Security specification verification method of mobile device and method for determining upper limit of transmission power thereof

Abstract

A security specification verification method for a mobile device, the mobile device comprising an antenna module, the security specification verification method comprising: measuring a first transmission power of the antenna module at a trigger distance of a distance sensor of the mobile device; acquiring a power density design target profile based on the first transmit power on a selected surface at a predetermined distance from the mobile device; acquiring a range sensing plane coverage of the range sensor on the selected surface at a predetermined distance from the mobile device; comparing whether the range sensing plane coverage area surrounds the power density to design a target contour; and when the range sensing plane coverage of the range sensor fails to surround the power density design target profile, adjusting the first transmission power to a second transmission power until the range sensing plane coverage surrounds the power density design target profile. The method can be suitable for security authentication of the FR2 and increase the upper limit of the transmission power as much as possible.

Description

Technical Field

[0001] The present invention generally relates to a method for verifying security specifications for a mobile device, and a method for determining an upper limit of transmission power for a mobile device or an antenna module. Background Art

[0002] 5G New Radio (5G NR), the radio access technology of 5G mobile networks, has its frequency bands divided into two different ranges. The first range, called Frequency Range 1 (FR1 for short), includes frequency bands below 6 GHz. Some of these frequency bands have been traditionally used by previous generation standards but have now been extended and may include new spectra from 410 MHz to 7125 MHz. The second range, called Frequency Range 2 (FR2) or millimeterWave (mmW for short), covers frequency bands from 24.25 GHz to 71.0 GHz. In addition, frequency bands in the sub-6 GHz range are also allocated for non-terrestrial network use.

[0003] Currently, the authentication process for distance sensing only focuses on the FR1 frequency band (such as FCC KDB 616217). However, the security specifications of the Specific Absorption Rating (SAR) in FR1 and the Power Density (PD) in FR2 have different characteristics. Therefore, an authentication process specifically designed for distance sensing in millimeter-wave antenna modules is needed to ensure compliance with security specifications.

[0004] In addition, how to improve the distance sensing plane coverage of millimeter-wave antenna modules with distance sensing characteristics to increase the transmission power of millimeter-wave antenna modules is one of the efforts in the industry. Summary of the Invention

[0005] To solve the above problems, the present invention provides a method for verifying security specifications for a mobile device, and a method for determining an upper limit of transmission power for a mobile device or an antenna module, to be applicable to the security authentication of FR2 and to raise the upper limit of transmission power as much as possible.

[0006] According to one embodiment, a method for verifying a security specification for a mobile device is provided. The mobile device includes an antenna module. The security specification verification method includes: measuring a first transmission power of the antenna module at a trigger distance of a distance sensor of the mobile device; obtaining a power density design target profile on a selected surface at a predetermined distance from the mobile device based on the first transmission power; obtaining a distance sensing plane coverage range of the distance sensor on the selected surface at the predetermined distance from the mobile device; comparing whether the distance sensing plane coverage range surrounds the power density design target profile; and when the distance sensing plane coverage range of the distance sensor fails to surround the power density design target profile, adjusting the first transmission power to a second transmission power until the distance sensing plane coverage range surrounds the power density design target profile.

[0007] In some embodiments, after the step of adjusting the first transmission power to the second transmission power, a transmission power upper limit is determined according to the second transmission power, and when the distance sensing plane coverage range surrounds the power density design target profile, the transmission power upper limit is determined according to the first transmission power. In some embodiments, the step of adjusting the first transmission power includes: directly reducing the first transmission power or reducing the trigger distance to reduce the first transmission power. In some embodiments, the transmission power upper limit is determined to be equal to the first transmission power or the second transmission power. In some embodiments, the distance sensor is integrated in the antenna module, or the distance sensor is externally disposed relative to the antenna module and adjacent to the antenna module. In some embodiments, it further includes: obtaining another power density design target profile on another selected surface at the predetermined distance from the mobile device; obtaining another distance sensing plane coverage range of the distance sensor on the another selected surface at the predetermined distance from the mobile device; comparing the another distance sensing plane coverage range and the another power density design target profile on the another selected surface; determining another transmission power upper limit according to the comparison result; and selecting the minimum value from the transmission power upper limit and the another transmission power upper limit as the final transmission power upper limit. In some embodiments, when the antenna is at the first transmission power, the maximum power density obtained on the plane of the trigger distance is less than or equal to the power density design target. In some embodiments, the power density design target profile is a profile including a plurality of points on the selected surface that are equal to the power density design target. In some embodiments, the distance sensing plane coverage range of the distance sensor is a closed shape, obtained by mapping the distance sensing features of the distance sensor to the selected surface at the predetermined distance from the mobile device.

[0008] According to another embodiment, a method for determining a transmission power upper limit of a mobile device is provided. The mobile device includes an antenna module. The method includes: measuring a first transmission power of the antenna module at a trigger distance of a distance sensor of the mobile device; obtaining a power density design target profile based on the first transmission power on a selected surface at a predetermined distance from the mobile device; obtaining a distance sensing plane coverage range of the distance sensor on the selected surface at the predetermined distance from the mobile device; comparing the distance sensing plane coverage range and the power density design target profile on the selected surface; and determining the transmission power upper limit according to the comparison result.

[0009] In some embodiments, the step of comparing the distance sensing plane coverage range and the power density design target profile on the selected surface includes: comparing whether the distance sensing plane coverage range surrounds the power density design target profile. In some embodiments, when the distance sensing plane coverage range fails to surround the power density design target profile, the first transmission power is adjusted to a second transmission power until the distance sensing plane coverage range surrounds the power density design target profile, and the upper limit of the transmission power is determined according to the second transmission power, and when the distance sensing plane coverage range surrounds the power density design target profile, the upper limit of the transmission power is determined according to the first transmission power. In some embodiments, the step of adjusting the first transmission power includes: directly reducing the first transmission power or reducing the trigger distance to reduce the first transmission power. In some embodiments, the upper limit of the transmission power is determined to be equal to the first transmission power or the second transmission power. In some embodiments, the trigger distance of the distance sensor is a predetermined distance; or the trigger distance is determined according to the distance characteristics of the distance sensor. In some embodiments, the distance sensor is integrated in the antenna module, or the distance sensor is externally disposed relative to the antenna module and adjacent to the antenna module. In some embodiments, it further includes: obtaining another power density design target profile on another selected surface at the predetermined distance from the mobile device; obtaining another distance sensing plane coverage range of the distance sensor on the another selected surface at the predetermined distance from the mobile device; comparing the another distance sensing plane coverage range and the another power density design target profile on the another selected surface; determining another upper limit of the transmission power according to the comparison result; and selecting the minimum value from the upper limit of the transmission power and the another upper limit of the transmission power as the final upper limit of the transmission power. In some embodiments, when the antenna is at the first transmission power, the power density obtained on the plane at the trigger distance is less than or equal to the power density design target. In some embodiments, the power density design target profile is a profile including a plurality of points on the selected surface that are equal to the power density design target. In some embodiments, the distance sensing plane coverage range of the distance sensor is a closed shape, obtained by mapping the distance sensing characteristics of the distance sensor to the selected surface at the predetermined distance from the mobile device.

[0010] According to another embodiment, a method for determining the transmission power upper limit of an antenna module is provided, and the method includes: measuring a first transmission power of the antenna module at a trigger distance of the distance sensor; obtaining a power density design target profile on a selected surface at a predetermined distance from the antenna module based on the first transmission power; obtaining a distance sensing plane coverage range of the distance sensor on the selected surface at the predetermined distance from the antenna module; comparing the distance sensing plane coverage range and the power density design target profile on the selected surface; and determining the transmission power upper limit according to the comparison result.

[0011] In some embodiments, the step of comparing the distance sensing plane coverage and the power density design target profile on the selected surface includes: comparing whether the distance sensing plane coverage surrounds the power density design target profile. In some embodiments, when the distance sensing plane coverage fails to surround the power density design target profile, the first transmission power is adjusted to a second transmission power until the distance sensing plane coverage surrounds the power density design target profile, and the upper limit of the transmission power is determined according to the second transmission power, and when the distance sensing plane coverage surrounds the power density design target profile, the upper limit of the transmission power is determined according to the first transmission power. In some embodiments, the step of adjusting the first transmission power includes: directly reducing the first transmission power or reducing the trigger distance to reduce the first transmission power. In some embodiments, the upper limit of the transmission power is determined to be equal to the first transmission power or the second transmission power. In some embodiments, the trigger distance of the distance sensor is a predetermined distance; or the trigger distance is determined according to the distance characteristics of the distance sensor. In some embodiments, the distance sensor is integrated in the antenna module, or the distance sensor is externally disposed relative to the antenna module and adjacent to the antenna module. In some embodiments, it further includes: obtaining another power density design target profile on another selected surface at the predetermined distance from the antenna module; obtaining another distance sensing plane coverage of the distance sensor on the another selected surface at the predetermined distance from the antenna module; comparing the another distance sensing plane coverage and the another power density design target profile on the another selected surface; determining another upper limit of the transmission power according to the comparison result; and selecting the minimum value from the upper limit of the transmission power and the another upper limit of the transmission power as the final upper limit of the transmission power. In some embodiments, when the antenna module is at the first transmission power, the power density obtained on the plane at the trigger distance is less than or equal to the power density design target. In some embodiments, the power density design target profile is a profile including a plurality of points on the selected surface that are equal to the power density design target. In some embodiments, the distance sensing plane coverage of the distance sensor is a closed shape, obtained by mapping the distance sensing characteristics of the distance sensor to the selected surface at the predetermined distance from the mobile device.

[0012] By adopting the above solution of the present invention, the mobile device and the antenna module can complete the security authentication method applicable to FR2, and can increase the upper limit of the antenna transmission power of the mobile device and the antenna module as much as possible, thereby further improving the performance and user experience of the mobile device and the antenna module. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Shows an electronic mobile device according to an embodiment of the present application.

[0014] Figure 2 Disclosed is a method for verifying the safety specification of an antenna module with distance sensing features according to an embodiment of the present application.

[0015] Figure 3 and Figure 4 Disclosed is a power density distribution diagram on different selected surfaces according to an embodiment of the present application.

[0016] Figure 5 Disclosed is the structure of an antenna module according to another embodiment of the present application.

[0017] Figure 6 Disclosed is an electronic mobile device according to an embodiment of the present application.

[0018] Figure 7 Disclosed is a method for determining the transmission power upper limit of an antenna module or an electronic device (or a mobile device) according to an embodiment of the present application. Detailed Description of the Embodiment

[0019] In the following detailed description of the embodiments of the present invention, reference is made to the accompanying drawings, which form a part of the present invention, and in the drawings, specific preferred embodiments in which the present invention can be practiced are shown by way of illustration. The embodiments are described in sufficient detail to enable those skilled in the art to practice them, and it should be understood that other embodiments can be utilized and mechanical, structural, and procedural changes can be made without departing from the spirit and scope of the present invention. The present invention. Therefore, the following detailed description should not be construed as restrictive, and the scope of the embodiments of the present invention is defined only by the appended claims. The described drawings are merely illustrative and not restrictive. In the drawings, for the purpose of illustration, the dimensions of some elements may be enlarged rather than drawn to scale. In the practice of the present invention, the dimensions and relative dimensions do not correspond to the actual dimensions.

[0020] It will be understood that although the terms "first", "second", "third", "primary", "secondary", etc. may be used herein to describe various components, components, regions, layers, and / or parts, these components, components, regions, these layers, and / or parts should not be limited by these terms. These terms are only used to distinguish one component, component, region, layer, or part from another region, layer, or part. Thus, without departing from the teachings of the inventive concept, the first or primary component, component, region, layer, or part discussed below may be referred to as the second or secondary component, component, region, layer, or part.

[0021] In addition, for ease of description, spatial relative terms such as "below", "beneath", "under", "above", "over" and the like may be used herein to describe the relationship of one component or feature to another. Another component or feature as shown in the figure. In addition to the orientation described in the figure, spatial relative terms are also intended to cover different orientations of the device during use or operation. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptors used herein may be interpreted accordingly. Additionally, it will be understood that when a "layer" is referred to as being "between" two layers, it may be the only layer between the two layers, or there may be one or more intermediate layers.

[0022] The terms "about", "substantially" and "approximately" generally mean within ±20%, or within ±10%, or within ±5%, or within ±3%, or within ±2%, or within ±1%, or within ±0.5% of a specified value. The specified values of the present invention are approximate values. When not specifically described, the specified values include the meanings of "about", "substantially" and "approximately". The terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the present invention. As used herein, the singular terms "a", "an" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise. The terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the inventive concept. As used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0023] It will be understood that when a "component" or "layer" is referred to as being "on", "connected to", "coupled to" or "adjacent to" another component or layer, it may be directly on, connected to, coupled to or adjacent to the other component or layer, or there may be intermediate components or layers. In contrast, when a component is referred to as being "directly on", "directly connected to", "directly coupled to" or "immediately adjacent to" another component or layer, there are no intermediate components or layers.

[0024] Note: (i) Like features will be denoted by like reference numerals throughout the figures and need not be described in detail in each figure in which they appear, and (ii) a series of figures may show different aspects of a single item, each aspect being associated with various reference labels which may appear throughout the sequence or may appear only in selected figures of the sequence.

[0025] To comply with safety regulations, it may be necessary to increase the transmission power of the antenna. Complying with safety regulations typically involves restrictions on electromagnetic radiation and human exposure to ensure that the use of the wireless device does not pose a risk to human health. Specific limits and standards are set according to the regulations and standards of different countries, such as specific bit rate, power density, or specific absorption rate.

[0026] If the relevant regulations and standards are met and the device passes the necessary tests and certifications, an increase in the transmission power of the antenna is allowed within the defined safety limits. However, it is important to ensure that this increase does not exceed the limits set by the regulations and standards and does not have any adverse effects on the user or the surrounding environment. Therefore, it is recommended to conduct appropriate tests and verifications before increasing the transmission power of the antenna to ensure compliance with safety regulations.

[0027] Figure 1 Shows an electronic mobile device according to an embodiment of the present application. An electronic mobile device (or mobile device) 100 according to an embodiment of the present application includes an antenna module 120 and other elements (not shown). For example but not limited to, the antenna module 120 is a millimeterWave (mmW) module. Surfaces S1 to S6 are the outer surfaces of the electronic mobile device 100. In Figure 1 which, the position of the antenna module 120 on the electronic mobile device 100 is only an example and does not limit the present application.

[0028] As Figure 1 shown, the antenna module 120 radiates towards the S5 surface. In some embodiments, the mobile device 100 includes a proximity sensor (p-sensor) that can sense the distance between a target object (such as an object or a human body) and the distance sensor. In some embodiments, the distance sensor is integrated in the antenna module 120. In other embodiments, the distance sensor is located outside the antenna module 120 and adjacent to the antenna module 120. In an embodiment of the present application, the distance sensor integrated in the antenna module is taken as an example for illustration, which is not intended to limit the present application. For example, the antenna module 120 has a proximity sensing feature, or in other words, the antenna module 120 has a proximity sensor (p-sensor). When the antenna module 120 emits radiation, it may have an adverse effect on humans. When the distance sensor (p-sensor) in the antenna module 120 detects that the distance between the human body and the antenna module 120 is too close, it is necessary to reduce the transmission power of the antenna module 120.

[0029] Figure 2Shows a method for verifying the safety specifications of a mobile device 100 with distance sensing features according to an embodiment of the present application. The selected surface for safety specification verification will depend on the position of the antenna module 120. For example, in Figure 1 S1, S2, and S5 surfaces will be selected one by one for safety specification verification.

[0030] In step S200, the first transmission power of the antenna module 120 at the trigger distance of the distance sensor of the mobile device 100 is measured.

[0031] In step S202, on the selected surface (e.g., but not limited to, S1, S2, and S5 surfaces will be selected one by one) at a predetermined distance from the mobile device 100, a power density design target profile is obtained based on the first transmission power. The predetermined distance from the antenna module (or mobile device) 120 is, for example, but not limited to, 2 mm, which is the shortest allowable distance (or the worst-case predetermined distance) at which the radiation of the antenna module (or mobile device) will not cause harm to the human body. In an embodiment of the present application, on the power density distribution map, based on the predetermined power density design target, all points on the power density distribution map equal to the predetermined power density design target are selected and connected to form a power density design target profile. That is, in an embodiment of the present application, the power density design target profile is a profile that includes all points or multiple points on the selected surface equal to the power density design target. In some embodiments, the power density design target may be a predetermined value. The power density design target can be set according to specifications (e.g., it can be an industry standard, etc.). For example, the power density design target is set equal to the upper limit specified in the specification, or the power density design target is set less than the upper limit specified in the specification.

[0032] In step S204, on the selected surface at a predetermined distance from the mobile device 100, the distance sensing plane coverage of the distance sensor is obtained. The distance sensing plane coverage of the distance sensor is the image of the distance sensor coverage on the selected surface. The distance sensing plane coverage of the distance sensor is usually in the shape of a closed loop and can be a regular or irregular shape. The distance sensing plane coverage of the distance sensor is a closed shape obtained by mapping the distance sensing features of the distance sensor onto the selected surface. The distance sensing plane coverage is defined as the p sensor detection area ability at a predetermined distance (e.g., at a worst-case distance of 2 mm). Details regarding obtaining the distance sensing plane coverage of the p sensor are not discussed here.

[0033] In step S206, it is compared whether the coverage range of the distance sensing plane surrounds the power density design target contour.

[0034] When the coverage range of the distance sensing plane of the P sensor fails to surround the power density design target contour (No in step S206), in step S208, the first transmission power is adjusted to the second transmission power until the coverage range of the distance sensing plane surrounds the power density design target contour. In step S208, the step of adjusting the first transmission power includes: directly reducing the first transmission power or reducing the trigger distance to reduce the first transmission power until the coverage range of the distance sensing plane surrounds the power density design target contour, and determining the second transmission power as the upper limit of the transmission power. In addition, when the coverage range of the distance sensing plane surrounds the power density design target contour, the safety specification verification passes. Among them, the second transmission power is less than the first transmission power. In some embodiments, by reducing the first transmission power to the second transmission power, the power density design target contour (or the power density design target contour area) can be reduced, so that the coverage range of the distance sensing plane can surround the power density design target contour. In some embodiments, when the power density design target contour is equal to the coverage range of the distance sensing plane on the selected surface, it can be considered that the coverage range of the distance sensing plane surrounds the power density design target contour.

[0035] After adjusting (or reducing) the first transmission power to the second transmission power in step S208, the upper limit of the transmission power is determined in step S210 according to the second transmission power. For example, the upper limit of the transmission power is determined to be equal to the second transmission power.

[0036] Furthermore, when the coverage range of the distance sensing plane surrounds the power density design target contour (Yes in step S206), which means the safety specification verification passes, the upper limit of the transmission power is determined in step S212 according to the first transmission power. For example, the upper limit of the transmission power is determined to be equal to the first transmission power.

[0037] In some embodiments, Figure 2 the safety specification verification method further includes: obtaining another power density design target contour on another selected surface (such as surface S1, S2, S3 or S4) at a predetermined distance from the antenna module (or the mobile device); obtaining another coverage range of the distance sensing plane of the distance sensor on another selected surface at a predetermined distance from the antenna module (or the mobile device, or the P-sensor); comparing the another coverage range of the distance sensing plane and the another power density design target contour on the another selected surface; determining another upper limit of the transmission power according to the comparison result; and selecting the minimum value from the upper limit of the transmission power and the another upper limit of the transmission power as the final upper limit of the transmission power.

[0038] In one embodiment of the present application, Figure 2 In the safety specification verification method shown, when the antenna is at the first transmission power, the maximum power density obtained on the plane of the trigger distance is less than or equal to the power density design target (e.g., the maximum value specified by the specification). In one embodiment of the present application, Figure 2 In the safety specification verification method shown, the power density design target profile is a profile that includes multiple points equal to the power density design target on the selected surface. In one embodiment of the present application, Figure 2 In the safety specification verification method shown, the coverage range of the distance sensing plane of the distance sensor is a closed shape, which is obtained by mapping the distance sensing feature of the distance sensor to the selected surface at a predetermined distance from the mobile device. In one embodiment of the present application, the power of the antenna module 120 is adjusted so that the power density obtained at the trigger distance (e.g., 5 cm) of the P-sensor is less than or equal to the value specified by the specification. At this time, the power of the antenna module 120 can be determined as the first transmission power. The first transmission power is used for the following operations. Adjusting the power of the antenna module 120 also provides a reference power density on the plane selected when determining the power density design target profile.

[0039] In addition, in one embodiment of the present application, at a predetermined distance (e.g., but not limited to, 2 mm) on the selected plane, a power density design target profile based on the power density of the specification is obtained. When defining the power density design target profile, the power density corresponding to the first transmission power on the selected plane is used as a reference to obtain the power density design target profile. The formation of the power density design target profile is determined according to the power density specified by the specification. However, the size of the power density design target profile on the selected plane is affected by the first transmission power. Therefore, based on the first transmission power, the power density design target profile is determined on the selected plane according to the predetermined power density design target. The predetermined distance on the selected plane is 2 mm, and the change in distance causes a change in power density.

[0040] In one embodiment of the present application, basically, all surfaces S1 - S6 are selected one by one for Figure 2 the safety specification verification process shown. However, in order to skip the repeated safety specification verification process, based on the position and structure of the antenna module 120, the surfaces that are too far from the antenna module 120 are skipped in the safety specification verification process. For example, as Figure 1 shown, surfaces S1, S2, and S5 will be selected one by one for safety specification verification; while surfaces S3, S4, and S6 (farther from the antenna module 120) will be skipped in the safety specification verification.

[0041] Figure 3 and Figure 4An embodiment according to the present application shows power density distribution diagrams on different selected surfaces S5 and S2. As described above, in an embodiment of the present application, the method for verifying the safety specification of a mobile device further includes: obtaining another power density design target profile on another selected surface at a predetermined distance from the antenna module (or the mobile device); obtaining another distance sensing plane coverage of the distance sensor on another selected surface at a predetermined distance from the antenna module (or the mobile device, or the distance sensor); comparing the another distance sensing plane coverage on the another selected surface with the another power density design target profile; determining another transmission power upper limit according to the comparison result; and selecting the minimum value from the transmission power upper limit and the another transmission power upper limit as the final transmission power upper limit. The details of these steps are described below.

[0042] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 . In Figure 1 , the antenna module 120 radiates to the surface S5, while the antenna module 120 hardly radiates to the surface S2. In some embodiments, when the surface S5 is selected for safety specification verification, the trigger distance "X" is determined to be, for example but not limited to, 5 cm; and the first transmission power in step S200 is temporarily set to 11.8 dBm.

[0043] Figure 3 It also shows the power density design target profile 310 on the selected surface S5. After performing the safety specification verification process shown in Figure 2 on the selected surface S5, the transmission power upper limit is marked as Plimit("X")_S5. Since the distance sensing plane coverage (not shown) surrounds the power density design target profile 310, Plimit("X")_S5 = 11.8 dBm (equal to the first transmission power). In some embodiments, the distance sensing plane coverage of the P-sensor is affected by the shape of the antenna module 120. In some embodiments, the shape of the distance sensing plane coverage is similar to the shape of the power density design target profile 310.

[0044] In some embodiments, as in the embodiment shown in Figure 3 , it is assumed that the distance sensing plane coverage (not shown) surrounds the power density design target profile 310. When the surface S2 is selected for safety specification verification, the trigger distance "X" is determined to be, for example but not limited to, 5 cm; and another first transmission power in step S200 is temporarily set to 11.8 dBm.

[0045] Figure 4Also shown is a power density design target profile 410 on the selected surface S2. During safety specification verification, the distance sensing plane coverage of the P-sensor on the selected surface S2 is 0 mm 2 , because the antenna module 120 is not facing the selected surface S2. When the other first transmission power of the antenna module 120 is adjusted to 7.5 dBm, the power density design target area is 0 mm 2 , and correspondingly (i.e., in order to obtain a smaller power density design target area), the distance sensing plane coverage of the P-sensor is around the power density design target profile (after the other first transmission power of the antenna module 120 is adjusted to 7.5 dBm). In some embodiments, the distance sensing plane coverage of the P-sensor is 0 mm 2 , and the power density design target area is 0 mm 2 , since the two areas are equal, the distance sensing plane coverage is around the power density design target profile. Then, the other transmission power upper limit is determined to be 7.5 dBm. Therefore, after performing the safety specification verification process shown Figure 2 on the selected surface S2, the transmission power upper limit is marked as Plimit(“X”)_S2. Plimit(“X”)_S2 = 7.5 dBm. In some embodiments, when the area of the power density design target profile is equal to the area of the distance sensing plane coverage on the selected surface, it can be considered that the distance sensing plane coverage is around the power density design target profile. Therefore, the final transmission power upper limit Plimit(“X”) of the antenna module 120 is determined to be the minimum value among the respective transmission power upper limits corresponding to the selected surfaces. That is, in the above case, the transmission power upper limit Plimit(“X”) of the antenna module 120 is the smaller value (7.5 dBm) between Plimit(“X”)_S5 (= 11.8 dBm) and Plimit(“X”)_S2 = (7.5 dBm).

[0046] In an embodiment of the present application, in order to obtain more benefits from an antenna module (or P-sensor) with distance sensing characteristics, the distance sensing plane coverage of the antenna module (or P-sensor) needs to be improved. Figure 5Shows the structure of an antenna module according to another embodiment of the present application. The antenna module 500 is, for example but not limited to, a millimeter wave (mmW) module. The antenna module 500 includes a plurality of metal surfaces 510, 520 and a plurality of connection elements 530 for connecting between the metal surfaces 510 and 520. The metal surfaces 510, 520 can be used to improve the distance sensing plane coverage of the antenna module 500 as compared to an antenna module 120 having a single metal surface (i.e., a single sensing surface). Each of the metal surfaces 510, 520 can be only an antenna, only a metal sensing pad, or both an antenna and a metal sensing pad, and is not limited to the millimeter wave band. Of course, at least one of the metal surfaces 510, 520 must be an antenna and / or a metal sensing pad. In one embodiment of the present application, the connection element 530 for connecting between the metal surfaces 510 and 520 may be optional; when the antenna module 500 does not include any connection elements 530, the metal surfaces 510 and 520 are formed on the surface of the electronic mobile device. In other possible embodiments of the present application, the antenna module 500 may include two, three or four metal surfaces, still within the spirit and scope of the present application. In other words, the antenna module 500 includes at least two metal surfaces. Additionally, in other possible embodiments of the present application, the crossing angle between the metal surfaces of the antenna module 500 can be any angle, if needed, still within the spirit and scope of the present application.

[0047] Figure 6 Shows an electronic mobile device 600 according to an embodiment of the present application. An electronic mobile device 600 according to an embodiment of the present application includes an antenna module 500 and other elements (not shown). In Figure 6 it, the antenna module 500 radiates to the S5 and S2 surfaces.

[0048] Similarly, when the S5 and S2 surfaces are selected for security specification verification, as Figure 2 shown, the possible transmission power upper limits Plimit(“X”)_S5 and Plimit(“X”)_S2 may both be 11.8 dBm (11.8 dBm is an example, Plimit(“X”) can be other values). Therefore, the final transmission power upper limit Plimit(“X”) of the antenna module 500 is determined according to the minimum value among the respective transmission power upper limits corresponding to the selected surfaces. That is, in the above case, the transmission power upper limit Plimit(“X”) of the antenna module 500 is the smaller value (11.8 dBm) of Plimit(“X”)_S5 (=11.8 dBm) and Plimit(“X”)_S2 = (11.8 dBm). The transmission power upper limit is increased.

[0049] Figure 7Disclosed is a method for determining the transmission power upper limit of an antenna module or an electronic device (or a mobile device) according to an embodiment of the present application. In step S700, the first transmission power of the antenna module at the trigger distance of the distance sensor is measured.

[0050] In step S702, on a selected surface at a predetermined distance from the antenna module (or the mobile device), a power density design target profile is obtained based on the first transmission power.

[0051] In step S704, on a selected surface at a predetermined distance from the antenna module (or the mobile device), the distance sensing plane coverage range of the distance sensor is obtained.

[0052] In step S706, it is compared whether the distance sensing plane coverage range surrounds the power density design target profile, and the transmission power upper limit is determined according to the comparison result.

[0053] When the distance sensing plane coverage range fails to surround the power density design target profile (No in step S706), in step S708, the first transmission power is adjusted to the second transmission power until the distance sensing plane coverage range surrounds the power density design target profile, and the transmission power upper limit is determined according to the second transmission power. For example, the transmission power upper limit is determined to be equal to the second transmission power. The step of adjusting the first transmission power in step S708 includes: directly reducing the first transmission power or reducing the trigger distance to reduce the first transmission power.

[0054] When the distance sensing plane coverage range surrounds the power density design target profile (Yes in step S706), in step S710, the transmission power upper limit is determined according to the first transmission power. For example, the transmission power upper limit is determined to be equal to the first transmission power.

[0055] In Figure 7 , the trigger distance of the distance sensor is a predetermined distance; or the trigger distance is determined according to the distance characteristics of the distance sensor.

[0056] In Figure 7 , the distance sensor is integrated in the antenna module, or the distance sensor is externally disposed outside the antenna module and adjacent to the antenna module.

[0057] Figure 7The method further includes: obtaining another power density design target profile on another selected surface at a predetermined distance from the antenna module (or the mobile device); obtaining another distance sensing plane coverage of the distance sensor on another selected surface at a predetermined distance from the antenna module (or the mobile device); comparing the another distance sensing plane coverage and the another power density design target profile on the another selected surface; determining another transmission power upper limit according to the comparison result; and selecting the minimum value from the transmission power upper limit and the another transmission power upper limit as the final transmission power upper limit.

[0058] In Figure 7 the method, when the antenna is at the first transmission power, the power density obtained on the plane of the trigger distance is less than or equal to the power density design target.

[0059] In Figure 7 the method, the power density design target profile is a profile including multiple points equal to the power density design target on the selected surface.

[0060] In Figure 7 the method, the distance sensing plane coverage of the distance sensor is a closed shape, which is obtained by mapping the distance sensing features of the distance sensor to the selected surface at a predetermined distance from the antenna module (or the mobile device).

[0061] Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 also apply to Figure 7 .

[0062] Therefore, in an embodiment of the present application, since the antenna module has multiple metal surfaces, the antenna module with distance sensing features has a wider distance sensing plane coverage, thereby increasing the transmission power upper limit. When the transmission power upper limit increases, the transmission efficiency is improved.

[0063] An embodiment of the present application focuses on the application of millimeter wave frequencies in handheld devices. The size range of the antenna elements is between (λ / 4) and (λ / 2), where "λ" represents the wavelength of the millimeter wave signal. When forming an antenna array, the individual antenna elements are usually magnified by a multiple of the antenna element size, usually not exceeding 10 times.

[0064] An embodiment of the present application introduces a safety specification verification program for the antenna module with distance sensing features, which can be used for the safety verification of the millimeter wave antenna module. In addition, an embodiment of the present application ensures that during the product development stage, performance evaluation and optimization can be carried out according to the safety specification verification program.

[0065] Although the present invention has been described by way of example and in terms of the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and similar arrangements (as would be apparent to those skilled in the art). Accordingly, the scope of the appended claims should be given the broadest interpretation so as to cover all such modifications and similar arrangements.

Claims

1. A security specification verification method for a mobile device, characterized in that: The mobile device includes an antenna module, and the safety specification verification method includes: measuring a first transmission work of the antenna module at a triggering distance of a distance sensor of the mobile device; acquiring a power density design target profile based on the first transmit power on a selected surface at a predetermined distance from the mobile device; acquiring a distance sensing plane coverage of the distance sensor on the selected surface at a predetermined distance from the mobile device; comparing whether the distance sensing plane coverage is around the power density design target contour; and When the distance sensing plane coverage of the distance sensor fails to surround the power density design target contour, the first transmission power is adjusted to a second transmission power until the distance sensing plane coverage surrounds the power density design target contour.

2. The method according to claim 1, characterized in that After the step of adjusting the first transmission power to the second transmission power, determining a transmission power upper limit according to the second transmission power, and When the distance sensing plane coverage range surrounds the power density design target contour, the transmission power upper limit is determined according to the first transmission power.

3. The method according to claim 2, characterized in that The step of adjusting the first transmission power comprises: The first transmission power is directly reduced or the triggering distance is reduced to reduce the first transmission power.

4. The method according to claim 2, characterized in that: The transmission power upper limit is determined to be equal to the first transmission power or the second transmission power.

5. The method according to claim 1, characterized in that The distance sensor is integrated into the antenna module, or the distance sensor is externally disposed on the antenna module and adjacent to the antenna module.

6. The method according to claim 2, characterized in that Further including: acquiring another power density design target profile on another selected surface at the predetermined distance from the mobile device; acquiring another distance sensing plane coverage of the distance sensor on the another selected surface at a predetermined distance from the mobile device; comparing the another distance sensing plane coverage to the another power density design target profile on the another selected surface; determining another transmission power upper limit according to the comparison result; as well as The minimum value is selected from the transmission power upper limit and the another transmission power upper limit as a final transmission power upper limit.

7. The method according to claim 1, characterized in that When the antenna is at the first transmission power, the maximum power density obtained on the plane of the trigger distance is less than or equal to the power density design target.

8. The method according to claim 1, characterized in that The power density design target profile is a profile that includes a plurality of points on the selected surface that are equal to the power density design target.

9. The method according to claim 1, characterized in that: The distance sensing plane coverage of the distance sensor is a closed shape obtained by mapping the distance sensing features of the distance sensor onto the selected surface at the predetermined distance from the mobile device.

10. A method for determining an upper limit of transmission power of a mobile device, characterized in that: The mobile device includes an antenna module, and the method includes: measuring a first transmission power of the antenna module at a triggering distance of a distance sensor of the mobile device; obtaining a power density design target profile based on the first transmission power on a selected surface at a predetermined distance from the mobile device; acquiring a distance sensing plane coverage of the distance sensor on the selected surface at a predetermined distance from the mobile device; comparing the distance sensing plane coverage to the power density design target profile on the selected surface; The transmission power upper limit is determined according to the comparison result.

11. The method according to claim 10, characterized in that The step of comparing the distance sensing plane coverage and the power density design target profile on the selected surface comprises: Compare whether the distance sensing plane coverage area surrounds the power density design target contour.

12. The method according to claim 11, characterized in that When the distance sensing plane coverage fails to surround the power density design target contour, adjusting the first transmission power to a second transmission power until the distance sensing plane coverage surrounds the power density design target contour, and determining the transmission power upper limit according to the second transmission power; and When the distance sensing plane coverage range surrounds the power density design target contour, the transmission power upper limit is determined according to the first transmission power.

13. The method according to claim 12, characterized in that The step of adjusting the first transmission power comprises: The first transmission power is directly reduced or the triggering distance is reduced to reduce the first transmission power.

14. The method according to claim 10, characterized in that The trigger distance of the distance sensor is a predetermined distance; or the trigger distance is determined according to a distance characteristic of the distance sensor.

15. The method according to claim 10, characterized in that The distance sensor is integrated into the antenna module, or the distance sensor is externally disposed on the antenna module and adjacent to the antenna module.

16. The method according to claim 10, characterized in that Further including: acquiring another power density design target profile on another selected surface at a predetermined distance from the mobile device; acquiring another distance sensing plane coverage of the distance sensor on the another selected surface at the predetermined distance from the mobile device; comparing the another distance sensing plane coverage to the another power density design target profile on the another selected surface; determining another transmission power upper limit according to the comparison result; as well as The minimum value is selected from the transmission power upper limit and another transmission power upper limit as a final transmission power upper limit.

17. The method according to claim 10, characterized in that When the antenna is at the first transmission power, a power density obtained on the plane of the trigger distance is less than or equal to a power density design target.

18. The method according to claim 12, characterized in that The power density design target profile is a profile that includes a plurality of points on the selected surface that are equal to the power density design target.

19. The method according to claim 12, characterized in that The distance sensing planar coverage of the distance sensor is a closed shape obtained by mapping the distance sensing features of the distance sensor onto the selected surface at the predetermined distance from the mobile device.

20. A method for determining an upper limit of a transmission power of an antenna module, characterized in that: The method includes: At a trigger distance of the distance sensor, measuring a first transmission power of the antenna module; On a selected surface at a predetermined distance from the antenna module, obtaining a power density design target profile based on the first transmit power; acquiring a distance sensing plane coverage of the distance sensor on the selected surface at a predetermined distance from the antenna module; on the selected surface, comparing the distance sensing plane coverage to the power density design target profile; as well as The transmit power upper limit is determined according to the comparison result.

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