CN105592197B - A kind of method and master terminal selecting launch terminal - Google Patents
A kind of method and master terminal selecting launch terminal Download PDFInfo
- Publication number
- CN105592197B CN105592197B CN201410557449.8A CN201410557449A CN105592197B CN 105592197 B CN105592197 B CN 105592197B CN 201410557449 A CN201410557449 A CN 201410557449A CN 105592197 B CN105592197 B CN 105592197B
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- Prior art keywords
- terminal
- master
- master terminal
- launch
- transmission power
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
Abstract
The invention discloses a kind of methods and master terminal for selecting launch terminal, applied to there are in the scene of at least three terminals, which is characterized in that the described method includes: master terminal sends baseband signal to each secondary terminal by wireless device;The master terminal receives the feedback information that each secondary terminal returns;The master terminal selects optimal secondary terminal as launch terminal according to the feedback information, scheme through the invention, solve the problems, such as that terminal injures high radiance caused by human body head, it is used by the selection of optimal secondary terminal, it reduces in communication process, electromagnetic radiation of the radio wave of transmitting to the number of people.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of methods and master terminal for selecting launch terminal.
Background technique
As the improvement of people's living standards, all kinds of intelligent terminals (mobile phone dresses terminal) have entered into common people house, at
For the indispensable tool of the daily information interchange of people.When people use intelligent terminal, the distance of terminal and human body is close, when making
Voice communication is carried out with Intelligent wireless terminal, terminal earpiece can be close to human body head.When terminal works, terminal antenna externally emits
Radio wave, radio wave can generate electromagnetic radiation to the human body head of abutting, and prolonged use intelligent terminal carries out voice
Call, brings bad hidden danger to human health.And when base station signal strength is lower, in order to guarantee the link matter of wireless communication
Amount, terminal can improve the transmission power of itself, may be to maximum transmission power (for example, the maximum transmission power of GSM900 can
Reach 33dBm).In communication process, transmission power is bigger, and intelligent terminal is stronger to the radiation intensity of human body head.
Summary of the invention
The object of the present invention is to provide a kind of methods and master terminal for selecting launch terminal, to solve terminal to human body head
The problem of caused high radiance injures.
To achieve the goals above, the present invention provides a kind of methods for selecting launch terminal, applied to there are at least
In the scene of three terminals, which comprises
Master terminal sends baseband signal to each secondary terminal by wireless device;
The master terminal receives the feedback information that each secondary terminal returns;
The master terminal selects optimal secondary terminal as launch terminal according to the feedback information.
Preferably, before the master terminal sends baseband signal to each secondary terminal by wireless device, further includes:
The master terminal encodes control command, and the control command after coding is sent to wireless device;
Control command coding after the coding is encapsulated as the first AT instruction by the wireless device, and by the first AT
Instruction is sent to each secondary terminal;
The first AT received instruction is converted to standard AT instruction by each secondary terminal, and executes the standard AT
The wireless connection by the wireless device and the master terminal is realized in instruction.
Preferably, when the master terminal sends baseband signal to each secondary terminal by wireless device, further includes:
The master terminal closes the radio frequency transmitter circuitry power supply of itself, to guarantee not emit uplink signal.
Preferably, the master terminal selects optimal secondary terminal as launch terminal according to the feedback information, specifically:
The master terminal receives the transmission power that each secondary terminal returns;
The master terminal is ranked up the transmission power of each secondary terminal;
The master terminal selects the smallest secondary terminal of the transmission power as launch terminal.
Preferably, after the master terminal sends baseband signal to each secondary terminal by wireless device, further includes:
The baseband signal that each secondary end-on receives is modulated amplification respectively and obtains radiofrequency signal, and will be described
Radiofrequency signal is sent to corresponding base station;
The base station carries out signal-to-noise ratio computation to the radiofrequency signal, obtains the transmission power of each secondary terminal, and will
Obtained transmission power is sent to each secondary terminal.
Preferably, the master terminal selects optimal secondary terminal as launch terminal according to the feedback information, specifically:
The master terminal receives the received signal power that each secondary terminal returns;
The master terminal calculates signal power according to itself transmission signal power and the received signal power received
Loss value;
The master terminal is ranked up the signal power loss value of each secondary terminal;
The master terminal selects the maximum secondary terminal of the signal power loss value as launch terminal.
Preferably, the master terminal according to the feedback information select optimal secondary terminal as launch terminal after, also wrap
It includes:
Whether the uplink transmission power of launch terminal described in the master terminal periodic monitor, determine the uplink transmission power
Meet preset requirement;
When the uplink transmission power does not meet preset requirement, the master terminal reselects new launch terminal.
Preferably, the master terminal according to the feedback information select optimal secondary terminal as launch terminal after, also wrap
It includes:
The master terminal disconnects the wireless connection with each secondary terminal in addition to the launch terminal.
The present invention also provides a kind of master terminal, the master terminal includes: sending module, receiving module and selecting module;
The sending module, for sending baseband signal to each secondary terminal by wireless device;
The receiving module, the feedback information returned for receiving each secondary terminal;
The selecting module, for selecting optimal secondary terminal as launch terminal according to the feedback information.
Preferably, the master terminal further includes processing module;
The processing module, for closing itself radio frequency transmitter circuitry power supply.
Preferably, the selecting module, is specifically used for:
Receive the transmission power that each secondary terminal returns;
The transmission power of each secondary terminal is ranked up;
Select the smallest secondary terminal of the transmission power as launch terminal.
Preferably, the selecting module, is specifically used for:
Receive the received signal power that each secondary terminal returns;
Signal power loss value is calculated according to the transmission signal power of itself and the received signal power received;
The signal power loss value of each secondary terminal is ranked up;
Select the maximum secondary terminal of the signal power loss value as launch terminal.
Preferably,
The processing module is also used to the uplink transmission power of launch terminal described in periodic monitor, determines the uplink hair
Penetrate whether power meets preset requirement;
The selecting module is also used to reselect new hair when the uplink transmission power does not meet preset requirement
Penetrate terminal.
Preferably,
The processing module is also used to disconnect the wireless connection with each secondary terminal in addition to the launch terminal.
Scheme through the invention solves the problems, such as that terminal injures high radiance caused by human body head, leads to
The selection for crossing optimal secondary terminal uses, and reduces in communication process, electromagnetic radiation of the radio wave of transmitting to the number of people.
Detailed description of the invention
Fig. 1 is the flow diagram of selection launch terminal provided by the embodiment of the present invention;
Fig. 2 is the idiographic flow schematic diagram of selection launch terminal provided by the embodiment of the present invention;
Fig. 3 is the schematic device of master terminal provided by the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to specific reality
Example is applied to be described in detail.
Fig. 1 is selection launch terminal method provided by the embodiment of the present invention, this method comprises:
Step 101, master terminal sends baseband signal to each secondary terminal by wireless device.
Before this step, further includes:
The master terminal encodes control command, and the control command after coding is sent to wireless device;
Control command coding after the coding is encapsulated as the first AT instruction by the wireless device, and by the first AT
Instruction is sent to each secondary terminal;
The first AT received instruction is converted to standard AT instruction by each secondary terminal, and executes the standard AT
The wireless connection by the wireless device and the master terminal is realized in instruction.
In this step implementation procedure, further includes:
The master terminal closes the radio frequency transmitter circuitry power supply of itself, to guarantee not emit uplink signal.
Step 102, the master terminal receives the feedback information that each secondary terminal returns.
Step 103, the master terminal selects optimal secondary terminal as launch terminal according to the feedback information.
In this step, it is preferable that the master terminal selects optimal secondary terminal as launch terminal according to the feedback information,
Specifically:
The master terminal receives the transmission power that each secondary terminal returns;
The master terminal is ranked up the transmission power of each secondary terminal;
The master terminal selects the smallest secondary terminal of the transmission power as launch terminal.
Further, after the master terminal sends baseband signal to each secondary terminal by wireless device, further includes:
The baseband signal that each secondary end-on receives is modulated amplification respectively and obtains radiofrequency signal, and penetrates described
Frequency signal is sent to corresponding base station;
The base station carries out signal-to-noise ratio computation to the radiofrequency signal, obtains the transmission power of each secondary terminal, and will
Obtained transmission power is sent to each secondary terminal.
Wherein, in this step, the master terminal selects optimal secondary terminal as launch terminal, tool according to the feedback information
Body are as follows:
The master terminal receives the received signal power that each secondary terminal returns;
The master terminal calculates signal power according to itself transmission signal power and the received signal power received
Loss value;
The master terminal is ranked up the signal power loss value of each secondary terminal;
The master terminal selects the maximum secondary terminal of the signal power loss value as launch terminal.
Further, after this step, further includes:
Whether the uplink transmission power of launch terminal described in the master terminal periodic monitor, determine the uplink transmission power
Meet preset requirement;
When the uplink transmission power does not meet preset requirement, the master terminal reselects new launch terminal.
And the master terminal disconnects the wireless connection with each secondary terminal in addition to the launch terminal.
The intention of scheme in order to better illustrate the present invention is illustrated below with a specific embodiment.Nothing therein
Line apparatus can be bluetooth equipment or WIFI, and multiple terminal devices can be smartwatch, Intelligent bracelet etc., as shown in Fig. 2,
It is illustrated using bluetooth equipment as wireless device.
When user needs to dial or receive calls, specifically,
Step 201, master terminal is wirelessly connected by bluetooth equipment and each secondary terminal.
In this step, built-in control command is carried out coding and is sent to Bluetooth chip by main intelligent terminal processor, blue
Tooth chip is encoded the command string by bluetooth AT (Attention) instruction set, is sent to each pair through Bluetooth antenna
Intelligent terminal blue-teeth communication equipment, the bluetooth AT that each pair intelligent terminal blue-teeth communication equipment sends main intelligent terminal are instructed
Communication standard AT instruction is converted to, and is sent to respective processor, each pair intelligent terminal processor executes AT instruction, opens respectively
Move the radio circuit of each secondary intelligent terminal.
Further, after main intelligent terminal and each secondary intelligent terminal are wirelessly connected, main intelligent terminal controller control is closed
The power supply of the radio frequency transmitter circuitry of itself is closed, i.e., the radio frequency transmitter circuitry and transmitting antenna of main intelligent terminal stop working, main intelligence
Energy terminal does not emit uplink signal.
Step 202, master terminal sends baseband signal to each secondary terminal by bluetooth equipment.
Specifically, main intelligent terminal controller sends the I/Q orthogonal simulation baseband signal of itself by bluetooth equipment to
Other secondary intelligent terminals.
Step 203, each secondary terminal sends feedback information to master terminal.
Specifically, may include:
(1) after multiple secondary intelligent terminals are respectively received the I/Q orthogonal simulation baseband signal of main intelligent terminal, pass through respectively
After intermediate frequency quadrature modulation and up-conversion, using emission filter, the signal of filter output first passes through power stage and amplifies to reach
To the level of drive needed for final stage RF power amplifier, finally passes through power amplifier PA, be then transmitted to cell base station.Cell base station connects
After the uplink signal for receiving the transmitting of each secondary intelligent terminal, can based on the semaphore request for meeting wireless communication link, base station into
Row signal-to-noise ratio SIR is calculated, and then issues power adjustment TPC instruction respectively to each secondary intelligent terminal, each pair intelligent terminal with
Adjustment its transmission power.
(2) wherein, main intelligent terminal passes through Bluetooth antenna, and the Bluetooth signal power of transmission is P, and one of secondary intelligence is eventually
Terminating the Bluetooth signal power received is P1, then spatial power loss is Δ P1=P-P1.Secondary intelligent terminal feedback reception power
Numerical value P1 gives main intelligent terminal.
Step 204, master terminal handles the feedback information received, determines launch terminal.
Specifically,
After (1) of above-mentioned steps 203, transmission power numerical value of the main intelligent terminal to each secondary intelligent terminal
{ power1, power2, power3... } is ranked up, choose wherein numerical value minimum Min power1, power2,
Power3... secondary intelligent terminal }, as the uplink signal launch terminal of this call, antenna is then used as this to converse
Transmitting antenna.
Because the transmission power and electromagnetic radiation intensity of terminal are proportional, transmission power is bigger, and electromagnetic radiation is strong
It spends bigger.By the way that among multiple terminals, electromagnetic radiation intensity is can be significantly reduced in the terminal for selecting transmission power minimum,
Reduce the risk that user uses mobile phone for a long time.
After (2) of above-mentioned steps 203, space loss performance number { Δ of the main intelligent terminal to each secondary intelligent terminal
P1, Δ P2, Δ P3... } it is ranked up, the secondary intelligent terminal of numerical value maximum Max { Δ P1, Δ P2, Δ P3... } is chosen as this
The uplink signal launch terminal of secondary call, the transmitting antenna that antenna is then used as this to converse.
Space loss is bigger, i.e. Δ P1 is bigger, and main intelligent terminal is bigger at a distance from this secondary intelligent terminal.Because of electromagnetism
Radiation intensity can decline as distance increases, and secondary intelligent terminal is bigger as the distance of launch terminal and main intelligent terminal,
Electromagnetic radiation intensity in signal emission process is smaller, to the security risk of user with regard to smaller.
Further, main intelligent terminal is after choosing launch terminal, main intelligent terminal actively disconnect with except launch terminal it
The bluetooth wireless connection of outer other each secondary intelligent terminals.
Step 205, the transmission power of master terminal monitoring launch terminal.
Specifically, because user will do it position movement in communication process, between main intelligent terminal and secondary intelligent terminal
Position can change, and the azimuth of terminal antenna can also change therewith, and terminal isotropically radiated power can change, then
The launching effect of uplink can change, and signal-to-noise ratio SIR is also with changing.So conversing in main intelligent terminal
Cheng Zhong can monitor the changed power of uplink signal launch terminal, and it is more to determine whether its transmission power level increases, if transmitting function
Rate increase rate is greater than 3dB, then main intelligent terminal can reselect the launch terminal of uplink signal according to process is selected before.
If transmission power increase rate is less than 3dB, launch terminal continues the signal received by intermediate frequency quadrature modulation and upper change
After frequency, using emission filter, the signal of filter output first passes through power stage and amplifies to reach needed for final stage RF power amplifier
The level of drive is finally passed through power amplifier PA, is launched finally by launch terminal day bundle of lines modulated carrier.
In order to achieve the object of the present invention, the embodiment of the invention also provides a kind of master terminals, as shown in figure 3, the master
Terminal includes: sending module 31, receiving module 32 and selecting module 33;
The sending module 31, for sending baseband signal to each secondary terminal by wireless device;
The receiving module 32, the feedback information returned for receiving each secondary terminal;
The selecting module 33, for selecting optimal secondary terminal as launch terminal according to the feedback information;It is specific to use
In the transmission power for receiving each secondary terminal return;The transmission power of each secondary terminal is ranked up;Select the hair
The smallest secondary terminal of power is penetrated as launch terminal;The received signal power returned specifically for receiving each secondary terminal;Root
Signal power loss value is calculated according to the transmission signal power of itself and the received signal power that receives;To each secondary terminal
Signal power loss value be ranked up;Select the maximum secondary terminal of the signal power loss value as launch terminal.
Processing module 34, for closing itself radio frequency transmitter circuitry power supply;It is also used to launch terminal described in periodic monitor
Uplink transmission power, determine whether the uplink transmission power meets preset requirement;It is also used to when the uplink transmission power
When not meeting preset requirement, new launch terminal is reselected;It is also used to disconnect with each pair in addition to the launch terminal eventually
The wireless connection at end.
Scheme through the invention solves the problems, such as that terminal injures high radiance caused by human body head, leads to
The selection for crossing optimal secondary terminal uses, and reduces in communication process, electromagnetic radiation of the radio wave of transmitting to the number of people.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (13)
1. a kind of method for selecting launch terminal, applied to there are in the scene of at least three terminals, which is characterized in that described
Method includes:
Master terminal encodes control command, and the control command after coding is sent to wireless device;
Control command coding after the coding is encapsulated as the first AT instruction by the wireless device, and the first AT is instructed
It is sent to each secondary terminal;
The first AT received instruction is converted to standard AT instruction by each pair terminal, and executes the standard AT instruction, real
Now pass through the wireless connection of the wireless device and the master terminal;
The master terminal sends baseband signal to each secondary terminal by wireless device;
The master terminal receives the feedback information that each secondary terminal returns;
The master terminal selects optimal secondary terminal as launch terminal according to the feedback information.
2. the method as described in claim 1, which is characterized in that the master terminal sends base to each secondary terminal by wireless device
When band signal, further includes:
The master terminal closes the radio frequency transmitter circuitry power supply of itself, to guarantee not emit uplink signal.
3. the method as described in claim 1, which is characterized in that the master terminal is optimal secondary whole according to feedback information selection
End is used as launch terminal, specifically:
The master terminal receives the transmission power that each secondary terminal returns;
The master terminal is ranked up the transmission power of each secondary terminal;
The master terminal selects the smallest secondary terminal of the transmission power as launch terminal.
4. method as claimed in claim 3, which is characterized in that the master terminal sends base to each secondary terminal by wireless device
After band signal, further includes:
The baseband signal that each secondary end-on receives is modulated amplification respectively and obtains radiofrequency signal, and the radio frequency is believed
Number it is sent to corresponding base station;
The base station carries out signal-to-noise ratio computation to the radiofrequency signal, obtains the transmission power of each secondary terminal, and will obtain
Transmission power be sent to each secondary terminal.
5. the method as described in claim 1, which is characterized in that the master terminal is optimal secondary whole according to feedback information selection
End is used as launch terminal, specifically:
The master terminal receives the received signal power that each secondary terminal returns;
The master terminal calculates signal power loss according to itself transmission signal power and the received signal power received
Value;
The master terminal is ranked up the signal power loss value of each secondary terminal;
The master terminal selects the maximum secondary terminal of the signal power loss value as launch terminal.
6. the method as described in claim 1, which is characterized in that the master terminal is optimal secondary whole according to feedback information selection
End is as after launch terminal, further includes:
The uplink transmission power of launch terminal described in the master terminal periodic monitor, determines whether the uplink transmission power meets
Preset requirement;
When the uplink transmission power does not meet preset requirement, the master terminal reselects new launch terminal.
7. the method as described in claim 1, which is characterized in that the master terminal is optimal secondary whole according to feedback information selection
End is as after launch terminal, further includes:
The master terminal disconnects the wireless connection with each secondary terminal in addition to the launch terminal.
8. a kind of master terminal, which is characterized in that the master terminal includes: sending module, receiving module and selecting module;
The sending module, for sending baseband signal to each secondary terminal by wireless device;Before this, further includes:
Master terminal encodes control command, and the control command after coding is sent to wireless device;
Control command coding after the coding is encapsulated as the first AT instruction by the wireless device, and the first AT is instructed
It is sent to each secondary terminal;
The first AT received instruction is converted to standard AT instruction by each pair terminal, and executes the standard AT instruction, real
Now pass through the wireless connection of the wireless device and the master terminal;
The receiving module, the feedback information returned for receiving each secondary terminal;
The selecting module, for selecting optimal secondary terminal as launch terminal according to the feedback information.
9. master terminal as claimed in claim 8, which is characterized in that the master terminal further includes processing module;
The processing module, for closing itself radio frequency transmitter circuitry power supply.
10. master terminal as claimed in claim 8, which is characterized in that the selecting module is specifically used for:
Receive the transmission power that each secondary terminal returns;
The transmission power of each secondary terminal is ranked up;
Select the smallest secondary terminal of the transmission power as launch terminal.
11. master terminal as claimed in claim 8, which is characterized in that the selecting module is specifically used for:
Receive the received signal power that each secondary terminal returns;
Signal power loss value is calculated according to the transmission signal power of itself and the received signal power received;
The signal power loss value of each secondary terminal is ranked up;
Select the maximum secondary terminal of the signal power loss value as launch terminal.
12. master terminal as claimed in claim 9, which is characterized in that
The processing module is also used to the uplink transmission power of launch terminal described in periodic monitor, determines the uplink transmitting function
Whether rate meets preset requirement;
It is whole to be also used to reselect new transmitting when the uplink transmission power does not meet preset requirement for the selecting module
End.
13. master terminal as claimed in claim 9, which is characterized in that
The processing module is also used to disconnect the wireless connection with each secondary terminal in addition to the launch terminal.
Priority Applications (2)
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CN201410557449.8A CN105592197B (en) | 2014-10-20 | 2014-10-20 | A kind of method and master terminal selecting launch terminal |
PCT/CN2015/073726 WO2016061972A1 (en) | 2014-10-20 | 2015-03-05 | Method for selecting transmitting terminal and main terminal |
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CN201410557449.8A CN105592197B (en) | 2014-10-20 | 2014-10-20 | A kind of method and master terminal selecting launch terminal |
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CN105592197A CN105592197A (en) | 2016-05-18 |
CN105592197B true CN105592197B (en) | 2019-10-01 |
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CN201410557449.8A Expired - Fee Related CN105592197B (en) | 2014-10-20 | 2014-10-20 | A kind of method and master terminal selecting launch terminal |
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WO (1) | WO2016061972A1 (en) |
Families Citing this family (2)
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CN109714815A (en) * | 2017-10-26 | 2019-05-03 | 中国电信股份有限公司 | For combining method, internet-of-things terminal and the narrowband Internet of Things of transmitting |
CN108513014B (en) * | 2018-04-08 | 2021-03-26 | 深圳辉烨物联科技有限公司 | Method, device, terminal and storage medium for reducing call radiation of mobile phone |
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CN101370303B (en) * | 2008-09-22 | 2012-05-30 | 宇龙计算机通信科技(深圳)有限公司 | Network selection method, terminal and system |
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EP2645552B1 (en) * | 2012-02-09 | 2020-04-22 | Hitachi, Ltd. | Switching element, power converter, direct current transmission system, current control device, method of controlling power converter, and method of controlling current in voltage source converter |
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- 2014-10-20 CN CN201410557449.8A patent/CN105592197B/en not_active Expired - Fee Related
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2015
- 2015-03-05 WO PCT/CN2015/073726 patent/WO2016061972A1/en active Application Filing
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CN101127550A (en) * | 2006-08-16 | 2008-02-20 | 华为技术有限公司 | A method and system for identifying emission antenna |
US8229492B2 (en) * | 2009-05-08 | 2012-07-24 | Qualcomm Incorporated | Throttling transmit power in a WWAN device based upon thermal input |
CN101902239A (en) * | 2010-08-02 | 2010-12-01 | 惠州Tcl移动通信有限公司 | Communication method and mobile communication terminal |
CN102497663A (en) * | 2011-12-13 | 2012-06-13 | 北京邮电大学 | Femtocell power control method and control device |
CN102665260A (en) * | 2012-05-21 | 2012-09-12 | 哈尔滨工业大学 | Power allocation combining multi-antenna terminal cooperation type multiple input multiple output (MIMO) relay selection method |
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WO2016061972A1 (en) | 2016-04-28 |
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