CN112470530B - Power density adjustment method, device and storage medium - Google Patents

Abstract

A method, device and storage medium for adjusting power density are provided, and the method applied to the terminal device side comprises the following steps: if the power density of the first beam of the terminal equipment exceeds a power density threshold value, the first beam is a transmitting beam of the terminal equipment, whether the terminal equipment is close to a preset target is detected, and if the terminal equipment is close to the target, the direction of the first beam faces the target, the power density of the terminal equipment facing the target is adjusted to be smaller than the power density threshold value. By the method, the power density of the terminal equipment facing the human body is regulated to be not more than a specified threshold value, and the problem that the power density of the millimeter wave terminal equipment exceeds the standard is effectively avoided.

Description

Power density adjustment method, device and storage medium

technical field

The embodiments of the present application relate to communication technologies, and in particular, to a power density adjustment method, device, and storage medium.

Background technique

With the development of mobile communication technology, the development of low-frequency spectrum resources has been very mature, and the remaining low-frequency spectrum resources can no longer meet the peak rate requirements of 10Gbit/s in the 5G era. Spectrum resources. As one of the key technologies of 5G, millimeter wave technology has become the focus of research and discussion by standard organizations and all parties in the industry chain.

Terminal equipment that uses millimeter waves for data transmission can also be called millimeter wave terminals. For millimeter wave terminals, in order to overcome large propagation losses, narrow transmit beams are generally used to concentrate energy in the direction facing the base station, and this It also causes the millimeter-wave terminal to easily form relatively strong electromagnetic radiation energy in a certain direction. In order to avoid the damage of this energy to human tissue, the International Standards Organization has also formulated corresponding standards to limit the long-term emission of the terminal in a certain direction when it is close to the human body. Radiant energy over time. Power density is an index parameter to measure the electromagnetic radiation intensity of the millimeter wave terminal to the human body. There are strict index requirements for the power density value in the standard.

Therefore, how to effectively use the radiation power of the terminal to improve the uplink coverage while ensuring that the power density does not exceed the standard is an urgent problem to be solved at present.

Contents of the invention

Embodiments of the present application provide a power density adjustment method, device, and storage medium, so as to effectively avoid the problem that the power density of millimeter wave terminal equipment exceeds a standard.

In the first aspect, the embodiment of the present application may provide a method for adjusting power density, which is applied to a terminal device, and the method includes:

If the power density in the direction of the first beam of the terminal device exceeds a power density threshold value, then detecting whether the terminal device is close to the target, where the first beam is a transmit beam of the terminal device;

If the terminal device is close to the target and the direction of the first beam is towards the target, adjusting the power density of the terminal device towards the target to be less than the power density threshold.

In the second aspect, the embodiment of the present application may also provide a method for adjusting power density, which is applied to a network device, and the method includes:

If the power density of the terminal device exceeds the power density threshold, determine whether to allow the terminal device to reduce the transmit power by the maximum power according to the transmit power of the transmit beam of the terminal device and the pre-acquired maximum power backoff value fallback value;

If the terminal device is not allowed to reduce the transmission power by the maximum power backoff value, then send second indication information to the terminal device;

Wherein, the second indication information is used to instruct the terminal device to perform beam switching.

In a third aspect, the embodiments of the present application may further provide a terminal device, including:

A detection module, configured to detect whether the terminal device is close to a target if the power density in the direction of the first beam of the terminal device exceeds a power density threshold, wherein the first beam is the target of the terminal device launch beam;

A processing module, configured to adjust the power density of the terminal device towards the target to be less than the power density threshold if the terminal device is close to the target and the direction of the first beam is towards the target.

In a fourth aspect, the embodiment of the present application may further provide a network device, including:

A processing module, configured to, if the power density of the terminal device exceeds the power density threshold value, determine whether to allow the terminal device to reduce the transmit power reducing the maximum power backoff value;

A sending module, configured to send second indication information to the terminal device if the terminal device is not allowed to reduce the transmission power by the maximum power backoff value;

Wherein, the second indication information is used to instruct the terminal device to perform beam switching.

In the fifth aspect, the embodiment of the present application may further provide a terminal device, including:

Processors, memory, interfaces for communicating with network devices;

the memory stores computer-executable instructions;

The processor executes the computer-executed instructions stored in the memory, so that the processor executes the power density adjustment method provided in any one of the first aspects.

In a sixth aspect, the embodiments of the present application may further provide a network device, including:

Processor, memory, interface for communication with terminal equipment;

the memory stores computer-executable instructions;

The processor executes the computer-executed instructions stored in the memory, so that the processor executes the power density adjustment method provided in any one of the second aspect.

In the seventh aspect, the embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, it is used to implement any one of the first aspect. The adjustment method of the power density described in the item.

In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, they are used to implement any of the following aspects of the second aspect. A method for adjusting power density.

In a ninth aspect, an embodiment of the present application provides a program, which is used to execute the method for adjusting power density as described in any one of the first aspect above when the program is executed by a processor.

In a tenth aspect, the embodiment of the present application further provides a program, which is used to execute the method for adjusting power density as described in any one of the above second aspect when the program is executed by a processor.

In an implementation manner, the foregoing processor may be a chip.

In an eleventh aspect, an embodiment of the present application provides a computer program product, including program instructions, and the program instructions are used to implement the power density adjustment method described in any one of the first aspect.

In a twelfth aspect, an embodiment of the present application provides a computer program product, including program instructions, and the program instructions are used to implement the power density adjustment method described in any one of the second aspect.

In a thirteenth aspect, the embodiment of the present application provides a chip, including: a processing module and a communication interface, where the processing module can execute the power density adjustment method described in any one of the first aspect.

Further, the chip also includes a storage module (such as a memory), the storage module is used to store instructions, and the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to perform the first aspect The adjustment method of any one of the power density.

In a fourteenth aspect, the embodiment of the present application provides a chip, including: a processing module and a communication interface, where the processing module can execute the power density adjustment method described in any one of the second aspect.

Further, the chip also includes a storage module (such as a memory), the storage module is used to store instructions, and the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module makes the processing module perform the second aspect The adjustment method of any one of the power density.

In the power density adjustment method, device, and storage medium provided in the embodiments of the present application, during the data interaction process between the terminal device and the network device, if the power density in the direction of the first beam of the terminal device exceeds the power density threshold value, the The first beam is the transmission beam of the terminal device, then detect whether the terminal device is close to the target, if the terminal device is close to the target, and the direction of the first beam is towards the target, adjust the power density of the terminal device towards the target to be less than the power Density threshold value, in this way, the power density of terminal equipment towards the human body is adjusted to not exceed the specified threshold value, effectively avoiding the problem that the power density of millimeter wave terminal equipment exceeds the standard.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1a is a schematic diagram of a beam of a millimeter-wave terminal device provided by the present application;

Figure 1b is a schematic diagram of the relationship between the beam of the millimeter wave terminal device and the human body provided by the present application;

FIG. 2 is a schematic diagram of a communication system applied in an embodiment of the present application;

FIG. 3 is a flow chart of a specific implementation of determining whether the power density exceeds the power density threshold value provided by the present application;

FIG. 4 is a flow chart of Embodiment 1 of the power density adjustment method provided by the present application;

Fig. 5a is a flow chart of Embodiment 2 of the power density adjustment method provided by the present application;

FIG. 5b is a schematic diagram of transmitting beam switching provided by the present application;

FIG. 6 is a flow chart of Embodiment 3 of the power density adjustment method provided by the present application;

FIG. 7 is a schematic structural diagram of Embodiment 1 of a terminal device provided by the present application;

FIG. 8 is a schematic structural diagram of Embodiment 2 of the terminal device provided by the present application;

FIG. 9 is a schematic structural diagram of Embodiment 3 of a terminal device provided by the present application;

FIG. 10 is a schematic structural diagram of Embodiment 4 of a terminal device provided by the present application;

FIG. 11 is a schematic structural diagram of Embodiment 1 of a network device provided by the present application;

FIG. 12 is a schematic structural diagram of Embodiment 5 of a terminal device provided by the present application;

FIG. 13 is a schematic structural diagram of Embodiment 2 of a network device provided by the present application.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this 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 terms "first", "second" and the like in the description, claims, and above-mentioned drawings of the embodiments of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein, for example, can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

Power density (English full name: Power density) is an index parameter to measure the electromagnetic radiation intensity of the millimeter wave terminal to the human body, and the unit of the power density is: w/m ² . The test of power density is generally based on the average power per unit area of the terminal equipment in a certain direction for a period of time. higher. However, in millimeter-wave terminals, in order to overcome the propagation loss, a narrow transmit beam is generally used to concentrate energy in the direction of the network device. The beam is relatively narrow, and the energy of electromagnetic radiation is also relatively concentrated. If the transmit beam is directed towards the human body, and the power density is high It is easy to cause damage to human tissues.

Fig. 1a is a schematic diagram of a beam of a millimeter-wave terminal device provided in this application; Fig. 1b is a schematic diagram of a relationship between a beam of a millimeter-wave terminal device provided in this application and a human body. As shown in Figure 1a, the figure shows the terminal equipment and the surrounding beams and the direction of the beams. , the terminal device can choose more beams for transmitting signals, but some of the beams are directed toward the human body. If the transmission power of the beam and/or the uplink transmission duration are relatively high at this time, it may cause the power density toward the human body to exceed The specified threshold value will cause damage to human tissue. Therefore, this scheme proposes a power density adjustment method to adjust the power density of terminal equipment towards the human body to not exceed the specified threshold value, so as to avoid electromagnetic radiation damage to human tissue when using terminal equipment. cause some damages. The method of this scheme can also be applied to adjust the power density when the millimeter wave affects other targets. The target can be animals, plants, other electronic equipment, etc., and different power density thresholds can be specified for each target. The technical scheme provided by this scheme can be used for adjustment, and this scheme does not limit it.

The method for adjusting the power density provided by the present application will be described below.

FIG. 2 is a schematic diagram of a communication system applied in an embodiment of the present application. As shown in FIG. 2 , the communication system includes at least a network device 11 and a terminal device 12 . It can be understood that, in an actual communication system, there may be one or more network devices 11 and terminal devices 12, and FIG. 2 only uses one as an example.

In FIG. 2, the network device 11 may be an access device in a cellular network, such as an access device in an LTE network and its evolved network, such as an evolved base station (Evolutional Node B, referred to as: eNB or eNodeB), or A relay station, or a base station in a new network system in the future, etc., the example of its coverage is the area inside the solid circle. It may also be a device such as an access point (Access Point, AP for short) in the WLAN.

The terminal device 12 may also be called a mobile terminal, user equipment (User Equipment, UE for short), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a user terminal, a terminal, a wireless communication device, a user agent, or user device. Specifically, it can be a smart phone, a cellular phone, a cordless phone, a personal digital assistant (Personal Digital Assistant, PDA) device, a handheld device with a wireless communication function or other processing device connected to a wireless modem, a vehicle device, a wearable device, and the like. In this embodiment of the present application, the terminal device has an interface for communicating with a network device (for example, a cellular network).

The power density adjustment method provided in the present application includes: the terminal device needs to detect whether the power density in the direction of the currently used transmit beam exceeds the power density threshold value (also referred to as the threshold value) specified in the standard. If the power density in the direction of the currently used transmitting beam exceeds the power density threshold, it is necessary to detect whether the terminal device is close to the target and whether the direction of the transmitting beam is facing the target. If it is determined that the terminal device is close to the target and the direction of the transmitting beam is facing target, it is necessary to reduce the power density toward the target direction, that is, to adjust the power density to lower it below the specified power density threshold.

In the implementation of this solution, it is first necessary to determine whether the power density of the terminal equipment exceeds the power density threshold. From the meaning of the aforementioned power density, we can see that the factors that affect the power density include at least: transmit power, beam width, and uplink transmission duration There are several factors to account for. In order to improve uplink coverage, millimeter-wave terminal devices generally use narrow transmit beams for transmission. Therefore, factors that affect power density include at least: transmit power and the proportion of uplink transmit time. It can be seen that the terminal device needs to determine whether the power density exceeds the power density threshold: according to the transmit power of the currently used transmit beam, and/or, the proportion of the uplink transmit duration of the transmit beam within the preset window duration , to determine whether the power density in the direction of the transmit beam exceeds a power density threshold.

The meaning of this solution includes: the terminal device can determine whether the power density exceeds the power density threshold according to at least one of the transmit power of the transmit beam and the uplink transmit duration ratio. That is, there is a possibility that the transmit power does not exceed the specified transmit power threshold, but the power density may exceed the power density threshold because the uplink transmit time takes a relatively large proportion. There is also the possibility that the proportion of uplink transmission duration does not exceed the specified maximum uplink proportion, but the power density may exceed the power density threshold due to too much transmission power. There is also the possibility that the transmission power and the proportion of uplink transmission time exceed the upper limit at the same time, which is not limited in this solution.

When it is determined that the power density of the terminal device exceeds the power threshold value, and when it is detected that the terminal device is close to the target and the transmission beam is directed towards the target, the power density can be reduced to the specified power density threshold value at least according to the following methods provided by this application :

Way 1: reduce the transmit power of the transmit beam to be less than the transmit power threshold.

Method 2: Select a beam that is not facing the target as the transmitting beam.

Mode 3: After reducing the transmit power of the transmit beam, switch the beam not facing the target as the transmit beam.

Taking the target as a human body as an example, through several embodiments, the specific implementation of the terminal device determining that the power density exceeds the power density threshold and reducing the power density below the specified power density threshold is introduced.

Fig. 3 is an implementation flow chart of determining whether the power density exceeds the power density threshold value provided by this application. As shown in Fig. 3, assuming that the terminal device currently selects the first beam for transmission, that is, the first beam currently used, The specific implementation steps for the terminal device to determine whether the power density exceeds the power density threshold include:

S101: Detect the transmission power of the first beam.

In this solution, the higher the transmit power of the terminal equipment, the higher the proportion of uplink transmission time, the higher the power density value. Therefore, to detect whether the power density of the terminal equipment exceeds the standard, it is necessary to detect the current transmit power of the first beam , and the proportion of uplink transmission time.

In this step, the terminal device needs to detect the first beam currently in use, and obtain the current transmit power of the first beam, so as to compare it with the specified transmit power threshold and determine whether the transmit power exceeds the transmit power threshold value.

S102: If the transmit power of the first beam exceeds the transmit power threshold, detect and obtain the uplink transmit duration ratio within the window duration.

In this step, if the transmit power of the first beam does not exceed the transmit power threshold, in this solution, it can be considered that the power density of the terminal device does not exceed the power density threshold, and no subsequent processing is performed. If the transmission power of the first beam exceeds the transmission power threshold, it is necessary to continue to detect the proportion of uplink transmission time. The proportion of uplink transmission time refers to the proportion of time for uplink transmission, which is related to time. , it is impossible to detect the entire duration, so a period of time can be selected for detection, for example, the window duration for detecting the proportion of the uplink transmission duration can be specified in the protocol in advance, or the window duration can be directly stored in the terminal device, and when the uplink transmission is required When detecting the duration ratio, the window duration is read out, and the uplink transmission duration ratio of the first beam is obtained through detection within the window duration.

S103: If the uplink transmission duration ratio exceeds the uplink transmission duration ratio threshold value, determine that the power density in the direction of the first beam exceeds the power density threshold value.

In this step, the detected uplink transmission duration ratio is compared with the pre-acquired uplink transmission duration ratio threshold value. If the uplink transmission duration ratio does not exceed the uplink transmission duration ratio threshold value, it can be considered that the power If the density does not exceed the power density threshold, no processing is required. If the uplink transmission duration ratio exceeds the uplink transmission duration ratio threshold value, it is determined that the power density in the first beam direction exceeds the power density threshold value.

In a specific implementation of this solution, this solution does not limit whether to detect the transmission power first or to detect the proportion of the uplink transmission duration first, and the terminal device can also detect and obtain the proportion of the uplink transmission duration within the window duration. ratio; if the uplink transmission duration ratio exceeds the uplink transmission duration ratio threshold value, then detect the transmission power of the first beam; if the transmission power of the first beam exceeds the transmission power threshold value, then It is determined that the power density in the direction of the first beam exceeds the power density threshold.

In the above solution, the transmit beam of the terminal device is an uplink beam. The process of determining whether the power density of the terminal device in the direction of the transmit beam exceeds the power density threshold involves two parameters, that is, the transmit power gate The limit value and the threshold value of the proportion of uplink transmission time. These two parameters need to be tested during the production process of the terminal equipment or before leaving the factory, and these two parameters can be written in the protocol of the terminal equipment or stored in the terminal equipment in advance. The test methods for the transmit power threshold value and the uplink transmit duration ratio threshold value are introduced below.

(1), transmit power threshold

The transmit power threshold of any beam is the maximum transmit power at which the power density does not exceed the power density threshold when the beam is directed to the target and all uplink time slots are used for transmission. During the uplink transmission process, the terminal equipment needs to select a suitable beam. In this scheme, in order to obtain the transmission power threshold value, it is necessary to use Transmit in all uplink time slots (meaning that all time slots are uplink transmission, no downlink transmission), change different transmission power to transmit, and calculate the power density in the beam direction, the power density will not exceed the power density threshold The maximum transmit power of the beam is used as the transmit power threshold corresponding to the beam, which can be represented by XdBm.

(2), Uplink transmission time ratio threshold value

The uplink transmission duration ratio threshold value of any beam is the maximum uplink transmission duration ratio value at which the power density does not exceed the power density threshold value when the beam faces the target and transmits at the maximum transmission power. Similar to the above scheme, when the terminal device selects a transmission beam, when any beam is facing the human body and transmits at the maximum transmission power, adjust the different uplink transmission duration ratios, and calculate the uplink transmission duration ratio corresponding to the beam direction. power density, and then use the maximum uplink transmission ratio with the power density not exceeding the power density threshold as the uplink transmission duration ratio threshold, which can be represented by maxULDutyCycle. In this solution, it should be understood that the uplink transmission duration ratio threshold may have different values for different frequency bands.

Both the transmit power threshold value and the uplink transmit duration ratio threshold value corresponding to each beam of the terminal device can be obtained according to the above scheme.

In an implementation, when the terminal device initially accesses the network, it can report the transmit power threshold value and/or the uplink transmission duration ratio threshold value corresponding to each beam to the network device, and the network device can refer to the uplink transmission duration The proportion threshold is the scheduling resource of the terminal equipment, so as to avoid the problem that the power density is too high due to the high proportion of the uplink transmission time.

Based on the above solution, the following also uses the human body as an example to introduce several specific implementation methods for adjusting the power density.

FIG. 4 is a flow chart of Embodiment 1 of the method for adjusting power density provided by the present application. As shown in FIG. 4 , the method for adjusting power density provided in this embodiment specifically includes the following steps:

S201: If the power density in the direction of the first beam of the terminal device exceeds the power density threshold, detect whether the terminal device is close to the human body, where the first beam is a transmit beam of the terminal device.

In this step, the terminal device has determined that the power density in the first beam direction currently used exceeds the specified power density threshold according to any of the aforementioned methods. If the terminal device is far away from the human body, even a certain The power density in one direction is higher, and it will not affect human tissue, so it is necessary to determine whether the terminal device is close to the human body. Specifically, the distance between the terminal device and the human body can be detected to determine whether the distance is less than a certain preset distance. The preset distance can be obtained according to experiments, and recorded and stored for use when needed, without limitation. In addition, the distance between the terminal device and the human body can be monitored in real time to determine whether the terminal device is gradually approaching the human body. If the terminal device gradually approaches the human body over time, it is determined that the terminal device is approaching the human body.

In a specific implementation manner of this step, the terminal device can detect its relative positional relationship with the human body according to the built-in sensor, and determine whether the terminal device is close to the human body according to the relative positional relationship.

Further, the terminal device may also determine whether the direction of the first beam (that is, the currently used transmission beam) is facing the human body according to the relative positional relationship and the direction of the first beam. Since the direction of the beam is known to the terminal device, the terminal device can determine whether the transmitting beam is directed toward the human body as long as it knows the relative position of the human body.

In this solution, the built-in sensor of the terminal device includes at least one of a distance sensor, a touch sensor, a gyroscope, etc., which can detect the relative positional relationship between the terminal device and the human body, so as to determine whether the terminal device is working close to the human body , the "closer" in this solution includes at least the following situations: the distance between the terminal device and the human body is less than a certain preset distance, or the distance between the terminal device and the human body gradually decreases within a period of time. Other types of goals can also be implemented in the same way.

S202: If the terminal device is close to the human body, and the direction of the first beam is toward the human body, reduce the transmit power of the first beam to be less than a transmit power threshold.

In this step, it is determined that the terminal device is close to the human body according to the above method, and at the same time, the direction of the first beam is facing the human body. At this time, it is easy to cause damage to human tissue. The solution provided by this program is to direct the terminal device toward the human body. The power density is adjusted to be less than the power density threshold.

Specifically, this solution proposes a solution to reduce the power density, that is, the terminal device can reduce the transmit power of the first beam to less than the transmit power threshold value, so as to ensure that the power density towards the human body is less than the power density threshold value .

In the specific implementation of this solution, the ways for the terminal equipment to reduce the transmission power include at least the following two methods:

In the first manner, the terminal device gradually reduces the transmit power of the first beam until it is below the transmit power threshold. In an implementation, the power density may be calculated during the process to determine that the power density also falls below a threshold.

In a second manner, the terminal device obtains the maximum power backoff value corresponding to the first beam, and directly reduces the transmit power of the first beam by the maximum power backoff value. That is, when the terminal device determines that the transmission power needs to be reduced below the transmission power threshold value, it can directly subtract the maximum power backoff value from the current transmission power to obtain the reduced transmission power, and then use the reduced transmission power for transmission.

In this scheme, the meaning of the maximum power fallback value (which can be represented by MPRRFexposure) is that when the actual uplink transmission duration ratio of the terminal device scheduled by the network exceeds the uplink transmission duration ratio threshold reported by the terminal device to the network device, the terminal device The applicable maximum power backoff value is the maximum power value that can be reduced by the terminal device. The terminal device can calculate the maximum power backoff value according to the transmit power threshold value and the maximum power value that can be transmitted. It should be understood that the maximum power backoff value has corresponding values for different frequency bands, which can be obtained through experiments and stored in the terminal device. When the terminal device initially accesses the network, it needs to report to the network device, that is, the maximum The power backoff value is sent to the network device. The purpose is that the network device can judge whether to allow the terminal device to perform power back-off based on the maximum power back-off value reported by the terminal device.

It should be understood that this processing method requires the terminal device to report to the network the maximum power backoff value MPRRFexposure it needs under each beam (English: Beam) when initially accessing the network, so that the network device can subsequently determine whether the transmission power can be reduced by the maximum Power backoff value MPRRFexposure.

In the power density adjustment method provided in this embodiment, the terminal device detects the state of the terminal device after determining that the power density exceeds the power density threshold value. If the terminal device is close to the human body and the direction of the first beam is facing the human body, the terminal device can pass The way to reduce the transmission power of the first beam is to adjust the power density below the power density threshold to avoid damage to human tissues caused by electromagnetic waves, and to achieve the use of narrow-band beams to improve uplink coverage while ensuring that the power density does not exceed the standard.

Figure 5a is a flow chart of Embodiment 2 of the power density adjustment method provided by the present application. As shown in Figure 5, the power density adjustment method provided by this implementation specifically includes the following steps:

S301: If the power density in the direction of the first beam currently used by the terminal device exceeds the power density threshold, detect whether the terminal device is close to the human body.

This step is similar to step S201 in the embodiment shown in FIG. 4 , and its implementation may refer to the explanation of step S201 , which will not be repeated here.

S302: If the terminal device is close to the human body, and the direction of the first beam is toward the human body, adjust the transmitting beam of the terminal device to a second beam, and the direction of the second beam is not toward the human body.

In this step, similar to the first embodiment above, it is determined that the terminal device is close to the human body, and at the same time the direction of the first beam is facing the human body. At this time, it is easy to cause damage to human tissue. The power density of the device towards the human body is adjusted to be less than the power density threshold.

Specifically, this solution proposes a solution to reduce the power density, that is, the terminal device can switch the transmitting beam to other beams that are not facing the human body to avoid electromagnetic waves from causing harm to the human body. Therefore, the terminal device needs The second beam is selected from other beams not facing the human body, and can be switched to the second beam for transmission later, thereby reducing the power density toward the user. The way for the terminal device to select the second beam at least includes:

In the first manner, the second beam is a beam determined according to the quality of the received signal corresponding to the beam except for the direction towards the human body. That is, the terminal device can select the second beam according to the received signal quality of each beam except the direction towards the human body. It can select the beam with the best received signal quality, or the beam with the second best received quality, or other beams. This program is not limited.

In a specific implementation of this solution, the terminal device may transmit in turn using multiple beams except those directed toward the human body, and receive the received signal quality corresponding to each of the multiple beams returned by the network device. Then, according to the received signal quality corresponding to each beam, the beam with the best received signal quality is selected as the second beam from the plurality of beams except for the direction towards the human body.

As shown in Figure 1b, it can be seen that among all the optional beams of the terminal device, there may be multiple beams that are directed towards the human body, so firstly, it is necessary to base the direction of each beam and the relative positional relationship between the terminal device and the human body , to determine which beams are not directed towards the human body. Then use these multiple beams that are not facing the human body to transmit in turn, that is, interact with the network equipment. The network equipment receives the signal sent by each beam of the terminal equipment, and can detect the received signal quality when each beam is transmitted. The network device may directly select the second beam with the best received signal quality from the beams according to the received signal quality corresponding to each beam, and feed it back to the terminal device. Generally, the second beam is selected by the terminal device itself, so the network device may also send the received signal quality corresponding to each beam to the terminal device. That is, the terminal device receives the received signal quality of each beam not directed towards the human body fed back by the network device, and then selects the beam with the best received signal quality as the second beam.

In the second way, the second beam is randomly selected from a plurality of beams except for the direction toward the target. That is, the terminal device may randomly select a beam as the second beam from the multiple beams except for the direction toward the human body.

In this solution, similarly, the terminal device determines which beams are not directed toward the human body according to the direction of each beam and the relative positional relationship between the terminal device and the human body. Then one of the multiple beams not facing the human body is randomly selected as the second beam.

In this step, the terminal device switches the transmission beam to the second beam selected according to the above scheme. Figure 5b is a schematic diagram of transmission beam switching provided by this application. As shown in Figure 5b, the transmission beam before switching in this scheme is towards the human body Yes, the switched transmitting beam does not face the human body, which reduces the power density toward the human body and prevents electromagnetic waves from harming human tissues.

In a specific implementation of this solution, since the terminal device has confirmed that the power density exceeds the power density threshold value, the terminal device is close to the human body and the beam direction is facing the human body, in order to further reduce the damage of electromagnetic waves to the human body, you can switch Before the beam, reduce the transmit power a little. That is, before selecting the second beam, the transmit power of the first beam is reduced to be less than the transmit power threshold. The manner of reducing the transmit power is similar to that in the embodiment shown in FIG. 2 .

Before selecting the second beam, reducing the transmission power of the first beam can further avoid damage to human tissue caused by electromagnetic waves during the process of selecting the second beam and switching beams.

In the power density adjustment method provided in this embodiment, the terminal device detects the state of the terminal device after determining that the power density exceeds the power density threshold value. If the terminal device is close to the human body and the direction of the first beam is facing the human body, the terminal device can pass Switch to the beam that does not face the human body for transmission, adjust the power density below the power density threshold, and further reduce the power before switching the beam to minimize the time for electromagnetic waves to radiate the human body and further avoid electromagnetic waves that cause damage to human tissues. damage, and ensure that the power density does not exceed the standard.

In the specific implementation of the above-mentioned embodiments shown in Fig. 4 and Fig. 5a, both involve the scheme that the terminal equipment reduces the power of the transmission beam. In a specific implementation of this scheme, whether the transmission power can directly reduce the maximum power back The rebate value can be determined through negotiation between the terminal device and the network device. Figure 6 is a flow chart of Embodiment 3 of the power density adjustment method provided by this application. As shown in Figure 6, this embodiment provides a communication between the terminal device and the network device A negotiated solution for reducing power or switching beams specifically includes the following steps:

S401: If the power density of the terminal device exceeds the power density threshold, determine whether to allow the terminal device to reduce the transmit power by the maximum power backoff value according to the transmit power of the transmit beam of the terminal device and a pre-acquired maximum power backoff value.

In this step, the network device first needs to determine that the power density of the terminal device exceeds the power density threshold, specifically in the following two ways:

In the first way, the terminal device reports.

Specifically, when the terminal device detects that the power density in the direction of the transmission beam exceeds the threshold value, it sends the first indication information to the network device, and the first indication information is used to indicate the transmission beam of the terminal device (that is, the aforementioned terminal device side embodiment The power density of the first beam in ) exceeds the power density threshold. For the network device, the first indication information sent by the terminal device is received, and according to the first indication information, it is determined that the power density of the terminal device exceeds the threshold value of the power density.

In the second way, the detection calculation is performed by the network device.

Specifically, the network device calculates and acquires the power density of the terminal device according to the transmit power of the first beam used by the terminal device and the uplink transmission duration ratio configured for the terminal device. Then compare the calculated power density with the power density threshold value to determine whether the power density exceeds the power density threshold value.

In the specific implementation of this solution, during the initial network access process, the terminal device needs to send the maximum power backoff value to the network device. The network device judges that the terminal device is allowed to directly reduce the transmission power by the maximum power fallback value, depending on whether the reduced transmission power is lower than the required minimum transmission power. Because the transmission power is too low, it is easy to cause the problem of not receiving or even dropping the line , so it cannot be reduced arbitrarily. Therefore, in the specific implementation of this step: if the network device determines that the difference between the transmit power of the first beam and the maximum power backoff value is smaller than the pre-acquired minimum power value, it is not allowed The terminal device reduces the transmission power by the maximum power backoff value; otherwise, the terminal device is allowed to reduce the transmission power by the maximum power backoff value, and the specific transmission power reduction method is similar to the embodiment shown in Figure 2. This will not be repeated here.

S402: If the terminal device is not allowed to reduce the transmission power by the maximum power backoff value, send second instruction information to the terminal device, where the second instruction information is used to instruct the terminal device to perform beam switching.

In this step, if the network device determines that the terminal device is not allowed to reduce the transmission power by the maximum power backoff value, then in order to solve the problem that the power density of the terminal device is reduced towards the human body, the beam can also be switched, so the network device can instruct the terminal device to perform beam switching. Switching means sending the second indication information to the terminal equipment. For the terminal equipment, it receives the second indication information sent by the network equipment, and subsequently switches the transmission beam from the current first beam to second beam.

In the implementation of this solution, if the second beam is selected by the network device for the terminal device according to the received signal quality of each beam or other parameters, the second indication information may also include the second beam selected by the network device, or the second beam selected by the network device The identification information of the two beams is not limited in this solution.

In the power density adjustment method provided in this embodiment, after the terminal device determines that the power density exceeds the power density threshold, it detects the state of the terminal device. If the terminal device is close to the human body and the direction of the first beam is facing the human body, whether the terminal device can The transmission power reduces the maximum power backoff value, which needs to be determined through negotiation with the network equipment. If the maximum power backoff value cannot be reduced, the problem of excessive power density can be solved by switching beams, so as to avoid the network equipment being damaged due to too much transmission power reduction. Can not receive the signal, the problem of terminal equipment disconnection, at the same time, the power density can be adjusted below the power density threshold value, to avoid electromagnetic waves from causing damage to human tissues, and to ensure that the power density does not exceed the standard.

FIG. 7 is a schematic structural diagram of Embodiment 1 of a terminal device provided by the present application. As shown in FIG. 7 , the terminal device 100 includes:

A detection module 111, configured to detect whether the terminal device is close to a target if the power density in the direction of the first beam of the terminal device exceeds a power density threshold, wherein the first beam is the terminal device the launch beam;

The processing module 112 is configured to adjust the power density of the terminal device towards the target to be less than the power density threshold if the terminal device is close to the target and the direction of the first beam is towards the target.

The terminal device provided in this embodiment is used to implement the technical solution on the terminal device side in any of the foregoing method embodiments. Avoid the problem of excessive power density of millimeter wave terminal equipment.

On the basis of the embodiment shown in FIG. 7 above, the processing module 112 is further configured to:

According to the transmission power of the first beam, and/or, the uplink transmission duration ratio of the first beam within a preset window duration, determine whether the power density in the direction of the first beam exceeds the specified The above power density threshold.

Further, the processing module 112 is specifically used for:

detecting transmit power of the first beam;

If the transmission power of the first beam exceeds the transmission power threshold value, detecting and obtaining the uplink transmission duration ratio within the window duration;

If the uplink transmission duration ratio exceeds the uplink transmission duration ratio threshold value, determine that the power density in the direction of the first beam exceeds the power density threshold value;

or,

Detecting and obtaining the proportion of the uplink transmission duration within the window duration;

If the uplink transmission duration ratio exceeds the uplink transmission duration ratio threshold value, detecting the transmission power of the first beam;

If the transmit power of the first beam exceeds the transmit power threshold, determine that the power density in the direction of the first beam exceeds the power density threshold.

On the basis of any of the foregoing embodiments, in a specific implementation manner, the processing module 112 is specifically configured to:

reducing the transmit power of the first beam to be less than the transmit power threshold.

In an implementation manner, the processing module 112 is specifically configured to:

adjusting the transmitting beam of the terminal device to the second beam, and the direction of the second beam is not toward the target.

The terminal device provided by any of the foregoing implementation manners is used to execute the technical solution on the terminal device side in any of the foregoing method embodiments, and its implementation principles and technical effects are similar, and details are not repeated here. ,

In an implementation manner, the second beam is a beam determined according to the received signal quality corresponding to the beams except the direction towards the target.

FIG. 8 is a schematic structural diagram of Embodiment 2 of the terminal device provided in this application. As shown in FIG. 8, the terminal device 100 further includes:

A transmitting module 113, configured to transmit in turn using a plurality of beams other than the direction toward the target;

The receiving module 114 is configured to receive the received signal quality corresponding to each of the plurality of beams returned by the network device;

The processing module 112 is further configured to, according to the received signal quality corresponding to each beam, select the beam with the best received signal quality as the second beam from the plurality of beams except for the direction toward the target.

On the basis of any of the above embodiments, the second beam is randomly selected from a plurality of beams except for the direction toward the target.

In an implementation manner, the processing module 112 is specifically configured to:

A beam is randomly selected as the second beam from a plurality of beams except the direction toward the target.

In an implementation manner, the processing module 112 is further configured to reduce the transmit power of the first beam to be less than the transmit power threshold before selecting the second beam.

In an implementation manner, the processing module 112 is specifically configured to:

Acquiring a maximum power backoff value corresponding to the first beam;

Decreasing the transmit power of the first beam by the maximum power backoff value.

The terminal device provided by any of the foregoing implementation manners is used to execute the technical solution on the terminal device side in any of the foregoing method embodiments, and its implementation principles and technical effects are similar, and details are not repeated here.

FIG. 9 is a schematic structural diagram of Embodiment 3 of a terminal device provided in this application. As shown in FIG. 9, the terminal device 100 further includes:

The sending module 115 is configured to send the maximum power backoff value to the network device during initial access to the network.

In an implementation manner, before the processing module 112 adjusts the transmit beam of the terminal device to the second beam, the sending module 115 is further configured to send first indication information to the network device, the second The indication information is used to indicate that the power density of the first beam exceeds the power density threshold;

In an implementation manner, the terminal device further includes: a receiving module 114, configured to receive second indication information sent by the network device; the second indication information is used to instruct the terminal device to perform beam switching.

In an implementation manner, the sending module 115 is configured to report the uplink transmission duration ratio threshold value of each beam within the window duration to the network device.

In an implementation manner, based on any of the above-mentioned embodiments, the transmit power threshold value of any beam is such that when the beam is directed towards the target, the power density does not exceed the power density threshold value when all uplink time slots are used for transmission. the maximum transmit power.

In an implementation manner, the processing module 112 is also used for:

When any beam is facing the target, all uplink time slots are used for transmission, and the maximum transmission power whose power density does not exceed the power density threshold is used as the transmission power threshold corresponding to the beam.

In an implementation manner, the uplink transmission duration ratio threshold value of any beam is the maximum uplink transmission duration ratio value at which the power density does not exceed the power density threshold value when the beam is directed towards the target and transmits at the maximum transmission power .

In an implementation manner, the processing module 112 is also used for:

When any beam is directed towards the target and transmits with the maximum transmission power, the maximum uplink transmission proportion whose power density does not exceed the power density threshold is used as the uplink transmission duration proportion threshold.

FIG. 10 is a schematic structural diagram of Embodiment 4 of a terminal device provided in this application. As shown in FIG. 10 , the terminal device 100 further includes:

The storage module 116 is configured to store the transmit power threshold value and the uplink transmit duration ratio threshold value corresponding to each beam.

On the basis of any of the foregoing embodiments, the detection module 111 is specifically configured to:

Detecting the relative positional relationship between the terminal device and the target according to the built-in sensor of the terminal device, and determining whether the terminal device is close to the target according to the relative positional relationship.

Further, the processing module 112 is further configured to determine whether the direction of the first beam is toward the target according to the relative positional relationship and the direction of the first beam.

In an implementation, the target includes a human body.

The terminal device provided by any of the foregoing implementation manners is used to execute the technical solution on the terminal device side in any of the foregoing method embodiments, and its implementation principles and technical effects are similar, and details are not repeated here.

FIG. 11 is a schematic structural diagram of Embodiment 1 of a network device provided in this application. As shown in FIG. 11 , the network device 200 includes:

The processing module 211 is configured to, if the power density of the terminal device exceeds the power density threshold, determine whether the terminal device is allowed to transmit power reduction by the maximum power backoff value;

A sending module 212, configured to send second indication information to the terminal device if the terminal device is not allowed to reduce the transmission power by the maximum power backoff value;

Wherein, the second indication information is used to instruct the terminal device to perform beam switching.

In an implementation manner, the processing module 211 is specifically configured to:

If the difference between the transmit power of the transmit beam and the maximum power backoff value is smaller than a pre-acquired minimum power value, the terminal device is not allowed to reduce the transmit power by the maximum power backoff value;

Otherwise, the terminal device is allowed to reduce the transmit power by the maximum power backoff value.

In an implementation manner, the network device 200 further includes:

A receiving module 213, configured to receive first indication information sent by the terminal device, where the first indication information is used to indicate that the power density of the transmit beam of the terminal device exceeds the power density threshold;

or,

The processing module 211 is specifically used for:

Acquiring the power density of the terminal device according to the transmission power of the first beam and the uplink transmission duration ratio configured for the terminal device;

Determine whether the power density exceeds the power density threshold.

The network device provided in this embodiment is used to implement the technical solution on the network device side in any of the foregoing method embodiments, and its implementation principles and technical effects are similar, and details are not repeated here.

FIG. 12 is a schematic structural diagram of Embodiment 5 of the terminal device provided by this application. As shown in FIG. 12 , the terminal device 300 includes:

A processor 311, a memory 312, and an interface 313 for communicating with network devices;

The memory 312 stores computer-executable instructions;

The processor 311 executes the computer-executed instructions stored in the memory, so that the processor 311 executes the technical solution on the terminal device side in any of the foregoing method embodiments.

FIG. 12 is a simple design of a terminal device. The embodiment of the present application does not limit the number of processors and memories in the terminal device. FIG. 12 only uses 1 as an example for illustration.

FIG. 13 is a schematic structural diagram of Embodiment 2 of the network device provided by the present application. As shown in FIG. 13 , the network device 400 includes:

A processor 411, a memory 412, and an interface 413 for communicating with the terminal device;

The memory 412 stores computer-executable instructions;

The processor 411 executes the computer-executed instructions stored in the memory 412, so that the processor 411 executes the technical solution on the network device side in any of the foregoing method embodiments.

FIG. 13 is a simple design of a network device. The embodiment of the present application does not limit the number of processors and memories in the network device. FIG. 13 only uses 1 as an example for illustration.

In a specific implementation of the terminal device shown in FIG. 12 and the network device shown in FIG. 13, the memory, the processor, and the interface can be connected through a bus. In one implementation, the memory can be integrated inside the processor .

The embodiment of the present application also provides a computer-readable storage medium. The computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the terminal device in any of the foregoing method embodiments. technical solutions.

The embodiment of the present application also provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, they are used to implement the network in any of the preceding method embodiments. Equipment technical solutions.

The embodiment of the present application further provides a program, which is used to implement the technical solution of the terminal device in any of the foregoing method embodiments when the program is executed by a processor.

The embodiment of the present application further provides a program, which is used to execute the technical solution of the network device in any one of the foregoing method embodiments when the program is executed by a processor.

In an implementation manner, the foregoing processor may be a chip.

An embodiment of the present application further provides a computer program product, including program instructions, and the program instructions are used to implement the technical solution of the terminal device in any one of the foregoing method embodiments.

An embodiment of the present application further provides a computer program product, including program instructions, and the program instructions are used to realize the technical solution of the network device in any one of the foregoing method embodiments.

An embodiment of the present application further provides a chip, including: a processing module and a communication interface, where the processing module can execute the technical solution on the terminal device side in any one of the foregoing method embodiments.

Further, the chip also includes a storage module (such as a memory), the storage module is used to store instructions, and the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module makes the processing module perform any of the foregoing. The technical solution on the terminal device side in the method embodiment.

An embodiment of the present application further provides a chip, including: a processing module and a communication interface, where the processing module can execute the technical solution on the network device side in any one of the foregoing method embodiments.

Further, the chip also includes a storage module (such as a memory), the storage module is used to store instructions, and the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module makes the processing module perform any of the foregoing. The technical solution on the network device side in the method embodiment.

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

In the specific implementation of the above-mentioned terminal equipment and network equipment, it should be understood that the processor can be a central processing unit (English: Central Processing Unit, referred to as: CPU), and can also be other general-purpose processors, digital signal processors (English: Digital Signal Processor, referred to as: DSP), application specific integrated circuit (English: Application Specific Integrated Circuit, referred to as: ASIC), etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the methods disclosed in this application can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.

All or part of the steps for implementing the above method embodiments can be completed by program instructions and related hardware. The aforementioned program can be stored in a readable memory. When the program is executed, it executes the steps comprising the above-mentioned method embodiments; and the aforementioned memory (storage medium) includes: read-only memory (English: read-only memory, abbreviated: ROM), RAM, flash memory, hard disk, Solid state drive, magnetic tape (English: magnetic tape), floppy disk (English: floppydisk), optical disc (English: optical disc) and any combination thereof.

Claims (38)

1. A method for adjusting power density, applied to a terminal device, the method comprising:

if the power density in the direction of the first beam of the terminal equipment exceeds a power density threshold value, detecting whether the terminal equipment is close to a target, wherein the first beam is a transmitting beam of the terminal equipment;

if the terminal equipment is close to the target and the direction of the first beam faces the target, adjusting the power density of the terminal equipment facing the target to be smaller than the power density threshold value;

the adjusting the power density of the terminal equipment towards the target to be smaller than a power density threshold value comprises the following steps:

adjusting the transmitting beam of the terminal equipment into a second beam, wherein the direction of the second beam is not towards the target;

wherein the adjusting the transmitting beam of the terminal device to a second beam includes:

adopting a plurality of beams except for the direction facing the human body to transmit in turn, receiving the received signal quality corresponding to each beam in the plurality of beams returned by the network equipment, and selecting the beam with the best received signal quality from the plurality of beams except for the direction facing the human body as the second beam according to the received signal quality corresponding to each beam;

Wherein before the adjusting the transmitting beam of the terminal device to the second beam, the method further includes:

and reducing the transmitting power of the first wave beam to be smaller than a transmitting power threshold value.

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

and determining whether the power density in the direction of the first beam exceeds the power density threshold value according to the transmitting power of the first beam and/or the uplink transmitting duration duty ratio of the first beam in the preset window duration.

3. The method according to claim 2, wherein the determining whether the power density in the direction of the first beam exceeds the power density threshold according to the transmission power of the first beam and the uplink transmission duration duty cycle of the first beam within a preset window duration includes:

detecting the transmit power of the first beam;

if the transmitting power of the first wave beam exceeds a transmitting power threshold value, detecting and acquiring the uplink transmitting duration duty ratio in the window duration;

if the uplink transmission duration duty ratio exceeds an uplink transmission duration duty ratio threshold value, determining that the power density in the direction of the first beam exceeds the power density threshold value;

Or,

detecting and acquiring the duty ratio of the uplink transmission duration in the window duration;

if the uplink transmission duration duty ratio exceeds the uplink transmission duration duty ratio threshold value, detecting the transmission power of the first wave beam;

and if the transmission power of the first beam exceeds a transmission power threshold value, determining that the power density in the direction of the first beam exceeds the power density threshold value.

4. The method of claim 1, wherein said reducing the transmit power of the first beam to less than the transmit power threshold comprises:

acquiring a maximum power back-off value corresponding to the first wave beam;

the transmit power of the first beam is reduced by the maximum power back-off value.

5. The method according to claim 4, wherein the method further comprises:

and in the process of initially accessing the network, the maximum power back-off value is sent to network equipment.

6. The method of claim 5, wherein before adjusting the transmit beam of the terminal device to the second beam, the method further comprises:

and sending first indication information to the network equipment, wherein the first indication information is used for indicating that the power density of the first beam exceeds the power density threshold value.

7. The method of claim 5, wherein the method further comprises:

receiving second indication information sent by the network equipment; the second indication information is used for indicating the terminal equipment to perform beam switching.

8. The method according to any of claims 2 to 7, wherein before said adjusting the power density of the terminal device to be smaller than a power density threshold value, the method further comprises:

and reporting the uplink transmitting time length duty ratio threshold value of each wave beam in the window time length to network equipment.

9. The method according to any one of claim 2 to 7, wherein,

the transmitting power threshold value of any beam is the maximum transmitting power of which the power density does not exceed the power density threshold value when the beam is towards the target and the full uplink time slot is adopted for transmitting.

10. The method of claim 9, wherein the step of determining the position of the substrate comprises,

the uplink transmission duration duty ratio threshold of any beam is the maximum uplink transmission duration duty ratio of the power density not exceeding the power density threshold when the beam faces the target and is transmitted with the maximum transmission power.

11. The method according to claim 10, wherein the method further comprises:

And storing a transmitting power threshold value and an uplink transmitting duration duty ratio threshold value corresponding to each wave beam.

12. The method according to any of claims 1 to 7, wherein said detecting whether the terminal device is close to a target comprises:

and detecting the relative position relation between the terminal equipment and the target according to the built-in sensor, and determining whether the terminal equipment is close to the target according to the relative position relation.

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

and determining whether the direction of the first beam faces a target according to the relative position relation and the direction of the first beam.

14. The method of any one of claims 1 to 7, wherein the target comprises a human body.

15. A method for adjusting power density, applied to a network device, the method comprising:

if the power density of the terminal equipment exceeds a power density threshold value, determining whether to allow the terminal equipment to reduce the transmitting power by the maximum power back-off value according to the transmitting power of the transmitting beam of the terminal equipment and the maximum power back-off value acquired in advance;

If the terminal equipment is not allowed to reduce the transmitting power by the maximum power back-off value, second indication information is sent to the terminal equipment;

the second indication information is used for indicating the terminal equipment to perform beam switching;

before the terminal equipment performs beam switching, the terminal equipment reduces the transmitting power to be smaller than a transmitting power threshold value;

the beam switching of the terminal equipment comprises the following steps:

and adopting a plurality of beams except for the direction facing the human body to transmit in turn, receiving the received signal quality corresponding to each beam in the plurality of beams returned by the network equipment, and selecting the beam with the best received signal quality from the plurality of beams except for the direction facing the human body as the beam to be replaced according to the received signal quality corresponding to each beam.

16. The method of claim 15, wherein determining whether to allow the terminal device to reduce the transmit power by a maximum power back-off value based on the transmit power of the transmit beam of the terminal device and the maximum power back-off value obtained in advance comprises:

if the difference value between the transmitting power of the transmitting beam and the maximum power back-off value is smaller than the pre-acquired minimum power value, the terminal equipment is not allowed to reduce the transmitting power by the maximum power back-off value;

Otherwise, allowing the terminal equipment to reduce the transmitting power by the maximum power back-off value.

17. The method according to claim 15 or 16, characterized in that the method further comprises:

receiving first indication information sent by the terminal equipment, wherein the first indication information is used for indicating that the power density of the transmitting beam of the terminal equipment exceeds the power density threshold value;

or,

acquiring the power density of the terminal equipment according to the transmitting power of the transmitting wave beam and the uplink transmitting time length duty ratio configured for the terminal equipment;

determining whether the power density exceeds the power density threshold.

18. A terminal device, comprising:

the detection module is used for detecting whether the terminal equipment is close to a target or not if the power density in the direction of a first wave beam of the terminal equipment exceeds a power density threshold value, wherein the first wave beam is a transmitting wave beam of the terminal equipment;

the processing module is used for adjusting the power density of the terminal equipment facing the target to be smaller than the power density threshold value if the terminal equipment is close to the target and the direction of the first wave beam faces the target;

The processing module is specifically configured to:

adjusting the transmitting beam of the terminal equipment to a second beam; wherein the direction of the second beam is not toward the target;

the processing module is specifically configured to:

adopting a plurality of beams except for the direction facing the human body to transmit in turn, receiving the received signal quality corresponding to each beam in the plurality of beams returned by the network equipment, and selecting the beam with the best received signal quality from the plurality of beams except for the direction facing the human body as the second beam according to the received signal quality corresponding to each beam;

the processing module is further configured to reduce the transmit power of the first beam to be less than the transmit power threshold before adjusting the transmit beam of the terminal device to the second beam.

19. The terminal device of claim 18, wherein the processing module is further configured to:

and determining whether the power density in the direction of the first beam exceeds the power density threshold value according to the transmitting power of the first beam and/or the uplink transmitting duration duty ratio of the first beam in the preset window duration.

20. The terminal device according to claim 19, wherein the processing module is specifically configured to:

detecting the transmit power of the first beam;

if the transmitting power of the first wave beam exceeds the transmitting power threshold value, detecting and acquiring the uplink transmitting duration duty ratio in the window duration;

if the uplink transmission duration duty ratio exceeds an uplink transmission duration duty ratio threshold value, determining that the power density in the direction of the first beam exceeds the power density threshold value;

or,

detecting and acquiring the duty ratio of the uplink transmission duration in the window duration;

if the uplink transmission duration duty ratio exceeds the uplink transmission duration duty ratio threshold value, detecting the transmission power of the first wave beam;

and if the transmission power of the first beam exceeds a transmission power threshold value, determining that the power density in the direction of the first beam exceeds the power density threshold value.

21. The terminal device according to claim 18, wherein the processing module is specifically configured to:

acquiring a maximum power back-off value corresponding to the first wave beam;

the transmit power of the first beam is reduced by the maximum power back-off value.

22. The terminal device according to claim 21, characterized in that the terminal device further comprises:

and the sending module is used for sending the maximum power back-off value to network equipment in the initial network access process.

23. The terminal device of claim 22, wherein the transmitting module is further configured to transmit first indication information to the network device before the processing module adjusts the transmit beam of the terminal device to the second beam, the first indication information being configured to indicate that the power density of the first beam exceeds the power density threshold value.

24. The terminal device according to claim 22, characterized in that the terminal device further comprises:

the receiving module is used for receiving the second indication information sent by the network equipment; the second indication information is used for indicating the terminal equipment to perform beam switching.

25. The terminal device according to any of the claims 19 to 24, characterized in that the terminal device further comprises:

and the sending module is used for reporting the uplink transmitting time length of each beam within the window time length to the network equipment.

26. Terminal device according to any of the claims 19 to 24, characterized in that,

The transmitting power threshold value of any beam is the maximum transmitting power of which the power density does not exceed the power density threshold value when the beam is towards the target and the full uplink time slot is adopted for transmitting.

27. The terminal device of claim 26, wherein the terminal device,

the uplink transmission duration duty ratio threshold of any beam is the maximum uplink transmission duration duty ratio of the power density not exceeding the power density threshold when the beam faces the target and is transmitted with the maximum transmission power.

28. The terminal device according to claim 27, characterized in that the terminal device further comprises:

and the storage module is used for storing the transmission power threshold value and the uplink transmission duration duty ratio threshold value corresponding to each wave beam.

29. The terminal device according to any of the claims 18 to 24, wherein the detection module is specifically configured to:

detecting the relative position relation between the terminal equipment and the target according to a sensor built in the terminal equipment, and determining whether the terminal equipment is close to the target according to the relative position relation.

30. The terminal device of claim 29, wherein the processing module is further configured to:

And determining whether the direction of the first beam faces a target according to the relative position relation and the direction of the first beam.

31. A terminal device according to any of claims 18 to 24, wherein the object comprises a human body.

32. A network device, comprising:

the processing module is used for determining whether the terminal equipment is allowed to reduce the transmitting power by the maximum power back-off value according to the transmitting power of the transmitting beam of the terminal equipment and the maximum power back-off value acquired in advance if the power density of the terminal equipment exceeds a power density threshold value;

a sending module, configured to send second indication information to the terminal device if the terminal device is not allowed to reduce the transmission power by the maximum power back-off value;

the second indication information is used for indicating the terminal equipment to perform beam switching;

before the terminal equipment performs beam switching, the terminal equipment reduces the transmitting power to be smaller than a transmitting power threshold value;

the beam switching of the terminal equipment comprises the following steps:

and adopting a plurality of beams except for the direction facing the human body to transmit in turn, receiving the received signal quality corresponding to each beam in the plurality of beams returned by the network equipment, and selecting the beam with the best received signal quality from the plurality of beams except for the direction facing the human body as the beam to be replaced according to the received signal quality corresponding to each beam.

33. The network device of claim 32, wherein the processing module is specifically configured to:

if the difference value between the transmitting power of the transmitting beam and the maximum power back-off value is smaller than the pre-acquired minimum power value, the terminal equipment is not allowed to reduce the transmitting power by the maximum power back-off value;

otherwise, allowing the terminal equipment to reduce the transmitting power by the maximum power back-off value.

34. The network device of claim 32 or 33, wherein the network device further comprises:

the receiving module is used for receiving first indication information sent by the terminal equipment, wherein the first indication information is used for indicating that the power density of the transmitting beam of the terminal equipment exceeds the power density threshold value;

or,

the processing module is specifically configured to:

acquiring the power density of the terminal equipment according to the transmitting power of the first wave beam and the uplink transmitting duration duty ratio configured for the terminal equipment;

determining whether the power density exceeds the power density threshold.

35. A terminal device, comprising:

a processor, a memory, an interface to communicate with a network device;

The memory stores computer-executable instructions;

the processor executing the computer-executable instructions stored in the memory causes the processor to perform the power density adjustment method of any one of claims 1 to 14.

36. A network device, comprising:

the device comprises a processor, a memory and an interface for communicating with the terminal equipment;

the memory stores computer-executable instructions;

the processor executing the computer-executable instructions stored in the memory causes the processor to perform the power density adjustment method of any one of claims 15 to 17.

37. A computer-readable storage medium, in which computer-executable instructions are stored, which when executed by a processor are adapted to carry out the power density adjustment method according to any one of claims 1 to 14.

38. A computer-readable storage medium, in which computer-executable instructions are stored, which when executed by a processor are adapted to carry out the power density adjustment method according to any one of claims 15 to 17.

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