WO2021114055A1 - Method, apparatus and device for determining uplink transmitting power - Google Patents

Abstract

The present application relates to a method, apparatus and device for determining an uplink transmitting power. The method comprises: receiving first indication information from a network device, wherein the first indication information is used for indicating a first uplink path loss; determining a first transmitting power of first uplink information according to the first uplink path loss; and sending the first uplink information according to the first transmitting power. In the embodiments of the present application, an uplink path loss, which is, for example, referred to as a first uplink path loss, of a terminal device can be determined by a network device, without the need for the terminal device itself to measure a downlink reference signal to obtain the uplink path loss, thereby making it possible for there to be no impact on the accuracy of the obtained unlink path loss even if the performance of the terminal device is limited, or if transmitting and receiving antennas of the terminal device are inconsistent, etc.

Description

Method, device and equipment for determining uplink transmission power Technical field

This application relates to the field of mobile communication technologies, and in particular to a method, device, and equipment for determining uplink transmit power.

Background technique

In the long term evolution (LTE) system and the new radio (NR) system, uplink power control is to control the base station to receive each uplink channel and uplink signal at an appropriate received power level. On the one hand, the appropriate received power level means the received power required for the correct decoding of the information carried by each uplink channel. On the other hand, the appropriate received power level means that the transmit power of the uplink channel and the uplink signal cannot be unnecessarily high. , Otherwise it will cause unnecessary interference to other uplink transmissions.

To perform uplink power control, it is generally necessary to calculate the uplink path loss. At present, the uplink path loss used in the uplink power control is obtained by the terminal device by measuring the downlink reference signal (RS). For example, the terminal device can obtain the downlink path loss according to the actual transmit power of the downlink reference signal and the reference signal receive power (RSRP) of the downlink reference signal measured by the terminal device, and use the downlink path loss as the uplink path loss. Loss, thereby performing uplink power control.

However, current terminal equipment strives for low cost, which may lead to a reduction in the number of antennas and bandwidth of the terminal equipment. Such terminal equipment measures the downlink reference signal, and the RSRP obtained may not be accurate enough, resulting in The downlink path loss obtained is inaccurate.

Summary of the invention

The embodiments of the present application provide a method, device, and equipment for determining uplink transmit power, which are used to improve the accuracy of the obtained uplink path loss.

In a first aspect, a first method for determining uplink transmit power is provided. The method includes: receiving first indication information from a network device, where the first indication information is used to indicate a first uplink path loss; The path loss determines the first transmission power of the first uplink information, where the first uplink information includes a first uplink signal or a first uplink channel; and transmits the first uplink information according to the first transmission power.

The method may be executed by a first communication device, and the first communication device may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip. Exemplarily, the first communication device is a terminal device, or a chip set in the terminal device for realizing the function of the terminal device, or other component used for realizing the function of the terminal device. In the following introduction process, it is taken as an example that the first communication device is a terminal device.

In the embodiment of this application, the uplink path loss of the terminal device can be determined by the network device, for example, called the first uplink path loss. The network device sends the first uplink path loss to the terminal device, and the terminal device can use the first uplink path loss. Loss for uplink power control. There is no need for the terminal device to measure the downlink reference signal by itself to obtain the uplink path loss. Even if the performance of the terminal device is limited or the transceiver antennas of the terminal device are inconsistent, the accuracy of the obtained uplink path loss will not be affected. Moreover, the terminal device does not need to perform measurement, and the power consumption of the terminal device can be saved, and the implementation complexity of the terminal device can be reduced. This enables the application scope of the embodiment of the present application to be expanded to more terminal devices, such as MTC terminal devices. The technical solutions of the embodiments of the present application can be applied.

In an optional implementation manner, the first indication information is included in DCI, MAC CE, or RRC signaling.

For example, if the channel changes quickly, the uplink path loss may also change quickly, and the first indication information may be carried in the DCI. Through dynamic signaling, the first uplink path loss can be notified to the terminal device in a relatively timely manner, so that the uplink power control of the terminal device can adapt to channel changes. For example, an indication field may be added to the DCI, and the indication field may include the first uplink path loss of the terminal device. Alternatively, an existing domain in the DCI can also be reused to carry the first uplink path loss of the terminal device. If the first indication information is DCI, DCI may be used to schedule data (uplink data or downlink data) for the terminal device. Then the network device can include the uplink path loss of the terminal device (for example, the first uplink path loss) in the DCI every time data is scheduled for the terminal device (that is, each time the DCI for scheduling data is sent to the terminal device). Send it to the terminal device.

For some scenarios, if the channel changes slowly, the uplink path loss may also change slowly. Therefore, in this case, consider notifying the terminal equipment of the uplink path loss through high-level signaling. For example, the network equipment may periodically or semi-periodically notify the terminal equipment of the first uplink path loss through high-level signaling. The command is, for example, RRC signaling or MAC CE. This situation does not need to be notified by dynamic signaling, and the number of times the network device sends high-level signaling to the terminal device is also less (for example, it is sent periodically or semi-periodicly), which helps to save signaling overhead.

In an optional implementation manner, the method further includes: receiving a TPC from the network device.

In addition to the uplink path loss, the terminal equipment needs to perform uplink power control and may also use TPC. Therefore, the network equipment can also calculate the TPC for this second uplink information transmission. Generally speaking, the calculation of TPC can also consider the measurement results of the historically received uplink information from the terminal device by the network device, as well as the MCS and resource allocation for this scheduling of the second uplink information transmission. Taking the PUSCH as the second uplink information as an example, in general, the calculation of TPC can also consider the historically received PUSCH measurement results from the terminal device by the network device, as well as the MCS and resource allocation for this scheduled PUSCH transmission. .

After the network device determines the TPC, it can send the TPC to the terminal device, and the terminal device receives the TPC from the network device. For example, the network device may send the TPC and the first uplink path loss to the terminal device together, that is, the network device may transmit the TPC and the first uplink path loss in the same signaling to the terminal device. For example, the TPC and the first indication information may be carried in different domains of the DCI. Alternatively, the network device may also send the TPC and the first uplink path loss to the terminal device respectively, that is, the network device may carry the TPC and the first indication information in different signaling and send it to the terminal device. For example, the first indication information is carried in the first signaling, and the TPC is carried in the third signaling. For example, the third signaling is DCI, and the first signaling is RRC or MAC CE; or, the third signaling is DCI, and the first signaling is also DCI, but the two DCIs are not the same. The network device may send the first signaling first and then the third signaling, or may send the third signaling first and then the first signaling, or may send the first signaling and the third signaling together.

In an optional implementation manner, determining the first transmit power according to the first uplink path loss includes:

The first transmit power is determined according to the first uplink path loss and the TPC.

Specifically, according to the difference of the first uplink information, the manner in which the terminal device determines the first transmission power may also be different. For example, when the first uplink information is SRS, PUCCH, or PUSCH, the manner in which the terminal device determines the first transmission power may be different. However, the terminal equipment can determine the first transmit power according to the first uplink path loss and the TPC.

In an optional implementation manner, the method further includes:

Sending second uplink information to the network device, where the second uplink information is used to determine the uplink path loss, and the second uplink information includes a second uplink signal or a second uplink channel.

One way for the network device to determine the first uplink path loss of the terminal device may be that the network device measures the uplink information (for example, the second uplink information) from the terminal device, and can obtain the first uplink path loss according to the measurement result. If the network device obtains the first uplink path loss of the terminal device in this way, the terminal device can send the second uplink information to the network device, and the network device can obtain the first uplink path loss by measuring the second uplink information. It can be considered that the second uplink information is used to assist in determining the first uplink path loss, or in other words, the second uplink information may be used as reference information for determining the first uplink path loss. Of course, in addition to this, the network device may also use other methods to obtain the first uplink path loss of the terminal device, which is not specifically limited.

In an optional implementation manner, the method further includes:

Send a PHR to the network device, where the PHR is used to determine the transmit power of the second uplink information.

If the terminal device is triggered to send the PHR to the network device, the terminal device can also send the PHR to the network device. For example, the terminal device can send the PHR to the network device through the MAC CE. If the network device receives the PHR from the terminal device, the network device may also use the PHR as one of the parameters when determining the first uplink path loss of the terminal device.

In an optional implementation manner, the first uplink signal is SRS, and the first uplink channel is PUSCH or PUCCH.

For example, the first uplink information may include the first uplink signal, or include the first uplink channel, or include the first uplink signal and the first uplink channel. In addition, this is only an example, and the embodiment of the present application does not limit the implementation manner of the first uplink signal, nor does it limit the implementation manner of the first uplink channel.

In an optional implementation manner, the method further includes:

Receiving second signaling from the network device, where the second signaling is used to instruct to apply the uplink path loss from the network device to determine the uplink transmit power.

The uplink path loss of the terminal equipment is estimated by the network equipment, which can be regarded as a mechanism. Whether this mechanism is to be implemented can be determined by the network device. For example, when the terminal device frequently sends uplink information to the network device, the network device can determine that the network device estimates the uplink path loss of the terminal device, or the network device learns that the terminal device’s performance is poor according to the capability information of the terminal device. The uplink path loss measured by the terminal device itself may not be accurate enough, and the network device can determine that the network device can estimate the uplink path loss of the terminal device, and so on. For example, the network device may send second signaling to the terminal device, and the second signaling may be used to instruct the terminal device to apply the uplink path loss from the network device to determine the uplink transmit power, or to instruct the terminal device not to apply the uplink path loss from the network device Determine the uplink transmit power, that is, instruct the terminal device whether the network device estimates the uplink path loss of the terminal device. After the terminal device receives the second signaling from the network device, if the second signaling instructs to apply the uplink path loss from the network device to determine the uplink transmit power, the terminal device can do not need to measure and estimate the uplink path loss by itself, but only needs to receive from The uplink path loss of the network equipment is sufficient. Or, if the second signaling indicates that the uplink path loss from the network device is not used to determine the uplink transmit power, the terminal device can measure and estimate the uplink path loss by itself. For the method of the terminal device to measure and estimate the uplink path loss by itself, please refer to the previous article. Introduction. In this way, different strategies can be adopted for different scenarios, making the way to obtain the uplink path loss more reasonable.

In a second aspect, a second method for determining uplink transmit power is provided. The method includes: receiving second uplink information from a terminal device; determining a first uplink path loss of the terminal device according to the second uplink information, and The first uplink path loss is the uplink path loss of the terminal device; first indication information is sent to the terminal device, where the first indication information is used to indicate the first uplink path loss, and the first uplink path loss The loss is used to determine the uplink transmit power of the terminal device.

The method may be executed by a second communication device, and the second communication device may be a communication device or a communication device capable of supporting the communication device to implement the functions required by the method, such as a chip. Exemplarily, the second communication device is a terminal device, or a chip set in a network device for realizing the function of the terminal device, or other component used for realizing the function of the network device. In the following introduction process, it is taken as an example that the second communication device is a network device.

In the embodiment of this application, the uplink path loss of the terminal device can be determined by the network device, for example, called the first uplink path loss. The network device sends the first uplink path loss to the terminal device, and the terminal device can use the first uplink path loss. Loss for uplink power control. There is no need for the terminal device to measure the downlink reference signal by itself to obtain the uplink path loss. Even if the performance of the terminal device is limited, or the receiving and transmitting antennas of the terminal device are inconsistent, the accuracy of the obtained uplink path loss will not be affected. Moreover, the terminal device does not need to perform measurement, and the power consumption of the terminal device can be saved, and the implementation complexity of the terminal device can be reduced. This enables the application scope of the embodiment of the present application to be expanded to more terminal devices, such as MTC terminal devices. The technical solutions of the embodiments of the present application can be applied. One way for the network device to determine the first uplink path loss of the terminal device may be to obtain the first uplink path loss according to the second uplink information from the terminal device. For example, the network device measures the uplink information (for example, the second uplink information) from the terminal device, and can obtain the first uplink path loss according to the measurement result. If the network device obtains the first uplink path loss of the terminal device in this way, the terminal device can send the second uplink information to the network device, and the network device can obtain the first uplink path loss by measuring the second uplink information. It can be considered that the second uplink information is used to assist in determining the first uplink path loss, or in other words, the second uplink information may be used as reference information for determining the first uplink path loss. Of course, in addition to this, the network device may also use other methods to obtain the first uplink path loss of the terminal device, which is not specifically limited.

In an optional implementation manner, determining the first uplink path loss of the terminal device according to the second uplink information includes:

The first uplink path loss is determined according to the measurement result and the second transmission power, where the second transmission power is the power at which the terminal device transmits the second uplink information, and the measurement result is a comparison of the second uplink information Measured.

The network device needs to obtain the first uplink path loss according to the second uplink information from the terminal device. For example, one way is that the network device measures the second uplink information from the terminal device, and obtains the first uplink path loss according to the measurement result. . If the network device obtains the first uplink path loss of the terminal device in this way, the terminal device can send the second uplink information to the network device, and the network device can obtain the first uplink path loss by measuring the second uplink information. It can be considered that the second uplink information is used to assist in determining the first uplink path loss, or in other words, the second uplink information may be used as reference information for determining the first uplink path loss.

In an optional implementation manner, the second transmission power is determined according to the PHR from the terminal device and the maximum transmission power of the terminal device.

If the terminal device is triggered to send the PHR to the network device, the terminal device can also send the PHR to the network device. For example, the terminal device can send the PHR to the network device through the MAC CE, and the network device receives the PHR from the terminal device through the MAC CE. If the network device receives the PHR from the terminal device, when the network device determines the first uplink path loss of the terminal device, it can determine the second transmission power according to the PHR and the maximum transmission power of the terminal device, and then according to the second transmission power And the measurement result of the second uplink information can determine the first uplink path loss.

In an optional implementation manner, the first indication information is included in DCI, MAC CE, or RRC signaling.

In an optional implementation manner, the method further includes:

Determining a TPC corresponding to the second uplink information, where the TPC is used to determine the transmit power of the first uplink information;

Sending the TPC to the terminal device.

In an optional implementation manner, the method further includes:

Receiving the first uplink information from the terminal device, where the first uplink information includes a first uplink signal or a first uplink channel.

In an optional implementation manner, the second uplink signal is SRS, and the second uplink channel is PUSCH or PUCCH.

In an optional implementation manner, the method further includes:

Sending second signaling to the terminal device, where the second signaling is used to instruct the terminal device to apply the uplink path loss from the network device to determine the uplink transmit power.

Regarding the technical effects of the second aspect or various possible implementation manners, reference may be made to the introduction of the technical effects of the first aspect or the corresponding implementation manners.

In a third aspect, a communication device is provided, for example, the communication device is the first communication device as described above. The first communication device is configured to execute the method in the foregoing first aspect or any possible implementation manner. Specifically, the first communication device may include a module for executing the method in the first aspect or any possible implementation manner, for example, including a processing module and a transceiver module. Exemplarily, the transceiver module may include a sending module and a receiving module. The sending module and the receiving module may be different functional modules, or may be the same functional module, but can implement different functions. Exemplarily, the first communication device is a communication device, or a chip or other component provided in the communication device. Exemplarily, the communication device is a terminal device. In the following, it is taken as an example that the first communication device is a terminal device. For example, the transceiver module may also be implemented by a transceiver, and the processing module may also be implemented by a processor. Alternatively, the sending module may be implemented by a transmitter, and the receiving module may be implemented by a receiver. The transmitter and the receiver may be different functional modules, or may be the same functional module, but can implement different functions. If the first communication device is a communication device, the transceiver is realized by, for example, an antenna, a feeder, and a codec in the communication device. Or, if the first communication device is a chip set in a communication device, the transceiver (or transmitter and receiver) is, for example, a communication interface in the chip, and the communication interface is connected to the radio frequency transceiver component in the communication device to Information is sent and received through radio frequency transceiver components. In the introduction process of the third aspect, the first communication device is a terminal device, and the processing module and the transceiver module are used as examples for the introduction. among them,

The transceiver module is configured to receive first indication information from a network device, where the first indication information is used to indicate a first uplink path loss;

The processing module is configured to determine the first transmit power of the first uplink information according to the first uplink path loss, where the first uplink information includes a first uplink signal or a first uplink channel;

The transceiver module is further configured to send the first uplink information according to the first transmit power.

In an optional implementation manner, the first indication information is included in DCI, MAC CE, or RRC signaling.

In an optional implementation manner, the transceiver module is further configured to receive TPC from the network device.

In an optional implementation manner, the processing module is configured to determine the first transmit power of the first uplink information according to the first uplink path loss in the following manner:

The first transmit power is determined according to the first uplink path loss and the TPC.

In an optional implementation manner, the transceiver module is further configured to send second uplink information to the network device, where the second uplink information is used to determine the uplink path loss, and the second uplink information Including the second uplink signal or the second uplink channel.

In an optional implementation manner, the transceiver module is further configured to send a PHR to the network device, where the PHR is used to determine the transmit power of the second uplink information.

In an optional implementation manner, the first uplink signal is SRS, and the first uplink channel is PUSCH or PUCCH.

In an optional implementation manner, the transceiver module is further configured to receive second signaling from the network device, and the second signaling is used to instruct to apply the uplink path loss determination from the network device Uplink transmit power.

Regarding the technical effects of the third aspect or various possible implementation manners, reference may be made to the introduction of the technical effects of the first aspect or the corresponding implementation manners.

In a fourth aspect, a communication device is provided, for example, the communication device is the second communication device as described above. The second communication device is used to execute the method in the above-mentioned second aspect or any possible implementation manner. Specifically, the second communication device may include a module for executing the method in the second aspect or any possible implementation manner, for example, including a processing module and a transceiver module. Exemplarily, the transceiver module may include a sending module and a receiving module. The sending module and the receiving module may be different functional modules, or may be the same functional module, but can implement different functions. Exemplarily, the second communication device is a communication device, or a chip or other component provided in the communication device. Exemplarily, the communication device is a network device. In the following, it is taken as an example that the second communication device is a network device. For example, the transceiver module may also be implemented by a transceiver, and the processing module may also be implemented by a processor. Alternatively, the sending module may be implemented by a transmitter, and the receiving module may be implemented by a receiver. The transmitter and the receiver may be different functional modules, or may be the same functional module, but can implement different functions. If the second communication device is a communication device, the transceiver is realized by, for example, an antenna, a feeder, and a codec in the communication device. Or, if the second communication device is a chip set in a communication device, the transceiver (or, transmitter and receiver) is, for example, a communication interface in the chip, and the communication interface is connected to a radio frequency transceiver component in the communication device to Information is sent and received through radio frequency transceiver components. In the introduction process of the fourth aspect, the second communication device is continued to be a network device, and the processing module and the transceiving module are taken as examples for the introduction. among them,

The transceiver module is configured to receive second uplink information from a terminal device;

The processing module is configured to determine a first uplink path loss of the terminal device according to the second uplink information, where the first uplink path loss is an uplink path loss of the terminal device;

The transceiver module is further configured to send first indication information to the terminal equipment, where the first indication information is used to indicate a first uplink path loss, and the first uplink path loss is used to determine the uplink of the terminal equipment. Transmit power.

In an optional implementation manner, the processing module is configured to determine the first uplink path loss of the terminal device according to the second uplink information in the following manner:

The first uplink path loss is determined according to the measurement result and the second transmission power, where the second transmission power is the power at which the terminal device transmits the second uplink information, and the measurement result is a comparison of the second uplink information Measured.

In an optional implementation manner, the second transmission power is determined according to the PHR from the terminal device and the maximum transmission power of the terminal device.

In an optional implementation manner, the first indication information is included in DCI, MAC CE, or RRC signaling.

In an alternative embodiment,

The processing module is further configured to determine a TPC corresponding to the second uplink information, where the TPC is used to determine the transmit power of the first uplink information;

The transceiver module is also used to send the TPC to the terminal device.

In an optional implementation manner, the transceiver module is further configured to receive the first uplink information from the terminal device, where the first uplink information includes a first uplink signal or a first uplink channel.

In an optional implementation manner, the second uplink signal is SRS, and the second uplink channel is PUSCH or PUCCH.

In an optional implementation manner, the transceiving module is further configured to send second signaling to the terminal device, and the second signaling is used to instruct the terminal device to apply an upload from the network device. The path loss determines the uplink transmit power.

Regarding the technical effects of the fourth aspect or various possible implementation manners, reference may be made to the introduction of the technical effects of the second aspect or corresponding implementation manners.

In a fifth aspect, a communication device is provided. The communication device is, for example, the first communication device as described above. The communication device includes a processor. Optionally, it may also include a memory for storing computer instructions. The processor and the memory are coupled with each other, and are used to implement the methods described in the first aspect or various possible implementation manners. Alternatively, the first communication device may not include a memory, and the memory may be located outside the first communication device. Optionally, the first communication device may further include a communication interface for communicating with other devices or equipment. The processor, the memory, and the communication interface are coupled with each other, and are used to implement the methods described in the first aspect or various possible implementation manners. For example, when the processor executes the computer instructions stored in the memory, the first communication device is caused to execute the method in the foregoing first aspect or any one of the possible implementation manners. Exemplarily, the first communication device is a communication device, or a chip or other component provided in the communication device. Exemplarily, the communication device is a terminal device.

Wherein, if the first communication device is a communication device, the communication interface is realized by a transceiver (or a transmitter and a receiver) in the communication device, for example, the transceiver is realized by an antenna, a feeder and a receiver in the communication device. Codec and other implementations. Or, if the first communication device is a chip set in a communication device, the communication interface is, for example, an input/output interface of the chip, such as input/output pins, etc., and the communication interface is connected to the radio frequency transceiver component in the communication device to Information is sent and received through radio frequency transceiver components.

In a sixth aspect, a communication device is provided. The communication device is, for example, the second communication device as described above. The communication device includes a processor. Optionally, it may also include a memory for storing computer instructions. The processor and the memory are coupled with each other, and are used to implement the methods described in the second aspect or various possible implementation manners. Alternatively, the second communication device may not include a memory, and the memory may be located outside the second communication device. Optionally, the second communication device may further include a communication interface for communicating with other devices or equipment. The processor, the memory, and the communication interface are coupled with each other, and are used to implement the methods described in the second aspect or various possible implementation manners. For example, when the processor executes the computer instructions stored in the memory, the second communication device is caused to execute the method in the second aspect or any one of the possible implementation manners. Exemplarily, the second communication device is a communication device, or a chip or other component provided in the communication device. Exemplarily, the communication device is a network device.

Wherein, if the second communication device is a communication device, the communication interface is realized by, for example, a transceiver (or transmitter and receiver) in the communication device. For example, the transceiver is realized by an antenna, a feeder, and a receiver in the communication device. Codec and other implementations. Or, if the second communication device is a chip set in a communication device, the communication interface is, for example, an input/output interface of the chip, such as an input/output pin, etc., and the communication interface is connected to a radio frequency transceiver component in the communication device to Information is sent and received through radio frequency transceiver components.

In a seventh aspect, a communication system is provided. The communication system includes the communication device described in the third aspect or the communication device described in the fifth aspect, and the communication device described in the fourth aspect or the communication device described in the sixth aspect. Device.

In an eighth aspect, a computer-readable storage medium is provided, the computer-readable storage medium is used to store computer instructions, and when the computer instructions are executed on a computer, the computer is caused to execute the first aspect or any one of the foregoing The methods described in the possible implementations.

In a ninth aspect, a computer-readable storage medium is provided, the computer-readable storage medium is used to store computer instructions, and when the computer instructions run on a computer, the computer executes the second aspect or any one of the above The methods described in the possible implementations.

In a tenth aspect, a computer program product containing instructions is provided. The computer program product is used to store computer instructions. When the computer instructions run on a computer, the computer executes the first aspect or any one of the above. The methods described in the possible implementations.

In an eleventh aspect, a computer program product containing instructions is provided. The computer program product is used to store computer instructions. When the computer instructions run on a computer, the computer executes the second aspect or any one of the foregoing. The method described in one possible implementation.

In the embodiment of this application, the uplink path loss of the terminal device can be determined by the network device, for example, called the first uplink path loss, and the terminal device does not need to measure the downlink reference signal by itself to obtain the uplink path loss, even if the performance of the terminal device is limited. , Or the inconsistent transmit and receive antennas of the terminal equipment, etc., will not affect the accuracy of the uplink path loss obtained.

Description of the drawings

Figure 1A is a schematic diagram of a base station receiving a PUSCH from a terminal device after sending a downlink reference signal;

FIG. 1B is another schematic diagram of a base station receiving a PUSCH from a terminal device after sending a downlink reference signal;

Figure 2 is a schematic diagram of an application scenario of an embodiment of the application;

FIG. 3 is a flowchart of a method for determining uplink transmit power according to an embodiment of the application;

FIG. 4 is a schematic block diagram of a terminal device provided by an embodiment of the application;

FIG. 5 is a schematic block diagram of a network device provided by an embodiment of this application;

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

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

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

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

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

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

1) Terminal devices, including devices that provide users with voice and/or data connectivity, specifically, include devices that provide users with voice, or include devices that provide users with data connectivity, or include devices that provide users with voice and data connectivity Sexual equipment. For example, it may include a handheld device with a wireless connection function, or a processing device connected to a wireless modem. The terminal device can communicate with the core network via a radio access network (RAN), exchange voice or data with the RAN, or exchange voice and data with the RAN. The terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, vehicle to everything (V2X) terminal equipment , Machine-to-machine/machine-type communications (M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, subscriber unit, subscriber station (subscriber) station), mobile station (mobile station), remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user Agent (user agent), or user equipment (user device), etc. For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal equipment, portable, pocket-sized, hand-held, mobile devices with built-in computers, and so on. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants, PDA), and other equipment. It also includes restricted devices, such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment.

As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

The various terminal devices described above, if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be regarded as vehicle-mounted terminal equipment, for example, the vehicle-mounted terminal equipment is also called on-board unit (OBU). ).

In the embodiment of the present application, the terminal device may also include a relay. Or it can be understood that everything that can communicate with the base station can be regarded as a terminal device.

In the embodiments of the present application, the device for realizing the function of the terminal device may be a terminal device, or a device capable of supporting the terminal device to realize the function, such as a chip system, and the device may be installed in the terminal device. In the embodiments of the present application, the chip system may be composed of chips, or may include chips and other discrete devices. In the technical solutions provided in the embodiments of the present application, the device used to implement the functions of the terminal is a terminal device as an example to describe the technical solutions provided in the embodiments of the present application.

2) Network equipment, including, for example, access network (AN) equipment, such as a base station (e.g., access point), which may refer to equipment that communicates with wireless terminal equipment through one or more cells on the air interface in the access network Or, for example, a network device in a vehicle-to-everything (V2X) technology is a roadside unit (RSU). The base station can be used to convert the received air frame and IP packet to each other, as a router between the terminal device and the rest of the access network, where the rest of the access network can include the IP network. The RSU can be a fixed infrastructure entity that supports V2X applications, and can exchange messages with other entities that support V2X applications. The network equipment can also coordinate the attribute management of the air interface. For example, the network equipment may include the LTE system or the evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in the long term evolution-advanced (LTE-A), or may also include the fifth-generation mobile Communication technology (the 5th generation, 5G) NR system (also referred to as NR system) next generation node B (next generation node B, gNB) or may also include cloud radio access network (cloud radio access network, Cloud RAN) system Centralized unit (CU) and distributed unit (DU) in, the embodiment of the present application is not limited.

The network equipment may also include core network equipment. The core network equipment includes, for example, access and mobility management functions (AMF). Since the embodiments of the present application do not involve the core network, unless otherwise specified in the following text, the network devices mentioned all refer to the access network devices.

In the embodiments of the present application, the device used to implement the function of the network device may be a network device, or a device capable of supporting the network device to implement the function, such as a chip system, and the device may be installed in the network device. In the technical solutions provided in the embodiments of the present application, the device used to implement the functions of the network equipment is a network device as an example to describe the technical solutions provided in the embodiments of the present application.

3) The terms "system" and "network" in the embodiments of this application can be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And/or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. "The following at least one item (a)" or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a). For example, at least one item (a) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .

And, unless otherwise stated, the ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the size, content, order, and timing of multiple objects. , Priority or importance, etc. For example, the first uplink information and the second uplink information are only for distinguishing different uplink information, but do not indicate the difference in content, transmission order, priority, or importance of the two uplink information.

The foregoing introduces some terms and concepts involved in the embodiments of the present application, and the technical features involved in the embodiments of the present application are introduced below.

In the LTE system and the NR system, the uplink power control is to control the base station to receive each uplink channel and uplink signal at an appropriate received power level. On the one hand, the appropriate received power level means the received power required for the correct decoding of the information carried by each uplink channel. On the other hand, the appropriate received power level means that the transmit power of the uplink channel and the uplink signal cannot be unnecessarily high. , Otherwise it will cause unnecessary high interference to other uplink transmissions. In order to enable the base station to receive the uplink channel and uplink signal at an appropriate received power level, in the uplink power control, the main control is the transmit power of the uplink channel or uplink signal. For example, for an uplink channel, the transmission power required by the uplink channel is related to the attenuation experienced by the uplink channel, interference and noise level at the receiving end, etc. Therefore, independent power control mechanisms are introduced for different uplink channels.

Similar to the uplink power control of the LTE system, the uplink power control of the NR system is mainly used to calculate the transmission power of the uplink channel. The transmission power includes an open-loop power control part + a closed-loop power control part.

Open-loop power control mainly supports partial uplink path loss compensation. For example, simply, without considering the antenna gain, for an uplink channel, the transmit power of the uplink channel-the loss experienced by the uplink channel = the received power of the uplink channel, the unit of the formula is dB. Then, the transmit power of the uplink channel = the loss experienced by the uplink channel + the receive power of the uplink channel. When calculating the transmit power of the uplink channel, the terminal device needs to compensate in advance for the loss experienced by the uplink channel, so that the desired received power can be obtained after the path loss is experienced. When calculating the uplink transmit power of the uplink channel, the terminal device can estimate the path loss of the downlink channel through the downlink channel received by the terminal device, and use the path loss of the downlink channel as the path loss of the uplink channel. This process can be referred to as the terminal equipment estimating the uplink path loss based on the downlink measurement.

Closed-loop power control is mainly used by the base station to send transmit power commands to the terminal equipment to adjust the uplink transmit power of the terminal equipment. Generally speaking, the base station determines the uplink channel, the number of frequency domain resources of the uplink signal, the adaptive modulation and coding scheme (MCS), and the received power or signal-to-interference and noise ratio of the previous uplink channel/uplink signal. The transmit power command of the terminal device is sent to the terminal device through the DCI. After receiving the transmit power command, the terminal device can adjust the uplink transmit power of the terminal device accordingly. The transmit power command is, for example, transmit power control (TPC).

Take the power control process of the physical uplink control channel (PUSCH) as an example. For example, a terminal device transmits PUSCH on the uplink active bandwidth part (BWP) b of carrier f of serving cell c, and the transmit power of PUSCH at transmission timing i can be calculated according to the following formula 1, where the unit of transmit power is dBm:

表示PUSCH所映射至的资源块(resource block，RB)数。PL _b,f,c(q _d)表示终端设备通过对下行参考信号进行测量得到的路损估计值，q _d表示用于测量下行路损的下行参考信号。Δ _TF,b,f,c(i)与当次PUSCH传输的调制方式和信道编码码率有关。f _b,f,c(i,l)表示根据基站下发的TPC确定的功率调整状态。 In Formula 1, P _CMAX,f,c(i) represents the maximum transmission power of the PUSCH on the carrier f of the cell c configured for the terminal device. P _{O_PUSCH, b, f, c(j)} represents the expected received power of the PUSCH configured by the base station for the terminal device, including the cell-specific part P _{o_pusch} and the user-specific part P _{o_ue_pusch} . α _{b, f, c} (j) represents the partial path loss compensation factor configured by the base station for the terminal equipment, and the value range is (0, 1]. μ represents the PUSCH sub-carrier spacing.

Indicates the number of resource blocks (resource block, RB) to which the PUSCH is mapped. PL _{b, f, c} (q _d ) represents the path loss estimation value obtained by the terminal equipment by measuring the downlink reference signal, and q _d represents the downlink reference signal used to measure the downlink path loss. _{ΔTF, b, f, c} (i) is related to the modulation mode and channel coding rate of the current PUSCH transmission. f _{b, f, c} (i, l) represent the power adjustment state determined according to the TPC issued by the base station.

Among them, _{there are two calculation methods for f b, f, c} (i, l), cumulative and absolute, and the terminal device can select one of them to calculate according to the instructions of the base station.

The cumulative calculation method is:

The calculation method of the absolute formula is: f _{b, f, c} (i, l) = δ _{PUSCH, b, f, c} (i, l).

Among them, l represents a closed loop process, and the value of l is {0,1}. _{The δ PUSCH, b, f, c} (m, l) or δ _{PUSCH, b, f, c} (i, l) in the formula are indicated by TPC.

In the NR system, beam-forming is introduced. Taking PUSCH as an example, in order to support uplink beam-forming, the uplink path loss should reflect the beam-forming gain of the uplink beam pair used for PUSCH transmission. Due to the reciprocity of the uplink and downlink beams, the uplink path loss can be estimated by using the downlink beam to measure the transmitted downlink reference signal. In addition, due to the movement of the terminal device or channel changes, the uplink beam pair used for PUSCH transmission will change. Therefore, in order to support uplink beam-forming management, the terminal device needs to maintain multiple downlink path loss estimates related to the downlink beam pair at the same time. That is, the base station may send downlink reference signals through multiple downlink beams, and the terminal device needs to measure the downlink reference signals from the multiple downlink beams to obtain corresponding downlink path losses. When the base station instructs the terminal device to use a certain uplink beam pair for PUSCH transmission, the terminal device uses the downlink path loss estimated by the downlink beam pair measurement associated with the uplink beam pair as the uplink path loss, thereby performing PUSCH power control.

The specific working mechanism is: the base station configures a plurality of downlink reference signals for measurement on the terminal device, and the terminal device measures each downlink reference signal to obtain the downlink path loss. The base station configures the association mapping between the sounding reference signal resource indication (SRI) and the downlink reference signal through high-level signaling, where the SRI is the downlink control information (downlink control information, DCI) used by the base station to issue uplink scheduling commands to the terminal equipment. The index of a sounding reference signal (SRS) resource indicated in ). SRS is an uplink reference signal used for uplink channel measurement. The SRS corresponds to the uplink beam one-to-one. Therefore, the downlink reference signal is associated with the SRI, that is, the uplink beam is associated. In addition, when the base station configures the associated mapping of SRI and downlink reference signals, it will also configure the associated mapping of SRI and {P _{o_ue_pusch} ,α _b,f,c (j)}, as well as the closed loop process 1, so that the terminal device can calculate the uplink The transmit power of the channel. The terminal equipment measures multiple downlink reference signals and obtains multiple downlink path losses. When the DCI containing the SRI schedules PUSCH transmission, the terminal equipment uses the downlink path loss corresponding to the downlink reference signal associated with the SRI carried by the DCI to calculate the PUSCH The transmit power is the power control for PUSCH.

For example, refer to Figure 1A. The base station sends a downlink reference signal 1 through the downlink beam 1, and a downlink reference signal 2 through the downlink beam 2. The terminal equipment measures the downlink reference signal 1 to obtain the downlink path loss 1, and measures the downlink reference signal 2 to obtain the downlink path loss 2. The base station sends the DCI to the terminal device for scheduling the terminal device to send the PUSCH. The DCI carries the SRI=1, that is, the SRI is associated with the downlink reference signal 1. Therefore, the terminal device selects the downlink path loss 1 as the uplink path loss, calculates the PUSCH transmit power according to the uplink path loss, and then transmits the PUSCH in the uplink beam 1 according to the calculated transmit power. The uplink beam 1 corresponds to the downlink beam 1. In addition, the uplink beam 2 corresponds to the downlink beam 2, but the terminal device does not select the uplink beam 2 to transmit the PUSCH according to the instruction of the base station.

For another example, refer to FIG. 1B. The base station sends a downlink reference signal 1 through the downlink beam 1, and a downlink reference signal 2 through the downlink beam 2. The terminal equipment measures the downlink reference signal 1 to obtain the downlink path loss 1, and measures the downlink reference signal 2 to obtain the downlink path loss 2. The base station sends DCI to the terminal device for scheduling the terminal device to send the PUSCH. The DCI carries SRI=2, that is, the SRI is associated with the downlink reference signal 2. Therefore, the terminal equipment selects the downlink path loss 2 as the uplink path loss, calculates the PUSCH transmit power according to the uplink path loss, and then transmits the PUSCH in the uplink beam 2 according to the calculated transmit power. The uplink beam 2 corresponds to the downlink beam 2. In addition, the uplink beam 1 corresponds to the downlink beam 1, but the terminal device does not select the uplink beam 1 to transmit the PUSCH according to the instruction of the base station.

The following describes the process in which the terminal device determines the uplink path loss based on the measurement of the downlink reference signal, taking the terminal device's uplink power control on the PUSCH as an example. Here is only a way for the terminal equipment to determine the corresponding downlink path loss based on a downlink reference signal. As mentioned above, the terminal equipment may need to measure multiple downlink reference signals to obtain multiple downlink path losses, then the terminal equipment This is equivalent to the need to perform the following process of determining the downlink path loss multiple times.

When a terminal device initially accesses the base station, the base station configures the terminal device with relevant parameters for uplink power control, including _{Po_pusch} , {P _{o_ue_pusch} ,α _b,f,c (j)}, which are used to calculate Δ _{TF,b,f, The parameter of c} (i), the downlink reference signal resource used for measurement, and the calculation of f _{b, f, c} (i, l) are cumulative or absolute.

According to the current protocol definition, PL = reference signal power-higher layer filter RSRP (higher layer filter RSRP). Among them, PL represents the downlink path loss, and the reference signal power represents the transmit power of the downlink reference signal, which can be configured by the base station to the terminal equipment through signaling. For example, the base station may configure the deposit signal power to the terminal equipment through high-level signaling. The RSRP after high-level filtering represents the received power obtained by the terminal device after measuring and filtering the received downlink reference signal. For example, the base station can transmit the downlink reference signal multiple times (for example, periodically), and the terminal device can measure the received downlink reference signal. The reference signal is subjected to measurement filtering, and the RSRP after the high-level filtering may be a comprehensive result after the terminal device performs measurement filtering on multiple downlink reference signals.

可以根据高层信令配置的参数以及DCI所指示的调制与编码策略(modulation and coding scheme，MCS)确定Δ _TF,b,f,c(i)，可以根据DCI携带的探测参考信号资源指示(sounding reference signal resource indication，SRI)确定{P _{o_ue_pusch},α _b,f,c(j)}，可以根据DCI携带的SRI确定采用相应的下行参考信号测量得到的PL _b,f,c(q _d)，可以根据DCI携带的SRI确定闭环进程l的取值，从而确定f _b,f,c(i,l)。 If the base station schedules the terminal equipment to send the PUSCH through downlink control information (DCI), the terminal equipment determines part of the PUSCH power control parameters according to the received DCI. For example, the terminal device may determine according to the frequency domain resource allocation indication information in the DCI

_{The ΔTF, b, f, c} (i) can be determined according to the parameters configured by the high-level signaling and the modulation and coding scheme (MCS) indicated by the DCI, and the sounding reference signal resource indication (sounding reference signal) carried by the DCI can be determined. The reference signal resource indication (SRI) determines {P _{o_ue_pusch} ,α _{b, f, c (j)}, and the PL b, f, c} (q _d ) measured by the corresponding downlink reference signal can be determined according to the SRI carried by the DCI, The value of the closed-loop process l can be determined according to the SRI carried by the DCI, thereby determining f _{b, f, c} (i, l).

When the terminal device transmits the PUSCH according to the scheduling of the DCI, it can calculate the transmission power of the PUSCH according to the above formula 1 according to the above parameters and other power control parameters pre-configured by the base station. In addition, if the terminal device is also triggered to report a power headroom report (PHR) when sending the PUSCH, the terminal device can send the PHR to the base station while sending the PUSCH. For example, the PHR can be controlled through media access. control (MAC) control element (CE) transmission. The PHR corresponding to the PUSCH is a type 1 (type 1) PHR, so the terminal device sends a type 1 PHR to the base station. For PUSCH, PHR indicates how much power the terminal device can use in addition to the transmit power used by the current PUSCH transmission. For example, the calculation method of PHR of type 1 is as follows:

Regarding the introduction of each parameter in Formula 2, please refer to the introduction to the parameters of Formula 1 above.

When the base station receives the PUSCH, it can measure the RSRP or the signal to interference plus noise ratio (SINR) of the PUSCH. When the base station schedules the next PUSCH transmission, it can determine the TPC of this PUSCH transmission based on the previously measured RSRP/SINR, combined with the RB or MCS scheduled by the current PUSCH, and indicate the TPC in the DCI used to schedule the PUSCH. . The TPC can indicate the amount of power adjustment, and the terminal device can determine the PUSCH transmit power according to the TPC.

For some terminal equipment, there may be inconsistencies between the transmitting and receiving antennas, that is, the number of receiving antennas and the number of transmitting antennas may be different, which will make the downlink path loss measured by the terminal equipment according to the downlink reference signal and the terminal The uplink path loss of the device is inconsistent. For example, if the terminal device has more downlink antennas (i.e., receiving antennas) than uplink antennas (i.e., transmitting antennas), the downlink beam pairing gain of the terminal device will be greater than the uplink beam pairing gain, and the terminal device will use the downlink reference signal The measured downlink path loss will be less than the uplink path loss of the terminal device. If the terminal device uses the downlink path loss as the uplink path loss for uplink power control, the uplink transmit power calculated by the terminal may be too small; for example, if the terminal device If the downlink antenna is less than the uplink antenna, the downlink beam pair forming gain of the terminal device is less than the uplink beam pair forming gain, and the downlink path loss measured by the terminal device according to the downlink reference signal will be greater than the uplink path loss of the terminal device. If the downlink path loss is used as the uplink path loss for uplink power control, the uplink transmit power calculated by the terminal may be too large. It can be seen that if the downlink path loss measured by the terminal equipment is used as the uplink path loss, the result of the uplink power control may be inaccurate because the downlink path loss and the uplink path loss are actually inconsistent.

When calculating the downlink path loss, the terminal device needs to use the RSRP measured on the downlink reference signal. However, the current terminal equipment strives for low cost, such as machine-type communication (MTC) terminal equipment, the number of antennas and bandwidth may be reduced. Such a terminal device measures the downlink reference signal, and the obtained RSRP may be inaccurate, resulting in inaccurate downlink path loss. Using such a downlink path loss as an uplink path loss for uplink power control, obviously the result of uplink power control will also be inaccurate.

In addition, according to the above introduction, the terminal needs to maintain multiple sets of downlink reference signal measurements at the same time, that is, the terminal device needs to measure the downlink reference signals from multiple downlink beams. This leads to higher implementation complexity of the terminal equipment and higher power consumption.

In view of this, the technical solutions of the embodiments of the present application are provided. In the embodiment of this application, the uplink path loss of the terminal device can be determined by the network device, for example, called the first uplink path loss. The network device sends the first uplink path loss to the terminal device, and the terminal device can use the first uplink path loss. Loss for uplink power control. There is no need for the terminal device to measure the downlink reference signal by itself to obtain the uplink path loss. Even if the performance of the terminal device is limited or the transceiver antennas of the terminal device are inconsistent, the accuracy of the obtained uplink path loss will not be affected. Moreover, the terminal device does not need to perform measurement, and the power consumption of the terminal device can be saved, and the implementation complexity of the terminal device can be reduced. This enables the application scope of the embodiment of the present application to be expanded to more terminal devices, such as MTC terminal devices. The technical solutions of the embodiments of the present application can be applied.

The technical solutions provided by the embodiments of this application can be applied to the 4th generation (4G) mobile communication technology (the 4th generation, 4G) system, such as the LTE system, or can be applied to the 5G system, such as the NR system, or can also be applied to the next generation of mobile communications. System or other similar communication systems, there are no specific restrictions. In addition, in the introduction process of the embodiment of this application, the above downlink process is taken as an example. In fact, the technical solution provided in the embodiment of this application can also be applied to a sidelink (SL). For example, one terminal device is reporting to another terminal. When the device transmits side-line channels (for example, physical side-link shared channel (PSSCH) or physical side-line control channel (pysical sidelink control channel, PSCCH), etc.) or side-line signals, it can also use the one provided in the embodiments of this application Technical solution for power control. For example, the technical solutions provided by the embodiments of this application can be applied to device-to-device (D2D) scenarios, can be NR D2D scenarios, LTE D2D scenarios, etc., or can be applied to vehicle-to-everything (vehicle to everything) scenarios. everything (V2X) scenario, it can be NR V2X scenario or LTE V2X scenario, etc., for example, it can be applied to the Internet of Vehicles, such as V2X, LTE-V, vehicle-to-vehicle (V2V), etc., or can be used for Intelligent driving, intelligent networked vehicles and other fields.

Please refer to FIG. 2, which is an application scenario of an embodiment of this application. Figure 2 includes network equipment and terminal equipment. The network device and the terminal device can communicate. For example, when the terminal device sends an uplink signal or an uplink channel to the network device, the technical solution provided in the embodiments of the present application can be used to perform power control.

The network equipment, for example, works in an evolved UMTS terrestrial radio access (E-UTRA) system, or works in an NR system, or works in a next-generation communication system or other communication systems.

The network device in FIG. 2 is, for example, a base station. Among them, network devices correspond to different devices in different systems. For example, in a 4G system, they can correspond to an eNB, and in a 5G system, they correspond to an access network device in 5G, such as gNB. Of course, the technical solutions provided by the embodiments of the present application can also be applied to future mobile communication systems. Therefore, the network equipment in FIG. 2 can also correspond to the network equipment in the future mobile communication system. Figure 2 takes the network equipment as a base station as an example. In fact, referring to the previous introduction, the network equipment can also be equipment such as RSU. In addition, the terminal device in FIG. 2 uses a mobile phone as an example. In fact, according to the introduction to the terminal device in the foregoing, the terminal device in the embodiment of the present application is not limited to the mobile phone.

The following describes the method provided by the embodiment of the present application with reference to the accompanying drawings.

The embodiment of the present application provides a method for determining the uplink power. Please refer to FIG. 3, which is a flowchart of the method. In the following introduction process, the application of this method to the network architecture shown in FIG. 2 is taken as an example.

For ease of introduction, in the following, the method executed by the network device and the terminal device is taken as an example. Because this embodiment is applied to the network architecture shown in FIG. 2 as an example, the network device described in the following may be the network device in the network architecture shown in FIG. 2, and the terminal device described in the following may be Figure 2 shows the terminal equipment in the network architecture.

S31. The terminal device sends second uplink information to the network device, and the network device receives the second uplink information from the terminal device.

The second uplink information may include a second uplink signal, or a second uplink channel, or a second uplink signal and a second uplink channel. Wherein, the second uplink signal includes, for example, SRS, or may also include other uplink signals. The second uplink channel includes, for example, one or two of the PUSCH or a physical uplink control channel (PUCCH), or may also include other uplink channels.

In the embodiment of the present application, it is mainly taken as an example that the second uplink information is PUSCH.

S32. The network device determines the first uplink path loss of the terminal device according to the second uplink information.

For example, the network device may measure the second uplink information to obtain the measurement result. After the measurement result is obtained, the first uplink path loss of the end device can be determined according to the measurement result.

After receiving the second uplink information, the network device may measure the second uplink information, and the obtained measurement result includes, for example, one or more of RSRP, reference signal receiving quality (RSRQ), or SINR. For example, the measurement result includes RSRP, and the network device can filter the RSRP obtained this time to obtain the filtered RSRP. If the terminal device sends uplink information to the network device multiple times (for example, the terminal device may periodically send uplink information to the network device, or it may also send uplink information to the network device aperiodically but multiple times), for example, the second uplink information is only the terminal device If one of the uplink information is sent, the network device can filter the RSRP obtained by this measurement and the RSRP obtained by the previous measurement together to obtain the filtered RSRP. The RSRP measured before is the RSRP obtained by the network equipment measuring the uplink information previously sent by the terminal equipment.

After the network device obtains the measurement result, it can determine the first uplink path loss of the terminal device according to the measurement result. The first uplink path loss of the terminal device may refer to the path loss of the uplink of the terminal device. While the network device determines the first uplink path loss of the terminal device according to the measurement result, one implementation may be that the network device determines the first uplink path loss according to the measurement result and the second transmission power. The second transmission power is, for example, the power at which the terminal device sends the second uplink information.

For example, the network device determines the first uplink path loss according to the measurement result and the second transmit power, which can be expressed by the following relationship:

PL=txsignalpower-higher filte RSRP (Formula 3)

In formula 3, PL represents the uplink path loss, txsignalpower represents the second transmit power, and higher filte RSRP represents the RSRP filtered by the higher layer, that is, the information obtained after the network device filters the measurement results (such as RSRP) . The higher filte RSRP may be obtained after the network device filters the RSRP obtained in this measurement, or may also be obtained after the network device filters the RSRP obtained in this measurement and the RSRP obtained in the previous measurement.

It can be seen that as long as the network device obtains the measurement result and obtains the second transmit power, the first uplink path loss of the terminal device can be determined. This involves the network device obtaining the second transmit power. The following describes a way for the network device to obtain the second transmit power.

For example, if a terminal device is also triggered to report PHR when sending PUSCH, the terminal device can send PHR to the base station while sending PUSCH. For example, the PHR can be sent to the network device through MAC CE, and the network device can receive information from the terminal device through MAC CE. PHR. In the embodiment of this application, the second uplink information is the PUSCH as an example. The PHR corresponding to the PUSCH is a PHR of type 1. Therefore, the terminal device sends a PHR of type 1 to the network device, and the network device receives a PHR of type 1 from the terminal device. PHR.

Since the PHR indicates the power remaining after the terminal device sends the PUSCH this time, the network device can reverse the PHR from the terminal device to calculate the actual transmission power of the terminal device this PUSCH, that is, the second transmission power. For example, the second transmission power may satisfy the following relationship:

txsignalpower=P _max –max(PHR,0) (Equation 4)

In formula 4, max(x,y) means to take the maximum value of x and y. This is because the PHR may be a negative value. At this time, it means that the terminal device has reached the maximum transmission power and the power is limited. P _max represents the maximum transmit power of the terminal device. Among them, the terminal device may send the capability information of the terminal device to the network device in advance. For example, when the terminal device is connected to the network device, it may send the capability information of the terminal device to the network device. The capability information of the terminal device may include P _max , so that the network The device can obtain P _max . According to formula 4, the second transmit power can be obtained.

Of course, formula 4 is just an example of calculating the second transmission power corresponding to the PUSCH by the network device. If the second uplink information is SRS or PUCCH, the network device can also calculate the corresponding second transmission power in a corresponding manner. Since the type of PHR corresponding to information such as SRS or PUCCH and the type of PHR corresponding to PUSCH may be different, for example, the type of PHR corresponding to SRS is type 3 PHR, etc., so the PHR reported by the terminal device will be different, and the network device is calculating The formula used for the second transmit power may also be different. However, the way to obtain the uplink path loss of the terminal device is similar, that is, no matter what kind of information the second uplink information includes, the network device can use the second transmission power corresponding to the second uplink information and the measurement of the second uplink information. The result is the uplink path loss of the terminal equipment.

In addition, the concept of beams is introduced in the NR system. Terminal devices can send uplink information to network devices through different beams. The uplink path losses corresponding to different beams may be the same or different.

In the embodiment of the present application, the network device may calculate only one uplink path loss for the terminal device, that is, the uplink path loss may be applicable to all beams of the terminal device. This method is equivalent to not considering the beam, and is more suitable for terminal equipment in a static state or low-speed moving state, or it can also be applied to a communication system that does not consider a beam, such as an LTE system, or even for an NR system that introduces a beam , And the terminal equipment is moving at a high speed, this method can also be applied. Because the network device only needs to calculate one uplink path loss in this way, the implementation is relatively simple for the network device, which helps to reduce the burden on the network device.

Alternatively, in the embodiment of the present application, the network device may also calculate multiple uplink path losses of the terminal device. For example, the beam and the uplink path loss may have a one-to-one correspondence. For example, for a terminal device, uplink information can be sent to the network device through multiple beams, and the network device can receive uplink information from multiple beams. The network device can determine the uplink path loss corresponding to the multiple beams respectively according to the uplink information from the multiple beams. For the manner of determining the uplink path loss by the network device, refer to the introduction of S32. In this manner, the network equipment can respectively determine the uplink path loss corresponding to different beams, so that the determined uplink path loss is more accurate, so that the uplink power control performed according to the uplink path loss can be more accurate.

In the embodiment of the present application, the network device measures the second uplink information from the terminal device to obtain the uplink path loss of the terminal device, and the obtained uplink path loss is relatively accurate.

Of course, the network device obtains the first uplink path loss of the terminal device by measuring the second uplink information, which is only a way for the network device to obtain the first uplink path loss. Alternatively, the network device may also use other methods to obtain the first uplink path loss, which is not specifically limited.

Among them, S31 and S32 are both optional steps and are not required to be performed. Therefore, in FIG. 3, the arrow indicating S31 and the box indicating S32 are drawn as dashed lines.

S33. The network device sends the first instruction information to the terminal device, and the terminal device receives the first instruction information from the network device. The first indication information may indicate the first uplink path loss of the terminal device, and the first uplink path loss is also obtained by the network device in S32. After receiving the first indication information, the terminal device can determine the first uplink path loss of the terminal device according to the first indication information.

For example, the first indication information may be carried in high-level signaling, such as radio resource control (RRC) signaling or MAC CE, etc.; or, the first indication information may also be carried in dynamic signaling, such as DCI.

For example, if the channel changes quickly, the uplink path loss may also change quickly, and the first indication information may be carried in the DCI. Through dynamic signaling, the first uplink path loss can be notified to the terminal device in a relatively timely manner, so that the uplink power control of the terminal device can adapt to channel changes. For example, an indication field may be added to the DCI. For example, the indication field may be called a pathloss indication field. Of course, the indication field may also have other names. The indication field may include the first uplink path loss of the terminal device. Alternatively, an existing domain in the DCI can also be reused to carry the first uplink path loss of the terminal device. If the first indication information is DCI, DCI may be used to schedule data (uplink data or downlink data) for the terminal device. Then the network device can include the uplink path loss of the terminal device (for example, the first uplink path loss) in the DCI every time data is scheduled for the terminal device (that is, each time the DCI for scheduling data is sent to the terminal device). Send it to the terminal device.

For some scenarios, the channel changes slowly, such as the massive machine type of communication (mMTC) video surveillance in the NR system, where the position of the camera is fixed, so the channel changes slowly. If the channel changes slowly, the uplink path loss may also change slowly. Therefore, in this case, consider notifying the terminal equipment of the uplink path loss through high-level signaling. For example, the network equipment may periodically or semi-periodically notify the terminal equipment of the first uplink path loss through high-level signaling. The command is, for example, RRC signaling or MAC CE. This situation does not need to be notified by dynamic signaling, and the number of times the network device sends high-level signaling to the terminal device is also less (for example, it is sent periodically or semi-periodicly), which helps to save signaling overhead.

In addition, the first uplink path loss indicated by the first indication information may be an actual value of the first uplink path loss, and the value may be an integer type or a floating point type. Alternatively, the first uplink path loss indicated by the first indication information may also be an index corresponding to the actual value of the first uplink path loss. For example, multiple value ranges of the uplink path loss can be predefined, and each value range corresponds to an index. The corresponding relationship between the index and the value range can be configured by the network device, or specified by agreement, etc. The corresponding relationship is for Both network equipment and terminal equipment are known. Then, after the network device obtains the first uplink path loss of the terminal device, it can determine the value range corresponding to the first uplink path loss according to the obtained first uplink path loss, thereby determining the index of the value range. Then, the network device only needs to include the index in the first indication information. After receiving the first indication information, the terminal device can determine the value range of the first uplink path loss according to the index and the corresponding relationship between the index and the value range. After obtaining the value range of the first uplink path loss, the terminal device may determine the final first uplink path loss according to the value range. For example, the terminal device may select any value from the value range as the first uplink path loss, or may select the maximum, minimum, or middle value of the value range as the first uplink path loss, or the terminal device may also Other methods may be used to obtain the final first uplink path loss according to the value range.

For example, you can refer to Table 1, which is an example of a correspondence between indexes and value ranges.

Table 1

index Value range of uplink path loss (dB) 0 (0,1) 1 (1,2) 2 (2,3) … …

Taking Table 1 as an example, if the first uplink path loss obtained by the network device is 0.5, the network device can determine that the value range corresponding to the first uplink path loss is (0,1], and the index of the value range is 0. The network device sends the first indication information to the terminal device, and the index included in the first indication information is 0. After the terminal device receives the first indication information, it can determine that the value range of the first uplink path loss is ( 0,1], so that the terminal device can determine the final first uplink path loss according to the value range (0,1]. For example, the terminal device can randomly select a value from (0,1) as the first uplink path loss, For example, the terminal device selects 0.7 as the first uplink path loss; or, the terminal device can select the maximum, minimum, or intermediate value from (0,1] as the first uplink path loss. For example, the terminal device selects the maximum value, that is, the terminal The device selects 1 as the first uplink path loss. Of course, Table 1 is only an example, and the correspondence between the specific index and the value range is not limited to this.

After obtaining the first uplink path loss of the terminal device, the network device may send the first uplink path loss to the terminal device. If the network device obtains multiple uplink path losses corresponding to multiple beams of the terminal device (for example, the number of first uplink path losses is greater than 1), then the network device can send all the obtained uplink path losses to the terminal Device (that is, the first indication information may indicate all the uplink path loss obtained by the network device), or only a part of the obtained uplink path loss may be sent to the terminal device (that is, the first indication information may indicate the part of the uplink path loss obtained by the network device) Uplink path loss). For example, if the signaling used to carry the first indication information is used to schedule uplink data for the terminal device, for example, the first indication information is carried in the DCI, then the network device may only use the beam for the terminal device to send the uplink data. The corresponding uplink path loss is sent to the terminal device without sending the uplink path loss corresponding to beams other than the beam corresponding to the uplink data to the terminal device. Because the terminal device may only need to use the uplink path loss this time, the uplink path loss corresponding to other beams will not be used temporarily, so the network device does not need to send the uplink path loss corresponding to other beams to the terminal device, which can meet the requirements of the terminal device. The use requirements of the, also help to reduce the overhead of the first indication information. Or, if the signaling carrying the first indication information is not used to schedule uplink data for the terminal device, for example, the first indication information is carried in RRC signaling or MAC CE, or the first indication information is carried in DCI, but the DCI is used to schedule downlink data for the terminal device, or if it is not used to schedule data, the network device can also send all the obtained uplink path losses to the terminal device. When the terminal device needs to perform uplink power control, it can select the uplink path loss corresponding to the beam from the obtained uplink path loss according to the beam used by the terminal device. The beam used by the terminal device mentioned here refers to the beam corresponding to the uplink power control that the terminal device needs to perform, or in other words, the beam used to transmit the uplink data corresponding to the uplink power that the terminal device needs to calculate.

For example, if the network device wants to send multiple uplink path losses to the terminal device, the first indication information may indicate the specific value of each uplink path loss in the multiple uplink path losses, for example, an integer value or a floating point value. Value; or, the first indication information may include one or more indexes, wherein each of the multiple uplink path losses may correspond to an index included in the first indication information.

Or, if the network device obtains only one uplink path loss for the terminal device, the uplink path loss (that is, the number of the first uplink path loss is 1) can be sent to the terminal device. In this case, no matter what kind of signaling the first indication information is, the network device can send the uplink path loss to the terminal device through the first indication information.

In addition to the uplink path loss, the network equipment can also calculate the TPC for this second uplink information transmission. Generally speaking, the calculation of TPC can also consider the measurement results of the historically received uplink information from the terminal device by the network device, as well as the MCS and resource allocation for this scheduling of the second uplink information transmission. Taking the PUSCH as the second uplink information as an example, in general, the calculation of TPC can also consider the historically received PUSCH measurement results from the terminal device by the network device, as well as the MCS and resource allocation for this scheduled PUSCH transmission. .

After the network device determines the TPC, it can send the TPC to the terminal device, and the terminal device receives the TPC from the network device. For example, the network device may send the TPC and the first uplink path loss to the terminal device together, that is, the network device may transmit the TPC and the first uplink path loss in the same signaling to the terminal device. For example, the TPC and the first indication information can be carried in different domains of the DCI. Alternatively, the network device may also send the TPC and the first uplink path loss to the terminal device respectively, that is, the network device may carry the TPC and the first indication information in different signaling and send it to the terminal device. For example, the first indication information is carried in the first signaling, and the TPC is carried in the third signaling. For example, the third signaling is DCI, and the first signaling is RRC or MAC CE; or, the third signaling is DCI, and the first signaling is also DCI, but the two DCIs are not the same. The network device may send the first signaling first and then the third signaling, or may send the third signaling first and then the first signaling, or may send the first signaling and the third signaling together.

S34. The terminal device determines the first transmit power of the first uplink information according to the first uplink path loss. The first uplink information may include the first uplink signal, or the first uplink channel, or the first uplink signal and the first uplink channel.

Wherein, the first uplink signal includes, for example, SRS, or may also include other uplink signals. The first uplink channel includes, for example, one or two of PUSCH or PUCCH, or may also include other uplink channels.

After the terminal device receives the first uplink path loss from the network device, when subsequently sending uplink information to the network device, it can perform uplink power control based on the first uplink path loss, that is, calculate the subsequent transmission based on the first uplink path loss. The transmit power of uplink information. Among them, the first transmission power refers to the transmission power of the first uplink information. The reason why it is called the first transmission power is to distinguish it from the second transmission power mentioned above.

As introduced in S33, the network device can also send TPC to the terminal device. Then, the terminal device determines the first transmit power of the first uplink information according to the first uplink path loss. One way may be that the terminal device determines the first transmission power of the first uplink information according to the first uplink path loss. The loss and the TPC determine the first transmit power. If the first uplink information is PUSCH, the method for the terminal device to calculate the first transmit power can refer to the formula 1 above.

Or, if the first uplink information is PUCCH, the first transmit power calculated by the terminal device may satisfy the following relationship, or in other words, the terminal device may use the following relationship to calculate the first transmit power of the PUCCH, and the unit of the first transmit power is dBm :

表示PUCCH所映射至的RB数。Δ _{F_PUCCH}(F)表示与PUCCH格式相关的修正量，一般由基站通过高层信令配置给终端设备。g _b,f,c(i,l)表示PUCCH的功率控制调整状态值，PUCCH只支持累积式的闭环功率控制，即

其中δ为网络设备下发的PUCCH的TPC指示的。关于公式5的其他参数，可参考前文对于其他公式的介绍。 In formula 5, _{PO_PUCCH, b, f, c (qu)} represents the expected received power of the PUCCH configured by the base station for the terminal device.

Indicates the number of RBs to which PUCCH is mapped. _{ΔF_PUCCH} (F) represents the correction amount related to the PUCCH format, which is generally configured by the base station to the terminal device through high-level signaling. g _b,f,c (i,l) represents the power control adjustment state value of PUCCH, PUCCH only supports cumulative closed-loop power control, that is

Where δ is the TPC indication of the PUCCH issued by the network device. For other parameters of formula 5, please refer to the introduction of other formulas in the previous section.

Or, if the first uplink information is SRS, the first transmit power calculated by the terminal device may satisfy the following relationship, or in other words, the terminal device may use the following relationship to calculate the first transmit power of the SRS, and the unit of the first transmit power is dBm :

其中δ为网络设备下发的SRS的TPC指示的。关于公式6的其他参数，可参考前文对于其他公式的介绍。 In formula 6, P _{O_SRS, b, f, c} (q _s ) represents the expected received power of the SRS configured by the network device for the terminal device. M _{SRS, b, f, c} (i) represents the number of RBs to which the SRS is mapped. α _SRS,b,f,c (q _s ) represents the partial path loss compensation factor configured by the network equipment for the terminal equipment, and the value range is (0,1]. h _b,f,c (i,l) represents the power of the SRS Adjust the state value. When the network equipment is configured to use the same power control adjustment state for SRS and PUSCH transmission, h _b,f,c (i,l)=f _b,f,c (i,l),f _{b,f ,c} (i,l) is the power adjustment state of PUSCH; when the network device does not transmit PUSCH to the terminal device or configures an independent power control adjustment state for the terminal device,

Where δ is indicated by the TPC of the SRS issued by the network device. For other parameters of formula 6, please refer to the introduction of other formulas in the previous section.

S35. The terminal device sends the first uplink information according to the first transmit power, and the network device receives the first uplink information from the terminal device.

After obtaining the first transmission power, the terminal device can send the first uplink information according to the first transmission power.

As an optional implementation manner, the uplink path loss of the terminal device is estimated by the network device, which can be regarded as a mechanism. Whether this mechanism is to be implemented can be determined by the network device. For example, when the terminal device frequently sends uplink information to the network device, the network device can determine that the network device estimates the uplink path loss of the terminal device, or the network device learns that the terminal device’s performance is poor according to the capability information of the terminal device. The uplink path loss measured by the terminal device itself may not be accurate enough, and the network device can determine that the network device can estimate the uplink path loss of the terminal device, and so on. For example, the network device may send second signaling to the terminal device, and the second signaling may be used to instruct the terminal device to apply the uplink path loss from the network device to determine the uplink transmit power, or to instruct the terminal device not to apply the uplink path loss from the network device Determine the uplink transmit power, that is, instruct the terminal device whether the network device estimates the uplink path loss of the terminal device. After the terminal device receives the second signaling from the network device, if the second signaling instructs to apply the uplink path loss from the network device to determine the uplink transmit power, the terminal device can do not need to measure and estimate the uplink path loss by itself, but only needs to receive from The uplink path loss of the network equipment is sufficient. Or, if the second signaling indicates that the uplink path loss from the network device is not used to determine the uplink transmit power, the terminal device can measure and estimate the uplink path loss by itself. For the method of the terminal device to measure and estimate the uplink path loss by itself, please refer to the previous article. Introduction. In this way, different strategies can be adopted for different scenarios, making the way to obtain the uplink path loss more reasonable.

In the embodiment of the present application, since the network device has notified the first uplink path loss required to calculate the uplink transmit power, the terminal device may no longer perform downlink reference signal measurement or reduce the estimation of uplink path loss based on the measurement of the downlink reference signal. Frequency, reduce the power consumption of terminal equipment. For example, when the terminal device does not receive the uplink path loss from the network device for a long time, it can perform a downlink reference signal measurement to obtain the measurement result, and use the uplink path loss obtained according to the measurement result to calculate the uplink transmit power. When the network device frequently sends the uplink path loss to the terminal device, the terminal device can no longer perform downlink reference signal measurement, and there is no need to estimate the uplink path loss, which can reduce the complexity of the terminal device.

The device used to implement the foregoing method in the embodiments of the present application will be described below in conjunction with the accompanying drawings. Therefore, all the above content can be used in the subsequent embodiments, and the repeated content will not be repeated.

FIG. 4 is a schematic block diagram of a communication device 400 provided by an embodiment of the application. Illustratively, the communication device 400 is a terminal device 400, for example.

The terminal device 400 includes a processing module 410 and a transceiver module 420. Exemplarily, the terminal device 400 may be a network device, or a chip applied in a terminal device or other combination devices, components, etc. having the above-mentioned terminal device functions. When the terminal device 400 is a terminal device, the transceiver module 420 may be a transceiver, the transceiver may include an antenna and a radio frequency circuit, etc., and the processing module 410 may be a processor, such as a baseband processor. The baseband processor may include one or more Central processing unit (central processing unit, CPU). When the terminal device 400 is a component having the above-mentioned terminal device function, the transceiver module 420 may be a radio frequency unit, and the processing module 410 may be a processor, such as a baseband processor. When the terminal device 400 is a chip system, the transceiver module 420 may be an input/output interface of a chip (such as a baseband chip), and the processing module 410 may be a processor of the chip system, and may include one or more central processing units. It should be understood that the processing module 410 in the embodiment of the present application may be implemented by a processor or a processor-related circuit component, and the transceiver module 420 may be implemented by a transceiver or a transceiver-related circuit component.

For example, the processing module 410 may be used to perform all operations other than the transceiving operation performed by the terminal device in the embodiment shown in FIG. 3, such as S34, and/or other processes used to support the technology described herein. The transceiver module 420 may be used to perform all the receiving operations performed by the terminal device in the embodiment shown in FIG. 3, such as S31, S33, and S35, and/or other processes used to support the technology described herein.

In addition, the transceiver module 420 may be a functional module that can perform both sending and receiving operations. For example, the transceiver module 420 may be used to perform all the sending operations performed by the terminal device in the embodiment shown in FIG. 3 And receiving operations, for example, when performing a sending operation, the transceiver module 420 can be considered as a sending module, and when performing a receiving operation, the transceiver module 420 can be considered as a receiving module; alternatively, the transceiver module 420 can also be two functional modules, The transceiver module can be regarded as a collective term for these two functional modules. The two functional modules are respectively a sending module and a receiving module. The sending module is used to complete the sending operation. For example, the sending module can be used to perform any tasks in the embodiment shown in FIG. 3. In one embodiment, for all the sending operations performed by the terminal device, the receiving module is used to complete the receiving operation. For example, the receiving module may be used to perform all the receiving operations performed by the terminal device in the embodiment shown in FIG. 3.

Wherein, the transceiver module 420 is configured to receive first indication information from a network device, where the first indication information is used to indicate a first uplink path loss;

The processing module 410 is configured to determine the first transmit power of the first uplink information according to the first uplink path loss, where the first uplink information includes a first uplink signal or a first uplink channel;

The transceiver module 420 is further configured to send the first uplink information according to the first transmit power.

As an optional implementation manner, the first indication information is included in DCI, MAC CE, or RRC signaling.

As an optional implementation manner, the transceiver module 420 is further configured to receive TPC from the network device.

As an optional implementation manner, the processing module 410 is configured to determine the first transmit power of the first uplink information according to the first uplink path loss in the following manner:

The first transmit power is determined according to the first uplink path loss and the TPC.

As an optional implementation manner, the transceiver module 420 is further configured to send second uplink information to the network device, where the second uplink information is used to determine the uplink path loss, and the second uplink information includes the first Two upstream signals or second upstream channels.

As an optional implementation manner, the transceiver module 420 is further configured to send a PHR to the network device, where the PHR is used to determine the transmit power of the second uplink information.

As an optional implementation manner, the first uplink signal is SRS, and the first uplink channel is PUSCH or PUCCH.

As an optional implementation manner, the transceiver module 420 is further configured to receive second signaling from the network device, where the second signaling is used to instruct to apply the uplink path loss from the network device to determine the uplink transmission power.

FIG. 5 is a schematic block diagram of a communication device 500 according to an embodiment of the application. Exemplarily, the communication apparatus 500 is, for example, the first network device 500.

The network device 500 includes a processing module 510 and a transceiver module 520. Exemplarily, the network device 500 may be a network device, or may be a chip applied to the network device or other combination devices, components, etc. having the above-mentioned network device functions. When the network device 500 is a network device, the transceiver module 520 may be a transceiver, the transceiver may include an antenna and a radio frequency circuit, etc., the processing module 510 may be a processor, and the processor may include one or more CPUs. When the network device 500 is a component having the above-mentioned network device function, the transceiver module 520 may be a radio frequency unit, and the processing module 510 may be a processor, such as a baseband processor. When the network device 500 is a chip system, the transceiver module 520 may be an input/output interface of a chip (such as a baseband chip), and the processing module 510 may be a processor of the chip system, and may include one or more central processing units. It should be understood that the processing module 510 in the embodiment of the present application may be implemented by a processor or a processor-related circuit component, and the transceiver module 520 may be implemented by a transceiver or a transceiver-related circuit component.

For example, the processing module 510 may be used to perform all operations other than the transceiving operation performed by the network device in the embodiment shown in FIG. 3, such as S32, and/or other processes used to support the technology described herein. The transceiver module 520 may be used to perform all the receiving operations performed by the network device in the embodiment shown in FIG. 3, such as S31, S33, and S35, and/or other processes used to support the technology described herein.

In addition, the transceiver module 520 may be a functional module that can perform both sending and receiving operations. For example, the transceiver module 520 may be used to perform all the sending operations performed by the network device in the embodiment shown in FIG. 3 And receiving operation, for example, when performing a sending operation, the transceiver module 520 can be considered as a sending module, and when performing a receiving operation, the transceiver module 520 can be considered as a receiving module; alternatively, the transceiver module 520 can also be two functional modules, The transceiver module can be regarded as a collective term for these two functional modules. The two functional modules are respectively a sending module and a receiving module. The sending module is used to complete the sending operation. For all the sending operations performed by the network device, the receiving module is used to complete the receiving operation. For example, the receiving module may be used to perform all the receiving operations performed by the network device in the embodiment shown in FIG. 3.

Wherein, the transceiver module 520 is configured to receive the second uplink information from the terminal device;

The processing module 510 is configured to determine the first uplink path loss of the terminal device according to the second uplink information, where the first uplink path loss is the uplink path loss of the terminal device;

The transceiver module 520 is further configured to send first indication information to the terminal device, where the first indication information is used to indicate a first uplink path loss, and the first uplink path loss is used to determine the uplink transmission of the terminal device. power.

As an optional implementation manner, the processing module 510 is configured to determine the first uplink path loss of the terminal device according to the second uplink information in the following manner:

The first uplink path loss is determined according to the measurement result and the second transmission power, where the second transmission power is the power at which the terminal device sends the second uplink information, and the measurement result is that the network device 500 responds to the first uplink information. 2. Uplink information is measured.

As an optional implementation manner, the second transmission power is determined according to the PHR from the terminal device and the maximum transmission power of the terminal device.

As an optional implementation manner, the first indication information is included in DCI, MAC CE, or RRC signaling.

As an optional implementation,

The processing module 510 is further configured to determine a TPC corresponding to the second uplink information, where the TPC is used to determine the transmit power of the first uplink information;

The transceiver module 520 is also used to send the TPC to the terminal device.

As an optional implementation manner, the transceiver module 520 is further configured to receive the first uplink information from the terminal device, where the first uplink information includes a first uplink signal or a first uplink channel.

As an optional implementation manner, the second uplink signal is SRS, and the second uplink channel is PUSCH or PUCCH.

As an optional implementation manner, the transceiver module 520 is further configured to send second signaling to the terminal device, where the second signaling is used to instruct the terminal device to apply the uplink path loss determination from the network device 500 Uplink transmit power.

The embodiment of the present application also provides a communication device, and the communication device may be a terminal device or a circuit. The communication device can be used to perform the actions performed by the terminal device in the foregoing method embodiments.

When the communication device is a terminal device, FIG. 6 shows a simplified schematic diagram of the structure of the terminal device. It is easy to understand and easy to illustrate. In Fig. 6, the terminal device uses a mobile phone as an example. As shown in Figure 6, the terminal equipment includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device. The processor is mainly used to process the communication protocol and communication data, and to control the terminal device, execute the software program, and process the data of the software program. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of description, only one memory and processor are shown in FIG. 6. In an actual terminal device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.

In the embodiments of the present application, the antenna and radio frequency circuit with transceiving functions can be regarded as the transceiving unit of the terminal device (the transceiving unit can be a functional unit that can realize the sending and receiving functions; or the transceiving unit can also be It includes two functional units, namely a receiving unit capable of realizing the receiving function and a transmitting unit capable of realizing the transmitting function), and the processor with the processing function is regarded as the processing unit of the terminal device. As shown in FIG. 6, the terminal device includes a transceiving unit 610 and a processing unit 620. The transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, and so on. The processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on. Optionally, the device for implementing the receiving function in the transceiving unit 610 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiving unit 610 can be regarded as the sending unit, that is, the transceiving unit 610 includes a receiving unit and a sending unit. The transceiver unit may sometimes be referred to as a transceiver, a transceiver, or a transceiver circuit. The receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit. The transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.

It should be understood that the transceiving unit 610 is used to perform sending and receiving operations on the terminal device side in the foregoing method embodiment, and the processing unit 620 is used to perform other operations on the terminal device in the foregoing method embodiment except for the transceiving operation.

For example, in an implementation manner, the processing unit 620 may be used to perform all operations performed by the terminal device in the embodiment shown in FIG. 3 except for the transceiving operations, such as S34, and/or to support the operations described herein. Other processes of the described technology. The transceiver unit 610 may be used to perform all the receiving operations performed by the terminal device in the embodiment shown in FIG. 3, such as S31, S33, and S35, and/or other processes used to support the technology described herein.

When the communication device is a chip-type device or circuit, the device may include a transceiver unit and a processing unit. Wherein, the transceiving unit may be an input/output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit.

When the communication device in this embodiment is a terminal device, the device shown in FIG. 7 can be referred to. As an example, the device can perform functions similar to the processing module 810 in FIG. 8. In FIG. 7, the device includes a processor 710, a data sending processor 720, and a data receiving processor 730. The processing module 410 in the foregoing embodiment may be the processor 710 in FIG. 7 and complete corresponding functions; the transceiving module 420 in the foregoing embodiment may be the sending data processor 720 in FIG. 7 and/or receiving data Processor 730 and complete corresponding functions. Although FIG. 7 shows a channel encoder and a channel decoder, it can be understood that these modules do not constitute a restrictive description of this embodiment, and are only illustrative.

Fig. 8 shows another form of this embodiment. The processing device 800 includes modules such as a modulation subsystem, a central processing subsystem, and a peripheral subsystem. The communication device in this embodiment can be used as the modulation subsystem therein. Specifically, the modulation subsystem may include a processor 803 and an interface 804. Among them, the processor 803 completes the function of the aforementioned processing module 810, and the interface 804 completes the function of the aforementioned transceiver module 820. As another variation, the modulation subsystem includes a memory 806, a processor 803, and a program stored in the memory 806 and running on the processor. The processor 803 executes the program to implement the terminal device side in the above method embodiment. Methods. It should be noted that the memory 806 can be non-volatile or volatile, and its location can be located inside the modulation subsystem or in the processing device 800, as long as the memory 806 can be connected to the The processor 803 is sufficient.

When the device in the embodiment of the present application is a network device, the device may be as shown in FIG. 9. The device 900 includes one or more radio frequency units, such as a remote radio unit (RRU) 910 and one or more baseband units (BBU) (also referred to as digital units, digital units, DU) 920 . The RRU 910 may be referred to as a transceiver module, and the transceiver module may include a transmitting module and a receiving module, or the transceiver module may be a module capable of transmitting and receiving functions. The transceiver module may correspond to the transceiver module 520 in FIG. 5. Optionally, the transceiver module may also be called a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 911 and a radio frequency unit 912. The RRU 910 part is mainly used for sending and receiving of radio frequency signals and conversion of radio frequency signals and baseband signals, for example, for sending instruction information to terminal devices. The 910 part of the BBU is mainly used for baseband processing, control of the base station, and so on. The RRU 910 and the BBU 920 may be physically set together, or may be physically separated, that is, a distributed base station.

The BBU 920 is the control center of the base station, and may also be called a processing module, which may correspond to the processing module 510 in FIG. 5, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading. For example, the BBU (processing module) may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment, for example, to generate the foregoing indication information.

In an example, the BBU 920 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network with a single access standard (such as an LTE network), or support different access standards. Wireless access network (such as LTE network, 5G network or other networks). The BBU 920 further includes a memory 921 and a processor 922. The memory 921 is used to store necessary instructions and data. The processor 922 is configured to control the base station to perform necessary actions, for example, to control the base station to execute the operation procedure of the network device in the foregoing method embodiment. The memory 921 and the processor 922 may serve one or more boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.

The embodiment of the present application provides a communication system. The communication system may include the terminal device involved in the embodiment shown in FIG. 3 and the network device involved in the embodiment shown in FIG. 3. The terminal device is, for example, the terminal device 400 in FIG. 4. The network device is, for example, the network device 500 in FIG. 5.

The embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a computer, the computer can implement the method shown in FIG. 3 provided by the foregoing method embodiment. The process related to the network device in the embodiment.

The embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium is used to store a computer program, and when the computer program is executed by a computer, the computer can implement the method shown in FIG. 3 provided by the foregoing method embodiment. The process related to the terminal device in the embodiment.

The embodiment of the present application also provides a computer program product, the computer program product is used to store a computer program, when the computer program is executed by a computer, the computer can implement the embodiment shown in FIG. 3 provided by the above method embodiment Processes related to network equipment.

The embodiment of the present application also provides a computer program product, the computer program product is used to store a computer program, when the computer program is executed by a computer, the computer can implement the embodiment shown in FIG. 3 provided by the above method embodiment Processes related to terminal equipment.

It should be understood that the processor mentioned in the embodiments of this application may be a CPU, or other general-purpose processors, digital signal processors (digital signal processors, DSP), application specific integrated circuits (ASICs), ready-made Field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), and synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM).

It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) is integrated in the processor.

It should be noted that the memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should be understood that in the various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application. The implementation process constitutes any limitation.

A person of ordinary skill in the art may realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

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, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned computer-readable storage medium may be any available medium that can be accessed by a computer. Take this as an example but not limited to: computer-readable media can include random access memory (RAM), read-only memory (ROM), and electrically erasable programmable read-only memory (electrically erasable programmable read-only memory). read only memory, EEPROM), compact disc read-only memory (CD-ROM), universal serial bus flash disk (universal serial bus flash disk), mobile hard disk, or other optical disk storage, disk storage A medium or other magnetic storage device, or any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer.

The above are only specific implementations of the application, but the scope of protection of the embodiments of the application is not limited thereto. Any person skilled in the art can easily think of changes within the technical scope disclosed in the embodiments of the application. Or replacement should be covered within the protection scope of the embodiments of this application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims (35)

A method for determining uplink transmit power, characterized in that it includes: Receiving first indication information from a network device, where the first indication information is used to indicate a first uplink path loss; Determining a first transmit power of first uplink information according to the first uplink path loss, where the first uplink information includes a first uplink signal or a first uplink channel; Sending the first uplink information according to the first transmission power. The method according to claim 1, wherein the first indication information is included in downlink control information DCI, medium access control element MAC CE, or radio resource control RRC signaling. The method according to claim 1 or 2, wherein the method further comprises: Receive the transmission power control TPC from the network device. The method according to claim 3, wherein determining the first transmit power of the first uplink information according to the first uplink path loss comprises: The first transmit power is determined according to the first uplink path loss and the TPC. The method according to any one of claims 1 to 4, wherein the method further comprises: Sending second uplink information to the network device, where the second uplink information is used to determine the uplink path loss, and the second uplink information includes a second uplink signal or a second uplink channel. The method according to claim 5, wherein the method further comprises: Send a power headroom report PHR to the network device, where the PHR is used to determine the transmit power of the second uplink information. The method according to any one of claims 1 to 6, wherein the first uplink signal is a sounding reference signal SRS, and the first uplink channel is a physical uplink shared channel PUSCH or a physical uplink control channel PUCCH. The method according to claims 1-7, wherein the method further comprises: Receiving second signaling from the network device, where the second signaling is used to instruct to apply the uplink path loss from the network device to determine the uplink transmit power. A method for determining uplink transmit power, characterized in that it includes: Receiving the second uplink information from the terminal device; Determine the first uplink path loss of the terminal device according to the second uplink information, where the first uplink path loss is the uplink path loss of the terminal device; Send first indication information to the terminal device, where the first indication information is used to indicate a first uplink path loss, and the first uplink path loss is used to determine the uplink transmit power of the terminal device. The method according to claim 9, wherein determining the first uplink path loss of the terminal device according to the second uplink information comprises: The first uplink path loss is determined according to the measurement result and the second transmission power, where the second transmission power is the power at which the terminal device transmits the second uplink information, and the measurement result is a comparison of the second uplink information Measured. The method according to claim 10, wherein the second transmission power is determined according to the PHR from the terminal device and the maximum transmission power of the terminal device. The method according to any one of claims 9 to 11, wherein the first indication information is included in DCI, MAC CE, or RRC signaling. The method according to any one of claims 9-12, wherein the method further comprises: Determining a TPC corresponding to the second uplink information, where the TPC is used to determine the transmit power of the first uplink information; Sending the TPC to the terminal device. The method according to claim 13, wherein the method further comprises: Receiving the first uplink information from the terminal device, where the first uplink information includes a first uplink signal or a first uplink channel. The method according to any one of claims 9 to 14, wherein the second uplink signal is SRS, and the second uplink channel is PUSCH or PUCCH. The method according to claims 9-15, wherein the method further comprises: Sending second signaling to the terminal device, where the second signaling is used to instruct the terminal device to apply the uplink path loss from the network device to determine the uplink transmit power. A communication device, characterized in that it comprises: A transceiver module, configured to receive first indication information from a network device, where the first indication information is used to indicate a first uplink path loss; A processing module, configured to determine a first transmit power of first uplink information according to the first uplink path loss, where the first uplink information includes a first uplink signal or a first uplink channel; The transceiver module is further configured to send the first uplink information according to the first transmit power. The communication device according to claim 17, wherein the first indication information is included in DCI, MAC CE, or RRC signaling. The communication device according to claim 17 or 18, wherein the transceiver module is further configured to receive TPC from the network device. The communication device according to claim 19, wherein the processing module is configured to determine the first transmit power of the first uplink information according to the first uplink path loss in the following manner: The first transmit power is determined according to the first uplink path loss and the TPC. The communication device according to any one of claims 17 to 20, wherein the transceiver module is further configured to send second uplink information to the network device, and the second uplink information is used to determine the uplink Path loss, and the second uplink information includes a second uplink signal or a second uplink channel. The communication device according to claim 21, wherein the transceiver module is further configured to send a PHR to the network device, and the PHR is used to determine the transmission power of the second uplink information. The communication device according to any one of claims 17 to 22, wherein the first uplink signal is an SRS, and the first uplink channel is a PUSCH or PUCCH. The communication device according to claims 17-23, wherein the transceiver module is further configured to receive second signaling from the network device, and the second signaling is used to indicate that the application is from the network The uplink path loss of the device determines the uplink transmit power. A network device, characterized in that it comprises: The transceiver module is used to receive the second uplink information from the communication device; A processing module, configured to determine a first uplink path loss of the communication device according to the second uplink information, where the first uplink path loss is an uplink path loss of the communication device; The transceiver module is further configured to send first indication information to the communication device, where the first indication information is used to indicate a first uplink path loss, and the first uplink path loss is used to determine the uplink of the communication device. Transmit power. The network device according to claim 25, wherein the processing module is configured to determine the first uplink path loss of the communication device according to the second uplink information in the following manner: The first uplink path loss is determined according to a measurement result and a second transmission power, where the second transmission power is the power at which the communication device transmits the second uplink information, and the measurement result is a comparison of the second uplink information Measured. The network device according to claim 26, wherein the second transmission power is determined based on the PHR from the communication device and the maximum transmission power of the communication device. The network device according to any one of claims 25-27, wherein the first indication information is included in DCI, MAC CE, or RRC signaling. The network device according to any one of claims 25-28, wherein: The processing module is further configured to determine a TPC corresponding to the second uplink information, where the TPC is used to determine the transmit power of the first uplink information; The transceiver module is also used to send the TPC to the communication device. The network device according to claim 29, wherein the transceiver module is further configured to receive the first uplink information from the communication device, and the first uplink information includes a first uplink signal or a first uplink signal. Uplink channel. The network device according to any one of claims 25 to 30, wherein the second uplink signal is an SRS, and the second uplink channel is a PUSCH or PUCCH. The network device according to claims 25-31, wherein the transceiver module is further configured to send second signaling to the communication device, and the second signaling is used to indicate that the communication device application comes from The uplink path loss of the network equipment determines the uplink transmit power. A communication system, characterized by comprising the communication device according to any one of claims 17-24, and comprising the network equipment according to any one of claims 25-32. A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program runs on a computer, the computer executes any one of claims 1 to 8 The method, or the computer is caused to execute the method according to any one of claims 9-16. A chip, characterized by comprising a processor and a communication interface, the processor being used to read instructions to execute the method according to any one of claims 1 to 8, or to execute any one of claims 9 to 16 The method described.

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