Method, device and system for controlling sending power

Abstract

The invention relates to a sending power control method, device and system. And the terminal sends first information to the network device, wherein the first information is used for indicating at least one power uplift level supported by the terminal. And the terminal receives second information from the network device, the second information being used for indicating a first power uplift level, the first power uplift level being any one of the at least one power uplift level, and the first power uplift level being used for the terminal to perform transmission power control. In the embodiment of the invention, the network equipment flexibly selects one power uplift level from at least one power uplift level as the power uplift level configured to the terminal according to conditions such as a network environment, so that the terminal does not uplift the sending power at a fixed value any more; the power uplift level value of the terminal for sending power control can adapt to different network environments, so that the flexibility of power control is improved, and the communication quality can be well ensured.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a method, apparatus, and system for controlling transmission power. Background Art

[0002] In a wireless communication system, due to the transmission characteristics of electromagnetic waves, there will be a problem of wireless transmission path loss. To avoid the problem that the communication quality deteriorates due to wireless transmission path loss, usually the transmitting end will increase the transmission power to improve the demodulation performance of the receiving end, thereby making up for the impact of wireless transmission path loss on the communication quality.

[0003] Currently, the transmitting end usually increases the transmission 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, each time the transmitting end increases the power, it can only increase by a fixed value, lacking the flexibility of power boost adaptation to different network environments, and cannot well adapt to the network environment, and thus cannot better ensure the communication quality. Summary of the Invention

[0004] Embodiments of this application provide a method, apparatus, and system for controlling transmission power, which are used to improve the flexibility of power boost control.

[0005] In a first aspect, a method for controlling transmission power is provided. This 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 that can implement the functions of the terminal, and the chip system or functional module is, for example, disposed in the terminal. In the following description, it is taken as an example that this method is executed by the terminal. The method includes: 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; receiving second information from the network device, where 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, and the first power boost level is used for the terminal to perform transmission power control.

[0006] In embodiments of this application, the terminal can send at least one power boost level that it can support to the network device. In this way, after the network device receives the at least one power boost level, it can configure a first power boost level for the terminal to be used for transmission power control according to 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 levels, to a certain extent, the problem that the terminal can only increase by a fixed value each time it increases the power, lacks the flexibility of power boost adaptation to different network environments, and cannot well adapt to the network environment is solved, and thus the flexibility of power control is improved and the communication quality can be better ensured.

[0007] In an alternative embodiment, the method may further include: receiving third information from the network device, where the third information is used to indicate a second power boost level, and the second power boost level is selected by the network device from the at least one power boost level according to the link measurement value of the terminal when determining that the terminal uses the first power boost level for uplink signal transmission, 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 measures in real time) the communication link of the terminal, and thus selects, from the at least one power boost level, a second power boost level different from the first power boost level according to the link measurement value of the terminal, realizing the adaptability of the power boost level configuration to the link, that is, the network device can dynamically update and configure the power boost level of the terminal.

[0008] In an alternative 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 transmit power control (boost) 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 foregoing at least one power boost level, such as the randomly selected first power boost level is relatively large, at this time, if the terminal performs transmit power control according to the relatively large first power boost level configured by the network device, it will greatly affect the communication quality and even fail to achieve the transmit power boost control. Therefore, selecting the minimum value among the at least one power boost level as the first power boost level and configuring it for the terminal can effectively ensure the smooth progress of the terminal power control.

[0009] Second aspect, another method for controlling transmission power is provided. This method can be executed by a network device, or by other devices including network device functions, or by a chip system (the chip system includes a chip) or other functional modules, and the chip system or functional module can implement the functions of the network device. The chip system or functional module is, for example, disposed 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 make any limitation thereto. In the following description, it is taken as an example that this method is executed by the network device. The method includes: receiving first information from a terminal, where the first information is used to indicate at least one power boost level supported by the terminal; sending second information to the terminal, where 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, and the first power boost level is used for the terminal to perform transmission power control.

[0010] In an alternative embodiment, the method may further include: sending third information to the terminal, where the third information is used to indicate a second power boost level, and 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.

[0011] In an alternative embodiment, the first power boost level may be the minimum value of the at least one power boost level.

[0012] Regarding the technical effects brought by the second aspect or various alternative embodiments, reference can be made to the description of the technical effects of the first aspect or the corresponding embodiments, and the repeated parts will not be elaborated.

[0013] Third aspect, yet another method for controlling transmission power is provided. This method can be executed by a terminal, or by other devices including terminal functions, or by a chip system (or a chip) or other functional modules, and the chip system or functional module can implement the functions of the terminal. The chip system or functional module is, for example, disposed in the terminal. In the following description, it is taken as an example that this method is executed by the terminal. The method includes: sending first information to a network device, where the first information is used to indicate the correspondence between different variation amounts of target radio frequency metrics and different transmission power boost levels; receiving second information from the network device, where 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 is determined according to the detected variation amount of the current target radio frequency metric of the terminal and the correspondence.

[0014] In the embodiment of the present application, since the terminal reports the correspondence between different value changes of the target radio frequency index and different transmission power boost levels to the network device, after obtaining the correspondence, the network device can configure an appropriate power boost level for the terminal according to the value change of the target radio frequency index of the terminal detected in different time periods. In this way, not only can it adapt to the changing network environment and better adapt to the network environment, thereby improving the flexibility of power control, but also it can further improve the problem that the communication quality (such as demodulation performance) deteriorates due to the wireless transmission path loss.

[0015] In an alternative embodiment, the target radio frequency index may include, but is not limited to, at least one of the following: adjacent channel leakage ratio (ACLR), error vector magnitude (EVM), and in-band emission (IBE). Since there is a certain relationship between the values or value ranges corresponding to ACLR, EVM, and IBE respectively and the transmission power boost level of the terminal, in this way, according to the change amount of the radio frequency index parameters (any one of ACLR, EVM, and IBE) or the combination of radio frequency index parameters (at least two of ACLR, EVM, and IBE) included in different radio frequency indexes within a period of time, the appropriate transmission power boost level corresponding to the terminal can be determined more accurately to ensure that the communication quality can be improved after the terminal performs transmission power control.

[0016] Fourthly, another method for controlling the transmission power is provided. This method can be executed by the network device, or by other devices including the functions of the network device, or by a chip system (the chip system includes a chip) or other functional modules. The chip system or functional module can implement the functions of the network device. The chip system or functional module is, for example, set 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. The present application does not make any limitations in this regard. In the following description, an example is given where this method is executed by the network device. The method includes: receiving first information from the terminal, where the first information is used to indicate the correspondence between different value changes of the target radio frequency index and different transmission power boost levels; sending second information to the terminal, where 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 is determined according to the detected value change of the current target radio frequency index of the terminal and the correspondence.

[0017] In an alternative embodiment, the target radio frequency metric may include, but is not limited to, at least one of the following: ACLR, EVM, IBE.

[0018] Regarding the technical effects brought by the fourth aspect or various alternative embodiments, reference may be made to the description of the technical effects of the third aspect or the corresponding embodiments, and repeated parts will not be elaborated.

[0019] In a fifth aspect, a communication device is provided. The communication device may be the terminal described in the first aspect or the third aspect above. The communication device may also be other entities including the functions of the above terminal. For example, the communication device is other devices with terminal functions, or a chip system (or, chip) or other functional modules, and the chip system or functional module can implement the functions of the terminal, and the chip system or functional module is, for example, disposed in the terminal. In an alternative implementation, the communication device includes a radio frequency device and a baseband device. In another alternative 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 the sending function and the receiving function. When the transceiver unit implements the sending function, it can be referred to as a sending unit (sometimes also referred to as a sending module), and when the transceiver unit implements the receiving function, it can be referred to as a receiving unit (sometimes also referred to as a receiving module). The sending unit and the receiving unit may be the same functional module, and this functional module is called the transceiver unit, and this functional module can implement the sending function and the receiving function; or, the sending unit and the receiving unit may be different functional modules, and the transceiver unit is a general term for these functional modules.

[0020] In an alternative embodiment, the transceiver unit (or, the sending unit) is configured to send first information to a network device, where 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 configured to receive second information from the network device, where 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, it is a power boost level selected by the processing unit or the 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.

[0021] In an alternative embodiment, the transceiver unit (or, the receiving unit) is configured to receive third information from the network device, where the third information is used to indicate a second power boost level, and the second power boost level is selected by the processing unit (or processing module) from the at least one power boost level according to the link measurement value of the terminal when it is determined that the terminal uses the first power boost level for uplink signal transmission, and the second power boost level is different from the first power boost level.

[0022] In an alternative embodiment, the transceiver unit (or, the transmitting unit) is configured to send first information to the network device, where the first information is used to indicate the correspondence between different variation amounts of target radio frequency metrics and different transmission power boost levels; the transceiver unit (or, the receiving unit) is configured to receive second information from the network device, where 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 transmit power control, and the first power boost level may be determined by the processing unit (or processing module) according to the detected variation amount of the current target radio frequency metric value of the terminal and the correspondence.

[0023] In an alternative embodiment, the communication device further includes a storage unit (sometimes also referred to as a storage module), and the processing unit is coupled to the storage unit and executes programs or instructions in the storage unit, enabling the processing unit to control or execute, through the above-mentioned transceiver unit, the methods described in the first aspect or the third aspect above.

[0024] In a sixth aspect, a communication device is provided. The communication device may be the network device described in the second aspect or the fourth aspect above. The communication device may also include other entities with the functions of the above-mentioned network device. For example, the communication device is another device with the functions of a network device, or a chip system (or, a chip) or other functional modules, and the chip system or functional module can implement the functions of a network device, and the chip system or functional module is, for example, disposed in a network device. In an alternative implementation, the communication device includes a baseband device and a radio frequency device. In another alternative 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 description in the fifth aspect.

[0025] In an alternative embodiment, the transceiver unit (or, the receiving unit) is configured to receive first information from a terminal, where the first information is used to indicate at least one power boost level supported by the terminal; the transceiver unit (or, the transmitting unit) is configured to send second information to the terminal, where 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, it is 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.

[0026] In an alternative embodiment, the transceiver unit (or, the transmitting unit) is configured to send third information to the terminal, where the third information is used to indicate a second power boost level, and the second power boost level is selected by the processing unit (or processing module) from the at least one power boost level according to the link measurement value of the terminal when it is determined 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.

[0027] In an alternative embodiment, the transceiver unit (or, the receiving unit) is configured to receive first information from a terminal, where the first information is used to indicate the correspondence between different variation amounts of target radio frequency metrics and different transmit power boost levels; the transceiver unit (or, the transmitting unit) is configured to send second information to the terminal, where 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 transmit power control, and the first power boost level may be determined by the processing unit (or processing module) according to the detected variation amount of the current target radio frequency metric of the terminal and the correspondence.

[0028] In an alternative embodiment, the communication device further includes a storage unit (sometimes also referred to as a storage module), and the processing unit is coupled to the storage unit and executes the programs or instructions in the storage unit, so that the processing unit can control or execute, through the above-mentioned transceiver unit, the methods described in the second aspect or the fourth aspect above.

[0029] In a seventh aspect, a communication device is provided. The communication device may be a terminal, or a chip or chip system for a terminal. The communication device includes a communication interface and a processor. Optionally, it further includes 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 methods performed by the terminal in the above aspects.

[0030] 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. Optionally, a memory is further included. 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 instruction through the communication interface, the communication device executes the methods performed by the network device in the above aspects.

[0031] In a ninth aspect, a communication system is provided, including a terminal and a network device. The terminal is used to execute the method described in the first aspect above, and the network device is used to execute the method described in the second aspect above; or, the terminal is used to execute the method described in the third aspect above, and the network device is used to execute the method described in the fourth aspect above. Optionally, the communication system may further include other devices or apparatuses, for example, other apparatuses in addition to the terminal and the network device, and there is no limitation thereto.

[0032] In a tenth aspect, a computer-readable storage medium is provided. The computer-readable storage medium is used to store a computer program or instruction. When the computer program or instruction is run, the methods performed by the terminal and / or the network device in the first to fourth aspects above are implemented.

[0033] In an eleventh aspect, a computer program product including instructions is provided. When the computer program or instruction is run on a computer, the methods described in the first to fourth aspects above are implemented.

[0034] In a twelfth aspect, a chip system is provided, including a processor and an interface. The processor is used to call and run an instruction from the interface, so that the chip system implements the methods described in the first to fourth aspects above. Description of the Drawings

[0035] Figure 1 A schematic diagram of a network architecture applied to an embodiment of this application;

[0036] Figure 2 Another schematic diagram of a network architecture applied to an embodiment of this application;

[0037] Figure 3 A flowchart of a method for controlling transmission power provided by an embodiment of this application;

[0038] Figure 4 A flowchart of another method for controlling transmission power provided by an embodiment of this application;

[0039] Figure 5 A schematic diagram of the structure of a communication device provided by an embodiment of this application;

[0040] Figure 6 Schematic diagram of another device provided by an embodiment of the present application. Detailed implementation manners

[0041] In order to make the objectives, 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.

[0042] In the embodiments of the present application, unless otherwise specified, for the number of nouns, it means "singular noun or plural noun", that is, "one or more". "At least one" means one or more, and "a plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after. For example, A / B means: A or B. "At least one of the following (items)" or its similar expressions refer to any combination of these items, including any combination of single item (s) or plural item (s). 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, and c can be single or multiple.

[0043] The ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects and are not used to limit the size, content, order, time sequence, 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 differences in the sender / receiver, format, content, size, application scenario, priority, or importance of these two pieces of information. In addition, for the numbering of steps in each of the embodiments introduced in the present application, in some cases, it is only for distinguishing different steps and is not used to limit the sequence of steps.

[0044] Hereinafter, some terms or concepts in the embodiments of the present application will be explained to facilitate the understanding of those skilled in the art.

[0045] (1) In the embodiments of the present application, the terminal is a device with wireless transceiver functions, 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 (such as a communication module, a modem, or a chip system, etc.) built into the above devices. The terminal is used to connect people, things, 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 (D2D) communications, vehicle-to-everything (V2X) communications, 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 wearables, smart transportation, smart city, drones, robots, indoor commercial scenarios (such as mobile phone screen mirroring, file sharing, and video transmission from a mobile phone to a VR headset), etc. When the terminal is applied to V2X, it can also be called a V2X device. For example, a smart car (smart car or intelligent car), a digital car, an unmanned car (unmanned car or driverless car or pilotless car or automobile), a self-driving car (self-driving car or autonomous car), a pure electric vehicle (pure EV or Battery EV), a hybrid electric vehicle (HEV), a range extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV), a new energy vehicle, a roadside unit (RSU). The terminal can also be a device in D2D communications, such as an electricity meter, a water meter, etc.

[0046] In addition, in the embodiments of the present application, the terminal may 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, so as to realize an intelligent network of human-machine interconnection and thing-thing interconnection.

[0047] Any of the various terminals introduced above, if located on a vehicle (for example, placed inside or installed inside the vehicle), can be considered an in-vehicle terminal. An in-vehicle terminal is also called an on-board unit (OBU) for example. The terminal of the present application may also be an in-vehicle module, in-vehicle component, in-vehicle chip, or in-vehicle unit built into the vehicle as one or more components or units. The vehicle can implement the method of the present application through the built-in in-vehicle module, in-vehicle component, in-vehicle chip, or in-vehicle unit.

[0048] The terminal may sometimes be referred to as a user equipment (UE), terminal device, access station, UE station, remote station, wireless communication device, or user device, etc.

[0049] In the embodiments of the present application, the communication device for implementing the terminal function may be the terminal or a communication device capable of supporting the terminal to implement this function, such as a chip system. This communication device may be installed in the terminal. In the technical solution provided in the embodiments of the present application, the communication device for implementing the terminal function is taken as an example of the terminal to describe the technical solution provided in the embodiments of the present application.

[0050] (2) The network device in the embodiments of the present application includes, for example, an access network device and / or a core network device. The access network device is a device with wireless transceiver functions and is used to communicate with the terminal. The access network device includes, but is not limited to, a base station (base transceiver station (BTS), Node B, evolved node B (eNodeB) / eNB, or next generation node B (gNodeB) / gNB), a transmission reception point (TRP), a base station evolved by the 3rd generation partnership project (3GPP) in the future, an access node in a wireless fidelity (Wi-Fi) system, a wireless relay node, a wireless backhaul node, etc. The base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, etc. Multiple base stations can support a network of the same access technology or networks of different access technologies. The base station can include one or more co-located or non-co-located transmission and reception points. The access network device can also be a radio controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The access network device can also be a base station control device. The access network device can also be other devices in the access network such as a server, and the present application does not limit this. For example, the network device in V2X technology can be a road side unit (RSU). The following takes the base station as an example to illustrate the access network device. The base station can communicate with the terminal or 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 charging. The device names for implementing core network functions in systems of different access technologies can be different, and the embodiments of the present application do not limit this.Taking the 5th generation (5G) mobile communication technology system as an example, the core network devices include: access and mobility management function (AMF), session management function (SMF), policy control function (PCF), user plane function (UPF), etc.

[0051] Among them, in the CU-DU architecture, the access network devices may include one or more of the logical network elements such as a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and the DU may be separately provided, or may also be included in the same network element, such as a baseband unit (BBU). The RU may be included in a radio frequency device or a radio frequency unit, such as being included in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0052] In different systems, the 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, the CU may also be referred to as an open CU (O-CU), the DU may also be referred to as an O-DU, the CU-CP may also be referred to as an O-CU-CP, the CU-UP may also be referred to as an O-CU-UP, and the RU may also be referred to as an O-RU. For the convenience of description, in the embodiments of the present application, the CU, CU-CP, CU-UP, DU, and RU are taken as examples for description. Any one 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.

[0053] Optionally, in various embodiments of the present application, the actions performed by a cell (such as sending information to a UE, receiving information from a UE, or processing information, etc.) can be specifically performed by the network device providing the cell. Optionally, in various embodiments of the present application, if the network device has 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 when the network device sends information to a UE, specifically, it can be the DU included in the network device that sends information to the UE; when the network device receives information from a UE, specifically, it can be the DU included in the network device that receives information from the UE. Additionally, if the network device has 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 when the network device sends information to another network device, specifically, it can be the CU or the CU-CP included in the network device that sends information to the CU or the CU-CP of another network device; when the network device receives information from another network device, specifically, it can be the CU or the CU-CP included in the network device that receives information from the CU or the CU-CP of another network device.

[0054] In the embodiments of the present application, the communication device for implementing the functions of the network device can be the network device or a device capable of supporting the network device to implement such functions, such as a chip system, and this device can be installed in the network device. In the technical solution provided in the embodiments of the present application, taking the device for implementing the functions of the network device being the network device as an example, the technical solution provided in the embodiments of the present application is described.

[0055] (3) EVM: It can also be referred to as vector amplitude error or error vector magnitude, which refers to the difference between the theoretical waveform and the actually received waveform, and is the root mean square value of the ratio of the average error vector signal power to the average reference signal power, reflecting the error between the measured signal (for example, the signal actually sent by the terminal) and the reference signal.

[0056] From the RF perspective, the factors that cause EVM deterioration at least include the non-linearity of the power amplifier (PA), in-phase / quadrature (I / Q) imbalance, phase noise, and the noise of the transceiver. Therefore, EVM is to ensure that the modulated symbols sent by the terminal will not be overly distorted, thus affecting the demodulation of network devices. 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 for quadrature phase shift keying (QPSK) is 17.5%, the upper limit of the EVM value for 16 quadrature amplitude modulation (QAM) is 12.5%, and the upper limit of the EVM value for 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 the index of the RF parameter EVM.

[0057] (4) IBE: It refers to the degree of energy leakage of the transmitted signal occupying the scheduled spectrum resource to the non-scheduled spectrum resource on the in-band spectrum resource.

[0058] (5) ACLR: It refers to the ratio of the transmitted signal strength on the in-band spectrum resource to the energy leakage of the out-of-band spectrum resource. Among them, under different transmit power classes (PC), the corresponding transmit power class values of ACLR are different. PC is used to indicate that the relevant device (such as a terminal) operates at the maximum transmit power (i.e., the transmit power class value) specified by the corresponding power class (which can be denoted as: PCn, and the value of 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).

[0059] For example, the corresponding transmit power class value of ACLR under PC1 is 37 decibels (dB), the corresponding transmit power class value of ACLR under PC1.5 is 31 dB, the corresponding transmit power class value of ACLR under PC2 is 31 dB, and the corresponding transmit power class value of ACLR under PC3 is 30 dB. Optionally, in various embodiments of the present application, the corresponding transmit power class values of ACLR under different PCs can also be referred to as the index of the RF parameter ACLR.

[0060] (6) Maximum Power Reduction (MPR): It refers to the reduction of the transmission power of the terminal allowed by the protocol based on the transmission PC, that is, the reduction amount of the maximum transmission power allowed for the terminal (i.e., the transmission power level value corresponding to the PCn of the terminal), so as to reserve a certain margin for the terminal to meet radio frequency indicators such as EVM, ACLR, and IBE under any configuration; thus, in some cases (for example, at the critical point between the linear region and the non-linear region of the PA), the communication quality and network stability are ensured.

[0061] Optionally, the value of 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 for data transmission. Among them, the type of OFDM may include discrete Fourier transform-spread-orthogonal frequency division multiplexing (DFT-S-OFDM) and cyclic prefix orthogonal frequency division multiplexing, and the type of RB may include in-band RB, out-of-band RB, and edge RB.

[0062] Therefore, for example, when the terminal adopts DFT-S-OFDM, QPSK, and in-band RB, the value of MPR is 0 dB; when the terminal adopts DFT-S-OFDM, 16QAM, and edge RB, the upper limit of the value range of MPR is 3.5 dB, that is, MPR ≤ 3.5 dB; it should be noted that the value of MPR or the upper limit of the value range does not necessarily change when any one of the MO of the signal, the type of OFDM, and the type of RB changes, that is, if one or more of the MO of the signal, the type of OFDM, and the type of RB change, the value of MPR or the upper limit of the value range may not change.

[0063] Currently, in a wireless communication system, due to the transmission characteristics of electromagnetic waves, there is a problem of wireless transmission path loss; among them, for the uplink communication with relatively limited transmission power, the wireless transmission path loss will have a more serious impact. Therefore, in order to avoid the problem that the communication quality deteriorates due to the wireless transmission path loss, usually the transmitting end (such as a terminal) will increase the transmission power to improve the demodulation performance of the receiving end (such as a network device), thereby compensating for the impact of the wireless transmission path loss on the communication quality.

[0064] Although various transmission power increase schemes for different frequency ranges (FR) have been developed, the power increase 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 increases the power; among them, FR may include but is not limited to: FR1 (410 MHz - 7125 MHz) and FR2-1 (24250 MHz - 52600 MHz). Exemplarily, a transmission power control method stipulates that under preset conditions, the receiving end can configure a power increase value (such as 1 dB) for the transmitting end according to IBE. The preset conditions include: the transmitting end uses QPSK modulation, the resource block (RB) for data transmission is an RB with MPR = 0, and the receiving end configures the default network signaling (NS) value, for example, the default NS can specifically be: NS_200. It can be seen that since the transmitting end can only increase the power by a fixed value each time it increases the power, it lacks the flexibility of power increase adapt to different network environments, cannot well adapt to the network environment, and thus cannot better ensure the communication quality.

[0065] In view of this, in the embodiments of the present application, the terminal can send at least one power increase level that it can support to the network device. In this way, after the network device receives the at least one power increase level, it can flexibly select a power increase level from the at least one power increase level as the power increase level configured for the terminal according to the network environment and other conditions, thereby to a certain extent solving the problem that the transmitting end can only increase the power by a fixed value each time it increases the power, lacking the flexibility of power increase adapt to different network environments, and cannot well adapt to the network environment, and further improving the flexibility of power control (increase) and being able to better ensure the communication quality. Exemplarily, assume that the terminal reports to the network device the power increase levels it supports as: 1 dB, 2 dB, 3 dB, 4 dB. After the network device obtains the power increase levels that the terminal can support, it can select a power increase level from the above 4 power increase levels as the power increase level configured for the terminal according to the currently measured link quality, received signal quality and other conditions. For example, configure the power increase level for the terminal to be 3 dB.

[0066] The technical solution provided by the embodiments of the present application can be applied to the 4th generation (4G) mobile communication technology system, such as the Long Term Evolution (LTE) system, or can be applied to the 5G system, such as the New Radio (NR) system, or can also be applied to the next generation mobile communication system or other similar communication systems, such as the 6th generation (6G) mobile communication technology system, 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 solution provided by the embodiments of the present application can be implemented. Therefore, the specific type of the communication system is not limited.

[0067] Refer to Figure 1 shown, which is a schematic diagram of a network architecture applied in the embodiments of the present application. As Figure 1 shown, the network architecture includes a network device and at least one terminal. The terminal can be in a fixed position or movable. The terminal can be connected to the network device wirelessly. 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 operate in the NR system, and the terminal and the network device can communicate through the NR system. It should be noted that Figure 1 This is just a schematic diagram. Other network devices may also be included in the mobile communication system. For example, wireless relay devices and wireless backhaul devices may also be included, which are not drawn in Figure 1 . The embodiments of the present application do not limit the number of network devices and terminals included in the mobile communication system.

[0068] For another example, refer to Figure 2 shown, which is another schematic diagram of a network architecture applied in the embodiments of the present application. As Figure 2 shown, the network device and terminals 1 to 6 form a wireless communication network. In this wireless communication network, terminals 1 to 6, as entities for sending uplink data, can transmit uplink channels (the uplink channels can carry uplink data) to the network device. 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 this communication system, the network device can send downlink data to terminals 1, 2, 3, and 5, and terminal 5 can also send downlink data to terminals 4 and 6. It should be understood that Figure 2 In the network architecture shown, only one network device is taken as an example for illustration, but the embodiments of the present application are not limited to this. For example, more network devices may also be included in the network architecture; similarly, more terminals may also be included in the network architecture, and other devices may also be included, Figure 2 which are not shown.

[0069] To better introduce the embodiments of the present application, the following describes a method for controlling transmission power provided by the embodiments of the present application with reference to the accompanying drawings. Refer to Figure 3 As shown, it is a method for controlling transmission power provided by the embodiments of the present application. In the following description, taking the application of this method in the Figure 2 network architecture shown as an example for illustration. The process of this method is introduced as follows.

[0070] S301. The terminal sends the first information to the network device. Correspondingly, the network device receives the first information from the terminal.

[0071] The first information can also be referred to as terminal power boost level support information, or it can have other names. Therefore, the terminal can indicate at least one power boost level supported by the terminal through the first information. For example, in one indication method, the first information includes power boost level identifiers corresponding to the at least one supported power boost level respectively. The power boost level identifier is, for example, the index of the corresponding power boost level. In this way, the network device can directly determine the power boost levels corresponding to the at least one supported power boost level respectively through the indexes of the at least one power boost level included in the first information.

[0072] There may be no identical power boost levels among the above at least one power boost level. Exemplarily, the terminal sends the first information to the network device, and the first information indicates 4 power boost levels supported by the terminal. For example, the set of power boost levels corresponding to the 4 power boost levels is {1dB, 1.5dB, 2dB, 2.5dB}; it can be seen that each power boost level can be different.

[0073] 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 transmitting the first information can be improved to a certain extent, and the signaling transmission overhead can be saved.

[0074] S302. The network device sends the second information to the terminal. Correspondingly, the terminal receives the second information from the network device.

[0075] 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. Among them, 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 among the at least one power boost level, or the first power boost level can also be the minimum value among the at least one power boost level, or the first power boost level is another power boost level among the at least one power boost level other than the maximum value and the minimum value. Exemplarily, assume that the at least one power boost level supported by the terminal is: 1dB, 2dB, 3dB, and 4dB. Therefore, after the network device receives the foregoing 4 power boost levels supported by the terminal, it can randomly select a power boost level from the foregoing 4 power boost levels as the first power boost level configured for the terminal. For example, the first power boost level can be 3dB.

[0076] It can be understood that the network device, such as a base station, can perform measurements on the communication link with the terminal during a recent period of time, or perform measurements on the uplink signal sent by the terminal received, etc. According to the measurement results (such as link measurement values or signal reception quality values), select a suitable power boost level from the foregoing at least one power boost level as the first power boost level configured for the terminal.

[0077] When the first power boost level is the minimum value among the at least one power boost level, it can ensure that the terminal can achieve the control of the transmission power under any circumstances. For example, still taking the foregoing 4 power boost levels: 1dB, 2dB, 3dB, and 4dB as an example, if the maximum power boost level that the terminal can support at a certain moment after sending the foregoing 4 power boost levels to the network device is 2dB, then when the first power boost level randomly configured by the network device for the terminal from the foregoing 4 power boost levels is 3dB (this randomly selected first power boost level is relatively large), it can be seen that this randomly selected first power boost level 3dB exceeds the maximum power boost level 2dB that the terminal can support at this moment. At this time, if the terminal performs transmission power control according to the relatively large first power boost level 3dB configured by the network device, it will greatly affect the communication quality and even fail to achieve the uplift control of the transmission power. Therefore, selecting the minimum value among the foregoing at least one power boost level as the first power boost level configured for the terminal can effectively ensure the smooth progress of the terminal power control. Of course, when the maximum power boost level that the terminal can support is relatively large, such as 5dB, the network device can randomly select any one of the 4 power boost levels 1dB, 2dB, 3dB, and 4dB to configure for the terminal, and this application does not make any limitations in this regard.

[0078] Further, after the terminal receives the second information from the network device, it 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.

[0079] Optionally, since the network device may be connected to multiple terminals, it may also receive the first information sent separately by multiple terminals. Further, when the network device configures the first power boost level for multiple terminals, to save signaling overhead, it can configure the first power boost level uniformly for the terminals whose power boost levels have an intersection among the multiple terminals. In this way, the network device can send the same second information to the terminals whose power boost levels have an intersection. For example, assume that terminal 1 supports 4 power boost levels, and the set of power boost levels corresponding to the 4 power boost levels is {1 dB, 1.5 dB, 2 dB, 2.5 dB}; terminal 2 supports 3 power boost levels, and the set of power boost levels corresponding to the 3 power boost levels is {1 dB, 2 dB, 3 dB}; terminal 3 supports 5 power boost levels, and the set of power boost levels corresponding to the 5 power boost levels is {0.5 dB, 1 dB, 2 dB, 2.5 dB, 3 dB}. Then, there is an intersection among the power boost levels supported by terminal 1, terminal 2, and terminal 3, which can be denoted as {1 dB, 2 dB}. 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 {1 dB, 2 dB} of the power boost levels of the above 3 terminals as the first power boost level for terminal 1, terminal 2, and terminal 3. For example, the network device randomly selects the power boost level 1 dB as the first power boost level configured for terminal 1, terminal 2, and terminal 3, and can send the indication information indicating the power boost level 1 dB to terminal 1, terminal 2, and terminal 3 respectively by carrying it in a common second information.

[0080] It should be noted that when the network device configures the first power boost level for the terminals whose power boost levels have an intersection, it can not only randomly select a power boost level from the intersection as the first power boost level for the terminals whose power boost levels have an intersection, but also select a power boost level from the intersection as the first power boost level for the terminals with an intersection according to a certain selection rule of the power boost level. In various embodiments of the present application, the selection method of the first power boost level is not specifically limited. For example, the minimum value (the minimum power boost level) in the intersection can be used as the first power boost level configured by the network device for the terminals whose power boost levels have an intersection.

[0081] Optionally, the network device may carry the second information in the first downlink control information (DCI) and / or the second transport block (TB) sent to the terminal; thereby, the efficiency of the network device in transmitting the second information can be improved to a certain extent, and the signaling transmission overhead can be saved.

[0082] S303. When the network device determines that the terminal uses the first power boost level for uplink signal transmission, it selects a second power boost level from at least one power boost level according to the link measurement value of the terminal. It should be noted that both this step and the following step S304 are optional steps. The purpose of executing this step and the following step S304 is to better adapt to the changes in the network environment, adapt a more appropriate power boost level for the terminal, and improve communication reliability.

[0083] 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 may be any one of the other power boost levels except the first power boost level among at least one power boost level supported by the terminal. For example, assume that at least one power boost level supported by the terminal is: 1 dB, 2 dB, 3 dB, 5 dB, 7 dB, and the first power boost level is 3 dB. Then, when the network device determines that the terminal uses the first power boost level of 3 dB for uplink signal transmission, it can select the second power boost level from at least one power boost level according to the link measurement value obtained by measuring the communication link with the terminal, that is, the link measurement value of the terminal. For example, the second power boost level is 5 dB. It should be noted that the above link measurement value can be used to reflect the impact on the demodulation performance of the network device after the terminal boosts the power using the first power boost level.

[0084] Therefore, when the network device determines that the terminal uses the first power boost level for uplink signal transmission, it can determine the impact on the demodulation performance after the terminal boosts the power according to 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, it can select a second power boost level different from the first power boost level from at least one power boost level and configure it for the terminal; in this way, after the terminal performs transmit power control via the first power boost level, the network device measures (or measures in real time) the communication link with the terminal, and thus selects a second power boost level different from the first power boost level from at least one power boost level according to the link measurement value of the terminal, realizing the adaptability of the power boost level configuration to the link, that is, the network device can dynamically update and configure the power boost level of the terminal.

[0085] 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 the set selection rule of the second power boost level. In the embodiments of the present application, the selection rule of the second power boost level is not specifically limited. For example, still taking the at least one power boost level supported by the terminal as: 1dB, 2dB, 3dB, 5dB, 7dB, and the first power boost level being 3dB as an example, when the network device determines that the terminal uses the first power boost level to send the uplink signal, it can, according to the link measurement value of the terminal, randomly select a power boost level from the 4 power boost levels (i.e., 1dB, 2dB, 5dB, 7dB) other than the first power boost level 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 4 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.

[0086] In addition, if after the network device configures the second power boost level for the terminal, it detects that the link measurement value of the terminal when using the second power boost level to send the uplink signal becomes worse compared with the link measurement value when the terminal uses the first power boost level to send the uplink signal, that is, the demodulation performance deteriorates, then the power boost level of the terminal can be reconfigured again according to the above selection and adaptation method of the power boost level until the link measurement value (or demodulation performance) of the terminal becomes better or optimized.

[0087] 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 corresponding to better demodulation performance as the second power boost level adapted to the terminal, that is, configure the power boost level corresponding to better demodulation performance for the terminal. In this way, the communication quality between the terminal and the network device can be further improved.

[0088] It should be noted that when the network device determines that the terminal uses the first power boost level to send the uplink signal, it can also select the second power boost level adapted to the terminal from at least one power boost level according to other measurement results (for example, the signal reception quality value obtained by the network device performing measurements on the uplink signal sent by the terminal). The present application does not specifically limit the method by which the network device triggers the selection of the second power boost level based on which communication parameter of the terminal as the judgment criterion.

[0089] S304. The network device sends the third information to the terminal. Correspondingly, the terminal receives the third information from the network device.

[0090] The third information is used to indicate a second power boost level, which may be a power boost level different from the first power boost level selected by the network device (such as a base station) from at least one power boost level based on measurement results (such as link measurement values or signal reception quality values) obtained by performing measurements on the communication link between the network device and the terminal or on the uplink signal sent by the terminal when it is determined that the terminal uses the first power boost level for uplink signal transmission.

[0091] Optionally, the network device may carry the third information in the second DCI and / or the third TB sent to the terminal.

[0092] Obviously, based on the transmission power control method described in the above steps S301 - 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 perform transmission power control is no longer a fixed value, but can adapt to the power boost level values in different network environments, which can better adapt to the network environment and thus improve the flexibility of power control. Moreover, when the terminal uses the configured first power boost level for uplink signal transmission, 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) to dynamically update and configure the power boost level of the terminal, so as to improve communication quality (such as demodulation performance) and further improve the flexibility of power control.

[0093] Refer to Figure 4 As shown, another transmission power control method provided by an embodiment of the present application is described below. In the following introduction process, this method is applied to the Figure 2 network architecture shown as an example. The process of this method is introduced as follows.

[0094] S401. The terminal sends the first information to the network device. Correspondingly, the network device receives the first information from the terminal.

[0095] The first information can also be referred to as the first relationship information, or it can have other names. Among them, the first relationship is used to indicate the corresponding relationship between different value changes of the target radio frequency indicator and different transmission power boost levels. Therefore, the terminal can use the first information to indicate the corresponding relationship between different value changes of the target radio frequency indicator and different transmission power boost levels. Exemplarily, the first information can directly carry the corresponding relationship between different value changes of different target radio frequency indicators and different transmission power boost levels. The first information can also carry a functional relationship formula for indicating the corresponding relationship between different value changes of different target radio frequency indicators and different transmission power boost levels. Or the first information can also carry a corresponding relationship identifier, which is used to identify the corresponding relationship between different value changes of different target radio frequency indicators and different transmission power boost levels. This application does not make any limitations in this regard.

[0096] Optionally, the target radio frequency indicator can 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 there is a certain connection between the corresponding values or value ranges (such as the upper limit of the value range) of ACLR, EVM, and IBE and the transmission power boost level of the terminal, in this way, according to the change amount of the radio frequency indicator parameters (any one of ACLR, EVM, and IBE) or the combination of radio frequency indicator parameters (at least two of ACLR, EVM, and IBE) included in the target radio frequency indicator within a period of time, the transmission power boost level adapted to the terminal can be determined more accurately to ensure that the communication quality can be improved after the transmission power control of the terminal.

[0097] For example, when the target radio frequency indicator is EVM, the different value changes of EVM can be: "The radio frequency 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 radio frequency 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 radio frequency indicator is ACLR, the different value changes of ACLR can be "The radio frequency indicator value change of ACLR under PC3 is 1dB (the transmission power level value corresponding to ACLR is relaxed from 30dB to (or reduced to) 29dB)", "The radio frequency indicator value change of ACLR under PC3 is 2dB (the transmission power level value corresponding to ACLR is relaxed from 30dB to (or reduced to) 28dB)".

[0098] For another example, when the target radio frequency indicators are a combination of EVM and ACLR, the different value changes of EVM and ACLR can be: "the value change of the radio frequency indicator of EVM under the 256QAM modulation order is 0.5% (the upper limit of the value of EVM is relaxed from 3.5% to (or increased to) 4%), and the value change of the radio frequency indicator of ACLR under PC3 is 1 dB (the value of the transmission power level corresponding to ACLR is relaxed from 30 dB to (or reduced to) 29 dB)", "the value change of the radio frequency indicator of EVM under the 256QAM modulation order is 1% (the upper limit of the value of EVM is relaxed from 3.5% to (or increased to) 4.5%), and the value change of the radio frequency indicator of ACLR under PC3 is 2 dB (the value of the transmission power level corresponding to ACLR is relaxed from 30 dB to (or reduced to) 28 dB)".

[0099] Therefore, taking the target radio frequency indicators as the EVM under the 256QAM modulation order or the ACLR under PC3 as an example, that is, the target radio frequency indicator is any one of the foregoing two radio frequency indicators (i.e., the EVM under the 256QAM modulation order and the ACLR under PC3). Combining the foregoing, as shown in Table 1, it is an example of the corresponding relationship between the different value changes of the foregoing two radio frequency indicators and different transmission power boost levels.

[0100] Table 1: Example of the corresponding relationship between different value changes of target radio frequency indicators and different transmission power boost levels

[0101]

[0102] Furthermore, after the network device obtains the corresponding relationship recorded in Table 1 above, it can determine the transmission power boost levels corresponding to the terminal under different value changes of the target radio frequency indicators (i.e., the power boost levels configured by the network device for the terminal). For example, when the target radio frequency indicator is the EVM under the 256QAM modulation order and the corresponding value change is 0.5%, the transmission power boost level corresponding to the terminal is 1 dB; for another example, when the target radio frequency indicator is the ACLR under PC3 and the corresponding value change is 1 dB, the transmission power boost level corresponding to the terminal is 1 dB.

[0103] It should be noted that the corresponding relationship recorded in Table 1 above takes the target radio frequency indicator as a single radio frequency indicator as an example, but in the embodiments of the present application, the types and quantities of the target radio frequency indicators are not limited, that is, the target radio frequency indicator can also be radio frequency indicators such as IBE and MPR, and the target radio frequency indicator may include two or more radio frequency indicators. For example, the target radio frequency indicator can be a radio frequency indicator combination of "EVM under the 256QAM modulation order and ACLR under PC3".

[0104] Optionally, when the target radio frequency metric includes two or more radio frequency metrics, that is, when the target radio frequency metric is a combination of different radio frequency metrics, the correspondence between different value change amounts of the target radio frequency metric and different transmission power boost levels can be determined according to the correspondence between different value change amounts of each radio frequency metric and different transmission power boost levels. For example, assume that the target radio frequency metric is a combination of radio frequency metrics of "EVM at 256QAM modulation order and ACLR at PC3", and the value change amount corresponding to EVM is 0.5% and the value change amount corresponding to ACLR is 1 dB. Then, according to EVM at 256QAM modulation order and the corresponding value change amount of 0.5%, the transmission power boost level corresponding to the terminal is 1 dB, and according to ACLR at PC3 and the corresponding value change amount of 1 dB, the transmission power boost level corresponding to the terminal is 1 dB. It can be obtained that the transmission power boost level corresponding to the terminal at this time should also be 1 dB.

[0105] For another example, assume that the target radio frequency metric is a combination of radio frequency metrics of "EVM at 256QAM modulation order and ACLR at PC3", and the value change amount corresponding to EVM is 0.5% and the value change amount corresponding to ACLR is 2 dB. Then, according to EVM at 256QAM modulation order and the corresponding value change amount of 0.5%, the transmission power boost level corresponding to the terminal is 1 dB, and according to ACLR at PC3 and the corresponding value change amount of 2 dB, the transmission power boost level corresponding to the terminal is 2 dB. It can be obtained that the transmission power boost level configured by the network device for the terminal at this time can be 1 dB or 2 dB; that is, select a transmission power boost level from the transmission power boost levels corresponding to multiple radio frequency metrics as the transmission power boost level configured by the network device for this terminal.

[0106] Optionally, when the target radio frequency indicator includes two or more radio frequency indicators, that is, when the target radio frequency indicator is a combination of radio frequency indicators, the correspondence between the different value changes of the target radio frequency indicator and the different transmit power boost levels may not be determined by the correspondence between the different value changes of each radio frequency indicator and the different transmit power boost levels, that is, it may be a newly established correspondence. For example, still assuming that the target radio frequency indicator is a combination of radio frequency indicators of "EVM at 256QAM modulation order and ACLR at PC3", and the value change corresponding to EVM is 0.5% and the value change corresponding to ACLR is 1 dB. Although for EVM at 256QAM modulation order, when the corresponding value change is 0.5%, the transmit power boost level corresponding to the terminal is 1 dB, and for ACLR at PC3, when the corresponding value change is 1 dB, the transmit power boost level corresponding to the terminal is 1 dB, but at this time, the transmit power boost level configured by the network device for the terminal may be 1.5 dB, or other transmit power boost levels that are different from the transmit power boost levels corresponding to the value changes of each radio frequency indicator.

[0107] Optionally, the terminal may carry the first information in the UCI and / or the first TB sent to the network device.

[0108] S402. The network device sends the second information to the terminal. Correspondingly, the terminal receives the second information from the network device.

[0109] Optionally, 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 the correspondence between the different value changes of the target radio frequency indicator reported by the terminal and the different transmit power boost levels. Among them, the first power boost level may be determined according to the detected value change of the terminal's current target radio frequency indicator and the foregoing correspondence.

[0110] For example, assuming that the terminal's target radio frequency indicator is EVM at 256QAM modulation order, if the network device detects that the value change of the current target radio frequency indicator is 1% (the upper limit of the EVM value is relaxed from 3.5% to (or increased to) 4.5%), then in combination with the correspondence indicated by the first information, for example, the correspondence recorded in Table 1, the first power boost level configured for the terminal can be determined to be 2 dB.

[0111] For another example, assume that the target radio frequency metrics of the terminal are a combination of radio frequency metrics of "EVM under 256QAM modulation order and ACLR under PC3". If the network device detects that the change amount of the current target radio frequency metrics is 1% (the upper limit of the EVM value is relaxed from 3.5% to (or increased to) 4.5%) and 2 dB (the transmission power level value corresponding to the ACLR is relaxed from 30 dB to (or reduced to) 28 dB), then in combination 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 2 dB.

[0112] Optionally, the network device may carry the second information in the DCI and / or the second TB sent to the terminal.

[0113] Further, after receiving the second information from the network device, the terminal can perform power control on its own transmission power according to the first power boost level indicated by the second information, so as to improve the communication quality, that is, to make up for the problem that the wireless transmission path loss affects the communication quality.

[0114] It should be noted that when the network device determines to use the first power boost level for uplink signal transmission, it can also continuously detect the target radio frequency metrics of the terminal; in this way, once it detects that the change amount of the target radio frequency metrics changes, it can reconfigure the power boost level for the terminal according to the latest change amount, that is, the network device configures the second power boost level corresponding to the latest change amount of the target radio frequency metrics for the terminal, thereby realizing the effective control of the terminal's transmission power and further improving the flexibility of transmission power control.

[0115] It can be seen that based on the transmission power control method described in the above steps S401 to S402, in the embodiments of the present application, since the terminal reports the corresponding relationship between different change amounts of the target radio frequency metrics and different transmission power boost levels to the network device, after obtaining the corresponding relationship, the network device can configure an appropriate power boost level for the terminal according to the change amount of the target radio frequency metrics of the terminal detected in different time periods; in this way, not only can it adapt to the changing network environment and be better adapted to the network environment, thereby improving the flexibility of power control, but also it can further improve the problem that the communication quality (such as, demodulation performance) deteriorates due to the wireless transmission path loss.

[0116] Figure 5 The structural schematic diagram of a communication device provided by the embodiments of the present application is given. The communication device 500 may be Figure 3 or Figure 4 the system architecture of the terminal described in the embodiments shown, for implementing the method corresponding to the terminal in the above method embodiments. Or, the communication device 500 may be Figure 3 orFigure 4 The system architecture of the network device described in the illustrated embodiment is used to implement the method corresponding to the network device in the above method embodiment.

[0117] The communication device 500 includes at least one processor 501. The processor 501 can be used for internal processing of the device to implement certain control processing functions. Optionally, the processor 501 includes instructions. Optionally, the processor 501 can store data. Optionally, different processors can be independent devices, can be located at different physical locations, and can be located on different integrated circuits. Optionally, different processors can be integrated in one or more processors, for example, integrated on one or more integrated circuits.

[0118] Optionally, the communication device 500 includes one or more memories 503 for storing instructions. Optionally, data can also be stored in the memory 503. The processor and the memory can be set separately or integrated together.

[0119] Optionally, the communication device 500 includes a communication line 502 and at least one communication interface 504. Among them, since the memory 503, the communication line 502, and the communication interface 504 are all optional, so Figure 5 they are all represented by dashed lines.

[0120] Optionally, the communication device 500 may further include a transceiver and / or an antenna. Among them, the transceiver can be used to send information to other devices or receive information from other devices. The transceiver can be called a transceiver, a transceiver circuit, an input / output interface, etc., and is used to implement the transceiver function of the communication device 500 through the antenna. Optionally, the transceiver includes a transmitter and a receiver. Exemplarily, the transmitter can be used to generate a radio frequency signal from a baseband signal, and the receiver can be used to convert a radio frequency signal into a baseband signal.

[0121] The processor 501 can 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 solution.

[0122] The communication line 502 may include a path for transmitting information between the above components.

[0123] A communication interface 504, using any transceiver-like device, is used to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), wired access networks, etc.

[0124] The memory 503 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or it can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but not limited to this. The memory 503 can exist independently and be connected to the processor 501 through the communication line 502. Alternatively, the memory 503 can also be integrated with the processor 501.

[0125] Among them, the memory 503 is used to store computer execution instructions for implementing the solution of this application, and is controlled by the processor 501 to execute. The processor 501 is used to execute the computer execution instructions stored in the memory 503, so as to implement Figure 3 or Figure 4 the steps executed by the terminal or network device described in the embodiments shown.

[0126] Optionally, the computer execution instructions in the embodiments of this application can also be referred to as application code, and the embodiments of this application do not make specific limitations on this.

[0127] In a specific implementation, as an embodiment, the processor 501 can include one or more CPUs, such as Figure 5 CPU0 and CPU1 in

[0128] In a specific implementation, as an embodiment, the communication device 500 can include multiple processors, such as Figure 5The processors 501 and 505 therein. Each of these processors can be a single-CPU processor or a multi-CPU processor. The processors here can refer to one or more devices, circuits, and / or processing cores for processing data (such as computer program instructions).

[0129] When Figure 5 The device shown is a chip, such as a chip of a terminal or a chip of a network device. Then the chip includes a processor 501 (and may also include a processor 505), a communication line 502, and a communication interface 504. Optionally, it may include a memory 503. Specifically, the communication interface 504 can be an input interface, a pin, a circuit, etc. The memory 503 can be a register, a cache, etc. The processors 501 and 505 can be a general-purpose CPU, a microprocessor, an ASIC, or an integrated circuit for executing a program for controlling the transmission power of any of the above embodiments.

[0130] Embodiments of the present application can divide the device into functional modules according to the above method examples. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated modules 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 embodiments of the present application is illustrative, only a logical function division, and there can be other division methods in actual implementation. For example, in the case of dividing each functional module corresponding to each function, refer to Figure 6 As shown, it is a schematic diagram of a device. The device 600 can be the terminal or network device involved in each of the above 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.

[0131] It should be understood that the device 600 can be used to implement the steps executed by the terminal or network device in the method for controlling the transmission power of the embodiments of the present application. The relevant features can refer to the above Figure 3 or Figure 4 shown embodiments, which will not be elaborated here.

[0132] Optionally, Figure 6 the functions / implementation processes of the transceiver unit 601 and the processing unit 602 therein can be implemented by Figure 5 the processor 501 in Figure 6 calling computer-executable instructions stored in the memory 503. Or, Figure 5 the functions / implementation processes of the processing unit 602 inFigure 6 The function / implementation process of the transceiver unit 601 in Figure 5 can be implemented by the communication interface 504 in

[0133] Optionally, when the device 600 is a chip or a circuit, the function / implementation process of the transceiver unit 601 can also be implemented by pins or circuits, etc. Optionally, the transceiver unit 601 may include a sending unit and / or a receiving unit. The sending unit is used to implement the sending function, and the receiving unit is used to implement the receiving function; alternatively, the transceiver unit 601 may be an integrated module that can implement the sending function and / or the receiving function. Optionally, the transceiver unit 601 can be implemented by a transceiver.

[0134] This application also provides a computer-readable storage medium that stores computer programs or instructions. When the computer programs or instructions are run, the methods performed by the terminal or network device in the foregoing method embodiments are implemented. In this way, the functions described in the foregoing embodiments can be implemented in the form of software function units and sold or used as independent products. Based on this understanding, the technical solution of this application, in essence, or the part that makes a contribution, or a part of this 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 to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method for controlling the transmission power described in various embodiments of this application. The storage medium includes: various media such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0135] This application also provides a computer program product that includes computer program code. When the computer program code runs on a computer, the computer is enabled to execute the methods performed by the terminal or network device in any of the foregoing method embodiments.

[0136] This embodiment of this application also provides a processing device, including a processor and an interface; the processor is used to execute the methods performed by the terminal or network device involved in any of the foregoing method embodiments.

[0137] This application also provides a communication system that can be used to implement the methods performed by the terminal or network device in any possible implementation manner of the foregoing method embodiments and method embodiments. Exemplarily, the communication system has an architecture as shown in Figure 1 or Figure 2 shown.

[0138] The present application also provides a chip or a chip system. The chip is coupled to a transceiver and is used to implement the method executed by the terminal or the network device in any possible implementation manner of the above method embodiments. Herein, "coupled" means that two components are directly or indirectly combined with each other. Such combination can be fixed or movable, and this combination allows the flow of 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 the chip system can be used to execute the method executed by the terminal or the network device involved in any of the above method embodiments.

[0139] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, 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 the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. 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 wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that the computer can access or a data storage device such as a server, data center, etc. that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

[0140] In the embodiments of the present application, the various illustrative logical units and circuits described can be implemented or operated to perform the described functions by a general-purpose processor, a digital signal processor (DSP), an ASIC, a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above designs. 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, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration.

[0141] 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 both. The software units can be stored in a RAM, flash memory, ROM, erasable programmable read-only memory (EPROM), EEPROM, register, hard disk, removable disk, CD-ROM, or any other form of storage medium 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 write information to the storage medium. Optionally, the storage medium can also be integrated into the processor. The processor and the storage medium can be disposed in an ASIC, and the ASIC can be disposed in a terminal. Optionally, the processor and the storage medium can also be disposed in different components of the terminal.

[0142] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in a process Figure 1 a process or multiple processes and / or blocks Figure 1 steps for implementing the functions specified in a block or multiple blocks.

[0143] The content in the various embodiments of the present application can be referred to each other. Without special instructions and logical conflicts, the terms and / or descriptions between different embodiments are consistent and can be referred to each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0144] It can be understood that in the embodiments of the present application, the terminal and / or the network device may execute some or all of the steps in the embodiments of the present application. These steps or operations are only examples. In the embodiments of the present application, other operations or variations of various operations may also be executed. In addition, the various steps may be executed in different orders 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 executed.

Claims

1. A method for controlling transmission power, characterized in that, Applied to a terminal, 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; Receiving second information from the network device, where 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, and the first power boost level is used for the terminal to perform transmission power control.

2. The method according to claim 1, characterized in that, Further including: Receiving third information from the network device, where the third information is used to indicate a second power boost level, and the second power boost level is selected by the network device from the at least one power boost level according to the link measurement value of the terminal when determining 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 the minimum value among the at least one power boost level.

4. A method for controlling transmission power, characterized in that, Applied to a network device, 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; Sending second information to the terminal, where 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, and the first power boost level is used for the terminal to perform transmission power control.

5. The method according to claim 4, characterized in that, Further including: Sending third information to the terminal, where the third information is used to indicate a second power boost level, and the second power boost level is selected by the network device from the at least one power boost level according to the link measurement value of the terminal when determining 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.

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

7. A method for controlling transmission power, characterized in that, Applied to a terminal, including: Sending first information to a network device, where the first information is used to indicate the correspondence between different value changes of a target radio frequency indicator and different transmission power boost levels; Receiving second information from the network device, where 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 is determined according to the detected value change of the target radio frequency indicator of the terminal and the correspondence.

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), error vector magnitude (EVM), in-band emission (IBE).

9. A method for controlling transmission power, characterized in that, Applied to a network device, including: Receiving first information from a terminal, where the first information is used to indicate the correspondence between different value changes of a target radio frequency indicator and different transmission power boost levels; Send second information to the terminal, where the second information is used to indicate a first power boost level for the terminal to perform transmission power control, and the first power boost level is determined according to a variation amount of a value of the current target radio frequency index detected for the terminal and the corresponding relationship.

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

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

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

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 configured to execute the computer program stored on the memory, so that the communication device executes the method according to any one of claims 1 to 3, or so that the communication device executes the method according to any one of claims 4 to 6, or so that the communication device executes the method according to any one of claims 7 to 8, or so that the communication device executes 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, and when the computer program runs on a computer, the computer is caused to execute the method according to any one of claims 1 to 3, or the computer is caused to execute the method according to any one of claims 4 to 6, or the computer is caused to execute the method according to any one of claims 7 to 8, or the computer is caused to execute the method according to any one of claims 9 to 10.

15. A chip system, characterized in that, It includes a processor and an interface, the processor is configured to receive an instruction from the interface and run, and when the processor runs the instruction, 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, It includes a terminal and a network device; The terminal is configured to execute the method according to any one of claims 1 to 3, and the network device is configured to execute the method according to any one of claims 4 to 6; or The terminal is configured to execute the method according to any one of claims 7 to 8, and the network device is configured to execute the method according to any one of claims 9 to 10.

Images