CN114157310B - Harmonic filtering method, device, terminal and storage medium - Google Patents
Harmonic filtering method, device, terminal and storage medium Download PDFInfo
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- CN114157310B CN114157310B CN202010936034.7A CN202010936034A CN114157310B CN 114157310 B CN114157310 B CN 114157310B CN 202010936034 A CN202010936034 A CN 202010936034A CN 114157310 B CN114157310 B CN 114157310B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0067—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands
- H04B1/0075—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands using different intermediate frequencied for the different bands
- H04B1/0078—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands using different intermediate frequencied for the different bands with a common intermediate frequency amplifier for the different intermediate frequencies, e.g. when using switched intermediate frequency filters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
Abstract
The embodiment of the application discloses a method, a device, a terminal and a storage medium for harmonic filtering, and belongs to the technical field of signal processing. The terminal firstly determines a first frequency band, modulates a filter connected with a signal path of the frequency band to frequency characteristics according to the first frequency band, and the modulated filter can filter signals corresponding to the first frequency band and finally transmits the signals corresponding to the filtered first frequency band. The filter in the present application is a programmable filter, the frequency characteristics of which can be varied according to parameter adjustments therein. Therefore, when at least two candidate frequency bands are filtered by using the filters, the filter can be adjusted by using the actually used frequency bands, so that one filter can adapt to the filtering of a plurality of candidate frequency bands, the space for setting the filter in the terminal is saved, and the cost for configuring the terminal is reduced.
Description
Technical Field
The embodiment of the application relates to the technical field of signal processing, in particular to a method, a device, a terminal and a storage medium for harmonic filtering.
Background
Along with the rising of the communication capability of the mobile terminal, a plurality of communication components working in different frequency bands are installed in one mobile terminal, so that the mobile terminal becomes a common configuration scheme in the communication field.
In the prior art, cellular data in mobile terminals has several frequency bands available. The mobile terminal selects a specified frequency band to send or receive data according to the configuration of the current communication component. In one possible scenario, when a mobile terminal selects a harmonic of a specified frequency band to coincide with a bluetooth or wireless fidelity frequency band, it will have an impact on bluetooth or wireless fidelity data.
Disclosure of Invention
The embodiment of the application provides a method, a device, a terminal and a storage medium for harmonic filtering. The technical scheme is as follows:
according to an aspect of the present application, there is provided a method for harmonic filtering, applied to a terminal, the method including:
determining a first frequency band from at least two candidate frequency bands, wherein the first frequency band is used for transmitting data to be transmitted in a first communication component in the terminal;
modulating a filter connected with a signal path of the first frequency band to frequency characteristics according to the first frequency band;
Filtering signals corresponding to the first frequency band through the filter under the frequency characteristic, wherein the power of the harmonic wave of the first frequency band after filtering is smaller than a power threshold value;
and transmitting the filtered signals corresponding to the first frequency band.
According to another aspect of the present application, there is provided a device for harmonic filtering, applied to a terminal, the device including:
the frequency band determining module is used for determining a first frequency band from at least two candidate frequency bands, wherein the first frequency band is used for transmitting data to be transmitted in a first communication component in the terminal;
the filter modulation module is used for modulating a filter connected with a signal path of the first frequency band to frequency characteristics according to the first frequency band;
the harmonic filtering module is used for filtering the signals corresponding to the first frequency band through the filter under the frequency characteristic, and the power of the harmonic of the first frequency band after filtering is smaller than a power threshold;
and the signal transmitting module is used for transmitting the filtered signals corresponding to the first frequency band.
According to another aspect of the present application, there is provided a terminal comprising a processor and a memory having stored therein at least one instruction loaded and executed by the processor to implement a method of harmonic filtering as provided in various aspects of the present application.
According to another aspect of the present application, there is provided a computer readable storage medium having stored therein at least one instruction that is loaded and executed by a processor to implement a method of harmonic filtering as provided by the various aspects of the present application.
According to one aspect of the present application, a computer program product is provided that includes computer instructions stored in a computer-readable storage medium. The computer instructions are read from a computer-readable storage medium by a processor of a computer device, and executed by the processor, cause the computer device to perform the method provided in various alternative implementations of the above-described aspects of harmonic filtering or aspects of harmonic filtering.
In the application, the terminal firstly determines the first frequency band, modulates a filter connected with a signal path of the frequency band to frequency characteristics according to the first frequency band, and the modulated filter can filter signals corresponding to the first frequency band and finally transmits the signals corresponding to the filtered first frequency band. The filter in the present application is a programmable filter, the frequency characteristics of which can be varied according to parameter adjustments therein. Therefore, when at least two candidate frequency bands are filtered by using the filters, the filter can be adjusted by using the actually used frequency bands, so that one filter can adapt to the filtering of a plurality of candidate frequency bands, the space for setting the filter in the terminal is saved, and the cost for configuring the terminal is reduced.
Drawings
In order to more clearly describe the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a frequency characteristic diagram of a filter provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a terminal according to an embodiment of the present application;
FIG. 3 is a diagram of another terminal architecture provided in accordance with the embodiment of FIG. 2;
FIG. 4 is a diagram of another terminal architecture provided in accordance with the embodiment of FIG. 3;
fig. 5 is a block diagram of another terminal according to an exemplary embodiment of the present application;
FIG. 6 is a flowchart of a method of harmonic filtering provided in an exemplary embodiment of the present application;
FIG. 7 is a flowchart of a method for harmonic filtering provided in another exemplary embodiment of the present application;
FIG. 8 is a flowchart of a method for harmonic filtering provided in another exemplary embodiment of the present application;
fig. 9 is a block diagram of an apparatus for harmonic filtering according to an exemplary embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.
In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context. Furthermore, in the description of the present application, unless otherwise indicated, "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
For ease of understanding of the schemes shown in the embodiments of the present application, several terms appearing in the embodiments of the present application are described below.
Candidate frequency bands: for providing a frequency band of a receive and/or transmit signal path for a first communication component in the terminal. In one possible approach, when the first communication component is a cellular communication component, the candidate frequency bands may be B1, B2, B3, B4, B5, B7, B8, B10, B11, B12, B13, B14, B18, B25, B26, B27, and so on.
Alternatively, the candidate frequency band may be implemented as another frequency band when the first communication component is another communication component capable of using multiple frequency bands.
A first communication component: a signal can be received or transmitted over one of a plurality of candidate frequency bands, the signal including received data or data to be transmitted.
Frequency characteristics: for indicating the status of a particular frequency response. In one particular frequency characteristic, the filter has a specified harmonic band. When the Filter is an LPF (Low Pass Filter), the LPF can effectively Filter out signals in the harmonic band of the Filter.
Referring to fig. 1, fig. 1 is a frequency characteristic diagram of a filter according to an embodiment of the present application. In fig. 1, the harmonic band of the LPF is 5GHz to 6GHz. It can be seen that the energy of the signal passing through the filter in this harmonic band drops significantly, and the S parameter drops below-30 dB. In fig. 1, the vertical axis represents S parameter in decibels (sign: dB); the horizontal axis represents the frequency of the signal in gigahertz (symbol: GHz).
Illustratively, the LPF has low loss in the operating band and high loss outside the operating band. The LPF may attenuate the harmonic energy generated by the first communication component emissions, thereby reducing interference of the first communication component emissions with the second communication component or other. In fig. 1, the signal may be a frequency characteristic diagram of an LPF used for an intermediate frequency signal (e.g., B1, B2, B3, B4, or B25). In fig. 1, the signal has small loss in the passband and large loss in the harmonic band, and the loss is about one thousandth of the original signal strength.
The method for filtering the harmonic wave can be applied to a terminal, and the terminal has the functions of transmitting signals and receiving signals, and the harmonic wave filtering function is achieved on the basis. The terminals may include cell phones, tablet computers, laptops, desktop computers, computer-integrated machines, servers, workstations, televisions, set-top boxes, smart glasses, smart watches, digital cameras, MP4 play terminals, MP5 play terminals, learning machines, point-to-read machines, electronic books, electronic dictionaries, vehicle-mounted terminals, virtual Reality (VR) play terminals, or augmented Reality (Augmented Reality, AR) play terminals, etc.
Referring to fig. 2, fig. 2 is a schematic diagram of a terminal according to an embodiment of the present application. In fig. 2, a first communication component 210, a first antenna 220, a filter 230, and an antenna switch 240 are included.
In fig. 2, 9 signal paths are provided between the first communication component 210 and the antenna switch 240, and each signal path corresponds to one candidate frequency band. The 9 signal paths are paths formed by the electric signal cables. The antenna switch 240 is used to conduct a connection between one of the signal paths of at least two candidate frequency bands and the filter. Optionally, the end of the antenna switch 240 connected to the signal path of the candidate frequency band is a first end, and the end of the antenna switch 240 connected to the filter 230 is a second end. In one industry designation, the second end is also referred to as the common path end.
A second terminal of the antenna switch 240 is connected to an input terminal of the filter 230. It should be noted that the antenna switch 240 is a path selection switch. The antenna switch 240 can turn on the signal path of any one of the candidate bands in the first end with the filter 230, so that a plurality of candidate bands can share one filter 230.
The filter 230 is capable of acquiring a signal in the signal path when the antenna switch 240 is turned on, filtering the signal in the signal path, and transmitting the filtered signal through the first antenna 220.
In this application, the first communication component 210 sends a preset data signal to the programmable filter 230 according to the first frequency band in which the first communication component 210 is currently operating. Then, the filter 230 modulates itself to the frequency characteristic of the harmonic wave of the first frequency band according to the preset data signal, so as to attenuate the harmonic wave generated by the first frequency band obviously, and avoid interference to the frequency band where the harmonic wave of the first frequency band is located. It should be noted that the frequency band where the harmonic of the first frequency band is located may be a frequency band used by wireless fidelity (WiFi, wireless Fidelity) or a frequency band used by BlueTooth (BlueTooth).
It should be noted that the terminal may further include a processor and a memory, and the first communication component 210, the filter 230, and the antenna switch 240 may be connected to the processor through buses, which is not limited in this case. In one possible implementation, the various components shown in fig. 2 may be integrated onto a baseband chip.
Wherein the first communication component 210 may transmit the data for the modulated filter 230 over a cable therebetween.
Optionally, referring to fig. 3, fig. 3 is a schematic diagram of another terminal provided based on the embodiment shown in fig. 2. In fig. 3, a second communication component 310 and a second antenna 320 are included in addition to the various components shown in fig. 2.
In fig. 3, the second communication component 310 is configured to process signals using the second frequency band. In one approach, the second communication component 310 receives signals received over the second frequency band. In another manner of processing, the second communication component 310 transmits signals over a second frequency band.
It should be noted that, in an application scenario, the second communication component 310 is a wireless fidelity transceiver component or a bluetooth transceiver component, or a wireless fidelity and bluetooth transceiver component. The second frequency band may be a 2.4GHz frequency band, or may be a 5GHz frequency band.
Alternatively, the individual components shown in fig. 3 can also be integrated into the baseband chip.
Referring to fig. 4, fig. 4 is a schematic diagram of another terminal provided based on the embodiment shown in fig. 3. In fig. 4, a third communication component 410 and a third antenna 420 are included in addition to the respective components shown in fig. 3.
It should be noted that, in one application scenario, the third frequency band used by the third communication component 410 and the second frequency band used by the second communication component 310 are different frequency bands. The first communication component 210, the second communication component 310, and the third communication component 410 can each independently transmit and receive signals at the same time.
Similar to the scenario shown in fig. 2 and 3, the various components shown in fig. 4 may be integrated onto a baseband chip.
Referring to fig. 5, fig. 5 is a block diagram of another terminal according to an exemplary embodiment of the present application, where, as shown in fig. 5, the terminal includes a processor 520, a memory 540, a baseband chip 560, and a bus 580, where at least one instruction is stored in the memory 540, and the instruction is loaded and executed by the processor 520 to implement a method for harmonic filtering according to various method embodiments of the present application.
In the present application, the terminal 500 determines a first frequency band from at least two candidate frequency bands, where the first frequency band is used to transmit data to be transmitted in a first communication component in the terminal; modulating a filter connected with a signal path of the first frequency band to frequency characteristics according to the first frequency band; filtering signals corresponding to the first frequency band through the filter under the frequency characteristic, wherein the power of the harmonic wave of the first frequency band after filtering is smaller than a power threshold value; and transmitting the filtered signals corresponding to the first frequency band.
The Memory 540 may include a random access Memory (Random Access Memory, RAM) or a Read-Only Memory (ROM). Optionally, the memory 540 includes a non-transitory computer readable medium (non-transitory computer-readable storage medium). Memory 540 may be used to store instructions, programs, code, sets of codes, or instruction sets. The memory 540 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the various method embodiments described below, etc.; the storage data area may store data and the like referred to in the following respective method embodiments.
Referring to fig. 6, fig. 6 is a flowchart of a method for harmonic filtering according to an exemplary embodiment of the present application. This method of harmonic filtering can be applied in the terminal described above with respect to fig. 5. In fig. 5, the method of harmonic filtering includes:
In step 610, a first frequency band is determined from the at least two candidate frequency bands, the first frequency band being used for transmitting data to be transmitted in a first communication component in the terminal.
In the embodiment of the application, the first communication component in the terminal comprises a plurality of available candidate frequency bands. The terminal is capable of determining a first frequency band from the at least two candidate frequency bands prior to operation of the first communication component. After the first frequency band is determined, the data to be transmitted in the first communication assembly can pass through the first frequency band, and the data can be processed and transmitted on the signal path corresponding to the first frequency band.
In this example, the terminal can modulate the filter to the frequency characteristic according to the first frequency band. It should be noted that, after determining the first frequency band, the terminal may determine several harmonics to be filtered out in the first frequency band. In case of determination by other communication components in the terminal, the harmonics in the first frequency band that need to be filtered out are determined. For example, the harmonic to be filtered out in the first frequency band is an n-th harmonic, and the frequency characteristic to which the n-th harmonic needs to be adjusted by the filter is the first parameter set. The terminal adjusts the value of each capacitor in the filter and/or the value of each inductor according to the first parameter set, so that the filter effectively filters out the n-th harmonic.
In the embodiment of the application, the terminal will filter by the filter. In this process, the terminal does not need to perform a filter to operate. The filter will automatically filter the signal at the current frequency characteristic upon receipt of the signal input and output a responsive output signal.
Optionally, in order to minimize interference of the harmonics of the first frequency band to the frequency band in which it is located. The filtering performance of the filter in the application is adjusted to be able to limit the power of the harmonics of the first frequency band below the power threshold. The power threshold may be a value of-30 dB, -20dB, or-25 dB, etc., and embodiments of the present application are not limited to a specific power threshold.
And step 640, transmitting the signal corresponding to the filtered first frequency band.
In this example, the terminal may be capable of transmitting the signal corresponding to the filtered first frequency band. The signal corresponding to the first frequency has been filtered. Therefore, the harmonic wave in the first frequency band is attenuated, and the influence on the frequency band where the harmonic wave is located is greatly reduced.
In one possible scenario, the first frequency band may be introduced as 3 rd order harmonics. For example, the B5 transmitting frequency band of LTE is 824MHz-849MHz, and the third harmonic is 2472MHz-2547MHz. The B18 transmitting frequency band is 815MHz-830MHz, and the third harmonic is 2445MHz-2490MHz. The transmitting frequency band of B26 is 814MHz-849MHz, and the third harmonic is 2442MHz-2547MHz. B27 emission frequency band is 807MHz-824MHz, third harmonic is 2421MHz-2472MHz. The frequencies of 2.4G WIFI and bluetooth are 2400MHz-2483.5MHz, and it can be seen that the third harmonic generated when the LTE (Long-Term Evolution) signal is transmitted (i.e., the first communication component) will interfere with the 2.4G WIFI and bluetooth. The B1 transmitting frequency band of LTE is 1920MHz-1980MHz, and the third harmonic is 5760MHz-5940MHz. The B2 transmitting frequency band is 1850MHz-1910MHz, and the third harmonic is 5550MHz-5730MHz. The B3 transmitting frequency band is 1710MHz-1785MHz, and the third harmonic is 5130MHz-5355MHz. The B4 transmitting frequency band is 1710MHz-1755MHz, and the third harmonic is 5130MHz-5265MHz. The B25 transmitting frequency band is 1850MHz-1915MHz, and the third harmonic is 5550MHz-5745MHz. And the frequency of 5G WIFI is 5035MHz-5825MHz, it can be seen that the third harmonic generated during LTE transmission can interfere with 5G WIFI. Therefore, the embodiment of the application can filter out the 3 rd harmonic with interference, and can filter out other subharmonics after adjusting parameters.
In summary, the terminal provided in this embodiment determines the first frequency band, modulates the filter connected to the signal path of the first frequency band to the frequency characteristic according to the first frequency band, and the modulated filter can filter the signal corresponding to the first frequency band, and finally transmits the signal corresponding to the filtered first frequency band. The filter in the present application is a programmable filter, the frequency characteristics of which can be varied according to parameter adjustments therein. Therefore, when at least two candidate frequency bands are filtered by using the filters, the filter can be adjusted by using the actually used frequency bands, so that one filter can adapt to the filtering of a plurality of candidate frequency bands, the space for setting the filter in the terminal is saved, and the cost for configuring the terminal is reduced.
Based on the scheme disclosed in the previous embodiment, the terminal can also adjust the wave filter based on the working conditions of other communication components, so as to achieve the effect of least influencing the terminal. Please refer to the following examples.
Referring to fig. 7, fig. 7 is a flowchart of a method for harmonic filtering according to another exemplary embodiment of the present application. This method of harmonic filtering can be applied in the terminal shown above. In fig. 7, the method of harmonic filtering includes:
A first frequency band is determined from the at least two candidate frequency bands, step 710.
In this example, the execution of step 710 is the same as the execution of step 610, and will not be described here again.
Step 720, detecting an operating state of a second communication component in the terminal.
At step 730, when the second communication component receives or transmits a signal, a filter coupled to a signal path of the first frequency band is modulated to a first frequency characteristic according to the first frequency band.
In this example, the terminal is able to detect the operating state of the second communication component. In a possible detection result, when the second communication component is in a non-working state, the terminal does not need to consider the influence of the harmonic wave of the first communication component on the second communication component, so that the terminal does not need to continue to execute the subsequent flow of the scheme.
In another possible way, the terminal will modulate a filter connected to the signal path of the first frequency band to the first frequency characteristic according to the first frequency band when the second communication component receives the signal or when the second communication component transmits the signal. It should be noted that the first frequency characteristic is capable of filtering out harmonics affecting the first frequency band of the second communication component.
In another possible implementation manner of the present application, the step 730 can be performed instead of the step (1) and the step (2), so as to achieve the effect of adjusting the frequency characteristic of the filter.
And (1) acquiring a second frequency band used by the second communication component when the second communication component receives or transmits signals.
And (2) modulating a filter connected with a signal path of the first frequency band to a first frequency characteristic according to the first frequency band when the second frequency band is a frequency band in a preset frequency band list.
It should be noted that, in order to accurately determine the first frequency characteristic to which the filter needs to be adjusted, the terminal needs to acquire whether the second frequency band to be protected is a frequency band that may be affected by the first frequency band. The terminal may add a frequency band that can be affected by a harmonic of the first frequency band to a preset frequency band list, and when the second frequency band belongs to the preset frequency band list, it is indicated that the second frequency band is likely to be interfered by a certain harmonic in the first frequency band, and the terminal is required to adjust a filter to the first frequency characteristic so as to filter the certain harmonic in the first frequency band.
In the embodiment of the present application, when the terminal performs step (2), the terminal may also perform step (2 a) and step (2 b) instead of step (2) to achieve the effect of adjusting the filter.
And (2 a) when the second frequency band is a frequency band in a preset frequency band list, determining an n-order harmonic of the first frequency band according to the second frequency band and the first frequency band, wherein the frequency band where the n-order harmonic is located has an overlapping part with the second frequency band, and n is an integer greater than or equal to 2.
And (2 b) modulating a filter connected to the signal path of the first frequency band to a first frequency characteristic according to the n-th harmonic.
In this example, the terminal can determine the n-th harmonic of the first frequency band affecting the second frequency band, so that the filtering frequency band of the adjusting filter is clear, which is helpful for the terminal to accurately adjust the filter to the first frequency characteristic, thereby filtering the n-th harmonic which causes interference to the second frequency band.
And 740, filtering the signal corresponding to the first frequency band through a filter under the frequency characteristic.
In this example, the execution of step 740 is the same as that of step 630, and will not be described here again.
And step 750, transmitting the signal corresponding to the filtered first frequency band.
In this example, the execution of step 750 is the same as the execution of step 640, and will not be described here again.
In summary, the present embodiment determines whether to adjust the filter to the first frequency characteristic according to the working state of the second communication component, so that the harmonic wave in the signal transmitted by the first communication component does not affect the signal receiving and transmitting of the second communication component. When the second communication component is not in an operating state, the harmonic wave in the signal transmitted by the first communication component does not need to be adjusted. When the second communication component is in a working state, the harmonic wave in the signal transmitted by the first communication component is filtered, so that the interference of the second communication component receiving and transmitting signal by the first communication component in the same terminal is effectively avoided.
The method for filtering the harmonic wave provided by the embodiment can also determine whether the second frequency band used by the second communication component is interfered by the harmonic wave of the first frequency band used by the first communication component when the second communication component is in a working state, and when the second frequency band is a frequency band in a preset frequency band list, the harmonic wave interference of the first frequency band used by the first communication component is indicated to the second frequency band, and the terminal filters the harmonic wave in the signal transmitted by the first communication component, so that the filtering operation is performed at an accurate moment, and the invalid operation of the terminal is avoided.
According to the harmonic filtering method provided by the embodiment, when the second frequency band used by the second communication component is interfered by the harmonic of the first frequency band used by the first communication component, the fact that the harmonic of the specific first frequency band is the n-th harmonic can be determined, so that the filter accurately determines the first frequency characteristic to be adjusted, the n-th harmonic can be filtered effectively, the isolation of the terminal communication component is improved, and interference is avoided.
Based on the method shown in the foregoing embodiment, the embodiment of the present application further provides a method for harmonic filtering, which can selectively filter a signal transmitted by a first communication component under the condition that a terminal simultaneously has a second communication component and a third communication component, so as to achieve a better overall working capacity of the terminal.
Referring to fig. 8, fig. 8 is a flowchart of a method for harmonic filtering according to another exemplary embodiment of the present application. This method of harmonic filtering can be applied in the terminal shown above. In fig. 8, the method of harmonic filtering includes:
a first frequency band is determined from the at least two candidate frequency bands, step 811.
In step 814, when the second frequency band is a frequency band in the preset frequency band list, determining an n-th harmonic of the first frequency band according to the second frequency band and the first frequency band.
Wherein the frequency band where the n-th harmonic is located has a superposition part with the second frequency band, and n is an integer greater than or equal to 2.
In step 816, when the third communication component receives or transmits a signal, a third frequency band used by the third communication component is acquired.
In step 817, when the third frequency band is a frequency band in the preset frequency band list, the m-th harmonic of the first frequency band is determined according to the third frequency band and the first frequency band.
Wherein, the frequency band of m harmonic wave has the coincidence part with the third frequency band, m is the integer more than or equal to 2.
The first data volume is used for indicating the data volume received and/or transmitted by the second communication component, the target time period is the past time period from the current system time, and the duration of the target time period is the target duration.
At step 819, a second amount of data processed by the third communication component during the target period is obtained.
Wherein the second data volume is used for indicating the data volume received and/or transmitted by the third communication component, and the types of the first data volume and the second data volume are the same.
Wherein the target communication component is a communication component corresponding to a target data volume, the target data volume being the greater of the first data volume and the second data volume.
In step 821, the filter connected to the signal path of the first frequency band is modulated to the frequency characteristic according to the harmonic of the first frequency band corresponding to the target communication component.
In the present embodiment, step 821 can be implemented by step (c), step (d) and step (e).
And (c) determining a filtering period t1 corresponding to the second communication component and a filtering period t2 corresponding to the third communication component in the target period t according to the ratio of the first data amount to the second data amount.
And (d) modulating the filter to the first frequency characteristic according to the n-th harmonic of the first frequency band in the filtering period t 1.
And (e) modulating the filter to a second frequency characteristic according to the m-th harmonic of the first frequency band in the filtering period t 2.
In summary, the method for harmonic filtering provided in this embodiment may be capable of protecting the frequency band with a larger influence when different subharmonics in the first frequency band in the first communication component simultaneously interfere with the second frequency band used by the second communication component and the third frequency band used by the third communication component, so as to protect the important service of the terminal as a whole and ensure the working capability of the terminal to the maximum extent. In a possible scenario, the terminal can determine a communication component with larger transmission data volume in a past designated period, protect a frequency band corresponding to the communication component with larger transmission data volume, and adjust a filter to filter out a harmonic wave of a first frequency band interfering with the frequency band so as to ensure that the communication component with larger transmission data volume of the terminal is not interfered.
In another possible mode, the method can also be used for periodically filtering, so that the second communication component and the third communication component can obtain corresponding interference-free time period windows according to the data volume transmission size, and the communication capability of the terminal is comprehensively guaranteed under the condition that the filter is wired.
The following are device embodiments of the present application, which may be used to perform method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.
Referring to fig. 9, fig. 9 is a block diagram of an apparatus for harmonic filtering according to an exemplary embodiment of the present application. The means for harmonic filtering may be implemented as all or part of the terminal by software, hardware or a combination of both. The device comprises:
a frequency band determining module 910, configured to determine a first frequency band from at least two candidate frequency bands, where the first frequency band is used to transmit data to be transmitted in a first communication component in the terminal;
a filter modulation module 920, configured to modulate a filter connected to a signal path of the first frequency band to a frequency characteristic according to the first frequency band;
a harmonic filtering module 930, configured to filter, by using the filter under the frequency characteristic, a signal corresponding to the first frequency band, where the power of the harmonic of the filtered first frequency band is less than a power threshold;
and a signal transmitting module 940, configured to transmit the filtered signal corresponding to the first frequency band.
In an alternative embodiment, the filter modulation module 920 is configured to detect an operating state of the second communication component in the terminal; when the second communication component receives or transmits signals, a filter connected with a signal path of the first frequency band is modulated to a first frequency characteristic according to the first frequency band.
In an alternative embodiment, the filter modulation module 920 is configured to obtain the second frequency band used by the second communication component when the second communication component receives or sends a signal; and when the second frequency band is a frequency band in a preset frequency band list, modulating a filter connected with a signal path of the first frequency band to the first frequency characteristic according to the first frequency band.
In an optional embodiment, the filter modulation module 920 is configured to determine, when the second frequency band is a frequency band in the preset frequency band list, an n-th harmonic of the first frequency band according to the second frequency band and the first frequency band, where the frequency band where the n-th harmonic is located has a superposition portion with the second frequency band, and n is an integer greater than or equal to 2; and modulating a filter connected with a signal path of the first frequency band to the first frequency characteristic according to the n-th harmonic.
In an alternative embodiment, the filter modulation module 920 is configured to detect an operating state of the second communication component in the terminal; when the second communication component receives or transmits signals, a second frequency band used by the second communication component is acquired; when the second frequency band is a frequency band in a preset frequency band list, determining an n-order harmonic of the first frequency band according to the second frequency band and the first frequency band, wherein the frequency band where the n-order harmonic is located has an overlapping part with the second frequency band, and n is an integer greater than or equal to 2; detecting the working state of a third communication component in the terminal; when a third communication component receives or transmits a signal, acquiring a third frequency band used by the third communication component; when the third frequency band is a frequency band in the preset frequency band list, determining m-order harmonic waves of the first frequency band according to the third frequency band and the first frequency band, wherein the frequency band where the m-order harmonic waves are located has an overlapping part with the third frequency band, and m is an integer greater than or equal to 2; acquiring a first data volume processed by the second communication component in a target time period, wherein the first data volume is used for indicating the data volume received and/or transmitted by the second communication component, the target time period is a past time period from the current system time, and the duration of the target time period is a target duration; acquiring a second data volume processed by the third communication component in the target period, wherein the second data volume is used for indicating the data volume received and/or transmitted by the third communication component, and the types of the first data volume and the second data volume are the same; determining a target communication component according to the first data volume and the second data volume, wherein the target communication component is a communication component corresponding to a target data volume, and the target data volume is the larger one of the first data volume and the second data volume; and modulating a filter connected with a signal path of the first frequency band to the frequency characteristic according to the harmonic wave of the first frequency band corresponding to the target communication component.
In an optional embodiment, the filter modulation module 920 is configured to determine, according to a ratio of the first data amount to the second data amount, a filtering period t1 corresponding to the second communication component and a filtering period t2 corresponding to the third communication component in the target period t; modulating the filter to the first frequency characteristic according to an n-th harmonic of the first frequency band in the filtering period t 1; in the filtering period t2, the filter is modulated to a second frequency characteristic according to the m-th harmonic of the first frequency band.
In summary, the present embodiment determines whether to adjust the filter to the first frequency characteristic according to the working state of the second communication component, so that the harmonic wave in the signal transmitted by the first communication component does not affect the signal receiving and transmitting of the second communication component. When the second communication component is not in an operating state, the harmonic wave in the signal transmitted by the first communication component does not need to be adjusted. When the second communication component is in a working state, the harmonic wave in the signal transmitted by the first communication component is filtered, so that the interference of the second communication component receiving and transmitting signal by the first communication component in the same terminal is effectively avoided.
The method for filtering the harmonic wave provided by the embodiment can also determine whether the second frequency band used by the second communication component is interfered by the harmonic wave of the first frequency band used by the first communication component when the second communication component is in a working state, and when the second frequency band is a frequency band in a preset frequency band list, the harmonic wave interference of the first frequency band used by the first communication component is indicated to the second frequency band, and the terminal filters the harmonic wave in the signal transmitted by the first communication component, so that the filtering operation is performed at an accurate moment, and the invalid operation of the terminal is avoided.
According to the harmonic filtering method provided by the embodiment, when the second frequency band used by the second communication component is interfered by the harmonic of the first frequency band used by the first communication component, the fact that the harmonic of the specific first frequency band is the n-th harmonic can be determined, so that the filter accurately determines the first frequency characteristic to be adjusted, the n-th harmonic can be filtered effectively, the isolation of the terminal communication component is improved, and interference is avoided.
Embodiments of the present application also provide a computer readable medium storing at least one instruction that is loaded and executed by the processor to implement the method of harmonic filtering as described in the above embodiments.
It should be noted that: in the harmonic filtering device provided in the above embodiment, when the harmonic filtering method is executed, only the division of the above functional modules is used for illustration, in practical application, the above functional allocation may be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the functions described above. In addition, the harmonic filtering device provided in the above embodiment and the method embodiment of harmonic filtering belong to the same concept, and the specific implementation process is detailed in the method embodiment, which is not repeated here.
The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is merely illustrative of the possible embodiments of the present application and is not intended to limit the present application, but any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the present application are intended to be included within the scope of the present application.
Claims (7)
1. A method for harmonic filtering, characterized in that it is applied in a terminal, the method comprising:
determining a first frequency band from at least two candidate frequency bands, wherein the first frequency band is used for transmitting data to be transmitted in a first communication component in the terminal;
acquiring a first data volume processed by a second communication component in a target time period, wherein the first data volume is used for indicating the data volume received and/or transmitted by the second communication component, the target time period is a past time period from the current system time, and the duration of the target time period is a target duration;
acquiring a second data volume processed by a third communication component in the target period, wherein the second data volume is used for indicating the data volume received and/or transmitted by the third communication component, and the types of the first data volume and the second data volume are the same;
determining a target communication component according to the first data volume and the second data volume, wherein the target communication component is a communication component corresponding to a target data volume, and the target data volume is the larger one of the first data volume and the second data volume;
modulating a filter connected with a signal path of the first frequency band to frequency characteristics according to the harmonic wave of the first frequency band corresponding to the target communication component;
Filtering signals corresponding to the first frequency band through the filter under the frequency characteristic, wherein the power of the harmonic wave of the first frequency band after filtering is smaller than a power threshold value;
and transmitting the filtered signals corresponding to the first frequency band.
2. The method according to claim 1, wherein the method further comprises:
detecting the working state of the second communication component in the terminal;
when the second communication component receives or transmits signals, a second frequency band used by the second communication component is acquired;
when the second frequency band is a frequency band in a preset frequency band list, determining an n-order harmonic of the first frequency band according to the second frequency band and the first frequency band, wherein the frequency band where the n-order harmonic is located has an overlapping part with the second frequency band, and n is an integer greater than or equal to 2;
detecting the working state of the third communication component in the terminal;
when the third communication component receives or transmits signals, a third frequency band used by the third communication component is acquired;
when the third frequency band is a frequency band in the preset frequency band list, determining m-order harmonic of the first frequency band according to the third frequency band and the first frequency band, wherein the frequency band where the m-order harmonic is located has an overlapping part with the third frequency band, and m is an integer greater than or equal to 2.
3. The method of claim 1, wherein modulating the filter coupled to the signal path of the first frequency band to the frequency characteristic according to the harmonics of the first frequency band corresponding to the target communication component comprises:
determining a filtering period t1 corresponding to the second communication component and a filtering period t2 corresponding to the third communication component in a target period t according to the ratio of the first data amount to the second data amount;
modulating the filter to a first frequency characteristic according to an n-th harmonic of the first frequency band in the filtering period t 1;
in the filtering period t2, the filter is modulated to a second frequency characteristic according to the m-th harmonic of the first frequency band.
4. A device for harmonic filtering, characterized in that it is applied in a terminal, said device comprising:
the frequency band determining module is used for determining a first frequency band from at least two candidate frequency bands, wherein the first frequency band is used for transmitting data to be transmitted in a first communication component in the terminal;
the filter modulation module is used for acquiring a first data volume processed by the second communication component in a target time period, wherein the first data volume is used for indicating the data volume received and/or transmitted by the second communication component, the target time period is a past time period from the current system time, and the duration of the target time period is a target duration; acquiring a second data volume processed by a third communication component in the target period, wherein the second data volume is used for indicating the data volume received and/or transmitted by the third communication component, and the types of the first data volume and the second data volume are the same; determining a target communication component according to the first data volume and the second data volume, wherein the target communication component is a communication component corresponding to a target data volume, and the target data volume is the larger one of the first data volume and the second data volume; modulating a filter connected with a signal path of the first frequency band to frequency characteristics according to the harmonic wave of the first frequency band corresponding to the target communication component;
The harmonic filtering module is used for filtering the signals corresponding to the first frequency band through the filter under the frequency characteristic, and the power of the harmonic of the first frequency band after filtering is smaller than a power threshold;
and the signal transmitting module is used for transmitting the filtered signals corresponding to the first frequency band.
5. A terminal comprising a first antenna, a filter, an antenna switch, a first communication component, a processor, and a memory coupled to the processor, the memory for storing program instructions that when executed by the processor implement the method of harmonic filtering of any of claims 1 to 3, in which terminal:
the first communication component is connected with the first end of the antenna switch through signal paths of at least two candidate frequency bands, and the antenna switch is used for conducting connection between one of the signal paths of the at least two candidate frequency bands and the filter;
the second end of the antenna switch is connected with the input end of the filter;
the output end of the filter is connected with the first antenna;
the processor is connected with the filter, the antenna switch and the first communication component through buses respectively.
6. The terminal of claim 5, further comprising a second communication component and a second antenna, the second communication component being coupled to the second antenna, the second antenna being configured to receive or transmit signals processed by the second communication component.
7. A computer readable storage medium having stored therein program instructions, which when executed by a processor, implement a method of harmonic filtering as claimed in any one of claims 1 to 3.
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