WO2019028923A1

WO2019028923A1 - Power control method and related device

Info

Publication number: WO2019028923A1
Application number: PCT/CN2017/097281
Authority: WO
Inventors: 才宇; 曾勇波; 王键
Original assignee: 华为技术有限公司
Priority date: 2017-08-11
Filing date: 2017-08-11
Publication date: 2019-02-14
Also published as: CN110089161A; CN113490260B; CN110089161B; CN113490260A

Abstract

Disclosed by the present application are a power control method and a related device, which are used to control the power of a terminal device and to reduce the power consumption of the terminal device. The method implemented by the present application comprises: a first terminal receives first target indication information that is sent by a second terminal, the first target indication information being used to cause the first terminal to determine transmission power thereof; and the first terminal determines the transmission power according to the first target indication information.

Description

Power control method and related equipment

Technical field

The present application relates to the field of wireless communications, and in particular, to a power control method and related equipment.

Background technique

Communication of device-to-device (D2D) based on cellular network. Also known as Proximity Service (ProSe) in 3GPP, it is a new technology that allows terminals to communicate directly by multiplexing cell resources under the control of the system, which can increase the spectrum efficiency of the cellular communication system. Reduce the terminal transmit power. In the 3GPP protocol, user equipment (UE) uses a sidelink sidelink to implement a proximity service function.

In D2D communication, the remote user equipment remote UE is connected to the network through the relay user equipment relay UE. The remote UE can be a low-capacity device, such as a wearable device, which is characterized by small size, small battery capacity, and low radio frequency capability. The relay UE can be a high-capability device, such as a high-capacity smart phone, which can be used as a relay node to assist a low-capacity device to connect to the network. In this case, the transmission power of the remote UE needs to be controlled to reduce the remote. The UE avoids interference to other UEs at the same time.

Summary of the invention

The present application provides a power control method for controlling power of a terminal device and reducing power consumption of the terminal device.

A first aspect of the present application provides a power control method, including:

The first terminal receives the first target indication information that is sent by the second terminal, where the first target indication information is used to enable the first terminal to determine the transmission power of the first terminal; the first terminal determines, according to the first target indication information, Transmission power.

As can be seen from the above technical solutions, the present application has the following advantages:

The first terminal receives the first target indication information sent by the second terminal, and the first terminal determines the transmission power of the first terminal according to the first target indication information. It can be understood that, by using the power control method in the present application, the first The terminal determines the transmission power of the first terminal by using the indication of the second terminal. Therefore, the first terminal determines the transmission power without receiving or detecting a signal on the downlink. At this time, the first terminal does not need to monitor the downlink. The first terminal can save power and reduce power consumption. Therefore, the power control method in the present application can determine the power of the terminal device and reduce the power consumption of the terminal device in the case where the terminal device does not receive or detect a signal on the downlink.

In a possible implementation manner, the first target indication information includes at least one of the following indication information: first indication information, second indication information, third indication information, fourth indication information, and fifth indication information; The first indication information is used to indicate a first power configuration parameter, where the first power configuration parameter is determined according to a path loss of the second terminal to the network device; the second indication information is used to indicate a second power configuration parameter, the second The power configuration parameter is configured by the network device; the third indication information is used to indicate that the first terminal determines the transmission power of the first terminal according to the third power configuration parameter, where the third power configuration parameter is configured by the network device; The fourth indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device; the fifth indication information is used to indicate the first Determining, by the terminal, the first terminal to the network device according to the second measurement configuration information Road damage.

In a possible implementation, the method further includes: determining, by the first terminal, the path loss of the second terminal to the first terminal; determining, by the first terminal, the transmission power according to the first target indication information, including:

The first terminal determines the transmission power according to the first target indication information and the path loss of the second terminal to the first terminal.

In a possible implementation manner, the determining, by the first terminal, the transmission power according to the first target indication information, and the path loss of the second terminal to the first terminal includes:

If the path loss difference is greater than or equal to the first threshold, the first terminal determines the transmission power according to the first indication information, where the path loss difference is the path loss of the second terminal to the network device and the second terminal a difference between the path loss to the first terminal, the first threshold being pre-configured or configured by the network device; or

If the path loss difference is less than the second threshold, the first terminal determines the transmission power according to the second indication information, the third indication information, the fourth indication information, or the fifth indication information, where the second threshold is pre-configured or Network device configuration.

In a possible implementation, the first terminal determines the transmission power according to the first target indication information, where the first target indication information is the first indication information, including:

The first terminal of the first power information indicating the configuration parameters based on the first indication, determining that the transmission power is less than or equal to the transmission power P _1, P ₁ which satisfies:

or,

The P _{CMAX is} the maximum output power of the first terminal, where the M is the bandwidth of the resource used by the first terminal to transmit a signal, and the P _{0 is} a first parameter configured by the network device, where the α is configured by the network device. The second parameter.

In a possible implementation, the first terminal determines the transmission power according to the first target indication information, where the first target indication information is the second indication information, including:

Determining, by the first terminal, that the transmission power is less than or equal to the transmission power P ₂ according to the second power configuration parameter indicated in the second indication information, where the P ₂ meets:

The P _{CMAX is} the maximum output power of the first terminal, and the M is the bandwidth of the resource used by the first terminal to transmit signals.

In a possible implementation, where the first target indication information is the third indication information, the method further includes:

Determining, by the first terminal, the third power configuration parameter;

Determining, by the first terminal, the transmission power according to the first target indication information, including:

The first terminal of the third power configuration parameter determining the transmission power less than or equal to the transmission power P _3, P ₃ satisfies the by:

In a possible implementation, the first terminal determines the transmission power according to the first target indication information, where the first target indication information is the fourth indication information, including:

Determining, by the first terminal, a path loss of the first terminal to the network device according to the first measurement configuration information, where the first terminal The measurement configuration information includes at least one of the following information: measurement gap, cell identity, reference signal power, and cyclic prefix configuration information;

The first terminal determines the transmission power according to the path loss of the first terminal to the network device.

In a possible implementation, where the first target indication information is the fifth indication information, the method further includes:

Determining, by the first terminal, the second measurement configuration information, where the second measurement configuration information includes at least one of: a measurement gap, a cell identifier, a reference signal power, and a cyclic prefix configuration information; the first terminal is configured according to the first Determining the transmission power by the target indication information, the first terminal determining, according to the second measurement configuration information, a path loss of the first terminal to the network device; the first terminal according to the path loss of the first terminal to the network device , determine the transmission power.

In a possible implementation, in a case that the first target indication information is the first indication information, the first power configuration parameter is a path loss of the second terminal to the network device; the first terminal is configured according to The first target indication information, and the path loss of the second terminal to the first terminal, determining the transmission power, includes: the first terminal according to the path loss of the second terminal to the network device, and the second terminal to the first The difference between the path losses of a terminal determines the transmission power.

A second aspect of the present application provides a power control method, including: determining, by a second terminal, first target indication information, where the first target indication information is used to enable the first terminal to determine transmission power of the first terminal; The terminal sends the first target indication information to the first terminal.

The second terminal determines the first target indication information, and sends the target indication information to the first terminal, where the first target indication information is used to enable the first terminal to determine the transmission power of the first terminal. It can be understood that, by using the power control method in this application, the second terminal sends the first target indication information to the first terminal, so that the first terminal determines the transmission power of the first terminal, and therefore, the first terminal is not in the downlink. The above transmission power is determined when the signal is received or detected on the road. At this time, the first terminal does not need to monitor the downlink, and the first terminal can save power and reduce power consumption. Therefore, the power control method in the present application can determine the power of the terminal device and reduce the power consumption of the terminal device in the case where the terminal device does not receive or detect a signal on the downlink.

In a possible implementation manner, the first target indication information includes at least one of the following indication information: first indication information, second indication information, third indication information, fourth indication information, and fifth indication information;

The first indication information is used to indicate a first power configuration parameter, where the first power configuration parameter is determined according to a path loss of the second terminal to the network device; the second indication information is used to indicate a second power configuration parameter, where the The second power configuration parameter is configured for the network device; the third indication information is used to indicate that the first terminal determines the transmission power of the first terminal according to the second power configuration parameter, where the third power configuration parameter is configured for the network device The fourth indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device; the fifth indication information is used to indicate The first terminal determines a path loss of the first terminal to the network device according to the second measurement configuration information.

In a possible implementation, the method further includes: determining, by the second terminal, a path loss of the second terminal to the first terminal and a path loss of the second terminal to the network device; The sending, by the terminal, the first target indication information, the second terminal sending the first target to the first terminal according to the path loss of the second terminal to the network device, and the path loss of the second terminal to the first terminal Instructions.

In a possible implementation, the second terminal sends the first target indication information to the first terminal according to the path loss of the second terminal to the network device, and the path loss of the second terminal to the first terminal. The second terminal sends the first indication information to the first terminal, where the path loss difference is the path loss of the second terminal to the network device, and the number of the path loss is greater than or equal to the first threshold. The difference between the second terminal and the path loss of the first terminal, where the first threshold is pre-configured or configured by the network device; or, if the path loss difference is less than the second threshold, the second terminal is to the first terminal Sending the second indication information, the third indication information, the fourth indication information, or the fifth indication information, where the second threshold is pre-configured or configured by the network device.

In a possible implementation manner, the method further includes: determining, by the second terminal, the first power configuration according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal The parameter, or the second terminal determines the first power configuration parameter according to the path loss of the second terminal to the network device, the path loss of the second terminal to the first terminal, and the antenna gain of the network device.

In a possible implementation manner, the first measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and cyclic prefix configuration information; and the second measurement configuration information includes at least one of the following information. One: measurement gap, cell identification, reference signal power, and cyclic prefix configuration information.

A third aspect of the present application provides a power control method, including: determining, by a network device, second target indication information, where the second target indication information includes at least one of the following indication information: sixth indication information and seventh indication information; The sixth indication information is used to indicate a third power configuration parameter, where the third power configuration parameter is used to enable the first terminal to determine transmission power of the first terminal, and the seventh indication information is used to indicate second measurement configuration information, where The second measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device; the network device sends the second target indication information to the first terminal.

The network device sends the second target indication information to the first terminal, which may be used to assist the first terminal to determine the transmission power of the first terminal without receiving or detecting the signal on the downlink. At this time, the first terminal does not need to monitor the downlink. The first terminal can save power and reduce power consumption. Therefore, the power control method in the present application can determine the power of the terminal device and reduce the power consumption of the terminal device in the case where the terminal device does not receive or detect a signal on the downlink.

In a possible implementation manner, the second measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and cyclic prefix configuration information.

In a possible implementation manner, the method further includes: sending, by the network device, third measurement configuration information to the second terminal, where the third measurement configuration information includes part or all information in the second measurement configuration information, The second terminal is a terminal that communicates with the first terminal.

In a possible implementation manner, the third power configuration parameter is used to enable the first terminal to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.

The fourth aspect of the present application provides a terminal, where the terminal is a first terminal, and includes: a receiving unit, configured to receive first target indication information sent by the second terminal, where the first target indication information is used to enable the first terminal Determining the transmission power of the first terminal; the first determining unit is configured to determine the transmission power according to the first target indication information.

In a possible implementation manner, the first target indication information includes at least one of the following indication information: first indication information, second indication information, third indication information, fourth indication information, and fifth indication information; First indication The information is used to indicate a first power configuration parameter, where the first power configuration parameter is determined according to a path loss of the second terminal to the network device; the second indication information is used to indicate a second power configuration parameter, the second power configuration parameter For the network device, the third indication information is used to indicate that the first terminal determines the transmission power of the first terminal according to the third power configuration parameter, where the third power configuration parameter is configured by the network device; The indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device, and the fifth indication information is used to indicate that the first terminal is configured according to the The second measurement configuration information determines a path loss of the first terminal to the network device.

In a possible implementation manner, the terminal further includes:

a second determining unit, configured to determine a path loss of the second terminal to the first terminal; the first determining unit includes: a determining module, configured to use the first target indication information, and the second terminal to the first The path loss of the terminal determines the transmission power.

In a possible implementation, the determining module is specifically configured to: if the path loss difference is greater than or equal to the first threshold, determine the transmission power according to the first indication information, where the path loss difference is the second terminal a difference between a path loss to the network device and a path loss of the second terminal to the first terminal, where the first threshold is pre-configured or configured by the network device; or, if the path loss difference is less than the The second threshold is determined according to the second indication information, the third indication information, the fourth indication information, or the fifth indication information, where the second threshold is pre-configured or configured by the network device.

In a possible implementation, where the first target indication information is the first indication information, the first determining unit is specifically configured to:

The first power information indicating a configuration parameter based on the first indication, determining that the transmission power is less than or equal to the transmission power P _1, P ₁ which satisfies:

or,

In a possible implementation, in a case where the first target indication information is the second indication information, the first determining unit is specifically configured to:

Determining, according to the second power configuration parameter indicated in the second indication information, that the transmission power is less than or equal to the transmission power P ₂ , where the P ₂ meets:

In a possible implementation, in a case that the first target indication information is the third indication information, the terminal further includes:

a third determining unit, configured to determine the third power configuration parameter;

The first determining unit is configured to: determine, according to the third power configuration parameter, that the transmission power is less than or equal to the transmission power P ₃ , where the P ₃ meets:

In a possible implementation, in a case where the first target indication information is the fourth indication information, the first determining unit is specifically configured to:

Determining, according to the first measurement configuration information, a path loss of the first terminal to the network device, where the first measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and a cyclic prefix configuration information. And determining the transmission power according to the path loss of the first terminal to the network device.

In a possible implementation, in a case that the first target indication information is the fifth indication information, the terminal further includes: a fourth determining unit, configured to determine the second measurement configuration information, the second measurement The configuration information includes at least one of the following information: measurement gap, cell identity, reference signal power, and cyclic prefix configuration information;

The first determining unit is configured to determine a path loss of the first terminal to the network device according to the second measurement configuration information, and determine the transmission power according to the path loss of the first terminal to the network device.

In a possible implementation, in a case that the first target indication information is the first indication information, the first power configuration parameter is a path loss of the second terminal to the network device; The determining the transmission power according to the difference between the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal.

The fifth aspect of the present application provides a terminal, where the terminal is a second terminal, and includes: a first determining unit, configured to determine first target indication information, where the first target indication information is used to enable the first terminal to determine the first The transmission power of a terminal. And a sending unit, configured to send the first target indication information to the first terminal.

In a possible implementation manner, the terminal further includes:

a second determining unit, configured to determine a path loss of the second terminal to the first terminal and a path loss of the second terminal to the network device; the sending unit includes: a sending module, configured to use the second terminal to the network device The path loss, and the path loss of the second terminal to the first terminal, send the first target indication information to the first terminal.

In a possible implementation manner, the sending module is specifically configured to:

If the path loss difference is greater than or equal to the first threshold, sending the first indication information to the first terminal, where the path loss difference is the path loss of the second terminal to the network device and the second terminal to the first The difference between the path loss of the terminal, the first threshold is configured in advance or configured by the network device; or, if the path loss difference is less than the second threshold, sending the second indication information to the first terminal, The third indication information, the fourth indication information, or the fifth indication information, where the second threshold is pre-configured or configured by the network device.

In a possible implementation manner, the terminal further includes:

a third determining unit, configured to: according to the path loss of the second terminal to the network device, and the second terminal to the first terminal Path loss, determine the first power configuration parameter, or,

The third determining unit is further configured to determine the first power configuration parameter according to the path loss of the second terminal to the network device, the path loss of the second terminal to the first terminal, and an antenna gain of the network device.

A sixth aspect of the present application provides a network device, including:

a determining unit, configured to determine second target indication information, where the second target indication information includes at least one of the following indication information: sixth indication information and seventh indication information; the sixth indication information is used to indicate the third power configuration parameter The third power configuration parameter is used to enable the first terminal to determine the transmission power of the first terminal; the seventh indication information is used to indicate second measurement configuration information, where the second measurement configuration information is used to make the first terminal Determining the path loss of the first terminal to the network device. The first sending unit is configured to send the second target indication information to the first terminal.

In a possible implementation, the network device further includes: a second sending unit, configured to send third measurement configuration information to the second terminal, where the third measurement configuration information includes a part of the second measurement configuration information Information or all information, the second terminal is a terminal that communicates with the first terminal.

A seventh aspect of the present application provides a first terminal, including:

Receiver, transmitter, memory, bus, and processor;

The bus for connecting the receiver, the transmitter, the memory, and the processor;

The memory is configured to store an operation instruction;

The processor is configured to perform the operations of any one of the preceding claims 1 to 10 by calling the operation instruction.

The eighth aspect of the present application provides a second terminal, including:

Receiver, transmitter, memory, bus, and processor;

The memory is configured to store an operation instruction;

The processor is configured to perform the operations of any one of the preceding claims 11 to 16 by invoking the operation instruction.

The eighth aspect of the present application provides a network device, including:

Receiver, transmitter, memory, bus, and processor;

The memory is configured to store an operation instruction;

The processor is configured to perform the operations of any one of the preceding claims 17 to 20 by calling the operation instruction.

DRAWINGS

FIG. 1 is an application scenario of a solution according to an embodiment of the present invention;

2 is a schematic diagram of an embodiment of a power control method in the present application;

3 is a schematic diagram of another embodiment of a power control method in the present application;

4 is a schematic diagram of another embodiment of a power control method in the present application;

FIG. 5 is a schematic diagram of another embodiment of a power control method in the present application; FIG.

6 is a schematic diagram of another embodiment of a power control method in the present application;

FIG. 7 is a schematic diagram of another embodiment of a power control method in the present application; FIG.

FIG. 8 is a schematic diagram of another embodiment of a power control method according to the present application; FIG.

9 is a schematic diagram of another embodiment of a power control method in the present application;

FIG. 10 is a schematic diagram of another embodiment of a power control method in the present application; FIG.

11 is a schematic diagram of another embodiment of a power control method in the present application;

12 is a schematic diagram of an embodiment of a first terminal in the present application;

FIG. 13 is a schematic diagram of another embodiment of a first terminal in the present application; FIG.

14 is a schematic diagram of an embodiment of a second terminal in the present application;

15 is a schematic diagram of another embodiment of a second terminal in the present application;

16 is a schematic diagram of an embodiment of a network device in the present application;

17 is a schematic diagram of another embodiment of a network device in the present application;

FIG. 18 is a schematic diagram showing the hardware structure of a communication device in the present application.

Detailed ways

The technical solutions in the present application are clearly and completely described in the following with reference to the drawings in the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

The terms "first", "second", "third", "fourth", etc. (if present) in the specification and claims of the present application and the above figures are used to distinguish similar objects without having to use To describe a specific order or order. It is to be understood that the data so used may be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than what is illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

The present application is applied to a wireless communication system, such as a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a Wideband Code Division Multiple Access Wireless (Wideband Code Division Multiple Access Wireless). , WCDMA) system, General Packet Radio Service (GPRS) system, Universal Mobile Telecommunications System (UMTS), especially for LTE systems and their evolution systems System, a new generation of wireless communication systems (new generation, NR).

The present application describes various embodiments in conjunction with a terminal device. The terminal device may be referred to as a user equipment (User Equipment, UE), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal) intelligent terminal, etc., and the terminal device may be A Radio Access Network (RAN) communicates with one or more core networks. For example, the terminal device may be a mobile phone (or "cellular" phone), a computer with a mobile terminal, etc., and the terminal device may also be a portable, portable, handheld, computer built-in or in-vehicle mobile device and a future 5G network. Terminal devices in which they exchange voice or data with a wireless access network. Description of the terminal device: In the present application, the terminal device may further include a relay relay, and the data communication between the base station and the base station may be regarded as a terminal device, which will be introduced in a general sense in the present application.

Additionally, the present application describes various embodiments in connection with network devices. The network device may be an LTE or an evolved base station (Evolutional Node B in the Long Term Evolution (LTE) system or an Authorized Auxiliary Access Long-term Evolution (LAA-LTE) system. e-NodeB) macro base station, micro base station (also referred to as "small base station"), pico base station, access point (AP) or transmission point (TP), or gNodeB (new generation Node B, new A generation of base stations) and so on.

FIG. 1 shows an application scenario in which the solution proposed by the embodiment of the present invention can be applied. The scenario includes a cell base station 101, a user equipment 102 and a user equipment 103 that are within the coverage of the cell base station 101 and communicate with the cell base station 101. The user equipment 103 can communicate with the cell base station 101 through the user equipment 102 access network.

In order to facilitate the understanding of the power determining method in the embodiment of the present application, first, the power control method in the implementation of the present application is described. details as follows:

As shown in FIG. 2, an embodiment of the power control method in this application includes:

201. The second terminal determines first indication information.

Specifically, the second terminal determines the first indication information according to the path loss of the second terminal to the network device.

Optionally, the second terminal receives the reference signal sent by the network device, and determines the path loss of the second terminal to the network device according to the received power of the second terminal receiving or detecting the reference signal and the sending power of the reference signal. The second terminal may receive indication information that is sent by the network device to indicate a transmission power of the reference signal. The second terminal determines that the path loss of the second terminal to the network device is the difference between the transmit power of the reference signal and the received power of the reference signal. Optionally, the second terminal may receive the reference signal sent by the network device multiple times, filter the received power of the multiple reference signals, and determine the path loss of the second terminal to the network device according to the received power of the filtered reference signal. The reference signal may be a cell-specific reference signal (CRS).

The second terminal may further receive indication information for indicating a path loss of the second terminal to the network device. The indication information may be sent by the network device.

The second terminal sends the first indication information to the first terminal according to the path loss of the second terminal to the network device, where the first indication information is used to indicate the first power configuration parameter, and the first power configuration parameter is used according to the second terminal to the network. The path loss of the device is determined. Specifically, the path loss is the abbreviation of the path loss. The path loss includes the attenuation of the signal during the propagation process, and may also include other factors such as the antenna gain. For example, the path loss is the attenuation of the signal in propagation, or the path loss is the attenuation of the signal in propagation, the sum of the antenna gain at the signal transmitting end and the antenna gain at the signal receiving end. The path loss mentioned below and the solution here The meaning of interpretation is the same and will not be repeated.

Optionally, the determining of the first power parameter has the following determination manners:

The first type, the first power configuration parameter may be determined according to the path loss of the second terminal to the network device. Specifically, the target path loss value is a path loss of the second terminal to the network device, and then determined according to the target path loss value. A power configuration parameter.

The second power configuration parameter may be determined according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal, and specifically, using the formula 1 according to the second terminal to the network device The path loss and the path loss of the second terminal to the first terminal are calculated to obtain a target path loss value, and then the first power configuration parameter is determined according to the target path loss value. Among them, the target path loss value is PL ₁ , and the formula 1 is as follows:

The PL _relay-eNB is a path loss of the second terminal to the network device, and the PL _relay-remote is a path loss of the second terminal to the first terminal.

or,

The PL _relay-eNB is the path loss of the second terminal to the network device, the PL _relay-remote is the path loss of the second terminal to the first terminal, and the G _eNB is the antenna gain of the network device.

Third, the first power configuration parameter may also be determined according to the path loss of the second terminal to the network device, the path loss of the second terminal to the first terminal, and the antenna gain of the network device, and specifically, using Equation 2 The path loss of the second terminal to the network device, the path loss of the second terminal to the first terminal, and the antenna gain of the network device are calculated to obtain a target path loss value, and then the first power configuration parameter is determined according to the target path loss value. Among them, the target path loss value is PL ₁ , and the formula 2 is as follows:

or,

The PL _relay-eNB is the path loss of the second terminal to the network device, the PL _relay-remote is the path loss of the second terminal to the first terminal, the G _eNB is the antenna gain of the network device, and the G _relay is the antenna of the second terminal. Gain, G _remote is the antenna gain of the first terminal.

Fourth, the first power configuration parameter may also be a path loss according to the second terminal to the network device, a path loss of the second terminal to the first terminal, an antenna gain of the network device, an antenna gain of the first terminal, and a second terminal. The antenna gain is determined, specifically, using Equation 3 according to the path loss of the second terminal to the network device, the path loss of the second terminal to the first terminal, the antenna gain of the network device, the antenna gain of the first terminal, and the second terminal The antenna gain of the device is calculated to obtain a target path loss value, and then the first power configuration parameter is determined according to the target path loss value. Among them, the target path loss value is PL ₁ , and the formula 3 is as follows:

In any one of the foregoing first to fourth implementations, after the target path loss PL _{1 is} calculated, the first power configuration parameter determined according to the target path loss PL ₁ may be PL ₁ or α* PL ₁ may also be P ₀ +α*PL ₁ , and may be other parameters, and no limitation is imposed on this application. The P ₀ is the first parameter of the network device configuration, and the parameter is the second parameter configured by the network device. The first parameter P ₀ can be a power value or other parameters, and the application does not impose any limitation. Similarly, the second parameter α may be a path loss compensation coefficient or other parameters, and the present application also does not impose any restrictions.

In step 201, the method for determining the path loss of the second terminal to the first terminal by the second terminal is similar to that in step 202, and details are not described herein again.

202. The second terminal sends the first indication information to the first terminal.

Optionally, the second terminal determines a path loss of the second terminal to the first terminal. A determining manner is that the second terminal receives the reference signal sent by the first terminal, and determines the path loss of the second terminal to the first terminal according to the received power of the second terminal receiving or detecting the reference signal and the sending power of the reference signal. The second terminal may receive indication information that is sent by the first terminal to indicate a transmission power of the reference signal. The second terminal determines that the path loss of the second terminal to the first terminal is the difference between the transmission power of the reference signal and the received power of the reference signal. Optionally, the second terminal may receive the reference signal sent by the first terminal multiple times, filter the received power of the multiple reference signals, and determine the path of the second terminal to the first terminal according to the received power of the filtered reference signal. damage. Another determining manner is that the second terminal sends the reference signal to the first terminal, and determines the path loss of the second terminal to the first terminal according to the transmit power of the reference signal and the received power of the first terminal receiving the reference signal. The second terminal may receive indication information that is sent by the first terminal to indicate the received power of the reference signal. The second terminal determines that the path loss of the second terminal to the first terminal is the difference between the transmission power of the reference signal and the received power of the reference signal. In the above two methods, the reference signal may be a reference signal transmitted in a physical sidelink discovery channel (PSDCH), a reference signal transmitted in a physical side shared channel (PSSCH), a reference signal transmitted in a physical sidelink control channel (PSCCH), a reference signal transmitted in a physical sidelink broadcast channel (PSBCH), and a side synchronization signal (SLSS) Any of them.

The second terminal may further receive indication information for indicating a path loss of the second terminal to the first terminal. The indication information may be sent by the first terminal, or sent by the first terminal to the network device, and then sent by the network device to the second terminal.

Further, the second terminal sends the first indication information to the first terminal according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal. Specifically, the second terminal compares the path loss difference with the When the threshold value is greater than or equal to the first threshold, the second terminal sends the first indication information to the first terminal, where the path loss difference is the second terminal to the network device's path loss minus the second The difference between the path loss from the terminal to the first terminal, the path loss difference below The meanings are the same here, and will not be described below. The first threshold is pre-configured or configured by the network device, or preset.

The first threshold may or may not be equal to the second threshold in the following, and no limitation is imposed in the present application.

203. The first terminal determines, according to the first power parameter indicated by the first indication information, a transmission power of the first terminal.

After the first terminal receives the first indication information sent by the second terminal, the first terminal determines the transmission power of the first terminal according to the first power configuration parameter indicated by the first indication information.

Optionally, the first terminal may determine, according to the first power configuration parameter indicated by the first indication information, the first terminal transmission signal according to at least one of a bandwidth and a modulation and coding scheme (MCS) of the transmission signal. Transmission power. The MCS may be an MCS parameter or a parameter reflecting the MCS (such as the ratio of the size of the code block to the number of resource elements).

Optionally, the first terminal determines, according to the first power configuration parameter, the transmission power of the first terminal, so that the transmission power of the first terminal is less than or equal to the power P ₁ , where the P ₁ satisfies any one of the following formulas 4 to 6. formula:

Formula 4:

Formula 5:

Formula 6:

Wherein, in the above three formulas, the P _CMAX is the maximum output power of the first terminal. P _CMAX can also be a configured maximum output power, and the first terminal can determine P _CMAX according to parameters configured by the network device. M is the bandwidth of the transmission signal using a first terminal of the first parameter P ₀ of the configuration of a network device, a second parameter α is configured the network device, a first parameter P ₀ It can be a power value or other parameters, and there is no restriction on this application. Similarly, the second parameter α may be a path loss compensation coefficient or other parameters, and the present application also does not impose any restrictions. In the case that the first terminal further determines the transmission power of the first terminal according to the MCS, optionally, the first terminal determines the transmission power of the first terminal according to the first power configuration parameter, so that the transmission power of the first terminal is less than or equal to the power. P ₁ , wherein the P ₁ satisfies any one of the following formulas 7 to 9:

Formula seven:

Formula eight:

Formula nine:

Among them, among the above three formulas, Δ _TF is a parameter determined according to MCS.

For the above formula 4 to formula 9, when the bandwidth of the resource used by the first terminal to transmit the signal is a fixed size, there is no such thing as 10*log ₁₀ M in the formula.

In a possible design, when the first power configuration parameter indicated by the first power configuration information is PL ₁ , the power P ₁ satisfies the formula 4 or the formula VII; when the first power configuration parameter indicated by the first indication information is α *PL ₁ , the power P ₁ satisfies the formula 6 or the formula 9; when the first power configuration parameter indicated by the first indication information is P ₀ +α*PL ₁ , the power P ₁ satisfies the formula 5 or the formula 8, of course, except In addition to the above three formulas, other formulas may also be used, and no limitation is imposed on this application.

In the power control method of the embodiment, when the second terminal determines that the path loss difference is greater than or equal to the first threshold, the second terminal sends the first indication information to the first terminal, where the first terminal is configured according to the first indication information. The indicated first power configuration parameter determines a transmission power of the first terminal. Enabling the first terminal to receive or detect signals on the downlink The transmission power of the first terminal is determined.

As shown in FIG. 3, another embodiment of the power control method in this application includes:

301. The second terminal determines first indication information.

The first indication information is used to indicate a first power configuration parameter, and the first power configuration parameter is determined according to a path loss of the second terminal to the network device. Optionally, the first power configuration parameter is a path loss of the second terminal to the network device.

302. The second terminal sends the first indication information to the first terminal.

After the second terminal determines the first indication information, the second terminal sends the first indication information to the first terminal.

303. The first terminal determines, according to the first power configuration parameter indicated by the first indication information, a transmit power of the first terminal.

Optionally, the first terminal determines the first power value according to the first power configuration parameter, and the determining method is similar to determining the first power configuration parameter according to the path loss of the second terminal to the network device in step 201, and details are not described herein again. The first terminal determines the transmission power of the first terminal according to the first power value, and the determining method is similar to the determining the transmission power of the first terminal according to the first power configuration parameter in step 203, and details are not described herein again.

Optionally, the first terminal determines the transmission power of the first terminal according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal.

Optionally, the first terminal compares the path loss difference with the first threshold, and when the path loss difference is greater than or equal to the first threshold, the first terminal determines the first according to the first power configuration parameter indicated by the first indication information. The transmission power of the terminal.

In the power control method of the embodiment, the second terminal sends the first indication information to the first terminal, where the first terminal determines that the path loss difference is greater than or equal to the first threshold, the first terminal is configured according to the first indication information. The indicated first power configuration parameter determines a transmission power of the first terminal. The first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.

As shown in FIG. 4, another embodiment of the power control method in this application includes:

401. The second terminal determines second indication information.

The second terminal determines second indication information, where the second indication information is used to indicate the second power configuration parameter.

Optionally, the second power configuration parameter is configured by the network device.

Optionally, the second power configuration parameter indicated by the second indication information may be a third parameter that is configured by the network device, so that the first terminal that does not receive or detect the signal on the downlink determines the transmission power, or may be the foregoing network. The first parameter P _{0 of the} device configuration may also be a fourth parameter configured by the network device to determine the transmission power of the first terminal outside the coverage of the network device, or may be other parameters configured by the network device. Make any restrictions. Optionally, the network device configures, for the same resource pool, a third parameter that is used to determine the transmission power of the first terminal that does not receive or detect the signal on the downlink, and may also be the first parameter P ₀ of the network device configuration. . The resource pool is used by the first terminal to send a signal by using resources in the resource pool.

402. The second terminal sends the second indication information to the first terminal.

Optionally, the second terminal sends the second indication information to the first terminal according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal.

a method for the second terminal to determine a path loss of the second terminal to the network device, and a second terminal determined by the second terminal in the foregoing step 201 The method of the terminal to the network device is similar, and will not be described here.

The method for the second terminal to determine the path loss of the second terminal to the first terminal is similar to the method for the second terminal to determine the second terminal to the first terminal in the foregoing step 202, and details are not described herein again.

Optionally, the second terminal compares the path loss difference with the second threshold. When the path loss difference is less than the second threshold, the second terminal sends the second indication information to the first terminal. The second threshold is pre-configured or configured by the network device, or preset.

403. The first terminal determines, according to the second power parameter indicated by the second indication information, a transmit power of the first terminal.

After the first terminal receives the second indication information sent by the second terminal, the first terminal determines the transmission power of the first terminal according to the second power parameter indicated by the second indication information.

Optionally, the first terminal may determine, according to the second power configuration parameter indicated by the second indication information, the first terminal transmission signal according to at least one of a bandwidth and a modulation and coding scheme (MCS) of the transmission signal. Transmission power. The MCS may be an MCS parameter or a parameter reflecting the MCS (such as the ratio of the size of the code block to the number of resource elements).

Optionally, the first terminal determines the transmission power of the first terminal according to the second power configuration parameter indicated by the second indication information, so that the transmission power of the first terminal is less than or equal to the power P ₂ , where the P ₂ meets:

Formula ten:

The P _CMAX is a maximum output power of the first terminal, and the P _CMAX can also be a configured maximum output power. The first terminal can determine P _CMAX according to parameters configured by the network device. The M is a bandwidth of a resource used by the first terminal to transmit a signal. In the case that the first terminal further determines the transmission power of the first terminal according to the MCS, optionally, the first terminal determines the transmission power of the first terminal according to the second power configuration parameter, so that the transmission power of the first terminal is less than or equal to the power. P ₂ , wherein the P ₂ satisfies the following formula

Formula 11:

among them,

Δ _TF is a parameter determined according to MCS.

For the above formula 10 and formula XI, when the bandwidth of the resource used by the first terminal transmission signal is a fixed size, there is no such thing as 10*log ₁₀ M in the formula.

In the power control method of the embodiment, when the second terminal determines that the path loss difference is less than the second threshold, the second terminal sends the second indication information to the first terminal, where the first terminal indicates according to the second indication information. The second power configuration parameter determines a transmission power of the first terminal. The first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.

As shown in FIG. 5, another embodiment of the power control method in this application includes:

501. The second terminal determines second indication information.

The second indication information is used to indicate a second power configuration parameter, where the second indication information is used to indicate the second power configuration parameter.

Optionally, the second power configuration parameter indicated by the second indication information may be a third parameter that is configured by the network device, so that the first terminal that does not receive or detect the signal on the downlink determines the transmission power, or may be the foregoing network. The first parameter P _{0 of the} device configuration may also be a fourth parameter configured by the network device to determine the transmission power of the first terminal outside the coverage of the network device, or may be other parameters configured by the network device. Make any restrictions.

502. The second terminal sends the second indication information to the first terminal.

After the second terminal determines the second indication information, the second terminal sends the second indication information to the first terminal.

503. The first terminal determines, according to the second power configuration parameter indicated by the second indication information, a transmit power of the first terminal.

After the first terminal receives the second indication information sent by the second terminal, the first terminal determines the transmission power of the first terminal according to the second power configuration parameter indicated by the second indication information.

Optionally, the method for determining, by the first terminal, the transmission power of the first terminal according to the second power configuration parameter is similar to the determining the transmission power of the first terminal according to the second power configuration parameter in step 403, and details are not described herein again.

The first terminal may receive the indication information that is sent by the second terminal to indicate the path loss of the second terminal to the network device, and determine the path loss of the second terminal to the network device.

The method for the first terminal to determine the path loss of the second terminal to the first terminal is similar to the method for the second terminal to determine the second terminal to the first terminal in the foregoing step 202, and details are not described herein again.

Optionally, the first terminal compares the path loss difference with the second threshold. When the path loss difference is less than the second threshold, the first terminal determines, according to the second power configuration parameter indicated by the second indication information, the first terminal. Transmission power

In the power control method of the embodiment, the second terminal sends the second indication information to the first terminal, where the first terminal determines that the path loss difference is less than the second threshold, the first terminal indicates according to the second indication information. The second power configuration parameter determines a transmission power of the first terminal. The first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.

As shown in FIG. 6, another embodiment of the power control method in this application includes:

601. The second terminal determines third indication information.

The second terminal determines third indication information, where the third indication information is used to indicate that the first terminal determines the transmission power of the first terminal according to the third power configuration parameter.

Optionally, the third power configuration parameter is configured by the network device.

Optionally, the third power configuration parameter may be a third parameter configured by the network device to enable the first terminal that does not receive or detect the signal on the downlink to determine the transmission power, or may be the first parameter of the network device configuration. P ₀ may also be a fourth parameter configured by the network device for determining the transmission power of the first terminal outside the coverage of the network device, or may be other parameters configured by the network device, and the application does not impose any limitation.

602. The second terminal sends the third indication information to the first terminal.

Optionally, the second terminal sends the third indication information to the first terminal according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal.

The method for the second terminal to determine the path loss of the second terminal to the network device is similar to the method for the second terminal to determine the second terminal to the network device in the foregoing step 201, and details are not described herein again.

Optionally, the second terminal compares the path loss difference with the second threshold, when the path loss difference is less than the second threshold, The second terminal sends the third indication information to the first terminal. The second threshold is pre-configured or configured by the network device, or preset.

603. The network device sends sixth indication information to the first terminal.

Optionally, the network device sends the sixth indication information to the first terminal, where the sixth indication information is used to indicate the third power configuration parameter.

604. The first terminal determines a third power configuration parameter.

After the first terminal device receives the third indication information sent by the second terminal, the first terminal determines the third power configuration parameter.

Optionally, the first terminal determines the third power configuration parameter according to the sixth indication information sent by the network device.

Further, the third power configuration parameter may be a third parameter configured by the network device to enable the first terminal that does not receive or detect the signal on the downlink to determine the transmission power, or may be the first parameter P of the network device configuration. ₀ , may also be a fourth parameter configured by the network device for determining the transmission power of the first terminal outside the coverage of the network device, or may be other parameters configured by the network device, and the application does not impose any limitation.

605. The first terminal determines, according to the third power parameter, a transmission power of the first terminal.

After the first terminal determines the third power configuration parameter, the first terminal determines the transmission power of the first terminal according to the third power configuration parameter.

Optionally, the first terminal may determine, according to the third power configuration parameter indicated by the second indication information, the first terminal transmission signal according to at least one of a bandwidth and a modulation and coding scheme (MCS) of the transmission signal. Transmission power. The MCS may be an MCS parameter or a parameter reflecting the MCS (such as the ratio of the size of the code block to the number of resource elements). Optionally, the first terminal determines, according to the third power configuration parameter, the transmission power of the first terminal, so that the transmission power of the first terminal is less than or equal to the power P ₃ , where the P ₃ satisfies:

Formula 12:

The P _CMAX is a maximum output power of the first terminal, and the P _CMAX can also be a configured maximum output power. The first terminal can determine P _CMAX according to parameters configured by the network device. The M is a bandwidth of a resource used by the first terminal to transmit a signal. In the case that the first terminal further determines the transmission power of the first terminal according to the MCS, optionally, the first terminal determines the transmission power of the first terminal according to the third power configuration parameter, so that the transmission power of the first terminal is less than or equal to the power. P ₃ , wherein the P ₃ satisfies the following formula

Formula 13:

For the above formula 12 and formula 13, when the bandwidth of the resource used by the first terminal to transmit the signal is a fixed size, there is no such thing as 10*log ₁₀ M in the formula.

In the power control method of the embodiment, when the second terminal determines that the path loss difference is less than the second threshold, the second terminal sends the third indication information to the first terminal, where the first terminal determines the third indication information according to the third indication information. The transmission power of a terminal. The first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink. ,

As shown in FIG. 7, another embodiment of the power control method in this application includes:

701. The second terminal determines third indication information.

The third indication information is used to indicate that the first terminal determines the first end according to the third power configuration parameter. The transmission power of the terminal.

702. The second terminal sends third indication information to the first terminal.

After the second terminal determines the third indication information, the second terminal sends the third indication information to the first terminal.

703. The network device sends sixth indication information to the first terminal.

Step 703 is similar to step 603 above, and details are not described herein again.

704. The first terminal determines a third power configuration parameter.

705. The first terminal determines, according to the third power configuration parameter, a transmit power of the first terminal.

Optionally, step 705 is similar to step 605, and details are not described herein again.

Optionally, the first terminal compares the path loss difference with the second threshold. When the path loss difference is less than the second threshold, the first terminal determines the transmission power of the first terminal according to the third power configuration parameter. The second threshold is pre-configured or configured by the network device, or preset.

In the power control method of the embodiment, the second terminal sends the third indication information to the first terminal, where the first terminal determines that the path loss difference is less than the second threshold, the first terminal determines the first indication according to the third indication information. The transmission power of a terminal. The first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.

As shown in FIG. 8, another embodiment of the power control method in this application includes:

801. The second terminal determines fourth indication information.

The second terminal determines the fourth indication information, where the fourth indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to cause the first terminal to determine the path loss of the first terminal to the network device.

Optionally, the first measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and a cyclic prefix configuration information. Optionally, the cell identifier is a serving cell identifier of the second terminal. The measurement gap is used to cause the first terminal to determine the measured time domain resources. The reference signal power is used to indicate the transmit power of the reference signal, so that The first terminal determines the path loss of the first terminal to the network device. The second terminal may send the fourth indication information by one or more messages.

802. The second terminal sends fourth indication information to the first terminal.

Optionally, the second terminal sends the fourth indication information to the first terminal according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal.

Optionally, the second terminal compares the path loss difference with the second threshold. When the path loss difference is less than the second threshold, the second terminal sends the fourth indication information to the first terminal. The second threshold is pre-configured or configured by the network device, or preset.

803. The first terminal determines, according to the first measurement configuration information, a path loss of the first terminal to the network device.

After the first terminal device receives the fourth indication information, the first terminal determines the path loss of the first terminal to the network device according to the first measurement configuration information indicated by the fourth indication information.

Optionally, the first terminal may receive or detect the reference signal sent by the network setting according to the first measurement configuration information. The first terminal measures the received power of the reference signal. The first terminal determines a path loss of the first terminal to the network device according to the received power of the reference signal. The first terminal determines that the path loss of the first terminal to the network device is the difference between the transmit power of the reference signal and the received power of the reference signal. Optionally, the first terminal may receive the reference signal sent by the network device multiple times, filter the received power of the multiple reference signals, and determine the path loss of the first terminal to the network device according to the received power of the filtered reference signal. The reference signal may be a cell-specific reference signal (CRS). The first terminal may receive indication information sent by the network device or the second terminal to indicate the transmission power of the reference signal, thereby determining the transmission power of the reference signal.

Optionally, in a case that the first measurement configuration information includes a measurement gap, the network device sends indication information for indicating a measurement gap to the second terminal, where the second terminal receives the indication information, and the second terminal according to the indicated measurement gap, A measurement gap in the first measurement configuration information is determined.

Optionally, the second terminal sends the measurement indication information to the first terminal, and after receiving the measurement indication information, the first terminal determines, according to the first measurement configuration information, a path loss of the first terminal to the network device.

804. The first terminal determines, according to the path loss of the first terminal to the network device, the transmission power of the first terminal.

The first terminal determines the transmission power of the first terminal according to the path loss of the first terminal to the network device.

Optionally, the first terminal may determine, according to the path loss of the first terminal to the network device, according to at least one of a bandwidth and a modulation and coding scheme (MCS) of the transmission signal, Transmission power. The MCS may be an MCS parameter or a parameter reflecting the MCS (such as the ratio of the size of the code block to the number of resource elements).

Optionally, the first terminal determines, according to the path loss of the first terminal to the network device, the transmission power of the first terminal, so that the transmission power of the first terminal is less than or equal to the power P ₄ , where the P ₄ meets any of the following formulas. :

The P _CMAX is the maximum output power of the first terminal. P _CMAX can also be a configured maximum output power, and the first terminal can determine P _CMAX according to parameters configured by the network device. M is the bandwidth of the transmission signal using a first terminal of the first parameter P ₀ of the configuration of a network device, a second parameter α is configured the network device, a first parameter P ₀ It can be a power value or other parameters, and there is no restriction on this application. Similarly, the second parameter α may be a path loss compensation coefficient or other parameters, and the present application also does not impose any restrictions. Δ _TF is a parameter determined according to MCS.

For the above two formulas, when the bandwidth of the resource used by the first terminal to transmit the signal is a fixed size, there is no such thing as 10*log ₁₀ M in the formula.

In the power control method of the embodiment, when the second terminal determines that the path loss difference is less than the second threshold, the second terminal sends the fourth indication information to the first terminal, where the first terminal indicates according to the fourth indication information. The first measurement configuration information determines a transmission power of the first terminal. The first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.

As shown in FIG. 9, another embodiment of the power control method in this application includes:

901. The second terminal determines fourth indication information.

Optionally, the first measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and a cyclic prefix configuration information. Optionally, the cell identifier is a serving cell identifier of the second terminal. The measurement gap is used to cause the first terminal to determine the measured time domain resources. The reference signal power is used to indicate the transmit power of the reference signal, such that the first terminal determines the path loss of the first terminal to the network device. The second terminal may send the fourth indication information by one or more messages.

902. The second terminal sends fourth indication information to the first terminal.

After the second terminal determines the fourth indication information, the second terminal sends the fourth indication information to the first terminal.

903. The first terminal determines, according to the first measurement configuration information, a path loss of the first terminal to the network device.

Determining, by the first terminal, the path loss of the first terminal to the network device according to the first measurement configuration information, and determining, by the first terminal, the path loss of the first terminal to the network device according to the first measurement configuration information indicated by the fourth indication information in step 803, I will not repeat them here.

Optionally, the first terminal further determines, according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal, the path loss of the first terminal to the network device.

The first terminal compares the path loss difference with the second threshold. When the path loss difference is less than the second threshold, the first terminal determines the path of the first terminal to the network device according to the first measurement configuration information indicated by the fourth indication information. damage.

Optionally, the first terminal may receive or detect the reference signal sent by the network setting according to the first measurement configuration information. The first terminal measures the received power of the reference signal. The first terminal determines a path loss of the first terminal to the network device according to the received power of the reference signal. The first terminal determines that the path loss of the first terminal to the network device is the difference between the transmit power of the reference signal and the received power of the reference signal. Optionally, the first terminal may receive the reference signal sent by the network device multiple times, filter the received power of the multiple reference signals, and determine the first terminal to the network device according to the received power of the filtered reference signal. Road damage. The reference signal may be a cell-specific reference signal (CRS). The first terminal may receive indication information sent by the network device or the second terminal to indicate the transmission power of the reference signal, thereby determining the transmission power of the reference signal.

Optionally, the first terminal sends the measurement indication information to the second terminal or the network device, and after the first terminal sends the measurement indication information, the first terminal determines the path loss of the first terminal to the network device according to the first measurement configuration information.

904. The first terminal determines, according to the path loss of the first terminal to the network device, the transmission power of the first terminal.

This step 904 is similar to the above step 804, and details are not described herein again.

In the power control method of the embodiment, the second terminal sends the fourth indication information to the first terminal, where the first terminal determines that the path loss difference is less than the second threshold, the first terminal indicates according to the fourth indication information. The first measurement configuration information determines the transmission power of the first terminal. The first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.

As shown in FIG. 10, another embodiment of the power control method in this application includes:

1001. The second terminal determines fifth indication information.

The first terminal determines the fifth indication information, where the fifth indication information is used to instruct the first terminal to determine the path loss of the first terminal to the network device according to the second measurement configuration information.

1002. The network device sends seventh indication information to the first terminal device.

The network device sends the seventh indication information to the first terminal device, where the seventh indication information is used to indicate the second measurement configuration information, and the second measurement configuration information is used to enable the first terminal to determine the path loss of the first terminal to the network device.

Optionally, the second measurement configuration information includes at least one of the following information: measurement gap, cell identity, reference signal power, and cyclic prefix configuration information. Optionally, the cell identifier is a serving cell identifier of the second terminal. The measurement gap is used to cause the first terminal to determine the measured time domain resources. The reference signal power is used to indicate the transmit power of the reference signal, such that the first terminal determines the path loss of the first terminal to the network device. The second terminal may send the fourth indication information by one or more messages.

1003. The network device sends third measurement configuration information to the second terminal.

The network device sends third measurement configuration information to the second terminal, where the third measurement configuration information is part or all of the second measurement configuration information. For example, if the second measurement configuration information is: measurement gap, cell identifier, reference signal power, and cyclic prefix configuration information, the third measurement configuration information is: at least one of a measurement gap, a cell identifier, a reference signal power, and a cyclic prefix configuration information. One.

Optionally, the third measurement configuration information is a measurement gap, and the measurement gap is a time resource that is measured by the first terminal by using the third measurement configuration information.

1004. The second terminal sends the fifth indication information to the first terminal.

Optionally, after the second terminal determines the path loss of the second terminal to the network device, and the path loss of the second terminal to the first terminal, the second terminal according to the path loss of the second terminal to the network device and the second terminal to The road loss of the first terminal is toward the first end The terminal sends the fifth indication information, where the fifth indication information is used to instruct the first terminal to determine the path loss of the first terminal to the network device according to the second measurement configuration information.

Optionally, the second terminal compares the path loss difference with the second threshold. When the path loss difference is less than the second threshold, the second terminal sends the fifth indication information to the first terminal.

1005. The first terminal determines second measurement configuration information.

After the first terminal receives the fifth indication information sent by the second terminal, the second terminal determines the second measurement configuration information.

Optionally, the first terminal determines the second measurement configuration information according to the seventh indication information sent by the network device.

1006. The first terminal determines, according to the second measurement configuration information, a path loss of the first terminal to the network device.

1007. The first terminal determines, according to the path loss of the first terminal to the network device, the transmission power of the first terminal.

Steps 1006 and 1007 are similar to the above steps 803 and 804, and are not described herein again.

In the power control method of the embodiment, when the second terminal determines that the path loss difference is smaller than the second threshold, the second terminal sends the fifth indication information to the first terminal, where the first terminal determines the first indication according to the fifth indication information. The transmission power of a terminal. The first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.

As shown in FIG. 11, another embodiment of the power control method in this application includes:

1101. The second terminal determines fifth indication information.

The second terminal determines the fifth indication information, where the fifth indication information is used to instruct the first terminal to determine the path loss of the first terminal to the network device according to the second measurement configuration information.

The network device sends the seventh indication information to the first terminal device.

1103. The network device sends third measurement configuration information to the second terminal.

Steps 1102 and 1103 are similar to steps 1002 and 1003, respectively, and are not described herein again.

1104. The second terminal sends the fifth indication information to the first terminal.

When the second terminal determines the fifth indication information, the second terminal sends the fifth indication information to the first terminal, where the fifth indication information is used to indicate that the first terminal determines the first terminal to the network device according to the second measurement configuration information. Road damage.

1105. The first terminal determines second measurement configuration information.

After the first terminal receives the fifth indication information sent by the second terminal, the first terminal compares the path loss difference with the second threshold, and when the path loss difference is less than the second threshold, the first terminal determines the second measurement. Configuration information.

1106. The first terminal determines, according to the second measurement configuration information, a path loss of the first terminal to the network device.

1107. The first terminal determines, according to the path loss of the first terminal to the network device, the transmission power of the first terminal.

Steps 1106 and 1107 are similar to steps 804 and 805, respectively, and are not described herein again.

In the power control method of the embodiment, the second terminal sends the fourth indication information to the first terminal, where the first terminal determines that the path loss difference is less than the second threshold, the first terminal determines the first indication according to the fifth indication information. The transmission power of a terminal. The first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.

As shown in FIG. 12, an embodiment of the first terminal of the present application includes:

The receiving unit 1201 is configured to receive the first target indication information that is sent by the second terminal, where the first target indication information is used to enable the first terminal to determine the transmission power of the first terminal.

The first determining unit 1202 is configured to determine the transmission power according to the first target indication information.

In an example, the foregoing first target indication information includes at least one of the following indication information: first indication information, second indication information, third indication information, fourth indication information, and fifth indication information;

The first indication information is used to indicate a first power configuration parameter, where the first power configuration parameter is determined according to the path loss of the second terminal to the network device, and the second indication information is used to indicate a second power configuration parameter, where the foregoing The second power configuration parameter is configured by the foregoing network device, and the third indication information is used to indicate that the first terminal determines the transmission power of the first terminal according to the third power configuration parameter, where the third power configuration parameter is configured by the network device. The fourth indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device, and the fifth indication information is used to indicate the foregoing The first terminal determines, according to the second measurement configuration information, a path loss of the first terminal to the network device.

As shown in FIG. 13, in an example, the foregoing first terminal further includes:

a second determining unit 1303, configured to determine a path loss of the foregoing second terminal to the first terminal;

The first determining unit 1302 includes:

The determining module 13021 is configured to determine the transmission power according to the first target indication information and the path loss of the second terminal to the first terminal.

As shown in FIG. 13, in an example, the determining module 13021 is specifically configured to:

If the path loss difference is greater than or equal to the first threshold, determining the transmission power according to the first indication information, where the path loss difference is the path loss of the second terminal to the network device and the second terminal to the first The difference between the path loss of the terminal, where the first threshold is configured in advance or configured by the network device; or

And if the path loss difference is less than the second threshold, determining the transmission power according to the second indication information, the third indication information, the fourth indication information, or the fifth indication information, where the second threshold is a pre-configured or the network device configuration. of.

As shown in FIG. 13, in an example, in a case where the first target indication information is the first indication information, the first determining unit 1302 is specifically configured to:

The first power information indicating a configuration parameter based on the first indication, determining said transmission power is less than or equal to the transmission power P _1, the above P ₁ satisfies:

or,

The P _CMAX is a maximum output power of the first terminal, the M is a bandwidth of a resource used by the first terminal to transmit a signal, and the P _{0 is} a first parameter configured by the network device, where the α is the network device. The second parameter of the configuration.

As shown in FIG. 13 , in an example, when the first target indication information is the second indication information, the first determining unit 1302 is specifically configured to:

Determining that the transmission power is less than or equal to the transmission power P ₂ according to the second power configuration parameter indicated in the foregoing second indication information, where the P ₂ meets:

The P _CMAX is a maximum output power of the first terminal, and the M is a bandwidth of a resource used by the first terminal to transmit a signal.

As shown in FIG. 13 , in an example, in a case where the first target indication information is the third indication information, The above terminal also includes:

a third determining unit 1304, configured to determine the foregoing third power configuration parameter;

The first determining unit 1302 is specifically configured to:

Determining, according to the third power configuration parameter, that the transmission power is less than or equal to the transmission power P ₃ , and the foregoing P _{3 is} satisfied:

As shown in FIG. 13 , in an example, in a case where the first target indication information is the fourth indication information, the first determining unit 1302 is specifically configured to:

Determining a path loss of the first terminal to the network device according to the foregoing first measurement configuration information, where the first measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and a cyclic prefix configuration information. ;

The transmission power is determined according to the path loss of the first terminal to the network device.

As shown in FIG. 13 , in an example, where the first target indication information is the fifth indication information, the terminal further includes:

The fourth determining unit 1305 is configured to determine the foregoing second measurement configuration information, where the second measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and cyclic prefix configuration information;

The first determining unit 1302 is specifically configured to:

Determining a path loss of the first terminal to the network device according to the second measurement configuration information;

As shown in FIG. 13 , in an example, when the first target indication information is the first indication information, the first power configuration parameter is a path loss of the second terminal to the network device;

The determining module 13021 is specifically configured to:

And determining the transmission power according to a difference between a path loss of the second terminal to the network device and a path loss of the second terminal to the first terminal.

Again, the second terminal in this application is described as follows:

As shown in FIG. 14, an embodiment of the second terminal in this application includes:

As shown in FIG. 15, in an example, the first determining unit 1401 is configured to determine first target indication information, where the first target indication information is used to cause the first terminal to determine a transmission power of the first terminal.

The sending unit 1402 is configured to send the first target indication information to the first terminal.

As shown in FIG. 15 , in an example, the foregoing first target indication information includes at least one of the following indication information: first indication information, second indication information, third indication information, fourth indication information, and fifth indication. information;

The first indication information is used to indicate a first power configuration parameter, where the first power configuration parameter is determined according to the path loss of the second terminal to the network device, and the second indication information is used to indicate a second power configuration parameter, where the foregoing The second power configuration parameter is configured by the network device, and the third indication information is used to indicate that the first terminal determines the transmission power of the first terminal according to the second power configuration parameter, where the third power configuration parameter is the network device configuration. The fourth indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device, and the fifth indication information is used to indicate On The first terminal determines, according to the second measurement configuration information, a path loss of the first terminal to the network device.

As shown in FIG. 15, in an example, the second terminal further includes:

a second determining unit 1503, configured to determine a path loss of the second terminal to the first terminal, and a path loss of the second terminal to the network device;

The sending unit 1502 includes:

The sending module 15021 is configured to send the first target indication information to the first terminal according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal.

As shown in FIG. 15, in an example, the sending module 15021 is specifically configured to:

Sending the first indication information to the first terminal, where the path loss difference is greater than or equal to the first threshold, where the path loss difference is the path loss of the second terminal to the network device and the second terminal to the foregoing The difference between the path loss of a terminal, where the first threshold is configured in advance or configured by the network device; or

And if the path loss difference is less than the second threshold, sending the second indication information, the third indication information, the fourth indication information, or the fifth indication information to the first terminal, where the second threshold is pre-configured or The above network device is configured.

As shown in FIG. 15, in an example, the foregoing terminal further includes:

The third determining unit 1504 is configured to determine the first power configuration parameter according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal, or

The third determining unit 1504 is further configured to determine the first power configuration parameter according to the path loss of the second terminal to the network device, the path loss of the second terminal to the first terminal, and an antenna gain of the network device.

In an example, the first measurement configuration information includes at least one of the following: a measurement gap, a cell identifier, a reference signal power, and cyclic prefix configuration information; and the second measurement configuration information includes at least one of the following information: Measurement gap, cell identification, reference signal power, and cyclic prefix configuration information.

Then, the network device in this application is described as follows:

As shown in FIG. 16, the network device in this application includes:

The determining unit 1601 is configured to determine second target indication information, where the second target indication information includes at least one of the following indication information: sixth indication information and seventh indication information;

The sixth indication information is used to indicate the third measurement configuration parameter, where the third power configuration parameter is used to enable the first terminal to determine the transmission power of the first terminal, and the seventh indication information is used to indicate the second measurement configuration information. The second measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device.

The first sending unit 1602 is configured to send the second target indication information to the first terminal.

In an example, the second measurement configuration information includes at least one of the following: a measurement gap, a cell identity, a reference signal power, and cyclic prefix configuration information.

As shown in FIG. 17, in an example, the foregoing network device further includes:

The second sending unit 1703 is configured to send third measurement configuration information to the second terminal, where the third measurement configuration information includes partial information or all information in the second measurement configuration information, where the second terminal is the first Terminal for terminal communication.

In an example, the third power configuration parameter is configured to enable the first terminal to be received on a downlink The transmission power of the first terminal is determined in the case of detecting a signal.

Finally, the hardware structure of the communication device in the present application is described, wherein the communication device may be any one of the network device, the first terminal, and the second terminal.

As shown in FIG. 18, a hardware structure diagram of a communication device 18 according to an embodiment of the present application includes at least one processor 1801, a communication bus 1802, a memory 1803, and at least one communication interface 1804. The processor 1801 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the execution of the program of the present application. integrated circuit.

Communication bus 1802 can include a path for communicating information between the components described above.

Communication interface 1804, using any type of transceiver, for communicating with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), etc. .

The memory 1803 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions. The dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this. The memory can exist independently and be connected to the processor via a bus. The memory can also be integrated with the processor.

The memory 1803 is configured to store application code for executing the solution of the present application, and is controlled by the processor 1801 for execution. The processor 1801 is configured to execute the application code stored in the memory 1803 to implement the method of implementing data conversion in the cloud data center as described in the above embodiments.

In a specific implementation, as an embodiment, the processor 1801 may include one or more CPUs, such as CPU0 and CPU1 in FIG.

In a particular implementation, as an embodiment, communication device 18 may include multiple processors, such as processor 1801 and processor 1808 in FIG. Each of these processors can be a single-CPU processor or a multi-core processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.

In a particular implementation, as an embodiment, communication device 18 may also include an output device 1805 and an input device 1806. Output device 1805 is in communication with processor 1801 and can display information in a variety of ways. For example, the output device 1805 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. Wait. Input device 1806 is in communication with processor 1801 and can accept user input in a variety of ways. For example, input device 1806 can be a mouse, keyboard, touch screen device, or sensing device, and the like.

The communication device 18 described above can be a general purpose communication device or a dedicated communication device. In the specific implementation The communication device 18 can be a desktop, a portable computer, a web server, a personal digital assistant (PDA), a mobile handset, a tablet, a wireless terminal device, an embedded device, or a device having a similar structure as in FIG. The embodiment of the present application does not limit the type of communication device 18.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it 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 the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be stored by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. The medium of the program code.

The above embodiments are only used to explain the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still The technical solutions described in the embodiments are modified, or some of the technical features are equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present application.

Claims

A power control method, comprising:

The first terminal receives the first target indication information sent by the second terminal, where the first target indication information is used to enable the first terminal to determine the transmission power of the first terminal;

The first terminal determines the transmission power according to the first target indication information.
The power control method according to claim 1, wherein the first target indication information comprises at least one of the following indication information: first indication information, second indication information, third indication information, fourth indication information And fifth indication information;

The first indication information is used to indicate a first power configuration parameter, the first power configuration parameter is determined according to a path loss of the second terminal to the network device, and the second indication information is used to indicate a second power a configuration parameter, where the second power configuration parameter is configured by the network device, where the third indication information is used to indicate that the first terminal determines a transmission power of the first terminal according to a third power configuration parameter, The third power configuration parameter is configured by the network device; the fourth indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to enable the first terminal to determine the first terminal to a path loss of the network device; the fifth indication information is used to indicate that the first terminal determines a path loss of the first terminal to the network device according to the second measurement configuration information.
The power control method according to claim 1 or 2, wherein the method further comprises:

Determining, by the first terminal, a path loss of the second terminal to the first terminal;

Determining, by the first terminal, the transmission power according to the first target indication information, including:

The first terminal determines the transmission power according to the first target indication information and a path loss of the second terminal to the first terminal.
The power control method according to claim 3, wherein the first terminal determines, according to the first target indication information, and the path loss of the second terminal to the first terminal, that the transmission power includes :

If the path loss difference is greater than or equal to the first threshold, the first terminal determines the transmission power according to the first indication information, where the path loss difference is the path of the second terminal to the network device. And the difference between the second terminal and the path loss of the first terminal, where the first threshold is pre-configured or configured by the network device; or

If the path loss difference is less than the second threshold, the first terminal determines the transmission power according to the second indication information, the third indication information, the fourth indication information, or the fifth indication information, where the second threshold is Configured for pre-configuration or the network device.
The power control method according to claim 2 or 4, wherein, in a case where the first target indication information is the first indication information, the first terminal determines according to the first target indication information The transmission power includes:

Said first terminal based on the first information indicating a first power configuration indication parameters, determining the transmit power is less than or equal to the transmission power P 1, P 1 satisfies the:

or,
The P CMAX is a maximum output power of the first terminal, the M is a bandwidth of a resource used by the first terminal to transmit a signal, and the P 0 is a first parameter configured by the network device, α is the second parameter configured by the network device.
The power control method according to claim 2 or 4, wherein, in a case where the first target indication information is the second indication information, the first terminal determines according to the first target indication information The transmission power includes:

Determining, by the first terminal, that the transmission power is less than or equal to the transmission power P 2 according to the second power configuration parameter indicated in the second indication information, where the P 2 meets:

The P CMAX is a maximum output power of the first terminal, and the M is a bandwidth of a resource used by the first terminal to transmit a signal.
The power control method according to claim 2 or 4, wherein, in the case that the first target indication information is the third indication information, the method further includes:

Determining, by the first terminal, the third power configuration parameter;

Determining, by the first terminal, the transmission power according to the first target indication information, including:

The first power terminal according to the third configuration parameter determining the transmission power is less than or equal to the transmission power P 3, P 3 a is satisfied:

The P CMAX is a maximum output power of the first terminal, and the M is a bandwidth of a resource used by the first terminal to transmit a signal.
The power control method according to claim 2 or 4, wherein, in a case where the first target indication information is the fourth indication information, the first terminal determines according to the first target indication information The transmission power includes:

Determining, by the first terminal, a path loss of the first terminal to the network device according to the first measurement configuration information, where the first measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier , reference signal power and cyclic prefix configuration information;

The first terminal determines the transmission power according to a path loss of the first terminal to the network device.
The power control method according to claim 2 or 4, wherein, in the case that the first target indication information is the fifth indication information, the method further includes:

Determining, by the first terminal, the second measurement configuration information, where the second measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and a cyclic prefix configuration information;

Determining, by the first terminal, the transmission power according to the first target indication information, including:

Determining, by the first terminal, a path loss of the first terminal to the network device according to the second measurement configuration information;

The first terminal determines the transmission power according to a path loss of the first terminal to the network device.
The power control method according to claim 3, wherein, in a case where the first target indication information is the first indication information, the first power configuration parameter is the second terminal to the Road loss of network equipment;

Determining, by the first terminal, the transmission power according to the first target indication information, and the path loss of the second terminal to the first terminal includes:

The first terminal determines the transmission power according to a difference between a path loss of the second terminal to the network device and a path loss of the second terminal to the first terminal.
A power control method, comprising:

The second terminal determines first target indication information, where the first target indication information is used to enable the first terminal to determine transmission power of the first terminal.

The second terminal sends the first target indication information to the first terminal.
The power control method according to claim 11, wherein the first target indication information comprises at least one of the following indication information: first indication information, second indication information, third indication information, fourth indication information And fifth indication information;

The first indication information is used to indicate a first power configuration parameter, the first power configuration parameter is determined according to a path loss of the second terminal to the network device, and the second indication information is used to indicate a second power a configuration parameter, where the second power configuration parameter is configured by the network device, and the third indication information is used to indicate that the first terminal determines a transmission power of the first terminal according to the second power configuration parameter, The third power configuration parameter is configured by the network device; the fourth indication information is used to indicate first measurement configuration information, where the first measurement configuration information is used to enable the first terminal to determine the first a path loss of the terminal to the network device; the fifth indication information is used to indicate that the first terminal determines a path loss of the first terminal to the network device according to the second measurement configuration information.
The power control method according to claim 11 or 12, wherein the method further comprises:

Determining, by the second terminal, a path loss of the second terminal to the first terminal and a path loss of the second terminal to a network device;

The sending, by the second terminal, the first target indication information to the first terminal includes:

The second terminal sends the first target indication information to the first terminal according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal.
The power control method according to claim 13, wherein the second terminal is based on the path loss of the second terminal to the network device, and the path loss of the second terminal to the first terminal The first terminal sends the first target indication information, including:

If the path loss difference is greater than or equal to the first threshold, the second terminal sends the first indication information to the first terminal, where the path loss difference is the path of the second terminal to the network device And the difference between the second threshold and the path loss of the first terminal, where the first threshold is pre-configured or configured by the network device; or

If the path loss difference is less than the second threshold, the second terminal sends the second indication information, the third indication information, the fourth indication information, or the fifth indication to the first terminal Information, the second threshold is pre-configured or configured by the network device.
The power control method according to claim 13 or 14, wherein the method further comprises:

Determining, by the second terminal, the first power configuration parameter according to a path loss of the second terminal to the network device and a path loss of the second terminal to the first terminal, or

Determining, by the second terminal, the first power configuration according to a path loss of the second terminal to the network device, a path loss of the second terminal to the first terminal, and an antenna gain of the network device parameter.
The power control method according to any one of claims 12 to 14, wherein the first measurement configuration information comprises at least one of the following information: measurement gap, cell identity, reference signal power, and cyclic prefix configuration information. The second measurement configuration information includes at least one of the following information: measurement gap, cell identifier, reference signal Power and cyclic prefix configuration information.
A power control method, comprising:

The network device determines second target indication information, where the second target indication information includes at least one of the following indication information: sixth indication information and seventh indication information;

The sixth indication information is used to indicate a third power configuration parameter, where the third power configuration parameter is used to enable the first terminal to determine transmission power of the first terminal, and the seventh indication information is used to indicate The second measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device.

The network device sends the second target indication information to the first terminal.
The power control method according to claim 17, wherein the second measurement configuration information comprises at least one of the following: a measurement gap, a cell identity, a reference signal power, and cyclic prefix configuration information.
The power control method according to claim 18, wherein the method further comprises:

The network device sends third measurement configuration information to the second terminal, where the third measurement configuration information includes partial information or all information in the second measurement configuration information, where the second terminal is A terminal that communicates with a terminal.
The power control method according to claim 17, wherein the third power configuration parameter is configured to enable the first terminal to determine the first terminal without receiving or detecting a signal on the downlink. Transmission power.
A terminal, wherein the terminal is a first terminal, including:

a receiving unit, configured to receive first target indication information that is sent by the second terminal, where the first target indication information is used to enable the first terminal to determine transmission power of the first terminal;

a first determining unit, configured to determine the transmission power according to the first target indication information.
The terminal according to claim 21, wherein the first target indication information comprises at least one of the following indication information: first indication information, second indication information, third indication information, fourth indication information, and Five indications;

The first indication information is used to indicate a first power configuration parameter, the first power configuration parameter is determined according to a path loss of the second terminal to the network device, and the second indication information is used to indicate a second power a configuration parameter, where the second power configuration parameter is configured by the network device, where the third indication information is used to indicate that the first terminal determines a transmission power of the first terminal according to a third power configuration parameter, The third power configuration parameter is configured by the network device; the fourth indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to enable the first terminal to determine the first terminal to a path loss of the network device; the fifth indication information is used to indicate that the first terminal determines a path loss of the first terminal to the network device according to the second measurement configuration information.
The terminal according to claim 21 or 22, wherein the terminal further comprises:

a second determining unit, configured to determine a path loss of the second terminal to the first terminal;

The first determining unit includes:

And a determining module, configured to determine the transmission power according to the first target indication information, and a path loss of the second terminal to the first terminal.
The terminal according to claim 23, wherein the determining module is specifically configured to:

If the path loss difference is greater than or equal to the first threshold, determining the transmission power according to the first indication information, where the path loss difference is a path loss of the second terminal to the network device, and the first a difference between the path loss of the second terminal and the first terminal, where the first threshold is pre-configured or configured by the network device; or

If the path loss difference is less than the second threshold, determining the transmission power according to the second indication information, the third indication information, the fourth indication information, or the fifth indication information, where the second threshold is pre-configured or The network device is configured.
The terminal according to claim 22 or 24, wherein, in a case where the first target indication information is the first indication information, the first determining unit is specifically configured to:

A first power information indicating the configuration parameter according to the first indication, determining that the transmission power is less than or equal to the transmission power P 1, P 1 satisfies the:

or,
The P CMAX is the maximum output power of the configuration of the first terminal, the M is the bandwidth of the resource used by the first terminal to transmit a signal, and the first parameter of the network device configuration of the P 0 is The a is a second parameter configured by the network device.
The terminal according to claim 22 or 24, wherein, in a case where the first target indication information is the second indication information, the first determining unit is specifically configured to:

Determining, according to the second power configuration parameter indicated in the second indication information, that the transmission power is less than or equal to a transmission power P 2 , where the P 2 meets:

The P CMAX is a maximum output power of the configuration of the first terminal, and the M is a bandwidth of a resource used by the first terminal to transmit a signal.
The terminal according to claim 22 or 24, wherein, in the case that the first target indication information is the third indication information, the terminal further includes:

a third determining unit, configured to determine the third power configuration parameter;

The first determining unit is specifically configured to:

Determining, according to the third power configuration parameter, that the transmission power is less than or equal to the transmission power P 3 , and the P 3 satisfies:

The P CMAX is a maximum output power of the configuration of the first terminal, and the M is a bandwidth of a resource used by the first terminal to transmit a signal.
The terminal according to claim 22 or 24, wherein, in a case where the first target indication information is the fourth indication information, the first determining unit is specifically configured to:

Determining, according to the first measurement configuration information, a path loss of the first terminal to the network device, where the first measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and Cyclic prefix configuration information;

And determining the transmission power according to the path loss of the first terminal to the network device.
The terminal according to claim 22 or 24, wherein, in the case that the first target indication information is the fifth indication information, the terminal further includes:

a fourth determining unit, configured to determine the second measurement configuration information, where the second measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and a cyclic prefix configuration information;

The first determining unit is specifically configured to:

Determining, according to the second measurement configuration information, a path loss of the first terminal to the network device;

And determining the transmission power according to the path loss of the first terminal to the network device.
The terminal according to claim 23, wherein, in a case that the first target indication information is the first indication information, the first power configuration parameter is the second terminal to the network device Road loss

The determining module is specifically configured to:

And determining the transmission power according to a difference between a path loss of the second terminal to the network device and a path loss of the second terminal to the first terminal.
A terminal, wherein the terminal is a second terminal, including:

The first determining unit is configured to determine first target indication information, where the first target indication information is used to enable the first terminal to determine transmission power of the first terminal.

And a sending unit, configured to send the first target indication information to the first terminal.
The terminal according to claim 31, wherein the first target indication information comprises at least one of the following indication information: first indication information, second indication information, third indication information, fourth indication information, and Five indications;

The first indication information is used to indicate a first power configuration parameter, the first power configuration parameter is determined according to a path loss of the second terminal to the network device, and the second indication information is used to indicate a second power a configuration parameter, where the second power configuration parameter is configured by the network device, and the third indication information is used to indicate that the first terminal determines a transmission power of the first terminal according to the second power configuration parameter, The third power configuration parameter is configured by the network device; the fourth indication information is used to indicate first measurement configuration information, where the first measurement configuration information is used to enable the first terminal to determine the first a path loss of the terminal to the network device; the fifth indication information is used to indicate that the first terminal determines a path loss of the first terminal to the network device according to the second measurement configuration information.
The terminal according to claim 31 or 32, wherein the terminal further comprises:

a second determining unit, configured to determine a path loss of the second terminal to the first terminal and a path loss of the second terminal to a network device;

The sending unit includes:

And a sending module, configured to send first target indication information to the first terminal according to the path loss of the second terminal to the network device, and the path loss of the second terminal to the first terminal.
The terminal according to claim 33, wherein the sending module is specifically configured to:

Transmitting the first indication information to the first terminal, where the path loss difference is a path loss of the second terminal to the network device, and the path loss is greater than or equal to a first threshold. a difference between the path loss of the second terminal and the first terminal, where the first threshold is pre-configured or configured by the network device; or

Sending the second indication information, the third indication information, the fourth indication information, or the fifth indication information to the first terminal, if the path loss difference is less than a second threshold, The second threshold is pre-configured or configured by the network device.
The terminal according to claim 33 or 34, wherein the terminal further comprises:

a third determining unit, configured to determine the first power configuration parameter according to a path loss of the second terminal to the network device and a path loss of the second terminal to the first terminal, or

The third determining unit is further configured to determine, according to the path loss of the second terminal to the network device, the path loss of the second terminal to the first terminal, and an antenna gain of the network device, First power configuration parameter.
The terminal according to any one of claims 32 to 34, wherein the first measurement configuration information comprises at least one of the following information: measurement gap, cell identity, reference signal power, and cyclic prefix configuration information; The second measurement configuration information includes at least one of the following information: measurement gap, cell identity, reference signal power, and cyclic prefix configuration information.
A network device, comprising:

a determining unit, configured to determine second target indication information, where the second target indication information includes at least one of the following indication information: sixth indication information and seventh indication information;

The sixth indication information is used to indicate a third power configuration parameter, where the third power configuration parameter is used to enable the first terminal to determine transmission power of the first terminal, and the seventh indication information is used to indicate The second measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device.

The first sending unit is configured to send the second target indication information to the first terminal.
The network device according to claim 37, wherein the second measurement configuration information comprises at least one of the following: a measurement gap, a cell identity, a reference signal power, and cyclic prefix configuration information.
The network device according to claim 38, wherein the network device further comprises:

a second sending unit, configured to send third measurement configuration information to the second terminal, where the third measurement configuration information includes partial information or all information in the second measurement configuration information, where the second terminal is The terminal that the first terminal communicates with.
The network device according to claim 37, wherein said third power configuration parameter is for causing said first terminal to determine transmission of said first terminal without receiving or detecting a signal on the downlink power.
A first terminal, comprising:

Receiver, transmitter, memory, bus, and processor;

The bus for connecting the receiver, the transmitter, the memory, and the processor;

The memory is configured to store an operation instruction;

The processor is configured to perform the operations of any one of the preceding claims 1 to 10 by calling the operation instruction.
A second terminal, comprising:

Receiver, transmitter, memory, bus, and processor;

The bus for connecting the receiver, the transmitter, the memory, and the processor;

The memory is configured to store an operation instruction;

The processor is configured to perform the operations of any one of the preceding claims 11 to 16 by invoking the operation instruction.
A network device, comprising:

Receiver, transmitter, memory, bus, and processor;

The bus for connecting the receiver, the transmitter, the memory, and the processor;

The memory is configured to store an operation instruction;

The processor is configured to perform the operations of any one of the preceding claims 17 to 20 by calling the operation instruction.