CN114747260B

CN114747260B - Uplink transmitting power control method and device

Info

Publication number: CN114747260B
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: 2023-11-10
Anticipated expiration: 2039-12-17
Also published as: WO2021120022A1; CN114747260A

Abstract

The embodiment of the application relates to the technical field of communication, and discloses a method and a device for controlling uplink transmission power, 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 smaller, reducing the calculation complexity of the uplink transmission power control of the terminal equipment, further saving processing resources and reducing power consumption. 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 according to the indication information; when the terminal equipment does not support closed loop power control, the terminal equipment determines 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 uplink transmitting power of the terminal equipment based on open-loop power control and closed-loop power control.

Description

Uplink transmitting 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 demands, terminal devices in a communication scene gradually exhibit a large number of characteristics, 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 factory building; in home and living scenarios, there are a large number of cell phones, tablets, wearable devices, smart home appliances, or vehicle-mounted terminal devices, etc.

Disclosure of Invention

The embodiment of the application provides an uplink transmitting 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 according to the indication information; when the terminal equipment does not support closed loop power control, determining uplink transmitting power of the terminal equipment based on open loop power control; and when the terminal equipment supports closed-loop power control, determining 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 application, the described uplink transmitting power control method can be realized by the terminal equipment or by the components of the terminal equipment, such as the processing chip, the circuit and the like in the terminal equipment. 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 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 is not needed to be considered, so that the calculation complexity of the uplink transmitting power control of the terminal equipment is reduced, and the processing resources of the terminal equipment are saved and the power consumption of the terminal equipment is reduced.

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 or not, 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 equipment supports closed loop power control according to the indication information comprises the following steps: 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 the first threshold value, the terminal equipment does not support closed loop power control. In this design, the network device may broadcast a notification to one or more terminal devices within a cell or within a group of terminal devices whether closed loop power control is supported, which is beneficial to saving signaling resources.

In one possible design, the method further comprises: and sending the information of the power level of the terminal equipment to the network equipment. In the design, the terminal equipment sends the information of the power class of the terminal equipment to the network equipment, which is favorable for the network equipment to know the power class of the terminal equipment, and is convenient for the network equipment to accurately judge whether the terminal equipment supports closed-loop power control according to the power class of the terminal equipment.

In one possible design, the method further comprises: transmit power control, TPC, commands are received 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 commands. 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 is beneficial to performing closed-loop power control according to the TPC command received from the network equipment, and accurately determining uplink transmitting power, thereby ensuring that the network equipment receives signals (information) transmitted by the terminal equipment with proper receiving power.

In one possible design, the method further comprises: downlink control information, DCI, is received from a network device, the DCI being used to indicate TPC commands when the terminal device supports closed loop power control, wherein the closed loop power control is performed in accordance with the TPC commands. In the design, when the terminal equipment supports closed-loop power control, the terminal equipment receives the DCI from the network equipment, and obtains the TPC command indicated by the DCI, so that the terminal equipment is favorable for timely receiving the TPC command from the network equipment according to dynamic signaling, performing closed-loop power control, accurately determining uplink transmitting power, and further ensuring that the network equipment receives signals (information) transmitted by the terminal equipment with proper receiving power.

In one possible design, the method further comprises: 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 the design, when the terminal equipment does not support closed loop power control, the DCI sent by the network equipment does not indicate TPC command, and the TPC command domain used for indicating TPC command in the DCI can be deleted or re-interpreted as other domains for transmitting other information, thereby being 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 the terminal device supports closed loop power control based on a power class of the terminal device and a second threshold value, wherein the second threshold value is predefined; when the terminal equipment does not support closed loop power control, determining uplink transmitting power of the terminal equipment based on open loop power control; and when the terminal equipment supports closed-loop power control, determining 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 application, the described uplink transmitting power control method can be realized by the terminal equipment or by the components of the terminal equipment, such as the processing chip, the circuit and the like in the terminal equipment. By adopting the method, the terminal equipment determines whether to support closed loop power control according to the power level of the terminal equipment and the predefined second threshold value, and determines 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 is not needed to be considered, so that the calculation complexity of the uplink transmitting power control of the terminal equipment is reduced, and the processing resources of the terminal equipment are saved and the power consumption of the terminal equipment is reduced.

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

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

In one possible design, the method further comprises: the TPC commands are received from the network device when the terminal device supports closed loop power control, wherein the closed loop power control is performed in accordance with the TPC commands.

In one possible design, the method further comprises: downlink control information, DCI, is received from a network device, the DCI being used to indicate TPC commands when the terminal device supports closed loop power control, wherein the closed loop power control is performed in accordance with the TPC commands.

In one possible design, the method further comprises: 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 may be referred to the technical effects achieved by the first aspect, and the description thereof will not be repeated here.

In a third aspect, an embodiment of the present application provides a method for controlling uplink transmit power, where the method includes: transmitting 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 uplink transmitting power of the terminal equipment based on open loop power control; and when the terminal equipment supports closed-loop power control, determining 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 application, the described uplink transmitting power control method can be realized by the terminal equipment or by the components of the terminal equipment, such as the processing chip, the circuit and the like in the terminal equipment. By adopting the method, the terminal equipment can send the second indication information for indicating whether the terminal equipment supports the closed-loop power control to the network equipment according to whether the terminal equipment has the capability of supporting the closed-loop power control or not, so that the network equipment can conveniently know whether the terminal equipment supports the closed-loop power control or not, and when the terminal equipment does not support the closed-loop power control, the terminal equipment determines the uplink transmission power based on the open-loop power control, the closed-loop power control part is not needed to be considered, and the calculation complexity of the uplink transmission power control of the terminal equipment is reduced, thereby saving the processing resources of the terminal equipment and reducing the power consumption of the terminal equipment.

The technical effects achieved by any one of the possible designs of the third aspect may be referred to the technical effects achieved by the first aspect, and the description thereof will not be repeated here.

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 the embodiment of the application, the described uplink transmitting power control method can be realized by the network equipment, and also can be realized by the components of the network equipment, such as the processing chip, the circuit and the like in the network equipment.

In one possible design, the method further comprises: and when the terminal equipment supports closed-loop power control, sending TPC commands to the terminal equipment.

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

In one possible design, 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.

In one possible design, the method further comprises: information of a power class of the terminal device is received 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, sending TPC commands 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 the 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: second indication information is received from the terminal device, wherein the second indication information is used for indicating whether the terminal device supports closed loop power control.

In an eighth aspect, an embodiment of the present application provides a communications device, where the communications device has a function of implementing the method described in the first aspect or the method described in the second aspect or the method described in the third aspect, where the function may be implemented by hardware, or may be implemented by software, or implemented by executing corresponding software by hardware. 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, where the memory is configured to store a program or an instruction executed by the processor, and when the program or the instruction is executed by the processor, the apparatus may 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 one possible design, the apparatus may be a terminal device.

In a ninth aspect, an embodiment of the present application provides a communications device, where the communications device has a function of implementing the method described in the fourth aspect or the method described in the fifth aspect or the method described in the sixth aspect or the method described in the seventh aspect, where the function may be implemented by hardware, or may be implemented by software, or may be implemented by executing corresponding software by hardware. 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, where the memory is configured to store a program or an instruction executed by the processor, and when the program or the instruction is executed by the processor, the apparatus may 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 one possible design, the apparatus may be a network device.

In a tenth aspect, embodiments of the present application provide a system, including the communication device of the eighth aspect, and the communication device of the ninth aspect.

In an eleventh aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus includes a processor, a memory, and a communication interface, where the communication interface is configured to receive a signal or send a signal; the memory is used for storing programs or instruction codes; the processor is configured to invoke the program or the 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, where the communication apparatus includes a processor, a memory, and a communication interface, where the communication interface is configured to receive a signal or send a signal; the memory is used for storing programs or instruction codes; the processor is configured to invoke the program or the 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 including a processor and interface circuitry for receiving program or instruction code and transmitting to the processor; the processor runs the program or instruction code 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 fourteenth aspect, an embodiment of the present application provides a communication apparatus including a processor and interface circuitry for receiving program or instruction code and transmitting to the processor; the processor runs 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, embodiments of the present application provide a computer-readable storage medium 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, an embodiment of the present application provides a computer-readable storage medium storing a program or instructions that, when executed, cause a method according to the fourth aspect or a method according to the fifth aspect or a method according to the sixth aspect or a method according to the seventh aspect to be implemented.

In a seventeenth aspect, embodiments of the present application provide a computer program product comprising 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.

An eighteenth aspect, an embodiment of the application provides a computer program product comprising 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.

The technical effects achieved by the fourth to eighteenth aspects are referred to the technical effects achieved by the first, second or third aspects, and the detailed description is omitted herein.

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 application;

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 transmit power control process according to an embodiment of the present application;

fig. 5 is a schematic diagram of a transmit power control process according to 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 by an embodiment of the present application;

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

Detailed Description

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: the method can be applied to communication systems such as LTE, fifth generation (5th generation,5G) and the like, wireless fidelity (wireless fidelity, wiFi), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wmax) or future communication systems such as a sixth generation (6th generation,6G) system and the like. Wherein 5G may also be referred to as New Radio (NR).

In a communication system including communication devices, wireless communication can be performed between the communication devices 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 resources may include at least one of time domain resources, frequency domain resources, code resources, and space resources. In the embodiment of the present application, at least one (a) may be 1 (a), 2 (a), 3 (a) or more (a), and the embodiment of the present application is not limited.

As shown in fig. 1, the architecture of the communication system to which the embodiment of the present application is applied may include a network device and a plurality of terminal devices, and it should be noted that the number of the terminal devices and the number of the network devices in the communication system shown in fig. 1 are 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 transmission and/or reception. 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 the uplink signal to the network device, i.e. the network device receives the uplink signal from the terminal device.

In the embodiment of the present application, the communication between the network device and the terminal device is described as an example, and those 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 the first terminal device and the second terminal device, which is not limited by the embodiment of the present application.

Before describing embodiments of the present application, some of the words in the embodiments of the present application are explained first to facilitate understanding by those skilled in the art.

1) The terminal device may be a device having a wireless transmitting/receiving function, and may also be referred to as a terminal. The terminal device may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.). The terminal device may be a User Equipment (UE), wherein the UE includes a handheld device, an in-vehicle device, a wearable device, or a computing device with wireless communication capabilities. The UE may be a mobile phone (mobile phone), a tablet computer, or a computer with a wireless transceiver function, for example. The terminal device may also be a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned, a wireless terminal in telemedicine, a wireless terminal in smart grid, a wireless terminal in smart city, a wireless terminal in smart home, etc. In the embodiment of the present application, the device for implementing the function of the terminal device may be the terminal device; or a device, such as a chip system, capable of supporting the terminal device to implement the function, which may be installed in the terminal device or used in cooperation with the terminal device. In the embodiment of the application, the chip system can be composed of chips, and can also comprise chips and other discrete devices. In the embodiment of the present application, the device for implementing the function of the terminal device is described by taking the terminal device as an example.

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). Among them, the base station may have various forms such as macro base station, micro base station, relay station, access point, etc. Illustratively, the base station involved in the embodiment of the present application may be a base station in 5G or a base station in LTE, where the base station in 5G may also be referred to as a transmission receiving point (transmission reception point, TRP) or gNB. In the embodiment of the present application, the device for implementing the function of the network device may be a network device; or may be a device, such as a system-on-a-chip, capable of supporting the network device to perform this function, which may be installed in or used in conjunction with the network device. In the embodiment of the present application, a description may be given by taking a network device as an example of a device that implements a function of the network device.

3) The uplink power control, which may also be referred to as uplink transmit power control, is to enable the network device to receive an uplink signal at a suitable receive power, where the uplink signal is a signal transmitted by the terminal device through an uplink physical channel. By way of example, suitable reception power means, on the one hand, the reception 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, in order to avoid interference with other uplink transmissions. In order to enable the network device to receive signals sent by the terminal device through the uplink physical channel with proper receiving power, in the uplink power control, the main control is uplink transmitting power when the terminal device sends the uplink physical channel. Alternatively, 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 separate power control mechanisms can be introduced for different channels.

Taking uplink power control of a physical uplink shared channel (physical uplink shared channel, PUSCH) as an example, if a terminal device sends PUSCH to a network device on an uplink active part Bandwidth (BWP) b on a carrier f of a serving cell c, the uplink transmit power of PUSCH in a transmission occasion i may be calculated as follows:

wherein P is _{PUSCH，b，f，c} (i，j，q _d L) is the uplink transmit power of PUSCH in transmission occasion i,can be regarded as an open loop power control section, f _b，f，e (i, l) can be regarded as a closed loop power control section;

P _CMAX，f，c (i) The maximum PUSCH transmit power on carrier f of cell c configured for a terminal device may be described as a power class (power class) supported by the terminal device, where the terminal device sends the PUSCH to a network device on the BWPb of the carrier f of the cell c;

P _{O_PUSCH，b，f，c} (j) The value of the parameter may be that the network device signals (e.g. radio resource control (radio resource control, RRC) signaling, system messages, or downlink control information (downlink control information, DCI), etc.) to the terminal device for the desired (target) received powerIndicated or configured, the parameter may comprise a cell-specific part and a user-specific part; wherein the network device can configure the terminal device with multiple sets { P } _{O_PUSCH，b，f，c} ，α _b，f，c -and indicates by signalling (e.g. DCI etc.) which set of P is used by the terminal device _{O_PUSCH，b，f，c} ，α _b，f，c I.e. indicating by signaling which set of P is used by the terminal equipment _{O_PUSCH，b，f，c} ，α _b，f，c Index value of { P used by terminal device }, the index value is _{O_PUSCH，b，f，c} ，α _b，f，c In the plurality of sets { P } _{O_PUSCH，b，f，c} ，α _b，f，c Index in };

α _b，f，e (j) Is a partial path loss compensation factor, range (0, 1]The value of the parameter may be indicated or configured by the network device for the terminal 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 PUSCH is 15kHz (kilohertz) 2 ^μ Wherein μmay be an integer of 0,1, 2, 4, etc.;

the number of Resource Blocks (RBs) mapped to for PUSCH or the number of RBs used to transmit PUSCH, 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，e (q _d ) For the estimated value of the path loss, the parameter value is used for the path loss compensation, and the parameter value can be that the terminal equipment performs the compensation on the downlink reference signal q _d The path loss estimated by downlink measurement is carried out;

Δ _TFb，f，e (i) Is a parameter value related to the modulation mode and the channel coding rate of the current PUSCH transmission;

f _b，f，e (i, l) is a power adjustment value determined from transmit power control (transmit power control, TPC) commands of a closed loop power control (power control) process l, wherein the TPC commands may be signaled by a network device (e.g., RRC signaling, or DCI, etc.) is indicated or configured for the terminal device. The transmit power control command may also be simply referred to as a power control command.

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 processes 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，e And (i, l), when the terminal equipment supports two closed-loop power control processes, the value of l is 0 or 1, and the value is used for selecting one determined power adjustment value from the two closed-loop power control processes supported by the terminal equipment. The type of closed loop power control may be cumulative (accumulated) or absolute (absolute), among others.

After receiving TPC commands for the closed loop power control procedure l from the network device, the terminal device determines f based on the TPC commands _b，f，e (i, l) in the case of (f), f may be determined by the following cumulative closed loop power control method or absolute closed loop power control method _b，f，c (i，l)：

Accumulating type:wherein delta _{PUSCH，b，f，c} Parameter values indicated for TPC commands (which may also be referred to as TPC command values), f _b，f，c (i-i ₀ L) is transmission time i-i ₀ Closed loop power adjustment value of PUSCH, +. >Indicating transmission occasions i-i ₀ To the transmission opportunity i>The accumulation of the power adjustment step sizes indicated by the TPC commands, wherein the PUSCH of the transmission occasion i can be further understood as the ith transmission of the PUSCH;

absolute formula: f (f) _b，f，c (i，l)＝δ _{PUSCH，b，f，c} (i, l) wherein δ _{PUSCH，b，f，c} (i, l) is a network setPUSCH at transmission timing i, and TPC command value transmitted to the terminal device.

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

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

The DCI formats (formats) carrying the TPC command fields include DCI format 0_0, DCI format 0_1, DCI format 1_0, DCI format 1_1, DCI format 2_2, or DCI format 2_3, which can be specifically classified into two types:

1. DCI format for scheduling PUSCH or physical uplink control channel (physical uplink control channel, PUCCH):

a) DCI format 0_0, or DCI format 0_1: the DCI is used to carry a PUSCH transmission parameter, 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 PUSCH transmission parameter includes one or more of the following parameters: transport block size (transport block size, TBS), modulation scheme, coding rate, modulation encoder scheme (modulation and coding scheme, MCS), time domain resource location, frequency domain resource location, redundancy version (redundancy version, RV), TPC commands, etc.;

b) DCI format 1_0, or DCI format 1_1: a transmission parameter for carrying a PUCCH, the DCI including therein a TPC command field, the size of the TPC command field being a positive integer (e.g. 2) bits (bits), wherein the transmission parameter of 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, etc.;

2. DCI formats specifically used for transmitting TPC commands, which may be transmitted to a group of terminal devices, may include one or more blocks (blocks) each carrying TPC commands of one terminal device, as shown with reference to fig. 2:

a) DCI format 2_2: a TPC command for transmitting a PUCCH/PUSCH, the DCI including one or more TPC fields, each TPC field may be a positive integer (e.g., 2) bits (bits) in size;

b) DCI format 2_3: TPC commands for transmitting sounding reference signals (sounding reference signal, SRS) include one or more TPC fields in the DCI, each TPC field may be a positive integer (e.g., 2) bits (bits) in size.

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

TABLE 0-1

Referring to table 0-1, for TPC commands of DCI format 0_0, DCI format 0_1, DCI format 2_2 (instruction PUSCH) and DCI format 2_3, a cumulative or absolute type corresponding to PUSCH or SRC can be determined from TPC commands (2-bit value of TPC command field)Or->Is a value of (2).

TABLE 0-2

Reference table0-2, for TPC commands of DCI format 1_0, DCI format 1_1, and DCI format 2_2 (instruction PUSCH), the cumulative or absolute type corresponding to PUSCH can be determined from TPC commands (2-bit value in TPC command field) Is a value of (2).

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 are defined, including 35dBm, 23dBm. In the embodiment of the present application, the power level defines the maximum transmission rate of the terminal device (e.g. defines the parameter P in the uplink transmission power of the PUSCH _CMAX，f，c (i))。

With the research of large-scale machine type communication (massive machine type communication, mctc), there are one or more of the following machine type communication (machine type communication, MTC) terminal devices in the communication scenario: video monitoring type terminal equipment, intelligent home, sensors, intelligent wearable equipment and the like. The battery life of the MTC type terminal device is generally required to be several weeks or years, so how to reduce the power consumption of the MTC type terminal device is an important research topic.

Based on the service characteristics and power requirements of the terminal device of the MTC type, for the terminal device of the MTC type, a lower level of power class, such as 23dBm, 14dBm, 4dBm, etc., may be introduced to reduce the maximum transmit power and save power consumption. However, when the maximum transmit power of the terminal device is small, e.g., 4dBm, the space and gain of closed loop power control adjustment may be small and there may be a waste of signaling in the system, including TPC commands. From the perspective of the terminal equipment, the terminal equipment needs to always maintain closed loop power control, so that the calculation complexity is high, and the power consumption and the processing capacity waste are also caused. In order to solve the problems, the embodiment of the application provides a corresponding method and a corresponding device.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings. In addition, it should be understood that in the embodiment of the present application, at least one may be further described as one or more, and a plurality may be two, three, four or more, and the present application is not limited thereto.

In embodiments of the present application, "/" may indicate that the associated object is an "or" relationship, e.g., A/B may represent A or B; "and/or" may be used to describe that there are three relationships associated with an object, e.g., a and/or B, which may represent: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural. In order to facilitate description of the technical solution of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", etc. may be used to distinguish between technical features that are the same or similar in function. The terms "first," "second," and the like do not necessarily denote any order of quantity or order of execution, nor do the terms "first," "second," and the like. In embodiments of the application, the words "exemplary" or "such as" are used to mean that an example, instance, or illustration, an embodiment or design described as "exemplary" or "such as" is not to be interpreted as being preferred or advantageous over other embodiments or designs. The use of the word "exemplary" or "such as" is intended to present the relevant concepts in a concrete fashion to facilitate understanding.

In addition, in the embodiment of the present application, "of", "corresponding" and "corresponding" may be sometimes used in combination, and it should be noted that the meaning to be expressed is consistent when the distinction is not emphasized.

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

[ embodiment one ]

Fig. 3 is a schematic diagram of an uplink transmit power control process according to 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.

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 the embodiment of the present application, a first threshold value for determining whether the terminal device supports closed-loop power control may be preconfigured or set in the network device, or the network device may determine the first threshold value according to a corresponding algorithm, which is not limited in the 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, the terminal device supports closed loop power control when the power level of the terminal device is greater than a first threshold value; when the power class 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 db (decibel-milliwatt), 5dBm, or other real numbers, may be configured according to a communication requirement, or may be pre-written into a network device according to a protocol, which is not limited in the embodiment of the present application.

The terminal device may send (report) capability information of the terminal device, such as information of the power class of the terminal device, to the network device when the terminal device is initially connected to the network device or after the terminal device is connected to the network device. After receiving the information of the power level sent by the terminal equipment, the network equipment can determine whether the terminal equipment supports closed-loop power control according to the power level and the first threshold value of the terminal equipment, and can send indication information to the terminal equipment to indicate whether the terminal equipment supports closed-loop power control. Alternatively, the power class of the terminal device may be carried by an RRC message, or a medium access control (media access control, MAC) Control Element (CE).

In addition, the power level may also be referred to as an index value of a Max TRP, that is, an index value of a maximum emissivity, in one possible implementation, as shown in table 2, an index relationship between several Max TRP index values and a Max TRP is defined, after the terminal device sends information of the power level to the network device, the network device may query table 2 according to the power level of the terminal device to obtain the 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 value.

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 level "4" to the network device, and the network device obtains Max TRP of the terminal device to be 4dBm by looking up table 2 according to the power level "4" of the terminal device, and determines whether the terminal device supports closed loop power control according to the comparison result of the 4dBm and the first threshold value.

In one possible implementation, the indication information may directly indicate whether the terminal device supports closed loop power control. Example: the indication information includes a 1-bit flag (flag) for indicating whether the terminal device supports closed loop power control. As an example, the terminal device is instructed not to support closed-loop power control when the value of the flag is 0, and the terminal device is instructed to support closed-loop power control when the value of the flag is 1; as another example, the terminal device is instructed not to support closed-loop power control when the value of the flag is 1, and the terminal device is instructed to support closed-loop power control when the value of the flag is 0.

In another possible implementation, the indication information may also be used to indicate the first threshold value, indirectly to indicate whether the terminal device supports closed loop power control. 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 class of the terminal equipment.

As an example, the indication information may be sent by the network device to the terminal device via a terminal device specific radio resource control (radio resource control, RRC) message, or other RRC configuration message. As another example, the network device may transmit the indication information to the terminal device through a broadcast message, a system message, a MAC CE, or downlink control information (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) in which the terminal device is configured to perform closed-loop power control. Taking PUSCH transmission as an example, parameter information of closed loop power control of PUSCH may include a power control accumulation (tpc-Accmulation) field/field for indicating a manner of PUSCH closed loop power control. When the tpc-Accmulation 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), when the tpc-Accmulation is not configured to the first value or is configured to a second value, such as when the tpc-Accmulation is configured to be enabled (enabled), the terminal device is instructed to employ cumulative closed loop power control (cumulative closed loop power control procedure). The method can also be used for other uplink channels, such as SRS or PUCCH, and embodiments of the present application are not limited.

As an example, the network device may send the above indication information and parameter information of the closed-loop power control to the terminal device, where the terminal device determines whether the terminal device supports the closed-loop power control according to the above indication information, and when the terminal device supports the closed-loop power control, the terminal device determines the uplink transmit power according to the parameter information of the closed-loop power control. As another example, the parameter information of the closed loop power control described above may be regarded as one example of the indication information described above. 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 the terminal equipment receives the parameter information of the closed-loop power control from the network equipment, the terminal equipment is considered to support the closed-loop power control, and the terminal equipment determines 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, which is not limited by the embodiment of the present application.

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

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

In the embodiment of the application, the terminal equipment can determine whether closed-loop control is supported according to the indication information received from the network equipment. 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 the first threshold value, the terminal equipment does not support closed-loop power control, for example, and when the power level of the terminal equipment is greater than or equal to 4.5dBm, for example, 5dBm, the terminal equipment determines that the terminal equipment supports 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: the terminal equipment determines 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 TPC commands to the terminal device for instructing the terminal device to perform closed-loop power control according to the TPC commands, i.e., the network device may control the terminal device to perform closed-loop power control by sending TPC commands to the terminal device. Taking PUSCH as an example, where the determining of TPC commands by the network device may be determined according to one or more variables such as PUSCH resource allocation, PUSCH modulation coding scheme, received power (reference signal receiving power, RSRP) of a demodulation reference signal of a PUSCH transmitted before, signal-to-interference-plus-noise ratio (signal to interference plus noise ratio, SINR) of the demodulation reference signal, and SINR of a PUSCH transmitted before, which is not limited by the embodiment 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 send the TPC command to the terminal device through other information, which is not limited in the embodiment of the present application.

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

Alternatively, the network device may notify the terminal device of TPC commands of PUSCH, for example, DCI format 2_2, through a TPC-PUSCH-radio network temporary identity (radio network temporary identifier, RNTI) scrambled DCI format. The DCI format 2_2 is a DCI format of a user common packet, and referring to fig. 2, TPC commands of a plurality of terminal devices may be indicated in DCI of each DCI format 2_2 at the same time, TPC commands of each terminal device are indicated by using different bits in the DCI, and the plurality of terminal devices detect the same DCI at the same time and parse the TPC commands of themselves on the specified bits. The designated bit may be configured by the network device to the terminal device, or may be determined by the terminal device according to a corresponding rule, which is not limited in the embodiment of the present application. Such a DCI format may be applicable to a manner in which a network device configures transmission parameters or scheduling information of a PUSCH, where the network device configures, through higher layer signaling (such as RRC, MAC CE, or system message) or DCI, transmission parameters of the PUSCH (such as TBS, MCS, redundancy (redundancy version, RV), time domain resource location, frequency domain resource location, etc. of the PUSCH) to a terminal device, and PUSCH transmission of the terminal device may be performed according to the scheduling information, where the network device does not need to issue DCI for scheduling the PUSCH, so that the network device may issue TPC commands of the PUSCH of the terminal device through TPC-PUSCH-RNTI scrambled DCI formats (such as DCI format 2_2).

After the network device receives the TPC command for scheduling PUSCH, when PUSCH transmission is performed, uplink transmit power of PUSCH may be determined based on an open loop control policy and a closed loop power control policy. As according to

And determining the uplink transmitting power of the current PUSCH transmission. The parameters in the formula may be referred to the corresponding descriptions above, and will not be repeated here.

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

Optionally, taking PUSCH as an example, when the terminal device does not support closed loop power control, the network device does not need to send TPC commands to the terminal device when the terminal device schedules the terminal device to perform PUSCH transmission, for example: when the terminal device does not support closed loop power control, the TPC command of the PUSCH need not be indicated by the DCI, and the time domain resource location, the frequency domain resource location, the MCS, and/or other transmission parameters of the PUSCH may be carried in the DCI.

When the terminal equipment determines the transmitting power of the PUSCH transmission during the PUSCH transmission, the terminal equipment can determine the uplink transmitting power of the current PUSCH transmission based on open loop power control without calculating closed loop power adjustment. As according to

In the embodiment of the present application, the method for indicating TPC command by DCI is not needed, and includes deleting or re-interpreting the TPC command field in DCI for indicating TPC command, where deleting refers to that the DCI no longer carries (includes) the TPC command field, and re-interpreting refers to that the DCI still carries the TPC command field, but the TPC command field is ignored, filled with a specific value (e.g. 0 or 1), or not interpreted as TPC command, e.g. may be interpreted as other instruction information. When the TPC command field is no longer carried in the DCI, the total bit length of the DCI may be reduced, and when the same resource is used for transmission, the code rate for coding the DCI channel may be lower, so that better transmission performance may be obtained. When the TPC command field carried in the DCI may be interpreted as indication information of other functions, the efficiency of using bits in the DCI is improved.

It should be understood that, except PUSCH, the uplink transmit power control provided in the embodiments of the present application is also applicable to PUCCH and/or SRS, and when the network device indicates, through the indication information, that the PUCCH and/or SRS of the terminal device are not transmitted to the terminal device, that the terminal device may not send TPC commands of PUCCH and/or SRS, 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 correspondingly, TPC fields in DCI for power control adjustment of PUCCH and/or SRS may also be deleted or re-interpreted.

[ example two ]

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

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

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

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

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

In the embodiment of the present application, the second threshold value for determining whether the terminal device supports closed loop power control may be predefined, for example, predefined by a protocol, and stored in the terminal device and the network device, respectively. As one example, the terminal device supports closed loop power control when the power level of the terminal device is greater than or equal to a second threshold value; 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, the terminal device supports closed loop power control when the power level of the terminal device is greater than a second threshold value; 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 by the embodiment of the present application. The second threshold value may be the same as or different from the first threshold value, which is not limited in the embodiment of the present application.

The terminal device may determine whether the terminal device supports closed loop power control based on its own power level and a second threshold. The terminal device may send (report) capability information of the terminal device, such as a power class of the terminal device, to the network device. The reporting method may refer to the description in the first embodiment, and will not be repeated here. The network device may also determine whether the terminal device supports closed loop power control based on the power class of the terminal device and the second threshold value sent by the terminal device.

In one possible implementation, the network device may send parameter information of the closed loop power control to the terminal device, and for details, reference is made to the description in the above embodiment, which is not repeated here. Alternatively, the parameter information of the closed loop power control may also be predefined or preconfigured, e.g. preconfigured using cumulative closed loop power control or absolute closed loop power control.

When the terminal equipment supports closed-loop power control, the network equipment can send TPC commands to the terminal equipment, and the TPC commands are used for indicating the terminal equipment to execute closed-loop power control according to the TPC commands; the network device may not send TPC commands to the terminal device when the terminal device does not support closed loop power control. For specific details, please refer to the description of the first embodiment, and the description is omitted here.

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

[ example III ]

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

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

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

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

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

In the embodiment of the application, the terminal equipment can determine whether to support the closed-loop power control according to the capability information of whether the terminal equipment supports the closed-loop power control, the configuration of the terminal equipment and the like, and can send the second indication information to the network equipment to indicate whether the terminal equipment supports the closed-loop power control.

In the embodiments of the present application, the method provided in the embodiments of the present application is described in terms of the network device, the terminal device, and the interaction between the network device and the terminal device, respectively. In order to implement the functions in the method provided by the embodiment of the present application, the network device and the terminal device may include hardware structures and/or software modules, and implement the functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Some of the functions described above are performed in a hardware configuration, a software module, or a combination of hardware and software modules, depending on the specific application of the solution and design constraints.

In the case of integrated units (modules), fig. 6 shows a possible exemplary block diagram of a communication device according to an embodiment of the application, which device 600 may be in the form of software, hardware or software plus hardware, without limitation. The apparatus 600 may include: a processing unit 602 and a transceiving unit 603.

In a possible design, the processing unit 602 is configured to implement the corresponding processing functions. The transceiver unit 603 is configured to support communication of the apparatus 600 with other network entities. Alternatively, the transceiver unit 603 may include 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 code and/or data of the apparatus 600.

The apparatus 600 may be used to implement the functionality of the terminal device in any of the embodiments described above. The processing unit 602 may support the apparatus 600 to perform the actions of the terminal device in the examples of the methods above. 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 transceiver 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, uplink transmit power of the terminal device based on open-loop power control; and when the terminal equipment supports closed-loop power control, determining 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 is specifically configured to determine, when the power class of the terminal device is greater than or equal to the first threshold, that the terminal device supports closed-loop power control when determining, according to the indication information, whether 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 unit 603 is further configured to send information about the power class of the terminal device to the network device.

In a possible design, the transceiver unit 603 is further configured to receive TPC commands 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 commands.

In a 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 a possible design, the transceiver 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 level of the terminal device and a second threshold value, where the second threshold value is predefined;

In one possible design, the processing unit 602 is configured to determine, when the terminal device supports closed-loop power control according to the power level of the terminal device and a second threshold value, and specifically determine that the terminal device supports closed-loop power control when the power level of the terminal device is greater than or equal to the second threshold value; 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 unit 603 is configured to send information about the power class of the terminal device to a network device.

In yet another possible embodiment, the transceiver unit 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, when the terminal device does not support closed-loop power control, uplink transmit power of the terminal device based on open-loop power control; and when the terminal equipment supports closed-loop power control, determining uplink transmitting power of the terminal equipment based on the open-loop power control and the closed-loop power control.

The division of the modules in the embodiments of the present application is merely schematic, and there may be another division manner when actually implementing the division of the logic functions, 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 may be integrated in one module. The integrated modules may be implemented in hardware, in software functional modules, or in hardware and software, which is not limited by the embodiment of the present application. For example: the processing unit 602 may be implemented by a processor, the transceiver unit 603 may be implemented by a transceiver, a communication interface, or the like, and the storage unit 601 may be implemented by a memory.

As shown in fig. 7, the embodiment of the present application further provides a communication device 700, which is configured to implement the functions of the terminal device in the foregoing embodiment. The communication device 700 includes a processor 710 and a communication interface 730. A memory 720 may also be included in the communication device 700. In the embodiment of the present application, the communication interface may be a transceiver, a bus interface, a pin, or other devices, circuits, or apparatuses capable of implementing a communication function, and the embodiment of the present application is not limited. In fig. 7, communication interface 730 is illustrated as transceiver 730.

In one possible design, processor 710 may implement the functions of processing unit 602 in the above-described embodiments, and communication interface 730 may implement the functions of transceiver unit 603 in the above-described 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 configured to read instructions or programs or data stored in the memory 720. When executed, the processor 710 is configured to perform the operations performed by the processing unit 602 in the above embodiment, and the transceiver 730 is configured to perform the operations performed by the transceiver unit 603 in the above embodiment.

It should be understood that the communication apparatus 600 or 700 of the embodiment of the present application may correspond to the terminal device in the communication method (fig. 3 or fig. 4 or fig. 5) of the embodiment of the present application, and the operations and/or functions of the respective modules in the communication apparatus 600 or 700 are respectively for implementing the respective flows of the respective methods in fig. 3 or fig. 4 or fig. 5, and are not repeated herein for brevity. The communication device 600 or 700 may be a terminal device or may be another device capable of realizing the functions of the terminal device, such as a chip system. The other device may be installed in or used in cooperation with the terminal device.

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

As another form of this 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-described method embodiment.

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

In the case of integrated units (modules), fig. 8 shows a possible exemplary block diagram of a further communication device according to an embodiment of the application, which communication device 800 may be in the form of software, hardware or software plus hardware, without limitation. The apparatus 800 may include: a processing unit 802 and a transceiving unit 803.

In one possible design, processing unit 802 is configured to implement the corresponding processing functions. The transceiver unit 803 is used to support communication of the apparatus 800 with other network entities. Alternatively, the transceiver unit 803 may include 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 code and/or data of the apparatus 800.

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

In an embodiment, the transceiver 803 is configured to send indication information to the terminal device, 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 a possible design, the transceiver unit 803 is further configured to send TPC commands to the terminal device when the terminal device supports closed loop power control.

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

In a possible design, the transceiver 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 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 value.

In a possible embodiment, the transceiver 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 transceiver 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 transceiver 803 is configured to send downlink control information DCI to a terminal device, where the DCI is not used to indicate TPC commands 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 a power class of the terminal device and a second threshold value, where the second threshold value is predefined.

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

In a possible design, the transceiver 803 is further configured to send downlink control information DCI to the terminal device, where the DCI is used to indicate TPC commands when the terminal device supports closed loop power control.

The division of the modules in the embodiments of the present application is merely schematic, and there may be another division manner when actually implementing the division of the logic functions, 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 may be integrated in one module. The integrated modules may be implemented in hardware, in software functional modules, or in hardware and software, which is not limited by the embodiment of the present application. For example: the processing unit 802 may be implemented by a processor, the transceiver unit 803 may be implemented by a transceiver, a communication interface, or the like, and the storage unit 801 may be implemented by a memory.

As shown in fig. 9, the embodiment of the present application further provides a communication apparatus 900, which is configured to implement the functions of the network device in the foregoing embodiment. The communication device 900 includes a processor 910 and a communication interface 930. Memory 920 may also be included in the communication device 900. In the embodiment of the present application, the communication interface may be a transceiver, a bus interface, a pin, or other devices, circuits, or apparatuses capable of implementing a communication function, and the embodiment of the present application is not limited. In fig. 9, a communication interface 930 is illustrated as a transceiver 930.

In one possible design, processor 910 may implement the functions of processing unit 802 in the above embodiment, and communication interface 930 may implement the functions of transceiver unit 803 in the above embodiment.

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

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

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

As another form of this embodiment, there is provided a computer program product containing instructions that, when executed, perform the method on the network device side in the method embodiment described above.

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

In the embodiment 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 embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution.

In the embodiment of the present application, the memory may be a nonvolatile memory, such as a hard disk (HDD) or a Solid State Drive (SSD), or may be a volatile 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 embodiments of the present application may also be circuitry or any other device capable of performing memory functions for storing program instructions and/or data.

The technical scheme provided by the embodiment of the application can be realized completely or partially 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, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network device, a terminal device, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more 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 disc (digital video disc, DVD)), or a semiconductor medium, etc.

In the embodiments of the present application, where there is no logical conflict, embodiments may be referred to each other, for example, methods and/or terms between method embodiments may be referred to each other, for example, functions and/or terms between apparatus embodiments and method embodiments may be referred to each other.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. An uplink transmission power control method, comprising:

receiving indication information from a network device, wherein the indication information is used for indicating that the terminal device supports closed-loop power control when the power level of the terminal device is greater than or equal to a first threshold value, and is used for indicating that the terminal device does not support closed-loop power control when the power level of the terminal device is less than the first threshold value; or, the indication information is used for indicating the first threshold value, wherein 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 less than the first threshold value, the terminal equipment does not support closed-loop power control;

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

and when the terminal equipment supports closed-loop power control, determining uplink transmitting power of the terminal equipment based on the open-loop power control and the closed-loop power control.

2. The method of claim 1, wherein the method further comprises:

and sending the information of the power level of the terminal equipment to the network equipment.

3. The method of claim 1 or 2, wherein the method further comprises:

transmit power control, TPC, commands are received 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 commands.

4. The method of claim 1 or 2, wherein the method further comprises:

downlink control information, DCI, is received from a network device, the DCI being used to indicate TPC commands when the terminal device supports closed loop power control, wherein the closed loop power control is performed in accordance with the TPC commands.

5. The method of any one of claims 1-4, wherein the method further comprises:

Receiving DCI from a network device, the DCI not being used to indicate TPC commands when the terminal device does not support closed loop power control.

6. An uplink transmission power control method, comprising:

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

when the terminal equipment supports closed-loop power control, determining uplink transmitting power of the terminal equipment based on open-loop power control and closed-loop power control;

wherein determining whether the terminal device supports closed loop power control according to the power class of the terminal device and the second threshold value comprises:

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

when the power level of the terminal device is less than the second threshold value, the terminal device does not support closed loop power control.

7. The method of claim 6, wherein the method further comprises:

8. The method of claim 6, wherein the method further comprises:

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

9. The method of any one of claims 6-8, wherein the method further comprises:

10. The method of any one of claims 6-8, wherein the method further comprises:

11. The method of any one of claims 6-10, wherein the method further comprises:

12. An uplink transmission power control method, comprising:

transmitting indication information to a terminal device, wherein the indication information is used for indicating that the terminal device supports closed-loop power control when the power level of the terminal device is greater than or equal to a first threshold value, and is used for indicating that the terminal device does not support closed-loop power control when the power level of the terminal device is less than the first threshold value; or, the indication information is used for indicating the first threshold value, wherein 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 less than the first threshold value, the terminal equipment does not support closed-loop power control.

13. The method of claim 12, wherein the method further comprises:

and when the terminal equipment supports closed-loop power control, transmitting a Transmit Power Control (TPC) command to the terminal equipment.

14. 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 TPC commands when the terminal equipment supports closed-loop power control.

15. The method of any one of claims 12-14, wherein the method further comprises:

and sending DCI to the terminal equipment, wherein the DCI is not used for indicating TPC commands when the terminal equipment does not support closed loop power control.

16. The method of any one of claims 12-15, wherein the method further comprises:

information of a power class of the terminal device is received from the terminal device.

17. An uplink transmission power control method, comprising:

receiving second indication information from a terminal device, wherein the second indication information is used for indicating that the terminal device supports closed-loop power control when the power level of the terminal device is greater than or equal to a second threshold value; and when the power level of the terminal equipment is smaller than the second threshold value, the second indication information is used for indicating that the terminal equipment does not support closed-loop power control.

18. The method of claim 17, wherein the method further comprises:

19. The method of claim 17, wherein the method further comprises:

20. The method of claim 17 or 19, wherein the method further comprises:

21. A communication device for implementing the method according to any of claims 1-11.

22. A communication device comprising a processor and a memory, the memory and the processor coupled, the processor configured to perform the method of any of claims 1-11.

23. A communication device is characterized by comprising a processor and a communication interface,

the processor receives indication information from the network device by using the communication interface, wherein the indication information is used for indicating that the terminal device supports closed-loop power control when the power level of the terminal device is greater than or equal to a first threshold value, and the indication information is used for indicating that the terminal device does not support closed-loop power control when the power level of the terminal device is less than the first threshold value; or, the indication information is used for indicating the first threshold value, wherein 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 less than the first threshold value, the terminal equipment does not support closed-loop power control;

When the terminal equipment does not support closed loop power control, the processor is used for determining 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 open-loop power control and closed-loop power control.

24. A communication device comprising a processor configured to:

25. A communication device for implementing the method of any of claims 12-20.

26. A communication device comprising a processor and a memory, the memory coupled to the processor, the processor configured to perform the method of any of claims 12-20.

27. A communication device is characterized by comprising a processor and a communication interface,

the processor sends indication information to a terminal device by using the communication interface, wherein the indication information is used for indicating that the terminal device supports closed-loop power control when the power level of the terminal device is greater than or equal to a first threshold value, and the indication information is used for indicating that the terminal device does not support closed-loop power control when the power level of the terminal device is less than the first threshold value; or, the indication information is used for indicating the first threshold value, wherein 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 less than the first threshold value, the terminal equipment does not support closed-loop power control.

28. A communication device is characterized by comprising a processor and a communication interface,

the processor receives second indication information from the terminal device by utilizing the communication interface, wherein the second indication information is used for indicating that the terminal device supports closed-loop power control when the power level of the terminal device is greater than or equal to a second threshold value; and when the power level of the terminal equipment is smaller than the second threshold value, the second indication information is used for indicating that the terminal equipment does not support closed-loop power control.

29. A communication system comprising the communication device of any one of claims 21-24, and the communication device of any one of claims 25-28.

30. A computer-readable storage medium, in which a computer program or instructions is stored which, when executed by one or more processors, implements the method of any of claims 1-20.