CN108777744A - The regulation and control method, device and mobile terminal of antenna radiation performance - Google Patents
The regulation and control method, device and mobile terminal of antenna radiation performance Download PDFInfo
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- CN108777744A CN108777744A CN201810528342.9A CN201810528342A CN108777744A CN 108777744 A CN108777744 A CN 108777744A CN 201810528342 A CN201810528342 A CN 201810528342A CN 108777744 A CN108777744 A CN 108777744A
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- property feature
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
- H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
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- 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
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The present invention provides a kind of regulation and control method, device and mobile terminal of antenna radiation performance, are related to field of communication technology, and this method is applied to mobile terminal, and the above method includes：Detect the electrical property feature of the aerial signal of mobile terminal；Aerial signal includes the transmitting signal for being sent to antenna side and/or the reflection signal from antenna side；Judge whether the electrical property feature detected matches with the electrical property feature to prestore, wherein the electrical property feature to prestore is the electrical property feature of aerial signal when human body is close；If it does, reducing the radiant power of current transmitting antenna according to preset back-off SAR standards.Whether the present invention in the antenna for judging mobile terminal having human body close to by way of antenna, and then the radiant power of antenna is reduced according to preset back-off SAR standards, avoid human body close to the excessive influence generated to human body of the radiant power of antenna, the communication performance for contributing to promotion mobile terminal simultaneously, improves user experience.
Description
Technical field
The present invention relates to mobile communication technology fields, more particularly, to a kind of regulation and control method, apparatus of antenna radiation performance
And mobile terminal.
Background technology
With the fast development of development of Mobile Internet technology and intelligent terminal technology, mobile terminal is more and more universal, also, with
The function of mobile terminal is stronger and stronger, and transmission power is also increasingly stronger, causes to produce radiation effect to human body.
The radiation effect that mobile terminal generates usually uses SAR (Specific Absorption Rate, electro-magnetic wave absorption ratio
Value or specific absorption rate) value weighs, and by taking mobile phone radiation as an example, SAR value refers to radiating by the ratio of the soft tissue absorbed on head,
SAR value is lower, and the amount that radiation is absorbed by brain is fewer, and therefore, SAR value can indicate mobile terminal can cause how many to human body
It influences, numerical value is bigger, indicates that the influence to human body is bigger；It is on the contrary then influence smaller.
In general, mobile terminal is in use, with the variation of network environment and use environment, in order to obtain preferably
Transmission performance, it is possible that the situation that SAR value is excessive.If SAR value is excessive, the larger of human body radiation may be influenced to make
The health of user.
Invention content
In view of this, the purpose of the present invention is to provide a kind of regulation and control method, apparatus of antenna radiation performance and movement are whole
End improves influence of the mobile terminal use in the process to the health of human body.
In a first aspect, an embodiment of the present invention provides a kind of regulation and control method of antenna radiation performance, this method is applied to move
Dynamic terminal, including：
Detect the electrical property feature of the aerial signal of mobile terminal；Aerial signal include be sent to antenna side transmitting signal and/
Or the reflection signal from antenna side；Judge whether the electrical property feature detected matches with the electrical property feature to prestore, wherein prestore
Electrical property feature be human body it is close when aerial signal electrical property feature；If it does, according to preset back-off SAR standards
Reduce the radiant power of current transmitting antenna.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiments of first aspect, wherein on
The step of stating the electrical property feature of the aerial signal of detection mobile terminal, including：Receive the antenna bidirectional coupler sense of mobile terminal
The aerial signal of survey；Analog-to-digital conversion process is carried out to aerial signal；Aerial signal is calculated according to the aerial signal of digital form
Electrical property feature, electrical property feature include changed power feature or impedance variations feature.
The possible embodiment of with reference to first aspect the first, an embodiment of the present invention provides second of first aspect
Possible embodiment, wherein the step of whether electrical property feature that above-mentioned judgement detects matches with the electrical property feature to prestore, packet
It includes：If the electrical property feature detected includes changed power feature, current power interval is determined according to changed power feature；Such as
Fruit power interval fall within the human body to prestore it is close when power bracket in, the electrical property feature confirmly detected and the electrical spy to prestore
Sign matching.
The possible embodiment of with reference to first aspect the first, an embodiment of the present invention provides the third of first aspect
Possible embodiment, wherein the step of whether electrical property feature that above-mentioned judgement detects matches with the electrical property feature to prestore, packet
It includes：If the electrical property feature detected includes impedance variations feature, current impedance section is determined according to impedance variations feature；Such as
Fruit impedance section fall within the human body to prestore it is close when impedance ranges in, the electrical property feature confirmly detected and the electrical spy to prestore
Sign matching.
With reference to first aspect, an embodiment of the present invention provides the 4th kind of possible embodiments of first aspect, wherein on
The step of reducing the radiant power of current transmitting antenna according to preset back-off SAR standards is stated, including：The electricity that will be detected
Property feature and the human body that prestores carry out matching operation apart from electrical property feature, wherein human body includes at least two apart from electrical property feature
Electrical property feature apart from the corresponding aerial signal in section；According to matching result determine belonging to current human apart from section；
According to the radiant power for reducing current transmitting antenna apart from the corresponding back-off SAR standards in section belonging to current human.
With reference to first aspect, an embodiment of the present invention provides the 5th kind of possible embodiments of first aspect, wherein on
The step of reducing the radiant power of current transmitting antenna according to preset back-off SAR standards is stated, including：In preset duration
It is interior, the radiant power of current transmitting antenna is reduced according to the decline gear in preset back-off SAR standards.
With reference to first aspect, an embodiment of the present invention provides the 6th kind of possible embodiments of first aspect, wherein on
The method of stating further includes：If the electrical property feature detected and the electrical property feature to prestore mismatch, the spoke of current transmitting antenna is detected
Penetrate power whether less than it is preset wait for pitch limit；If so, raising the radiant power of current transmitting antenna.
With reference to first aspect, an embodiment of the present invention provides the 7th kind of possible embodiments of first aspect, wherein on
The method of stating further includes：If mobile terminal opens what human body detected under scene mode of learning, the current close distance of record
The electrical property feature of aerial signal；Scene learning data is generated, scene learning data includes：Type identification, the human body of mobile terminal
Close to the range marker and electrical property feature of scene；Scene learning data is sent to the Cloud Server of mobile terminal, so that cloud service
Device carries out big data analysis according to the scene learning data received, generates power corresponding with type identification and range marker and returns
Move back SAR standards.
Second aspect, the embodiment of the present invention also provide a kind of regulation device of antenna radiation performance, which is set to shifting
Dynamic terminal, including：Detection module, the electrical property feature of the aerial signal for detecting mobile terminal；Aerial signal includes being sent to day
The transmitting signal of line side and/or the reflection signal from antenna side；Judgment module, electrical property feature for judging to detect with it is pre-
Whether the electrical property feature deposited matches, wherein the electrical property feature to prestore is the electrical property feature of aerial signal when human body is close；Processing
Module, for if it does, reducing the radiant power of current transmitting antenna according to preset back-off SAR standards.
In conjunction with second aspect, an embodiment of the present invention provides the first possible embodiments of second aspect, wherein on
Detection module is stated to be used for：Receive the aerial signal of the antenna bidirectional coupler sensing of mobile terminal；By radio-frequency front-end to antenna
Signal carries out analog-to-digital conversion process；The electrical property feature of aerial signal, electrical property feature packet are calculated according to the aerial signal of digital form
Include changed power feature or impedance variations feature.
In conjunction with second aspect, an embodiment of the present invention provides second of possible embodiments of second aspect, wherein on
Stating device further includes：Study module, if opening human body close to scene mode of learning for mobile terminal, record currently close to away from
The electrical property feature of the aerial signal detected under；Scene learning data is generated, scene learning data includes：The class of mobile terminal
Type mark, human body close to scene range marker and electrical property feature；Send scene learning data to mobile terminal Cloud Server,
So that Cloud Server carries out big data analysis according to the scene learning data received, generate and type identification and range marker pair
The back-off SAR standards answered.
The third aspect, an embodiment of the present invention provides a kind of mobile terminal, which has above-mentioned second aspect
The regulation device of the antenna radiation performance.
The embodiment of the present invention brings following advantageous effect：
The regulation and control method, device and mobile terminal of antenna radiation performance provided in an embodiment of the present invention, can detect movement
The electrical property feature of the aerial signal of terminal；And judge whether the electrical property feature detected matches with the electrical property feature to prestore, wherein
The electrical property feature to prestore is the electrical property feature of aerial signal when human body is close；If it does, being returned in turn according to preset power
Moving back SAR standards reduces the radiant power of current transmitting antenna.There can be human body close to day on the basis of ensureing transmission performance
When line, the radiant power of antenna, and then the influence during mobile terminal use to the health of human body are reduced, improves user's
Experience Degree.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and is obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those skilled in the art, without creative efforts,
Other drawings may also be obtained based on these drawings.
Fig. 1 is that a kind of signal of antenna system provided in an embodiment of the present invention moves towards schematic diagram；
Fig. 2 is a kind of flow chart of the regulation and control method of antenna radiation performance provided in an embodiment of the present invention；
Fig. 3 is a kind of Smith chart of impedance variations feature provided in an embodiment of the present invention；
Fig. 4 is the flow chart of the regulation and control method of another antenna radiation performance provided in an embodiment of the present invention；
Fig. 5 is a kind of workflow schematic diagram of mobile terminal provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of the regulation device of antenna radiation performance provided in an embodiment of the present invention.
Fig. 7 is a kind of schematic diagram of mobile terminal provided in an embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those skilled in the art institute without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Usually in the mobile terminal design stage, SAR value is mainly reduced by two ways, one is by improving antenna
Material or stick on the modes such as wave absorbing patch near antenna to reduce the SAR of mobile terminal, this mode increase it is mobile eventually
The device cost at end, and suction wave material or wave absorbing patch are easily damaged and lead to lose its function, and stability is poor.Another kind is
Radio frequency is realized by increasing SAR (specific absorption rate, Specific Absorption Ratio) sensors in antenna to radio-frequency head
Back-off reduces SAR value, and whether SAR sensors are changed by antenna induction perimeter capacitance, and then determines whether human body approaches
Electronic equipment.But this mode has used excessive sensor to detect human body at a distance from mobile terminal, also in certain journey
The cost of hardware is increased on degree, at the same time, on the mobile terminal of the current confined space, also brings the pressure of device stack
Power.Based on this, an embodiment of the present invention provides a kind of regulation and control method, device and mobile terminal of antenna radiation performance, can not
On the basis of increasing cost, antenna radiation performance is regulated and controled, to improve mobile terminal radiation effect caused by human body.
For ease of understanding the present embodiment, first to a kind of antenna radiation performance disclosed in the embodiment of the present invention
Regulation and control method describes in detail.
The regulation and control method of antenna radiation performance provided in an embodiment of the present invention can be applied to mobile terminal, specific implementation
When, which includes antenna system as shown in Figure 1, and entire antenna system includes digital processing element, antenna and two-way
Coupler, meanwhile, digital processing element may include digital processing unit, analog-digital converter and radio-frequency front-end for convenience of description,
Wherein, digital processing element can be base-band digital processing unit, and the DSP (numbers of high-speed parallel may be used in digital processing unit
Signal processing, Digital Signal Processing) chip；Bidirectional coupler can be high according to actual use demand selection
The bidirectional coupler of precision so as to real-time induction antenna signal, and feeds back to digital processing unit.
Signal based on antenna system shown in FIG. 1 moves towards schematic diagram, and bidirectional coupler can believe the transmitting of antenna side
It number (the transmitting signal for being sent to antenna side) and receives signal (the reflection signal from antenna side) and is coupled, wherein shown in Fig. 1
Dotted arrow (1) shown in trend be the process that is coupled to the transmitting signal for being sent to antenna side of bidirectional coupler, dotted line
Trend shown in arrow (2) is the process that bidirectional coupler couples the reflection signal from antenna side, bidirectional coupler
Coupled signal can be sent to digital processing element after generating coupled signal.The side of bidirectional couple is carried out by bidirectional coupler
Formula can alleviate influence of the different antennae scene to aerial signal.
Specifically, signal is issued analog-digital converter, modulus by radio-frequency front-end after bidirectional coupler generation coupled signal
Converter is sent to dsp chip (digital processing unit) after signal is carried out analog-to-digital conversion process, and dsp chip can be believed treated
Number (signal of digital form) carries out that changed power or impedance variations are calculated, and wherein power and impedance can be by coming from
The voltage and current of signal is calculated.
The antenna system generates coupled signal by bidirectional coupler and is sent into radio-frequency front-end, and radio-frequency front-end is by coupled signal
It carries out being down-converted to intermediate frequency, is then digital signal, the number being sent into base band by analog-signal transitions using analog-digital converter
Word processing device, digital processing unit passes through calculating ratio to detecting that human body is close, and triggers human body approach signal, last digital processing
Device is reduced according to preset back-off SAR normal notification radio-frequency front-ends in radio frequency power output to suitable range, avoids spoke
Penetrate the excessive influence caused by human body of power.
Based on above-mentioned mobile terminal, Fig. 2 shows a kind of regulation and control sides of antenna radiation performance provided in an embodiment of the present invention
The flow chart of method, includes the following steps：
Step S202 detects the electrical property feature of the aerial signal of mobile terminal；Aerial signal includes the hair for being sent to antenna side
Penetrate signal and/or the reflection signal from antenna side.
In actual use, the transmitting signal for being sent to antenna side refers to the letter for being emitted by radio-frequency front-end and being transmitted to antenna side
Number, the reflection signal from antenna side refers to the above-mentioned signal for being transmitted to antenna side through the reflected signal of antenna end, is being examined
When surveying electrical property feature, individually both signals can be detected, two kinds of signals can also be detected simultaneously, detected
Process can be realized by coupler (such as bidirectional coupler).By to being sent to the transmitting signal of antenna side and/or coming from day
The reflection signal of line side is coupled, and the electrical property feature of aerial signal can be further calculated out, therefore, above-mentioned steps S202's
Detection process may include：The aerial signal for receiving the antenna bidirectional coupler sensing of mobile terminal, mould is carried out to aerial signal
Number conversion process.The electrical property feature of aerial signal is calculated according to the aerial signal of digital form, electrical property feature includes changed power
Feature or impedance variations feature.
Step S204, judges whether the electrical property feature detected matches with the electrical property feature to prestore；Wherein, what is prestored is electrical
The electrical property feature of aerial signal characterized by human body when close；
Generally, due to different substances, such as human body, metal, wood, cement etc. is caused when close to mobile terminal
The variation of the electrical property feature of aerial signal is different, and influence of the different substances to the electrical property feature of aerial signal has
Uniqueness is prestored in the terminal by the electrical property feature of the aerial signal by human body when close, as judging whether
There is the foundation that human body is close.
It should be pointed out that the above-mentioned electrical property feature to prestore can be preset before mobile terminal manufacture, can also be
It is obtained from Cloud Server in mobile terminal.
If so, executing step S206, if not, when being not detected with human body close to similar electrical property feature, return
Step S202 continues to detect；
Step S206 reduces the radiant power of current transmitting antenna according to preset back-off SAR standards.
In general, back-off SAR standards specified in country variant standard are different, and therefore, preset back-off SAR marks
Accurate limit value requires also difference, may include above-mentioned antenna in usual back-off SAR standards at a distance from human body and day
The correspondence of the radiant power pad value of line and the SAR etc. under current radiation power, specific back-off SAR standards
It can be configured, and be preserved to the designated position of mobile terminal, in order to which digital processing element is adjusted with reference to related data
With.
It should be noted that in view of mobile terminal generally comprise mutiple antennas (Fig. 1 it is merely exemplary show a transmitting
Antenna), bidirectional coupler can be connected with each antenna, and switching switch, the switching are provided between antenna and bidirectional coupler
For switch for being responsible for switching antenna as transmitting antenna, this switching is automatically switched according to the signal-to-noise ratio of the antenna detected
's.Therefore, current transmitting antenna here refers to the antenna coupled with bidirectional coupler, i.e., switching switching is direct and double
The antenna being connected to coupler.
The method of adjustment antenna radiation performance provided in an embodiment of the present invention, by the aerial signal for detecting mobile terminal
Electrical property feature, and judge whether the electrical property feature that detects matches with the electrical property feature to prestore, wherein the electrical property feature to prestore is
The electrical property feature of aerial signal when human body is close；If it does, being reduced in turn according to preset back-off SAR standards current
The radiant power of transmitting antenna.Therefore, technical solution provided in an embodiment of the present invention, can be on the basis for ensureing transmission performance
On, when there is human body close to antenna, the radiant power of antenna is reduced, and then to the health of human body during mobile terminal use
It influences, improves the Experience Degree of user.
Electrical property feature in the present embodiment may include changed power feature or impedance variations feature, wherein changed power or
Impedance variations are a value ranges.Therefore, above-mentioned steps S204 can be realized by following two modes, mode (1)：If inspection
The electrical property feature measured includes changed power feature, and current power interval is determined according to changed power feature；If power area
Between fall within the human body to prestore it is close when power bracket in, the electrical property feature confirmly detected is matched with the electrical property feature to prestore.
Mode (2)：If the electrical property feature detected includes impedance variations feature, current impedance area is determined according to impedance variations feature
Between；If impedance section fall within the human body to prestore it is close when impedance ranges in, the electrical property feature that confirmly detects and prestore
Electrical property feature matches.
It is briefly described by taking impedance variations feature as an example below, in order to make it easy to understand, Fig. 3 shows a kind of impedance variations
The Smith chart of feature, it is shown that different time impedance variations indicate the whether close detection logic of human body, and the figure shows work as
When human body moves closer to, movement track of the impedance variations on smith chart (Smith chart) has uniqueness on antenna,
It can define with the vector of the impedance variations on different frequency indicated by an arrow and change presented vector locus per 10ms with only
One property.
When specific implementation, human body can cause antenna power on signal to change close to antenna, and change in electric is converted into resistance
Anti- change information is as shown in Figure 3.Solid line is antenna power on signal situation under free space in Fig. 3, and dotted line is when human body is close to extremely
Impedance variations situation when 5mm, this situation only when human body close to when just will present the curve, other are such as metal, wood, cement
Deng the curve of presentation has larger difference, it is ensured that its uniqueness.
In general, the influence of different power or impedance to human body radiation is related to the degree of human body close to antenna, therefore,
When the electrical property feature detected is matched with the electrical property feature to prestore, illustrate that human body has been approached antenna, can be emitted by reducing
The mode of antenna radiated power reduces radiation of the antenna to human body, is based on this, above-mentioned steps S206 is executed by following steps：?
In preset duration, the radiant power of current transmitting antenna is reduced according to the decline gear in preset back-off SAR standards.It examines
Consider reduce radiant power with the time be it is associated, i.e., radiant power need not be also impossible in time it is uninterrupted under
Drop, while may be to the influence of the antenna performance of mobile terminal in order to reduce reduction power, and avoid consuming excessive electricity
Problem defines preset duration here.In general, above-mentioned decline gear is multiple, the radiation to current transmitting antenna can be realized
The multistage of power is adjusted.
It considers how accurately to reduce antenna radiated power, while antenna performance being made to reach preferable state, this hair again
Bright embodiment provides the regulation and control method of another antenna radiation performance, and with reference to Fig. 4, this method includes：
Step S402 detects the electrical property feature of the aerial signal of mobile terminal；
Mobile terminal radiant power when bright screen can increase, in order to save electric energy, therefore can when screen is lighted,
Such as user unlocks, sends a telegram here, removes electricity, sends under the application scenarios such as short message, starts the electrical of the aerial signal of detection mobile terminal
The step of feature.
Certainly, SAR rollback testing mechanism controls can also be arranged in user in the terminal, moved with this to start detection
The step of electrical property feature of the aerial signal of terminal.
In specific implementation, step S402 includes the following steps：
(1) aerial signal of the antenna bidirectional coupler sensing of mobile terminal is received.
In general, under different scenes, the signal strength of aerial signal is different, and couples the coupled signal generated later
Therefore difference can perceive the variation of aerial signal, with reality in such a way that bidirectional coupler couples aerial signal
The process that aerial signal is monitored under existing different scenes.
(2) analog-to-digital conversion process is carried out to aerial signal.
Analog-to-digital conversion process is carried out to aerial signal by analog-digital converter, generates the aerial signal of digital form, number
The aerial signal of form includes voltage and current.
(3) electrical property feature of aerial signal is calculated according to the aerial signal of digital form, electrical property feature includes changed power
Feature or impedance variations feature.
Power wherein in changed power feature can be multiplied by electric current by the voltage of aerial signal and obtain；Impedance variations are special
Impedance in sign can be obtained by voltage in aerial signal divided by electric current.
Step S404, judges whether the electrical property feature detected matches with the electrical property feature to prestore；Wherein, what is prestored is electrical
The electrical property feature of aerial signal characterized by human body when close；If so, thening follow the steps S406；If if not, detecting
To the electrical property feature and the electrical property feature that prestores mismatch, then follow the steps 412.
The electrical property feature detected and the human body to prestore are carried out matching operation by step S406 apart from electrical property feature；
Wherein, above-mentioned human body includes at least two electricity apart from the corresponding aerial signal in section apart from electrical property feature
Property feature.Such as apart from section (0,5), indicate that distance is less than the electrical property feature of the corresponding aerial signals of 5mm, apart from section [5,
10), indicate that distance is more than the electrical property feature that 5mm is less than the corresponding aerial signals of 10mm.
In general, the above-mentioned human body to prestore is that mobile terminal manufacture is preceding preset apart from electrical property feature；And/or human body distance
Electrical property feature is what mobile terminal was obtained from Cloud Server.
In specific implementation, above-mentioned human body can be obtained apart from electrical property feature in such a way that mobile terminal machine learns
It arrives.In other words, under specified study scene, human body distance can be generated electrically by carrying out machine training to mobile terminal
Feature.When specific implementation, in study scene of the human body close to distance, human body is needed to coordinate pre-determined distance range, i.e. human body
Cooperation in section, makes mobile terminal (such as mobile phone) learn the electrical spy of this aerial signal under section preset
Sign, transformed distances section, the electrical property feature for the aerial signal for keeping machine learning next under section.It is multiple not by cooperation
Same pre-determined distance range obtains multiple electrical property features apart from the corresponding aerial signal in section, and it is electrically special to generate human body distance
Sign is further marked by the electrical property feature of the aerial signal under server analysis and the current study scene of storage with back-off SAR
Accurate correspondence；In actual use, if the electricity of the electrical property feature of current antenna signal and the aerial signal learnt before
Property characteristic matching, it will be able to acquire current human apart from mobile terminal apart from section, and then according to apart from section pair
The back-off SAR standard startup power fallback mechanisms answered reduce the radiant power of antenna.
Step S408, according to matching result determine belonging to current human apart from section.
Step S410, according to belonging to current human, apart from section, corresponding back-off SAR standards reduce current transmitting
The radiant power of antenna.
The statistics and analysis that above-mentioned preset back-off SAR standards can carry out big data by cloud server is handled
It generates, and preset back-off SAR standards are associated with the model of mobile terminal.
When specific implementation, mobile terminal can carry out machine learning, study scene packet here to different study scenes
It includes：The electrical property feature of aerial signal when the different objects such as human body, metal material, plastic material, liquid are close, and/or, it is different
Electrical property feature of the object proximity apart from section internal antenna signal；The data of study can be sent to cloud service by mobile terminal
Device, the statistics and analysis that big data is carried out by cloud server is handled, and then generates back-off SAR standards.
Step S412, detect current transmitting antenna radiant power whether less than it is preset wait for pitch limit.If it is, holding
Row step S414；If not, thening follow the steps S416；
Here preset waits for that pitch limit can be the standard value of setting, which can ensure base to a certain extent
This antenna transmission performance, but be also not up to the optimum value of antenna transmission performance, if without human body close to mobile terminal, it can be with
The radiant power for continuing up-regulation transmitting antenna, to promote the transmission performance of antenna.
Step S414 raises the radiant power of current transmitting antenna.
Step S416 keeps the radiant power of current transmitting antenna.
It considers how to be updated human body apart from electrical property feature, further, this method can also include study step
Suddenly, in the specific implementation, which mainly includes the following steps that：
(1) it if the mobile terminal opens human body close to scene mode of learning, records and is currently detected close under distance
Aerial signal electrical property feature.
Specifically, scene mode of learning control can be configured in the function menu of mobile terminal, wherein scene learns mould
Formula control includes pre-set scene identity and scene operation prompt message；User is carrying out scene study using mobile terminal
When, corresponding scene identity can be selected, to learn to corresponding scene, if scene identity is selected, mobile terminal
The corresponding scene mode of learning of scene identity can be opened.
User can also pre-set a learning cycle, when the run time of mobile terminal reaches learning cycle
When duration, mobile terminal, which may remind the user that, opens scene mode of learning, carries out the study of given scenario.
It is that human body illustrates for antenna scene by above-mentioned antenna field scape, mobile terminal opens scene mode of learning
Afterwards, user can show the antenna scene that can be currently learnt by the human-computer interaction interface of mobile terminal, user's selection and
Human body after antenna scene, mobile terminal can continue to prompt it is close apart from section, as head distance antenna [10,15),
[20,25) etc., mobile terminal can also prompt close mode, such as hold aerial position or palm close to aerial position etc.,
At this point, the aerial signal of antenna system will change, the electrical property feature of the aerial signal that mobile terminal detects is also therewith
Variation, mobile terminal can continue to record and preserve the variation characteristic of the electrical property feature.
In order to increase the general applicability of scene mode of learning, during actual learning, mobile terminal can be to current
Scene is repeatedly learnt, and the electrical spy of the aerial signal detected under current scene is counted and recorded by the way of statistics
Sign.
For other foreign objects close to antenna scene, such as liquid is close, metal material is close, and traversal switching may be used
Mode learns the electrical property feature under different scenes, and stores into the specified register of mobile terminal, in order to generate scene
Practise data.
In actual use, user can be by selecting the human body on mobile terminal close to the button of scene mode of learning
Mode opens mode of learning instruction, opens human body close to scene mode of learning.
(2) scene learning data is generated.
Wherein, which includes：The type identification (such as model) of mobile terminal, human body close to scene away from
From mark and electrical property feature.Above-mentioned electrical property feature be with the type identification of mobile terminal, human body close to scene range marker
It is corresponding.
(3) scene learning data is sent to the Cloud Server of mobile terminal, so that Cloud Server is according to the scene received
Learning data carries out big data analysis, generates back-off SAR standards corresponding with type identification and range marker.
When specific implementation, mobile terminal it is close apart from section can to send human body under the operation of user to Cloud Server
And/or the update request of back-off SAR standards, at this point, the back-off SAR criterion numerals that Cloud Server can will be newly generated
It is sent to mobile terminal according to packet, mobile terminal is made to be updated；Cloud Server can also be returned periodically to mobile terminal transmission power
The update prompt for moving back SAR standards, to prompt user to be downloaded and update, user can choose whether according to actual use situation
Back-off SAR standards are updated, in order to which mobile terminal is under non-scene mode of learning, encounter the antenna field again
Jing Shi can quickly find corresponding back-off SAR standards, reduce and optimize the radiance of antenna.
The regulation and control method of antenna radiation performance provided in an embodiment of the present invention, by the aerial signal for detecting mobile terminal
Electrical property feature；Then judge the aerial signal when electrical property feature detected and the human body to prestore are close electrical property feature whether
Match, if it does, then reducing the radiant power of current transmitting antenna according to preset back-off SAR standards, human body is avoided to connect
The excessive influence generated to human body of radiant power of nearly antenna helps to carry it is also possible to reduce the influence to antenna performance
Rise the communication performance of mobile terminal.In addition, technical solution provided in an embodiment of the present invention does not need to additionally increase SAR sensors
Power is reduced, in the case where not increasing any cost, can also realize the dynamic adjustment of mobile terminal antenna performance,
Influence of the aerial radiation to human body is reduced, and then improves the Experience Degree of user.
Understand that the embodiment of the present invention is with mobile terminal for the ease of the regulation and control method to above-mentioned antenna radiation performance
For mobile phone, its workflow is briefly described in conjunction with Fig. 5, is included the following steps：
Step S502, mobile terminal start SAR rollback testing mechanisms；
Step S504, bidirectional coupler detect the variation of antenna power on signal in real time；
Bidirectional coupler detects antenna power on signal variation (electrical property feature) in real time in radio frequency, is transmitted to digital processing list
Member.
Step S506, judging current state, whether someone is close；
Specifically, the change in electric of detection is stored with mobile phone before manufacture by the digital processing unit of digital processing element
The electric signal of calibration human body proximity state carry out whether quick contrast judgement has human body close.
When being, that is, judge human body close to when, then follow the steps S508；When no, that is, it is not detected with human body close to phase
As electric signal when, return to step S504 continues to detect.
Step S508 is determined close to apart from section；
The close rear triggering radio frequency fallback mechanism of human body is judged, in specific implementation, by the change in electric detected and in advance
The human body deposited apart from electric signal carry out matching operation, obtain belonging to current human apart from section, be, for example, less than the distance regions of 5mm
Between.
Step S510, triggering retract with the radio frequency power output apart from section corresponding amount grade.
Mobile terminal (such as mobile phone) provided in an embodiment of the present invention can be by existing hardware (at bidirectional coupler and number
Reason unit) it can realize that radio-frequency power retracts, it does not need to additionally increase SAR sensors or range sensor to reduce work(
Rate, to save cost.
On the basis of the regulation and control method of above-mentioned antenna radiation performance, the embodiment of the present invention additionally provides a kind of aerial radiation
The regulation device of performance, the device are set to mobile terminal, a kind of knot of the regulation device of antenna radiation performance as shown in FIG. 6
The regulation device of structure schematic diagram, the antenna radiation performance includes：
Detection module 60, the electrical property feature of the aerial signal for detecting mobile terminal；Aerial signal includes being sent to antenna
The transmitting signal of side and/or the reflection signal from antenna side.
Judgment module 62, for judging whether the electrical property feature detected matches with the electrical property feature to prestore, wherein prestore
Electrical property feature be human body it is close when aerial signal electrical property feature.
Processing module 64, for if it does, reducing the spoke of current transmitting antenna according to preset back-off SAR standards
Penetrate power.
Specifically, detection module 60 is used for：Receive the aerial signal of the antenna bidirectional coupler sensing of mobile terminal；Pass through
Radio-frequency front-end carries out analog-to-digital conversion process to aerial signal；The electrical spy of aerial signal is calculated according to the aerial signal of digital form
Sign, electrical property feature includes changed power feature or impedance variations feature.
Further, the regulation device of the antenna radiation performance further includes study module 66, and study module 66 is used for：If
Mobile terminal opens human body close to scene mode of learning, records the electrical spy of the aerial signal currently detected close under distance
Sign；Scene learning data is generated, scene learning data includes：The type identification of mobile terminal, human body close to scene distance mark
Knowledge and electrical property feature；Scene learning data is sent to the Cloud Server of mobile terminal, so that Cloud Server is according to the field received
Scape learning data carries out big data analysis, generates back-off SAR standards corresponding with type identification and range marker.
The regulation device of antenna radiation performance provided in an embodiment of the present invention, the aerial radiation provided with above-described embodiment
The regulation and control method technical characteristic having the same of energy reaches identical technique effect so can also solve identical technical problem.
The embodiment of the present invention additionally provides a kind of mobile terminal, which has the tune of above-mentioned antenna radiation performance
Control device.
A kind of schematic diagram of mobile terminal as shown in Figure 7, including radio circuit (radio frequency Radio Frequency, RF electricity
Road) 710, memory 720, input unit 730, display unit 740, sensor 750, voicefrequency circuit 760, Wireless Fidelity
The components such as (wireless fidelity, WiFi) module 770, processor 780 and power supply 790.
For convenience of description, Fig. 7 is illustrated only and the relevant part of the embodiment of the present invention.It should be appreciated that shown in Fig. 7
The structure of mobile terminal does not constitute the restriction to mobile terminal, may include than illustrating more or fewer components or group
Close certain components or different components arrangement.
Each component parts of mobile terminal is specifically introduced with reference to Fig. 7：
RF circuits 710 for receive and send messages or communication process in, signal sends and receivees, particularly, will be under base station
After row information receives, handled to processor 780；Upstream data can also be sent to base station.In general, RF circuits include but unlimited
In antenna, at least one amplifier, transceiver, coupler, low-noise amplifier (Low Noise Amplifier, LNA),
Duplexer etc..
Memory 720 can be used for storing software program and module, such as the antenna radiation performance in the embodiment of the present invention
Regulation and control method and the corresponding program instruction/module of mobile terminal, processor 780 are stored in the soft of memory 720 by operation
Part program and module, to execute various function application and the data processing of mobile terminal, as the embodiment of the present invention provides
Antenna radiation performance regulation and control method.Memory 720 can include mainly storing program area and storage data field, wherein storage
It program area can storage program area, application program (such as sound-playing function, image player function needed at least one function
Deng) etc.；Storage data field can be stored uses created data (such as audio data, phone directory etc.) according to mobile terminal
Deng.In addition, memory 720 may include high-speed random access memory, can also include nonvolatile memory, for example, at least
One disk memory, flush memory device or other volatile solid-state parts.
Input unit 730 can be used for receiving the number or character information of input, and generates and set with the user of mobile terminal
It sets and the related key signals of function control inputs.Specifically, input unit 730 may include touch panel 731, such as touch screen,
And other input equipments 732, other input equipments 732 can include but is not limited to physical keyboard, function key (such as volume control
Button processed, switch key etc.), it is trace ball, mouse, one or more in operating lever etc..
Display unit 740 can be used for showing information input by user or the information and mobile terminal that are supplied to user
Various menus.Display unit 740 may include display panel 741, optionally, liquid crystal display (Liquid may be used
Crystal Display, LCD), the forms such as Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED)
To configure display panel 741.Further, touch panel 731 can cover display panel 741, when touch panel 731 detects
After touch operation on or near it, processor 780 is sent to determine the type of touch event, is followed by subsequent processing 780 basis of device
The type of touch event processes.Although in the figure 7, touch panel 731 and display panel 741 are as two independent components
Realize input and the input function of mobile terminal, but in some embodiments it is possible to by touch panel 731 and display panel
741 is integrated and that realizes mobile terminal output and input function.
Mobile terminal may also include at least one sensor 750, such as optical sensor, motion sensor and other sensings
Device.
Voicefrequency circuit 760, loud speaker 761, microphone 762 can provide the audio interface between user and mobile terminal.
WiFi belongs to short range wireless transmission technology, and mobile terminal can help user to receive and dispatch electricity by WiFi module 770
Sub- mail, browsing webpage and access streaming video etc., it has provided wireless broadband internet to the user and has accessed.Although Fig. 7 shows
Go out WiFi module 770, but it is understood that, and it is not belonging to must be configured into for mobile terminal, it completely can be according to need
It to be omitted in the range for the essence for not changing invention.
Processor 780 is the control centre of mobile terminal, utilizes each of various interfaces and the entire mobile terminal of connection
A part by running or execute the software program and/or module that are stored in memory 720, and calls and is stored in storage
Data in device 720 execute the various functions and processing data of mobile terminal, to carry out integral monitoring to mobile terminal.It can
Choosing, processor 780 may include one or more processing units；Preferably, processor 780 can integrate application processor and modulation
Demodulation processor, wherein the main processing operation system of application processor, user interface and application program etc., modulation /demodulation processing
Device mainly handles wireless communication.It is understood that above-mentioned modem processor can not also be integrated into processor 780.
Mobile terminal further includes the power supply 790 (such as battery) powered to all parts, it is preferred that power supply can pass through electricity
Management system and processor 780 are logically contiguous, to realize management charging, electric discharge and power consumption by power-supply management system
The functions such as management.
It is appreciated that structure shown in Fig. 7 is only to illustrate, mobile terminal may also include than shown in Fig. 7 more or more
Few component, or with the configuration different from shown in Fig. 7.Hardware, software or its group may be used in each component shown in fig. 7
It closes and realizes.
The computer program of the regulation and control method, device and mobile terminal for the antenna radiation performance that the embodiment of the present invention is provided
Product, including the computer readable storage medium of program code is stored, the instruction that said program code includes can be used for executing
Method described in previous methods embodiment, specific implementation can be found in embodiment of the method, and details are not described herein.
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description
It with the specific work process of mobile terminal, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.To those skilled in the art, it can understand above-mentioned term in the present invention with concrete condition
Concrete meaning.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
Finally it should be noted that：Above example, only specific implementation mode of the invention, to illustrate the skill of the present invention
Art scheme, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to the present invention into
Go detailed description, it should be understood by those skilled in the art that：Any one skilled in the art takes off in the present invention
In the technical scope of dew, it can still modify to the technical solution recorded in previous embodiment or can readily occur in change
Change or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make relevant art
Scheme essence be detached from technical solution of the embodiment of the present invention spirit and scope, should all cover protection scope of the present invention it
It is interior.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (12)
1. a kind of regulation and control method of antenna radiation performance, which is characterized in that the method is applied to mobile terminal, the method packet
It includes：
Detect the electrical property feature of the aerial signal of the mobile terminal；The aerial signal includes the transmitting signal for being sent to antenna side
And/or the reflection signal from antenna side；
Judge whether the electrical property feature detected matches with the electrical property feature to prestore, wherein the electrical property feature to prestore is behaved
The electrical property feature of aerial signal when body is close；
If it does, reducing the radiant power of current transmitting antenna according to preset back-off SAR standards.
2. according to the method described in claim 1, it is characterized in that, the aerial signal of the detection mobile terminal it is electrical
The step of feature, including：
Receive the aerial signal of the antenna bidirectional coupler sensing of the mobile terminal；
Analog-to-digital conversion process is carried out to the aerial signal；
The electrical property feature of the aerial signal is calculated according to the aerial signal of digital form, the electrical property feature includes power
Variation characteristic or impedance variations feature.
3. according to the method described in claim 2, it is characterized in that, described judge the electrical property feature that detects and prestore
The step of whether electrical property feature matches, including：
If the electrical property feature detected includes changed power feature, current work(is determined according to the changed power feature
Rate section；
If the power interval fall within the human body to prestore it is close when power bracket in, the electrical property feature that confirmly detects
It is matched with the electrical property feature to prestore.
4. according to the method described in claim 2, it is characterized in that, described judge the electrical property feature that detects and prestore
The step of whether electrical property feature matches, including：
If the electrical property feature detected includes impedance variations feature, current resistance is determined according to the impedance variations feature
Anti- section；
If the impedance section fall within the human body to prestore it is close when impedance ranges in, the electrical property feature that confirmly detects
It is matched with the electrical property feature to prestore.
5. according to the method described in claim 1, it is characterized in that, described work as according to the reduction of preset back-off SAR standards
The step of radiant power of preceding transmitting antenna, including：
The electrical property feature detected and the human body to prestore are subjected to matching operation apart from electrical property feature, wherein the human body
Include at least two electrical property features apart from the corresponding aerial signal in section apart from electrical property feature；
According to matching result determine belonging to current human apart from section；
According to the radiation work(for reducing current transmitting antenna apart from the corresponding back-off SAR standards in section belonging to current human
Rate.
6. according to the method described in claim 1, it is characterized in that, described work as according to the reduction of preset back-off SAR standards
The step of radiant power of preceding transmitting antenna, including：
In preset duration, the radiation of current transmitting antenna is reduced according to the decline gear in preset back-off SAR standards
Power.
7. according to the method described in claim 1, it is characterized in that, the method further includes：
If the electrical property feature detected and the electrical property feature to prestore mismatch, the radiant power of current transmitting antenna is detected
Whether less than it is preset wait for pitch limit；
If so, raising the radiant power of current transmitting antenna.
8. according to the method described in claim 1, it is characterized in that, the method further includes：
If the mobile terminal opens human body close to scene mode of learning, the antenna letter currently detected close under distance is recorded
Number electrical property feature；
Scene learning data is generated, the scene learning data includes：The type identification of the mobile terminal, the human body are close
The range marker of scene and the electrical property feature；
The scene learning data is sent to the Cloud Server of the mobile terminal, so that the Cloud Server is according to receiving
Scene learning data carries out big data analysis, generates back-off SAR corresponding with the type identification and the range marker
Standard.
9. a kind of regulation device of antenna radiation performance, which is characterized in that described device is set to mobile terminal, described device packet
It includes：
Detection module, the electrical property feature of the aerial signal for detecting the mobile terminal；The aerial signal includes being sent to day
The transmitting signal of line side and/or the reflection signal from antenna side；
Judgment module, for judging whether the electrical property feature detected matches with the electrical property feature to prestore, wherein prestore
Electrical property feature is the electrical property feature of aerial signal when human body is close；
Processing module, for if it does, reducing the radiation work(of current transmitting antenna according to preset back-off SAR standards
Rate.
10. device according to claim 9, which is characterized in that the detection module is used for：
Receive the aerial signal of the antenna bidirectional coupler sensing of the mobile terminal；
Analog-to-digital conversion process is carried out to the aerial signal by radio-frequency front-end；
The electrical property feature of the aerial signal is calculated according to the aerial signal of digital form, the electrical property feature includes power
Variation characteristic or impedance variations feature.
11. device according to claim 9, which is characterized in that described device further includes：
Study module records currently if opening human body close to scene mode of learning for the mobile terminal close under distance
The electrical property feature of the aerial signal detected；Scene learning data is generated, the scene learning data includes：The mobile terminal
Range marker and the electrical property feature close to scene of type identification, the human body；The scene learning data is sent to institute
The Cloud Server of mobile terminal is stated, so that the Cloud Server carries out big data analysis according to the scene learning data received,
Generate back-off SAR standards corresponding with the type identification and the range marker.
12. a kind of mobile terminal, which is characterized in that the mobile terminal configuration is had the right requirement 9-11 any one of them antennas
The regulation device of radiance.
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