CN111708056B - Signal processing method, processing device and electronic equipment - Google Patents

Signal processing method, processing device and electronic equipment Download PDF

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Publication number
CN111708056B
CN111708056B CN202010582073.1A CN202010582073A CN111708056B CN 111708056 B CN111708056 B CN 111708056B CN 202010582073 A CN202010582073 A CN 202010582073A CN 111708056 B CN111708056 B CN 111708056B
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China
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gnss
antenna
power
frequency band
radio frequency
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CN111708056A (en
Inventor
杨杰
黄辉
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/21—Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/35—Constructional details or hardware or software details of the signal processing chain
    • G01S19/37—Hardware or software details of the signal processing chain

Abstract

The application provides a signal processing method, a processing device and electronic equipment, which belong to the field of wireless communication, and the method comprises the following steps: if the antenna of the first frequency band and the GNSS antenna are detected to be in a working state at the same time, acquiring first power of signals transmitted by the antenna of the first frequency band on the GNSS antenna; if the first power is smaller than or equal to a preset threshold value, processing the GNSS signals received by the GNSS antenna as effective GNSS signals; if the first power is larger than a preset threshold, discarding GNSS signals received by the GNSS antenna in the transmitting time slot of the antenna of the first frequency band, and processing the rest GNSS signals.

Description

Signal processing method, processing device and electronic equipment
Technical Field
The present disclosure relates to the field of wireless communications technologies, and in particular, to a signal processing method, a processing apparatus, and an electronic device.
Background
GNSS (Global Navigation Satellite System, global satellite navigation system) refers to a system configured to provide position information of a ground object by using satellites orbiting the earth, which may include a plurality of GNSS satellites and at least one GNSS antenna. Today, many products, such as cell phones, tablet computers, etc., are equipped with positioning functions through built-in GNSS antennas. However, in GNSS applications, when positioning is performed, the GNSS antenna and antennas of other frequency bands, such as LTE (Long Term Evolution ) network signals, are often in a co-operating state, and the signals of other frequency bands may generate interference signals, which affects the performance of the GNSS.
Disclosure of Invention
The application provides a signal processing method, a processing device and electronic equipment, which are used for solving the problems that GNSS signals are interfered by signals in other frequency bands, so that GNSS performance is affected and the like.
In order to achieve the above object, the present application adopts the following scheme:
in a first aspect, an embodiment of the present application provides a signal processing method, including:
if the antenna of the first frequency band and the GNSS antenna are detected to be in a working state at the same time, acquiring first power of a signal transmitted by the antenna of the first frequency band on the GNSS antenna;
if the first power is smaller than or equal to a preset threshold value, processing the GNSS signals received by the GNSS antenna as effective GNSS signals;
and if the first power is larger than a preset threshold, discarding GNSS signals received by the GNSS antenna in the transmitting time slot of the antenna of the first frequency band, and processing the rest GNSS signals.
In a second aspect, an embodiment of the present application provides a radio frequency circuit of a GNSS, including:
the system comprises a GNSS radio frequency circuit, a GNSS antenna, a first frequency band radio frequency circuit, a first frequency band antenna, a feedback device, a power detection device and a controller;
the GNSS radio frequency circuit is connected with the GNSS antenna through a first passage;
the first frequency band radio frequency circuit is connected with the antenna of the first frequency band through a second path;
the feedback device is respectively connected with the first passage and the power detection device;
the power detection device comprises a first receiving pin, wherein the first receiving pin is connected with the feedback device and is used for determining first power of signals transmitted by the antenna of the first frequency band on the GNSS antenna;
the controller is connected with the power detection device and the GNSS radio frequency circuit and used for controlling the GNSS radio frequency circuit to treat GNSS signals received by the GNSS antenna as effective GNSS signals if the first power is smaller than or equal to a preset threshold value; and if the first power is larger than a preset threshold, controlling the GNSS radio frequency circuit to discard GNSS signals received by the GNSS antenna in the transmitting time slot of the antenna of the first frequency band, and processing the rest GNSS signals.
In a third aspect, an embodiment of the present application provides an electronic device, including: the radio frequency circuit of the GNSS is provided in the second aspect of the application.
In a fourth aspect, an embodiment of the present application provides a processing apparatus of a GNSS, including:
the device comprises a first acquisition module, a second acquisition module and a power control module, wherein the first acquisition module is used for acquiring first power of signals transmitted by an antenna of a first frequency band on a GNSS antenna if the antenna of the first frequency band and the GNSS antenna are detected to be in a working state at the same time;
the first processing module is used for processing the GNSS signals received by the GNSS antenna as effective GNSS signals if the first power is smaller than or equal to a preset threshold value;
and the second processing module is used for discarding the GNSS signals received by the GNSS antenna in the transmitting time slot of the antenna of the first frequency band and processing the rest GNSS signals if the first power is larger than a preset threshold.
In a fifth aspect, an embodiment of the present application provides an electronic device, including a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, where the program or the instruction is executed by the processor to implement the steps of the signal processing method provided in the embodiment of the present application.
In a sixth aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps of the signal processing method provided by the embodiments of the present application.
In a seventh aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and where the processor is configured to execute a program or instructions to implement a method according to the first aspect.
The beneficial effects that technical scheme that this application embodiment provided include at least:
when an antenna of a first frequency band and a GNSS antenna are in a working state at the same time, acquiring first power of a signal transmitted by the antenna of the first frequency band on the GNSS antenna, and if the first power is smaller than or equal to a preset threshold value, processing the GNSS signal received by the GNSS antenna as an effective GNSS signal; if the first power is greater than the preset threshold, discarding the GNSS signals received by the GNSS antenna in the transmitting time slot of the antenna of the first frequency band, and processing the rest GNSS signals.
Drawings
Fig. 1 is a flowchart of a signal processing method provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of a GNSS RF circuit according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram illustrating a structure of a GNSS radio frequency circuit according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram illustrating a structure of a GNSS radio frequency circuit according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram illustrating a processing device of a GNSS according to an embodiment of the present application;
FIG. 6 is a schematic diagram illustrating a processing device of a GNSS according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 8 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application.
Icon description:
a 21GPS radio frequency circuit; 211GPS antenna; 212a feedback device; 213 filters; 214 a low noise amplifier; 215GPS chip;
212a single pole double throw switch; 212a1 a first movable end; 212a 2a second movable end; 212a3 stationary end;
212b a directional coupler; 212b1 main line; 212b2 secondary line; 212b3 coupling port;
22 a first frequency band radio frequency circuit; 221 a first frequency band antenna; 222 multimode power amplifier; 223 power detection device;
2221 coupler; 2222 output pins; 2223 band transceiver line; 2224 intermediate frequency power amplifier; 2225 high frequency power amplifier;
2231 a first receive pin; 2232 a second receive pin; 2233 high frequency pins; 2234 intermediate frequency pins.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope 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 where appropriate such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein. 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 signal processing method, the processing device and the electronic equipment provided by the embodiment of the application are described in detail below through specific embodiments and application scenes thereof with reference to the accompanying drawings.
The signal processing method provided by the application can be used for the mobile terminal, and can improve the positioning performance of the GNSS when the communication frequency band and the GNSS frequency band are used together.
Referring to fig. 1, fig. 1 is a schematic flow chart of a signal processing method provided in an embodiment of the present application;
step 101, if it is detected that the antenna in the first frequency band and the GNSS antenna are in a working state at the same time, obtaining a first power of a signal transmitted by the antenna in the first frequency band on the GNSS antenna;
in step 101, the first frequency band may be, for example, an LTE network frequency band, or may be another communication network frequency band; the antenna of the first frequency band is used for transmitting and receiving signals of the first frequency band, and the GNSS antenna is used for receiving GNSS signals;
it should be noted that, when the antenna in the first frequency band transmits signals, the noise of the first frequency band signal Tx (transmitted) is received by the GNSS antenna (such as the antenna), which causes a decrease in the GNSS CN0 value (carrier-to-noise ratio), so that when the GNSS antenna and the first frequency band antenna work simultaneously, the GNSS signal is easily interfered by other frequency band signals, which further causes serious phenomena of inaccurate GNSS positioning or satellite loss, and affects the user experience.
Illustratively, the first frequency Band may be a certain frequency Band in an LTE (Long Term Evolution ) network, such as a B39 (B, band) frequency Band.
An exemplary GNSS (Global Navigation Satellite System, global satellite navigation system) antenna may be used to receive GPS (Global Positioning System ) signals.
102, if the first power is less than or equal to a preset threshold, processing the GNSS signals received by the GNSS antenna as valid GNSS signals;
in step 102, when the first power is less than or equal to the preset threshold value during signal transmission of the antenna in the first frequency band, the interference of the signal in the first frequency band to the GNSS signal is too small and does not affect the reception of the GNSS signal, and at this time, the GNSS signal received by the GNSS antenna may be treated as an effective GNSS signal;
step 103, if the first power is greater than the preset threshold, discarding the GNSS signals received by the GNSS antenna in the transmission time slot of the antenna in the first frequency band, and processing the remaining GNSS signals.
When the first power is greater than the preset threshold, the transmitting signal of the first frequency band will interfere with the receiving of the GNSS signal, so that the GNSS signal received by the GNSS antenna in the transmitting time slot of the antenna of the first frequency band when the first power is greater than the preset threshold needs to be discarded.
In an actual communication scene, the power of a communication signal transmitted by an antenna of a first frequency band carried by a mobile terminal is dynamically changed along with allocation of a base station, and the isolation between a GNSS antenna (such as a GPS antenna) of the mobile terminal and an antenna (such as an LTE antenna) of the first frequency band of the terminal is also changed (such as different handheld modes); when the transmitting power of the antenna of the first frequency band is smaller than a certain value or the isolation between the antenna of the first frequency band and the antenna of the first frequency band is larger than a certain value, noise caused by the signal transmitted by the antenna of the first frequency band can fall below bottom noise, and meanwhile, the receiving of the GNSS signal is not interfered by the Tx signal of the first frequency band; if in this case, the received GNSS signals are masked or discarded directly by using, for example, the BLANKING algorithm, it may result in excessive loss of GNSS signals, which may reduce GNSS positioning performance.
According to the signal processing method provided by the embodiment of the application, if the antenna of the first frequency band and the GNSS antenna are detected to be in the working state at the same time, the first power of the signal transmitted by the antenna of the first frequency band on the GNSS antenna is obtained; judging GNSS signals of an antenna transmitting time slot of a first frequency band according to a preset threshold, wherein when the first power is smaller than or equal to the preset threshold, the GNSS signals are not interfered by the Tx signals of the first frequency band, and the GNSS signals received by the GNSS antennas are treated as effective GNSS signals; when the first power is larger than a preset threshold, the first frequency band Tx signal can generate interference on the GNSS signals, the GNSS signals received by the GNSS antenna in the transmitting time slot of the antenna of the first frequency band are discarded, and the rest GNSS signals are processed; through the signal processing method, when the GNSS antenna and the antenna of the first frequency band are used together, excessive GNSS signals are not lost, so that the performance of GNSS positioning is improved, and the problem that the GNSS performance is affected due to the fact that the GNSS signals are interfered by signals of other frequency bands is solved.
Optionally, the preset threshold may be set according to actual needs.
Optionally, acquiring the first power of the signal transmitted by the antenna of the first frequency band on the GNSS antenna includes:
and in the time slot idle period of the GNSS antenna, acquiring the first power of the signal transmitted by the antenna of the first frequency band on the GNSS antenna.
The first power is acquired in the time slot idle period of the GNSS antenna, so that the detection of the first power can be kept, and the strategy of the received GNSS signal can be adjusted in time according to the change of the first power, and is discarded or processed as an effective signal;
and the first power is acquired in the time slot idle period of the GNSS antenna, so that the work of the GNSS antenna is influenced as little as possible or even not influenced when the first power is acquired.
Optionally, during the time slot idle period of the GNSS antenna, acquiring the first power of the signal transmitted by the antenna of the first frequency band on the GNSS antenna includes:
and according to a preset period, acquiring the first power of the signal transmitted by the antenna of the first frequency band on the GNSS antenna in the time slot idle period of the GNSS antenna.
Exemplary, for example, the preset period is to acquire the first power of the signal transmitted by the antenna of the first frequency band on the GNSS antenna every 0.5 seconds;
the first power is obtained through a preset period, so that the detection of the first power can be kept, and the response to the change of the first power, such as T 0 ～T n The first power of the time period is smaller than or equal to a preset threshold value, and all GNSS signals received by the GNSS antennas of the time period T0-Tn are treated as effective signals; when T is n+1 The first power acquired in the time period is greater than a preset threshold value, and then the power is obtained from T n+1 Starting at the moment, discarding GNSS signals received by a GNSS antenna in a transmitting time slot of an antenna of a first frequency band; if T n+m The first power obtained at the moment is smaller than or equal to a preset threshold value, T n+m And starting at the moment, and processing all GNSS signals received by the GNSS antenna as effective signals again.
Referring to fig. 2, the embodiment of the present application further provides a radio frequency circuit of a GNSS, where the GNSS in fig. 2 is exemplified by a GPS, and the circuit includes:
the GNSS radio frequency circuit 21, the GNSS antenna 211, the first frequency band radio frequency circuit 22, the first frequency band antenna 221, the feedback device 212 and the power detection device 223;
the GNSS radio frequency circuit 21 is connected to the GNSS antenna 221 through a first path;
the first-band radio frequency circuit 22 is connected to the first-band antenna 221 through a second path;
a feedback device 212 connected to the first path and the power detection device 223, respectively;
the power detection device 223 includes a first receiving pin 2231, where the first receiving pin 2231 is connected to the feedback device 212 and is used to determine a first power of the signal emitted by the antenna 221 in the first frequency band at the GNSS antenna 211;
the controller is connected with the power detection device and the GNSS radio frequency circuit and used for controlling the GNSS radio frequency circuit to treat GNSS signals received by the GNSS antenna as effective GNSS signals if the first power is smaller than or equal to a preset threshold value; and if the first power is larger than a preset threshold, controlling the GNSS radio frequency circuit to discard GNSS signals received by the GNSS antenna in the transmitting time slot of the antenna of the first frequency band, and processing the rest GNSS signals.
The feedback device 212 can couple the signal transmitted by the antenna 221 of the first frequency band to the Tx power at the GNSS antenna 211 and feed back the signal to the power detection device 223, and the power detection device 223 can determine the first power of the signal transmitted by the antenna 221 of the first frequency band at the GNSS antenna 211 by the power fed back by the feedback device 212; by combining the first power with the steps 102 and 103 of the signal processing method provided in the embodiments of the present application, decision can be made on the choice of GNSS signals received by the GNSS antenna (here, the choice of GNSS signals is not repeated), so as to improve the positioning performance of the GNSS.
Optionally, the power detection device 223 is further configured to determine, according to the power mapping table and the second power detected from the first receiving pin 2231, a first power of the signal transmitted by the antenna 221 of the first frequency band at the GNSS antenna 211; the power mapping relation table comprises a plurality of groups of mapping relations of first power and second power.
The feedback device 212 is connected to the first receiving pin 2231 of the power detecting device 223, receives the power fed back from the feedback device 212 through the first receiving pin 2231, uses the circuit power detected by the first receiving pin 2231 as the second power, and since the second power detected by the first receiving pin 2231 has a certain error with the real power of the first band transmission signal at the GNSS antenna 211, that is, the first power of the signal transmitted by the antenna 221 of the first band at the GNSS antenna 211, the second power cannot be directly used as the first power of the signal transmitted by the first band at the GNSS antenna 211, and when the power detecting device 223 determines the first power, the first power corresponding to the second power detected currently needs to be determined through a preset power mapping relation table of the first power and the second power, so as to determine the power at which the first band transmission signal is coupled to the GNSS antenna 211, that is, the first power.
Optionally, referring to fig. 2, power detection device 223 further includes a second receive pin 2232, first band radio frequency circuit 22 includes a coupler 2221,
coupler 2221 is connected to second receive pin 2232 and a second path;
the power detection device 223 is further configured to obtain the transmission power of the antenna 221 in the first frequency band and the feedback power detected from the second receiving pin 2232, and generate a power mapping relation table with the transmission power as the first power and the feedback power as the second power.
The second receiving pin 2232 of the power detecting device 223 has the same structure as the first receiving pin 2231, and functions of receiving feedback power and detecting circuit power, and the coupler 2221 feeds back part of the power of the antenna 221 in the first frequency band to the power detecting device 223, so as to establish a mapping relation table between the transmitting power in the first frequency band and the circuit value detected by the power detecting device 223, that is, a mapping relation table between the first power and the second power;
for example, when the transmission power of the first frequency band is 23dbm, the circuit power detected by the power detection device 223 is-20 dbm;
specifically, a power mapping relation table of the first power and the second power is generated through the signal transmitting power of the antenna 221 in the different first frequency band and the circuit power detected by the second receiving pin 2232;
it is noted that, according to the different structure and parameters of the electronic components in the first path, the parameters of the mapping relation table need to be adjusted accordingly, so as to ensure that the mapping relation between the first power and the second power can enable the terminal to obtain the correct first power;
in this way, when determining the first power, the first receiving pin 2231 detects the circuit power to obtain the second power, and the CPU searches the power mapping table according to the second power, so as to calculate the first power, and compares the obtained first power with the preset threshold value to determine whether the GNSS signal is in the alternative.
Referring to fig. 3, the feedback device 212 includes:
the single pole double throw switch 212a, the single pole double throw switch 212a includes a stationary end 212a3, a first movable end 212a1 and a second movable end 212a2, the stationary end 212a3 is connected with the GNSS antenna, the first movable end 212a1 is connected with the GNSS radio frequency circuit 21, and the second movable end 212a2 is connected with the first receiving pin 2231 of the power detection device 223;
when the power detection device 223 detects the transmitting power of the signal transmitted by the antenna 221 in the first frequency band at the GNSS antenna 211, the stationary end 212a3 of the single pole double throw switch 212a is connected to the second movable end 212a 2.
Specifically, the fixed end 212a3 of the single pole double throw switch 212a is always connected to the GNSS radio frequency circuit 21, and the fixed end 212a3 is connected to the second movable end 212a2 when the first receiving pin 2231 detects the power of the first path;
it is noted that, at the moment of detection, the stationary end 212a3 of the single pole double throw switch 212a is connected to the second moving end 212a2, and then the stationary end 212a3 is returned to the state of being connected to the first moving end 212a1, so as to keep the normal receiving and processing of the GNSS signal;
in combination with the signal processing method provided by the embodiment of the application, the first power of the signal transmitted by the antenna of the first frequency band on the GNSS antenna is obtained in the time slot idle period of the GNSS antenna, and when circuit power detection is performed by changing connection through the single-pole double-throw switch, the GNSS radio frequency circuit is necessarily disconnected with the GNSS antenna, so that the circuit power is detected in the time slot idle period of the GNSS antenna, the first power is obtained according to the power mapping relation table, and the influence of switching the single-pole double-throw switch on the GNSS signal can be reduced to the greatest extent.
Referring to fig. 4, the feedback device 212 includes;
a directional coupler 212b including a main line 212b1, a sub-line 212b2, and a coupling port 212b3;
the main line 212b1 is connected to the first path, and two ends of the main line 212b1 are respectively connected with the GNSS radio frequency circuit 21 and the GNSS antenna 211;
the sub-line 212b2 is connected to the coupling port 212b3;
coupling port 212b3 is connected to first receiving pin 2231.
Partial power of the first path can be fed back to the secondary line 212b2 through the directional coupler 212b, the second power is detected through the first receiving pin 2231, and the CPU searches the power mapping relation table to determine the first power at this time;
it should be noted that, when the feedback device 212 is the directional coupler 212b, when the power mapping relationship is generated, the second power value of the power mapping relationship table needs to be adjusted accordingly according to the parameter of the directional coupler 212b, so that the first frequency band Tx power at the GNSS antenna 211, i.e. the first power, can be obtained through the second power detected by the first receiving pin 2231 and the power mapping relationship table when the feedback device is the directional coupler 212b in the first path.
Referring to fig. 3 and 4, the power detection device 223 may be integrated in a radio frequency transceiver, such as a chip radio frequency transceiver WTR, where the WTR223 includes a high frequency pin 2233 and an intermediate frequency pin 2234 in addition to a first receiving pin 2231 and a second receiving pin 2232, and generates a first frequency band transmission signal through the WTR 223;
the first frequency band radio frequency circuit may further include a multimode power amplifier, the multimode power amplifier 222 includes an intermediate frequency power amplifier 2224, a high frequency power amplifier 2225, and a frequency band transceiver line 2223, one end of the intermediate frequency power amplifier 2224 is connected to an intermediate frequency pin 2234 of the WTR223, and the other end is connected to the frequency band transceiver line 2223; one end of the high-frequency power amplifier 2225 is connected with a high-frequency pin 2233 of the WTR223, and the other end is connected with a frequency band transceiver line 2223; the frequency band transceiver line 2223 includes a plurality of frequency band transceiver lines, and in fig. 3 and fig. 4, the B39 frequency band is taken as a first frequency band, and other frequency bands can also be taken as the first frequency band, so as to perform corresponding parameter adjustment, thereby obtaining the signal processing method provided by the application embodiment under different first frequency bands; the other end of the band transceiving line 2223 is connected to the output port 2222 for outputting the signal passing through the multimode power amplifier 222 to the antenna 221 of the first band, and receiving or transmitting the first band signal through the antenna 221 of the first band.
Referring to fig. 5, an embodiment of the present application provides a processing device 50 of a GNSS, including:
the first obtaining module 51 is configured to obtain a first power of a signal transmitted by the antenna of the first frequency band on the GNSS antenna if it is detected that the antenna of the first frequency band and the GNSS antenna are in a working state at the same time;
the first processing module 52 is configured to process, if the first power is less than or equal to a preset threshold, a GNSS signal received by the GNSS antenna as an effective GNSS signal;
the second processing module 53 is configured to discard the GNSS signals received by the GNSS antenna in the transmission time slot of the antenna in the first frequency band if the first power is greater than the preset threshold.
Optionally, referring to fig. 6, the first obtaining module 51 further includes a second obtaining sub-module 54, configured to obtain, during a time slot idle period of the GNSS antenna, a first power of a signal transmitted by the antenna of the first frequency band on the GNSS antenna.
Optionally, referring to fig. 6, the first obtaining module 51 further includes a third obtaining sub-module 55, configured to obtain, according to a preset period, a first power of a signal transmitted by an antenna of the first frequency band on the GNSS antenna during a slot idle period of the GNSS antenna.
The processing device of the GNSS in the embodiment of the invention can detect the working states of the antenna of the first frequency band and the GNSS antenna, when the antenna of the first frequency band and the GNSS antenna are in the working states, the first power of the signal transmitted by the antenna of the first frequency band on the GNSS antenna is obtained, the first power is compared with the preset threshold value to make a decision on the choice of the signal received by the GNSS antenna, and when the first power is smaller than or equal to the preset threshold value, the signal transmitted by the first frequency band does not interfere the GNSS signal; when the first power is larger than a preset threshold, the GNSS signals are interfered by the GNSS signals transmitted by the first frequency band, and the GNSS signals received by the GNSS antennas in the transmitting time slots of the antennas of the first frequency band are discarded, so that the received GNSS signals are more complete and stable, the positioning performance of the GNSS is improved, and the GNSS signals are interfered by signals of other frequency bands, so that the GNSS performance is influenced.
The processing device of the GNSS in the embodiment of the present application may be a terminal, or may be a component, an integrated circuit, or a chip in the terminal. The device may be a mobile device or a non-mobile device. By way of example, the mobile device may be a cell phone, tablet computer, notebook computer, palm computer, vehicle-mounted device, wearable device, ultra mobile personal computer (ultra-mobile personal computer, UMPC), netbook or personal digital assistant (personal digital assistant, PDA), etc., and the non-mobile device may be a 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 processing device of the GNSS 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 processing device for GNSS provided in the embodiment of the present application can implement each process implemented by the signal processing method in the method embodiment of fig. 1, and in order to avoid repetition, a description is omitted here.
Optionally, as shown in fig. 7, the embodiment of the present application further provides a schematic structural diagram of an electronic device 700, including a processor 702, a memory 701, and a program or an instruction stored in the memory 701 and capable of running on the processor 702, where the program or the instruction implements each process of the signal processing method embodiment described above when executed by the processor 702, and the process can achieve the same technical effects, and for avoiding repetition, a detailed description is omitted herein.
The electronic device in the embodiment of the application includes the mobile electronic device and the non-mobile electronic device described above.
Fig. 8 is a schematic hardware structure of an electronic device implementing an embodiment of the present application.
The electronic device 800 includes, but is not limited to: radio frequency unit 801, network module 802, audio output unit 803, input unit 804, sensor 805, display unit 806, user input unit 807, interface unit 808, memory 809, and processor 810.
Those skilled in the art will appreciate that the electronic device 800 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 810 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. 8 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 810 is configured to detect an operating state of the antenna and the GNSS antenna in the first frequency band, and obtain a first power of a signal transmitted by the antenna in the first frequency band on the GNSS antenna if the antenna and the GNSS antenna in the first frequency band are detected to be in the operating state at the same time;
the processor 810 is further configured to process, if the first power is less than or equal to a preset threshold, a GNSS signal received by the GNSS antenna as an effective GNSS signal;
the processor 810 is further configured to discard the GNSS signals received by the GNSS antenna in the transmission time slot of the antenna in the first frequency band if the first power is greater than a preset threshold.
The electronic device 800 may detect the working states of the antenna and the GNSS antenna in the first frequency band, if it is detected that the antenna and the GNSS antenna in the first frequency band are in the working states at the same time, obtain the first power of the signal transmitted by the antenna in the first frequency band on the GNSS antenna, compare the first power with a preset threshold, trade off the GNSS signal received by the GNSS antenna, and discard the GNSS signal received by the GNSS antenna in the transmitting time slot of the antenna in the first frequency band when the first power is greater than the preset threshold, and process the remaining GNSS signal; when the first power is smaller than or equal to a preset threshold value, the GNSS signals received by the GNSS antenna are treated as effective GNSS signals; therefore, when the signal transmitted by the first frequency band transmitter is coupled to the first frequency band transmitting power on the GNSS antenna, the influence of the GNSS signal on the positioning performance is avoided due to excessive discarding, the improvement of the GNSS positioning performance is realized, and the problem that the GNSS performance is influenced due to the fact that the GNSS signal is interfered by other frequency band signals is solved.
Optionally, the processor 810 is further configured to obtain, during a time slot idle period of the GNSS antenna, a first power of a signal transmitted by the antenna of the first frequency band on the GNSS antenna.
Optionally, the processor 810 is further configured to obtain, according to a preset period, a first power of a signal transmitted by an antenna of the first frequency band on the GNSS antenna during a slot idle period of the GNSS antenna.
It should be appreciated that in embodiments of the present application, the input unit 804 may include a graphics processor (Graphics Processing Unit, GPU) 8041 and a microphone 8042, with the graphics processor 8041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 807 includes a touch panel 8071 and other input devices 8072. Touch panel 8071, also referred to as a touch screen. The touch panel 8071 may include two parts, a touch detection device and a touch controller. Other input devices 8072 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 809 may be used to store software programs as well as various data including, but not limited to, application programs and an operating system. The processor 810 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 810.
The embodiment of the application also provides electronic equipment, which comprises the radio frequency circuit of the GNSS provided by the embodiment of the application.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the embodiment of the signal processing method, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.
Wherein the processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk or an optical disk, 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, and the processor is used for running a program or an instruction, so as to implement each process of the signal processing method embodiment, and achieve the same technical effect, so that repetition is avoided, and no redundant description is provided 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.
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 solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), including several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in 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 (9)

1. A method of signal processing, the method comprising:
if the antenna of the first frequency band and the GNSS antenna are detected to be in a working state at the same time, acquiring first power of a signal transmitted by the antenna of the first frequency band on the GNSS antenna;
if the first power is smaller than or equal to a preset threshold value, processing the GNSS signals received by the GNSS antenna as effective GNSS signals;
if the first power is larger than a preset threshold, discarding GNSS signals received by the GNSS antenna in a transmitting time slot of the antenna of the first frequency band, and processing the rest GNSS signals;
the obtaining the first power of the signal transmitted by the antenna of the first frequency band on the GNSS antenna includes:
and in the time slot idle period of the GNSS antenna, acquiring the first power of the signal transmitted by the antenna of the first frequency band on the GNSS antenna.
2. The method of claim 1, wherein during a slotted idle period of the GNSS antenna, obtaining a first power on the GNSS antenna of signals transmitted by the antenna of the first frequency band comprises:
and according to a preset period, acquiring the first power of the signals transmitted by the antenna of the first frequency band on the GNSS antenna in the time slot idle period of the GNSS antenna.
3. A radio frequency circuit of a GNSS, comprising:
the system comprises a GNSS radio frequency circuit, a GNSS antenna, a first frequency band radio frequency circuit, a first frequency band antenna, a feedback device, a power detection device and a controller;
the GNSS radio frequency circuit is connected with the GNSS antenna through a first passage;
the first frequency band radio frequency circuit is connected with the antenna of the first frequency band through a second path;
the feedback device is respectively connected with the first passage and the power detection device;
the power detection device comprises a first receiving pin, wherein the first receiving pin is connected with the feedback device and is used for determining first power of signals transmitted by the antenna of the first frequency band on the GNSS antenna; the method comprises the steps that a first power of a signal transmitted by an antenna of a first frequency band on the GNSS antenna is obtained when a time slot of the GNSS antenna is in an idle period;
the controller is connected with the power detection device and the GNSS radio frequency circuit and used for controlling the GNSS radio frequency circuit to treat GNSS signals received by the GNSS antenna as effective GNSS signals if the first power is smaller than or equal to a preset threshold value; and if the first power is larger than a preset threshold, controlling the GNSS radio frequency circuit to discard GNSS signals received by the GNSS antenna in the transmitting time slot of the antenna of the first frequency band, and processing the rest GNSS signals.
4. The radio frequency circuit of the GNSS of claim 3, wherein the power detection device is further configured to determine a first power of a signal transmitted by the antenna of the first frequency band on the GNSS antenna according to a power mapping table and the second power detected from the first receiving pin; the power mapping relation table comprises a plurality of groups of mapping relations of first power and second power.
5. The GNSS radio frequency circuit of claim 4, wherein the power detector further comprises a second receiving pin, the first band radio frequency circuit comprises a coupler,
the coupler is connected with the second receiving pin and the second path;
the power detection device is further configured to obtain a transmitting power of the antenna in the first frequency band and a feedback power detected from the second receiving pin, and generate a power mapping relation table by using the transmitting power as the first power and the feedback power as the second power.
6. A radio frequency circuit of a GNSS as claimed in claim 3 wherein the feedback means comprises:
the directional coupler comprises a main line, a secondary line and a coupling port;
the main line is connected to the first passage, and two ends of the main line are respectively connected with the GNSS radio frequency circuit and the GNSS antenna;
the auxiliary line is connected with the coupling port;
the coupling port is connected with the first receiving pin.
7. An electronic device, comprising: the radio frequency circuitry of a GNSS as claimed in any of the claims 3-6.
8. A processing apparatus for a GNSS, comprising:
the device comprises a first acquisition module, a second acquisition module and a power control module, wherein the first acquisition module is used for acquiring first power of signals transmitted by an antenna of a first frequency band on a GNSS antenna in a time slot idle period of the GNSS antenna if the antenna of the first frequency band and the GNSS antenna are detected to be in a working state at the same time;
the first processing module is used for processing the GNSS signals received by the GNSS antenna as effective GNSS signals if the first power is smaller than or equal to a preset threshold value;
and the second processing module is used for discarding the GNSS signals received by the GNSS antenna in the transmitting time slot of the antenna of the first frequency band and processing the rest GNSS signals if the first power is larger than a preset threshold.
9. An electronic device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which program or instruction when executed by the processor implements the steps of the signal processing method according to any of claims 1-2.
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