CN114747260A

CN114747260A - Uplink transmission power control method and device

Info

Publication number: CN114747260A
Application number: CN201980102632.XA
Authority: CN
Inventors: 侯海龙; 金哲; 郑娟; 李超君
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2022-07-12
Anticipated expiration: 2039-12-17
Also published as: WO2021120022A1; CN114747260B

Abstract

The embodiment of the application relates to the technical field of communication, and discloses an uplink transmission power control method and device, which are beneficial to enabling terminal equipment to determine uplink transmission power based on open-loop power control when the power level of the terminal equipment is low, and reducing the calculation complexity of the uplink transmission power control of the terminal equipment, so that processing resources are saved, and power consumption is reduced. The method comprises the following steps: the terminal equipment receives indication information from the network equipment; the terminal equipment determines whether the terminal equipment supports closed loop power control or not according to the indication information; when the terminal equipment does not support closed-loop power control, the terminal equipment determines the uplink transmitting power of the terminal equipment based on open-loop power control; and when the terminal equipment supports closed-loop power control, the terminal equipment determines the uplink transmitting power of the terminal equipment based on open-loop power control and closed-loop power control.

Description

Uplink transmission power control method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for controlling uplink transmit power.

Background

With the development of communication technology and the improvement of user requirements, terminal devices in a communication scene gradually exhibit characteristics of large quantity, multiple forms and the like. For example, in an industrial automation scenario, there are a large number of monitoring devices, machines, sensors, etc. in a plant; in the family and life scenes, a large number of mobile phones, flat panels, wearable devices, smart home appliances, vehicle-mounted terminal devices, or the like exist.

Disclosure of Invention

The embodiment of the application provides an uplink transmission power control method and device, which are used for reducing the power consumption of terminal equipment.

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

In the embodiment of the present application, the uplink transmission power control method described may be implemented by a terminal device, or may be implemented by a component of the terminal device, for example, by a processing chip, a circuit, and other components in the terminal device. By adopting the method, the terminal equipment determines whether to support closed-loop power control according to the indication information of the network equipment, and determines the uplink transmitting power based on the open-loop power control when the closed-loop power control is not supported, and the closed-loop power control part does not need to be considered, thereby being beneficial to reducing the calculation complexity of the uplink transmitting power control of the terminal equipment, saving the processing resources of the terminal equipment and reducing the power consumption of the terminal equipment.

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

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

In one possible design, the method further includes: and sending the information of the power grade of the terminal equipment to the network equipment. In the design, the terminal equipment sends the power grade information of the terminal equipment to the network equipment, so that the network equipment can know the power grade of the terminal equipment, and the network equipment can conveniently and accurately judge whether the terminal equipment supports closed-loop power control according to the power grade of the terminal equipment.

In one possible design, the method further includes: receiving a transmit power control, TPC, command from a network device when the terminal device supports closed loop power control, wherein the closed loop power control is performed in accordance with the TPC command. In the design, when the terminal equipment supports closed-loop power control, the terminal equipment receives the TPC command from the network equipment, so that the terminal equipment can perform closed-loop power control according to the TPC command received from the network equipment, accurately determine uplink transmitting power and further ensure that the network equipment receives signals (information) transmitted by the terminal equipment at proper receiving power.

In one possible design, the method further includes: receiving Downlink Control Information (DCI) from a network device, wherein the DCI is used for indicating a TPC command when the terminal device supports closed-loop power control, and the closed-loop power control is executed according to the TPC command. In the design, when the terminal device supports closed-loop power control, the terminal device receives the DCI from the network device to obtain the TPC command indicated by the DCI, so that the terminal device can timely receive the TPC command from the network device according to the dynamic signaling to perform closed-loop power control, accurately determine uplink transmission power, and further ensure that the network device receives signals (information) transmitted by the terminal device with proper received power.

In one possible design, the method further includes: receiving DCI from a network device, the DCI not being used to indicate the TPC command when the terminal device does not support closed loop power control. 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, and the TPC command field in the DCI for indicating the TPC command may be deleted or re-interpreted as another field for transmitting other information, which is beneficial to saving signaling and avoiding waste of signaling.

In a second aspect, an embodiment of the present application provides a method for controlling uplink transmit power, where the method includes: determining whether a terminal device supports closed loop power control based on a power class of the terminal device and a second threshold, wherein the second threshold is predefined; when the terminal equipment does not support closed-loop power control, determining the uplink transmitting power of the terminal equipment based on open-loop power control; and when the terminal equipment supports closed-loop power control, determining the uplink transmitting power of the terminal equipment based on the open-loop power control and the closed-loop power control.

In the embodiment of the present application, the uplink transmit power control method described in the embodiment may be implemented by a terminal device, or may be implemented by a component of the terminal device, for example, a processing chip, a circuit, or the like in the terminal device. By adopting the method, the terminal equipment determines whether closed-loop power control is supported or not according to the power grade of the terminal equipment and the predefined second threshold value, and determines the uplink transmitting power based on open-loop power control when the closed-loop power control is not supported, and the closed-loop power control part does not need to be considered, thereby being beneficial to reducing the calculation complexity of the uplink transmitting power control of the terminal equipment, saving the processing resources of the terminal equipment and reducing the power consumption of the terminal equipment.

In one possible design, determining whether the terminal device supports closed loop power control based on the power class of the terminal device and a second threshold value includes: when the power grade of the terminal equipment is greater than or equal to the second threshold value, the terminal equipment supports closed-loop power control; and when the power level of the terminal equipment is smaller than the second threshold value, the terminal equipment does not support closed-loop power control.

In one possible design, the method further includes: and sending the information of the power level of the terminal equipment to network equipment.

In one possible design, the method further includes: receiving a TPC command from a network device when the terminal device supports closed loop power control, wherein the closed loop power control is performed in accordance with the TPC command.

In one possible design, the method further includes: receiving Downlink Control Information (DCI) from a network device, wherein the DCI is used for indicating a TPC command when the terminal device supports closed-loop power control, and the closed-loop power control is executed according to the TPC command.

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

The technical effects achieved by any one of the possible designs of the second aspect can be achieved by referring to the technical effects achieved by the first aspect, and will not be repeated herein.

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

In the embodiment of the present application, the uplink transmission power control method described may be implemented by a terminal device, or may be implemented by a component of the terminal device, for example, by a processing chip, a circuit, and other components in the terminal device. By adopting the method, the terminal equipment can send second indication information for indicating whether the terminal equipment supports closed-loop power control to the network equipment according to whether the terminal equipment has the capacity of supporting closed-loop power control, so that the network equipment can conveniently know whether the terminal equipment supports closed-loop power control, and when the closed-loop power control is not supported, the terminal equipment determines the uplink transmitting power based on the open-loop power control, the closed-loop power control part does not need to be considered, the calculation complexity of the uplink transmitting power control of the terminal equipment is favorably reduced, and therefore the processing resources of the terminal equipment are saved and the power consumption of the terminal equipment is reduced.

The technical effects achieved by any one of the possible designs of the third aspect can be achieved by referring to the technical effects achieved by the first aspect, and detailed descriptions thereof are omitted.

In a fourth aspect, an embodiment of the present application provides a method for controlling uplink transmit power, where the method includes: and sending indication information to the terminal equipment, wherein the indication information is used for indicating whether the terminal equipment supports closed loop power control or not, or the indication information is used for indicating a first threshold value.

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

In one possible design, the method further includes: and when the terminal equipment supports closed-loop power control, transmitting a TPC command to the terminal equipment.

In one possible design, the method further includes: and sending Downlink Control Information (DCI) to the terminal equipment, wherein the DCI is used for indicating a TPC command when the terminal equipment supports closed loop power control.

In one possible design, the method further includes: and sending DCI to the terminal equipment, wherein the DCI is not used for indicating the TPC command when the terminal equipment does not support closed-loop power control.

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

In a fifth aspect, an embodiment of the present application provides a method for controlling uplink transmit power, where the method includes: and when the terminal equipment supports closed-loop power control, transmitting a TPC command to the terminal equipment.

In a sixth aspect, an embodiment of the present application provides a method for controlling uplink transmit power, where the method includes: and sending Downlink Control Information (DCI) to the terminal equipment, wherein the DCI is used for indicating a TPC command when the terminal equipment supports closed-loop power control, and the DCI is not used for indicating the TPC command when the terminal equipment does not support closed-loop power control.

In a seventh aspect, an embodiment of the present application provides a method for controlling uplink transmit power, where the method includes: and receiving second indication information from the terminal equipment, wherein the second indication information is used for indicating whether the terminal equipment supports closed loop power control.

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

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

In one possible design, the apparatus includes a memory and a processor, the memory is used for storing programs or instructions executed by the processor, and when the programs or instructions are executed by the processor, the apparatus may perform the method of the first aspect, the method of the second aspect, or the method of the third aspect.

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

In a ninth aspect, an embodiment of the present application provides a communication apparatus, where the apparatus has a function of implementing the method in the fourth aspect, the method in the fifth aspect, the method in the sixth aspect, or the method in the seventh aspect, and the function may be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions, such as a transceiver unit and a processing unit.

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

In one possible design, the apparatus includes a memory and a processor, the memory is used for storing programs or instructions executed by the processor, and when the programs or instructions are executed by the processor, the apparatus may perform the method of the 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 apparatus may be a network device.

In a tenth aspect, an embodiment of the present application provides a system, which includes the communication apparatus in the eighth aspect, and the communication apparatus in the ninth aspect.

In an eleventh aspect, an embodiment of the present application provides a communication apparatus, which includes a processor, a memory, and a communication interface, where the communication interface is configured to receive a signal or transmit a signal; the memory for storing programs or instruction codes; the processor is configured to invoke the program or instruction code from the memory to perform the method according to the first aspect or the method according to the second aspect or the method according to the third aspect.

In a twelfth aspect, an embodiment of the present application provides a communication apparatus, which includes a processor, a memory, and a communication interface, where the communication interface is configured to receive a signal or transmit a signal; the memory for storing a program or instruction code; the processor is configured to call the program or instruction code from the memory to perform the method according to the fourth aspect or the method according to the fifth aspect or the method according to the sixth aspect or the method according to the seventh aspect.

In a thirteenth aspect, an embodiment of the present application provides a communication device, which includes a processor and an interface circuit, where the interface circuit is configured to receive a program or instruction code and transmit the program or instruction code to the processor; the processor executes the program or instruction code to perform the method of the first aspect or the method of the second aspect or the method of the third aspect.

In a fourteenth aspect, an embodiment of the present application provides a communication device, which includes a processor and an interface circuit, where the interface circuit is configured to receive a program or instruction code and transmit the program or instruction code to the processor; the processor executes the program or instruction code to perform the method of the fourth aspect or the method of the fifth aspect or the method of the sixth aspect or the method of the seventh aspect.

In a fifteenth aspect, the present application provides a computer-readable storage medium for storing a program or instructions which, when executed, cause the method of the first aspect or the method of the second aspect or the method of the third aspect to be implemented.

In a sixteenth aspect, embodiments of the present application provide a computer-readable storage medium for storing a program or instructions which, when executed, cause the method of the fourth aspect or the method of the fifth aspect or the method of the sixth aspect or the method of the seventh aspect to be implemented.

In a seventeenth aspect, embodiments of the present application provide a computer program product comprising instructions that, when executed, cause the method of the first aspect or the method of the second aspect or the method of the third aspect to be implemented.

In an eighteenth aspect, embodiments of the present application provide a computer program product comprising instructions that, when executed, cause the method of the fourth aspect or the method of the fifth aspect or the method of the sixth aspect or the method of the seventh aspect to be implemented.

For technical effects achieved by the fourth aspect to the eighteenth aspect, please refer to the technical effects achieved by the first aspect, the second aspect, or the third aspect, and repeated description is omitted here.

Drawings

Fig. 1 is a schematic diagram of a communication architecture according to an embodiment of the present application;

fig. 2 is a schematic diagram of a DCI format of a common packet according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of a transmit power control process according to an embodiment of the present application;

fig. 4 is another schematic diagram of a transmission power control process according to an embodiment of the present application;

fig. 5 is a further schematic diagram of a transmit power control process provided in an embodiment of the present application;

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

fig. 7 is another schematic block diagram of a communication device provided by an embodiment of the present application;

fig. 8 is a schematic block diagram of a communication device provided in an embodiment of the present application;

fig. 9 is another schematic block diagram of a communication device provided in an embodiment of the present application.

Detailed Description

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: the method can be applied to communication systems such as LTE, 5th generation (5G), WiFi (wireless fidelity), worldwide interoperability for microwave access (wimax), or future communication systems such as the future 6th generation (6G) system. Among them, 5G may also be referred to as New Radio (NR).

The communication system comprises communication devices, and the communication devices can perform wireless communication by using air interface resources. 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 resource may include at least one of a time domain resource, a frequency domain resource, a code resource, and a spatial resource. In the embodiments of the present application, at least one (one) may be 1 (one), 2 (one), 3 (one), or more (one), and the embodiments of the present application are not limited.

For example, a communication system architecture applied in the embodiment of the present application may be as shown in fig. 1, and include a network device and a plurality of terminal devices, and it should be noted that the number of the terminal devices and the network devices in the communication system shown in fig. 1 is not limited in the embodiment of the present application. The wireless communication between the communication devices may include: wireless communication between a network device and a terminal device, wireless communication between a terminal device and a terminal device, and the like. In the embodiments of the present application, the term "wireless communication" may also be simply referred to as "communication", and the term "communication" may also be described as "data transmission", "information transmission", "signal transmission", or "transmission". The transmission may include sending and/or receiving. For example, the transmission between the network device and the terminal device includes: the network equipment sends a downlink signal to the terminal equipment, namely the terminal equipment receives the downlink signal from the network equipment; and/or the terminal device sends an uplink signal to the network device, that is, the network device receives the uplink signal from the terminal device.

In the embodiment of the present application, communication between a network device and a terminal device is taken as an example for description, and a person skilled in the art may use the technical solution provided in the embodiment of the present application to perform wireless communication between other scheduling entities and subordinate entities, for example, to perform wireless communication between a macro base station and a micro base station, for example, to perform wireless communication between a first terminal device and a second terminal device, which is not limited in the embodiment of the present application.

Before describing the embodiments of the present application, some terms in the embodiments of the present application will be explained to facilitate understanding by those skilled in the art.

1) The terminal device may be a device having a wireless transceiving function, and may also be referred to as a terminal. The terminal equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be a User Equipment (UE), wherein the UE includes a handheld device, a vehicle-mounted device, a wearable device, or a computing device having wireless communication functionality. Illustratively, the UE may be a mobile phone (mobile phone), a tablet computer, or a computer with wireless transceiving function. The terminal device may also be a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in smart grid, a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and so on. In the embodiment of the present application, the apparatus for implementing the function of the terminal device may be the terminal device; it may also be a device, such as a chip system, capable of supporting the terminal device to realize the function, and the device may be installed in the terminal device or used in cooperation with the terminal device. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices. In the embodiment of the present application, a device that implements the function of the terminal device is described as an example of the terminal device.

2) The network device may be a device deployed in a radio access network and capable of wireless communication with a terminal device. The network device may be a Base Station (BS). The base station may have various forms, such as a macro base station, a micro base station, a relay station, an access point, and the like. For example, the base station related to 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 a gNB. In the embodiment of the present application, the apparatus for implementing the function of the network device may be a network device; it may also be a device, such as a chip system, capable of supporting the network device to implement the function, and the device may be installed in the network device or used in cooperation with the network device. In the embodiment of the present application, a device that implements the function of a network device is described as an example of a network device.

3) The uplink power control may also be referred to as uplink transmission power control, and is to allow the network device to receive an uplink signal at an appropriate reception power, where the uplink signal is a signal transmitted by the terminal device through an uplink physical channel. Illustratively, the proper received power means, on the one hand, the received power required when the uplink signal is correctly decoded by the network device, and on the other hand, the uplink transmission power of the uplink signal cannot be unnecessarily high, so as not to cause interference to other uplink transmissions. In order to enable the network device to receive the signal transmitted by the terminal device through the uplink physical channel with an appropriate received power, in the uplink power control, the uplink transmission power when the terminal device transmits the uplink physical channel is mainly controlled. 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 at the receiving end, etc., so that independent power control mechanisms can be introduced for different channels.

Taking uplink power control of a Physical Uplink Shared Channel (PUSCH) as an example, if a terminal device sends a PUSCH to a network device on a bandwidth part (BWP) b of an uplink active part on a carrier f of a serving cell c, uplink transmit power of the PUSCH in a transmission occasion i may be calculated according to the following method:

wherein, P_PUSCH,b,f,c(i,j,q _dL) is the uplink transmit power of the PUSCH in transmission occasion i,

can be regarded as an open loop power control part, f_b,f,c(i, l) can be considered as a closed loop power control portion;

P _CMAX,f,c(i) the maximum transmission power of the PUSCH on the carrier f of the cell c configured for the terminal device, which is sent to the network device on the BWP b of the carrier f of the cell c, may be described as a power class (power class) supported by the terminal device;

P _{O_PUSCH,b,f,c}(j) for the desired (target) received power, the value of the parameter may be indicated or configured by the network device for the terminal device through signaling (e.g., Radio Resource Control (RRC) signaling, system message, or Downlink Control Information (DCI), etc.), and the parameter may include a cell-specific part and a user-specific part; wherein, the network device can configure a plurality of sets of { P } for the terminal device_{O_PUSCH,b,f,c}，α _b,f,cAnd indicates which set of { P } is used by the terminal device through signaling (e.g., DCI, etc.)_{O_PUSCH,b,f,c}，α _b,f,cJ is the set of P used by the terminal equipment indicated by the signaling_{O_PUSCH,b,f,c}，α _b,f,cIndex value of { P } used by the terminal device_{O_PUSCH,b,f,c}，α _b,f,cAt the sets of { P }_{O_PUSCH,b,f,c}，α _b,f,cThe index in (c);

α _b,f,c(j) for part of the path loss compensation factor, range (0, 1)]The value of the parameter may be indicated or configured for the terminal device by the network device through signaling (e.g., RRC signaling, system message, or DCI, etc.);

mu is the subcarrier spacing configuration of the PUSCH, wherein the subcarrier spacing of the PUSCHIs 15kHz (kilohertz) × 2^μWherein, the value of mu can be integers of 0, 1, 2, 4, etc.;

the number of Resource Blocks (RBs) to which the PUSCH is mapped, or the number of RBs used to transmit the PUSCH, and the value of the parameter may be indicated or configured by the network device for the terminal device through signaling (e.g., RRC signaling, or DCI);

PL _b,f,c(q _d) For the estimated value of the path loss, the value of the parameter is used for performing path loss compensation, and the value of the parameter can be obtained by the terminal device through the comparison of a downlink reference signal q_dA path loss estimated by performing downlink measurement;

Δ _TFb,f,c(i) the parameter values related to the modulation mode and the channel coding code rate of the current PUSCH transmission are obtained;

f _b,f,c(i, l) is a power adjustment value determined according to a Transmit Power Control (TPC) command of a closed loop power control (power control) process l, wherein the TPC command may be indicated or configured by the network device for the terminal device through signaling (e.g., RRC signaling, or DCI, etc.). Wherein, the transmission power control command may also be referred to as power control command for short.

Wherein, for closed loop power control, the terminal device side can support more than or equal to 1 closed loop power control process. Such as two closed loop power control procedures may be supported. For example, the closed loop power control process is denoted as l, and the power adjustment value of the closed loop power control process is denoted 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, and the terminal device is used for selecting one of the two closed-loop power control processes supported by the terminal device to determine a power adjustment value. The type of closed loop power control may be an accumulated (accumulated) or absolute (absolute) type.

After receiving TPC command of closed loop power control process l from network equipment, terminal equipment determines f according to the TPC command_b,f,c(i, l), f can be determined by the following cumulative closed loop power control method or absolute closed loop power control method_b,f,c(i,l)：

Cumulative formula:

wherein, delta_PUSCH,b,f,cParameter value (also referred to as TPC command value), f, indicated for a TPC command_b,f,c(i-i ₀L) is the transmission time i-i₀The closed loop power adjustment value of the PUSCH,

indicating transmission occasions i-i₀C (D) received between transmission occasions i_i) Accumulation of power adjustment step lengths indicated by the TPC commands, where the PUSCH at transmission opportunity i may also be understood as the ith transmission of the PUSCH;

absolute formula: f. of_b,f,c(i,l)＝δ _PUSCH,b,f,c(i, l) wherein δ_PUSCH,b,f,cAnd (i, l) is a TPC command value sent to the terminal equipment by the PUSCH with the network equipment as the transmission opportunity i.

For other uplink channels, for example, PUCCH or SRS, the uplink power control process is similar to the PUSCH power control process, and the specific implementation details may be the same or different, and the embodiment of the present application is not limited. For example, uplink power control of PUCCH or SRS includes an open loop power control part and a closed loop power control part. Wherein, the open loop power control part comprises path loss compensation; the power control adjustment value in the closed loop power control portion may be determined from a TPC command, which may be signaled by the network device for the terminal device.

4) And the closed loop power control process comprises the steps that the network equipment sends a TPC command to the terminal equipment, and the terminal equipment determines a power adjustment value according to the TPC command sent by the network equipment. The TPC command may be indicated by a TPC (command) command (field) field in Downlink Control Information (DCI), for example.

The DCI format (format) that can carry the TPC command field includes DCI format0_0, DCI format0_ 1, DCI format 1_0, DCI format 1_1, DCI format2_2, or DCI format2_ 3, and may be specifically classified into two types:

1. DCI format for scheduling PUSCH or Physical Uplink Control Channel (PUCCH):

a) DCI format0_0 or DCI format0_ 1: the DCI is configured to carry transmission parameters of a PUSCH, where the DCI includes a TPC command field, and the size of the TPC command field may be a positive integer (e.g., 2) bits (bit), where the transmission parameters of the PUSCH include one or more of the following parameters: transport Block Size (TBS), modulation scheme, coding rate, Modulation and Coding Scheme (MCS), time domain resource location, frequency domain resource location, Redundancy Version (RV), TPC command, etc.;

b) DCI format 1_0, or DCI format 1_ 1: a transmission parameter for carrying a PUCCH, the DCI including a TPC command field, the TPC command field having a size of a positive integer (e.g., 2) bits (bit), wherein the transmission parameter for the PUCCH includes one or more of the following parameters: TBS, modulation mechanism, coding rate, MCS, time domain resource position, frequency domain resource position, RV, TPC command and the like;

2. DCI format dedicated to transmit a TPC command, where the type of DCI may be transmitted to a group of terminal devices, as shown in fig. 2, the DCI may include one or more blocks (blocks), and each block may carry a TPC command of one terminal device:

a) DCI format2_ 2: a TPC command for transmitting PUCCH/PUSCH, the DCI including one or more TPC fields, each TPC field may be a positive integer (e.g., 2) bits (bits);

b) DCI format2_ 3: a TPC command for transmitting a Sounding Reference Signal (SRS), where the DCI includes one or more TPC fields, and a size of each TPC field may be a positive integer (e.g., 2) bits (bit).

Illustratively, the power adjustment step δ indicated by the TPC command value of the uplink channel (e.g., PUCCH, PUSCH, or SRS) may be as shown with reference to tables 0-1 and 0-2.

Tables 0 to 1

Referring to table 0-1, for the TPC command for DCI format0_0, DCI format0_ 1, DCI format2_2 (indicating PUSCH), and DCI format2_ 3, the cumulative or absolute value corresponding to PUSCH or SRC can be determined based on the TPC command (2-bit value in the TPC command field)

Or

The value of (c).

Tables 0 to 2

Referring to tables 0 to 2, for the TPC command for DCI format 1_0, DCI format 1_1, and DCI format2_2 (indicating PUSCH), the cumulative or absolute value of PUSCH can be determined based on the TPC command (2-bit value in the TPC command field)

The value of (c).

5) Power class of terminal equipment

TABLE 1

Power class	Max TRP(dBm)
1	35
2	23
3	23
4	23

In one possible implementation, as shown in Table 1, several power classes (power classes) are defined, including 35dBm, 23 dBm. In the embodiment of the present application, the power class defines the maximum transmission rate of the terminal device (for example, defines the parameter P in the uplink transmission power of the PUSCH described above_CMAX,f,c(i))。

With the research of large-scale Machine Type Communication (MTC), one or more of the following Machine Type Communication (MTC) terminal devices exist in a communication scenario: video monitoring type terminal equipment, intelligent house, sensor, intelligent wearable equipment and the like. The battery life of MTC type terminal devices is usually required to be weeks or years, so how to reduce the power consumption of MTC type terminal devices is an important research topic.

Based on the service characteristics and power requirements of the MTC type terminal devices, lower power levels, such as 23dBm, 14dBm, 4dBm, etc., may be introduced for the MTC type terminal devices to reduce the maximum transmit power and save power consumption. However, when the maximum transmit power of the terminal device is small, for example 4dBm, the space and gain for the closed loop power control adjustment may be small, and there is a waste of signaling in the system, including TPC commands. From the perspective of the terminal device, the terminal device needs to maintain closed-loop power control all the time, and has high computational complexity, which also causes an increase in power consumption and a waste of processing capability. In order to solve the problems, the embodiment of the application provides a corresponding method and device.

The following describes embodiments of the present application in detail with reference to the drawings. In addition, it should be understood that in the embodiments of the present application, at least one may also be described as one or more, and a plurality may be two, three, four or more, and the present application is not limited thereto.

In the embodiments of the present application, "/" may indicate a relationship in which the objects associated before and after are "or", for example, a/B may indicate a or B; "and/or" may be used to describe that there are three relationships for the associated object, e.g., A and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. For convenience in describing the technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" may be used to distinguish technical features having the same or similar functions. The terms "first," "second," and the like do not necessarily denote any order or importance, nor do the terms "first," "second," and the like denote any order or importance. In the embodiments of the present application, the words "exemplary" or "such as" are used to indicate examples, illustrations or illustrations, and embodiments or designs described as "exemplary" or "such as" are not to be construed as preferred or advantageous over other embodiments or designs. The use of the terms "exemplary" or "such as" are intended to present relevant concepts in a concrete fashion for ease of understanding.

In addition, in the embodiments of the present application, "of", "corresponding" and "corresponding" may be sometimes used in combination, and it should be noted that the intended meaning is consistent when the difference is not emphasized.

In this embodiment of the present application, a terminal device may determine whether the terminal device supports closed-loop power control by receiving signaling (information) sent by a network device, or (or) may determine whether the terminal device supports closed-loop power control according to a predefined threshold value for closed-loop power control or a configuration of the terminal device, and so on, so that when the closed-loop power control is not supported, the terminal device determines uplink transmission power only based on open-loop power control, so as to reduce uplink transmission power, reduce computational complexity for uplink transmission power control, and save processing resources and power consumption, which is described in detail below with reference to a specific embodiment.

[ EXAMPLES one ]

Fig. 3 is a schematic diagram of an uplink transmit power control process provided in an embodiment of the present application, where the process includes:

s301: the network equipment sends indication information to the terminal equipment, and the terminal equipment receives the indication information.

Wherein the indication information is used for indicating whether the terminal equipment supports closed loop power control or not, or the indication information is used for indicating a first threshold value.

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

When initially accessing the network device or after accessing the network device, the terminal device may send (report) capability information of the terminal device, such as information of a power class of the terminal device, to the network device. After receiving the information of the power level sent by the terminal device, the network device may determine whether the terminal device supports closed-loop power control according to the power level of the terminal device and the first threshold, and may send indication information to the terminal device to indicate whether the terminal device supports closed-loop power control. Alternatively, the power class of the terminal device may be carried by an RRC message, or a Media Access Control (MAC) Control Element (CE).

In addition, the power class may also be referred to as an index value of Max TRP, that is, an index value of maximum emissivity, and in one possible implementation, as shown in table 2, an index relationship between index values of several Max TRPs and Max TRP is defined, after the terminal device sends information of the power class to the network device, the network device may query table 2 according to the power class of the terminal device to obtain Max TRP of the terminal device, and determine whether the terminal device supports closed-loop power control according to a comparison result between the Max TRP of the terminal device and the first threshold.

TABLE 2

Power class	Max TRP(dBm)
1	35
2	23
3	14
4	4

As an example, the terminal device sends information of power class "4" to the network device, the network device obtains Max TRP of the terminal device to be 4dBm by looking up table 2 according to the power class "4" of the terminal device, and determines whether the terminal device supports closed-loop power control according to a comparison result between the 4dBm and the first threshold.

In one possible implementation, the indication information may directly indicate whether the terminal device supports closed loop power control. The following are exemplified: the indication information contains a 1-bit flag (flag) for indicating whether the terminal equipment supports closed-loop power control. As an example, when the value of the flag is 0, the terminal device is indicated not to support closed-loop power control, and when the value of the flag is 1, the terminal device is indicated to support closed-loop power control; as another example, when the value of the flag 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, indirectly indicating whether the terminal device supports closed loop power control. And after receiving the indication information, the terminal equipment determines whether the terminal equipment supports closed-loop power control according to a first threshold value indicated by the indication information and the power level of the terminal equipment.

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

Alternatively, if the network device determines that the terminal device supports closed-loop power control, parameter information of the closed-loop power control may be sent to the terminal device, such as a manner (process) for configuring the terminal device to perform closed-loop power control. For example, in the case of PUSCH transmission, the parameter information of closed-loop power control of PUSCH may include a power control accumulation (tpc-accumulation) field/field for indicating the closed-loop power control manner of PUSCH. When tpc-access is configured to a first value (e.g., disabled), the terminal device is instructed to employ absolute closed-loop power control (absolute closed-loop power control procedure), and when tpc-access is not configured to the first value or is configured to a second value, such as tpc-access is configured to enabled, the terminal device is instructed to employ accumulative closed-loop power control (accumulative closed-loop power control procedure). The method may also be used for other uplink channels, such as SRS or PUCCH, and the embodiment of the present application is not limited.

As an example, the network device may send the indication information and parameter information of closed-loop power control to the terminal device, the terminal device determines whether the terminal device supports closed-loop power control according to the indication information, and when the terminal device supports closed-loop power control, the terminal device determines uplink transmit power according to the parameter information of closed-loop power control. As another example, the parameter information of the closed loop power control may be regarded as an example of the indication information. For example, when the terminal device does not receive the parameter information of the closed-loop power control from the network device, the terminal device is considered not to support the closed-loop power control; when receiving the parameter information of the closed-loop power control from the network equipment, the terminal equipment considers that the terminal equipment supports the closed-loop power control, and the terminal equipment determines the uplink transmitting 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 indication information, may be sent after the indication information, or may be sent simultaneously with the indication information, and the embodiment of the present application is not limited thereto.

Optionally, the parameter information of the closed loop power control may also be predefined or preconfigured, e.g. preconfigured using an accumulative closed loop power control or an absolute closed loop power control.

S302: and the terminal equipment determines whether the terminal equipment supports closed-loop power control or not according to the indication information, and performs S303 when the terminal equipment supports closed-loop power control, and performs S304 when the terminal equipment does not support closed-loop power control.

In the embodiment of the application, the terminal device may determine whether to support closed-loop control according to the indication information received from the network device. The indication information is used for indicating that the first threshold value is 4.5dBm, and when the power level of the terminal equipment is greater than or equal to the first threshold value, the terminal equipment supports closed-loop power control; when the power level of the terminal equipment is smaller than a first threshold value, the terminal equipment does not support closed-loop power control, for example, when the power level of the terminal equipment is larger than or equal to 4.5dBm, such as 5dBm, the terminal equipment determines to support closed-loop power control; when the power level of the terminal device is less than 4.5dBm, such as 4dBm, the terminal device determines that closed-loop power control is not supported.

S303: and the terminal equipment determines the uplink transmitting power of the terminal equipment based on open-loop power control and closed-loop power control.

When the terminal device supports closed-loop power control, the network device may send a TPC command to the terminal device, so as to instruct the terminal device to perform closed-loop power control according to the TPC command, that is, the network device may control the terminal device to perform closed-loop power control by sending the TPC command to the terminal device. Taking PUSCH as an example, the network device may determine the TPC command according to one or more of the resource allocation of PUSCH, the modulation and coding scheme of PUSCH, the received power (RSRP) of the demodulation reference signal of PUSCH transmitted before, the signal to interference plus noise ratio (SINR) of the demodulation reference signal, and the SINR of PUSCH transmitted before, which is not limited in the embodiments of the present application. As an example, when the terminal device supports closed-loop power control, the network device may send the TPC command to the terminal device through DCI, that is, the DCI is used to indicate the TPC command, and of course, the network device may also send the TPC command to the terminal device through other information, which is not limited in this embodiment of the present application.

Optionally, taking PUSCH as an example, a DCI format (format) of DCI carrying the TPC command may be DCI format0_0 or DCI format0_ 1. The DCI is assumed to be sent by the network device to the first terminal device, and the DCI is used for indicating the TPC command of the first terminal device and is not used for indicating the TPC command of other terminal devices. Optionally, when the DCI format of the DCI that may carry the TPC command (command) is DCI format0_0 or 0_1, the DCI may be further configured to indicate transmission parameters of the PUSCH, such as a TBS, a time domain resource location, a frequency domain resource location, and an MCS. Wherein the transmission parameter of the PUSCH transmitted through the DCI may also be referred to as scheduling information of the PUSCH.

Alternatively, the network device may notify the terminal device of the TPC command of the PUSCH through a DCI format scrambled by a TPC-PUSCH-Radio Network Temporary Identifier (RNTI), for example, the DCI format2_ 2. DCI format2_2 is a DCI format of a user common packet, and referring to fig. 2, a DCI of each DCI format2_2 may simultaneously indicate TPC commands of a plurality of terminal devices, the TPC command of each terminal device is indicated by using different bits in the DCI, and the plurality of terminal devices simultaneously detect the same DCI and resolve their TPC commands on the specified bits. The specified 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. The DCI format may be applicable to a mode in which a network device configures transmission parameters or scheduling information of a PUSCH, where the mode includes that the network device configures the transmission parameters of the PUSCH (e.g., TBS, MCS, Redundancy (RV), time domain resource location, frequency domain resource location, etc.) to a terminal device through a higher layer signaling (e.g., RRC, MAC CE, or system message) or DCI, and PUSCH transmission of the terminal device may be performed according to the scheduling information, and at this time, the network device does not need to issue the DCI for scheduling the PUSCH, so the network device may issue a TPC command of the PUSCH of the terminal device through a TPC-PUSCH-RNTI scrambled DCI format (e.g., DCI format2_ 2).

The network device may be based on open loop control when performing PUSCH transmission after receiving a TPC command to schedule PUSCHAnd determining the uplink transmission power of the PUSCH according to the strategy and the closed-loop power control strategy. Such as according to

And determining the uplink transmission power transmitted on the PUSCH this time. The parameters in the formula may refer to the corresponding descriptions above, and are not described herein again.

S304: and the terminal equipment determines the uplink transmitting power of the terminal equipment based on open loop power control.

Optionally, taking PUSCH as an example, when the terminal device does not support closed-loop power control, and when the network device schedules the terminal device to perform PUSCH transmission, it is not necessary to send a TPC command to the terminal device, for example: when the terminal device does not support closed-loop power control, the time domain resource position, the frequency domain resource position, the MCS, and/or other transmission parameters of the PUSCH may be carried in DCI without indicating the TPC command of the PUSCH through DCI.

When the terminal equipment determines the transmission power of the PUSCH transmission during the PUSCH transmission, the terminal equipment can determine the uplink transmission power of the PUSCH transmission based on the open-loop power control without calculating the closed-loop power adjustment amount. Such as according to

In this embodiment, the above method that does not need to indicate a TPC command through DCI includes deleting or re-interpreting a TPC command field used for indicating a TPC command in DCI, where deleting means that the TPC command field is no longer carried (included) in DCI, and re-interpreting means that the TPC command field is still carried in DCI, but the TPC command field is ignored, padded to a specific value (e.g. 0 or 1), or no longer interpreted as a TPC command, for example, may be interpreted as other instruction information. When the DCI does not carry the TPC command field any more, the total bit length of the DCI can be reduced, and when the same resource is used for transmission, the code rate for coding the DCI channel 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 bits in the DCI is improved.

It should be understood that, besides PUSCH, the uplink transmit power control provided in the embodiments of the present application is also applicable to PUCCH, and/or SRS, etc., when the network device indicates, through the indication information, that PUCCH, and/or SRS, etc. transmission of the terminal device does not support closed-loop power control, the network device may not send the TPC command of PUCCH, and/or SRS to the terminal device, and when the terminal device performs uplink transmit power control, the terminal device does not calculate the power adjustment amount of the closed-loop power control portion of PUCCH, and/or SRS, and accordingly, the TPC field in DCI used for power control adjustment of PUCCH, and/or SRS may also be deleted or re-interpreted.

[ EXAMPLE II ]

Fig. 4 is a schematic diagram of an uplink transmit power control process provided in an embodiment of the present application, where the process includes:

s401: the terminal equipment determines whether the terminal equipment supports closed-loop power control or not according to the power grade of the terminal equipment and a second threshold value, and performs S402 when the terminal equipment supports closed-loop power control, and performs S403 when the terminal equipment does not support closed-loop power control.

Wherein the second threshold value is predefined or may be described as preconfigured.

S402: and the terminal equipment determines the uplink transmitting power of the terminal equipment based on open-loop power control and closed-loop power control.

S403: and the terminal equipment determines the uplink transmitting power of the terminal equipment based on open loop power control.

In an embodiment of the present application, the second threshold for determining whether the terminal device supports closed loop power control may be predefined, such as 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 equipment is smaller than the second threshold value, the terminal equipment 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 value, the terminal device does not support closed-loop power control. In addition, the first threshold may be 4dBm, 4.5dBm, 5dBm, or other real numbers, which is not limited in the embodiments of the present application. The second threshold may be the same as or different from the first threshold, and this is not limited in this embodiment of the application.

The terminal device may determine whether the terminal device supports closed-loop power control according to its own power class and the second threshold. The terminal device may send (report) capability information of the terminal device, such as reporting a power class of the terminal device, to the network device. The reporting method can refer to the description in the first embodiment, and is not described herein again. The network device may also determine whether the terminal device supports closed-loop power control according to the terminal device transmitted power level and the second threshold.

In a possible implementation, the network device may send parameter information of closed-loop power control to the terminal device, for details, please refer to the description in the first embodiment, which is not described herein again. Optionally, the parameter information of the closed loop power control may also be predefined or preconfigured, e.g. preconfigured using an accumulative closed loop power control or an absolute closed loop power control.

When the terminal device supports closed-loop power control, the network device may send a TPC command to the terminal device, for instructing 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 TPC commands to the terminal device. For details, please refer to the description in the first embodiment, which is not repeated herein.

In this embodiment of the present application, when the terminal device supports or does not support closed-loop power control, the implementation of determining the uplink transmission power by the terminal device may refer to the description in the first embodiment, and repeated details are not repeated.

[ EXAMPLE III ]

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

s501: the terminal device sends second indication information to a network device, the network device receives the second indication information, and when the terminal device supports closed-loop power control, the step S502 is performed, and when the terminal device does not support closed-loop power control, the step S503 is performed.

Wherein the second indication information is used for indicating whether the terminal equipment supports closed loop power control.

S502: and the terminal equipment determines the uplink transmitting power of the terminal equipment based on the open-loop power control and the closed-loop power control.

S503: and the terminal equipment determines the uplink transmitting power of the terminal equipment based on open loop power control.

In this embodiment, the terminal device may determine whether the closed-loop power control is supported according to capability information of whether the terminal device itself supports the closed-loop power control, configuration of the terminal device, and the like, and may send second indication information to the network device to indicate whether the terminal device supports the closed-loop power control.

In a possible implementation, the network device may send parameter information of closed-loop power control to the terminal device, for details, please refer to the description in the first embodiment, which is not described herein again. Optionally, the parameter information of the closed loop power control may also be predefined or preconfigured, for example, the preconfiguration uses an accumulative closed loop power control or an absolute closed loop power control.

In the embodiments provided in the present application, the method provided in the embodiments of the present application is introduced from the perspective of a network device, a terminal device, and interaction between the network device and the terminal device. In order to implement the functions in the method provided by the embodiments of the present application, the network device and the terminal device may include a hardware structure and/or a software module, and the functions are implemented in the form of a hardware structure, a software module, or a hardware structure and a software module. Whether any of the above-described functions is implemented as a hardware structure, a software module, or a hardware structure plus a software module depends upon the particular application and design constraints imposed on the technical solution.

Fig. 6 shows a possible exemplary block diagram of a communication device involved in the embodiments of the present application in the case of integrated units (modules), where the device 600 may exist in the form of software, hardware, or software plus hardware, and the embodiments of the present application are not limited. The apparatus 600 may comprise: a processing unit 602 and a transceiving unit 603.

In one possible design, processing unit 602 is configured to perform the corresponding processing functions. The transceiving unit 603 is configured to support communication of the apparatus 600 with other network entities. Optionally, the transceiving unit 603 may comprise a receiving unit and/or a transmitting unit for performing receiving and transmitting operations, respectively. Optionally, the apparatus 600 may further comprise a storage unit 601 for storing program codes and/or data of the apparatus 600.

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

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

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

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

In one possible design, the indication information is used to indicate a first threshold value; the processing unit 602, according to the indication information, determines whether the terminal device supports closed-loop power control, specifically, when the power level of the terminal device is greater than or equal to the first threshold, determines that the terminal device supports closed-loop power control; and when the power level of the terminal equipment is smaller than the first threshold value, determining that the terminal equipment does not support closed-loop power control.

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

In one possible design, the transceiving 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 performed according to the TPC command.

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

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

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

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

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

In yet another possible embodiment, the transceiver 603 is configured to send 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;

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

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

The division of the modules in the embodiments of the present application is schematic, and only one logical function division is provided, and in actual implementation, there may be another division manner, and in addition, each functional module in each embodiment of the present application may be integrated in one module or one processor, or may exist alone physically, or two or more modules are integrated in one module. The integrated module may be implemented in a form of hardware, may also be implemented in a form of a software functional module, or may be implemented in a form of hardware and software, and the embodiment of the present application is not limited. For example: the processing unit 602 may be implemented by a processor, the transceiver 603 may be implemented by a transceiver or a communication interface, and the storage unit 601 may be implemented by a memory.

As shown in fig. 7, an embodiment of the present application further provides a communication apparatus 700, which is used to implement the functions of the terminal device in the foregoing embodiments. The communication device 700 includes a processor 710 and a communication interface 730. The communication device 700 may also include a memory 720. In this embodiment of the present application, the communication interface may be a transceiver, a bus interface, a pin, or other devices, circuits, or devices that can implement a communication function, and the embodiment of the present application is not limited. In fig. 7, communication interface 730 is illustratively shown as transceiver 730.

In a possible design, the processor 710 may implement the functions of the processing unit 602 in the above embodiments, and the communication interface 730 may implement the functions of the transceiver 603 in the above embodiments.

In one 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 above embodiments. The processor 710 is used 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 above embodiments, and the transceiver 730 is configured to perform the operations performed by the transceiver 603 in the above embodiments.

It should be understood that the communication apparatus 600 or 700 in the embodiment of the present application may correspond to a terminal device in the communication method (fig. 3, or fig. 4, or fig. 5) in the embodiment of the present application, and operations and/or functions of respective modules in the communication apparatus 600 or 700 are not described herein again for brevity in order to implement the corresponding flows of the respective methods in fig. 3, or fig. 4, or fig. 5, respectively. The communication apparatus 600 or 700 may be a terminal device, or may be other apparatuses capable of implementing the functions of the terminal device, such as a system-on-chip. The other device can be installed in the terminal equipment or matched with the terminal equipment for use.

As another form of the present embodiment, there is provided a computer-readable storage medium having stored thereon instructions that, when executed, may perform the method on the terminal device side in the above-described method embodiments.

As another form of the present embodiment, there is provided a computer program product containing instructions that, when executed, can perform the method on the terminal device side in the above method embodiments.

As another form of this embodiment, a chip is provided, where the chip includes a processor, and is used to execute the method on the terminal device side in the above method embodiments. The chip may further include a memory, the processor is coupled to the memory, and the processor is configured to execute a program or an instruction stored in the memory, and when the program or the instruction is executed, the processor may perform the method on the terminal device side in the foregoing method embodiment.

Fig. 8 shows a possible exemplary block diagram of another communication device involved in the embodiments of the present application in the case of an integrated unit (module), where the communication device 800 may exist in the form of software, hardware, or software plus hardware, and the embodiments of the present application are not limited. The apparatus 800 may include: a processing unit 802 and a transceiving unit 803.

In one possible design, the processing unit 802 is configured to implement corresponding processing functions. The transceiving unit 803 is used to support the communication of the apparatus 800 with other network entities. Optionally, the transceiving unit 803 may comprise a receiving unit and/or a transmitting unit for performing receiving and transmitting operations, respectively. Optionally, the apparatus 800 may further comprise a storage unit 801 for storing program codes and/or data of the apparatus 800.

The apparatus 800 may be used to implement the functions of the network device in any of the embodiments described above. The processing unit 802 may enable the apparatus 800 to perform the actions of the network device in the above method examples. Alternatively, the processing unit 802 mainly performs the internal actions of the network device in the method example, and the transceiving unit 803 may support the communication between the apparatus 800 and the terminal device.

In an embodiment, the transceiver 803 is configured to send, to the terminal device, indication information, where 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 one 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, where the DCI is used to indicate a TPC command when the terminal device supports closed-loop power control.

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

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

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

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

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

In a possible design, the transceiver unit 803 is further configured to receive information about a power class of the terminal device from the terminal device; the processing unit 802 is configured to determine whether the terminal device supports closed loop power control according to the power class of the terminal device and a second threshold, where the second threshold is predefined.

In yet 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.

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 one possible design, the transceiver unit 803 is further configured to transmit DCI to the terminal device, where the DCI is not used to indicate the TPC command when the terminal device does not support closed-loop power control.

The division of the modules in the embodiments of the present application is schematic, and is only a logical function division, and in actual implementation, there may be another division manner, and in addition, each functional module in each embodiment of the present application may be integrated in one module or one processor, or may exist alone physically, or two or more modules are integrated in one module. The integrated module may be implemented in a form of hardware, may also be implemented in a form of a software functional module, or may be implemented in a form of hardware and software, and the embodiment of the present application is not limited. For example: the processing unit 802 may be implemented by a processor, the transceiver unit 803 may be implemented by a transceiver or a communication interface, and the storage unit 801 may be implemented by a memory.

As shown in fig. 9, an embodiment of the present application further provides a communication apparatus 900, which is used to implement the functions of the network device in the foregoing embodiments. The communication device 900 includes a processor 910 and a communication interface 930. The communication device 900 may also include a memory 920. In this embodiment of the present application, the communication interface may be a transceiver, a bus interface, a pin, or other devices, circuits, or devices that can implement a communication function, and the embodiment of the present application is not limited. In fig. 9, the communication interface 930 is illustrated as a transceiver 930.

In a possible design, the processor 910 may implement the functions of the processing unit 802 in the above embodiments, and the communication interface 930 may implement the functions of the transceiving unit 803 in the above embodiments.

In one 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 above embodiments. The processor 910 is used 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 above embodiments, and the transceiver 930 is configured to perform the operations performed by the transceiver unit 803 in the above embodiments.

It should be understood that the communication apparatus 800 or 900 according to the embodiment of the present application may correspond to a network device in the communication method (fig. 3, or fig. 4, or fig. 5) according to the embodiment of the present application, and operations and/or functions of respective modules in the communication apparatus 800 or 900 are not repeated herein for brevity in order to implement the corresponding flows of the respective methods in fig. 3, or fig. 4, or fig. 5, respectively. The communication apparatus 800 or 900 may be a network device, or may be other apparatuses capable of implementing functions of a network device, such as a system on chip. The other device can be installed in the network equipment or matched with the network equipment for use.

As another form of the present embodiment, a computer-readable storage medium is provided, on which instructions are stored, and when executed, the instructions may perform the method on the network device side in the above method embodiment.

As another form of the present embodiment, there is provided a computer program product containing instructions, which when executed can perform the method on the network device side in the above method embodiments.

As another form of this embodiment, a chip is provided, where the chip includes a processor, and is configured to execute the method on the network device side in the foregoing method embodiment. The chip may further include a memory, the processor is coupled to the memory, and the processor is configured to execute a program or an instruction stored in the memory, and when the program or the instruction is executed, the processor may perform the method on the network device side in the above 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, and may implement or execute the methods, steps, and logic blocks 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 a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.

In the embodiment of the present application, the memory may be a nonvolatile memory, such as a Hard Disk Drive (HDD) or a solid-state drive (SSD), and may also be a volatile memory, for example, a random-access memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory in the embodiments of the present application may also be circuitry or any other device capable of performing a storage function for storing program instructions and/or data.

The technical solutions provided in the embodiments of the present application may be wholly or partially implemented by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network appliance, a terminal device or other programmable apparatus. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium, among others.

In the embodiments of the present application, the embodiments may refer to each other, for example, methods and/or terms between the embodiments of the method may refer to each other, for example, functions and/or terms between the embodiments of the apparatus and the embodiments of the method may refer to each other, without logical contradiction.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

An uplink transmission power control method, comprising:

receiving indication information from a network device;

determining whether the terminal equipment supports closed loop power control or not according to the indication information;

when the terminal equipment does not support closed-loop power control, determining the uplink transmitting power of the terminal equipment based on open-loop power control;

and when the terminal equipment supports closed-loop power control, determining the uplink transmitting power of the terminal equipment based on the open-loop power control and the closed-loop power control.
The method of claim 1, wherein the indication information indicates whether the terminal device supports closed loop power control.
The method of claim 1, wherein the indication information is used to indicate a first threshold value; the determining whether the terminal device supports closed loop power control according to the indication information includes:

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

and when the power level of the terminal equipment is smaller than the first threshold value, the terminal equipment does not support closed-loop power control.
The method of any one of claims 1-3, further comprising:

and sending the information of the power grade of the terminal equipment to the network equipment.
An uplink transmission power control method, comprising:

determining whether a terminal device supports closed loop power control based on a power class of the terminal device and a second threshold, wherein the second threshold is predefined;

when the terminal equipment does not support closed-loop power control, determining the uplink transmitting power of the terminal equipment based on open-loop power control;

and when the terminal equipment supports closed-loop power control, determining the uplink transmitting power of the terminal equipment based on the open-loop power control and the closed-loop power control.
The method of claim 5, wherein determining whether the terminal device supports closed loop power control based on the terminal device's power class and a second threshold value comprises:

when the power grade of the terminal equipment is greater than or equal to the second threshold value, the terminal equipment supports closed-loop power control;

and when the power level of the terminal equipment is smaller than the second threshold value, the terminal equipment does not support closed-loop power control.
The method of claim 5 or 6, further comprising:

and sending the information of the power level of the terminal equipment to network equipment.
An uplink transmission power control method, comprising:

sending second indication information to network equipment, wherein the second indication information is used for indicating whether the terminal equipment supports closed-loop power control or not;

when the terminal equipment does not support closed-loop power control, determining the uplink transmitting power of the terminal equipment based on open-loop power control;

and when the terminal equipment supports closed-loop power control, determining the uplink transmitting power of the terminal equipment based on the open-loop power control and the closed-loop power control.
The method of any one of claims 1-8, further comprising:

receiving a transmit power control, TPC, command from a network device when the terminal device supports closed loop power control, wherein the closed loop power control is performed in accordance with the TPC command.
The method of any one of claims 1-8, further comprising:

receiving Downlink Control Information (DCI) from a network device, wherein the DCI is used for indicating a TPC command when the terminal device supports closed-loop power control, and the closed-loop power control is executed according to the TPC command.
The method of any one of claims 1-10, further comprising:

receiving DCI from a network device, the DCI not being used to indicate the TPC command when the terminal device does not support closed loop power control.
An uplink transmission power control method, comprising:

and sending indication information to the terminal equipment, wherein the indication information is used for indicating whether the terminal equipment supports closed loop power control or not, or the indication information is used for indicating a first threshold value.
The method of claim 12, wherein the method further comprises:

and when the terminal equipment supports closed loop power control, sending a Transmit Power Control (TPC) command to the terminal equipment.
The method of claim 12, wherein the method further comprises:

and sending Downlink Control Information (DCI) to the terminal equipment, wherein the DCI is used for indicating a TPC command when the terminal equipment supports closed loop power control.
The method of any one of claims 12-14, further comprising:

and sending DCI to the terminal equipment, wherein when the terminal equipment does not support closed-loop power control, the DCI is not used for indicating the TPC command.
The method of any one of claims 12-15, further comprising:

receiving information of a power class of the terminal device from the terminal device.
An uplink transmission power control method, comprising:

and when the terminal equipment supports closed-loop power control, sending a Transmit Power Control (TPC) command to the terminal equipment.
An uplink transmission power control method, comprising:

and sending Downlink Control Information (DCI) to the terminal equipment, wherein when the terminal equipment supports closed loop power control, the DCI is used for indicating a Transmission Power Control (TPC) command.
An uplink transmission power control method, comprising:

and sending downlink control information DCI to the terminal equipment, wherein when the terminal equipment does not support closed-loop power control, the DCI is not used for indicating a Transmission Power Control (TPC) command.
The method of any one of claims 17-19, further comprising:

receiving information of a power class of the terminal device from the terminal device.
An uplink transmission power control method, comprising:

and receiving second indication information from the terminal equipment, wherein the second indication information is used for indicating whether the terminal equipment supports closed loop power control.
The method of claim 21, wherein the method further comprises:

and when the terminal equipment supports closed loop power control, sending a Transmit Power Control (TPC) command to the terminal equipment.
The method of claim 21, wherein the method further comprises:

and sending Downlink Control Information (DCI) to the terminal equipment, wherein the DCI is used for indicating a TPC command when the terminal equipment supports closed loop power control.
The method of claim 21 or 23, wherein the method further comprises:

and sending DCI to the terminal equipment, wherein the DCI is not used for indicating the TPC command when the terminal equipment does not support closed-loop power control.
A communication device, characterized in that it is adapted to implement the method according to any of claims 1-11.
A communications device comprising a processor and a memory, the memory coupled to the processor, the processor configured to perform the method of any of claims 1-11.
A communication device comprising a processor and a communication interface,

the processor receiving indication information from a network device using the communication interface;

the processor is used for determining whether the terminal equipment supports closed loop power control or not according to the indication information;

when the terminal equipment does not support closed-loop power control, the processor is used for determining the uplink transmitting power of the terminal equipment based on open-loop power control;

and when the terminal equipment supports closed-loop power control, the processor is used for determining the uplink transmitting power of the terminal equipment based on the open-loop power control and the closed-loop power control.
A communications apparatus, comprising a processor configured to:

determining whether a terminal device supports closed loop power control based on a power class of the terminal device and a second threshold, wherein the second threshold is predefined;

when the terminal equipment does not support closed-loop power control, determining the uplink transmitting power of the terminal equipment based on open-loop power control;

and when the terminal equipment supports closed-loop power control, determining the uplink transmitting power of the terminal equipment based on the open-loop power control and the closed-loop power control.
A communication device comprising a processor and a communication interface,

the processor sends second indication information to a network device by using the communication interface, wherein the second indication information is used for indicating whether the terminal device supports closed loop power control or not;

when the terminal equipment does not support closed-loop power control, the processor is used for determining the uplink transmitting power of the terminal equipment based on open-loop power control;

and when the terminal equipment supports closed-loop power control, the processor is used for determining the uplink transmitting power of the terminal equipment based on the open-loop power control and the closed-loop power control.
A communication device for implementing the method of any one of claims 12-24.
A communications device comprising a processor and a memory, the memory coupled to the processor, the processor configured to perform the method of any of claims 12-24.
A communication device comprising a processor and a communication interface,

and the processor sends indication information to the terminal equipment by using the communication interface, wherein the indication information is used for indicating whether the terminal equipment supports closed loop power control or not, or the indication information is used for indicating a first threshold value.
A communication device comprising a processor and a communication interface,

the processor receives second indication information from the terminal device by using the communication interface, wherein the second indication information is used for indicating whether the terminal device supports closed loop power control.
A communication system comprising a communication device according to any of claims 25 to 29 and a communication device according to any of claims 30 to 33.
A computer-readable storage medium, having stored thereon a computer program or instructions, which, when executed by one or more processors, carry out the method of any one of claims 1-24.
A computer program product, characterized in that the computer program product comprises a computer program or instructions which, when executed by one or more processors, implements the method according to any one of claims 1-24.