specified reference signal. At this time, if the peer does not know the reference signal associated with the power bias value, then the first device or the fourth device also needs to indicate the reference signal associated with the bias value when indicating the power bias value.

[0539] To facilitate understanding of the path loss measurement and compensation scheme in the embodiments of the present application, assuming that the first device is a UE, the path loss measurement and compensation will be illustrated by way of example in combination with the following scenarios:

[0540] Scenario 1: The downlink of the MR provides the uplink radio frequency carrier of the LR.

[0541] Solution 1: When the UE measures the first path loss, the path loss measurement and compensation scheme includes the following steps:

[0542] 1a) The UE measures the reference signal sent by the third device and determines the path loss PL LR-Rx (dB) from the LR to the third device;

[0543] 2a) The UE measures the reference signal sent by the second device and determines the path loss PL LR-Rx (dB) from the second device to the LR;

[0544] 3a) The UE obtains the total path loss PL Total =PL LR-Rx +PL Tx-LR (dB);

[0545] 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.

[0546] Optionally, if the power loss PL UE caused by LR modulation is considered, PL Total can also be added to PLUE (dB), that is, PL Total = PL LR-Rx + PL Tx-LR + PL UE .

[0547] 4a) The UE determines the second target transmission power of the LR radio frequency carrier, indicates the power offset value of the MR (i.e., the second power control offset value) to the second device or via the third device to the second device, and adjusts the downlink signal transmission power of the MR (i.e., the first target transmission power).

[0548] Optionally, when determining the target transmission power, the UE can also add the power offset value of the closed-loop power control according to the TPC signaling from the second device or the third device.

[0549] Optionally, the second power control offset value (dB) = the second target transmission power (dBm) - the current downlink transmission power of the MR (dBm) - the power offset value of the LR itself.

[0550] 5a) The second device adjusts the transmission power of the MR downlink signal according to the above second power offset value, but not greater than the maximum transmission power of the MR downlink signal.

[0551] Solution 2: When the third device measures the first path loss, at this time, the path loss measurement and compensation solution includes the following steps:

[0552] 1b) The third device measures the reference signal forwarded by the LR and sent by the second device, and determines the total path loss PL Total (dB) of the MR downlink signal reaching the receiving end after being forwarded by the LR;

[0553] Optionally, if considering the power loss PL UE caused by LR modulation, the UE can either add PL UE (dB) to the total path loss by itself, or report it to the third device to add PL UE (dB) to the total path loss.

[0554] 2b) The UE indicates the second target transmission power other than the path loss to the third device, and the third device determines the second target transmission power. Alternatively, the UE indicates the second parameter for determining the second target transmission power to the third device, and the third device calculates the second target transmission power by itself, or the third device indicates the measured total path loss to the UE, and the UE determines the second target transmission power and then indicates it to the third device.

[0555] 3b) The third device configures the first power control offset value for the UE and the third power control offset value for the second device.

[0556] Optionally, before step iii) above, at least one of the UE and the second device may report power control related capability information to the third device.

[0557] 4b) The second device adjusts the transmission power of the MR downlink signal according to the third power offset value, but not greater than the maximum transmission power of the MR downlink signal.

[0558] Scenario 2: The uplink of the LR is provided by the uplink of the MR.

[0559] In this Scenario 2, the UE itself is the provider of the RF carrier of the LR, and the signal is sent from the antenna of the MR and modulated by the antenna of the LR and then sent to the receiving end on the network side. Therefore, it is equivalent to setting the path loss from the second device to the LR in Scenario 1 to a determined known value PL MR-LR , for example, if there is no loss, PL MR-LR = 0 dB, or if there is loss, then PL MR-LR > 0 dB.

[0560] Similar to Scenario 1 above, this Scenario 2 includes the following two path loss measurement and compensation schemes:

[0561] Scheme 1': When the UE measures the first path loss, the path loss measurement and compensation scheme includes the following steps:

[0562] 1c) The UE measures the reference signal sent by the third device to determine the path loss PL LR-Rx (dB) from the LR to the third device, which is also the total path loss PL Total ;

[0563] Optionally, if considering the loss PL MR-LR from the MR to the LR and the power loss PL UE caused by the LR modulation, PL MR-LR and PL UE (dB) can also be added, that is, PL Total = PL Tx-LR + PL UE + PL MR-LR .

[0564] 2c) The UE determines the first target transmission power of the MR according to the power control criterion of the LR (i.e., aiming at the LR sending the first signal according to the second target transmission power).

[0565] Optionally, when determining the first target transmission power, the UE may also add the power offset value of the closed-loop power control according to the TPC signaling from the third device.

[0566] Optionally, the second power control bias value (dB) = the first target transmission power (dBm) - the current downlink transmission power of the MR (dBm) - the power bias value of the LR itself.

[0567] 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.

[0568] Optionally, the uplink signal transmission power actually adopted by the MR needs to satisfy the power control criteria of both the MR and the LR simultaneously.

[0569] Among them, the power control criteria include:

[0570] 1. For the transmitting end, its transmission power is less than or equal to the maximum transmission power of the transmitting end;

[0571] 2. For the receiving end, its received power is greater than or equal to the target received power.

[0572] Among them, for the received power of the receiving end to be greater than or equal to the target received power, it can be converted into the transmission power of the transmitting end being greater than or equal to the specified transmission power, so that the received power of the receiving end is greater than or equal to the target received power.

[0573] At this time, the uplink signal transmission power actually adopted by the MR above needs to satisfy the power control criteria of both the MR and the LR simultaneously, which may be to give priority to ensuring that the received power and transmission power of the LR meet the power control criteria of the LR. At this time, the received power of the MR may not meet its corresponding power control criteria. For example: in order to ensure that the LR transmits the first signal according to the second target transmission power, the received power of the MR may be less than the target received power of the MR.

[0574] Solution 2': Assume that the third device and the fourth device are the same device. When the third device measures the first path loss, at this time, the path loss measurement and compensation solution includes the following steps:

[0575] 1d) The third device measures the reference signal forwarded by the LR and sent by the MR, and determines the total path loss PL Total (dB) of the uplink signal of the MR reaching the receiving end after being forwarded by the LR;

[0576] Optionally, if considering the power loss PL UE caused by the LR modulation, the UE can add PL UE (dB) to the total path loss by itself, or report to the third device to add PL UE (dB) to the total path loss.

[0577] It should be noted that in this embodiment, PL Total has considered the loss of the signal passing through the MR to the LR, and there is no need to compensate for PL MR-LR。

[0578] 2d) The UE indicates to the third device the second target transmission power other than the path loss, and the third device determines the second target transmission power. Alternatively, the UE indicates to the third device the second parameter for determining the second target transmission power, and the third device calculates the second target transmission power by itself, or the third device indicates to the UE the measured total path loss, and the UE determines the second target transmission power and then indicates it to the third device.

[0579] 3d) The third device configures the first power control offset value and the second power control offset value for the UE.

[0580] 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.

[0581] 4d) The UE applies the first power control offset value to adjust the transmission power of the LR, and applies the second power control offset value to adjust the transmission power of the MR.

[0582] Optionally, the uplink signal transmission power actually used by the MR needs to satisfy 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 transmission power, and the uplink signal transmission power shall not be greater than the maximum uplink transmission 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 transmission power, and the uplink signal transmission power actually used by the LR shall not be greater than the maximum uplink transmission power of the LR.

[0583] See Figure 12 , the embodiment of the present application also provides another transmission power control method, and the execution subject of this another transmission power control method is the fourth device. As Figure 12 shown, the another transmission power control method executed by the fourth device includes the following steps:

[0584] Step 121, the fourth device performs a second operation, and the second operation includes at least one of the following:

[0585] Sending the first information to the first device;

[0586] Sending the second information to the first device;

[0587] Sending the third power control offset value to the second device, and the third power control offset value is used to adjust the transmission power of the second signal of the second device to the first target transmission power;

[0588] Wherein, the first device includes a first communication module and a second communication module, the second communication module is a very low power consumption communication module, and the second information includes the relevant information for determining the first information;

[0589] The first information includes at least one of the following:

[0590] The second target transmission power of the second communication module, where the second target transmission power is the target transmission power for the second communication module to send a first signal;

[0591] A first power control bias value, where the first power control bias value is used to adjust the transmission power of the second communication module for the first signal to the second target transmission power;

[0592] A second power control bias value, where the second power control bias value is used to adjust the transmission power of the first communication module for the second signal to the first target transmission power;

[0593] Wherein, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by backscattering the second signal by the second communication module.

[0594] In some embodiments, the fourth device may be a device for configuring or indicating the first information to the first device, for example: a network-side device. The network-side device may be an access network device or a core network device. Wherein, when the fourth device includes a core network device, demand information such as the target reception power can be obtained by using an application server in the core network, or the target transmission power can be calculated by using the computing function in the core network.

[0595] It should be noted that the above first information, second information, first device, first communication module, second communication module, first signal, first target transmission power, second signal, second target transmission power, first power control bias value, second power control bias value and third power control bias value have the same meanings and functions as those in the first information, second information, first device, first communication module, second communication module, first signal, first target transmission power, second signal, second target transmission power, first power control bias value, second power control bias value and third power control bias value in the method embodiment on the first device side, and will not be elaborated here.

[0596] The embodiment of the present application corresponds to the method embodiment on the first device side. Wherein, the method embodiment on the first device side is used to adjust the transmission power of the first signal generated by the second communication module based on the second signal to the second target transmission power. The method embodiment on the fourth device side can provide support for the first device to realize the adjustment of the transmission power of the first signal generated by the second communication module based on the second signal to the second target transmission power. And cooperate with configuring the power control parameters of the first communication module and the second device to realize path loss measurement and compensation, etc.

[0597] In some embodiments, the second information includes at least one of the following:

[0598] The third target transmission power and the first adjustment amount of the first communication module, and the second target transmission power is determined based on the third target transmission power and the first adjustment amount;

[0599] The first parameter and the second adjustment amount of the first communication module, and the second parameter is determined based on the first parameter and the second adjustment amount;

[0600] The second parameter;

[0601] Wherein, the first parameter includes a parameter for determining the third target transmission power; the second parameter includes a parameter for determining the second target transmission power.

[0602] 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:

[0603] Target receiving power, first path loss, second path loss, maximum transmission 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 included 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;

[0604] Wherein, the first path loss is the power loss of the transmission path of the first signal and the second signal measured based on a reference signal; 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.

[0605] In some embodiments, when the first information includes the second target transmission power, the method further includes:

[0606] The fourth device receives first capability information from the first device, where the first capability information is related to power control of at least one of the first communication module and the second communication module;

[0607] The fourth device sends at least one of the first power control bias value and the second power control bias value to the first device according to the first capability information and the second target transmission power.

[0608] In some embodiments, when the first information includes the second target transmission power, the method further includes:

[0609] The fourth device receives second capability information from the second device, and the second capability information is related to the power control of the second device;

[0610] The fourth device sends a third power control offset value to the second device according to the second capability information and the second target transmission power; wherein, the third power control offset value is used to adjust the transmission power of the second device for the second signal to a first target transmission power.

[0611] In some embodiments, the first capability information includes at least one of the following:

[0612] First indication information, which is used to indicate whether the first communication module can perform power control;

[0613] The minimum transmission power of the first communication module;

[0614] The maximum transmission power of the first communication module;

[0615] The set of available powers of the first communication module;

[0616] Second indication information, which is used to indicate whether the second communication module can perform power control;

[0617] The maximum power attenuation capability of the second communication module;

[0618] The maximum power amplification capability of the second communication module;

[0619] The set of power attenuation values of the second communication module;

[0620] The set of power amplification values of the second communication module.

[0621] In some embodiments, the second capability information includes at least one of the following:

[0622] The minimum transmission power of the second device;

[0623] The maximum transmission power of the second device;

[0624] The set of available powers of the second device.

[0625] In some embodiments, before the fourth device sends the third power control offset value to the second device according to the second capability information and the second target transmission power, the method further includes:

[0626] The fourth device receives third information from the first device;

[0627] The fourth device determines the second target transmit power according to the third information;

[0628] Wherein, the third information includes at least one of the following:

[0629] The second target transmit power;

[0630] A second parameter, where the second parameter includes a parameter for determining the second target transmit power;

[0631] A fourth power control bias value, where the fourth power bias value is the power bias value between the second target transmit power and the current transmit power of the transmitter of the second signal;

[0632] A first transmit power, where the first transmit power is the transmit power obtained by subtracting a second path loss from the second target transmit 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.

[0633] In the embodiments of the present application, the steps performed by the fourth device correspond to the steps performed by the first device in the method embodiments on the first device side, and the two cooperate with each other to jointly control the uplink transmit power of the second communication module on the first device.

[0634] In the embodiments of the present application, the execution subject of the transmit power control method may be a transmit power control device. In the embodiments of the present application, taking the transmit power control device executing the transmit power control method as an example, the transmit power control device provided in the embodiments of the present application is described.

[0635] Referring to Figure 13 , the embodiments of the present application further provide a transmit power control device, which is applied to the first device. As Figure 13 shown, the transmit power control device 1300 includes:

[0636] A first acquisition module 1301, configured to acquire first information, where the first device includes a first communication module and a second communication module, and the second communication module is a very low power consumption communication module;

[0637] A first execution module, configured to perform a first operation according to the first information;

[0638] Wherein, the first information includes at least one of the following:

[0639] The second target transmit power of the second communication module;

[0640] A first power control bias value;

[0641] A second power control bias value;

[0642] The first operation includes at least one of the following:

[0643] Controlling the second communication module to transmit a first signal at the second target transmission power;

[0644] Controlling the second communication module to adjust the transmission power of the first signal to the second target transmission power by applying the first power control bias value;

[0645] Controlling the first communication module to adjust the transmission power of the second signal to the first target transmission power by applying the second power control bias value;

[0646] Sending a third power control bias value to a second device, where the third power control bias value is used to adjust the transmission power of the second signal by the second device to the first target transmission power;

[0647] Wherein, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by the second communication module backscattering the second signal.

[0648] In some embodiments, the first acquisition module 1301 is specifically configured to:

[0649] Acquire second information, and determine the first information according to the second information;

[0650] Wherein, the second information includes at least one of the following:

[0651] The third target transmission power and the first adjustment amount of the first communication module, and the second target transmission power is determined based on the third target transmission power and the first adjustment amount;

[0652] The first parameter and the second adjustment amount of the first communication module, and the second parameter is determined based on the first parameter and the second adjustment amount;

[0653] The second parameter;

[0654] The first parameter includes a parameter for determining the third target transmission power; the second parameter includes a parameter for determining the second target transmission power.

[0655] 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:

[0656] Target received power, first path loss, second path loss, maximum transmit power, type of the first signal, time length of one symbol in the first signal, frequency-domain width of one 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 included 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;

[0657] Wherein, the first path loss is the power loss of the transmission paths of the first signal and the second signal measured based on a reference signal; 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.

[0658] In some embodiments, when the first information includes the second target transmit power, the transmit power control device 1300 further includes:

[0659] A first determination module, configured 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 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.

[0660] In some embodiments, when the first information includes the second target transmit power, the transmit power control device 1300 further includes:

[0661] A first transmission module, configured to send first capability information to a fourth device, 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;

[0662] A first reception module, configured to receive at least one of the first power control bias value and the second power control bias value from the fourth device.

[0663] In some embodiments, the transmit power control device 1300 further includes:

[0664] A second transmission module, configured to send third information to the fourth device, where the third information includes at least one of the following:

[0665] The second target transmit power;

[0666] A second parameter, where the second parameter includes a parameter for determining the second target transmit power;

[0667] The fourth power control bias value, where the fourth power bias value is the bias value between the second target transmission power and the current transmission power of the transmitter of the second signal;

[0668] The first transmission power, where the first transmission power is the transmission power obtained by subtracting the 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.

[0669] In some embodiments, the first capability information includes at least one of the following:

[0670] The first indication information, which is used to indicate whether the first communication module can perform power control;

[0671] The minimum transmission power of the first communication module;

[0672] The maximum transmission power of the first communication module;

[0673] The set of available powers of the first communication module;

[0674] The second indication information, which is used to indicate whether the second communication module can perform power control;

[0675] The maximum power attenuation capability of the second communication module;

[0676] The maximum power amplification capability of the second communication module;

[0677] The set of power attenuation values of the second communication module;

[0678] The set of power amplification values of the second communication module.

[0679] In some embodiments, when the transmitter of the second signal is the second device and the downlink of the first communication module provides the uplink RF carrier of the second communication module, the transmit power control device 1300 further includes:

[0680] The first measurement module, which is used to measure the reference signal sent by the third device to obtain the third path loss, where the third device is the receiving end device of the first signal;

[0681] The second measurement module, which is used to measure the reference signal sent by the second device to obtain the fourth path loss;

[0682] Wherein, the first path loss includes the third path loss and the fourth path loss.

[0683] 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 transmit power control device 1300 further includes:

[0684] A backscattering module, configured to backscatter a reference signal sent by a third device, where the third device is the receiving end device of the first signal;

[0685] A fifth receiving module, configured to receive fourth information or a first signaling from the third device;

[0686] Wherein, the fourth information includes the first path loss, or, the fourth information includes the first path loss and a partial path loss compensation factor; the first signaling is used to indicate a bias value of closed-loop power control.

[0687] In some embodiments, when the transmitting end of the first signal is the first communication module, the transmit power control device 1300 further includes:

[0688] A third measurement module, configured to measure a reference signal sent by the second device to obtain the first path loss.

[0689] In some embodiments, when the transmitting end of the first signal is the first communication module, the transmit power control device 1300 further includes:

[0690] A first control module, configured to control the first communication module to send a reference signal;

[0691] A second control module, configured to control the second communication module to backscatter the reference signal sent by the first communication module;

[0692] A sixth receiving module, configured to receive fourth information or a first signaling from a third device, where the third device is the receiving end device of the first signal;

[0693] Wherein, the fourth information includes the first path loss, or, the fourth information includes the first path loss and a partial path loss compensation factor; the first signaling is used to indicate a bias value of closed-loop power control.

[0694] In some embodiments, the first path loss is measured by the first communication module or the second communication module.

[0695] In some embodiments, when the first path loss is measured by the first communication module, the transmit power control device 1300 further includes:

[0696] A third determination module, configured to determine a path loss offset value according to a difference between a reference signal measured by the first communication module and the first signal;

[0697] A fourth determination module, configured to determine the second path loss according to the first path loss and the path loss offset value.

[0698] In some embodiments, the second path loss includes a target modulation loss PL Mod , and the target modulation loss PL Mod includes the modulation loss caused by the second communication module backscattering a signal.

[0699] The transmission power control device 1300 provided in the embodiments of the present application can implement each process in the method embodiments on the first device side and achieve the same technical effects. To avoid repetition, details are not described here again.

[0700] Referring to Figure 14 , the embodiments of the present application further provide another transmission power control device 1400, which is applied to a fourth device. As Figure 14 shown, the transmission power control device 1400 includes:

[0701] A second execution module 1401, configured to execute a second operation, where the second operation includes at least one of the following:

[0702] Sending first information to a first device;

[0703] Sending second information to the first device;

[0704] Sending a third power control offset value to a second device, where the third power control offset value is used to adjust the transmission power of the second device for a second signal to a first target transmission power;

[0705] Wherein, the first device includes a first communication module and a second communication module, the second communication module is a very low power consumption communication module, and the second information includes relevant information for determining the first information;

[0706] The first information includes at least one of the following:

[0707] The second target transmission power of the second communication module, where the second target transmission power is the target transmission power for the second communication module to send a first signal;

[0708] A first power control offset value, where the first power control offset value is used to adjust the transmission power of the second communication module for the first signal to a second target transmission power;

[0709] A second power control bias value, which is used to adjust the transmission power of the first communication module for the second signal to a first target transmission power;

[0710] Wherein, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by backscattering the second signal based on the second communication module.

[0711] In some embodiments, the second information includes at least one of the following:

[0712] A third target transmission power and a first adjustment amount of the first communication module, and the second target transmission power is determined based on the third target transmission power and the first adjustment amount;

[0713] A first parameter and a second adjustment amount of the first communication module, and a second parameter is determined based on the first parameter and the second adjustment amount;

[0714] A second parameter;

[0715] Wherein, the first parameter includes a parameter for determining the third target transmission power; the second parameter includes a parameter for determining the second target transmission power.

[0716] 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:

[0717] A target receiving power, a first path loss, a second path loss, a maximum transmission power, a type of the first signal, a time length of a symbol in the first signal, a frequency domain width of a symbol in the first signal, a bias value of closed-loop power control, an RB number of an occupied bandwidth of the first signal, a number of subcarriers included in each RB of the first signal, a number of bits carried by each symbol in the first signal on average, a partial path loss compensation factor;

[0718] Wherein, the first path loss is a power loss of a transmission path of the first signal and the second signal measured based on a reference signal; the second path loss is a path loss that needs to be compensated for the first signal and the second signal during power control.

[0719] In some embodiments, when the first information includes the second target transmission power, the transmission power control device 1400 further includes:

[0720] A second receiving module, configured to receive first capability information from the first device, where the first capability information is related to power control of at least one of the first communication module and the second communication module;

[0721] A third transmission module, configured to transmit 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 transmission power.

[0722] In some embodiments, when the first information includes the second target transmission power, the transmission power control device 1400 further includes:

[0723] A third reception 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;

[0724] A fourth transmission module, configured to transmit a third power control offset value to the second device according to the second capability information and the second target transmission power; wherein, the third power control offset value is used to adjust the transmission power of the second device for the second signal to a first target transmission power.

[0725] In some embodiments, the first capability information includes at least one of the following:

[0726] First indication information, where the first indication information is used to indicate whether the first communication module can perform power control;

[0727] The minimum transmission power of the first communication module;

[0728] The maximum transmission power of the first communication module;

[0729] The set of available powers of the first communication module;

[0730] Second indication information, where the second indication information is used to indicate whether the second communication module can perform power control;

[0731] The maximum power attenuation capability of the second communication module;

[0732] The maximum power amplification capability of the second communication module;

[0733] The set of power attenuation values of the second communication module;

[0734] The set of power amplification values of the second communication module.

[0735] In some embodiments, the second capability information includes at least one of the following:

[0736] The minimum transmission power of the second device;

[0737] The maximum transmission power of the second device;

[0738] The set of available powers of the second device.

[0739] In some embodiments, the transmit power control device 1400 further includes:

[0740] A fourth receiving module, configured to receive third information from the first device;

[0741] A second determining module, configured to determine the second target transmit power according to the third information;

[0742] Wherein, the third information includes at least one of the following:

[0743] The second target transmit power;

[0744] A second parameter, where the second parameter includes a parameter for determining the second target transmit power;

[0745] A fourth power control bias value, where the fourth power bias value is a power bias value between the second target transmit power and the current transmit power of the sending end of the second signal;

[0746] A first transmit power, where the first transmit power is the transmit power obtained by subtracting a second path loss from the second target transmit power, and the second path loss is a path loss that needs to be compensated for the first signal and the second signal during the power control process.

[0747] The transmit power control device 1400 provided by the embodiments of the present application can implement each process in the method embodiment on the fourth device side and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0748] Optionally, as Figure 15 shown, the embodiments of the present application further provide a communication device 1500, including a processor 1501 and a memory 1502. A program or instruction that can run on the processor 1501 is stored on the memory 1502. For example, when the communication device 1500 is used as the first device, when the program or instruction is executed by the processor 1501, it implements each step of the foregoing method embodiment on the first device side and can achieve the same technical effect; when the communication device 1500 is used as the fourth device, when the program or instruction is executed by the processor 1501, it implements each step of the foregoing method embodiment on the fourth device side and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0749] The embodiments of the present application further provide a communication device, including a processor and a communication interface.

[0750] When the communication device is the first device, the processor is configured to obtain first information and perform a first operation according to the first information;

[0751] Wherein, the first information includes at least one of the following:

[0752] The second target transmission power of the second communication module;

[0753] The first power control bias value;

[0754] The second power control bias value;

[0755] The first operation includes at least one of the following:

[0756] Controlling the second communication module to transmit a first signal according to the second target transmission power;

[0757] Controlling the second communication module to apply the first power control bias value to adjust the transmission power of the first signal to the second target transmission power;

[0758] Controlling the first communication module to apply the second power control bias value to adjust the transmission power of the second signal to the first target transmission power;

[0759] Sending a third power control bias value to a second device, where the third power control bias value is used to adjust the transmission power of the second signal of the second device to the first target transmission power;

[0760] Wherein, the first device includes a first communication module and a second communication module, the second communication module is a very low power consumption communication module, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by backscattering the second signal by the second communication module.

[0761] When the communication device is a fourth device, the communication interface is used to perform a second operation, and the second operation includes at least one of the following:

[0762] Sending the first information to the first device;

[0763] Sending the second information to the first device;

[0764] Sending a third power control bias value to a second device, where the third power control bias value is used to adjust the transmission power of the second signal of the second device to the first target transmission power;

[0765] Wherein, the first device includes a first communication module and a second communication module, the second communication module is a very low power consumption communication module, and the second information includes relevant information for determining the first information;

[0766] The first information includes at least one of the following:

[0767] The second target transmission power of the second communication module, where the second target transmission power is the target transmission power for the second communication module to send a first signal;

[0768] A first power control bias value, which is used to adjust the transmission power of the second communication module for the first signal to the second target transmission power;

[0769] A second power control bias value, which is used to adjust the transmission power of the first communication module for the second signal to the first target transmission power;

[0770] Wherein, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by backscattering the second signal by the second communication module.

[0771] This embodiment of the communication device corresponds to the foregoing embodiments of the transmission power control methods on the first device side and the fourth device side. Each implementation process and implementation manner of the foregoing method embodiments can be applied to this embodiment of the communication device and can achieve the same technical effects.

[0772] In some embodiments, Figure 16 It is a schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0773] The terminal 1600 includes but is not limited to at least some components such as 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 a processor 1610.

[0774] Those skilled in the art can understand that the terminal 1600 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 1610 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 16 The terminal structure shown does not limit 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 elaborated here.

[0775] It should be understood that in the embodiments of the present application, the input unit 1604 may include a Graphics Processing Unit (GPU) 16041 and a microphone 16042. The graphics processor 16041 processes the image data of still pictures or videos obtained by an image capturing 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, for example, a liquid crystal display, an organic light emitting diode, etc. The user input unit 1607 includes at least one of a touch panel 16071 and other input devices 16072. The touch panel 16071 is also referred to as a touch screen. The touch panel 16071 may include two parts: a touch detection device and a touch controller. The 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, a joystick, which will not be elaborated here.

[0776] In the embodiments of the present application, after receiving downlink data from a network side device, the radio frequency unit 1601 may transmit it to the processor 1610 for processing; in addition, the radio frequency unit 1601 may send uplink data to the network side device. Generally, the radio frequency unit 1601 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0777] The memory 1609 can be used to store software programs or instructions and various data. The memory 1609 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1609 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 1609 in the embodiments of the present application includes but is not limited to these and any other suitable types of memories.

[0778] The processor 1610 may include one or more processing units; optionally, the processor 1610 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 1610 either.

[0779] Among them, the terminal 1600 is used as the first device.

[0780] The processor 1610 is configured to obtain first information. The first device includes a first communication module and a second communication module, and the second communication module is a very low-power communication module;

[0781] The processor 1610 is further configured to perform a first operation according to the first information;

[0782] Wherein, the first information includes at least one of the following:

[0783] The second target transmit power of the second communication module;

[0784] The first power control bias value;

[0785] The second power control bias value;

[0786] The first operation includes at least one of the following:

[0787] Control the second communication module to transmit a first signal according to the second target transmit power;

[0788] Control the second communication module to apply the first power control bias value to adjust the transmit power of the first signal to the second target transmit power;

[0789] Control 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;

[0790] Send a third power control bias value to a second device through the radio frequency unit 1601, where the third power control bias value is used to adjust the transmit power of the second signal of the second device to the first target transmit power;

[0791] Wherein, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by backscattering the second signal by the second communication module.

[0792] In some embodiments, the obtaining of the first information executed by the processor 1610 includes:

[0793] Obtain second information, and determine the first information according to the second information;

[0794] Wherein, the second information includes at least one of the following:

[0795] The third target transmit power and the first adjustment amount of the first communication module, and the second target transmit power is determined based on the third target transmit power and the first adjustment amount;

[0796] The first parameter and the second adjustment amount of the first communication module, and the second parameter is determined based on the first parameter and the second adjustment amount;

[0797] The second parameter;

[0798] The first parameter includes a parameter for determining the third target transmit power; the second parameter includes a parameter for determining the second target transmit power.

[0799] 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:

[0800] 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 included in each RB of the first signal, number of bits averaged by each symbol in the first signal, partial path loss compensation factor;

[0801] Wherein, the first path loss is the power loss of the transmission paths of the first signal and the second signal measured based on a reference signal; 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.

[0802] In some embodiments, when the first information includes the second target transmit power:

[0803] The processor 1610 is further configured 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 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.

[0804] In some embodiments, when the first information includes the second target transmit power, the radio frequency unit 1601 is further configured to:

[0805] Send the first capability information to a fourth device, where the first capability information is related to the power control of at least one of the first communication module and the second communication module;

[0806] Receive at least one of the first power control bias value and the second power control bias value from the fourth device.

[0807] In some embodiments, before the radio frequency unit 1601 executes receiving at least one of the first power control bias value and the second power control bias value from the fourth device, it is further configured to:

[0808] Send third information to the fourth device, where the third information includes at least one of the following:

[0809] The second target transmit power;

[0810] A second parameter, where the second parameter includes a parameter for determining the second target transmit power;

[0811] The fourth power control bias value, where the fourth power bias value is the bias value between the second target transmission power and the current transmission power of the transmitting end of the second signal;

[0812] The first transmission power, where the first transmission power is the transmission power obtained by subtracting the 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.

[0813] In some embodiments, the first capability information includes at least one of the following:

[0814] The first indication information, which is used to indicate whether the first communication module can perform power control;

[0815] The minimum transmission power of the first communication module;

[0816] The maximum transmission power of the first communication module;

[0817] The set of available powers of the first communication module;

[0818] The second indication information, which is used to indicate whether the second communication module can perform power control;

[0819] The maximum power attenuation capability of the second communication module;

[0820] The maximum power amplification capability of the second communication module;

[0821] The set of power attenuation values of the second communication module;

[0822] The set of power amplification values of the second communication module.

[0823] 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:

[0824] Measure the reference signal sent by the third device to obtain the third path loss, where the third device is the receiving end device of the first signal;

[0825] Measure the reference signal sent by the second device to obtain the fourth path loss;

[0826] Wherein, the first path loss includes the third path loss and the fourth path loss.

[0827] 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 for the second communication module, the radio frequency unit 1601 is further configured to:

[0828] Backscatter the reference signal sent by the third device, where the third device is the receiving end device of the first signal;

[0829] Receive the fourth information or the first signaling from the third device;

[0830] Wherein, the fourth information includes the first path loss, or the fourth information includes the first path loss and a partial path loss compensation factor; the first signaling is used to indicate the bias value of closed-loop power control.

[0831] In some embodiments, when the transmitting end of the first signal is the first communication module, the radio frequency unit 1601 is further configured to:

[0832] The first device measures the reference signal sent by the second device to obtain the first path loss.

[0833] In some embodiments, when the transmitting end of the first signal is the first communication module:

[0834] 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;

[0835] The radio frequency unit 1601 is further configured to receive the fourth information or the first signaling from the third device, where the third device is the receiving end device of the first signal;

[0836] Wherein, the fourth information includes the first path loss, or the fourth information includes the first path loss and a partial path loss compensation factor; the first signaling is used to indicate the bias value of closed-loop power control.

[0837] In some embodiments, the first path loss is measured by the first communication module or the second communication module.

[0838] In some embodiments, when the first path loss is measured by the first communication module, the processor 1610 is further configured to:

[0839] Determine a path loss bias value according to the difference between the reference signal measured by the first communication module and the first signal;

[0840] Determine the second path loss according to the first path loss and the path loss bias value.

[0841] In some embodiments, the second path loss includes a target modulation loss PL Mod , and the target modulation loss PL Mod includes the modulation loss caused by the backscattering of signals by the second communication module.

[0842] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment may refer to the relevant descriptions of the foregoing method embodiments on the first device side, and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[0843] The embodiment of the present application further provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run programs or instructions to implement the steps of the foregoing method embodiments on the first device side or the fourth device side. The embodiment of this network-side device corresponds to the foregoing method embodiments on the first device side or the fourth device side. The various implementation processes and implementation manners of the foregoing method embodiments can all be applied to the embodiment of this network-side device, and can achieve the same technical effects.

[0844] In one embodiment, as Figure 17 shown, the network-side device 1700 includes: The network-side device 17000 includes: an antenna 1701, a radio frequency device 1702, a baseband device 1703, a processor 1704, and a memory 1705. The antenna 1701 is connected to the radio frequency device 1702. In the uplink direction, the radio frequency device 1702 receives information through the antenna 1701 and sends the received information to the baseband device 1703 for processing. In the downlink direction, the baseband device 1703 processes the information to be sent and sends it to the radio frequency device 1702. After processing the received information, the radio frequency device 1702 sends it out through the antenna 1701.

[0845] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 1703, and the baseband device 1703 includes a baseband processor.

[0846] The baseband device 1703 may include, for example, at least one baseband board, and multiple chips are arranged on the baseband board. As Figure 17 shown, one of the chips is, for example, a baseband processor, which is connected to the memory 1705 through a bus interface to call the programs in the memory 1705 and execute the network device operations shown in the above method embodiments.

[0847] The network-side device may further include a network interface 1706, and this interface is, for example, a Common Public Radio Interface (CPRI).

[0848] In some embodiments, the network-side device 1700 of the embodiments of the present application further includes: instructions or programs stored on 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 performed by the modules shown in FIG Figure 13 or Figure 14 and achieve the same technical effects. To avoid repetition, they are not described herein again.

[0849] In another embodiment, the embodiments of the present application further provide a network-side device. As Figure 18 shown, the network-side device 1800 includes: a processor 1801, a network interface 1802, and a memory 1803. Among them, the network interface 1802 is, for example, a Common Public Radio Interface (CPRI).

[0850] Optionally, the network-side device 1800 of the embodiments of the present application further includes: instructions or programs stored on the memory 1803 and executable on the processor 1801. The processor 1801 calls the instructions or programs in the memory 1803 to execute Figure 14 the methods performed by the modules shown and achieve the same technical effects. To avoid repetition, they are not described herein again.

[0851] The embodiments of the present application further provide a readable storage medium. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, they implement each process of the foregoing first device-side method embodiment or fourth device-side method embodiment and can achieve the same technical effects. To avoid repetition, they are not described herein again.

[0852] Wherein, the processor is the processor in the terminal described in the foregoing embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks, or optical discs, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0853] The embodiments of the present application further provide a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement each process of the foregoing first device-side method embodiment or fourth device-side method embodiment and can achieve the same technical effects. To avoid repetition, they are not described herein again.

[0854] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip, etc.

[0855] Another embodiment of the present application provides a computer program / program product. The computer program / program product is stored in a storage medium and is executed by at least one processor to implement the various processes of the foregoing first device-side method embodiment or the fourth device-side method embodiment, and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0856] Another embodiment of the present application provides a wireless communication system, including a first device and a fourth device. The first device is used to execute the steps of the foregoing first device-side method embodiment, and the fourth device is used to execute the steps of the foregoing fourth device-side method embodiment, and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0857] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the element. In addition, it should be pointed out that the methods and devices in the embodiments of the present application are not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0858] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing a terminal or a network-side device to execute the methods described in the various embodiments of the present application.

[0859] The embodiments of the present application have been described above with reference to the drawings, but the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the purpose of the present application and the scope protected by the claims. These embodiments are all within the protection scope of the present application.

Claims

1. A transmission power control method, characterized in that, it includes: The first device obtains first information, where the first device includes a first communication module and a second communication module, and the second communication module is a very low power consumption communication module; The first device performs a first operation according to the first information; Wherein, the first information includes at least one of the following: The second target transmission power of the second communication module; The first power control offset value; The second power control offset 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 offset value to adjust the transmission power of the first signal to the second target transmission power; Controlling the first communication module to apply the second power control offset value to adjust the transmission power of the second signal to the first target transmission power; Sending a third power control offset value to a second device, where the third power control offset value is used to adjust the transmission power of the second signal of the second device to the first target transmission power; Wherein, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by backscattering the second signal by the second communication module.

2. The method according to claim 1, characterized in that, The first device obtains first information, including: The first device obtains second information and determines the first information according to the second information; Wherein, the second information includes at least one of the following: The third target transmission power and the first adjustment amount of the first communication module, and the second target transmission power is determined based on the third target transmission power and the first adjustment amount; The first parameter and the second adjustment amount of the first communication module, and the second parameter is determined based on the first parameter and the second adjustment amount; The second parameter; The first parameter includes a parameter for determining the third target transmission power; the second parameter includes a parameter for determining the second target transmission power.

3. The method according to claim 2, characterized in that, 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 receiving power, first path loss, second path loss, maximum transmission power, type of the first signal, time length of one symbol in the first signal, frequency domain width of one symbol in the first signal, offset value of closed-loop power control, number of RBs of the occupied bandwidth of the first signal, number of subcarriers included in each RB of the first signal, number of bits carried by each symbol in the first signal, partial path loss compensation factor; Wherein, the first path loss is the power loss of the transmission path of the first signal and the second signal measured based on a reference signal; 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, characterized in that, When the first information includes the second target transmission 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 according to the second target transmission power and the first capability information, where 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, characterized in that When the first information includes the second target transmission power, the method further includes: The first device sends the first capability information to the fourth device, where the first capability information is related to the power control of at least one of the first communication module and the second communication module; The first device receives at least one of the first power control bias value and the second power control bias value from the fourth device.

6. The method according to claim 5, characterized in that Before the first device receives at least one of the first power control bias value and the second power control bias value from the fourth device, the method further includes: The first device sends third information to the fourth device, and the third information includes at least one of the following: The second target transmission power; A second parameter, where the second parameter includes a parameter for determining the second target transmission power; A fourth power control bias value, where the fourth bias value is the bias value between the second target transmission power and the current transmission power of the sending end of the second signal; A first transmission power, where the first transmission power is the transmission power obtained by subtracting the 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, characterized in that The first capability information includes at least one of the following: A first indication information for indicating 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 set of available powers of the first communication module; A second indication information for indicating 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; The set of power attenuation values of the second communication module; The set of power amplification values of the second communication module.

8. The method according to claim 3, characterized in that When the sending 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: The first device measures the reference signal sent by the third device to obtain a third path loss, where the third device is the receiving end device of the first signal; The first device measures the reference signal sent by the second device to obtain a fourth path loss; Wherein, the first path loss includes the third path loss and the fourth path loss.

9. The method according to claim 3, wherein, 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 for the second communication module, the method further includes: The first device backscatters the reference signal sent by the third device, where the third device is the receiving end device of the first signal; The first device receives the fourth information or the first signaling from the third device; Wherein, the fourth information includes the first path loss, or the fourth information includes the first path loss and part of the path loss compensation factor; the first signaling is used to indicate the bias value of the closed-loop power control.

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

11. The method according to claim 3, wherein, when the transmitting 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 the fourth information or the first signaling from the third device, where the third device is the receiving end device of the first signal; Wherein, the fourth information includes the first path loss, or the fourth information includes the first path loss and part of the path loss compensation factor; the first signaling is used to indicate the bias value of the 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, when the first path loss is measured by the first communication module, the method further includes: The first device determines the path loss bias value according to the difference between the 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 bias 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 , and the target modulation loss PL Mod includes the modulation loss caused by the backscattering of the signal by the second communication module.

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

16. The method according to claim 15, characterized in that the second information includes at least one of the following: A third target transmission power and a first adjustment amount of the first communication module, where the second target transmission power is determined based on the third target transmission power and the first adjustment amount; A first parameter and a second adjustment amount of the first communication module, where a second parameter is determined based on the first parameter and the second adjustment amount; A second parameter; Wherein, the first parameter includes a parameter for determining the third target transmission power; the second parameter includes a parameter for determining the second target transmission power.

17. The method according to claim 16, characterized in that 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 receive power, first path loss, second path loss, maximum transmit power, type of the first signal, time length of one symbol in the first signal, frequency domain width of one 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 included 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; Wherein, the first path loss is the power loss of the transmission paths of the first signal and the second signal measured based on a reference signal; 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, characterized in that when the first information includes the second target transmission power, the method further includes: The fourth device receives first capability information from the first device, where 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 bias value and the second power control bias value to the first device according to the first capability information and the second target transmission power.

19. The method according to claim 18, characterized in that when the first information includes the second target transmission power, the method further includes: The fourth device receives second capability information from the second device, where the second capability information is related to the power control of the second device; 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; wherein, the third power control offset value is used to adjust the transmit power of the second device for the second signal to a 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, which is used to indicate whether the first communication module can perform power control; The minimum transmit power of the first communication module; The maximum transmit power of the first communication module; The set of available powers of the first communication module; Second indication information, which 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; The set of power attenuation values of the second communication module; The set of power amplification values of the second communication module.

21. The method according to claim 19, wherein, The second capability information includes at least one of the following: The minimum transmit power of the second device; The maximum transmit power of the second device; The set of available powers 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; wherein, the third information includes at least one of the following: The second target transmit power; A second parameter, where the second parameter includes a parameter for determining the second target transmit power; A fourth power control offset value, where the fourth power offset value is the power offset value between the second target transmit power and the current transmit power of the sending end of the second signal; A first transmit power, where the first transmit power is the transmit power after subtracting a second path loss from the second target transmit 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 transmit power control device, wherein, Applied to the first device, the device includes: A first acquisition module, configured to acquire first information. The first device includes a first communication module and a second communication module, and the second communication module is a very low power consumption communication module; A first execution module, configured to perform a first operation according to the first information; wherein, the first information includes at least one of the following: The second target transmit power of the second communication module; A first power control offset value; A second power control offset 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 transmit power; Control the second communication module to adjust the transmission power of the first signal to a second target transmission power by applying the first power control bias value; Control the first communication module to adjust the transmission power of the second signal to a first target transmission power by applying the second power control bias value; Send a third power control bias value to a second device, where the third power control bias value is used to adjust the transmission power of the second signal by the second device to a first target transmission power; Wherein, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by backscattering the second signal by the second communication module.

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

25. The apparatus according to claim 23 or 24, wherein, When the first information includes the second target transmission power, the apparatus further includes: A first determination module, configured 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 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.

26. The apparatus according to claim 23 or 24, wherein, When the first information includes the second target transmission 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 the power control of at least one of the first communication module and the second communication module; A first receiving module, configured to receive at least one of the first power control bias value and the second power control bias value from the fourth device.

27. The apparatus according to claim 26, wherein, The apparatus further includes: A second sending module, configured to send third information to the fourth device, where the third information includes at least one of the following: The second target transmission power; The second parameter, where the second parameter includes a parameter for determining the second target transmission power; A fourth power control bias value, where the fourth bias value is the bias value between the second target transmission power and the current transmission power of the sending end of the second signal; The first transmission power, where the first transmission power is the transmission power obtained by subtracting the 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, characterized in that, it is applied to a fourth device, and the device includes: A second execution module for performing 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 a first device; Sending a third power control bias value to a second device, where the third power control bias value is used to adjust the transmission power of the second signal by the second device to a first target transmission power; Wherein, the first device includes a first communication module and a second communication module, the second communication module is a very 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: The second target transmission power of the second communication module, where the second target transmission power is the target transmission power for the second communication module to send a first signal; A first power control bias value, where the first power control bias value is used to adjust the transmission power of the first signal by the second communication module to a second target transmission power; A second power control bias value, where the second power control bias value is used to adjust the transmission power of the second signal by the first communication module to a first target transmission power; Wherein, the sending end of the second signal is the second device or the first communication module, and the first signal is generated by backscattering the second signal by the second communication module.

29. The device according to claim 28, characterized in that, The second information includes at least one of the following: The third target transmission power and a first adjustment amount of the first communication module, and the second target transmission power is determined based on the third target transmission power and the first adjustment amount; A first parameter and a second adjustment amount of the first communication module, and a second parameter is determined based on the first parameter and the second adjustment amount; A second parameter; Wherein, the first parameter includes a parameter for determining the third target transmission power; the second parameter includes a parameter for determining the second target transmission power.

30. The device according to claim 28 or 29, characterized in that, When the first information includes the second target transmission power, the device further includes: A second receiving module for receiving first capability information from the first device, where the first capability information is related to the power control of at least one of the first communication module and the second communication module; A third sending module for sending at least one of the first power control bias value and the second power control bias value to the first device according to the first capability information and the second target transmission power.

31. The device according to claim 30, characterized in that, When the first information includes the second target transmission power, the device 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 transmitting module, configured to send a third power control offset value to the second device according to 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 a first target transmit power.

32. The apparatus according to claim 31, wherein, the apparatus further comprises: 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; wherein, the third information includes at least one of the following: the second target transmit power; a second parameter, where the second parameter includes a parameter for determining the second target transmit power; 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 sending end of the second signal; a first transmit power, where the first transmit power is the transmit power obtained by subtracting a second path loss from the second target transmit 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, wherein, it includes a processor and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, it implements the steps of the transmit power control method according to any one of claims 1 to 14, or implements the steps of the transmit power control method according to any one of claims 15 to 22.

34. A readable storage medium, wherein, the readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, it implements the steps of the transmit power control method according to any one of claims 1 to 14, or implements the steps of the transmit power control method according to any one of claims 15 to 22.

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