WO2020103056A1 - Procédé de réglage de densité de puissance, dispositif et support de stockage - Google Patents

Procédé de réglage de densité de puissance, dispositif et support de stockage

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Publication number
WO2020103056A1
WO2020103056A1 PCT/CN2018/116802 CN2018116802W WO2020103056A1 WO 2020103056 A1 WO2020103056 A1 WO 2020103056A1 CN 2018116802 W CN2018116802 W CN 2018116802W WO 2020103056 A1 WO2020103056 A1 WO 2020103056A1
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WO
WIPO (PCT)
Prior art keywords
terminal device
power
power density
threshold
transmit
Prior art date
Application number
PCT/CN2018/116802
Other languages
English (en)
Chinese (zh)
Inventor
唐海
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201880095939.7A priority Critical patent/CN112470530B/zh
Priority to PCT/CN2018/116802 priority patent/WO2020103056A1/fr
Publication of WO2020103056A1 publication Critical patent/WO2020103056A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • Embodiments of the present application relate to communication technologies, and in particular, to a power density adjustment method, device, and storage medium.
  • Terminal equipment that uses millimeter wave for data transmission can also be called a millimeter wave terminal.
  • a millimeter wave terminal In order to overcome large propagation losses, narrow transmit beams are generally used to concentrate energy in the direction facing the base station. 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 restrict the terminal from growing in a certain direction when approaching the human body Radiant energy of time.
  • Power density Power Density
  • the standard has strict index requirements for the power density value.
  • 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 the millimeter wave terminal device exceeds the standard.
  • an embodiment of the present application may provide a power density adjustment method, which is applied to a terminal device.
  • the method includes:
  • the power density in the direction of the first beam of the terminal device exceeds the power density threshold, it is detected whether the terminal device is close to the target, where the first beam is the transmit beam of the terminal device;
  • the terminal device If the terminal device is close to the target and the direction of the first beam is toward the target, adjust the power density of the terminal device toward the target to be less than the power density threshold.
  • an embodiment of the present application may also provide a power density adjustment method, which is applied to a network device, and the method includes:
  • 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 Rollback value
  • the second indication information is used to instruct the terminal device to perform beam switching.
  • embodiments of the present application may also provide a terminal device, including:
  • the detection module is configured to detect whether the terminal device is close to the target if the power density in the direction of the first beam of the terminal device exceeds the power density threshold, wherein the first beam is the Transmit beam
  • the processing module is configured to adjust the power density of the terminal device toward 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 toward the target.
  • an embodiment of the present application may further provide a network device, including:
  • the processing module is used to determine whether to allow the terminal device to transmit power according to the transmit power of the transmit beam of the terminal device and the pre-acquired maximum power backoff value if the power density of the terminal device exceeds the threshold value of the power density Reduce the maximum power back-off value;
  • a sending module configured to send second indication information to the terminal device if the terminal device is not allowed to reduce the transmit power by the maximum power backoff value
  • the second indication information is used to instruct the terminal device to perform beam switching.
  • an embodiment of the present application may further provide a terminal device, including:
  • the memory stores computer execution 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 aspect.
  • an embodiment of the present application may further provide a network device, including:
  • the memory stores computer execution instructions
  • the processor executes computer-executed instructions stored in the memory, so that the processor executes the power density adjustment method provided in any one of the second aspects.
  • an embodiment of the present application provides a computer-readable storage medium.
  • the computer-readable storage medium stores computer-executable instructions. When the computer-executed instructions are executed by a processor, it is used to implement any of the first aspects Item power density adjustment method.
  • an embodiment of the present application provides a computer-readable storage medium that stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, is used to implement any of the second aspects.
  • a method for adjusting the power density is used to implement any of the second aspects.
  • an embodiment of the present application provides a program that, when executed by a processor, is used to execute the power density adjustment method described in any one of the first aspects above.
  • an embodiment of the present application further provides a program that, when executed by a processor, is used to execute the power density adjustment method described in any one of the second aspects above.
  • the above processor may be a chip.
  • an embodiment of the present application provides a computer program product, including program instructions, which are used to implement the power density adjustment method described in any one of the first aspects.
  • an embodiment of the present application provides a computer program product, including program instructions, which are used to implement the power density adjustment method described in any one of the second aspects.
  • an embodiment of the present application provides a chip, including: a processing module and a communication interface, the processing module can execute the power density adjustment method according to any one of the first aspect.
  • the chip further includes a storage module (eg, a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored by the storage module, and execution of the instructions stored in the storage module causes the processing module to perform the first aspect
  • a storage module eg, a memory
  • the storage module is used to store instructions
  • the processing module is used to execute the instructions stored by the storage module
  • execution of the instructions stored in the storage module causes the processing module to perform the first aspect
  • the method for adjusting the power density according to any one of the above.
  • an embodiment of the present application provides a chip, including: a processing module and a communication interface, the processing module can execute the power density adjustment method according to any one of the second aspect.
  • the chip further includes a storage module (eg, a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored by the storage module, and execution of the instructions stored in the storage module causes the processing module to perform the second aspect
  • a storage module eg, a memory
  • the storage module is used to store instructions
  • the processing module is used to execute the instructions stored by the storage module
  • execution of the instructions stored in the storage module causes the processing module to perform the second aspect
  • the method for adjusting the power density according to any one of the above.
  • the power density adjustment method, device, and storage medium provided in the embodiments of the present application.
  • the The first beam is the transmitting beam of the terminal device, then it is detected 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 toward the target, the power density of the terminal device toward the target is adjusted to be less than the power Density threshold value. In this way, the power density of the terminal device toward the human body is adjusted to not exceed the specified threshold value, which effectively avoids the problem that the power density of the millimeter wave terminal device exceeds the standard.
  • 1a is a schematic diagram of a beam of a millimeter wave terminal device provided by this application.
  • 1b is a schematic diagram of the relationship between the beam of the millimeter wave terminal device and the human body provided by this application;
  • FIG. 2 is a schematic diagram of a communication system applied in an embodiment of the present application.
  • FIG. 3 is a flowchart of a specific implementation of determining whether the power density exceeds the power density threshold provided by this application;
  • Embodiment 4 is a flowchart of Embodiment 1 of a power density adjustment method provided by this application;
  • Embodiment 2 is a flowchart of Embodiment 2 of a power density adjustment method provided by this application;
  • 5b is a schematic diagram of transmit beam switching provided by this application.
  • Embodiment 6 is a flowchart of Embodiment 3 of a power density adjustment method provided by this application;
  • Embodiment 7 is a schematic structural diagram of Embodiment 1 of a terminal device provided by this application.
  • Embodiment 8 is a schematic structural diagram of Embodiment 2 of a terminal device provided by this application.
  • Embodiment 9 is a schematic structural diagram of Embodiment 3 of a terminal device provided by this application.
  • Embodiment 4 of a terminal device provided by this application.
  • Embodiment 1 is a schematic structural diagram of Embodiment 1 of a network device provided by this application.
  • Embodiment 5 of a terminal device provided by this application.
  • Embodiment 13 is a schematic structural diagram of Embodiment 2 of a network device provided by this application.
  • Power density (full name in English: Power density) is an index parameter for measuring the electromagnetic radiation intensity of the millimeter wave terminal to the human body.
  • the unit of power density is: w / m 2 .
  • the test of power density is generally based on the average power of the terminal device in a certain direction in a certain direction for a period of time. The higher the terminal device's transmit power, the narrower the beam, and the higher the percentage of uplink transmission time, the higher the power density value. The higher.
  • a narrow transmit beam is generally used to concentrate the energy in the direction of the network device. The beam is relatively narrow, and the energy of electromagnetic radiation is also concentrated. If the transmit beam faces 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 by the application
  • FIG. 1b is a schematic diagram of a relationship between a beam of a millimeter wave terminal device provided by the application and a human body.
  • the figure shows the terminal device and the surrounding beams and the direction of the beam.
  • the number of beams is not limited in this solution, only this figure is used as an illustration, combined with Figure 1b, it can be seen that the user is using the terminal device
  • this solution proposes a power density adjustment method to adjust the power density of the terminal equipment toward the human body not to exceed the specified threshold value, to avoid electromagnetic radiation on human tissues when using the terminal equipment cause some damages.
  • the scheme can also be applied to adjust the power density when millimeter waves affect 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 is not limited.
  • FIG. 2 is a schematic diagram of a communication system applied in an embodiment of the present application.
  • 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.
  • the network device 11 may be an access device in a cellular network, for example, may be 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 An example of the coverage area of a relay station, or a base station in a new network system in the future, is the area within the real coil. It can also be an access point (Access Point, AP for short) and other devices in the WLAN.
  • AP Access Point
  • the terminal device 12 may also be referred to as a mobile terminal, user equipment (User Equipment), access terminal, user unit, user station, mobile station, mobile station, user terminal, terminal, wireless communication device, user agent or User device.
  • a mobile terminal user equipment
  • User Equipment User Equipment
  • it can be a smartphone, cellular phone, cordless phone, personal digital assistant (PDA) device, handheld device with wireless communication function or other processing device connected to a wireless modem, in-vehicle device, wearable device, etc.
  • the terminal device has an interface for communicating with a network device (for example, a cellular network).
  • a network device for example, a cellular network
  • the method for adjusting the power density provided by 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 (also called the threshold) specified in the standard. If the power density in the direction of the currently used transmit 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 transmit beam is toward the target, if it is determined that the terminal device is close to the target and the direction of the transmit beam is directed For the target, the power density in the direction of the target needs to be reduced, that is, the power density is adjusted to be lower than the prescribed power density threshold.
  • the power density threshold also called the threshold
  • the factors that affect the power density include at least: transmit power, narrow beam width, and uplink transmit duration
  • the factors that affect the 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 value: 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 the 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 ratio of the uplink transmit duration. That is, there is a possibility that the transmission power does not exceed the specified transmission power threshold, but due to the relatively large uplink transmission duration, the power density may exceed the power density threshold. There is also a possibility that the proportion of the uplink transmission duration does not exceed the specified maximum uplink proportion, but due to the transmission power being too large, the power density may exceed the power density threshold. There is also a possibility that the ratio of the transmission power and the uplink transmission time exceeds the upper limit at the same time, and this solution is not limited.
  • the power density of the terminal device exceeds the power threshold, and it is detected that the terminal device is close to the target and the transmission beam is toward the target, the power density can be reduced to the specified power density threshold at least according to the following methods provided in this application :
  • Method 1 Reduce the transmit power of the transmit beam to less than the transmit power threshold.
  • Method 2 Select the beam that is not facing the target as the transmit beam.
  • Method 3 After reducing the transmit power of the transmit beam, the beam that is not directed to the target is switched as the transmit beam.
  • the following uses the target as a human body as an example, and through several embodiments, introduces the specific implementation that the terminal device determines that the power density exceeds the threshold value of the power density and reduces the power density below the prescribed power density threshold value.
  • FIG. 3 is an implementation flowchart of determining whether the power density exceeds the power density threshold provided in this application. As shown in FIG. 3, assume that the terminal device currently selects the first beam for transmission, that is, the currently used first beam, The specific implementation steps of the terminal device to determine whether the power density exceeds the power density threshold include:
  • the terminal device needs to detect the currently used first beam to obtain the current transmit power of the first beam, so as to be able to compare with the specified transmit power threshold to determine whether the transmit power exceeds the transmit power threshold value.
  • the uplink transmission duration ratio 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.
  • 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 to perform uplink transmission when needed. The window duration is read during the detection of the duration ratio, and the uplink transmission duration ratio of the first beam is detected and acquired within the window duration.
  • the detected uplink transmission duration ratio is compared with the pre-acquired uplink transmission duration ratio threshold. If the uplink transmission duration ratio does not exceed the uplink transmission duration ratio threshold, the power can be considered The density does not exceed the power density threshold, and it may not be processed. If the ratio of the uplink transmission duration exceeds the threshold of the uplink transmission duration, it is determined that the power density in the first beam direction exceeds the power density threshold.
  • the terminal device may also detect and obtain the uplink transmission duration within the window duration Proportion; if the ratio of the uplink transmission duration exceeds the threshold of the uplink transmission duration, the transmission power of the first beam is detected; if the transmission power of the first beam exceeds the transmission power threshold, Then, it is determined that the power density in the direction of the first beam exceeds the power density threshold.
  • the transmission beam of the terminal device is an uplink beam.
  • two parameters are involved, that is, the transmission power gate Limits and thresholds for the proportion of uplink transmission duration. These two parameters need to be tested during the production process of the terminal device or before leaving the factory, and these two parameters can be written in the protocol of the terminal device or stored in the terminal device in advance.
  • the test method for the threshold of the transmission power and the threshold of the ratio of the uplink transmission duration are described below.
  • 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 toward the target and the full uplink time slot is used for transmission.
  • the terminal device needs to select a suitable beam to perform.
  • Transmit in all uplink time slots meaning that all time slots perform uplink transmission, no downlink transmission
  • transform different transmit powers for transmission and calculate the power density in the beam direction so that the power density does not exceed the power density threshold
  • the maximum transmit power is used as the transmit power threshold of the beam, which can be expressed in XdBm.
  • the threshold of the ratio of the uplink transmission duration of any beam is the maximum ratio of the ratio of the uplink transmission duration when the beam is toward the target and is transmitted at the maximum transmission power, and the power density does not exceed the power density threshold. Similar to the above scheme, when the terminal device selects the transmit beam, when any beam is directed toward the human body and transmits with the maximum transmit power, the different uplink transmission duration ratio is adjusted, and the beam direction corresponding to the uplink transmission duration ratio is calculated The power density on the Internet, and then use the maximum uplink transmission ratio that does not exceed the power density threshold as the uplink transmission duration ratio threshold, which can be expressed as maxULDutyCycle. In this solution, it should be understood that the threshold value of the uplink transmission time ratio may have different values for different frequency bands.
  • the threshold value of the transmission power corresponding to each beam of the terminal device and the threshold value of the proportion of the uplink transmission duration can be obtained according to the above scheme.
  • the terminal device when it initially accesses the network, it can report the transmission power threshold and / or the uplink transmission duration threshold corresponding to each beam to the network device, and the network device can refer to the uplink transmission duration ratio
  • the threshold value is used to schedule resources for the terminal device, so as to avoid the problem that the proportion of uplink transmission time is too high, resulting in excessively high power density.
  • 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 flowchart of Embodiment 1 of the power density adjustment method provided by the present application. As shown in FIG. 4, the power density adjustment method 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 the transmit beam of the terminal device.
  • the terminal device has determined that the power density in the currently used first beam direction exceeds the specified power density threshold according to any of the foregoing methods. If the terminal device is far from the human body, even if it is a certain The power density in each direction is high and will not affect human tissues, 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, which is not limited. In addition, the distance between the terminal device and the human body can also 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 close to the human body.
  • the terminal device may detect its relative position 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 position relationship.
  • the terminal device may determine whether the direction of the first beam (that is, the currently used transmit beam) faces the human body. Since the direction of the beam is known to the terminal device, as long as the terminal device knows the relative position of the human body and it, it can determine whether the transmit beam is directed to the human body.
  • the built-in sensors of the terminal device include 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, thereby being able to determine whether the terminal device is working close to the human body
  • "close” 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 over a period of time. If it is another type of goal, it can also be achieved in this way.
  • the terminal device is close to the human body in the above manner, and the direction of the first beam is toward the human body, which is easy to cause damage to human tissue.
  • the solution provided by this solution is to direct the terminal device toward the human body.
  • the power density is adjusted to be less than the power density threshold.
  • this solution proposes a solution to reduce the power density, that is, the terminal device can reduce the transmission power of the first beam to be less than the transmission power threshold to ensure that the power density toward the human body is less than the power density threshold .
  • the terminal device reduces the transmission power by at least the following two methods:
  • the terminal device gradually reduces the transmission power of the first beam until the transmission power threshold value is lowered.
  • the power density can be calculated during this process, and it has been determined that the power density has also fallen below the threshold.
  • 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 determining that the transmission power needs to be reduced below the transmission power threshold, the terminal device 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 to transmit.
  • the maximum power back-off value (which can be expressed by MPR RFexposure ) means that when the terminal device scheduled for transmission by the network actually transmits more than the percentage of the uplink transmission duration reported by the terminal device to the network device, the terminal
  • the maximum power back-off value that can be applied by the device is the maximum power value that the terminal device can reduce.
  • the terminal device can calculate the maximum power back-off value according to the transmission power threshold and the maximum power value that can be transmitted. It should be understood that the maximum power back-off value has a corresponding value for different frequency bands, which can be obtained through experiments and stored in the terminal device.
  • the power backoff value is sent to the network device. The purpose is that the network device can determine whether to allow the terminal device to perform power backoff based on the maximum power backoff value reported by the terminal device.
  • this processing method requires the terminal device to report to the network the maximum power backoff value MPR RFexposure required by each beam (English: Beam) when the network device initially accesses the network, so that the network device can subsequently determine whether it can allow the transmit power to be reduced Maximum power back-off value MPR RFexposure .
  • the terminal device After determining that the power density exceeds the power density threshold, the terminal device 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 toward the human body, the terminal device can pass The way to reduce the transmit power of the first beam is to adjust the power density below the power density threshold to avoid electromagnetic waves from damaging human tissues, and to use a narrow-band beam to increase the uplink coverage while ensuring that the power density does not exceed the standard.
  • FIG. 5a is a flowchart of Embodiment 2 of the power density adjustment method provided by the present application. As shown in FIG. 5, the power density adjustment method provided by this implementation specifically includes the following steps:
  • step S201 is similar to step S201 in the embodiment shown in FIG. 4, and for the implementation manner thereof, reference may be made to the explanation of step S201, and details are not described herein again.
  • the terminal device is close to the human body, and the direction of the first beam is toward the human body, at this time, it is easy to cause damage to human tissue.
  • the solution provided by this solution is to use the terminal
  • the power density of the device toward the human body is adjusted to be less than the power density threshold.
  • this solution proposes a solution to reduce the power density, that is, the terminal device can switch the transmission beam, by switching the transmission beam to another beam that is not facing the human body, to avoid electromagnetic waves from harming the human body, so the terminal equipment needs
  • the second beam is selected from other beams that are not facing the human body, and can subsequently be switched to the second beam for transmission, thereby reducing the power density toward the user.
  • the manner in which the terminal device selects the second beam includes at least:
  • the second beam is a beam determined according to the received signal quality corresponding to the beam except the direction toward 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 toward the human body, the beam with the best received signal quality, the beam with the second best received quality, or other beams This plan does not limit.
  • the terminal device may use multiple beams other than the direction toward the human body for alternate transmission, and receive the received signal quality corresponding to each beam 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 toward the human body.
  • the network device receives the signal sent by each beam of the terminal device, 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.
  • the second beam is selected by the terminal device itself, so the network device can 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 that is not directed toward the human body and fed back by the network device, and then selects the beam with the best received signal quality as the second beam.
  • the second beam is a beam randomly selected from a plurality of beams except the direction toward the target. That is, the terminal device may randomly select one beam as the second beam from multiple beams except for the direction toward the human body.
  • the terminal device determines which beams are not facing the human body according to the direction of each beam and the relative positional relationship between the terminal device and the human body. Then, randomly select one of these multiple beams not facing the human body as the second beam.
  • FIG. 5b is a schematic diagram of the transmission beam switching provided by this application. As shown in FIG. 5b, the transmission beam before switching in this scheme is toward the human body The transmitted beam after switching is not directed toward the human body, which reduces the power density toward the human body and prevents electromagnetic waves from harming human tissues.
  • the terminal device since the terminal device has confirmed that the power density exceeds the power density threshold, the terminal device is close to the human body and the beam direction is toward 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 bit. 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 way to reduce the transmission power is similar to the embodiment shown in FIG. 2.
  • reducing the transmission power of the first beam can further prevent the electromagnetic waves from damaging human tissue during the process of selecting the second beam and switching the beam.
  • the terminal device after determining that the power density exceeds the power density threshold, the terminal device 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 toward the human body, the terminal device can pass Switch to a beam that does not face the human body to transmit, adjust the power density to below the power density threshold, and further reduce the power before switching the beam, minimize the time that electromagnetic waves radiate the human body, and further prevent electromagnetic waves from causing human tissue Injury, ensure that the power density does not exceed the standard.
  • FIG. 6 is a flowchart of Embodiment 3 of the power density adjustment method provided by the present application. As shown in FIG. 6, this embodiment provides a connection between the terminal device and the network device.
  • the negotiated power reduction or beam switching scheme 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 terminal device's transmit beam and the pre-acquired maximum power backoff value.
  • the network device first needs to determine that the power density of the terminal device exceeds the power density threshold.
  • the terminal device reports.
  • the terminal device when the terminal device detects that the power density in the direction of the transmit beam exceeds the threshold value, it sends first indication information to the network device, where the first indication information is used to indicate the transmit beam of the terminal device (that is, the foregoing terminal device side embodiment The power density of the first beam in) exceeds the power density threshold.
  • the network device For the network device, it receives the first indication information sent by the terminal device, and determines that the power density of the terminal device exceeds the threshold value of the power density according to the first indication information.
  • the network equipment performs the detection and calculation.
  • the network device calculates and acquires the power density of the terminal device according to the transmission power of the first beam used by the terminal device and the proportion of the uplink transmission duration configured for the terminal device. Then, the calculated power density is compared with the power density threshold to determine whether the power density exceeds the power density threshold.
  • the terminal device needs to send the maximum power back-off value to the network device.
  • the network device judges that the terminal device is allowed to directly reduce the transmit power to the maximum power back-off value, depending on whether the reduced transmit power is lower than the required minimum transmit power. Because the transmit power is too low, it is easy to cause the problem of not receiving or even dropping Therefore, it cannot be arbitrarily reduced.
  • this step if the network device determines that the difference between the transmission power of the first beam and the maximum power back-off value is less than the minimum power value obtained in advance, 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.
  • the specific method of reducing the transmission power is similar to the embodiment shown in FIG. This will not be repeated here.
  • S402 If the terminal device is not allowed to reduce the transmit power by the maximum power backoff value, send second indication information to the terminal device, where the second indication information is used to instruct the terminal device to perform beam switching.
  • the beam can also be switched, so the network device can instruct the terminal device to perform Switching, that is, sending the second indication information to the terminal device, and for the terminal device, receiving the second indication information sent by the network device, and subsequently switching the transmit beam from the current first beam to the current beam according to the scheme in the foregoing embodiment The second beam.
  • the second indication information may further include the second beam selected by the network device, or the first beam.
  • the identification information of the two beams does not limit this solution.
  • the terminal device determines that the power density exceeds the power density threshold value, it detects the state of the terminal device. To reduce the maximum power back-off value by transmitting power, you need to negotiate with the network equipment to determine. If the maximum power back-off value cannot be lowered, you can switch the beam to solve the problem of too high power density to avoid network equipment caused by too much transmission power reduction. When the signal is not received, the terminal device is disconnected. At the same time, the power density can be adjusted below the power density threshold to avoid electromagnetic waves from harming human tissues and ensuring 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 this application. As shown in FIG. 7, the terminal device 100 includes:
  • the detection module 111 is configured to detect whether the terminal device is close to the target if the power density in the direction of the first beam of the terminal device exceeds the power density threshold, wherein the first beam is the terminal device 'S transmit beam;
  • the processing module 112 is configured to adjust the power density of the terminal device toward 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 toward the target.
  • the terminal device provided in this embodiment is used to execute the technical solution on the terminal device side in any of the foregoing method embodiments.
  • the implementation principle and technical effect are similar. Adjusting the power density of the terminal device toward the target does not exceed the specified threshold, which is effective Avoid the problem that the power density of the millimeter wave terminal equipment exceeds the standard.
  • processing module 112 is further used to:
  • the transmit power of the first beam and / or the ratio of the uplink transmit duration of the first beam within a preset window duration, determine whether the power density in the direction of the first beam exceeds all Describe the power density threshold.
  • processing module 112 is specifically used to:
  • the uplink transmission duration ratio exceeds the uplink transmission duration ratio threshold, it is determined that the power density in the direction of the first beam exceeds the power density threshold;
  • the transmission power of the first beam is detected
  • the transmission power of the first beam exceeds the transmission power threshold, it is determined that the power density in the direction of the first beam exceeds the power density threshold.
  • the processing module 112 is specifically configured to:
  • processing module 112 is specifically used to:
  • the terminal device provided in any one of the foregoing implementation manners is used to execute the technical solution on the terminal device side in any one of the foregoing method embodiments, and its implementation principles and technical effects are similar, and are not repeated here. ,
  • the second beam is a beam determined according to the received signal quality corresponding to the beam except the direction toward the target.
  • FIG. 8 is a schematic structural diagram of Embodiment 2 of a terminal device provided by this application. As shown in FIG. 8, the terminal device 100 further includes:
  • the transmitting module 113 is configured to use multiple beams in addition to the direction toward the target for alternate transmission;
  • the receiving module 114 is configured to receive the received signal quality corresponding to each beam of the multiple beams returned by the network device;
  • the processing module 112 is further configured to select the beam with the best received signal quality from the plurality of beams except the direction toward the target according to the received signal quality corresponding to each beam as the second beam.
  • the second beam is a beam randomly selected from a plurality of beams except for the direction toward the target.
  • processing module 112 is specifically used to:
  • One beam is randomly selected from the plurality of beams except the direction toward the target as the second beam.
  • the processing module 112 is further configured to reduce the transmit power of the first beam to less than the transmit power threshold before selecting the second beam.
  • processing module 112 is specifically used to:
  • the terminal device provided in any one of the foregoing implementation manners is used to execute the technical solution on the terminal device side in any one of the foregoing method embodiments, and its implementation principles and technical effects are similar, and are not repeated here.
  • FIG. 9 is a schematic structural diagram of Embodiment 3 of a terminal device provided by 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 the initial access to the network.
  • the sending module 115 is further configured to send first indication information to the network device, the first indication The information is used to indicate that the power density of the first beam exceeds the power density threshold;
  • 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.
  • 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.
  • the sending module 115 is configured to report the threshold value of the uplink transmission duration ratio of each beam within the window duration to the network device.
  • the transmit power threshold of any beam is that when the beam is toward the target and the full uplink time slot is used for transmission, the power density does not exceed the power density threshold Maximum transmit power.
  • processing module 112 is also used to:
  • the threshold value of the ratio of the uplink transmission duration of any beam is the maximum ratio of the ratio of the maximum uplink transmission duration when the beam is toward the target and is transmitted at the maximum transmission power, and the power density does not exceed the power density threshold.
  • processing module 112 is also used to:
  • the maximum uplink transmission ratio value whose power density does not exceed the power density threshold value is taken as the uplink transmission duration ratio threshold value.
  • the terminal device 100 further includes:
  • the storage module 116 is configured to store a transmission power threshold value corresponding to each beam and an uplink transmission duration ratio threshold value.
  • the detection module 111 is specifically used to:
  • processing module 112 is further configured to determine whether the direction of the first beam is toward the target according to the relative position relationship and the direction of the first beam.
  • the target includes a human body.
  • the terminal device provided in any one of the foregoing implementation manners is used to execute the technical solution on the terminal device side in any one of the foregoing method embodiments, and its implementation principles and technical effects are similar, and are not repeated here.
  • FIG. 11 is a schematic structural diagram of Embodiment 1 of a network device provided by this application. As shown in FIG. 11, the network device 200 includes:
  • the processing module 211 is configured to determine whether to allow the terminal device to transmit according to the transmit power of the transmit beam of the terminal device and the pre-acquired maximum power backoff value if the power density of the terminal device exceeds the power density threshold value The power is reduced by the maximum power back-off value;
  • the sending module 212 is configured to send second indication information to the terminal device if the terminal device is not allowed to reduce the transmit power by the maximum power backoff value;
  • the second indication information is used to instruct the terminal device to perform beam switching.
  • processing module 211 is specifically used to:
  • the terminal device If the difference between the transmission power of the transmit beam and the maximum power backoff value is less than the minimum power value obtained in advance, the terminal device is not allowed to reduce the transmission power by the maximum power backoff value;
  • the terminal device is allowed to reduce the transmission power by the maximum power back-off value.
  • the network device 200 further includes:
  • the receiving module 213 is 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;
  • the processing module 211 is specifically used to:
  • the network device provided in this embodiment is used to execute the technical solution on the network device side in any one of the foregoing method embodiments, and its implementation principles and technical effects are similar, and are not repeated here.
  • FIG. 12 is a schematic structural diagram of Embodiment 5 of a terminal device provided by this application. As shown in FIG. 12, the terminal device 300 includes:
  • the memory 312 stores computer execution instructions
  • the processor 311 executes 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 embodiments of the present application do not limit the number of processors and memories in the terminal device.
  • FIG. 12 only uses the number 1 as an example for illustration.
  • FIG. 13 is a schematic structural diagram of Embodiment 2 of a network device provided by this application. As shown in FIG. 13, the network device 400 includes:
  • a processor 411 a memory 412, and an interface 413 for communicating with a terminal device;
  • the memory 412 stores computer-executed instructions
  • the processor 411 executes 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 embodiments of the present application do not limit the number of processors and memories in the network device.
  • FIG. 13 only uses the number 1 as an example for illustration.
  • the memory, the processor, and the interface may be connected by a bus.
  • the memory may be integrated inside the processor.
  • Embodiments of the present application also provide a computer-readable storage medium.
  • the computer-readable storage medium stores computer-executable instructions.
  • the terminal device in any of the foregoing method embodiments is implemented.
  • Embodiments of the present application also provide a computer-readable storage medium, which stores computer-executable instructions, and when the computer-executed instructions are executed by a processor, is used to implement the network in any of the foregoing method embodiments Technical solutions for equipment.
  • An embodiment of the present application further provides a program, which when executed by the processor, is used to execute the technical solution of the terminal device in any of the foregoing method embodiments.
  • An embodiment of the present application further provides a program, which when executed by the processor, is used to execute the technical solution of the network device in any of the foregoing method embodiments.
  • the above processor may be a chip.
  • Embodiments of the present application also provide a computer program product, including program instructions, which are used to implement the technical solution of the terminal device in any of the foregoing method embodiments.
  • An embodiment of the present application also provides a computer program product, including program instructions, which are used to implement the technical solution of the network device in any of the foregoing method embodiments.
  • An embodiment of the present application further provides a chip, including: a processing module and a communication interface, the processing module can execute the technical solution on the terminal device side in any of the foregoing method embodiments.
  • the chip further includes a storage module (eg, a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored by the storage module, and the execution of the instructions stored in the storage module causes the processing module to perform any of the foregoing The technical solution on the terminal device side in the method embodiment.
  • a storage module eg, a memory
  • the storage module is used to store instructions
  • the processing module is used to execute the instructions stored by the storage module
  • the execution of the instructions stored in the storage module causes the processing module to 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, the processing module can execute the technical solution on the network device side in any of the foregoing method embodiments.
  • the chip further includes a storage module (eg, a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored by the storage module, and the execution of the instructions stored in the storage module causes the processing module to perform any of the foregoing The technical solution on the network device side in the method embodiment.
  • a storage module eg, a memory
  • the storage module is used to store instructions
  • the processing module is used to execute the instructions stored by the storage module
  • the execution of the instructions stored in the storage module causes the processing module to perform any of the foregoing The technical solution on the network device side in the method embodiment.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the modules is only a division of logical functions.
  • there may be other divisions for example, multiple modules may be combined or integrated To another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, and the indirect coupling or communication connection of the module may be in electrical, mechanical, or other forms.
  • the processor may be a central processing unit (English: Central Processing Unit, referred to as: CPU), or other general-purpose processors, digital signal processors (English: Digital Signal Processor, abbreviation: DSP), Application Specific Integrated Circuit (English: Application Specific Integrated Circuit, abbreviation: ASIC), etc.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in this application may be directly implemented and completed by a hardware processor, or may be implemented and completed by a combination of hardware and software modules in the processor.
  • the aforementioned program can be stored in a readable memory.
  • the steps including the above method embodiments are executed; and the aforementioned memory (storage medium) includes: read-only memory (English: read-only memory, ROM for short), RAM, flash memory, hard disk, Solid-state hard disk, magnetic tape (English: magnetic), floppy disk (English: floppy disk), optical disk (English: optical) and any combination thereof.

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Abstract

L'invention concerne un procédé de réglage de densité de puissance, un dispositif et un support de stockage. Le procédé s'applique à un dispositif terminal et comprend les étapes suivantes : si la densité de puissance du dispositif terminal dans la direction d'un premier faisceau, qui est un faisceau de transmission du dispositif terminal, dépasse une valeur seuil de densité de puissance, détecter si le dispositif terminal est proche d'une cible prédéfinie ; si le dispositif terminal est proche de la cible et que la direction du premier faisceau s'oriente vers la cible, régler la densité de puissance du dispositif terminal vers la cible à une valeur inférieure à la valeur seuil de densité de puissance. Selon le procédé, la densité de puissance du dispositif terminal vers le corps humain est réglée pour ne pas dépasser la valeur seuil spécifiée, ce qui permet d'empêcher efficacement la densité de puissance d'un dispositif terminal à ondes millimétriques de dépasser la norme.
PCT/CN2018/116802 2018-11-21 2018-11-21 Procédé de réglage de densité de puissance, dispositif et support de stockage WO2020103056A1 (fr)

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