CN115051763B - Measuring method and measuring device for voltage standing wave ratio and electronic equipment - Google Patents

Measuring method and measuring device for voltage standing wave ratio and electronic equipment Download PDF

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Publication number
CN115051763B
CN115051763B CN202210680554.5A CN202210680554A CN115051763B CN 115051763 B CN115051763 B CN 115051763B CN 202210680554 A CN202210680554 A CN 202210680554A CN 115051763 B CN115051763 B CN 115051763B
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antenna
feedback power
target
antenna unit
time length
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CN115051763A (en
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李名玮
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
    • 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

Abstract

The application discloses a voltage standing wave ratio measuring method, a measuring device and electronic equipment, and belongs to the technical field of communication equipment. The voltage standing wave ratio measuring method comprises the following steps: calibrating antenna feedback power and forward feedback power of a target antenna unit in a plurality of antenna units to obtain corresponding calibration parameters, wherein the plurality of antenna units comprise the target antenna unit; measuring a first antenna feedback power of the target antenna unit and a first forward feedback power; calibrating the first antenna feedback power and the first forward feedback power through the calibration parameters to obtain a second antenna feedback power and a second forward feedback power; and determining the voltage standing wave ratio of the target antenna unit through the second antenna feedback power and the second forward feedback power.

Description

Measuring method and measuring device for voltage standing wave ratio and electronic equipment
Technical Field
The application belongs to the technical field of communication equipment, and particularly relates to a voltage standing wave ratio measuring method, a measuring device and electronic equipment.
Background
In the related art, in order to improve radiation efficiency, aperture tuning and impedance tuning are generally used for uplink transmission limited radiation indicators (TRP, total Radiated Power) of communication electronic devices such as mobile phones. The impedance tuning is essentially a microwave impedance matching technology, the purpose of which is to obtain maximum power for a load (antenna), and for a line standing wave transmission system, the voltage standing wave ratio (VSWR, voltage Standing Wave Ratio) is an index for measuring impedance matching.
Currently, the detection of the voltage standing wave ratio needs to be obtained by calculating forward Feedback (FWD) power and antenna Reflected (REV) power through a multiplexing Feedback reception (FBRX) link, and the test is to calibrate only the FWD, which results in inaccurate VSWR measurement.
Disclosure of Invention
The embodiment of the application aims to provide a voltage standing wave ratio measuring method, a measuring device and electronic equipment, which can solve the problem of inaccurate VSWR measurement.
In a first aspect, an embodiment of the present application provides a method for measuring a voltage standing wave ratio, applied to an electronic device, where the electronic device includes an antenna assembly, the antenna assembly includes a plurality of antenna units, a modem, and a circulator, and the circulator is disposed between the antenna units and the modem, and is configured to switch an antenna between a state of receiving radio frequency signals and a state of transmitting radio frequency signals, and the method includes:
calibrating antenna feedback power and forward feedback power of a target antenna unit in a plurality of antenna units to obtain corresponding calibration parameters, wherein the plurality of antenna units comprise the target antenna unit;
measuring a first antenna feedback power of the target antenna unit and a first forward feedback power;
Calibrating the first antenna feedback power and the first forward feedback power through the calibration parameters to obtain a second antenna feedback power and a second forward feedback power;
and determining the voltage standing wave ratio of the target antenna unit through the second antenna feedback power and the second forward feedback power.
In a second aspect, an embodiment of the present application provides a measurement device for a voltage standing wave ratio, where the measurement device is used in an electronic device, the electronic device includes an antenna assembly, the antenna assembly includes a plurality of antenna units, a modem, and a circulator, and the circulator is disposed between the antenna units and the modem, and is used to switch an antenna between a state of receiving radio frequency signals and a state of transmitting radio frequency signals, and the measurement device includes:
the calibration module is used for calibrating the antenna feedback power and the forward feedback power of the target antenna unit to obtain corresponding calibration parameters, wherein the plurality of antenna units comprise the target antenna unit;
the measuring module is used for measuring the first antenna feedback power and the first forward feedback power of the antenna unit;
the calibration module is further used for calibrating the first antenna feedback power and the first forward feedback power through calibration parameters to obtain a second antenna feedback power and a second forward feedback power;
And the determining module is used for determining the voltage standing wave ratio of the target antenna unit through the second antenna feedback power and the second forward feedback power.
In a third aspect, embodiments of the present application provide an electronic device comprising a processor and a memory storing a program or instructions executable on the processor, the program or instructions implementing the steps of the method as in the first aspect when executed by the processor.
In a fourth aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions which when executed by a processor perform the steps of the method as in the first aspect.
In a fifth aspect, embodiments of the present application provide a chip comprising a processor and a communication interface coupled to the processor for running a program or instructions implementing the steps of the method as in the first aspect.
In a sixth aspect, embodiments of the present application provide a computer program product stored in a storage medium, the program product being executable by at least one processor to implement a method as in the first aspect.
In the embodiment of the application, in the antenna assembly of the electronic device such as the mobile phone, a circulator is arranged between the antenna unit and the modem, and the circulator is used for replacing the Tx-Rx gating switch, so that an FBRX link of the core is formed. When the voltage standing wave ratio, namely the VSWR, is measured, the antenna feedback power and the forward feedback power are calibrated by multiplexing the FBRX link, and the VSWR is calculated based on the calibrated antenna feedback power REV and the forward feedback power FWD, so that the measurement accuracy of the VSWR can be improved.
Drawings
FIG. 1 shows one of the flowcharts of a method for measuring voltage standing wave ratio according to an embodiment of the present application;
FIG. 2 shows a second flowchart of a method for measuring voltage standing wave ratio according to an embodiment of the present application;
FIG. 3 shows a block diagram of a measurement device according to an embodiment of the present application;
FIG. 4 shows a block diagram of an electronic device according to an embodiment of the present application;
fig. 5 shows one of the path schematic diagrams of the antenna assembly according to an embodiment of the present application;
FIG. 6 illustrates a second schematic diagram of a path of an antenna assembly according to an embodiment of the present application;
FIG. 7 illustrates a third schematic diagram of the path of an antenna assembly according to an embodiment of the present application;
fig. 8 shows a fourth schematic diagram of the path of an antenna assembly according to an embodiment of the present application;
fig. 9 is a schematic hardware structure of an electronic device implementing an embodiment of the present application.
Reference numerals:
502 a circulator.
Detailed Description
Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The voltage standing wave ratio measuring method, the measuring device and the electronic equipment provided by the embodiment of the application are described in detail through specific embodiments and application scenes thereof with reference to the accompanying drawings.
In some embodiments of the present application, a method for measuring a voltage standing wave ratio is provided, and the method is applied to an electronic device, where the electronic device includes an antenna assembly, and the antenna assembly includes a plurality of antenna units, a modem, and a circulator, where the circulator is disposed between the antenna units and the modem, and is configured to switch an antenna between a state of receiving radio frequency signals and a state of transmitting radio frequency signals.
Fig. 1 shows one of flowcharts of a method for measuring a voltage standing wave ratio according to an embodiment of the present application, as shown in fig. 1, the method includes:
step 102, calibrating antenna feedback power and forward feedback power of a target antenna unit in a plurality of antenna units to obtain corresponding calibration parameters;
in step 102, a plurality of antenna elements includes a target antenna element;
step 104, measuring a first antenna feedback power and a first forward feedback power of the target antenna unit;
step 106, calibrating the first antenna feedback power and the first forward feedback power through calibration parameters to obtain a second antenna feedback power and a second forward feedback power;
and step 108, determining the voltage standing wave ratio of the target antenna unit through the second antenna feedback power and the second forward feedback power.
In this embodiment of the present application, the electronic device may specifically be an electronic device having a communication function, such as a mobile phone, where an antenna assembly is provided, and signal interaction is performed between the antenna assembly and a base station, so as to implement wireless communication.
The antenna assembly specifically comprises a plurality of antenna units, a Modem (Modem) and a circulator, wherein the antenna units can receive radio frequency signals sent by the base station, transmit the radio frequency signals to the Modem through a downlink receiving channel, and acquire corresponding communication signals through the demodulation function of the Modem. Corresponding to the uplink situation, the modem modulates the data generated by the processor into uplink radio frequency signals, and sends the radio frequency signals to the antenna unit through the uplink sending channel, and the radio frequency signals are sent to the base station through the radiation effect of the antenna unit, so that uplink and downlink communication is realized.
The circulator is a single-row irreversible device, and can sequentially switch the communicated interfaces according to the determined direction sequence, so that the switching between receiving downlink radio frequency signals and transmitting uplink radio frequency signals is realized. The switching between the receiving and transmitting functions of the antenna units can be realized through the circulator.
For the 5g sub6g architecture TDD (Time Division Duplexing time division duplex) mode antenna unit, the circulator may be integrated inside a radio frequency integrated circuit RFIC device, may be disposed after a coupler, and may also be disposed at an antenna input position.
In measuring VSWR, first, both the antenna feedback power REV and the forward feedback power FWD are calibrated. The forward feedback power FWD may be measured by an FBRX link of a conventional architecture, and the antenna reflected power REV may be measured by an RX link formed by a circulator.
After calibrating the antenna feedback power REV and the forward feedback power FWD, the corresponding calibration parameters are saved and checked.
After calibration is completed, under the condition that the measurement condition is met, measuring the current actual antenna feedback power REV and the forward feedback power FWD, and adjusting the actually measured first antenna feedback power and the first forward feedback power through the calibration parameters obtained through calibration to obtain the calibrated second antenna feedback power and second forward feedback power.
Based on the calibrated second antenna feedback power and second forward feedback power, the voltage standing wave ratio of the target antenna unit is calculated, and the measurement accuracy of the VSWR can be effectively improved.
In some embodiments of the present application, the antenna unit is configured to perform network signal interaction with the base station;
before measuring the first antenna feedback power of the antenna element and the first forward feedback power, the method further comprises:
determining a corresponding protection time slot according to frame structure information of a cell frame of the base station;
judging whether the protection time slot meets a preset condition or not;
and under the condition that the protection time slot meets the preset condition, executing the steps of measuring the first antenna feedback power and the first forward feedback power of the antenna unit.
In the embodiment of the present application, before measuring the VSWR of the antenna unit, it is first determined whether there is a guard slot of a sufficient length in the structure of the cell frame for completing the measurement of the VSWR. Specifically, when the electronic device starts up for network searching, the synchronization signal and Physical Broadcast Channel (PBCH) block (SSB, synchronization Signal and PBCH block) of the cell of the connected base station, and cell system information (SIB 1, system Information Block) are parsed.
The cell Frame (Frame) specifically refers to a service cell group (such as a base station, etc.) connected to the electronic device, and a data transmission unit between the cell Frame and the electronic device belongs to a network transmission unit, and the specific concept is that a fixed-size "block" formed by dividing a physical memory or a logical memory is used for carrying data transmission between the electronic device and the base station through the cell Frame.
After the analysis of the SSB and SIB1 of the cell is completed, the downlink synchronization is completed, the structural information of the cell frame of the base station is obtained, and the corresponding time length of the protection time slot is determined according to the cell frame.
If the duration of the guard time slot meets the preset condition, it is indicated that the guard time slot has enough duration for VSWR measurement, and at this time, the current antenna feedback power REV and the forward feedback power FWD of the antenna unit are measured and calibrated, and the VSWR measurement is completed.
The method and the device for determining whether to execute VSWR measurement based on the protection time slot can ensure that normal communication of the electronic equipment is not affected and ensure communication quality.
In some embodiments of the present application, determining a corresponding guard time slot according to frame structure information of a cell frame of a base station includes: determining the number of the protection identifications corresponding to the cell frames and the carrier spacing of the cell frames according to the frame structure information; and determining the protection time slot according to the number of the protection identifications and the carrier spacing.
In this embodiment of the present application, when an electronic device is networked, based on the cell SSB and SIB1 of a base station connected by a lock, structural information of a cell frame is obtained, and based on the number of protection identifiers GP (Guard Periods) symbols in an S slot in a frame structure, and combined with a carrier Spacing (SCS) of the cell, the total time length of a protection gap in the S slot can be calculated.
Under the condition that the duration of the protection time slot meets the preset condition, the voltage standing wave ratio of the target antenna unit is calculated based on the calibrated second antenna feedback power and the second forward feedback power, and the measurement accuracy of the VSWR can be effectively improved.
In some embodiments of the present application, determining whether the guard time slot meets a preset condition includes:
receiving first time length information, wherein the first time length information is time length information determined by a base station based on a physical random access channel initiated by electronic equipment;
determining a target time length according to the protection time slot, the first time length information and the second time length information, wherein the second time length information is the interval time length from the switching of the electronic equipment from the receiving of the downlink signal to the sending of the uplink signal;
and judging whether the protection time slot meets the preset condition or not based on the comparison result of the target time length and the time length threshold value.
In the embodiment of the present application, after the downlink synchronization is completed, the terminal initiates a physical random access channel (PRACH, physical Random Access Channel) to perform uplink synchronization with the base station. After receiving the PRACH initiated by the terminal, the base station can calculate the advanced sending time of the uplink data of the terminal, namely, the first time information, which is denoted as TA herein, and sends the first time information TA to the terminal through the Msg2 information.
Based on the first time length TA and the protection time slot T GP And a second time period T2, calculating a target time period T1, wherein the specific formula is as follows:
T1＝T GP -2×TA-T2；
the second duration T2 is a processing duration required for the electronic device to change from downlink to uplink.
After the target time length T1 is obtained, whether the protection time slot meets the preset condition is determined according to the comparison result of the target time length T1 and the corresponding time length threshold value. If the protection time slot meets the preset condition, VSWR measurement can be performed, otherwise normal communication is kept, and the protection time slot is used for uplink and downlink buffer intervals.
In some embodiments of the present application, the target time period is greater than the time period threshold and the current signal period is an antenna standing wave detection period.
In the embodiment of the present application, if the target time period is longer than the time period threshold, it is indicated that the available time amount of the protection gap satisfies the VSWR detection condition at the current time, at this time, if the signal period is the antenna standing wave detection period, it is determined that the preset condition is satisfied, the current actual antenna feedback power REV and the forward feedback power FWD are measured, and the voltage standing wave ratio of the target antenna unit is calculated based on the calibrated second antenna feedback power and second forward feedback power, so that the measurement accuracy of the VSWR can be effectively improved.
In some embodiments of the present application, measuring a first antenna feedback power of an antenna element, and a first forward feedback power, includes:
starting a transmitting path, a feedback receiving path, an antenna reflected power path and a channel sounding reference signal selecting path corresponding to a target antenna unit;
transmitting the channel sounding reference signal to the target antenna unit through the transmission path and the channel sounding reference signal selection path;
the first forward feedback power is measured through the feedback receive path and the first antenna feedback power is measured through the antenna power path.
In the embodiment of the present application, when the antenna Feedback power REV and the forward Feedback power FWD of the antenna unit are measured, the antenna bit number to be calibrated is obtained, that is, the target antenna unit is determined, and a Transmission (TX) path, a Feedback reception (FBRX) path, an antenna reflected power (REV) path, and a channel sounding reference signal selection (SRS, sounding Reference Signa) path corresponding to the target antenna unit are opened.
Using the SRS signal as a calibration sequence, the calibration sequence is transmitted to the corresponding antenna element, i.e. the target antenna element, via the TX path and the SRS antenna selection path, at which time the forward feedback power FWD is measured via the FBRX path and the reflected antenna power REV is measured via the REV path.
And the SRS signal is used as a calibration sequence, and has good auto-correlation and cross-correlation properties, so that the calibration success rate can be improved, and the influence on other terminals can be reduced.
In some embodiments of the present application, before turning on the transmission path, the feedback reception path, the antenna reflected power path, and the channel sounding reference signal selection path corresponding to the target antenna unit, the method further includes:
closing the receiving path of the external low-noise amplifier corresponding to the target antenna unit.
In the embodiment of the application, in order to prevent the output power of the uplink power amplifier from exceeding the bearing range of the external low noise amplifier (eLNA), before performing REV radio frequency calibration, the receiving channel of the external low noise amplifier (eLNA) is closed, so that the damage of the external low noise amplifier can be avoided, and the reliability is improved.
In some embodiments of the present application, fig. 2 shows a second flowchart of a method for measuring a voltage standing wave ratio according to an embodiment of the present application, as shown in fig. 2, the method for measuring includes:
step 202, the electronic equipment searches a cell SSB, completes downlink synchronization, and acquires GP time scales and time measures;
step 204, the electronic device PRACH completes uplink synchronization and acquires the advanced transmission amount Ta;
Step 206, calculating the available time T1 of the current moment GP;
in step 206, the specific formula for calculating the target time period T1 is: t1=t GP -2×TA-T2; wherein TA is a first time period, T GP To protect the time slot, T2 is a second duration.
Step 208, judging whether the VSWR detection condition is satisfied, if yes, entering step 210, otherwise returning to step 204;
step 210, judging whether a VSWR triggering condition exists, if yes, entering step 214, otherwise, entering step 212;
step 212, keep the normal communication, GR time is used for the buffer interval of up and down;
step 214, determining a target antenna unit, acquiring FWD and REV by using ZC sequence, and calculating VSWR of the target antenna unit;
after step 214 is performed, the process returns to step 204.
Detailed process decomposition of antenna standing wave detection:
(1) Assuming that the terminal starts up and searches the network, after analyzing the cell SSB (Synchronization Signal and PBCH block) and SIB1 (System Information Block), completing downlink synchronization and obtaining cell frame structure information, and according to the number of GPSymbol in S time slots in the frame structure, calculating the total time quantity TGP of GP in the S time slots by combining with the cell SCS (SubCarrier Spacing);
(2) After the downlink synchronization is completed, the terminal initiates the PRACH to carry out uplink synchronization with the base station, and the base station can calculate the uplink advanced transmission time TA of the terminal after receiving the PRACH and inform the terminal through Msg2 information;
(3) Calculating the amount of time t1=t available for antenna standing wave detection in GP time GP -2 x TA-T2, wherein T2 is the processing time required for the terminal to go downstream to upstream;
(4) Judging whether the time amount T1 meets the antenna standing wave detection time requirement, entering the step (5) if the time amount T1 meets the condition, and waiting in the step (2) if the time amount T1 does not meet the condition;
(5) Judging whether the antenna standing wave detection period is the antenna standing wave detection period, and if the antenna standing wave detection period is the antenna standing wave detection period, performing specific operation of antenna standing wave detection:
a. acquiring an antenna bit number to be calibrated, opening a corresponding TX path, an FBRX path, an REV path (an RX link of an eLNA is turned off), and an SRS antenna selection path;
b. the terminal can use SRS signals as calibration sequences, wherein the SRS signals of the terminal have better auto-correlation and cross-correlation properties, the calibration success rate can be improved, the influence on other terminals can be reduced, the SRS signals transmit the calibration sequences to corresponding antennas through a TX path and an SRS antenna selection path, at the moment, forward feedback power FWD is measured through an FBRX path, reflected power REV of the antennas is measured through a REV path, and the VSWR of the antennas can be calculated through a reflection coefficient formula;
c. and 4-antenna VSWR calibration polling is carried out in the subsequent GP time according to the steps, so that all the antenna port VSWR values are obtained.
(6) Waiting for the next PRACH synchronization or monitoring the TA time of the terminal at the moment, and carrying out the next antenna standing wave calibration after the VSWR triggering condition is met.
In some embodiments of the present application, a voltage standing wave ratio measurement apparatus is provided for an electronic device, where the electronic device includes an antenna assembly, and the antenna assembly includes a plurality of antenna units, a modem, and a circulator, where the circulator is disposed between the antenna units and the modem, and is configured to switch an antenna between a state of receiving radio frequency signals and a state of transmitting radio frequency signals.
Fig. 3 shows a block diagram of a measuring device according to an embodiment of the present application, and as shown in fig. 3, a measuring device 300 includes:
the calibration module 302 is configured to calibrate an antenna feedback power and a forward feedback power of a target antenna unit to obtain corresponding calibration parameters, where the plurality of antenna units include the target antenna unit;
a measurement module 304, configured to measure a first antenna feedback power of the antenna unit, and a first forward feedback power;
the calibration module 302 is further configured to calibrate the first antenna feedback power and the first forward feedback power to obtain a second antenna feedback power and a second forward feedback power through calibration parameters;
A determining module 306, configured to determine a voltage standing wave ratio of the target antenna unit according to the second antenna feedback power and the second feedback power.
In the embodiment of the application, in the antenna assembly of the electronic device such as the mobile phone, a circulator is arranged between the antenna unit and the modem, and the circulator is used for replacing the Tx-Rx gating switch, so that an FBRX link of the core is formed. When the voltage standing wave ratio, namely the VSWR, is measured, the antenna feedback power and the forward feedback power are calibrated by multiplexing the FBRX link, and the VSWR is calculated based on the calibrated antenna feedback power REV and the forward feedback power FWD, so that the measurement accuracy of the VSWR can be improved.
In some embodiments of the present application, the antenna unit is configured to perform network signal interaction with the base station;
the determining module is also used for determining a corresponding protection time slot according to the frame structure information of the cell frame of the base station;
the measuring device further includes:
the judging module is used for judging whether the protection time slot meets the preset condition;
and the measuring module is also used for executing the steps of measuring the first antenna feedback power and the first forward feedback power of the antenna unit under the condition that the protection time slot meets the preset condition.
The method and the device for determining whether to execute VSWR measurement based on the protection time slot can ensure that normal communication of the electronic equipment is not affected and ensure communication quality.
In some embodiments of the present application, the determining module is further configured to:
determining the number of the protection identifications corresponding to the cell frames and the carrier spacing of the cell frames according to the frame structure information;
and determining the protection time slot according to the number of the protection identifications and the carrier spacing.
Under the condition that the duration of the protection time slot meets the preset condition, the voltage standing wave ratio of the target antenna unit is calculated based on the calibrated second antenna feedback power and the second forward feedback power, and the measurement accuracy of the VSWR can be effectively improved.
In some embodiments of the present application, the measurement device further comprises:
the receiving module is used for receiving first time length information, wherein the first time length information is time length information determined by the base station based on a physical random access channel initiated by the electronic equipment;
the determining module is further used for determining a target duration according to the protection time slot, the first duration information and the second duration information, wherein the second duration information is the interval duration of the electronic equipment from receiving the downlink signal to switching to sending the uplink signal;
the judging module is further used for judging whether the protection time slot meets the preset condition or not based on the comparison result of the target time length and the time length threshold value.
After the target time length T1 is obtained, whether the protection time slot meets the preset condition is determined according to the comparison result of the target time length T1 and the corresponding time length threshold value. If the protection time slot meets the preset condition, VSWR measurement can be performed, otherwise normal communication is kept, and the protection time slot is used for uplink and downlink buffer intervals.
In some embodiments of the present application, the set conditions include: the target time length is greater than the time length threshold, and the current signal period is the antenna standing wave detection period.
In the embodiment of the present application, if the target time period is longer than the time period threshold, it is indicated that the available time amount of the protection gap satisfies the VSWR detection condition at the current time, at this time, if the signal period is the antenna standing wave detection period, it is determined that the preset condition is satisfied, the current actual antenna feedback power REV and the forward feedback power FWD are measured, and the voltage standing wave ratio of the target antenna unit is calculated based on the calibrated second antenna feedback power and second forward feedback power, so that the measurement accuracy of the VSWR can be effectively improved.
In some embodiments of the present application, the measurement device further comprises:
the starting module is used for starting a transmitting path, a feedback receiving path, an antenna reflected power path and a channel sounding reference signal selecting path which correspond to the target antenna unit;
A transmitting module, configured to transmit a channel sounding reference signal to a target antenna unit through a transmitting path and a channel sounding reference signal selecting path;
the measuring module is further used for measuring the first forward feedback power through the feedback receiving path and measuring the first antenna feedback power through the antenna power path.
And the SRS signal is used as a calibration sequence, and has good auto-correlation and cross-correlation properties, so that the calibration success rate can be improved, and the influence on other terminals can be reduced.
In some embodiments of the present application, the measurement device further comprises:
and the closing module is used for closing the receiving passage of the external low-noise amplifier corresponding to the target antenna unit.
In the embodiment of the application, in order to prevent the output power of the uplink power amplifier from exceeding the bearing range of the external low noise amplifier (eLNA), before performing REV radio frequency calibration, the receiving channel of the external low noise amplifier (eLNA) is closed, so that the damage of the external low noise amplifier can be avoided, and the reliability is improved.
The measuring device in the embodiment of the application may be an electronic device, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, the electronic device may be a mobile phone, tablet computer, notebook computer, palm computer, vehicle-mounted electronic device, mobile internet appliance (Mobile Internet Device, MID), augmented reality (augmented reality, AR)/Virtual Reality (VR) device, robot, wearable device, ultra-mobile personal computer, UMPC, netbook or personal digital assistant (personal digital assistant, PDA), etc., but may also be a server, network attached storage (Network Attached Storage, NAS), personal computer (personal computer, PC), television (TV), teller machine or self-service machine, etc., and the embodiments of the present application are not limited in particular.
The measuring device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
The measurement device provided in the embodiment of the present application can implement each process implemented by the foregoing method embodiment, and in order to avoid repetition, details are not repeated here.
Optionally, an electronic device is further provided in the embodiments of the present application, fig. 4 shows a block diagram of a structure of an electronic device according to an embodiment of the present application, as shown in fig. 4, an electronic device 400 includes a processor 402, a memory 404, and a program or an instruction stored in the memory 404 and capable of running on the processor 402, where the program or the instruction is executed by the processor 402 to implement each process of the foregoing method embodiment, and the same technical effects are achieved, and are not repeated herein.
The electronic device in the embodiment of the application includes the mobile electronic device and the non-mobile electronic device.
In some embodiments of the present application, the electronic device further comprises: an antenna assembly, the antenna assembly comprising: a plurality of antenna elements; a modem; and the circulator is arranged between the antenna unit and the modem and is used for enabling the antenna to be switched between a state of receiving radio frequency signals and a state of transmitting radio frequency signals.
In this embodiment of the present application, the electronic device may specifically be an electronic device having a communication function, such as a mobile phone, where an antenna assembly is provided, and signal interaction is performed between the antenna assembly and a base station, so as to implement wireless communication.
The antenna assembly specifically comprises a plurality of antenna units, a Modem (Modem) and a circulator, wherein the antenna units can receive radio frequency signals sent by the base station, transmit the radio frequency signals to the Modem through a downlink receiving channel, and acquire corresponding communication signals through the demodulation function of the Modem. Corresponding to the uplink situation, the modem modulates the data generated by the processor into uplink radio frequency signals, and sends the radio frequency signals to the antenna unit through the uplink sending channel, and the radio frequency signals are sent to the base station through the radiation effect of the antenna unit, so that uplink and downlink communication is realized.
The circulator is a single-row irreversible device, and can sequentially switch the communicated interfaces according to the determined direction sequence, so that the switching between receiving downlink radio frequency signals and transmitting uplink radio frequency signals is realized. The switching between the receiving and transmitting functions of the antenna units can be realized through the circulator.
In some embodiments of the present application, fig. 5 shows one of the schematic paths of the antenna assembly according to the embodiments of the present application, and as shown in fig. 5, the antenna assembly is a 5g Sub6 system antenna assembly, and the antenna assembly further includes a radio frequency integrated circuit and a coupler;
the circulator 502 is integrated into a radio frequency integrated circuit; or the circulator 502 is arranged at one end of the coupler far away from the antenna unit; or the coupler is arranged at the input end of the antenna unit.
In the embodiment of the application, in the 5g Sub6 TDD system, the radio frequency front end basically supports the 2T4RSRS architecture (SA) and the 1T4R (NSA) architecture, so that the VSWR value of the antenna can be measured by multiplexing the SRS path, as known from the reflection coefficient formula, the forward feedback power FWD is obtained through the FBRX link of the conventional architecture, and the antenna reflected power REV is obtained through the RX link of the new architecture, so that compared with the conventional architecture, the Tx-RX gating switch is replaced by a circulator; the circulator (replacing the Tx-Rx gating switch) is preferably integrated in the RFIC device, and can be optionally placed behind a coupler or at an antenna input position, so that the performance of VSWR detection can be improved.
In some embodiments of the present application, fig. 6 shows a second schematic diagram of a path of an antenna assembly according to an embodiment of the present application, where, as shown in fig. 6, the antenna assembly is an antenna assembly of a Phase2/3/5N architecture, and the antenna assembly further includes a multimode multiband power amplifier and a coupler;
The circulator 502 is integrated into a multi-mode multi-band power amplifier; or the circulator 502 is arranged at one end of the coupler far away from the antenna unit; or the coupler is arranged at the input end of the antenna unit.
In the embodiment of the application, the radio frequency front end Phase2/3/5N architecture of the electronic equipment is largely applied to the 4G frequency band and the 5G Re-tuning frequency band, and because a separate device scheme is used, a TX link coupler of the electronic equipment uses a passive structure of an LTCC technology, and a CPL/ISO switching function is carried out without a built-in active radio frequency switch, so that REV detection cannot be carried out on an FBRX link, and therefore antenna standing wave detection cannot be carried out on the Phase2/3/5N architecture.
REV detection can be performed by using an RX link, FWD is obtained according to an FBRX link of a traditional architecture, namely, the standing wave ratio of an antenna can be calculated through a reflection coefficient formula, and SRS channels are multiplexed to perform multipath antenna standing wave detection; the circulator (replacing the Tx-Rx gating switch) can be arranged in the MMPA device, can be optionally arranged behind the coupler or at the input position of the antenna, and can be flexibly selected according to the detection performance and the radio frequency area.
In some embodiments of the present application, fig. 7 shows a third schematic diagram of a path of an antenna assembly according to an embodiment of the present application, fig. 8 shows a fourth schematic diagram of a path of an antenna assembly according to an embodiment of the present application, and as shown in fig. 7 and 8, the antenna assembly is an antenna assembly of a 5G millimeter wave architecture, and the antenna assembly includes an intermediate frequency module and a millimeter wave front module;
The circulator 502 is arranged on the intermediate frequency module; or the circulator 502 is arranged at one end of the millimeter wave front end module close to the antenna unit.
In the embodiment of the application, the millimeter wave main stream radio frequency front end architecture is AiP scheme, and the circulator can be placed in the IF module or the millimeter wave front end module for detecting the standing wave detection of the radio frequency port of the IF module, so that the radio frequency connection performance between the IF module and the millimeter wave front end module is enhanced; the circulator may also be placed near the millimeter wave front end module near the antenna for detecting the antenna VSWR value.
Fig. 9 is a schematic hardware structure of an electronic device implementing an embodiment of the present application.
The electronic device 900 includes, but is not limited to: radio frequency unit 901, network module 902, audio output unit 903, input unit 904, sensor 905, display unit 906, user input unit 907, interface unit 908, memory 909, and processor 910.
Those skilled in the art will appreciate that the electronic device 900 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 910 by a power management system to perform functions such as managing charge, discharge, and power consumption by the power management system. The electronic device structure shown in fig. 9 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than shown, or may combine certain components, or may be arranged in different components, which are not described in detail herein.
The processor 910 is configured to calibrate an antenna feedback power and a forward feedback power of a target antenna unit of the plurality of antenna units to obtain corresponding calibration parameters, where the plurality of antenna units includes the target antenna unit;
measuring a first antenna feedback power of the target antenna unit and a first forward feedback power;
calibrating the first antenna feedback power and the first forward feedback power through the calibration parameters to obtain a second antenna feedback power and a second forward feedback power;
and determining the voltage standing wave ratio of the target antenna unit through the second antenna feedback power and the second forward feedback power.
In the embodiment of the application, in the antenna assembly of the electronic device such as the mobile phone, a circulator is arranged between the antenna unit and the modem, and the circulator is used for replacing the Tx-Rx gating switch, so that an FBRX link of the core is formed. When the voltage standing wave ratio, namely the VSWR, is measured, the antenna feedback power and the forward feedback power are calibrated by multiplexing the FBRX link, and the VSWR is calculated based on the calibrated antenna feedback power REV and the forward feedback power FWD, so that the measurement accuracy of the VSWR can be improved.
Optionally, the processor 910 is further configured to, before measuring the first antenna feedback power and the first forward feedback power of the antenna unit, further include:
Determining a corresponding protection time slot according to frame structure information of a cell frame of the base station;
judging whether the protection time slot meets a preset condition or not;
and under the condition that the protection time slot meets the preset condition, executing the steps of measuring the first antenna feedback power and the first forward feedback power of the antenna unit.
The method and the device for determining whether to execute VSWR measurement based on the protection time slot can ensure that normal communication of the electronic equipment is not affected and ensure communication quality.
Optionally, the processor 910 is further configured to determine, according to the frame structure information, the number of protection identifiers corresponding to the cell frames and the carrier spacing of the cell frames;
and determining the protection time slot according to the number of the protection identifications and the carrier spacing.
Under the condition that the duration of the protection time slot meets the preset condition, the voltage standing wave ratio of the target antenna unit is calculated based on the calibrated second antenna feedback power and the second forward feedback power, and the measurement accuracy of the VSWR can be effectively improved.
Optionally, the processor 910 is further configured to receive first time length information, where the first time length information is time length information determined by the base station based on a physical random access channel initiated by the electronic device;
determining a target time length according to the protection time slot, the first time length information and the second time length information, wherein the second time length information is the interval time length from the switching of the electronic equipment from the receiving of the downlink signal to the sending of the uplink signal;
And judging whether the protection time slot meets the preset condition or not based on the comparison result of the target time length and the time length threshold value.
After the target time length T1 is obtained, whether the protection time slot meets the preset condition is determined according to the comparison result of the target time length T1 and the corresponding time length threshold value. If the protection time slot meets the preset condition, VSWR measurement can be performed, otherwise normal communication is kept, and the protection time slot is used for uplink and downlink buffer intervals.
Optionally, the preset conditions include: the target time length is greater than the time length threshold, and the current signal period is the antenna standing wave detection period.
In the embodiment of the present application, if the target time period is longer than the time period threshold, it is indicated that the available time amount of the protection gap satisfies the VSWR detection condition at the current time, at this time, if the signal period is the antenna standing wave detection period, it is determined that the preset condition is satisfied, the current actual antenna feedback power REV and the forward feedback power FWD are measured, and the voltage standing wave ratio of the target antenna unit is calculated based on the calibrated second antenna feedback power and second forward feedback power, so that the measurement accuracy of the VSWR can be effectively improved.
Optionally, the processor 910 is further configured to turn on a transmission path, a feedback reception path, an antenna reflected power path, and a channel sounding reference signal selection path corresponding to the target antenna unit;
Transmitting the channel sounding reference signal to the target antenna unit through the transmission path and the channel sounding reference signal selection path;
the first forward feedback power is measured through the feedback receive path and the first antenna feedback power is measured through the antenna power path.
And the SRS signal is used as a calibration sequence, and has good auto-correlation and cross-correlation properties, so that the calibration success rate can be improved, and the influence on other terminals can be reduced.
Optionally, the processor 910 is further configured to turn off a receiving path of the external low noise amplifier corresponding to the target antenna unit.
In the embodiment of the application, in order to prevent the output power of the uplink power amplifier from exceeding the bearing range of the external low noise amplifier (eLNA), before performing REV radio frequency calibration, the receiving channel of the external low noise amplifier (eLNA) is closed, so that the damage of the external low noise amplifier can be avoided, and the reliability is improved.
It should be appreciated that in embodiments of the present application, the input unit 904 may include a graphics processor (Graphics Processing Unit, GPU) 9041 and a microphone 9042, with the graphics processor 9041 processing image data of still pictures or video obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. Touch panel 9071, also referred to as a touch screen. The touch panel 9071 may include two parts, a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.
The memory 909 may be used to store software programs as well as various data. The memory 909 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 909 may include a volatile memory or a nonvolatile memory, or the memory 909 may include both volatile and nonvolatile memories. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 909 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.
Processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 910.
The embodiment of the application further provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above method embodiment, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here.
The processor is a processor in the electronic device in the above embodiment. Readable storage media include computer readable storage media such as Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic or optical disks, and the like.
The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or instructions, the processes of the above method embodiment are realized, the same technical effects can be achieved, and in order to avoid repetition, the description is omitted here.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.
The embodiments of the present application provide a computer program product, which is stored in a storage medium, and the program product is executed by at least one processor to implement the respective processes of the above method embodiments, and achieve the same technical effects, and are not repeated herein.
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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the methods of the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims (11)

1. A method for measuring a voltage standing wave ratio, applied to an electronic device, characterized in that the electronic device comprises an antenna assembly, the antenna assembly comprises a plurality of antenna units, a modem and a circulator, the circulator is arranged between the antenna units and the modem, and is used for switching the antenna between a state of receiving radio frequency signals and a state of transmitting radio frequency signals, and the method comprises the following steps:
calibrating antenna feedback power and forward feedback power of a target antenna unit in the plurality of antenna units to obtain corresponding calibration parameters, wherein the plurality of antenna units comprise the target antenna unit;
measuring a first antenna feedback power and a first forward feedback power of the target antenna unit;
calibrating the first antenna feedback power and the first forward feedback power through the calibration parameters to obtain a second antenna feedback power and a second forward feedback power;
determining the voltage standing wave ratio of the target antenna unit through the second antenna feedback power and the second forward feedback power;
the antenna unit is used for carrying out network signal interaction with the base station;
before said measuring the first antenna feedback power, and the first forward feedback power, of the antenna element, the method further comprises:
Determining a corresponding protection time slot according to the frame structure information of the cell frame of the base station;
judging whether the protection time slot meets a preset condition or not;
executing the steps of measuring the first antenna feedback power and the first forward feedback power of the antenna unit under the condition that the protection time slot meets the preset condition;
the judging whether the protection time slot meets the preset condition comprises the following steps:
receiving first time length information, wherein the first time length information is time length information determined by the base station based on a physical random access channel initiated by the electronic equipment;
determining a target time length according to the protection time slot, the first time length information and the second time length information, wherein the second time length information is the interval time length of the electronic equipment from receiving a downlink signal to transmitting an uplink signal;
and judging whether the protection time slot meets a preset condition or not based on a comparison result of the target time length and a time length threshold value.
2. The measurement method according to claim 1, wherein the determining the corresponding guard time slot according to the frame structure information of the cell frame of the base station includes:
determining the number of the protection identifications corresponding to the cell frames and the carrier spacing of the cell frames according to the frame structure information;
And determining the protection time slot according to the number of the protection identifications and the carrier spacing.
3. The measurement method according to claim 1, wherein the preset conditions include: the target time length is greater than the time length threshold, and the current signal period is an antenna standing wave detection period.
4. A method of measuring according to any one of claims 1 to 3, wherein the measuring the first antenna feedback power and the first forward feedback power of the antenna element comprises:
starting a transmitting path, a feedback receiving path, an antenna reflected power path and a channel sounding reference signal selecting path corresponding to the target antenna unit;
transmitting a channel sounding reference signal to the target antenna unit through the transmission path and the channel sounding reference signal selection path;
the first forward feedback power is measured through a feedback receive path and the first antenna feedback power is measured through the antenna power path.
5. The measurement method of claim 4, wherein before the turning on of the transmit path, the feedback receive path, the antenna reflected power path, and the channel sounding reference signal selection path corresponding to the target antenna unit, the method further comprises:
And closing a receiving passage of the external low noise amplifier corresponding to the target antenna unit.
6. A voltage standing wave ratio measurement device for an electronic device, the electronic device comprising an antenna assembly, the antenna assembly comprising a plurality of antenna elements, a modem and a circulator, the circulator being arranged between the antenna elements and the modem for switching the antenna between a receiving radio frequency signal state and a transmitting radio frequency signal state, the measurement device comprising:
the calibration module is used for calibrating the antenna feedback power and the forward feedback power of the target antenna unit to obtain corresponding calibration parameters, wherein the plurality of antenna units comprise the target antenna unit;
the measuring module is used for measuring the first antenna feedback power and the first forward feedback power of the antenna unit;
the calibration module is further configured to calibrate the first antenna feedback power and the first forward feedback power according to the calibration parameter, so as to obtain a second antenna feedback power and a second forward feedback power;
the determining module is used for determining the voltage standing wave ratio of the target antenna unit through the second antenna feedback power and the second forward feedback power;
The determining module is further used for determining a corresponding protection time slot according to frame structure information of a cell frame of the base station;
the judging module is used for judging whether the protection time slot meets the preset condition;
the measuring module is further used for executing the steps of measuring the first antenna feedback power and the first forward feedback power of the antenna unit under the condition that the protection time slot meets the preset condition;
the receiving module is used for receiving first time length information, wherein the first time length information is time length information determined by the base station based on a physical random access channel initiated by the electronic equipment;
the determining module is further configured to determine a target duration according to the protection time slot, the first duration information and the second duration information, where the second duration information is an interval duration between when the electronic device switches from receiving the downlink signal to sending the uplink signal;
the judging module is further used for judging whether the protection time slot meets the preset condition or not based on the comparison result of the target time length and the time length threshold value.
7. An electronic device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method of any one of claims 1 to 5.
8. The electronic device of claim 7, further comprising:
an antenna assembly, the antenna assembly comprising:
a plurality of antenna elements;
a modem;
and the circulator is arranged between the antenna unit and the modem and is used for enabling the antenna to be switched between a state of receiving radio frequency signals and a state of transmitting radio frequency signals.
9. The electronic device of claim 8, wherein the antenna assembly is a 5g Sub6 format antenna assembly, the antenna assembly further comprising a radio frequency integrated circuit and a coupler;
the circulator is integrated with the radio frequency integrated circuit; or (b)
The circulator is arranged at one end of the coupler far away from the antenna unit; or (b)
The coupler is arranged at the input end of the antenna unit.
10. The electronic device of claim 8, wherein the antenna assembly is a Phase2/3/5N architecture antenna assembly, the antenna assembly further comprising a multimode, multiband power amplifier and coupler;
the circulator is integrated with the multimode and multiband power amplifier; or (b)
The circulator is arranged at one end of the coupler far away from the antenna unit; or (b)
The coupler is arranged at the input end of the antenna unit.
11. The electronic device of claim 8, wherein the antenna assembly is an antenna assembly of a 5G millimeter wave architecture, the antenna assembly comprising an intermediate frequency module and a millimeter wave front module;
the circulator is arranged on the intermediate frequency module; or (b)
The circulator is arranged at one end of the millimeter wave front end module, which is close to the antenna unit.
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