WO2021120022A1

WO2021120022A1 - Uplink transmit power control method and apparatus

Info

Publication number: WO2021120022A1
Application number: PCT/CN2019/126100
Authority: WO
Inventors: 侯海龙; 金哲; 郑娟; 李超君
Original assignee: 华为技术有限公司
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2021-06-24
Also published as: CN114747260B; CN114747260A

Abstract

Embodiments of the present application relate to the technical field of communications. Disclosed are an uplink transmit power control method and apparatus, which are capable of, when a power level of a terminal device is small, enabling the terminal device to determine uplink transmit power on the basis of open-loop power control, and reducing calculation complexity of uplink transmit power control of the terminal device, thereby saving processing resources, and reducing power consumption. The method comprises: the terminal device receives indication information from a network device; the terminal device determines, according to the indication information, whether the terminal device supports closed-loop power control; when the terminal device does not support the closed-loop power control, the terminal device determines uplink transmit power of the terminal device on the basis of open-loop power control; when the terminal device supports the closed-loop power control, the terminal device determines the uplink transmit power of the terminal device on the basis of the open-loop power control and the closed-loop power control.

Description

Uplink transmission power control method and device

Technical field

This application relates to the field of communication technology, and in particular to an uplink transmission power control method and device.

Background technique

With the development of communication technology and the improvement of user requirements, terminal devices in communication scenarios gradually show characteristics such as large numbers and multiple forms. For example, in the industrial automation scenario, there are a large number of monitoring equipment, machines, sensors, etc. in the factory; in the home and life scenarios, there are a large number of mobile phones, tablets, wearable devices, smart home appliances, or vehicle-mounted terminal devices, etc.

Summary of the invention

The embodiments of the present application provide an uplink transmission power control method and device to reduce the power consumption of terminal equipment.

In the first aspect, an embodiment of the present application provides an uplink transmit power control method. The method includes: receiving instruction information from a network device; determining whether the terminal device supports closed-loop power control according to the instruction information; when the terminal device does not support closed-loop power control; In closed-loop power control, determine the uplink transmit power of the terminal device based on open-loop power control; when the terminal device supports closed-loop power control, determine the uplink transmit power of the terminal device based on open-loop power control and closed-loop power control .

In the embodiments of the present application, the described uplink transmission power control method may be implemented by a terminal device, or may be implemented by a component of the terminal device, such as a processing chip, a circuit and other components in the terminal device. Using the above method, the terminal device determines whether to support closed-loop power control according to the instruction information of the network device, and when it does not support closed-loop power control, it determines the uplink transmit power based on the open-loop power control without considering the closed-loop power control part, which is beneficial to reduce the terminal The computational complexity of the device's uplink transmit power control, thereby saving the processing resources of the terminal device and reducing the power consumption of the terminal device.

In a possible design, the indication information is used to indicate whether the terminal device supports closed-loop power control. In this design, the network equipment can independently indicate whether each terminal device supports closed-loop power control, and the indication is more flexible.

In a possible design, the indication information is used to indicate the first threshold; the determining whether the terminal device supports closed-loop power control according to the indication information includes: when the power level of the terminal device is greater than or When it is equal to the first threshold value, the terminal device supports closed-loop power control; when the power level of the terminal device is less than the first threshold value, the terminal device does not support closed-loop power control. In this design, the network device can broadcast in the range of a cell or a group of terminal devices to notify whether one or more terminal devices support closed-loop power control, which is beneficial to saving signaling resources.

In a possible design, the method further includes: sending information about the power level of the terminal device to the network device. In this design, the terminal device sends information about the power level of the terminal device to the network device, which helps the network device to know the power level of the terminal device, and facilitates the network device to accurately determine whether the terminal device supports closed-loop power control according to the power level of the terminal device. judgment.

In a possible design, the method further includes: when the terminal device supports closed-loop power control, receiving a transmit power control TPC command from a network device, wherein the closed-loop power control is executed according to the TPC command. In this design, when the terminal device supports closed-loop power control, it receives TPC commands from the network device, which is beneficial for the terminal device to perform closed-loop power control according to the TPC command received from the network device, and accurately determine the uplink transmit power, thereby ensuring that the network device is Appropriate received power to receive the signal (information) transmitted by the terminal device.

In a possible design, the method further includes: receiving downlink control information DCI from a network device, and when the terminal device supports closed-loop power control, the DCI is used to indicate a TPC command, wherein the closed-loop power control is Executed according to the TPC command. In this design, when the terminal device supports closed-loop power control, it receives the DCI from the network device and learns the TPC command indicated by the DCI, which is beneficial for the terminal device to receive the TPC command from the network device in time according to the dynamic signaling to perform closed-loop power control. Accurately determine the uplink transmission power, thereby ensuring that the network equipment receives the signal (information) transmitted by the terminal equipment with the appropriate reception power.

In a possible design, the method further includes: receiving DCI from a network device, and when the terminal device does not support closed-loop power control, the DCI is not used to indicate the TPC command. In this design, when the terminal device does not support closed-loop power control, the DCI sent by the network device does not indicate the TPC command. The TPC command field used to indicate the TPC command in the DCI can be deleted or reinterpreted as other fields. It is used to transmit other information, which helps to save signaling and avoid the waste of signaling.

In the second aspect, an embodiment of the present application provides an uplink transmit power control method. The method includes: determining whether the terminal device supports closed-loop power control according to the power level of the terminal device and a second threshold value, wherein the second The threshold value is predefined; when the terminal device does not support closed-loop power control, the uplink transmit power of the terminal device is determined based on the open-loop power control; when the terminal device supports closed-loop power control, based on the open-loop power Control and closed-loop power control to determine the uplink transmit power of the terminal device.

In the embodiments of the present application, the described uplink transmission power control method may be implemented by a terminal device, or may be implemented by a component of the terminal device, such as a processing chip, a circuit and other components in the terminal device. Using the above method, the terminal device determines whether to support closed-loop power control according to the power level of the terminal device and the predefined second threshold value, and when it does not support closed-loop power control, it determines the uplink transmit power based on the open-loop power control without consideration. The closed-loop power control part is beneficial to reduce the computational complexity of the uplink transmission power control of the terminal equipment, thereby saving the processing resources of the terminal equipment and reducing the power consumption of the terminal equipment.

In a possible design, determining whether the terminal device supports closed-loop power control according to the power level of the terminal device and the second threshold includes: when the power level of the terminal device is greater than or equal to the second threshold When the limit value is set, the terminal device supports closed-loop power control; when the power level of the terminal device is less than the second threshold value, the terminal device does not support closed-loop power control.

In a possible design, the method further includes: sending information about the power level of the terminal device to the network device.

In a possible design, the method further includes: when the terminal device supports closed-loop power control, receiving a TPC command from a network device, wherein the closed-loop power control is executed according to the TPC command.

In a possible design, the method further includes: receiving downlink control information DCI from a network device, and when the terminal device supports closed-loop power control, the DCI is used to indicate a TPC command, wherein the closed-loop power control is Executed according to the TPC command.

In a possible design, the method further includes: receiving DCI from a network device, and when the terminal device does not support closed-loop power control, the DCI is not used to indicate the TPC command.

The technical effects that can be achieved by any possible design of the above second aspect can be referred to the technical effects that can be achieved by the above first aspect, which will not be repeated here.

In a third aspect, an embodiment of the present application provides an uplink transmit power control method. The method includes: sending second indication information to a network device, where the second indication information is used to indicate whether the terminal device supports closed-loop power control; When the terminal device does not support closed-loop power control, the uplink transmit power of the terminal device is determined based on open-loop power control; when the terminal device supports closed-loop power control, the terminal device is determined based on open-loop power control and closed-loop power control. The uplink transmit power of the terminal device.

In the embodiments of the present application, the described uplink transmission power control method may be implemented by a terminal device, or may be implemented by a component of the terminal device, such as a processing chip, a circuit and other components in the terminal device. Using the above method, the terminal device can send to the network device second indication information for indicating whether the terminal device supports closed-loop power control according to whether it has the ability to support closed-loop power control, so that the network device can check whether the terminal device supports closed-loop power control. When the control is known, and when closed-loop power control is not supported, the terminal device determines the uplink transmit power based on the open-loop power control, without considering the closed-loop power control part, which helps reduce the computational complexity of the terminal device’s uplink transmit power control, thereby saving terminal equipment Processing resources and reduce the power consumption of terminal equipment.

The technical effects that can be achieved by any possible design of the above third aspect can be referred to the technical effects that can be achieved by the above first aspect, which will not be repeated here.

In a fourth aspect, an embodiment of the present application provides an uplink transmit power control method. The method includes: sending instruction information to a terminal device, where the instruction information is used to indicate whether the terminal device supports closed-loop power control, or the instruction information Used to indicate the first threshold value.

In the embodiments of the present application, the described uplink transmit power control method may be implemented by a network device, or may be implemented by a component of the network device, such as a processing chip, a circuit, and other components in the network device.

In a possible design, the method further includes: when the terminal device supports closed-loop power control, sending a TPC command to the terminal device.

In a possible design, the method further includes: sending downlink control information DCI to the terminal device, and when the terminal device supports closed-loop power control, the DCI is used to indicate a TPC command.

In a possible design, the method further includes: sending DCI to the terminal device, and when the terminal device does not support closed-loop power control, the DCI is not used to indicate the TPC command.

In a possible design, the method further includes: receiving the power level information of the terminal device from the terminal device.

In a fifth aspect, an embodiment of the present application provides an uplink transmit power control method. The method includes: when a terminal device supports closed-loop power control, sending a TPC command to the terminal device.

In a sixth aspect, an embodiment of the present application provides an uplink transmit power control method. The method includes: sending downlink control information DCI to a terminal device. When the terminal device supports closed-loop power control, the DCI is used to indicate a TPC command, When the terminal device does not support closed-loop power control, the DCI is not used to indicate a TPC command.

In a seventh aspect, an embodiment of the present application provides an uplink transmit power control method. The method includes: receiving second indication information from a terminal device, where the second indication information is used to indicate whether the terminal device supports closed-loop power control.

In an eighth aspect, an embodiment of the present application provides a communication device that has the function of implementing the method described in the first aspect, the method described in the second aspect, or the method described in the third aspect, and the function may be implemented by hardware Realization can also be realized by software, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions, such as a transceiver unit and a processing unit.

In one possible design, the device can be a chip or an integrated circuit.

In a possible design, the device includes a memory and a processor. The memory is used to store a program or instruction executed by the processor. When the program or instruction is executed by the processor, the device can execute the above-mentioned first aspect. The method or the method described in the second aspect or the method described in the third aspect.

In one possible design, the device may be a terminal device.

In a ninth aspect, an embodiment of the present application provides a communication device that can implement the method described in the fourth aspect or the method described in the fifth aspect or the method described in the sixth aspect or the method described in the seventh aspect. Function, the function can be realized by hardware, can also be realized by software, or realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions, such as a transceiver unit and a processing unit.

In one possible design, the device can be a chip or an integrated circuit.

In a possible design, the device includes a memory and a processor. The memory is used to store programs or instructions executed by the processor. When the programs or instructions are executed by the processor, the device can execute the aforementioned fourth aspect. Or the method of the fifth aspect or the method of the sixth aspect or the method of the seventh aspect.

In one possible design, the device may be a network device.

In a tenth aspect, an embodiment of the present application provides a system including the communication device described in the eighth aspect and the communication device described in the ninth aspect.

In an eleventh aspect, an embodiment of the present application provides a communication device. The communication device includes a processor, a memory, and a communication interface. The communication interface is used to receive signals or send signals; and the memory is used to store programs or Instruction code; the processor is configured to call the program or instruction code from the memory to execute the method described in the first aspect or the method described in the second aspect or the method described in the third aspect.

In a twelfth aspect, an embodiment of the present application provides a communication device. The communication device includes a processor, a memory, and a communication interface. The communication interface is used to receive signals or send signals; and the memory is used to store programs or Instruction code; the processor is configured to call the program or instruction code from the memory to execute the method described in the fourth aspect or the method described in the fifth aspect or the method described in the sixth aspect or the seventh aspect The method described.

In a thirteenth aspect, an embodiment of the present application provides a communication device, the communication device includes a processor and an interface circuit, the interface circuit is configured to receive a program or instruction code and transmit it to the processor; the processor The program or instruction code is executed to execute the method described in the first aspect or the method described in the second aspect or the method described in the third aspect.

In a fourteenth aspect, an embodiment of the present application provides a communication device, the communication device includes a processor and an interface circuit, the interface circuit is configured to receive a program or instruction code and transmit it to the processor; the processor Run the program or instruction code to execute the method described in the fourth aspect or the method described in the fifth aspect or the method described in the sixth aspect or the method described in the seventh aspect.

In a fifteenth aspect, an embodiment of the present application provides a computer-readable storage medium for storing a program or instruction, and when the program or instruction is executed, the method described in the first aspect is Or the method described in the second aspect or the method described in the third aspect is implemented.

In a sixteenth aspect, an embodiment of the present application provides a computer-readable storage medium for storing a program or instruction. When the program or instruction is executed, the method described in the fourth aspect is Or the method of the fifth aspect or the method of the sixth aspect or the method of the seventh aspect is implemented.

In a seventeenth aspect, an embodiment of the present application provides a computer program product including instructions that, when the instructions are executed, cause the method described in the first aspect or the method described in the second aspect or the method described in the third aspect to The method is implemented.

In an eighteenth aspect, embodiments of the present application provide a computer program product including instructions, which when executed, cause the method described in the fourth aspect or the method described in the fifth aspect or the method described in the sixth aspect to The method or the method described in the seventh aspect is implemented.

For the technical effects that can be achieved from the fourth to eighteenth aspects above, please refer to the technical effects that can be achieved in the first, second, or third aspects above, and will not be repeated here.

Description of the drawings

FIG. 1 is a schematic diagram of a communication architecture provided by an embodiment of the application;

Figure 2 is a schematic diagram of a DCI format of a public packet provided by an embodiment of the application;

FIG. 3 is a schematic diagram of a transmission power control process provided by an embodiment of this application;

FIG. 4 is another schematic diagram of a transmission power control process provided by an embodiment of this application;

FIG. 5 is another schematic diagram of a transmit power control process provided by an embodiment of this application;

FIG. 6 is a schematic block diagram of a communication device provided by an embodiment of the application;

FIG. 7 is another schematic block diagram of a communication device provided by an embodiment of this application;

FIG. 8 is a schematic block diagram of a communication device provided by an embodiment of the application;

FIG. 9 is another schematic block diagram of a communication device provided by an embodiment of the application.

Detailed ways

The technical solutions of the embodiments of this application can be applied to various communication systems, for example: can be applied to LTE, fifth generation (5th generation, 5G) and other communication systems, can also be applied to wireless fidelity (wireless fidelity, WiFi), Global Interoperability for Microwave Access (wimax), or future communication systems, such as the future 6th generation (6G) system, etc. Among them, 5G can also be called new radio (NR).

In the communication system, including communication equipment, the communication equipment can use air interface resources for wireless communication. Among them, the communication device may include a network device and a terminal device, and the network device may also be referred to as a network side device. The air interface resources may include at least one of time domain resources, frequency domain resources, code resources, and space resources. In the embodiments of the present application, at least one type (a) may be one type (a), two types (a), three types (a) or more types (a), which is not limited in the embodiments of the present application.

Exemplarily, the communication system architecture applied in the embodiment of the present application may be as shown in FIG. 1, including a network device and multiple terminal devices. It should be noted that the embodiment of the present application does not limit the communication system shown in FIG. The number of terminal equipment and network equipment. Wireless communication between communication devices may include: wireless communication between network devices and terminal devices, wireless communication between terminal devices and terminal devices, and so on. Among them, in the embodiments of the present application, the term "wireless communication" can also be simply referred to as "communication", and the term "communication" can also be described as "data transmission", "information transmission", "signal transmission" or "transmission". Transmission can include sending and/or receiving. For example, the transmission between a network device and a terminal device includes: the network device sends a downlink signal to the terminal device, that is, the terminal device receives a downlink signal from the network device; and/or, the terminal device sends an uplink signal to the network device, that is, the network device sends an uplink signal from the terminal device. Receive uplink signal.

In the embodiment of this application, the communication between the network device and the terminal device is described as an example. Those skilled in the art can use the technical solution provided in the embodiment of this application to perform wireless communication between other scheduling entities and subordinate entities, for example, The wireless communication between the macro base station and the micro base station, for example, is used for the wireless communication between the first terminal device and the second terminal device, which is not limited in the embodiment of the present application.

Before introducing the embodiments of the present application, some terms in the embodiments of the present application are first explained to facilitate the understanding of those skilled in the art.

1) The terminal device can be a device with wireless transceiver function, or it can be called a terminal. Terminal devices can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water (such as ships, etc.); they can also be deployed in the air (such as airplanes, balloons, and satellites, etc.). The terminal device may be a user equipment (UE), where the UE includes a handheld device with a wireless communication function, a vehicle-mounted device, a wearable device, or a computing device. Exemplarily, the UE may be a mobile phone, a tablet computer, or a computer with a wireless transceiver function. Terminal equipment can also be virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, wireless terminals in industrial control, wireless terminals in unmanned driving, wireless terminals in telemedicine, and smart Wireless terminals in power grids, wireless terminals in smart cities, wireless terminals in smart homes, and so on. In the embodiments of the present application, the device used to implement the function of the terminal device may be a terminal device; it may also be a device capable of supporting the terminal device to implement the function, such as a chip system. The device may be installed in the terminal device or connected to the terminal device. Matching use. In the embodiments of the present application, the chip system may be composed of chips, or may include chips and other discrete devices. In the embodiments of the present application, the description may be made by taking an example in which the device that implements the function of the terminal device is the terminal device.

2). The network device can be a device that is deployed in a wireless access network and can communicate with terminal devices wirelessly. The network device may be a base station (base station, BS). Among them, the base station may have many forms, such as macro base stations, micro base stations, relay stations, and access points. Exemplarily, the base station involved in the embodiment of the present application may be a base station in 5G or a base station in LTE, where the base station in 5G may also be referred to as a transmission reception point (TRP) or gNB. In the embodiments of the present application, the device used to implement the function of the network device may be a network device; it may also be a device capable of supporting the network device to implement the function, such as a chip system, which may be installed in the network device or connected to the network device. Matching use. In the embodiments of the present application, the description may be made by taking an example in which the device that implements the function of the network device is the network device.

3) Uplink power control, which can also be referred to as uplink transmit power control, is to enable network equipment to receive an uplink signal with an appropriate received power, and the uplink signal is a signal transmitted by a terminal device through an uplink physical channel. Exemplarily, the appropriate received power means on the one hand the received power required when the uplink signal is correctly decoded by the network equipment, and on the other hand means that the uplink transmit power of the uplink signal cannot be unnecessarily high, so as not to affect other uplink signals. Transmission causes interference. In order to enable the network equipment to receive the signal sent by the terminal equipment through the uplink physical channel with an appropriate received power, in the uplink power control, the main control is the uplink transmission power when the terminal equipment sends the uplink physical channel. Optionally, for a certain channel, the required transmit power of the channel is related to the attenuation experienced by the channel, the interference and noise level of the receiving end, etc., so independent power control mechanisms can be introduced for different channels.

Taking the physical uplink shared channel (PUSCH) uplink power control as an example, if the terminal device sends the PUSCH to the network device on the uplink active part of the bandwidth (bandwidth part, BWP) b on the carrier f of the serving cell c, Then the uplink transmit power of PUSCH in transmission timing i can be calculated according to the following method:

Among them, P _{PUSCH, b, f, c} (i, j, q _d , l) are the uplink transmit power of PUSCH in transmission timing i,

It can be regarded as an open-loop power control part, and f _b,f,c (i,l) can be regarded as a closed-loop power control part;

P _CMAX,f,c (i) is the maximum PUSCH transmit power on the carrier f of cell c configured by the terminal equipment, which can be described as the power class supported by the terminal equipment, where the terminal equipment is on the carrier of the cell c sending the PUSCH to the network device on the BWP b of f;

_{PO_PUSCH, b, f, c} (j) is the desired (target) received power, the value of this parameter can be the network equipment through signaling (such as radio resource control (radio resource control, RRC) signaling, system message, or downlink Control information (downlink control information, DCI), etc.) is instructed or configured by the terminal equipment. This parameter can include a cell-specific part and a user-specific part; among them, the network equipment can configure multiple sets of { _{PO_PUSCH, b, f, c} , α _{b, f, c} _{}, and indicate which set of {PO_PUSCH, b, f, c} , α _{b, f, c} } is used by the terminal equipment through signaling (such as DCI, etc.), j is the signaling indication Which set _{of index values of {PO_PUSCH,b,f,c} ,α _b,f,c } used by the terminal device, the index value is { _{PO_PUSCH,b,f,c} ,α _{b,f,c used by the terminal device} } Indexes in the multiple sets of { _{PO_PUSCH,b,f,c} ,α _b,f,c };

α _{b, f, c} (j) is the partial path loss compensation factor, the range is (0, 1), the value of this parameter can be the network equipment through signaling (such as RRC signaling, system message, or DCI, etc.) as terminal equipment Instructed or configured;

μ is the sub-carrier spacing configuration of PUSCH, where the sub-carrier spacing of PUSCH is 15kHz (kilohertz)*2 ^μ , where the value of μ can be an integer such as 0, 1, 2, 4;

It is the number of resource blocks (resource block, RB) to which PUSCH is mapped, or the number of RBs used to transmit PUSCH. The value of this parameter can be indicated by the network device through signaling (such as RRC signaling or DCI) to the terminal device Or configured

PL _{b, f, c} (q _d ) is the path loss estimation value, which is used for path loss compensation, and the parameter value may be the path loss estimated by the terminal device through downlink measurement _{of the downlink reference signal q d;}

Δ _{TFb, f, c} (i) are parameter values related to the modulation mode and channel coding rate of the current PUSCH transmission;

f _{b, f, c} (i, l) are the power adjustment values determined according to the transmit power control (transmit power control, TPC) command of the closed-loop power control (power control) process l, where the TPC command may be passed by the network device The signaling (for example, RRC signaling, or DCI, etc.) is instructed or configured by the terminal device. Among them, the transmit power control command can also be referred to as a power control command for short.

Among them, for closed-loop power control, the terminal device side can support greater than or equal to one closed-loop power control process. For example, two closed-loop power control processes can be supported. For example, the closed-loop power control process is recorded as l, the power adjustment value of the closed-loop power control process l is recorded as f _{b, f, c} (i, l), when the terminal device supports two closed-loop power control processes, the value of l is 0 Or 1, used to select one of the two closed-loop power control processes supported by the terminal device to determine the power adjustment value. Among them, the type of closed-loop power control can be accumulated or absolute.

After receiving the TPC command of the closed-loop power control process l from the network device, when the terminal device determines f _b,f,c (i,l) according to the TPC command, the following cumulative closed-loop power control method or absolute closed-loop power control can be used Method to determine f _b,f,c (i,l):

Cumulative:

Among them, δ _{PUSCH, b, f, c} are the parameter values indicated by the TPC command (also referred to as TPC command values), and f _{b, f, c} (ii ₀ , l) are the closed-loop power adjustments of the PUSCH at the transmission timing ii ₀ value,

_{Represents the accumulation of the power adjustment steps indicated by the C(D i} ) TPC commands received between the transmission timing ii ₀ and the transmission timing i, where the PUSCH of the transmission timing i can also be understood as the i-th transmission of the PUSCH;

Absolute formula: f _{b, f, c} (i, l) = δ _{PUSCH, b, f, c} (i, l), where δ _{PUSCH, b, f, c} (i, l) is the transmission opportunity for network equipment The PUSCH of i is the value of the TPC command sent to the terminal device.

For other uplink channels, such as PUCCH or SRS, the uplink power control process is similar to the above PUSCH power control process, and the specific implementation details may be the same or different, which is not limited in the embodiment of the present application. For example, the uplink power control of PUCCH or SRS includes an open-loop power control part and a closed-loop power control part. Among them, the open-loop power control part includes path loss compensation; the power control adjustment value in the closed-loop power control part can be determined according to a TPC command, which can be instructed by the network device for the terminal device through signaling.

4) The closed-loop power control process includes the network device sending a TPC command to the terminal device, and the terminal device determines the power adjustment value according to the TPC command sent by the network device. For example, the TPC command can be indicated through the TPC (command) command (field) field in the downlink control information (downlink control information, DCI).

The DCI format (format) that can carry the TPC command field includes DCI format 0_0, DCI format 0_1, DCI format 1_0, DCI format 1_1, DCI format 2_2, or DCI format 2_3, which can be divided into two types:

1. DCI format used to schedule PUSCH or physical uplink control channel (PUCCH):

a) DCI format 0_0, or DCI format 0_1: The DCI is used to carry PUSCH transmission parameters. The DCI includes the TPC command field. The size of the TPC command field can be a positive integer (for example, 2) bits, where PUSCH The transmission parameters include one or more of the following parameters: transport block size (TBS), modulation mechanism, coding rate, modulation and coding scheme (MCS), time domain resource location, Frequency domain resource location, redundancy version (RV), and TPC commands, etc.;

b) DCI format 1_0, or DCI format 1_1: used to carry PUCCH transmission parameters, the DCI includes the TPC command field, and the size of the TPC command field is a positive integer (for example, 2) bits. Among them, the PUCCH transmission parameters include One or more of the following parameters: TBS, modulation scheme, coding rate, MCS, time domain resource location, frequency domain resource location, RV, and TPC commands, etc.;

2. DCI format specifically used to send TPC commands. This type of DCI can be sent to a group of terminal devices. As shown in Figure 2, the DCI can include one or more blocks. Each block TPC commands that can carry a terminal device:

a) DCI format 2_2: TPC command used to send PUCCH/PUSCH. The DCI includes one or more TPC fields, and the size of each TPC field can be a positive integer (for example, 2) bits;

b) DCI format 2_3: TPC command used to send sounding reference signal (sounding reference signal, SRS). The DCI includes one or more TPC fields. The size of each TPC field can be a positive integer (for example, 2) bits. ).

Exemplarily, the power adjustment step size δ indicated by the TPC command value of the uplink channel (for example, PUCCH, PUSCH, or SRS) may refer to Table 0-1 and Table 0-2.

Table 0-1

Referring to Table 0-1, for the TPC commands of DCI format 0_0, DCI format 0_1, DCI format 2_2 (indicating PUSCH) and DCI format 2_3, according to the TPC command (the 2-bit value of the TPC command field), the PUSCH or SRC corresponding cumulative or absolute

or

Value.

Table 0-2

Referring to Table 0-2, for the TPC commands of DCI format 1_0, DCI format 1_1 and DCI format 2_2 (indicating PUSCH), according to the TPC command (the value of 2 bits in the TPC command field), the corresponding cumulative formula for PUSCH can be determined Or absolute

Value.

5), the power level of the terminal equipment

Table 1

Power classPower class	Max TRP(dBm)Max TRP(dBm)
11	3535
22	23twenty three
33	23twenty three
44	23twenty three

In a possible implementation, as shown in Table 1, several power classes are defined, including 35dBm, 23dBm, 23dBm, and 23dBm. In the embodiment of the present application, the power level defines the maximum transmission rate of the terminal device (for example, defines the parameter P _{CMAX, f, c} (i) in the uplink transmission power of the PUSCH).

With the research of massive machine type communication (mMTC), there are one or more of the following machine type communication (MTC) terminal equipment in the communication scenario: video surveillance type terminal equipment, smart Home appliances, sensors, and smart wearable devices, etc. Generally, the battery life of the MTC-type terminal equipment is required to be several weeks or years. Therefore, how to reduce the power consumption of the MTC-type terminal equipment is an important research topic.

Based on the business characteristics and power requirements of MTC-type terminal equipment, lower power levels, such as 23dBm, 14dBm, 4dBm, etc., can be introduced for MTC-type terminal equipment to reduce the maximum transmission power and save power consumption. However, when the maximum transmit power of the terminal device is relatively small, for example, 4dBm, the closed-loop power control adjustment space and gain will be relatively small, and there is a waste of signaling in the system, and the signaling includes the TPC command. From the perspective of terminal equipment, terminal equipment needs to always maintain closed-loop power control, which has high computational complexity, which will also cause an increase in power consumption and waste of processing capacity. In order to solve these problems, the embodiments of the present application provide corresponding methods and devices.

The embodiments of the present application will be described in detail below with reference to the accompanying drawings. In addition, it needs to be understood that in the embodiments of the present application, at least one may also be described as one or more, and the multiple may be two, three, four or more, which is not limited in the present application.

In the embodiments of this application, "/" can indicate that the associated objects are in an "or" relationship. For example, A/B can indicate A or B; and "and/or" can be used to describe that there are three types of associated objects. The relationship, for example, A and/or B, can represent the three cases of A alone, A and B at the same time, and B alone, where A and B can be singular or plural. In order to facilitate the description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" may be used to distinguish technical features with the same or similar functions. The words "first" and "second" do not limit the quantity and execution order, and the words "first" and "second" do not limit the difference. In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or illustrations, and embodiments or design solutions described as "exemplary" or "for example" should not be interpreted as It is more preferable or advantageous than other embodiments or design solutions. Words such as "exemplary" or "for example" are used to present related concepts in a specific manner to facilitate understanding.

In addition, in the examples of this application, "of", "corresponding, relevant" and "corresponding" can sometimes be used together. It should be pointed out that when the difference is not emphasized, what is required is The meaning of the expression is consistent.

In the embodiments of the present application, the terminal device can determine whether the terminal device supports closed-loop power control by receiving signaling (information) sent by the network device, or (or) can be based on a predefined closed-loop power control threshold or the terminal device’s Configuration, etc., to determine whether the terminal device supports closed-loop power control, so that when it does not support closed-loop power control, the terminal device only determines the uplink transmission power based on the open-loop power control to reduce the uplink transmission power and reduce the computational complexity of the uplink transmission power control , To save processing resources and power consumption, which will be described in detail below in conjunction with specific embodiments.

[Embodiment One]

FIG. 3 is a schematic diagram of an uplink transmit power control process provided by an embodiment of the application, and the process includes:

S301: The network device sends instruction information to a terminal device, and the terminal device receives the instruction information.

Wherein, the indication information is used to indicate whether the terminal device supports closed-loop power control, or the indication information is used to indicate the first threshold value.

In the embodiment of the present application, the network device may be pre-configured or set with a first threshold value for determining whether the terminal device supports closed-loop power control, or the network device may determine the first threshold value according to a corresponding algorithm. The application examples are not limited. As an example, when the power level of the terminal device is greater than or equal to the first threshold, the terminal device supports closed-loop power control; when the power level of the terminal device is less than the first threshold, the terminal device does not support closed-loop power control; As another example, when the power level of the terminal device is greater than the first threshold, the terminal device supports closed-loop power control; when the power level of the terminal device is less than or equal to the first threshold, the terminal device does not support closed-loop power control . The first threshold value can be 4.5 decibel-milliwatt (dBm), 5dBm, or other real numbers, and can be configured according to communication requirements, or can be written into the network device in advance according to the protocol. This is not limited.

When the terminal device initially accesses the network device or after accessing the network device, it can send (report) the capability information of the terminal device, such as the power level information of the terminal device, to the network device. After the network device receives the power level information sent by the terminal device, it can determine whether the terminal device supports closed-loop power control according to the power level of the terminal device and the first threshold value, and can send instruction information to the terminal device to indicate whether the terminal device is Support closed-loop power control. Optionally, the power level of the terminal device may be carried by an RRC message or a media access control (media access control, MAC) control element (CE).

In addition, the power level can also be called the index value of Max TRP, that is, the index value of the maximum transmit rate. In a possible implementation, as shown in Table 2, several Max TRP index values and Max TRP index relationships are defined After the terminal device sends the power level information to the network device, the network device can query Table 2 according to the power level of the terminal device to obtain the Max TRP of the terminal device. According to the comparison result of the Max TRP of the terminal device and the first threshold value, Determine whether the terminal device supports closed-loop power control.

Table 2

Power classPower class	Max TRP(dBm)Max TRP(dBm)
11	3535
22	23twenty three
33	1414
44	44

As an example, the terminal device sends the information of the power level "4" to the network device, and the network device obtains the Max TRP of the terminal device as 4dBm according to the power level "4" of the terminal device and the query table 2. The comparison result of the threshold value determines whether the terminal device supports closed-loop power control.

In a possible implementation, the indication information may directly indicate whether the terminal device supports closed-loop power control. Exemplary: the indication information contains a 1-bit flag (flag), which is used to indicate whether the terminal device supports closed-loop power control. As an example, when the value of the flag is 0, it indicates that the terminal device does not support closed-loop power control, and when the value of the flag is 1, it indicates that the terminal device supports closed-loop power control; as another example, when the flag is 1, When the value of is 1, it indicates that the terminal device does not support closed-loop power control, and when the value of the flag is 0, it indicates that the terminal device supports closed-loop power control.

In another possible implementation, the indication information may also be used to indicate the first threshold value, which indirectly indicates whether the terminal device supports closed-loop power control. After receiving the instruction information, the terminal device determines whether the terminal device supports closed-loop power control according to the first threshold value indicated by the instruction information and the power level of the terminal device.

As an example, the indication information may be sent by the network device to the terminal device through a radio resource control (Radio Resource Control, RRC) message dedicated to the terminal device, or other RRC configuration messages. As another example, the network device may send the indication information to the terminal device through a broadcast message, a system message, MAC CE, or downlink control information (DCI).

Optionally, if the network device determines that the terminal device supports closed-loop power control, it can send closed-loop power control parameter information to the terminal device, such as configuring the method (process) for the terminal device to perform closed-loop power control. Taking PUSCH transmission as an example, the parameter information of the closed-loop power control of the PUSCH may include a power control accumulation (tpc-Accmulation) field/domain, which is used to indicate the manner of the closed-loop power control of the PUSCH. When tpc-Accmulation is configured to the first value (for example, disabled), it instructs the terminal device to adopt absolute closed-loop power control (absolute closed-loop power control process), when tpc-Accmulation is not configured to the first value When it is configured as a second value, such as when tpc-Accmulation is configured as enabled, it instructs the terminal device to adopt cumulative closed-loop power control (accumulative closed-loop power control process). This method can also be used for other uplink channels, such as SRS or PUCCH, which is not limited in the embodiment of the present application.

As an example, the network device may send the above-mentioned indication information and closed-loop power control parameter information to the terminal device. The terminal device determines whether the terminal device supports closed-loop power control according to the above-mentioned indication information. When it does, the terminal device according to the closed-loop power control parameters The information determines the uplink transmit power. As another example, the parameter information of the aforementioned closed-loop power control can be regarded as an example of the aforementioned indication information. For example, when a terminal device does not receive closed-loop power control parameter information from a network device, it is considered that the terminal device does not support closed-loop power control; when a terminal device receives closed-loop power control parameter information from a network device, it is considered that the terminal device supports closed-loop power control. Control, the terminal equipment determines the uplink transmit power according to the parameter information of the closed-loop power control.

It should be understood that the parameter information of the closed-loop power control may be sent before the instruction information, may also be sent after the instruction information, or may be sent simultaneously with the instruction information, which is not limited in this embodiment of the application.

Optionally, the parameter information of the closed-loop power control may also be predefined or pre-configured, for example, pre-configured to use cumulative closed-loop power control or absolute closed-loop power control.

S302: The terminal device determines whether the terminal device supports closed-loop power control according to the instruction information. When the terminal device supports closed-loop power control, perform S303. When the terminal device does not support closed-loop power control, perform S303. S304.

In the embodiment of the present application, the terminal device may determine whether to support closed-loop control according to the instruction information received from the network device. The indication information is used to indicate that the first threshold value is 4.5dBm. When the power level of the terminal device is greater than or equal to the first threshold value, the terminal device supports closed-loop power control; when the power level of the terminal device is less than the first threshold value When the terminal device does not support closed-loop power control as an example, when the power level of the terminal device is greater than or equal to 4.5dBm, such as 5dBm, the terminal device determines to support closed-loop power control; when the power level of the terminal device is less than 4.5dBm, such as 4dBm When the terminal device determines that it does not support closed-loop power control.

S303: The terminal device determines the uplink transmit power of the terminal device based on the open loop power control and the closed loop power control.

When the terminal device supports closed-loop power control, the network device can send a TPC command to the terminal device to instruct the terminal device to perform closed-loop power control according to the TPC command, that is, the network device can control the closed-loop power control of the terminal device by sending TPC commands to the terminal device carried out. Taking PUSCH as an example, the network equipment can determine the TPC command based on the resource allocation of PUSCH, the modulation and coding scheme of PUSCH, the received power of the demodulation reference signal (reference signal receiving power, RSRP) of the previously transmitted PUSCH, One or more of the signal to interference plus noise ratio (SINR) of the demodulation reference signal and the SINR of the previously transmitted PUSCH are determined, which is not limited in this embodiment of the application . As an example, when the terminal device supports closed-loop power control, the network device can send the TPC command to the terminal device through DCI, that is, the DCI is used to indicate the TPC command. Of course, the network device can also send the TPC command through other information. The terminal device for sending the TPC command is not limited in the embodiment of the present application.

Optionally, taking PUSCH as an example, the DCI format (format) of the DCI carrying the TPC command may be DCI format 0_0 or DCI format 0_1. Assuming that the DCI is sent by the network device to the first terminal device, the DCI is used to indicate the TPC command of the first terminal device, and is not used to indicate the TPC command of other terminal devices. Optionally, when the DCI format of the DCI that can carry the TPC command (command) is DCI format 0_0 or 0_1, the DCI may also be used to indicate the PUSCH TBS, time domain resource location, frequency domain resource location, MCS, etc. Transmission parameters. The transmission parameters of the PUSCH transmitted through DCI may also be referred to as PUSCH scheduling information.

Optionally, the network device may notify the terminal device of the TPC command of the PUSCH through the DCI format scrambled by TPC-PUSCH-radio network temporary identifier (RNTI), for example, DCI format2_2. DCI format 2_2 is the DCI format of the user's common packet. As shown in Figure 2, the DCI of each DCI format 2_2 can indicate the TPC commands of multiple terminal devices at the same time, and the TPC commands of each terminal device use different bits in the DCI. Instructs that multiple terminal devices detect the same DCI at the same time and parse out their own TPC commands on the specified bits. The designated bit may be configured by the network device to the terminal device, or may be determined by the terminal device according to a corresponding rule, which is not limited in the embodiment of the present application. This kind of DCI format can be applied to the manner in which the network device configures the transmission parameters or scheduling information of the PUSCH. This method includes the network device transmitting the transmission parameters of the PUSCH (such as PUSCH) through high-level signaling (such as RRC, MAC CE, or system messages) or DCI. The TBS, MCS, redundancy (redundancy version, RV), time domain resource location, frequency domain resource location, etc.) are configured to the terminal device, and the PUSCH transmission of the terminal device can be performed according to the scheduling information. At this time, the network device does not need The DCI for scheduling the PUSCH is issued, so the network device can issue the TPC command of the PUSCH of the terminal device through the DCI format (such as DCI format 2_2) scrambled by the TPC-PUSCH-RNTI.

After the network device receives the TPC command for scheduling the PUSCH, it can determine the uplink transmit power of the PUSCH based on the open-loop control strategy and the closed-loop power control strategy when performing PUSCH transmission. According to

Determine the uplink transmit power of this PUSCH transmission. Among them, the parameters in the formula can refer to the corresponding introduction in the previous section, which will not be repeated here.

S304: The terminal device determines the uplink transmit power of the terminal device based on open loop power control.

Optionally, taking PUSCH as an example, when the terminal device does not support closed-loop power control, when the network device schedules the terminal device to perform PUSCH transmission, there is no need to send a TPC command to the terminal device. For example, when the terminal device does not support closed-loop power control, no TPC command is required. The TPC command of the PUSCH needs to be indicated by the DCI, and the time domain resource location, frequency domain resource location, MCS, and/or other transmission parameters of the PUSCH can be carried in the DCI.

When the terminal device is performing PUSCH transmission, when determining the transmission power of the PUSCH transmission, there is no need to calculate the closed-loop power adjustment amount. The terminal device can determine the uplink transmission power of this PUSCH transmission based on the open-loop power control. According to

In the embodiment of this application, the above method that does not need to indicate the TPC command through DCI includes deleting or reinterpreting the TPC command field used to indicate the TPC command in the DCI. The deletion means that the DCI no longer carries (including) the TPC command field. Re-interpretation means that the DCI still carries the TPC command field, but the TPC command field is ignored, filled with a specific value (such as 0 or 1), or is no longer interpreted as a TPC command, such as can be interpreted as other command information. When the DCI no longer carries the TPC command field, the total bit length of the DCI can be reduced. When the same resource is used for transmission, the code rate of the DCI channel coding can be lower, so that better transmission performance can be obtained. When the TPC command field carried in the DCI can be interpreted as indication information of other functions, the use efficiency of the bits in the DCI is improved.

It should be understood that in addition to PUSCH, the uplink transmit power control provided in the embodiments of this application is also applicable to PUCCH, and/or SRS, etc., when the network device indicates the terminal device's PUCCH, and/or SRS, etc. transmission failure through the indication information. When supporting closed-loop power control, the network device may not send PUCCH and/or SRS TPC commands to the terminal device. When the terminal device performs uplink transmission power control, it no longer calculates the power of the closed-loop power control part of PUCCH and/or SRS. The adjustment amount, correspondingly, the TPC field in the DCI used for PUCCH and/or SRS power control adjustment can also be deleted or reinterpreted.

[Embodiment 2]

Figure 4 is a schematic diagram of an uplink transmit power control process provided by an embodiment of the application, and the process includes:

S401: The terminal device determines whether the terminal device supports closed-loop power control according to the power level of the terminal device and the second threshold value. When the terminal device supports closed-loop power control, perform S402. When the closed-loop power control is supported, S403 is performed.

Wherein, the second threshold value is predefined, or it can be described as the second threshold value is pre-configured.

S402: The terminal device determines the uplink transmit power of the terminal device based on the open loop power control and the closed loop power control.

S403: The terminal device determines the uplink transmit power of the terminal device based on open loop power control.

In the embodiment of the present application, the second threshold value used to determine whether the terminal device supports closed-loop power control may be predefined, for example, the second threshold value is predefined by a protocol and stored in the terminal device and the network device respectively. As an example, when the power level of the terminal device is greater than or equal to the second threshold value, the terminal device supports closed-loop power control; when the power level of the terminal device is less than the second threshold value, the terminal device does not support closed-loop power control; As another example, when the power level of the terminal device is greater than the second threshold, the terminal device supports closed-loop power control; when the power level of the terminal device is less than or equal to the second threshold, the terminal device does not support closed-loop power control . In addition, the first threshold value may be 4 dBm, 4.5 dBm, 5 dBm, or other real numbers, which is not limited in the embodiment of the present application. The second threshold value may be the same as or different from the foregoing first threshold value, which is not limited in the embodiment of the present application.

The terminal device can determine whether the terminal device supports closed-loop power control according to its own power level and the second threshold value. The terminal device can send (report) the capability information of the terminal device to the network device, such as reporting the power level of the terminal device. For the reporting method, reference may be made to the description in the first embodiment above, which will not be repeated here. The network device may also determine whether the terminal device supports closed-loop power control according to the power level of the terminal device and the second threshold value sent by the terminal device.

In a possible implementation, the network device may send closed-loop power control parameter information to the terminal device. For specific details, please refer to the description in the foregoing embodiment 1, which will not be repeated here. Optionally, the parameter information of the closed-loop power control may also be predefined or pre-configured, for example, pre-configured to use cumulative closed-loop power control or absolute closed-loop power control.

When the terminal device supports closed-loop power control, the network device can send a TPC command to the terminal device, which is used to instruct the terminal device to perform closed-loop power control according to the TPC command; when the terminal device does not support closed-loop power control, the network device may not send a TPC command to the terminal The device sends TPC commands. For specific details, please refer to the description in the foregoing embodiment 1, which will not be repeated here.

In the embodiments of the present application, when the terminal device supports or does not support closed-loop power control, the implementation of determining the uplink transmit power by the terminal device may refer to the description in the foregoing embodiment 1, and the repetition will not be repeated.

[Embodiment Three]

Fig. 5 is a schematic diagram of an uplink transmit power control process provided by an embodiment of the application, and the process includes:

S501: The terminal device sends second indication information to the network device, the network device receives the second indication information, and when the terminal device supports closed-loop power control, perform S502, and when the terminal device does not support closed-loop power control , Go to S503.

Wherein, the second indication information is used to indicate whether the terminal device supports closed-loop power control.

S502: The terminal device determines the uplink transmit power of the terminal device based on the open loop power control and the closed loop power control.

S503: The terminal device determines the uplink transmit power of the terminal device based on open loop power control.

In the embodiment of the present application, the terminal device can determine whether to support closed-loop power control according to whether the terminal device itself supports closed-loop power control capability information, the configuration of the terminal device, etc., and can send second indication information to the network device to instruct the terminal device Whether to support closed-loop power control.

In the above-mentioned embodiments provided in the present application, the methods provided in the embodiments of the present application are respectively introduced from the perspective of network equipment, terminal equipment, and interaction between the network equipment and the terminal equipment. In order to realize the functions in the methods provided in the above embodiments of the present application, the network equipment and the terminal equipment may include hardware structures and/or software modules, which are implemented in the form of hardware structures, software modules, or hardware structures plus software modules. . Whether a certain function among the above-mentioned functions is executed by a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraint conditions of the technical solution.

In the case of an integrated unit (module), FIG. 6 shows a possible exemplary block diagram of a communication device involved in an embodiment of the present application. The device 600 may be implemented by software, hardware, or software plus hardware. The form exists, and the embodiment of this application does not limit it. The apparatus 600 may include: a processing unit 602 and a transceiver unit 603.

In a possible design, the processing unit 602 is used to implement corresponding processing functions. The transceiver unit 603 is used to support the communication between the device 600 and other network entities. Optionally, the transceiving unit 603 may include a receiving unit and/or a sending unit, which are used to perform receiving and sending operations, respectively. Optionally, the device 600 may further include a storage unit 601 for storing the program code and/or data of the device 600.

The apparatus 600 can be used to implement the function of the terminal device in any of the foregoing embodiments. The processing unit 602 may support the apparatus 600 to perform the actions of the terminal device in the foregoing method examples. Alternatively, the processing unit 602 mainly executes the internal actions of the terminal device in the method example, and the transceiving unit 603 can support the communication between the apparatus 600 and the network device.

In a possible embodiment, the transceiver unit 603 is configured to receive instruction information from the network device; the processing unit 602 is configured to determine whether the terminal device supports closed-loop power control according to the instruction information;

The processing unit 602 is further configured to determine the uplink transmit power of the terminal device based on open loop power control when the terminal device does not support closed loop power control; when the terminal device supports closed loop power control, based on open loop power control Power control and closed-loop power control determine the uplink transmit power of the terminal device.

In a possible design, the indication information is used to indicate whether the terminal device supports closed-loop power control.

In a possible design, the indication information is used to indicate the first threshold; when the processing unit 602 determines whether the terminal device supports closed-loop power control according to the indication information, it is specifically used when the terminal When the power level of the device is greater than or equal to the first threshold value, it is determined that the terminal device supports closed-loop power control; when the power level of the terminal device is less than the first threshold value, it is determined that the terminal device is not Support closed-loop power control.

In a possible design, the transceiver unit 603 is further configured to send the power level information of the terminal device to the network device.

In a possible design, the transceiver unit 603 is further configured to receive a TPC command from a network device when the terminal device supports closed-loop power control, where the closed-loop power control is executed according to the TPC command.

In a possible design, the transceiver unit 603 is further configured to receive downlink control information DCI from a network device. When the terminal device supports closed-loop power control, the DCI is used to indicate a TPC command. The power control is executed according to the TPC command.

In a possible design, the transceiver unit 603 is further configured to receive DCI from a network device. When the terminal device does not support closed-loop power control, the DCI is not used to indicate the TPC command.

In another possible embodiment, the processing unit 602 is configured to determine whether the terminal device supports closed-loop power control according to the power level of the terminal device and a second threshold value, wherein the second threshold value Is predefined;

In a possible design, when the processing unit 602 determines whether the terminal device supports closed-loop power control according to the power level of the terminal device and the second threshold value, it is specifically used when the power level of the terminal device is When it is greater than or equal to the second threshold value, it is determined that the terminal device supports closed-loop power control; when the power level of the terminal device is less than the second threshold value, it is determined that the terminal device does not support closed-loop power control .

In a possible design, the transceiver unit 603 is configured to send information about the power level of the terminal device to the network device.

In another possible embodiment, the transceiver unit 603 is configured to send second indication information to a network device, where the second indication information is used to indicate whether the terminal device supports closed-loop power control;

The processing unit 602 is configured to determine the uplink transmit power of the terminal device based on open loop power control when the terminal device does not support closed loop power control; when the terminal device supports closed loop power control, based on open loop power control and The closed-loop power control determines the uplink transmit power of the terminal device.

The division of modules in the embodiments of the present application is illustrative, and is only a logical function division. In actual implementation, there may be other division methods. In addition, the functional modules in the various embodiments of the present application may be integrated into one module. Or in a processor, it may exist alone physically, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, software function modules, or hardware plus software, which is not limited in the embodiments of the present application. For example, the foregoing processing unit 602 may be implemented by a processor, the foregoing transceiving unit 603 may be implemented by a transceiver or a communication interface, and the foregoing storage unit 601 may be implemented by a memory.

As shown in FIG. 7, an embodiment of the present application further provides a communication device 700, which is used to implement the function of the terminal device in the foregoing embodiment. The communication device 700 includes a processor 710 and a communication interface 730. The communication device 700 may further include a memory 720. In the embodiment of the present application, the communication interface may be a transceiver, a bus, a bus interface, a pin, or other device, circuit, or device that can implement a communication function, and the embodiment of the present application does not limit it. In FIG. 7, it is shown that the communication interface 730 is a transceiver 730 as an example.

In a possible design, the processor 710 may implement the function of the processing unit 602 in the foregoing embodiment, and the communication interface 730 may implement the function of the transceiver unit 603 in the foregoing embodiment.

In a possible design, the memory 720 stores instructions or programs or data, and the memory 720 may be used to implement the functions of the storage unit 601 in the foregoing embodiment. The processor 710 is configured to read instructions or programs or data stored in the memory 720. When the instructions or programs stored in the memory 720 are executed, the processor 710 is configured to perform the operations performed by the processing unit 602 in the foregoing embodiment, and the transceiver 730 is configured to perform the operations performed by the transceiver unit 603 in the foregoing embodiment.

It should be understood that the communication device 600 or 700 of the embodiment of the present application may correspond to the terminal device in the communication method (FIG. 3 or FIG. 4 or FIG. 5) of the embodiment of the present application, and the operation of each module in the communication device 600 or 700 The and/or functions are used to implement the corresponding procedures of the respective methods in FIG. 3 or FIG. 4 or FIG. 5 respectively. For the sake of brevity, details are not described herein again. The communication device 600 or 700 may be a terminal device, or may be another device capable of realizing the function of the terminal device, such as a chip system. This other device can be installed in the terminal device or used in conjunction with the terminal device.

As another form of this embodiment, a computer-readable storage medium is provided, and an instruction is stored thereon. When the instruction is executed, the method on the terminal device side in the foregoing method embodiment can be executed.

As another form of this embodiment, a computer program product containing instructions is provided. When the instructions are executed, the method on the terminal device side in the foregoing method embodiment can be executed.

As another form of this embodiment, a chip is provided. The chip includes a processor for executing the method on the terminal device side in the foregoing method embodiment. The chip may also include a memory, the processor is coupled with the memory, and the processor is configured to execute a program or instruction stored in the memory. When the program or instruction is executed, the processor may execute the above The method on the terminal device side in the method embodiment.

In the case of an integrated unit (module), FIG. 8 shows a possible exemplary block diagram of another communication device involved in an embodiment of the present application. The communication device 800 may be implemented by software, hardware, or software. The form of hardware exists, which is not limited in the embodiment of the present application. The apparatus 800 may include: a processing unit 802 and a transceiver unit 803.

In a possible design, the processing unit 802 is used to implement corresponding processing functions. The transceiver unit 803 is used to support communication between the device 800 and other network entities. Optionally, the transceiving unit 803 may include a receiving unit and/or a sending unit, which are used to perform receiving and sending operations, respectively. Optionally, the device 800 may further include a storage unit 801 for storing program codes and/or data of the device 800.

The apparatus 800 can be used to implement the function of the network device in any of the foregoing embodiments. The processing unit 802 may support the apparatus 800 to execute the actions of the network device in the above method examples. Alternatively, the processing unit 802 mainly executes the internal actions of the network device in the method example, and the transceiving unit 803 can support the communication between the apparatus 800 and the terminal device.

In one embodiment, the transceiver unit 803 is configured to send indication information to the terminal device, the indication information is used to indicate whether the terminal device supports closed-loop power control, or the indication information is used to indicate the first threshold value.

In a possible design, the transceiver unit 803 is further configured to send a TPC command to the terminal device when the terminal device supports closed-loop power control.

In a possible design, the transceiver unit 803 is further configured to send downlink control information DCI to the terminal device. When the terminal device supports closed-loop power control, the DCI is used to indicate a TPC command.

In a possible design, the transceiver unit 803 is further configured to send DCI to the terminal device. When the terminal device does not support closed-loop power control, the DCI is not used to indicate the TPC command.

In a possible design, the transceiver unit 803 is further configured to receive information about the power level of the terminal device from the terminal device; the processing unit 802 is configured to receive power level information of the terminal device according to the power level of the terminal device and the first A threshold value determines whether the terminal device supports closed-loop power control.

In a possible embodiment, the transceiver unit 803 is configured to send a TPC command to the terminal device when the terminal device supports closed-loop power control.

In a possible embodiment, the transceiver unit 803 is configured to send downlink control information DCI to a terminal device. When the terminal device supports closed-loop power control, the DCI is used to indicate a TPC command.

In a possible embodiment, the transceiver unit 803 is configured to send downlink control information DCI to a terminal device. When the terminal device does not support closed-loop power control, the DCI is not used to indicate a TPC command.

In a possible design, the transceiving unit 803 is further configured to receive information about the power level of the terminal device from the terminal device; the processing unit 802 is configured to receive power level information of the terminal device and the first The second threshold value is used to determine whether the terminal device supports closed-loop power control, wherein the second threshold value is predefined.

In another possible embodiment, the transceiver unit 803 is configured to receive second indication information from a terminal device, where the second indication information is used to indicate whether the terminal device supports closed-loop power control.

The division of modules in the embodiments of the present application is illustrative, and is only a logical function division. In actual implementation, there may be other division methods. In addition, the functional modules in the various embodiments of the present application may be integrated into one module. Or in a processor, it may exist alone physically, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, software function modules, or hardware plus software, which is not limited in the embodiments of the present application. For example, the foregoing processing unit 802 may be implemented by a processor, the foregoing transceiver unit 803 may be implemented by a transceiver or a communication interface, and the foregoing storage unit 801 may be implemented by a memory.

As shown in FIG. 9, an embodiment of the present application also provides a communication device 900, which is used to implement the function of the network device in the foregoing embodiment. The communication device 900 includes a processor 910 and a communication interface 930. The communication device 900 may also include a memory 920. In the embodiment of the present application, the communication interface may be a transceiver, a bus, a bus interface, a pin, or other device, circuit, or device that can implement a communication function, and the embodiment of the present application does not limit it. In FIG. 9, it is shown that the communication interface 930 is a transceiver 930 as an example.

In a possible design, the processor 910 may implement the function of the processing unit 802 in the foregoing embodiment, and the communication interface 930 may implement the function of the transceiver unit 803 in the foregoing embodiment.

In a possible design, the memory 920 stores instructions or programs or data, and the memory 920 may be used to implement the functions of the storage unit 801 in the foregoing embodiment. The processor 910 is configured to read instructions or programs or data stored in the memory 920. When the instructions or programs stored in the memory 920 are executed, the processor 910 is configured to perform the operations performed by the processing unit 802 in the foregoing embodiment, and the transceiver 930 is configured to perform the operations performed by the transceiver unit 803 in the foregoing embodiment.

It should be understood that the communication device 800 or 900 of the embodiment of the present application may correspond to the network device in the communication method (FIG. 3 or FIG. 4 or FIG. 5) of the embodiment of the present application, and the operation of each module in the communication device 800 or 900 The and/or functions are used to implement the corresponding procedures of the respective methods in FIG. 3 or FIG. 4 or FIG. 5 respectively. For the sake of brevity, details are not described herein again. The communication device 800 or 900 may be a network device, or another device capable of realizing the function of the network device, such as a chip system. The other device can be installed in the network equipment or used in conjunction with the network equipment.

As another form of this embodiment, a computer-readable storage medium is provided, and instructions are stored thereon. When the instructions are executed, the method on the network device side in the foregoing method embodiment can be executed.

As another form of this embodiment, a computer program product containing instructions is provided. When the instructions are executed, the method on the network device side in the foregoing method embodiment can be executed.

As another form of this embodiment, a chip is provided. The chip includes a processor for executing the method on the network device side in the foregoing method embodiment. The chip may also include a memory, the processor is coupled with the memory, and the processor is configured to execute a program or instruction stored in the memory. When the program or instruction is executed, the processor may execute the above The method on the network device side in the method embodiment.

In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which may implement or Perform the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.

In the embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), for example Random-access memory (random-access memory, RAM). The memory is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited to this. The memory in the embodiments of the present application may also be a circuit or any other device capable of realizing a storage function for storing program instructions and/or data.

The technical solutions provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. 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 invention are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a terminal device, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission 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.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (DVD)), or a semiconductor medium.

In the embodiments of the present application, provided that there is no logical contradiction, the embodiments can be mutually cited. For example, the methods and/or terms between the method embodiments can be mutually cited, such as the functions and/or functions between the device embodiments. Or terms may refer to each other, for example, functions and/or terms between the device embodiment and the method embodiment may refer to each other.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, then this application is also intended to include these modifications and variations.

Claims

An uplink transmit power control method, characterized in that it includes:

Receive instruction information from the network device;

According to the instruction information, determine whether the terminal device supports closed-loop power control;

When the terminal device does not support closed-loop power control, determine the uplink transmit power of the terminal device based on the open-loop power control;

When the terminal device supports closed-loop power control, the uplink transmit power of the terminal device is determined based on the open-loop power control and the closed-loop power control.
The method according to claim 1, wherein the indication information is used to indicate whether the terminal device supports closed-loop power control.
The method according to claim 1, wherein the indication information is used to indicate a first threshold; and the determining whether a terminal device supports closed-loop power control according to the indication information comprises:

When the power level of the terminal device is greater than or equal to the first threshold value, the terminal device supports closed-loop power control;

When the power level of the terminal device is less than the first threshold value, the terminal device does not support closed-loop power control.
The method according to any one of claims 1-3, wherein the method further comprises:

Sending the information of the power level of the terminal device to the network device.
An uplink transmit power control method, characterized in that it includes:

Determine whether the terminal device supports closed-loop power control according to the power level of the terminal device and a second threshold value, where the second threshold value is predefined;

When the terminal device does not support closed-loop power control, determine the uplink transmit power of the terminal device based on the open-loop power control;

When the terminal device supports closed-loop power control, the uplink transmit power of the terminal device is determined based on the open-loop power control and the closed-loop power control.
The method according to claim 5, wherein the determining whether the terminal device supports closed-loop power control according to the power level of the terminal device and the second threshold value comprises:

When the power level of the terminal device is greater than or equal to the second threshold value, the terminal device supports closed-loop power control;

When the power level of the terminal device is less than the second threshold value, the terminal device does not support closed-loop power control.
The method according to claim 5 or 6, wherein the method further comprises:

Send the information of the power level of the terminal device to the network device.
An uplink transmit power control method, characterized in that it includes:

Sending second indication information to the network device, where the second indication information is used to indicate whether the terminal device supports closed-loop power control;

When the terminal device does not support closed-loop power control, determine the uplink transmit power of the terminal device based on the open-loop power control;

When the terminal device supports closed-loop power control, the uplink transmit power of the terminal device is determined based on the open-loop power control and the closed-loop power control.
8. The method according to any one of claims 1-8, wherein the method further comprises:

When the terminal device supports closed-loop power control, a transmit power control TPC command is received from the network device, where the closed-loop power control is executed according to the TPC command.
8. The method according to any one of claims 1-8, wherein the method further comprises:

Receive downlink control information DCI from a network device. When the terminal device supports closed-loop power control, the DCI is used to indicate a TPC command, where the closed-loop power control is executed according to the TPC command.
The method according to any one of claims 1-10, wherein the method further comprises:

The DCI is received from the network device, and when the terminal device does not support closed-loop power control, the DCI is not used to indicate the TPC command.
An uplink transmit power control method, characterized in that it includes:

Send instruction information to the terminal device, where the instruction information is used to indicate whether the terminal device supports closed-loop power control, or the instruction information is used to indicate the first threshold value.
The method of claim 12, wherein the method further comprises:

When the terminal device supports closed-loop power control, a transmit power control TPC command is sent to the terminal device.
The method of claim 12, wherein the method further comprises:

Sending downlink control information DCI to the terminal device, and when the terminal device supports closed-loop power control, the DCI is used to indicate a TPC command.
The method according to any one of claims 12-14, wherein the method further comprises:

Sending the DCI to the terminal device, and when the terminal device does not support closed-loop power control, the DCI is not used to indicate the TPC command.
The method according to any one of claims 12-15, wherein the method further comprises:

Receiving the information of the power level of the terminal device from the terminal device.
An uplink transmit power control method, characterized in that it includes:

When the terminal device supports closed-loop power control, a transmit power control TPC command is sent to the terminal device.
An uplink transmit power control method, characterized in that it includes:

Send downlink control information DCI to a terminal device, and when the terminal device supports closed-loop power control, the DCI is used to indicate a transmit power control TPC command.
An uplink transmit power control method, characterized in that it includes:

Send downlink control information DCI to the terminal device, and when the terminal device does not support closed-loop power control, the DCI is not used to indicate the transmit power control TPC command.
The method according to any one of claims 17-19, wherein the method further comprises:

Receiving the information of the power level of the terminal device from the terminal device.
An uplink transmit power control method, characterized in that it includes:

Receiving second indication information from a terminal device, where the second indication information is used to indicate whether the terminal device supports closed-loop power control.
The method of claim 21, wherein the method further comprises:

When the terminal device supports closed-loop power control, a transmit power control TPC command is sent to the terminal device.
The method of claim 21, wherein the method further comprises:

Send downlink control information DCI to the terminal device, and when the terminal device supports closed-loop power control, the DCI is used to indicate a TPC command.
The method according to claim 21 or 23, wherein the method further comprises:

Sending the DCI to the terminal device, and when the terminal device does not support closed-loop power control, the DCI is not used to indicate the TPC command.
A communication device, characterized by being used to implement the method according to any one of claims 1-11.
A communication device, characterized by comprising a processor and a memory, the memory is coupled to the processor, and the processor is configured to execute the method according to any one of claims 1-11.
A communication device, characterized in that it comprises a processor and a communication interface,

The processor receives instruction information from the network device by using the communication interface;

The processor is configured to determine whether the terminal device supports closed-loop power control according to the instruction information;

When the terminal device does not support closed-loop power control, the processor is configured to determine the uplink transmit power of the terminal device based on the open-loop power control;

When the terminal device supports closed-loop power control, the processor is configured to determine the uplink transmit power of the terminal device based on the open-loop power control and the closed-loop power control.
A communication device, characterized by comprising a processor, used for:

Determine whether the terminal device supports closed-loop power control according to the power level of the terminal device and a second threshold value, where the second threshold value is predefined;

When the terminal device does not support closed-loop power control, determine the uplink transmit power of the terminal device based on the open-loop power control;

When the terminal device supports closed-loop power control, the uplink transmit power of the terminal device is determined based on the open-loop power control and the closed-loop power control.
A communication device, characterized in that it comprises a processor and a communication interface,

The processor uses the communication interface to send second indication information to a network device, where the second indication information is used to indicate whether the terminal device supports closed-loop power control;

When the terminal device does not support closed-loop power control, the processor is configured to determine the uplink transmit power of the terminal device based on the open-loop power control;

When the terminal device supports closed-loop power control, the processor is configured to determine the uplink transmit power of the terminal device based on the open-loop power control and the closed-loop power control.
A communication device, characterized by being used to implement the method according to any one of claims 12-24.
A communication device, comprising a processor and a memory, the memory is coupled to the processor, and the processor is configured to execute the method according to any one of claims 12-24.
A communication device, characterized in that it comprises a processor and a communication interface,

The processor uses the communication interface to send instruction information to a terminal device, where the instruction information is used to indicate whether the terminal device supports closed-loop power control, or the instruction information is used to indicate a first threshold value.
A communication device, characterized in that it comprises a processor and a communication interface,

The processor receives second indication information from a terminal device by using the communication interface, where the second indication information is used to indicate whether the terminal device supports closed-loop power control.
A communication system, characterized by comprising the communication device according to any one of claims 25-29, and the communication device according to any one of claims 30-33.
A computer-readable storage medium, characterized in that a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction is executed by one or more processors, the implementation is as claimed in claim 1- The method of any one of 24.
A computer program product, characterized in that, the computer program product includes a computer program or instruction, and when the computer program or instruction is executed by one or more processors, the computer program or instruction implements the one described in any one of claims 1-24. The method described.