CN111654902A - Method and device for reducing interference to mobile terminal GPS signal and mobile terminal - Google Patents
Method and device for reducing interference to mobile terminal GPS signal and mobile terminal Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
- H04W52/244—Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
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- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
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Abstract
The application discloses a method and a device for reducing interference to a GPS signal of a mobile terminal and the mobile terminal. The method can effectively solve the problem that the upper limit value of the normal transmitting power of the mobile terminal possibly interferes the GPS signal of the mobile terminal when the mobile terminal respectively works in different frequency bands, when the mobile terminal uses the GPS function, the upper limit value of the transmitting power with a larger part can be automatically reduced and adjusted to be a proper transmitting power correction value so as to reduce the interference to the GPS signal, and therefore the positioning performance of the mobile terminal is improved.
Description
Technical Field
The application relates to the technical field of mobile communication, in particular to the technical field of mobile equipment, and specifically relates to a method and a device for reducing interference to a mobile terminal GPS signal and a mobile terminal.
Background
With the development of communication technology, mobile terminals have become indispensable electronic devices in people's daily life. The mobile terminal, for example, a mobile phone, may simultaneously support a 2G/3G/4G cellular network (cellular) and a Global Positioning System (GPS), and may perform Positioning through cellular network assisted-GPS (AGPS). At this time, the cellular network and the GPS operate simultaneously. Due to the fact that the mobile terminal has a small internal space and a complex radio frequency signal environment, when some mobile terminals use certain frequency bands of a cellular network and transmit signals with large power, transmitted harmonic signals can easily interfere with GPS signals. For example, the main antenna of the current mobile terminal generally supports the LTE B13 frequency band, the transmission frequency band of the transmitter is 777Mhz to 787Mhz, the second harmonic is 1554Mhz to 1574Mhz, and the frequency range of this harmonic is close to the communication frequency point 1575.42Mhz of the GPS signal. Therefore, when the mobile terminal performs communication in the B13 frequency band and needs to perform GPS positioning, the communication of the mobile terminal in the B13 frequency band affects the positioning performance of the GPS, and accurate positioning cannot be performed.
In order to solve the above problem, for example, in the B13 band, a technician sets a band pass filter corresponding to the band of the GPS signal in the GPS circuit at a position close to the receiving antenna, and sets a filter circuit for suppressing self-frequency multiplication in the circuit for transmitting the signal corresponding to the B13 band. However, the above method still cannot completely solve the problem of interference caused to the GPS signal when the mobile terminal transmits the signal at the maximum power (usually about 23 dB). For example, some non-linear devices radiate their double frequency signals after receiving signals transmitted when the mobile terminal is in the B13 frequency band. When a double frequency signal is received by the GPS antenna, interference with the GPS signal occurs.
In view of the above, how to more effectively reduce the interference of different frequency bands of the cellular network to the GPS signal becomes an important issue for relevant technicians and researchers.
Disclosure of Invention
The embodiment of the application provides a method for reducing interference to a mobile terminal GPS signal, a device thereof and a mobile terminal, wherein the method can effectively solve the problem that the upper limit value of normal transmitting power of the mobile terminal which respectively works in different frequency bands can interfere with the GPS signal, when the mobile terminal uses a GPS function, the upper limit value of partial larger transmitting power can be automatically reduced and adjusted to a proper transmitting power correction value, so that the interference to the GPS signal is reduced, and the positioning performance of the mobile terminal is improved.
According to an aspect of the present application, an embodiment of the present application provides a method for reducing interference to a GPS signal of a mobile terminal, where the method is applied to a mobile terminal, and the method includes: judging whether the mobile terminal is receiving GPS signals; when the mobile terminal is judged not to receive the GPS signal, acquiring an upper limit value of normal transmitting power arranged in a first register of the mobile terminal, and carrying out communication according to the upper limit value of the normal transmitting power; and when the mobile terminal is judged to be receiving the GPS signal, acquiring a first correction value of the normal transmitting power stored in a first register of the mobile terminal according to a first value of an identification bit of a power upper limit parameter state of the mobile terminal, and communicating according to the first correction value of the normal transmitting power, wherein the first correction value is obtained after the upper limit value of the normal transmitting power of the mobile terminal is adjusted, and the first correction value is smaller than or equal to the upper limit value.
On the basis of the technical scheme, the method can be further improved.
In some embodiments of the present application, before the step of determining whether the mobile terminal is receiving the GPS signal, the method further comprises: acquiring upper limit values of normal transmitting power of the mobile terminal when the mobile terminal respectively works in different frequency bands through a second register of the mobile terminal; defining a second value of an identification bit of a power upper limit parameter state of the mobile terminal; and storing the upper limit value of the normal transmitting power of the mobile terminal when the mobile terminal respectively works in different frequency bands to a first register of the mobile terminal, and associating the upper limit value with a second value of the identification bit of the power upper limit parameter state of the mobile terminal.
In some embodiments of the present application, before the step of determining whether the mobile terminal is receiving the GPS signal, the method further comprises: judging whether the interference degree of the GPS signal sensitivity of the mobile terminal respectively working in different frequency bands is greater than a threshold value; when the interference degree of the GPS signal sensitivity is judged to be greater than the threshold value, adjusting the upper limit value to a corresponding first correction value, and associating the first correction value with a first value of an identification bit of the power upper limit parameter state of the mobile terminal; and when the interference degree of the GPS signal sensitivity is judged to be less than or equal to the threshold value, maintaining the upper limit value unchanged, assigning the upper limit value as a first correction value, and associating the first correction value with the first value of the identification bit of the power upper limit parameter state of the mobile terminal.
In some embodiments of the present application, in the step of determining that the mobile terminal is receiving a GPS signal and communicating according to the first correction value of the normal transmission power, the method further includes: judging whether the mobile terminal communicates through an upper antenna; and when the mobile terminal is judged to be communicated through the upper antenna, the antenna of the mobile terminal is switched to the lower antenna so as to increase the distance between the antenna of the mobile terminal and the GPS antenna of the mobile terminal.
In some embodiments of the present application, after determining that the mobile terminal does not receive the GPS signal, the method further includes: acquiring a second correction value of the normal transmitting power which is associated with a third value of the identification bit of the power upper limit parameter state of the mobile terminal and corresponds to the electromagnetic wave absorption ratio; and communicating according to the second correction value of the normal transmission power.
According to another aspect of the present application, an embodiment of the present application provides an apparatus for reducing interference to a mobile terminal GPS signal, the apparatus comprising: the GPS signal judging module is used for judging whether the mobile terminal receives the GPS signal; the first transmission power upper limit value acquisition module is used for acquiring an upper limit value of normal transmission power in a first register of the mobile terminal when the mobile terminal is judged not to receive the GPS signal; the first communication module is connected with the first transmitting power upper limit value acquisition module and used for carrying out communication according to the upper limit value of the normal transmitting power; the transmission power first correction value acquisition module is used for acquiring a first correction value of normal transmission power stored in a first register of the mobile terminal according to a first value of an identification bit of a power upper limit parameter state of the mobile terminal when the mobile terminal is judged to receive a GPS signal, wherein the first correction value is obtained after the upper limit value of the normal transmission power of the mobile terminal is adjusted, and the first correction value is smaller than or equal to the upper limit value; and the second communication module is connected with the first correction value acquisition module of the transmitting power and is used for carrying out communication according to the first correction value of the normal transmitting power.
In some embodiments of the present application, the apparatus further comprises: a second transmission power upper limit value obtaining module, configured to obtain, through a second register of the mobile terminal, upper limit values of normal transmission power when the mobile terminal operates in different frequency bands respectively; a power upper limit parameter identification bit definition module, configured to define a second value of the identification bit of the power upper limit parameter state of the mobile terminal; the transmission power upper limit value storage module is used for storing the upper limit value of the normal transmission power of the mobile terminal when the mobile terminal respectively works in different frequency bands to a first register of the mobile terminal; and the first power upper limit parameter identification bit association module is used for associating the upper limit value with a second value of the identification bit of the power upper limit parameter state of the mobile terminal.
In some embodiments of the present application, the apparatus further comprises: the threshold judging module is used for judging whether the interference degree of the GPS signal sensitivity of the mobile terminal when the mobile terminal works in different frequency bands is larger than a threshold value or not; the upper limit value adjusting module is used for adjusting the upper limit value to a corresponding first correction value when the interference degree of the GPS signal sensitivity is judged to be greater than the threshold value; a second power upper limit parameter flag associating module, configured to associate the first correction value with a first value of a flag of a power upper limit parameter state of the mobile terminal; and the upper limit value assignment module is used for keeping the upper limit value unchanged and assigning the upper limit value as a first correction value when the interference degree of the GPS signal sensitivity is judged to be less than or equal to the threshold value.
In some embodiments of the present application, the apparatus further comprises: the transmission power second correction value acquisition module is used for acquiring a second correction value of the normal transmission power which is associated with a third value of the identification bit of the power upper limit parameter state of the mobile terminal and corresponds to the electromagnetic wave absorption ratio; and the third communication module is connected with the transmission power second correction value acquisition module and is used for carrying out communication according to the second correction value of the normal transmission power.
According to another aspect of the present application, an embodiment of the present application provides a mobile terminal including the above apparatus for reducing interference to a GPS signal of the mobile terminal.
Compared with the prior art, the method, the device and the mobile terminal for reducing the GPS signal interference of the mobile terminal provided by the embodiment of the application can effectively solve the problem that the upper limit value of the normal transmitting power of the mobile terminal when the mobile terminal works in different frequency bands can interfere with the GPS signal, and when the mobile terminal uses the GPS function, the upper limit value of the partial large transmitting power can be automatically reduced and adjusted to be the proper transmitting power correction value so as to reduce the GPS signal interference and improve the positioning performance of the mobile terminal.
Drawings
The technical solutions and advantages of the present application will become apparent from the following detailed description of specific embodiments of the present application when taken in conjunction with the accompanying drawings.
Fig. 1 is a flowchart illustrating steps of a method for reducing interference to a GPS signal of a mobile terminal according to an embodiment of the present application.
Fig. 2 is a preceding step of step S110 shown in fig. 1.
Fig. 3 is a preceding step of step S110 shown in fig. 1.
FIG. 4 is a flowchart of steps of another embodiment of step 130 shown in FIG. 1.
FIG. 5 is a flowchart of steps of yet another embodiment of step 130 shown in FIG. 1.
Fig. 6 is a schematic structural framework diagram of an apparatus for reducing interference to a GPS signal of a mobile terminal according to an embodiment of the present application.
Fig. 7 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application.
Fig. 8 is a schematic structural diagram of another specific structure of a mobile terminal according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," "third," and the like in the description and in the claims of the present application and in the above-described drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the objects so described are interchangeable under appropriate circumstances. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
In particular embodiments, the drawings discussed below and the various embodiments used to describe the principles of the present disclosure are by way of illustration only and should not be construed to limit the scope of the present disclosure. Those skilled in the art will understand that the principles of the present application may be implemented in any suitably arranged system. Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. Further, a terminal according to an exemplary embodiment will be described in detail with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements.
The terminology used in the detailed description is for the purpose of describing particular embodiments only and is not intended to be limiting of the concepts of the present application. Unless the context clearly dictates otherwise, expressions used in the singular form encompass expressions in the plural form. In the present specification, it will be understood that terms such as "including," "having," and "containing" are intended to specify the presence of the features, integers, steps, acts, or combinations thereof disclosed in the specification, and are not intended to preclude the presence or addition of one or more other features, integers, steps, acts, or combinations thereof. Like reference symbols in the various drawings indicate like elements.
Referring to fig. 1, fig. 2 and fig. 3, an embodiment of the present invention provides a method for reducing interference to a GPS signal of a mobile terminal, which is suitable for a mobile terminal. The mobile terminal may be a mobile phone, a tablet computer, a personal digital computer, etc., but is not limited thereto.
Referring to fig. 1, the method includes: judging whether the mobile terminal is receiving GPS signals; when the mobile terminal is judged not to receive the GPS signal, acquiring an upper limit value of normal transmitting power arranged in a first register of the mobile terminal, and carrying out communication according to the upper limit value of the normal transmitting power; and when the mobile terminal is judged to be receiving the GPS signal, acquiring a first correction value of the normal transmitting power stored in a first register of the mobile terminal according to a first value of an identification bit of a power upper limit parameter state of the mobile terminal, and communicating according to the first correction value of the normal transmitting power, wherein the first correction value is obtained after the upper limit value of the normal transmitting power of the mobile terminal is adjusted, and the first correction value is smaller than or equal to the upper limit value.
Specifically, step S110: and judging whether the mobile terminal receives the GPS signal.
The mobile terminal, such as a mobile phone, can simultaneously support a 2G/3G/4G cellular network (cellular) and a Global Positioning System (GPS). That is, the mobile terminal can implement a positioning function through GPS in addition to conventional communication functions (e.g., voice communication and digital communication). When the mobile terminal carries out communication, the positioning service can be realized.
Since GPS signals from satellites are generally weak, the mobile terminal is very susceptible to interference from cellular communication signals (especially in certain frequency bands, such as the B13 band) when receiving GPS signals, so that the received GPS signals are interfered, and thus positioning service cannot be performed, or positioning is inaccurate. Therefore, when the positioning service of the GPS is used, the upper limit value of the normal transmission power corresponding to a part of the frequency band of the cellular network needs to be adjusted to avoid the situation that the degree of interference on the sensitivity of the GPS signal is too high. When the positioning service of the GPS is not used, the upper limit value of the normal transmitting power does not need to be adjusted.
It should be noted that, after being turned on, the mobile terminal will automatically detect whether the GPS signal is being received. Detecting whether a GPS signal is being received, i.e., determining whether the GPS function is turned on, may be determined, for example, by determining whether a function persistence. When the return value of the function is false, it indicates that the GPS function is not turned on, i.e., does not receive GPS signals. When the return value of the function is true, it indicates that the GPS function is turned on, i.e., the GPS signal can be received. The function persistence. driver. sys. gnsstart is an existing function of the upper layers of the android system. When the return value of the function changes, the function is automatically reported to an application layer of the android system, so that steps S110 to S130 described below are executed.
Step S120: and when the mobile terminal is judged not to receive the GPS signal, acquiring an upper limit value of normal transmitting power in a first register of the mobile terminal, and carrying out communication according to the upper limit value of the normal transmitting power.
The mobile terminal, such as a handset, has a plurality of different communication bands. Each communication band corresponds to an upper limit value (or maximum transmission power) of normal transmission power. It should be noted that, experiments show that, when the mobile terminal respectively operates in different communication frequency bands and performs communication with the upper limit of the normal transmission power, the sensitivity of the mobile terminal receiving the GPS signal has a corresponding interference level. See table 1 below for details.
Table 1 above is stored in the first register. In actual operation, the mobile terminal may call table 1 stored in the first register and communicate in a third register of the mobile terminal according to the upper limit value of the normal transmit power.
Continuing to refer to fig. 1, in step S130, when it is determined that the mobile terminal is receiving a GPS signal, according to the first value of the flag bit of the power upper limit parameter state of the mobile terminal, obtaining a first correction value of the normal transmission power stored in the first register of the mobile terminal, and performing communication according to the first correction value of the normal transmission power, where the first correction value is obtained by adjusting the upper limit value of the normal transmission power of the mobile terminal, and the first correction value is smaller than or equal to the upper limit value.
When the mobile terminal is judged to receive the GPS signal, a first correction value of the normal transmitting power stored in a first register of the mobile terminal is obtained according to a first value of an identification bit of a power upper limit parameter state of the mobile terminal. It should be noted that the flag of the power upper limit parameter state of the mobile terminal is equivalent to an index flag. The flag of the power upper limit parameter state includes a first value, a second value, a third value, and a fourth value, but is not limited thereto and may be customized. The first value, the second value, the third value, and the fourth value of the flag bit of the power upper limit parameter state may be represented by 0, 1, 2, and 3, and may also be represented by A, B, C, D, but are not limited thereto.
In this embodiment, the first value of the flag of the power upper limit parameter state is 1 for association with table 2 described below. Since table 2 is the first correction value of the normal transmission power stored in the first register of the mobile terminal, the first correction value of the normal transmission power stored in the first register of the mobile terminal may be obtained according to the first value of the flag bit of the power upper limit parameter state of the mobile terminal. For a detailed description of table 2, see below.
Referring to fig. 2, in some embodiments of the present application, before the step of determining whether the mobile terminal is receiving the GPS signal, that is, before step S110, the method further includes:
and step S101, acquiring the upper limit values of the normal transmitting power of the mobile terminal when the mobile terminal respectively works in different frequency bands through a second register of the mobile terminal.
Step S102, defining a second value of the identification bit of the power upper limit parameter state of the mobile terminal.
Step S103, storing the upper limit value of the normal transmitting power of the mobile terminal when the mobile terminal respectively works in different frequency bands to a first register of the mobile terminal, and associating the upper limit value with a second value of the identification bit of the power upper limit parameter state of the mobile terminal.
The steps S101 to S103 are optional steps. The steps may be performed as a preset operation of a first register of the mobile terminal. That is, the relevant data in the first register of the mobile terminal may be pre-recorded in the mobile terminal before the mobile terminal leaves the factory, or the data required by the first register may be automatically called from another component (for example, the second register, but not limited thereto) when the mobile terminal is used for powering on.
And in the mobile terminal, defining a second value of the identification bit of the power upper limit parameter state of the mobile terminal. For example, the second value of the flag bit of the power upper limit parameter state is 0, but is not limited thereto, and only needs to be different from the first value. Then, the cellular network frequency band and the data of the corresponding upper limit value of the normal transmission power in table 1 are stored in the first register. Therefore, the upper limit values of the normal transmitting power when the mobile terminal respectively operates in different frequency bands can be obtained according to the second value of the identification bit of the power upper limit parameter state of the mobile terminal. It should be noted that these upper limit values can be used for the implementation of step S120.
Referring to fig. 3, in some embodiments of the present application, before the step of determining whether the mobile terminal is receiving the GPS signal, i.e., before step S110, the method may include:
and step S106, judging whether the interference degree of the GPS signal sensitivity of the mobile terminal respectively working in different frequency bands is larger than a threshold value.
And step S107, when the interference degree of the GPS signal sensitivity is judged to be greater than the threshold value, adjusting the upper limit value to a corresponding first correction value, and associating the first correction value with a first value of the identification bit of the power upper limit parameter state of the mobile terminal.
And step S108, when the interference degree of the GPS signal sensitivity is judged to be less than or equal to the threshold value, keeping the upper limit value unchanged, assigning the upper limit value as a first correction value, and associating the first correction value with the first value of the identification bit of the power upper limit parameter state of the mobile terminal.
The implementation of steps S106 to S108 may be performed before the implementation of steps S101 to S103, after the implementation of steps S101 to S103, or simultaneously with the implementation of steps S101 to S103.
Further, in step S106, it may be determined whether the degree of interference on the sensitivity of the GPS signal when the mobile terminal respectively operates in different frequency bands is greater than a threshold according to the data in table 1. For example, the threshold may be 0.5 dBm. When the degree of interference on the sensitivity of the GPS signal is 0.5dBm, the mobile terminal can be ensured to normally receive the GPS signal, thereby realizing the positioning service of the GPS and achieving the effect of accurate positioning.
In step S107, when it is determined that the degree of interference on the sensitivity of the GPS signal is greater than the threshold, the upper limit value is adjusted to a corresponding first correction value, and the first correction value is associated with a first value of the flag of the power upper limit parameter state of the mobile terminal.
At this time, the upper limit value is reduced to a corresponding first correction value. For example, for the LTE B13 band, the upper limit value of the normal transmission power is 23.5dBm, and then the upper limit value is adjusted to a first correction value of 19.5 dBm. Therefore, when the mobile terminal works in an LTE B13 frequency band, the interference degree of the sensitivity of receiving GPS signals is 0.5 dBm. For another example, for the GSM 1900 band, the upper limit value of the normal transmission power is 33 dBm. Then, the upper limit value is adjusted to the first correction value, which is 31.5dBm, so that the interference degree of the sensitivity of receiving the GPS signal is 0.5dBm when the mobile terminal operates in the GSM 1900 frequency band.
And after adjusting the upper limit value to the corresponding first correction value, associating the first correction value with a first value of the identification bit of the power upper limit parameter state of the mobile terminal. In this way, when step S130 is implemented, the corresponding first correction value is obtained according to the first value of the flag bit of the power upper limit parameter state of the mobile terminal, and communication is performed according to the first correction value of the normal transmission power, so that positioning service of a GPS can be implemented, and an accurate positioning effect is achieved.
Continuing to refer to fig. 3, in step S108, when it is determined that the degree of interference on the sensitivity of the GPS signal is less than or equal to the threshold, the upper limit value is maintained unchanged, the upper limit value is assigned as a first correction value, and the first correction value is associated with the first value of the flag bit of the power upper limit parameter state of the mobile terminal.
For example, for the LTE B7 band, the upper limit value of the normal transmit power is 23.5 dBm. Since the degree of interference on the sensitivity of the GPS signal is 0.5dBm, which is equal to a preset safety threshold, the upper limit value of the normal transmission power can be maintained, and the upper limit value is assigned as a first correction value, and the first correction value is associated with the first value of the flag bit of the power upper limit parameter state of the mobile terminal. In this way, when step S130 is implemented, according to the first value of the flag bit of the power upper limit parameter state of the mobile terminal, the corresponding first correction value is obtained, and communication is performed according to the first correction value of the normal transmission power, so that positioning service of the GPS can be realized, and an accurate positioning effect is achieved.
In the process of performing step S106 to step S108, table 2 as follows may be constructed.
It should be noted that, in actual operation, the mobile terminal may call table 2 stored in the first register and communicate in the third register of the mobile terminal according to the first correction value of the normal transmission power.
In addition, if the mobile terminal performs communication with real-time power lower than the upper limit of the normal transmission power, for example, when operating in the WCDMA B5 band, the real-time power is 5dBm, and if the mobile terminal is to receive GPS signals, as can be seen from table 1 and table 2 above, the upper limit of the normal transmission power is 23.5dBm, and the first correction value of the normal transmission power is 22.5dBm, so that the mobile terminal with real-time power of 5dBm will not be interfered when receiving GPS signals.
In addition, in addition to adjusting the communication frequency band of the mobile terminal by performing the above step S130, the degree of interference on the sensitivity of the GPS signal can be ensured to be within a safe range in the following manner.
Referring to fig. 4, for example, in some embodiments of the present application, the step of communicating according to the first correction value of the normal transmission power when it is determined that the mobile terminal is receiving a GPS signal further includes:
step S410: and judging whether the mobile terminal carries out communication through an upper antenna.
Step S420: and when the mobile terminal is judged to be communicated through the upper antenna, the antenna of the mobile terminal is switched to the lower antenna so as to increase the distance between the antenna of the mobile terminal and the GPS antenna of the mobile terminal.
In step S410, it is determined whether the mobile terminal performs communication through the upper antenna. In this embodiment, the mobile terminal includes an upper antenna, a lower antenna, and a GPS antenna. The upper antenna and the GPS antenna are both arranged at the top of the mobile terminal, and the lower antenna is arranged at the bottom of the mobile terminal.
In step S420, when it is determined that the upper antenna is used for communication, the antenna of the mobile terminal may be switched to the lower antenna to increase the distance between the antenna of the mobile terminal and the GPS antenna of the mobile terminal, so as to reduce interference of the mobile terminal with receiving GPS signals when the mobile terminal operates in the cellular network frequency band, thereby ensuring a positioning service of the GPS and achieving an accurate positioning effect.
Referring to fig. 5, for example, in some embodiments of the present application, after determining that the mobile terminal does not receive the GPS signal, the method further includes:
step S510, obtaining a second correction value of the normal transmitting power, which is associated with the third value of the flag of the power upper limit parameter state of the mobile terminal and corresponds to the electromagnetic wave absorption ratio.
In addition to the degree of interference to the GPS signal sensitivity being related to the upper limit value of the normal transmission power of the mobile terminal, the electromagnetic wave absorption ratio (SAR) is also related to the upper limit value of the normal transmission power of the mobile terminal.
Considering the safety of the user using the mobile terminal, especially the magnitude of the electromagnetic wave absorption ratio affects the safety of the user (for example, the safety of the head of a human body), therefore, the upper limit value of the normal transmission power also needs to be adjusted appropriately.
Storing, in a first register of the mobile terminal, a second correction value of the normal transmission power associated with a third value of the identification bit of the power cap parameter status of the mobile terminal. The second correction values for the normal transmit power may be obtained in the same manner as the first correction values for the normal transmit power. For example, the information may be pre-stored in a factory or may be obtained by calling from other components after the mobile terminal is turned on.
And step S520, communication is carried out according to the second correction value of the normal transmitting power.
In practical operation, the mobile terminal may call the second correction value stored in the first register, and in a third register of the mobile terminal, communication is performed according to the second correction value of the normal transmission power, so that the mobile terminal can perform signal transmission at an appropriate transmission power on the premise of ensuring the safety of a user.
Referring to fig. 6, an embodiment of the present application provides an apparatus for reducing interference to a GPS signal of a mobile terminal, the apparatus including: the device comprises a GPS signal judging module 610, a first transmitting power upper limit value obtaining module 620, a first communication module 630, a transmitting power first correction value obtaining module 640 and a second communication module 650.
The GPS signal determining module 610 is configured to determine whether the mobile terminal is receiving a GPS signal. A mobile terminal, such as a mobile phone, can simultaneously support a 2G/3G/4G cellular network (cellular) and a Global Positioning System (GPS). That is, the mobile terminal can implement a positioning function through GPS in addition to conventional communication functions (e.g., voice communication and digital communication). When the mobile terminal carries out communication, the positioning service can be realized. Since GPS signals from satellites are generally weak, the mobile terminal is very susceptible to interference from cellular communication signals (especially in certain frequency bands, such as the B13 band) when receiving GPS signals, so that the received GPS signals are interfered, and thus positioning service cannot be performed, or positioning is inaccurate. Therefore, when the positioning service of the GPS is used, the upper limit value of the normal transmission power corresponding to a part of the frequency band of the cellular network needs to be adjusted to avoid the situation that the degree of interference on the sensitivity of the GPS signal is too high. When the positioning service of the GPS is not used, the upper limit value of the normal transmission power does not need to be adjusted.
The first transmit power upper limit value obtaining module 620 is configured to obtain an upper limit value of a normal transmit power in a first register of the mobile terminal when it is determined that the mobile terminal does not receive a GPS signal.
The first communication module 630 is connected to the first transmit power upper limit value obtaining module 620, and is configured to perform communication according to the upper limit value of the normal transmit power.
The transmission power first correction value obtaining module 640 is configured to, when it is determined that the mobile terminal is receiving a GPS signal, obtain, according to a first value of an identification bit of a power upper limit parameter state of the mobile terminal, a first correction value of normal transmission power stored in a first register of the mobile terminal, where the first correction value is obtained by adjusting an upper limit value of normal transmission power of the mobile terminal, and the first correction value is smaller than or equal to the upper limit value.
The second communication module 650 is connected to the first correction value of transmission power obtaining module 640, and is configured to perform communication according to the first correction value of normal transmission power.
In some embodiments of the present application, the apparatus further comprises: a second transmission power upper limit value obtaining module 601, a power upper limit parameter identification bit defining module 602, a transmission power upper limit value storing module 603, and a first power upper limit parameter identification bit associating module 604.
Specifically, the second transmit power upper limit value obtaining module 601 is configured to obtain, through a second register of the mobile terminal, upper limit values of normal transmit powers when the mobile terminal respectively operates in different frequency bands.
The power upper limit parameter flag defining module 602 is configured to define a second value of the flag of the power upper limit parameter status of the mobile terminal.
The transmission power upper limit value storage module 603 is configured to store the upper limit value of the normal transmission power of the mobile terminal when the mobile terminal respectively operates in different frequency bands to a first register of the mobile terminal.
A first power upper limit parameter flag associating module 604, configured to associate the upper limit value with a second value of the flag of the power upper limit parameter state of the mobile terminal.
In some embodiments of the present application, the apparatus further comprises: a threshold value judging module 605, an upper limit value adjusting module 606, a second power upper limit parameter identification bit associating module 607, and an upper limit value assigning module 608.
Specifically, the threshold determining module 605 is configured to determine whether the degree of interference on the sensitivity of the GPS signal when the mobile terminal respectively operates in different frequency bands is greater than a threshold. For example, the threshold may be 0.5 dBm. When the degree of interference on the sensitivity of the GPS signal is 0.5dBm, the mobile terminal can be ensured to normally receive the GPS signal, thereby realizing the positioning service of the GPS and achieving the effect of accurate positioning.
The upper limit value adjusting module 606 is configured to adjust the upper limit value to a corresponding first correction value when it is determined that the degree of interference on the sensitivity of the GPS signal is greater than the threshold value. For example, for the LTE B13 band, the upper limit value of the normal transmission power is 23.5dBm, and then the upper limit value is adjusted to a first correction value of 19.5 dBm. Therefore, when the mobile terminal works in an LTE B13 frequency band, the interference degree of the sensitivity of receiving GPS signals is 0.5 dBm. For another example, for the GSM 1900 band, the upper limit value of the normal transmission power is 33 dBm. Then, the upper limit value is adjusted to the first correction value, which is 31.5dBm, so that the interference degree of the sensitivity of receiving the GPS signal is 0.5dBm when the mobile terminal operates in the GSM 1900 frequency band.
The second power upper limit parameter flag associating module 607 is configured to associate the first modification value with the first value of the flag of the power upper limit parameter status of the mobile terminal.
The upper limit value assignment module 608 is configured to, when it is determined that the degree of interference on the sensitivity of the GPS signal is less than or equal to the threshold, maintain the upper limit value unchanged, and assign the upper limit value as a first correction value. For example, for the LTE B7 band, the upper limit value of the normal transmit power is 23.5 dBm. Since the degree of interference on the sensitivity of the GPS signal is 0.5dBm, which is equal to a preset safety threshold, the upper limit value of the normal transmission power can be maintained, and the upper limit value is assigned as a first correction value, and the first correction value is associated with the first value of the flag bit of the power upper limit parameter state of the mobile terminal. Therefore, when the first correction value of the transmission power acquiring module 640 and the second communication module 650 are called, the corresponding first correction value can be acquired according to the first value of the flag bit of the power upper limit parameter state of the mobile terminal, and communication is performed according to the first correction value of the normal transmission power, so that the positioning service of the GPS can be realized, and an accurate positioning effect can be achieved.
In some embodiments of the present application, the apparatus further comprises: a transmission power second correction value obtaining module 660 and a third communication module 670.
Specifically, the transmission power second correction value obtaining module 660 is configured to obtain a second correction value of the normal transmission power, which is associated with the third value of the flag of the power upper limit parameter state of the mobile terminal and corresponds to the electromagnetic wave absorption ratio. In addition to the degree of interference to the GPS signal sensitivity being related to the upper limit value of the normal transmission power of the mobile terminal, the electromagnetic wave absorption ratio (SAR) is also related to the upper limit value of the normal transmission power of the mobile terminal. Considering the safety of the user using the mobile terminal, especially the magnitude of the electromagnetic wave absorption ratio affects the safety of the user (for example, the safety of the head of a human body), therefore, the upper limit value of the normal transmission power also needs to be adjusted appropriately. Further, in a first register of the mobile terminal, a second correction value of the normal transmission power associated with a third value of the identification bit of the power ceiling parameter status of said mobile terminal is stored. The second correction values for the normal transmit power may be obtained in the same manner as the first correction values for the normal transmit power. For example, the information may be pre-stored in a factory or may be obtained by calling from other components after the mobile terminal is turned on.
The third communication module 670 is connected to the transmission power second correction value obtaining module 660, and is configured to perform communication according to the second correction value of the normal transmission power.
The functional modules in the device for reducing the interference to the GPS signal of the mobile terminal can be arranged in the mobile terminal, can also be arranged in a server communicated with the mobile terminal, or can be arranged in third-party equipment.
Referring to fig. 7, an embodiment of the present application further provides a mobile terminal 700, where the mobile terminal 700 includes the above-mentioned apparatus for reducing interference to a GPS signal of the mobile terminal. The mobile terminal 700 may be a mobile phone, a tablet computer, or the like. As shown in fig. 7, mobile terminal 700 includes a processor 601, a memory 702. The processor 701 is connected to the memory 702.
The processor 701 is a control center of the mobile terminal 700, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by running or loading an application program stored in the memory 702 and calling data and instructions stored in the memory 702, thereby integrally monitoring the mobile terminal.
In this embodiment, the mobile terminal 700 is provided with a plurality of memory partitions, where the plurality of memory partitions includes a system partition and a target partition, and the processor 701 in the mobile terminal 700 loads instructions corresponding to processes of one or more application programs into the memory 702 according to the following steps, and the processor 701 runs the application programs stored in the memory 702, so as to implement various functions:
judging whether the mobile terminal is receiving GPS signals;
when the mobile terminal is judged not to receive the GPS signal, acquiring an upper limit value of normal transmitting power arranged in a first register of the mobile terminal, and carrying out communication according to the upper limit value of the normal transmitting power; and
when the mobile terminal is judged to be receiving the GPS signal, according to a first value of an identification bit of a power upper limit parameter state of the mobile terminal, obtaining a first correction value of normal transmitting power stored in a first register of the mobile terminal, and communicating according to the first correction value of the normal transmitting power, wherein the first correction value is obtained after the upper limit value of the normal transmitting power of the mobile terminal is adjusted, and the first correction value is smaller than or equal to the upper limit value.
Fig. 8 is a block diagram illustrating a specific structure of a mobile terminal 800 according to an embodiment of the present application, where the mobile terminal 800 may be used to implement the method for reducing the interference to the GPS signal of the mobile terminal provided in the foregoing embodiments. The mobile terminal 800 may be a mobile phone or a tablet. The mobile terminal further comprises the following components.
The RF circuit 810 is used for receiving and transmitting electromagnetic waves, and performing interconversion between the electromagnetic waves and electrical signals, so as to communicate with a communication network or other devices. RF circuit 810 may include various existing circuit elements for performing these functions, such as an antenna, a radio frequency transceiver, a digital signal processor, an encryption/decryption chip, a Subscriber Identity Module (SIM) card, memory, and so forth. The RF circuit 810 may communicate with various networks such as the internet, an intranet, a wireless network, or with other devices over a wireless network. The wireless network may comprise a cellular telephone network, a wireless local area network, or a metropolitan area network. The Wireless network may use various Communication standards, protocols and technologies, including but not limited to Global System for Mobile Communication (GSM), Enhanced Mobile Communication (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Wireless Fidelity (Wi-Fi) (e.g., IEEE802.11a, IEEE802.11 b, IEEE802.11g and/or IEEE802.11 n), Voice over Internet Protocol (VoIP), world wide Microwave Access (Microwave for Wireless), Max-1, and other short message protocols, as well as any other suitable communication protocols, and may even include those that have not yet been developed.
The memory 820 may be used for storing software programs and modules, such as program instructions/modules corresponding to the method for reducing the interference to the GPS signals of the mobile terminal in the above-mentioned embodiments, and the processor 880 executes various functional applications and data processing by running the software programs and modules stored in the memory 820, so as to implement the function of reducing the interference to the GPS signals of the mobile terminal. The memory 820 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 820 may further include memory located remotely from the processor 880, which may be connected to the mobile terminal 800 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input unit 830 may be used to receive input numeric or character information and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. In particular, the input unit 830 may include a touch-sensitive surface 831 as well as other input devices 832. The touch-sensitive surface 831, also referred to as a touch display screen or a touch pad, may collect touch operations by a user on or near the touch-sensitive surface 831 (e.g., operations by a user on or near the touch-sensitive surface 831 using a finger, a stylus, or any other suitable object or attachment) and drive the corresponding connection device according to a predefined program. Alternatively, the touch-sensitive surface 831 can include two portions, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts it to touch point coordinates, and sends the touch point coordinates to the processor 880, and can receive and execute commands from the processor 880. In addition, the touch-sensitive surface 831 can be implemented using various types of resistive, capacitive, infrared, and surface acoustic waves. The input unit 830 may include other input devices 832 in addition to the touch-sensitive surface 831. In particular, other input devices 832 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.
The display unit 840 may be used to display information input by or provided to the user and various graphical user interfaces of the mobile terminal 800, which may be made up of graphics, text, icons, video, and any combination thereof. The Display unit 840 may include a Display panel 841, and the Display panel 841 may be configured in the form of an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like, as an option. Further, touch-sensitive surface 831 can overlay display panel 841 and, upon detecting a touch operation on or near touch-sensitive surface 831, communicate to processor 880 to determine the type of touch event, whereupon processor 880 can provide a corresponding visual output on display panel 841 in accordance with the type of touch event. Although in FIG. 8, touch-sensitive surface 831 and display panel 841 are implemented as two separate components to implement input and output functions, in some embodiments, touch-sensitive surface 831 may be integrated with display panel 841 to implement input and output functions.
The mobile terminal 800 may also include at least one sensor 850, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display panel 841 according to the brightness of ambient light, and a proximity sensor that may turn off the display panel 841 and/or backlight when the mobile terminal 800 is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when the mobile phone is stationary, and can be used for applications of recognizing the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which may be further configured on the mobile terminal 800, further description is omitted here.
The mobile terminal 800, which may assist the user in emailing, browsing web pages, accessing streaming media, etc., through the transport module 870 (e.g., a Wi-Fi module), provides the user with wireless broadband internet access. Although fig. 8 shows the transmission module 870, it is understood that it does not belong to the essential constitution of the mobile terminal 800 and may be omitted entirely within the scope not changing the essence of the invention as needed.
The processor 880 is a control center of the mobile terminal 800, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the mobile terminal 800 and processes data by operating or executing software programs and/or modules stored in the memory 820 and calling data stored in the memory 820, thereby integrally monitoring the mobile phone. Optionally, processor 880 may include one or more processing cores; in some embodiments, processor 880 may integrate an application processor, which handles primarily the operating system, user interfaces, applications, etc., and a modem processor, which handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 880.
The mobile terminal 800 also includes a power supply 890 (e.g., a battery) for powering various components, such as the power supply, which may be logically coupled to the processor 880 via a power management system that may be used to manage charging, discharging, and power consumption, in some embodiments. Power supply 890 may also include any component of one or more dc or ac power sources, recharging systems, power failure detection circuitry, power converters or inverters, power status indicators, and the like.
Although not shown, the mobile terminal 800 may further include a camera (e.g., a front camera, a rear camera), a bluetooth module, etc., which are not described in detail herein. Specifically, in this embodiment, the display unit of the mobile terminal is a touch screen display, the mobile terminal further includes a memory, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include instructions for:
judging whether the mobile terminal is receiving GPS signals;
when the mobile terminal is judged not to receive the GPS signal, acquiring an upper limit value of normal transmitting power arranged in a first register of the mobile terminal, and carrying out communication according to the upper limit value of the normal transmitting power; and
when the mobile terminal is judged to be receiving the GPS signal, according to a first value of an identification bit of a power upper limit parameter state of the mobile terminal, obtaining a first correction value of normal transmitting power stored in a first register of the mobile terminal, and communicating according to the first correction value of the normal transmitting power, wherein the first correction value is obtained after the upper limit value of the normal transmitting power of the mobile terminal is adjusted, and the first correction value is smaller than or equal to the upper limit value.
In specific implementation, the above modules may be implemented as independent entities, or may be combined arbitrarily to be implemented as the same or several entities, and specific implementation of the above modules may refer to the foregoing method embodiments, which are not described herein again.
It will be understood by those skilled in the art that all or part of the steps in the methods of the embodiments described above may be implemented by instructions or by instructions controlling associated hardware, and the instructions may be stored in a storage medium and can be loaded by a processor to perform the steps in any of the methods for reducing the interference to the GPS signal of the mobile terminal provided by the embodiments of the present application.
Wherein the storage medium may include: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.
Because the instructions stored in the storage medium can execute the steps in any method for reducing the interference to the GPS signal of the mobile terminal provided in the embodiment of the present application, the beneficial effects that can be achieved by any method for reducing the interference to the GPS signal of the mobile terminal provided in the embodiment of the present application can be achieved, for details, see the foregoing embodiments, and are not described herein again. The above operations can be implemented in the foregoing embodiments, and are not described in detail herein.
According to the method, the device and the mobile terminal for reducing the interference to the GPS signal of the mobile terminal, the problem that the upper limit value of the normal transmitting power of the mobile terminal possibly interferes with the GPS signal of the mobile terminal when the mobile terminal works in different frequency bands can be effectively solved, when the mobile terminal uses a GPS function, the upper limit value of the transmitting power with a large part can be automatically reduced and adjusted to be a proper transmitting power correction value so as to reduce the interference to the GPS signal, and therefore the positioning performance of the mobile terminal is improved.
The method for reducing the interference to the GPS signal of the mobile terminal, the apparatus thereof, and the mobile terminal provided in the embodiments of the present application are introduced in detail above, and a specific example is applied in the present application to explain the principle and the implementation of the present application, and the description of the above embodiments is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A method for reducing interference to a mobile terminal GPS signal, the method comprising:
judging whether the mobile terminal is receiving GPS signals;
when the mobile terminal is judged not to receive the GPS signal, acquiring an upper limit value of normal transmitting power arranged in a first register of the mobile terminal, and carrying out communication according to the upper limit value of the normal transmitting power; and
when the mobile terminal is judged to be receiving the GPS signal, according to a first value of an identification bit of a power upper limit parameter state of the mobile terminal, obtaining a first correction value of normal transmitting power stored in a first register of the mobile terminal, and communicating according to the first correction value of the normal transmitting power, wherein the first correction value is obtained after the upper limit value of the normal transmitting power of the mobile terminal is adjusted, and the first correction value is smaller than or equal to the upper limit value.
2. The method for reducing interference to a mobile terminal GPS signal of claim 1, wherein prior to the step of determining whether the mobile terminal is receiving GPS signals, further comprising:
acquiring upper limit values of normal transmitting power of the mobile terminal when the mobile terminal respectively works in different frequency bands through a second register of the mobile terminal;
defining a second value of an identification bit of a power upper limit parameter state of the mobile terminal; and
storing the upper limit value of the normal transmitting power of the mobile terminal when the mobile terminal respectively works in different frequency bands to a first register of the mobile terminal, and associating the upper limit value with a second value of an identification bit of the power upper limit parameter state of the mobile terminal.
3. The method for reducing interference to a mobile terminal GPS signal of claim 1, wherein prior to the step of determining whether the mobile terminal is receiving GPS signals, further comprising:
judging whether the interference degree of the GPS signal sensitivity of the mobile terminal respectively working in different frequency bands is greater than a threshold value;
when the interference degree of the GPS signal sensitivity is judged to be greater than the threshold value, adjusting the upper limit value to a corresponding first correction value, and associating the first correction value with a first value of an identification bit of the power upper limit parameter state of the mobile terminal; and
and when the interference degree of the GPS signal sensitivity is judged to be less than or equal to the threshold value, maintaining the upper limit value unchanged, assigning the upper limit value as a first correction value, and associating the first correction value with the first value of the identification bit of the power upper limit parameter state of the mobile terminal.
4. The method of claim 1, wherein the step of communicating based on the first correction value of the normal transmission power when the mobile terminal is determined to be receiving GPS signals further comprises:
judging whether the mobile terminal communicates through an upper antenna;
and when the mobile terminal is judged to be communicated through the upper antenna, the antenna of the mobile terminal is switched to the lower antenna so as to increase the distance between the antenna of the mobile terminal and the GPS antenna of the mobile terminal.
5. The method for reducing interference to a GPS signal of a mobile terminal of claim 1, wherein after determining that the mobile terminal is not receiving the GPS signal, further comprising:
acquiring a second correction value of the normal transmitting power which is associated with a third value of the identification bit of the power upper limit parameter state of the mobile terminal and corresponds to the electromagnetic wave absorption ratio; and
and communicating according to the second correction value of the normal transmitting power.
6. An apparatus for reducing interference to a mobile terminal GPS signal, the apparatus comprising:
the GPS signal judging module is used for judging whether the mobile terminal receives the GPS signal;
the first transmission power upper limit value acquisition module is used for acquiring an upper limit value of normal transmission power in a first register of the mobile terminal when the mobile terminal is judged not to receive the GPS signal;
the first communication module is connected with the first transmitting power upper limit value acquisition module and used for carrying out communication according to the upper limit value of the normal transmitting power;
the transmission power first correction value acquisition module is used for acquiring a first correction value of normal transmission power stored in a first register of the mobile terminal according to a first value of an identification bit of a power upper limit parameter state of the mobile terminal when the mobile terminal is judged to receive a GPS signal, wherein the first correction value is obtained after the upper limit value of the normal transmission power of the mobile terminal is adjusted, and the first correction value is smaller than or equal to the upper limit value; and
and the second communication module is connected with the first correction value acquisition module of the transmitting power and is used for carrying out communication according to the first correction value of the normal transmitting power.
7. The apparatus for reducing interference to a mobile terminal GPS signal as set forth in claim 6, wherein said apparatus further comprises:
a second transmission power upper limit value obtaining module, configured to obtain, through a second register of the mobile terminal, upper limit values of normal transmission power when the mobile terminal operates in different frequency bands respectively;
a power upper limit parameter identification bit definition module, configured to define a second value of the identification bit of the power upper limit parameter state of the mobile terminal;
the transmission power upper limit value storage module is used for storing the upper limit value of the normal transmission power of the mobile terminal when the mobile terminal respectively works in different frequency bands to a first register of the mobile terminal;
and the first power upper limit parameter identification bit association module is used for associating the upper limit value with a second value of the identification bit of the power upper limit parameter state of the mobile terminal.
8. The apparatus for reducing interference to a mobile terminal GPS signal as set forth in claim 6, wherein said apparatus further comprises:
the threshold judging module is used for judging whether the interference degree of the GPS signal sensitivity of the mobile terminal when the mobile terminal works in different frequency bands is larger than a threshold value or not;
the upper limit value adjusting module is used for adjusting the upper limit value to a corresponding first correction value when the interference degree of the GPS signal sensitivity is judged to be greater than the threshold value;
a second power upper limit parameter flag associating module, configured to associate the first correction value with a first value of a flag of a power upper limit parameter state of the mobile terminal; and
and the upper limit value assignment module is used for keeping the upper limit value unchanged and assigning the upper limit value as a first correction value when the interference degree of the GPS signal sensitivity is judged to be less than or equal to the threshold value.
9. The apparatus for reducing interference to a mobile terminal GPS signal as set forth in claim 6, wherein said apparatus further comprises:
the transmission power second correction value acquisition module is used for acquiring a second correction value of the normal transmission power which is associated with a third value of the identification bit of the power upper limit parameter state of the mobile terminal and corresponds to the electromagnetic wave absorption ratio; and
and the third communication module is connected with the transmission power second correction value acquisition module and is used for carrying out communication according to the second correction value of the normal transmission power.
10. A mobile terminal, characterized in that it comprises means for reducing interference to a GPS signal of the mobile terminal according to any one of claims 6 to 9.
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