CN115665841B - Transmission power determination method, chip, terminal equipment and readable storage medium - Google Patents

Abstract

The application relates to the technical field of communication, and provides a transmitting power determining method, a chip, a terminal device and a readable storage medium. When the main set antenna is determined to be in a communication abnormal state, determining target path loss according to target Reference Signal Received Power (RSRP); the state of communication abnormality includes at least one of the following conditions: the signal to noise ratio of the signals received by the main set antenna is smaller than a preset signal to noise ratio threshold, the signal to noise plus interference ratio of the signals received by the main set antenna is smaller than a preset signal to noise plus interference ratio threshold, and the RSRP of the signals received by the main set antenna is equal to a preset RSRP abnormal value; the target RSRP is larger than a preset RSRP abnormal value; and determining the target transmitting power of the terminal equipment according to the target path loss. The method can avoid the increase of the block error rate of the uplink and the blocking.

Description

Transmission power determination method, chip, terminal equipment and readable storage medium

Technical field

This application relates to the field of communication technology, and specifically relates to a transmission power determination method, a chip, a terminal device and a readable storage medium.

Background technique

When a communication connection is established between a terminal equipment (UE) and a base station, if the terminal equipment is closer to the base station or there are fewer obstacles between them, the signal loss between the terminal equipment and the base station is smaller. The device can use smaller transmit power to communicate with the base station. If the terminal device is far away from the base station or there are many obstacles between the two, resulting in greater signal loss between the terminal device and the base station, the terminal device needs to use greater transmit power to communicate with the base station. In order to compensate for signal losses on different transmission paths and enable the base station to maintain stable receiving power, the transmit power of the terminal equipment needs to be power controlled.

During the power control process, the base station sends a specific reference signal (cell reference signal, CRS) to the UE with a fixed transmission power. The CRS will be attenuated during the transmission process. When the terminal device receives CRS, the signal strength will weaken. The terminal device can obtain the signal strength when receiving the CRS, which is called the received power of the CRS, and then subtract the difference between the transmit power of the CRS when the CRS is transmitted on the base station side and the received power of the CRS as the path loss between the base station and the terminal device. Then the terminal device determines the transmit power of the terminal device based on the path loss between the base station and the terminal device.

However, when the reception performance of the main antenna of the terminal device suddenly deteriorates, for example, the reference signal received power (RSRP) of the signal received by the main antenna on the terminal device is very small, if the calculation is based on such RSRP Path loss may cause the calculated path loss to be too large, causing the transmit power of the terminal device to become larger. The base station then sends a transmit power control (TPC) command to lower the transmit power of the terminal device based on the condition that the signal noise ratio (SNR) of the signal it receives is greater than the target SNR. This will cause the terminal device to The transmit power dropped sharply, causing the block error rate (BLER) of the uplink to increase, causing system freezes.

Contents of the invention

This application provides a transmission power determination method, device, chip, terminal equipment, computer-readable storage medium and computer program product, which can avoid an increase in the block error rate of the uplink and ensure smooth operation of the system.

In a first aspect, a transmit power determination method is provided, which is applied to a terminal device. The terminal device includes a main set antenna and at least one diversity antenna. The transmit power determination method includes: when determining that the main set antenna is in a communication abnormal state, according to The target reference signal received power RSRP determines the target path loss; the communication abnormal state includes at least one of the following conditions: the signal-to-noise ratio of the signal received by the main set antenna is less than the preset signal-to-noise ratio threshold, the main set antenna The signal-to-noise-to-interference ratio of the signal received by the antenna is less than the preset signal-to-noise-to-interference ratio threshold and the RSRP of the signal received by the main set antenna is equal to the preset RSRP abnormal value; the target RSRP is greater than the preset RSRP abnormal value; According to the target path loss, the target transmission power of the terminal device is determined.

The communication abnormality of the main antenna may be caused by the terminal device discovering that the RSRP of the signal received by the main antenna is a preset RSRP abnormal value, or the terminal device discovering the SNR or signal-to-interference-plus-noise ratio of the signal received by the main antenna. (signal to interference plus noise ratio, SINR, also known as signal-to-noise-to-interference ratio) is less than -20dB. Among them, the preset RSRP abnormal value can be -156dBm. If the main antenna is in an abnormal communication state, it can be regarded as the main antenna bottoming out.

When the main antenna drops, the terminal device will no longer directly calculate the path loss based on the RSRP when the main antenna drops. Instead, it will estimate the path loss based on the target RSRP, which is a normal value. The RSRP selected during the estimation process can represent the current signal loss between the terminal equipment and the base station. Therefore, the estimated path loss will not suddenly increase, and the transmit power will not suddenly increase causing TPC command indication. The transmission power of the terminal equipment is significantly reduced. Therefore, it can avoid the situation where the block error rate of the uplink increases and causes system freezes after the transmit power of the terminal equipment is significantly reduced, ensuring that the block error rate of the uplink meets the communication needs, ensuring smooth system operation and communication quality, and improving user experience.

In some possible implementations, the target RSRP includes the historical RSRP of the main set antenna, the historical RSRP is the RSRP of the signal received by the main set antenna before the current moment, and the target is determined according to the target RSRP. Path loss includes: determining the target path loss based on the historical RSRP.

When the main antenna drops, the terminal device will no longer directly calculate the path loss based on the RSRP of the main antenna when the main antenna drops. Instead, it will estimate the path loss based on the historical RSRP of the main antenna. The RSRP selected during the estimation process can represent the current signal loss between the terminal equipment and the base station. Therefore, the estimated path loss will not suddenly increase, and the transmit power will not suddenly increase causing TPC command indication. The transmission power of the terminal equipment is significantly reduced. Therefore, it can avoid the situation where the block error rate of the uplink increases and causes system freezes after the transmit power of the terminal equipment is significantly reduced, ensuring that the block error rate of the uplink meets the communication needs, ensuring smooth system operation and communication quality, and improving user experience.

In some possible implementations, determining the target path loss based on the historical RSRP includes:

When the interval between the recording time of the historical RSRP and the current time is less than or equal to the preset period threshold, the target path loss is determined based on the historical RSRP.

The terminal device can determine whether the interval between the recording time of this normal historical RSRP and the current time exceeds the preset period threshold. If it does not exceed, that is, the interval between the recording time of historical RSRP and the current time is less than or equal to the preset period threshold, it means that the recording time of historical RSRP is relatively recent, and the environment in which the terminal device is located will not change significantly at this time. The drop of the main antenna may be caused by changes in the direction of the main antenna or changes in the environment around the main antenna. Therefore, using the historical RSRP of the main antenna to calculate the target path loss is highly accurate.

In some possible implementations, determining the target path loss based on the historical RSRP further includes: when the interval between the recording time of the historical RSRP and the current time is greater than the preset period threshold, then based on The RSRP of the at least one diversity antenna determines the target path loss.

If the interval between the obtained historical RSRP recording time and the current time exceeds the preset period threshold, it means that the historical RSRP recording time is far away. At this time, the environment in which the terminal device is located may have changed greatly, and the historical RSRP has no influence on the current time. The RSRP at time has no reference significance, so there is no need to use historical RSRP to determine the target path loss. The terminal device can directly transmit according to the maximum allowed transmit power, that is, use the maximum transmit power corresponding to the default power level of the current working bandwidth of the terminal device to transmit signals, so as to ensure that even if a valid RSRP cannot be obtained, it can be guaranteed as much as possible Communication quality. The terminal equipment can also continue to estimate the target path loss based on the RSRP of the signal received by the diversity antenna.

In some possible implementations, the preset period threshold is 640 milliseconds or 1 second.

Usually the antenna switching period is 640ms or 1s. If the preset period threshold does not exceed the antenna switching period, it means that the main set antenna has not been switched at this time, and the target path loss can be calculated based on the historical RSRP. Optionally, if the preset period threshold exceeds the period of antenna switching, the interval between the recording time of the historical RSRP and the current moment may exceed the period of antenna switching. At this time, the main set antenna may no longer be the previous main set antenna, but is to switch to one of the diversity antennas, there is no need to use historical RSRP to calculate the target path loss.

In some possible implementations, the target RSRP includes the RSRP of the signal received by the at least one diversity antenna, and determining the target path loss based on the target RSRP includes: based on the signal received by the at least one diversity antenna. RSRP, determines the target path loss.

When the main antenna drops, the terminal device will no longer directly calculate the path loss based on the RSRP of the main antenna when the main antenna drops. Instead, it will estimate the path loss based on the RSRP of the signal received by the diversity antenna. . Since the main antenna and other diversity antennas are in the same terminal equipment, the RSRP of the diversity antenna can also reflect the signal loss between the terminal equipment and the base station. Therefore, using the RSRP of the diversity antenna to determine the target path loss can also accurately express the terminal equipment and base station. Therefore, the estimated path loss will not suddenly increase, and the transmission power will not suddenly increase, causing the TPC instruction to instruct the terminal device to significantly reduce the transmission power. Therefore, it can avoid the situation where the block error rate of the uplink increases and causes system freezes after the transmit power of the terminal equipment is significantly reduced, ensuring that the block error rate of the uplink meets the communication needs, ensuring smooth system operation and communication quality, and improving user experience.

In some possible implementations, determining the target path loss based on the RSRP of the signal received by the at least one diversity antenna includes: obtaining a first diversity RSRP, where the first diversity RSRP is the at least one diversity antenna. The largest one of the RSRPs of the signals received by the diversity antenna, or the first diversity RSRP is the average RSRP of the signals received by the at least one diversity antenna; when the first diversity RSRP is greater than the preset RSRP If there is an abnormal value, the target path loss is determined according to the first diversity RSRP.

In some possible implementations, the preset signal-to-noise ratio threshold is -20dBm, the preset signal-to-noise-to-interference ratio threshold is -20dBm, and the preset RSRP abnormal value is -156dBm.

When the preset signal-to-noise ratio threshold or the preset signal-to-noise-to-interference ratio threshold is set to -20dB, the recognition efficiency and accuracy can be compatible, so it is more reasonable. The preset RSRP abnormal value is -156dBm, which meets the requirements of the communication protocol. It is reasonable to use -156dBm as the judgment condition for antenna bottoming.

In some possible implementations, the method further includes: when it is determined that both the main antenna and the at least one diversity antenna are in a communication abnormal state, determining that the target transmit power corresponds to the current working bandwidth of the terminal device. the maximum transmit power.

When all antennas are in the down state, the terminal device can transmit according to the maximum transmit power corresponding to the default power level of the current working bandwidth. This ensures that even if a valid RSRP cannot be obtained, it can still transmit as much as possible according to the maximum allowable power level. Transmit power to ensure communication quality.

In a second aspect, a transmission power determination device is provided, including a unit composed of software and/or hardware, and the unit is configured to perform any method in the technical solution described in the first aspect.

In a third aspect, a chip is provided, including a processor; the processor is configured to read and execute a computer program stored in a memory to perform any method in the technical solution described in the first aspect.

Optionally, the chip further includes a memory, and the memory is connected to the processor through circuits or wires.

Further optionally, the chip further includes a communication interface.

In the fourth aspect, a terminal device is provided. The terminal device includes: a processor, a memory and an interface; the processor, the memory and the interface cooperate with each other so that the terminal device executes any method in the technical solution described in the first aspect, or The terminal device includes the chip described in the third aspect.

In a fifth aspect, a computer-readable storage medium is provided. A computer program is stored in the computer-readable storage medium. When the computer program is executed by a processor, the processor is caused to execute the technology described in the first aspect. any method in the scheme.

In a sixth aspect, a computer program product is provided. The computer program product includes: computer program code. When the computer program code is run on a terminal device, the terminal device causes the terminal device to execute the technical solution described in the first aspect. Either way.

Description of the drawings

Figure 1 is a schematic structural diagram of an example terminal device 100 provided by an embodiment of the present application;

Figure 2 is a software structure block diagram of the terminal device 100 provided by the embodiment of the present application;

Figure 3 is a schematic diagram of an application scenario of closed-loop power control provided by the embodiment of the present application;

Figure 4 is a schematic diagram of an example of interaction between a terminal device with multiple antennas and a base station provided by an embodiment of the present application;

Figure 5 is a graph of RSRP when the antenna bottoms out in an example provided by the embodiment of the present application;

Figure 6 is a schematic curve diagram of path loss, maximum transmit power, transmit power and TPC power adjustment amount when the antenna bottoms out in an example provided by the embodiment of the present application;

Figure 7 is a schematic flowchart of an example of a method for determining transmission power provided by an embodiment of the present application;

Figure 8 is a schematic flow chart of another transmission power determination method provided by an embodiment of the present application;

Figure 9 is a schematic flowchart of another transmission power determination method provided by an embodiment of the present application;

Figure 10 is a schematic flowchart of another transmission power determination method provided by an embodiment of the present application;

Figure 11 is a schematic structural diagram of an example of a transmission power determination device provided by an embodiment of this application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Among them, in the description of the embodiments of this application, unless otherwise stated, "/" means or, for example, A/B can mean A or B; "and/or" in this article is only a way to describe related objects. The association relationship means that there can be three relationships. For example, A and/or B can mean: A alone exists, A and B exist simultaneously, and B alone exists. In addition, in the description of the embodiments of this application, "plurality" refers to two or more than two.

Hereinafter, the terms “first”, “second” and “third” are used for descriptive purposes only and shall not be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, features defined as "first", "second", and "third" may explicitly or implicitly include one or more of these features.

The transmission power determination method provided by the embodiments of this application can be applied to mobile phones, tablet computers, wearable devices, vehicle-mounted devices, augmented reality (AR)/virtual reality (VR) devices, notebook computers, and ultra-mobile personal devices. On terminal devices such as computers (ultra-mobile personal computers, UMPCs), netbooks, and personal digital assistants (personal digital assistants, PDA), embodiments of the present application do not place any restrictions on the specific types of terminal devices.

For example, FIG. 1 is a schematic structural diagram of an example terminal device 100 provided by an embodiment of the present application. The terminal device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, Mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, headphone interface 170D, sensor module 180, button 190, motor 191, indicator 192, camera 193, display screen 194, and user Identification module (subscriber identification module, SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyro sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, and ambient light. Sensor 180L, bone conduction sensor 180M, etc.

It can be understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the terminal device 100. In other embodiments of the present application, the terminal device 100 may include more or less components than shown in the figures, or combine some components, or split some components, or arrange different components. The components illustrated may be implemented in hardware, software, or a combination of software and hardware.

The processor 110 may include one or more processing units. For example, the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processing unit (GPU), an image signal processor ( image signal processor (ISP), controller, memory, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural-network processing unit (NPU), etc. . Among them, different processing units can be independent devices or integrated in one or more processors.

The controller may be the nerve center and command center of the terminal device 100 . The controller can generate operation control signals based on the instruction operation code and timing signals to complete the control of fetching and executing instructions.

The processor 110 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in processor 110 is cache memory. This memory may hold instructions or data that have been recently used or recycled by processor 110 . If the processor 110 needs to use the instructions or data again, it can be called directly from the memory. Repeated access is avoided and the waiting time of the processor 110 is reduced, thus improving the efficiency of the system.

In some embodiments, processor 110 may include one or more interfaces. The interface may include an integrated circuit (inter-integrated circuit, I2C) interface, an integrated circuit built-in audio (inter-integrated circuitsound, I2S) interface, a pulse code modulation (PCM) interface, and a universal asynchronous receiver (universal asynchronous receiver) /transmitter, UART) interface, mobile industry processor interface (MIPI), general-purpose input/output (GPIO) interface, subscriber identity module (subscriber identity module, SIM) interface, and/or Universal serial bus (USB) interface, etc.

The I2C interface is a bidirectional synchronous serial bus, including a serial data line (SDA) and a serial clock line (derail clock line, SCL). In some embodiments, processor 110 may include multiple sets of I2C buses. The processor 110 can separately couple the touch sensor 180K, charger, flash, camera 193, etc. through different I2C bus interfaces. For example, the processor 110 can be coupled to the touch sensor 180K through an I2C interface, so that the processor 110 and the touch sensor 180K communicate through the I2C bus interface to implement the touch function of the terminal device 100 .

The I2S interface can be used for audio communication. In some embodiments, processor 110 may include multiple sets of I2S buses. The processor 110 can be coupled with the audio module 170 through the I2S bus to implement communication between the processor 110 and the audio module 170 . In some embodiments, the audio module 170 can transmit audio signals to the wireless communication module 160 through the I2S interface to implement the function of answering calls through a Bluetooth headset.

The PCM interface can also be used for audio communications to sample, quantize and encode analog signals. In some embodiments, the audio module 170 and the wireless communication module 160 may be coupled through a PCM bus interface. In some embodiments, the audio module 170 can also transmit audio signals to the wireless communication module 160 through the PCM interface to implement the function of answering calls through a Bluetooth headset. Both the I2S interface and the PCM interface can be used for audio communication.

The UART interface is a universal serial data bus used for asynchronous communication. The bus can be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, a UART interface is generally used to connect the processor 110 and the wireless communication module 160 . For example, the processor 110 communicates with the Bluetooth module in the wireless communication module 160 through the UART interface to implement the Bluetooth function. In some embodiments, the audio module 170 can transmit audio signals to the wireless communication module 160 through the UART interface to implement the function of playing music through a Bluetooth headset.

The MIPI interface can be used to connect the processor 110 with peripheral devices such as the display screen 194 and the camera 193 . MIPI interfaces include camera serial interface (CSI), display serial interface (displayserial interface, DSI), etc. In some embodiments, the processor 110 and the camera 193 communicate through the CSI interface to implement the shooting function of the terminal device 100. The processor 110 and the display screen 194 communicate through the DSI interface to implement the display function of the terminal device 100.

The GPIO interface can be configured through software. The GPIO interface can be configured as a control signal or as a data signal. In some embodiments, the GPIO interface can be used to connect the processor 110 with the camera 193, display screen 194, wireless communication module 160, audio module 170, sensor module 180, etc. The GPIO interface can also be configured as an I2C interface, I2S interface, UART interface, MIPI interface, etc.

The USB interface 130 is an interface that complies with USB standard specifications, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, etc. The USB interface 130 can be used to connect a charger to charge the terminal device 100, and can also be used to transmit data between the terminal device 100 and peripheral devices. It can also be used to connect headphones to play audio through them. This interface can also be used to connect other terminal devices, such as AR devices.

It can be understood that the interface connection relationships between the modules illustrated in the embodiments of the present application are only schematic illustrations and do not constitute a structural limitation on the terminal device 100 . In other embodiments of the present application, the terminal device 100 may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

The charging management module 140 is used to receive charging input from the charger. Among them, the charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 may receive charging input from the wired charger through the USB interface 130 . In some wireless charging embodiments, the charging management module 140 may receive wireless charging input through the wireless charging coil of the terminal device 100 . While charging the battery 142, the charging management module 140 can also provide power to the terminal device through the power management module 141.

The power management module 141 is used to connect the battery 142, the charging management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charging management module 140, and supplies power to the processor 110, internal memory 121, external memory, display screen 194, camera 193, wireless communication module 160, etc. The power management module 141 can also be used to monitor battery capacity, battery cycle times, battery health status (leakage, impedance) and other parameters. In some other embodiments, the power management module 141 may also be provided in the processor 110 . In other embodiments, the power management module 141 and the charging management module 140 may also be provided in the same device.

The wireless communication function of the terminal device 100 can be implemented through the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modem processor and the baseband processor.

Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals. The structures of antenna 1 and antenna 2 in Figure 1 are only an example. Each antenna in terminal device 100 may be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example: Antenna 1 can be reused as a diversity antenna for a wireless LAN. In other embodiments, antennas may be used in conjunction with tuning switches.

The mobile communication module 150 can provide wireless communication solutions including 2G/3G/4G/5G applied to the terminal device 100. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (LNA), etc. The mobile communication module 150 can receive electromagnetic waves through the antenna 1, perform filtering, amplification and other processing on the received electromagnetic waves, and transmit them to the modem processor for demodulation. The mobile communication module 150 can also amplify the signal modulated by the modem processor and convert it into electromagnetic waves through the antenna 1 for radiation. In some embodiments, at least part of the functional modules of the mobile communication module 150 may be disposed in the processor 110 . In some embodiments, at least part of the functional modules of the mobile communication module 150 and at least part of the modules of the processor 110 may be provided in the same device.

A modem processor may include a modulator and a demodulator. Among them, the modulator is used to modulate the low-frequency baseband signal to be sent into a medium-high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing. After the low-frequency baseband signal is processed by the baseband processor, it is passed to the application processor. The application processor outputs sound signals through audio devices (not limited to speaker 170A, receiver 170B, etc.), or displays images or videos through display screen 194. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be independent of the processor 110 and may be provided in the same device as the mobile communication module 150 or other functional modules.

The wireless communication module 160 can provide information including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) network), Bluetooth (BT), and global navigation satellite systems applied on the terminal device 100 (global navigation satellite system, GNSS), frequency modulation (FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication solutions. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2 , frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110 . The wireless communication module 160 can also receive the signal to be sent from the processor 110, frequency modulate it, amplify it, and convert it into electromagnetic waves through the antenna 2 for radiation.

In some embodiments, the antenna 1 of the terminal device 100 is coupled to the mobile communication module 150, and the antenna 2 is coupled to the wireless communication module 160, so that the terminal device 100 can communicate with the network and other devices through wireless communication technology. The wireless communication technology may include global system for mobile communications (GSM), general packet radio service (GPRS), code division multiple access (codedivision multiple access, CDMA), broadband code Wideband code division multiple access (WCDMA), time-division code division multiple access (TD-SCDMA), long term evolution (LTE), BT, GNSS, WLAN, NFC, FM , and/or IR technology, etc. The GNSS may include global positioning system (GPS), global navigation satellite system (GLONASS), Beidou satellite navigation system (beidounavigation satellite system, BDS), quasi-zenith satellite system (quasi- zenith satellitesystem (QZSS) and/or satellite based augmentation systems (SBAS).

The terminal device 100 implements display functions through a GPU, a display screen 194, an application processor, and the like. The GPU is an image processing microprocessor and is connected to the display screen 194 and the application processor. GPUs are used to perform mathematical and geometric calculations for graphics rendering. Processor 110 may include one or more GPUs that execute program instructions to generate or alter display information.

The display screen 194 is used to display images, videos, etc. Display 194 includes a display panel. The display panel can use a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active matrix organic light emitting diode or an active matrix organic light emitting diode (active-matrix organic light emitting diode). (AMOLED), flexible light-emitting diode (FLED), Miniled, MicroLed, Micro-oLed, quantum dot light-emitting diodes (QLED), etc. In some embodiments, the terminal device 100 may include 1 or N display screens 194, where N is a positive integer greater than 1.

The terminal device 100 can implement the shooting function through the ISP, camera 193, video codec, GPU, display screen 194, application processor, etc.

The ISP is used to process the data fed back by the camera 193. For example, when taking a photo, the shutter is opened, the light is transmitted to the camera sensor through the lens, the optical signal is converted into an electrical signal, and the camera sensor passes the electrical signal to the ISP for processing, and converts it into an image visible to the naked eye. ISP can also perform algorithm optimization on image noise, brightness, and skin color. ISP can also optimize the exposure, color temperature and other parameters of the shooting scene. In some embodiments, the ISP may be provided in the camera 193.

Camera 193 is used to capture still images or video. The object passes through the lens to produce an optical image that is projected onto the photosensitive element. The photosensitive element may be a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, and then passes the electrical signal to the ISP to convert it into a digital image signal. ISP outputs digital image signals to DSP for processing. DSP converts digital image signals into standard RGB, YUV and other format image signals. In some embodiments, the terminal device 100 may include 1 or N cameras 193, where N is a positive integer greater than 1.

Digital signal processors are used to process digital signals. In addition to digital image signals, they can also process other digital signals. For example, when the terminal device 100 selects a frequency point, the digital signal processor is used to perform Fourier transform on the frequency point energy.

Video codecs are used to compress or decompress digital video. The terminal device 100 may support one or more video codecs. In this way, the terminal device 100 can play or record videos in multiple encoding formats, such as moving picture experts group (moving picture experts group, MPEG) 1, MPEG2, MPEG3, MPEG4, etc.

NPU is a neural network (NN) computing processor. By drawing on the structure of biological neural networks, such as the transmission mode between neurons in the human brain, it can quickly process input information and can continuously learn by itself. The NPU can realize intelligent cognitive applications of the terminal device 100, such as image recognition, face recognition, speech recognition, text understanding, etc.

The external memory interface 120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the terminal device 100 . The external memory card communicates with the processor 110 through the external memory interface 120 to implement the data storage function. Such as saving music, videos, etc. files in external memory card.

Internal memory 121 may be used to store computer executable program code, which includes instructions. The processor 110 executes instructions stored in the internal memory 121 to execute various functional applications and data processing of the terminal device 100 . The internal memory 121 may include a program storage area and a data storage area. Among them, the stored program area can store an operating system, at least one application program required for a function (such as a sound playback function, an image playback function, etc.). The storage data area may store data created during use of the terminal device 100 (such as audio data, phone book, etc.). In addition, the internal memory 121 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, universal flash storage (UFS), etc.

The terminal device 100 can implement audio functions through the audio module 170, the speaker 170A, the receiver 170B, the microphone 170C, the headphone interface 170D, and the application processor. Such as music playback, recording, etc.

The audio module 170 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signals. Audio module 170 may also be used to encode and decode audio signals. In some embodiments, the audio module 170 may be provided in the processor 110 , or some functional modules of the audio module 170 may be provided in the processor 110 .

Speaker 170A, also called "speaker", is used to convert audio electrical signals into sound signals. The terminal device 100 can listen to music through the speaker 170A, or listen to hands-free calls.

Receiver 170B, also called "earpiece", is used to convert audio electrical signals into sound signals. When the terminal device 100 answers a call or a voice message, the voice can be heard by bringing the receiver 170B close to the human ear.

Microphone 170C, also called "microphone" or "microphone", is used to convert sound signals into electrical signals. When making a call or sending a voice message, the user can speak close to the microphone 170C with the human mouth and input the sound signal to the microphone 170C. The terminal device 100 may be provided with at least one microphone 170C. In other embodiments, the terminal device 100 may be provided with two microphones 170C, which in addition to collecting sound signals, may also implement a noise reduction function. In other embodiments, the terminal device 100 can also be equipped with three, four or more microphones 170C to collect sound signals, reduce noise, identify sound sources, and implement directional recording functions, etc.

The headphone interface 170D is used to connect wired headphones. The headphone interface 170D may be a USB interface 130, or may be a 3.5 mm open mobile terminal platform (OMTP) standard interface or a Cellular Telecommunications Industry Association of the USA (CTIA) standard interface.

The pressure sensor 180A is used to sense pressure signals and can convert the pressure signals into electrical signals. In some embodiments, pressure sensor 180A may be disposed on display screen 194 . There are many types of pressure sensors 180A, such as resistive pressure sensors, inductive pressure sensors, capacitive pressure sensors, etc. A capacitive pressure sensor may include at least two parallel plates of conductive material. When a force is applied to pressure sensor 180A, the capacitance between the electrodes changes. The terminal device 100 determines the intensity of the pressure based on the change in capacitance. When a touch operation is performed on the display screen 194, the terminal device 100 detects the strength of the touch operation according to the pressure sensor 180A. The terminal device 100 may also calculate the touched position based on the detection signal of the pressure sensor 180A. In some embodiments, touch operations acting on the same touch location but with different touch operation intensities may correspond to different operation instructions. For example: when a touch operation with a touch operation intensity less than the first pressure threshold is applied to the short message application icon, an instruction to view the short message is executed. When a touch operation with a touch operation intensity greater than or equal to the first pressure threshold is applied to the short message application icon, an instruction to create a new short message is executed.

The gyro sensor 180B may be used to determine the motion posture of the terminal device 100 . In some embodiments, the angular velocity of the terminal device 100 about three axes (ie, x, y, and z axes) may be determined by the gyro sensor 180B. The gyro sensor 180B can be used for image stabilization. For example, when the shutter is pressed, the gyro sensor 180B detects the angle at which the terminal device 100 shakes, calculates the distance that the lens module needs to compensate based on the angle, and allows the lens to offset the shake of the terminal device 100 through reverse movement to achieve anti-shake. The gyro sensor 180B can also be used for navigation and somatosensory game scenes.

Air pressure sensor 180C is used to measure air pressure. In some embodiments, the terminal device 100 calculates the altitude through the air pressure value measured by the air pressure sensor 180C to assist positioning and navigation.

Magnetic sensor 180D includes a Hall sensor. The terminal device 100 can detect the opening and closing of the flip leather case using the magnetic sensor 180D. In some embodiments, when the terminal device 100 is a flip machine, the terminal device 100 may detect the opening and closing of the flip according to the magnetic sensor 180D. Then, based on the detected opening and closing status of the leather case or the opening and closing status of the flip cover, features such as automatic unlocking of the flip cover are set.

The acceleration sensor 180E can detect the acceleration of the terminal device 100 in various directions (generally three axes). When the terminal device 100 is stationary, the magnitude and direction of gravity can be detected. It can also be used to identify the posture of terminal devices and be used in applications such as horizontal and vertical screen switching, pedometers, etc.

Distance sensor 180F for measuring distance. The terminal device 100 can measure distance through infrared or laser. In some embodiments, when shooting a scene, the terminal device 100 can use the distance sensor 180F to measure distance to achieve fast focusing.

Proximity light sensor 180G may include, for example, a light emitting diode (LED) and a light detector, such as a photodiode. The light emitting diode may be an infrared light emitting diode. The terminal device 100 emits infrared light through a light emitting diode. The terminal device 100 detects infrared reflected light from nearby objects using photodiodes. When sufficient reflected light is detected, it can be determined that there is an object near the terminal device 100 . When insufficient reflected light is detected, the terminal device 100 may determine that there is no object near the terminal device 100 . The terminal device 100 can use the proximity light sensor 180G to detect when the user holds the terminal device 100 close to the ear for talking, so as to automatically turn off the screen to save power. The proximity light sensor 180G can also be used in holster mode, and pocket mode automatically unlocks and locks the screen.

The ambient light sensor 180L is used to sense ambient light brightness. The terminal device 100 can adaptively adjust the brightness of the display screen 194 according to the perceived ambient light brightness. The ambient light sensor 180L can also be used to automatically adjust the white balance when taking pictures. The ambient light sensor 180L can also cooperate with the proximity light sensor 180G to detect whether the terminal device 100 is in the pocket to prevent accidental touching.

Fingerprint sensor 180H is used to collect fingerprints. The terminal device 100 can use the collected fingerprint characteristics to realize fingerprint unlocking, access application lock, fingerprint photography, fingerprint answering incoming calls, etc.

Temperature sensor 180J is used to detect temperature. In some embodiments, the terminal device 100 uses the temperature detected by the temperature sensor 180J to execute the temperature processing policy. For example, when the temperature reported by the temperature sensor 180J exceeds a threshold, the terminal device 100 reduces the performance of a processor located near the temperature sensor 180J in order to reduce power consumption and implement thermal protection. In other embodiments, when the temperature is lower than another threshold, the terminal device 100 heats the battery 142 to prevent the low temperature from causing the terminal device 100 to shut down abnormally. In some other embodiments, when the temperature is lower than another threshold, the terminal device 100 performs boosting on the output voltage of the battery 142 to avoid abnormal shutdown caused by low temperature.

Touch sensor 180K, also called "touch panel". The touch sensor 180K can be disposed on the display screen 194. The touch sensor 180K and the display screen 194 form a touch screen, which is also called a "touch screen". The touch sensor 180K is used to detect a touch operation on or near the touch sensor 180K. The touch sensor can pass the detected touch operation to the application processor to determine the touch event type. Visual output related to the touch operation may be provided through display screen 194 . In other embodiments, the touch sensor 180K may also be disposed on the surface of the terminal device 100 in a position different from that of the display screen 194 .

Bone conduction sensor 180M can acquire vibration signals. In some embodiments, the bone conduction sensor 180M can acquire the vibration signal of the vibrating bone mass of the human body's vocal part. The bone conduction sensor 180M can also contact the human body's pulse and receive blood pressure beating signals. In some embodiments, the bone conduction sensor 180M can also be provided in an earphone and combined into a bone conduction earphone. The audio module 170 can analyze the voice signal based on the vibration signal of the vocal vibrating bone obtained by the bone conduction sensor 180M to implement the voice function. The application processor can analyze the heart rate information based on the blood pressure beating signal acquired by the bone conduction sensor 180M to implement the heart rate detection function.

The buttons 190 include a power button, a volume button, etc. Key 190 may be a mechanical key. It can also be a touch button. The terminal device 100 may receive key input and generate key signal input related to user settings and function control of the terminal device 100 .

The motor 191 can generate vibration prompts. The motor 191 can be used for vibration prompts for incoming calls and can also be used for touch vibration feedback. For example, touch operations for different applications (such as taking pictures, audio playback, etc.) can correspond to different vibration feedback effects. The motor 191 can also respond to different vibration feedback effects for touch operations in different areas of the display screen 194 . Different application scenarios (such as time reminders, receiving information, alarm clocks, games, etc.) can also correspond to different vibration feedback effects. The touch vibration feedback effect can also be customized.

The indicator 192 may be an indicator light, which may be used to indicate charging status, power changes, or may be used to indicate messages, missed calls, notifications, etc.

The SIM card interface 195 is used to connect a SIM card. The SIM card can be connected to or separated from the terminal device 100 by inserting it into the SIM card interface 195 or pulling it out from the SIM card interface 195 . The terminal device 100 can support 1 or N SIM card interfaces, where N is a positive integer greater than 1. SIM card interface 195 can support Nano SIM card, Micro SIM card, SIM card, etc. Multiple cards can be inserted into the same SIM card interface 195 at the same time. The types of the plurality of cards may be the same or different. The SIM card interface 195 is also compatible with different types of SIM cards. The SIM card interface 195 is also compatible with external memory cards. The terminal device 100 interacts with the network through the SIM card to implement functions such as calls and data communications. In some embodiments, the terminal device 100 adopts eSIM, that is, an embedded SIM card. The eSIM card can be embedded in the terminal device 100 and cannot be separated from the terminal device 100 .

The software system of the terminal device 100 may adopt a layered architecture, an event-driven architecture, a microkernel architecture, a microservice architecture, or a cloud architecture. The embodiment of this application takes the Android system with a layered architecture as an example to illustrate the software structure of the terminal device 100 .

Figure 2 is a software structure block diagram of the terminal device 100 according to the embodiment of the present application. The layered architecture divides the software into several layers, and each layer has clear roles and division of labor. The layers communicate through software interfaces. In some embodiments, the Android system is divided into four layers, from top to bottom: application layer, application framework layer, Android runtime and system libraries, and kernel layer. The application layer can include a series of application packages.

As shown in Figure 2, the application package can include camera, gallery, calendar, calling, map, navigation, WLAN, Bluetooth, music, video, short message and other applications.

The application framework layer provides an application programming interface (API) and programming framework for applications in the application layer. The application framework layer includes some predefined functions.

As shown in Figure 2, the application framework layer can include a window manager, content provider, view system, phone manager, resource manager, notification manager, etc.

A window manager is used to manage window programs. The window manager can obtain the display size, determine whether there is a status bar, lock the screen, capture the screen, etc.

Content providers are used to store and retrieve data and make this data accessible to applications. Said data can include videos, images, audio, calls made and received, browsing history and bookmarks, phone books, etc.

The view system includes visual controls, such as controls that display text, controls that display pictures, etc. A view system can be used to build applications. The display interface can be composed of one or more views. For example, a display interface including a text message notification icon may include a view for displaying text and a view for displaying pictures.

The phone manager is used to provide communication functions of the terminal device 100 . For example, call status management (including connected, hung up, etc.).

The resource manager provides various resources to applications, such as localized strings, icons, pictures, layout files, video files, etc.

The notification manager allows applications to display notification information in the status bar, which can be used to convey notification-type messages and can automatically disappear after a short stay without user interaction. For example, the notification manager is used to notify download completion, message reminders, etc. The notification manager can also be notifications that appear in the status bar at the top of the system in the form of charts or scroll bar text, such as notifications for applications running in the background, or notifications that appear on the screen in the form of conversation windows. For example, text information is prompted in the status bar, a prompt sound is emitted, the terminal device vibrates, and the indicator light flashes, etc.

Android runtime includes core libraries and virtual machines. The Android runtime is responsible for the scheduling and management of the Android system.

The core library contains two parts: one is the functional functions that need to be called by the Java language, and the other is the core library of Android.

The application layer and application framework layer run in virtual machines. The virtual machine executes the java files of the application layer and application framework layer into binary files. The virtual machine is used to perform object life cycle management, stack management, thread management, security and exception management, and garbage collection and other functions.

System libraries can include multiple functional modules. For example: surface manager (surface manager), media library (media libraries), 3D graphics processing library (for example: OpenGL ES), 2D graphics engine (for example: SGL), etc.

The surface manager is used to manage the display subsystem and provides the fusion of 2D and 3D layers for multiple applications.

The media library supports playback and recording of a variety of commonly used audio and video formats, as well as static image files, etc. The media library can support a variety of audio and video encoding formats, such as: MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, etc.

The 3D graphics processing library is used to implement 3D graphics drawing, image rendering, composition, and layer processing.

2D Graphics Engine is a drawing engine for 2D drawing.

The kernel layer is the layer between hardware and software. The kernel layer contains at least display driver, camera driver, audio driver, and sensor driver.

When a communication connection is established between a terminal device and a base station, if the terminal device is closer to the base station or there are fewer obstacles between them, so that the signal loss between the terminal device and the base station is smaller, the terminal device can use a smaller transmit power to communicate with the base station. If the terminal device is far away from the base station or there are many obstacles between the two, resulting in greater signal loss between the terminal device and the base station, the terminal device needs to use greater transmit power to communicate with the base station. In order to compensate for signal losses on different transmission paths and enable the base station to maintain stable receiving power, it is necessary to perform power control on the transmit power of the terminal equipment.

There are two main methods of power control of terminal equipment: open-loop power control (referred to as open-loop power control) and closed-loop power control (referred to as closed-loop power control, also called inner-loop power control).

Open-loop power control is an open method of adjusting the transmit power of terminal equipment. The terminal equipment adjusts its own transmit power based on the strength of base station signal coverage measured by itself. It is usually used when the terminal device registers with the network to send the PRACH signal to the base station. After the terminal device registers with the network, closed-loop power control can be used to adjust the transmit power.

In the closed-loop power control scenario, the transmit power of the terminal equipment is not only related to the strength of the base station signal coverage measured by itself, but also related to the TPC instructions issued by the base station. For details, see Figure 3: the base station can broadcast CRS according to a certain transmission power. After receiving the CRS, the terminal device can obtain the received power P _r,crs of the received CRS, where P _r,crs is the RSRP value of the CRS. Typically, a filter loop can be used to measure the value of RSRP. The terminal equipment can first determine the uplink transmit power based on the received power P _{r, crs} . At the same time, the terminal device can also obtain the transmission power when the base station broadcasts the CRS, which is recorded as P _t,crs . It can be understood that the above-mentioned CRS signal loss between the base station and the terminal device can be recorded as path loss (PL), that is, PL=P _t,crs -P _r,crs . After the terminal device determines the uplink transmit power, it sends PUSCH and PUCCH signals to the base station through the wireless channel.

The base station adjusts the uplink transmit power of the terminal equipment based on the SNR or SINR of the PUSCH and PUCCH signals sent by the terminal equipment to the base station through the wireless channel. Specifically: the base station will preset a target SNR, which is used to measure whether the received signal can be accurately demodulated. The base station can use the TPC Decision Algorithm to determine whether to increase or decrease the transmit power of the terminal equipment. Here, the signal received by the base station is a PUSCH signal as an example. When the SNR of the PUSCH signal received by the base station is smaller than the target SNR, the base station will think that the signal power transmitted by the terminal device is too low at this time, affecting the demodulation effect of the signal. Therefore, TPC instructions are issued to the terminal equipment to control the terminal equipment to increase the transmit power; when the SNR of the PUSCH signal received by the base station is greater than the target SNR, the base station will consider that the signal power transmitted by the terminal equipment is sufficient for demodulation. In order to reduce the power of the terminal equipment, If the power consumption and other resources are reduced, a TPC command is issued to the terminal device to control the terminal device to lower the transmit power.

Then, the terminal device uses the power setting algorithm to determine the transmit power of the terminal device according to the TPC command issued by the base station. This process is called closed-loop power control.

In the above closed-loop power control process, path loss is an important indicator that affects the transmit power of the terminal equipment, so accurate path loss has a crucial impact on the accuracy of power control.

However, when the direction or position of the terminal device changes, or the surrounding radiation environment changes, causing the reception performance of the terminal device's main antenna to suddenly deteriorate, for example, the RSRP of the main antenna measured by the terminal device suddenly drops. If the path loss is calculated based on the RSRP of the main antenna measured by the terminal device at this time, the path loss calculation result may be too large, causing the terminal device's transmit power to become larger. At this time, the base station lowers the transmit power of the terminal device based on the SNR of the PUSCH signal sent by the terminal device to the base station, which will cause the power of the terminal device to drop sharply, causing the uplink BLER to increase, causing system freezes.

Taking the terminal equipment with four antennas shown in Figure 4 as an example, during downlink communication (transmitted by the base station and received by the terminal), the terminal equipment uses four antennas (for example, RX0, RX1, RX2 and RX3) to receive Signals transmitted by base stations via space radiation. Among them, RX0 is the primary receive (PR) antenna, also called the primary antenna, recorded as PRX. The primary antenna RX0 can also be used as a transmitting antenna to transmit signals, that is, it is responsible for transmitting and receiving radio frequency signals. RX1, RX2 and RX3 serve as diversity receive (DR) antennas, also called diversity antennas, denoted as DRX. When the radiation environment around RX0 changes, causing the downlink communication performance of RX0 to decline, that is, the SNR or SINR of the received signal received by RX0 is less than -20dB, or RX0 drops (that is, RX0 loses communication capabilities), at this time the terminal device will follow According to the requirements of the communication protocol, set the RSRP of RX0 to -156dBm.

Usually, the terminal equipment will calculate the RSRP according to the upper limit value of -140dBm when -156dBm, and use it as P _r,crs into the formula PL = P _t,crs -P _r,crs to calculate the path loss. However, the path loss calculated in this way will be very large. For example, when P _t,crs of CRS is 18dBm, the path loss PL=P _t,crs -P _r,crs =18-(-140)=158dB. Therefore, the terminal device will calculate the transmit power based on the path loss of 158dB, and the calculated transmit power will be very large. At this time, the terminal device will transmit according to the maximum transmit power _PCMAX . At this time, because the transmission power is very large and the SNR of the received signal detected by the base station is also very large, the TPC decision algorithm will be used to issue TCP instructions to instruct the terminal device to reduce the transmission power by a large margin.

For example, you can refer to the RSRP curve of RX0 shown in Figure 5. It can be seen from Figure 5 that the RSRP of the signal received by RX0 suddenly drops in downlink communication performance at time T (reflected as a depression on the curve), then this At this time, it is determined that RX0 has bottomed out. Continuing to refer to Figure 6, at time T, because RX0 bottoms out, the path loss calculated by the terminal equipment will be very large. The PL curve in Figure 6 suddenly increases at time T (reflected as a bulge on the curve). ). The process by which the terminal equipment determines the transmit power P _pusch based on the path loss can be obtained by using formula (1) or a modification of formula (1). The terminal equipment will bring the path loss into formula (2) to obtain the calculated transmit power (calculated transmit power value P _{calculated value} ). If _{the calculated value of} P is greater than the maximum transmit power _PCMAX corresponding to the default power level of the current working bandwidth of the terminal device, the terminal device will transmit according to _PCMAX ; if _{the calculated value of} P is less than _PCMAX , the terminal device will transmit according to the calculated value of transmit power. emission.

Specifically:

_{Calculated value of} P = P ₀ (j) + α (j) PL ( q ) + 10 log (2 ^μ ·M _RB ) + Δ _TF + δ (l) (2)

In the above formula (1), _PCMAX represents the maximum transmit power corresponding to the default power level of the current working bandwidth of the terminal device. j represents the index of the configuration set; P ₀ (j) is a configurable parameter of the network, which can represent the target received power, that is, the power of the signal that the base station wants to receive; α (j) is the interference compensation factor that can be configured by the network; PL (q) represents the path loss of the reference signal q during uplink communication, which is the target path loss in the embodiment of the present application; μ corresponds to the sub-carrier spacing (SCS), and 2 ^μ * 15KHz represents the sub-carrier spacing, for example, μ = 0 When , the subcarrier spacing is 15KHz, and when μ=1, the subcarrier spacing is 30KHz. M _RB represents the number of resource blocks allocated for PUSCH transmission; Δ _TF represents the power adjustment amount of the modulation and coding scheme (MCS); δ(l) represents the power adjusted by the closed-loop power control, which is indicated by the TPC command Power adjustment amount; l represents the process of closed loop.

For example, when j=2, according to the upper layer message configuration: P ₀ (j) = -76dB, α (j) = 0.8, M _RB = 4, μ = 0, Δ _TF = 0dB, PL (q) = 115dB, According to the log message of the terminal device, it can be known that δ(l) is -5dB, then it can be obtained:

P _pusch =P ₀ (j)+α(j)PL(q)+10log(2 ^μ ·M _RB )+Δ _TF +δ(l)

=-76+0.8·115+10log(1·4)+0-5＝17dBm

δ(l) in the above formula (1) is determined by the parameter tpc-Accumulation. When the parameter tpc-Accumulation is configured as enabled (enabled) or not configured, the accumulation method is used for power adjustment. When the parameter tpc-Accumulatio is configured as disabled, the absolute value method is used for power adjustment. The embodiments of the present application do not limit this. No matter which adjustment method is adopted, the result of δ(l) remains unchanged, but the way of determining δ(l) is different.

If the path loss calculated by the terminal equipment is very large, the calculated transmission power value will become very large accordingly. The curve of the calculated transmission power value in Figure 6 will appear a bulge at time T, and the peak value of the bulge will exceed the maximum transmission power. _PCMAX , which causes the actual transmit power of the terminal device to suddenly reach the maximum transmit power _PCMAX . This will trigger the base station to issue a TPC command to significantly reduce the transmit power of the terminal equipment. The power adjustment amount controlled by the TPC command can be seen in the TPC curve in Figure 6. A significant drop in the TPC curve near time T indicates a large reduction. At the same time, the terminal device can use the power control algorithm to calculate the transmit power of the terminal device again according to the power adjustment amount controlled by the TPC command. Continuing to refer to the curve of the calculated transmission power value in Figure 6, under the instruction of the TPC command, it decreases significantly and pits appear. During a period of time when the curve of the calculated transmit power value shown in Figure 6 remains significantly reduced, the block error rate of the uplink will increase and the system will freeze.

In the technical solution provided by this application, when RX0 bottoms out, the terminal device will no longer directly calculate the path loss based on the RSRP when RX0 bottoms out, but will calculate the path loss based on the historical time before the current moment of RX0. RSRP or diversity antenna RSRP to estimate path loss. The RSRP selected during the estimation process can represent the current signal loss situation between the terminal equipment and the base station. Therefore, the estimated path loss will not suddenly increase, and the transmit power will not suddenly increase causing a TPC command indication. The transmission power of the terminal equipment is significantly reduced. Therefore, it can avoid the situation where the block error rate of the uplink increases and causes system freezes after the transmit power of the terminal equipment is significantly reduced, ensuring that the block error rate of the uplink meets the communication needs, ensuring smooth system operation and communication quality, and improving user experience.

In order to facilitate understanding, the following embodiments of the present application will take the terminal device with the structure shown in Figure 1 and Figure 2 as an example. The method for determining the transmission power provided by the embodiments of the present application will be specifically described in conjunction with the drawings and application scenarios.

The path loss determination method provided by the embodiment of the present application can be applied to a terminal device that is equipped with multiple antennas, including a main antenna and one or more diversity antennas. Among them, the main set antenna can be used to transmit and receive radio frequency signals. When receiving radio frequency signals, it can be called the main set receiving antenna. Diversity antennas can be used to receive radio frequency signals. When receiving radio frequency signals, they can also be called diversity receiving antennas.

For details of the transmit power determination method provided by the embodiment of the present application, please refer to the embodiment shown in Figure 7. Figure 7 is a flow chart of a method for determining target path loss based on historical RSRP provided by the embodiment of the present application. The method includes:

S701. Determine whether the main antenna is in a communication abnormal state. If yes, execute S702.

Specifically, the terminal device can monitor the communication status of the antenna installed on it to determine whether the antenna is in an abnormal communication state (that is, in a bottom-down state).

Optionally, the terminal device may determine whether the communication status of the antenna is abnormal based on the signal-to-noise ratio of the received CRS broadcast by the base station. When the signal-to-noise ratio of the CRS received by the terminal device through the main antenna is less than the preset signal-to-noise ratio threshold, it is determined that the main antenna is in an abnormal communication state at this time, that is, the main antenna is bottomed out. If the signal-to-noise ratio of the CRS received by the terminal device through the main antenna is greater than or equal to the preset signal-to-noise ratio threshold, it can be determined that the main antenna is in a normal communication state at this time. If the above-mentioned preset signal-to-noise ratio threshold is set to a large value, abnormal communication status can be identified early in the process of deteriorating communication capabilities, improving the identification efficiency; if the preset signal-to-noise ratio threshold is set to a small value, communication abnormalities can be accurately identified status to avoid misidentification. Optionally, the preset signal-to-noise ratio threshold can also be other thresholds, such as -19dB, -19.5dB, -20.5dB, -21dB and other thresholds. This preset signal-to-noise ratio threshold can be selected and adjusted as needed. Optionally, the preset signal-to-noise ratio threshold can be -20dB, which is compatible with recognition efficiency and accuracy, and is therefore more reasonable.

Optionally, the terminal device may determine whether the communication status of the antenna is abnormal or based on the received SINR of the CRS broadcast by the base station. The signal-to-noise-to-interference ratio refers to the ratio of the intensity of the received useful signal to the intensity of the received interfering signal (noise and interference). It can be simply understood as the signal-to-noise ratio. The way to use SINR is the same as the way to use SNR.

Optionally, the terminal device may determine whether the communication status of the antenna is abnormal or not based on the received RSRP of the CRS broadcast by the base station. When the RSPR of the CRS received by the terminal device through the main antenna is a preset abnormal value, it indicates that the main antenna is in a communication abnormal state, that is, a bottom-out situation occurs. In some embodiments, the preset abnormal value may be -156dBm. Of course, the preset abnormal value can also be other values, as long as it can represent the state of the antenna bottoming out, which is not limited in the embodiments of the present application.

Since the signal-to-noise ratio SNR=P _r,crs /P _n , where P _n represents the noise power. It can be seen that SNR and P _r,crs are directly proportional to each other. And because P _{r, crs} is RSRP, the size of SNR can characterize the size of RSRP. When the SNR is less than a certain threshold, it means that the RSRP is also very low. In some embodiments, when the signal-to-noise ratio or signal-to-noise-to-interference ratio of the CRS signal received by the terminal device is less than -20dB, the terminal device can directly set the RSRP to -156dBm, indicating that the antenna has lost communication capability and is in a bottom-out state. , that is, the phenomenon of bottoming out occurs.

S702. Obtain historical RSRP. Among them, the historical RSRP is the RSRP of the signal received by the main set antenna before the current time, and the historical RSRP is greater than the preset RSRP abnormal value.

The terminal device detects and records the RSRP of each antenna at a certain period, and uses the RSRP value obtained by the main set of antennas within a period of time before the current time as a set of RSRPs. The RSRP set may include outliers, which are values equal to the preset RSRP outlier value; it may also include normal values, which are values that are not equal to the preset RSRP outlier value. If the preset RSRP abnormal value is -156dBm, the normal value can be -120dBm, -130dBm and other values greater than -156dBm.

When it is found that the main set antenna has bottomed out, that is, when the RSRP of the signal received by the main set antenna at the current moment is an abnormal value of -156dBm, the terminal device can select a recording time (that is, the detection time) from the RSRP set that is far away from the current The most recent and normal RSRP is used as the historical RSRP. The closer to the current moment, the smaller the change in the antenna status of the terminal device. Therefore, the target path loss determined by using the historical RSRP whose recording time is closest to the current moment is more accurate, which in turn makes the determined target transmit power more reasonable.

Optionally, the process for the terminal device to obtain the historical RSRP may be: after the terminal device obtains the RSRP recorded at the previous time of the current time, it may first determine whether the RSRP is a normal value. If it is a normal value, then indicate the RSRP at the previous time. The main antenna has not bottomed out yet. You can use the RSRP recorded at the previous moment to replace the RSRP at the current moment to calculate the target path loss. If the RSRP recorded at the last moment is not a normal value, for example -156dBm, it means that the main antenna has dropped at the last moment, and the RSRP recorded at the last moment cannot be used to estimate the target path loss. At this time, you can continue to check whether the RSRP at the previous moment before the previous moment is a normal value. If it is a normal value, you can select the normal RSRP at the previous moment to calculate the target path loss. If the RSRP recorded at the last moment is not a normal value, continue searching forward according to the time when the RSRP was recorded until a normal value is found. In some embodiments, the normal value may be a value greater than -156dBm, that is, if the RSRP is a value greater than -156dBm, the RSRP is considered to be a normal value.

Optionally, the terminal device can also determine whether the interval between the recording time of this normal historical RSRP and the current time exceeds a preset period threshold. If it does not exceed, that is, the interval between the recording time of historical RSRP and the current time is less than or equal to the preset period threshold, it means that the recording time of historical RSRP is relatively recent, and the environment in which the terminal device is located will not change significantly at this time. The drop of the main antenna may be caused by changes in the direction of the main antenna or changes in the environment around the main antenna. Therefore, the historical RSRP of the main antenna can be used to calculate the target path loss. If the interval between the obtained normal value of the recording time of historical RSRP and the current time exceeds the preset period threshold, it means that the recording time of historical RSRP is far away, and at this time, the environment in which the terminal device is located may have experienced a major disaster. changes, the historical RSRP has no reference significance for the RSRP at the current moment, so there is no need to use the historical RSRP to determine the target path loss.

Optionally, the above-mentioned preset period threshold may be 640 milliseconds (ms) or 1 second. Usually the antenna switching period is 640ms or 1s. If the preset period threshold does not exceed the antenna switching period, it means that the main set antenna has not been switched at this time, and the target path loss can be calculated based on the historical RSRP. Optionally, if the preset period threshold exceeds the period of antenna switching, the interval between the recording time of the historical RSRP and the current moment may exceed the period of antenna switching. At this time, the main set antenna may no longer be the previous main set antenna, but is to switch to one of the diversity antennas, there is no need to use historical RSRP to calculate the target path loss.

In some embodiments, the above-mentioned historical RSRP is not necessarily the nearest normal value to the current time, but may also be an RSRP with a normal value that was recorded before the current time and is closer to the current time. For example, the terminal device can select any normal value from the RSRP recorded in the preset period before the current time (640ms or 1 second before the current time) as the historical RSRP, or use the RSRP recorded in the preset period before the current time. The average value of the normal RSRP is used as the historical RSRP, which is not limited in the embodiment of the present application. The value of the preset period here may be the above-mentioned preset period threshold.

S703. Determine the target path loss according to the historical RSRP.

The terminal device can take the historical RSRP as P _r,crs and put it into the formula PL=P _t,crs -P _r,crs to obtain the target path loss.

S704. Determine the target transmission power of the terminal device according to the target path loss.

The terminal device can put the target path loss into the above formula (1) to calculate the target transmit power of the terminal device. For the specific process, please refer to the aforementioned description of formula (1) and will not be repeated here.

In the above embodiment shown in Figure 7, when the terminal device finds that the main antenna is bottomed out, it can select the historical RSRP to replace the RSRP at the current moment to calculate the target path loss. The above historical RSRP can reflect the environment in which the terminal device was located at the historical moment, including the surrounding obstacles and the distance from the base station at the historical moment. Since there is a certain correlation between the environment at the historical moment and the environment at the current moment, selecting the historical RSRP can represent the current signal loss between the terminal device and the base station, so the target path loss obtained will not suddenly become larger. situation, there will be no situation where the transmission power suddenly increases, causing the TPC instruction to instruct the terminal device to significantly reduce the transmission power. Therefore, it can avoid the situation where the block error rate of the uplink increases and causes system freezes after the transmit power of the terminal equipment is significantly reduced, ensuring that the block error rate of the uplink meets the communication needs, ensuring smooth system operation and communication quality, and improving user experience.

Since the main antenna and other diversity antennas are in the same terminal equipment, the RSRP of the diversity antenna can also reflect the signal loss between the terminal equipment and the base station. Therefore, using the RSRP of the diversity antenna to determine the target path loss can also accurately express the terminal equipment and base station. The signal loss situation between them is used to obtain the target transmission power, as shown in Figure 8 for details. Figure 8 is an example of a specific process for determining the target transmit power based on the RSRP of the signal received by the diversity antenna provided by the embodiment of the present application, including:

S801. Determine whether the main antenna is in a communication abnormal state. If yes, execute S802.

For the specific implementation of S801, please refer to the aforementioned description of S701, which will not be described again here.

S802. Obtain the RSRP of the signal received by at least one diversity antenna.

S803. Determine the target path loss based on the RSRP of the signal received by at least one diversity antenna.

Specifically, when the main antenna is bottomed out, the terminal device can calculate the target path loss based on the RSRP of the signal received by the diversity antenna. The terminal equipment can select any normal value as P _r,crs from the RSRP of the signals received by multiple diversity antennas, and bring it into the formula PL=P _t,crs -P _r,crs to obtain the target path loss; it can also calculate multiple The average value of RSRP of the signal received by the diversity antenna. If the average value is a normal value, the average value can be used as P _r,crs and put into the formula PL=P _t,crs -P _r,crs to obtain the target path loss. ;The terminal device can also select the largest RSRP from the RSRP of signals received by multiple diversity antennas. If the largest RSRP is a normal value, then use the largest RSRP as P _r,crs and enter it into the formula PL=P _t,crs -P _r,crs gets the target path loss.

The RSRP of the signal received by the diversity antenna may be a value obtained at the current moment.

In some embodiments, the number of diversity antennas may be one or more. The RSRP of the signal received by the diversity antenna is called diversity RSRP. These diversity RSRPs may be normal values or abnormal values, and some may be normal values and the other part may be abnormal values.

Optionally, when the number of diversity antennas is multiple, the number of diversity RSRPs is also multiple. The terminal device can filter these diversity RSRPs and select normal values to form a candidate set. Specifically, the terminal device can obtain the diversity RSRP of any one of at least one diversity antenna. If the diversity RSRP is a normal value, the diversity RSRP can be added to the candidate set; if the first diversity RSRP is not a normal value, but If it is an outlier, it can be discarded without adding it to the candidate set. By performing the above filtering operations one by one on the RSRPs of the diversity antennas, the final candidate set is obtained. Then, the terminal device can select one from the candidate set to calculate the target path loss. Alternatively, the terminal device can select any one from the candidate set as P _r,crs and enter the formula PL=P _t,crs -P _r,crs to obtain the target path loss; it can also calculate multiple parameters in the candidate set. The average value of the diversity RSRP is taken as P _r,crs and put into the formula PL=P _t,crs -P _r,crs to obtain the target path loss.

Optionally, if the maximum RSRP selected by the terminal device from the RSRPs of multiple diversity antennas is not a normal value, it means that all antennas are bottomed out, and there is no need to calculate the target path loss. At this time, the terminal device can directly transmit according to the maximum allowed maximum transmit power, that is, use the maximum transmit power corresponding to the default power level of the terminal device's current working bandwidth to transmit signals. Usually, according to the provisions of the communication protocol, the terminal equipment corresponds to a default power level in different working bandwidths, and each default power level corresponds to a maximum transmit power. When a terminal device operates under a working bandwidth, the transmit power cannot exceed the maximum transmit power corresponding to the default power level of the working bandwidth. The terminal device uses the maximum transmit power corresponding to the default power level of the current working bandwidth of the terminal device to transmit, that is, directly transmits according to the maximum allowable transmit power to ensure that the communication quality can be guaranteed as much as possible even if a valid RSRP cannot be obtained. .

When the number of diversity antennas is 1, it is directly determined whether the RSRP of the diversity antenna is a normal value. If it is a normal value, the target path loss can be calculated based on the RSRP of the diversity antenna; if it is not a normal value, it means that the diversity antenna has also dropped to the bottom, and there is no need to calculate the target path loss. The terminal device can directly use the maximum allowable transmit power at full capacity. Transmit, that is, use the maximum transmit power corresponding to the default power level of the current working bandwidth of the terminal device to transmit (that is, the maximum transmit power corresponding to the current working bandwidth) to ensure that even if a valid RSRP cannot be obtained, it can still be transmitted as much as possible. Ensure communication quality. It should be noted that when the preset abnormal value is -156dBm, the normal value can be other values not equal to -156dBm, such as -110dBm, -120dBm and other values.

In the above embodiment, when the main antenna drops, the terminal device will no longer directly calculate the target path loss based on the RSRP of the main antenna when the main antenna drops. Instead, it will calculate the target path loss based on the RSRP of the diversity antenna. Losses are estimated. Since the main antenna and other diversity antennas are in the same terminal equipment, the RSRP of the diversity antenna can also reflect the signal loss between the terminal equipment and the base station. Therefore, using the RSRP of the diversity antenna to determine the target path loss can also accurately express the terminal equipment and base station. signal loss. The target path loss calculated based on the RSRP of the diversity antenna will not suddenly increase, and the transmission power will not suddenly increase causing the TPC instruction to instruct the terminal device to significantly reduce the transmission power. Therefore, it can avoid the situation where the block error rate of the uplink increases and causes system freezes after the transmit power of the terminal equipment is significantly reduced, ensuring that the block error rate of the uplink meets the communication needs, ensuring smooth system operation and communication quality, and improving user experience.

If the above-mentioned main set antenna is in a normal communication state, that is, no bottoming occurs, the RSRP of the main set antenna can be used as P _r,crs and put into the formula PL=P _t,crs -P _r,crs to obtain the target path loss. The main antenna is in a normal communication state, which can be the state when the signal-to-noise ratio or signal-to-noise-to-interference ratio of the CRS signal received by the terminal device is greater than or equal to -20dB, or the RSRP of the main antenna is greater than -156dBm. For example -115dBm.

S804. Determine the target transmission power of the terminal device according to the target path loss.

The terminal device can put the target path loss into the above formula (1) to calculate the target transmit power of the terminal device. For the specific process, please refer to the aforementioned description of formula (1) and will not be repeated here.

The technical solution described in the above embodiment of Figure 8 is a specific process in which the terminal device determines the target transmit power based on the RSRP of the signal received by the diversity antenna. The terminal equipment can use the above-mentioned embodiment of Figure 8 alone to determine the target transmission power, that is, directly determine the target path loss based on the RSRP of the diversity antenna, without the need to use the RSRP of the diversity antenna to determine the target transmission when the historical RSRP does not meet the requirements. power. In other embodiments, the terminal device can also combine S802 and S803 in the embodiments of Figure 7 and Figure 8, that is, when the historical RSRP does not meet the requirements, for example, the interval between the recording time of the historical RSRP and the current moment When the preset period threshold is exceeded, the RSRP of the diversity antenna is used to determine the target transmit power.

If the historical RSRP of the main set antenna is used alone to calculate the target transmit power, when the main set antenna bottoms out for a long time, the historical RSRP may not be obtained, or the historical RSRP obtained cannot represent the actual signal loss at the current moment. This results in inaccurate target path loss calculation, which in turn affects the rationality of the target transmission power. Based on this, the terminal device may first determine whether the interval between the recording time of the historical RSRP and the current time exceeds the preset period threshold. If the interval between the recording time of the historical RSRP and the current moment does not exceed the preset period threshold, the historical RSRP can be used as P _r,crs and put into the formula PL=P _t,crs -P _r,crs to obtain the target path loss, And use formula (1) to calculate the target transmission power. If the interval between the recording time of historical RSRP and the current moment exceeds the preset period threshold, continue to use the maximum diversity RSRP as P _r,crs and enter it into the formula PL=P _t,crs -P _r,crs to obtain the target path loss, And use formula (1) to calculate the target transmission power. The method of calculating the target path loss by combining the historical RSRP of the main antenna and the maximum diversity RSRP avoids the inaccurate calculation of the target path loss caused by using the historical RSRP alone, and can improve the accuracy of the target path loss.

In some embodiments, the terminal device may also first obtain the largest diversity RSRP among the RSRPs of signals received by at least one diversity antenna. If the maximum diversity RSRP is not a normal value, the historical RSRP can be obtained; if the interval between the recording time of the historical RSRP and the current moment is less than or equal to the preset period threshold, the target path loss can be determined based on the historical RSRP, and formula (1) Calculate target transmit power. That is, the embodiment of the present application does not limit the order of whether to first determine whether the interval between the recording time of the historical RSRP and the current time is greater than the preset period threshold, or whether to first determine whether the maximum diversity RSRP is a normal value.

In order to describe the technical solution of the present application more completely, the following uses a specific embodiment to describe in detail the process of how to determine the target transmit power based on historical RSRP or diversity RSRP. As shown in Figure 9, it includes:

S901. Identify the SNR or RSRP of the signal received by the main antenna, and determine whether the main antenna is bottomed out. If not, execute S902A; if yes, execute S902B.

For the specific implementation of step S901, please refer to the detailed description of S701, which will not be described again here.

S902A: Determine the target path loss according to the RSRP of the signal received by the main antenna. After that, S905 is executed.

Specifically, the terminal device can take the RSRP of the signal received by the main antenna as P _r,crs and put it into the formula PL=P _t,crs -P _r,crs to calculate the target path loss.

S902B: Determine whether the recording time of the historical RSRP of the main antenna is less than T1 from the current time. The historical RSRP is the RSRP of the main set antenna recorded by the terminal device before the current time. If yes, execute S903A; if not, execute S903B.

It should be noted that the historical RSRP is a normal value.

S903A. Use historical RSRP to calculate the target path loss. After that, S905 is executed.

S903B. Determine whether the largest one in the diversity RSRP is a normal value. If not, execute S904A; if yes, execute S904B.

S904A: Determine the maximum transmit power corresponding to the default power level of the current working bandwidth as the uplink transmit power.

S904B: Calculate the target path loss according to the largest one among the diversity RSRPs. After that, S905 is executed.

The terminal equipment can select the largest one as P _r,crs from the RSRP of the signal received by at least one diversity antenna, and put it into the formula PL=P _t,crs -P _r,crs to obtain the target path loss.

S905. According to the target path loss, use the above formula (1) to determine the uplink transmission power (that is, the target transmission power).

In some embodiments, the terminal device may not pay attention to the historical RSRP, but determine the uplink transmit power of the uplink terminal device solely based on the RSRP of the signal received by the diversity antenna. In order to describe the technical solution of the present application more completely, the process of how to determine the target transmit power according to the diversity RSRP is described in detail below using a specific embodiment. As shown in Figure 10, it includes:

S1001. Identify the SNR or RSRP of the signal received by the main antenna, and determine whether the main antenna is bottomed out. If not, execute S1002A; if yes, execute S1002B.

For a detailed description of S1001, please refer to the description of the aforementioned step S701, and will not be described again here.

S1002A. Determine the target path loss based on the RSRP of the signal received by the main antenna. After that, S1004 is executed.

Specifically, the terminal device can take the RSRP of the signal received by the main antenna as P _r,crs and put it into the formula PL=P _t,crs -P _r,crs to calculate the target path loss.

S1002B. Determine whether the maximum value in the diversity RSRP of the diversity antenna is a normal value. If yes, execute S1003A; if not, execute S1003B.

The above diversity RSRP is the RSRP of the signal received by the diversity antenna, and each diversity antenna corresponds to a diversity RSRP.

S1003A. Determine the target path loss according to the maximum value in the diversity RSRP. After that, S1004 is executed.

The terminal equipment can select the largest one as P _r,crs from the RSRP of the signal received by at least one diversity antenna, and put it into the formula PL=P _t,crs -P _r,crs to obtain the target path loss.

S1003B. Determine the maximum transmit power corresponding to the default power level of the current working bandwidth as the uplink transmit power.

S1004. According to the target path loss, use formula (1) to determine the uplink transmission power.

In the above-mentioned embodiments of FIG. 9 and FIG. 10 , the implementation principles and technical effects of each step can be referred to the description of the foregoing embodiments, and will not be described again here.

Optionally, based on the above embodiment of Figure 10, when the maximum value in the diversity RSRP is not a normal value, the terminal device can also determine the target path loss based on the historical RSRP of the main antenna.

If each antenna on the terminal device is in an abnormal communication state, the terminal device can transmit the maximum transmit power corresponding to the default power level of the current working bandwidth of the terminal device as the target transmit power. When each antenna of the terminal device is in an abnormal communication state, the signal-to-noise ratio of the CRS received on each antenna is less than -20dBm, or the RSRP corresponding to each antenna is an abnormal value, such as -156dBm, that is Each antenna is in a bottomed state. At this time, the terminal device directly transmits at full capacity according to the maximum transmit power corresponding to the default power level of the terminal device's current working bandwidth. There is no need to calculate the target path loss, which reduces the amount of calculation and ensures communication quality as much as possible.

The method for determining whether the antenna is in a communication abnormal state may refer to the description in the foregoing embodiments, and will not be described again.

Examples of the methods provided in this application are detailed above. It can be understood that, in order to implement the above functions, the corresponding device includes corresponding hardware structures and/or software modules for performing each function. Persons skilled in the art should easily realize that, with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving the hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

This application can divide the transmit power determining device into functional modules according to the above method examples. For example, each function can be divided into functional modules, or two or more functions can be integrated into one module. The above integrated modules can be implemented in the form of hardware or software function modules. It should be noted that the division of modules in this application is schematic and is only a logical function division. In actual implementation, there may be other division methods.

Figure 11 shows a schematic structural diagram of a transmission power determination device provided by this application. Device 1100 includes:

The first determination module 1101 is used to determine the target path loss according to the target reference signal received power RSRP when it is determined that the main antenna is in a communication abnormal state; the communication abnormal state includes at least one of the following conditions: the main antenna The signal-to-noise ratio of the signal received by the collector antenna is less than the preset signal-to-noise ratio threshold, the signal-to-noise-to-interference ratio of the signal received by the main collector antenna is less than the preset signal-to-noise-to-interference ratio threshold, and the signal received by the main collector antenna is The RSRP is equal to the preset RSRP abnormal value; the target RSRP is greater than the preset RSRP abnormal value; and the target transmission power of the terminal device is determined according to the target path loss.

The second determination module 1102 is configured to determine the target transmission power of the terminal device according to the target path loss.

In some embodiments, the target RSRP includes the historical RSRP of the main set antenna, and the historical RSRP is the RSRP of the signal received by the main set antenna before the current moment. The second determination module 1102 is specifically used to Based on the historical RSRP, the target path loss is determined.

In some embodiments, the second determination module 1102 is specifically configured to determine the target path loss based on the historical RSRP when the interval between the recording time of the historical RSRP and the current moment is less than or equal to a preset period threshold. .

In some embodiments, the second determination module 1102 is further configured to determine, when the interval between the recording time of the historical RSRP and the current moment is greater than the preset period threshold, based on the RSRP of the at least one diversity antenna. Describe the target path loss.

In some embodiments, the preset period threshold is 640 milliseconds or 1 second.

In some embodiments, the target RSRP includes the RSRP of the signal received by the at least one diversity antenna, and the second determination module 1102 is specifically configured to determine the RSRP of the signal received by the at least one diversity antenna. Target path loss.

In some embodiments, the second determination module 1102 is specifically configured to obtain a first diversity RSRP, which is the largest one among the RSRPs of signals received by the at least one diversity antenna, or the first diversity RSRP. Diversity RSRP is the average RSRP of the signal received by the at least one diversity antenna; when the first diversity RSRP is greater than the preset RSRP abnormal value, the target path loss is determined based on the first diversity RSRP. .

In some embodiments, the preset signal-to-noise ratio threshold is -20dBm, the preset signal-to-noise-to-interference ratio threshold is -20dBm, and the preset RSRP abnormal value is -156dBm.

In some embodiments, the second determination module 1102 is further configured to determine that the target transmit power is the current operating bandwidth of the terminal device when it is determined that both the main antenna and the at least one diversity antenna are in a communication abnormal state. The corresponding maximum transmit power.

The specific manner in which the device 1100 performs the transmission power determination method and the beneficial effects produced can be found in the relevant descriptions in the method embodiments, and will not be described again here.

An embodiment of the present application also provides an electronic device, including the above processor. The electronic device provided in this embodiment may be the terminal device 100 shown in Figure 1, and is used to perform the above transmission power determination method. In the case of an integrated unit, the terminal device may include a processing module, a storage module and a communication module. The processing module may be used to control and manage the actions of the terminal device. For example, it may be used to support the terminal device in executing steps performed by the display unit, the detection unit and the processing unit. The storage module can be used to support terminal devices to execute stored program codes and data. The communication module can be used to support communication between the terminal device and other devices.

The processing module may be a processor or a controller. It may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with this disclosure. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, and so on. The storage module may be a memory. The communication module can specifically be a radio frequency circuit, a Bluetooth chip, a Wi-Fi chip and other devices that interact with other terminal devices.

In one embodiment, when the processing module is a processor and the storage module is a memory, the terminal device involved in this embodiment may be a device with the structure shown in Figure 1 .

Embodiments of the present application also provide a computer-readable storage medium. A computer program is stored in the computer-readable storage medium. When the computer program is executed by a processor, it causes the processor to execute any of the above embodiments. method for determining transmit power.

An embodiment of the present application also provides a computer program product. When the computer program product is run on a computer, it causes the computer to perform the above related steps to implement the transmission power determination method in the above embodiment.

Among them, the electronic devices, computer-readable storage media, computer program products or chips provided in this embodiment are all used to execute the corresponding methods provided above. Therefore, the beneficial effects they can achieve can be referred to the above provided The beneficial effects of the corresponding methods will not be described again here.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be combined or can be integrated into another device, or some features can be ignored, or not implemented. Another point is that the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, indirect coupling or communication connection of devices or units, and the replacement unit may or may not be physically separated, as The component displayed by the unit can be one physical unit or multiple physical units, that is, it can be located in one place, or it can be distributed to multiple different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

Integrated units may be stored in a readable storage medium if they are implemented in the form of software functional units and sold or used as independent products. Based on this understanding, the technical solutions of the embodiments of the present application are essentially or contribute to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the software product is stored in a storage medium , including several instructions to cause a device (which can be a microcontroller, a chip, etc.) or a processor to execute all or part of the steps of the methods of various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes.

The above contents are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present application, and should are covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (11)

1. A method of transmit power determination, applied to a terminal device, the terminal device comprising a main set of antennas and at least one diversity antenna, the method comprising:

when the main set antenna is in a communication abnormal state, determining target path loss according to target Reference Signal Received Power (RSRP), wherein the target RSRP comprises historical RSRP of the main set antenna, and the historical RSRP is the RSRP of signals received by the main set antenna before the current moment;

the state of communication abnormality includes at least one of the following conditions: the signal to noise ratio of the signals received by the main set antenna is smaller than a preset signal to noise ratio threshold, the signal to noise plus interference ratio of the signals received by the main set antenna is smaller than a preset signal to noise plus interference ratio threshold, and the RSRP of the signals received by the main set antenna is equal to a preset RSRP abnormal value;

The target RSRP is larger than the preset RSRP abnormal value;

and determining the target transmitting power of the terminal equipment according to the target path loss.

2. The method of claim 1, wherein the determining the target path loss from the target RSRP comprises:

and determining the target path loss according to the historical RSRP.

3. The method of claim 2, wherein said determining said target path loss from said historical RSRP comprises:

and when the interval between the recording time of the historical RSRP and the current moment is smaller than or equal to a preset time period threshold, determining the target path loss according to the historical RSRP.

4. The method of claim 3, wherein said determining said target path loss from said historical RSRP further comprises:

and when the interval between the recording time of the historical RSRP and the current moment is larger than the preset time period threshold, determining the target path loss according to the RSRP of the at least one diversity antenna.

5. The method of claim 3 or 4, wherein the preset period of time threshold is 640 milliseconds or 1 second.

6. The method according to claim 1 or 4, wherein the target RSRP comprises an RSRP of signals received by the at least one diversity antenna, and wherein the determining the target path loss from the target RSRP comprises:

The target path loss is determined based on the RSRP of the signal received by the at least one diversity antenna.

7. The method of claim 6, wherein said determining the target path loss based on RSRP of signals received by the at least one diversity antenna comprises:

acquiring a first diversity RSRP, wherein the first diversity RSRP is the largest one of the RSRP of signals received by the at least one diversity antenna, or the first diversity RSRP is the average value of the RSRP of the signals received by the at least one diversity antenna;

and when the first diversity RSRP is larger than the preset RSRP abnormal value, determining the target path loss according to the first diversity RSRP.

8. The method according to any of claims 1 to 4, 7, wherein the preset signal to noise ratio threshold is-20 dBm, and the preset RSRP anomaly value is-156 dBm.

9. A chip, wherein the chip comprises a processor; the processor is configured to read and execute a computer program stored in a memory to perform the method of any one of claims 1 to 8.

10. A terminal device, comprising: a processor, a memory, and an interface;

The processor, the memory and the interface cooperating with each other such that the terminal device performs the method of any one of claims 1 to 8; or,

the terminal device comprising the chip of claim 9.

11. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program which, when executed by a processor, causes the processor to perform the method of any of claims 1 to 8.