WO2023116048A1

WO2023116048A1 - Transmission power adjustment method, millimeter-wave terminal and storage medium

Info

Publication number: WO2023116048A1
Application number: PCT/CN2022/116836
Authority: WO
Inventors: 李龙
Original assignee: 中兴通讯股份有限公司
Priority date: 2021-12-22
Filing date: 2022-09-02
Publication date: 2023-06-29
Also published as: CN116347324A

Abstract

The present application discloses a transmission power adjustment method, a millimeter-wave terminal and a storage medium. The method comprises: if a target object is detected, acquiring a target distance value which corresponds to the target object, wherein the target distance value is a distance value between the target object and a millimeter-wave terminal in a beam direction of the current transmitted beam which is transmitted by the millimeter-wave terminal (S10); determining the maximum allowed transmission power value which corresponds to the target distance value (S20); and adjusting the current transmission power of the current transmitted beam to be less than or equal to the maximum allowed transmission power value (S30).

Description

Transmission power adjustment method, millimeter wave terminal and storage medium

Cross References to Related Applications

This application is based on a Chinese patent application with application number 202111582812.8 and a filing date of December 22, 2021, and claims the priority of this Chinese patent application. The entire content of this Chinese patent application is hereby incorporated by reference into this application.

technical field

The present application relates to the technical field of communication, for example, to a method for adjusting transmission power, a millimeter wave terminal and a storage medium.

Background technique

With the continuous development of 5G communication technology, millimeter wave technology, one of the key technologies of 5G, has become the focus of research by all parties. A terminal that uses millimeter waves for data transmission is called a millimeter wave terminal. In order to prevent the radiated energy of the millimeter-wave terminal from causing damage to human tissues, the International Standards Organization has formulated corresponding standards to limit the radiated energy of the millimeter-wave terminal when it is close to the human body. Due to the high frequency and short wavelength of the millimeter wave, the penetration of the human body is not strong, and the damage of the energy of the millimeter wave to the human body is mainly on the skin surface, so the original specific absorption rate (Specific Absorption Rate, SAR) is used to characterize radio frequency exposure value approach is no longer applicable. In international standards, Power Density (PD) is usually used to characterize the RF exposure value of millimeter waves, and there are strict requirements for power density.

In some cases, in order to ensure that the power density of the millimeter-wave terminal does not exceed the standard, the usual methods are: directly reduce the transmit power value of the millimeter-wave terminal to reduce the power density, or reduce the power density of the millimeter-wave terminal in stages within a certain time window. The transmission power value can be used to reduce the overall power density, or the transmission power value can be reduced when the capacitive sensor senses that the human body is close to the millimeter wave terminal to reduce the power density. In order to ensure that the power density does not exceed the standard, these methods usually reduce the transmit power of the millimeter wave terminal across the board, resulting in a large loss of radio frequency performance of the millimeter wave terminal.

Therefore, how to ensure that the power density does not exceed the standard and at the same time guarantee the radio frequency performance of the millimeter wave terminal has become an urgent problem to be solved.

Contents of the invention

The present application provides a transmission power adjustment method, a millimeter wave terminal and a storage medium. By determining the target distance value between the target object and the millimeter wave terminal in the beam direction of the current transmission beam, according to the maximum allowable transmission value corresponding to the target distance value The power value adjusts the transmission power of the millimeter-wave terminal, which not only ensures that the power density of the millimeter-wave terminal does not exceed the standard, but also avoids reducing the transmission power when the power density is unnecessarily reduced, ensuring the radio frequency performance of the millimeter-wave terminal.

In a first aspect, the present application provides a transmission power adjustment method, the method comprising: if a target object is detected, acquiring a target distance value corresponding to the target object, the target distance value being transmitted by a millimeter wave terminal The distance value between the target object and the millimeter wave terminal in the beam direction of the current transmission beam; determine the maximum allowable transmission power value corresponding to the target distance value; adjust the current transmission power of the current transmission beam to less than Or equal to the maximum allowable transmission power value.

In a second aspect, the present application also provides a millimeter-wave terminal, the millimeter-wave terminal includes a processor, a memory, and a human body detection sensor; the memory is used to store programs; the human body detection sensor is used to detect a target object; The processor is used to call the program in the memory, so as to realize the method for adjusting the transmission power as described above.

In a third aspect, the present application also provides a storage medium for readable storage, the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to The method for adjusting the transmission power as described above is implemented.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. Ordinary technicians can also obtain other drawings based on these drawings on the premise of not paying creative work.

FIG. 1 is a schematic diagram of a transmission power adjustment system provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of another transmission power adjustment system provided by an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a millimeter wave terminal provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of another millimeter-wave terminal provided by an embodiment of the present application;

FIG. 5 is a schematic flow chart of a transmission power adjustment method provided by an embodiment of the present application;

FIG. 6 is a schematic flowchart of a sub-step for obtaining a target distance value provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of adjusting current transmission power provided by an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The flow charts shown in the drawings are just illustrations, and do not necessarily include all contents and operations/steps, nor must they be performed in the order described. For example, some operations/steps can be decomposed, combined or partly combined, so the actual order of execution may be changed according to the actual situation.

It should be understood that the terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit the application. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural referents unless the context clearly dictates otherwise.

It should also be understood that the term "and/or" used in the description of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

In the subsequent description, use of suffixes such as 'module', 'part' or 'unit' for denoting elements is only for facilitating the description of the present application and has no specific meaning by itself. Therefore, 'module', 'part' or 'unit' may be used in combination.

Embodiments of the present application provide a method for adjusting transmission power, a millimeter wave terminal, and a storage medium. Wherein, the transmission power adjustment method can be applied to the millimeter wave terminal, by determining the target distance value between the target object and the millimeter wave terminal in the beam direction of the current transmission beam, according to the maximum allowable transmission power value corresponding to the target distance value The adjustment of the transmit power of the millimeter-wave terminal not only ensures that the power density of the millimeter-wave terminal does not exceed the standard, but also avoids reducing the transmit power when the power density is unnecessarily reduced, ensuring the radio frequency performance of the millimeter-wave terminal.

It should be noted that the millimeter wave is an electromagnetic wave with a wavelength at the millimeter level. The millimeter wave echo is used to detect the approaching object, and the detection accuracy can reach the millimeter wave level.

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of a transmission power adjustment system provided by an embodiment of the present application. As shown in Figure 1, the millimeter wave terminal is equipped with a detection control unit, at least one transceiver module, an antenna array, and a human body detection sensor. Wherein, the transceiver module includes a transmitting module and a receiving module.

It should be noted that millimeter wave terminals are usually equipped with multiple transceiver modules and antenna arrays, and one or more transceiver modules and antenna arrays are working at the same time, and the beam direction of the transmit beam emitted by the millimeter wave terminal can point to different directions. Angle. The current transmit beam transmitted by the millimeter wave terminal refers to the transmit beam transmitted by the transmit module in the currently working transceiver module and the corresponding antenna array.

Exemplarily, when the millimeter-wave terminal is working, the current transmit beam transmitted by the transmitting module in the working transceiver module and the corresponding antenna array propagates to the target object, and the reflected echo beam passes through the receiving module in the transmitting and receiving module. The module and the corresponding antenna array receive. At the same time, the millimeter wave terminal can also detect the target object through the human body detection sensor; if the human body detection sensor detects the target object, the detection control unit measures the power ratio between the current transmit power of the current transmit beam and the received power of the echo beam, and according to the power The ratio determines the target distance value from the human body to the millimeter wave terminal; based on the preset correspondence between the distance value and the maximum allowable transmit power value, determine the maximum allowable transmit power value corresponding to the target distance value, and then adjust the current transmit power of the millimeter wave terminal The current transmission power of the beam does not exceed the maximum allowable transmission power value, so as to ensure that the power density does not exceed the standard, and at the same time, it can also ensure the radio frequency performance of the millimeter wave terminal.

It should be noted that the current transmit power refers to the power value of the current transmit beam transmitted by the millimeter wave terminal during the network connection process between the millimeter wave terminal and the base station; the current transmit power is a dynamically changing value, and the current transmit power is controlled by the base station . It can be understood that when the base station sets the current transmit power of the millimeter wave terminal, if the millimeter wave terminal excessively reduces the current transmit power in order to keep the power density within the standard, the radio frequency performance of the millimeter wave terminal will be reduced.

In the embodiment of the present application, the target object refers to the protected object required by the relevant laws and regulations of radio frequency exposure value test certification, usually the human body.

Exemplarily, the human body detection sensor may be an infrared sensor, an odor sensor, a body temperature sensor, and the like. Human detection sensors are used to detect the presence of a target object, for example, to detect whether there is a human body around the mmWave terminal; thus, it can be determined whether the echo beam is reflected by a human body or an inanimate object. In addition, it is also possible to determine whether the user is detected by detecting the mobile terminal carried by the user. Wherein, the mobile terminal may be a mobile phone, a tablet computer, a smart watch, a smart bracelet, and the like. For example, when the communication connection with the mobile terminal is successfully established, it is determined that the user is detected.

It can be understood that the size of the power density is adjusted by the size of the transmission power, wherein, at a certain distance, the higher the transmission power, the higher the power density; Exceeding the maximum allowable transmission power value can make the power density not exceed the standard. It should be noted that the power density is the radio frequency exposure value of the millimeter wave terminal, and its unit is watts per square meter (W/m ² ) or milliwatts per square centimeter (mW/cm ² ).

Please refer to FIG. 2 . FIG. 2 is a schematic diagram of another transmission power adjustment system provided by an embodiment of the present application. As shown in Figure 2, a set of receiving modules and antenna arrays can be added to the millimeter wave terminal. When the millimeter wave terminal is working, the current transmit beam emitted by the working transceiver module and the corresponding antenna array propagates to the target object and then reflects the echo beam, which is received by the newly added receiving module and the corresponding antenna array. The millimeter wave terminal can also detect the target object through the human body detection sensor; if the human body detection sensor detects the target object, the detection control unit measures the power ratio between the current transmit power of the current transmit beam and the received power of the echo beam, and determines the The target distance value from the human body to the millimeter-wave terminal; based on the preset correspondence between the distance value and the maximum allowable transmit power value, determine the maximum allowable transmit power value corresponding to the target distance value, and then adjust the current transmit power of the current transmit power. Exceeding the maximum allowable transmit power value not only ensures that the power density does not exceed the standard, but also ensures the radio frequency performance of the millimeter wave terminal.

By adding a set of receiving modules and antenna arrays to the millimeter wave terminal, the echo beam can be received through the newly added receiving module and antenna array without interfering with the original transceiver module and antenna array of the millimeter wave terminal. , to avoid affecting the normal operation of the original transceiver module of the millimeter wave terminal.

In the embodiment of the present application, by using the transceiver module in the millimeter wave terminal to transmit the transmit beam, the current transmit beam used when detecting the target distance value between the target object and the millimeter wave terminal and the transmit beam actually in use can be achieved The beam direction is consistent, so that the target object triggers the transmission power adjustment operation only in the beam direction of the current transmission beam, which avoids reducing the transmission power when the power density is not necessarily reduced.

It should be noted that in terminals using 5G NR Sub6G, 4G, 3G, 2G, Wi-Fi, and BT (Bluetooth) before millimeter wave terminals, capacitive sensors are usually used to reduce radio frequency exposure. However, the capacitive sensor can only work in a specific direction and distance. It needs to use the antenna radiator to judge whether the human body is approaching on a certain radiating surface, and the accuracy of the sensing distance is low. The millimeter-wave terminal uses the millimeter-wave beam for signal transmission. Since the millimeter-wave beam has a high frequency and a short wavelength, and the millimeter-wave terminal uses an array antenna to transmit the millimeter-wave beam, the directivity of the millimeter-wave beam is very strong, so the accuracy of the millimeter-wave beam does not affect the array. The processing accuracy of the antenna and the surrounding environment are extremely demanding, and it is impossible to directly hang the capacitive sensor on the antenna array for use. In addition, millimeter-wave terminals are usually equipped with multiple transceiver modules with different beam orientations. At the same time, one or more transceiver modules and antenna arrays are working, and the beam direction of the millimeter-wave beam can be dynamically adjusted within a certain angle. Therefore, if a capacitive sensor is applied to a millimeter-wave terminal, the capacitive sensor cannot accurately determine whether the current transmit power of the current transmit beam reaches the threshold of exceeding the power density; and, if the capacitive sensor is forcibly used in the millimeter-wave terminal, In order to ensure that the RF exposure value passes the index certification, the transmit power will be reduced when the power density is not necessarily reduced, resulting in the loss of the RF performance of the mmWave terminal.

Please refer to FIG. 3 . FIG. 3 is a schematic structural diagram of a millimeter wave terminal provided by an embodiment of the present application. The millimeter wave terminal 1000 may include a processor 1001, a memory 1002, a human body detection sensor 1003, a transceiver module 1004, and an antenna array 1005, wherein the processor 1001, the memory 1002, the human body detection sensor 1003, and the transceiver module 1004 may be connected through a bus, the The bus is, for example, any applicable bus such as an I2C (Inter-integrated Circuit) bus.

Wherein, the memory 1002 may include a non-volatile storage medium and an internal memory. Non-volatile storage media can store operating systems and computer programs. The computer program includes program instructions, and when the program instructions are executed, the processor 1001 may execute any method for adjusting transmission power.

Wherein, the processor 1001 is used to provide calculation and control capabilities, and support the operation of the entire millimeter wave terminal 1000 .

Among them, the human detection sensor 1003 is used to detect the target object; the transceiver module 1004 is used to transmit the transmit beam and receive the echo beam through the antenna array 1005 .

Wherein, the processor 1001 can be a central processing unit (Central Processing Unit, CPU), and the processor can also be other general processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (application specific integrated circuits, ASIC), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

Please refer to FIG. 4 . FIG. 4 is a schematic structural diagram of another millimeter wave terminal provided by an embodiment of the present application. The millimeter wave terminal 1000 may include a processor 1001, a memory 1002, a human body detection sensor 1003, a transceiver module 1004, an antenna array 1005, a receiving module 1006, and an antenna array 1007, wherein the processor 1001, the memory 1002, the human body detection sensor 1003, the transceiver The module 1004 and the receiving module 1006 can be connected via a bus, such as an I2C (Inter-integrated Circuit) bus or any suitable bus.

Wherein, the transceiver module 1004 is used for transmitting the transmitting beam through the antenna array 1005 ; and the receiving module 1006 is used for receiving the echo beam through the antenna array 1007 .

In one embodiment, the processor 1001 is used to run a computer program stored in the memory 1002, and implement the following steps when executing the computer program:

If the target object is detected, obtain a target distance value corresponding to the target object, where the target distance value is the distance between the target object and the millimeter wave terminal in the beam direction of the current transmission beam emitted by the millimeter wave terminal value; determine the maximum allowable transmit power value corresponding to the target distance value; adjust the current transmit power of the current transmit beam to be less than or equal to the maximum allowable transmit power value.

In one embodiment, the processor 1001 is configured to implement: when obtaining the target distance value corresponding to the target object:

receiving the echo beam corresponding to the current transmit beam; determining the echo parameter corresponding to the target distance value according to the current transmit beam and the echo beam; according to the preset echo parameter and the distance value The mapping relationship is to determine a distance value corresponding to the echo parameter, and determine the distance value as the target distance value.

In one embodiment, when the processor 1001 determines the echo parameter corresponding to the target distance value according to the current transmit beam and the echo beam, it is used to implement:

determining the receiving power corresponding to the echo beam; determining a power ratio between the current transmitting power corresponding to the current transmitting beam and the receiving power as the echo parameter.

In one embodiment, the processor 1001 is configured to implement:

According to the mapping relationship between the distance value corresponding to the current transmit beam and the maximum allowable transmit power value, determine the maximum allowable transmit power value corresponding to the target distance value.

In one embodiment, the millimeter wave terminal is provided with at least one transceiver module, and each transceiver module emits at least one transmit beam; before the processor 1001 realizes obtaining the target distance value corresponding to the target object, it is also used to accomplish:

Determine each transmit beam in each transceiver module as a test beam; test the echo parameters corresponding to different distance values, and obtain the mapping relationship between the echo parameters and the distance values of each of the test beams; test different The maximum allowable transmit power value corresponding to the distance value of each test beam is obtained, and the mapping relationship between the distance value of each test beam and the maximum allowable transmit power value is obtained.

In one embodiment, the processor 1001 is used to realize:

Using different distance values as the current distance values, transmitting test beams with different transmission powers, and obtaining the power density corresponding to each transmission power under the current distance value; using the corresponding power density as the transmission power of the preset power density threshold , determined as the maximum allowable transmission power value corresponding to the current distance value.

In an embodiment, when the processor 1001 adjusts the current transmit power of the current transmit beam to be less than or equal to the maximum allowable transmit power value, it is configured to:

Determine whether the maximum allowable transmit power value is less than the transmit power upper limit value of the millimeter wave terminal; when the maximum allowable transmit power value is less than the transmit power upper limit value of the millimeter wave terminal, set the current transmit power Adjust to be less than or equal to the maximum allowable transmit power value.

Determine whether the current transmit power is greater than the maximum allowable transmit power value; when the current transmit power is greater than the maximum allowable transmit power value, adjust the current transmit power to be less than or equal to the maximum allowable transmit power value .

Some implementations of the present application will be described in detail below in conjunction with the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

As shown in FIG. 5 , FIG. 5 is a schematic flowchart of a method for adjusting transmission power provided by an embodiment of the present application. The transmission power adjustment method is applied to the millimeter wave terminal. By determining the target distance value between the target object and the millimeter wave terminal in the beam direction of the current transmission beam, the millimeter wave terminal is adjusted according to the maximum allowable transmission power value corresponding to the target distance value. The adjustment of the transmit power not only ensures that the power density of the millimeter-wave terminal does not exceed the standard, but also avoids reducing the transmit power when the power density is not necessarily reduced, ensuring the radio frequency performance of the millimeter-wave terminal. The method for adjusting transmission power includes steps S10 to S30.

Step S10, if the target object is detected, obtain the target distance value corresponding to the target object, and the target distance value is the distance between the target object and the millimeter wave terminal in the beam direction of the current transmission beam emitted by the millimeter wave terminal distance between values.

It should be noted that, in the embodiment of the present application, when a target object is detected, it is judged whether it is necessary to adjust the current transmit power of the millimeter wave terminal. For example, when it is determined that the target distance value between the target object and the millimeter wave terminal in the beam direction of the current transmission beam emitted by the millimeter wave terminal is smaller than the preset distance value, determine the maximum allowable transmit power value corresponding to the target distance value, and set the current The current transmit power of the transmit beam is adjusted to be less than or equal to the maximum allowable transmit power value. Among them, the preset distance value refers to the distance value to ensure that the power density does not exceed the standard, which can be set according to the relevant regulations and requirements of radio frequency exposure value test certification, and the specific value is not limited here.

Exemplarily, whether there is a target object can be detected by a human body detection sensor in the millimeter wave terminal. It may also be determined that the target object is detected when the mobile terminal is detected. For example, when a communication connection is established with a mobile terminal carried by the target object, it is determined that the target object is detected. Among them, the millimeter wave terminal can establish a communication connection with the mobile terminal through other methods such as Bluetooth module, Wi-Fi module, 4G module, 5G module, NB-IoT module or LoRa module.

Exemplarily, when a target object is detected, it is necessary to further determine a target distance value between the target object and the millimeter wave terminal.

Please refer to FIG. 6 . FIG. 6 is a schematic flowchart of sub-steps for acquiring a target distance value provided by an embodiment of the present application, which may specifically include the following steps S101 to S103 .

Step S101. Receive an echo beam corresponding to the current transmit beam.

It should be noted that when the millimeter wave terminal is working, it can transmit the current transmit beam through the transmitting module and the corresponding antenna array, and receive the echo beam corresponding to the current transmit beam through the receiving module and the corresponding antenna array. Wherein, the echo beam is a beam returned by the current transmitting beam encountering an obstacle. Since the target object is detected, the echo beam is the beam returned by the current transmit beam encountering the target object.

Exemplarily, the target object may be mainly a human body. In this embodiment of the present application, how to adjust the current transmit power of the millimeter wave terminal is described in detail by taking the target object as an example.

Step S102 : Determine an echo parameter corresponding to the target distance value according to the transmit beam and the echo beam.

Wherein, the echo parameter is a power ratio between the current transmit power corresponding to the current transmit beam and the receive power corresponding to the echo beam.

In the embodiment of the present application, after receiving the echo beam corresponding to the current transmit beam transmitted by the millimeter wave terminal, the echo parameter corresponding to the target distance value may be determined according to the current transmit beam and the echo beam.

It should be noted that different distance values correspond to different echo parameters. Wherein, in the beam direction of the current transmitting beam, the greater the distance value, the greater the echo parameter. When the echo parameter is small, it means that the target distance value between the target object and the millimeter wave terminal is small.

By obtaining the target distance value corresponding to the target object when the target object is detected, the distance value between the target object and the millimeter wave terminal in the beam direction of the current transmission beam emitted by the millimeter wave terminal can be obtained, and the target object can be realized in the current transmission beam. The transmit power adjustment operation is triggered only in the beam direction of the beam, which avoids reducing the transmit power when the power density is unnecessarily reduced.

In some embodiments, determining the echo parameter corresponding to the target distance value for the current transmit beam and the echo beam may include: determining the received power corresponding to the echo beam; combining the current transmit power and the received power corresponding to the current transmit beam The power ratio between is determined as the echo parameter.

Exemplarily, when the current transmit beam is transmitted, the current transmit power corresponding to the current transmit beam can be detected; when the echo beam is received, the received power corresponding to the echo beam can be detected; The power ratio of is determined as the echo parameter corresponding to the target distance value. For example, if the current transmit power is P _a and the receive power is P _b , then the power ratio is

That is, the echo parameter is

By determining the echo parameters corresponding to the target distance value according to the current transmit beam and the echo beam, the distance value between the target object and the millimeter wave terminal in the beam direction of the current transmit beam transmitted by the millimeter wave terminal can be determined according to the echo parameters . It can be understood that since the echo beam is the beam returned by the current transmission beam encountering the target object, the target object is in the beam direction of the current transmission beam, so that the target object and the millimeter wave terminal in the beam direction of the current transmission beam can be determined distance between values.

It should be noted that since the millimeter wave beam is directional, the power density is not only related to the target distance between the target object and the millimeter wave terminal, but also related to the beam direction of the current transmitting beam. In the embodiment of the present application, by determining the target distance value based on the echo beam corresponding to the current transmit beam transmitted by the millimeter wave terminal, the current transmit beam used when detecting the target distance value between the target object and the millimeter wave terminal and the actual use The transmit beams in are consistent in the beam direction, and then the transmit power adjustment operation can be triggered only when the target object is in the beam direction of the current transmit beam. It can be understood that by triggering the operation of adjusting the transmission power in the beam direction of the current transmission beam, the operation of adjusting the transmission power may not be triggered when the target object is not in the beam direction, thereby reducing unnecessary reduction in power density. The transmission power is also reduced to ensure the radio frequency performance of the millimeter wave terminal. In existing terminals that use capacitive sensors to reduce radio frequency exposure, when a target object is detected approaching the terminal in any direction, the current transmit power adjustment operation will be triggered, that is, when the target object is not in the beam direction of the current transmit beam When , the current transmission power adjustment operation will also be triggered, so that the transmission power will be reduced when the power density is not necessary to be reduced.

Step S103: Determine a distance value corresponding to the echo parameter according to a preset mapping relationship between the echo parameter and the distance value, and determine the distance value as the target distance value.

Exemplarily, according to the mapping relationship between the echo parameter corresponding to the current transmitting beam and the distance value, the distance value corresponding to the echo parameter is determined, and the distance value is determined as the target distance value.

Wherein, the data mapping table corresponding to the current transmitting beam can be obtained, and the data mapping table includes the mapping relationship between the echo parameters corresponding to the current transmitting beam and the distance value, of course, the data mapping table can also include echo parameters corresponding to other transmitting beams The mapping relationship with the distance value.

It should be noted that the data mapping table is generated by measuring each transmit beam of each transceiver module in the millimeter wave terminal in advance. In the embodiment of this application, how to generate the data mapping table will be described in detail.

In some embodiments, before obtaining the target distance value corresponding to the target object, it may also include: determining each transmit beam in each transceiver module as a test beam; testing echo parameters corresponding to different distance values, and obtaining each The mapping relationship between the echo parameters of each test beam and the distance value; the maximum allowable transmission power value corresponding to different distance values is tested, and the mapping relationship between the distance value and the maximum allowable transmission power value of each test beam is obtained.

Exemplarily, the millimeter wave terminal is provided with at least one transceiver module, and each transceiver module emits at least one transmit beam. It should be noted that the millimeter wave terminal is equipped with multiple transceiver modules with different beam orientations, such as transceiver module A, transceiver module B, transceiver module C, etc., and the working parameters of each transceiver module may be different. . At the same time, each transceiver module defines multiple transmit beams with different gains and transmit directions; for example, transceiver module A defines transmit beam a1, transmit beam a2, transmit beam a3, etc.; transceiver module B defines transmit beam b1, transmit beam b2, transmit beam b3, etc.; the transceiver module C defines transmit beam c1, transmit beam c2, transmit beam c3, etc. Therefore, it is necessary to test the mapping relationship between the echo parameters corresponding to each transmitting beam in each transceiver module and the distance value, and to test the mapping relationship between the distance value corresponding to each transmitting beam and the maximum allowable transmitting power value , and then obtain the data mapping table corresponding to each transmit beam in each transceiver module. In the embodiment of the present application, taking the test beam as the transmit beam a1 in the transceiver module A as an example, how to test and obtain the data mapping table corresponding to the transmit beam a1 is described.

Exemplarily, for transmitting beam a1, different distance values can be set, for example, distance value S1, distance value S2, distance value S3, etc., and a human body simulation model is set at the position corresponding to each distance value; then, by The transmit beam a1 in the millimeter wave terminal transmits the transmit beam, respectively receives the echo beam returned by the human body simulation model of each distance value, and obtains the echo beam corresponding to each human body simulation model; according to the transmit power of the transmit beam and each person The receiving power of the echo beam corresponding to the body simulation model is determined, and the echo parameters corresponding to the positions of each human body simulation model are determined, so that the mapping relationship between the echo parameters and the distance value can be obtained. Wherein, the human body simulation model is used to simulate a real human body during the testing process. For example, the mapping relationship between the echo parameter corresponding to the transmit beam a1 and the distance value is shown in Table 1.

Table 1

By testing the echo parameters corresponding to different distance values, the accuracy of the mapping relationship between the echo parameters and the distance values of each transmitting beam can be ensured.

In some embodiments, testing the maximum allowable transmit power values corresponding to different distance values may include: using different distance values as the current distance values, transmitting multiple test beams with different transmit powers, and obtaining each The power density corresponding to each transmit power; the transmit power whose corresponding power density is the preset power density threshold is determined as the maximum allowable transmit power value corresponding to the current distance value.

In the embodiment of the present application, the maximum allowable transmit power values corresponding to different distance values can be tested through the millimeter wave power density test system. Exemplarily, for the transmit beam a1, the transmit beam a1 may be transmitted with different transmit powers, for example, when the transmit beam a1 is transmitted, the transmit power of the transmit beam a1 may be gradually increased. Then, measure the power density corresponding to each transmission power under the current distance value; determine the transmission power whose corresponding power density is the preset power density threshold as the maximum allowable transmission power value corresponding to the current distance value.

It should be noted that the preset power density threshold refers to the maximum power density value allowed to ensure human safety under the current distance value. Wherein, the preset power density threshold can be set according to the index requirements of international standards.

Exemplarily, the maximum allowable transmission power values corresponding to different distance values are respectively tested to obtain a mapping relationship between the distance value and the maximum allowable transmission power value. Wherein, the mapping relationship between the distance value corresponding to the transmit beam a1 and the maximum allowable transmit power value is shown in Table 2.

Table 2

By testing the maximum allowable transmit power values corresponding to different distance values, the mapping relationship between the distance value of each transmit beam and the maximum allowable transmit power value can be accurately obtained.

Exemplarily, according to the mapping relationship between the echo parameter and the distance value in Table 1 and the mapping relationship between the distance value and the maximum allowable transmission power value in Table 2, the data mapping table corresponding to the transmission beam a1 can be obtained, as shown in Table 3. Wherein, one data mapping table may be set for each transmit beam, or one data mapping table may be set for all transmit beams.

table 3

Exemplarily, if the current transmission beam is the transmission beam a1 and the echo parameter is W1, the distance value of the echo parameter corresponding to the target distance value W1 can be determined according to the data mapping table corresponding to the transmission beam a1, and then the target can be determined The distance value is S1.

Exemplarily, if the current transmitting beam is the transmitting beam a1 and the echo parameter is W2, the distance value of the echo parameter corresponding to the target distance value W2 can be determined according to the data mapping table corresponding to the transmitting beam a1, and then the target can be determined The distance value is S2.

Step S20, determining the maximum allowable transmit power value corresponding to the target distance value.

In some embodiments, determining the maximum allowable transmit power value corresponding to the target distance value may include: determining the maximum allowable transmit power value corresponding to the target distance value according to the mapping relationship between the distance value corresponding to the current transmit beam and the maximum allowable transmit power value. power value.

Exemplarily, if the current transmission beam is the transmission beam a1, based on the data mapping table corresponding to the transmission beam a1, according to the mapping relationship between the distance value of the transmission beam a1 and the maximum allowable transmission power value, determine the target distance value corresponding to The maximum allowable transmit power value. For example, if the target distance value is S1, it may be determined that the maximum allowable transmission power value corresponding to the target distance value S1 is P1. For example, if the target distance value is S3, it may be determined that the maximum allowable transmission power value corresponding to the target distance value S3 is P3.

By determining the maximum allowable transmit power value corresponding to the target distance value, the maximum allowable transmit power value can be dynamically and smoothly determined according to the location of the target object.

Step S30, adjusting the current transmit power to be less than or equal to the maximum allowable transmit power value.

It should be noted that, in the embodiment of this application, by adjusting the current transmission power of the millimeter wave terminal to be less than or equal to the maximum allowable transmission power value, not only the power density of the millimeter wave terminal is not exceeded, but also one size fits all can be avoided The current transmit power of the millimeter-wave terminal is greatly reduced, which ensures the radio frequency performance of the millimeter-wave terminal.

In the existing technology for reducing the radio frequency exposure value of the millimeter wave terminal, in order to ensure that the power density does not exceed the standard, the transmit power of the millimeter wave terminal is generally reduced across the board. For example, in some cases, when a target object is detected, the transmit power is directly reduced or the transmit power is reduced in stages within a certain time window to reduce the power density, regardless of whether the target object is in the beam direction corresponding to the current transmit beam In addition, it does not consider whether the power density at the location of the target object exceeds the standard, so it is easy to reduce the transmission power when the power density is not necessary, which greatly reduces the radio frequency performance of the millimeter wave terminal.

In some embodiments, adjusting the current transmit power of the current transmit beam to be less than or equal to the maximum allowable transmit power value may include: determining whether the maximum allowable transmit power value is less than the transmit power upper limit value of the millimeter wave terminal; when the maximum allowable transmit power value When the power value is less than the upper limit value of the transmission power of the millimeter wave terminal, the current transmission power is adjusted to be less than or equal to the maximum allowable transmission power value.

It should be noted that the transmit power upper limit refers to the maximum transmit power that the millimeter wave terminal itself can generate. It can be understood that when the maximum allowable transmission power value is greater than the upper limit value of the transmission power, if the millimeter wave terminal transmits the transmission beam at the upper limit value of the transmission power, the power density at the location of the target object will not exceed the standard, and the target object is safe . Therefore, when the maximum allowable transmission power value is greater than the transmission power upper limit value of the millimeter wave terminal, there is no need to adjust the current transmission power of the millimeter wave terminal.

Please refer to FIG. 7. FIG. 7 is a schematic diagram of adjusting the current transmission power provided by the embodiment of the present application. As shown in FIG. 7, the millimeter wave terminal activates the human body detection sensor for detection. The target distance value between millimeter wave terminals, and determine the maximum allowable transmit power value corresponding to the target distance value; then, determine whether the maximum allowable transmit power value is less than the transmit power upper limit value of the millimeter wave terminal, when the maximum allowable transmit power value is less than When determining the upper limit of the transmission power of the millimeter-wave terminal, determine whether the current transmission power is greater than the maximum allowable transmission power value; when the current transmission power is greater than the maximum allowable transmission power value, adjust the current transmission power to be less than or equal to the maximum allowable transmission power value.

In the embodiment of the present application, by periodically detecting the target object and detecting the target distance value between the target object and the millimeter wave terminal, it is possible to dynamically and smoothly determine the maximum allowable transmission power value according to the location of the target object, Furthermore, the current transmit power of the millimeter-wave terminal can be adjusted according to the maximum allowable transmit power value, so as to reduce the loss of radio frequency performance as much as possible.

Exemplarily, when the maximum allowable transmit power value is less than the transmit power upper limit value, the current transmit power of the millimeter wave terminal is adjusted to be less than or equal to the maximum allowable transmit power value. For example, if the maximum allowable transmission power value is 10dBm and the transmission power upper limit value is 12dBm, the current transmission power of the millimeter wave terminal can be adjusted to 10dBm or less than 10dBm. For another example, if the maximum allowable transmit power value is 10 dBm and the transmit power upper limit value is 8 dBm, there is no need to adjust the current transmit power of the millimeter wave terminal. Because, even if the millimeter wave terminal transmits the transmission beam with the current transmission power of 8dBm, the power density at the location of the target object will not exceed the standard.

By determining whether the maximum allowable transmission power value is less than the upper limit value of the transmission power of the millimeter-wave terminal, the transmission power of the millimeter-wave terminal can be adjusted only when the maximum allowable transmission power value is less than the upper limit value of the transmission power, so as to avoid directly reducing the current The transmission power ensures the radio frequency performance of the millimeter wave terminal.

In some implementations, adjusting the current transmit power of the current transmit beam to be less than or equal to the maximum allowable transmit power value may include: determining whether the current transmit power is greater than the maximum allowable transmit power value; when the current transmit power is greater than the maximum allowable transmit power value , adjust the current transmit power to be less than or equal to the maximum allowable transmit power value.

It should be noted that when the maximum allowable transmit power value is less than the upper limit value of transmit power, if the current transmit power of the millimeter-wave terminal is greater than the maximum allowable transmit power value, the power density at the location of the target object will exceed the standard, so the current transmit power needs to be set to Adjust to be less than or equal to the maximum allowable transmit power value.

Exemplarily, if the maximum allowable transmit power value is 10dBm and the current transmit power is 11dBm, the current transmit power may be adjusted to 10dBm or less than 10dBm. For another example, if the maximum allowable transmission power value is 10 dBm and the current transmission power is 9 dBm, then the current transmission power does not need to be adjusted.

By determining whether the current transmit power is greater than the maximum allowable transmit power value, the current transmit power needs to be adjusted only when the current transmit power is greater than the maximum allowable transmit power value, avoiding directly reducing the current transmit power, and ensuring the radio frequency of the millimeter wave terminal performance.

The transmission power adjustment method, the millimeter wave terminal and the storage medium provided in the above embodiments can obtain the target in the beam direction of the current transmission beam transmitted by the millimeter wave terminal by obtaining the target distance value corresponding to the target object when the target object is detected. The distance value between the object and the millimeter-wave terminal can realize that the target object triggers the transmission power adjustment operation only in the beam direction of the current transmission beam, which avoids reducing the transmission power when the power density is not necessarily reduced; by determining the target distance value corresponding to The maximum allowable transmit power value can realize the dynamic and smooth determination of the maximum allowable transmit power value according to the location of the target object; by adjusting the current transmit power of the millimeter wave terminal to be less than or equal to the maximum allowable transmit power value, not only ensures The power density of the millimeter wave terminal does not exceed the standard, and it can also avoid reducing the current transmission power of the millimeter wave terminal across the board, ensuring the radio frequency performance of the millimeter wave terminal; by determining whether the maximum allowable transmission power value is less than the transmission power of the millimeter wave terminal The limit value can realize that the transmission power of the millimeter wave terminal is adjusted only when the maximum allowable transmission power value is less than the upper limit value of the transmission power, so as to avoid directly reducing the current transmission power and ensure the radio frequency performance of the millimeter wave terminal; by determining the current transmission power Whether the power is greater than the maximum allowable transmit power value can realize that the current transmit power needs to be adjusted only when the current transmit power is greater than the maximum allowable transmit power value, avoiding directly reducing the current transmit power, and ensuring the radio frequency performance of the millimeter wave terminal.

The embodiment of the present application also provides a storage medium for readable storage, the storage medium stores a program, the program includes program instructions, and the processor executes the program instructions to realize the embodiment of the present application Provide any method of adjusting the transmit power.

For example, the program is loaded by the processor and may perform the following steps:

Wherein, the storage medium may be an internal storage unit of the millimeter wave terminal in the foregoing embodiments, for example, a hard disk or a memory of the millimeter wave terminal. The storage medium may also be an external storage device of the millimeter wave terminal, such as a plug-in hard disk equipped on the millimeter wave terminal, a smart memory card (Smart Media Card, SMC), a secure digital card (Secure Digital Card, SD Card), Flash Card, etc.

Those of ordinary skill in the art can understand that all or some of the steps in the methods disclosed above, the functional modules/units in the system, and the device can be implemented as software, firmware, hardware, and an appropriate combination thereof.

In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical components. Components cooperate to execute. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit . Such software may be distributed on storable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As known to those of ordinary skill in the art, the term storage medium includes both volatile and nonvolatile media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules, or other data. , removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, tape, magnetic disk storage or other magnetic storage devices, or can Any other medium used to store desired information and which can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

Several embodiments of the present application have been described above with reference to the accompanying drawings, and the scope of rights of the present application is not limited thereto. Any modifications, equivalent replacements and improvements made by those skilled in the art without departing from the scope and essence of the present application shall fall within the scope of rights of the present application.

Claims

A method for adjusting transmission power, comprising:

If the target object is detected, obtain a target distance value corresponding to the target object, where the target distance value is the distance between the target object and the millimeter wave terminal in the beam direction of the current transmission beam emitted by the millimeter wave terminal value;

determining a maximum allowable transmit power value corresponding to the target distance value;

Adjusting the current transmit power of the current transmit beam to be less than or equal to the maximum allowable transmit power value.
The method for adjusting transmission power according to claim 1, wherein said obtaining the target distance value corresponding to the target object comprises:

receiving an echo beam corresponding to the current transmit beam;

determining an echo parameter corresponding to the target distance value according to the current transmit beam and the echo beam;

A distance value corresponding to the echo parameter is determined according to a preset mapping relationship between an echo parameter and a distance value, and the distance value is determined as the target distance value.
The method for adjusting transmission power according to claim 2, wherein said determining the echo parameter corresponding to the target distance value according to the current transmission beam and the echo beam comprises:

determining the received power corresponding to the echo beam;

A power ratio between the current transmit power corresponding to the current transmit beam and the received power is determined as the echo parameter.
The method for adjusting transmission power according to claim 1, wherein said determining the maximum allowable transmission power value corresponding to the target distance value comprises:

According to the mapping relationship between the distance value corresponding to the current transmit beam and the maximum allowable transmit power value, determine the maximum allowable transmit power value corresponding to the target distance value.
The method for adjusting transmission power according to any one of claims 1-4, wherein the millimeter wave terminal is provided with at least one transceiver module, and each transceiver module transmits at least one transmit beam; the acquisition of the target Before the target distance value corresponding to the object, it also includes:

Determining each transmit beam in each transceiver module as a test beam;

testing echo parameters corresponding to different distance values, and obtaining a mapping relationship between echo parameters and distance values of each of the test beams;

The maximum allowable transmit power values corresponding to different distance values are tested to obtain a mapping relationship between the distance value of each test beam and the maximum allowable transmit power value.
The method for adjusting transmission power according to claim 5, wherein said testing the maximum allowable transmission power values corresponding to different distance values includes:

Using different distance values as current distance values, transmitting test beams with different transmission powers respectively, and obtaining the power density corresponding to each transmission power under the current distance value;

The transmit power whose corresponding power density is the preset power density threshold is determined as the maximum allowable transmit power value corresponding to the current distance value.
The method for adjusting transmission power according to claim 1, wherein the adjusting the current transmission power of the current transmission beam to be less than or equal to the maximum allowable transmission power value comprises:

determining whether the maximum allowable transmission power value is less than the upper limit value of the transmission power of the millimeter wave terminal;

When the maximum allowable transmit power value is less than the transmit power upper limit value of the millimeter wave terminal, adjust the current transmit power to be less than or equal to the maximum allowable transmit power value.
The method for adjusting transmission power according to claim 1, wherein the adjusting the current transmission power of the current transmission beam to be less than or equal to the maximum allowable transmission power value comprises:

determining whether the current transmit power is greater than the maximum allowable transmit power value;

When the current transmit power is greater than the maximum allowable transmit power value, adjust the current transmit power to be less than or equal to the maximum allowable transmit power value.
A millimeter wave terminal, including a processor, a memory, and a human body detection sensor;

The memory is used to store programs;

The human detection sensor is used to detect a target object;

The processor is configured to execute the program and implement the transmission power adjustment method according to any one of claims 1 to 8 when executing the program.
A storage medium for readable storage, the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors, so as to implement any one of claims 1 to 8 A method for adjusting transmission power.