WO2014166249A1 - 一种自适应可控功率式wifi调整方法及装置 - Google Patents

一种自适应可控功率式wifi调整方法及装置 Download PDF

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Publication number
WO2014166249A1
WO2014166249A1 PCT/CN2013/086860 CN2013086860W WO2014166249A1 WO 2014166249 A1 WO2014166249 A1 WO 2014166249A1 CN 2013086860 W CN2013086860 W CN 2013086860W WO 2014166249 A1 WO2014166249 A1 WO 2014166249A1
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Prior art keywords
adjustment
wifi
power
value
module
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PCT/CN2013/086860
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English (en)
French (fr)
Inventor
沈少武
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP13881494.2A priority Critical patent/EP3010291B1/en
Priority to US14/904,701 priority patent/US10051563B2/en
Publication of WO2014166249A1 publication Critical patent/WO2014166249A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/246—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where the output power of a terminal is based on a path parameter calculated in said terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H04W52/281—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission taking into account user or data type priority
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H04W52/288—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission taking into account the usage mode, e.g. hands-free, data transmission, telephone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0264—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by selectively disabling software applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
    • H04W52/226—TPC being performed according to specific parameters taking into account previous information or commands using past references to control power, e.g. look-up-table
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present technology relates to the field of wireless communications, and in particular, to an adaptive controllable power WIFI adjustment method and apparatus.
  • WIFI Worldwide Interoperability for Microwave Access
  • the power control mode of WIFI in mobile phones is too single, generally fixed transmission at rated power, or indirect transmission with a certain duty ratio.
  • this normally-received transmission mode power is continuously transmitted to the mobile phone.
  • Power consumption brings great challenges.
  • long-term high-power transmission will generate certain radiation to the human body.
  • the power control is currently not solved by WIFI.
  • the maximum output power fluctuation is generally about plus or minus 3DB
  • the peak power fluctuation is about 5DB
  • the maximum peak power can reach 24DB.
  • the stability of the power output is A lot of randomness requires a controllable method to make targeted adjustments to the actual user power.
  • the difference in WIFI calibration cannot change the consistency requirements of WIFI performance of different board manufacturers and batches.
  • the WIFI target transmission power of different mobile phones may vary greatly. How to self-adjust and achieve safe and stable working power is also a challenge for the production and calibration of each mobile phone. Even if the WIFI of each terminal is calibrated and tested in detail, There is no guarantee that the power to the user's mobile phone is precisely controllable.
  • WIFI works under constant high power for a long time
  • the mobile phone usage time will be greatly shortened, the power consumption will increase rapidly, the terminal will be severely heated, due to the mobile phone chip temperature When it rises, the clock frequency drift increases, and the stability and transmission rate of the WIFI connection terminal are affected.
  • the power between different channels and rates will also be different, and the power of d, will directly affect the key factors in the performance of the EVM (error vector magnitude), EVM performance of poor mobile phones
  • EVM error vector magnitude
  • EVM performance of poor mobile phones The modem performance will be affected, which in turn affects the channel quality and download rate of the WIFI.
  • the object of the present invention is to provide an adaptive controllable power type WIFI adjustment method, which solves the single power control method of the mobile phone WIFI in the prior art, and can not make the mobile phone WIFI always in various application environments, communication states and personalized demands. The problem at the best working condition.
  • an adaptive controllable power WIFI adjustment method including the following steps applicable to a WIFI mobile terminal:
  • the adjustment object of the WIFI By detecting the adjustment object of the WIFI, obtaining the current value of the WIFI adjustment object; comparing the adjustment target value with the current value, and performing coupling feedback on the comparison result; According to the comparison result of the coupling feedback, the adjustment object of the WIFI is initially adjusted and finely adjusted, and the adjusted value of the adjustment object is matched with the adjustment target value by precisely adjusting the calibration correction.
  • the detecting the current WIFI application environment and/or communication status includes a wireless configuration information status, an application scene status, a signal strength status, and a user interaction configuration status.
  • the adjustment object is determined as a transmission power adjustment.
  • the adjustment object is determined as an output power adjustment.
  • the step of detecting the WIFI adjustment object and obtaining the current value of the WIFI adjustment object further includes:
  • the WIFI adjustment target value is adaptively adjusted.
  • the step of performing initial adjustment and fine adjustment on the adjustment object of the WIFI according to the comparison result of the coupling feedback comprises:
  • the adjustment target of the WIFI is finely adjusted according to the adjustment direction and the power control mode; wherein the power control mode includes a power analog adjustable control mode and a power digital controllable mode.
  • the step of adjusting the adjusted object by adjusting the calibration correction to coincide with the adjusted target value comprises:
  • an adaptive controllable power WIFI adjustment apparatus comprising the following modules disposed in a WIFI mobile terminal:
  • the determining module is set to: determine the WIFI adjustment object and adjust the target value by detecting the current WIFI application environment and/or communication status;
  • the acquisition module is set to: obtain the current value of the WIFI adjustment object by detecting the adjustment object of the WIFI;
  • the comparison module is configured to: compare the adjustment target value with the current value, and perform coupling feedback on the comparison result;
  • the adjustment module is configured to: perform initial adjustment and fine adjustment on the adjustment target of the WIFI according to the comparison result of the coupling feedback, and adjust the calibration correction to make the adjusted target value consistent with the adjustment target value .
  • the method further comprises:
  • the pre-adjustment module is configured to: adaptively adjust the WIFI adjustment object value according to the determined adjustment target of the WIFI and the adjustment target value.
  • the adjustment module comprises:
  • the first adjusting unit is configured to: perform initial adjustment on the adjustment target of the WIFI according to the comparison result of the coupling feedback, and obtain an adjustment direction and a power control mode of the current value, and according to the adjustment direction and power Control mode, fine-tuning the adjustment object of WIFI;
  • the second adjustment unit is set to: accurately adjust the calibration value of the WIFI adjustment object, and compare it with the adjustment target value to obtain a comparison As a result, when the comparison result is inconsistent, according to the empirical model parameter, the adjustment target adjustment line and the adjustment amplitude are obtained to perform voltage signal control adjustment, so that the adjusted object adjusted value is consistent with the adjustment target value;
  • the power control mode includes a power analog adjustable control mode and a power digital adjustable control mode.
  • the embodiment of the present invention is different from a single fixed power output mode, and fully considers the differential control of multiple application states of the mobile phone WIFI, so that the WIFI transmission quality and performance of the mobile phone are optimized;
  • the embodiment of the present invention is not limited to the simple adjustment of a single load mode, but is dynamically adjustable based on the optimization algorithm, so that the power control and the calibration are organically matched;
  • the embodiment of the invention fully utilizes the internal circuit and software of the mobile phone, adopts digital-analog adjustable technology, adaptive feedback coupling calibration design, and the adjustable mode is scientific and reasonable, intelligent and practical;
  • the embodiment of the present invention fully considers the application state of the mobile phone WIFI, and combines the user's demand for high signal quality, low radiation, low power consumption, and high anti-interference, and adjusts the transmit power of the WIFI to the optimal state at all times, allowing wireless connection. It's smoother and faster.
  • FIG. 1 is a flow chart of an adaptive controllable power WIFI adjustment method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an adaptive controllable power WIFI adjusting apparatus according to an embodiment of the present invention
  • FIG. 3 is a structural diagram of an adaptive controllable power WIFI mobile terminal provided by an example of the present invention.
  • FIG. 4 is a workflow diagram of an adaptive WIFI controllable power circuit provided by an example of the present invention.
  • FIG. 1 is a flowchart of an adaptive controllable power WIFI adjustment method provided by the present invention. As shown in FIG. 1, the following steps are implemented for a WIFI mobile terminal:
  • Step S101 Determine the WIFI adjustment target and the adjustment target value by detecting the current WIFI application environment and/or communication status
  • Step S102 After detecting the adjustment object of the WIFI, obtaining a current value of the WIFI adjustment object;
  • Step S103 Comparing the adjustment target value with a current value, and performing coupling feedback on the comparison result
  • Step S104 Perform initial adjustment and fine adjustment on the adjustment object of the WIFI according to the comparison result of the coupling feedback, and make the adjusted value of the adjustment object coincide with the adjustment target value by precisely adjusting the calibration correction.
  • the detecting the current WIFI application environment and/or communication status includes a wireless configuration information status, an application scene status, a signal strength status, and a user interaction configuration status, where when the current WIFI application environment and/or communication status is detected In the signal strength state, the adjustment object is determined as a transmission power adjustment; when the current WIFI application environment and/or communication status is detected as a wireless configuration information state, an application scenario state, and a user interaction configuration state, the adjustment is performed.
  • the object is determined to be an output power adjustment.
  • the output power adjustment includes a peak and maximum average power value and a fluctuation error and a mean square value.
  • the step of detecting the WIFI adjustment object and obtaining the current value of the WIFI adjustment object further includes: adaptively adjusting the WIFI adjustment object value according to the determining the WIFI adjustment object and the adjustment target value. .
  • the step of performing initial adjustment and fine adjustment on the adjustment object of the WIFI includes: initial adjusting the adjustment object of the WIFI according to the comparison result of the coupling feedback, Obtaining the adjustment direction and power control of the current value According to the adjustment direction and the power control mode, the adjustment target of the WIFI is finely adjusted; wherein the power control mode includes a power simulation adjustable control mode and a power digital adjustable control mode.
  • the step of adjusting the adjusted value of the adjustment object to be consistent with the adjustment target value by accurately adjusting the calibration correction comprises: accurately adjusting the current value of the fine adjustment of the WIFI adjustment object, and correcting The adjustment target value is compared to obtain a comparison result; if the comparison result is inconsistent, according to the empirical model parameter, the adjustment target adjustment line and the adjustment amplitude are obtained to perform voltage signal control adjustment, so that the adjustment target adjusted value and the adjustment The target values are consistent.
  • FIG. 2 is a schematic diagram of an adaptive controllable power WIFI adjustment apparatus provided by the present invention. As shown in FIG. 2, the following modules are provided for use in a WIFI mobile terminal:
  • the determining module 201 is configured to determine an adjustment target of the WIFI and an adjustment target value by detecting an application environment and/or a communication state of the current WIFI.
  • the obtaining module 202 is configured to detect the WIFI adjustment object, and obtain the WIFI adjustment object.
  • the comparison module 203 is configured to compare the adjustment target value with the current value, and perform coupling feedback on the comparison result.
  • the adjustment module 204 is configured to adjust the WIFI according to the comparison result of the coupling feedback.
  • the object is initially adjusted and fine-tuned, and the adjusted value of the adjustment object is made coincident with the adjustment target value by precisely adjusting the calibration correction.
  • the present invention further includes: a pre-adjustment module, configured to adaptively adjust the WIFI adjustment object value according to the determining the WIFI adjustment object and the adjustment target value.
  • the adjusting module 204 includes: a first adjusting unit 2041, configured to perform initial adjustment on the adjustment target of the WIFI according to the comparison result of the coupling feedback, to obtain an adjustment direction and a power control mode of the current value. And according to the adjustment direction and the power control mode, the adjustment object of the WIFI is finely adjusted; the second adjustment unit 2042 is configured to accurately adjust the calibration and correct the current value of the WIFI adjustment object, and combine it with the The adjustment target value is compared to obtain a comparison result. When the comparison result is inconsistent, the adjustment object is obtained according to the empirical model parameter. Adjusting the line and adjusting the amplitude to perform voltage signal control adjustment, so that the adjusted value of the adjustment object is consistent with the adjustment target value; wherein the power control mode includes a power analog adjustable control mode and a power digital adjustable control mode.
  • the mobile terminal with adjustable WIFI performance includes a power adaptive control module 11 and an adjustable power number.
  • the module 12, the power simulation adjustable module 13, the precise self-calibration module 14, the feedback sample module 15, the wireless mode detection module 16, the application scene detection module 17, the signal strength detection module 18, the user interaction module 19, and the mobile phone of the mobile phone itself The EPPROM module 110, the WIFI chip module 111, and the RF front end module 112.
  • the power adaptive control module 11 is connected to each application detecting module 16-19 and the power digital analog adjustable module 12-13, and is configured to perform different feedback adjustment response control on different WIFI adjustment states.
  • the control end of the module is the output signal of each application detecting module 16-19, and the output end is the input adjusting signal of the power digital analog adjustable module 12-13, and the adjusted power amplitude is calculated and compared according to the feedback value, and the power is adaptive.
  • the control module 11 includes a set of digital voltage correspondence tables, and the output control voltage value is adjusted according to the feedback result to achieve an adaptive voltage signal output until the final perfect match is completed.
  • the power digital adjustable module 12 is connected to the power adaptive control module 11 and the mobile phone EPPROM module 110, and is configured to implement digital calling and adjustment of WIFI output power values under different requirements for different application scenarios.
  • the power digital adjustable module 12 is composed of a non-signaling adjustable module and a signaling adjustable module.
  • the non-signaling adjustable module is adjusted by an open loop power control method. After the module is started, the WIFI chip module is first implemented. Initial loading of 111, after the initialization is completed, the chip is controlled to transmit a piece of power according to the input instruction of the power adaptive control module 11, and the feedback set module 15 collects the received power and feeds back to the power adaptive control module 11 for real-time correction.
  • the non-signaling adjustable module has a set of step adjustment arrays, each step can be 0.5-1DB, the user can configure the settings by themselves, the array parameters contain the target power adjustment value, and change the mobile phone by changing the target power adjustment value. Actual transmit power value.
  • the signaling adjustable module first pre-stores a power and adjustment instruction list. After the signaling operation mode of win is triggered, the power value under the signaling connection is changed by calling the instruction parameter at the frequency of the clock tick. According to the signal strength quality, the adjustment method needs to be implemented by means of table lookup correction. After each correction of the value in the command parameter, the feedback sample module 15 performs real-time sampling, if the adjustment value is different from the actual set value. Recalibration correction is performed by calling the precision self-calibration module 14 until the parameter values under the signaling reach the target value match.
  • the power simulation adjustable module 13 is connected to the power adaptive control module 11 for analog adjustment control of the WIFI output power value, and realizes analog variable output control of the power.
  • the module uses a variable attenuation circuit to calculate the 50 ohm characteristic impedance at the center frequency through a certain model calculation.
  • the adjustment range is about plus or minus 10 DB, which basically covers the maximum and minimum power demand values of the WIFI power.
  • the variable attenuation circuit can be implemented by a variable resistor or by a multi-switch setpoint resistor array.
  • the power simulation adjustable module 13 After receiving the adjustment command and the specific value, the power simulation adjustable module 13 checks the impedance realization model, and obtains the optimal attenuation circuit value under the calculation of the impedance realization model, and then starts the analog adjustment, and then passes through the feedback collection module 15 after adjustment. The correction is detected in real time until it is adjusted to the target power value.
  • the precise self-calibration module 14 is connected to the mobile phone EPPROM module 110 and the feedback clamp module 15 for linear high-precision self-calibration and output of the WIFI chip module 111 P A output power. Firstly, the accurate correction of the power output accuracy is realized, and the output power is stable and flat. At the same time, the auxiliary power digital analog adjustable module 12-13 power adjustment accuracy, because after each power adjustment, the parameters in the mobile phone will change, and a certain need is required. After calibration, the original stored value is corrected, and the power called by the mobile phone will be accurate.
  • the accurate self-calibration module 14 performs linearization test and theoretical power step linearization curve fitting in a certain range of the transmission power, such as 8-24DB, and performs targeted power control parameter adjustment through the curve fitting result. The calibration result is rewritten into the memory of the phone EEPROM110 for real-time recall.
  • the self-calibration module 14 is connected to measure the current power output value, and feeds the sample result to the power adaptive control module 11 and the WIFI chip module 111 to realize real-time feedback-like coupling of the power output.
  • the current value of the output power for the sample measurement is coupled to the comparison end of the power adaptive control module 11 to implement feedback control.
  • the sample signal can be the following two signals:
  • the first type is a voltage value signal
  • the analog-to-digital conversion is realized by a transformer tube
  • the changed power voltage value is transmitted to the feedback detection circuit, and then to the power adaptive control module 11
  • the second type is the coupled power value, and a part of the PA output power is coupled to the operating point power adaptive control module 11 for comparison calculation, determining the current power increase or decrease trend, and then performing the power value according to the change trend.
  • Direction adjustment is
  • the wireless mode detecting module 16 is connected to the power adaptive control module 11 and configured to detect the status of the wireless configuration information such as the channel, the rate, the protocol, and the code stream of the current mobile phone, and perform offset adjustment for different configuration states, and adjust the transmission result to the power.
  • the adaptive control module 11 implements different adjustment modes.
  • the channel scanning mechanism is first activated to fine-tune the channel frequency beyond the power target range by detecting the power error offset values of the high, medium, and low channels (2412MHz//2437 MHz//2472 MHz).
  • the trimming result is written into the corresponding power parameter register.
  • the calibration parameter in this register is called first as the initial reference power.
  • the power error and EVM error value of the connected channel are monitored in real time by the power sampler, and compared with the target reference value, if an offset occurs, the wireless signal detection module feeds back the signal to the power adaptive control module. 11.
  • the feedback is adjusted to the established state.
  • wireless signal detection adjustments such as transmission rate (eg 1M/11M/54M/72M/433M) adjustment, wireless transmission protocol adjustment (802.1 lb/g/n/a/ac), band bandwidth adjustment (eg 20MHZ/40MHZ/80MHZ/ 160MHZ), antenna MIMO and code stream adjustment methods are similar to the channel adjustment method.
  • transmission rate eg 1M/11M/54M/72M/433M
  • wireless transmission protocol adjustment 802.1 lb/g/n/a/ac
  • band bandwidth adjustment eg 20MHZ/40MHZ/80MHZ/ 160MHZ
  • antenna MIMO and code stream adjustment methods are similar to the channel adjustment method.
  • the application scenario detection module 17 is connected to the power adaptive control module 11 for detecting the current state of the mobile phone WIFI and the user demand state in real time.
  • the multi-way selection switch realizes that the input signal is the output enable signal of each sensor, and the output signal is an adaptive control enable signal.
  • the application scene detecting module 17 detects that the input signal is a high level signal that is valid for S1, and if there is strong obstruction control, the input signal is an active low level signal of SO; If it is energy-saving mode, it is a high level signal of T1. If it is the strongest signal mode, it is a low level signal of TO.
  • the application scene detection module 17 also makes an instantaneous detection, and sends a control signal to the power adaptive control module 11 to make real-time power output adjustment.
  • the signal strength detecting module 18 is connected to the WIFI baseband processing circuit and the power adaptive control circuit 11 in the WIFI chip module 111, and is configured to detect the current WIFI received signal strength, the signal strength fluctuation stability, and the signal strength stability in real time. Repeated detection for real-time adjustment when the power error becomes large, enhancing the stability and efficiency of the wireless connection.
  • the RSSI (Received Signal Strength Indication) signal of the WIFI feedback is performed in real time through the baseband. When the signal is weakened, the system automatically improves the reference power accuracy, reduces the frequency error, and enhances the signal strength.
  • the user interaction module 19 is connected to the power adaptive control module 11 for user demand, voice or data transmission throughput performance requirements, low SAR (Specific Absorption Rate) low radiation demand, or high efficiency power mode requirements.
  • the application makes interactive selection, and the mobile phone completes the power output adjustment according to different needs. If the user requires a low SAR environmental protection mode, the output power of the PA can be appropriately reduced. If the user feels that the Internet speed is too poor, the output power of the PA can be appropriately adjusted to improve the channel quality, and the power can be approached to the optimal power point;
  • the mobile phone EPPROM module 110 is connected to the WIFI chip module 111 and the precise self-calibration module 14 to realize storage of power calibration data.
  • the WIFI chip module 111 is connected to the power adaptive control module 11 for detecting the mobile phone WIFI Current signal amplitude RSSI.
  • the RSSI can examine the WIFI, that is, the RF front-end module 112 and the WIFI antenna as a whole, considering the matching performance of the antenna to the RF front-end module 112, the baseband determining chip receiving link quality, the signal strength and its stability, and the WIFI through the signal amplitude strength.
  • the clock matching is self-calibrated, and the calibration result is subjected to load adjustment control by the power adaptive control module 11.
  • the WIFI signal is weak, the current power error and its stability are detected and adjusted to the minimum range of the target value error.
  • the RF front-end module 112 is connected to the WIFI antenna and the WIFI chip module 111 in the mobile phone to implement circuit filtering and impedance matching of the chip output to the antenna.
  • FIG. 4 is a flowchart showing the operation of the adaptive power controllable WIFI mobile terminal of the present invention. As shown in FIG. 4, the method of the mobile terminal of the present invention includes the following steps:
  • Step 401 The mobile phone automatically turns on the power adaptive control module after the WIFI is turned on, and each state sensor and the sample monitoring module are activated;
  • Step 402 The mobile phone detects the state of the wireless configuration information of the current mobile phone through the wireless mode, the application scenario state, the signal strength state, and the user exchange configuration state.
  • Step 403 The mobile phone enters a non-signaling mode, and the mobile phone uses a certain target power as a reference value to transmit at a fixed power, and the feedback sampling module collects the initial power value and fluctuation error of the WIFI;
  • Step 404 The feedback sample module feeds back the sampled result to the power adaptive control module, realizes real-time feedback sample coupling of the power output, compares the actual sample measurement value with the target value, and compares the result to the power adaptive control module. Realize closed loop feedback control adjustment;
  • Step 405 The power adaptive control module outputs an adjustment signal according to the current state, selects an adjustment direction and a power control mode according to the target power, and pre-adjusts the WIFI output power to operate in a correct power range;
  • Step 406 The power digital or analog adjustable module selects a reasonable conditioning mode according to the adjustment signal and the step, and adjusts the output power value;
  • Step 407 Accurate calibration module performs accurate calibration on the output power before and after the chip adjustment, so that The power output of each channel is stable and flat, and at the same time assists in correcting the accuracy of the power adjustment of the digital analog adjustable module;
  • Step 408 The feedback sample module performs power re-sampling. If the actual power value and the target power value do not match or the stability coefficient is too low, indicating the adjustment mode or the parameter mismatch, the power adaptive control module obtains the power adjustment according to the empirical model parameter. The line and the adjustment range are fed back to the digital-mode controllable power module for voltage signal control output;
  • Step 409 If the received power is modulated to the target power value range, the power self-applying control module performs fine-tuning control on the power output according to each feedback module until the complete target point is reached. After one round of adjustment is completed, the adaptive control module receives the real-time receiving from the fourth. Dynamic information from the detection module, ready for the next round of adaptive adjustment.
  • the power adaptive control module of the invention enables the WIFI transmission performance of the mobile phone to be adaptively adjusted according to needs and performance, so that the power performance of the mobile terminal WIFI in various application environments and conditions is self-adjusted, and the mobile phone WIFI is guaranteed at any time.
  • Working with optimal performance, uploading and downloading throughput is the highest, and external influences and human safety radiation are minimized.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
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Abstract

一种自适应可控功率式WIFI调整方法及装置，其方法包括适用于WIFI 移动终端执行的以下步骤：通过侦测当前WIFI的应用环境和/或通讯状态，确定WIFI的调整对象及调整目标值；通过对WIFI的调整对象进行检测，得到WIFI调整对象的当前值；将所述调整目标值与当前值进行比较，并将比较结果进行耦合反馈；根据所述耦合反馈的比较结果，对所述WIFI的调整对象进行初始调整和细致调整，并通过精确调整校准修正使调整对象调整后的值与所述调整目标值相一致。本发明实施例从硬软件方面使移动终端更加智能、便捷，在多种应用环境和用户体验下快速的实现WIFI功率可变式调整。

Description

一种自适应可控功率式 WIFI调整方法及装置
技术领域
本技术涉及无线通讯领域， 尤其涉及一种自适应可控功率式 WIFI调整 方法及装置。
背景技术
随着手机中 WIFI越来越广泛的应用，业界和用户对 WIFI的性能要求也 越来越高， 尤其是对 WIFI的多应用场景及条件的适应性， 部分运营商有着 自己通过的准则。 WIFI性能的好坏是高端手机非常重要的指标，影响整机的 性能， 决定着产品的成与败。
目前， 手机中 WIFI的功率控制方式过于单一， 一般是以额定的功率固 定发射， 或者以一定的占空比间接发射， 在这种常发常收的传输方式上， 功 率持续发射会对手机的功耗带来很大的挑战， 同时， 长时间大功率发射会对 人体产生一定的辐射， 如何设计一个能够根据 WIFI信号强弱,手机 WIFI吞 吐量需求，用户个性需求来自适应性步进调节 WIFI的功率控制，是目前 WIFI 没有解决的问题。 同时， 由于 WIFI芯片内置 PA ( Power Amplifier, 功率放大器） 的不稳 定性，最大输出功率波动一般在正负 3DB左右，峰值功率波动在 5DB左右， 最大峰值功率可以达到 24DB,功率输出的稳定性有很大的随机性， 需要可控 方法对实际用户功率做针对性调整。 其次， 由于单板器件和匹配的差异， WIFI校准的差异， 无法改变不同板 厂及批次的单板 WIFI性能的一致性要求。不同手机的 WIFI目标发射功率可 能差异很大， 如何自我调节， 达到安全稳定的工作功率， 对每个手机的生产 和校准也是一个挑战， 即使对每个终端的 WIFI做详细的校准和检测， 也不 能保证到用户手机的功率是精确可控的。 而且， 由于手机多媒体功能越来越多， 终端供电电池的有限， WIFI长时 间在恒定大功率下工作， 手机使用时间会大大缩短， 功耗会快速增大， 终端 会严重发热， 由于手机芯片温度升高， 导致时钟频率漂移增大， WIFI连接终 端的稳定性和传输速率会受到影响。 在 WIFI的实际使用中， 不同信道和速率之间功率也会有差别， 而功率 大 d、会直接影响发射性能中的关键因素 EVM ( error vector magnitude , 矢量 幅度误差）， EVM性能较差的手机的调制解调性能就会受到影响， 进而影响 WIFI的信道质量和下载速率。
当前， 手机 WIFI功率调节电路有如下几种： 1.内部校准控制调节。 2. 外部耦合反馈调节控制。 3.直接输出无功率控制。 上述功率调节的结果是 WIFI功率在校准后， 在信令模式下以恒定功率调用输出， 功率是不可变的， 精度差， 不同厂家寄生电容， 匹配也不一致， 不利于单个调节， 不具备自适 应精确调节能力。
发明内容
本文发明了一种新型的自适应可控功率式 WIFI调整方法及装置。 本发明的目的在于提供一种自适应可控功率式 WIFI调整方法解决了现 有技术中手机 WIFI的功率控制方式单一， 且在各种应用环境， 通讯状态及 个性化需求下不能使手机 WIFI始终处于最佳工作状态的问题。
根据本发明的一个方面，提供了一种自适应可控功率式 WIFI调整方法， 包括适用于 WIFI移动终端执行的以下步骤：
通过侦测当前 WIFI的应用环境和 /或通讯状态， 确定 WIFI的调整对象 及调整目标值；
通过对 WIFI的调整对象进行检测， 得到 WIFI调整对象的当前值； 将所述调整目标值与当前值进行比较， 并将比较结果进行耦合反馈； 根据所述耦合反馈的比较结果， 对所述 WIFI的调整对象进行初始调整 和细致调整， 并通过精确调整校准修正使调整对象调整后的值与所述调整目 标值相一致。
优选地， 所述侦测当前 WIFI的应用环境和 /或通讯状态包括无线配置信 息状态、 应用场景状态、 信号强度状态以及用户交互配置状态。
优选地， 当侦测到当前 WIFI 的应用环境和 /或通讯状态是信号强度状态 时， 将所述调整对象确定为发射功率调整。
优选地， 当侦测到当前 WIFI 的应用环境和 /或通讯状态是无线配置信息 状态、 应用场景状态以及用户交互配置状态时， 将所述调整对象确定为输出 功率调整。
优选地， 所述通过对 WIFI的调整对象进行检测， 得到 WIFI调整对象的 当前值之前的步骤还包括：
根据所述确定 WIFI的调整对象及调整目标值，对 WIFI调整对象值进行 自适应调整。
优选地， 所述根据耦合反馈的比较结果， 对所述 WIFI的调整对象进行 初始调整和细致调整的步骤包括：
根据所述耦合反馈的比较结果，对所述 WIFI的调整对象进行初始调整， 得出所述当前值的调整方向和功率控制模式；
根据所述调整方向和功率控制模式，对 WIFI的调整对象进行细致调整； 其中， 所述功率控制模式包括功率模拟可调控制模式和功率数字可调控 制模式。
优选地， 所述通过精确调整校准修正使调整对象调整后的值与所述调整 目标值相一致的步骤包括：
将 WIFI调整对象细致调整后的当前值进行精确调整校准修正， 并将其 与所述调整目标值进行比较， 获得比较结果； 若比较结果不一致， 则根据经验模型参数， 得出调整对象调整线路和调 整幅度进行电压信号控制调整， 使其调整对象调整后的值与所述调整目标值 相一致。
根据本发明的另一方面，提供了一种自适应可控功率式 WIFI调整装置， 包括设置在适用于 WIFI移动终端中的以下模块：
确定模块， 设置为： 通过侦测当前 WIFI的应用环境和 /或通讯状态， 确 定 WIFI的调整对象及调整目标值；
获取模块， 设置为： 通过对 WIFI的调整对象进行检测， 得到 WIFI调整 对象的当前值；
比较模块， 设置为： 将所述调整目标值与当前值进行比较， 并将比较结 果进行耦合反馈；
调整模块， 设置为： 根据所述耦合反馈的比较结果， 对所述 WIFI的调 整对象进行初始调整和细致调整， 并通过精确调整校准修正使调整对象调整 后的值与所述调整目标值相一致。
优选地， 还包括：
预调整模块， 设置为： 根据所述确定 WIFI的调整对象及调整目标值， 对 WIFI调整对象值进行自适应调整。
优选地， 所述调整模块包括：
第一调整单元， 设置为： 根据所述耦合反馈的比较结果， 对所述 WIFI 的调整对象进行初始调整， 得出所述当前值的调整方向和功率控制模式， 并 根据所述调整方向和功率控制模式， 对 WIFI的调整对象进行细致调整； 第二调整单元， 设置为： 将 WIFI调整对象细致调整后的当前值进行精 确调整校准修正， 并将其与所述调整目标值进行比较， 获得比较结果， 当比 较结果不一致时， 则根据经验模型参数， 得出调整对象调整线路和调整幅度 进行电压信号控制调整，使其调整对象调整后的值与所述调整目标值相一致； 其中， 所述功率控制模式包括功率模拟可调控制模式和功率数字可调控 制模式。
与相关技术相比较， 本发明的有益效果在于：
1、 本发明实施例不同于单一固定的功率输出模式， 而是充分考虑手机 WIFI多种应用状态差异化控制， 使手机 WIFI传输质量及性能达到最优；
2、本发明实施例不局限于单种负载模式的简单可调， 而是优化算法的基 础上实现动态可调， 让功率控制和校准有机匹配；
3、本发明实施例充分利用手机内部电路和软件， 釆用数模可调技术， 自 适应反馈耦合校准设计， 可调方式科学合理， 智能实用；
4、本发明实施例充分考虑手机 WIFI应用状态，结合用户对高信号质量， 低辐射， 低功耗， 及高抗干扰度的需求， 时刻将 WIFI的发射功率调整到最 佳状态， 让无线连接更加顺畅快捷。
附图概述
图 1是本发明实施例提供的一种自适应可控功率式 WIFI调整方法的流 程图；
图 2是本发明实施例提供的一种自适应可控功率式 WIFI调整装置的示 意图；
图 3是本发明实例提供的一种自适应可控功率式 WIFI移动终端的结构 图；
图 4是本发明实例提供的一种自适应式 WIFI可控功率电路的工作流程 图。
本发明的较佳实施方式
以下结合附图对本发明的优选实施例进行详细说明， 应当理解， 以下所 说明的优选实施例仅用于说明和解释本发明， 并不用于限定本发明。 图 1显示了本发明提供的一种自适应可控功率式 WIFI调整方法的流程 图， 如图 1所示， 包括适用于 WIFI移动终端执行的以下步骤：
步骤 S101： 通过侦测当前 WIFI的应用环境和 /或通讯状态， 确定 WIFI 的调整对象及调整目标值；
步骤 S102: 通过对 WIFI的调整对象进行检测， 得到 WIFI调整对象的 当前值；
步骤 S103: 将所述调整目标值与当前值进行比较， 并将比较结果进行耦 合反馈；
步骤 S104: 根据所述耦合反馈的比较结果， 对所述 WIFI的调整对象进 行初始调整和细致调整， 并通过精确调整校准修正使调整对象调整后的值与 所述调整目标值相一致。
所述侦测当前 WIFI的应用环境和 /或通讯状态包括无线配置信息状态、 应用场景状态、 信号强度状态以及用户交互配置状态， 其中， 当侦测到当前 WIFI 的应用环境和 /或通讯状态是信号强度状态时， 将所述调整对象确定为 发射功率调整； 当侦测到当前 WIFI 的应用环境和 /或通讯状态是无线配置信 息状态、 应用场景状态以及用户交互配置状态时， 将所述调整对象确定为输 出功率调整。
其中， 所述输出功率调整包括峰值及最大平均功率值和波动误差及均方 值。
本发明实施例所述通过对 WIFI的调整对象进行检测，得到 WIFI调整对 象的当前值之前的步骤还包括： 根据所述确定 WIFI的调整对象及调整目标 值， 对 WIFI调整对象值进行自适应调整。
本发明实施例所述根据耦合反馈的比较结果， 对所述 WIFI的调整对象 进行初始调整和细致调整的步骤包括： 根据所述耦合反馈的比较结果， 对所 述 WIFI的调整对象进行初始调整， 得出所述当前值的调整方向和功率控制 模式； 根据所述调整方向和功率控制模式， 对 WIFI的调整对象进行细致调 整； 其中， 所述功率控制模式包括功率模拟可调控制模式和功率数字可调控 制模式。
本发明实施例所述通过精确调整校准修正使调整对象调整后的值与所述 调整目标值相一致的步骤包括： 将 WIFI调整对象细致调整后的当前值进行 精确调整校准修正， 并将其与所述调整目标值进行比较， 获得比较结果； 若 比较结果不一致， 则根据经验模型参数， 得出调整对象调整线路和调整幅度 进行电压信号控制调整，使其调整对象调整后的值与所述调整目标值相一致。
图 2显示了本发明提供的一种自适应可控功率式 WIFI调整装置的示意 图， 如图 2所示， 包括设置在适用于 WIFI移动终端中的以下模块：
确定模块 201 , 用于通过侦测当前 WIFI的应用环境和 /或通讯状态， 确 定 WIFI的调整对象及调整目标值； 获取模块 202, 用于通过对 WIFI的调整 对象进行检测， 得到 WIFI调整对象的当前值； 比较模块 203 , 用于将所述调 整目标值与当前值进行比较， 并将比较结果进行耦合反馈； 调整模块 204, 用于根据所述耦合反馈的比较结果， 对所述 WIFI的调整对象进行初始调整 和细致调整， 并通过精确调整校准修正使调整对象调整后的值与所述调整目 标值相一致。
本发明还包括： 预调整模块， 用于根据所述确定 WIFI的调整对象及调 整目标值， 对 WIFI调整对象值进行自适应调整。
其中， 所述调整模块 204包括： 第一调整单元 2041 , 用于根据所述耦合 反馈的比较结果， 对所述 WIFI的调整对象进行初始调整， 得出所述当前值 的调整方向和功率控制模式， 并根据所述调整方向和功率控制模式，对 WIFI 的调整对象进行细致调整； 第二调整单元 2042 , 用于将 WIFI调整对象细致 调整后的当前值进行精确调整校准修正，并将其与所述调整目标值进行比较， 获得比较结果， 当比较结果不一致时， 则根据经验模型参数， 得出调整对象 调整线路和调整幅度进行电压信号控制调整， 使其调整对象调整后的值与所 述调整目标值相一致； 其中， 所述功率控制模式包括功率模拟可调控制模式 和功率数字可调控制模式。
图 3显示了本发明实例提供的一种自适应可控功率式 WIFI移动终端的 结构图， 如图 3所示， 该 WIFI性能可调的移动终端包括功率自适应控制模 块 11、 功率数字可调模块 12、 功率模拟可调模块 13、 精确自校准模块 14、 反馈釆样模块 15、 无线模式检测模块 16、 应用场景检测模块 17、 信号强度侦 测模块 18、 用户交互模块 19以及手机自身的手机 EPPROM模块 110、 WIFI 芯片模块 111、 射频前端模块 112。
功率自适应控制模块 11 , 与各应用侦测模块 16-19及功率数字模拟可调 模块 12-13相连， 用于对不同的 WIFI调节状态做不同的反馈调整响应控制。 该模块的控制端为各应用侦测模块 16-19的输出信号，输出端为功率数字模拟 可调模块 12-13的输入调整信号，调整功率幅度根据反馈值计算比较得出，在 功率自适应控制模块 11内含有一组数字电压对应表，输出控制电压值根据反 馈结果做出自适应电压信号输出调整， 直到完成最终完全匹配。
功率数字可调模块 12,与功率自适应控制模块 11及手机 EPPROM模块 110相连，用于针对不同的应用场景， 实现不同需求下的 WIFI输出功率值的 数字式调用及调节。
功率数字可调模块 12由非信令可调模块和信令可调模块两部分组成， 非信令可调模块釆用开环功率控制法来调节，在该模块启动后，先进行 WIFI 芯片模块 111的初始化加载，初始化完成后按照功率自适应控制模块 11的输 入指令控制芯片发射一段功率，反馈釆集模块 15釆集接收到的功率并反馈给 功率自适应控制模块 11进行实时修正。非信令可调模块内置一组步进调节数 组， 每个步进可以是 0.5-1DB, 用户可以自行配置设定， 数组参数内含目标 功率调节值， 通过改变目标功率调节值变化， 改变手机实际发射功率值。 信令可调模块首先预存一个功率和调节指令表， 在 win的信令工作模 式触发之后， 在时钟节拍的频率下， 通过调用指令参数改变信令连接下的功 率值。根据信号强度质量自行调节，调节方法需要釆用查表修正的方式实现， 在每次修正指令参数内的数值后，反馈釆样模块 15进行实时釆样，如果调节 值和实际釆集值有差异，通过调用精确自校准模块 14进行重新校准修正，直 到信令下参数值达到目标值匹配时为止。
功率模拟可调模块 13,与功率自适应控制模块 11相连，用于 WIFI输出功 率值的模拟式调节控制， 实现功率的模拟可变式输出控制。 该模块通过可变 式衰减电路，通过一定模型计算，在中心频率处实现 50欧姆特性阻抗的定值 调整， 调整范围在正负 10DB左右， 基本覆盖 WIFI功率的最大和最小功率 需求值。 可变式衰减电路可以通过可变电阻器实现， 也可以通过多路开关加 定值电阻阵列实现。功率模拟可调模块 13接收到调节指令和具体值后，查收 阻抗实现模型， 在阻抗实现模型的计算下， 得出最优的衰减电路值， 然后开 始模拟调节，调节后通过反馈釆集模块 15实时检测修正，直到调节到目标功 率值为止。
精确自校准模块 14, 与手机 EPPROM模块 110和反馈釆集模块 15相连， 用于 WIFI芯片模块 111 P A输出功率的线性高精度自校准和输出。 首先实现 功率输出精度的精确修正， 让输出功率稳定和平坦， 同时辅助功率数字模拟 可调模块 12-13功率调整的准确性， 因为每次功率调整后， 手机内参数都会变 化， 需要进行一定的校准后， 修正原来存储的原值， 手机调用的功率才会精 确无误。精确自校准模块 14通过发射功率的在一定范围内如 8-24DB的步进 控制输出线性化测试和理论功率步进线性化曲线拟合， 通过曲线拟合结果进 行针对性功率控制参数调整，将校准结果重新写入手机 EEPROM110内存中， 进行实时调用。
反馈釆样模块 15, 与射频前端模块 112、 功率自适应控制模块 11及精确 自校准模块 14相连，用于釆样测量当前功率输出值，将釆样结果反馈到功率 自适应控制模块 11和 WIFI芯片模块 111 , 实现功率输出的实时反馈釆样耦 合。 在实际工作中， 用于釆样测量输出功率当前值， 耦合到功率自适应控制 模块 11比较端， 实现反馈控制。 釆样信号可以是以下两种信号： 第一种是电 压值信号， 通过变压管实现模数转换， 将变化后的功率电压值传输到反馈检 测电路中，进而到功率自适应控制模块 11实现比较控制； 第二种是耦合功率 值， 釆样一部分 PA输出功率， 耦合到工作点功率自适应控制模块 11中进行 比较计算， 判断当前功率增大或者减小趋势， 然后根据变化趋势进行功率值 方向调整。
无线模式检测模块 16, 与功率自适应控制模块 11相连， 用于侦测当前手 机的信道， 速率， 协议， 码流等无线配置信息状态， 针对不同配置状态做偏 移调整， 调整结果传输给功率自适应控制模块 11 , 实现不同调整模式。
在 WIFI首次开启阶段， 首先启动信道扫描机制， 通过探测高、 中、 低 三个信道（2412MHz//2437 MHz//2472 MHz ) 的功率误差偏移值， 对超出功 率目标范围的信道频率做微调， 微调结果写入相应的功率参数寄存器， 在以 后的使用中， 先调用此寄存器中的校准参数， 作为初始参考功率。 在连接到 某固定 AP后，通过功率釆样器实时监测连接信道的功率误差和 EVM误差值， 和目标参考值相比较， 如果发生偏移， 无线信号侦测模块反馈信号给功率自 适应控制模块 11 , 反馈调整到既定状态。 其他无线信号检测调整如传输速率 (如 1M/11M/54M/72M/433M )调整， 无线传输协议调整（ 802.1 lb/g/n/a/ac ) , 频段带宽调整（如 20MHZ/40MHZ/80MHZ/160MHZ ) , 天线 MIMO及码流 调整方法如上信道调整方法相似。
应用场景检测模块 17, 与功率自适应控制模块 11相连， 用于实时侦测 手机 WIFI 当前所处状态及用户需求状态。 通过多路选择开关实现， 输入信 号为各传感器的输出使能信号， 输出信号为自适应控制使能信号。 如手机当 前环境状态，若是空旷无阻碍空间，则应用场景侦测模块 17会检测到输入信 号为 S1有效的高电平信号， 若有强有阻碍控制， 则输入信号是 SO有效的低 电平信号； 若是节能省电模式， 则都是 T1 有效的高电平信号， 若是最强信 号模式， 则是 TO有效的低电平信号， 同样的， 对于高清显示应用 DISPLAY 或者高速 P2P(peer-to-peer, 群对群技术 )传输应用， 该应用场景检测模块 17 也会做出瞬时的侦测， 并发出控制信号给功率自适应控制模块 11 , 做出实时 功率输出调整。
信号强度侦测模块 18,与 WIFI芯片模块 111中的 WIFI基带处理电路及 功率自适应控制电路 11相连， 用于实时检测当前 WIFI接收信号强度， 以及 信号强度波动稳定性， 对信号强度的稳定性反复检测， 以便功率误差变大时 实时调整， 增强无线连接的稳定性及高效性。 当手机工作在弱信号条件或多 径衰减比较严重的情况下， WIFI的接收灵敏度会急剧下降， 而精准的功率和 调制性能， 可以大大提高 IQ信号的解调能力， 让 EVM失真降到最低。 通过 基带实时釆样 WIFI反馈的 RSSI( Received Signal Strength Indication, 接收的 信号强度指示)信号， 当信号减弱时， 系统自动提高参考功率精度， 减小频率 误差， 增强信号强度。
用户交互模块 19, 与功率自适应控制模块 11相连， 用于用户对不同人群 需求、 语音或数据传输吞吐性能需求、 低 SAR( Specific Absorption Rate, 电 磁波吸收比值)低辐射需求或高效功率模式需求等应用做交互选择，手机根据 不同需求完成功率输出调整。 如用户要求低 SAR环保模式， 则 PA的输出功 率可适当降低； 如果用户感觉上网速度太差， 则可以要求 PA的输出功率适 当调整， 提高信道质量， 功率可向最佳功率点靠近；
手机 EPPROM模块 110, 与 WIFI芯片模块 111和精确自校准模块 14相 连， 实现功率校准数据的存储。
WIFI芯片模块 111 ,与功率自适应控制模块 11相连，用于侦测手机 WIFI 当前信号幅度 RSSI。 RSSI可以考察 WIFI, 即将射频前端模块 112和 WIFI 天线作为一个整体， 考虑天线到射频前端模块 112的匹配性能， 基带判定芯 片接收链路质量， 信号强度及其稳定性， 通过信号幅度强弱对 WIFI时钟匹 配进行自校准，校准结果通过功率自适应控制模块 11进行负载调整控制。 当 WIFI信号较弱时，检测当前功率误差及其稳定度，将其调节到目标值误差最 小范围。
射频前端模块 112, 与手机内 WIFI天线和 WIFI芯片模块 111相连， 实 现芯片输出到天线的电路滤波， 阻抗匹配。
图 4显示了本发明自适应功率可控式的 WIFI移动终端的工作流程图， 如图 4所示， 本发明移动终端的方法包括以下步骤：
步骤 401 : 手机在 WIFI开启后自动打开功率自适应控制模块，各状态感 应和釆样监测模块被激活；
步骤 402:；手机通过无线模式侦测当前手机所处的无线配置信息状态， 应用场景状态， 信号强度状态， 用户交换配置状态；
步骤 403: 手机进入非信令模式， 手机以某一目标功率为参考值以固定 功率常发射， 反馈釆样模块釆集 WIFI初始时功率值及波动误差；
步骤 404: 反馈釆样模块将釆样结果反馈给功率自适应控制模块， 实现 功率输出的实时反馈釆样耦合， 将实际釆样测量值和目标值比较， 比较结果 反馈到功率自适应控制模块， 实现闭环反馈控制调节；
步骤 405: 功率自适应控制模块根据当前状态输出调整信号， 根据目标 功率选择调整方向和功率控制模式， 对 WIFI输出功率进行预调整， 使其工 作在正确的功率范围内；
步骤 406: 功率数字或模拟可调模块根据调整信号和步进选择合理的调 理模式， 对输出功率值进行调整；
步骤 407: 精确校准模块对芯片调整前后输出功率进行的精确校准， 让 各信道功率输出稳定而平坦， 同时辅助修正数字模拟可调模块功率调整的准 确性；
步骤 408: 反馈釆样模块进行功率重新釆样， 如果实际功率值和目标功 率值不匹配或稳定系数太低， 表明调整模式或者参数失配， 功率自适应控制 模块根据经验模型参数得出功率调整线路和调整幅度， 将其反馈到数模可控 功率模块， 进行电压信号控制输出；
步骤 409: 如果接收功率调制到目标功率值范围， 功率自适用控制模块 根据各反馈模块对功率输出进行细调控制， 直到达到完全目标点， 一轮调节 完成后， 自适应控制模块实时接收来自四个检测模块传来的动态信息， 准备 下一轮自适应调整。
尽管上文对本发明进行了详细说明， 但是本发明不限于此， 本技术领域 技术人员可以根据本发明的原理进行各种修改。 因此， 凡按照本发明原理所 作的修改， 都应当理解为落入本发明的保护范围。
工业实用 4生
综上所述， 本发明实施例具有以下技术效果：
本发明实施例通过功率自适应控制模块， 让手机的 WIFI发射性能可以 根据需要和性能自适应式调节， 使移动终端 WIFI在多种应用环境及条件下 的功率性能的自调整， 保证手机 WIFI随时以最优性能工作， 上传下载吞吐 量达到最高， 外界影响和人体安全辐射降到最低。

Claims

权 利 要 求 书
1、 一种自适应可控功率式 WIFI调整方法， 包括适用于 WIFI移动终端 执行的以下步骤：
通过侦测当前 WIFI的应用环境和 /或通讯状态， 确定 WIFI的调整对象 及调整目标值；
通过对 WIFI的调整对象进行检测， 得到 WIFI调整对象的当前值； 将所述调整目标值与当前值进行比较， 并将比较结果进行耦合反馈； 根据所述耦合反馈的比较结果， 对所述 WIFI的调整对象进行初始调整 和细致调整， 并通过精确调整校准修正使调整对象调整后的值与所述调整目 标值相一致。
2、 根据权利要求 1所述的方法， 其中， 所述侦测当前 WIFI的应用环境 和 /或通讯状态包括无线配置信息状态、 应用场景状态、 信号强度状态以及用 户交互配置状态。
3、根据权利要求 2所述的方法， 其中， 当侦测到当前 WIFI 的应用环境 和 /或通讯状态是信号强度状态时， 将所述调整对象确定为发射功率调整。
4、根据权利要求 2所述的方法， 其中， 当侦测到当前 WIFI 的应用环境 和 /或通讯状态是无线配置信息状态、应用场景状态以及用户交互配置状态时, 将所述调整对象确定为输出功率调整。
5、 根据权利要求 1所述的方法， 其中， 所述通过对 WIFI的调整对象进 行检测， 得到 WIFI调整对象的当前值之前的步骤还包括：
根据所述确定 WIFI的调整对象及调整目标值，对 WIFI调整对象值进行 自适应调整。
6、 根据权利要求 1所述的方法， 其中， 所述根据耦合反馈的比较结果， 对所述 WIFI的调整对象进行初始调整和细致调整的步骤包括：
根据所述耦合反馈的比较结果，对所述 WIFI的调整对象进行初始调整， 得出所述当前值的调整方向和功率控制模式；
根据所述调整方向和功率控制模式，对 WIFI的调整对象进行细致调整； 其中， 所述功率控制模式包括功率模拟可调控制模式和功率数字可调控 制模式。
7、根据权利要求 1所述的方法， 其中， 所述通过精确调整校准修正使调 整对象调整后的值与所述调整目标值相一致的步骤包括：
将 WIFI调整对象细致调整后的当前值进行精确调整校准修正， 并将其 与所述调整目标值进行比较， 获得比较结果；
若比较结果不一致， 则根据经验模型参数， 得出调整对象调整线路和调 整幅度进行电压信号控制调整， 使其调整对象调整后的值与所述调整目标值 相一致。
8、 一种自适应可控功率式 WIFI调整装置， 包括设置在适用于 WIFI移 动终端中的以下模块：
确定模块， 设置为： 通过侦测当前 WIFI的应用环境和 /或通讯状态， 确 定 WIFI的调整对象及调整目标值；
获取模块， 设置为： 通过对 WIFI的调整对象进行检测， 得到 WIFI调整 对象的当前值；
比较模块， 设置为： 将所述调整目标值与当前值进行比较， 并将比较结 果进行耦合反馈；
调整模块， 设置为： 根据所述耦合反馈的比较结果， 对所述 WIFI的调 整对象进行初始调整和细致调整， 并通过精确调整校准修正使调整对象调整 后的值与所述调整目标值相一致。
9、 根据权利要求 8所述的装置， 其中， 还包括：
预调整模块， 设置为： 根据所述确定 WIFI的调整对象及调整目标值， 对 WIFI调整对象值进行自适应调整。
10、 根据权利要求 8所述的装置， 其中， 所述调整模块包括：
第一调整单元， 设置为： 根据所述耦合反馈的比较结果， 对所述 WIFI 的调整对象进行初始调整， 得出所述当前值的调整方向和功率控制模式， 并 根据所述调整方向和功率控制模式， 对 WIFI的调整对象进行细致调整； 第二调整单元， 设置为： 将 WIFI调整对象细致调整后的当前值进行精 确调整校准修正， 并将其与所述调整目标值进行比较， 获得比较结果， 当比 较结果不一致时， 则根据经验模型参数， 得出调整对象调整线路和调整幅度 进行电压信号控制调整，使其调整对象调整后的值与所述调整目标值相一致； 其中， 所述功率控制模式包括功率模拟可调控制模式和功率数字可调控 制模式。
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