Transmission power control method, apparatus and system

Abstract

The present application relates to a transmission power control method, apparatus and system. The method comprises: a terminal sending first information to a network device, wherein the first information is used for indicating at least one power ramping level supported by the terminal; and the terminal receiving second information from the network device, wherein the second information is used for indicating a first power ramping level, which is any one of the at least one power ramping level, and the first power ramping level is used for the terminal to perform transmission power control. In the embodiments of the present application, on the basis of conditions such as a network environment, a network device flexibly selects one power ramping level from among at least one power ramping level and uses same as a power ramping level configured for a terminal, such that the terminal does not ramp up a transmission power at a fixed value any more, and thus a power ramping level value used for the terminal to perform transmission power control may be adapted to different network environments, thereby improving the flexibility of power control and better ensuring the communication quality.

Description

A method, device and system for controlling transmission power

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on December 18, 2023, with application number 202311751089.0 and application name "A method, device and system for controlling transmission power", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of communication technology, and in particular to a method, device and system for controlling transmission power. Background Art

[0004] In wireless communication systems, due to the transmission characteristics of electromagnetic waves, wireless transmission path loss is a common problem. To prevent this from causing poor communication quality, the transmitter typically increases the transmit power to improve the demodulation performance of the receiver, thereby compensating for the impact of wireless transmission path loss on communication quality.

[0005] At present, the transmitting end usually increases the transmitting power according to the power boost value configured by the receiving end. However, the power boost value configured by the receiving end for the transmitting end is generally a fixed value, that is, the transmitting end can only increase the power by a fixed value each time it performs power boosting. It lacks the flexibility to adapt to different network environments, cannot adapt well to the network environment, and thus cannot better guarantee the communication quality. Summary of the Invention

[0006] The embodiments of the present application provide a method, device, and system for controlling transmit power, which are used to improve the flexibility of power boost control.

[0007] In the first aspect, a method for controlling transmit power is provided. The method can be executed by a terminal, or by other devices including terminal functions, or by a chip system (or, chip) or other functional module, which can realize the functions of the terminal, and the chip system or functional module is, for example, provided in the terminal. In the following description, the method is taken as an example of being executed by the terminal. The method includes: sending first information to a network device, the first information being used to indicate at least one power boost level supported by the terminal; receiving second information from the network device, the second information being used to indicate a first power boost level, the first power boost level being any one of the at least one power boost level, and the first power boost level being used for the terminal to perform transmit power control.

[0008] In an embodiment of the present application, the terminal can send at least one power boost level that it can support to the network device. In this way, after receiving the at least one power boost level, the network device can configure a first power boost level for the terminal for transmit power control based on the at least one power boost level. It can be seen that since the first power boost level is any one of the at least one power boost level, it solves to a certain extent the problem that the terminal can only boost power by a fixed value each time it performs a power boost, lacks the flexibility to adapt to different network environments, and cannot adapt well to the network environment, thereby improving the flexibility of power control and better ensuring communication quality.

[0009] In an optional embodiment, the method may further include: receiving third information from the network device, the third information being used to indicate a second power boost level, the second power boost level being selected from the at least one power boost level by the network device when determining that the terminal uses the first power boost level to send an uplink signal, based on the link measurement value of the terminal, and the second power boost level is different from the first power boost level. In this way, after the terminal performs transmit power control via the first power boost level, the network device measures (or performs in real time) the communication link of the terminal, thereby selecting a second power boost level different from the first power boost level from at least one power boost level based on the link measurement value of the terminal, thereby achieving adaptation of the power boost level configuration to the link, that is, the network device can dynamically update the power boost level configuration of the terminal.

[0010] In an optional embodiment, the first power boost level may be the minimum value among the at least one power boost level. Thus, when the first power boost level is the minimum value among the at least one power boost level, it can be ensured that the terminal can achieve control (boost) of the transmit power under any circumstances. For example, if the maximum power boost level that the terminal can support at a certain moment after sending at least one power boost level to the network device is less than the first power boost level randomly configured by the network device for the terminal from the aforementioned at least one power boost level, such as the randomly selected first power boost level is relatively large, then if the terminal performs transmit power control according to the larger first power boost level configured by the network device, it will greatly affect the communication quality, and even fail to achieve transmit power boost control. Therefore, the minimum value selected from the at least one power boost level is configured to the terminal as the first power boost level, which can effectively ensure the smooth progress of terminal power control.

[0011] On the second aspect, another method for controlling transmit power is provided. The method can be executed by a network device, or by other devices including the functions of a network device, or by a chip system (the chip system includes a chip) or other functional modules, and the chip system or functional module can realize the functions of the network device, and the chip system or functional module is, for example, provided in the network device. Optionally, the network device can be an access network device. The access network device can be, for example, a base station, or a base station control device, or other devices in the access network, and this application does not limit this. In the following description, the method is taken as an example in which the method is executed by a network device. The method includes: receiving first information from a terminal, the first information being used to indicate at least one power boost level supported by the terminal; sending second information to the terminal, the second information being used to indicate a first power boost level, the first power boost level being any one of the at least one power boost level, and the first power boost level being used for the terminal to perform transmit power control.

[0012] In an optional embodiment, the method may further include: sending third information to the terminal, the third information being used to indicate a second power boost level, the second power boost level being selected from the at least one power boost level according to the link measurement value of the terminal when the network device determines that the terminal adopts the first power boost level to send an uplink signal, and the second power boost level is different from the first power boost level.

[0013] In an optional implementation, the first power boost level may be the minimum value of the at least one power boost level.

[0014] Regarding the technical effects brought about by the second aspect or various optional implementations, reference may be made to the introduction to the technical effects of the first aspect or corresponding implementations, and the repeated parts will not be described in detail.

[0015] On the third aspect, another method for controlling transmit power is provided. The method can be executed by a terminal, or by other devices including terminal functions, or by a chip system (or, chip) or other functional modules, which can realize the functions of the terminal, and the chip system or functional module is, for example, set in the terminal. In the following introduction, the method is taken as an example of being executed by a terminal. The method includes: sending first information to a network device, the first information is used to indicate the correspondence between different value changes of the target radio frequency indicator and different transmit power increase levels; receiving second information from the network device, the second information is used to indicate a first power increase level, the first power increase level is used for the terminal to perform transmit power control, and the first power increase level is determined based on the detected value change of the target radio frequency indicator of the terminal and the corresponding relationship.

[0016] In an embodiment of the present application, since the terminal reports the correspondence between different value changes of the target radio frequency indicator and different transmission power boost levels to the network device, the network device can configure a suitable power boost level for the terminal according to the value changes of the terminal's target radio frequency indicator detected in different time periods after obtaining the correspondence; in this way, it can not only adapt to the changing network environment and better adapt to the network environment, thereby improving the flexibility of power control, but also further improve the problem of deterioration of communication quality (such as demodulation performance) due to wireless transmission path loss.

[0017] In an optional embodiment, the target RF indicator may include, but is not limited to, at least one of the following: adjacent channel leakage ratio (ACLR), amplitude vector error (EVM), and in-band emission (IBE). Since the values ​​or value ranges corresponding to ACLR, EVM, and IBE are respectively related to the transmit power boost level of the terminal, the appropriate transmit power boost level corresponding to the terminal can be determined more accurately based on the change in the RF indicator parameters (any one of ACLR, EVM, and IBE) or the RF indicator parameter combination (at least two of ACLR, EVM, and IBE) included in different RF indicators over a period of time, to ensure that the terminal can improve communication quality after transmit power control.

[0018] In a fourth aspect, another method for controlling transmit power is provided. The method can be executed by a network device, or by other devices including the functions of a network device, or by a chip system (the chip system includes a chip) or other functional modules, and the chip system or functional module can realize the functions of the network device, and the chip system or functional module is, for example, provided in the network device. Optionally, the network device is an access network device. The access network device can be, for example, a base station, or a base station control device, or other devices in the access network, and this application does not limit this. In the following description, the method is taken as an example in which the method is executed by a network device. The method includes: receiving first information from a terminal, the first information is used to indicate the correspondence between different value changes of a target radio frequency indicator and different transmit power boost levels; sending second information to the terminal, the second information is used to indicate a first power boost level, the first power boost level is used for the terminal to perform transmit power control, and the first power boost level is determined based on the detected value change of the target radio frequency indicator of the terminal and the corresponding relationship.

[0019] In an optional implementation manner, the target radio frequency indicator may include, but is not limited to, at least one of the following: ACLR, EVM, and IBE.

[0020] Regarding the technical effects brought about by the fourth aspect or various optional implementations, reference may be made to the introduction to the technical effects of the third aspect or corresponding implementations, and the repeated parts will not be described in detail.

[0021] In a fifth aspect, a communication device is provided. The communication device may be the terminal described in the first or third aspect. The communication device may also be another entity that includes the aforementioned terminal functions. For example, the communication device may be another device that includes terminal functions, or a chip system (or chip) or other functional module that can implement the terminal functions, and the chip system or functional module is, for example, provided in the terminal. In one optional implementation, the communication device includes a radio frequency device and a baseband device. In another optional implementation, the communication device includes a transceiver unit (sometimes also referred to as a transceiver module) and a processing unit (sometimes also referred to as a processing module). The transceiver unit can implement both transmitting and receiving functions. When the transceiver unit implements the transmitting function, it may be referred to as a transmitting unit (sometimes also referred to as a transmitting module); when the transceiver unit implements the receiving function, it may be referred to as a receiving unit (sometimes also referred to as a receiving module). The transmitting unit and the receiving unit may be the same functional module, referred to as a transceiver unit, that can implement both transmitting and receiving functions; alternatively, the transmitting unit and the receiving unit may be different functional modules, with the transceiver unit being a general term for these functional modules.

[0022] In an optional embodiment, the transceiver unit (or, the sending unit) is used to send first information to the network device, and the first information is used to indicate at least one power boost level supported by the terminal; the transceiver unit (or, the receiving unit) is used to receive second information from the network device, and the second information is used to indicate a first power boost level, and the first power boost level is any one of the at least one power boost level (in other words, a power boost level selected by the processing unit or processing module from the at least one power boost level), and the first power boost level is used for the terminal to perform transmit power control.

[0023] In an optional embodiment, the transceiver unit (or, the receiving unit) is used to receive third information from the network device, and the third information is used to indicate a second power boost level. The second power boost level is selected from the at least one power boost level according to the link measurement value of the terminal when the processing unit (or processing module) determines that the terminal adopts the first power boost level to send an uplink signal, and the second power boost level is different from the first power boost level.

[0024] In an optional embodiment, the transceiver unit (or, the sending unit) is used to send first information to the network device, and the first information is used to indicate the correspondence between different value changes of the target radio frequency indicator and different transmission power increase levels; the transceiver unit (or, the receiving unit) is used to receive second information from the network device, and the second information is used to indicate a first power increase level. The first power increase level is used for the terminal to perform transmission power control, and the first power increase level can be determined by the processing unit (or processing module) based on the detected value change of the current target radio frequency indicator of the terminal and the corresponding relationship.

[0025] In an optional embodiment, the communication device also includes a storage unit (sometimes also referred to as a storage module), and the processing unit is used to couple with the storage unit and execute the program or instructions in the storage unit, so that the processing unit can control or execute the method described in the first or third aspect through the above-mentioned transceiver unit.

[0026] In a sixth aspect, a communication device is provided. The communication device may be the network device described in the second or fourth aspect above. The communication device may also include other entities having the functions of the above-mentioned network devices. For example, the communication device is other devices having the functions of a network device, or is a chip system (or, chip) or other functional modules, and the chip system or functional module can realize the functions of the network device, and the chip system or functional module is, for example, provided in the network device. In an optional implementation, the communication device includes a baseband device and a radio frequency device. In another optional implementation, the communication device includes a processing unit (sometimes also referred to as a processing module) and a transceiver unit (sometimes also referred to as a transceiver module). For the implementation of the transceiver unit, reference may be made to the introduction of the fifth aspect.

[0027] In an optional embodiment, the transceiver unit (or, the receiving unit) is used to receive first information from the terminal, and the first information is used to indicate at least one power boost level supported by the terminal; the transceiver unit (or, the sending unit) is used to send second information to the terminal, and the second information is used to indicate a first power boost level, and the first power boost level is any one of the at least one power boost level (in other words, a power boost level selected by the processing unit or processing module from the at least one power boost level), and the first power boost level is used for the terminal to perform transmit power control.

[0028] In an optional embodiment, the transceiver unit (or, the sending unit) is used to send third information to the terminal, and the third information is used to indicate a second power boost level. The second power boost level is selected from the at least one power boost level according to the link measurement value of the terminal when the processing unit (or processing module) determines that the terminal adopts the first power boost level to send an uplink signal, and the second power boost level is different from the first power boost level.

[0029] In an optional embodiment, the transceiver unit (or, the receiving unit) is used to receive first information from the terminal, and the first information is used to indicate the correspondence between different value changes of the target radio frequency indicator and different transmission power boost levels; the transceiver unit (or, the sending unit) is used to send second information to the terminal, and the second information is used to indicate a first power boost level, and the first power boost level is used for the terminal to perform transmission power control, and the first power boost level can be determined by the processing unit (or processing module) based on the detected value change of the current target radio frequency indicator of the terminal and the corresponding relationship.

[0030] In an optional embodiment, the communication device also includes a storage unit (sometimes also referred to as a storage module), and the processing unit is used to couple with the storage unit and execute the program or instructions in the storage unit, so that the processing unit can control or execute the method described in the second aspect or the fourth aspect through the above-mentioned transceiver unit.

[0031] In a seventh aspect, a communication device is provided, which may be a terminal, or a chip or chip system used in a terminal. The communication device includes a communication interface and a processor, and optionally, a memory. The memory is used to store a computer program, and the processor is coupled to the memory and the communication interface. When the processor reads the computer program or instructions through the communication interface, the communication device executes the method performed by the terminal in the above aspects.

[0032] In an eighth aspect, a communication device is provided. The communication device may be a network device, or a chip or chip system used in a network device. The communication device includes a communication interface and a processor, and optionally, a memory. The memory is used to store a computer program. The processor is coupled to the memory and the communication interface. When the processor reads the computer program or instructions through the communication interface, the communication device executes the method performed by the network device in the above aspects.

[0033] In a ninth aspect, a communication system is provided, comprising a terminal and a network device, wherein the terminal is configured to execute the method described in the first aspect, and the network device is configured to execute the method described in the second aspect; alternatively, the terminal is configured to execute the method described in the third aspect, and the network device is configured to execute the method described in the fourth aspect. Optionally, the communication system may further include other devices or equipment, for example, other devices in addition to the terminal and network device, without limitation.

[0034] In the tenth aspect, a computer-readable storage medium is provided, which is used to store computer programs or instructions. When the computer program or instructions are executed, the methods performed by the terminal and / or network device in each of the above-mentioned first to fourth aspects are implemented.

[0035] In an eleventh aspect, a computer program product comprising instructions is provided, which enables the methods described in any of the first to fourth aspects to be implemented when the computer program or instructions are executed on a computer.

[0036] In the twelfth aspect, a chip system is provided, comprising a processor and an interface, wherein the processor is used to call and execute instructions from the interface so that the chip system implements the methods described in each of the first to fourth aspects above. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] FIG1 is a schematic diagram of a network architecture used in an embodiment of the present application;

[0038] FIG2 is a schematic diagram of another network architecture used in an embodiment of the present application;

[0039] FIG3 is a flow chart of a method for controlling transmission power according to an embodiment of the present application;

[0040] FIG4 is a flow chart of another method for controlling transmit power provided in an embodiment of the present application;

[0041] FIG5 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0042] FIG6 is a schematic diagram of another device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0044] In the embodiments of the present application, the number of nouns, unless otherwise specified, means "singular noun or plural noun", that is, "one or more". "At least one" means one or more, and "plural" means two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists 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. For example, A / B means: A or B. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.

[0045] The ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the size, content, order, timing, priority or importance of multiple objects. For example, the first information and the second information can be the same information or different information, and such names do not indicate the difference in the sending end / receiving end, format, content, size, application scenario, priority or importance of the two information. In addition, the numbering of the steps in the various embodiments introduced in this application is sometimes only for distinguishing different steps and is not used to limit the order of the steps.

[0046] Below, some terms or concepts in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0047] (1) In the embodiment of the present application, the terminal is a device with wireless transceiver function, which can be a fixed device, a mobile device, a handheld device (such as a mobile phone), a wearable device, a vehicle-mounted device, or a wireless device built into the above-mentioned device (such as a communication module, a modem, or a chip system, etc.). The terminal is used to connect people, objects, machines, etc., and can be widely used in various scenarios, such as but not limited to the following scenarios: sensing scenarios, cellular communications, device-to-device communication (D2D), vehicle to everything (V2X), machine-to-machine / machine-type communications (M2M / MTC), Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, drones, robots, indoor commercial scenarios (such as mobile phone screen projection, file sharing, mobile phone to VR glasses video transmission) and other scenarios. When the terminal is applied to V2X, it can also be called a V2X device, for example, a smart car (or intelligent car), a digital car, an unmanned car (or driverless car or pilotless car or automobile), a self-driving car (or autonomous car), a pure electric vehicle (or battery EV), a hybrid electric vehicle (HEV), a range-extended EV (REEV), a plug-in hybrid electric vehicle (PHEV), a new energy vehicle (new energy vehicle), or a roadside unit (RSU). A terminal can also be a device used in D2D communication, such as an electricity meter or water meter.

[0048] In addition, in the embodiment of the present application, the terminal can also be a terminal in an IoT system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection.

[0049] As described above, various terminals, if located on a vehicle (e.g., placed in a vehicle or installed in a vehicle), can be considered as a vehicle-mounted terminal, which is also referred to as an on-board unit (OBU). The terminal of the present application can also be an on-board module, on-board module, on-board component, on-board chip or on-board unit built into the vehicle as one or more components or units, and the vehicle can implement the method of the present application through the built-in on-board module, on-board module, on-board component, on-board chip or on-board unit.

[0050] The terminal may sometimes be referred to as user equipment (UE), terminal equipment, access station, UE station, remote station, wireless communication device, or user device, etc.

[0051] In the embodiments of the present application, the communication device used to implement the terminal function can be a terminal, or a communication device capable of supporting the terminal to implement the function, such as a chip system, and the communication device can be installed in the terminal. In the technical solutions provided in the embodiments of the present application, the technical solutions provided in the embodiments of the present application are described by taking the communication device used to implement the terminal function as an example.

[0052] (2) The network devices in the embodiments of the present application include, for example, access network devices and / or core network devices. The access network devices are devices with wireless transceiver functions, used to communicate with the terminal. The access network devices include but are not limited to base stations (base transceiver stations (BTS), node B, evolved node B (eNodeB) / eNB, or the next generation node B (gNodeB) / gNB), transmission reception points (TRP), base stations subsequently evolved by the third generation partnership project (3GPP), access nodes in wireless fidelity (Wi-Fi) systems, wireless relay nodes, wireless backhaul nodes, etc. The base stations can be: macro base stations, micro base stations, pico base stations, small stations, relay stations, etc. Multiple base stations can support networks with the same access technology, or they can support networks with different access technologies. A base station can include one or more co-sited or non-co-sited transmission and reception points. The access network device may also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The access network device may also be a base station control device. The access network device may also be other devices in the access network such as a server, which is not limited in this application. For example, the network device in the V2X technology may be a road side unit (RSU). The following description of the access network device takes the base station as an example. The base station can communicate with the terminal, or it can communicate with the terminal through a relay station. The terminal can communicate with multiple base stations in different access technologies. The core network device is used to implement functions such as mobility management, data processing, session management, policy and billing. The names of the devices that implement core network functions in systems with different access technologies may be different, and the embodiments of this application do not limit this.Taking the fifth generation mobile communication technology (5G) system as an example, the core network equipment includes: access and mobility management function (AMF), session management function (SMF), policy control function (PCF) or user plane function (UPF), etc.

[0053] In the CU-DU architecture, the access network equipment may include one or more logical network elements such as 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 may be configured separately or included in the same network element, such as a baseband unit (BBU). The RU may be included in a radio frequency device or radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0054] 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 open CU (O-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, the embodiments of the present application are described by taking CU, CU-CP, CU-UP, DU and RU as examples. Any of the CU (or CU-CP, CU-UP), DU and RU in the embodiments of the present application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0055] Optionally, in various embodiments of the present application, the actions performed by the cell (such as sending information to the UE or receiving information from the UE, or processing the information, etc.) may be specifically performed by the network device that provides the cell. Optionally, in various embodiments of the present application, if the network device is a distributed architecture, for example, the network device includes a CU and a DU, or includes a CU-CP, a CU-UP, and a DU, then the network device sends information to the UE, specifically, the DU included in the network device sends information to the UE; the network device receives information from the UE, specifically, the DU included in the network device receives information from the UE. In addition, if the network device is a distributed architecture, for example, the network device includes a CU and a DU, or includes a CU-CP, a CU-UP, and a DU, then the network device sends information to another network device, specifically, the CU or CU-CP included in the network device sends information to the CU or CU-CP of another network device; the network device receives information from another network device, specifically, the CU or CU-CP included in the network device receives information from the CU or CU-CP of another network device.

[0056] In the embodiments of the present application, the communication device for implementing the network device function may be a network device, or may be a device capable of supporting the network device to implement the function, such as a chip system, which may be installed in the network device. In the technical solutions provided in the embodiments of the present application, the technical solutions provided in the embodiments of the present application are described by taking the network device as an example of the device for implementing the network device function being a network device.

[0057] (3) EVM: Also known as vector amplitude error or error vector magnitude, it refers to the difference between the theoretical waveform and the actual received waveform. It is the root mean square value of the ratio of the average error vector signal power to the average reference signal power. It reflects the error between the measured signal (for example, the signal actually sent by the terminal) and the reference signal.

[0058] From the perspective of radio frequency, the factors that lead to the deterioration of EVM include at least the nonlinearity of the power amplifier (PA), in-phase / quadrature (I / Q) imbalance, phase noise and noise of the transceiver. Therefore, EVM is to ensure that the modulation symbols sent by the terminal are not too distorted, thereby affecting the demodulation of the network equipment. Among them, there is a corresponding relationship between the upper limit of the EVM value and the modulation order (MO) of the signal. For example, the upper limit of the EVM value of quadrature phase shift keying (QPSK) is 17.5%, the upper limit of the EVM value of 16-quadrature amplitude modulation (QAM) is 12.5%, and the upper limit of the EVM value of 256QAM is 3.5%. In addition, the larger the EVM, the greater the distortion, which in turn affects the communication performance. Optionally, in various embodiments of the present application, the upper limit of the EVM value can also be referred to as an indicator of the radio frequency parameter EVM.

[0059] (4) IBE: refers to the degree of energy leakage from the transmitted signal occupying the scheduled spectrum resources to the non-scheduled spectrum resources on the in-band spectrum resources.

[0060] (5) ACLR: refers to the ratio of the transmit signal strength on the in-band spectrum resource to the energy leakage on the out-band spectrum resource. ACLR corresponds to different transmit power class (PC) values ​​under different transmit power classes. PC is used to instruct the relevant device (e.g., terminal) to operate at the maximum transmit power (i.e., transmit power class value) specified by the corresponding power class (which can be denoted as PCn, where n can be, but is not limited to, 1, 1.5, 2, or 3. Therefore, PCn can specifically be PC1, PC1.5, PC2, or PC3).

[0061] For example, the transmit power level corresponding to ACLR under PC1 is 37 decibels (dB), the transmit power level corresponding to ACLR under PC1.5 is 31 dB, the transmit power level corresponding to ACLR under PC2 is 31 dB, and the transmit power level corresponding to ACLR under PC3 is 30 dB. Optionally, in various embodiments of the present application, the transmit power level corresponding to ACLR under different PCs may also be referred to as an indicator of the radio frequency parameter ACLR.

[0062] (6) Maximum power reduction (MPR): This refers to the fact that the protocol allows the terminal's transmit power to be reduced to a certain extent based on the PCn. This is the reduction in the maximum transmit power allowed to the terminal (i.e., the transmit power level value corresponding to the terminal's PCn), thereby leaving a certain margin for the terminal to meet RF indicators such as EVM, ACLR, and IBE under any configuration. In this way, communication quality and network stability are also guaranteed in certain situations (for example, the critical point between the linear and nonlinear regions of the PA).

[0063] Optionally, the value of the MPR or the upper limit of the value range is related to the MO of the signal, the type of orthogonal frequency division multiplexing (OFDM) and the type of resource block (RB) used to transmit data. The OFDM type may include discrete Fourier transform-spread-orthogonal frequency division multiplexing (DFT-S-OFDM) and cyclic prefix orthogonal frequency division multiplexing, and the RB type may include in-band RB, out-of-band RB and edge RB.

[0064] Therefore, for example, when the terminal adopts DFT-S-OFDM, QPSK and in-band RB, the MPR value is 0dB; when the terminal adopts DFT-S-OFDM, 16QAM and edge RB, the upper limit of the MPR value range is 3.5dB, that is, MPR≤3.5dB; it should be noted that the MPR value or the upper limit of the value range will not change only because of any change in the MO, OFDM type and RB type of the signal, that is, if one or more of the MO, OFDM type and RB type of the signal changes, the MPR value or the upper limit of the value range may not change.

[0065] Currently, wireless communication systems suffer from wireless transmission path loss due to the transmission characteristics of electromagnetic waves. This loss is particularly severe for uplink communications, where transmit power is relatively limited. Therefore, to mitigate the degradation of communication quality caused by wireless transmission path loss, the transmitting end (e.g., a terminal) typically increases transmit power to improve demodulation performance at the receiving end (e.g., a network device), thereby compensating for the impact of wireless transmission path loss on communication quality.

[0066] Although a variety of transmit power boosting schemes for frequency ranges (FR) have been developed, the power boost value configured by the receiving end for the transmitting end is generally a fixed value, that is, the transmitting end can only increase the power by a fixed value each time it performs a power boost; wherein, FR may include but is not limited to: FR1 (410MHz-7125MHz) and FR2-1 (24250MHz-52600MHz). Exemplarily, a transmit power control method stipulates that under preset conditions, the receiving end can configure a power boost value (e.g., 1dB) for the transmitting end according to IBE. The preset conditions include: the transmitting end uses QPSK modulation, the RB used for data transmission is an RB with MPR=0, and the receiving end configures a default network signaling (NS) value, such as the default NS can be specifically: NS_200. It can be seen that since the transmitting end can only increase the power by a fixed value each time it performs a power boost, it lacks the flexibility to adapt to different network environments, cannot adapt well to the network environment, and thus cannot better guarantee the communication quality.

[0067] In view of this, in an embodiment of the present application, the terminal can send at least one power boost level that it can support to the network device. In this way, after receiving the at least one power boost level, the network device can flexibly select a power boost level from the at least one power boost level as the power boost level configured for the terminal according to the network environment and other conditions. This solves the problem that the terminal can only boost a fixed value each time it performs power boost, lacks the flexibility to adapt to power boosts in different network environments, and cannot adapt well to the network environment, thereby improving the flexibility of power control (boost) and being able to better ensure communication quality. For example, assuming that the terminal reports to the network device that the power boost levels it supports are: 1dB, 2dB, 3dB, and 4dB, after obtaining the power boost levels that the terminal can support, the network device can select a power boost level from the above four power boost levels according to the currently measured link quality, received signal quality, etc. as the power boost level configured for the terminal. For example, the power boost level configured for the terminal is 3dB.

[0068] The technical solutions provided in the embodiments of the present application can be applied to fourth-generation mobile communication technology (4G) systems, such as long-term evolution (LTE) systems, or can be applied to 5G systems, such as new radio (NR) systems, or can also be applied to next-generation mobile communication systems or other similar communication systems, such as sixth-generation mobile communication technology (6G) systems, etc., that is, as long as there are entities (such as terminals and / or network devices) that can interact with information in the communication system, the technical solutions provided in the embodiments of the present application can be implemented. Therefore, there is no restriction on the specific type of the communication system.

[0069] Refer to Figure 1, which is a schematic diagram of a network architecture applied in an embodiment of the present application. As shown in Figure 1, the network architecture includes a network device and at least one terminal, and the terminal can be fixed or movable. The terminal can be connected to the network device in a wireless manner. The network device can be, for example, a base station, and the terminal can be, for example, a UE. Among them, the network device and the terminal can work in the NR system, and the terminal and the network device can communicate through the NR system. It should be noted that Figure 1 is only a schematic diagram, and the mobile communication system can also include other network devices, for example, wireless relay devices and wireless backhaul devices, which are not shown in Figure 1. The embodiment of the present application does not limit the number of network devices and terminals included in the mobile communication system.

[0070] For another example, refer to Figure 2, which is another network architecture diagram applied in an embodiment of the present application. As shown in Figure 2, the network device and terminals 1 to 6 form a wireless communication network. In this wireless communication network, terminals 1 to 6, as entities that send uplink data, can transmit uplink channels to the network device (uplink channels can carry uplink data). Of course, terminals 1 to 6 can also receive downlink data sent by the network device. In addition, terminals 4 to 6 can also form a communication system, in which the network device can send downlink data to terminals 1, 2, 3, and 5, and terminal 5 can also send downlink data to terminal 4 and terminal device 6. It should be understood that the network architecture shown in Figure 2 is only illustrated by taking one network device as an example, but the embodiment of the present application is not limited to this. For example, the network architecture can also include more network devices; similarly, the network architecture can also include more terminals and can also include other devices, which are not shown in Figure 2.

[0071] To better illustrate the embodiments of the present application, the following describes a method for controlling transmit power provided by the embodiments of the present application, with reference to the accompanying drawings. FIG3 illustrates a method for controlling transmit power provided by the embodiments of the present application. The following description uses the network architecture shown in FIG2 as an example for illustration. The method flow is described below.

[0072] S301: A terminal sends first information to a network device. Correspondingly, the network device receives the first information from the terminal.

[0073] The first information may also be referred to as terminal power boost level support information, or may have other names. Therefore, the terminal may indicate at least one power boost level supported by the terminal through the first information. For example, one indication method is that the first information includes a power boost level identifier corresponding to each of the at least one supported power boost levels. The power boost level identifier is, for example, an index of the corresponding power boost level. In this way, the network device may directly determine the power boost level corresponding to each of the at least one supported power boost levels through the index of the at least one power boost level contained in the first information.

[0074] The at least one power boost level may not have the same power boost level. Exemplarily, the terminal sends first information to the network device, where the first information indicates four power boost levels supported by the terminal. For example, the power boost level set corresponding to the four power boost levels is {1dB, 1.5dB, 2dB, 2.5dB}; it can be seen that each power boost level can be different.

[0075] Optionally, the terminal can carry the first information in the uplink control information (UCI) and / or the first transport block (TB) sent to the network device; thereby, the efficiency of the terminal in transmitting the first information can be improved to a certain extent, and signaling transmission overhead can be saved.

[0076] S302: The network device sends second information to the terminal. Correspondingly, the terminal receives the second information from the network device.

[0077] The second information is used to indicate the first power boost level, that is, the power boost level configured by the network device for the terminal according to at least one power boost level supported by the terminal, wherein the first power boost level can be any one of the at least one power boost level. Optionally, the first power boost level can be the maximum value of at least one power boost level, or the first power boost level can also be the minimum value of at least one power boost level, or the first power boost level can be other power boost levels other than the maximum and minimum values ​​of at least one power boost level. Exemplarily, assuming that the at least one power boost level supported by the terminal is: 1dB, 2dB, 3dB and 4dB, therefore, after receiving the aforementioned four power boost levels supported by the terminal, the network device can randomly select a power boost level from the aforementioned four power boost levels as the first power boost level configured for the terminal. For example, the first power boost level can be 3dB.

[0078] It can be understood that network equipment such as a base station can perform measurements on the communication link between the terminal and the terminal in the most recent period of time, or perform measurements on the uplink signal received from the terminal, etc., and according to the measurement results (such as link measurement values ​​or signal reception quality values), select a suitable power boost level from the above-mentioned at least one power boost level as the first power boost level configured for the terminal.

[0079] When the first power boost level is the minimum value among at least one power boost level, it can ensure that the terminal can control the transmit power under any circumstances. For example, still taking the four power boost levels mentioned above: 1dB, 2dB, 3dB and 4dB as an example, if the terminal can support a maximum power boost level of 2dB at a certain moment after sending the above four power boost levels to the network device, then when the network device randomly configures the first power boost level of 3dB from the above four power boost levels for the terminal (the randomly selected first power boost level is relatively large), it can be seen that the randomly selected first power boost level of 3dB exceeds the maximum power boost level of 2dB that the terminal can support at this moment. At this time, if the terminal performs transmit power control according to the larger first power boost level of 3dB configured by the network device, it will greatly affect the communication quality and may even fail to achieve transmit power boost control. Therefore, configuring the minimum value selected from the above at least one power boost level as the first power boost level to the terminal can effectively ensure the smooth implementation of terminal power control. Of course, when the maximum power boost level that the terminal can support is large, such as 5dB, the network device can randomly select any power boost level from the four power boost levels of 1dB, 2dB, 3dB and 4dB and configure it for the terminal. This application does not limit this.

[0080] Furthermore, after receiving the second information from the network device, the terminal can control the transmission power according to the first power boost level indicated by the second information, thereby compensating for the problem that the wireless transmission path loss affects the communication quality.

[0081] Optionally, since the network device may be connected to multiple terminals, it can also receive first information sent by multiple terminals respectively. Furthermore, when the network device configures the first power boost level for multiple terminals, in order to save signaling overhead, the first power boost level can be uniformly configured for the terminals with overlapping power boost levels among the multiple terminals. In this way, the network device only needs to send the same second information to the terminals with overlapping power boost levels. For example, assuming that terminal 1 supports 4 power boost levels, the power boost level set corresponding to the 4 power boost levels is {1dB, 1.5dB, 2dB, 2.5dB}, terminal 2 supports 3 power boost levels, the power boost level set corresponding to the 3 power boost levels is {1dB, 2dB, 3dB}, terminal 3 supports 5 power boost levels, and the power boost level set corresponding to the 5 power boost levels is {0.5dB, 1dB, 2dB, 2.5dB, 3dB}, then there is an intersection between the power boost levels supported by terminal 1, terminal 2 and terminal 3 respectively, which can be recorded as {1dB, 2dB}. Therefore, when the network device configures the first power boost level for terminal 1, terminal 2 and terminal 3, it can randomly select a power boost level from the intersection of the power boost levels of the above three terminals {1dB, 2dB} as the first power boost level for terminal 1, terminal 2 and terminal 3. For example, the network device uses the randomly selected power boost level 1dB as the first power boost level configured for terminal 1, terminal 2 and terminal 3, and carries the indication information for indicating the power boost level 1dB in a common second information and sends it to terminal 1, terminal 2 and terminal 3 respectively.

[0082] It should be noted that when the network device configures the first power boost level for the terminal with an intersection in the power boost levels, it can not only randomly select a power boost level from the intersection as the first power boost level for the terminal with an intersection in the power boost levels, but also select a power boost level from the intersection as the first power boost level for the terminal with an intersection according to a certain power boost level selection rule. In the various embodiments of the present application, there is no specific limitation on the selection method of the first power boost level. For example, the minimum value (minimum power boost level) in the intersection can be used as the first power boost level configured by the network device for the terminal with an intersection in the power boost levels.

[0083] Optionally, the network device may carry the second information in the first downlink control information (DCI) and / or the second TB sent to the terminal; thereby, the efficiency of the network device in transmitting the second information may be improved to a certain extent, and signaling transmission overhead may be saved.

[0084] S303: When the network device determines that the terminal uses the first power boost level for uplink signal transmission, the network device selects a second power boost level from at least one power boost level based on the terminal's link measurement value. It should be noted that this step and step S304 below are both optional steps. The purpose of performing this step and step S304 below is to better adapt to changes in the network environment, adapt a more appropriate power boost level to the terminal, and improve communication reliability.

[0085] Among them, the second power boost level is different from the first power boost level, but both are used for the terminal to perform transmit power control. Optionally, the second power boost level can be any one of the other power boost levels except the first power boost level in at least one power boost level supported by the terminal. For example, assuming that the at least one power boost level supported by the terminal is: 1dB, 2dB, 3dB, 5dB, 7dB, and the first power boost level is 3dB, then when the network device determines that the terminal uses the first power boost level of 3dB to send an uplink signal, it can select a second power boost level from at least one power boost level based on the link measurement value obtained by measuring the communication link between the terminal, that is, the link measurement value of the terminal, for example, the second power boost level is 5dB. It should be noted that the above-mentioned link measurement value can be used to reflect the impact of the terminal using the first power boost level for power boosting on the demodulation performance of the network device.

[0086] Therefore, when the network device determines that the terminal uses the first power boost level to send uplink signals, it can determine the impact of the terminal power boost on the demodulation performance based on the link measurement value of the terminal. Once it is found that the demodulation performance can be improved by reconfiguring the power boost level for the terminal, a second power boost level different from the first power boost level can be selected from at least one power boost level and configured to the terminal; in this way, after the terminal controls the transmission power via the first power boost level, the network device measures (or measures in real time) the communication link between the terminal and the terminal, and thus selects a second power boost level different from the first power boost level from at least one power boost level based on the link measurement value of the terminal, thereby realizing the adaptation of the power boost level configuration and the link, that is, the network device can dynamically update the power boost level configuration of the terminal.

[0087] It should be noted that when the network device selects a second power boost level different from the first power boost level from at least one power boost level, the second power boost level can be randomly selected or selected according to a set second power boost level selection rule. In the embodiment of the present application, no specific limitation is made to the second power boost level selection rule. For example, still taking the example of at least one power boost level supported by the terminal being: 1dB, 2dB, 3dB, 5dB, 7dB, and the first power boost level being 3dB, when the network device determines that the terminal uses the first power boost level to send uplink signals, it can randomly select one power boost level from the four power boost levels (i.e., 1dB, 2dB, 5dB, 7dB) other than the first power boost level based on the link measurement value of the terminal as the second power boost level configured for the terminal, for example, the second power boost level is 3dB; for another example, the network device selects a power boost level greater than the first power boost level from the above four power boost levels (1dB, 2dB, 5dB, 7dB) as the second power boost level configured for the terminal, for example, the second power boost level is 5dB.

[0088] In addition, if the network device detects, after configuring the second power boost level for the terminal, that the link measurement value of the terminal when the terminal uses the second power boost level to send uplink signals is worse than the link measurement value when the terminal uses the first power boost level to send uplink signals, that is, the demodulation performance is worse, then the power boost level of the terminal can be reconfigured again according to the above power boost level selection and adaptation method until the link measurement value (or demodulation performance) of the terminal becomes better or better.

[0089] Optionally, if there is a mapping relationship between the power boost level and the demodulation performance, the network device can directly use the power boost level that can bring better demodulation performance as the second power boost level adapted to the terminal, that is, configure the power boost level corresponding to the better demodulation performance to the terminal. In this way, the communication quality between the terminal and the network device can be further improved.

[0090] It should be noted that when the network device determines that the terminal uses the first power boost level to send uplink signals, it can also select a second power boost level from at least one power boost level to adapt to the terminal based on other measurement results in addition to the link measurement value of the terminal (for example, the signal reception quality value obtained by the network device performing measurements on the uplink signal sent by the terminal). This application does not specifically limit the way in which the network device uses which communication parameters of the terminal as the judgment criteria to trigger the selection of the second power boost level.

[0091] S304: The network device sends the third information to the terminal. Correspondingly, the terminal receives the third information from the network device.

[0092] The third information is used to indicate a second power boost level. The second power boost level may be a power boost level different from the first power boost level selected from at least one power boost level based on measurement results (such as link measurement values ​​or signal reception quality values) obtained by the network device, such as a base station, performing measurements on the communication link between the terminals, or performing measurements on the uplink signals sent by the received terminals when the network device determines that the terminal uses the first power boost level to send uplink signals.

[0093] Optionally, the network device may carry the third information in the second DCI and / or third TB sent to the terminal.

[0094] Obviously, based on the transmission power control method recorded in the above steps S301 to S304, since the first power boost level is determined from at least one power boost level supported by the terminal, the power boost level value for the terminal to control the transmission power is no longer a fixed value, but can adapt to the power boost level value under different network environments, and can better adapt to the network environment, thereby improving the flexibility of power control; and, when the terminal adopts the configured first power boost level to send uplink signals, the network device can also select a second power boost level different from the first power boost level from at least one power boost level according to the measurement results of the network device (such as link measurement values ​​or signal reception quality values), so that the network device can dynamically update the power boost level configuration of the terminal to improve communication quality (such as demodulation performance) and further improve the flexibility of power control.

[0095] Referring to FIG4 , another method for controlling transmit power provided in an embodiment of the present application is shown. In the following description, the method is applied to the network architecture shown in FIG2 . The process of the method is described as follows.

[0096] S401: A terminal sends first information to a network device. Correspondingly, the network device receives the first information from the terminal.

[0097] The first information may also be referred to as the first relationship information, or may have other names, wherein the first relationship is used to indicate the correspondence between different value changes of the target radio frequency indicator and different transmission power increase levels. Therefore, the terminal can indicate the correspondence between different value changes of the target radio frequency indicator and different transmission power increase levels through the first information. Exemplarily, the first information may directly carry the correspondence between different value changes of different target radio frequency indicators and different transmission power increase levels. The first information may also carry a functional relationship formula for indicating the correspondence between different value changes of different target radio frequency indicators and different transmission power increase levels. Alternatively, the first information may also carry a correspondence identifier, which is used to identify the correspondence between different value changes of different target radio frequency indicators and different transmission power increase levels. This application does not limit this.

[0098] Optionally, the target radio frequency indicator may include but is not limited to at least one of the following: ACLR, EVM and IBE, that is, the target radio frequency indicator includes any one or combination of ACLR, EVM and IBE. It can be seen that since the values ​​or value ranges corresponding to ACLR, EVM and IBE (such as the upper limit of the value range) are related to the transmit power boost level of the terminal, the transmit power boost level adapted to the terminal can be determined more accurately based on the change in the radio frequency indicator parameters (any one of ACLR, EVM and IBE) or the radio frequency indicator parameter combination (at least two of ACLR, EVM and IBE) contained in the target radio frequency indicator over a period of time, so as to ensure that the terminal can improve the communication quality after transmit power control.

[0099] For example, when the target RF indicator is EVM, the different value changes of EVM can be: "The RF indicator value change of EVM under the 256QAM modulation order is 0.5% (the upper limit of the EVM value is relaxed from 3.5% to (or increased to) 4%)", "The RF indicator value change of EVM under the 256QAM modulation order is 1% (the upper limit of the EVM value is relaxed from 3.5% to (or increased to) 4.5%)", when the target RF indicator is ACLR, the different value changes of ACLR can be "The RF indicator value change of ACLR under PC3 is 1dB (the corresponding transmit power level value of ACLR is relaxed from 30dB to (or reduced to) 29dB)", "The RF indicator value change of ACLR under PC3 is 2dB (the corresponding transmit power level value of ACLR is relaxed from 30dB to (or reduced to) 28dB)".

[0100] For another example, when the target RF index is a combination of EVM and ACLR, the different value changes of EVM and ACLR can be: "The RF index value change of EVM under the 256QAM modulation order is 0.5% (the upper limit of EVM value is relaxed from 3.5% to (or increased to) 4%), and the RF index value change of ACLR under PC3 is 1dB (the corresponding transmission power level value of ACLR is relaxed from 30dB to (or reduced to) 29dB)", "The RF index value change of EVM under the 256QAM modulation order is 1% (the upper limit of EVM value is relaxed from 3.5% to (or increased to) 4.5%), and the RF index value change of ACLR under PC3 is 2dB (the corresponding transmission power level value of ACLR is relaxed from 30dB to (or reduced to) 28dB".

[0101] Therefore, taking the target RF indicator as EVM at 256QAM modulation or ACLR at PC3 as an example, that is, the target RF indicator is either of the two aforementioned RF indicators (i.e., EVM at 256QAM modulation and ACLR at PC3), combined with the above, as shown in Table 1, an example of the corresponding relationship between different value changes of the two aforementioned RF indicators and different transmit power increase levels.

[0102] Table 1: Example of the correspondence between different target RF indicator value changes and different transmit power increase levels

[0103] Furthermore, after obtaining the corresponding relationship recorded in Table 1 above, the network device can determine the corresponding transmit power boost level of the terminal under different target RF indicator value changes (i.e., the power boost level configured by the network device for the terminal). For example, when the target RF indicator is: EVM under 256QAM modulation order, and the corresponding value change is 0.5%, the corresponding transmit power boost level of the terminal is 1dB; for another example, when the target RF indicator is: ACLR under PC3, and the corresponding value change is 1dB, the corresponding transmit power boost level of the terminal is 1dB.

[0104] It should be noted that the correspondence relationship recorded in Table 1 above is based on the example of a single target RF indicator. However, in the embodiment of the present application, the type and number of target RF indicators are not limited. That is, the target RF indicator can also be an RF indicator such as IBE and MPR, and the target RF indicator may include two or more RF indicators. For example, the target RF indicator can be a RF indicator combination of "EVM under 256QAM modulation order and ACLR under PC3".

[0105] Optionally, when the target RF indicator includes two or more RF indicators, that is, the target RF indicator is a combination of different RF indicators, the correspondence between different value changes of the target RF indicator and different transmit power increase levels can be determined based on the correspondence between different value changes of each RF indicator and different transmit power increase levels. For example, assuming that the target RF indicator is a RF indicator combination of "EVM under 256QAM modulation order and ACLR under PC3", and the corresponding value change of EVM is 0.5% and the corresponding value change of ACLR is 1dB, then according to the EVM under 256QAM modulation order, when the corresponding value change is 0.5%, the corresponding transmit power increase level of the terminal is 1dB, and, according to the ACLR under PC3, when the corresponding value change is 1dB, the corresponding transmit power increase level of the terminal is 1dB, it can be obtained that the transmit power increase level corresponding to the terminal should also be 1dB.

[0106] For another example, assuming that the target RF indicator is the RF indicator combination of "EVM under 256QAM modulation order and ACLR under PC3", and the corresponding value change of EVM is 0.5% and the corresponding value change of ACLR is 2dB, then according to the EVM under 256QAM modulation order, when the corresponding value change is 0.5%, the corresponding transmit power increase level of the terminal is 1dB, and, under PC3, when the corresponding value change is 2dB, the corresponding transmit power increase level of the terminal is 2dB. It can be obtained that the transmit power increase level configured by the network device for the terminal at this time can be 1dB or 2dB; that is, one transmit power increase level is selected from the transmit power increase levels corresponding to multiple RF indicators as the transmit power increase level configured by the network device for the terminal.

[0107] Optionally, when the target RF indicator includes two or more RF indicators, that is, when the target RF indicator is a RF indicator combination, the correspondence between different value changes of the target RF indicator and different transmission power increase levels may not be determined by the correspondence between different value changes of each RF indicator and different transmission power increase levels, that is, it may be a re-established correspondence. For example, it is still assumed that the target RF indicator is the RF indicator combination of "EVM under 256QAM modulation order and ACLR under PC3", and the corresponding value change of EVM is 0.5% and the corresponding value change of ACLR is 1dB. Although the EVM under 256QAM modulation order and the corresponding value change are 0.5%, the corresponding transmit power increase level of the terminal is 1dB, and, the ACLR under PC3 and the corresponding value change are 1dB, the corresponding transmit power increase level of the terminal is 1dB, but at this time the transmit power increase level configured by the network device for the terminal can be 1.5dB, or other transmit power increase levels that are different from the transmit power increase levels corresponding to the value change of each RF indicator.

[0108] Optionally, the terminal may carry the first information in the UCI and / or the first TB sent to the network device.

[0109] S402: The network device sends second information to the terminal. Correspondingly, the terminal receives the second information from the network device.

[0110] Optionally, the second information is used to indicate a first power boost level, that is, a power boost level configured for the terminal by the network device based on the correspondence between different value changes of the target radio frequency indicator reported by the terminal and different transmit power boost levels. The first power boost level can be determined based on the detected value change of the terminal's current target radio frequency indicator and the aforementioned correspondence.

[0111] For example, assuming that the target RF indicator of the terminal is EVM under the 256QAM modulation order, if the network device detects that the value change of the current target RF indicator is 1% (the upper limit of the EVM value is relaxed from 3.5% to (or increased to) 4.5%), then combined with the corresponding relationship indicated by the first information, for example, the corresponding relationship recorded in Table 1, it can be determined that the first power boost level configured for the terminal is 2dB.

[0112] For another example, assuming that the target RF indicator of the terminal is the RF indicator combination of "EVM under 256QAM modulation order and ACLR under PC3", if the network device detects that the value change of the current target RF indicator is 1% (the upper limit of the EVM value is relaxed from 3.5% to (or increased to) 4.5%) and 2dB (the corresponding transmission power level of ACLR is relaxed from 30dB to (or reduced to) 28dB), then combined with the corresponding relationship indicated by the first information, the first power boost level configured for the terminal can be determined. For example, the first power boost level can be 2dB.

[0113] Optionally, the network device may carry the second information in the DCI and / or the second TB sent to the terminal.

[0114] Furthermore, after receiving the second information from the network device, the terminal can control its own transmission power according to the first power boost level indicated by the second information to improve communication quality, that is, to compensate for the problem of wireless transmission path loss affecting communication quality.

[0115] It should be noted that when the network device determines to use the first power boost level to send uplink signals, it can also continue to detect the target RF indicators of the terminal; in this way, once it is detected that the value change of the target RF indicator has changed, the power boost level can be reconfigured for the terminal according to the latest value change, that is, the network device configures the second power boost level corresponding to the latest value change of the target RF indicator to the terminal, thereby achieving effective control of the terminal's transmit power and further improving the flexibility of transmit power control.

[0116] It can be seen that based on the transmission power control method recorded in the above steps S401 to S402, in an embodiment of the present application, since the terminal reports the correspondence between different value changes of the target radio frequency indicator and different transmission power increase levels to the network device, the network device can configure a suitable power increase level for the terminal according to the value changes of the terminal's target radio frequency indicator detected in different time periods after obtaining the correspondence; in this way, it can not only adapt to the changing network environment, but also better adapt to the network environment, thereby improving the flexibility of power control, but also further improve the problem of deterioration of communication quality (such as demodulation performance) due to wireless transmission path loss.

[0117] Figure 5 shows a schematic diagram of the structure of a communication device provided in an embodiment of the present application. The communication device 500 may be the system architecture of the terminal described in the embodiment shown in Figure 3 or Figure 4, and is used to implement the method corresponding to the terminal in the above method embodiment. Alternatively, the communication device 500 may be the system architecture of the network device described in the embodiment shown in Figure 3 or Figure 4, and is used to implement the method corresponding to the network device in the above method embodiment.

[0118] The communication device 500 includes at least one processor 501. Processor 501 can be used for internal processing of the device, implementing certain control processing functions. Optionally, processor 501 includes instructions. Optionally, processor 501 can store data. Optionally, different processors can be independent devices, located in different physical locations, or on different integrated circuits. Optionally, different processors can be integrated into one or more processors, for example, on one or more integrated circuits.

[0119] Optionally, the communication device 500 includes one or more memories 503 for storing instructions. Optionally, data may also be stored in the memories 503. The processor and memory may be provided separately or integrated together.

[0120] Optionally, the communication device 500 includes a communication line 502 and at least one communication interface 504. Since the memory 503, the communication line 502 and the communication interface 504 are all optional, they are indicated by dotted lines in FIG5 .

[0121] Optionally, the communication device 500 may further include a transceiver and / or an antenna. The transceiver may be used to send information to or receive information from other devices. The transceiver may be referred to as a transceiver, a transceiver circuit, an input / output interface, etc., and is used to implement the transceiver function of the communication device 500 via an antenna. Optionally, the transceiver includes a transmitter and a receiver. For example, the transmitter may be used to generate a radio frequency signal from a baseband signal, and the receiver may be used to convert the radio frequency signal into a baseband signal.

[0122] The processor 501 may include a general-purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application.

[0123] Communication link 502 may include a pathway for transmitting information between the aforementioned components.

[0124] The communication interface 504 uses any transceiver or other device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area network (WLAN), wired access network, etc.

[0125] The memory 503 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device 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, an optical disc storage (including a compact 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 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 503 may exist independently and be connected to the processor 501 via the communication line 502. Alternatively, the memory 503 may be integrated with the processor 501.

[0126] The memory 503 is used to store computer-executable instructions for executing the solution of the present application, and the execution is controlled by the processor 501. The processor 501 is used to execute the computer-executable instructions stored in the memory 503, thereby implementing the steps performed by the terminal or network device described in the embodiment shown in Figure 3 or Figure 4.

[0127] Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application code, which is not specifically limited in the embodiments of the present application.

[0128] In a specific implementation, as an embodiment, the processor 501 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 5 .

[0129] In a specific implementation, as an embodiment, the communication device 500 may include multiple processors, such as processor 501 and processor 505 in Figure 5. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. The processor here may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0130] When the device shown in FIG5 is a chip, such as a terminal chip or a network device chip, the chip includes a processor 501 (and may also include a processor 505), a communication circuit 502, and a communication interface 504. Optionally, the chip may include a memory 503. Specifically, the communication interface 504 may be an input interface, a pin, or a circuit. The memory 503 may be a register, a cache, or the like. The processor 501 and the processor 505 may be a general-purpose CPU, a microprocessor, an ASIC, or one or more integrated circuits that execute a program for controlling the transmit power control method of any of the above-described embodiments.

[0131] The embodiment of the present application can divide the functional modules of the device according to the above-mentioned method example. 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-mentioned 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. For example, in the case of dividing each functional module according to each function, refer to Figure 6, which is a schematic diagram of a device. The device 600 can be the terminal or network device involved in the above-mentioned various method embodiments, or a chip in the terminal or a chip in the network device. The device 600 includes a processing unit 602 and a transceiver unit 601.

[0132] It should be understood that the device 600 can be used to implement the steps performed by the terminal or network equipment in the transmission power control method of the embodiment of the present application. The relevant features can refer to the embodiments shown in Figures 3 or 4 above and will not be repeated here.

[0133] Optionally, the functions / implementation processes of the transceiver unit 601 and the processing unit 602 in FIG6 may be implemented by the processor 501 in FIG5 calling computer-executable instructions stored in the memory 503. Alternatively, the functions / implementation processes of the processing unit 602 in FIG6 may be implemented by the processor 501 in FIG5 calling computer-executable instructions stored in the memory 503, and the functions / implementation processes of the transceiver unit 601 in FIG6 may be implemented by the communication interface 504 in FIG5.

[0134] Optionally, when the device 600 is a chip or circuit, the functions / implementation processes of the transceiver unit 601 may also be implemented via pins or circuits. Optionally, the transceiver unit 601 may include a transmitting unit and / or a receiving unit, where the transmitting unit is configured to implement the transmitting function and the receiving unit is configured to implement the receiving function; alternatively, the transceiver unit 601 may be an integral module capable of implementing the transmitting function and / or the receiving function. Optionally, the transceiver unit 601 may be implemented via a transceiver.

[0135] The present application also provides a computer-readable storage medium, which stores a computer program or instruction. When the computer program or instruction is executed, the method performed by the terminal or network device in the above-mentioned method embodiment is implemented. In this way, the functions described in the above embodiments can be implemented in the form of software functional units and sold or used as independent products. Based on this understanding, the technical solution of the present application can be essentially or in other words, the part that contributes to or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling 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 transmission power control method described in each embodiment of the present application. The storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0136] The present application also provides a computer program product, which includes: computer program code, which, when executed on a computer, enables the computer to execute the method executed by the terminal or network device in any of the aforementioned method embodiments.

[0137] An embodiment of the present application also provides a processing device, including a processor and an interface; the processor is used to execute the method executed by the terminal or network device involved in any of the above method embodiments.

[0138] The present application also provides a communication system that can be used to implement the method executed by a terminal or network device in any possible implementation of the above method embodiment. Exemplarily, the communication system has the architecture shown in Figure 1 or Figure 2.

[0139] The present application also provides a chip or chip system, which is coupled to a transceiver and is used to implement the method performed by a terminal or network device in any possible implementation of the above method embodiment or the method embodiment. Herein, "coupling" refers to the direct or indirect combination of two components with each other, which can be fixed or movable, and which allows flowing liquid, electricity, electrical signals or other types of signals to communicate between the two components. The chip system may include the chip. Specifically, the chip or chip system can be used to execute the method performed by the terminal or network device involved in any of the above method embodiments.

[0140] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, 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 the computer program instructions are loaded and executed on a computer, the process or function described in 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 device. The 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, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)).

[0141] The various illustrative logic units and circuits described in the embodiments of the present application can be implemented or operated by a general-purpose processor, a digital signal processor (DSP), an ASIC, a field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. The general-purpose processor can be a microprocessor, and optionally, the general-purpose processor can also be any conventional processor, controller, microcontroller or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

[0142] The steps of the methods or algorithms described in the embodiments of the present application can be directly embedded in hardware, software units executed by a processor, or a combination of the two. The software unit can be stored in RAM, flash memory, ROM, erasable programmable read-only memory (EPROM), EEPROM, registers, hard disks, removable disks, CD-ROMs, or other storage media in any form in the art. Exemplarily, the storage medium can be connected to the processor so that the processor can read information from the storage medium and can write information to the storage medium. Alternatively, the storage medium can also be integrated into the processor. The processor and storage medium can be arranged in an ASIC, which can be arranged in a terminal. Alternatively, the processor and storage medium can also be arranged in different components in the terminal.

[0143] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0144] The contents of the various embodiments of this application can refer to each other. If there is no special explanation and logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0145] It is understood that in the embodiments of the present application, the terminal and / or network device may perform some or all of the steps in the embodiments of the present application. These steps or operations are merely examples. In the embodiments of the present application, other operations or variations of various operations may also be performed. In addition, the various steps may be performed in a different order than those presented in the embodiments of the present application, and it is possible that not all of the operations in the embodiments of the present application need to be performed.

Claims

1. A method for controlling transmission power, characterized in that: Applied to terminals, including: Sending first information to a network device, where the first information is used to indicate at least one power boost level supported by the terminal; Receive second information from the network device, where the second information is used to indicate a first power boost level, where the first power boost level is any one of the at least one power boost level, and the first power boost level is used for the terminal to perform transmit power control.

2. The method according to claim 1, characterized in that Also includes: Receive third information from the network device, where the third information is used to indicate a second power boost level. The second power boost level is selected from the at least one power boost level according to the link measurement value of the terminal when the network device determines that the terminal uses the first power boost level to send an uplink signal, and the second power boost level is different from the first power boost level.

3. The method according to claim 1 or 2, characterized in that The first power boost level is a minimum value among the at least one power boost level.

4. A method for controlling transmission power, characterized in that: Applied to network equipment, including: receiving first information from a terminal, where the first information is used to indicate at least one power boost level supported by the terminal; Second information is sent to the terminal, where the second information is used to indicate a first power boost level, where the first power boost level is any one of the at least one power boost level, and the first power boost level is used for the terminal to perform transmit power control.

5. The method according to claim 4, characterized in that Also includes: Sending third information to the terminal, the third information being used to indicate a second power boost level, the second power boost level being selected from the at least one power boost level according to the link measurement value of the terminal when the network device determines that the terminal adopts the first power boost level to send an uplink signal, and the second power boost level is different from the first power boost level.

6. The method according to claim 4 or 5, characterized in that The first power boost level is a minimum value among the at least one power boost level.

7. A method for controlling transmission power, characterized in that: Applied to terminals, including: Sending first information to the network device, where the first information is used to indicate a correspondence between different value changes of the target radio frequency indicator and different transmit power increase levels; Receive second information from the network device, where the second information is used to indicate a first power boost level, where the first power boost level is used for the terminal to perform transmit power control, and where the first power boost level is determined based on the detected change in the value of the target radio frequency indicator of the terminal and the corresponding relationship.

8. The method according to claim 7, characterized in that The target radio frequency indicator includes at least one of the following: adjacent channel leakage ratio ACLR, amplitude vector error EVM, and in-band leakage IBE.

9. A method for controlling transmission power, characterized in that: Applied to network equipment, including: Receiving first information from a terminal, where the first information is used to indicate a correspondence between different value changes of a target radio frequency indicator and different transmit power increase levels; Sending second information to the terminal, the second information is used to indicate a first power boost level, the first power boost level is used for the terminal to perform transmit power control, and the first power boost level is determined based on the detected value change of the current target RF indicator of the terminal and the corresponding relationship.

10. The method according to claim 9, characterized in that The target radio frequency indicator includes at least one of the following: adjacent channel leakage ratio ACLR, amplitude vector error EVM, and in-band leakage IBE.

11. A communication device, characterized in that: The communication device comprises a processing unit and a transceiver unit; The transceiver unit is used to send and receive information; The processing unit is used to execute the method according to any one of claims 1 to 3, or execute the method according to any one of claims 7 to 8 through the transceiver unit.

12. A communication device, characterized in that: The communication device comprises a processing unit and a transceiver unit; The transceiver unit is used to send and receive information; The processing unit is used to execute the method according to any one of claims 4 to 6, or execute the method according to any one of claims 9 to 10 through the transceiver unit.

13. A communication device, characterized in that: The communication device includes a processor and a memory, the memory stores a computer program, and the processor is used to execute the computer program stored in the memory, so that the communication device performs the method according to any one of claims 1 to 3, or the communication device performs the method according to any one of claims 4 to 6, or the communication device performs the method according to any one of claims 7 to 8, or the communication device performs the method according to any one of claims 9 to 10.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, which, when executed on a computer, enables the computer to execute the method according to any one of claims 1 to 3, or enables the computer to execute the method according to any one of claims 4 to 6, or enables the computer to execute the method according to any one of claims 7 to 8, or enables the computer to execute the method according to any one of claims 9 to 10.

15. A chip system, characterized in that: The method comprises a processor and an interface, wherein the processor is used to receive instructions from the interface and execute them, and when the processor executes the instructions, the method according to any one of claims 1 to 3 is implemented, or the method according to any one of claims 4 to 6 is implemented, or the method according to any one of claims 7 to 8 is implemented, or the method according to any one of claims 9 to 10 is implemented.

16. A communication system, characterized in that: Including terminals and network equipment; The terminal is used to execute the method according to any one of claims 1 to 3, and the network device is used to execute the method according to any one of claims 4 to 6; or The terminal is used to execute the method according to any one of claims 7 to 8, and the network device is used to execute the method according to any one of claims 9 to 10.

17. A computer program product, characterized in that The computer program product comprises instructions, which, when executed, implement the method according to any one of claims 1 to 3, or the method according to any one of claims 4 to 6, or the method according to any one of claims 7 to 8, or the method according to any one of claims 9 to 10.

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