Power control method and communication device

Abstract

The embodiment of the invention provides a power control method and a communication device, which can realize power control of terminal equipment in a passive IoT (Internet of Things) communication system under a UE (User Equipment) auxiliary architecture. The method comprises: a first device sends a first carrier signal to a second device, and receives first information from a network device, the first information being used for indicating the sending power of a second carrier signal, the first information having an association relationship with the receiving power of the first signal, the first signal having an association relationship with the first carrier signal, and the second carrier signal having an association relationship with the receiving power of the second carrier signal; and transmitting the second carrier signal to the second device according to the transmission power of the second carrier signal.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and in particular to a power control method and a communication device. Background Art

[0002] Ambient internet of things (A-IoT) devices are a type of ultra-low power IoT devices, mainly divided into active and passive types. Among them, active A-IoT is an active tag or active terminal device that can use the energy stored in its own energy storage module to complete the transmission of wireless communication signals, while passive A-IoT (also called passive tag) mainly relies on obtaining energy from external radio frequency signals and communicating through backscattered radio frequency signals, ultimately achieving ultra-low power consumption or even zero power consumption.

[0003] In the passive IoT network architecture of the terminal device auxiliary architecture, the link between the terminal device and the passive A-IoT is a passive link (passive link), which requires the terminal device to transmit an excitation or carrier signal (carrying downlink data), and the passive A-IoT modulates the received excitation or carrier signal and reflects the modulated signal to the terminal device or network device. For the passive A-IoT, it needs to rely on the carrier signal sent by the terminal device to send uplink data to the network device, but it only includes the function of absorbing / reflecting signals, and cannot actively send radio frequency signals by itself, and does not have the ability to measure any signal quality such as reference signal received power (RSRP). Therefore, the passive A-IoT cannot feedback RSRP or even received signal strength indicator (RSSI) to the network side like traditional terminal devices, and thus cannot adjust the transmission power of the terminal device. Summary of the invention

[0004] The embodiments of the present application provide a power control method and a communication device, which can implement power adjustment of terminal devices in a passive IoT network architecture of a terminal device auxiliary architecture.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] In a first aspect, a power control method is provided, which can be executed by a first device, or by a component of the first device, such as a processor, a chip, or a chip system of the first device, or by a logic module or software that can realize all or part of the functions of the first device. The following is an explanation of the method being executed by the first device as an example. The method includes: a first device sends a first carrier signal to a second device. The first device receives first information from a network device. The first information is used to indicate the transmission power of the second carrier signal, the first information is associated with the receiving power of the first signal, and the first signal is associated with the first carrier signal. The first device sends a second carrier signal to the second device according to the transmission power of the second carrier signal.

[0007] Based on the power control method, the first device receives first information from the network device for indicating the power of the carrier signal (such as the second carrier signal) to be sent next time, the first information is related to the received power of the first signal, and the first signal is related to the carrier signal (such as the first carrier signal) currently sent by the first device, so that the first device can control the power of the carrier signal to be sent next time according to the first information. Thus, the network device, the first device and the second device form a closed loop to control the power of the carrier signal sent by the first device, which can effectively reduce neighboring interference and improve communication reliability.

[0008] In a possible design, the first signal is associated with the first carrier signal, which may include: the first signal is determined by the second device reflecting the received first carrier signal. In the embodiment of the present application, reflection can be understood as modulating the received first carrier signal before sending it.

[0009] In a possible design scheme, the first information is used to indicate the transmission power of the second carrier signal, and may include: the first information is used to indicate at least one of a first path loss or a power adjustment amount or a power value.

[0010] In one possible design, the first path loss may include a path loss between the first device and the second device and a path loss between the second device and the network device. In an embodiment of the present application, the first path loss may be determined by comparing a power change between a transmit power of the first carrier signal and a receive power of the first signal.

[0011] In one possible design scheme, the first information may also be associated with at least one of the following: the bandwidth of the first carrier signal, the bandwidth of the second carrier signal, the bandwidth of the first signal, or the bandwidth of the second signal, wherein the second signal is determined by the second device reflecting the received second carrier signal.

[0012] In a possible design solution, the bandwidth of the first signal may be the same as the bandwidth of the first carrier signal.

[0013] In a possible design scheme, the method provided in the embodiment of the present application may further include: the first device receives a reference signal from the network device. The first device determines the transmission power of the first carrier signal according to the received power of the reference signal. The first device sends the first carrier signal to the second device according to the transmission power of the first carrier signal. Based on this design scheme, when the network device, the first device, and the second device have not yet formed a closed-loop communication and are in an open-loop state, the power of the carrier signal sent by the first device can be determined based on the received power of the reference signal sent by the network device, thereby realizing subsequent closed-loop power control.

[0014] In a second aspect, a power control method is provided, which can be executed by a network device, or by a component of the network device, such as a processor, a chip, or a chip system of the network device, or by a logic module or software that can realize all or part of the functions of the network device. The following is an example of the method being executed by a network device. The method includes: the network device receives a first signal from a second device. The network device measures the first signal and determines the received power of the first signal. The network device sends first information to the first device, the first information has an associated relationship with the received power of the first signal, and the first information is used to indicate the transmit power of the second carrier signal.

[0015] In a possible design scheme, the first information is used to indicate the transmission power of the second carrier signal, including: the first information is used to indicate at least one of a first path loss or a power adjustment amount or a power value.

[0016] In one possible design scheme, the first path loss may include a path loss between the first device and the second device and a path loss between the second device and a network device.

[0017] In one possible design scheme, the first information may also be associated with at least one of the following: the bandwidth of the first carrier signal, the bandwidth of the second carrier signal, the bandwidth of the first signal, or the bandwidth of the second signal, wherein the second signal is determined by the second device reflecting the received second carrier signal.

[0018] In a possible design solution, the bandwidth of the first signal may be the same as the bandwidth of the first carrier signal.

[0019] In a third aspect, a power control method is provided, which can be performed by a second device, or by a component of the second device, such as a processor, a chip, or a chip system of the second device, or by a logic module or software that can implement all or part of the functions of the second device. The following is an example of the method being performed by the second device. The method includes: the second device receives a first carrier signal from the first device. The second device sends a first signal to a network device, and the first signal has an associated relationship with the first carrier signal.

[0020] In a possible design scheme, the first signal is associated with the first carrier signal, including: the first signal is determined by the second device reflecting the received first carrier signal.

[0021] In a possible design solution, the bandwidth of the first signal may be the same as the bandwidth of the first carrier signal.

[0022] In a fourth aspect, a power control method is provided. The method includes: a second device receives a first carrier signal from a first device, and sends a first signal to a network device, where the first signal is associated with the first carrier signal. The network device measures the first signal to determine the received power of the first signal, where the received power of the first signal is associated with first information, and the first information is used to indicate the transmit power of the second carrier signal. The network device sends the first information to the first device. The first device receives the first information from the network device, and sends a second carrier signal to the second device according to the transmit power of the second carrier signal.

[0023] In a possible design scheme, the first signal is associated with the first carrier signal, including: the first signal is determined by the second device reflecting the received first carrier signal.

[0024] In a possible design scheme, the first information is used to indicate the transmission power of the second carrier signal, including: the first information is used to indicate at least one of a first path loss or a power adjustment amount or a power value.

[0025] In one possible design scheme, the first path loss may include a path loss between the first device and the second device and a path loss between the second device and a network device.

[0026] In one possible design scheme, the first information may also be associated with at least one of the following: the bandwidth of the first carrier signal, the bandwidth of the second carrier signal, the bandwidth of the first signal, or the bandwidth of the second signal, wherein the second signal is determined by the second device reflecting the received second carrier signal.

[0027] In a possible design solution, the bandwidth of the first signal may be the same as the bandwidth of the first carrier signal.

[0028] In a possible design scheme, the method provided in the embodiment of the present application may further include: the first device receives a reference signal from a network device. The first device determines the transmission power of the first carrier signal according to the reception power of the reference signal. The first device sends the first carrier signal to the second device according to the transmission power of the first carrier signal.

[0029] Among them, the technical effects of the methods described in any one of the second to fourth aspects can refer to the technical effects of the methods described in the first aspect, and will not be repeated here.

[0030] In a fifth aspect, a communication device is provided for implementing the various methods described above. The communication device may be the first device in the first aspect described above, or a device including the first device described above, or a device included in the first device described above, such as a chip. The communication device includes a corresponding module, unit, or means for implementing the method described in the first aspect described above, and the module, unit, or means may be implemented by hardware, software, or by executing corresponding software implementations by hardware. The hardware or software includes one or more modules or units corresponding to the above functions.

[0031] In some possible designs, the communication device includes: a processing module and a transceiver module. The processing module is used to control the transceiver module to send a first carrier signal to a second device. The processing module is also used to control the transceiver module to receive first information from a network device, the first information is used to indicate the transmission power of the second carrier signal, the first information is associated with the receiving power of the first signal, and the first signal is associated with the first carrier signal. The processing module is also used to control the transceiver module to send a second carrier signal to the second device according to the transmission power of the second carrier signal. For a more detailed description of the communication device, please refer to the description of the relevant method in the first aspect.

[0032] In a sixth aspect, a communication device is provided for implementing the above-mentioned various methods. The communication device may be the network device in the above-mentioned second aspect, or a device including the above-mentioned network device, or a device included in the above-mentioned network device, such as a chip. The communication device includes a corresponding module, unit, or means for implementing the method described in the above-mentioned second aspect, and the module, unit, or means may be implemented by hardware, software, or by hardware executing the corresponding software implementation. The hardware or software includes one or more modules or units corresponding to the above-mentioned functions.

[0033] In some possible designs, the communication device includes: a processing module and a transceiver module. The transceiver module is used to receive a first signal from a second device. The processing module is used to measure the first signal and determine the received power of the first signal. The transceiver module is also used to send first information to the first device, the first information is associated with the received power of the first signal, and the first information is used to indicate the transmission power of the second carrier signal. For a more detailed description of the communication device, please refer to the description of the relevant method in the second aspect.

[0034] In the seventh aspect, a communication device is provided for implementing the above-mentioned various methods. The communication device may be the second device in the above-mentioned third aspect, or a device including the above-mentioned second device, or a device included in the above-mentioned second device, such as a chip. The communication device includes a corresponding module, unit, or means for implementing the method described in the above-mentioned third aspect, and the module, unit, or means may be implemented by hardware, software, or by hardware executing the corresponding software implementation. The hardware or software includes one or more modules or units corresponding to the above-mentioned functions.

[0035] In some possible designs, the communication device includes: a processing module and a transceiver module. The processing module is used to control the transceiver module to receive a first carrier signal from the first device. The processing module is also used to control the transceiver module to send a first signal to the network device, and the first signal is associated with the first carrier signal.

[0036] In combination with any one of the fifth to seventh aspects, in a possible design scheme, the transceiver module may include a receiving module and a sending module. The sending module is used to implement the sending function of the communication device described in any one of the fifth to seventh aspects, and the receiving module is used to implement the receiving function of the communication device described in any one of the fifth to seventh aspects.

[0037] In combination with any one of the fifth to seventh aspects, in a possible design scheme, the communication device described in any one of the fifth to seventh aspects may further include a storage module, which stores a program or instruction. When the processing module executes the program or instruction, the communication device described in any one of the fifth to seventh aspects can execute the method described in any one of the first to third aspects.

[0038] In an eighth aspect, a communication device is provided (for example, the communication device may be a chip or a chip system). The communication device includes: a processor, configured to implement the functions involved in any of the above aspects.

[0039] In a possible design, the communication device may further include a memory, which is used to store necessary program instructions and data. A processor is coupled to the memory, and the processor is used to execute a computer program or instruction stored in the memory, so that the communication device executes the method described in any possible implementation of the first to third aspects.

[0040] In a possible design scheme, the communication device described in the eighth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver may be used for the communication device described in the eighth aspect to communicate with other communication devices.

[0041] In one possible design, the processor may be integrated with the memory.

[0042] In some possible designs, when the device is a chip system, it can be composed of a chip or include a chip and other discrete devices.

[0043] In a ninth aspect, the present application provides a communication device, comprising a processor and an interface circuit, the interface circuit being used to receive signals from other communication devices outside the communication device and transmit them to the processor or to send signals from the processor to other communication devices outside the communication device, the processor being used to implement a method as described in any possible implementation method of the first to third aspects through a logic circuit or by executing code instructions.

[0044] It can be understood that when the communication device provided in any one of the eighth aspect or the ninth aspect is a chip, the above-mentioned sending action / function can be understood as output, and the above-mentioned receiving action / function can be understood as input.

[0045] In the tenth aspect, a computer-readable storage medium is provided, in which a computer program or instruction is stored. When the computer-readable storage medium is run on a communication device, the communication device can execute the method described in any one of the first to third aspects above.

[0046] In the eleventh aspect, a computer program product comprising instructions is provided, including computer program codes, which, when executed on a communication device, enable the communication device to execute the method described in any one of the first to third aspects.

[0047] In the twelfth aspect, a communication system is provided, comprising a first device for implementing the method described in the first aspect, a network device for implementing the method described in the second aspect, and a second device for implementing the method described in the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1A schematic diagram of an ASK modulation waveform provided in an embodiment of the present application;

[0049] Figure 2 A schematic diagram of a PUSCH uplink power control scenario provided in an embodiment of the present application;

[0050] Figure 3 A schematic diagram of a sidelink power control scenario provided in an embodiment of the present application;

[0051] Figure 4 A schematic diagram of the architecture of a passive IoT communication system under a UE-assisted architecture provided in an embodiment of the present application;

[0052] Figure 5 A schematic diagram of the architecture of a power control system provided in an embodiment of the present application;

[0053] Figure 6 A schematic diagram of the architecture of a communication system applicable to a power control system provided in an embodiment of the present application;

[0054] Figure 7 A schematic diagram of a power control method provided in an embodiment of the present application;

[0055] Figure 8 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0056] Fig. 9 A schematic diagram of the structure of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0057] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as wireless fidelity (Wi-Fi) systems, vehicle to everything (V2X) communication systems, Internet of Vehicles communication systems, 4th generation (4G) mobile communication systems, such as long term evolution (LTE) systems, worldwide interoperability for microwave access (WiMAX) communication systems, fifth generation (5G) mobile communication systems, such as new radio (NR) systems, and future communication systems, such as sixth generation (6G) mobile communication systems.

[0058] In order to better understand the embodiments of the present application, the following explanations are made before introducing the embodiments of the present application.

[0059] First, in the embodiments of the present application, "used for indication" may include being used for direct indication and being used for indirect indication. When describing that a certain "indication information" is used to indicate A, it may include that the indication information directly indicates A or indirectly indicates A, but it does not mean that the indication information must carry A.

[0060] The information indicated by the indication information is called the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein there is an association between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved with the help of the arrangement order of each piece of information agreed in advance (for example, stipulated by the protocol), thereby reducing the indication overhead to a certain extent. At the same time, the common parts of each piece of information can also be identified and indicated uniformly to reduce the indication overhead caused by indicating the same information separately.

[0061] In addition, the specific indication method may also be various existing indication methods, such as but not limited to the above-mentioned indication methods and various combinations thereof. The specific details of the various indication methods can refer to the prior art and will not be repeated herein. As can be seen from the above, for example, when it is necessary to indicate multiple information of the same type, different indication methods may be used for different information. In the specific implementation process, the desired indication method can be selected according to specific needs. The embodiment of the present application does not limit the selected indication method. In this way, the indication method involved in the embodiment of the present application should be understood to cover various methods that can enable the party to be indicated to obtain the information to be indicated.

[0062] The information to be indicated can be sent as a whole, or divided into multiple sub-information and sent separately, and the sending period and / or sending time of these sub-information can be the same or different. The specific sending method is not limited in this application. Among them, the sending period and / or sending time of these sub-information can be pre-defined, for example, pre-defined according to the protocol, or can be configured by the transmitting device by sending configuration information to the receiving device. Among them, the configuration information can include, for example, but not limited to, one or a combination of at least two of radio resource control (RRC) signaling, medium access control (MAC) layer signaling and physical layer signaling. Among them, MAC layer signaling, for example, includes MAC-control element (CE); physical (PHY) layer signaling, for example, includes downlink control information (DCI).

[0063] Second, in the embodiments of the present application, the first, second and various digital numbers are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application. For example, to distinguish different indication information. For another example, the first network area and the second network area are only used to distinguish different areas, and their order is not limited. Those skilled in the art can understand that the words "first" and "second" do not limit the quantity and execution order, and the words "first" and "second" do not necessarily limit them to be different.

[0064] Third, in the embodiments of the present application, descriptions such as "when...", "in the case of...", "if" and "if" all mean that under certain objective circumstances, the device (such as a terminal device or a network device) will make corresponding processing. It does not limit the time, nor does it require the device (such as a terminal device or a network device) to have a judgment action when implementing it, nor does it mean that there are other limitations.

[0065] Fourth, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0066] Fifth, in the embodiments of the present application, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of multiple items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0067] Related technologies involved in the embodiments of this application.

[0068] 1. Passive A-IoT

[0069] Passive A-IoT is also called passive tag, battery-free terminal / device, battery-free terminal / device, back-reflective terminal / device, backscatter device, passive IoT, etc. Taking into account the low power consumption characteristics, the passive A-IoT receiver does not include high-power, high-precision phase-locked loops (PLL) and other modules. It cannot support coherent demodulation and does not have baseband signal processing capabilities, but supports basic radio frequency (RF) signal absorption and / or reflection capabilities. The passive A-IoT receiver itself cannot actively send RF signals. The terminal device needs to first transmit an excitation or carrier signal (carrying downlink (DL) data), and then the passive A-IoT receiver modulates the received excitation or carrier signal and reflects the modulated signal to the terminal device or network device (carrying uplink (UL) data). For example, a passive A-IoT receiver is a receiver that supports RF on-off keying (OOK) modulation or amplitude-shift keying (ASK) modulation signals, or a backscatter receiver, or a receiver that can absorb / reflect RF signals, or a passive receiver.

[0070] In the embodiments of the present application, the passive A-IoT receiver may also be referred to as a "zero power receiver", "extremely low power receiver", "backscatter receiver", etc., without limitation. The RF signal used for backscattering may also be referred to as an "excitation signal", "carrier signal", "backscatter source signal", etc., without limitation.

[0071] 2. ASK / OOK modulation

[0072] The ASK modulation method adjusts the amplitude of the carrier according to the value of the digital signal, while the frequency and phase of the carrier remain unchanged. Figure 1 As shown, the transmitted digital signal is in binary form consisting of 0 and 1. Compared with the carrier signal (sinusoidal signal f(t) = Asin(2πft+θ)), the modulated signal transmits an amplitude signal when the bit is 1 (keeping the carrier amplitude A unchanged), and transmits another amplitude signal when the bit is 0 (the amplitude becomes 0). Obviously, the ASK modulation method modulates 1 bit of data into a symbol. There are two symbol waveforms corresponding to the modulated signal, and only 1 and 0 data can be transmitted. Among them, 2ASK can also be called OOK.

[0073] 3. Power control (abbreviated as power control)

[0074] During the propagation of the wireless channel, the electromagnetic wave signal sent by the transmitter is affected by path loss (abbreviated as path loss) and shadow fading, and the signal strength will be reduced when it reaches the receiving end. Therefore, when the receiving end is far away, the transmitter needs to adjust the signal transmission power appropriately to compensate for the impact of path loss and shadow fading. Secondly, higher transmission power is conducive to reducing block error rate and packet loss rate, improving transmission reliability, and also helps to apply higher-order modulation and coding schemes (MCS) to improve spectrum efficiency. However, if the transmitter uses too high a transmission power, it will cause strong interference to other transmission processes at the same time, and will also consume more energy, which is not conducive to energy saving (especially not conducive to the battery life of terminal equipment). In summary, it is necessary to control the transmission power of the transmitter to compensate for the impact of path loss and shadow fading, and at the same time suppress the interference between the fifth generation (5th generation, 5G) co-frequency cells to meet network coverage and capacity requirements.

[0075] The following is an explanation of the relevant uplink power control process involved in NR.

[0076] (1) 5G NR uplink power control

[0077] In uplink power control, the base station calculates the UE's transmit power control (TPC) based on power control configuration parameters, feedback information from user equipment (UE), and base station measurement information, and sends it to the UE through downlink control information (DCI) in the physical downlink control channel (PDCCH). The UE maps the TPC to a power adjustment amount and determines the final uplink transmit power based on its own maximum transmit power, path loss, number of resource blocks (RBs), and transmission format.

[0078] On a certain uplink carrier of a certain cell, the actual transmission power of the UE is calculated as follows (if the UE is configured with multiple uplink carriers, each carrier is power controlled according to the following formula): P = min {P CMAX ,{P0(j)+α(j)*PL(q)}+f(l)+10lg(2 u M)+Δ TF}. Among them, P CMAX is the maximum uplink transmit power that matches the power level of the UE; P0(j)+α(j)*PL(q) is open-loop power control, which mainly refers to the power control related to the radio resource control (RRC) high-level parameter configuration and partial path loss compensation, P0(j) is the expected receiving power level of the base station, α is the partial path loss compensation factor, α∈(0,1), PL(q) is the path loss estimation, q is the index of the reference signal used to measure the path loss (each reference signal is associated with a specific q value), and one is selected from a set of path loss estimation values ​​maintained by the UE; f(l) is closed-loop power control, which mainly refers to the power control related to the historical transmission power, and l is the index of the closed-loop power control adjustment amount; 10lg(2 u M)+Δ TF is other adjustment amount, mainly refers to the power adjustment amount related to frequency domain resource allocation and link adaptation, M is the number of RBs allocated for this uplink transmission, u is the subcarrier spacing number, when the subcarrier spacing (SCS) is 15 kilohertz (kHz), u = 0, if the SCS is doubled, the value of u is also increased by 1, that is, the transmission power is also doubled accordingly, and so on, Δ TF It is the adjustment amount related to the uplink transmission format. The power control of each uplink channel or signal is implemented based on the basic framework of the above power control, and the specific details are not expanded.

[0079] (2) NR physical uplink shared channel (PUSCH) uplink power control

[0080] The purpose of PUSCH power control is to reduce interference to neighboring cells and improve cell throughput while ensuring the rate of cell edge users. PUSCH power control is the process by which the base station adjusts the UE uplink transmit power by adjusting TPC.

[0081] When a UE initially accesses or switches to a new cell, it uses open-loop power control to calculate the initial transmit power based on the power parameters configured by the base station and the path loss measured by the UE. Figure 2 As shown in (a) in .

[0082] During the service continuation process, the UE adopts a combination of open-loop power control and closed-loop power control. That is, the UE calculates the transmit power based on the power parameters configured by the base station and the path loss estimation results. It also adaptively adjusts the PUSCH transmit power according to the TPC indicated by the base station to adapt to the changes in the PUSCH channel environment and service load. The specific process is as follows: Figure 2 As shown in (b) in .

[0083] At this time, the PUSCH transmit power calculation formula is: PUSCH (i) = min{P CMAX ,{P0_ PUSCH (j)+α PUSCH (j)*PL(q)}+f(l,i)+10lg(2 u M PUSCH (i))+Δ TF (i)}[dBm], where i is the number of the uplink time slot, P CMAX is the maximum uplink transmit power of the UE, P0_ PUSCH (j)+α PUSCH (j)*PL(q) is the open-loop power control part, where P0_ PUSCH (j) is the per-RB received power level expected by the base station, α PUSCH(j) is the path loss compensation factor, PL(q) is the downlink path loss value estimated by the UE, for example, the base station can currently obtain it through the measurement value and transmit power of the RSRP of the synchronization signal and physical broadcast channel block (SSB), RSRP reflects the reception strength of the reference signal, and the 3rd generation partnership project (3GPP) defines RSRP as the linear average value of the signal power (unit: watt, W) received by the UE on all resource elements (resource element, RE) carrying the reference signal within a certain orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol duration within the measurement bandwidth (generally converted to decibel relative to one milliwatt, dBm) when used), which is used to identify the strength rather than the quality of the cell downlink reference signal, and does not include noise and interference. For details, see the relevant description in the 5.1.1 Reference Signal Received Power (RSRP) section of 3GPP TS 36.214 V17.0.0, or 3GPP TS 38.215V16.5.0, section 5.1.2CSI reference signal received power (CSI-RSRP). f(l,i) is the closed-loop power control part, i.e., the adjustment amount of the UE's PUSCH transmit power. 10lg(2 u M PUSCH (i))+Δ TF (i) is other adjustment quantity, M PUSCH (i) is the number of RBs allocated for this uplink transmission. When the subcarrier spacing (SCS) is 15 kHz, u = 0. If the SCS is doubled, the value of u is also increased by 1, that is, the transmission power is also doubled accordingly. Similarly, Δ TF (i) is the power offset value determined by different MCS levels, and the specific details are not repeated here.

[0084] (3) Narrowband Internet of Things (NB-IoT) narrowband physical random access channel (NPRACH) uplink power control

[0085] NPRACH refers to the preamble used to transmit the random access process. The transmission power of NPUSCH sent on the NB-IoT uplink slot i in the serving cell c is Among them, P CMAX,c (i) is the maximum transmit power of the UE configured on the NB-IoT uplink slot i of the serving cell c; P 0PUSCH , c (j) is the expected receiving power of the serving cell c; M NPUSCH,c The value of (i) is related to the bandwidth of the resource unit (RU) and the subcarrier spacing. If the subcarrier spacing is 3.75kHz, then M NPUSCH,c (i) = 1 / 4, if the subcarrier spacing is 15kHz, then M NPUSCH,c (i)∈{1,3,6,12}; α c (j) is the path loss compensation factor, which is between 0 and 1; PL c is the estimated value of the downlink path loss of the UE for the serving cell c, in decibels (dB). For details, please refer to the relevant description in Section 16.2.1 of 3GPP TS 36.213.

[0086] (4) Sidelink power control

[0087] For the NR sidelink system, when the Tx UE communicates with the Rx UE, it is necessary to control the transmit power of the Tx UE to reduce signal interference to the base station and other UEs. Figure 3 As shown in FIG. 1 , UE1 to UE3 all have RSRP measurement capability. Taking UE1 as a Tx UE and UE2 as an Rx UE, the power control scheme of the Tx UE is: P PSSCH (i) = min(P CMAX ,P MAX,CBR ,min(P PSSCH,D (i),P PSSCH,SL (i)))[dBm], where P CMAX ,P MAX,CBR Related to the UE's own transmission capability, For parameter description, please refer to the relevant description of power control parameters in (1) or (2) above, which will not be repeated here. PSSCH,SL (i) is the transmit power of the UE during sidelink communication; min(P PSSCH,D (i),P PSSCH,SL (i)) is to prevent the UE from interfering with the base station and other UEs when sending sidelink signals. PSSCH(i) It is necessary to obtain the path loss of the uplink and sidelink. Therefore, the base station sends a synchronization signal to UE1, and UE1 calculates the path loss between the base station and UE1 by measuring the synchronization signal. At the same time, the path loss between UE1 and UE2 can be obtained through the RSRP measurement result fed back by UE2. Among them, the RSRP measurement result is obtained by UE2 measuring the reference signal (RS).

[0088] In such Figure 4 In the passive IoT communication system under the UE-assisted architecture shown in the figure, the tag itself does not have measurement capability, and the link between the UE and the tag is a passive link. Since the tag itself cannot actively send a radio frequency signal, the UE needs to first transmit an excitation or carrier signal (carrying downlink data DL data), and the tag modulates the carrier signal and reflects the modulated signal (carrying uplink data UL Data) to the UE or base station to complete the data transmission.

[0089] It can be seen that the tag needs to rely on the carrier signal sent by the UE to send uplink data to the base station. However, for the tag, it only includes absorption / reflection functions, and the receiver does not have any measurement capabilities such as RSRP, which makes it impossible to feedback RSRP or even RSSI to the network side like traditional UE to achieve power control of UE transmitted signals. To this end, an embodiment of the present application provides a power control method that can achieve power control of UE in a passive IoT communication system under a UE-assisted architecture.

[0090] In the embodiments of the present application, the transmission power may also be referred to as the sending power, which is not limited thereto.

[0091] For example, Figure 5 This is a schematic diagram of the architecture of a power adjustment system provided in an embodiment of the present application. Figure 5 As shown, the power adjustment system includes: a first device, a second device and a network device, and the network device, the first device and the second device can communicate with each other.

[0092] In the embodiment of the present application, the first device may be a terminal device, which is a terminal that accesses the above-mentioned communication system and has a wireless transceiver function or a chip or chip system that can be set in the terminal. The terminal device may also be referred to as a user device, an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The terminal device in the embodiment of the present application may be a mobile phone, a tablet computer, a computer with a wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a vehicle-mounted terminal, an RSU with terminal function, etc. The terminal device of the present application may also be a vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit that is built into the vehicle as one or more components or units. The vehicle can implement the method provided by the present application through the built-in vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit.

[0093] The second device has ultra-low power consumption, does not have baseband signal processing capabilities, but supports RF signal absorption and / or reflection capabilities. The second device can be called a terminal device in the Internet of Things, and can also be called a passive A-IoT, a passive tag, a tag, a tag device, a passive device, a passive device, a semi-active device, a battery-free terminal / device, a battery-free terminal / device, a back-reflection terminal / device, a backscatter terminal (back scatter terminal), a passive IoT, a reflector, a reflection terminal, or a scattering signal device (ambient signal device), etc. Applied in the embodiment of the present application, the device for realizing the function of the second device can be the second device, or it can be a device that can support the second device to realize the function, such as a chip system. In the embodiment of the present application, the chip system can be composed of a chip, or it can include a chip and other discrete devices. In the embodiment of the present application, taking the device for realizing the function of the second device as the second device as an example, the technical solution provided in the embodiment of the present application is described.

[0094] The network device may also be referred to as an access network (RAN) node, a wireless access network device, an access network device, a RAN entity or an access node, etc., located on the network side of the above-mentioned communication system, to help the terminal device achieve wireless access, and a device with a wireless transceiver function or a chip or chip system that can be set in the device. The network device includes but is not limited to: a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation NodeB (gNB), a next generation base station in a sixth generation (6th generation, 6G) mobile communication system, a base station in a future mobile communication system, or an access node in a Wi-Fi system, etc. The network device may be a macro base station, a micro base station or an indoor station, a relay node or a donor node, or a wireless controller in a centralized radio access network (CRAN) scenario. Optionally, the RAN node may also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, the access network device in the V2X technology may be a road side unit (RSU). All or part of the functions of the network device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (such as a cloud platform). The network device in this application can also be a logical node, logical module or software that can implement all or part of the network device functions.

[0095] In another possible scenario, multiple RAN nodes collaborate to assist the terminal device in achieving wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be set separately, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH).

[0096] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, CU, CU-CP, CU-UP, DU and RU are described as examples in this application. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0097] Further, exemplary, Figure 6 This is a schematic diagram of the architecture of a communication system applicable to the above power control system provided in an embodiment of the present application. Figure 6 As shown, the communication system 6000 includes a wireless access network 100 and a core network 200. Optionally, the communication system 6000 may also include the Internet 300. The wireless access network 100 may include at least one base station (such as Figure 6 110a and 110b), and may further include at least one terminal (such as Figure 6 120a-120j in FIG. 120b). The terminal is connected to the base station wirelessly, and the base station is connected to the core network wirelessly or by wire. The core network device and the base station may be independent and different physical devices, or the functions of the core network device and the logical functions of the base station may be integrated on the same physical device, or the functions of some core network devices and some base station may be integrated on one physical device. Terminals and base stations may be connected to each other by wire or wirelessly. Figure 6 This is just a schematic diagram. The communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices. Figure 6 Not drawn in.

[0098] Base stations and terminals can be fixed or movable. Base stations and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on airplanes, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0099] The roles of the base station and the terminal can be relative, for example, Figure 6The helicopter or drone 120i in the figure can be configured as a mobile base station. For the terminal 120j that accesses the wireless access network 100 through 120i, the terminal 120i is a base station; but for the base station 110a, 120i is a terminal, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between base stations. In this case, relative to 110a, 120i is also a base station. Therefore, base stations and terminals can be collectively referred to as communication devices. Figure 6 110a and 110b in the figure may be referred to as communication devices having base station functions. Figure 6 120a-120j in the figure can be called communication devices with terminal functions.

[0100] Base stations and terminals, base stations and base stations, and terminals and terminals can communicate through authorized spectrum, unauthorized spectrum, or both; they can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0101] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem including the base station functions. The control subsystem including the base station functions here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal may also be performed by a module (such as a chip or a modem) in the terminal, or by a device including the terminal functions.

[0102] It should be pointed out that the solutions in the embodiments of the present application can also be applied to other communication systems, and the corresponding names can also be replaced by the names of corresponding functions in other communication systems.

[0103] The following will be combined Figure 7 The power control method provided in the embodiment of the present application is described in detail.

[0104] For example, Figure 7 A schematic diagram of a power control method provided in an embodiment of the present application. The power control method can be applied to Figure 5 or Figure 6 In the system shown, the power control method provided in the embodiment of the present application is described by taking the first device as a terminal device and the second device as a tag as an example.

[0105] like Figure 7 As shown, the power control method includes the following steps:

[0106] S701: A first device sends a first carrier signal to a second device. Correspondingly, the second device receives the first carrier signal from the first device.

[0107] In an embodiment of the present application, the first carrier signal carries / bears data information, and the first carrier signal can provide energy for the second device, so that the second device can parse and receive the information carried by the first carrier signal, and can modulate, encode, and process the received first carrier signal to obtain a first signal, and send uplink data through the first signal.

[0108] In one possible scenario, the first carrier signal is a carrier signal sent by the first device to the second device for the first time. At this time, since the second device cannot send the first signal to the network device before receiving the first carrier signal, the first communication has not yet been carried out. Therefore, the network device, the first device and the second device have not yet formed a closed-loop communication and are in an open-loop state. In this case, the transmission power of the first carrier signal can be achieved through the following two design schemes:

[0109] In one possible design, the network device sends a reference signal to the first device, so that the first device receives the reference signal from the network device and determines the transmit power of the first carrier signal based on the receive power of the reference signal. That is, the first device can obtain the receive power of the reference signal (such as RSRP or RSSI) by measuring the reference signal sent by the network device, so that the first device can determine the path loss between the network device and the first device based on the receive power of the reference signal, and determine the transmit power of the first carrier signal based on the path loss between the network device and the first device. By way of example, the reference signal can be SSB, CSI-RS, demodulation reference signal (DMRS), phase-tracking reference signals (PTRS), or positioning reference signal (PRS), etc.

[0110] Exemplarily, the transmission power P of the first carrier signal carrier1 (i) The following relationship can be satisfied: in, is the maximum transmission power of the first device, is the received power of the first signal that the network device expects to obtain, μ1 is the subcarrier spacing sequence number of the first carrier signal, is the bandwidth of the first carrier signal, normalized to 1 RB, A partial path loss supplement factor used to calculate the transmit power of the first carrier signal, is the path loss between the network device and the first apparatus. In the embodiment of the present application, μ1, It may be pre-configured to the first device by the network device, or it may be determined by negotiation between the network device and the first device, which is not limited.

[0111] In another possible design, the transmission power of the first carrier signal may be configured by the network device for the first apparatus. In other words, the network device may indicate the transmission power of the first carrier signal to the first apparatus.

[0112] It should be understood that before the second device participates in the communication, the network device may also send an activation signal to the second device to put the second device into a working state.

[0113] In another possible scenario, the first carrier signal is not the first carrier signal sent by the first device, that is, the first device has sent a carrier signal to the second device before sending the first carrier. At this time, since the second device can send a signal to the network device according to the carrier signal sent by the first device, that is, the network device and the second device have communicated for the first time, a closed-loop communication has been formed between the network device, the first device and the second device, and they are in an open-loop state. In this case, the process of determining the transmission power of the first carrier signal can refer to the process of determining the transmission power of the second carrier signal in S702 to S705 below, which will not be repeated here.

[0114] Thus, the first device can send the first carrier signal to the second device according to the determined transmission power of the first carrier signal.

[0115] S702: The second device sends a first signal to the network device. Correspondingly, the network device receives the first signal from the second device.

[0116] The first signal is associated with the first carrier signal. In other words, the generation of the first signal depends on the first carrier signal.

[0117] As described in S701 above, after receiving the first carrier signal, the second device can obtain the information carried by the first carrier signal by demodulating and decoding the received first carrier signal, and then re-modulate and encode the received first carrier signal to obtain the first signal. It can be understood that the first signal can be considered as the re-modulated first carrier signal, and the data carried by the first signal is different from that of the first carrier signal. In addition, since the power of the first device when sending the first carrier signal is lost during the transmission process, the power of the first carrier signal received by the second device is smaller than the power when sending the first carrier signal. At the same time, the received first carrier signal provides energy for the second device, so that the second device has enough energy to process the received first carrier signal.

[0118] In a possible design scheme, the first signal is associated with the first carrier signal, which may include: the first signal is determined by the second device reflecting the received first carrier signal. Reflection can be understood as modulating the received first carrier signal before sending it, such as performing simple amplitude modulation on the received first carrier signal, and the amplitude modulation can be OOK modulation, ASK modulation, etc., or reflection can also be understood as basic electromagnetic wave reflection, which is not limited.

[0119] S703: The network device measures the first signal to determine the received power of the first signal.

[0120] Exemplarily, the network device may perform power measurement on the received first signal to obtain the received power of the first signal.

[0121] S704: The network device sends the first information to the first apparatus. Correspondingly, the first apparatus receives the first information from the network device.

[0122] The first information is used to indicate the transmission power of the second carrier signal, and the first information is associated with the reception power of the first signal. In other words, the first information can be determined according to the reception power of the first signal.

[0123] In a possible design scheme, the first information is used to indicate the transmission power of the second carrier signal, including: the first information is used to indicate at least one of the first path loss or the power adjustment amount or the power value. Alternatively, the first information includes the received power of the first signal or at least one of the first path loss or the power adjustment amount or the power value.

[0124] The first path loss may include the path loss between the first device and the second device and the path loss between the second device and the network device. That is, the network device may determine the first path loss by comparing the power change of the transmission power of the first carrier signal and the reception power of the first signal. It should be understood that the first path loss may also include the loss generated by the second device processing the received first carrier signal.

[0125] In the case where the first information is used to indicate the first path loss, the first information may include the received power of the first signal or the first path loss. If the first information includes the received power of the first signal, the first device may determine the first path loss based on the received power of the first signal and the transmitted power of the first carrier signal. Thus, the first device may determine the power of the carrier signal (second carrier signal) to be transmitted next time according to the first path loss.

[0126] Exemplarily, the transmission power P of the second carrier signal carrier2 (i) The following relationship can be satisfied: or, in, is the received power of the second signal that the network device expects to obtain, μ2 is the subcarrier spacing sequence number of the second carrier signal, is the bandwidth of the second carrier signal, A partial path loss supplement factor used to calculate the transmit power of the second carrier signal, is the first path loss. In the embodiment of the present application, μ2, It may be pre-configured to the first device by the network device, or it may be determined by negotiation between the network device and the first device, which is not limited.

[0127] It should be understood that considering different communication scenarios or communication requirements, different carrier signal configurations μ n , There may be differences.

[0128] The power adjustment amount is used to characterize the power change required to adjust the transmit power of the first carrier signal to the transmit power of the second carrier signal. It can be a relative adjustment value of the transmit power. The power adjustment amount can be a positive value or a negative value. In the case where the first information is used to indicate the power adjustment amount, the first device can determine the transmit power of the second carrier signal according to the power adjustment amount. Exemplarily, after receiving the first information, the first device can parse and obtain the power adjustment value, and increase or decrease the power based on the transmit power of the first carrier signal to obtain the transmit power of the second carrier signal. Exemplarily, P carrier2 (i) = P carrier1(i)+Δ, Δ is the power adjustment amount.

[0129] The power value is used to characterize the specific numerical value of the transmission power of the second carrier signal. In other words, after the network device determines the transmission power of the second carrier signal based on the received power of the first signal, it indicates the specific numerical value of the transmission power of the second carrier signal to the first device through the first information, wherein the specific process of the network device determining the transmission power of the second carrier signal can refer to the above-mentioned description of the first device calculating the transmission power of the second carrier signal based on the first path loss, which will not be repeated here. In the case where the first information is used to indicate the power value, after the first device receives the first information, it can directly send the second carrier signal according to the transmission power of the second carrier signal obtained by analysis.

[0130] In a possible design scheme, the first information may also be associated with at least one of the following: the bandwidth of the first carrier signal, the bandwidth of the second carrier signal, the bandwidth of the first signal, or the bandwidth of the second signal, wherein the second signal is determined by the reflection of the received second carrier signal by the second device. The specific description can be found in the relevant description of the first signal in S701 and S702 above, and will not be repeated here.

[0131] In one possible design, the bandwidth of the first signal may be the same as the bandwidth of the first carrier signal. Considering that the second device does not have any measurement capability, if the bandwidth of the first signal is different from the bandwidth of the first carrier signal, the network device may not be able to obtain the first path loss based on the received power of the first signal after obtaining the received power of the first signal, thereby failing to implement power control of the first device.

[0132] S705. The first device sends a second carrier signal to the second device according to the transmission power of the second carrier signal.

[0133] In an embodiment of the present application, the first device adjusts the transmission power of the currently configured carrier signal (first carrier signal) according to the first information to obtain the power of the carrier signal (second carrier signal) to be sent next time, and thereby sends the second carrier signal to the second device according to the adjusted transmission power of the carrier signal.

[0134] based on Figure 7In the power control method shown, the network device measures the received power of the first signal from the second device, the first signal is related to the carrier signal (such as the first carrier signal) currently sent by the first device, and can determine the first information indicating the power of the carrier signal (such as the second carrier signal) sent by the first device next time according to the received power of the first signal, so that the first device can control the power of the carrier signal sent next time according to the first information. Thus, the network device, the first device and the second device form a closed loop to control the power of the carrier signal sent by the first device, which can effectively reduce neighboring interference and improve communication reliability.

[0135] It can be understood that in each of the above embodiments, the methods and / or steps implemented by the first device can also be implemented by components that can be used for the first device (such as a processor, chip, chip system, circuit, logic module, or software); the methods and / or steps implemented by the second device can also be implemented by components that can be used for the second device (such as a processor, chip, chip system, circuit, logic module, or software); the methods and / or steps implemented by the network device can also be implemented by components that can be used for the network device (such as a processor, chip, chip system, circuit, logic module, or software).

[0136] The above mainly introduces the scheme provided by the present application. Accordingly, the present application also provides a communication device, which is used to implement the various methods in the above method embodiments. The communication device can be the first device in the above method embodiments, or a device including the first device, or a component that can be used for the first device, such as a chip or a chip system. Alternatively, the communication device can be the second device in the above method embodiments, or a device including the second device, or a component that can be used for the second device, such as a chip or a chip system. Alternatively, the communication device can be the network device in the above method embodiments, or a device including the network device, or a component that can be used for the network device, such as a chip or a chip system.

[0137] It is understandable that, in order to realize the above functions, the communication device includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0138] The embodiment of the present application can divide the functional modules of the communication device according to the above method embodiment. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0139] Take the communication device as the first device or the second device or the network device in the above method embodiment as an example, Figure 8 Schematic diagram of a communication device provided in an embodiment of the present application. Figure 8 As shown, the communication device 800 includes: a processing module 801 and a transceiver module 802 .

[0140] The processing module 801 is used to execute the processing function of the first device or the second device or the network device in the above method embodiment. The transceiver module 802 is used to execute the transceiver function of the first device or the second device or the network device in the above method embodiment.

[0141] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0142] Since the communication device 800 provided in this embodiment can execute the above-mentioned computing task scheduling method, the technical effects that can be obtained can refer to the above-mentioned method embodiment and will not be repeated here.

[0143] In a possible design scheme, in the embodiment of the present application, the transceiver module 802 may include a receiving module and a sending module ( Figure 8 The transceiver module is used to implement the sending function and the receiving function of the communication device 800.

[0144] In a possible design solution, the communication device 800 may further include a storage module ( Figure 8 (not shown in the figure), the storage module stores a program or instruction. When the processing module 801 executes the program or instruction, the communication device 800 can execute Figure 7 The functions of the first device or the second device or the network device in the method shown.

[0145] It should be understood that the processing module 801 involved in the communication device 800 can be implemented by a processor or a processor-related circuit component, which can be a processor or a processing unit; the transceiver module 802 can be implemented by a transceiver or a transceiver-related circuit component, which can be a transceiver or a transceiver unit.

[0146] For example, Fig. 9 This is a schematic diagram of the structure of another communication device provided in an embodiment of the present application. The communication device may be a first device or a second device or a network device, or may be a chip (system) or other component or assembly that can be provided in the first device or the second device or the network device. Fig. 9 As shown, the communication device 900 may include a processor 901. In a possible design, the communication device 900 may further include a memory 902 and / or a transceiver 903. The processor 901 is coupled to the memory 902 and the transceiver 903, for example, via a communication bus.

[0147] Combine the following Fig. 9 The components of the communication device 900 are described in detail:

[0148] The processor 901 is the control center of the communication device 900, and may be a processor or a general term for multiple processing elements. For example, the processor 901 is one or more central processing units (CPUs), or may be application specific integrated circuits (ASICs), or may be configured to implement one or more integrated circuits of the embodiments of the present application, such as one or more microprocessors (digital signal processors, DSPs), or one or more field programmable gate arrays (FPGAs).

[0149] In one possible design, the processor 901 may perform various functions of the communication device 900 by running or executing a software program stored in the memory 902 and calling data stored in the memory 902 .

[0150] In a specific implementation, as an embodiment, the processor 901 may include one or more CPUs, such as Fig. 9 CPU0 and CPU1 are shown in FIG.

[0151] In a specific implementation, as an embodiment, the communication device 900 may also include multiple processors, such as Fig. 9 901 and processor 904 are shown in FIG. Each of these processors may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). A processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0152] The memory 902 is used to store the software program for executing the solution of the present application, and the execution is controlled by the processor 901. The specific implementation method can refer to the above method embodiment, which will not be repeated here.

[0153] In a possible design, the memory 902 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 902 may be integrated with the processor 901, or may exist independently and access the processor 901 through the interface circuit ( Fig. 9 (not shown) is coupled to the processor 901, which is not specifically limited in the embodiment of the present application.

[0154] The transceiver 903 is used for communication with other communication devices. For example, the communication device 900 is a terminal device, and the transceiver 903 can be used to communicate with a network device, or with another terminal device. For another example, the communication device 900 is a network device, and the transceiver 903 can be used to communicate with a terminal device, or with another network device.

[0155] In one possible design, the transceiver 903 may include a receiver and a transmitter ( Fig. 9 The receiver is used to implement a receiving function, and the transmitter is used to implement a sending function.

[0156] In a possible design, the transceiver 903 may be integrated with the processor 901, or may exist independently and communicate with the processor 901 through the interface circuit ( Fig. 9 (not shown) is coupled to the processor 901, which is not specifically limited in the embodiment of the present application.

[0157] It should be noted that Fig. 9The structure of the communication device 900 shown in the figure does not constitute a limitation on the communication device. The actual communication device may include more or fewer components than those shown in the figure, or combine certain components, or arrange the components differently.

[0158] In addition, the technical effects of the communication device 900 can refer to the technical effects of the computing task scheduling method described in the above method embodiment, and will not be repeated here.

[0159] The embodiment of the present application also provides a computer-readable storage medium on which a computer program or instruction is stored. When the computer program or instruction is executed by a computer, the functions of the above-mentioned method embodiment are realized.

[0160] The embodiment of the present application also provides a computer program product, which implements the functions of the above method embodiment when executed by a computer.

[0161] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loading and executing computer program instructions on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. Computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server, data center, etc. that contains one or more servers that can be integrated with a medium. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0162] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0163] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0164] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0165] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0166] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0167] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0168] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other changes to the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0169] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A power control method, characterized in that: The method comprises: The first device sends a first carrier signal to the second device; The first device receives first information from a network device, the first information is used to indicate the transmission power of the second carrier signal, the first information is associated with the reception power of the first signal, and the first signal is associated with the first carrier signal; The first device sends a second carrier signal to the second device according to the transmission power of the second carrier signal.

2. A power control method, characterized in that: The method comprises: The second device receives the first carrier signal from the first device and sends a first signal to the network device, wherein the first signal is associated with the first carrier signal; The network device measures the first signal to determine a received power of the first signal, where the received power of the first signal is associated with first information, and the first information is used to indicate a transmitted power of a second carrier signal; The network device sends the first information to the first apparatus; The first device receives the first information from the network equipment, and sends the second carrier signal to the second device according to the transmission power of the second carrier signal.

3. The method according to claim 1 or 2, characterized in that: The first signal is associated with the first carrier signal, including: the first signal is determined by the second device reflecting the first carrier signal received.

4. The method according to any one of claims 1 to 3, characterized in that The method further comprises: The first device receives a reference signal from the network device; The first device determines the transmit power of the first carrier signal according to the receive power of the reference signal; The first device sends the first carrier signal to the second device according to the transmission power of the first carrier signal.

5. A power control method, characterized in that: The method comprises: The network device receives a first signal from a second device; The network device measures the first signal to determine the received power of the first signal; The network device sends first information to the first apparatus, the first information is associated with the receiving power of the first signal, and the first information is used to indicate the sending power of the second carrier signal.

6. The method according to any one of claims 1 to 5, characterized in that The first information is used to indicate the transmission power of the second carrier signal, including: the first information is used to indicate at least one of a first path loss or a power adjustment amount or a power value.

7. The method according to claim 6, characterized in that The first path loss includes a path loss between the first device and the second device and a path loss between the second device and the network equipment.

8. The method according to any one of claims 1 to 7, characterized in that The bandwidth of the first signal is the same as the bandwidth of the first carrier signal.

9. A power control method, characterized in that: The method comprises: The second device receives the first carrier signal from the first device; The second device sends a first signal to the network device, and the first signal is associated with the first carrier signal.

10. The method according to claim 9, characterized in that The first signal is associated with the first carrier signal, including: the first signal is determined by the second device reflecting the first carrier signal received.

11. A communication device, characterized in that: The device comprises: a processing module and a transceiver module; wherein, The processing module is used to control the transceiver module to send a first carrier signal to the second device; The processing module is further used to control the transceiver module to receive first information from the network device, the first information is used to indicate the transmission power of the second carrier signal, the first information is associated with the reception power of the first signal, and the first signal is associated with the first carrier signal; The processing module is further used to control the transceiver module to send the second carrier signal to the second device according to the transmission power of the second carrier signal.

12. The device according to claim 11, characterized in that The first signal is associated with the first carrier signal, including: the first signal is determined by the second device reflecting the first carrier signal received.

13. The device according to claim 11 or 12, characterized in that The transceiver module is further used to receive a reference signal from the network device; The processing module is further configured to determine the transmit power of the first carrier signal according to the receive power of the reference signal; The transceiver module is further configured to send the first carrier signal to the second device according to the transmission power of the first carrier signal.

14. A communication device, characterized in that: The device comprises: a processing module and a transceiver module; wherein, The transceiver module is used to receive a first signal from a second device; The processing module is used to measure the first signal and determine the received power of the first signal; The transceiver module is further used to send first information to the first device, where the first information is associated with the receiving power of the first signal, and the first information is used to indicate the sending power of the second carrier signal.

15. The device according to any one of claims 11 to 14, characterized in that The first information is used to indicate the transmission power of the second carrier signal, including: the first information is used to indicate at least one of a first path loss or a power adjustment amount or a power value.

16. The device according to claim 15, characterized in that The first path loss includes a path loss between the first device and the second device and a path loss between the second device and the network equipment.

17. The device according to any one of claims 11 to 16, characterized in that The bandwidth of the first signal is the same as the bandwidth of the first carrier signal.

18. A communication device, characterized in that: The device comprises: a processing module and a transceiver module; wherein, The processing module is used to control the transceiver module to receive a first carrier signal from a first device; The processing module is further used to control the transceiver module to send a first signal to the network device, where the first signal is associated with the first carrier signal.

19. The device according to claim 18, characterized in that The first signal is associated with the first carrier signal, including: the first signal is determined by the reflection of the first carrier signal received by the second device.

20. A communication device, characterized in that: include: A processor, wherein the processor is configured to execute a computer program so that the communication device executes the method according to any one of claims 1, 3-4, and 6-8.

21. A communication device, characterized in that: include: A processor, wherein the processor is configured to execute a computer program so that the communication device executes the method according to any one of claims 5 to 8.

22. A communication device, characterized in that: include: A processor, wherein the processor is configured to execute a computer program so that the communication device executes the method according to claim 9 or 10.

23. A communication system, characterized in that: It includes a first device for executing the method as described in any one of claims 1, 3-4, and 6-8, a network device for executing the method as described in any one of claims 5-8, and a second device for executing the method as described in claim 9 or 10.

24. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or instruction, and when the computer program or instruction is executed by the communication device, the method according to any one of claims 1, 3-4, and 6-8 or claims 5-8 or claims 9 or 10 is implemented.

25. A computer program product, characterized in that The device comprises a computer program code, and when the computer program code is executed on a communication device, the communication device implements the method according to any one of claims 1, 3-4, and 6-8 or claims 5-8 or claims 9 or 10.

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