CN106569539B - A kind of method and device, the terminal of bias voltage compensation - Google Patents
A kind of method and device, the terminal of bias voltage compensation Download PDFInfo
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Abstract
The embodiment of the invention discloses a kind of method of bias voltage compensation, including：The adjacent channel leakage for obtaining each channel compares ACLRiWith the ACLR of reference channelrDifference, according to the ACLR of each channeliWith the ACLR of the reference channelrDifference, obtain the PA bias voltages of each channel and the VCCrDifference；During signaling work, PA bias voltages and the VCC using respective channelsrDifference be biased voltage compensation.This programme can compensate APT the or ET bias voltages of each channel according to the ACLR performances of the channel measured.
Description
Technical Field
The present invention relates to communications technologies, and in particular, to a method and an apparatus for compensating for bias voltage, and a terminal.
Background
The high-pass platform generally adopts APT (Average Power Tracking) and ET (envelope Tracking) technologies to improve the working efficiency of a radio frequency Power Amplifier (PA), so as to achieve the purpose of saving Power compared with the technology of adopting a fixed supply voltage of the PA.
Characterization calibration of the PA is required using APT and ET techniques. At present, APT and ET perform characterizing calibration on only one reference channel, so as to obtain a characterization table of RGI (Radio Gain Index) and VCC (voltage supply) bias voltage of the channel, and other channels use the same characterization table as the reference channel. The use of a reference channel for the APT and ET characterization tables necessarily results in certain cases where the channel bias voltage VCC is higher or lower due to different channel frequency responses. The PA bias voltage VCC is higher, and the power saving effect is reduced; PA bias voltage is low, and the ACLR (Adjacent Channel Leakage Ratio) performance of radio frequency deteriorates, and cannot meet the ACLR index requirement.
Disclosure of Invention
In order to solve the above technical problem, the present invention provides a method, an apparatus, and a terminal for compensating a bias voltage, so as to compensate a bias voltage of each channel.
A method of bias voltage compensation, comprising:
obtaining adjacent channel leakage ratio ACLR of each channeliACLR with reference channelrWherein i is an integer of 1 to n, and r is any integer of 1 to n;
according to the ACLR of each channeliWith said reference letterACLR of the tractrObtaining the power amplifier PA bias voltage of each channel and the designated VCC in the radio gain index RGI and PA bias voltage VCC characterization table of the reference channelrA difference of (d);
when the signaling works, the PA bias voltage of the corresponding channel and the VCC are utilizedrThe difference value of (a) is compensated for the bias voltage.
Optionally, the ACLR of each channeliIs through a specified RGI in the radio gain index RGI and PA bias voltage VCC characterization table for the reference channelrValue sum VCCrThe values are measured, and the RGI and VCC characterization table of the reference channel is obtained by performing characterization calibration of average power tracking or envelope tracking on the reference channel.
Optionally, the ACLR according to each channeliACLR with the reference channelrObtaining the PA bias voltage of each channel and the VCCrDifference of (delta) VCCiThe method is realized by the following steps:
δVCCi＝(ACLRi-ACLRr) x/dB, wherein x is a specified voltage value in-1V.
Optionally, the PA bias voltage and the VCC of each channel are obtainedrAfter the difference, further comprising:
obtaining the PA bias voltage of each channel and the VCCrAnd storing the corresponding relation table of the difference value and the corresponding channel.
An apparatus for bias voltage compensation, comprising:
a first obtaining module for obtaining adjacent channel leakage ratio ACLR of each channeliACLR with reference channelrWherein i is an integer of 1 to n, and r is any integer of 1 to n;
a second obtaining module for obtaining ACLR according to each channeliAnd the placeACLR of the reference channelrObtaining the power amplifier PA bias voltage of each channel and the designated VCC in the radio gain index RGI and PA bias voltage VCC characterization table of the reference channelrA difference of (d);
a compensation module for utilizing PA bias voltage of corresponding channel and VCC when signaling worksrThe difference value of (a) is compensated for the bias voltage.
Optionally, the ACLR of each channeliIs through a specified RGI in the radio gain index RGI and PA bias voltage VCC characterization table for the reference channelrValue sum VCCrThe values are measured, and the RGI and VCC characterization table of the reference channel is obtained by performing characterization calibration of average power tracking or envelope tracking on the reference channel.
Optionally, the second obtaining module obtains PA bias voltages of the channels and the VCCrDifference of (delta) VCCiThe method is realized by the following steps: delta VCCi＝(ACLRi-ACLRr) x/dB, wherein x is a specified voltage value in-1V.
Optionally, the apparatus further comprises a display device,
a storage module for obtaining the PA bias voltage of each channel and the VCCrAnd storing the corresponding relation table of the difference value and the corresponding channel.
A terminal comprises the bias voltage compensation device.
In summary, the present invention provides a method, an apparatus, and a terminal for compensating an offset voltage, which can compensate an APT or ET offset voltage of each channel according to a measured ACLR performance of the channel, so that the offset voltage of each channel is in an optimal APT or ET operating state, and finally, an optimal combination of the ACLR performance and power saving is achieved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic diagram of a hardware structure of a mobile terminal implementing various embodiments of the present invention;
FIG. 2 is a diagram of a wireless communication system for the mobile terminal shown in FIG. 1;
FIG. 3 is a flowchart of a method for compensating a bias voltage according to a first embodiment of the present invention;
FIG. 4 is a flowchart of a method for compensating a bias voltage according to a second embodiment of the present invention;
FIG. 5 is a diagram illustrating an apparatus for offset voltage compensation according to a third embodiment of the present invention;
fig. 6 is a schematic diagram of an apparatus for offset voltage compensation according to a fourth embodiment of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A mobile terminal implementing various embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
The mobile terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a navigation device, and the like, and a stationary terminal such as a digital TV, a desktop computer, and the like. In the following, it is assumed that the terminal is a mobile terminal. However, it will be understood by those skilled in the art that the configuration according to the embodiment of the present invention can be applied to a fixed type terminal in addition to elements particularly used for moving purposes.
Fig. 1 is a schematic hardware configuration of a mobile terminal implementing various embodiments of the present invention.
The mobile terminal 100 may include a wireless communication unit 110, an a/V (audio/video) input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, an interface unit 170, a controller 180, and a power supply unit 190, etc. Fig. 1 illustrates a mobile terminal having various components, but it is to be understood that not all illustrated components are required to be implemented. More or fewer components may alternatively be implemented. Elements of the mobile terminal will be described in detail below.
The wireless communication unit 110 typically includes one or more components that allow radio communication between the mobile terminal 100 and a wireless communication system or network. For example, the wireless communication unit may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless internet module 113, a short-range communication module 114, and a location information module 115.
The broadcast receiving module 111 receives a broadcast signal and/or broadcast associated information from an external broadcast management server via a broadcast channel. The broadcast channel may include a satellite channel and/or a terrestrial channel. The broadcast management server may be a server that generates and transmits a broadcast signal and/or broadcast associated information or a server that receives a previously generated broadcast signal and/or broadcast associated information and transmits it to a terminal. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and the like. Also, the broadcast signal may further include a broadcast signal combined with a TV or radio broadcast signal. The broadcast associated information may also be provided via a mobile communication network, and in this case, the broadcast associated information may be received by the mobile communication module 112. The broadcast signal may exist in various forms, for example, it may exist in the form of an Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB), an Electronic Service Guide (ESG) of digital video broadcasting-handheld (DVB-H), and the like. The broadcast receiving module 111 may receive a signal broadcast by using various types of broadcasting systems. In particular, the broadcast receiving module 111 may receive digital broadcasting by using a digital broadcasting system such as a data broadcasting system of multimedia broadcasting-terrestrial (DMB-T), digital multimedia broadcasting-satellite (DMB-S), digital video broadcasting-handheld (DVB-H), forward link media (MediaFLO @), terrestrial digital broadcasting integrated service (ISDB-T), and the like. The broadcast receiving module 111 may be constructed to be suitable for various broadcasting systems that provide broadcast signals as well as the above-mentioned digital broadcasting systems. The broadcast signal and/or broadcast associated information received via the broadcast receiving module 111 may be stored in the memory 160 (or other type of storage medium).
The mobile communication module 112 transmits and/or receives radio signals to and/or from at least one of a base station (e.g., access point, node B, etc.), an external terminal, and a server. Such radio signals may include voice call signals, video call signals, or various types of data transmitted and/or received according to text and/or multimedia messages.
The wireless internet module 113 supports wireless internet access of the mobile terminal. The module may be internally or externally coupled to the terminal. The wireless internet access technology to which the module relates may include WLAN (wireless LAN) (Wi-Fi), Wibro (wireless broadband), Wimax (worldwide interoperability for microwave access), HSDPA (high speed downlink packet access), and the like.
The short-range communication module 114 is a module for supporting short-range communication. Some examples of short-range communication technologies include bluetooth (TM), Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), zigbee (TM), and the like.
The location information module 115 is a module for checking or acquiring location information of the mobile terminal. A typical example of the location information module is a GPS (global positioning system). According to the current technology, the GPS module 115 calculates distance information and accurate time information from three or more satellites and applies triangulation to the calculated information, thereby accurately calculating three-dimensional current location information according to longitude, latitude, and altitude. Currently, a method for calculating position and time information uses three satellites and corrects an error of the calculated position and time information by using another satellite. In addition, the GPS module 115 can calculate speed information by continuously calculating current position information in real time.
The a/V input unit 120 is used to receive an audio or video signal. The a/V input unit 120 may include a camera 121 and a microphone 1220, and the camera 121 processes image data of still pictures or video obtained by an image capturing apparatus in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 151. The image frames processed by the camera 121 may be stored in the memory 160 (or other storage medium) or transmitted via the wireless communication unit 110, and two or more cameras 1210 may be provided according to the construction of the mobile terminal. The microphone 122 may receive sounds (audio data) via the microphone in a phone call mode, a recording mode, a voice recognition mode, or the like, and can process such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the mobile communication module 112 in case of a phone call mode. The microphone 122 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.
The user input unit 130 may generate key input data according to a command input by a user to control various operations of the mobile terminal. The user input unit 130 allows a user to input various types of information, and may include a keyboard, dome sheet, touch pad (e.g., a touch-sensitive member that detects changes in resistance, pressure, capacitance, and the like due to being touched), scroll wheel, joystick, and the like. In particular, when the touch pad is superimposed on the display unit 151 in the form of a layer, a touch screen may be formed.
The sensing unit 140 detects a current state of the mobile terminal 100 (e.g., an open or closed state of the mobile terminal 100), a position of the mobile terminal 100, presence or absence of contact (i.e., touch input) by a user with the mobile terminal 100, an orientation of the mobile terminal 100, acceleration or deceleration movement and direction of the mobile terminal 100, and the like, and generates a command or signal for controlling an operation of the mobile terminal 100. For example, when the mobile terminal 100 is implemented as a slide-type mobile phone, the sensing unit 140 may sense whether the slide-type phone is opened or closed. In addition, the sensing unit 140 can detect whether the power supply unit 190 supplies power or whether the interface unit 170 is coupled with an external device. The sensing unit 140 may include a proximity sensor 1410 as will be described below in connection with a touch screen.
The interface unit 170 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The identification module may store various information for authenticating a user using the mobile terminal 100 and may include a User Identity Module (UIM), a Subscriber Identity Module (SIM), a Universal Subscriber Identity Module (USIM), and the like. In addition, a device having an identification module (hereinafter, referred to as an "identification device") may take the form of a smart card, and thus, the identification device may be connected with the mobile terminal 100 via a port or other connection means. The interface unit 170 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal and the external device.
In addition, when the mobile terminal 100 is connected with an external cradle, the interface unit 170 may serve as a path through which power is supplied from the cradle to the mobile terminal 100 or may serve as a path through which various command signals input from the cradle are transmitted to the mobile terminal. Various command signals or power input from the cradle may be used as signals for recognizing whether the mobile terminal is accurately mounted on the cradle. The output unit 150 is configured to provide output signals (e.g., audio signals, video signals, alarm signals, vibration signals, etc.) in a visual, audio, and/or tactile manner. The output unit 150 may include a display unit 151, an audio output module 152, an alarm unit 153, and the like.
The display unit 151 may display information processed in the mobile terminal 100. For example, when the mobile terminal 100 is in a phone call mode, the display unit 151 may display a User Interface (UI) or a Graphical User Interface (GUI) related to a call or other communication (e.g., text messaging, multimedia file downloading, etc.). When the mobile terminal 100 is in a video call mode or an image capturing mode, the display unit 151 may display a captured image and/or a received image, a UI or GUI showing a video or an image and related functions, and the like.
Meanwhile, when the display unit 151 and the touch pad are overlapped with each other in the form of a layer to form a touch screen, the display unit 151 may serve as an input device and an output device. The display unit 151 may include at least one of a Liquid Crystal Display (LCD), a thin film transistor LCD (TFT-LCD), an Organic Light Emitting Diode (OLED) display, a flexible display, a three-dimensional (3D) display, and the like. Some of these displays may be configured to be transparent to allow a user to view from the outside, which may be referred to as transparent displays, and a typical transparent display may be, for example, a TOLED (transparent organic light emitting diode) display or the like. Depending on the particular desired implementation, the mobile terminal 100 may include two or more display units (or other display devices), for example, the mobile terminal may include an external display unit (not shown) and an internal display unit (not shown). The touch screen may be used to detect a touch input pressure as well as a touch input position and a touch input area.
The audio output module 152 may convert audio data received by the wireless communication unit 110 or stored in the memory 160 into an audio signal and output as sound when the mobile terminal is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output module 152 may provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output module 152 may include a speaker, a buzzer, and the like.
The alarm unit 153 may provide an output to notify the mobile terminal 100 of the occurrence of an event. Typical events may include call reception, message reception, key signal input, touch input, and the like. In addition to audio or video output, the alarm unit 153 may provide output in different ways to notify the occurrence of an event. For example, the alarm unit 153 may provide an output in the form of vibration, and when a call, a message, or some other incoming communication (incomingmunication) is received, the alarm unit 153 may provide a tactile output (i.e., vibration) to inform the user thereof. By providing such a tactile output, the user can recognize the occurrence of various events even when the user's mobile phone is in the user's pocket. The alarm unit 153 may also provide an output notifying the occurrence of an event via the display unit 151 or the audio output module 152.
The memory 160 may store software programs and the like for processing and controlling operations performed by the controller 180, or may temporarily store data (e.g., a phonebook, messages, still images, videos, and the like) that has been or will be output. Also, the memory 160 may store data regarding various ways of vibration and audio signals output when a touch is applied to the touch screen.
The memory 160 may include at least one type of storage medium including a flash memory, a hard disk, a multimedia card, a card-type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, an optical disk, and the like. Also, the mobile terminal 100 may cooperate with a network storage device that performs a storage function of the memory 160 through a network connection.
The controller 180 generally controls the overall operation of the mobile terminal. For example, the controller 180 performs control and processing related to voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia module 1810 for reproducing (or playing back) multimedia data, and the multimedia module 1810 may be constructed within the controller 180 or may be constructed separately from the controller 180. The controller 180 may perform a pattern recognition process to recognize a handwriting input or a picture drawing input performed on the touch screen as a character or an image.
The power supply unit 190 receives external power or internal power and provides appropriate power required to operate various elements and components under the control of the controller 180.
The various embodiments described herein may be implemented in a computer-readable medium using, for example, computer software, hardware, or any combination thereof. For a hardware implementation, the embodiments described herein may be implemented using at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a processor, a controller, a microcontroller, a microprocessor, an electronic unit designed to perform the functions described herein, and in some cases, such embodiments may be implemented in the controller 180. For a software implementation, the implementation such as a process or a function may be implemented with a separate software module that allows performing at least one function or operation. The software codes may be implemented by software applications (or programs) written in any suitable programming language, which may be stored in the memory 160 and executed by the controller 180.
Up to this point, mobile terminals have been described in terms of their functionality. Hereinafter, a slide-type mobile terminal among various types of mobile terminals, such as a folder-type, bar-type, swing-type, slide-type mobile terminal, and the like, will be described as an example for the sake of brevity. Accordingly, the present invention can be applied to any type of mobile terminal, and is not limited to a slide type mobile terminal.
The mobile terminal 100 as shown in fig. 1 may be configured to operate with communication systems such as wired and wireless communication systems and satellite-based communication systems that transmit data via frames or packets.
A communication system in which a mobile terminal according to the present invention is operable will now be described with reference to fig. 2.
Such communication systems may use different air interfaces and/or physical layers. For example, the air interface used by the communication system includes, for example, Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), and Universal Mobile Telecommunications System (UMTS) (in particular, Long Term Evolution (LTE)), global system for mobile communications (GSM), and the like. By way of non-limiting example, the following description relates to a CDMA communication system, but such teachings are equally applicable to other types of systems.
Referring to fig. 2, the CDMA wireless communication system may include a plurality of mobile terminals 100, a plurality of Base Stations (BSs) 270, Base Station Controllers (BSCs) 275, and a Mobile Switching Center (MSC) 280. The MSC280 is configured to interface with a Public Switched Telephone Network (PSTN) 290. The MSC280 is also configured to interface with a BSC275, which may be coupled to the base station 270 via a backhaul. The backhaul may be constructed according to any of several known interfaces including, for example, E1/T1, ATM, IP, PPP, frame Relay, HDSL, ADSL, or xDSL. It will be understood that a system as shown in fig. 2 may include multiple BSCs 2750.
Each BS270 may serve one or more sectors (or regions), each sector covered by a multi-directional antenna or an antenna pointing in a particular direction being radially distant from the BS 270. Alternatively, each partition may be covered by two or more antennas for diversity reception. Each BS270 may be configured to support multiple frequency allocations, with each frequency allocation having a particular frequency spectrum (e.g., 1.25MHz,5MHz, etc.).
The intersection of partitions with frequency allocations may be referred to as a CDMA channel. The BS270 may also be referred to as a Base Transceiver Subsystem (BTS) or other equivalent terminology. In such a case, the term "base station" may be used to generically refer to a single BSC275 and at least one BS 270. The base stations may also be referred to as "cells". Alternatively, each sector of a particular BS270 may be referred to as a plurality of cell sites.
As shown in fig. 2, a Broadcast Transmitter (BT)295 transmits a broadcast signal to the mobile terminal 100 operating within the system. A broadcast receiving module 111 as shown in fig. 1 is provided at the mobile terminal 100 to receive a broadcast signal transmitted by the BT 295. In fig. 2, several Global Positioning System (GPS) satellites 300 are shown. The satellite 300 assists in locating at least one of the plurality of mobile terminals 100.
In fig. 2, a plurality of satellites 300 are depicted, but it is understood that useful positioning information may be obtained with any number of satellites. The GPS module 115 as shown in fig. 1 is generally configured to cooperate with satellites 300 to obtain desired positioning information. Other techniques that can track the location of the mobile terminal may be used instead of or in addition to GPS tracking techniques. In addition, at least one GPS satellite 300 may selectively or additionally process satellite DMB transmission.
As a typical operation of the wireless communication system, the BS270 receives reverse link signals from various mobile terminals 100. The mobile terminal 100 is generally engaged in conversations, messaging, and other types of communications. Each reverse link signal received by a particular base station 270 is processed within the particular BS 270. The obtained data is forwarded to the associated BSC 275. The BSC provides call resource allocation and mobility management functions including coordination of soft handoff procedures between BSs 270. The BSCs 275 also route the received data to the MSC280, which provides additional routing services for interfacing with the PSTN 290. Similarly, the PSTN290 interfaces with the MSC280, the MSC interfaces with the BSCs 275, and the BSCs 275 accordingly control the BS270 to transmit forward link signals to the mobile terminal 100.
Based on the above mobile terminal hardware structure and communication system, the present invention provides various embodiments of the method.
In view of the fact that the existing APT and ET characteristic calibration is only performed on one reference channel to obtain the characterization tables of the RGI and VCC bias voltages of the reference channel, and the characterization tables of the other channels are the same as the reference channel, but due to different channel frequency responses, the adoption of the APT or ET characteristic table of the one reference channel inevitably causes the problem that some channel bias voltages VCC are higher or lower.
Example one
Fig. 3 is a flowchart of a method for offset voltage compensation according to an embodiment of the present invention, and as shown in fig. 3, the method of the embodiment includes the following steps:
s301, the terminal acquires adjacent channel leakage ratio ACLR of each channeliACLR with reference channelrWherein i is an integer of 1 to n, and r is any integer of 1 to n;
in step S301, the adjacent channel leakage ratio ACLR of each channeliACLR with reference channelrThe difference value can be output to the terminal after the measurement and calculation of the measuring instrument, or the ACLR measured by the measuring instrumentiOutput to the terminal, which calculates the phase of each channelAdjacent channel leakage ratio ACLRiACLR with reference channelrThe difference of (a).
In step S301, the ACLR of each channel is determinediIs through a specified RGI in the radio gain index RGI and PA bias voltage VCC characterization table for the reference channelrValue sum VCCrThe values are measured, and the RGI and VCC characterization table of the reference channel can be obtained by performing characterization calibration of average power tracking or envelope tracking on the reference channel.
S302, the terminal according to the ACLR of each channeliACLR with the reference channelrObtaining the specified VCC in the PA bias voltage of each channel and the radio gain index RGI and PA bias voltage VCC characterization table of the reference channelrA difference of (d);
ACLR over a channeliACLR with the reference channelrThe bias voltage difference is obtained as the compensation voltage, and the measurement of the ACLR value can most simply and effectively evaluate whether the bias voltage setting of the PA is proper.
S303, when the terminal signaling works, the PA bias voltage of the corresponding channel and the VCC are utilizedrThe difference value of (a) is compensated for the bias voltage.
When the ACLR is poor, it is shown that the PA bias voltage setting is low, and increasing the bias voltage value can improve the ACLR; when ACLR is better than the expected value, it means that PA bias voltage is set higher, consuming extra power, and reducing the bias voltage value can reduce power consumption.
Therefore, the method of this embodiment can compensate according to the measured ACLR performance of the channel, and the bias voltage of each channel can be in the optimal APT or ET operating state, thereby finally achieving the optimal combination of ACLR performance and power saving.
Example two
Fig. 4 is a flowchart of a method for offset voltage compensation according to an embodiment of the present invention, and as shown in fig. 4, the method of the embodiment includes the following steps:
step 401, perform characterization calibration of APT or ET on the reference channel to obtain a characterization table of RGI and VCC of the channel.
Wherein, the RGI and VCC characterization table of APT or ET is used for APT calibration or ET calibration of radio frequency terminal production.
Step 402, select one of the RGI and VCC characterization tables for the reference channel (RGI)r，VCCr) The radio frequency terminal adopts VCC in channels 1 to n in sequencerBias voltage of PA to the RGIrTransmit power, measuring ACLR per channeli(i is an integer of 1 to n) and stored.
Step 403, calculating ACLRi-ACLRr。
Step 404, let δ VCCiPA bias voltage and reference voltage VCC for ith channelrDifference of (d), i.e. delta VCCi＝VCCi-VCCr＝(ACLRi-ACLRr) x/dB, wherein x is an arbitrary voltage value of-1 to 1V.
x can be a preferred value of-1 to 1V according to actual measurement, for example: the reference channel bias voltage is 3.3V, which is measured to have an ACLR of-36 dB for the reference channel. The ACLR measured when the PA bias voltage VCC of the channel CH0 is 3.3V is the lowest channel in the frequency band0Is-34 dB. The ACLR0 is larger than ACLRi, which indicates that the bias voltage setting of CH0 is low and the bias voltage of CH0 needs to be increased. Assuming we raised the PA bias voltage of CH0 to 3.5V and the measured ACLR0 is-36 dB, the formula delta VCC is usedi＝VCCi-VCCr＝(ACLRi-ACLRr) x/dB (-34dB- (-36dB)) x/dB, and x was calculated to be 0.1V. Conversely, the ACLR measured when the PA bias voltage VCC of the channel CH0 is 3.3V is the lowest frequency band channel CH00And x is-38 dB, and x is-0.1V.
Step 405, bias voltage of PA of each channel and VCCrStoring the difference value and the corresponding relation table of the corresponding channel;
will (delta VCC)i，Channeli) The table is stored in NV (Non-Volatile memory) of the radio terminal.
Step 406, calibrating APT or ET of the reference channel of the radio frequency terminal according to the RGI and VCC characterization table, and calibrating the reference channelAnd storing the data in NV of the radio frequency terminal, wherein j is an integer of 0-80.
Step 407, calling the offset voltage difference value and the related parameters of the reference channel when the radio frequency terminal signaling works, and performing offset voltage compensation.
Calling from NV (delta VCC) when RF terminal signaling is activei，Channeli) Andparameters such that the ith channel APT or ET operating mode parameter isWherein,
EXAMPLE III
Fig. 5 is a schematic diagram of an offset voltage compensation apparatus according to an embodiment of the present invention, and as shown in fig. 5, the offset voltage compensation apparatus 500 of the present embodiment includes:
a first obtaining module 501, configured to obtain adjacent channel leakage ratio ACLR of each channeliACLR with reference channelrWherein i is an integer of 1 to n, and r is any integer of 1 to n;
adjacent channel leakage ratio ACLR per channeliACLR with reference channelrThe difference value of (a) may be the first obtaining module 501 which is measured and calculated by the measuring instrument and then output to the terminal, or may be ACLR measured by the measuring instrumentiOutput to the terminal, the first obtaining module 501 of the terminal calculates the adjacent channel leakage ratio ACLR of each channeliACLR with reference channelrThe difference of (a).
A second obtaining module 502 for obtaining ACLR according to each channeliACLR with the reference channelrObtaining the PA bias voltage of each channel and the VCCrA difference of (d);
a compensation module 503, configured to utilize the PA bias voltage of the corresponding channel and the VCC during signaling operationrThe difference value of (a) is compensated for the bias voltage.
Wherein the ACLR of each channeliIs through a specified RGI in the radio gain index RGI and PA bias voltage VCC characterization table for the reference channelrValue sum VCCrThe values are measured, and the RGI and VCC characterization table of the reference channel is obtained by performing characterization calibration of average power tracking or envelope tracking on the reference channel.
Wherein the second obtaining module 502 obtains PA bias voltages of each channel and the VCCrDifference of (delta) VCCiThe method can be realized by the following steps: delta VCCi＝(ACLRi-ACLRr) x/dB, wherein x is a specified voltage value in-1V.
The bias voltage compensation device provided by the embodiment of the invention is used for realizing the compensation of the bias voltage of each channel, so that the bias voltage of each channel is in the optimal APT or ET working state, and finally, the optimal combination of ACLR performance and power saving can be achieved.
Example four
As shown in fig. 6, the apparatus for compensating a bias voltage according to the present embodiment may further include, in addition to the modules in the third embodiment or the fourth embodiment:
a storage module 601, configured to obtain the PA bias voltage of each channel and the VCCrAnd storing the corresponding relation table of the difference value and the corresponding channel.
The present embodiment also provides a terminal comprising the above apparatus for bias voltage compensation.
The terminal of this embodiment, ACLR through channeliACLR with the reference channelrThe bias voltage difference is obtained by the difference value to be used as compensation voltage, the ACLR value can be measured to most simply and effectively evaluate whether the bias voltage setting of the PA is proper or not, when the ACLR difference exists, the PA bias voltage setting is low, and the ACLR can be improved by increasing the bias voltage value; when ACLR is better than the expected value, it means that PA bias voltage is set higher, consuming extra power, and reducing the bias voltage value can reduce power consumption. Therefore, the terminal of this embodiment can compensate according to the measured ACLR performance of the channel, and the bias voltage of each channel can be in the optimal APT or ET operating state, thereby finally achieving the optimal combination of ACLR performance and power saving.
It should be noted that the first obtaining module 501, the second obtaining module 502 and the compensating module 503 in the mobile terminal (or apparatus) provided by the present invention may be disposed in the controller 180 in fig. 1, and the storing module 601 may be disposed in the memory 160 in fig. 1.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A method of bias voltage compensation, comprising:
obtaining adjacent channel leakage ratio ACLR of each channeliACLR with reference channelrWherein i is any integer from 1 to n, and r is any integer from 1 to n;
according to the ACLR of each channeliACLR with the reference channelrObtaining the PA bias voltage of each channel and the radio gain index RGI and PA bias voltage VCC characteristic table of the reference channelVCCrA difference of (d);
when the signaling works, the PA bias voltage of the corresponding channel and the VCC are utilizedrPerforming bias voltage compensation on the difference value;
the ACLR of each channeliIs through RGI specified in RGI and VCC characterization table of the reference channelrValue and the VCCrThe values are measured, and the RGI and VCC characterization table of the reference channel is obtained by performing characterization calibration of average power tracking or envelope tracking on the reference channel.
2. The method of claim 1, wherein the ACLR according to each channel isiACLR with the reference channelrObtaining the PA bias voltage of each channel and the VCCrDifference of (delta) VCCiThe method is realized by the following steps:
δVCCi＝(ACLRi-ACLRr) x/dB, wherein x is a specified voltage value in-1V.
3. The method of bias voltage compensation according to any of claims 1-2, wherein said obtaining PA bias voltage and said VCC for each channelrAfter the difference, further comprising:
obtaining the PA bias voltage of each channel and the VCCrAnd storing the corresponding relation table of the difference value and the corresponding channel.
4. An apparatus for bias voltage compensation, comprising:
a first obtaining module for obtaining adjacent channel leakage ratio ACLR of each channeliACLR with reference channelrWherein i is any integer from 1 to n, and r is any integer from 1 to n;
a second obtaining module for obtaining ACLR according to each channeliACLR with the reference channelrObtaining each channelPA bias voltage and VCC of power amplifierrA difference of (d);
a compensation module for utilizing the PA bias voltage of the corresponding channel and the radio gain index RGI of the reference channel and the designated VCC in the VCC characterization table of the PA bias voltage when the signaling worksrPerforming bias voltage compensation on the difference value;
the ACLR of each channeliIs through RGI specified in RGI and VCC characterization table of the reference channelrValue and the VCCrThe values are measured, and the RGI and VCC characterization table of the reference channel is obtained by performing characterization calibration of average power tracking or envelope tracking on the reference channel.
5. The apparatus of bias voltage compensation according to claim 4,
the second obtaining module obtains the PA bias voltage of each channel and the VCCrDifference of (delta) VCCiThe method is realized by the following steps: delta VCCi＝(ACLRi-ACLRr) x/dB, wherein x is a specified voltage value in-1V.
6. The apparatus for bias voltage compensation according to any one of claims 4-5, further comprising,
a storage module for obtaining the PA bias voltage of each channel and the VCCrAnd storing the corresponding relation table of the difference value and the corresponding channel.
7. A terminal comprising a bias voltage compensation arrangement according to any of claims 4-6.
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| CN108650035B (en) * | 2018-05-15 | 2021-08-20 | Oppo广东移动通信有限公司 | Electronic equipment calibration method, apparatus, electronic equipment and storage medium |
| CN108683413B (en) * | 2018-05-15 | 2020-03-27 | Oppo广东移动通信有限公司 | RF power amplifier power supply control method, device, terminal equipment and medium |
| CN108990140B (en) * | 2018-08-31 | 2021-08-17 | 北京小米移动软件有限公司 | Method and electronic device for determining radio frequency power |
| CN110430001B (en) * | 2019-08-30 | 2021-04-13 | 联想(北京)有限公司 | Carrier optimization method and system |
| CN111641957B (en) * | 2020-06-09 | 2023-01-31 | 展讯通信（上海）有限公司 | APT voltage configuration method and system, electronic device and computer readable medium |
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